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de69fd9779b3fbe92cd8cd8b99bcca0a6b744988
lofunz/mieme
Reloaded/tags/MAME4droid.Reloaded.1.0.WIP/src/emu/cpu/v60/am1.c
[ "Unlicense" ]
C
am1Register
UINT32
static UINT32 am1Register(v60_state *cpustate) { switch (cpustate->moddim) { case 0: cpustate->amout = (UINT8)cpustate->reg[cpustate->modval & 0x1F]; break; case 1: cpustate->amout = (UINT16)cpustate->reg[cpustate->modval & 0x1F]; break; case 2: cpustate->amout = cpustate->reg[cpustate->modval & 0x1F]; break; } return 1; }
// AM1 Functions (for ReadAM) // **************************
AM1 Functions (for ReadAM)
[ "AM1", "Functions", "(", "for", "ReadAM", ")" ]
static UINT32 am1Register(v60_state *cpustate) { switch (cpustate->moddim) { case 0: cpustate->amout = (UINT8)cpustate->reg[cpustate->modval & 0x1F]; break; case 1: cpustate->amout = (UINT16)cpustate->reg[cpustate->modval & 0x1F]; break; case 2: cpustate->amout = cpustate->reg[cpustate->modval & 0x1F]; break; } return 1; }
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AM1 Functions (for ReadAM)
[ "AM1", "Functions", "(", "for", "ReadAM", ")" ]
[]
[ { "param": "cpustate", "type": "v60_state" } ]
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a4520d0b849fced1efe34e5a922e794d2ea30b67
lofunz/mieme
Reloaded/tags/MAME4droid1.1.2&MAME4iOS 1.1Reloaded/src/emu/cpu/mips/mips3fe.c
[ "Unlicense" ]
C
mips3fe_describe
int
int mips3fe_describe(void *param, opcode_desc *desc, const opcode_desc *prev) { mips3_state *mips = (mips3_state *)param; UINT32 op, opswitch; /* compute the physical PC */ if (!mips3com_translate_address(mips, ADDRESS_SPACE_PROGRAM, TRANSLATE_FETCH, &desc->physpc)) { /* uh-oh: a page fault; leave the description empty and just if this is the first instruction, leave it empty and */ /* mark as needing to validate; otherwise, just end the sequence here */ desc->flags |= OPFLAG_VALIDATE_TLB | OPFLAG_CAN_CAUSE_EXCEPTION | OPFLAG_COMPILER_PAGE_FAULT | OPFLAG_VIRTUAL_NOOP | OPFLAG_END_SEQUENCE; return TRUE; } /* fetch the opcode */ op = desc->opptr.l[0] = memory_decrypted_read_dword(mips->program, desc->physpc); /* all instructions are 4 bytes and default to a single cycle each */ desc->length = 4; desc->cycles = 1; /* parse the instruction */ opswitch = op >> 26; switch (opswitch) { case 0x00: /* SPECIAL */ return describe_instruction_special(mips, op, desc); case 0x01: /* REGIMM */ return describe_instruction_regimm(mips, op, desc); case 0x10: /* COP0 */ return describe_instruction_cop0(mips, op, desc); case 0x11: /* COP1 */ return describe_instruction_cop1(mips, op, desc); case 0x12: /* COP2 */ return describe_instruction_cop2(mips, op, desc); case 0x13: /* COP1X - MIPS IV */ if (mips->flavor < MIPS3_TYPE_MIPS_IV) return FALSE; return describe_instruction_cop1x(mips, op, desc); case 0x1c: /* IDT-specific opcodes: mad/madu/mul on R4640/4650, msub on RC32364 */ return describe_instruction_idt(mips, op, desc); case 0x02: /* J */ desc->flags |= OPFLAG_IS_UNCONDITIONAL_BRANCH | OPFLAG_END_SEQUENCE; desc->targetpc = (desc->pc & 0xf0000000) | (LIMMVAL << 2); desc->delayslots = 1; return TRUE; case 0x03: /* JAL */ desc->regout[0] |= REGFLAG_R(31); desc->flags |= OPFLAG_IS_UNCONDITIONAL_BRANCH | OPFLAG_END_SEQUENCE; desc->targetpc = (desc->pc & 0xf0000000) | (LIMMVAL << 2); desc->delayslots = 1; return TRUE; case 0x04: /* BEQ */ case 0x05: /* BNE */ case 0x14: /* BEQL */ case 0x15: /* BNEL */ if ((opswitch == 0x04 || opswitch == 0x14) && RSREG == RTREG) desc->flags |= OPFLAG_IS_UNCONDITIONAL_BRANCH | OPFLAG_END_SEQUENCE; else { desc->regin[0] |= REGFLAG_R(RSREG) | REGFLAG_R(RTREG); desc->flags |= OPFLAG_IS_CONDITIONAL_BRANCH; } desc->targetpc = desc->pc + 4 + (SIMMVAL << 2); desc->delayslots = 1; desc->skipslots = (opswitch & 0x10) ? 1 : 0; return TRUE; case 0x06: /* BLEZ */ case 0x07: /* BGTZ */ case 0x16: /* BLEZL */ case 0x17: /* BGTZL */ if ((opswitch == 0x06 || opswitch == 0x16) && RSREG == 0) desc->flags |= OPFLAG_IS_UNCONDITIONAL_BRANCH | OPFLAG_END_SEQUENCE; else { desc->regin[0] |= REGFLAG_R(RSREG); desc->flags |= OPFLAG_IS_CONDITIONAL_BRANCH; } desc->targetpc = desc->pc + 4 + (SIMMVAL << 2); desc->delayslots = 1; desc->skipslots = (opswitch & 0x10) ? 1 : 0; return TRUE; case 0x08: /* ADDI */ case 0x18: /* DADDI */ desc->regin[0] |= REGFLAG_R(RSREG); desc->regout[0] |= REGFLAG_R(RTREG); desc->flags |= OPFLAG_CAN_CAUSE_EXCEPTION; return TRUE; case 0x09: /* ADDIU */ case 0x0a: /* SLTI */ case 0x0b: /* SLTIU */ case 0x0c: /* ANDI */ case 0x0d: /* ORI */ case 0x0e: /* XORI */ case 0x19: /* DADDIU */ desc->regin[0] |= REGFLAG_R(RSREG); desc->regout[0] |= REGFLAG_R(RTREG); return TRUE; case 0x0f: /* LUI */ desc->regout[0] |= REGFLAG_R(RTREG); return TRUE; case 0x1a: /* LDL */ case 0x1b: /* LDR */ case 0x22: /* LWL */ case 0x26: /* LWR */ desc->regin[0] |= REGFLAG_R(RTREG); case 0x20: /* LB */ case 0x21: /* LH */ case 0x23: /* LW */ case 0x24: /* LBU */ case 0x25: /* LHU */ case 0x27: /* LWU */ case 0x30: /* LL */ case 0x34: /* LLD */ case 0x37: /* LD */ desc->regin[0] |= REGFLAG_R(RSREG); desc->regout[0] |= REGFLAG_R(RTREG); desc->flags |= OPFLAG_READS_MEMORY | OPFLAG_CAN_CAUSE_EXCEPTION; return TRUE; case 0x28: /* SB */ case 0x29: /* SH */ case 0x2a: /* SWL */ case 0x2b: /* SW */ case 0x2c: /* SDL */ case 0x2d: /* SDR */ case 0x2e: /* SWR */ case 0x3f: /* SD */ desc->regin[0] |= REGFLAG_R(RSREG) | REGFLAG_R(RTREG); desc->flags |= OPFLAG_WRITES_MEMORY | OPFLAG_CAN_CAUSE_EXCEPTION; return TRUE; case 0x38: /* SC */ case 0x3c: /* SCD */ desc->regin[0] |= REGFLAG_R(RSREG) | REGFLAG_R(RTREG); desc->regout[0] |= REGFLAG_R(RTREG); desc->flags |= OPFLAG_WRITES_MEMORY | OPFLAG_CAN_CAUSE_EXCEPTION; return TRUE; case 0x31: /* LWC1 */ case 0x35: /* LDC1 */ desc->regin[0] |= REGFLAG_R(RSREG); desc->regout[1] |= REGFLAG_CPR1(RTREG); desc->flags |= OPFLAG_READS_MEMORY | OPFLAG_CAN_CAUSE_EXCEPTION; return TRUE; case 0x39: /* SWC1 */ case 0x3d: /* SDC1 */ desc->regin[0] |= REGFLAG_R(RSREG); desc->regin[1] |= REGFLAG_CPR1(RTREG); desc->flags |= OPFLAG_WRITES_MEMORY | OPFLAG_CAN_CAUSE_EXCEPTION; return TRUE; case 0x32: /* LWC2 */ case 0x36: /* LDC2 */ desc->regin[0] |= REGFLAG_R(RSREG); desc->flags |= OPFLAG_READS_MEMORY | OPFLAG_CAN_CAUSE_EXCEPTION; return TRUE; case 0x3a: /* SWC2 */ case 0x3e: /* SDC2 */ desc->regin[0] |= REGFLAG_R(RSREG); desc->flags |= OPFLAG_WRITES_MEMORY | OPFLAG_CAN_CAUSE_EXCEPTION; return TRUE; case 0x33: /* PREF */ if (mips->flavor < MIPS3_TYPE_MIPS_IV) return FALSE; case 0x2f: /* CACHE */ /* effective no-op */ return TRUE; } return FALSE; }
/*------------------------------------------------- describe_instruction - build a description of a single instruction -------------------------------------------------*/
build a description of a single instruction
[ "build", "a", "description", "of", "a", "single", "instruction" ]
int mips3fe_describe(void *param, opcode_desc *desc, const opcode_desc *prev) { mips3_state *mips = (mips3_state *)param; UINT32 op, opswitch; if (!mips3com_translate_address(mips, ADDRESS_SPACE_PROGRAM, TRANSLATE_FETCH, &desc->physpc)) { desc->flags |= OPFLAG_VALIDATE_TLB | OPFLAG_CAN_CAUSE_EXCEPTION | OPFLAG_COMPILER_PAGE_FAULT | OPFLAG_VIRTUAL_NOOP | OPFLAG_END_SEQUENCE; return TRUE; } op = desc->opptr.l[0] = memory_decrypted_read_dword(mips->program, desc->physpc); desc->length = 4; desc->cycles = 1; opswitch = op >> 26; switch (opswitch) { case 0x00: return describe_instruction_special(mips, op, desc); case 0x01: return describe_instruction_regimm(mips, op, desc); case 0x10: return describe_instruction_cop0(mips, op, desc); case 0x11: return describe_instruction_cop1(mips, op, desc); case 0x12: return describe_instruction_cop2(mips, op, desc); case 0x13: if (mips->flavor < MIPS3_TYPE_MIPS_IV) return FALSE; return describe_instruction_cop1x(mips, op, desc); case 0x1c: return describe_instruction_idt(mips, op, desc); case 0x02: desc->flags |= OPFLAG_IS_UNCONDITIONAL_BRANCH | OPFLAG_END_SEQUENCE; desc->targetpc = (desc->pc & 0xf0000000) | (LIMMVAL << 2); desc->delayslots = 1; return TRUE; case 0x03: desc->regout[0] |= REGFLAG_R(31); desc->flags |= OPFLAG_IS_UNCONDITIONAL_BRANCH | OPFLAG_END_SEQUENCE; desc->targetpc = (desc->pc & 0xf0000000) | (LIMMVAL << 2); desc->delayslots = 1; return TRUE; case 0x04: case 0x05: case 0x14: case 0x15: if ((opswitch == 0x04 || opswitch == 0x14) && RSREG == RTREG) desc->flags |= OPFLAG_IS_UNCONDITIONAL_BRANCH | OPFLAG_END_SEQUENCE; else { desc->regin[0] |= REGFLAG_R(RSREG) | REGFLAG_R(RTREG); desc->flags |= OPFLAG_IS_CONDITIONAL_BRANCH; } desc->targetpc = desc->pc + 4 + (SIMMVAL << 2); desc->delayslots = 1; desc->skipslots = (opswitch & 0x10) ? 1 : 0; return TRUE; case 0x06: case 0x07: case 0x16: case 0x17: if ((opswitch == 0x06 || opswitch == 0x16) && RSREG == 0) desc->flags |= OPFLAG_IS_UNCONDITIONAL_BRANCH | OPFLAG_END_SEQUENCE; else { desc->regin[0] |= REGFLAG_R(RSREG); desc->flags |= OPFLAG_IS_CONDITIONAL_BRANCH; } desc->targetpc = desc->pc + 4 + (SIMMVAL << 2); desc->delayslots = 1; desc->skipslots = (opswitch & 0x10) ? 1 : 0; return TRUE; case 0x08: case 0x18: desc->regin[0] |= REGFLAG_R(RSREG); desc->regout[0] |= REGFLAG_R(RTREG); desc->flags |= OPFLAG_CAN_CAUSE_EXCEPTION; return TRUE; case 0x09: case 0x0a: case 0x0b: case 0x0c: case 0x0d: case 0x0e: case 0x19: desc->regin[0] |= REGFLAG_R(RSREG); desc->regout[0] |= REGFLAG_R(RTREG); return TRUE; case 0x0f: desc->regout[0] |= REGFLAG_R(RTREG); return TRUE; case 0x1a: case 0x1b: case 0x22: case 0x26: desc->regin[0] |= REGFLAG_R(RTREG); case 0x20: case 0x21: case 0x23: case 0x24: case 0x25: case 0x27: case 0x30: case 0x34: case 0x37: desc->regin[0] |= REGFLAG_R(RSREG); desc->regout[0] |= REGFLAG_R(RTREG); desc->flags |= OPFLAG_READS_MEMORY | OPFLAG_CAN_CAUSE_EXCEPTION; return TRUE; case 0x28: case 0x29: case 0x2a: case 0x2b: case 0x2c: case 0x2d: case 0x2e: case 0x3f: desc->regin[0] |= REGFLAG_R(RSREG) | REGFLAG_R(RTREG); desc->flags |= OPFLAG_WRITES_MEMORY | OPFLAG_CAN_CAUSE_EXCEPTION; return TRUE; case 0x38: case 0x3c: desc->regin[0] |= REGFLAG_R(RSREG) | REGFLAG_R(RTREG); desc->regout[0] |= REGFLAG_R(RTREG); desc->flags |= OPFLAG_WRITES_MEMORY | OPFLAG_CAN_CAUSE_EXCEPTION; return TRUE; case 0x31: case 0x35: desc->regin[0] |= REGFLAG_R(RSREG); desc->regout[1] |= REGFLAG_CPR1(RTREG); desc->flags |= OPFLAG_READS_MEMORY | OPFLAG_CAN_CAUSE_EXCEPTION; return TRUE; case 0x39: case 0x3d: desc->regin[0] |= REGFLAG_R(RSREG); desc->regin[1] |= REGFLAG_CPR1(RTREG); desc->flags |= OPFLAG_WRITES_MEMORY | OPFLAG_CAN_CAUSE_EXCEPTION; return TRUE; case 0x32: case 0x36: desc->regin[0] |= REGFLAG_R(RSREG); desc->flags |= OPFLAG_READS_MEMORY | OPFLAG_CAN_CAUSE_EXCEPTION; return TRUE; case 0x3a: case 0x3e: desc->regin[0] |= REGFLAG_R(RSREG); desc->flags |= OPFLAG_WRITES_MEMORY | OPFLAG_CAN_CAUSE_EXCEPTION; return TRUE; case 0x33: if (mips->flavor < MIPS3_TYPE_MIPS_IV) return FALSE; case 0x2f: return TRUE; } return FALSE; }
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describe_instruction - build a description of a single instruction
[ "describe_instruction", "-", "build", "a", "description", "of", "a", "single", "instruction" ]
[ "/* compute the physical PC */", "/* uh-oh: a page fault; leave the description empty and just if this is the first instruction, leave it empty and */", "/* mark as needing to validate; otherwise, just end the sequence here */", "/* fetch the opcode */", "/* all instructions are 4 bytes and default to a single cycle each */", "/* parse the instruction */", "/* SPECIAL */", "/* REGIMM */", "/* COP0 */", "/* COP1 */", "/* COP2 */", "/* COP1X - MIPS IV */", "/* IDT-specific opcodes: mad/madu/mul on R4640/4650, msub on RC32364 */", "/* J */", "/* JAL */", "/* BEQ */", "/* BNE */", "/* BEQL */", "/* BNEL */", "/* BLEZ */", "/* BGTZ */", "/* BLEZL */", "/* BGTZL */", "/* ADDI */", "/* DADDI */", "/* ADDIU */", "/* SLTI */", "/* SLTIU */", "/* ANDI */", "/* ORI */", "/* XORI */", "/* DADDIU */", "/* LUI */", "/* LDL */", "/* LDR */", "/* LWL */", "/* LWR */", "/* LB */", "/* LH */", "/* LW */", "/* LBU */", "/* LHU */", "/* LWU */", "/* LL */", "/* LLD */", "/* LD */", "/* SB */", "/* SH */", "/* SWL */", "/* SW */", "/* SDL */", "/* SDR */", "/* SWR */", "/* SD */", "/* SC */", "/* SCD */", "/* LWC1 */", "/* LDC1 */", "/* SWC1 */", "/* SDC1 */", "/* LWC2 */", "/* LDC2 */", "/* SWC2 */", "/* SDC2 */", "/* PREF */", "/* CACHE */", "/* effective no-op */" ]
[ { "param": "param", "type": "void" }, { "param": "desc", "type": "opcode_desc" }, { "param": "prev", "type": "opcode_desc" } ]
{ "returns": [], "raises": [], "params": [ { "identifier": "param", "type": "void", "docstring": null, "docstring_tokens": [], "default": null, "is_optional": null }, { "identifier": "desc", "type": "opcode_desc", "docstring": null, "docstring_tokens": [], "default": null, "is_optional": null }, { "identifier": "prev", "type": "opcode_desc", "docstring": null, "docstring_tokens": [], "default": null, "is_optional": null } ], "outlier_params": [], "others": [] }
a4520d0b849fced1efe34e5a922e794d2ea30b67
lofunz/mieme
Reloaded/tags/MAME4droid1.1.2&MAME4iOS 1.1Reloaded/src/emu/cpu/mips/mips3fe.c
[ "Unlicense" ]
C
describe_instruction_special
int
static int describe_instruction_special(mips3_state *mips, UINT32 op, opcode_desc *desc) { switch (op & 63) { case 0x00: /* SLL */ case 0x02: /* SRL */ case 0x03: /* SRA */ case 0x38: /* DSLL */ case 0x3a: /* DSRL */ case 0x3b: /* DSRA */ case 0x3c: /* DSLL32 */ case 0x3e: /* DSRL32 */ case 0x3f: /* DSRA32 */ desc->regin[0] |= REGFLAG_R(RTREG); desc->regout[0] |= REGFLAG_R(RDREG); return TRUE; case 0x0a: /* MOVZ - MIPS IV */ case 0x0b: /* MOVN - MIPS IV */ if (mips->flavor < MIPS3_TYPE_MIPS_IV) return FALSE; desc->regin[0] |= REGFLAG_R(RDREG); case 0x04: /* SLLV */ case 0x06: /* SRLV */ case 0x07: /* SRAV */ case 0x14: /* DSLLV */ case 0x16: /* DSRLV */ case 0x17: /* DSRAV */ case 0x21: /* ADDU */ case 0x23: /* SUBU */ case 0x24: /* AND */ case 0x25: /* OR */ case 0x26: /* XOR */ case 0x27: /* NOR */ case 0x2a: /* SLT */ case 0x2b: /* SLTU */ case 0x2d: /* DADDU */ case 0x2f: /* DSUBU */ desc->regin[0] |= REGFLAG_R(RSREG) | REGFLAG_R(RTREG); desc->regout[0] |= REGFLAG_R(RDREG); return TRUE; case 0x20: /* ADD */ case 0x22: /* SUB */ case 0x2c: /* DADD */ case 0x2e: /* DSUB */ desc->regin[0] |= REGFLAG_R(RSREG) | REGFLAG_R(RTREG); desc->regout[0] |= REGFLAG_R(RDREG); desc->flags |= OPFLAG_CAN_CAUSE_EXCEPTION; return TRUE; case 0x30: /* TGE */ case 0x31: /* TGEU */ case 0x32: /* TLT */ case 0x33: /* TLTU */ case 0x34: /* TEQ */ case 0x36: /* TNE */ desc->regin[0] |= REGFLAG_R(RSREG) | REGFLAG_R(RTREG); desc->flags |= OPFLAG_CAN_CAUSE_EXCEPTION; return TRUE; case 0x01: /* MOVF - MIPS IV */ if (mips->flavor < MIPS3_TYPE_MIPS_IV) return FALSE; desc->regin[0] |= REGFLAG_R(RSREG); desc->regin[2] |= REGFLAG_FCC; desc->regout[0] |= REGFLAG_R(RDREG); return TRUE; case 0x08: /* JR */ desc->regin[0] |= REGFLAG_R(RSREG); desc->flags |= OPFLAG_IS_UNCONDITIONAL_BRANCH | OPFLAG_END_SEQUENCE; desc->targetpc = BRANCH_TARGET_DYNAMIC; desc->delayslots = 1; return TRUE; case 0x09: /* JALR */ desc->regin[0] |= REGFLAG_R(RSREG); desc->regout[0] |= REGFLAG_R(RDREG); desc->flags |= OPFLAG_IS_UNCONDITIONAL_BRANCH | OPFLAG_END_SEQUENCE; desc->targetpc = BRANCH_TARGET_DYNAMIC; desc->delayslots = 1; return TRUE; case 0x10: /* MFHI */ desc->regin[0] |= REGFLAG_HI; desc->regout[0] |= REGFLAG_R(RDREG); return TRUE; case 0x11: /* MTHI */ desc->regin[0] |= REGFLAG_R(RSREG); desc->regout[0] |= REGFLAG_HI; return TRUE; case 0x12: /* MFLO */ desc->regin[2] |= REGFLAG_LO; desc->regout[0] |= REGFLAG_R(RDREG); return TRUE; case 0x13: /* MTLO */ desc->regin[0] |= REGFLAG_R(RSREG); desc->regout[2] |= REGFLAG_LO; return TRUE; case 0x18: /* MULT */ case 0x19: /* MULTU */ desc->regin[0] |= REGFLAG_R(RSREG) | REGFLAG_R(RTREG); desc->regout[2] |= REGFLAG_LO | REGFLAG_HI; desc->cycles = 3; return TRUE; case 0x1a: /* DIV */ case 0x1b: /* DIVU */ desc->regin[0] |= REGFLAG_R(RSREG) | REGFLAG_R(RTREG); desc->regout[2] |= REGFLAG_LO | REGFLAG_HI; desc->cycles = 35; return TRUE; case 0x1c: /* DMULT */ case 0x1d: /* DMULTU */ desc->regin[0] |= REGFLAG_R(RSREG) | REGFLAG_R(RTREG); desc->regout[2] |= REGFLAG_LO | REGFLAG_HI; desc->cycles = 7; return TRUE; case 0x1e: /* DDIV */ case 0x1f: /* DDIVU */ desc->regin[0] |= REGFLAG_R(RSREG) | REGFLAG_R(RTREG); desc->regout[2] |= REGFLAG_LO | REGFLAG_HI; desc->cycles = 67; return TRUE; case 0x0c: /* SYSCALL */ case 0x0d: /* BREAK */ desc->flags |= OPFLAG_WILL_CAUSE_EXCEPTION | OPFLAG_END_SEQUENCE; return TRUE; case 0x0f: /* SYNC */ /* effective no-op */ return TRUE; } return FALSE; }
/*------------------------------------------------- describe_instruction_special - build a description of a single instruction in the 'special' group -------------------------------------------------*/
build a description of a single instruction in the 'special' group
[ "build", "a", "description", "of", "a", "single", "instruction", "in", "the", "'", "special", "'", "group" ]
static int describe_instruction_special(mips3_state *mips, UINT32 op, opcode_desc *desc) { switch (op & 63) { case 0x00: case 0x02: case 0x03: case 0x38: case 0x3a: case 0x3b: case 0x3c: case 0x3e: case 0x3f: desc->regin[0] |= REGFLAG_R(RTREG); desc->regout[0] |= REGFLAG_R(RDREG); return TRUE; case 0x0a: case 0x0b: if (mips->flavor < MIPS3_TYPE_MIPS_IV) return FALSE; desc->regin[0] |= REGFLAG_R(RDREG); case 0x04: case 0x06: case 0x07: case 0x14: case 0x16: case 0x17: case 0x21: case 0x23: case 0x24: case 0x25: case 0x26: case 0x27: case 0x2a: case 0x2b: case 0x2d: case 0x2f: desc->regin[0] |= REGFLAG_R(RSREG) | REGFLAG_R(RTREG); desc->regout[0] |= REGFLAG_R(RDREG); return TRUE; case 0x20: case 0x22: case 0x2c: case 0x2e: desc->regin[0] |= REGFLAG_R(RSREG) | REGFLAG_R(RTREG); desc->regout[0] |= REGFLAG_R(RDREG); desc->flags |= OPFLAG_CAN_CAUSE_EXCEPTION; return TRUE; case 0x30: case 0x31: case 0x32: case 0x33: case 0x34: case 0x36: desc->regin[0] |= REGFLAG_R(RSREG) | REGFLAG_R(RTREG); desc->flags |= OPFLAG_CAN_CAUSE_EXCEPTION; return TRUE; case 0x01: if (mips->flavor < MIPS3_TYPE_MIPS_IV) return FALSE; desc->regin[0] |= REGFLAG_R(RSREG); desc->regin[2] |= REGFLAG_FCC; desc->regout[0] |= REGFLAG_R(RDREG); return TRUE; case 0x08: desc->regin[0] |= REGFLAG_R(RSREG); desc->flags |= OPFLAG_IS_UNCONDITIONAL_BRANCH | OPFLAG_END_SEQUENCE; desc->targetpc = BRANCH_TARGET_DYNAMIC; desc->delayslots = 1; return TRUE; case 0x09: desc->regin[0] |= REGFLAG_R(RSREG); desc->regout[0] |= REGFLAG_R(RDREG); desc->flags |= OPFLAG_IS_UNCONDITIONAL_BRANCH | OPFLAG_END_SEQUENCE; desc->targetpc = BRANCH_TARGET_DYNAMIC; desc->delayslots = 1; return TRUE; case 0x10: desc->regin[0] |= REGFLAG_HI; desc->regout[0] |= REGFLAG_R(RDREG); return TRUE; case 0x11: desc->regin[0] |= REGFLAG_R(RSREG); desc->regout[0] |= REGFLAG_HI; return TRUE; case 0x12: desc->regin[2] |= REGFLAG_LO; desc->regout[0] |= REGFLAG_R(RDREG); return TRUE; case 0x13: desc->regin[0] |= REGFLAG_R(RSREG); desc->regout[2] |= REGFLAG_LO; return TRUE; case 0x18: case 0x19: desc->regin[0] |= REGFLAG_R(RSREG) | REGFLAG_R(RTREG); desc->regout[2] |= REGFLAG_LO | REGFLAG_HI; desc->cycles = 3; return TRUE; case 0x1a: case 0x1b: desc->regin[0] |= REGFLAG_R(RSREG) | REGFLAG_R(RTREG); desc->regout[2] |= REGFLAG_LO | REGFLAG_HI; desc->cycles = 35; return TRUE; case 0x1c: case 0x1d: desc->regin[0] |= REGFLAG_R(RSREG) | REGFLAG_R(RTREG); desc->regout[2] |= REGFLAG_LO | REGFLAG_HI; desc->cycles = 7; return TRUE; case 0x1e: case 0x1f: desc->regin[0] |= REGFLAG_R(RSREG) | REGFLAG_R(RTREG); desc->regout[2] |= REGFLAG_LO | REGFLAG_HI; desc->cycles = 67; return TRUE; case 0x0c: case 0x0d: desc->flags |= OPFLAG_WILL_CAUSE_EXCEPTION | OPFLAG_END_SEQUENCE; return TRUE; case 0x0f: return TRUE; } return FALSE; }
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describe_instruction_special - build a description of a single instruction in the 'special' group
[ "describe_instruction_special", "-", "build", "a", "description", "of", "a", "single", "instruction", "in", "the", "'", "special", "'", "group" ]
[ "/* SLL */", "/* SRL */", "/* SRA */", "/* DSLL */", "/* DSRL */", "/* DSRA */", "/* DSLL32 */", "/* DSRL32 */", "/* DSRA32 */", "/* MOVZ - MIPS IV */", "/* MOVN - MIPS IV */", "/* SLLV */", "/* SRLV */", "/* SRAV */", "/* DSLLV */", "/* DSRLV */", "/* DSRAV */", "/* ADDU */", "/* SUBU */", "/* AND */", "/* OR */", "/* XOR */", "/* NOR */", "/* SLT */", "/* SLTU */", "/* DADDU */", "/* DSUBU */", "/* ADD */", "/* SUB */", "/* DADD */", "/* DSUB */", "/* TGE */", "/* TGEU */", "/* TLT */", "/* TLTU */", "/* TEQ */", "/* TNE */", "/* MOVF - MIPS IV */", "/* JR */", "/* JALR */", "/* MFHI */", "/* MTHI */", "/* MFLO */", "/* MTLO */", "/* MULT */", "/* MULTU */", "/* DIV */", "/* DIVU */", "/* DMULT */", "/* DMULTU */", "/* DDIV */", "/* DDIVU */", "/* SYSCALL */", "/* BREAK */", "/* SYNC */", "/* effective no-op */" ]
[ { "param": "mips", "type": "mips3_state" }, { "param": "op", "type": "UINT32" }, { "param": "desc", "type": "opcode_desc" } ]
{ "returns": [], "raises": [], "params": [ { "identifier": "mips", "type": "mips3_state", "docstring": null, "docstring_tokens": [], "default": null, "is_optional": null }, { "identifier": "op", "type": "UINT32", "docstring": null, "docstring_tokens": [], "default": null, "is_optional": null }, { "identifier": "desc", "type": "opcode_desc", "docstring": null, "docstring_tokens": [], "default": null, "is_optional": null } ], "outlier_params": [], "others": [] }
a4520d0b849fced1efe34e5a922e794d2ea30b67
lofunz/mieme
Reloaded/tags/MAME4droid1.1.2&MAME4iOS 1.1Reloaded/src/emu/cpu/mips/mips3fe.c
[ "Unlicense" ]
C
describe_instruction_regimm
int
static int describe_instruction_regimm(mips3_state *mips, UINT32 op, opcode_desc *desc) { switch (RTREG) { case 0x00: /* BLTZ */ case 0x01: /* BGEZ */ case 0x02: /* BLTZL */ case 0x03: /* BGEZL */ if (RTREG == 0x01 && RSREG == 0) desc->flags |= OPFLAG_IS_UNCONDITIONAL_BRANCH | OPFLAG_END_SEQUENCE; else { desc->regin[0] |= REGFLAG_R(RSREG); desc->flags |= OPFLAG_IS_CONDITIONAL_BRANCH; } desc->targetpc = desc->pc + 4 + (SIMMVAL << 2); desc->delayslots = 1; desc->skipslots = (RTREG & 0x02) ? 1 : 0; return TRUE; case 0x08: /* TGEI */ case 0x09: /* TGEIU */ case 0x0a: /* TLTI */ case 0x0b: /* TLTIU */ case 0x0c: /* TEQI */ case 0x0e: /* TNEI */ desc->regin[0] |= REGFLAG_R(RSREG); desc->flags |= OPFLAG_CAN_CAUSE_EXCEPTION; return TRUE; case 0x10: /* BLTZAL */ case 0x11: /* BGEZAL */ case 0x12: /* BLTZALL */ case 0x13: /* BGEZALL */ if (RTREG == 0x11 && RSREG == 0) desc->flags |= OPFLAG_IS_UNCONDITIONAL_BRANCH | OPFLAG_END_SEQUENCE; else { desc->regin[0] |= REGFLAG_R(RSREG); desc->flags |= OPFLAG_IS_CONDITIONAL_BRANCH; } desc->regout[0] |= REGFLAG_R(31); desc->targetpc = desc->pc + 4 + (SIMMVAL << 2); desc->delayslots = 1; desc->skipslots = (RTREG & 0x02) ? 1 : 0; return TRUE; } return FALSE; }
/*------------------------------------------------- describe_instruction_regimm - build a description of a single instruction in the 'regimm' group -------------------------------------------------*/
build a description of a single instruction in the 'regimm' group
[ "build", "a", "description", "of", "a", "single", "instruction", "in", "the", "'", "regimm", "'", "group" ]
static int describe_instruction_regimm(mips3_state *mips, UINT32 op, opcode_desc *desc) { switch (RTREG) { case 0x00: case 0x01: case 0x02: case 0x03: if (RTREG == 0x01 && RSREG == 0) desc->flags |= OPFLAG_IS_UNCONDITIONAL_BRANCH | OPFLAG_END_SEQUENCE; else { desc->regin[0] |= REGFLAG_R(RSREG); desc->flags |= OPFLAG_IS_CONDITIONAL_BRANCH; } desc->targetpc = desc->pc + 4 + (SIMMVAL << 2); desc->delayslots = 1; desc->skipslots = (RTREG & 0x02) ? 1 : 0; return TRUE; case 0x08: case 0x09: case 0x0a: case 0x0b: case 0x0c: case 0x0e: desc->regin[0] |= REGFLAG_R(RSREG); desc->flags |= OPFLAG_CAN_CAUSE_EXCEPTION; return TRUE; case 0x10: case 0x11: case 0x12: case 0x13: if (RTREG == 0x11 && RSREG == 0) desc->flags |= OPFLAG_IS_UNCONDITIONAL_BRANCH | OPFLAG_END_SEQUENCE; else { desc->regin[0] |= REGFLAG_R(RSREG); desc->flags |= OPFLAG_IS_CONDITIONAL_BRANCH; } desc->regout[0] |= REGFLAG_R(31); desc->targetpc = desc->pc + 4 + (SIMMVAL << 2); desc->delayslots = 1; desc->skipslots = (RTREG & 0x02) ? 1 : 0; return TRUE; } return FALSE; }
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describe_instruction_regimm - build a description of a single instruction in the 'regimm' group
[ "describe_instruction_regimm", "-", "build", "a", "description", "of", "a", "single", "instruction", "in", "the", "'", "regimm", "'", "group" ]
[ "/* BLTZ */", "/* BGEZ */", "/* BLTZL */", "/* BGEZL */", "/* TGEI */", "/* TGEIU */", "/* TLTI */", "/* TLTIU */", "/* TEQI */", "/* TNEI */", "/* BLTZAL */", "/* BGEZAL */", "/* BLTZALL */", "/* BGEZALL */" ]
[ { "param": "mips", "type": "mips3_state" }, { "param": "op", "type": "UINT32" }, { "param": "desc", "type": "opcode_desc" } ]
{ "returns": [], "raises": [], "params": [ { "identifier": "mips", "type": "mips3_state", "docstring": null, "docstring_tokens": [], "default": null, "is_optional": null }, { "identifier": "op", "type": "UINT32", "docstring": null, "docstring_tokens": [], "default": null, "is_optional": null }, { "identifier": "desc", "type": "opcode_desc", "docstring": null, "docstring_tokens": [], "default": null, "is_optional": null } ], "outlier_params": [], "others": [] }
a4520d0b849fced1efe34e5a922e794d2ea30b67
lofunz/mieme
Reloaded/tags/MAME4droid1.1.2&MAME4iOS 1.1Reloaded/src/emu/cpu/mips/mips3fe.c
[ "Unlicense" ]
C
describe_instruction_idt
int
static int describe_instruction_idt(mips3_state *mips, UINT32 op, opcode_desc *desc) { /* only on the R4650 */ if (mips->flavor != MIPS3_TYPE_R4650) return FALSE; switch (op & 0x1f) { case 0: /* MAD */ case 1: /* MADU */ desc->regin[0] |= REGFLAG_R(RSREG) | REGFLAG_R(RTREG); desc->regin[2] |= REGFLAG_LO | REGFLAG_HI; desc->regout[2] |= REGFLAG_LO | REGFLAG_HI; return TRUE; case 2: /* MUL */ desc->regin[0] |= REGFLAG_R(RSREG) | REGFLAG_R(RTREG); desc->regout[0] |= REGFLAG_R(RDREG); desc->cycles = 3; return TRUE; } return FALSE; }
/*------------------------------------------------- describe_instruction_idt - build a description of a single instruction in the IDT-specific group -------------------------------------------------*/
build a description of a single instruction in the IDT-specific group
[ "build", "a", "description", "of", "a", "single", "instruction", "in", "the", "IDT", "-", "specific", "group" ]
static int describe_instruction_idt(mips3_state *mips, UINT32 op, opcode_desc *desc) { if (mips->flavor != MIPS3_TYPE_R4650) return FALSE; switch (op & 0x1f) { case 0: case 1: desc->regin[0] |= REGFLAG_R(RSREG) | REGFLAG_R(RTREG); desc->regin[2] |= REGFLAG_LO | REGFLAG_HI; desc->regout[2] |= REGFLAG_LO | REGFLAG_HI; return TRUE; case 2: desc->regin[0] |= REGFLAG_R(RSREG) | REGFLAG_R(RTREG); desc->regout[0] |= REGFLAG_R(RDREG); desc->cycles = 3; return TRUE; } return FALSE; }
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describe_instruction_idt - build a description of a single instruction in the IDT-specific group
[ "describe_instruction_idt", "-", "build", "a", "description", "of", "a", "single", "instruction", "in", "the", "IDT", "-", "specific", "group" ]
[ "/* only on the R4650 */", "/* MAD */", "/* MADU */", "/* MUL */" ]
[ { "param": "mips", "type": "mips3_state" }, { "param": "op", "type": "UINT32" }, { "param": "desc", "type": "opcode_desc" } ]
{ "returns": [], "raises": [], "params": [ { "identifier": "mips", "type": "mips3_state", "docstring": null, "docstring_tokens": [], "default": null, "is_optional": null }, { "identifier": "op", "type": "UINT32", "docstring": null, "docstring_tokens": [], "default": null, "is_optional": null }, { "identifier": "desc", "type": "opcode_desc", "docstring": null, "docstring_tokens": [], "default": null, "is_optional": null } ], "outlier_params": [], "others": [] }
a4520d0b849fced1efe34e5a922e794d2ea30b67
lofunz/mieme
Reloaded/tags/MAME4droid1.1.2&MAME4iOS 1.1Reloaded/src/emu/cpu/mips/mips3fe.c
[ "Unlicense" ]
C
describe_instruction_cop0
int
static int describe_instruction_cop0(mips3_state *mips, UINT32 op, opcode_desc *desc) { /* any COP0 instruction can potentially cause an exception */ desc->flags |= OPFLAG_CAN_CAUSE_EXCEPTION; switch (RSREG) { case 0x00: /* MFCz */ case 0x01: /* DMFCz */ if (RDREG == COP0_Count) desc->cycles += MIPS3_COUNT_READ_CYCLES; if (RDREG == COP0_Cause) desc->cycles += MIPS3_CAUSE_READ_CYCLES; desc->regout[0] |= REGFLAG_R(RTREG); return TRUE; case 0x02: /* CFCz */ desc->regout[0] |= REGFLAG_R(RTREG); return TRUE; case 0x04: /* MTCz */ case 0x05: /* DMTCz */ case 0x06: /* CTCz */ desc->regin[0] |= REGFLAG_R(RTREG); if (RSREG == 0x04 || RSREG == 0x05) { if (RDREG == COP0_Cause) desc->flags |= OPFLAG_CAN_TRIGGER_SW_INT; if (RDREG == COP0_Status) desc->flags |= OPFLAG_CAN_EXPOSE_EXTERNAL_INT | OPFLAG_CAN_CHANGE_MODES | OPFLAG_END_SEQUENCE; } return TRUE; case 0x08: /* BC */ switch (RTREG) { case 0x00: /* BCzF */ case 0x01: /* BCzT */ desc->flags |= OPFLAG_IS_CONDITIONAL_BRANCH; desc->targetpc = desc->pc + 4 + (SIMMVAL << 2); desc->delayslots = 1; return TRUE; } return FALSE; case 0x10: case 0x11: case 0x12: case 0x13: case 0x14: case 0x15: case 0x16: case 0x17: case 0x18: case 0x19: case 0x1a: case 0x1b: case 0x1c: case 0x1d: case 0x1e: case 0x1f: /* COP */ switch (op & 0x01ffffff) { case 0x01: /* TLBR */ case 0x08: /* TLBP */ case 0x20: /* WAIT */ return TRUE; case 0x02: /* TLBWI */ case 0x06: /* TLBWR */ desc->flags |= OPFLAG_MODIFIES_TRANSLATION; return TRUE; case 0x18: /* ERET */ desc->flags |= OPFLAG_CAN_CHANGE_MODES | OPFLAG_IS_UNCONDITIONAL_BRANCH | OPFLAG_END_SEQUENCE; return TRUE; } return FALSE; } return FALSE; }
/*------------------------------------------------- describe_instruction_cop0 - build a description of a single instruction in the COP0 group -------------------------------------------------*/
build a description of a single instruction in the COP0 group
[ "build", "a", "description", "of", "a", "single", "instruction", "in", "the", "COP0", "group" ]
static int describe_instruction_cop0(mips3_state *mips, UINT32 op, opcode_desc *desc) { desc->flags |= OPFLAG_CAN_CAUSE_EXCEPTION; switch (RSREG) { case 0x00: case 0x01: if (RDREG == COP0_Count) desc->cycles += MIPS3_COUNT_READ_CYCLES; if (RDREG == COP0_Cause) desc->cycles += MIPS3_CAUSE_READ_CYCLES; desc->regout[0] |= REGFLAG_R(RTREG); return TRUE; case 0x02: desc->regout[0] |= REGFLAG_R(RTREG); return TRUE; case 0x04: case 0x05: case 0x06: desc->regin[0] |= REGFLAG_R(RTREG); if (RSREG == 0x04 || RSREG == 0x05) { if (RDREG == COP0_Cause) desc->flags |= OPFLAG_CAN_TRIGGER_SW_INT; if (RDREG == COP0_Status) desc->flags |= OPFLAG_CAN_EXPOSE_EXTERNAL_INT | OPFLAG_CAN_CHANGE_MODES | OPFLAG_END_SEQUENCE; } return TRUE; case 0x08: switch (RTREG) { case 0x00: case 0x01: desc->flags |= OPFLAG_IS_CONDITIONAL_BRANCH; desc->targetpc = desc->pc + 4 + (SIMMVAL << 2); desc->delayslots = 1; return TRUE; } return FALSE; case 0x10: case 0x11: case 0x12: case 0x13: case 0x14: case 0x15: case 0x16: case 0x17: case 0x18: case 0x19: case 0x1a: case 0x1b: case 0x1c: case 0x1d: case 0x1e: case 0x1f: switch (op & 0x01ffffff) { case 0x01: case 0x08: case 0x20: return TRUE; case 0x02: case 0x06: desc->flags |= OPFLAG_MODIFIES_TRANSLATION; return TRUE; case 0x18: desc->flags |= OPFLAG_CAN_CHANGE_MODES | OPFLAG_IS_UNCONDITIONAL_BRANCH | OPFLAG_END_SEQUENCE; return TRUE; } return FALSE; } return FALSE; }
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describe_instruction_cop0 - build a description of a single instruction in the COP0 group
[ "describe_instruction_cop0", "-", "build", "a", "description", "of", "a", "single", "instruction", "in", "the", "COP0", "group" ]
[ "/* any COP0 instruction can potentially cause an exception */", "/* MFCz */", "/* DMFCz */", "/* CFCz */", "/* MTCz */", "/* DMTCz */", "/* CTCz */", "/* BC */", "/* BCzF */", "/* BCzT */", "/* COP */", "/* TLBR */", "/* TLBP */", "/* WAIT */", "/* TLBWI */", "/* TLBWR */", "/* ERET */" ]
[ { "param": "mips", "type": "mips3_state" }, { "param": "op", "type": "UINT32" }, { "param": "desc", "type": "opcode_desc" } ]
{ "returns": [], "raises": [], "params": [ { "identifier": "mips", "type": "mips3_state", "docstring": null, "docstring_tokens": [], "default": null, "is_optional": null }, { "identifier": "op", "type": "UINT32", "docstring": null, "docstring_tokens": [], "default": null, "is_optional": null }, { "identifier": "desc", "type": "opcode_desc", "docstring": null, "docstring_tokens": [], "default": null, "is_optional": null } ], "outlier_params": [], "others": [] }
a4520d0b849fced1efe34e5a922e794d2ea30b67
lofunz/mieme
Reloaded/tags/MAME4droid1.1.2&MAME4iOS 1.1Reloaded/src/emu/cpu/mips/mips3fe.c
[ "Unlicense" ]
C
describe_instruction_cop1
int
static int describe_instruction_cop1(mips3_state *mips, UINT32 op, opcode_desc *desc) { /* any COP1 instruction can potentially cause an exception */ // desc->flags |= OPFLAG_CAN_CAUSE_EXCEPTION; switch (RSREG) { case 0x00: /* MFCz */ case 0x01: /* DMFCz */ desc->regin[1] |= REGFLAG_CPR1(RDREG); desc->regout[0] |= REGFLAG_R(RTREG); return TRUE; case 0x02: /* CFCz */ desc->regout[0] |= REGFLAG_R(RTREG); return TRUE; case 0x04: /* MTCz */ case 0x05: /* DMTCz */ desc->regin[0] |= REGFLAG_R(RTREG); desc->regout[1] |= REGFLAG_CPR1(RDREG); return TRUE; case 0x06: /* CTCz */ desc->regin[0] |= REGFLAG_R(RTREG); return TRUE; case 0x08: /* BC */ switch (RTREG & 3) { case 0x00: /* BCzF */ case 0x01: /* BCzT */ case 0x02: /* BCzFL */ case 0x03: /* BCzTL */ desc->regin[2] |= REGFLAG_FCC; desc->flags |= OPFLAG_IS_CONDITIONAL_BRANCH; desc->targetpc = desc->pc + 4 + (SIMMVAL << 2); desc->delayslots = 1; desc->skipslots = (RTREG & 0x02) ? 1 : 0; return TRUE; } return FALSE; case 0x10: case 0x11: case 0x12: case 0x13: case 0x14: case 0x15: case 0x16: case 0x17: case 0x18: case 0x19: case 0x1a: case 0x1b: case 0x1c: case 0x1d: case 0x1e: case 0x1f: /* COP */ switch (op & 0x3f) { case 0x12: /* MOVZ - MIPS IV */ case 0x13: /* MOVN - MIPS IV */ if (mips->flavor < MIPS3_TYPE_MIPS_IV) return FALSE; case 0x00: /* ADD */ case 0x01: /* SUB */ case 0x02: /* MUL */ case 0x03: /* DIV */ desc->regin[1] |= REGFLAG_CPR1(FSREG) | REGFLAG_CPR1(FTREG); desc->regout[1] |= REGFLAG_CPR1(FDREG); return TRUE; case 0x15: /* RECIP - MIPS IV */ case 0x16: /* RSQRT - MIPS IV */ if (mips->flavor < MIPS3_TYPE_MIPS_IV) return FALSE; case 0x04: /* SQRT */ case 0x05: /* ABS */ case 0x06: /* MOV */ case 0x07: /* NEG */ case 0x08: /* ROUND.L */ case 0x09: /* TRUNC.L */ case 0x0a: /* CEIL.L */ case 0x0b: /* FLOOR.L */ case 0x0c: /* ROUND.W */ case 0x0d: /* TRUNC.W */ case 0x0e: /* CEIL.W */ case 0x0f: /* FLOOR.W */ case 0x20: /* CVT.S */ case 0x21: /* CVT.D */ case 0x24: /* CVT.W */ case 0x25: /* CVT.L */ desc->regin[1] |= REGFLAG_CPR1(FSREG); desc->regout[1] |= REGFLAG_CPR1(FDREG); return TRUE; case 0x11: /* MOVT/F - MIPS IV */ if (mips->flavor < MIPS3_TYPE_MIPS_IV) return FALSE; desc->regin[1] |= REGFLAG_CPR1(FSREG); desc->regin[2] |= REGFLAG_FCC; desc->regout[1] |= REGFLAG_CPR1(FDREG); return TRUE; case 0x30: case 0x38: /* C.F */ case 0x31: case 0x39: /* C.UN */ desc->regout[2] |= REGFLAG_FCC; return TRUE; case 0x32: case 0x3a: /* C.EQ */ case 0x33: case 0x3b: /* C.UEQ */ case 0x34: case 0x3c: /* C.OLT */ case 0x35: case 0x3d: /* C.ULT */ case 0x36: case 0x3e: /* C.OLE */ case 0x37: case 0x3f: /* C.ULE */ desc->regin[1] |= REGFLAG_CPR1(FSREG) | REGFLAG_CPR1(FTREG); desc->regout[2] |= REGFLAG_FCC; return TRUE; } return FALSE; } return FALSE; }
/*------------------------------------------------- describe_instruction_cop1 - build a description of a single instruction in the COP1 group -------------------------------------------------*/
build a description of a single instruction in the COP1 group
[ "build", "a", "description", "of", "a", "single", "instruction", "in", "the", "COP1", "group" ]
static int describe_instruction_cop1(mips3_state *mips, UINT32 op, opcode_desc *desc) { switch (RSREG) { case 0x00: case 0x01: desc->regin[1] |= REGFLAG_CPR1(RDREG); desc->regout[0] |= REGFLAG_R(RTREG); return TRUE; case 0x02: desc->regout[0] |= REGFLAG_R(RTREG); return TRUE; case 0x04: case 0x05: desc->regin[0] |= REGFLAG_R(RTREG); desc->regout[1] |= REGFLAG_CPR1(RDREG); return TRUE; case 0x06: desc->regin[0] |= REGFLAG_R(RTREG); return TRUE; case 0x08: switch (RTREG & 3) { case 0x00: case 0x01: case 0x02: case 0x03: desc->regin[2] |= REGFLAG_FCC; desc->flags |= OPFLAG_IS_CONDITIONAL_BRANCH; desc->targetpc = desc->pc + 4 + (SIMMVAL << 2); desc->delayslots = 1; desc->skipslots = (RTREG & 0x02) ? 1 : 0; return TRUE; } return FALSE; case 0x10: case 0x11: case 0x12: case 0x13: case 0x14: case 0x15: case 0x16: case 0x17: case 0x18: case 0x19: case 0x1a: case 0x1b: case 0x1c: case 0x1d: case 0x1e: case 0x1f: switch (op & 0x3f) { case 0x12: case 0x13: if (mips->flavor < MIPS3_TYPE_MIPS_IV) return FALSE; case 0x00: case 0x01: case 0x02: case 0x03: desc->regin[1] |= REGFLAG_CPR1(FSREG) | REGFLAG_CPR1(FTREG); desc->regout[1] |= REGFLAG_CPR1(FDREG); return TRUE; case 0x15: case 0x16: if (mips->flavor < MIPS3_TYPE_MIPS_IV) return FALSE; case 0x04: case 0x05: case 0x06: case 0x07: case 0x08: case 0x09: case 0x0a: case 0x0b: case 0x0c: case 0x0d: case 0x0e: case 0x0f: case 0x20: case 0x21: case 0x24: case 0x25: desc->regin[1] |= REGFLAG_CPR1(FSREG); desc->regout[1] |= REGFLAG_CPR1(FDREG); return TRUE; case 0x11: if (mips->flavor < MIPS3_TYPE_MIPS_IV) return FALSE; desc->regin[1] |= REGFLAG_CPR1(FSREG); desc->regin[2] |= REGFLAG_FCC; desc->regout[1] |= REGFLAG_CPR1(FDREG); return TRUE; case 0x30: case 0x38: case 0x31: case 0x39: desc->regout[2] |= REGFLAG_FCC; return TRUE; case 0x32: case 0x3a: case 0x33: case 0x3b: case 0x34: case 0x3c: case 0x35: case 0x3d: case 0x36: case 0x3e: case 0x37: case 0x3f: desc->regin[1] |= REGFLAG_CPR1(FSREG) | REGFLAG_CPR1(FTREG); desc->regout[2] |= REGFLAG_FCC; return TRUE; } return FALSE; } return FALSE; }
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describe_instruction_cop1 - build a description of a single instruction in the COP1 group
[ "describe_instruction_cop1", "-", "build", "a", "description", "of", "a", "single", "instruction", "in", "the", "COP1", "group" ]
[ "/* any COP1 instruction can potentially cause an exception */", "// desc->flags |= OPFLAG_CAN_CAUSE_EXCEPTION;\r", "/* MFCz */", "/* DMFCz */", "/* CFCz */", "/* MTCz */", "/* DMTCz */", "/* CTCz */", "/* BC */", "/* BCzF */", "/* BCzT */", "/* BCzFL */", "/* BCzTL */", "/* COP */", "/* MOVZ - MIPS IV */", "/* MOVN - MIPS IV */", "/* ADD */", "/* SUB */", "/* MUL */", "/* DIV */", "/* RECIP - MIPS IV */", "/* RSQRT - MIPS IV */", "/* SQRT */", "/* ABS */", "/* MOV */", "/* NEG */", "/* ROUND.L */", "/* TRUNC.L */", "/* CEIL.L */", "/* FLOOR.L */", "/* ROUND.W */", "/* TRUNC.W */", "/* CEIL.W */", "/* FLOOR.W */", "/* CVT.S */", "/* CVT.D */", "/* CVT.W */", "/* CVT.L */", "/* MOVT/F - MIPS IV */", "/* C.F */", "/* C.UN */", "/* C.EQ */", "/* C.UEQ */", "/* C.OLT */", "/* C.ULT */", "/* C.OLE */", "/* C.ULE */" ]
[ { "param": "mips", "type": "mips3_state" }, { "param": "op", "type": "UINT32" }, { "param": "desc", "type": "opcode_desc" } ]
{ "returns": [], "raises": [], "params": [ { "identifier": "mips", "type": "mips3_state", "docstring": null, "docstring_tokens": [], "default": null, "is_optional": null }, { "identifier": "op", "type": "UINT32", "docstring": null, "docstring_tokens": [], "default": null, "is_optional": null }, { "identifier": "desc", "type": "opcode_desc", "docstring": null, "docstring_tokens": [], "default": null, "is_optional": null } ], "outlier_params": [], "others": [] }
a4520d0b849fced1efe34e5a922e794d2ea30b67
lofunz/mieme
Reloaded/tags/MAME4droid1.1.2&MAME4iOS 1.1Reloaded/src/emu/cpu/mips/mips3fe.c
[ "Unlicense" ]
C
describe_instruction_cop1x
int
static int describe_instruction_cop1x(mips3_state *mips, UINT32 op, opcode_desc *desc) { /* any COP1 instruction can potentially cause an exception */ // desc->flags |= OPFLAG_CAN_CAUSE_EXCEPTION; switch (op & 0x3f) { case 0x00: /* LWXC1 */ case 0x01: /* LDXC1 */ desc->regin[0] |= REGFLAG_R(RSREG) | REGFLAG_R(RTREG); desc->regout[1] |= REGFLAG_CPR1(FDREG); desc->flags |= OPFLAG_READS_MEMORY; return TRUE; case 0x08: /* SWXC1 */ case 0x09: /* SDXC1 */ desc->regin[0] |= REGFLAG_R(RSREG) | REGFLAG_R(RTREG); desc->regin[1] |= REGFLAG_CPR1(FDREG); desc->flags |= OPFLAG_WRITES_MEMORY; return TRUE; case 0x0f: /* PREFX */ /* effective no-op */ return TRUE; case 0x20: case 0x21: /* MADD */ case 0x28: case 0x29: /* MSUB */ case 0x30: case 0x31: /* NMADD */ case 0x38: case 0x39: /* NMSUB */ desc->regin[1] |= REGFLAG_CPR1(FSREG) | REGFLAG_CPR1(FTREG) | REGFLAG_CPR1(FRREG); desc->regout[1] |= REGFLAG_CPR1(FDREG); return TRUE; } return FALSE; }
/*------------------------------------------------- describe_instruction_cop1x - build a description of a single instruction in the COP1X group -------------------------------------------------*/
build a description of a single instruction in the COP1X group
[ "build", "a", "description", "of", "a", "single", "instruction", "in", "the", "COP1X", "group" ]
static int describe_instruction_cop1x(mips3_state *mips, UINT32 op, opcode_desc *desc) { switch (op & 0x3f) { case 0x00: case 0x01: desc->regin[0] |= REGFLAG_R(RSREG) | REGFLAG_R(RTREG); desc->regout[1] |= REGFLAG_CPR1(FDREG); desc->flags |= OPFLAG_READS_MEMORY; return TRUE; case 0x08: case 0x09: desc->regin[0] |= REGFLAG_R(RSREG) | REGFLAG_R(RTREG); desc->regin[1] |= REGFLAG_CPR1(FDREG); desc->flags |= OPFLAG_WRITES_MEMORY; return TRUE; case 0x0f: return TRUE; case 0x20: case 0x21: case 0x28: case 0x29: case 0x30: case 0x31: case 0x38: case 0x39: desc->regin[1] |= REGFLAG_CPR1(FSREG) | REGFLAG_CPR1(FTREG) | REGFLAG_CPR1(FRREG); desc->regout[1] |= REGFLAG_CPR1(FDREG); return TRUE; } return FALSE; }
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describe_instruction_cop1x - build a description of a single instruction in the COP1X group
[ "describe_instruction_cop1x", "-", "build", "a", "description", "of", "a", "single", "instruction", "in", "the", "COP1X", "group" ]
[ "/* any COP1 instruction can potentially cause an exception */", "// desc->flags |= OPFLAG_CAN_CAUSE_EXCEPTION;\r", "/* LWXC1 */", "/* LDXC1 */", "/* SWXC1 */", "/* SDXC1 */", "/* PREFX */", "/* effective no-op */", "/* MADD */", "/* MSUB */", "/* NMADD */", "/* NMSUB */" ]
[ { "param": "mips", "type": "mips3_state" }, { "param": "op", "type": "UINT32" }, { "param": "desc", "type": "opcode_desc" } ]
{ "returns": [], "raises": [], "params": [ { "identifier": "mips", "type": "mips3_state", "docstring": null, "docstring_tokens": [], "default": null, "is_optional": null }, { "identifier": "op", "type": "UINT32", "docstring": null, "docstring_tokens": [], "default": null, "is_optional": null }, { "identifier": "desc", "type": "opcode_desc", "docstring": null, "docstring_tokens": [], "default": null, "is_optional": null } ], "outlier_params": [], "others": [] }
a4520d0b849fced1efe34e5a922e794d2ea30b67
lofunz/mieme
Reloaded/tags/MAME4droid1.1.2&MAME4iOS 1.1Reloaded/src/emu/cpu/mips/mips3fe.c
[ "Unlicense" ]
C
describe_instruction_cop2
int
static int describe_instruction_cop2(mips3_state *mips, UINT32 op, opcode_desc *desc) { /* any COP2 instruction can potentially cause an exception */ desc->flags |= OPFLAG_CAN_CAUSE_EXCEPTION; switch (RSREG) { case 0x00: /* MFCz */ case 0x01: /* DMFCz */ case 0x02: /* CFCz */ desc->regout[0] |= REGFLAG_R(RTREG); return TRUE; case 0x04: /* MTCz */ case 0x05: /* DMTCz */ case 0x06: /* CTCz */ desc->regin[0] |= REGFLAG_R(RTREG); return TRUE; case 0x08: /* BC */ switch (RTREG) { case 0x00: /* BCzF */ case 0x01: /* BCzT */ desc->flags |= OPFLAG_IS_CONDITIONAL_BRANCH; desc->targetpc = desc->pc + 4 + (SIMMVAL << 2); desc->delayslots = 1; return TRUE; } return FALSE; } return FALSE; }
/*------------------------------------------------- describe_instruction_cop2 - build a description of a single instruction in the COP2 group -------------------------------------------------*/
build a description of a single instruction in the COP2 group
[ "build", "a", "description", "of", "a", "single", "instruction", "in", "the", "COP2", "group" ]
static int describe_instruction_cop2(mips3_state *mips, UINT32 op, opcode_desc *desc) { desc->flags |= OPFLAG_CAN_CAUSE_EXCEPTION; switch (RSREG) { case 0x00: case 0x01: case 0x02: desc->regout[0] |= REGFLAG_R(RTREG); return TRUE; case 0x04: case 0x05: case 0x06: desc->regin[0] |= REGFLAG_R(RTREG); return TRUE; case 0x08: switch (RTREG) { case 0x00: case 0x01: desc->flags |= OPFLAG_IS_CONDITIONAL_BRANCH; desc->targetpc = desc->pc + 4 + (SIMMVAL << 2); desc->delayslots = 1; return TRUE; } return FALSE; } return FALSE; }
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describe_instruction_cop2 - build a description of a single instruction in the COP2 group
[ "describe_instruction_cop2", "-", "build", "a", "description", "of", "a", "single", "instruction", "in", "the", "COP2", "group" ]
[ "/* any COP2 instruction can potentially cause an exception */", "/* MFCz */", "/* DMFCz */", "/* CFCz */", "/* MTCz */", "/* DMTCz */", "/* CTCz */", "/* BC */", "/* BCzF */", "/* BCzT */" ]
[ { "param": "mips", "type": "mips3_state" }, { "param": "op", "type": "UINT32" }, { "param": "desc", "type": "opcode_desc" } ]
{ "returns": [], "raises": [], "params": [ { "identifier": "mips", "type": "mips3_state", "docstring": null, "docstring_tokens": [], "default": null, "is_optional": null }, { "identifier": "op", "type": "UINT32", "docstring": null, "docstring_tokens": [], "default": null, "is_optional": null }, { "identifier": "desc", "type": "opcode_desc", "docstring": null, "docstring_tokens": [], "default": null, "is_optional": null } ], "outlier_params": [], "others": [] }
a460bd2445830158d2feca1fcf3c6320d7e6f1e0
lofunz/mieme
Reloaded/trunk/src/emu/fileio.c
[ "Unlicense" ]
C
mame_fopen
file_error
file_error mame_fopen(const char *searchpath, const char *filename, UINT32 openflags, mame_file **file) { path_iterator iterator; path_iterator_init(&iterator, mame_options(), searchpath); return fopen_internal(mame_options(), &iterator, filename, 0, openflags, file); }
/*------------------------------------------------- mame_fopen - open a file for access and return an error code -------------------------------------------------*/
open a file for access and return an error code
[ "open", "a", "file", "for", "access", "and", "return", "an", "error", "code" ]
file_error mame_fopen(const char *searchpath, const char *filename, UINT32 openflags, mame_file **file) { path_iterator iterator; path_iterator_init(&iterator, mame_options(), searchpath); return fopen_internal(mame_options(), &iterator, filename, 0, openflags, file); }
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mame_fopen - open a file for access and return an error code
[ "mame_fopen", "-", "open", "a", "file", "for", "access", "and", "return", "an", "error", "code" ]
[]
[ { "param": "searchpath", "type": "char" }, { "param": "filename", "type": "char" }, { "param": "openflags", "type": "UINT32" }, { "param": "file", "type": "mame_file" } ]
{ "returns": [], "raises": [], "params": [ { "identifier": "searchpath", "type": "char", "docstring": null, "docstring_tokens": [], "default": null, "is_optional": null }, { "identifier": "filename", "type": "char", "docstring": null, "docstring_tokens": [], "default": null, "is_optional": null }, { "identifier": "openflags", "type": "UINT32", "docstring": null, "docstring_tokens": [], "default": null, "is_optional": null }, { "identifier": "file", "type": "mame_file", "docstring": null, "docstring_tokens": [], "default": null, "is_optional": null } ], "outlier_params": [], "others": [] }
a460bd2445830158d2feca1fcf3c6320d7e6f1e0
lofunz/mieme
Reloaded/trunk/src/emu/fileio.c
[ "Unlicense" ]
C
mame_fopen_crc
file_error
file_error mame_fopen_crc(const char *searchpath, const char *filename, UINT32 crc, UINT32 openflags, mame_file **file) { path_iterator iterator; path_iterator_init(&iterator, mame_options(), searchpath); return mame_fopen_crc_options(mame_options(), searchpath, filename, crc, openflags, file); }
/*------------------------------------------------- mame_fopen_crc - open a file by name or CRC and return an error code -------------------------------------------------*/
open a file by name or CRC and return an error code
[ "open", "a", "file", "by", "name", "or", "CRC", "and", "return", "an", "error", "code" ]
file_error mame_fopen_crc(const char *searchpath, const char *filename, UINT32 crc, UINT32 openflags, mame_file **file) { path_iterator iterator; path_iterator_init(&iterator, mame_options(), searchpath); return mame_fopen_crc_options(mame_options(), searchpath, filename, crc, openflags, file); }
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mame_fopen_crc - open a file by name or CRC and return an error code
[ "mame_fopen_crc", "-", "open", "a", "file", "by", "name", "or", "CRC", "and", "return", "an", "error", "code" ]
[]
[ { "param": "searchpath", "type": "char" }, { "param": "filename", "type": "char" }, { "param": "crc", "type": "UINT32" }, { "param": "openflags", "type": "UINT32" }, { "param": "file", "type": "mame_file" } ]
{ "returns": [], "raises": [], "params": [ { "identifier": "searchpath", "type": "char", "docstring": null, "docstring_tokens": [], "default": null, "is_optional": null }, { "identifier": "filename", "type": "char", "docstring": null, "docstring_tokens": [], "default": null, "is_optional": null }, { "identifier": "crc", "type": "UINT32", "docstring": null, "docstring_tokens": [], "default": null, "is_optional": null }, { "identifier": "openflags", "type": "UINT32", "docstring": null, "docstring_tokens": [], "default": null, "is_optional": null }, { "identifier": "file", "type": "mame_file", "docstring": null, "docstring_tokens": [], "default": null, "is_optional": null } ], "outlier_params": [], "others": [] }
a460bd2445830158d2feca1fcf3c6320d7e6f1e0
lofunz/mieme
Reloaded/trunk/src/emu/fileio.c
[ "Unlicense" ]
C
mame_fopen_options
file_error
file_error mame_fopen_options(core_options *opts, const char *searchpath, const char *filename, UINT32 openflags, mame_file **file) { path_iterator iterator; path_iterator_init(&iterator, opts, searchpath); return fopen_internal(opts, &iterator, filename, 0, openflags, file); }
/*------------------------------------------------- mame_fopen_options - open a file for access and return an error code -------------------------------------------------*/
open a file for access and return an error code
[ "open", "a", "file", "for", "access", "and", "return", "an", "error", "code" ]
file_error mame_fopen_options(core_options *opts, const char *searchpath, const char *filename, UINT32 openflags, mame_file **file) { path_iterator iterator; path_iterator_init(&iterator, opts, searchpath); return fopen_internal(opts, &iterator, filename, 0, openflags, file); }
[ "file_error", "mame_fopen_options", "(", "core_options", "*", "opts", ",", "const", "char", "*", "searchpath", ",", "const", "char", "*", "filename", ",", "UINT32", "openflags", ",", "mame_file", "*", "*", "file", ")", "{", "path_iterator", "iterator", ";", "path_iterator_init", "(", "&", "iterator", ",", "opts", ",", "searchpath", ")", ";", "return", "fopen_internal", "(", "opts", ",", "&", "iterator", ",", "filename", ",", "0", ",", "openflags", ",", "file", ")", ";", "}" ]
mame_fopen_options - open a file for access and return an error code
[ "mame_fopen_options", "-", "open", "a", "file", "for", "access", "and", "return", "an", "error", "code" ]
[]
[ { "param": "opts", "type": "core_options" }, { "param": "searchpath", "type": "char" }, { "param": "filename", "type": "char" }, { "param": "openflags", "type": "UINT32" }, { "param": "file", "type": "mame_file" } ]
{ "returns": [], "raises": [], "params": [ { "identifier": "opts", "type": "core_options", "docstring": null, "docstring_tokens": [], "default": null, "is_optional": null }, { "identifier": "searchpath", "type": "char", "docstring": null, "docstring_tokens": [], "default": null, "is_optional": null }, { "identifier": "filename", "type": "char", "docstring": null, "docstring_tokens": [], "default": null, "is_optional": null }, { "identifier": "openflags", "type": "UINT32", "docstring": null, "docstring_tokens": [], "default": null, "is_optional": null }, { "identifier": "file", "type": "mame_file", "docstring": null, "docstring_tokens": [], "default": null, "is_optional": null } ], "outlier_params": [], "others": [] }
a460bd2445830158d2feca1fcf3c6320d7e6f1e0
lofunz/mieme
Reloaded/trunk/src/emu/fileio.c
[ "Unlicense" ]
C
mame_fopen_crc_options
file_error
file_error mame_fopen_crc_options(core_options *opts, const char *searchpath, const char *filename, UINT32 crc, UINT32 openflags, mame_file **file) { path_iterator iterator; path_iterator_init(&iterator, opts, searchpath); return fopen_internal(opts, &iterator, filename, crc, openflags | OPEN_FLAG_HAS_CRC, file); }
/*------------------------------------------------- mame_fopen_crc_options - open a file by name or CRC and return an error code -------------------------------------------------*/
open a file by name or CRC and return an error code
[ "open", "a", "file", "by", "name", "or", "CRC", "and", "return", "an", "error", "code" ]
file_error mame_fopen_crc_options(core_options *opts, const char *searchpath, const char *filename, UINT32 crc, UINT32 openflags, mame_file **file) { path_iterator iterator; path_iterator_init(&iterator, opts, searchpath); return fopen_internal(opts, &iterator, filename, crc, openflags | OPEN_FLAG_HAS_CRC, file); }
[ "file_error", "mame_fopen_crc_options", "(", "core_options", "*", "opts", ",", "const", "char", "*", "searchpath", ",", "const", "char", "*", "filename", ",", "UINT32", "crc", ",", "UINT32", "openflags", ",", "mame_file", "*", "*", "file", ")", "{", "path_iterator", "iterator", ";", "path_iterator_init", "(", "&", "iterator", ",", "opts", ",", "searchpath", ")", ";", "return", "fopen_internal", "(", "opts", ",", "&", "iterator", ",", "filename", ",", "crc", ",", "openflags", "|", "OPEN_FLAG_HAS_CRC", ",", "file", ")", ";", "}" ]
mame_fopen_crc_options - open a file by name or CRC and return an error code
[ "mame_fopen_crc_options", "-", "open", "a", "file", "by", "name", "or", "CRC", "and", "return", "an", "error", "code" ]
[]
[ { "param": "opts", "type": "core_options" }, { "param": "searchpath", "type": "char" }, { "param": "filename", "type": "char" }, { "param": "crc", "type": "UINT32" }, { "param": "openflags", "type": "UINT32" }, { "param": "file", "type": "mame_file" } ]
{ "returns": [], "raises": [], "params": [ { "identifier": "opts", "type": "core_options", "docstring": null, "docstring_tokens": [], "default": null, "is_optional": null }, { "identifier": "searchpath", "type": "char", "docstring": null, "docstring_tokens": [], "default": null, "is_optional": null }, { "identifier": "filename", "type": "char", "docstring": null, "docstring_tokens": [], "default": null, "is_optional": null }, { "identifier": "crc", "type": "UINT32", "docstring": null, "docstring_tokens": [], "default": null, "is_optional": null }, { "identifier": "openflags", "type": "UINT32", "docstring": null, "docstring_tokens": [], "default": null, "is_optional": null }, { "identifier": "file", "type": "mame_file", "docstring": null, "docstring_tokens": [], "default": null, "is_optional": null } ], "outlier_params": [], "others": [] }
a460bd2445830158d2feca1fcf3c6320d7e6f1e0
lofunz/mieme
Reloaded/trunk/src/emu/fileio.c
[ "Unlicense" ]
C
mame_fopen_ram
file_error
file_error mame_fopen_ram(const void *data, UINT32 length, UINT32 openflags, mame_file **file) { file_error filerr; /* allocate the file itself */ *file = global_alloc_clear(mame_file); /* reset the file handle */ (*file)->openflags = openflags; #ifdef DEBUG_COOKIE (*file)->debug_cookie = DEBUG_COOKIE; #endif /* attempt to open the file directly */ filerr = core_fopen_ram(data, length, openflags, &(*file)->file); if (filerr == FILERR_NONE) goto error; /* handle errors and return */ error: if (filerr != FILERR_NONE) { mame_fclose(*file); *file = NULL; } return filerr; }
/*------------------------------------------------- mame_fopen_ram - open a "file" which is actually just an array of data in RAM -------------------------------------------------*/
open a "file" which is actually just an array of data in RAM
[ "open", "a", "\"", "file", "\"", "which", "is", "actually", "just", "an", "array", "of", "data", "in", "RAM" ]
file_error mame_fopen_ram(const void *data, UINT32 length, UINT32 openflags, mame_file **file) { file_error filerr; *file = global_alloc_clear(mame_file); (*file)->openflags = openflags; #ifdef DEBUG_COOKIE (*file)->debug_cookie = DEBUG_COOKIE; #endif filerr = core_fopen_ram(data, length, openflags, &(*file)->file); if (filerr == FILERR_NONE) goto error; error: if (filerr != FILERR_NONE) { mame_fclose(*file); *file = NULL; } return filerr; }
[ "file_error", "mame_fopen_ram", "(", "const", "void", "*", "data", ",", "UINT32", "length", ",", "UINT32", "openflags", ",", "mame_file", "*", "*", "file", ")", "{", "file_error", "filerr", ";", "*", "file", "=", "global_alloc_clear", "(", "mame_file", ")", ";", "(", "*", "file", ")", "->", "openflags", "=", "openflags", ";", "#ifdef", "DEBUG_COOKIE", "(", "*", "file", ")", "->", "debug_cookie", "=", "DEBUG_COOKIE", ";", "#endif", "filerr", "=", "core_fopen_ram", "(", "data", ",", "length", ",", "openflags", ",", "&", "(", "*", "file", ")", "->", "file", ")", ";", "if", "(", "filerr", "==", "FILERR_NONE", ")", "goto", "error", ";", "error", ":", "if", "(", "filerr", "!=", "FILERR_NONE", ")", "{", "mame_fclose", "(", "*", "file", ")", ";", "*", "file", "=", "NULL", ";", "}", "return", "filerr", ";", "}" ]
mame_fopen_ram - open a "file" which is actually just an array of data in RAM
[ "mame_fopen_ram", "-", "open", "a", "\"", "file", "\"", "which", "is", "actually", "just", "an", "array", "of", "data", "in", "RAM" ]
[ "/* allocate the file itself */", "/* reset the file handle */", "/* attempt to open the file directly */", "/* handle errors and return */" ]
[ { "param": "data", "type": "void" }, { "param": "length", "type": "UINT32" }, { "param": "openflags", "type": "UINT32" }, { "param": "file", "type": "mame_file" } ]
{ "returns": [], "raises": [], "params": [ { "identifier": "data", "type": "void", "docstring": null, "docstring_tokens": [], "default": null, "is_optional": null }, { "identifier": "length", "type": "UINT32", "docstring": null, "docstring_tokens": [], "default": null, "is_optional": null }, { "identifier": "openflags", "type": "UINT32", "docstring": null, "docstring_tokens": [], "default": null, "is_optional": null }, { "identifier": "file", "type": "mame_file", "docstring": null, "docstring_tokens": [], "default": null, "is_optional": null } ], "outlier_params": [], "others": [] }
a460bd2445830158d2feca1fcf3c6320d7e6f1e0
lofunz/mieme
Reloaded/trunk/src/emu/fileio.c
[ "Unlicense" ]
C
mame_fclose_and_open_next
file_error
file_error mame_fclose_and_open_next(mame_file **file, const char *filename, UINT32 openflags) { path_iterator iterator = (*file)->iterator; mame_fclose(*file); *file = NULL; return fopen_internal(mame_options(), &iterator, filename, 0, openflags, file); }
/*------------------------------------------------- mame_fclose_and_open_next - close an open file, and open the next entry in the original searchpath -------------------------------------------------*/
close an open file, and open the next entry in the original searchpath
[ "close", "an", "open", "file", "and", "open", "the", "next", "entry", "in", "the", "original", "searchpath" ]
file_error mame_fclose_and_open_next(mame_file **file, const char *filename, UINT32 openflags) { path_iterator iterator = (*file)->iterator; mame_fclose(*file); *file = NULL; return fopen_internal(mame_options(), &iterator, filename, 0, openflags, file); }
[ "file_error", "mame_fclose_and_open_next", "(", "mame_file", "*", "*", "file", ",", "const", "char", "*", "filename", ",", "UINT32", "openflags", ")", "{", "path_iterator", "iterator", "=", "(", "*", "file", ")", "->", "iterator", ";", "mame_fclose", "(", "*", "file", ")", ";", "*", "file", "=", "NULL", ";", "return", "fopen_internal", "(", "mame_options", "(", ")", ",", "&", "iterator", ",", "filename", ",", "0", ",", "openflags", ",", "file", ")", ";", "}" ]
mame_fclose_and_open_next - close an open file, and open the next entry in the original searchpath
[ "mame_fclose_and_open_next", "-", "close", "an", "open", "file", "and", "open", "the", "next", "entry", "in", "the", "original", "searchpath" ]
[]
[ { "param": "file", "type": "mame_file" }, { "param": "filename", "type": "char" }, { "param": "openflags", "type": "UINT32" } ]
{ "returns": [], "raises": [], "params": [ { "identifier": "file", "type": "mame_file", "docstring": null, "docstring_tokens": [], "default": null, "is_optional": null }, { "identifier": "filename", "type": "char", "docstring": null, "docstring_tokens": [], "default": null, "is_optional": null }, { "identifier": "openflags", "type": "UINT32", "docstring": null, "docstring_tokens": [], "default": null, "is_optional": null } ], "outlier_params": [], "others": [] }
a460bd2445830158d2feca1fcf3c6320d7e6f1e0
lofunz/mieme
Reloaded/trunk/src/emu/fileio.c
[ "Unlicense" ]
C
mame_feof
int
int mame_feof(mame_file *file) { /* load the ZIP file now if we haven't yet */ if (file->zipfile != NULL) { if (load_zipped_file(file) != FILERR_NONE) return 0; } /* return EOF if we can */ if (file->file != NULL) return core_feof(file->file); return 0; }
/*------------------------------------------------- mame_feof - return 1 if we're at the end of file -------------------------------------------------*/
return 1 if we're at the end of file
[ "return", "1", "if", "we", "'", "re", "at", "the", "end", "of", "file" ]
int mame_feof(mame_file *file) { if (file->zipfile != NULL) { if (load_zipped_file(file) != FILERR_NONE) return 0; } if (file->file != NULL) return core_feof(file->file); return 0; }
[ "int", "mame_feof", "(", "mame_file", "*", "file", ")", "{", "if", "(", "file", "->", "zipfile", "!=", "NULL", ")", "{", "if", "(", "load_zipped_file", "(", "file", ")", "!=", "FILERR_NONE", ")", "return", "0", ";", "}", "if", "(", "file", "->", "file", "!=", "NULL", ")", "return", "core_feof", "(", "file", "->", "file", ")", ";", "return", "0", ";", "}" ]
mame_feof - return 1 if we're at the end of file
[ "mame_feof", "-", "return", "1", "if", "we", "'", "re", "at", "the", "end", "of", "file" ]
[ "/* load the ZIP file now if we haven't yet */", "/* return EOF if we can */" ]
[ { "param": "file", "type": "mame_file" } ]
{ "returns": [], "raises": [], "params": [ { "identifier": "file", "type": "mame_file", "docstring": null, "docstring_tokens": [], "default": null, "is_optional": null } ], "outlier_params": [], "others": [] }
a460bd2445830158d2feca1fcf3c6320d7e6f1e0
lofunz/mieme
Reloaded/trunk/src/emu/fileio.c
[ "Unlicense" ]
C
mame_fsize
UINT64
UINT64 mame_fsize(mame_file *file) { /* use the ZIP length if present */ if (file->zipfile != NULL) return file->ziplength; /* return length if we can */ if (file->file != NULL) return core_fsize(file->file); return 0; }
/*------------------------------------------------- mame_fsize - returns the size of a file -------------------------------------------------*/
returns the size of a file
[ "returns", "the", "size", "of", "a", "file" ]
UINT64 mame_fsize(mame_file *file) { if (file->zipfile != NULL) return file->ziplength; if (file->file != NULL) return core_fsize(file->file); return 0; }
[ "UINT64", "mame_fsize", "(", "mame_file", "*", "file", ")", "{", "if", "(", "file", "->", "zipfile", "!=", "NULL", ")", "return", "file", "->", "ziplength", ";", "if", "(", "file", "->", "file", "!=", "NULL", ")", "return", "core_fsize", "(", "file", "->", "file", ")", ";", "return", "0", ";", "}" ]
mame_fsize - returns the size of a file
[ "mame_fsize", "-", "returns", "the", "size", "of", "a", "file" ]
[ "/* use the ZIP length if present */", "/* return length if we can */" ]
[ { "param": "file", "type": "mame_file" } ]
{ "returns": [], "raises": [], "params": [ { "identifier": "file", "type": "mame_file", "docstring": null, "docstring_tokens": [], "default": null, "is_optional": null } ], "outlier_params": [], "others": [] }
a460bd2445830158d2feca1fcf3c6320d7e6f1e0
lofunz/mieme
Reloaded/trunk/src/emu/fileio.c
[ "Unlicense" ]
C
mame_fgetc
int
int mame_fgetc(mame_file *file) { /* load the ZIP file now if we haven't yet */ if (file->zipfile != NULL) { if (load_zipped_file(file) != FILERR_NONE) return EOF; } /* read the data if we can */ if (file->file != NULL) return core_fgetc(file->file); return EOF; }
/*------------------------------------------------- mame_fgetc - read a character from a file -------------------------------------------------*/
read a character from a file
[ "read", "a", "character", "from", "a", "file" ]
int mame_fgetc(mame_file *file) { if (file->zipfile != NULL) { if (load_zipped_file(file) != FILERR_NONE) return EOF; } if (file->file != NULL) return core_fgetc(file->file); return EOF; }
[ "int", "mame_fgetc", "(", "mame_file", "*", "file", ")", "{", "if", "(", "file", "->", "zipfile", "!=", "NULL", ")", "{", "if", "(", "load_zipped_file", "(", "file", ")", "!=", "FILERR_NONE", ")", "return", "EOF", ";", "}", "if", "(", "file", "->", "file", "!=", "NULL", ")", "return", "core_fgetc", "(", "file", "->", "file", ")", ";", "return", "EOF", ";", "}" ]
mame_fgetc - read a character from a file
[ "mame_fgetc", "-", "read", "a", "character", "from", "a", "file" ]
[ "/* load the ZIP file now if we haven't yet */", "/* read the data if we can */" ]
[ { "param": "file", "type": "mame_file" } ]
{ "returns": [], "raises": [], "params": [ { "identifier": "file", "type": "mame_file", "docstring": null, "docstring_tokens": [], "default": null, "is_optional": null } ], "outlier_params": [], "others": [] }
a460bd2445830158d2feca1fcf3c6320d7e6f1e0
lofunz/mieme
Reloaded/trunk/src/emu/fileio.c
[ "Unlicense" ]
C
mame_ungetc
int
int mame_ungetc(int c, mame_file *file) { /* load the ZIP file now if we haven't yet */ if (file->zipfile != NULL) { if (load_zipped_file(file) != FILERR_NONE) return 1; } /* read the data if we can */ if (file->file != NULL) return core_ungetc(c, file->file); return 1; }
/*------------------------------------------------- mame_ungetc - put back a character read from a file -------------------------------------------------*/
put back a character read from a file
[ "put", "back", "a", "character", "read", "from", "a", "file" ]
int mame_ungetc(int c, mame_file *file) { if (file->zipfile != NULL) { if (load_zipped_file(file) != FILERR_NONE) return 1; } if (file->file != NULL) return core_ungetc(c, file->file); return 1; }
[ "int", "mame_ungetc", "(", "int", "c", ",", "mame_file", "*", "file", ")", "{", "if", "(", "file", "->", "zipfile", "!=", "NULL", ")", "{", "if", "(", "load_zipped_file", "(", "file", ")", "!=", "FILERR_NONE", ")", "return", "1", ";", "}", "if", "(", "file", "->", "file", "!=", "NULL", ")", "return", "core_ungetc", "(", "c", ",", "file", "->", "file", ")", ";", "return", "1", ";", "}" ]
mame_ungetc - put back a character read from a file
[ "mame_ungetc", "-", "put", "back", "a", "character", "read", "from", "a", "file" ]
[ "/* load the ZIP file now if we haven't yet */", "/* read the data if we can */" ]
[ { "param": "c", "type": "int" }, { "param": "file", "type": "mame_file" } ]
{ "returns": [], "raises": [], "params": [ { "identifier": "c", "type": "int", "docstring": null, "docstring_tokens": [], "default": null, "is_optional": null }, { "identifier": "file", "type": "mame_file", "docstring": null, "docstring_tokens": [], "default": null, "is_optional": null } ], "outlier_params": [], "others": [] }
a460bd2445830158d2feca1fcf3c6320d7e6f1e0
lofunz/mieme
Reloaded/trunk/src/emu/fileio.c
[ "Unlicense" ]
C
mame_fgets
char
char *mame_fgets(char *s, int n, mame_file *file) { /* load the ZIP file now if we haven't yet */ if (file->zipfile != NULL) { if (load_zipped_file(file) != FILERR_NONE) return NULL; } /* read the data if we can */ if (file->file != NULL) return core_fgets(s, n, file->file); return NULL; }
/*------------------------------------------------- mame_fgets - read a line from a text file -------------------------------------------------*/
read a line from a text file
[ "read", "a", "line", "from", "a", "text", "file" ]
char *mame_fgets(char *s, int n, mame_file *file) { if (file->zipfile != NULL) { if (load_zipped_file(file) != FILERR_NONE) return NULL; } if (file->file != NULL) return core_fgets(s, n, file->file); return NULL; }
[ "char", "*", "mame_fgets", "(", "char", "*", "s", ",", "int", "n", ",", "mame_file", "*", "file", ")", "{", "if", "(", "file", "->", "zipfile", "!=", "NULL", ")", "{", "if", "(", "load_zipped_file", "(", "file", ")", "!=", "FILERR_NONE", ")", "return", "NULL", ";", "}", "if", "(", "file", "->", "file", "!=", "NULL", ")", "return", "core_fgets", "(", "s", ",", "n", ",", "file", "->", "file", ")", ";", "return", "NULL", ";", "}" ]
mame_fgets - read a line from a text file
[ "mame_fgets", "-", "read", "a", "line", "from", "a", "text", "file" ]
[ "/* load the ZIP file now if we haven't yet */", "/* read the data if we can */" ]
[ { "param": "s", "type": "char" }, { "param": "n", "type": "int" }, { "param": "file", "type": "mame_file" } ]
{ "returns": [], "raises": [], "params": [ { "identifier": "s", "type": "char", "docstring": null, "docstring_tokens": [], "default": null, "is_optional": null }, { "identifier": "n", "type": "int", "docstring": null, "docstring_tokens": [], "default": null, "is_optional": null }, { "identifier": "file", "type": "mame_file", "docstring": null, "docstring_tokens": [], "default": null, "is_optional": null } ], "outlier_params": [], "others": [] }
a460bd2445830158d2feca1fcf3c6320d7e6f1e0
lofunz/mieme
Reloaded/trunk/src/emu/fileio.c
[ "Unlicense" ]
C
mame_fputs
int
int mame_fputs(mame_file *file, const char *s) { /* write the data if we can */ if (file->file != NULL) return core_fputs(file->file, s); return 0; }
/*------------------------------------------------- mame_fputs - write a line to a text file -------------------------------------------------*/
write a line to a text file
[ "write", "a", "line", "to", "a", "text", "file" ]
int mame_fputs(mame_file *file, const char *s) { if (file->file != NULL) return core_fputs(file->file, s); return 0; }
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mame_fputs - write a line to a text file
[ "mame_fputs", "-", "write", "a", "line", "to", "a", "text", "file" ]
[ "/* write the data if we can */" ]
[ { "param": "file", "type": "mame_file" }, { "param": "s", "type": "char" } ]
{ "returns": [], "raises": [], "params": [ { "identifier": "file", "type": "mame_file", "docstring": null, "docstring_tokens": [], "default": null, "is_optional": null }, { "identifier": "s", "type": "char", "docstring": null, "docstring_tokens": [], "default": null, "is_optional": null } ], "outlier_params": [], "others": [] }
a460bd2445830158d2feca1fcf3c6320d7e6f1e0
lofunz/mieme
Reloaded/trunk/src/emu/fileio.c
[ "Unlicense" ]
C
mame_openpath
mame_path
mame_path *mame_openpath(core_options *opts, const char *searchpath) { mame_path *path; /* allocate a new mame_path */ path = global_alloc_clear(mame_path); /* initialize the iterator */ path_iterator_init(&path->iterator, opts, searchpath); return path; }
/*------------------------------------------------- mame_openpath - open a search path (multiple directories) for iteration -------------------------------------------------*/
open a search path (multiple directories) for iteration
[ "open", "a", "search", "path", "(", "multiple", "directories", ")", "for", "iteration" ]
mame_path *mame_openpath(core_options *opts, const char *searchpath) { mame_path *path; path = global_alloc_clear(mame_path); path_iterator_init(&path->iterator, opts, searchpath); return path; }
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mame_openpath - open a search path (multiple directories) for iteration
[ "mame_openpath", "-", "open", "a", "search", "path", "(", "multiple", "directories", ")", "for", "iteration" ]
[ "/* allocate a new mame_path */", "/* initialize the iterator */" ]
[ { "param": "opts", "type": "core_options" }, { "param": "searchpath", "type": "char" } ]
{ "returns": [], "raises": [], "params": [ { "identifier": "opts", "type": "core_options", "docstring": null, "docstring_tokens": [], "default": null, "is_optional": null }, { "identifier": "searchpath", "type": "char", "docstring": null, "docstring_tokens": [], "default": null, "is_optional": null } ], "outlier_params": [], "others": [] }
a460bd2445830158d2feca1fcf3c6320d7e6f1e0
lofunz/mieme
Reloaded/trunk/src/emu/fileio.c
[ "Unlicense" ]
C
mame_readpath
osd_directory_entry
const osd_directory_entry *mame_readpath(mame_path *path) { const osd_directory_entry *result; /* loop over potentially empty directories */ while (1) { /* if no open directory, get the next path */ while (path->curdir == NULL) { /* if we fail to get anything more, we're done */ if (!path_iterator_get_next(&path->iterator, path->pathbuffer)) return NULL; /* open the path */ path->curdir = osd_opendir(path->pathbuffer); } /* get the next entry from the current directory */ result = osd_readdir(path->curdir); if (result != NULL) return result; /* we're done; close this directory */ osd_closedir(path->curdir); path->curdir = NULL; } }
/*------------------------------------------------- mame_readpath - return information about the next file in the search path -------------------------------------------------*/
return information about the next file in the search path
[ "return", "information", "about", "the", "next", "file", "in", "the", "search", "path" ]
const osd_directory_entry *mame_readpath(mame_path *path) { const osd_directory_entry *result; while (1) { while (path->curdir == NULL) { if (!path_iterator_get_next(&path->iterator, path->pathbuffer)) return NULL; path->curdir = osd_opendir(path->pathbuffer); } result = osd_readdir(path->curdir); if (result != NULL) return result; osd_closedir(path->curdir); path->curdir = NULL; } }
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mame_readpath - return information about the next file in the search path
[ "mame_readpath", "-", "return", "information", "about", "the", "next", "file", "in", "the", "search", "path" ]
[ "/* loop over potentially empty directories */", "/* if no open directory, get the next path */", "/* if we fail to get anything more, we're done */", "/* open the path */", "/* get the next entry from the current directory */", "/* we're done; close this directory */" ]
[ { "param": "path", "type": "mame_path" } ]
{ "returns": [], "raises": [], "params": [ { "identifier": "path", "type": "mame_path", "docstring": null, "docstring_tokens": [], "default": null, "is_optional": null } ], "outlier_params": [], "others": [] }
a460bd2445830158d2feca1fcf3c6320d7e6f1e0
lofunz/mieme
Reloaded/trunk/src/emu/fileio.c
[ "Unlicense" ]
C
mame_fhash
char
const char *mame_fhash(mame_file *file, UINT32 functions) { const UINT8 *filedata; UINT32 wehave; /* if we already have the functions we need, just return */ wehave = hash_data_used_functions(file->hash); if ((wehave & functions) == functions) return file->hash; /* load the ZIP file now if we haven't yet */ if (file->zipfile != NULL) { if (load_zipped_file(file) != FILERR_NONE) return file->hash; } if (file->file == NULL) return file->hash; /* read the data if we can */ filedata = (const UINT8 *)core_fbuffer(file->file); if (filedata == NULL) return file->hash; /* compute the hash */ hash_compute(file->hash, filedata, core_fsize(file->file), wehave | functions); return file->hash; }
/*------------------------------------------------- mame_fhash - returns the hash for a file -------------------------------------------------*/
returns the hash for a file
[ "returns", "the", "hash", "for", "a", "file" ]
const char *mame_fhash(mame_file *file, UINT32 functions) { const UINT8 *filedata; UINT32 wehave; wehave = hash_data_used_functions(file->hash); if ((wehave & functions) == functions) return file->hash; if (file->zipfile != NULL) { if (load_zipped_file(file) != FILERR_NONE) return file->hash; } if (file->file == NULL) return file->hash; filedata = (const UINT8 *)core_fbuffer(file->file); if (filedata == NULL) return file->hash; hash_compute(file->hash, filedata, core_fsize(file->file), wehave | functions); return file->hash; }
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mame_fhash - returns the hash for a file
[ "mame_fhash", "-", "returns", "the", "hash", "for", "a", "file" ]
[ "/* if we already have the functions we need, just return */", "/* load the ZIP file now if we haven't yet */", "/* read the data if we can */", "/* compute the hash */" ]
[ { "param": "file", "type": "mame_file" }, { "param": "functions", "type": "UINT32" } ]
{ "returns": [], "raises": [], "params": [ { "identifier": "file", "type": "mame_file", "docstring": null, "docstring_tokens": [], "default": null, "is_optional": null }, { "identifier": "functions", "type": "UINT32", "docstring": null, "docstring_tokens": [], "default": null, "is_optional": null } ], "outlier_params": [], "others": [] }
a460bd2445830158d2feca1fcf3c6320d7e6f1e0
lofunz/mieme
Reloaded/trunk/src/emu/fileio.c
[ "Unlicense" ]
C
path_iterator_init
void
static void path_iterator_init(path_iterator *iterator, core_options *opts, const char *searchpath) { /* reset the structure */ iterator->base = (searchpath != NULL && !osd_is_absolute_path(searchpath)) ? options_get_string(opts, searchpath) : ""; iterator->cur = iterator->base; iterator->index = 0; }
/*------------------------------------------------- path_iterator_init - prepare to iterate over a given path type -------------------------------------------------*/
prepare to iterate over a given path type
[ "prepare", "to", "iterate", "over", "a", "given", "path", "type" ]
static void path_iterator_init(path_iterator *iterator, core_options *opts, const char *searchpath) { iterator->base = (searchpath != NULL && !osd_is_absolute_path(searchpath)) ? options_get_string(opts, searchpath) : ""; iterator->cur = iterator->base; iterator->index = 0; }
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path_iterator_init - prepare to iterate over a given path type
[ "path_iterator_init", "-", "prepare", "to", "iterate", "over", "a", "given", "path", "type" ]
[ "/* reset the structure */" ]
[ { "param": "iterator", "type": "path_iterator" }, { "param": "opts", "type": "core_options" }, { "param": "searchpath", "type": "char" } ]
{ "returns": [], "raises": [], "params": [ { "identifier": "iterator", "type": "path_iterator", "docstring": null, "docstring_tokens": [], "default": null, "is_optional": null }, { "identifier": "opts", "type": "core_options", "docstring": null, "docstring_tokens": [], "default": null, "is_optional": null }, { "identifier": "searchpath", "type": "char", "docstring": null, "docstring_tokens": [], "default": null, "is_optional": null } ], "outlier_params": [], "others": [] }
a460bd2445830158d2feca1fcf3c6320d7e6f1e0
lofunz/mieme
Reloaded/trunk/src/emu/fileio.c
[ "Unlicense" ]
C
zip_header_is_path
int
static int zip_header_is_path(const zip_file_header *header) { const char *zipfile = header->filename + header->filename_length - 1; return (zipfile >= header->filename && zipfile[0] == '/'); }
/*------------------------------------------------- zip_header_is_path - check whether filename in header is a path -------------------------------------------------*/
check whether filename in header is a path
[ "check", "whether", "filename", "in", "header", "is", "a", "path" ]
static int zip_header_is_path(const zip_file_header *header) { const char *zipfile = header->filename + header->filename_length - 1; return (zipfile >= header->filename && zipfile[0] == '/'); }
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zip_header_is_path - check whether filename in header is a path
[ "zip_header_is_path", "-", "check", "whether", "filename", "in", "header", "is", "a", "path" ]
[]
[ { "param": "header", "type": "zip_file_header" } ]
{ "returns": [], "raises": [], "params": [ { "identifier": "header", "type": "zip_file_header", "docstring": null, "docstring_tokens": [], "default": null, "is_optional": null } ], "outlier_params": [], "others": [] }
d28abcb4873735de606609ca20806168fad378b2
lofunz/mieme
Reloaded/tags/MAME4droid.Reloaded.1.0.WIP/src/mame/machine/nitedrvr.c
[ "Unlicense" ]
C
nitedrvr_steering
int
static int nitedrvr_steering(running_machine *machine) { int this_val; int delta; this_val = input_port_read(machine, "STEER"); delta=this_val-last_steering_val; last_steering_val=this_val; if (delta>128) delta-=256; else if (delta<-128) delta+=256; /* Divide by four to make our steering less sensitive */ nitedrvr_steering_buf+=(delta/4); if (nitedrvr_steering_buf>0) { nitedrvr_steering_buf--; nitedrvr_steering_val=0xC0; } else if (nitedrvr_steering_buf<0) { nitedrvr_steering_buf++; nitedrvr_steering_val=0x80; } else { nitedrvr_steering_val=0x00; } return nitedrvr_steering_val; }
/*************************************************************************** Steering When D7 is high, the steering wheel has moved. If D6 is low, it moved left. If D6 is high, it moved right. Be sure to keep returning a direction until steering_reset is called, because D6 and D7 are apparently checked at different times, and a change in-between can affect the direction you move. ***************************************************************************/
Steering When D7 is high, the steering wheel has moved. If D6 is low, it moved left. If D6 is high, it moved right. Be sure to keep returning a direction until steering_reset is called, because D6 and D7 are apparently checked at different times, and a change in-between can affect the direction you move.
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static int nitedrvr_steering(running_machine *machine) { int this_val; int delta; this_val = input_port_read(machine, "STEER"); delta=this_val-last_steering_val; last_steering_val=this_val; if (delta>128) delta-=256; else if (delta<-128) delta+=256; nitedrvr_steering_buf+=(delta/4); if (nitedrvr_steering_buf>0) { nitedrvr_steering_buf--; nitedrvr_steering_val=0xC0; } else if (nitedrvr_steering_buf<0) { nitedrvr_steering_buf++; nitedrvr_steering_val=0x80; } else { nitedrvr_steering_val=0x00; } return nitedrvr_steering_val; }
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Steering When D7 is high, the steering wheel has moved.
[ "Steering", "When", "D7", "is", "high", "the", "steering", "wheel", "has", "moved", "." ]
[ "/* Divide by four to make our steering less sensitive */" ]
[ { "param": "machine", "type": "running_machine" } ]
{ "returns": [], "raises": [], "params": [ { "identifier": "machine", "type": "running_machine", "docstring": null, "docstring_tokens": [], "default": null, "is_optional": null } ], "outlier_params": [], "others": [] }
8763e287951c407860681796b2c2d5fc8159f258
lofunz/mieme
Reloaded/trunk/src/emu/cpu/dsp56k/dsp56ops.c
[ "Unlicense" ]
C
execute_dual_x_memory_data_read
void
static void execute_dual_x_memory_data_read(dsp56k_core* cpustate, const UINT16 op, typed_pointer* d_register) { typed_pointer tempV; UINT16 srcVal1 = 0x0000; UINT16 srcVal2 = 0x0000; typed_pointer R = {NULL, DT_BYTE}; typed_pointer D1 = {NULL, DT_BYTE}; typed_pointer D2 = {NULL, DT_BYTE}; decode_RR_table(cpustate, BITS(op,0x0060), &R); decode_KKK_table(cpustate, BITS(op,0x0700), &D1, &D2, d_register->addr); /* Can't do an R3 for S1 */ if (R.addr == &R3) fatalerror("Dsp56k: Error. Dual x memory data read specified R3 as its first source!"); /* The note on A-142 is very interesting. You can effectively access external memory in the last 64 bytes of X data memory! */ if (*((UINT16*)D2.addr) >= 0xffc0) fatalerror("Dsp56k: Unimplemented access to external X Data Memory >= 0xffc0 in Dual X Memory Data Read."); /* First memmove */ srcVal1 = memory_read_word_16le(cpustate->data, ADDRESS(*((UINT16*)R.addr))); tempV.addr = &srcVal1; tempV.data_type = DT_WORD; SetDestinationValue(tempV, D1); /* Second memmove */ srcVal2 = memory_read_word_16le(cpustate->data, ADDRESS(R3)); tempV.addr = &srcVal2; tempV.data_type = DT_WORD; SetDestinationValue(tempV, D2); /* Touch up the R regs after all the moves */ execute_mm_table(cpustate, BITS(op,0x0060), BITS(op,0x1800)); }
/* Dual X Memory Data Read : 011m mKKK .rr. .... : A-142*/
Dual X Memory Data Read : 011m mKKK .rr.
[ "Dual", "X", "Memory", "Data", "Read", ":", "011m", "mKKK", ".", "rr", "." ]
static void execute_dual_x_memory_data_read(dsp56k_core* cpustate, const UINT16 op, typed_pointer* d_register) { typed_pointer tempV; UINT16 srcVal1 = 0x0000; UINT16 srcVal2 = 0x0000; typed_pointer R = {NULL, DT_BYTE}; typed_pointer D1 = {NULL, DT_BYTE}; typed_pointer D2 = {NULL, DT_BYTE}; decode_RR_table(cpustate, BITS(op,0x0060), &R); decode_KKK_table(cpustate, BITS(op,0x0700), &D1, &D2, d_register->addr); if (R.addr == &R3) fatalerror("Dsp56k: Error. Dual x memory data read specified R3 as its first source!"); if (*((UINT16*)D2.addr) >= 0xffc0) fatalerror("Dsp56k: Unimplemented access to external X Data Memory >= 0xffc0 in Dual X Memory Data Read."); srcVal1 = memory_read_word_16le(cpustate->data, ADDRESS(*((UINT16*)R.addr))); tempV.addr = &srcVal1; tempV.data_type = DT_WORD; SetDestinationValue(tempV, D1); srcVal2 = memory_read_word_16le(cpustate->data, ADDRESS(R3)); tempV.addr = &srcVal2; tempV.data_type = DT_WORD; SetDestinationValue(tempV, D2); execute_mm_table(cpustate, BITS(op,0x0060), BITS(op,0x1800)); }
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Dual X Memory Data Read : 011m mKKK .rr.
[ "Dual", "X", "Memory", "Data", "Read", ":", "011m", "mKKK", ".", "rr", "." ]
[ "/* Can't do an R3 for S1 */", "/* The note on A-142 is very interesting.\r\n You can effectively access external memory in the last 64 bytes of X data memory! */", "/* First memmove */", "/* Second memmove */", "/* Touch up the R regs after all the moves */" ]
[ { "param": "cpustate", "type": "dsp56k_core" }, { "param": "op", "type": "UINT16" }, { "param": "d_register", "type": "typed_pointer" } ]
{ "returns": [], "raises": [], "params": [ { "identifier": "cpustate", "type": "dsp56k_core", "docstring": null, "docstring_tokens": [], "default": null, "is_optional": null }, { "identifier": "op", "type": "UINT16", "docstring": null, "docstring_tokens": [], "default": null, "is_optional": null }, { "identifier": "d_register", "type": "typed_pointer", "docstring": null, "docstring_tokens": [], "default": null, "is_optional": null } ], "outlier_params": [], "others": [] }
de1516c83d91cc3a04aa5401f52c2a975d90a0d4
lofunz/mieme
Reloaded/tags/MAME4droid.Reloaded.1.0.WIP/src/lib/util/chd.c
[ "Unlicense" ]
C
chd_open_file
chd_error
chd_error chd_open_file(core_file *file, int mode, chd_file *parent, chd_file **chd) { chd_file *newchd = NULL; chd_error err; int intfnum; /* verify parameters */ if (file == NULL) EARLY_EXIT(err = CHDERR_INVALID_PARAMETER); /* punt if invalid parent */ if (parent != NULL && parent->cookie != COOKIE_VALUE) EARLY_EXIT(err = CHDERR_INVALID_PARAMETER); /* allocate memory for the final result */ newchd = (chd_file *)malloc(sizeof(**chd)); if (newchd == NULL) EARLY_EXIT(err = CHDERR_OUT_OF_MEMORY); memset(newchd, 0, sizeof(*newchd)); newchd->cookie = COOKIE_VALUE; newchd->parent = parent; newchd->file = file; /* now attempt to read the header */ err = header_read(newchd->file, &newchd->header); if (err != CHDERR_NONE) EARLY_EXIT(err); /* validate the header */ err = header_validate(&newchd->header); if (err != CHDERR_NONE) EARLY_EXIT(err); /* make sure we don't open a read-only file writeable */ if (mode == CHD_OPEN_READWRITE && !(newchd->header.flags & CHDFLAGS_IS_WRITEABLE)) EARLY_EXIT(err = CHDERR_FILE_NOT_WRITEABLE); /* also, never open an older version writeable */ if (mode == CHD_OPEN_READWRITE && newchd->header.version < CHD_HEADER_VERSION) EARLY_EXIT(err = CHDERR_UNSUPPORTED_VERSION); /* if we need a parent, make sure we have one */ if (parent == NULL && (newchd->header.flags & CHDFLAGS_HAS_PARENT)) EARLY_EXIT(err = CHDERR_REQUIRES_PARENT); /* make sure we have a valid parent */ if (parent != NULL) { /* check MD5 if it isn't empty */ if (memcmp(nullmd5, newchd->header.parentmd5, sizeof(newchd->header.parentmd5)) != 0 && memcmp(nullmd5, newchd->parent->header.md5, sizeof(newchd->parent->header.md5)) != 0 && memcmp(newchd->parent->header.md5, newchd->header.parentmd5, sizeof(newchd->header.parentmd5)) != 0) EARLY_EXIT(err = CHDERR_INVALID_PARENT); /* check SHA1 if it isn't empty */ if (memcmp(nullsha1, newchd->header.parentsha1, sizeof(newchd->header.parentsha1)) != 0 && memcmp(nullsha1, newchd->parent->header.sha1, sizeof(newchd->parent->header.sha1)) != 0 && memcmp(newchd->parent->header.sha1, newchd->header.parentsha1, sizeof(newchd->header.parentsha1)) != 0) EARLY_EXIT(err = CHDERR_INVALID_PARENT); } /* now read the hunk map */ err = map_read(newchd); if (err != CHDERR_NONE) EARLY_EXIT(err); /* allocate and init the hunk cache */ newchd->cache = (UINT8 *)malloc(newchd->header.hunkbytes); newchd->compare = (UINT8 *)malloc(newchd->header.hunkbytes); if (newchd->cache == NULL || newchd->compare == NULL) EARLY_EXIT(err = CHDERR_OUT_OF_MEMORY); newchd->cachehunk = ~0; newchd->comparehunk = ~0; /* allocate the temporary compressed buffer */ newchd->compressed = (UINT8 *)malloc(newchd->header.hunkbytes); if (newchd->compressed == NULL) EARLY_EXIT(err = CHDERR_OUT_OF_MEMORY); /* find the codec interface */ for (intfnum = 0; intfnum < ARRAY_LENGTH(codec_interfaces); intfnum++) if (codec_interfaces[intfnum].compression == newchd->header.compression) { newchd->codecintf = &codec_interfaces[intfnum]; break; } if (intfnum == ARRAY_LENGTH(codec_interfaces)) EARLY_EXIT(err = CHDERR_UNSUPPORTED_FORMAT); /* initialize the codec */ if (newchd->codecintf->init != NULL) err = (*newchd->codecintf->init)(newchd); if (err != CHDERR_NONE) EARLY_EXIT(err); /* all done */ *chd = newchd; return CHDERR_NONE; cleanup: if (newchd != NULL) chd_close(newchd); return err; }
/*------------------------------------------------- chd_open_file - open a CHD file for access -------------------------------------------------*/
open a CHD file for access
[ "open", "a", "CHD", "file", "for", "access" ]
chd_error chd_open_file(core_file *file, int mode, chd_file *parent, chd_file **chd) { chd_file *newchd = NULL; chd_error err; int intfnum; if (file == NULL) EARLY_EXIT(err = CHDERR_INVALID_PARAMETER); if (parent != NULL && parent->cookie != COOKIE_VALUE) EARLY_EXIT(err = CHDERR_INVALID_PARAMETER); newchd = (chd_file *)malloc(sizeof(**chd)); if (newchd == NULL) EARLY_EXIT(err = CHDERR_OUT_OF_MEMORY); memset(newchd, 0, sizeof(*newchd)); newchd->cookie = COOKIE_VALUE; newchd->parent = parent; newchd->file = file; err = header_read(newchd->file, &newchd->header); if (err != CHDERR_NONE) EARLY_EXIT(err); err = header_validate(&newchd->header); if (err != CHDERR_NONE) EARLY_EXIT(err); if (mode == CHD_OPEN_READWRITE && !(newchd->header.flags & CHDFLAGS_IS_WRITEABLE)) EARLY_EXIT(err = CHDERR_FILE_NOT_WRITEABLE); if (mode == CHD_OPEN_READWRITE && newchd->header.version < CHD_HEADER_VERSION) EARLY_EXIT(err = CHDERR_UNSUPPORTED_VERSION); if (parent == NULL && (newchd->header.flags & CHDFLAGS_HAS_PARENT)) EARLY_EXIT(err = CHDERR_REQUIRES_PARENT); if (parent != NULL) { if (memcmp(nullmd5, newchd->header.parentmd5, sizeof(newchd->header.parentmd5)) != 0 && memcmp(nullmd5, newchd->parent->header.md5, sizeof(newchd->parent->header.md5)) != 0 && memcmp(newchd->parent->header.md5, newchd->header.parentmd5, sizeof(newchd->header.parentmd5)) != 0) EARLY_EXIT(err = CHDERR_INVALID_PARENT); if (memcmp(nullsha1, newchd->header.parentsha1, sizeof(newchd->header.parentsha1)) != 0 && memcmp(nullsha1, newchd->parent->header.sha1, sizeof(newchd->parent->header.sha1)) != 0 && memcmp(newchd->parent->header.sha1, newchd->header.parentsha1, sizeof(newchd->header.parentsha1)) != 0) EARLY_EXIT(err = CHDERR_INVALID_PARENT); } err = map_read(newchd); if (err != CHDERR_NONE) EARLY_EXIT(err); newchd->cache = (UINT8 *)malloc(newchd->header.hunkbytes); newchd->compare = (UINT8 *)malloc(newchd->header.hunkbytes); if (newchd->cache == NULL || newchd->compare == NULL) EARLY_EXIT(err = CHDERR_OUT_OF_MEMORY); newchd->cachehunk = ~0; newchd->comparehunk = ~0; newchd->compressed = (UINT8 *)malloc(newchd->header.hunkbytes); if (newchd->compressed == NULL) EARLY_EXIT(err = CHDERR_OUT_OF_MEMORY); for (intfnum = 0; intfnum < ARRAY_LENGTH(codec_interfaces); intfnum++) if (codec_interfaces[intfnum].compression == newchd->header.compression) { newchd->codecintf = &codec_interfaces[intfnum]; break; } if (intfnum == ARRAY_LENGTH(codec_interfaces)) EARLY_EXIT(err = CHDERR_UNSUPPORTED_FORMAT); if (newchd->codecintf->init != NULL) err = (*newchd->codecintf->init)(newchd); if (err != CHDERR_NONE) EARLY_EXIT(err); *chd = newchd; return CHDERR_NONE; cleanup: if (newchd != NULL) chd_close(newchd); return err; }
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"!=", "NULL", ")", "chd_close", "(", "newchd", ")", ";", "return", "err", ";", "}" ]
chd_open_file - open a CHD file for access
[ "chd_open_file", "-", "open", "a", "CHD", "file", "for", "access" ]
[ "/* verify parameters */", "/* punt if invalid parent */", "/* allocate memory for the final result */", "/* now attempt to read the header */", "/* validate the header */", "/* make sure we don't open a read-only file writeable */", "/* also, never open an older version writeable */", "/* if we need a parent, make sure we have one */", "/* make sure we have a valid parent */", "/* check MD5 if it isn't empty */", "/* check SHA1 if it isn't empty */", "/* now read the hunk map */", "/* allocate and init the hunk cache */", "/* allocate the temporary compressed buffer */", "/* find the codec interface */", "/* initialize the codec */", "/* all done */" ]
[ { "param": "file", "type": "core_file" }, { "param": "mode", "type": "int" }, { "param": "parent", "type": "chd_file" }, { "param": "chd", "type": "chd_file" } ]
{ "returns": [], "raises": [], "params": [ { "identifier": "file", "type": "core_file", "docstring": null, "docstring_tokens": [], "default": null, "is_optional": null }, { "identifier": "mode", "type": "int", "docstring": null, "docstring_tokens": [], "default": null, "is_optional": null }, { "identifier": "parent", "type": "chd_file", "docstring": null, "docstring_tokens": [], "default": null, "is_optional": null }, { "identifier": "chd", "type": "chd_file", "docstring": null, "docstring_tokens": [], "default": null, "is_optional": null } ], "outlier_params": [], "others": [] }
de1516c83d91cc3a04aa5401f52c2a975d90a0d4
lofunz/mieme
Reloaded/tags/MAME4droid.Reloaded.1.0.WIP/src/lib/util/chd.c
[ "Unlicense" ]
C
chd_create
chd_error
chd_error chd_create(const char *filename, UINT64 logicalbytes, UINT32 hunkbytes, UINT32 compression, chd_file *parent) { core_file *file = NULL; file_error filerr; chd_error chderr; filerr = core_fopen(filename, OPEN_FLAG_READ | OPEN_FLAG_WRITE | OPEN_FLAG_CREATE, &file); if (filerr != FILERR_NONE) { chderr = CHDERR_FILE_NOT_FOUND; goto cleanup; } chderr = chd_create_file(file, logicalbytes, hunkbytes, compression, parent); if (chderr != CHDERR_NONE) goto cleanup; cleanup: if (file != NULL) core_fclose(file); return chderr; }
/*------------------------------------------------- chd_create - create a CHD file by filename -------------------------------------------------*/
create a CHD file by filename
[ "create", "a", "CHD", "file", "by", "filename" ]
chd_error chd_create(const char *filename, UINT64 logicalbytes, UINT32 hunkbytes, UINT32 compression, chd_file *parent) { core_file *file = NULL; file_error filerr; chd_error chderr; filerr = core_fopen(filename, OPEN_FLAG_READ | OPEN_FLAG_WRITE | OPEN_FLAG_CREATE, &file); if (filerr != FILERR_NONE) { chderr = CHDERR_FILE_NOT_FOUND; goto cleanup; } chderr = chd_create_file(file, logicalbytes, hunkbytes, compression, parent); if (chderr != CHDERR_NONE) goto cleanup; cleanup: if (file != NULL) core_fclose(file); return chderr; }
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chd_create - create a CHD file by filename
[ "chd_create", "-", "create", "a", "CHD", "file", "by", "filename" ]
[]
[ { "param": "filename", "type": "char" }, { "param": "logicalbytes", "type": "UINT64" }, { "param": "hunkbytes", "type": "UINT32" }, { "param": "compression", "type": "UINT32" }, { "param": "parent", "type": "chd_file" } ]
{ "returns": [], "raises": [], "params": [ { "identifier": "filename", "type": "char", "docstring": null, "docstring_tokens": [], "default": null, "is_optional": null }, { "identifier": "logicalbytes", "type": "UINT64", "docstring": null, "docstring_tokens": [], "default": null, "is_optional": null }, { "identifier": "hunkbytes", "type": "UINT32", "docstring": null, "docstring_tokens": [], "default": null, "is_optional": null }, { "identifier": "compression", "type": "UINT32", "docstring": null, "docstring_tokens": [], "default": null, "is_optional": null }, { "identifier": "parent", "type": "chd_file", "docstring": null, "docstring_tokens": [], "default": null, "is_optional": null } ], "outlier_params": [], "others": [] }
de1516c83d91cc3a04aa5401f52c2a975d90a0d4
lofunz/mieme
Reloaded/tags/MAME4droid.Reloaded.1.0.WIP/src/lib/util/chd.c
[ "Unlicense" ]
C
chd_open
chd_error
chd_error chd_open(const char *filename, int mode, chd_file *parent, chd_file **chd) { chd_error err; file_error filerr; core_file *file = NULL; UINT32 openflags; /* choose the proper mode */ switch(mode) { case CHD_OPEN_READ: openflags = OPEN_FLAG_READ; break; case CHD_OPEN_READWRITE: openflags = OPEN_FLAG_READ | OPEN_FLAG_WRITE; break; default: err = CHDERR_INVALID_PARAMETER; goto cleanup; } /* open the file */ filerr = core_fopen(filename, openflags, &file); if (filerr != FILERR_NONE) { err = CHDERR_FILE_NOT_FOUND; goto cleanup; } /* now open the CHD */ err = chd_open_file(file, mode, parent, chd); if (err != CHDERR_NONE) goto cleanup; /* we now own this file */ (*chd)->owns_file = TRUE; cleanup: if ((err != CHDERR_NONE) && (file != NULL)) core_fclose(file); return err; }
/*------------------------------------------------- chd_open - open a CHD file by filename -------------------------------------------------*/
open a CHD file by filename
[ "open", "a", "CHD", "file", "by", "filename" ]
chd_error chd_open(const char *filename, int mode, chd_file *parent, chd_file **chd) { chd_error err; file_error filerr; core_file *file = NULL; UINT32 openflags; switch(mode) { case CHD_OPEN_READ: openflags = OPEN_FLAG_READ; break; case CHD_OPEN_READWRITE: openflags = OPEN_FLAG_READ | OPEN_FLAG_WRITE; break; default: err = CHDERR_INVALID_PARAMETER; goto cleanup; } filerr = core_fopen(filename, openflags, &file); if (filerr != FILERR_NONE) { err = CHDERR_FILE_NOT_FOUND; goto cleanup; } err = chd_open_file(file, mode, parent, chd); if (err != CHDERR_NONE) goto cleanup; (*chd)->owns_file = TRUE; cleanup: if ((err != CHDERR_NONE) && (file != NULL)) core_fclose(file); return err; }
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chd_open - open a CHD file by filename
[ "chd_open", "-", "open", "a", "CHD", "file", "by", "filename" ]
[ "/* choose the proper mode */", "/* open the file */", "/* now open the CHD */", "/* we now own this file */" ]
[ { "param": "filename", "type": "char" }, { "param": "mode", "type": "int" }, { "param": "parent", "type": "chd_file" }, { "param": "chd", "type": "chd_file" } ]
{ "returns": [], "raises": [], "params": [ { "identifier": "filename", "type": "char", "docstring": null, "docstring_tokens": [], "default": null, "is_optional": null }, { "identifier": "mode", "type": "int", "docstring": null, "docstring_tokens": [], "default": null, "is_optional": null }, { "identifier": "parent", "type": "chd_file", "docstring": null, "docstring_tokens": [], "default": null, "is_optional": null }, { "identifier": "chd", "type": "chd_file", "docstring": null, "docstring_tokens": [], "default": null, "is_optional": null } ], "outlier_params": [], "others": [] }
de1516c83d91cc3a04aa5401f52c2a975d90a0d4
lofunz/mieme
Reloaded/tags/MAME4droid.Reloaded.1.0.WIP/src/lib/util/chd.c
[ "Unlicense" ]
C
chd_close
void
void chd_close(chd_file *chd) { /* punt if NULL or invalid */ if (chd == NULL || chd->cookie != COOKIE_VALUE) return; /* wait for any pending async operations */ wait_for_pending_async(chd); /* kill the work queue and any work item */ if (chd->workitem != NULL) osd_work_item_release(chd->workitem); if (chd->workqueue != NULL) osd_work_queue_free(chd->workqueue); /* deinit the codec */ if (chd->codecintf != NULL && chd->codecintf->free != NULL) (*chd->codecintf->free)(chd); /* free the compressed data buffer */ if (chd->compressed != NULL) free(chd->compressed); /* free the hunk cache and compare data */ if (chd->compare != NULL) free(chd->compare); if (chd->cache != NULL) free(chd->cache); /* free the hunk map */ if (chd->map != NULL) free(chd->map); /* free the CRC table */ if (chd->crctable != NULL) free(chd->crctable); /* free the CRC map */ if (chd->crcmap != NULL) free(chd->crcmap); /* close the file */ if (chd->owns_file && chd->file != NULL) core_fclose(chd->file); if (PRINTF_MAX_HUNK) printf("Max hunk = %d/%d\n", chd->maxhunk, chd->header.totalhunks); /* free our memory */ free(chd); }
/*------------------------------------------------- chd_close - close a CHD file for access -------------------------------------------------*/
close a CHD file for access
[ "close", "a", "CHD", "file", "for", "access" ]
void chd_close(chd_file *chd) { if (chd == NULL || chd->cookie != COOKIE_VALUE) return; wait_for_pending_async(chd); if (chd->workitem != NULL) osd_work_item_release(chd->workitem); if (chd->workqueue != NULL) osd_work_queue_free(chd->workqueue); if (chd->codecintf != NULL && chd->codecintf->free != NULL) (*chd->codecintf->free)(chd); if (chd->compressed != NULL) free(chd->compressed); if (chd->compare != NULL) free(chd->compare); if (chd->cache != NULL) free(chd->cache); if (chd->map != NULL) free(chd->map); if (chd->crctable != NULL) free(chd->crctable); if (chd->crcmap != NULL) free(chd->crcmap); if (chd->owns_file && chd->file != NULL) core_fclose(chd->file); if (PRINTF_MAX_HUNK) printf("Max hunk = %d/%d\n", chd->maxhunk, chd->header.totalhunks); free(chd); }
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chd_close - close a CHD file for access
[ "chd_close", "-", "close", "a", "CHD", "file", "for", "access" ]
[ "/* punt if NULL or invalid */", "/* wait for any pending async operations */", "/* kill the work queue and any work item */", "/* deinit the codec */", "/* free the compressed data buffer */", "/* free the hunk cache and compare data */", "/* free the hunk map */", "/* free the CRC table */", "/* free the CRC map */", "/* close the file */", "/* free our memory */" ]
[ { "param": "chd", "type": "chd_file" } ]
{ "returns": [], "raises": [], "params": [ { "identifier": "chd", "type": "chd_file", "docstring": null, "docstring_tokens": [], "default": null, "is_optional": null } ], "outlier_params": [], "others": [] }
de1516c83d91cc3a04aa5401f52c2a975d90a0d4
lofunz/mieme
Reloaded/tags/MAME4droid.Reloaded.1.0.WIP/src/lib/util/chd.c
[ "Unlicense" ]
C
chd_error_string
char
const char *chd_error_string(chd_error err) { switch (err) { case CHDERR_NONE: return "no error"; case CHDERR_NO_INTERFACE: return "no drive interface"; case CHDERR_OUT_OF_MEMORY: return "out of memory"; case CHDERR_INVALID_FILE: return "invalid file"; case CHDERR_INVALID_PARAMETER: return "invalid parameter"; case CHDERR_INVALID_DATA: return "invalid data"; case CHDERR_FILE_NOT_FOUND: return "file not found"; case CHDERR_REQUIRES_PARENT: return "requires parent"; case CHDERR_FILE_NOT_WRITEABLE: return "file not writeable"; case CHDERR_READ_ERROR: return "read error"; case CHDERR_WRITE_ERROR: return "write error"; case CHDERR_CODEC_ERROR: return "codec error"; case CHDERR_INVALID_PARENT: return "invalid parent"; case CHDERR_HUNK_OUT_OF_RANGE: return "hunk out of range"; case CHDERR_DECOMPRESSION_ERROR: return "decompression error"; case CHDERR_COMPRESSION_ERROR: return "compression error"; case CHDERR_CANT_CREATE_FILE: return "can't create file"; case CHDERR_CANT_VERIFY: return "can't verify file"; case CHDERR_NOT_SUPPORTED: return "operation not supported"; case CHDERR_METADATA_NOT_FOUND: return "can't find metadata"; case CHDERR_INVALID_METADATA_SIZE: return "invalid metadata size"; case CHDERR_UNSUPPORTED_VERSION: return "unsupported CHD version"; case CHDERR_VERIFY_INCOMPLETE: return "incomplete verify"; case CHDERR_INVALID_METADATA: return "invalid metadata"; case CHDERR_INVALID_STATE: return "invalid state"; case CHDERR_OPERATION_PENDING: return "operation pending"; case CHDERR_NO_ASYNC_OPERATION: return "no async operation in progress"; case CHDERR_UNSUPPORTED_FORMAT: return "unsupported format"; default: return "undocumented error"; } }
/*------------------------------------------------- chd_error_string - return an error string for the given CHD error -------------------------------------------------*/
return an error string for the given CHD error
[ "return", "an", "error", "string", "for", "the", "given", "CHD", "error" ]
const char *chd_error_string(chd_error err) { switch (err) { case CHDERR_NONE: return "no error"; case CHDERR_NO_INTERFACE: return "no drive interface"; case CHDERR_OUT_OF_MEMORY: return "out of memory"; case CHDERR_INVALID_FILE: return "invalid file"; case CHDERR_INVALID_PARAMETER: return "invalid parameter"; case CHDERR_INVALID_DATA: return "invalid data"; case CHDERR_FILE_NOT_FOUND: return "file not found"; case CHDERR_REQUIRES_PARENT: return "requires parent"; case CHDERR_FILE_NOT_WRITEABLE: return "file not writeable"; case CHDERR_READ_ERROR: return "read error"; case CHDERR_WRITE_ERROR: return "write error"; case CHDERR_CODEC_ERROR: return "codec error"; case CHDERR_INVALID_PARENT: return "invalid parent"; case CHDERR_HUNK_OUT_OF_RANGE: return "hunk out of range"; case CHDERR_DECOMPRESSION_ERROR: return "decompression error"; case CHDERR_COMPRESSION_ERROR: return "compression error"; case CHDERR_CANT_CREATE_FILE: return "can't create file"; case CHDERR_CANT_VERIFY: return "can't verify file"; case CHDERR_NOT_SUPPORTED: return "operation not supported"; case CHDERR_METADATA_NOT_FOUND: return "can't find metadata"; case CHDERR_INVALID_METADATA_SIZE: return "invalid metadata size"; case CHDERR_UNSUPPORTED_VERSION: return "unsupported CHD version"; case CHDERR_VERIFY_INCOMPLETE: return "incomplete verify"; case CHDERR_INVALID_METADATA: return "invalid metadata"; case CHDERR_INVALID_STATE: return "invalid state"; case CHDERR_OPERATION_PENDING: return "operation pending"; case CHDERR_NO_ASYNC_OPERATION: return "no async operation in progress"; case CHDERR_UNSUPPORTED_FORMAT: return "unsupported format"; default: return "undocumented error"; } }
[ "const", "char", "*", "chd_error_string", "(", "chd_error", "err", ")", "{", "switch", "(", "err", ")", "{", "case", "CHDERR_NONE", ":", "return", "\"", "\"", ";", "case", "CHDERR_NO_INTERFACE", ":", "return", "\"", "\"", ";", "case", "CHDERR_OUT_OF_MEMORY", ":", "return", "\"", "\"", ";", "case", "CHDERR_INVALID_FILE", ":", "return", "\"", "\"", ";", "case", "CHDERR_INVALID_PARAMETER", ":", "return", "\"", "\"", ";", "case", "CHDERR_INVALID_DATA", ":", "return", "\"", "\"", ";", "case", "CHDERR_FILE_NOT_FOUND", ":", "return", "\"", "\"", ";", "case", "CHDERR_REQUIRES_PARENT", ":", "return", "\"", "\"", ";", "case", "CHDERR_FILE_NOT_WRITEABLE", ":", "return", "\"", "\"", ";", "case", "CHDERR_READ_ERROR", ":", "return", "\"", "\"", ";", "case", "CHDERR_WRITE_ERROR", ":", "return", "\"", "\"", ";", "case", "CHDERR_CODEC_ERROR", ":", "return", "\"", "\"", ";", "case", "CHDERR_INVALID_PARENT", ":", "return", "\"", "\"", ";", "case", "CHDERR_HUNK_OUT_OF_RANGE", ":", "return", "\"", "\"", ";", "case", "CHDERR_DECOMPRESSION_ERROR", ":", "return", "\"", "\"", ";", "case", "CHDERR_COMPRESSION_ERROR", ":", "return", "\"", "\"", ";", "case", "CHDERR_CANT_CREATE_FILE", ":", "return", "\"", "\"", ";", "case", "CHDERR_CANT_VERIFY", ":", "return", "\"", "\"", ";", "case", "CHDERR_NOT_SUPPORTED", ":", "return", "\"", "\"", ";", "case", "CHDERR_METADATA_NOT_FOUND", ":", "return", "\"", "\"", ";", "case", "CHDERR_INVALID_METADATA_SIZE", ":", "return", "\"", "\"", ";", "case", "CHDERR_UNSUPPORTED_VERSION", ":", "return", "\"", "\"", ";", "case", "CHDERR_VERIFY_INCOMPLETE", ":", "return", "\"", "\"", ";", "case", "CHDERR_INVALID_METADATA", ":", "return", "\"", "\"", ";", "case", "CHDERR_INVALID_STATE", ":", "return", "\"", "\"", ";", "case", "CHDERR_OPERATION_PENDING", ":", "return", "\"", "\"", ";", "case", "CHDERR_NO_ASYNC_OPERATION", ":", "return", "\"", "\"", ";", "case", "CHDERR_UNSUPPORTED_FORMAT", ":", "return", "\"", "\"", ";", "default", ":", "return", "\"", "\"", ";", "}", "}" ]
chd_error_string - return an error string for the given CHD error
[ "chd_error_string", "-", "return", "an", "error", "string", "for", "the", "given", "CHD", "error" ]
[]
[ { "param": "err", "type": "chd_error" } ]
{ "returns": [], "raises": [], "params": [ { "identifier": "err", "type": "chd_error", "docstring": null, "docstring_tokens": [], "default": null, "is_optional": null } ], "outlier_params": [], "others": [] }
de1516c83d91cc3a04aa5401f52c2a975d90a0d4
lofunz/mieme
Reloaded/tags/MAME4droid.Reloaded.1.0.WIP/src/lib/util/chd.c
[ "Unlicense" ]
C
chd_get_header
chd_header
const chd_header *chd_get_header(chd_file *chd) { /* punt if NULL or invalid */ if (chd == NULL || chd->cookie != COOKIE_VALUE) return NULL; return &chd->header; }
/*------------------------------------------------- chd_get_header - return a pointer to the extracted header data -------------------------------------------------*/
return a pointer to the extracted header data
[ "return", "a", "pointer", "to", "the", "extracted", "header", "data" ]
const chd_header *chd_get_header(chd_file *chd) { if (chd == NULL || chd->cookie != COOKIE_VALUE) return NULL; return &chd->header; }
[ "const", "chd_header", "*", "chd_get_header", "(", "chd_file", "*", "chd", ")", "{", "if", "(", "chd", "==", "NULL", "||", "chd", "->", "cookie", "!=", "COOKIE_VALUE", ")", "return", "NULL", ";", "return", "&", "chd", "->", "header", ";", "}" ]
chd_get_header - return a pointer to the extracted header data
[ "chd_get_header", "-", "return", "a", "pointer", "to", "the", "extracted", "header", "data" ]
[ "/* punt if NULL or invalid */" ]
[ { "param": "chd", "type": "chd_file" } ]
{ "returns": [], "raises": [], "params": [ { "identifier": "chd", "type": "chd_file", "docstring": null, "docstring_tokens": [], "default": null, "is_optional": null } ], "outlier_params": [], "others": [] }
de1516c83d91cc3a04aa5401f52c2a975d90a0d4
lofunz/mieme
Reloaded/tags/MAME4droid.Reloaded.1.0.WIP/src/lib/util/chd.c
[ "Unlicense" ]
C
chd_set_header_file
chd_error
chd_error chd_set_header_file(core_file *file, const chd_header *header) { chd_header oldheader; chd_error err; /* validate the header */ err = header_validate(header); if (err != CHDERR_NONE) EARLY_EXIT(err); /* read the old header */ err = header_read(file, &oldheader); if (err != CHDERR_NONE) EARLY_EXIT(err); /* make sure we're only making valid changes */ if (header->length != oldheader.length) EARLY_EXIT(err = CHDERR_INVALID_PARAMETER); if (header->version != oldheader.version) EARLY_EXIT(err = CHDERR_INVALID_PARAMETER); if (header->compression != oldheader.compression) EARLY_EXIT(err = CHDERR_INVALID_PARAMETER); if (header->hunkbytes != oldheader.hunkbytes) EARLY_EXIT(err = CHDERR_INVALID_PARAMETER); if (header->totalhunks != oldheader.totalhunks) EARLY_EXIT(err = CHDERR_INVALID_PARAMETER); if (header->metaoffset != oldheader.metaoffset) EARLY_EXIT(err = CHDERR_INVALID_PARAMETER); if (header->obsolete_hunksize != oldheader.obsolete_hunksize) EARLY_EXIT(err = CHDERR_INVALID_PARAMETER); /* write the new header */ err = header_write(file, header); if (err != CHDERR_NONE) EARLY_EXIT(err); return CHDERR_NONE; cleanup: return err; }
/*------------------------------------------------- chd_set_header_file - write the current header to the file -------------------------------------------------*/
write the current header to the file
[ "write", "the", "current", "header", "to", "the", "file" ]
chd_error chd_set_header_file(core_file *file, const chd_header *header) { chd_header oldheader; chd_error err; err = header_validate(header); if (err != CHDERR_NONE) EARLY_EXIT(err); err = header_read(file, &oldheader); if (err != CHDERR_NONE) EARLY_EXIT(err); if (header->length != oldheader.length) EARLY_EXIT(err = CHDERR_INVALID_PARAMETER); if (header->version != oldheader.version) EARLY_EXIT(err = CHDERR_INVALID_PARAMETER); if (header->compression != oldheader.compression) EARLY_EXIT(err = CHDERR_INVALID_PARAMETER); if (header->hunkbytes != oldheader.hunkbytes) EARLY_EXIT(err = CHDERR_INVALID_PARAMETER); if (header->totalhunks != oldheader.totalhunks) EARLY_EXIT(err = CHDERR_INVALID_PARAMETER); if (header->metaoffset != oldheader.metaoffset) EARLY_EXIT(err = CHDERR_INVALID_PARAMETER); if (header->obsolete_hunksize != oldheader.obsolete_hunksize) EARLY_EXIT(err = CHDERR_INVALID_PARAMETER); err = header_write(file, header); if (err != CHDERR_NONE) EARLY_EXIT(err); return CHDERR_NONE; cleanup: return err; }
[ "chd_error", "chd_set_header_file", "(", "core_file", "*", "file", ",", "const", "chd_header", "*", "header", ")", "{", "chd_header", "oldheader", ";", "chd_error", "err", ";", "err", "=", "header_validate", "(", "header", ")", ";", "if", "(", "err", "!=", "CHDERR_NONE", ")", "EARLY_EXIT", "(", "err", ")", ";", "err", "=", "header_read", "(", "file", ",", "&", "oldheader", ")", ";", "if", "(", "err", "!=", "CHDERR_NONE", ")", "EARLY_EXIT", "(", "err", ")", ";", "if", "(", "header", "->", "length", "!=", "oldheader", ".", "length", ")", "EARLY_EXIT", "(", "err", "=", "CHDERR_INVALID_PARAMETER", ")", ";", "if", "(", "header", "->", "version", "!=", "oldheader", ".", "version", ")", "EARLY_EXIT", "(", "err", "=", "CHDERR_INVALID_PARAMETER", ")", ";", "if", "(", "header", "->", "compression", "!=", "oldheader", ".", "compression", ")", "EARLY_EXIT", "(", "err", "=", "CHDERR_INVALID_PARAMETER", ")", ";", "if", "(", "header", "->", "hunkbytes", "!=", "oldheader", ".", "hunkbytes", ")", "EARLY_EXIT", "(", "err", "=", "CHDERR_INVALID_PARAMETER", ")", ";", "if", "(", "header", "->", "totalhunks", "!=", "oldheader", ".", "totalhunks", ")", "EARLY_EXIT", "(", "err", "=", "CHDERR_INVALID_PARAMETER", ")", ";", "if", "(", "header", "->", "metaoffset", "!=", "oldheader", ".", "metaoffset", ")", "EARLY_EXIT", "(", "err", "=", "CHDERR_INVALID_PARAMETER", ")", ";", "if", "(", "header", "->", "obsolete_hunksize", "!=", "oldheader", ".", "obsolete_hunksize", ")", "EARLY_EXIT", "(", "err", "=", "CHDERR_INVALID_PARAMETER", ")", ";", "err", "=", "header_write", "(", "file", ",", "header", ")", ";", "if", "(", "err", "!=", "CHDERR_NONE", ")", "EARLY_EXIT", "(", "err", ")", ";", "return", "CHDERR_NONE", ";", "cleanup", ":", "return", "err", ";", "}" ]
chd_set_header_file - write the current header to the file
[ "chd_set_header_file", "-", "write", "the", "current", "header", "to", "the", "file" ]
[ "/* validate the header */", "/* read the old header */", "/* make sure we're only making valid changes */", "/* write the new header */" ]
[ { "param": "file", "type": "core_file" }, { "param": "header", "type": "chd_header" } ]
{ "returns": [], "raises": [], "params": [ { "identifier": "file", "type": "core_file", "docstring": null, "docstring_tokens": [], "default": null, "is_optional": null }, { "identifier": "header", "type": "chd_header", "docstring": null, "docstring_tokens": [], "default": null, "is_optional": null } ], "outlier_params": [], "others": [] }
de1516c83d91cc3a04aa5401f52c2a975d90a0d4
lofunz/mieme
Reloaded/tags/MAME4droid.Reloaded.1.0.WIP/src/lib/util/chd.c
[ "Unlicense" ]
C
chd_set_header
chd_error
chd_error chd_set_header(const char *filename, const chd_header *header) { core_file *file = NULL; file_error filerr; chd_error err; filerr = core_fopen(filename, OPEN_FLAG_READ | OPEN_FLAG_WRITE, &file); if (filerr != FILERR_NONE) { err = CHDERR_FILE_NOT_FOUND; goto cleanup; } err = chd_set_header_file(file, header); if (err != CHDERR_NONE) goto cleanup; cleanup: if (file != NULL) core_fclose(file); return err; }
/*------------------------------------------------- chd_set_header - write the current header to the file -------------------------------------------------*/
write the current header to the file
[ "write", "the", "current", "header", "to", "the", "file" ]
chd_error chd_set_header(const char *filename, const chd_header *header) { core_file *file = NULL; file_error filerr; chd_error err; filerr = core_fopen(filename, OPEN_FLAG_READ | OPEN_FLAG_WRITE, &file); if (filerr != FILERR_NONE) { err = CHDERR_FILE_NOT_FOUND; goto cleanup; } err = chd_set_header_file(file, header); if (err != CHDERR_NONE) goto cleanup; cleanup: if (file != NULL) core_fclose(file); return err; }
[ "chd_error", "chd_set_header", "(", "const", "char", "*", "filename", ",", "const", "chd_header", "*", "header", ")", "{", "core_file", "*", "file", "=", "NULL", ";", "file_error", "filerr", ";", "chd_error", "err", ";", "filerr", "=", "core_fopen", "(", "filename", ",", "OPEN_FLAG_READ", "|", "OPEN_FLAG_WRITE", ",", "&", "file", ")", ";", "if", "(", "filerr", "!=", "FILERR_NONE", ")", "{", "err", "=", "CHDERR_FILE_NOT_FOUND", ";", "goto", "cleanup", ";", "}", "err", "=", "chd_set_header_file", "(", "file", ",", "header", ")", ";", "if", "(", "err", "!=", "CHDERR_NONE", ")", "goto", "cleanup", ";", "cleanup", ":", "if", "(", "file", "!=", "NULL", ")", "core_fclose", "(", "file", ")", ";", "return", "err", ";", "}" ]
chd_set_header - write the current header to the file
[ "chd_set_header", "-", "write", "the", "current", "header", "to", "the", "file" ]
[]
[ { "param": "filename", "type": "char" }, { "param": "header", "type": "chd_header" } ]
{ "returns": [], "raises": [], "params": [ { "identifier": "filename", "type": "char", "docstring": null, "docstring_tokens": [], "default": null, "is_optional": null }, { "identifier": "header", "type": "chd_header", "docstring": null, "docstring_tokens": [], "default": null, "is_optional": null } ], "outlier_params": [], "others": [] }
de1516c83d91cc3a04aa5401f52c2a975d90a0d4
lofunz/mieme
Reloaded/tags/MAME4droid.Reloaded.1.0.WIP/src/lib/util/chd.c
[ "Unlicense" ]
C
chd_read
chd_error
chd_error chd_read(chd_file *chd, UINT32 hunknum, void *buffer) { /* punt if NULL or invalid */ if (chd == NULL || chd->cookie != COOKIE_VALUE) return CHDERR_INVALID_PARAMETER; /* if we're past the end, fail */ if (hunknum >= chd->header.totalhunks) return CHDERR_HUNK_OUT_OF_RANGE; /* wait for any pending async operations */ wait_for_pending_async(chd); /* perform the read */ return hunk_read_into_memory(chd, hunknum, (UINT8 *)buffer); }
/*------------------------------------------------- chd_read - read a single hunk from the CHD file -------------------------------------------------*/
read a single hunk from the CHD file
[ "read", "a", "single", "hunk", "from", "the", "CHD", "file" ]
chd_error chd_read(chd_file *chd, UINT32 hunknum, void *buffer) { if (chd == NULL || chd->cookie != COOKIE_VALUE) return CHDERR_INVALID_PARAMETER; if (hunknum >= chd->header.totalhunks) return CHDERR_HUNK_OUT_OF_RANGE; wait_for_pending_async(chd); return hunk_read_into_memory(chd, hunknum, (UINT8 *)buffer); }
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chd_read - read a single hunk from the CHD file
[ "chd_read", "-", "read", "a", "single", "hunk", "from", "the", "CHD", "file" ]
[ "/* punt if NULL or invalid */", "/* if we're past the end, fail */", "/* wait for any pending async operations */", "/* perform the read */" ]
[ { "param": "chd", "type": "chd_file" }, { "param": "hunknum", "type": "UINT32" }, { "param": "buffer", "type": "void" } ]
{ "returns": [], "raises": [], "params": [ { "identifier": "chd", "type": "chd_file", "docstring": null, "docstring_tokens": [], "default": null, "is_optional": null }, { "identifier": "hunknum", "type": "UINT32", "docstring": null, "docstring_tokens": [], "default": null, "is_optional": null }, { "identifier": "buffer", "type": "void", "docstring": null, "docstring_tokens": [], "default": null, "is_optional": null } ], "outlier_params": [], "others": [] }
de1516c83d91cc3a04aa5401f52c2a975d90a0d4
lofunz/mieme
Reloaded/tags/MAME4droid.Reloaded.1.0.WIP/src/lib/util/chd.c
[ "Unlicense" ]
C
chd_read_async
chd_error
chd_error chd_read_async(chd_file *chd, UINT32 hunknum, void *buffer) { /* punt if NULL or invalid */ if (chd == NULL || chd->cookie != COOKIE_VALUE) return CHDERR_INVALID_PARAMETER; /* if we're past the end, fail */ if (hunknum >= chd->header.totalhunks) return CHDERR_HUNK_OUT_OF_RANGE; /* wait for any pending async operations */ wait_for_pending_async(chd); /* set the async parameters */ chd->async_hunknum = hunknum; chd->async_buffer = buffer; /* queue the work item */ if (queue_async_operation(chd, async_read_callback)) return CHDERR_OPERATION_PENDING; /* if we fail, fall back on the sync version */ return chd_read(chd, hunknum, buffer); }
/*------------------------------------------------- chd_read_async - read a single hunk from the CHD file asynchronously -------------------------------------------------*/
read a single hunk from the CHD file asynchronously
[ "read", "a", "single", "hunk", "from", "the", "CHD", "file", "asynchronously" ]
chd_error chd_read_async(chd_file *chd, UINT32 hunknum, void *buffer) { if (chd == NULL || chd->cookie != COOKIE_VALUE) return CHDERR_INVALID_PARAMETER; if (hunknum >= chd->header.totalhunks) return CHDERR_HUNK_OUT_OF_RANGE; wait_for_pending_async(chd); chd->async_hunknum = hunknum; chd->async_buffer = buffer; if (queue_async_operation(chd, async_read_callback)) return CHDERR_OPERATION_PENDING; return chd_read(chd, hunknum, buffer); }
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chd_read_async - read a single hunk from the CHD file asynchronously
[ "chd_read_async", "-", "read", "a", "single", "hunk", "from", "the", "CHD", "file", "asynchronously" ]
[ "/* punt if NULL or invalid */", "/* if we're past the end, fail */", "/* wait for any pending async operations */", "/* set the async parameters */", "/* queue the work item */", "/* if we fail, fall back on the sync version */" ]
[ { "param": "chd", "type": "chd_file" }, { "param": "hunknum", "type": "UINT32" }, { "param": "buffer", "type": "void" } ]
{ "returns": [], "raises": [], "params": [ { "identifier": "chd", "type": "chd_file", "docstring": null, "docstring_tokens": [], "default": null, "is_optional": null }, { "identifier": "hunknum", "type": "UINT32", "docstring": null, "docstring_tokens": [], "default": null, "is_optional": null }, { "identifier": "buffer", "type": "void", "docstring": null, "docstring_tokens": [], "default": null, "is_optional": null } ], "outlier_params": [], "others": [] }
de1516c83d91cc3a04aa5401f52c2a975d90a0d4
lofunz/mieme
Reloaded/tags/MAME4droid.Reloaded.1.0.WIP/src/lib/util/chd.c
[ "Unlicense" ]
C
chd_write
chd_error
chd_error chd_write(chd_file *chd, UINT32 hunknum, const void *buffer) { /* punt if NULL or invalid */ if (chd == NULL || chd->cookie != COOKIE_VALUE) return CHDERR_INVALID_PARAMETER; /* if we're past the end, fail */ if (hunknum >= chd->header.totalhunks) return CHDERR_HUNK_OUT_OF_RANGE; /* wait for any pending async operations */ wait_for_pending_async(chd); /* then write out the hunk */ return hunk_write_from_memory(chd, hunknum, (const UINT8 *)buffer); }
/*------------------------------------------------- chd_write - write a single hunk to the CHD file -------------------------------------------------*/
write a single hunk to the CHD file
[ "write", "a", "single", "hunk", "to", "the", "CHD", "file" ]
chd_error chd_write(chd_file *chd, UINT32 hunknum, const void *buffer) { if (chd == NULL || chd->cookie != COOKIE_VALUE) return CHDERR_INVALID_PARAMETER; if (hunknum >= chd->header.totalhunks) return CHDERR_HUNK_OUT_OF_RANGE; wait_for_pending_async(chd); return hunk_write_from_memory(chd, hunknum, (const UINT8 *)buffer); }
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chd_write - write a single hunk to the CHD file
[ "chd_write", "-", "write", "a", "single", "hunk", "to", "the", "CHD", "file" ]
[ "/* punt if NULL or invalid */", "/* if we're past the end, fail */", "/* wait for any pending async operations */", "/* then write out the hunk */" ]
[ { "param": "chd", "type": "chd_file" }, { "param": "hunknum", "type": "UINT32" }, { "param": "buffer", "type": "void" } ]
{ "returns": [], "raises": [], "params": [ { "identifier": "chd", "type": "chd_file", "docstring": null, "docstring_tokens": [], "default": null, "is_optional": null }, { "identifier": "hunknum", "type": "UINT32", "docstring": null, "docstring_tokens": [], "default": null, "is_optional": null }, { "identifier": "buffer", "type": "void", "docstring": null, "docstring_tokens": [], "default": null, "is_optional": null } ], "outlier_params": [], "others": [] }
de1516c83d91cc3a04aa5401f52c2a975d90a0d4
lofunz/mieme
Reloaded/tags/MAME4droid.Reloaded.1.0.WIP/src/lib/util/chd.c
[ "Unlicense" ]
C
chd_write_async
chd_error
chd_error chd_write_async(chd_file *chd, UINT32 hunknum, const void *buffer) { /* punt if NULL or invalid */ if (chd == NULL || chd->cookie != COOKIE_VALUE) return CHDERR_INVALID_PARAMETER; /* if we're past the end, fail */ if (hunknum >= chd->header.totalhunks) return CHDERR_HUNK_OUT_OF_RANGE; /* wait for any pending async operations */ wait_for_pending_async(chd); /* set the async parameters */ chd->async_hunknum = hunknum; chd->async_buffer = (void *)buffer; /* queue the work item */ if (queue_async_operation(chd, async_write_callback)) return CHDERR_OPERATION_PENDING; /* if we fail, fall back on the sync version */ return chd_write(chd, hunknum, buffer); }
/*------------------------------------------------- chd_write_async - write a single hunk to the CHD file asynchronously -------------------------------------------------*/
write a single hunk to the CHD file asynchronously
[ "write", "a", "single", "hunk", "to", "the", "CHD", "file", "asynchronously" ]
chd_error chd_write_async(chd_file *chd, UINT32 hunknum, const void *buffer) { if (chd == NULL || chd->cookie != COOKIE_VALUE) return CHDERR_INVALID_PARAMETER; if (hunknum >= chd->header.totalhunks) return CHDERR_HUNK_OUT_OF_RANGE; wait_for_pending_async(chd); chd->async_hunknum = hunknum; chd->async_buffer = (void *)buffer; if (queue_async_operation(chd, async_write_callback)) return CHDERR_OPERATION_PENDING; return chd_write(chd, hunknum, buffer); }
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chd_write_async - write a single hunk to the CHD file asynchronously
[ "chd_write_async", "-", "write", "a", "single", "hunk", "to", "the", "CHD", "file", "asynchronously" ]
[ "/* punt if NULL or invalid */", "/* if we're past the end, fail */", "/* wait for any pending async operations */", "/* set the async parameters */", "/* queue the work item */", "/* if we fail, fall back on the sync version */" ]
[ { "param": "chd", "type": "chd_file" }, { "param": "hunknum", "type": "UINT32" }, { "param": "buffer", "type": "void" } ]
{ "returns": [], "raises": [], "params": [ { "identifier": "chd", "type": "chd_file", "docstring": null, "docstring_tokens": [], "default": null, "is_optional": null }, { "identifier": "hunknum", "type": "UINT32", "docstring": null, "docstring_tokens": [], "default": null, "is_optional": null }, { "identifier": "buffer", "type": "void", "docstring": null, "docstring_tokens": [], "default": null, "is_optional": null } ], "outlier_params": [], "others": [] }
de1516c83d91cc3a04aa5401f52c2a975d90a0d4
lofunz/mieme
Reloaded/tags/MAME4droid.Reloaded.1.0.WIP/src/lib/util/chd.c
[ "Unlicense" ]
C
chd_async_complete
chd_error
chd_error chd_async_complete(chd_file *chd) { void *result; /* if nothing present, return an error */ if (chd->workitem == NULL) return CHDERR_NO_ASYNC_OPERATION; /* wait for the work to complete */ wait_for_pending_async(chd); /* get the result and free the work item */ result = osd_work_item_result(chd->workitem); osd_work_item_release(chd->workitem); chd->workitem = NULL; return (chd_error)(ptrdiff_t)result; }
/*------------------------------------------------- chd_async_complete - get the result of a completed work item and clear it out of the system -------------------------------------------------*/
get the result of a completed work item and clear it out of the system
[ "get", "the", "result", "of", "a", "completed", "work", "item", "and", "clear", "it", "out", "of", "the", "system" ]
chd_error chd_async_complete(chd_file *chd) { void *result; if (chd->workitem == NULL) return CHDERR_NO_ASYNC_OPERATION; wait_for_pending_async(chd); result = osd_work_item_result(chd->workitem); osd_work_item_release(chd->workitem); chd->workitem = NULL; return (chd_error)(ptrdiff_t)result; }
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chd_async_complete - get the result of a completed work item and clear it out of the system
[ "chd_async_complete", "-", "get", "the", "result", "of", "a", "completed", "work", "item", "and", "clear", "it", "out", "of", "the", "system" ]
[ "/* if nothing present, return an error */", "/* wait for the work to complete */", "/* get the result and free the work item */" ]
[ { "param": "chd", "type": "chd_file" } ]
{ "returns": [], "raises": [], "params": [ { "identifier": "chd", "type": "chd_file", "docstring": null, "docstring_tokens": [], "default": null, "is_optional": null } ], "outlier_params": [], "others": [] }
de1516c83d91cc3a04aa5401f52c2a975d90a0d4
lofunz/mieme
Reloaded/tags/MAME4droid.Reloaded.1.0.WIP/src/lib/util/chd.c
[ "Unlicense" ]
C
chd_get_metadata
chd_error
chd_error chd_get_metadata(chd_file *chd, UINT32 searchtag, UINT32 searchindex, void *output, UINT32 outputlen, UINT32 *resultlen, UINT32 *resulttag, UINT8 *resultflags) { metadata_entry metaentry; chd_error err; UINT32 count; /* wait for any pending async operations */ wait_for_pending_async(chd); /* if we didn't find it, just return */ err = metadata_find_entry(chd, searchtag, searchindex, &metaentry); if (err != CHDERR_NONE) { /* unless we're an old version and they are requesting hard disk metadata */ if (chd->header.version < 3 && (searchtag == HARD_DISK_METADATA_TAG || searchtag == CHDMETATAG_WILDCARD) && searchindex == 0) { char faux_metadata[256]; UINT32 faux_length; /* fill in the faux metadata */ sprintf(faux_metadata, HARD_DISK_METADATA_FORMAT, chd->header.obsolete_cylinders, chd->header.obsolete_heads, chd->header.obsolete_sectors, chd->header.hunkbytes / chd->header.obsolete_hunksize); faux_length = (UINT32)strlen(faux_metadata) + 1; /* copy the metadata itself */ memcpy(output, faux_metadata, MIN(outputlen, faux_length)); /* return the length of the data and the tag */ if (resultlen != NULL) *resultlen = faux_length; if (resulttag != NULL) *resulttag = HARD_DISK_METADATA_TAG; return CHDERR_NONE; } return err; } /* read the metadata */ outputlen = MIN(outputlen, metaentry.length); core_fseek(chd->file, metaentry.offset + METADATA_HEADER_SIZE, SEEK_SET); count = core_fread(chd->file, output, outputlen); if (count != outputlen) return CHDERR_READ_ERROR; /* return the length of the data and the tag */ if (resultlen != NULL) *resultlen = metaentry.length; if (resulttag != NULL) *resulttag = metaentry.metatag; if (resultflags != NULL) *resultflags = metaentry.flags; return CHDERR_NONE; }
/*------------------------------------------------- chd_get_metadata - get the indexed metadata of the given type -------------------------------------------------*/
get the indexed metadata of the given type
[ "get", "the", "indexed", "metadata", "of", "the", "given", "type" ]
chd_error chd_get_metadata(chd_file *chd, UINT32 searchtag, UINT32 searchindex, void *output, UINT32 outputlen, UINT32 *resultlen, UINT32 *resulttag, UINT8 *resultflags) { metadata_entry metaentry; chd_error err; UINT32 count; wait_for_pending_async(chd); err = metadata_find_entry(chd, searchtag, searchindex, &metaentry); if (err != CHDERR_NONE) { if (chd->header.version < 3 && (searchtag == HARD_DISK_METADATA_TAG || searchtag == CHDMETATAG_WILDCARD) && searchindex == 0) { char faux_metadata[256]; UINT32 faux_length; sprintf(faux_metadata, HARD_DISK_METADATA_FORMAT, chd->header.obsolete_cylinders, chd->header.obsolete_heads, chd->header.obsolete_sectors, chd->header.hunkbytes / chd->header.obsolete_hunksize); faux_length = (UINT32)strlen(faux_metadata) + 1; memcpy(output, faux_metadata, MIN(outputlen, faux_length)); if (resultlen != NULL) *resultlen = faux_length; if (resulttag != NULL) *resulttag = HARD_DISK_METADATA_TAG; return CHDERR_NONE; } return err; } outputlen = MIN(outputlen, metaentry.length); core_fseek(chd->file, metaentry.offset + METADATA_HEADER_SIZE, SEEK_SET); count = core_fread(chd->file, output, outputlen); if (count != outputlen) return CHDERR_READ_ERROR; if (resultlen != NULL) *resultlen = metaentry.length; if (resulttag != NULL) *resulttag = metaentry.metatag; if (resultflags != NULL) *resultflags = metaentry.flags; return CHDERR_NONE; }
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chd_get_metadata - get the indexed metadata of the given type
[ "chd_get_metadata", "-", "get", "the", "indexed", "metadata", "of", "the", "given", "type" ]
[ "/* wait for any pending async operations */", "/* if we didn't find it, just return */", "/* unless we're an old version and they are requesting hard disk metadata */", "/* fill in the faux metadata */", "/* copy the metadata itself */", "/* return the length of the data and the tag */", "/* read the metadata */", "/* return the length of the data and the tag */" ]
[ { "param": "chd", "type": "chd_file" }, { "param": "searchtag", "type": "UINT32" }, { "param": "searchindex", "type": "UINT32" }, { "param": "output", "type": "void" }, { "param": "outputlen", "type": "UINT32" }, { "param": "resultlen", "type": "UINT32" }, { "param": "resulttag", "type": "UINT32" }, { "param": "resultflags", "type": "UINT8" } ]
{ "returns": [], "raises": [], "params": [ { "identifier": "chd", "type": "chd_file", "docstring": null, "docstring_tokens": [], "default": null, "is_optional": null }, { "identifier": "searchtag", "type": "UINT32", "docstring": null, "docstring_tokens": [], "default": null, "is_optional": null }, { "identifier": "searchindex", "type": "UINT32", "docstring": null, "docstring_tokens": [], "default": null, "is_optional": null }, { "identifier": "output", "type": "void", "docstring": null, "docstring_tokens": [], "default": null, "is_optional": null }, { "identifier": "outputlen", "type": "UINT32", "docstring": null, "docstring_tokens": [], "default": null, "is_optional": null }, { "identifier": "resultlen", "type": "UINT32", "docstring": null, "docstring_tokens": [], "default": null, "is_optional": null }, { "identifier": "resulttag", "type": "UINT32", "docstring": null, "docstring_tokens": [], "default": null, "is_optional": null }, { "identifier": "resultflags", "type": "UINT8", "docstring": null, "docstring_tokens": [], "default": null, "is_optional": null } ], "outlier_params": [], "others": [] }
de1516c83d91cc3a04aa5401f52c2a975d90a0d4
lofunz/mieme
Reloaded/tags/MAME4droid.Reloaded.1.0.WIP/src/lib/util/chd.c
[ "Unlicense" ]
C
chd_set_metadata
chd_error
chd_error chd_set_metadata(chd_file *chd, UINT32 metatag, UINT32 metaindex, const void *inputbuf, UINT32 inputlen, UINT8 flags) { UINT8 raw_meta_header[METADATA_HEADER_SIZE]; metadata_entry metaentry; chd_error err; UINT64 offset; UINT32 count; /* if the disk is an old version, punt */ if (chd->header.version < 3) return CHDERR_NOT_SUPPORTED; /* if the disk isn't writeable, punt */ if (!(chd->header.flags & CHDFLAGS_IS_WRITEABLE)) return CHDERR_FILE_NOT_WRITEABLE; /* must write at least 1 byte */ if (inputlen < 1) return CHDERR_INVALID_PARAMETER; /* no more than 16MB */ if (inputlen >= 16 * 1024 * 1024) return CHDERR_INVALID_PARAMETER; /* wait for any pending async operations */ wait_for_pending_async(chd); /* find the entry if it already exists */ err = metadata_find_entry(chd, metatag, metaindex, &metaentry); /* if it's there and it fits, just overwrite */ if (err == CHDERR_NONE && inputlen <= metaentry.length) { /* overwrite the original data with our new input data */ core_fseek(chd->file, metaentry.offset + METADATA_HEADER_SIZE, SEEK_SET); count = core_fwrite(chd->file, inputbuf, inputlen); if (count != inputlen) { err = CHDERR_WRITE_ERROR; goto update; } /* if the lengths don't match, we need to update the length in our header */ if (inputlen != metaentry.length) err = metadata_set_length(chd, metaentry.offset, inputlen); goto update; } /* if we already have an entry, unlink it */ if (err == CHDERR_NONE) { err = metadata_set_previous_next(chd, metaentry.prev, metaentry.next); if (err != CHDERR_NONE) goto update; } /* now build us a new entry */ put_bigendian_uint32(&raw_meta_header[0], metatag); put_bigendian_uint32(&raw_meta_header[4], (inputlen & 0x00ffffff) | (flags << 24)); put_bigendian_uint64(&raw_meta_header[8], (err == CHDERR_NONE) ? metaentry.next : 0); /* write out the new header */ offset = core_fsize(chd->file); core_fseek(chd->file, offset, SEEK_SET); count = core_fwrite(chd->file, raw_meta_header, sizeof(raw_meta_header)); if (count != sizeof(raw_meta_header)) { err = CHDERR_WRITE_ERROR; goto update; } /* follow that with the data */ core_fseek(chd->file, offset + METADATA_HEADER_SIZE, SEEK_SET); count = core_fwrite(chd->file, inputbuf, inputlen); if (count != inputlen) { err = CHDERR_WRITE_ERROR; goto update; } /* set the previous entry to point to us */ err = metadata_set_previous_next(chd, metaentry.prev, offset); update: /* update the hash */ if (metadata_compute_hash(chd, chd->header.rawsha1, chd->header.sha1) == CHDERR_NONE) err = header_write(chd->file, &chd->header); return err; }
/*------------------------------------------------- chd_set_metadata - write the indexed metadata of the given type -------------------------------------------------*/
write the indexed metadata of the given type
[ "write", "the", "indexed", "metadata", "of", "the", "given", "type" ]
chd_error chd_set_metadata(chd_file *chd, UINT32 metatag, UINT32 metaindex, const void *inputbuf, UINT32 inputlen, UINT8 flags) { UINT8 raw_meta_header[METADATA_HEADER_SIZE]; metadata_entry metaentry; chd_error err; UINT64 offset; UINT32 count; if (chd->header.version < 3) return CHDERR_NOT_SUPPORTED; if (!(chd->header.flags & CHDFLAGS_IS_WRITEABLE)) return CHDERR_FILE_NOT_WRITEABLE; if (inputlen < 1) return CHDERR_INVALID_PARAMETER; if (inputlen >= 16 * 1024 * 1024) return CHDERR_INVALID_PARAMETER; wait_for_pending_async(chd); err = metadata_find_entry(chd, metatag, metaindex, &metaentry); if (err == CHDERR_NONE && inputlen <= metaentry.length) { core_fseek(chd->file, metaentry.offset + METADATA_HEADER_SIZE, SEEK_SET); count = core_fwrite(chd->file, inputbuf, inputlen); if (count != inputlen) { err = CHDERR_WRITE_ERROR; goto update; } if (inputlen != metaentry.length) err = metadata_set_length(chd, metaentry.offset, inputlen); goto update; } if (err == CHDERR_NONE) { err = metadata_set_previous_next(chd, metaentry.prev, metaentry.next); if (err != CHDERR_NONE) goto update; } put_bigendian_uint32(&raw_meta_header[0], metatag); put_bigendian_uint32(&raw_meta_header[4], (inputlen & 0x00ffffff) | (flags << 24)); put_bigendian_uint64(&raw_meta_header[8], (err == CHDERR_NONE) ? metaentry.next : 0); offset = core_fsize(chd->file); core_fseek(chd->file, offset, SEEK_SET); count = core_fwrite(chd->file, raw_meta_header, sizeof(raw_meta_header)); if (count != sizeof(raw_meta_header)) { err = CHDERR_WRITE_ERROR; goto update; } core_fseek(chd->file, offset + METADATA_HEADER_SIZE, SEEK_SET); count = core_fwrite(chd->file, inputbuf, inputlen); if (count != inputlen) { err = CHDERR_WRITE_ERROR; goto update; } err = metadata_set_previous_next(chd, metaentry.prev, offset); update: if (metadata_compute_hash(chd, chd->header.rawsha1, chd->header.sha1) == CHDERR_NONE) err = header_write(chd->file, &chd->header); return err; }
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chd_set_metadata - write the indexed metadata of the given type
[ "chd_set_metadata", "-", "write", "the", "indexed", "metadata", "of", "the", "given", "type" ]
[ "/* if the disk is an old version, punt */", "/* if the disk isn't writeable, punt */", "/* must write at least 1 byte */", "/* no more than 16MB */", "/* wait for any pending async operations */", "/* find the entry if it already exists */", "/* if it's there and it fits, just overwrite */", "/* overwrite the original data with our new input data */", "/* if the lengths don't match, we need to update the length in our header */", "/* if we already have an entry, unlink it */", "/* now build us a new entry */", "/* write out the new header */", "/* follow that with the data */", "/* set the previous entry to point to us */", "/* update the hash */" ]
[ { "param": "chd", "type": "chd_file" }, { "param": "metatag", "type": "UINT32" }, { "param": "metaindex", "type": "UINT32" }, { "param": "inputbuf", "type": "void" }, { "param": "inputlen", "type": "UINT32" }, { "param": "flags", "type": "UINT8" } ]
{ "returns": [], "raises": [], "params": [ { "identifier": "chd", "type": "chd_file", "docstring": null, "docstring_tokens": [], "default": null, "is_optional": null }, { "identifier": "metatag", "type": "UINT32", "docstring": null, "docstring_tokens": [], "default": null, "is_optional": null }, { "identifier": "metaindex", "type": "UINT32", "docstring": null, "docstring_tokens": [], "default": null, "is_optional": null }, { "identifier": "inputbuf", "type": "void", "docstring": null, "docstring_tokens": [], "default": null, "is_optional": null }, { "identifier": "inputlen", "type": "UINT32", "docstring": null, "docstring_tokens": [], "default": null, "is_optional": null }, { "identifier": "flags", "type": "UINT8", "docstring": null, "docstring_tokens": [], "default": null, "is_optional": null } ], "outlier_params": [], "others": [] }
de1516c83d91cc3a04aa5401f52c2a975d90a0d4
lofunz/mieme
Reloaded/tags/MAME4droid.Reloaded.1.0.WIP/src/lib/util/chd.c
[ "Unlicense" ]
C
chd_clone_metadata
chd_error
chd_error chd_clone_metadata(chd_file *source, chd_file *dest) { UINT32 metatag, metasize, metaindex; UINT8 metabuffer[1024]; UINT8 metaflags; chd_error err; /* clone the metadata */ for (metaindex = 0; ; metaindex++) { /* fetch the next piece of metadata */ err = chd_get_metadata(source, CHDMETATAG_WILDCARD, metaindex, metabuffer, sizeof(metabuffer), &metasize, &metatag, &metaflags); if (err != CHDERR_NONE) { if (err == CHDERR_METADATA_NOT_FOUND) err = CHDERR_NONE; break; } /* if that fit, just write it back from the temporary buffer */ if (metasize <= sizeof(metabuffer)) { /* write it to the target */ err = chd_set_metadata(dest, metatag, CHD_METAINDEX_APPEND, metabuffer, metasize, metaflags); if (err != CHDERR_NONE) break; } /* otherwise, allocate a bigger temporary buffer */ else { UINT8 *allocbuffer = (UINT8 *)malloc(metasize); if (allocbuffer == NULL) { err = CHDERR_OUT_OF_MEMORY; break; } /* re-read the whole thing */ err = chd_get_metadata(source, CHDMETATAG_WILDCARD, metaindex, allocbuffer, metasize, &metasize, &metatag, &metaflags); if (err != CHDERR_NONE) { free(allocbuffer); break; } /* write it to the target */ err = chd_set_metadata(dest, metatag, CHD_METAINDEX_APPEND, allocbuffer, metasize, metaflags); free(allocbuffer); if (err != CHDERR_NONE) break; } } return err; }
/*------------------------------------------------- chd_clone_metadata - clone the metadata from one CHD to a second -------------------------------------------------*/
clone the metadata from one CHD to a second
[ "clone", "the", "metadata", "from", "one", "CHD", "to", "a", "second" ]
chd_error chd_clone_metadata(chd_file *source, chd_file *dest) { UINT32 metatag, metasize, metaindex; UINT8 metabuffer[1024]; UINT8 metaflags; chd_error err; for (metaindex = 0; ; metaindex++) { err = chd_get_metadata(source, CHDMETATAG_WILDCARD, metaindex, metabuffer, sizeof(metabuffer), &metasize, &metatag, &metaflags); if (err != CHDERR_NONE) { if (err == CHDERR_METADATA_NOT_FOUND) err = CHDERR_NONE; break; } if (metasize <= sizeof(metabuffer)) { err = chd_set_metadata(dest, metatag, CHD_METAINDEX_APPEND, metabuffer, metasize, metaflags); if (err != CHDERR_NONE) break; } else { UINT8 *allocbuffer = (UINT8 *)malloc(metasize); if (allocbuffer == NULL) { err = CHDERR_OUT_OF_MEMORY; break; } err = chd_get_metadata(source, CHDMETATAG_WILDCARD, metaindex, allocbuffer, metasize, &metasize, &metatag, &metaflags); if (err != CHDERR_NONE) { free(allocbuffer); break; } err = chd_set_metadata(dest, metatag, CHD_METAINDEX_APPEND, allocbuffer, metasize, metaflags); free(allocbuffer); if (err != CHDERR_NONE) break; } } return err; }
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chd_clone_metadata - clone the metadata from one CHD to a second
[ "chd_clone_metadata", "-", "clone", "the", "metadata", "from", "one", "CHD", "to", "a", "second" ]
[ "/* clone the metadata */", "/* fetch the next piece of metadata */", "/* if that fit, just write it back from the temporary buffer */", "/* write it to the target */", "/* otherwise, allocate a bigger temporary buffer */", "/* re-read the whole thing */", "/* write it to the target */" ]
[ { "param": "source", "type": "chd_file" }, { "param": "dest", "type": "chd_file" } ]
{ "returns": [], "raises": [], "params": [ { "identifier": "source", "type": "chd_file", "docstring": null, "docstring_tokens": [], "default": null, "is_optional": null }, { "identifier": "dest", "type": "chd_file", "docstring": null, "docstring_tokens": [], "default": null, "is_optional": null } ], "outlier_params": [], "others": [] }
de1516c83d91cc3a04aa5401f52c2a975d90a0d4
lofunz/mieme
Reloaded/tags/MAME4droid.Reloaded.1.0.WIP/src/lib/util/chd.c
[ "Unlicense" ]
C
chd_compress_begin
chd_error
chd_error chd_compress_begin(chd_file *chd) { chd_error err; /* verify parameters */ if (chd == NULL) return CHDERR_INVALID_PARAMETER; /* wait for any pending async operations */ wait_for_pending_async(chd); /* mark the CHD writeable and write the updated header */ chd->header.flags |= CHDFLAGS_IS_WRITEABLE; err = header_write(chd->file, &chd->header); if (err != CHDERR_NONE) return err; /* create CRC maps for the new CHD and the parent */ crcmap_init(chd, FALSE); if (chd->parent != NULL) crcmap_init(chd->parent, TRUE); /* init the MD5/SHA1 computations */ MD5Init(&chd->compmd5); sha1_init(&chd->compsha1); chd->compressing = TRUE; chd->comphunk = 0; return CHDERR_NONE; }
/*------------------------------------------------- chd_compress_begin - begin compressing data into a CHD -------------------------------------------------*/
begin compressing data into a CHD
[ "begin", "compressing", "data", "into", "a", "CHD" ]
chd_error chd_compress_begin(chd_file *chd) { chd_error err; if (chd == NULL) return CHDERR_INVALID_PARAMETER; wait_for_pending_async(chd); chd->header.flags |= CHDFLAGS_IS_WRITEABLE; err = header_write(chd->file, &chd->header); if (err != CHDERR_NONE) return err; crcmap_init(chd, FALSE); if (chd->parent != NULL) crcmap_init(chd->parent, TRUE); MD5Init(&chd->compmd5); sha1_init(&chd->compsha1); chd->compressing = TRUE; chd->comphunk = 0; return CHDERR_NONE; }
[ "chd_error", "chd_compress_begin", "(", "chd_file", "*", "chd", ")", "{", "chd_error", "err", ";", "if", "(", "chd", "==", "NULL", ")", "return", "CHDERR_INVALID_PARAMETER", ";", "wait_for_pending_async", "(", "chd", ")", ";", "chd", "->", "header", ".", "flags", "|=", "CHDFLAGS_IS_WRITEABLE", ";", "err", "=", "header_write", "(", "chd", "->", "file", ",", "&", "chd", "->", "header", ")", ";", "if", "(", "err", "!=", "CHDERR_NONE", ")", "return", "err", ";", "crcmap_init", "(", "chd", ",", "FALSE", ")", ";", "if", "(", "chd", "->", "parent", "!=", "NULL", ")", "crcmap_init", "(", "chd", "->", "parent", ",", "TRUE", ")", ";", "MD5Init", "(", "&", "chd", "->", "compmd5", ")", ";", "sha1_init", "(", "&", "chd", "->", "compsha1", ")", ";", "chd", "->", "compressing", "=", "TRUE", ";", "chd", "->", "comphunk", "=", "0", ";", "return", "CHDERR_NONE", ";", "}" ]
chd_compress_begin - begin compressing data into a CHD
[ "chd_compress_begin", "-", "begin", "compressing", "data", "into", "a", "CHD" ]
[ "/* verify parameters */", "/* wait for any pending async operations */", "/* mark the CHD writeable and write the updated header */", "/* create CRC maps for the new CHD and the parent */", "/* init the MD5/SHA1 computations */" ]
[ { "param": "chd", "type": "chd_file" } ]
{ "returns": [], "raises": [], "params": [ { "identifier": "chd", "type": "chd_file", "docstring": null, "docstring_tokens": [], "default": null, "is_optional": null } ], "outlier_params": [], "others": [] }
de1516c83d91cc3a04aa5401f52c2a975d90a0d4
lofunz/mieme
Reloaded/tags/MAME4droid.Reloaded.1.0.WIP/src/lib/util/chd.c
[ "Unlicense" ]
C
chd_compress_hunk
chd_error
chd_error chd_compress_hunk(chd_file *chd, const void *data, double *curratio) { UINT32 thishunk = chd->comphunk++; UINT64 sourceoffset = (UINT64)thishunk * (UINT64)chd->header.hunkbytes; UINT32 bytestochecksum; const void *crcdata; chd_error err; /* error if in the wrong state */ if (!chd->compressing) return CHDERR_INVALID_STATE; /* write out the hunk */ err = hunk_write_from_memory(chd, thishunk, (const UINT8 *)data); if (err != CHDERR_NONE) return err; /* if we are lossy, then we need to use the decompressed version in */ /* the cache as our MD5/SHA1 source */ crcdata = (chd->codecintf->lossy || data == NULL) ? chd->cache : data; /* update the MD5/SHA1 */ bytestochecksum = chd->header.hunkbytes; if (sourceoffset + chd->header.hunkbytes > chd->header.logicalbytes) { if (sourceoffset >= chd->header.logicalbytes) bytestochecksum = 0; else bytestochecksum = chd->header.logicalbytes - sourceoffset; } if (bytestochecksum > 0) { MD5Update(&chd->compmd5, (const unsigned char *)crcdata, bytestochecksum); sha1_update(&chd->compsha1, bytestochecksum, (const UINT8 *)crcdata); } /* update our CRC map */ if ((chd->map[thishunk].flags & MAP_ENTRY_FLAG_TYPE_MASK) != MAP_ENTRY_TYPE_SELF_HUNK && (chd->map[thishunk].flags & MAP_ENTRY_FLAG_TYPE_MASK) != MAP_ENTRY_TYPE_PARENT_HUNK) crcmap_add_entry(chd, thishunk); /* update the ratio */ if (curratio != NULL) { UINT64 curlength = core_fsize(chd->file); *curratio = 1.0 - (double)curlength / (double)((UINT64)chd->comphunk * (UINT64)chd->header.hunkbytes); } return CHDERR_NONE; }
/*------------------------------------------------- chd_compress_hunk - append data to a CHD that is being compressed -------------------------------------------------*/
append data to a CHD that is being compressed
[ "append", "data", "to", "a", "CHD", "that", "is", "being", "compressed" ]
chd_error chd_compress_hunk(chd_file *chd, const void *data, double *curratio) { UINT32 thishunk = chd->comphunk++; UINT64 sourceoffset = (UINT64)thishunk * (UINT64)chd->header.hunkbytes; UINT32 bytestochecksum; const void *crcdata; chd_error err; if (!chd->compressing) return CHDERR_INVALID_STATE; err = hunk_write_from_memory(chd, thishunk, (const UINT8 *)data); if (err != CHDERR_NONE) return err; crcdata = (chd->codecintf->lossy || data == NULL) ? chd->cache : data; bytestochecksum = chd->header.hunkbytes; if (sourceoffset + chd->header.hunkbytes > chd->header.logicalbytes) { if (sourceoffset >= chd->header.logicalbytes) bytestochecksum = 0; else bytestochecksum = chd->header.logicalbytes - sourceoffset; } if (bytestochecksum > 0) { MD5Update(&chd->compmd5, (const unsigned char *)crcdata, bytestochecksum); sha1_update(&chd->compsha1, bytestochecksum, (const UINT8 *)crcdata); } if ((chd->map[thishunk].flags & MAP_ENTRY_FLAG_TYPE_MASK) != MAP_ENTRY_TYPE_SELF_HUNK && (chd->map[thishunk].flags & MAP_ENTRY_FLAG_TYPE_MASK) != MAP_ENTRY_TYPE_PARENT_HUNK) crcmap_add_entry(chd, thishunk); if (curratio != NULL) { UINT64 curlength = core_fsize(chd->file); *curratio = 1.0 - (double)curlength / (double)((UINT64)chd->comphunk * (UINT64)chd->header.hunkbytes); } return CHDERR_NONE; }
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chd_compress_hunk - append data to a CHD that is being compressed
[ "chd_compress_hunk", "-", "append", "data", "to", "a", "CHD", "that", "is", "being", "compressed" ]
[ "/* error if in the wrong state */", "/* write out the hunk */", "/* if we are lossy, then we need to use the decompressed version in */", "/* the cache as our MD5/SHA1 source */", "/* update the MD5/SHA1 */", "/* update our CRC map */", "/* update the ratio */" ]
[ { "param": "chd", "type": "chd_file" }, { "param": "data", "type": "void" }, { "param": "curratio", "type": "double" } ]
{ "returns": [], "raises": [], "params": [ { "identifier": "chd", "type": "chd_file", "docstring": null, "docstring_tokens": [], "default": null, "is_optional": null }, { "identifier": "data", "type": "void", "docstring": null, "docstring_tokens": [], "default": null, "is_optional": null }, { "identifier": "curratio", "type": "double", "docstring": null, "docstring_tokens": [], "default": null, "is_optional": null } ], "outlier_params": [], "others": [] }
de1516c83d91cc3a04aa5401f52c2a975d90a0d4
lofunz/mieme
Reloaded/tags/MAME4droid.Reloaded.1.0.WIP/src/lib/util/chd.c
[ "Unlicense" ]
C
chd_verify_begin
chd_error
chd_error chd_verify_begin(chd_file *chd) { /* verify parameters */ if (chd == NULL) return CHDERR_INVALID_PARAMETER; /* if this is a writeable file image, we can't verify */ if (chd->header.flags & CHDFLAGS_IS_WRITEABLE) return CHDERR_CANT_VERIFY; /* wait for any pending async operations */ wait_for_pending_async(chd); /* init the MD5/SHA1 computations */ MD5Init(&chd->vermd5); sha1_init(&chd->versha1); chd->verifying = TRUE; chd->verhunk = 0; return CHDERR_NONE; }
/*------------------------------------------------- chd_verify_begin - begin compressing data into a CHD -------------------------------------------------*/
begin compressing data into a CHD
[ "begin", "compressing", "data", "into", "a", "CHD" ]
chd_error chd_verify_begin(chd_file *chd) { if (chd == NULL) return CHDERR_INVALID_PARAMETER; if (chd->header.flags & CHDFLAGS_IS_WRITEABLE) return CHDERR_CANT_VERIFY; wait_for_pending_async(chd); MD5Init(&chd->vermd5); sha1_init(&chd->versha1); chd->verifying = TRUE; chd->verhunk = 0; return CHDERR_NONE; }
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chd_verify_begin - begin compressing data into a CHD
[ "chd_verify_begin", "-", "begin", "compressing", "data", "into", "a", "CHD" ]
[ "/* verify parameters */", "/* if this is a writeable file image, we can't verify */", "/* wait for any pending async operations */", "/* init the MD5/SHA1 computations */" ]
[ { "param": "chd", "type": "chd_file" } ]
{ "returns": [], "raises": [], "params": [ { "identifier": "chd", "type": "chd_file", "docstring": null, "docstring_tokens": [], "default": null, "is_optional": null } ], "outlier_params": [], "others": [] }
de1516c83d91cc3a04aa5401f52c2a975d90a0d4
lofunz/mieme
Reloaded/tags/MAME4droid.Reloaded.1.0.WIP/src/lib/util/chd.c
[ "Unlicense" ]
C
chd_verify_hunk
chd_error
chd_error chd_verify_hunk(chd_file *chd) { UINT32 thishunk = chd->verhunk++; UINT64 hunkoffset = (UINT64)thishunk * (UINT64)chd->header.hunkbytes; map_entry *entry; chd_error err; /* error if in the wrong state */ if (!chd->verifying) return CHDERR_INVALID_STATE; /* read the hunk into the cache */ err = hunk_read_into_cache(chd, thishunk); if (err != CHDERR_NONE) return err; /* update the MD5/SHA1 */ if (hunkoffset < chd->header.logicalbytes) { UINT64 bytestochecksum = MIN(chd->header.hunkbytes, chd->header.logicalbytes - hunkoffset); if (bytestochecksum > 0) { MD5Update(&chd->vermd5, chd->cache, bytestochecksum); sha1_update(&chd->versha1, bytestochecksum, chd->cache); } } /* validate the CRC if we have one */ entry = &chd->map[thishunk]; if (!(entry->flags & MAP_ENTRY_FLAG_NO_CRC) && entry->crc != crc32(0, chd->cache, chd->header.hunkbytes)) return CHDERR_DECOMPRESSION_ERROR; return CHDERR_NONE; }
/*------------------------------------------------- chd_verify_hunk - verify the next hunk in the CHD -------------------------------------------------*/
verify the next hunk in the CHD
[ "verify", "the", "next", "hunk", "in", "the", "CHD" ]
chd_error chd_verify_hunk(chd_file *chd) { UINT32 thishunk = chd->verhunk++; UINT64 hunkoffset = (UINT64)thishunk * (UINT64)chd->header.hunkbytes; map_entry *entry; chd_error err; if (!chd->verifying) return CHDERR_INVALID_STATE; err = hunk_read_into_cache(chd, thishunk); if (err != CHDERR_NONE) return err; if (hunkoffset < chd->header.logicalbytes) { UINT64 bytestochecksum = MIN(chd->header.hunkbytes, chd->header.logicalbytes - hunkoffset); if (bytestochecksum > 0) { MD5Update(&chd->vermd5, chd->cache, bytestochecksum); sha1_update(&chd->versha1, bytestochecksum, chd->cache); } } entry = &chd->map[thishunk]; if (!(entry->flags & MAP_ENTRY_FLAG_NO_CRC) && entry->crc != crc32(0, chd->cache, chd->header.hunkbytes)) return CHDERR_DECOMPRESSION_ERROR; return CHDERR_NONE; }
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chd_verify_hunk - verify the next hunk in the CHD
[ "chd_verify_hunk", "-", "verify", "the", "next", "hunk", "in", "the", "CHD" ]
[ "/* error if in the wrong state */", "/* read the hunk into the cache */", "/* update the MD5/SHA1 */", "/* validate the CRC if we have one */" ]
[ { "param": "chd", "type": "chd_file" } ]
{ "returns": [], "raises": [], "params": [ { "identifier": "chd", "type": "chd_file", "docstring": null, "docstring_tokens": [], "default": null, "is_optional": null } ], "outlier_params": [], "others": [] }
de1516c83d91cc3a04aa5401f52c2a975d90a0d4
lofunz/mieme
Reloaded/tags/MAME4droid.Reloaded.1.0.WIP/src/lib/util/chd.c
[ "Unlicense" ]
C
chd_get_codec_name
char
const char *chd_get_codec_name(UINT32 codec) { int intfnum; /* look for a matching codec and return its string */ for (intfnum = 0; intfnum < ARRAY_LENGTH(codec_interfaces); intfnum++) if (codec_interfaces[intfnum].compression == codec) return codec_interfaces[intfnum].compname; return "Unknown"; }
/*------------------------------------------------- chd_get_codec_name - get the name of a particular codec -------------------------------------------------*/
get the name of a particular codec
[ "get", "the", "name", "of", "a", "particular", "codec" ]
const char *chd_get_codec_name(UINT32 codec) { int intfnum; for (intfnum = 0; intfnum < ARRAY_LENGTH(codec_interfaces); intfnum++) if (codec_interfaces[intfnum].compression == codec) return codec_interfaces[intfnum].compname; return "Unknown"; }
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chd_get_codec_name - get the name of a particular codec
[ "chd_get_codec_name", "-", "get", "the", "name", "of", "a", "particular", "codec" ]
[ "/* look for a matching codec and return its string */" ]
[ { "param": "codec", "type": "UINT32" } ]
{ "returns": [], "raises": [], "params": [ { "identifier": "codec", "type": "UINT32", "docstring": null, "docstring_tokens": [], "default": null, "is_optional": null } ], "outlier_params": [], "others": [] }
de1516c83d91cc3a04aa5401f52c2a975d90a0d4
lofunz/mieme
Reloaded/tags/MAME4droid.Reloaded.1.0.WIP/src/lib/util/chd.c
[ "Unlicense" ]
C
header_validate
chd_error
static chd_error header_validate(const chd_header *header) { int intfnum; /* require a valid version */ if (header->version == 0 || header->version > CHD_HEADER_VERSION) return CHDERR_UNSUPPORTED_VERSION; /* require a valid length */ if ((header->version == 1 && header->length != CHD_V1_HEADER_SIZE) || (header->version == 2 && header->length != CHD_V2_HEADER_SIZE) || (header->version == 3 && header->length != CHD_V3_HEADER_SIZE) || (header->version == 4 && header->length != CHD_V4_HEADER_SIZE)) return CHDERR_INVALID_PARAMETER; /* require valid flags */ if (header->flags & CHDFLAGS_UNDEFINED) return CHDERR_INVALID_PARAMETER; /* require a supported compression mechanism */ for (intfnum = 0; intfnum < ARRAY_LENGTH(codec_interfaces); intfnum++) if (codec_interfaces[intfnum].compression == header->compression) break; if (intfnum == ARRAY_LENGTH(codec_interfaces)) return CHDERR_INVALID_PARAMETER; /* require a valid hunksize */ if (header->hunkbytes == 0 || header->hunkbytes >= 65536 * 256) return CHDERR_INVALID_PARAMETER; /* require a valid hunk count */ if (header->totalhunks == 0) return CHDERR_INVALID_PARAMETER; /* require a valid MD5 and/or SHA1 if we're using a parent */ if ((header->flags & CHDFLAGS_HAS_PARENT) && memcmp(header->parentmd5, nullmd5, sizeof(nullmd5)) == 0 && memcmp(header->parentsha1, nullsha1, sizeof(nullsha1)) == 0) return CHDERR_INVALID_PARAMETER; /* if we're V3 or later, the obsolete fields must be 0 */ if (header->version >= 3 && (header->obsolete_cylinders != 0 || header->obsolete_sectors != 0 || header->obsolete_heads != 0 || header->obsolete_hunksize != 0)) return CHDERR_INVALID_PARAMETER; /* if we're pre-V3, the obsolete fields must NOT be 0 */ if (header->version < 3 && (header->obsolete_cylinders == 0 || header->obsolete_sectors == 0 || header->obsolete_heads == 0 || header->obsolete_hunksize == 0)) return CHDERR_INVALID_PARAMETER; return CHDERR_NONE; }
/*------------------------------------------------- header_validate - check the validity of a CHD header -------------------------------------------------*/
check the validity of a CHD header
[ "check", "the", "validity", "of", "a", "CHD", "header" ]
static chd_error header_validate(const chd_header *header) { int intfnum; if (header->version == 0 || header->version > CHD_HEADER_VERSION) return CHDERR_UNSUPPORTED_VERSION; if ((header->version == 1 && header->length != CHD_V1_HEADER_SIZE) || (header->version == 2 && header->length != CHD_V2_HEADER_SIZE) || (header->version == 3 && header->length != CHD_V3_HEADER_SIZE) || (header->version == 4 && header->length != CHD_V4_HEADER_SIZE)) return CHDERR_INVALID_PARAMETER; if (header->flags & CHDFLAGS_UNDEFINED) return CHDERR_INVALID_PARAMETER; for (intfnum = 0; intfnum < ARRAY_LENGTH(codec_interfaces); intfnum++) if (codec_interfaces[intfnum].compression == header->compression) break; if (intfnum == ARRAY_LENGTH(codec_interfaces)) return CHDERR_INVALID_PARAMETER; if (header->hunkbytes == 0 || header->hunkbytes >= 65536 * 256) return CHDERR_INVALID_PARAMETER; if (header->totalhunks == 0) return CHDERR_INVALID_PARAMETER; if ((header->flags & CHDFLAGS_HAS_PARENT) && memcmp(header->parentmd5, nullmd5, sizeof(nullmd5)) == 0 && memcmp(header->parentsha1, nullsha1, sizeof(nullsha1)) == 0) return CHDERR_INVALID_PARAMETER; if (header->version >= 3 && (header->obsolete_cylinders != 0 || header->obsolete_sectors != 0 || header->obsolete_heads != 0 || header->obsolete_hunksize != 0)) return CHDERR_INVALID_PARAMETER; if (header->version < 3 && (header->obsolete_cylinders == 0 || header->obsolete_sectors == 0 || header->obsolete_heads == 0 || header->obsolete_hunksize == 0)) return CHDERR_INVALID_PARAMETER; return CHDERR_NONE; }
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header_validate - check the validity of a CHD header
[ "header_validate", "-", "check", "the", "validity", "of", "a", "CHD", "header" ]
[ "/* require a valid version */", "/* require a valid length */", "/* require valid flags */", "/* require a supported compression mechanism */", "/* require a valid hunksize */", "/* require a valid hunk count */", "/* require a valid MD5 and/or SHA1 if we're using a parent */", "/* if we're V3 or later, the obsolete fields must be 0 */", "/* if we're pre-V3, the obsolete fields must NOT be 0 */" ]
[ { "param": "header", "type": "chd_header" } ]
{ "returns": [], "raises": [], "params": [ { "identifier": "header", "type": "chd_header", "docstring": null, "docstring_tokens": [], "default": null, "is_optional": null } ], "outlier_params": [], "others": [] }
de1516c83d91cc3a04aa5401f52c2a975d90a0d4
lofunz/mieme
Reloaded/tags/MAME4droid.Reloaded.1.0.WIP/src/lib/util/chd.c
[ "Unlicense" ]
C
header_read
chd_error
static chd_error header_read(core_file *file, chd_header *header) { UINT8 rawheader[CHD_MAX_HEADER_SIZE]; UINT32 count; /* punt if NULL */ if (header == NULL) return CHDERR_INVALID_PARAMETER; /* punt if invalid file */ if (file == NULL) return CHDERR_INVALID_FILE; /* seek and read */ core_fseek(file, 0, SEEK_SET); count = core_fread(file, rawheader, sizeof(rawheader)); if (count != sizeof(rawheader)) return CHDERR_READ_ERROR; /* verify the tag */ if (strncmp((char *)rawheader, "MComprHD", 8) != 0) return CHDERR_INVALID_DATA; /* extract the direct data */ memset(header, 0, sizeof(*header)); header->length = get_bigendian_uint32(&rawheader[8]); header->version = get_bigendian_uint32(&rawheader[12]); /* make sure it's a version we understand */ if (header->version == 0 || header->version > CHD_HEADER_VERSION) return CHDERR_UNSUPPORTED_VERSION; /* make sure the length is expected */ if ((header->version == 1 && header->length != CHD_V1_HEADER_SIZE) || (header->version == 2 && header->length != CHD_V2_HEADER_SIZE) || (header->version == 3 && header->length != CHD_V3_HEADER_SIZE) || (header->version == 4 && header->length != CHD_V4_HEADER_SIZE)) return CHDERR_INVALID_DATA; /* extract the common data */ header->flags = get_bigendian_uint32(&rawheader[16]); header->compression = get_bigendian_uint32(&rawheader[20]); /* extract the V1/V2-specific data */ if (header->version < 3) { int seclen = (header->version == 1) ? CHD_V1_SECTOR_SIZE : get_bigendian_uint32(&rawheader[76]); header->obsolete_hunksize = get_bigendian_uint32(&rawheader[24]); header->totalhunks = get_bigendian_uint32(&rawheader[28]); header->obsolete_cylinders = get_bigendian_uint32(&rawheader[32]); header->obsolete_heads = get_bigendian_uint32(&rawheader[36]); header->obsolete_sectors = get_bigendian_uint32(&rawheader[40]); memcpy(header->md5, &rawheader[44], CHD_MD5_BYTES); memcpy(header->parentmd5, &rawheader[60], CHD_MD5_BYTES); header->logicalbytes = (UINT64)header->obsolete_cylinders * (UINT64)header->obsolete_heads * (UINT64)header->obsolete_sectors * (UINT64)seclen; header->hunkbytes = seclen * header->obsolete_hunksize; header->metaoffset = 0; } /* extract the V3-specific data */ else if (header->version == 3) { header->totalhunks = get_bigendian_uint32(&rawheader[24]); header->logicalbytes = get_bigendian_uint64(&rawheader[28]); header->metaoffset = get_bigendian_uint64(&rawheader[36]); memcpy(header->md5, &rawheader[44], CHD_MD5_BYTES); memcpy(header->parentmd5, &rawheader[60], CHD_MD5_BYTES); header->hunkbytes = get_bigendian_uint32(&rawheader[76]); memcpy(header->sha1, &rawheader[80], CHD_SHA1_BYTES); memcpy(header->parentsha1, &rawheader[100], CHD_SHA1_BYTES); } /* extract the V4-specific data */ else { header->totalhunks = get_bigendian_uint32(&rawheader[24]); header->logicalbytes = get_bigendian_uint64(&rawheader[28]); header->metaoffset = get_bigendian_uint64(&rawheader[36]); header->hunkbytes = get_bigendian_uint32(&rawheader[44]); memcpy(header->sha1, &rawheader[48], CHD_SHA1_BYTES); memcpy(header->parentsha1, &rawheader[68], CHD_SHA1_BYTES); memcpy(header->rawsha1, &rawheader[88], CHD_SHA1_BYTES); } /* guess it worked */ return CHDERR_NONE; }
/*------------------------------------------------- header_read - read a CHD header into the internal data structure -------------------------------------------------*/
read a CHD header into the internal data structure
[ "read", "a", "CHD", "header", "into", "the", "internal", "data", "structure" ]
static chd_error header_read(core_file *file, chd_header *header) { UINT8 rawheader[CHD_MAX_HEADER_SIZE]; UINT32 count; if (header == NULL) return CHDERR_INVALID_PARAMETER; if (file == NULL) return CHDERR_INVALID_FILE; core_fseek(file, 0, SEEK_SET); count = core_fread(file, rawheader, sizeof(rawheader)); if (count != sizeof(rawheader)) return CHDERR_READ_ERROR; if (strncmp((char *)rawheader, "MComprHD", 8) != 0) return CHDERR_INVALID_DATA; memset(header, 0, sizeof(*header)); header->length = get_bigendian_uint32(&rawheader[8]); header->version = get_bigendian_uint32(&rawheader[12]); if (header->version == 0 || header->version > CHD_HEADER_VERSION) return CHDERR_UNSUPPORTED_VERSION; if ((header->version == 1 && header->length != CHD_V1_HEADER_SIZE) || (header->version == 2 && header->length != CHD_V2_HEADER_SIZE) || (header->version == 3 && header->length != CHD_V3_HEADER_SIZE) || (header->version == 4 && header->length != CHD_V4_HEADER_SIZE)) return CHDERR_INVALID_DATA; header->flags = get_bigendian_uint32(&rawheader[16]); header->compression = get_bigendian_uint32(&rawheader[20]); if (header->version < 3) { int seclen = (header->version == 1) ? CHD_V1_SECTOR_SIZE : get_bigendian_uint32(&rawheader[76]); header->obsolete_hunksize = get_bigendian_uint32(&rawheader[24]); header->totalhunks = get_bigendian_uint32(&rawheader[28]); header->obsolete_cylinders = get_bigendian_uint32(&rawheader[32]); header->obsolete_heads = get_bigendian_uint32(&rawheader[36]); header->obsolete_sectors = get_bigendian_uint32(&rawheader[40]); memcpy(header->md5, &rawheader[44], CHD_MD5_BYTES); memcpy(header->parentmd5, &rawheader[60], CHD_MD5_BYTES); header->logicalbytes = (UINT64)header->obsolete_cylinders * (UINT64)header->obsolete_heads * (UINT64)header->obsolete_sectors * (UINT64)seclen; header->hunkbytes = seclen * header->obsolete_hunksize; header->metaoffset = 0; } else if (header->version == 3) { header->totalhunks = get_bigendian_uint32(&rawheader[24]); header->logicalbytes = get_bigendian_uint64(&rawheader[28]); header->metaoffset = get_bigendian_uint64(&rawheader[36]); memcpy(header->md5, &rawheader[44], CHD_MD5_BYTES); memcpy(header->parentmd5, &rawheader[60], CHD_MD5_BYTES); header->hunkbytes = get_bigendian_uint32(&rawheader[76]); memcpy(header->sha1, &rawheader[80], CHD_SHA1_BYTES); memcpy(header->parentsha1, &rawheader[100], CHD_SHA1_BYTES); } else { header->totalhunks = get_bigendian_uint32(&rawheader[24]); header->logicalbytes = get_bigendian_uint64(&rawheader[28]); header->metaoffset = get_bigendian_uint64(&rawheader[36]); header->hunkbytes = get_bigendian_uint32(&rawheader[44]); memcpy(header->sha1, &rawheader[48], CHD_SHA1_BYTES); memcpy(header->parentsha1, &rawheader[68], CHD_SHA1_BYTES); memcpy(header->rawsha1, &rawheader[88], CHD_SHA1_BYTES); } return CHDERR_NONE; }
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header_read - read a CHD header into the internal data structure
[ "header_read", "-", "read", "a", "CHD", "header", "into", "the", "internal", "data", "structure" ]
[ "/* punt if NULL */", "/* punt if invalid file */", "/* seek and read */", "/* verify the tag */", "/* extract the direct data */", "/* make sure it's a version we understand */", "/* make sure the length is expected */", "/* extract the common data */", "/* extract the V1/V2-specific data */", "/* extract the V3-specific data */", "/* extract the V4-specific data */", "/* guess it worked */" ]
[ { "param": "file", "type": "core_file" }, { "param": "header", "type": "chd_header" } ]
{ "returns": [], "raises": [], "params": [ { "identifier": "file", "type": "core_file", "docstring": null, "docstring_tokens": [], "default": null, "is_optional": null }, { "identifier": "header", "type": "chd_header", "docstring": null, "docstring_tokens": [], "default": null, "is_optional": null } ], "outlier_params": [], "others": [] }
de1516c83d91cc3a04aa5401f52c2a975d90a0d4
lofunz/mieme
Reloaded/tags/MAME4droid.Reloaded.1.0.WIP/src/lib/util/chd.c
[ "Unlicense" ]
C
header_write
chd_error
static chd_error header_write(core_file *file, const chd_header *header) { UINT8 rawheader[CHD_MAX_HEADER_SIZE]; UINT32 count; /* punt if NULL */ if (header == NULL) return CHDERR_INVALID_PARAMETER; /* punt if invalid file */ if (file == NULL) return CHDERR_INVALID_FILE; /* only support writing modern headers */ if (header->version != 4) return CHDERR_INVALID_PARAMETER; /* assemble the data */ memset(rawheader, 0, sizeof(rawheader)); memcpy(rawheader, "MComprHD", 8); put_bigendian_uint32(&rawheader[8], CHD_V4_HEADER_SIZE); put_bigendian_uint32(&rawheader[12], header->version); put_bigendian_uint32(&rawheader[16], header->flags); put_bigendian_uint32(&rawheader[20], header->compression); put_bigendian_uint32(&rawheader[24], header->totalhunks); put_bigendian_uint64(&rawheader[28], header->logicalbytes); put_bigendian_uint64(&rawheader[36], header->metaoffset); put_bigendian_uint32(&rawheader[44], header->hunkbytes); memcpy(&rawheader[48], header->sha1, CHD_SHA1_BYTES); memcpy(&rawheader[68], header->parentsha1, CHD_SHA1_BYTES); memcpy(&rawheader[88], header->rawsha1, CHD_SHA1_BYTES); /* seek and write */ core_fseek(file, 0, SEEK_SET); count = core_fwrite(file, rawheader, CHD_V4_HEADER_SIZE); if (count != CHD_V4_HEADER_SIZE) return CHDERR_WRITE_ERROR; return CHDERR_NONE; }
/*------------------------------------------------- header_write - write a CHD header from the internal data structure -------------------------------------------------*/
write a CHD header from the internal data structure
[ "write", "a", "CHD", "header", "from", "the", "internal", "data", "structure" ]
static chd_error header_write(core_file *file, const chd_header *header) { UINT8 rawheader[CHD_MAX_HEADER_SIZE]; UINT32 count; if (header == NULL) return CHDERR_INVALID_PARAMETER; if (file == NULL) return CHDERR_INVALID_FILE; if (header->version != 4) return CHDERR_INVALID_PARAMETER; memset(rawheader, 0, sizeof(rawheader)); memcpy(rawheader, "MComprHD", 8); put_bigendian_uint32(&rawheader[8], CHD_V4_HEADER_SIZE); put_bigendian_uint32(&rawheader[12], header->version); put_bigendian_uint32(&rawheader[16], header->flags); put_bigendian_uint32(&rawheader[20], header->compression); put_bigendian_uint32(&rawheader[24], header->totalhunks); put_bigendian_uint64(&rawheader[28], header->logicalbytes); put_bigendian_uint64(&rawheader[36], header->metaoffset); put_bigendian_uint32(&rawheader[44], header->hunkbytes); memcpy(&rawheader[48], header->sha1, CHD_SHA1_BYTES); memcpy(&rawheader[68], header->parentsha1, CHD_SHA1_BYTES); memcpy(&rawheader[88], header->rawsha1, CHD_SHA1_BYTES); core_fseek(file, 0, SEEK_SET); count = core_fwrite(file, rawheader, CHD_V4_HEADER_SIZE); if (count != CHD_V4_HEADER_SIZE) return CHDERR_WRITE_ERROR; return CHDERR_NONE; }
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header_write - write a CHD header from the internal data structure
[ "header_write", "-", "write", "a", "CHD", "header", "from", "the", "internal", "data", "structure" ]
[ "/* punt if NULL */", "/* punt if invalid file */", "/* only support writing modern headers */", "/* assemble the data */", "/* seek and write */" ]
[ { "param": "file", "type": "core_file" }, { "param": "header", "type": "chd_header" } ]
{ "returns": [], "raises": [], "params": [ { "identifier": "file", "type": "core_file", "docstring": null, "docstring_tokens": [], "default": null, "is_optional": null }, { "identifier": "header", "type": "chd_header", "docstring": null, "docstring_tokens": [], "default": null, "is_optional": null } ], "outlier_params": [], "others": [] }
de1516c83d91cc3a04aa5401f52c2a975d90a0d4
lofunz/mieme
Reloaded/tags/MAME4droid.Reloaded.1.0.WIP/src/lib/util/chd.c
[ "Unlicense" ]
C
hunk_read_into_cache
chd_error
static chd_error hunk_read_into_cache(chd_file *chd, UINT32 hunknum) { chd_error err; /* track the max */ if (hunknum > chd->maxhunk) chd->maxhunk = hunknum; /* if we're already in the cache, we're done */ if (chd->cachehunk == hunknum) return CHDERR_NONE; chd->cachehunk = ~0; /* otherwise, read the data */ err = hunk_read_into_memory(chd, hunknum, chd->cache); if (err != CHDERR_NONE) return err; /* mark the hunk successfully cached in */ chd->cachehunk = hunknum; return CHDERR_NONE; }
/*------------------------------------------------- hunk_read_into_cache - read a hunk into the CHD's hunk cache -------------------------------------------------*/
read a hunk into the CHD's hunk cache
[ "read", "a", "hunk", "into", "the", "CHD", "'", "s", "hunk", "cache" ]
static chd_error hunk_read_into_cache(chd_file *chd, UINT32 hunknum) { chd_error err; if (hunknum > chd->maxhunk) chd->maxhunk = hunknum; if (chd->cachehunk == hunknum) return CHDERR_NONE; chd->cachehunk = ~0; err = hunk_read_into_memory(chd, hunknum, chd->cache); if (err != CHDERR_NONE) return err; chd->cachehunk = hunknum; return CHDERR_NONE; }
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hunk_read_into_cache - read a hunk into the CHD's hunk cache
[ "hunk_read_into_cache", "-", "read", "a", "hunk", "into", "the", "CHD", "'", "s", "hunk", "cache" ]
[ "/* track the max */", "/* if we're already in the cache, we're done */", "/* otherwise, read the data */", "/* mark the hunk successfully cached in */" ]
[ { "param": "chd", "type": "chd_file" }, { "param": "hunknum", "type": "UINT32" } ]
{ "returns": [], "raises": [], "params": [ { "identifier": "chd", "type": "chd_file", "docstring": null, "docstring_tokens": [], "default": null, "is_optional": null }, { "identifier": "hunknum", "type": "UINT32", "docstring": null, "docstring_tokens": [], "default": null, "is_optional": null } ], "outlier_params": [], "others": [] }
de1516c83d91cc3a04aa5401f52c2a975d90a0d4
lofunz/mieme
Reloaded/tags/MAME4droid.Reloaded.1.0.WIP/src/lib/util/chd.c
[ "Unlicense" ]
C
hunk_read_into_memory
chd_error
static chd_error hunk_read_into_memory(chd_file *chd, UINT32 hunknum, UINT8 *dest) { map_entry *entry = &chd->map[hunknum]; chd_error err; UINT32 bytes; /* return an error if out of range */ if (hunknum >= chd->header.totalhunks) return CHDERR_HUNK_OUT_OF_RANGE; /* switch off the entry type */ switch (entry->flags & MAP_ENTRY_FLAG_TYPE_MASK) { /* compressed data */ case MAP_ENTRY_TYPE_COMPRESSED: /* read it into the decompression buffer */ core_fseek(chd->file, entry->offset, SEEK_SET); bytes = core_fread(chd->file, chd->compressed, entry->length); if (bytes != entry->length) return CHDERR_READ_ERROR; /* now decompress using the codec */ err = CHDERR_NONE; if (chd->codecintf->decompress != NULL) err = (*chd->codecintf->decompress)(chd, entry->length, dest); if (err != CHDERR_NONE) return err; break; /* uncompressed data */ case MAP_ENTRY_TYPE_UNCOMPRESSED: core_fseek(chd->file, entry->offset, SEEK_SET); bytes = core_fread(chd->file, dest, chd->header.hunkbytes); if (bytes != chd->header.hunkbytes) return CHDERR_READ_ERROR; break; /* mini-compressed data */ case MAP_ENTRY_TYPE_MINI: put_bigendian_uint64(&dest[0], entry->offset); for (bytes = 8; bytes < chd->header.hunkbytes; bytes++) dest[bytes] = dest[bytes - 8]; break; /* self-referenced data */ case MAP_ENTRY_TYPE_SELF_HUNK: if (chd->cachehunk == entry->offset && dest == chd->cache) break; return hunk_read_into_memory(chd, entry->offset, dest); /* parent-referenced data */ case MAP_ENTRY_TYPE_PARENT_HUNK: err = hunk_read_into_memory(chd->parent, entry->offset, dest); if (err != CHDERR_NONE) return err; break; } return CHDERR_NONE; }
/*------------------------------------------------- hunk_read_into_memory - read a hunk into memory at the given location -------------------------------------------------*/
read a hunk into memory at the given location
[ "read", "a", "hunk", "into", "memory", "at", "the", "given", "location" ]
static chd_error hunk_read_into_memory(chd_file *chd, UINT32 hunknum, UINT8 *dest) { map_entry *entry = &chd->map[hunknum]; chd_error err; UINT32 bytes; if (hunknum >= chd->header.totalhunks) return CHDERR_HUNK_OUT_OF_RANGE; switch (entry->flags & MAP_ENTRY_FLAG_TYPE_MASK) { case MAP_ENTRY_TYPE_COMPRESSED: core_fseek(chd->file, entry->offset, SEEK_SET); bytes = core_fread(chd->file, chd->compressed, entry->length); if (bytes != entry->length) return CHDERR_READ_ERROR; err = CHDERR_NONE; if (chd->codecintf->decompress != NULL) err = (*chd->codecintf->decompress)(chd, entry->length, dest); if (err != CHDERR_NONE) return err; break; case MAP_ENTRY_TYPE_UNCOMPRESSED: core_fseek(chd->file, entry->offset, SEEK_SET); bytes = core_fread(chd->file, dest, chd->header.hunkbytes); if (bytes != chd->header.hunkbytes) return CHDERR_READ_ERROR; break; case MAP_ENTRY_TYPE_MINI: put_bigendian_uint64(&dest[0], entry->offset); for (bytes = 8; bytes < chd->header.hunkbytes; bytes++) dest[bytes] = dest[bytes - 8]; break; case MAP_ENTRY_TYPE_SELF_HUNK: if (chd->cachehunk == entry->offset && dest == chd->cache) break; return hunk_read_into_memory(chd, entry->offset, dest); case MAP_ENTRY_TYPE_PARENT_HUNK: err = hunk_read_into_memory(chd->parent, entry->offset, dest); if (err != CHDERR_NONE) return err; break; } return CHDERR_NONE; }
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hunk_read_into_memory - read a hunk into memory at the given location
[ "hunk_read_into_memory", "-", "read", "a", "hunk", "into", "memory", "at", "the", "given", "location" ]
[ "/* return an error if out of range */", "/* switch off the entry type */", "/* compressed data */", "/* read it into the decompression buffer */", "/* now decompress using the codec */", "/* uncompressed data */", "/* mini-compressed data */", "/* self-referenced data */", "/* parent-referenced data */" ]
[ { "param": "chd", "type": "chd_file" }, { "param": "hunknum", "type": "UINT32" }, { "param": "dest", "type": "UINT8" } ]
{ "returns": [], "raises": [], "params": [ { "identifier": "chd", "type": "chd_file", "docstring": null, "docstring_tokens": [], "default": null, "is_optional": null }, { "identifier": "hunknum", "type": "UINT32", "docstring": null, "docstring_tokens": [], "default": null, "is_optional": null }, { "identifier": "dest", "type": "UINT8", "docstring": null, "docstring_tokens": [], "default": null, "is_optional": null } ], "outlier_params": [], "others": [] }
de1516c83d91cc3a04aa5401f52c2a975d90a0d4
lofunz/mieme
Reloaded/tags/MAME4droid.Reloaded.1.0.WIP/src/lib/util/chd.c
[ "Unlicense" ]
C
hunk_write_from_memory
chd_error
static chd_error hunk_write_from_memory(chd_file *chd, UINT32 hunknum, const UINT8 *src) { map_entry *entry = &chd->map[hunknum]; map_entry newentry; UINT8 fileentry[MAP_ENTRY_SIZE]; const void *data = src; UINT32 bytes = 0, match; chd_error err; /* track the max */ if (hunknum > chd->maxhunk) chd->maxhunk = hunknum; /* first compute the CRC of the original data */ newentry.crc = 0; if (src != NULL) newentry.crc = crc32(0, &src[0], chd->header.hunkbytes); /* if we're not a lossy codec, compute the CRC and look for matches */ if (!chd->codecintf->lossy && src != NULL) { /* some extra stuff for zlib+ compression */ if (chd->header.compression >= CHDCOMPRESSION_ZLIB_PLUS) { /* see if we can mini-compress first */ for (bytes = 8; bytes < chd->header.hunkbytes; bytes++) if (src[bytes] != src[bytes - 8]) break; /* if so, we don't need to write any data */ if (bytes == chd->header.hunkbytes) { newentry.offset = get_bigendian_uint64(&src[0]); newentry.length = 0; newentry.flags = MAP_ENTRY_TYPE_MINI; goto write_entry; } /* otherwise, see if we can find a match in the current file */ match = crcmap_find_hunk(chd, hunknum, newentry.crc, &src[0]); if (match != NO_MATCH) { newentry.offset = match; newentry.length = 0; newentry.flags = MAP_ENTRY_TYPE_SELF_HUNK; goto write_entry; } /* if we have a parent, see if we can find a match in there */ if (chd->header.flags & CHDFLAGS_HAS_PARENT) { match = crcmap_find_hunk(chd->parent, ~0, newentry.crc, &src[0]); if (match != NO_MATCH) { newentry.offset = match; newentry.length = 0; newentry.flags = MAP_ENTRY_TYPE_PARENT_HUNK; goto write_entry; } } } } /* now try compressing the data */ err = CHDERR_COMPRESSION_ERROR; if (chd->codecintf->compress != NULL) err = (*chd->codecintf->compress)(chd, src, &bytes); /* if that worked, and we're lossy, decompress and CRC the result */ if (err == CHDERR_NONE && (chd->codecintf->lossy || src == NULL)) { err = (*chd->codecintf->decompress)(chd, bytes, chd->cache); if (err == CHDERR_NONE) newentry.crc = crc32(0, chd->cache, chd->header.hunkbytes); } /* if we succeeded in compressing the data, replace our data pointer and mark it so */ if (err == CHDERR_NONE) { data = chd->compressed; newentry.length = bytes; newentry.flags = MAP_ENTRY_TYPE_COMPRESSED; } /* otherwise, mark it uncompressed and use the original data */ else { newentry.length = chd->header.hunkbytes; newentry.flags = MAP_ENTRY_TYPE_UNCOMPRESSED; } /* if the data doesn't fit into the previous entry, make a new one at the eof */ newentry.offset = entry->offset; if (newentry.offset == 0 || newentry.length > entry->length) newentry.offset = core_fsize(chd->file); /* write the data */ core_fseek(chd->file, newentry.offset, SEEK_SET); bytes = core_fwrite(chd->file, data, newentry.length); if (bytes != newentry.length) return CHDERR_WRITE_ERROR; /* update the entry in memory */ write_entry: *entry = newentry; /* update the map on file */ map_assemble(&fileentry[0], &chd->map[hunknum]); core_fseek(chd->file, chd->header.length + hunknum * sizeof(fileentry), SEEK_SET); bytes = core_fwrite(chd->file, &fileentry[0], sizeof(fileentry)); if (bytes != sizeof(fileentry)) return CHDERR_WRITE_ERROR; return CHDERR_NONE; }
/*------------------------------------------------- hunk_write_from_memory - write a hunk from memory into a CHD -------------------------------------------------*/
write a hunk from memory into a CHD
[ "write", "a", "hunk", "from", "memory", "into", "a", "CHD" ]
static chd_error hunk_write_from_memory(chd_file *chd, UINT32 hunknum, const UINT8 *src) { map_entry *entry = &chd->map[hunknum]; map_entry newentry; UINT8 fileentry[MAP_ENTRY_SIZE]; const void *data = src; UINT32 bytes = 0, match; chd_error err; if (hunknum > chd->maxhunk) chd->maxhunk = hunknum; newentry.crc = 0; if (src != NULL) newentry.crc = crc32(0, &src[0], chd->header.hunkbytes); if (!chd->codecintf->lossy && src != NULL) { if (chd->header.compression >= CHDCOMPRESSION_ZLIB_PLUS) { for (bytes = 8; bytes < chd->header.hunkbytes; bytes++) if (src[bytes] != src[bytes - 8]) break; if (bytes == chd->header.hunkbytes) { newentry.offset = get_bigendian_uint64(&src[0]); newentry.length = 0; newentry.flags = MAP_ENTRY_TYPE_MINI; goto write_entry; } match = crcmap_find_hunk(chd, hunknum, newentry.crc, &src[0]); if (match != NO_MATCH) { newentry.offset = match; newentry.length = 0; newentry.flags = MAP_ENTRY_TYPE_SELF_HUNK; goto write_entry; } if (chd->header.flags & CHDFLAGS_HAS_PARENT) { match = crcmap_find_hunk(chd->parent, ~0, newentry.crc, &src[0]); if (match != NO_MATCH) { newentry.offset = match; newentry.length = 0; newentry.flags = MAP_ENTRY_TYPE_PARENT_HUNK; goto write_entry; } } } } err = CHDERR_COMPRESSION_ERROR; if (chd->codecintf->compress != NULL) err = (*chd->codecintf->compress)(chd, src, &bytes); if (err == CHDERR_NONE && (chd->codecintf->lossy || src == NULL)) { err = (*chd->codecintf->decompress)(chd, bytes, chd->cache); if (err == CHDERR_NONE) newentry.crc = crc32(0, chd->cache, chd->header.hunkbytes); } if (err == CHDERR_NONE) { data = chd->compressed; newentry.length = bytes; newentry.flags = MAP_ENTRY_TYPE_COMPRESSED; } else { newentry.length = chd->header.hunkbytes; newentry.flags = MAP_ENTRY_TYPE_UNCOMPRESSED; } newentry.offset = entry->offset; if (newentry.offset == 0 || newentry.length > entry->length) newentry.offset = core_fsize(chd->file); core_fseek(chd->file, newentry.offset, SEEK_SET); bytes = core_fwrite(chd->file, data, newentry.length); if (bytes != newentry.length) return CHDERR_WRITE_ERROR; write_entry: *entry = newentry; map_assemble(&fileentry[0], &chd->map[hunknum]); core_fseek(chd->file, chd->header.length + hunknum * sizeof(fileentry), SEEK_SET); bytes = core_fwrite(chd->file, &fileentry[0], sizeof(fileentry)); if (bytes != sizeof(fileentry)) return CHDERR_WRITE_ERROR; return CHDERR_NONE; }
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hunk_write_from_memory - write a hunk from memory into a CHD
[ "hunk_write_from_memory", "-", "write", "a", "hunk", "from", "memory", "into", "a", "CHD" ]
[ "/* track the max */", "/* first compute the CRC of the original data */", "/* if we're not a lossy codec, compute the CRC and look for matches */", "/* some extra stuff for zlib+ compression */", "/* see if we can mini-compress first */", "/* if so, we don't need to write any data */", "/* otherwise, see if we can find a match in the current file */", "/* if we have a parent, see if we can find a match in there */", "/* now try compressing the data */", "/* if that worked, and we're lossy, decompress and CRC the result */", "/* if we succeeded in compressing the data, replace our data pointer and mark it so */", "/* otherwise, mark it uncompressed and use the original data */", "/* if the data doesn't fit into the previous entry, make a new one at the eof */", "/* write the data */", "/* update the entry in memory */", "/* update the map on file */" ]
[ { "param": "chd", "type": "chd_file" }, { "param": "hunknum", "type": "UINT32" }, { "param": "src", "type": "UINT8" } ]
{ "returns": [], "raises": [], "params": [ { "identifier": "chd", "type": "chd_file", "docstring": null, "docstring_tokens": [], "default": null, "is_optional": null }, { "identifier": "hunknum", "type": "UINT32", "docstring": null, "docstring_tokens": [], "default": null, "is_optional": null }, { "identifier": "src", "type": "UINT8", "docstring": null, "docstring_tokens": [], "default": null, "is_optional": null } ], "outlier_params": [], "others": [] }
de1516c83d91cc3a04aa5401f52c2a975d90a0d4
lofunz/mieme
Reloaded/tags/MAME4droid.Reloaded.1.0.WIP/src/lib/util/chd.c
[ "Unlicense" ]
C
map_write_initial
chd_error
static chd_error map_write_initial(core_file *file, chd_file *parent, const chd_header *header) { UINT8 blank_map_entries[MAP_STACK_ENTRIES * MAP_ENTRY_SIZE]; int fullchunks, remainder, count, i, j; map_entry mapentry; UINT64 fileoffset; /* create a mini hunk of 0's */ mapentry.offset = 0; mapentry.crc = 0; mapentry.length = 0; mapentry.flags = MAP_ENTRY_TYPE_MINI | MAP_ENTRY_FLAG_NO_CRC; for (i = 0; i < MAP_STACK_ENTRIES; i++) map_assemble(&blank_map_entries[i * MAP_ENTRY_SIZE], &mapentry); /* prepare to write a blank hunk map immediately following */ fileoffset = header->length; fullchunks = header->totalhunks / MAP_STACK_ENTRIES; remainder = header->totalhunks % MAP_STACK_ENTRIES; /* first write full chunks of blank entries */ for (i = 0; i < fullchunks; i++) { /* parent drives need to be mapped through */ if (parent != NULL) for (j = 0; j < MAP_STACK_ENTRIES; j++) { mapentry.offset = i * MAP_STACK_ENTRIES + j; mapentry.crc = parent->map[i * MAP_STACK_ENTRIES + j].crc; mapentry.flags = MAP_ENTRY_TYPE_PARENT_HUNK; map_assemble(&blank_map_entries[j * MAP_ENTRY_SIZE], &mapentry); } /* write the chunks */ core_fseek(file, fileoffset, SEEK_SET); count = core_fwrite(file, blank_map_entries, sizeof(blank_map_entries)); if (count != sizeof(blank_map_entries)) return CHDERR_WRITE_ERROR; fileoffset += sizeof(blank_map_entries); } /* then write the remainder */ if (remainder > 0) { /* parent drives need to be mapped through */ if (parent != NULL) for (j = 0; j < remainder; j++) { mapentry.offset = i * MAP_STACK_ENTRIES + j; mapentry.crc = parent->map[i * MAP_STACK_ENTRIES + j].crc; mapentry.flags = MAP_ENTRY_TYPE_PARENT_HUNK; map_assemble(&blank_map_entries[j * MAP_ENTRY_SIZE], &mapentry); } /* write the chunks */ core_fseek(file, fileoffset, SEEK_SET); count = core_fwrite(file, blank_map_entries, remainder * MAP_ENTRY_SIZE); if (count != remainder * MAP_ENTRY_SIZE) return CHDERR_WRITE_ERROR; fileoffset += remainder * MAP_ENTRY_SIZE; } /* then write a special end-of-list cookie */ memcpy(&blank_map_entries[0], END_OF_LIST_COOKIE, MAP_ENTRY_SIZE); core_fseek(file, fileoffset, SEEK_SET); count = core_fwrite(file, blank_map_entries, MAP_ENTRY_SIZE); if (count != MAP_ENTRY_SIZE) return CHDERR_WRITE_ERROR; return CHDERR_NONE; }
/*------------------------------------------------- map_write_initial - write an initial map to a new CHD file -------------------------------------------------*/
write an initial map to a new CHD file
[ "write", "an", "initial", "map", "to", "a", "new", "CHD", "file" ]
static chd_error map_write_initial(core_file *file, chd_file *parent, const chd_header *header) { UINT8 blank_map_entries[MAP_STACK_ENTRIES * MAP_ENTRY_SIZE]; int fullchunks, remainder, count, i, j; map_entry mapentry; UINT64 fileoffset; mapentry.offset = 0; mapentry.crc = 0; mapentry.length = 0; mapentry.flags = MAP_ENTRY_TYPE_MINI | MAP_ENTRY_FLAG_NO_CRC; for (i = 0; i < MAP_STACK_ENTRIES; i++) map_assemble(&blank_map_entries[i * MAP_ENTRY_SIZE], &mapentry); fileoffset = header->length; fullchunks = header->totalhunks / MAP_STACK_ENTRIES; remainder = header->totalhunks % MAP_STACK_ENTRIES; for (i = 0; i < fullchunks; i++) { if (parent != NULL) for (j = 0; j < MAP_STACK_ENTRIES; j++) { mapentry.offset = i * MAP_STACK_ENTRIES + j; mapentry.crc = parent->map[i * MAP_STACK_ENTRIES + j].crc; mapentry.flags = MAP_ENTRY_TYPE_PARENT_HUNK; map_assemble(&blank_map_entries[j * MAP_ENTRY_SIZE], &mapentry); } core_fseek(file, fileoffset, SEEK_SET); count = core_fwrite(file, blank_map_entries, sizeof(blank_map_entries)); if (count != sizeof(blank_map_entries)) return CHDERR_WRITE_ERROR; fileoffset += sizeof(blank_map_entries); } if (remainder > 0) { if (parent != NULL) for (j = 0; j < remainder; j++) { mapentry.offset = i * MAP_STACK_ENTRIES + j; mapentry.crc = parent->map[i * MAP_STACK_ENTRIES + j].crc; mapentry.flags = MAP_ENTRY_TYPE_PARENT_HUNK; map_assemble(&blank_map_entries[j * MAP_ENTRY_SIZE], &mapentry); } core_fseek(file, fileoffset, SEEK_SET); count = core_fwrite(file, blank_map_entries, remainder * MAP_ENTRY_SIZE); if (count != remainder * MAP_ENTRY_SIZE) return CHDERR_WRITE_ERROR; fileoffset += remainder * MAP_ENTRY_SIZE; } memcpy(&blank_map_entries[0], END_OF_LIST_COOKIE, MAP_ENTRY_SIZE); core_fseek(file, fileoffset, SEEK_SET); count = core_fwrite(file, blank_map_entries, MAP_ENTRY_SIZE); if (count != MAP_ENTRY_SIZE) return CHDERR_WRITE_ERROR; return CHDERR_NONE; }
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map_write_initial - write an initial map to a new CHD file
[ "map_write_initial", "-", "write", "an", "initial", "map", "to", "a", "new", "CHD", "file" ]
[ "/* create a mini hunk of 0's */", "/* prepare to write a blank hunk map immediately following */", "/* first write full chunks of blank entries */", "/* parent drives need to be mapped through */", "/* write the chunks */", "/* then write the remainder */", "/* parent drives need to be mapped through */", "/* write the chunks */", "/* then write a special end-of-list cookie */" ]
[ { "param": "file", "type": "core_file" }, { "param": "parent", "type": "chd_file" }, { "param": "header", "type": "chd_header" } ]
{ "returns": [], "raises": [], "params": [ { "identifier": "file", "type": "core_file", "docstring": null, "docstring_tokens": [], "default": null, "is_optional": null }, { "identifier": "parent", "type": "chd_file", "docstring": null, "docstring_tokens": [], "default": null, "is_optional": null }, { "identifier": "header", "type": "chd_header", "docstring": null, "docstring_tokens": [], "default": null, "is_optional": null } ], "outlier_params": [], "others": [] }
de1516c83d91cc3a04aa5401f52c2a975d90a0d4
lofunz/mieme
Reloaded/tags/MAME4droid.Reloaded.1.0.WIP/src/lib/util/chd.c
[ "Unlicense" ]
C
crcmap_verify_hunk_match
int
static int crcmap_verify_hunk_match(chd_file *chd, UINT32 hunknum, const UINT8 *rawdata) { /* we have a potential match -- better be sure */ /* read the hunk from disk and compare byte-for-byte */ if (hunknum != chd->comparehunk) { chd->comparehunk = ~0; if (hunk_read_into_memory(chd, hunknum, chd->compare) == CHDERR_NONE) chd->comparehunk = hunknum; } return (hunknum == chd->comparehunk && memcmp(rawdata, chd->compare, chd->header.hunkbytes) == 0); }
/*------------------------------------------------- crcmap_verify_hunk_match - verify that a hunk really matches by doing a byte-for-byte compare -------------------------------------------------*/
verify that a hunk really matches by doing a byte-for-byte compare
[ "verify", "that", "a", "hunk", "really", "matches", "by", "doing", "a", "byte", "-", "for", "-", "byte", "compare" ]
static int crcmap_verify_hunk_match(chd_file *chd, UINT32 hunknum, const UINT8 *rawdata) { if (hunknum != chd->comparehunk) { chd->comparehunk = ~0; if (hunk_read_into_memory(chd, hunknum, chd->compare) == CHDERR_NONE) chd->comparehunk = hunknum; } return (hunknum == chd->comparehunk && memcmp(rawdata, chd->compare, chd->header.hunkbytes) == 0); }
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crcmap_verify_hunk_match - verify that a hunk really matches by doing a byte-for-byte compare
[ "crcmap_verify_hunk_match", "-", "verify", "that", "a", "hunk", "really", "matches", "by", "doing", "a", "byte", "-", "for", "-", "byte", "compare" ]
[ "/* we have a potential match -- better be sure */", "/* read the hunk from disk and compare byte-for-byte */" ]
[ { "param": "chd", "type": "chd_file" }, { "param": "hunknum", "type": "UINT32" }, { "param": "rawdata", "type": "UINT8" } ]
{ "returns": [], "raises": [], "params": [ { "identifier": "chd", "type": "chd_file", "docstring": null, "docstring_tokens": [], "default": null, "is_optional": null }, { "identifier": "hunknum", "type": "UINT32", "docstring": null, "docstring_tokens": [], "default": null, "is_optional": null }, { "identifier": "rawdata", "type": "UINT8", "docstring": null, "docstring_tokens": [], "default": null, "is_optional": null } ], "outlier_params": [], "others": [] }
de1516c83d91cc3a04aa5401f52c2a975d90a0d4
lofunz/mieme
Reloaded/tags/MAME4droid.Reloaded.1.0.WIP/src/lib/util/chd.c
[ "Unlicense" ]
C
crcmap_find_hunk
UINT32
static UINT32 crcmap_find_hunk(chd_file *chd, UINT32 hunknum, UINT32 crc, const UINT8 *rawdata) { UINT32 lasthunk = (hunknum < chd->header.totalhunks) ? hunknum : chd->header.totalhunks; int curhunk; /* if we have a CRC map, use that */ if (chd->crctable) { crcmap_entry *curentry; for (curentry = chd->crctable[crc % CRCMAP_HASH_SIZE]; curentry; curentry = curentry->next) { curhunk = curentry->hunknum; if (chd->map[curhunk].crc == crc && !(chd->map[curhunk].flags & MAP_ENTRY_FLAG_NO_CRC) && crcmap_verify_hunk_match(chd, curhunk, rawdata)) return curhunk; } return NO_MATCH; } /* first see if the last match is a valid one */ if (chd->comparehunk < chd->header.totalhunks && chd->map[chd->comparehunk].crc == crc && !(chd->map[chd->comparehunk].flags & MAP_ENTRY_FLAG_NO_CRC) && memcmp(rawdata, chd->compare, chd->header.hunkbytes) == 0) return chd->comparehunk; /* scan through the CHD's hunk map looking for a match */ for (curhunk = 0; curhunk < lasthunk; curhunk++) if (chd->map[curhunk].crc == crc && !(chd->map[curhunk].flags & MAP_ENTRY_FLAG_NO_CRC) && crcmap_verify_hunk_match(chd, curhunk, rawdata)) return curhunk; return NO_MATCH; }
/*------------------------------------------------- crcmap_find_hunk - find a hunk with a matching CRC in the map -------------------------------------------------*/
find a hunk with a matching CRC in the map
[ "find", "a", "hunk", "with", "a", "matching", "CRC", "in", "the", "map" ]
static UINT32 crcmap_find_hunk(chd_file *chd, UINT32 hunknum, UINT32 crc, const UINT8 *rawdata) { UINT32 lasthunk = (hunknum < chd->header.totalhunks) ? hunknum : chd->header.totalhunks; int curhunk; if (chd->crctable) { crcmap_entry *curentry; for (curentry = chd->crctable[crc % CRCMAP_HASH_SIZE]; curentry; curentry = curentry->next) { curhunk = curentry->hunknum; if (chd->map[curhunk].crc == crc && !(chd->map[curhunk].flags & MAP_ENTRY_FLAG_NO_CRC) && crcmap_verify_hunk_match(chd, curhunk, rawdata)) return curhunk; } return NO_MATCH; } if (chd->comparehunk < chd->header.totalhunks && chd->map[chd->comparehunk].crc == crc && !(chd->map[chd->comparehunk].flags & MAP_ENTRY_FLAG_NO_CRC) && memcmp(rawdata, chd->compare, chd->header.hunkbytes) == 0) return chd->comparehunk; for (curhunk = 0; curhunk < lasthunk; curhunk++) if (chd->map[curhunk].crc == crc && !(chd->map[curhunk].flags & MAP_ENTRY_FLAG_NO_CRC) && crcmap_verify_hunk_match(chd, curhunk, rawdata)) return curhunk; return NO_MATCH; }
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crcmap_find_hunk - find a hunk with a matching CRC in the map
[ "crcmap_find_hunk", "-", "find", "a", "hunk", "with", "a", "matching", "CRC", "in", "the", "map" ]
[ "/* if we have a CRC map, use that */", "/* first see if the last match is a valid one */", "/* scan through the CHD's hunk map looking for a match */" ]
[ { "param": "chd", "type": "chd_file" }, { "param": "hunknum", "type": "UINT32" }, { "param": "crc", "type": "UINT32" }, { "param": "rawdata", "type": "UINT8" } ]
{ "returns": [], "raises": [], "params": [ { "identifier": "chd", "type": "chd_file", "docstring": null, "docstring_tokens": [], "default": null, "is_optional": null }, { "identifier": "hunknum", "type": "UINT32", "docstring": null, "docstring_tokens": [], "default": null, "is_optional": null }, { "identifier": "crc", "type": "UINT32", "docstring": null, "docstring_tokens": [], "default": null, "is_optional": null }, { "identifier": "rawdata", "type": "UINT8", "docstring": null, "docstring_tokens": [], "default": null, "is_optional": null } ], "outlier_params": [], "others": [] }
de1516c83d91cc3a04aa5401f52c2a975d90a0d4
lofunz/mieme
Reloaded/tags/MAME4droid.Reloaded.1.0.WIP/src/lib/util/chd.c
[ "Unlicense" ]
C
metadata_set_previous_next
chd_error
static chd_error metadata_set_previous_next(chd_file *chd, UINT64 prevoffset, UINT64 nextoffset) { UINT8 raw_meta_header[METADATA_HEADER_SIZE]; chd_error err; UINT32 count; /* if we were the first entry, make the next entry the first */ if (prevoffset == 0) { chd->header.metaoffset = nextoffset; err = header_write(chd->file, &chd->header); if (err != CHDERR_NONE) return err; } /* otherwise, update the link in the previous pointer */ else { /* read the previous raw header */ core_fseek(chd->file, prevoffset, SEEK_SET); count = core_fread(chd->file, raw_meta_header, sizeof(raw_meta_header)); if (count != sizeof(raw_meta_header)) return CHDERR_READ_ERROR; /* copy our next pointer into the previous->next offset */ put_bigendian_uint64(&raw_meta_header[8], nextoffset); /* write the previous raw header */ core_fseek(chd->file, prevoffset, SEEK_SET); count = core_fwrite(chd->file, raw_meta_header, sizeof(raw_meta_header)); if (count != sizeof(raw_meta_header)) return CHDERR_WRITE_ERROR; } return CHDERR_NONE; }
/*------------------------------------------------- metadata_set_previous_next - set the 'next' offset of a piece of metadata -------------------------------------------------*/
set the 'next' offset of a piece of metadata
[ "set", "the", "'", "next", "'", "offset", "of", "a", "piece", "of", "metadata" ]
static chd_error metadata_set_previous_next(chd_file *chd, UINT64 prevoffset, UINT64 nextoffset) { UINT8 raw_meta_header[METADATA_HEADER_SIZE]; chd_error err; UINT32 count; if (prevoffset == 0) { chd->header.metaoffset = nextoffset; err = header_write(chd->file, &chd->header); if (err != CHDERR_NONE) return err; } else { core_fseek(chd->file, prevoffset, SEEK_SET); count = core_fread(chd->file, raw_meta_header, sizeof(raw_meta_header)); if (count != sizeof(raw_meta_header)) return CHDERR_READ_ERROR; put_bigendian_uint64(&raw_meta_header[8], nextoffset); core_fseek(chd->file, prevoffset, SEEK_SET); count = core_fwrite(chd->file, raw_meta_header, sizeof(raw_meta_header)); if (count != sizeof(raw_meta_header)) return CHDERR_WRITE_ERROR; } return CHDERR_NONE; }
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metadata_set_previous_next - set the 'next' offset of a piece of metadata
[ "metadata_set_previous_next", "-", "set", "the", "'", "next", "'", "offset", "of", "a", "piece", "of", "metadata" ]
[ "/* if we were the first entry, make the next entry the first */", "/* otherwise, update the link in the previous pointer */", "/* read the previous raw header */", "/* copy our next pointer into the previous->next offset */", "/* write the previous raw header */" ]
[ { "param": "chd", "type": "chd_file" }, { "param": "prevoffset", "type": "UINT64" }, { "param": "nextoffset", "type": "UINT64" } ]
{ "returns": [], "raises": [], "params": [ { "identifier": "chd", "type": "chd_file", "docstring": null, "docstring_tokens": [], "default": null, "is_optional": null }, { "identifier": "prevoffset", "type": "UINT64", "docstring": null, "docstring_tokens": [], "default": null, "is_optional": null }, { "identifier": "nextoffset", "type": "UINT64", "docstring": null, "docstring_tokens": [], "default": null, "is_optional": null } ], "outlier_params": [], "others": [] }
de1516c83d91cc3a04aa5401f52c2a975d90a0d4
lofunz/mieme
Reloaded/tags/MAME4droid.Reloaded.1.0.WIP/src/lib/util/chd.c
[ "Unlicense" ]
C
metadata_set_length
chd_error
static chd_error metadata_set_length(chd_file *chd, UINT64 offset, UINT32 length) { UINT8 raw_meta_header[METADATA_HEADER_SIZE]; UINT32 oldlength; UINT32 count; /* read the raw header */ core_fseek(chd->file, offset, SEEK_SET); count = core_fread(chd->file, raw_meta_header, sizeof(raw_meta_header)); if (count != sizeof(raw_meta_header)) return CHDERR_READ_ERROR; /* update the length at offset 4, preserving the flags in the upper byte */ oldlength = get_bigendian_uint32(&raw_meta_header[4]); length = (length & 0x00ffffff) | (oldlength & 0xff000000); put_bigendian_uint32(&raw_meta_header[4], length); /* write the raw header */ core_fseek(chd->file, offset, SEEK_SET); count = core_fwrite(chd->file, raw_meta_header, sizeof(raw_meta_header)); if (count != sizeof(raw_meta_header)) return CHDERR_WRITE_ERROR; return CHDERR_NONE; }
/*------------------------------------------------- metadata_set_length - set the length field of a piece of metadata -------------------------------------------------*/
set the length field of a piece of metadata
[ "set", "the", "length", "field", "of", "a", "piece", "of", "metadata" ]
static chd_error metadata_set_length(chd_file *chd, UINT64 offset, UINT32 length) { UINT8 raw_meta_header[METADATA_HEADER_SIZE]; UINT32 oldlength; UINT32 count; core_fseek(chd->file, offset, SEEK_SET); count = core_fread(chd->file, raw_meta_header, sizeof(raw_meta_header)); if (count != sizeof(raw_meta_header)) return CHDERR_READ_ERROR; oldlength = get_bigendian_uint32(&raw_meta_header[4]); length = (length & 0x00ffffff) | (oldlength & 0xff000000); put_bigendian_uint32(&raw_meta_header[4], length); core_fseek(chd->file, offset, SEEK_SET); count = core_fwrite(chd->file, raw_meta_header, sizeof(raw_meta_header)); if (count != sizeof(raw_meta_header)) return CHDERR_WRITE_ERROR; return CHDERR_NONE; }
[ "static", "chd_error", "metadata_set_length", "(", "chd_file", "*", "chd", ",", "UINT64", "offset", ",", "UINT32", "length", ")", "{", "UINT8", "raw_meta_header", "[", "METADATA_HEADER_SIZE", "]", ";", "UINT32", "oldlength", ";", "UINT32", "count", ";", "core_fseek", "(", "chd", "->", "file", ",", "offset", ",", "SEEK_SET", ")", ";", "count", "=", "core_fread", "(", "chd", "->", "file", ",", "raw_meta_header", ",", "sizeof", "(", "raw_meta_header", ")", ")", ";", "if", "(", "count", "!=", "sizeof", "(", "raw_meta_header", ")", ")", "return", "CHDERR_READ_ERROR", ";", "oldlength", "=", "get_bigendian_uint32", "(", "&", "raw_meta_header", "[", "4", "]", ")", ";", "length", "=", "(", "length", "&", "0x00ffffff", ")", "|", "(", "oldlength", "&", "0xff000000", ")", ";", "put_bigendian_uint32", "(", "&", "raw_meta_header", "[", "4", "]", ",", "length", ")", ";", "core_fseek", "(", "chd", "->", "file", ",", "offset", ",", "SEEK_SET", ")", ";", "count", "=", "core_fwrite", "(", "chd", "->", "file", ",", "raw_meta_header", ",", "sizeof", "(", "raw_meta_header", ")", ")", ";", "if", "(", "count", "!=", "sizeof", "(", "raw_meta_header", ")", ")", "return", "CHDERR_WRITE_ERROR", ";", "return", "CHDERR_NONE", ";", "}" ]
metadata_set_length - set the length field of a piece of metadata
[ "metadata_set_length", "-", "set", "the", "length", "field", "of", "a", "piece", "of", "metadata" ]
[ "/* read the raw header */", "/* update the length at offset 4, preserving the flags in the upper byte */", "/* write the raw header */" ]
[ { "param": "chd", "type": "chd_file" }, { "param": "offset", "type": "UINT64" }, { "param": "length", "type": "UINT32" } ]
{ "returns": [], "raises": [], "params": [ { "identifier": "chd", "type": "chd_file", "docstring": null, "docstring_tokens": [], "default": null, "is_optional": null }, { "identifier": "offset", "type": "UINT64", "docstring": null, "docstring_tokens": [], "default": null, "is_optional": null }, { "identifier": "length", "type": "UINT32", "docstring": null, "docstring_tokens": [], "default": null, "is_optional": null } ], "outlier_params": [], "others": [] }
de1516c83d91cc3a04aa5401f52c2a975d90a0d4
lofunz/mieme
Reloaded/tags/MAME4droid.Reloaded.1.0.WIP/src/lib/util/chd.c
[ "Unlicense" ]
C
metadata_compute_hash
chd_error
static chd_error metadata_compute_hash(chd_file *chd, const UINT8 *rawsha1, UINT8 *finalsha1) { metadata_hash *hasharray = NULL; chd_error err = CHDERR_NONE; struct sha1_ctx sha1; UINT32 hashindex = 0; UINT32 hashalloc = 0; UINT64 offset, next; /* only works for V4 and above */ if (chd->header.version < 4) { memcpy(finalsha1, rawsha1, SHA1_DIGEST_SIZE); return CHDERR_NONE; } /* loop until we run out of data */ for (offset = chd->header.metaoffset; offset != 0; offset = next) { UINT8 raw_meta_header[METADATA_HEADER_SIZE]; UINT32 count, metalength, metatag; UINT8 *tempbuffer; UINT8 metaflags; /* read the raw header */ core_fseek(chd->file, offset, SEEK_SET); count = core_fread(chd->file, raw_meta_header, sizeof(raw_meta_header)); if (count != sizeof(raw_meta_header)) break; /* extract the data */ metatag = get_bigendian_uint32(&raw_meta_header[0]); metalength = get_bigendian_uint32(&raw_meta_header[4]); next = get_bigendian_uint64(&raw_meta_header[8]); /* flags are encoded in the high byte of length */ metaflags = metalength >> 24; metalength &= 0x00ffffff; /* if not checksumming, continue */ if (!(metaflags & CHD_MDFLAGS_CHECKSUM)) continue; /* allocate memory */ tempbuffer = (UINT8 *)malloc(metalength); if (tempbuffer == NULL) { err = CHDERR_OUT_OF_MEMORY; goto cleanup; } /* seek and read the metadata */ core_fseek(chd->file, offset + METADATA_HEADER_SIZE, SEEK_SET); count = core_fread(chd->file, tempbuffer, metalength); if (count != metalength) { free(tempbuffer); err = CHDERR_READ_ERROR; goto cleanup; } /* compute this entry's hash */ sha1_init(&sha1); sha1_update(&sha1, metalength, tempbuffer); sha1_final(&sha1); free(tempbuffer); /* expand the hasharray if necessary */ if (hashindex >= hashalloc) { hashalloc += 256; hasharray = (metadata_hash *)realloc(hasharray, hashalloc * sizeof(hasharray[0])); if (hasharray == NULL) { err = CHDERR_OUT_OF_MEMORY; goto cleanup; } } /* fill in the entry */ put_bigendian_uint32(hasharray[hashindex].tag, metatag); sha1_digest(&sha1, SHA1_DIGEST_SIZE, hasharray[hashindex].sha1); hashindex++; } /* sort the array */ qsort(hasharray, hashindex, sizeof(hasharray[0]), metadata_hash_compare); /* compute the SHA1 of the raw plus the various metadata */ sha1_init(&sha1); sha1_update(&sha1, CHD_SHA1_BYTES, rawsha1); sha1_update(&sha1, hashindex * sizeof(hasharray[0]), (const UINT8 *)hasharray); sha1_final(&sha1); sha1_digest(&sha1, SHA1_DIGEST_SIZE, finalsha1); cleanup: if (hasharray != NULL) free(hasharray); return err; }
/*------------------------------------------------- metadata_compute_hash - compute the SHA1 hash of all metadata that requests it -------------------------------------------------*/
compute the SHA1 hash of all metadata that requests it
[ "compute", "the", "SHA1", "hash", "of", "all", "metadata", "that", "requests", "it" ]
static chd_error metadata_compute_hash(chd_file *chd, const UINT8 *rawsha1, UINT8 *finalsha1) { metadata_hash *hasharray = NULL; chd_error err = CHDERR_NONE; struct sha1_ctx sha1; UINT32 hashindex = 0; UINT32 hashalloc = 0; UINT64 offset, next; if (chd->header.version < 4) { memcpy(finalsha1, rawsha1, SHA1_DIGEST_SIZE); return CHDERR_NONE; } for (offset = chd->header.metaoffset; offset != 0; offset = next) { UINT8 raw_meta_header[METADATA_HEADER_SIZE]; UINT32 count, metalength, metatag; UINT8 *tempbuffer; UINT8 metaflags; core_fseek(chd->file, offset, SEEK_SET); count = core_fread(chd->file, raw_meta_header, sizeof(raw_meta_header)); if (count != sizeof(raw_meta_header)) break; metatag = get_bigendian_uint32(&raw_meta_header[0]); metalength = get_bigendian_uint32(&raw_meta_header[4]); next = get_bigendian_uint64(&raw_meta_header[8]); metaflags = metalength >> 24; metalength &= 0x00ffffff; if (!(metaflags & CHD_MDFLAGS_CHECKSUM)) continue; tempbuffer = (UINT8 *)malloc(metalength); if (tempbuffer == NULL) { err = CHDERR_OUT_OF_MEMORY; goto cleanup; } core_fseek(chd->file, offset + METADATA_HEADER_SIZE, SEEK_SET); count = core_fread(chd->file, tempbuffer, metalength); if (count != metalength) { free(tempbuffer); err = CHDERR_READ_ERROR; goto cleanup; } sha1_init(&sha1); sha1_update(&sha1, metalength, tempbuffer); sha1_final(&sha1); free(tempbuffer); if (hashindex >= hashalloc) { hashalloc += 256; hasharray = (metadata_hash *)realloc(hasharray, hashalloc * sizeof(hasharray[0])); if (hasharray == NULL) { err = CHDERR_OUT_OF_MEMORY; goto cleanup; } } put_bigendian_uint32(hasharray[hashindex].tag, metatag); sha1_digest(&sha1, SHA1_DIGEST_SIZE, hasharray[hashindex].sha1); hashindex++; } qsort(hasharray, hashindex, sizeof(hasharray[0]), metadata_hash_compare); sha1_init(&sha1); sha1_update(&sha1, CHD_SHA1_BYTES, rawsha1); sha1_update(&sha1, hashindex * sizeof(hasharray[0]), (const UINT8 *)hasharray); sha1_final(&sha1); sha1_digest(&sha1, SHA1_DIGEST_SIZE, finalsha1); cleanup: if (hasharray != NULL) free(hasharray); return err; }
[ "static", "chd_error", "metadata_compute_hash", "(", "chd_file", "*", "chd", ",", "const", "UINT8", "*", "rawsha1", ",", "UINT8", "*", "finalsha1", ")", "{", "metadata_hash", "*", "hasharray", "=", "NULL", ";", "chd_error", "err", "=", "CHDERR_NONE", ";", "struct", "sha1_ctx", "sha1", ";", "UINT32", "hashindex", "=", "0", ";", "UINT32", "hashalloc", "=", "0", ";", "UINT64", "offset", ",", "next", ";", "if", "(", "chd", "->", "header", ".", "version", "<", "4", ")", "{", "memcpy", "(", "finalsha1", ",", "rawsha1", ",", "SHA1_DIGEST_SIZE", ")", ";", "return", "CHDERR_NONE", ";", "}", "for", "(", "offset", "=", "chd", "->", "header", ".", "metaoffset", ";", "offset", "!=", "0", ";", "offset", "=", "next", ")", "{", "UINT8", "raw_meta_header", "[", "METADATA_HEADER_SIZE", "]", ";", "UINT32", "count", ",", "metalength", ",", "metatag", ";", "UINT8", "*", "tempbuffer", ";", "UINT8", "metaflags", ";", "core_fseek", "(", "chd", "->", "file", ",", "offset", ",", "SEEK_SET", ")", ";", "count", "=", "core_fread", "(", "chd", "->", "file", ",", "raw_meta_header", ",", "sizeof", "(", "raw_meta_header", ")", ")", ";", "if", "(", "count", "!=", "sizeof", "(", "raw_meta_header", ")", ")", "break", ";", "metatag", "=", "get_bigendian_uint32", "(", "&", "raw_meta_header", "[", "0", "]", ")", ";", "metalength", "=", "get_bigendian_uint32", "(", "&", "raw_meta_header", "[", "4", "]", ")", ";", "next", "=", "get_bigendian_uint64", "(", "&", "raw_meta_header", "[", "8", "]", ")", ";", "metaflags", "=", "metalength", ">>", "24", ";", "metalength", "&=", "0x00ffffff", ";", "if", "(", "!", "(", "metaflags", "&", "CHD_MDFLAGS_CHECKSUM", ")", ")", "continue", ";", "tempbuffer", "=", "(", "UINT8", "*", ")", "malloc", "(", "metalength", ")", ";", "if", "(", "tempbuffer", "==", "NULL", ")", "{", "err", "=", "CHDERR_OUT_OF_MEMORY", ";", "goto", "cleanup", ";", "}", "core_fseek", "(", "chd", "->", "file", ",", "offset", "+", "METADATA_HEADER_SIZE", ",", "SEEK_SET", ")", ";", "count", "=", "core_fread", "(", "chd", "->", "file", ",", "tempbuffer", ",", "metalength", ")", ";", "if", "(", "count", "!=", "metalength", ")", "{", "free", "(", "tempbuffer", ")", ";", "err", "=", "CHDERR_READ_ERROR", ";", "goto", "cleanup", ";", "}", "sha1_init", "(", "&", "sha1", ")", ";", "sha1_update", "(", "&", "sha1", ",", "metalength", ",", "tempbuffer", ")", ";", "sha1_final", "(", "&", "sha1", ")", ";", "free", "(", "tempbuffer", ")", ";", "if", "(", "hashindex", ">=", "hashalloc", ")", "{", "hashalloc", "+=", "256", ";", "hasharray", "=", "(", "metadata_hash", "*", ")", "realloc", "(", "hasharray", ",", "hashalloc", "*", "sizeof", "(", "hasharray", "[", "0", "]", ")", ")", ";", "if", "(", "hasharray", "==", "NULL", ")", "{", "err", "=", "CHDERR_OUT_OF_MEMORY", ";", "goto", "cleanup", ";", "}", "}", "put_bigendian_uint32", "(", "hasharray", "[", "hashindex", "]", ".", "tag", ",", "metatag", ")", ";", "sha1_digest", "(", "&", "sha1", ",", "SHA1_DIGEST_SIZE", ",", "hasharray", "[", "hashindex", "]", ".", "sha1", ")", ";", "hashindex", "++", ";", "}", "qsort", "(", "hasharray", ",", "hashindex", ",", "sizeof", "(", "hasharray", "[", "0", "]", ")", ",", "metadata_hash_compare", ")", ";", "sha1_init", "(", "&", "sha1", ")", ";", "sha1_update", "(", "&", "sha1", ",", "CHD_SHA1_BYTES", ",", "rawsha1", ")", ";", "sha1_update", "(", "&", "sha1", ",", "hashindex", "*", "sizeof", "(", "hasharray", "[", "0", "]", ")", ",", "(", "const", "UINT8", "*", ")", "hasharray", ")", ";", "sha1_final", "(", "&", "sha1", ")", ";", "sha1_digest", "(", "&", "sha1", ",", "SHA1_DIGEST_SIZE", ",", "finalsha1", ")", ";", "cleanup", ":", "if", "(", "hasharray", "!=", "NULL", ")", "free", "(", "hasharray", ")", ";", "return", "err", ";", "}" ]
metadata_compute_hash - compute the SHA1 hash of all metadata that requests it
[ "metadata_compute_hash", "-", "compute", "the", "SHA1", "hash", "of", "all", "metadata", "that", "requests", "it" ]
[ "/* only works for V4 and above */", "/* loop until we run out of data */", "/* read the raw header */", "/* extract the data */", "/* flags are encoded in the high byte of length */", "/* if not checksumming, continue */", "/* allocate memory */", "/* seek and read the metadata */", "/* compute this entry's hash */", "/* expand the hasharray if necessary */", "/* fill in the entry */", "/* sort the array */", "/* compute the SHA1 of the raw plus the various metadata */" ]
[ { "param": "chd", "type": "chd_file" }, { "param": "rawsha1", "type": "UINT8" }, { "param": "finalsha1", "type": "UINT8" } ]
{ "returns": [], "raises": [], "params": [ { "identifier": "chd", "type": "chd_file", "docstring": null, "docstring_tokens": [], "default": null, "is_optional": null }, { "identifier": "rawsha1", "type": "UINT8", "docstring": null, "docstring_tokens": [], "default": null, "is_optional": null }, { "identifier": "finalsha1", "type": "UINT8", "docstring": null, "docstring_tokens": [], "default": null, "is_optional": null } ], "outlier_params": [], "others": [] }
de1516c83d91cc3a04aa5401f52c2a975d90a0d4
lofunz/mieme
Reloaded/tags/MAME4droid.Reloaded.1.0.WIP/src/lib/util/chd.c
[ "Unlicense" ]
C
zlib_codec_free
void
static void zlib_codec_free(chd_file *chd) { zlib_codec_data *data = (zlib_codec_data *)chd->codecdata; /* deinit the streams */ if (data != NULL) { int i; inflateEnd(&data->inflater); deflateEnd(&data->deflater); /* free our fast memory */ for (i = 0; i < MAX_ZLIB_ALLOCS; i++) if (data->allocptr[i]) free(data->allocptr[i]); free(data); } }
/*------------------------------------------------- zlib_codec_free - free data for the ZLIB codec -------------------------------------------------*/
free data for the ZLIB codec
[ "free", "data", "for", "the", "ZLIB", "codec" ]
static void zlib_codec_free(chd_file *chd) { zlib_codec_data *data = (zlib_codec_data *)chd->codecdata; if (data != NULL) { int i; inflateEnd(&data->inflater); deflateEnd(&data->deflater); for (i = 0; i < MAX_ZLIB_ALLOCS; i++) if (data->allocptr[i]) free(data->allocptr[i]); free(data); } }
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zlib_codec_free - free data for the ZLIB codec
[ "zlib_codec_free", "-", "free", "data", "for", "the", "ZLIB", "codec" ]
[ "/* deinit the streams */", "/* free our fast memory */" ]
[ { "param": "chd", "type": "chd_file" } ]
{ "returns": [], "raises": [], "params": [ { "identifier": "chd", "type": "chd_file", "docstring": null, "docstring_tokens": [], "default": null, "is_optional": null } ], "outlier_params": [], "others": [] }
de1516c83d91cc3a04aa5401f52c2a975d90a0d4
lofunz/mieme
Reloaded/tags/MAME4droid.Reloaded.1.0.WIP/src/lib/util/chd.c
[ "Unlicense" ]
C
zlib_codec_compress
chd_error
static chd_error zlib_codec_compress(chd_file *chd, const void *src, UINT32 *length) { zlib_codec_data *data = (zlib_codec_data *)chd->codecdata; int zerr; /* reset the decompressor */ data->deflater.next_in = (Bytef *)src; data->deflater.avail_in = chd->header.hunkbytes; data->deflater.total_in = 0; data->deflater.next_out = chd->compressed; data->deflater.avail_out = chd->header.hunkbytes; data->deflater.total_out = 0; zerr = deflateReset(&data->deflater); if (zerr != Z_OK) return CHDERR_COMPRESSION_ERROR; /* do it */ zerr = deflate(&data->deflater, Z_FINISH); /* if we ended up with more data than we started with, return an error */ if (zerr != Z_STREAM_END || data->deflater.total_out >= chd->header.hunkbytes) return CHDERR_COMPRESSION_ERROR; /* otherwise, fill in the length and return success */ *length = data->deflater.total_out; return CHDERR_NONE; }
/*------------------------------------------------- zlib_codec_compress - compress data using the ZLIB codec -------------------------------------------------*/
compress data using the ZLIB codec
[ "compress", "data", "using", "the", "ZLIB", "codec" ]
static chd_error zlib_codec_compress(chd_file *chd, const void *src, UINT32 *length) { zlib_codec_data *data = (zlib_codec_data *)chd->codecdata; int zerr; data->deflater.next_in = (Bytef *)src; data->deflater.avail_in = chd->header.hunkbytes; data->deflater.total_in = 0; data->deflater.next_out = chd->compressed; data->deflater.avail_out = chd->header.hunkbytes; data->deflater.total_out = 0; zerr = deflateReset(&data->deflater); if (zerr != Z_OK) return CHDERR_COMPRESSION_ERROR; zerr = deflate(&data->deflater, Z_FINISH); if (zerr != Z_STREAM_END || data->deflater.total_out >= chd->header.hunkbytes) return CHDERR_COMPRESSION_ERROR; *length = data->deflater.total_out; return CHDERR_NONE; }
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zlib_codec_compress - compress data using the ZLIB codec
[ "zlib_codec_compress", "-", "compress", "data", "using", "the", "ZLIB", "codec" ]
[ "/* reset the decompressor */", "/* do it */", "/* if we ended up with more data than we started with, return an error */", "/* otherwise, fill in the length and return success */" ]
[ { "param": "chd", "type": "chd_file" }, { "param": "src", "type": "void" }, { "param": "length", "type": "UINT32" } ]
{ "returns": [], "raises": [], "params": [ { "identifier": "chd", "type": "chd_file", "docstring": null, "docstring_tokens": [], "default": null, "is_optional": null }, { "identifier": "src", "type": "void", "docstring": null, "docstring_tokens": [], "default": null, "is_optional": null }, { "identifier": "length", "type": "UINT32", "docstring": null, "docstring_tokens": [], "default": null, "is_optional": null } ], "outlier_params": [], "others": [] }
de1516c83d91cc3a04aa5401f52c2a975d90a0d4
lofunz/mieme
Reloaded/tags/MAME4droid.Reloaded.1.0.WIP/src/lib/util/chd.c
[ "Unlicense" ]
C
zlib_codec_decompress
chd_error
static chd_error zlib_codec_decompress(chd_file *chd, UINT32 srclength, void *dest) { zlib_codec_data *data = (zlib_codec_data *)chd->codecdata; int zerr; /* reset the decompressor */ data->inflater.next_in = chd->compressed; data->inflater.avail_in = srclength; data->inflater.total_in = 0; data->inflater.next_out = (Bytef *)dest; data->inflater.avail_out = chd->header.hunkbytes; data->inflater.total_out = 0; zerr = inflateReset(&data->inflater); if (zerr != Z_OK) return CHDERR_DECOMPRESSION_ERROR; /* do it */ zerr = inflate(&data->inflater, Z_FINISH); if (data->inflater.total_out != chd->header.hunkbytes) return CHDERR_DECOMPRESSION_ERROR; return CHDERR_NONE; }
/*------------------------------------------------- zlib_codec_decompress - decomrpess data using the ZLIB codec -------------------------------------------------*/
decomrpess data using the ZLIB codec
[ "decomrpess", "data", "using", "the", "ZLIB", "codec" ]
static chd_error zlib_codec_decompress(chd_file *chd, UINT32 srclength, void *dest) { zlib_codec_data *data = (zlib_codec_data *)chd->codecdata; int zerr; data->inflater.next_in = chd->compressed; data->inflater.avail_in = srclength; data->inflater.total_in = 0; data->inflater.next_out = (Bytef *)dest; data->inflater.avail_out = chd->header.hunkbytes; data->inflater.total_out = 0; zerr = inflateReset(&data->inflater); if (zerr != Z_OK) return CHDERR_DECOMPRESSION_ERROR; zerr = inflate(&data->inflater, Z_FINISH); if (data->inflater.total_out != chd->header.hunkbytes) return CHDERR_DECOMPRESSION_ERROR; return CHDERR_NONE; }
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zlib_codec_decompress - decomrpess data using the ZLIB codec
[ "zlib_codec_decompress", "-", "decomrpess", "data", "using", "the", "ZLIB", "codec" ]
[ "/* reset the decompressor */", "/* do it */" ]
[ { "param": "chd", "type": "chd_file" }, { "param": "srclength", "type": "UINT32" }, { "param": "dest", "type": "void" } ]
{ "returns": [], "raises": [], "params": [ { "identifier": "chd", "type": "chd_file", "docstring": null, "docstring_tokens": [], "default": null, "is_optional": null }, { "identifier": "srclength", "type": "UINT32", "docstring": null, "docstring_tokens": [], "default": null, "is_optional": null }, { "identifier": "dest", "type": "void", "docstring": null, "docstring_tokens": [], "default": null, "is_optional": null } ], "outlier_params": [], "others": [] }
de1516c83d91cc3a04aa5401f52c2a975d90a0d4
lofunz/mieme
Reloaded/tags/MAME4droid.Reloaded.1.0.WIP/src/lib/util/chd.c
[ "Unlicense" ]
C
zlib_fast_alloc
voidpf
static voidpf zlib_fast_alloc(voidpf opaque, uInt items, uInt size) { zlib_codec_data *data = (zlib_codec_data *)opaque; UINT32 *ptr; int i; /* compute the size, rounding to the nearest 1k */ size = (size * items + 0x3ff) & ~0x3ff; /* reuse a hunk if we can */ for (i = 0; i < MAX_ZLIB_ALLOCS; i++) { ptr = data->allocptr[i]; if (ptr && size == *ptr) { /* set the low bit of the size so we don't match next time */ *ptr |= 1; return ptr + 1; } } /* alloc a new one */ ptr = (UINT32 *)malloc(size + sizeof(UINT32)); if (!ptr) return NULL; /* put it into the list */ for (i = 0; i < MAX_ZLIB_ALLOCS; i++) if (!data->allocptr[i]) { data->allocptr[i] = ptr; break; } /* set the low bit of the size so we don't match next time */ *ptr = size | 1; return ptr + 1; }
/*------------------------------------------------- zlib_fast_alloc - fast malloc for ZLIB, which allocates and frees memory frequently -------------------------------------------------*/
fast malloc for ZLIB, which allocates and frees memory frequently
[ "fast", "malloc", "for", "ZLIB", "which", "allocates", "and", "frees", "memory", "frequently" ]
static voidpf zlib_fast_alloc(voidpf opaque, uInt items, uInt size) { zlib_codec_data *data = (zlib_codec_data *)opaque; UINT32 *ptr; int i; size = (size * items + 0x3ff) & ~0x3ff; for (i = 0; i < MAX_ZLIB_ALLOCS; i++) { ptr = data->allocptr[i]; if (ptr && size == *ptr) { *ptr |= 1; return ptr + 1; } } ptr = (UINT32 *)malloc(size + sizeof(UINT32)); if (!ptr) return NULL; for (i = 0; i < MAX_ZLIB_ALLOCS; i++) if (!data->allocptr[i]) { data->allocptr[i] = ptr; break; } *ptr = size | 1; return ptr + 1; }
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zlib_fast_alloc - fast malloc for ZLIB, which allocates and frees memory frequently
[ "zlib_fast_alloc", "-", "fast", "malloc", "for", "ZLIB", "which", "allocates", "and", "frees", "memory", "frequently" ]
[ "/* compute the size, rounding to the nearest 1k */", "/* reuse a hunk if we can */", "/* set the low bit of the size so we don't match next time */", "/* alloc a new one */", "/* put it into the list */", "/* set the low bit of the size so we don't match next time */" ]
[ { "param": "opaque", "type": "voidpf" }, { "param": "items", "type": "uInt" }, { "param": "size", "type": "uInt" } ]
{ "returns": [], "raises": [], "params": [ { "identifier": "opaque", "type": "voidpf", "docstring": null, "docstring_tokens": [], "default": null, "is_optional": null }, { "identifier": "items", "type": "uInt", "docstring": null, "docstring_tokens": [], "default": null, "is_optional": null }, { "identifier": "size", "type": "uInt", "docstring": null, "docstring_tokens": [], "default": null, "is_optional": null } ], "outlier_params": [], "others": [] }
de1516c83d91cc3a04aa5401f52c2a975d90a0d4
lofunz/mieme
Reloaded/tags/MAME4droid.Reloaded.1.0.WIP/src/lib/util/chd.c
[ "Unlicense" ]
C
zlib_fast_free
void
static void zlib_fast_free(voidpf opaque, voidpf address) { zlib_codec_data *data = (zlib_codec_data *)opaque; UINT32 *ptr = (UINT32 *)address - 1; int i; /* find the hunk */ for (i = 0; i < MAX_ZLIB_ALLOCS; i++) if (ptr == data->allocptr[i]) { /* clear the low bit of the size to allow matches */ *ptr &= ~1; return; } }
/*------------------------------------------------- zlib_fast_free - fast free for ZLIB, which allocates and frees memory frequently -------------------------------------------------*/
fast free for ZLIB, which allocates and frees memory frequently
[ "fast", "free", "for", "ZLIB", "which", "allocates", "and", "frees", "memory", "frequently" ]
static void zlib_fast_free(voidpf opaque, voidpf address) { zlib_codec_data *data = (zlib_codec_data *)opaque; UINT32 *ptr = (UINT32 *)address - 1; int i; for (i = 0; i < MAX_ZLIB_ALLOCS; i++) if (ptr == data->allocptr[i]) { *ptr &= ~1; return; } }
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zlib_fast_free - fast free for ZLIB, which allocates and frees memory frequently
[ "zlib_fast_free", "-", "fast", "free", "for", "ZLIB", "which", "allocates", "and", "frees", "memory", "frequently" ]
[ "/* find the hunk */", "/* clear the low bit of the size to allow matches */" ]
[ { "param": "opaque", "type": "voidpf" }, { "param": "address", "type": "voidpf" } ]
{ "returns": [], "raises": [], "params": [ { "identifier": "opaque", "type": "voidpf", "docstring": null, "docstring_tokens": [], "default": null, "is_optional": null }, { "identifier": "address", "type": "voidpf", "docstring": null, "docstring_tokens": [], "default": null, "is_optional": null } ], "outlier_params": [], "others": [] }
de1516c83d91cc3a04aa5401f52c2a975d90a0d4
lofunz/mieme
Reloaded/tags/MAME4droid.Reloaded.1.0.WIP/src/lib/util/chd.c
[ "Unlicense" ]
C
av_codec_init
chd_error
static chd_error av_codec_init(chd_file *chd) { av_codec_data *data; /* allocate memory for the 2 stream buffers */ data = (av_codec_data *)malloc(sizeof(*data)); if (data == NULL) return CHDERR_OUT_OF_MEMORY; /* clear the buffers */ memset(data, 0, sizeof(*data)); chd->codecdata = data; /* attempt to do a post-init now; if we're creating a new CHD, this won't work */ /* but that's ok */ av_codec_postinit(chd); return CHDERR_NONE; }
/*------------------------------------------------- av_codec_init - initialize the A/V codec -------------------------------------------------*/
initialize the A/V codec
[ "initialize", "the", "A", "/", "V", "codec" ]
static chd_error av_codec_init(chd_file *chd) { av_codec_data *data; data = (av_codec_data *)malloc(sizeof(*data)); if (data == NULL) return CHDERR_OUT_OF_MEMORY; memset(data, 0, sizeof(*data)); chd->codecdata = data; av_codec_postinit(chd); return CHDERR_NONE; }
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av_codec_init - initialize the A/V codec
[ "av_codec_init", "-", "initialize", "the", "A", "/", "V", "codec" ]
[ "/* allocate memory for the 2 stream buffers */", "/* clear the buffers */", "/* attempt to do a post-init now; if we're creating a new CHD, this won't work */", "/* but that's ok */" ]
[ { "param": "chd", "type": "chd_file" } ]
{ "returns": [], "raises": [], "params": [ { "identifier": "chd", "type": "chd_file", "docstring": null, "docstring_tokens": [], "default": null, "is_optional": null } ], "outlier_params": [], "others": [] }
de1516c83d91cc3a04aa5401f52c2a975d90a0d4
lofunz/mieme
Reloaded/tags/MAME4droid.Reloaded.1.0.WIP/src/lib/util/chd.c
[ "Unlicense" ]
C
av_codec_free
void
static void av_codec_free(chd_file *chd) { av_codec_data *data = (av_codec_data *)chd->codecdata; /* deinit avcomp */ if (data != NULL) { if (data->compstate != NULL) avcomp_free(data->compstate); free(data); } }
/*------------------------------------------------- av_codec_free - free data for the A/V codec -------------------------------------------------*/
free data for the A/V codec
[ "free", "data", "for", "the", "A", "/", "V", "codec" ]
static void av_codec_free(chd_file *chd) { av_codec_data *data = (av_codec_data *)chd->codecdata; if (data != NULL) { if (data->compstate != NULL) avcomp_free(data->compstate); free(data); } }
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av_codec_free - free data for the A/V codec
[ "av_codec_free", "-", "free", "data", "for", "the", "A", "/", "V", "codec" ]
[ "/* deinit avcomp */" ]
[ { "param": "chd", "type": "chd_file" } ]
{ "returns": [], "raises": [], "params": [ { "identifier": "chd", "type": "chd_file", "docstring": null, "docstring_tokens": [], "default": null, "is_optional": null } ], "outlier_params": [], "others": [] }
de1516c83d91cc3a04aa5401f52c2a975d90a0d4
lofunz/mieme
Reloaded/tags/MAME4droid.Reloaded.1.0.WIP/src/lib/util/chd.c
[ "Unlicense" ]
C
av_codec_compress
chd_error
static chd_error av_codec_compress(chd_file *chd, const void *src, UINT32 *length) { av_codec_data *data = (av_codec_data *)chd->codecdata; int averr; int size; /* if we haven't yet set up the avcomp code, do it now */ if (data->compstate == NULL) { chd_error chderr = av_codec_postinit(chd); if (chderr != CHDERR_NONE) return chderr; } /* make sure short frames are padded with 0 */ if (src != NULL) { size = av_raw_data_size((const UINT8 *)src); while (size < chd->header.hunkbytes) if (((const UINT8 *)src)[size++] != 0) return CHDERR_INVALID_DATA; } /* encode the audio and video */ averr = avcomp_encode_data(data->compstate, (const UINT8 *)src, chd->compressed, length); if (averr != AVCERR_NONE || *length > chd->header.hunkbytes) return CHDERR_COMPRESSION_ERROR; return CHDERR_NONE; }
/*------------------------------------------------- av_codec_compress - compress data using the A/V codec -------------------------------------------------*/
compress data using the A/V codec
[ "compress", "data", "using", "the", "A", "/", "V", "codec" ]
static chd_error av_codec_compress(chd_file *chd, const void *src, UINT32 *length) { av_codec_data *data = (av_codec_data *)chd->codecdata; int averr; int size; if (data->compstate == NULL) { chd_error chderr = av_codec_postinit(chd); if (chderr != CHDERR_NONE) return chderr; } if (src != NULL) { size = av_raw_data_size((const UINT8 *)src); while (size < chd->header.hunkbytes) if (((const UINT8 *)src)[size++] != 0) return CHDERR_INVALID_DATA; } averr = avcomp_encode_data(data->compstate, (const UINT8 *)src, chd->compressed, length); if (averr != AVCERR_NONE || *length > chd->header.hunkbytes) return CHDERR_COMPRESSION_ERROR; return CHDERR_NONE; }
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av_codec_compress - compress data using the A/V codec
[ "av_codec_compress", "-", "compress", "data", "using", "the", "A", "/", "V", "codec" ]
[ "/* if we haven't yet set up the avcomp code, do it now */", "/* make sure short frames are padded with 0 */", "/* encode the audio and video */" ]
[ { "param": "chd", "type": "chd_file" }, { "param": "src", "type": "void" }, { "param": "length", "type": "UINT32" } ]
{ "returns": [], "raises": [], "params": [ { "identifier": "chd", "type": "chd_file", "docstring": null, "docstring_tokens": [], "default": null, "is_optional": null }, { "identifier": "src", "type": "void", "docstring": null, "docstring_tokens": [], "default": null, "is_optional": null }, { "identifier": "length", "type": "UINT32", "docstring": null, "docstring_tokens": [], "default": null, "is_optional": null } ], "outlier_params": [], "others": [] }
de1516c83d91cc3a04aa5401f52c2a975d90a0d4
lofunz/mieme
Reloaded/tags/MAME4droid.Reloaded.1.0.WIP/src/lib/util/chd.c
[ "Unlicense" ]
C
av_codec_decompress
chd_error
static chd_error av_codec_decompress(chd_file *chd, UINT32 srclength, void *dest) { av_codec_data *data = (av_codec_data *)chd->codecdata; const UINT8 *source; avcomp_error averr; int size; /* if we haven't yet set up the avcomp code, do it now */ if (data->compstate == NULL) { chd_error chderr = av_codec_postinit(chd); if (chderr != CHDERR_NONE) return chderr; } /* decode the audio and video */ source = chd->compressed; averr = avcomp_decode_data(data->compstate, source, srclength, (UINT8 *)dest); if (averr != AVCERR_NONE) return CHDERR_DECOMPRESSION_ERROR; /* pad short frames with 0 */ if (dest != NULL) { size = av_raw_data_size((const UINT8 *)dest); while (size < chd->header.hunkbytes) ((UINT8 *)dest)[size++] = 0; } return CHDERR_NONE; }
/*------------------------------------------------- av_codec_decompress - decomrpess data using the A/V codec -------------------------------------------------*/
decomrpess data using the A/V codec
[ "decomrpess", "data", "using", "the", "A", "/", "V", "codec" ]
static chd_error av_codec_decompress(chd_file *chd, UINT32 srclength, void *dest) { av_codec_data *data = (av_codec_data *)chd->codecdata; const UINT8 *source; avcomp_error averr; int size; if (data->compstate == NULL) { chd_error chderr = av_codec_postinit(chd); if (chderr != CHDERR_NONE) return chderr; } source = chd->compressed; averr = avcomp_decode_data(data->compstate, source, srclength, (UINT8 *)dest); if (averr != AVCERR_NONE) return CHDERR_DECOMPRESSION_ERROR; if (dest != NULL) { size = av_raw_data_size((const UINT8 *)dest); while (size < chd->header.hunkbytes) ((UINT8 *)dest)[size++] = 0; } return CHDERR_NONE; }
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av_codec_decompress - decomrpess data using the A/V codec
[ "av_codec_decompress", "-", "decomrpess", "data", "using", "the", "A", "/", "V", "codec" ]
[ "/* if we haven't yet set up the avcomp code, do it now */", "/* decode the audio and video */", "/* pad short frames with 0 */" ]
[ { "param": "chd", "type": "chd_file" }, { "param": "srclength", "type": "UINT32" }, { "param": "dest", "type": "void" } ]
{ "returns": [], "raises": [], "params": [ { "identifier": "chd", "type": "chd_file", "docstring": null, "docstring_tokens": [], "default": null, "is_optional": null }, { "identifier": "srclength", "type": "UINT32", "docstring": null, "docstring_tokens": [], "default": null, "is_optional": null }, { "identifier": "dest", "type": "void", "docstring": null, "docstring_tokens": [], "default": null, "is_optional": null } ], "outlier_params": [], "others": [] }
de1516c83d91cc3a04aa5401f52c2a975d90a0d4
lofunz/mieme
Reloaded/tags/MAME4droid.Reloaded.1.0.WIP/src/lib/util/chd.c
[ "Unlicense" ]
C
av_codec_config
chd_error
static chd_error av_codec_config(chd_file *chd, int param, void *config) { av_codec_data *data = (av_codec_data *)chd->codecdata; /* if we're getting the compression configuration, apply it now */ if (param == AV_CODEC_COMPRESS_CONFIG) { data->compress = *(av_codec_compress_config *)config; if (data->compstate != NULL) avcomp_config_compress(data->compstate, &data->compress); return CHDERR_NONE; } /* if we're getting the decompression configuration, apply it now */ else if (param == AV_CODEC_DECOMPRESS_CONFIG) { data->decompress = *(av_codec_decompress_config *)config; if (data->compstate != NULL) avcomp_config_decompress(data->compstate, &data->decompress); return CHDERR_NONE; } /* anything else is invalid */ return CHDERR_INVALID_PARAMETER; }
/*------------------------------------------------- av_codec_config - codec-specific configuration for the A/V codec -------------------------------------------------*/
codec-specific configuration for the A/V codec
[ "codec", "-", "specific", "configuration", "for", "the", "A", "/", "V", "codec" ]
static chd_error av_codec_config(chd_file *chd, int param, void *config) { av_codec_data *data = (av_codec_data *)chd->codecdata; if (param == AV_CODEC_COMPRESS_CONFIG) { data->compress = *(av_codec_compress_config *)config; if (data->compstate != NULL) avcomp_config_compress(data->compstate, &data->compress); return CHDERR_NONE; } else if (param == AV_CODEC_DECOMPRESS_CONFIG) { data->decompress = *(av_codec_decompress_config *)config; if (data->compstate != NULL) avcomp_config_decompress(data->compstate, &data->decompress); return CHDERR_NONE; } return CHDERR_INVALID_PARAMETER; }
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av_codec_config - codec-specific configuration for the A/V codec
[ "av_codec_config", "-", "codec", "-", "specific", "configuration", "for", "the", "A", "/", "V", "codec" ]
[ "/* if we're getting the compression configuration, apply it now */", "/* if we're getting the decompression configuration, apply it now */", "/* anything else is invalid */" ]
[ { "param": "chd", "type": "chd_file" }, { "param": "param", "type": "int" }, { "param": "config", "type": "void" } ]
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de1516c83d91cc3a04aa5401f52c2a975d90a0d4
lofunz/mieme
Reloaded/tags/MAME4droid.Reloaded.1.0.WIP/src/lib/util/chd.c
[ "Unlicense" ]
C
av_codec_postinit
chd_error
static chd_error av_codec_postinit(chd_file *chd) { int fps, fpsfrac, width, height, interlaced, channels, rate; UINT32 fps_times_1million, max_samples_per_frame, bytes_per_frame; av_codec_data *data = (av_codec_data *)chd->codecdata; char metadata[256]; chd_error err; /* the code below won't work asynchronously */ if (chd->workitem != NULL) return CHDERR_OPERATION_PENDING; /* get the metadata */ err = chd_get_metadata(chd, AV_METADATA_TAG, 0, metadata, sizeof(metadata), NULL, NULL, NULL); if (err != CHDERR_NONE) return err; /* extract the info */ if (sscanf(metadata, AV_METADATA_FORMAT, &fps, &fpsfrac, &width, &height, &interlaced, &channels, &rate) != 7) return CHDERR_INVALID_METADATA; /* compute the bytes per frame */ fps_times_1million = fps * 1000000 + fpsfrac; max_samples_per_frame = ((UINT64)rate * 1000000 + fps_times_1million - 1) / fps_times_1million; bytes_per_frame = 12 + channels * max_samples_per_frame * 2 + width * height * 2; if (bytes_per_frame > chd->header.hunkbytes) return CHDERR_INVALID_METADATA; /* create the avcomp state */ data->compstate = avcomp_init(width, height, channels); /* configure the codec */ avcomp_config_compress(data->compstate, &data->compress); avcomp_config_decompress(data->compstate, &data->decompress); return CHDERR_NONE; }
/*------------------------------------------------- av_codec_postinit - actual initialization of avcomp happens here, on the first attempt to compress or decompress data -------------------------------------------------*/
actual initialization of avcomp happens here, on the first attempt to compress or decompress data
[ "actual", "initialization", "of", "avcomp", "happens", "here", "on", "the", "first", "attempt", "to", "compress", "or", "decompress", "data" ]
static chd_error av_codec_postinit(chd_file *chd) { int fps, fpsfrac, width, height, interlaced, channels, rate; UINT32 fps_times_1million, max_samples_per_frame, bytes_per_frame; av_codec_data *data = (av_codec_data *)chd->codecdata; char metadata[256]; chd_error err; if (chd->workitem != NULL) return CHDERR_OPERATION_PENDING; err = chd_get_metadata(chd, AV_METADATA_TAG, 0, metadata, sizeof(metadata), NULL, NULL, NULL); if (err != CHDERR_NONE) return err; if (sscanf(metadata, AV_METADATA_FORMAT, &fps, &fpsfrac, &width, &height, &interlaced, &channels, &rate) != 7) return CHDERR_INVALID_METADATA; fps_times_1million = fps * 1000000 + fpsfrac; max_samples_per_frame = ((UINT64)rate * 1000000 + fps_times_1million - 1) / fps_times_1million; bytes_per_frame = 12 + channels * max_samples_per_frame * 2 + width * height * 2; if (bytes_per_frame > chd->header.hunkbytes) return CHDERR_INVALID_METADATA; data->compstate = avcomp_init(width, height, channels); avcomp_config_compress(data->compstate, &data->compress); avcomp_config_decompress(data->compstate, &data->decompress); return CHDERR_NONE; }
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av_codec_postinit - actual initialization of avcomp happens here, on the first attempt to compress or decompress data
[ "av_codec_postinit", "-", "actual", "initialization", "of", "avcomp", "happens", "here", "on", "the", "first", "attempt", "to", "compress", "or", "decompress", "data" ]
[ "/* the code below won't work asynchronously */", "/* get the metadata */", "/* extract the info */", "/* compute the bytes per frame */", "/* create the avcomp state */", "/* configure the codec */" ]
[ { "param": "chd", "type": "chd_file" } ]
{ "returns": [], "raises": [], "params": [ { "identifier": "chd", "type": "chd_file", "docstring": null, "docstring_tokens": [], "default": null, "is_optional": null } ], "outlier_params": [], "others": [] }
3bc7f26268b7d70ff012b9cf13433d9edc1fec78
lofunz/mieme
Reloaded/tags/MAME4droid.Reloaded.1.0.WIP/src/mame/video/metro.c
[ "Unlicense" ]
C
draw_layers
void
static void draw_layers(running_machine *machine, bitmap_t *bitmap, const rectangle *cliprect, int pri, int layers_ctrl) { UINT16 layers_pri = metro_videoregs[0x10/2]; int layer; /* Draw all the layers with priority == pri */ for (layer = 2; layer >= 0; layer--) // tilemap[2] below? { if ( pri == ((layers_pri >> (layer*2)) & 3) ) { /* Scroll and Window values */ UINT16 sy = metro_scroll[layer * 2 + 0]; UINT16 sx = metro_scroll[layer * 2 + 1]; UINT16 wy = metro_window[layer * 2 + 0]; UINT16 wx = metro_window[layer * 2 + 1]; if (layers_ctrl & (1<<layer)) // for debug { /* Only *one* of tilemap_16x16 & tilemap is enabled at any given time! */ draw_tilemap(machine, bitmap,cliprect,bg_tilemap[layer], 0, 1<<(3-pri), sx, sy, wx, wy); if (tilemap_16x16[layer]) draw_tilemap(machine, bitmap,cliprect,tilemap_16x16[layer], 0, 1<<(3-pri), sx, sy, wx, wy); } } } }
/* Draw all the layers that match the given priority */
Draw all the layers that match the given priority
[ "Draw", "all", "the", "layers", "that", "match", "the", "given", "priority" ]
static void draw_layers(running_machine *machine, bitmap_t *bitmap, const rectangle *cliprect, int pri, int layers_ctrl) { UINT16 layers_pri = metro_videoregs[0x10/2]; int layer; for (layer = 2; layer >= 0; layer--) { if ( pri == ((layers_pri >> (layer*2)) & 3) ) { UINT16 sy = metro_scroll[layer * 2 + 0]; UINT16 sx = metro_scroll[layer * 2 + 1]; UINT16 wy = metro_window[layer * 2 + 0]; UINT16 wx = metro_window[layer * 2 + 1]; if (layers_ctrl & (1<<layer)) { draw_tilemap(machine, bitmap,cliprect,bg_tilemap[layer], 0, 1<<(3-pri), sx, sy, wx, wy); if (tilemap_16x16[layer]) draw_tilemap(machine, bitmap,cliprect,tilemap_16x16[layer], 0, 1<<(3-pri), sx, sy, wx, wy); } } } }
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Draw all the layers that match the given priority
[ "Draw", "all", "the", "layers", "that", "match", "the", "given", "priority" ]
[ "/* Draw all the layers with priority == pri */", "// tilemap[2] below?", "/* Scroll and Window values */", "// for debug", "/* Only *one* of tilemap_16x16 & tilemap is enabled at any given time! */" ]
[ { "param": "machine", "type": "running_machine" }, { "param": "bitmap", "type": "bitmap_t" }, { "param": "cliprect", "type": "rectangle" }, { "param": "pri", "type": "int" }, { "param": "layers_ctrl", "type": "int" } ]
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3bc7f26268b7d70ff012b9cf13433d9edc1fec78
lofunz/mieme
Reloaded/tags/MAME4droid.Reloaded.1.0.WIP/src/mame/video/metro.c
[ "Unlicense" ]
C
dirty_tiles
void
static void dirty_tiles(int layer,UINT16 *vram) { int col,row; for (row = 0;row < WIN_NY;row++) { for (col = 0;col < WIN_NX;col++) { int offset = (col + metro_window[layer * 2 + 1] / 8) % BIG_NX + ((row + metro_window[layer * 2 + 0] / 8) % BIG_NY) * BIG_NX; UINT16 code = vram[offset]; if (!(code & 0x8000) && dirtyindex[(code & 0x1ff0) >> 4]) { tilemap_mark_tile_dirty(bg_tilemap[layer], row * WIN_NX + col ); if (tilemap_16x16[layer]) tilemap_mark_tile_dirty(tilemap_16x16[layer], row * WIN_NX + col ); } } } }
/* Dirty tilemaps when the tiles set changes */
Dirty tilemaps when the tiles set changes
[ "Dirty", "tilemaps", "when", "the", "tiles", "set", "changes" ]
static void dirty_tiles(int layer,UINT16 *vram) { int col,row; for (row = 0;row < WIN_NY;row++) { for (col = 0;col < WIN_NX;col++) { int offset = (col + metro_window[layer * 2 + 1] / 8) % BIG_NX + ((row + metro_window[layer * 2 + 0] / 8) % BIG_NY) * BIG_NX; UINT16 code = vram[offset]; if (!(code & 0x8000) && dirtyindex[(code & 0x1ff0) >> 4]) { tilemap_mark_tile_dirty(bg_tilemap[layer], row * WIN_NX + col ); if (tilemap_16x16[layer]) tilemap_mark_tile_dirty(tilemap_16x16[layer], row * WIN_NX + col ); } } } }
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Dirty tilemaps when the tiles set changes
[ "Dirty", "tilemaps", "when", "the", "tiles", "set", "changes" ]
[]
[ { "param": "layer", "type": "int" }, { "param": "vram", "type": "UINT16" } ]
{ "returns": [], "raises": [], "params": [ { "identifier": "layer", "type": "int", "docstring": null, "docstring_tokens": [], "default": null, "is_optional": null }, { "identifier": "vram", "type": "UINT16", "docstring": null, "docstring_tokens": [], "default": null, "is_optional": null } ], "outlier_params": [], "others": [] }
a3fb952528ffa0b1a426b1ea471308311a631f41
lofunz/mieme
Reloaded/trunk/src/emu/sound/mos6560.c
[ "Unlicense" ]
C
mos6560_drawlines
void
static void mos6560_drawlines( running_device *device, int first, int last ) { mos6560_state *mos6560 = get_safe_token(device); int line, vline; int offs, yoff, xoff, ybegin, yend, i, j; int attr, ch; mos6560->lastline = last; if (first >= last) return; for (line = first; (line < mos6560->ypos) && (line < last); line++) { for (j = 0; j < mos6560->total_xsize; j++) *BITMAP_ADDR16(mos6560->bitmap, line, j) = mos6560->framecolor; } for (vline = line - mos6560->ypos; (line < last) && (line < mos6560->ypos + mos6560->ysize);) { if (mos6560->matrix8x16) { offs = (vline >> 4) * mos6560->chars_x; yoff = (vline & ~0xf) + mos6560->ypos; ybegin = vline & 0xf; yend = (vline + 0xf < last - mos6560->ypos) ? 0xf : ((last - line) & 0xf) + ybegin; } else { offs = (vline >> 3) * mos6560->chars_x; yoff = (vline & ~7) + mos6560->ypos; ybegin = vline & 7; yend = (vline + 7 < last - mos6560->ypos) ? 7 : ((last - line) & 7) + ybegin; } if (mos6560->xpos > 0) { for (i = ybegin; i <= yend; i++) for (j = 0; j < mos6560->xpos; j++) *BITMAP_ADDR16(mos6560->bitmap, yoff + i, j) = mos6560->framecolor; } for (xoff = mos6560->xpos; (xoff < mos6560->xpos + mos6560->xsize) && (xoff < mos6560->total_xsize); xoff += 8, offs++) { ch = mos6560->dma_read(device->machine, (mos6560->videoaddr + offs) & 0x3fff); attr = (mos6560->dma_read_color(device->machine, (mos6560->videoaddr + offs) & 0x3fff)) & 0xf; if (mos6560->type == MOS6560_ATTACKUFO) { /* the mos6560 variant used in attckufo only has only one draw mode */ mos6560->mono[1] = attr; mos6560_draw_character(device, ybegin, yend, ch, yoff, xoff, mos6560->mono); } else if (mos6560->inverted) { if (attr & 8) { mos6560->multiinverted[0] = attr & 7; mos6560_draw_character_multi(device, ybegin, yend, ch, yoff, xoff, mos6560->multiinverted); } else { mos6560->monoinverted[0] = attr; mos6560_draw_character(device, ybegin, yend, ch, yoff, xoff, mos6560->monoinverted); } } else { if (attr & 8) { mos6560->multi[2] = attr & 7; mos6560_draw_character_multi(device, ybegin, yend, ch, yoff, xoff, mos6560->multi); } else { mos6560->mono[1] = attr; mos6560_draw_character(device, ybegin, yend, ch, yoff, xoff, mos6560->mono); } } } if (xoff < mos6560->total_xsize) { for (i = ybegin; i <= yend; i++) for (j = xoff; j < mos6560->total_xsize; j++) *BITMAP_ADDR16(mos6560->bitmap, yoff + i, j) = mos6560->framecolor; } if (mos6560->matrix8x16) { vline = (vline + 16) & ~0xf; line = vline + mos6560->ypos; } else { vline = (vline + 8) & ~7; line = vline + mos6560->ypos; } } for (; line < last; line++) for (j = 0; j < mos6560->total_xsize; j++) *BITMAP_ADDR16(mos6560->bitmap, line, j) = mos6560->framecolor; }
/*------------------------------------------------- mos6560_drawlines - draw a certain numer of lines -------------------------------------------------*/
draw a certain numer of lines
[ "draw", "a", "certain", "numer", "of", "lines" ]
static void mos6560_drawlines( running_device *device, int first, int last ) { mos6560_state *mos6560 = get_safe_token(device); int line, vline; int offs, yoff, xoff, ybegin, yend, i, j; int attr, ch; mos6560->lastline = last; if (first >= last) return; for (line = first; (line < mos6560->ypos) && (line < last); line++) { for (j = 0; j < mos6560->total_xsize; j++) *BITMAP_ADDR16(mos6560->bitmap, line, j) = mos6560->framecolor; } for (vline = line - mos6560->ypos; (line < last) && (line < mos6560->ypos + mos6560->ysize);) { if (mos6560->matrix8x16) { offs = (vline >> 4) * mos6560->chars_x; yoff = (vline & ~0xf) + mos6560->ypos; ybegin = vline & 0xf; yend = (vline + 0xf < last - mos6560->ypos) ? 0xf : ((last - line) & 0xf) + ybegin; } else { offs = (vline >> 3) * mos6560->chars_x; yoff = (vline & ~7) + mos6560->ypos; ybegin = vline & 7; yend = (vline + 7 < last - mos6560->ypos) ? 7 : ((last - line) & 7) + ybegin; } if (mos6560->xpos > 0) { for (i = ybegin; i <= yend; i++) for (j = 0; j < mos6560->xpos; j++) *BITMAP_ADDR16(mos6560->bitmap, yoff + i, j) = mos6560->framecolor; } for (xoff = mos6560->xpos; (xoff < mos6560->xpos + mos6560->xsize) && (xoff < mos6560->total_xsize); xoff += 8, offs++) { ch = mos6560->dma_read(device->machine, (mos6560->videoaddr + offs) & 0x3fff); attr = (mos6560->dma_read_color(device->machine, (mos6560->videoaddr + offs) & 0x3fff)) & 0xf; if (mos6560->type == MOS6560_ATTACKUFO) { mos6560->mono[1] = attr; mos6560_draw_character(device, ybegin, yend, ch, yoff, xoff, mos6560->mono); } else if (mos6560->inverted) { if (attr & 8) { mos6560->multiinverted[0] = attr & 7; mos6560_draw_character_multi(device, ybegin, yend, ch, yoff, xoff, mos6560->multiinverted); } else { mos6560->monoinverted[0] = attr; mos6560_draw_character(device, ybegin, yend, ch, yoff, xoff, mos6560->monoinverted); } } else { if (attr & 8) { mos6560->multi[2] = attr & 7; mos6560_draw_character_multi(device, ybegin, yend, ch, yoff, xoff, mos6560->multi); } else { mos6560->mono[1] = attr; mos6560_draw_character(device, ybegin, yend, ch, yoff, xoff, mos6560->mono); } } } if (xoff < mos6560->total_xsize) { for (i = ybegin; i <= yend; i++) for (j = xoff; j < mos6560->total_xsize; j++) *BITMAP_ADDR16(mos6560->bitmap, yoff + i, j) = mos6560->framecolor; } if (mos6560->matrix8x16) { vline = (vline + 16) & ~0xf; line = vline + mos6560->ypos; } else { vline = (vline + 8) & ~7; line = vline + mos6560->ypos; } } for (; line < last; line++) for (j = 0; j < mos6560->total_xsize; j++) *BITMAP_ADDR16(mos6560->bitmap, line, j) = mos6560->framecolor; }
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mos6560_drawlines - draw a certain numer of lines
[ "mos6560_drawlines", "-", "draw", "a", "certain", "numer", "of", "lines" ]
[ "/* the mos6560 variant used in attckufo only has only one draw mode */" ]
[ { "param": "device", "type": "running_device" }, { "param": "first", "type": "int" }, { "param": "last", "type": "int" } ]
{ "returns": [], "raises": [], "params": [ { "identifier": "device", "type": "running_device", "docstring": null, "docstring_tokens": [], "default": null, "is_optional": null }, { "identifier": "first", "type": "int", "docstring": null, "docstring_tokens": [], "default": null, "is_optional": null }, { "identifier": "last", "type": "int", "docstring": null, "docstring_tokens": [], "default": null, "is_optional": null } ], "outlier_params": [], "others": [] }
a3fb952528ffa0b1a426b1ea471308311a631f41
lofunz/mieme
Reloaded/trunk/src/emu/sound/mos6560.c
[ "Unlicense" ]
C
mos6560_video_update
UINT32
UINT32 mos6560_video_update( running_device *device, bitmap_t *bitmap, const rectangle *cliprect ) { mos6560_state *mos6560 = get_safe_token(device); copybitmap(bitmap, mos6560->bitmap, 0, 0, 0, 0, cliprect); return 0; }
/*------------------------------------------------- mos6560_video_update - copy the VIC bitmap to main screen bitmap -------------------------------------------------*/
copy the VIC bitmap to main screen bitmap
[ "copy", "the", "VIC", "bitmap", "to", "main", "screen", "bitmap" ]
UINT32 mos6560_video_update( running_device *device, bitmap_t *bitmap, const rectangle *cliprect ) { mos6560_state *mos6560 = get_safe_token(device); copybitmap(bitmap, mos6560->bitmap, 0, 0, 0, 0, cliprect); return 0; }
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mos6560_video_update - copy the VIC bitmap to main screen bitmap
[ "mos6560_video_update", "-", "copy", "the", "VIC", "bitmap", "to", "main", "screen", "bitmap" ]
[]
[ { "param": "device", "type": "running_device" }, { "param": "bitmap", "type": "bitmap_t" }, { "param": "cliprect", "type": "rectangle" } ]
{ "returns": [], "raises": [], "params": [ { "identifier": "device", "type": "running_device", "docstring": null, "docstring_tokens": [], "default": null, "is_optional": null }, { "identifier": "bitmap", "type": "bitmap_t", "docstring": null, "docstring_tokens": [], "default": null, "is_optional": null }, { "identifier": "cliprect", "type": "rectangle", "docstring": null, "docstring_tokens": [], "default": null, "is_optional": null } ], "outlier_params": [], "others": [] }
a3fb952528ffa0b1a426b1ea471308311a631f41
lofunz/mieme
Reloaded/trunk/src/emu/sound/mos6560.c
[ "Unlicense" ]
C
mos6560_sound_start
void
static void mos6560_sound_start( running_device *device ) { mos6560_state *mos6560 = get_safe_token(device); int i; mos6560->channel = stream_create(device, 0, 1, device->machine->sample_rate, 0, mos6560_update); /* buffer for fastest played sample for 5 second so we have enough data for min 5 second */ mos6560->noisesize = NOISE_FREQUENCY_MAX * NOISE_BUFFER_SIZE_SEC; mos6560->noise = auto_alloc_array(device->machine, INT8, mos6560->noisesize); { int noiseshift = 0x7ffff8; char data; for (i = 0; i < mos6560->noisesize; i++) { data = 0; if (noiseshift & 0x400000) data |= 0x80; if (noiseshift & 0x100000) data |= 0x40; if (noiseshift & 0x010000) data |= 0x20; if (noiseshift & 0x002000) data |= 0x10; if (noiseshift & 0x000800) data |= 0x08; if (noiseshift & 0x000080) data |= 0x04; if (noiseshift & 0x000010) data |= 0x02; if (noiseshift & 0x000004) data |= 0x01; mos6560->noise[i] = data; if (((noiseshift & 0x400000) == 0) != ((noiseshift & 0x002000) == 0)) noiseshift = (noiseshift << 1) | 1; else noiseshift <<= 1; } } mos6560->tonesize = device->machine->sample_rate / TONE_FREQUENCY_MIN; if (mos6560->tonesize > 0) { mos6560->tone = auto_alloc_array(device->machine, INT16, mos6560->tonesize); for (i = 0; i < mos6560->tonesize; i++) { mos6560->tone[i] = (INT16)(sin (2 * M_PI * i / mos6560->tonesize) * 127 + 0.5); } } else { mos6560->tone = NULL; } }
/*------------------------------------------------- mos6560_sound_start - start audio emulation (to be called at device start) -------------------------------------------------*/
start audio emulation (to be called at device start)
[ "start", "audio", "emulation", "(", "to", "be", "called", "at", "device", "start", ")" ]
static void mos6560_sound_start( running_device *device ) { mos6560_state *mos6560 = get_safe_token(device); int i; mos6560->channel = stream_create(device, 0, 1, device->machine->sample_rate, 0, mos6560_update); mos6560->noisesize = NOISE_FREQUENCY_MAX * NOISE_BUFFER_SIZE_SEC; mos6560->noise = auto_alloc_array(device->machine, INT8, mos6560->noisesize); { int noiseshift = 0x7ffff8; char data; for (i = 0; i < mos6560->noisesize; i++) { data = 0; if (noiseshift & 0x400000) data |= 0x80; if (noiseshift & 0x100000) data |= 0x40; if (noiseshift & 0x010000) data |= 0x20; if (noiseshift & 0x002000) data |= 0x10; if (noiseshift & 0x000800) data |= 0x08; if (noiseshift & 0x000080) data |= 0x04; if (noiseshift & 0x000010) data |= 0x02; if (noiseshift & 0x000004) data |= 0x01; mos6560->noise[i] = data; if (((noiseshift & 0x400000) == 0) != ((noiseshift & 0x002000) == 0)) noiseshift = (noiseshift << 1) | 1; else noiseshift <<= 1; } } mos6560->tonesize = device->machine->sample_rate / TONE_FREQUENCY_MIN; if (mos6560->tonesize > 0) { mos6560->tone = auto_alloc_array(device->machine, INT16, mos6560->tonesize); for (i = 0; i < mos6560->tonesize; i++) { mos6560->tone[i] = (INT16)(sin (2 * M_PI * i / mos6560->tonesize) * 127 + 0.5); } } else { mos6560->tone = NULL; } }
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mos6560_sound_start - start audio emulation (to be called at device start)
[ "mos6560_sound_start", "-", "start", "audio", "emulation", "(", "to", "be", "called", "at", "device", "start", ")" ]
[ "/* buffer for fastest played sample for 5 second so we have enough data for min 5 second */" ]
[ { "param": "device", "type": "running_device" } ]
{ "returns": [], "raises": [], "params": [ { "identifier": "device", "type": "running_device", "docstring": null, "docstring_tokens": [], "default": null, "is_optional": null } ], "outlier_params": [], "others": [] }
6bc278f7c04d8bb711021d60c335024d3fe28fcd
lofunz/mieme
Reloaded/tags/MAME4iOS 1.3.1Reloaded/src/mame/video/segaic16.c
[ "Unlicense" ]
C
segaic16_palette_init
void
void segaic16_palette_init(int entries) { static const int resistances_normal[6] = { 3900, 2000, 1000, 1000/2, 1000/4, 0 }; static const int resistances_sh[6] = { 3900, 2000, 1000, 1000/2, 1000/4, 470 }; double weights[2][6]; int i; struct palette_info *info = &segaic16_palette; /* compute the number of palette entries */ info->entries = entries; /* compute weight table for regular palette entries */ compute_resistor_weights(0, 255, -1.0, 6, resistances_normal, weights[0], 0, 0, 0, NULL, NULL, 0, 0, 0, NULL, NULL, 0, 0); /* compute weight table for shadow/hilight palette entries */ compute_resistor_weights(0, 255, -1.0, 6, resistances_sh, weights[1], 0, 0, 0, NULL, NULL, 0, 0, 0, NULL, NULL, 0, 0); /* compute R, G, B for each weight */ for (i = 0; i < 32; i++) { int i4 = (i >> 4) & 1; int i3 = (i >> 3) & 1; int i2 = (i >> 2) & 1; int i1 = (i >> 1) & 1; int i0 = (i >> 0) & 1; info->normal[i] = combine_6_weights(weights[0], i0, i1, i2, i3, i4, 0); info->shadow[i] = combine_6_weights(weights[1], i0, i1, i2, i3, i4, 0); info->hilight[i] = combine_6_weights(weights[1], i0, i1, i2, i3, i4, 1); } }
/* Color generation details Each color is made up of 5 bits, connected through one or more resistors like so: Bit 0 = 1 x 3.9K ohm Bit 1 = 1 x 2.0K ohm Bit 2 = 1 x 1.0K ohm Bit 3 = 2 x 1.0K ohm Bit 4 = 4 x 1.0K ohm Another data bit is connected by a tristate buffer to the color output through a 470 ohm resistor. The buffer allows the resistor to have no effect (tristate), halve brightness (pull-down) or double brightness (pull-up). The data bit source is bit 15 of each color RAM entry. */
Color generation details Each color is made up of 5 bits, connected through one or more resistors like so. Another data bit is connected by a tristate buffer to the color output through a 470 ohm resistor. The buffer allows the resistor to have no effect (tristate), halve brightness (pull-down) or double brightness (pull-up). The data bit source is bit 15 of each color RAM entry.
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void segaic16_palette_init(int entries) { static const int resistances_normal[6] = { 3900, 2000, 1000, 1000/2, 1000/4, 0 }; static const int resistances_sh[6] = { 3900, 2000, 1000, 1000/2, 1000/4, 470 }; double weights[2][6]; int i; struct palette_info *info = &segaic16_palette; info->entries = entries; compute_resistor_weights(0, 255, -1.0, 6, resistances_normal, weights[0], 0, 0, 0, NULL, NULL, 0, 0, 0, NULL, NULL, 0, 0); compute_resistor_weights(0, 255, -1.0, 6, resistances_sh, weights[1], 0, 0, 0, NULL, NULL, 0, 0, 0, NULL, NULL, 0, 0); for (i = 0; i < 32; i++) { int i4 = (i >> 4) & 1; int i3 = (i >> 3) & 1; int i2 = (i >> 2) & 1; int i1 = (i >> 1) & 1; int i0 = (i >> 0) & 1; info->normal[i] = combine_6_weights(weights[0], i0, i1, i2, i3, i4, 0); info->shadow[i] = combine_6_weights(weights[1], i0, i1, i2, i3, i4, 0); info->hilight[i] = combine_6_weights(weights[1], i0, i1, i2, i3, i4, 1); } }
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Color generation details Each color is made up of 5 bits, connected through one or more resistors like so:
[ "Color", "generation", "details", "Each", "color", "is", "made", "up", "of", "5", "bits", "connected", "through", "one", "or", "more", "resistors", "like", "so", ":" ]
[ "/* compute the number of palette entries */", "/* compute weight table for regular palette entries */", "/* compute weight table for shadow/hilight palette entries */", "/* compute R, G, B for each weight */" ]
[ { "param": "entries", "type": "int" } ]
{ "returns": [], "raises": [], "params": [ { "identifier": "entries", "type": "int", "docstring": null, "docstring_tokens": [], "default": null, "is_optional": null } ], "outlier_params": [], "others": [] }
6bc278f7c04d8bb711021d60c335024d3fe28fcd
lofunz/mieme
Reloaded/tags/MAME4iOS 1.3.1Reloaded/src/mame/video/segaic16.c
[ "Unlicense" ]
C
segaic16_road_hangon_decode
void
static void segaic16_road_hangon_decode(running_machine *machine, struct road_info *info) { int x, y; const UINT8 *gfx = memory_region(machine, "gfx3"); int len = memory_region_length(machine, "gfx3"); /* allocate memory for the unpacked road data */ info->gfx = auto_alloc_array(machine, UINT8, 256 * 512); /* loop over rows */ for (y = 0; y < 256; y++) { const UINT8 *src = gfx + ((y & 0xff) * 0x40) % len; UINT8 *dst = info->gfx + y * 512; /* loop over columns */ for (x = 0; x < 512; x++) dst[x] = (((src[x/8] >> (~x & 7)) & 1) << 0) | (((src[x/8 + 0x4000] >> (~x & 7)) & 1) << 1); } }
/******************************************************************************************* * * Hang On/Space Harrier-style road chip * * Road RAM: * Offset Bits Usage * 000-1FF ----pp-- -------- road priority versus tilemaps and sprites * ------s- -------- (Hang On only) Stripe coloring enable (1=enable) * ------s- -------- (Space Harrier only) Solid color fill (1=solid, 0=from ROM) * -------m -------- mirror enable (1=enable) * -------- iiiiiiii index for other tables * -------- rrrrrrrr road ROM line select * 200-3FF ----hhhh hhhhhhhh horizontal scroll * 400-5FF --bbbbbb -------- background color (colorset 0) * -------- --bbbbbb background color (colorset 1) * 600-7FF -------- s------- stripe color index (colorset 1) * -------- -s------ stripe color index (colorset 0) * -------- --a----- pixel value 2 color index (colorset 1) * -------- ---a---- pixel value 2 color index (colorset 0) * -------- ----b--- pixel value 1 color index (colorset 1) * -------- -----b-- pixel value 1 color index (colorset 0) * -------- ------c- pixel value 0 color index (colorset 1) * -------- -------c pixel value 0 color index (colorset 0) * * Logic: * First, the scanline is used to index into the table at 000-1FF * * The index is taken from the low 8 bits of the table value from 000-1FF * * The horizontal scroll value is looked up using the index in the table at * 200-3FF * * The background color information is looked up using the index in the table at 400-5FF. * * The pixel color information is looked up using the index in the table at 600-7FF. * *******************************************************************************************/
Hang On/Space Harrier-style road chip First, the scanline is used to index into the table at 000-1FF The index is taken from the low 8 bits of the table value from 000-1FF The horizontal scroll value is looked up using the index in the table at 200-3FF The background color information is looked up using the index in the table at 400-5FF. The pixel color information is looked up using the index in the table at 600-7FF.
[ "Hang", "On", "/", "Space", "Harrier", "-", "style", "road", "chip", "First", "the", "scanline", "is", "used", "to", "index", "into", "the", "table", "at", "000", "-", "1FF", "The", "index", "is", "taken", "from", "the", "low", "8", "bits", "of", "the", "table", "value", "from", "000", "-", "1FF", "The", "horizontal", "scroll", "value", "is", "looked", "up", "using", "the", "index", "in", "the", "table", "at", "200", "-", "3FF", "The", "background", "color", "information", "is", "looked", "up", "using", "the", "index", "in", "the", "table", "at", "400", "-", "5FF", ".", "The", "pixel", "color", "information", "is", "looked", "up", "using", "the", "index", "in", "the", "table", "at", "600", "-", "7FF", "." ]
static void segaic16_road_hangon_decode(running_machine *machine, struct road_info *info) { int x, y; const UINT8 *gfx = memory_region(machine, "gfx3"); int len = memory_region_length(machine, "gfx3"); info->gfx = auto_alloc_array(machine, UINT8, 256 * 512); for (y = 0; y < 256; y++) { const UINT8 *src = gfx + ((y & 0xff) * 0x40) % len; UINT8 *dst = info->gfx + y * 512; for (x = 0; x < 512; x++) dst[x] = (((src[x/8] >> (~x & 7)) & 1) << 0) | (((src[x/8 + 0x4000] >> (~x & 7)) & 1) << 1); } }
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Hang On/Space Harrier-style road chip
[ "Hang", "On", "/", "Space", "Harrier", "-", "style", "road", "chip" ]
[ "/* allocate memory for the unpacked road data */", "/* loop over rows */", "/* loop over columns */" ]
[ { "param": "machine", "type": "running_machine" }, { "param": "info", "type": "struct road_info" } ]
{ "returns": [], "raises": [], "params": [ { "identifier": "machine", "type": "running_machine", "docstring": null, "docstring_tokens": [], "default": null, "is_optional": null }, { "identifier": "info", "type": "struct road_info", "docstring": null, "docstring_tokens": [], "default": null, "is_optional": null } ], "outlier_params": [], "others": [] }
6bc278f7c04d8bb711021d60c335024d3fe28fcd
lofunz/mieme
Reloaded/tags/MAME4iOS 1.3.1Reloaded/src/mame/video/segaic16.c
[ "Unlicense" ]
C
segaic16_road_outrun_decode
void
static void segaic16_road_outrun_decode(running_machine *machine, struct road_info *info) { int x, y; const UINT8 *gfx = memory_region(machine, "gfx3"); int len = memory_region_length(machine, "gfx3"); /* allocate memory for the unpacked road data */ info->gfx = auto_alloc_array(machine, UINT8, (256 * 2 + 1) * 512); /* loop over rows */ for (y = 0; y < 256 * 2; y++) { const UINT8 *src = gfx + ((y & 0xff) * 0x40 + (y >> 8) * 0x8000) % len; UINT8 *dst = info->gfx + y * 512; /* loop over columns */ for (x = 0; x < 512; x++) { dst[x] = (((src[x/8] >> (~x & 7)) & 1) << 0) | (((src[x/8 + 0x4000] >> (~x & 7)) & 1) << 1); /* pre-mark road data in the "stripe" area with a high bit */ if (x >= 256-8 && x < 256 && dst[x] == 3) dst[x] |= 4; } } /* set up a dummy road in the last entry */ memset(info->gfx + 256 * 2 * 512, 3, 512); }
/******************************************************************************************* * * Out Run/X-Board-style road chip * * Road control register: * Bits Usage * -------- -----d-- (X-board only) Direct scanline mode (1) or indirect mode (0) * -------- ------pp Road enable/priorities: * 0 = road 0 only visible * 1 = both roads visible, road 0 has priority * 2 = both roads visible, road 1 has priority * 3 = road 1 only visible * * Road RAM: * Offset Bits Usage * 000-1FF ----s--- -------- Road 0: Solid fill (1) or ROM fill * -------- -ccccccc Road 0: Solid color (if solid fill) * -------i iiiiiiii Road 0: Index for other tables (if in indirect mode) * -------r rrrrrrr- Road 0: Road ROM line select * 200-3FF ----s--- -------- Road 1: Solid fill (1) or ROM fill * -------- -ccccccc Road 1: Solid color (if solid fill) * -------i iiiiiiii Road 1: Index for other tables (if in indirect mode) * -------r rrrrrrr- Road 1: Road ROM line select * 400-7FF ----hhhh hhhhhhhh Road 0: horizontal scroll * 800-BFF ----hhhh hhhhhhhh Road 1: horizontal scroll * C00-FFF ----bbbb -------- Background color index * -------- s------- Road 1: stripe color index * -------- -a------ Road 1: pixel value 2 color index * -------- --b----- Road 1: pixel value 1 color index * -------- ---c---- Road 1: pixel value 0 color index * -------- ----s--- Road 0: stripe color index * -------- -----a-- Road 0: pixel value 2 color index * -------- ------b- Road 0: pixel value 1 color index * -------- -------c Road 0: pixel value 0 color index * * Logic: * First, the scanline is used to index into the tables at 000-1FF/200-3FF * - if solid fill, the background is filled with the specified color index * - otherwise, the remaining tables are used * * If indirect mode is selected, the index is taken from the low 9 bits of the * table value from 000-1FF/200-3FF * If direct scanline mode is selected, the index is set equal to the scanline * for road 0, or the scanline + 256 for road 1 * * The horizontal scroll value is looked up using the index in the tables at * 400-7FF/800-BFF * * The color information is looked up using the index in the table at C00-FFF. Note * that the same table is used for both roads. * * * Out Run road priorities are controlled by a PAL that maps as indicated below. * This was used to generate the priority_map. It is assumed that X-board is the * same, though this logic is locked inside a Sega custom. * * RRC0 = CENTA & (RDA == 3) & !RRC2 * | CENTB & (RDB == 3) & RRC2 * | (RDA == 1) & !RRC2 * | (RDB == 1) & RRC2 * * RRC1 = CENTA & (RDA == 3) & !RRC2 * | CENTB & (RDB == 3) & RRC2 * | (RDA == 2) & !RRC2 * | (RDB == 2) & RRC2 * * RRC2 = !/HSYNC & IIQ * | (CTRL == 3) * | !CENTA & (RDA == 3) & !CENTB & (RDB == 3) & (CTRL == 2) * | CENTB & (RDB == 3) & (CTRL == 2) * | !CENTA & (RDA == 3) & !M2 & (CTRL == 2) * | !CENTA & (RDA == 3) & !M3 & (CTRL == 2) * | !M0 & (RDB == 0) & (CTRL == 2) * | !M1 & (RDB == 0) & (CTRL == 2) * | !CENTA & (RDA == 3) & CENTB & (RDB == 3) & (CTRL == 1) * | !M0 & CENTB & (RDB == 3) & (CTRL == 1) * | !M1 & CENTB & (RDB == 3) & (CTRL == 1) * | !CENTA & M0 & (RDB == 0) & (CTRL == 1) * | !CENTA & M1 & (RDB == 0) & (CTRL == 1) * | !CENTA & (RDA == 3) & (RDB == 1) & (CTRL == 1) * | !CENTA & (RDA == 3) & (RDB == 2) & (CTRL == 1) * * RRC3 = VA11 & VB11 * | VA11 & (CTRL == 0) * | (CTRL == 3) & VB11 * * RRC4 = !CENTA & (RDA == 3) & !CENTB & (RDB == 3) * | VA11 & VB11 * | VA11 & (CTRL == 0) * | (CTRL == 3) & VB11 * | !CENTB & (RDB == 3) & (CTRL == 3) * | !CENTA & (RDA == 3) & (CTRL == 0) * *******************************************************************************************/
Out Run/X-Board-style road chip Road control register: Bits Usage d-- (X-board only) Direct scanline mode (1) or indirect mode (0) pp Road enable/priorities: 0 = road 0 only visible 1 = both roads visible, road 0 has priority 2 = both roads visible, road 1 has priority 3 = road 1 only visible First, the scanline is used to index into the tables at 000-1FF/200-3FF - if solid fill, the background is filled with the specified color index - otherwise, the remaining tables are used If indirect mode is selected, the index is taken from the low 9 bits of the table value from 000-1FF/200-3FF If direct scanline mode is selected, the index is set equal to the scanline for road 0, or the scanline + 256 for road 1 The horizontal scroll value is looked up using the index in the tables at 400-7FF/800-BFF The color information is looked up using the index in the table at C00-FFF. Note that the same table is used for both roads. Out Run road priorities are controlled by a PAL that maps as indicated below. This was used to generate the priority_map. It is assumed that X-board is the same, though this logic is locked inside a Sega custom.
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static void segaic16_road_outrun_decode(running_machine *machine, struct road_info *info) { int x, y; const UINT8 *gfx = memory_region(machine, "gfx3"); int len = memory_region_length(machine, "gfx3"); info->gfx = auto_alloc_array(machine, UINT8, (256 * 2 + 1) * 512); for (y = 0; y < 256 * 2; y++) { const UINT8 *src = gfx + ((y & 0xff) * 0x40 + (y >> 8) * 0x8000) % len; UINT8 *dst = info->gfx + y * 512; for (x = 0; x < 512; x++) { dst[x] = (((src[x/8] >> (~x & 7)) & 1) << 0) | (((src[x/8 + 0x4000] >> (~x & 7)) & 1) << 1); if (x >= 256-8 && x < 256 && dst[x] == 3) dst[x] |= 4; } } memset(info->gfx + 256 * 2 * 512, 3, 512); }
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Out Run/X-Board-style road chip
[ "Out", "Run", "/", "X", "-", "Board", "-", "style", "road", "chip" ]
[ "/* allocate memory for the unpacked road data */", "/* loop over rows */", "/* loop over columns */", "/* pre-mark road data in the \"stripe\" area with a high bit */", "/* set up a dummy road in the last entry */" ]
[ { "param": "machine", "type": "running_machine" }, { "param": "info", "type": "struct road_info" } ]
{ "returns": [], "raises": [], "params": [ { "identifier": "machine", "type": "running_machine", "docstring": null, "docstring_tokens": [], "default": null, "is_optional": null }, { "identifier": "info", "type": "struct road_info", "docstring": null, "docstring_tokens": [], "default": null, "is_optional": null } ], "outlier_params": [], "others": [] }
908ba337e95781df892f5f60b9b28b6f64a544d5
lofunz/mieme
Reloaded/trunk/src/emu/cpu/sh2/sh2drc.c
[ "Unlicense" ]
C
cfunc_printf_probe
void
static void cfunc_printf_probe(void *param) { sh2_state *sh2 = (sh2_state *)param; UINT32 pc = sh2->pc; printf(" PC=%08X r0=%08X r1=%08X r2=%08X\n", pc, (UINT32)sh2->r[0], (UINT32)sh2->r[1], (UINT32)sh2->r[2]); printf(" r3=%08X r4=%08X r5=%08X r6=%08X\n", (UINT32)sh2->r[3], (UINT32)sh2->r[4], (UINT32)sh2->r[5], (UINT32)sh2->r[6]); printf(" r7=%08X r8=%08X r9=%08X r10=%08X\n", (UINT32)sh2->r[7], (UINT32)sh2->r[8], (UINT32)sh2->r[9], (UINT32)sh2->r[10]); printf(" r11=%08X r12=%08X r13=%08X r14=%08X\n", (UINT32)sh2->r[11], (UINT32)sh2->r[12], (UINT32)sh2->r[13], (UINT32)sh2->r[14]); printf(" r15=%08X macl=%08X mach=%08X gbr=%08X\n", (UINT32)sh2->r[15], (UINT32)sh2->macl, (UINT32)sh2->mach, (UINT32)sh2->gbr); printf(" evec %x irqsr %x pc=%08x\n", (UINT32)sh2->evec, (UINT32)sh2->irqsr, (UINT32)sh2->pc); }
/*------------------------------------------------- cfunc_printf_probe - print the current CPU state and return -------------------------------------------------*/
print the current CPU state and return
[ "print", "the", "current", "CPU", "state", "and", "return" ]
static void cfunc_printf_probe(void *param) { sh2_state *sh2 = (sh2_state *)param; UINT32 pc = sh2->pc; printf(" PC=%08X r0=%08X r1=%08X r2=%08X\n", pc, (UINT32)sh2->r[0], (UINT32)sh2->r[1], (UINT32)sh2->r[2]); printf(" r3=%08X r4=%08X r5=%08X r6=%08X\n", (UINT32)sh2->r[3], (UINT32)sh2->r[4], (UINT32)sh2->r[5], (UINT32)sh2->r[6]); printf(" r7=%08X r8=%08X r9=%08X r10=%08X\n", (UINT32)sh2->r[7], (UINT32)sh2->r[8], (UINT32)sh2->r[9], (UINT32)sh2->r[10]); printf(" r11=%08X r12=%08X r13=%08X r14=%08X\n", (UINT32)sh2->r[11], (UINT32)sh2->r[12], (UINT32)sh2->r[13], (UINT32)sh2->r[14]); printf(" r15=%08X macl=%08X mach=%08X gbr=%08X\n", (UINT32)sh2->r[15], (UINT32)sh2->macl, (UINT32)sh2->mach, (UINT32)sh2->gbr); printf(" evec %x irqsr %x pc=%08x\n", (UINT32)sh2->evec, (UINT32)sh2->irqsr, (UINT32)sh2->pc); }
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cfunc_printf_probe - print the current CPU state and return
[ "cfunc_printf_probe", "-", "print", "the", "current", "CPU", "state", "and", "return" ]
[]
[ { "param": "param", "type": "void" } ]
{ "returns": [], "raises": [], "params": [ { "identifier": "param", "type": "void", "docstring": null, "docstring_tokens": [], "default": null, "is_optional": null } ], "outlier_params": [], "others": [] }
908ba337e95781df892f5f60b9b28b6f64a544d5
lofunz/mieme
Reloaded/trunk/src/emu/cpu/sh2/sh2drc.c
[ "Unlicense" ]
C
code_flush_cache
void
static void code_flush_cache(sh2_state *sh2) { drcuml_state *drcuml = sh2->drcuml; /* empty the transient cache contents */ drcuml_reset(drcuml); /* generate the entry point and out-of-cycles handlers */ static_generate_nocode_handler(sh2); static_generate_out_of_cycles(sh2); static_generate_entry_point(sh2); /* add subroutines for memory accesses */ static_generate_memory_accessor(sh2, 1, FALSE, "read8", &sh2->read8); static_generate_memory_accessor(sh2, 1, TRUE, "write8", &sh2->write8); static_generate_memory_accessor(sh2, 2, FALSE, "read16", &sh2->read16); static_generate_memory_accessor(sh2, 2, TRUE, "write16", &sh2->write16); static_generate_memory_accessor(sh2, 4, FALSE, "read32", &sh2->read32); static_generate_memory_accessor(sh2, 4, TRUE, "write32", &sh2->write32); sh2->cache_dirty = FALSE; }
/*------------------------------------------------- code_flush_cache - flush the cache and regenerate static code -------------------------------------------------*/
flush the cache and regenerate static code
[ "flush", "the", "cache", "and", "regenerate", "static", "code" ]
static void code_flush_cache(sh2_state *sh2) { drcuml_state *drcuml = sh2->drcuml; drcuml_reset(drcuml); static_generate_nocode_handler(sh2); static_generate_out_of_cycles(sh2); static_generate_entry_point(sh2); static_generate_memory_accessor(sh2, 1, FALSE, "read8", &sh2->read8); static_generate_memory_accessor(sh2, 1, TRUE, "write8", &sh2->write8); static_generate_memory_accessor(sh2, 2, FALSE, "read16", &sh2->read16); static_generate_memory_accessor(sh2, 2, TRUE, "write16", &sh2->write16); static_generate_memory_accessor(sh2, 4, FALSE, "read32", &sh2->read32); static_generate_memory_accessor(sh2, 4, TRUE, "write32", &sh2->write32); sh2->cache_dirty = FALSE; }
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code_flush_cache - flush the cache and regenerate static code
[ "code_flush_cache", "-", "flush", "the", "cache", "and", "regenerate", "static", "code" ]
[ "/* empty the transient cache contents */", "/* generate the entry point and out-of-cycles handlers */", "/* add subroutines for memory accesses */" ]
[ { "param": "sh2", "type": "sh2_state" } ]
{ "returns": [], "raises": [], "params": [ { "identifier": "sh2", "type": "sh2_state", "docstring": null, "docstring_tokens": [], "default": null, "is_optional": null } ], "outlier_params": [], "others": [] }
908ba337e95781df892f5f60b9b28b6f64a544d5
lofunz/mieme
Reloaded/trunk/src/emu/cpu/sh2/sh2drc.c
[ "Unlicense" ]
C
code_compile_block
void
static void code_compile_block(sh2_state *sh2, UINT8 mode, offs_t pc) { drcuml_state *drcuml = sh2->drcuml; compiler_state compiler = { 0 }; const opcode_desc *seqhead, *seqlast; const opcode_desc *desclist; int override = FALSE; drcuml_block *block; jmp_buf errorbuf; profiler_mark_start(PROFILER_DRC_COMPILE); /* get a description of this sequence */ desclist = drcfe_describe_code(sh2->drcfe, pc); if (LOG_UML || LOG_NATIVE) log_opcode_desc(drcuml, desclist, 0); /* if we get an error back, flush the cache and try again */ if (setjmp(errorbuf) != 0) code_flush_cache(sh2); /* start the block */ block = drcuml_block_begin(drcuml, 4096, &errorbuf); /* loop until we get through all instruction sequences */ for (seqhead = desclist; seqhead != NULL; seqhead = seqlast->next) { const opcode_desc *curdesc; UINT32 nextpc; /* add a code log entry */ if (LOG_UML) UML_COMMENT(block, "-------------------------"); // comment /* determine the last instruction in this sequence */ for (seqlast = seqhead; seqlast != NULL; seqlast = seqlast->next) if (seqlast->flags & OPFLAG_END_SEQUENCE) break; assert(seqlast != NULL); /* if we don't have a hash for this mode/pc, or if we are overriding all, add one */ if (override || !drcuml_hash_exists(drcuml, mode, seqhead->pc)) UML_HASH(block, mode, seqhead->pc); // hash mode,pc /* if we already have a hash, and this is the first sequence, assume that we */ /* are recompiling due to being out of sync and allow future overrides */ else if (seqhead == desclist) { override = TRUE; UML_HASH(block, mode, seqhead->pc); // hash mode,pc } /* otherwise, redispatch to that fixed PC and skip the rest of the processing */ else { UML_LABEL(block, seqhead->pc | 0x80000000); // label seqhead->pc | 0x80000000 UML_HASHJMP(block, IMM(0), IMM(seqhead->pc), sh2->nocode); // hashjmp <mode>,seqhead->pc,nocode continue; } /* validate this code block if we're not pointing into ROM */ if (memory_get_write_ptr(sh2->program, seqhead->physpc) != NULL) generate_checksum_block(sh2, block, &compiler, seqhead, seqlast); /* label this instruction, if it may be jumped to locally */ if (seqhead->flags & OPFLAG_IS_BRANCH_TARGET) { UML_LABEL(block, seqhead->pc | 0x80000000); // label seqhead->pc | 0x80000000 } /* iterate over instructions in the sequence and compile them */ for (curdesc = seqhead; curdesc != seqlast->next; curdesc = curdesc->next) { generate_sequence_instruction(sh2, block, &compiler, curdesc); } /* if we need to return to the start, do it */ if (seqlast->flags & OPFLAG_RETURN_TO_START) { nextpc = pc; } /* otherwise we just go to the next instruction */ else { nextpc = seqlast->pc + (seqlast->skipslots + 1) * 2; } /* count off cycles and go there */ generate_update_cycles(sh2, block, &compiler, IMM(nextpc), TRUE); // <subtract cycles> /* SH2 has no modes */ if (seqlast->next == NULL || seqlast->next->pc != nextpc) { UML_HASHJMP(block, IMM(0), IMM(nextpc), sh2->nocode); } // hashjmp <mode>,nextpc,nocode } /* end the sequence */ drcuml_block_end(block); profiler_mark_end(); }
/*------------------------------------------------- code_compile_block - compile a block of the given mode at the specified pc -------------------------------------------------*/
compile a block of the given mode at the specified pc
[ "compile", "a", "block", "of", "the", "given", "mode", "at", "the", "specified", "pc" ]
static void code_compile_block(sh2_state *sh2, UINT8 mode, offs_t pc) { drcuml_state *drcuml = sh2->drcuml; compiler_state compiler = { 0 }; const opcode_desc *seqhead, *seqlast; const opcode_desc *desclist; int override = FALSE; drcuml_block *block; jmp_buf errorbuf; profiler_mark_start(PROFILER_DRC_COMPILE); desclist = drcfe_describe_code(sh2->drcfe, pc); if (LOG_UML || LOG_NATIVE) log_opcode_desc(drcuml, desclist, 0); if (setjmp(errorbuf) != 0) code_flush_cache(sh2); block = drcuml_block_begin(drcuml, 4096, &errorbuf); for (seqhead = desclist; seqhead != NULL; seqhead = seqlast->next) { const opcode_desc *curdesc; UINT32 nextpc; if (LOG_UML) UML_COMMENT(block, "-------------------------"); for (seqlast = seqhead; seqlast != NULL; seqlast = seqlast->next) if (seqlast->flags & OPFLAG_END_SEQUENCE) break; assert(seqlast != NULL); if (override || !drcuml_hash_exists(drcuml, mode, seqhead->pc)) UML_HASH(block, mode, seqhead->pc); else if (seqhead == desclist) { override = TRUE; UML_HASH(block, mode, seqhead->pc); } else { UML_LABEL(block, seqhead->pc | 0x80000000); UML_HASHJMP(block, IMM(0), IMM(seqhead->pc), sh2->nocode); continue; } if (memory_get_write_ptr(sh2->program, seqhead->physpc) != NULL) generate_checksum_block(sh2, block, &compiler, seqhead, seqlast); if (seqhead->flags & OPFLAG_IS_BRANCH_TARGET) { UML_LABEL(block, seqhead->pc | 0x80000000); } for (curdesc = seqhead; curdesc != seqlast->next; curdesc = curdesc->next) { generate_sequence_instruction(sh2, block, &compiler, curdesc); } if (seqlast->flags & OPFLAG_RETURN_TO_START) { nextpc = pc; } else { nextpc = seqlast->pc + (seqlast->skipslots + 1) * 2; } generate_update_cycles(sh2, block, &compiler, IMM(nextpc), TRUE); if (seqlast->next == NULL || seqlast->next->pc != nextpc) { UML_HASHJMP(block, IMM(0), IMM(nextpc), sh2->nocode); } } drcuml_block_end(block); profiler_mark_end(); }
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code_compile_block - compile a block of the given mode at the specified pc
[ "code_compile_block", "-", "compile", "a", "block", "of", "the", "given", "mode", "at", "the", "specified", "pc" ]
[ "/* get a description of this sequence */", "/* if we get an error back, flush the cache and try again */", "/* start the block */", "/* loop until we get through all instruction sequences */", "/* add a code log entry */", "// comment\r", "/* determine the last instruction in this sequence */", "/* if we don't have a hash for this mode/pc, or if we are overriding all, add one */", "// hash mode,pc\r", "/* if we already have a hash, and this is the first sequence, assume that we */", "/* are recompiling due to being out of sync and allow future overrides */", "// hash mode,pc\r", "/* otherwise, redispatch to that fixed PC and skip the rest of the processing */", "// label seqhead->pc | 0x80000000\r", "// hashjmp <mode>,seqhead->pc,nocode\r", "/* validate this code block if we're not pointing into ROM */", "/* label this instruction, if it may be jumped to locally */", "// label seqhead->pc | 0x80000000\r", "/* iterate over instructions in the sequence and compile them */", "/* if we need to return to the start, do it */", "/* otherwise we just go to the next instruction */", "/* count off cycles and go there */", "// <subtract cycles>\r", "/* SH2 has no modes */", "// hashjmp <mode>,nextpc,nocode\r", "/* end the sequence */" ]
[ { "param": "sh2", "type": "sh2_state" }, { "param": "mode", "type": "UINT8" }, { "param": "pc", "type": "offs_t" } ]
{ "returns": [], "raises": [], "params": [ { "identifier": "sh2", "type": "sh2_state", "docstring": null, "docstring_tokens": [], "default": null, "is_optional": null }, { "identifier": "mode", "type": "UINT8", "docstring": null, "docstring_tokens": [], "default": null, "is_optional": null }, { "identifier": "pc", "type": "offs_t", "docstring": null, "docstring_tokens": [], "default": null, "is_optional": null } ], "outlier_params": [], "others": [] }
908ba337e95781df892f5f60b9b28b6f64a544d5
lofunz/mieme
Reloaded/trunk/src/emu/cpu/sh2/sh2drc.c
[ "Unlicense" ]
C
static_generate_nocode_handler
void
static void static_generate_nocode_handler(sh2_state *sh2) { drcuml_state *drcuml = sh2->drcuml; drcuml_block *block; jmp_buf errorbuf; /* if we get an error back, we're screwed */ if (setjmp(errorbuf) != 0) fatalerror("Unrecoverable error in static_generate_nocode_handler"); /* begin generating */ block = drcuml_block_begin(drcuml, 10, &errorbuf); /* generate a hash jump via the current mode and PC */ alloc_handle(drcuml, &sh2->nocode, "nocode"); UML_HANDLE(block, sh2->nocode); // handle nocode UML_GETEXP(block, IREG(0)); // getexp i0 UML_MOV(block, MEM(&sh2->pc), IREG(0)); // mov [pc],i0 save_fast_iregs(sh2, block); UML_EXIT(block, IMM(EXECUTE_MISSING_CODE)); // exit EXECUTE_MISSING_CODE drcuml_block_end(block); }
/*------------------------------------------------- static_generate_nocode_handler - generate an exception handler for "out of code" -------------------------------------------------*/
generate an exception handler for "out of code"
[ "generate", "an", "exception", "handler", "for", "\"", "out", "of", "code", "\"" ]
static void static_generate_nocode_handler(sh2_state *sh2) { drcuml_state *drcuml = sh2->drcuml; drcuml_block *block; jmp_buf errorbuf; if (setjmp(errorbuf) != 0) fatalerror("Unrecoverable error in static_generate_nocode_handler"); block = drcuml_block_begin(drcuml, 10, &errorbuf); alloc_handle(drcuml, &sh2->nocode, "nocode"); UML_HANDLE(block, sh2->nocode); UML_GETEXP(block, IREG(0)); UML_MOV(block, MEM(&sh2->pc), IREG(0)); save_fast_iregs(sh2, block); UML_EXIT(block, IMM(EXECUTE_MISSING_CODE)); drcuml_block_end(block); }
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static_generate_nocode_handler - generate an exception handler for "out of code"
[ "static_generate_nocode_handler", "-", "generate", "an", "exception", "handler", "for", "\"", "out", "of", "code", "\"" ]
[ "/* if we get an error back, we're screwed */", "/* begin generating */", "/* generate a hash jump via the current mode and PC */", "// handle nocode\r", "// getexp i0\r", "// mov [pc],i0\r", "// exit EXECUTE_MISSING_CODE\r" ]
[ { "param": "sh2", "type": "sh2_state" } ]
{ "returns": [], "raises": [], "params": [ { "identifier": "sh2", "type": "sh2_state", "docstring": null, "docstring_tokens": [], "default": null, "is_optional": null } ], "outlier_params": [], "others": [] }
908ba337e95781df892f5f60b9b28b6f64a544d5
lofunz/mieme
Reloaded/trunk/src/emu/cpu/sh2/sh2drc.c
[ "Unlicense" ]
C
static_generate_out_of_cycles
void
static void static_generate_out_of_cycles(sh2_state *sh2) { drcuml_state *drcuml = sh2->drcuml; drcuml_block *block; jmp_buf errorbuf; /* if we get an error back, we're screwed */ if (setjmp(errorbuf) != 0) fatalerror("Unrecoverable error in static_generate_out_of_cycles"); /* begin generating */ block = drcuml_block_begin(drcuml, 10, &errorbuf); /* generate a hash jump via the current mode and PC */ alloc_handle(drcuml, &sh2->out_of_cycles, "out_of_cycles"); UML_HANDLE(block, sh2->out_of_cycles); // handle out_of_cycles UML_GETEXP(block, IREG(0)); // getexp i0 UML_MOV(block, MEM(&sh2->pc), IREG(0)); // mov <pc>,i0 save_fast_iregs(sh2,block); UML_EXIT(block, IMM(EXECUTE_OUT_OF_CYCLES)); // exit EXECUTE_OUT_OF_CYCLES drcuml_block_end(block); }
/*------------------------------------------------- static_generate_out_of_cycles - generate an out of cycles exception handler -------------------------------------------------*/
generate an out of cycles exception handler
[ "generate", "an", "out", "of", "cycles", "exception", "handler" ]
static void static_generate_out_of_cycles(sh2_state *sh2) { drcuml_state *drcuml = sh2->drcuml; drcuml_block *block; jmp_buf errorbuf; if (setjmp(errorbuf) != 0) fatalerror("Unrecoverable error in static_generate_out_of_cycles"); block = drcuml_block_begin(drcuml, 10, &errorbuf); alloc_handle(drcuml, &sh2->out_of_cycles, "out_of_cycles"); UML_HANDLE(block, sh2->out_of_cycles); UML_GETEXP(block, IREG(0)); UML_MOV(block, MEM(&sh2->pc), IREG(0)); save_fast_iregs(sh2,block); UML_EXIT(block, IMM(EXECUTE_OUT_OF_CYCLES)); drcuml_block_end(block); }
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static_generate_out_of_cycles - generate an out of cycles exception handler
[ "static_generate_out_of_cycles", "-", "generate", "an", "out", "of", "cycles", "exception", "handler" ]
[ "/* if we get an error back, we're screwed */", "/* begin generating */", "/* generate a hash jump via the current mode and PC */", "// handle out_of_cycles\r", "// getexp i0\r", "// mov <pc>,i0\r", "// exit EXECUTE_OUT_OF_CYCLES\r" ]
[ { "param": "sh2", "type": "sh2_state" } ]
{ "returns": [], "raises": [], "params": [ { "identifier": "sh2", "type": "sh2_state", "docstring": null, "docstring_tokens": [], "default": null, "is_optional": null } ], "outlier_params": [], "others": [] }
908ba337e95781df892f5f60b9b28b6f64a544d5
lofunz/mieme
Reloaded/trunk/src/emu/cpu/sh2/sh2drc.c
[ "Unlicense" ]
C
log_desc_flags_to_string
char
static const char *log_desc_flags_to_string(UINT32 flags) { static char tempbuf[30]; char *dest = tempbuf; /* branches */ if (flags & OPFLAG_IS_UNCONDITIONAL_BRANCH) *dest++ = 'U'; else if (flags & OPFLAG_IS_CONDITIONAL_BRANCH) *dest++ = 'C'; else *dest++ = '.'; /* intrablock branches */ *dest++ = (flags & OPFLAG_INTRABLOCK_BRANCH) ? 'i' : '.'; /* branch targets */ *dest++ = (flags & OPFLAG_IS_BRANCH_TARGET) ? 'B' : '.'; /* delay slots */ *dest++ = (flags & OPFLAG_IN_DELAY_SLOT) ? 'D' : '.'; /* exceptions */ if (flags & OPFLAG_WILL_CAUSE_EXCEPTION) *dest++ = 'E'; else if (flags & OPFLAG_CAN_CAUSE_EXCEPTION) *dest++ = 'e'; else *dest++ = '.'; /* read/write */ if (flags & OPFLAG_READS_MEMORY) *dest++ = 'R'; else if (flags & OPFLAG_WRITES_MEMORY) *dest++ = 'W'; else *dest++ = '.'; /* TLB validation */ *dest++ = (flags & OPFLAG_VALIDATE_TLB) ? 'V' : '.'; /* TLB modification */ *dest++ = (flags & OPFLAG_MODIFIES_TRANSLATION) ? 'T' : '.'; /* redispatch */ *dest++ = (flags & OPFLAG_REDISPATCH) ? 'R' : '.'; return tempbuf; }
/*------------------------------------------------- log_desc_flags_to_string - generate a string representing the instruction description flags -------------------------------------------------*/
generate a string representing the instruction description flags
[ "generate", "a", "string", "representing", "the", "instruction", "description", "flags" ]
static const char *log_desc_flags_to_string(UINT32 flags) { static char tempbuf[30]; char *dest = tempbuf; if (flags & OPFLAG_IS_UNCONDITIONAL_BRANCH) *dest++ = 'U'; else if (flags & OPFLAG_IS_CONDITIONAL_BRANCH) *dest++ = 'C'; else *dest++ = '.'; *dest++ = (flags & OPFLAG_INTRABLOCK_BRANCH) ? 'i' : '.'; *dest++ = (flags & OPFLAG_IS_BRANCH_TARGET) ? 'B' : '.'; *dest++ = (flags & OPFLAG_IN_DELAY_SLOT) ? 'D' : '.'; if (flags & OPFLAG_WILL_CAUSE_EXCEPTION) *dest++ = 'E'; else if (flags & OPFLAG_CAN_CAUSE_EXCEPTION) *dest++ = 'e'; else *dest++ = '.'; if (flags & OPFLAG_READS_MEMORY) *dest++ = 'R'; else if (flags & OPFLAG_WRITES_MEMORY) *dest++ = 'W'; else *dest++ = '.'; *dest++ = (flags & OPFLAG_VALIDATE_TLB) ? 'V' : '.'; *dest++ = (flags & OPFLAG_MODIFIES_TRANSLATION) ? 'T' : '.'; *dest++ = (flags & OPFLAG_REDISPATCH) ? 'R' : '.'; return tempbuf; }
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log_desc_flags_to_string - generate a string representing the instruction description flags
[ "log_desc_flags_to_string", "-", "generate", "a", "string", "representing", "the", "instruction", "description", "flags" ]
[ "/* branches */", "/* intrablock branches */", "/* branch targets */", "/* delay slots */", "/* exceptions */", "/* read/write */", "/* TLB validation */", "/* TLB modification */", "/* redispatch */" ]
[ { "param": "flags", "type": "UINT32" } ]
{ "returns": [], "raises": [], "params": [ { "identifier": "flags", "type": "UINT32", "docstring": null, "docstring_tokens": [], "default": null, "is_optional": null } ], "outlier_params": [], "others": [] }
908ba337e95781df892f5f60b9b28b6f64a544d5
lofunz/mieme
Reloaded/trunk/src/emu/cpu/sh2/sh2drc.c
[ "Unlicense" ]
C
log_register_list
void
static void log_register_list(drcuml_state *drcuml, const char *string, const UINT32 *reglist, const UINT32 *regnostarlist) { int count = 0; int regnum; /* skip if nothing */ if (reglist[0] == 0 && reglist[1] == 0 && reglist[2] == 0) return; drcuml_log_printf(drcuml, "[%s:", string); for (regnum = 0; regnum < 16; regnum++) { if (reglist[0] & REGFLAG_R(regnum)) { drcuml_log_printf(drcuml, "%sr%d", (count++ == 0) ? "" : ",", regnum); if (regnostarlist != NULL && !(regnostarlist[0] & REGFLAG_R(regnum))) drcuml_log_printf(drcuml, "*"); } } if (reglist[1] & REGFLAG_PR) { drcuml_log_printf(drcuml, "%spr", (count++ == 0) ? "" : ","); if (regnostarlist != NULL && !(regnostarlist[1] & REGFLAG_PR)) drcuml_log_printf(drcuml, "*"); } if (reglist[1] & REGFLAG_SR) { drcuml_log_printf(drcuml, "%ssr", (count++ == 0) ? "" : ","); if (regnostarlist != NULL && !(regnostarlist[1] & REGFLAG_SR)) drcuml_log_printf(drcuml, "*"); } if (reglist[1] & REGFLAG_MACL) { drcuml_log_printf(drcuml, "%smacl", (count++ == 0) ? "" : ","); if (regnostarlist != NULL && !(regnostarlist[1] & REGFLAG_MACL)) drcuml_log_printf(drcuml, "*"); } if (reglist[1] & REGFLAG_MACH) { drcuml_log_printf(drcuml, "%smach", (count++ == 0) ? "" : ","); if (regnostarlist != NULL && !(regnostarlist[1] & REGFLAG_MACH)) drcuml_log_printf(drcuml, "*"); } if (reglist[1] & REGFLAG_GBR) { drcuml_log_printf(drcuml, "%sgbr", (count++ == 0) ? "" : ","); if (regnostarlist != NULL && !(regnostarlist[1] & REGFLAG_GBR)) drcuml_log_printf(drcuml, "*"); } if (reglist[1] & REGFLAG_VBR) { drcuml_log_printf(drcuml, "%svbr", (count++ == 0) ? "" : ","); if (regnostarlist != NULL && !(regnostarlist[1] & REGFLAG_VBR)) drcuml_log_printf(drcuml, "*"); } drcuml_log_printf(drcuml, "] "); }
/*------------------------------------------------- log_register_list - log a list of GPR registers -------------------------------------------------*/
log a list of GPR registers
[ "log", "a", "list", "of", "GPR", "registers" ]
static void log_register_list(drcuml_state *drcuml, const char *string, const UINT32 *reglist, const UINT32 *regnostarlist) { int count = 0; int regnum; if (reglist[0] == 0 && reglist[1] == 0 && reglist[2] == 0) return; drcuml_log_printf(drcuml, "[%s:", string); for (regnum = 0; regnum < 16; regnum++) { if (reglist[0] & REGFLAG_R(regnum)) { drcuml_log_printf(drcuml, "%sr%d", (count++ == 0) ? "" : ",", regnum); if (regnostarlist != NULL && !(regnostarlist[0] & REGFLAG_R(regnum))) drcuml_log_printf(drcuml, "*"); } } if (reglist[1] & REGFLAG_PR) { drcuml_log_printf(drcuml, "%spr", (count++ == 0) ? "" : ","); if (regnostarlist != NULL && !(regnostarlist[1] & REGFLAG_PR)) drcuml_log_printf(drcuml, "*"); } if (reglist[1] & REGFLAG_SR) { drcuml_log_printf(drcuml, "%ssr", (count++ == 0) ? "" : ","); if (regnostarlist != NULL && !(regnostarlist[1] & REGFLAG_SR)) drcuml_log_printf(drcuml, "*"); } if (reglist[1] & REGFLAG_MACL) { drcuml_log_printf(drcuml, "%smacl", (count++ == 0) ? "" : ","); if (regnostarlist != NULL && !(regnostarlist[1] & REGFLAG_MACL)) drcuml_log_printf(drcuml, "*"); } if (reglist[1] & REGFLAG_MACH) { drcuml_log_printf(drcuml, "%smach", (count++ == 0) ? "" : ","); if (regnostarlist != NULL && !(regnostarlist[1] & REGFLAG_MACH)) drcuml_log_printf(drcuml, "*"); } if (reglist[1] & REGFLAG_GBR) { drcuml_log_printf(drcuml, "%sgbr", (count++ == 0) ? "" : ","); if (regnostarlist != NULL && !(regnostarlist[1] & REGFLAG_GBR)) drcuml_log_printf(drcuml, "*"); } if (reglist[1] & REGFLAG_VBR) { drcuml_log_printf(drcuml, "%svbr", (count++ == 0) ? "" : ","); if (regnostarlist != NULL && !(regnostarlist[1] & REGFLAG_VBR)) drcuml_log_printf(drcuml, "*"); } drcuml_log_printf(drcuml, "] "); }
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log_register_list - log a list of GPR registers
[ "log_register_list", "-", "log", "a", "list", "of", "GPR", "registers" ]
[ "/* skip if nothing */" ]
[ { "param": "drcuml", "type": "drcuml_state" }, { "param": "string", "type": "char" }, { "param": "reglist", "type": "UINT32" }, { "param": "regnostarlist", "type": "UINT32" } ]
{ "returns": [], "raises": [], "params": [ { "identifier": "drcuml", "type": "drcuml_state", "docstring": null, "docstring_tokens": [], "default": null, "is_optional": null }, { "identifier": "string", "type": "char", "docstring": null, "docstring_tokens": [], "default": null, "is_optional": null }, { "identifier": "reglist", "type": "UINT32", "docstring": null, "docstring_tokens": [], "default": null, "is_optional": null }, { "identifier": "regnostarlist", "type": "UINT32", "docstring": null, "docstring_tokens": [], "default": null, "is_optional": null } ], "outlier_params": [], "others": [] }
908ba337e95781df892f5f60b9b28b6f64a544d5
lofunz/mieme
Reloaded/trunk/src/emu/cpu/sh2/sh2drc.c
[ "Unlicense" ]
C
log_add_disasm_comment
void
static void log_add_disasm_comment(drcuml_block *block, UINT32 pc, UINT32 op) { #if (LOG_UML) char buffer[100]; DasmSH2(buffer, pc, op); UML_COMMENT(block, "%08X: %s", pc, buffer); // comment #endif }
/*------------------------------------------------- log_add_disasm_comment - add a comment including disassembly of a MIPS instruction -------------------------------------------------*/
add a comment including disassembly of a MIPS instruction
[ "add", "a", "comment", "including", "disassembly", "of", "a", "MIPS", "instruction" ]
static void log_add_disasm_comment(drcuml_block *block, UINT32 pc, UINT32 op) { #if (LOG_UML) char buffer[100]; DasmSH2(buffer, pc, op); UML_COMMENT(block, "%08X: %s", pc, buffer); #endif }
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log_add_disasm_comment - add a comment including disassembly of a MIPS instruction
[ "log_add_disasm_comment", "-", "add", "a", "comment", "including", "disassembly", "of", "a", "MIPS", "instruction" ]
[ "// comment\r" ]
[ { "param": "block", "type": "drcuml_block" }, { "param": "pc", "type": "UINT32" }, { "param": "op", "type": "UINT32" } ]
{ "returns": [], "raises": [], "params": [ { "identifier": "block", "type": "drcuml_block", "docstring": null, "docstring_tokens": [], "default": null, "is_optional": null }, { "identifier": "pc", "type": "UINT32", "docstring": null, "docstring_tokens": [], "default": null, "is_optional": null }, { "identifier": "op", "type": "UINT32", "docstring": null, "docstring_tokens": [], "default": null, "is_optional": null } ], "outlier_params": [], "others": [] }
908ba337e95781df892f5f60b9b28b6f64a544d5
lofunz/mieme
Reloaded/trunk/src/emu/cpu/sh2/sh2drc.c
[ "Unlicense" ]
C
generate_update_cycles
void
static void generate_update_cycles(sh2_state *sh2, drcuml_block *block, compiler_state *compiler, drcuml_ptype ptype, UINT64 pvalue, int allow_exception) { /* check full interrupts if pending */ if (compiler->checkints) { drcuml_codelabel skip = compiler->labelnum++; compiler->checkints = FALSE; compiler->labelnum += 4; /* check for interrupts */ UML_MOV(block, MEM(&sh2->irqline), IMM(0xffffffff)); // mov irqline, #-1 UML_CMP(block, MEM(&sh2->pending_nmi), IMM(0)); // cmp pending_nmi, #0 UML_JMPc(block, IF_Z, skip+2); // jz skip+2 UML_MOV(block, MEM(&sh2->pending_nmi), IMM(0)); // zap pending_nmi UML_JMP(block, skip+1); // and then go take it (evec is already set) UML_LABEL(block, skip+2); // skip+2: UML_MOV(block, MEM(&sh2->evec), IMM(0xffffffff)); // mov evec, -1 UML_MOV(block, IREG(0), IMM(0xffffffff)); // mov r0, -1 (r0 = irq) UML_AND(block, IREG(1), IREG(0), IMM(0xffff)); // and r1, r0, 0xffff UML_LZCNT(block, IREG(1), MEM(&sh2->pending_irq)); // lzcnt r1, pending_irq UML_CMP(block, IREG(1), IMM(32)); // cmp r1, #32 UML_JMPc(block, IF_Z, skip+4); // jz skip+4 UML_SUB(block, MEM(&sh2->irqline), IMM(31), IREG(1)); // sub irqline, #31, r1 UML_LABEL(block, skip+4); // skip+4: UML_CMP(block, MEM(&sh2->internal_irq_level), IMM(0xffffffff)); // cmp internal_irq_level, #-1 UML_JMPc(block, IF_Z, skip+3); // jz skip+3 UML_CMP(block, MEM(&sh2->internal_irq_level), MEM(&sh2->irqline)); // cmp internal_irq_level, irqline UML_JMPc(block, IF_LE, skip+3); // jle skip+3 UML_MOV(block, MEM(&sh2->irqline), MEM(&sh2->internal_irq_level)); // mov r0, internal_irq_level UML_LABEL(block, skip+3); // skip+3: UML_CMP(block, MEM(&sh2->irqline), IMM(0xffffffff)); // cmp irqline, #-1 UML_JMPc(block, IF_Z, skip+1); // jz skip+1 UML_CALLC(block, cfunc_fastirq, sh2); // callc fastirq UML_LABEL(block, skip+1); // skip+1: UML_CMP(block, MEM(&sh2->evec), IMM(0xffffffff)); // cmp evec, 0xffffffff UML_JMPc(block, IF_Z, skip); // jz skip UML_SUB(block, R32(15), R32(15), IMM(4)); // sub R15, R15, #4 UML_MOV(block, IREG(0), R32(15)); // mov r0, R15 UML_MOV(block, IREG(1), MEM(&sh2->irqsr)); // mov r1, irqsr UML_CALLH(block, sh2->write32); // call write32 UML_SUB(block, R32(15), R32(15), IMM(4)); // sub R15, R15, #4 UML_MOV(block, IREG(0), R32(15)); // mov r0, R15 UML_MOV(block, IREG(1), PARAM(ptype, pvalue)); // mov r1, nextpc UML_CALLH(block, sh2->write32); // call write32 UML_HASHJMP(block, IMM(0), MEM(&sh2->evec), sh2->nocode); // hashjmp sh2->evec UML_LABEL(block, skip); // skip: } /* account for cycles */ if (compiler->cycles > 0) { UML_SUB(block, MEM(&sh2->icount), MEM(&sh2->icount), MAPVAR_CYCLES); // sub icount,icount,cycles UML_MAPVAR(block, MAPVAR_CYCLES, 0); // mapvar cycles,0 if (allow_exception) UML_EXHc(block, IF_S, sh2->out_of_cycles, PARAM(ptype, pvalue)); // exh out_of_cycles,nextpc } compiler->cycles = 0; }
/*------------------------------------------------- generate_update_cycles - generate code to subtract cycles from the icount and generate an exception if out -------------------------------------------------*/
generate code to subtract cycles from the icount and generate an exception if out
[ "generate", "code", "to", "subtract", "cycles", "from", "the", "icount", "and", "generate", "an", "exception", "if", "out" ]
static void generate_update_cycles(sh2_state *sh2, drcuml_block *block, compiler_state *compiler, drcuml_ptype ptype, UINT64 pvalue, int allow_exception) { if (compiler->checkints) { drcuml_codelabel skip = compiler->labelnum++; compiler->checkints = FALSE; compiler->labelnum += 4; UML_MOV(block, MEM(&sh2->irqline), IMM(0xffffffff)); UML_CMP(block, MEM(&sh2->pending_nmi), IMM(0)); UML_JMPc(block, IF_Z, skip+2); UML_MOV(block, MEM(&sh2->pending_nmi), IMM(0)); UML_JMP(block, skip+1); UML_LABEL(block, skip+2); UML_MOV(block, MEM(&sh2->evec), IMM(0xffffffff)); UML_MOV(block, IREG(0), IMM(0xffffffff)); UML_AND(block, IREG(1), IREG(0), IMM(0xffff)); UML_LZCNT(block, IREG(1), MEM(&sh2->pending_irq)); UML_CMP(block, IREG(1), IMM(32)); UML_JMPc(block, IF_Z, skip+4); UML_SUB(block, MEM(&sh2->irqline), IMM(31), IREG(1)); UML_LABEL(block, skip+4); UML_CMP(block, MEM(&sh2->internal_irq_level), IMM(0xffffffff)); UML_JMPc(block, IF_Z, skip+3); UML_CMP(block, MEM(&sh2->internal_irq_level), MEM(&sh2->irqline)); UML_JMPc(block, IF_LE, skip+3); UML_MOV(block, MEM(&sh2->irqline), MEM(&sh2->internal_irq_level)); UML_LABEL(block, skip+3); UML_CMP(block, MEM(&sh2->irqline), IMM(0xffffffff)); UML_JMPc(block, IF_Z, skip+1); UML_CALLC(block, cfunc_fastirq, sh2); UML_LABEL(block, skip+1); UML_CMP(block, MEM(&sh2->evec), IMM(0xffffffff)); UML_JMPc(block, IF_Z, skip); UML_SUB(block, R32(15), R32(15), IMM(4)); UML_MOV(block, IREG(0), R32(15)); UML_MOV(block, IREG(1), MEM(&sh2->irqsr)); UML_CALLH(block, sh2->write32); UML_SUB(block, R32(15), R32(15), IMM(4)); UML_MOV(block, IREG(0), R32(15)); UML_MOV(block, IREG(1), PARAM(ptype, pvalue)); UML_CALLH(block, sh2->write32); UML_HASHJMP(block, IMM(0), MEM(&sh2->evec), sh2->nocode); UML_LABEL(block, skip); } if (compiler->cycles > 0) { UML_SUB(block, MEM(&sh2->icount), MEM(&sh2->icount), MAPVAR_CYCLES); UML_MAPVAR(block, MAPVAR_CYCLES, 0); if (allow_exception) UML_EXHc(block, IF_S, sh2->out_of_cycles, PARAM(ptype, pvalue)); } compiler->cycles = 0; }
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generate_update_cycles - generate code to subtract cycles from the icount and generate an exception if out
[ "generate_update_cycles", "-", "generate", "code", "to", "subtract", "cycles", "from", "the", "icount", "and", "generate", "an", "exception", "if", "out" ]
[ "/* check full interrupts if pending */", "/* check for interrupts */", "// mov irqline, #-1\r", "// cmp pending_nmi, #0\r", "// jz skip+2\r", "// zap pending_nmi\r", "// and then go take it (evec is already set)\r", "// skip+2:\r", "// mov evec, -1\r", "// mov r0, -1 (r0 = irq)\r", "// and r1, r0, 0xffff\r", "// lzcnt r1, pending_irq\r", "// cmp r1, #32\r", "// jz skip+4\r", "// sub irqline, #31, r1\r", "// skip+4:\r", "// cmp internal_irq_level, #-1\r", "// jz skip+3\r", "// cmp internal_irq_level, irqline\r", "// jle skip+3\r", "// mov r0, internal_irq_level\r", "// skip+3:\r", "// cmp irqline, #-1\r", "// jz skip+1\r", "// callc fastirq\r", "// skip+1:\r", "// cmp evec, 0xffffffff\r", "// jz skip\r", "// sub R15, R15, #4\r", "// mov r0, R15\r", "// mov r1, irqsr\r", "// call write32\r", "// sub R15, R15, #4\r", "// mov r0, R15\r", "// mov r1, nextpc\r", "// call write32\r", "// hashjmp sh2->evec\r", "// skip:\r", "/* account for cycles */", "// sub icount,icount,cycles\r", "// mapvar cycles,0\r", "// exh out_of_cycles,nextpc\r" ]
[ { "param": "sh2", "type": "sh2_state" }, { "param": "block", "type": "drcuml_block" }, { "param": "compiler", "type": "compiler_state" }, { "param": "ptype", "type": "drcuml_ptype" }, { "param": "pvalue", "type": "UINT64" }, { "param": "allow_exception", "type": "int" } ]
{ "returns": [], "raises": [], "params": [ { "identifier": "sh2", "type": "sh2_state", "docstring": null, "docstring_tokens": [], "default": null, "is_optional": null }, { "identifier": "block", "type": "drcuml_block", "docstring": null, "docstring_tokens": [], "default": null, "is_optional": null }, { "identifier": "compiler", "type": "compiler_state", "docstring": null, "docstring_tokens": [], "default": null, "is_optional": null }, { "identifier": "ptype", "type": "drcuml_ptype", "docstring": null, "docstring_tokens": [], "default": null, "is_optional": null }, { "identifier": "pvalue", "type": "UINT64", "docstring": null, "docstring_tokens": [], "default": null, "is_optional": null }, { "identifier": "allow_exception", "type": "int", "docstring": null, "docstring_tokens": [], "default": null, "is_optional": null } ], "outlier_params": [], "others": [] }
908ba337e95781df892f5f60b9b28b6f64a544d5
lofunz/mieme
Reloaded/trunk/src/emu/cpu/sh2/sh2drc.c
[ "Unlicense" ]
C
generate_checksum_block
void
static void generate_checksum_block(sh2_state *sh2, drcuml_block *block, compiler_state *compiler, const opcode_desc *seqhead, const opcode_desc *seqlast) { const opcode_desc *curdesc; if (LOG_UML) UML_COMMENT(block, "[Validation for %08X]", seqhead->pc); // comment /* loose verify or single instruction: just compare and fail */ if (!(sh2->drcoptions & SH2DRC_STRICT_VERIFY) || seqhead->next == NULL) { if (!(seqhead->flags & OPFLAG_VIRTUAL_NOOP)) { void *base = memory_decrypted_read_ptr(sh2->program, SH2_CODE_XOR(seqhead->physpc)); UML_LOAD(block, IREG(0), base, IMM(0), WORD); // load i0,base,word UML_CMP(block, IREG(0), IMM(seqhead->opptr.w[0])); // cmp i0,*opptr UML_EXHc(block, IF_NE, sh2->nocode, IMM(epc(seqhead))); // exne nocode,seqhead->pc } } /* full verification; sum up everything */ else { #if 0 for (curdesc = seqhead->next; curdesc != seqlast->next; curdesc = curdesc->next) if (!(curdesc->flags & OPFLAG_VIRTUAL_NOOP)) { base = memory_decrypted_read_ptr(sh2->program, SH2_CODE_XOR(curdesc->physpc)); UML_LOAD(block, IREG(0), curdesc->opptr.w, IMM(0), WORD); // load i0,*opptr,0,word UML_CMP(block, IREG(0), IMM(curdesc->opptr.w[0])); // cmp i0,*opptr UML_EXHc(block, IF_NE, sh2->nocode, IMM(epc(seqhead))); // exne nocode,seqhead->pc } #else UINT32 sum = 0; void *base = memory_decrypted_read_ptr(sh2->program, SH2_CODE_XOR(seqhead->physpc)); UML_LOAD(block, IREG(0), base, IMM(0), WORD); // load i0,base,word sum += seqhead->opptr.w[0]; for (curdesc = seqhead->next; curdesc != seqlast->next; curdesc = curdesc->next) if (!(curdesc->flags & OPFLAG_VIRTUAL_NOOP)) { base = memory_decrypted_read_ptr(sh2->program, SH2_CODE_XOR(curdesc->physpc)); UML_LOAD(block, IREG(1), base, IMM(0), WORD); // load i1,*opptr,word UML_ADD(block, IREG(0), IREG(0), IREG(1)); // add i0,i0,i1 sum += curdesc->opptr.w[0]; } UML_CMP(block, IREG(0), IMM(sum)); // cmp i0,sum UML_EXHc(block, IF_NE, sh2->nocode, IMM(epc(seqhead))); // exne nocode,seqhead->pc #endif } }
/*------------------------------------------------- generate_checksum_block - generate code to validate a sequence of opcodes -------------------------------------------------*/
generate code to validate a sequence of opcodes
[ "generate", "code", "to", "validate", "a", "sequence", "of", "opcodes" ]
static void generate_checksum_block(sh2_state *sh2, drcuml_block *block, compiler_state *compiler, const opcode_desc *seqhead, const opcode_desc *seqlast) { const opcode_desc *curdesc; if (LOG_UML) UML_COMMENT(block, "[Validation for %08X]", seqhead->pc); if (!(sh2->drcoptions & SH2DRC_STRICT_VERIFY) || seqhead->next == NULL) { if (!(seqhead->flags & OPFLAG_VIRTUAL_NOOP)) { void *base = memory_decrypted_read_ptr(sh2->program, SH2_CODE_XOR(seqhead->physpc)); UML_LOAD(block, IREG(0), base, IMM(0), WORD); UML_CMP(block, IREG(0), IMM(seqhead->opptr.w[0])); UML_EXHc(block, IF_NE, sh2->nocode, IMM(epc(seqhead))); } } else { #if 0 for (curdesc = seqhead->next; curdesc != seqlast->next; curdesc = curdesc->next) if (!(curdesc->flags & OPFLAG_VIRTUAL_NOOP)) { base = memory_decrypted_read_ptr(sh2->program, SH2_CODE_XOR(curdesc->physpc)); UML_LOAD(block, IREG(0), curdesc->opptr.w, IMM(0), WORD); UML_CMP(block, IREG(0), IMM(curdesc->opptr.w[0])); UML_EXHc(block, IF_NE, sh2->nocode, IMM(epc(seqhead))); } #else UINT32 sum = 0; void *base = memory_decrypted_read_ptr(sh2->program, SH2_CODE_XOR(seqhead->physpc)); UML_LOAD(block, IREG(0), base, IMM(0), WORD); sum += seqhead->opptr.w[0]; for (curdesc = seqhead->next; curdesc != seqlast->next; curdesc = curdesc->next) if (!(curdesc->flags & OPFLAG_VIRTUAL_NOOP)) { base = memory_decrypted_read_ptr(sh2->program, SH2_CODE_XOR(curdesc->physpc)); UML_LOAD(block, IREG(1), base, IMM(0), WORD); UML_ADD(block, IREG(0), IREG(0), IREG(1)); sum += curdesc->opptr.w[0]; } UML_CMP(block, IREG(0), IMM(sum)); UML_EXHc(block, IF_NE, sh2->nocode, IMM(epc(seqhead))); #endif } }
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generate_checksum_block - generate code to validate a sequence of opcodes
[ "generate_checksum_block", "-", "generate", "code", "to", "validate", "a", "sequence", "of", "opcodes" ]
[ "// comment\r", "/* loose verify or single instruction: just compare and fail */", "// load i0,base,word\r", "// cmp i0,*opptr\r", "// exne nocode,seqhead->pc\r", "/* full verification; sum up everything */", "// load i0,*opptr,0,word\r", "// cmp i0,*opptr\r", "// exne nocode,seqhead->pc\r", "// load i0,base,word\r", "// load i1,*opptr,word\r", "// add i0,i0,i1\r", "// cmp i0,sum\r", "// exne nocode,seqhead->pc\r" ]
[ { "param": "sh2", "type": "sh2_state" }, { "param": "block", "type": "drcuml_block" }, { "param": "compiler", "type": "compiler_state" }, { "param": "seqhead", "type": "opcode_desc" }, { "param": "seqlast", "type": "opcode_desc" } ]
{ "returns": [], "raises": [], "params": [ { "identifier": "sh2", "type": "sh2_state", "docstring": null, "docstring_tokens": [], "default": null, "is_optional": null }, { "identifier": "block", "type": "drcuml_block", "docstring": null, "docstring_tokens": [], "default": null, "is_optional": null }, { "identifier": "compiler", "type": "compiler_state", "docstring": null, "docstring_tokens": [], "default": null, "is_optional": null }, { "identifier": "seqhead", "type": "opcode_desc", "docstring": null, "docstring_tokens": [], "default": null, "is_optional": null }, { "identifier": "seqlast", "type": "opcode_desc", "docstring": null, "docstring_tokens": [], "default": null, "is_optional": null } ], "outlier_params": [], "others": [] }
908ba337e95781df892f5f60b9b28b6f64a544d5
lofunz/mieme
Reloaded/trunk/src/emu/cpu/sh2/sh2drc.c
[ "Unlicense" ]
C
generate_sequence_instruction
void
static void generate_sequence_instruction(sh2_state *sh2, drcuml_block *block, compiler_state *compiler, const opcode_desc *desc) { offs_t expc; /* add an entry for the log */ if (LOG_UML && !(desc->flags & OPFLAG_VIRTUAL_NOOP)) log_add_disasm_comment(block, desc->pc, desc->opptr.w[0]); /* set the PC map variable */ expc = (desc->flags & OPFLAG_IN_DELAY_SLOT) ? desc->pc - 1 : desc->pc; UML_MAPVAR(block, MAPVAR_PC, expc); // mapvar PC,expc /* accumulate total cycles */ compiler->cycles += desc->cycles; /* update the icount map variable */ UML_MAPVAR(block, MAPVAR_CYCLES, compiler->cycles); // mapvar CYCLES,compiler->cycles /* if we want a probe, add it here */ if (desc->pc == PROBE_ADDRESS) { UML_MOV(block, MEM(&sh2->pc), IMM(desc->pc)); // mov [pc],desc->pc UML_CALLC(block, cfunc_printf_probe, sh2); // callc cfunc_printf_probe,sh2 } /* if we are debugging, call the debugger */ if ((sh2->device->machine->debug_flags & DEBUG_FLAG_ENABLED) != 0) { UML_MOV(block, MEM(&sh2->pc), IMM(desc->pc)); // mov [pc],desc->pc save_fast_iregs(sh2, block); UML_DEBUG(block, IMM(desc->pc)); // debug desc->pc } else // not debug, see what other reasons there are for flushing the PC { if (sh2->drcoptions & SH2DRC_FLUSH_PC) // always flush? { UML_MOV(block, MEM(&sh2->pc), IMM(desc->pc)); // mov sh2->pc, desc->pc } else // check for driver-selected flushes { int pcflush; for (pcflush = 0; pcflush < sh2->pcfsel; pcflush++) { if (desc->pc == sh2->pcflushes[pcflush]) { UML_MOV(block, MEM(&sh2->pc), IMM(desc->pc)); // mov sh2->pc, desc->pc } } } } /* if we hit an unmapped address, fatal error */ if (desc->flags & OPFLAG_COMPILER_UNMAPPED) { UML_MOV(block, MEM(&sh2->pc), IMM(desc->pc)); // mov [pc],desc->pc save_fast_iregs(sh2, block); UML_EXIT(block, IMM(EXECUTE_UNMAPPED_CODE)); // exit EXECUTE_UNMAPPED_CODE } /* if this is an invalid opcode, die */ if (desc->flags & OPFLAG_INVALID_OPCODE) { fatalerror("SH2DRC: invalid opcode!\n"); } /* otherwise, unless this is a virtual no-op, it's a regular instruction */ else if (!(desc->flags & OPFLAG_VIRTUAL_NOOP)) { /* compile the instruction */ if (!generate_opcode(sh2, block, compiler, desc)) { UML_MOV(block, MEM(&sh2->pc), IMM(desc->pc)); // mov [pc],desc->pc UML_MOV(block, MEM(&sh2->arg0), IMM(desc->opptr.w[0])); // mov [arg0],opcode UML_CALLC(block, cfunc_unimplemented, sh2); // callc cfunc_unimplemented } } }
/*------------------------------------------------- generate_sequence_instruction - generate code for a single instruction in a sequence -------------------------------------------------*/
generate code for a single instruction in a sequence
[ "generate", "code", "for", "a", "single", "instruction", "in", "a", "sequence" ]
static void generate_sequence_instruction(sh2_state *sh2, drcuml_block *block, compiler_state *compiler, const opcode_desc *desc) { offs_t expc; if (LOG_UML && !(desc->flags & OPFLAG_VIRTUAL_NOOP)) log_add_disasm_comment(block, desc->pc, desc->opptr.w[0]); expc = (desc->flags & OPFLAG_IN_DELAY_SLOT) ? desc->pc - 1 : desc->pc; UML_MAPVAR(block, MAPVAR_PC, expc); compiler->cycles += desc->cycles; UML_MAPVAR(block, MAPVAR_CYCLES, compiler->cycles); if (desc->pc == PROBE_ADDRESS) { UML_MOV(block, MEM(&sh2->pc), IMM(desc->pc)); UML_CALLC(block, cfunc_printf_probe, sh2); } if ((sh2->device->machine->debug_flags & DEBUG_FLAG_ENABLED) != 0) { UML_MOV(block, MEM(&sh2->pc), IMM(desc->pc)); save_fast_iregs(sh2, block); UML_DEBUG(block, IMM(desc->pc)); } else { if (sh2->drcoptions & SH2DRC_FLUSH_PC) { UML_MOV(block, MEM(&sh2->pc), IMM(desc->pc)); } else { int pcflush; for (pcflush = 0; pcflush < sh2->pcfsel; pcflush++) { if (desc->pc == sh2->pcflushes[pcflush]) { UML_MOV(block, MEM(&sh2->pc), IMM(desc->pc)); } } } } if (desc->flags & OPFLAG_COMPILER_UNMAPPED) { UML_MOV(block, MEM(&sh2->pc), IMM(desc->pc)); save_fast_iregs(sh2, block); UML_EXIT(block, IMM(EXECUTE_UNMAPPED_CODE)); } if (desc->flags & OPFLAG_INVALID_OPCODE) { fatalerror("SH2DRC: invalid opcode!\n"); } else if (!(desc->flags & OPFLAG_VIRTUAL_NOOP)) { if (!generate_opcode(sh2, block, compiler, desc)) { UML_MOV(block, MEM(&sh2->pc), IMM(desc->pc)); UML_MOV(block, MEM(&sh2->arg0), IMM(desc->opptr.w[0])); UML_CALLC(block, cfunc_unimplemented, sh2); } } }
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generate_sequence_instruction - generate code for a single instruction in a sequence
[ "generate_sequence_instruction", "-", "generate", "code", "for", "a", "single", "instruction", "in", "a", "sequence" ]
[ "/* add an entry for the log */", "/* set the PC map variable */", "// mapvar PC,expc\r", "/* accumulate total cycles */", "/* update the icount map variable */", "// mapvar CYCLES,compiler->cycles\r", "/* if we want a probe, add it here */", "// mov [pc],desc->pc\r", "// callc cfunc_printf_probe,sh2\r", "/* if we are debugging, call the debugger */", "// mov [pc],desc->pc\r", "// debug desc->pc\r", "// not debug, see what other reasons there are for flushing the PC\r", "// always flush?\r", "// mov sh2->pc, desc->pc\r", "// check for driver-selected flushes\r", "// mov sh2->pc, desc->pc\r", "/* if we hit an unmapped address, fatal error */", "// mov [pc],desc->pc\r", "// exit EXECUTE_UNMAPPED_CODE\r", "/* if this is an invalid opcode, die */", "/* otherwise, unless this is a virtual no-op, it's a regular instruction */", "/* compile the instruction */", "// mov [pc],desc->pc\r", "// mov [arg0],opcode\r", "// callc cfunc_unimplemented\r" ]
[ { "param": "sh2", "type": "sh2_state" }, { "param": "block", "type": "drcuml_block" }, { "param": "compiler", "type": "compiler_state" }, { "param": "desc", "type": "opcode_desc" } ]
{ "returns": [], "raises": [], "params": [ { "identifier": "sh2", "type": "sh2_state", "docstring": null, "docstring_tokens": [], "default": null, "is_optional": null }, { "identifier": "block", "type": "drcuml_block", "docstring": null, "docstring_tokens": [], "default": null, "is_optional": null }, { "identifier": "compiler", "type": "compiler_state", "docstring": null, "docstring_tokens": [], "default": null, "is_optional": null }, { "identifier": "desc", "type": "opcode_desc", "docstring": null, "docstring_tokens": [], "default": null, "is_optional": null } ], "outlier_params": [], "others": [] }
908ba337e95781df892f5f60b9b28b6f64a544d5
lofunz/mieme
Reloaded/trunk/src/emu/cpu/sh2/sh2drc.c
[ "Unlicense" ]
C
generate_opcode
int
static int generate_opcode(sh2_state *sh2, drcuml_block *block, compiler_state *compiler, const opcode_desc *desc) { UINT32 scratch, scratch2; INT32 disp; UINT16 opcode = desc->opptr.w[0]; UINT8 opswitch = opcode >> 12; int in_delay_slot = ((desc->flags & OPFLAG_IN_DELAY_SLOT) != 0); switch (opswitch) { case 0: return generate_group_0(sh2, block, compiler, desc, opcode, in_delay_slot); case 1: // MOVLS4 scratch = (opcode & 0x0f) * 4; UML_ADD(block, IREG(0), R32(Rn), IMM(scratch)); // add r0, Rn, scratch UML_MOV(block, IREG(1), R32(Rm)); // mov r1, Rm SETEA(0); // set ea for debug UML_CALLH(block, sh2->write32); if (!in_delay_slot) generate_update_cycles(sh2, block, compiler, IMM(desc->pc + 2), TRUE); return TRUE; case 2: return generate_group_2(sh2, block, compiler, desc, opcode, in_delay_slot); case 3: return generate_group_3(sh2, block, compiler, desc, opcode); case 4: return generate_group_4(sh2, block, compiler, desc, opcode, in_delay_slot); case 5: // MOVLL4 scratch = (opcode & 0x0f) * 4; UML_ADD(block, IREG(0), R32(Rm), IMM(scratch)); // add r0, Rm, scratch SETEA(0); // set ea for debug UML_CALLH(block, sh2->read32); // call read32 UML_MOV(block, R32(Rn), IREG(0)); // mov Rn, r0 if (!in_delay_slot) generate_update_cycles(sh2, block, compiler, IMM(desc->pc + 2), TRUE); return TRUE; case 6: return generate_group_6(sh2, block, compiler, desc, opcode, in_delay_slot); case 7: // ADDI scratch = opcode & 0xff; scratch2 = (UINT32)(INT32)(INT16)(INT8)scratch; UML_ADD(block, R32(Rn), R32(Rn), IMM(scratch2)); // add Rn, Rn, scratch2 return TRUE; case 8: return generate_group_8(sh2, block, compiler, desc, opcode, in_delay_slot); case 9: // MOVWI scratch = (desc->pc + 2) + ((opcode & 0xff) * 2) + 2; if (sh2->drcoptions & SH2DRC_STRICT_PCREL) { UML_MOV(block, IREG(0), IMM(scratch)); // mov r0, scratch SETEA(0); // set ea for debug UML_CALLH(block, sh2->read16); // read16(r0, r1) UML_SEXT(block, R32(Rn), IREG(0), WORD); // sext Rn, r0, WORD } else { scratch2 = (UINT32)(INT32)(INT16) RW(sh2, scratch); UML_MOV(block, R32(Rn), IMM(scratch2)); // mov Rn, scratch2 } if (!in_delay_slot) generate_update_cycles(sh2, block, compiler, IMM(desc->pc + 2), TRUE); return TRUE; case 10: // BRA generate_delay_slot(sh2, block, compiler, desc); disp = ((INT32)opcode << 20) >> 20; sh2->ea = (desc->pc + 2) + disp * 2 + 2; // sh2->ea = pc+4 + disp*2 + 2 generate_update_cycles(sh2, block, compiler, IMM(sh2->ea), TRUE); // <subtract cycles> UML_HASHJMP(block, IMM(0), IMM(sh2->ea), sh2->nocode); // hashjmp sh2->ea return TRUE; case 11: // BSR // panicstr @ 403da22 relies on the delay slot clobbering the PR set by a BSR, so // do this before running the delay slot UML_ADD(block, MEM(&sh2->pr), IMM(desc->pc), IMM(4)); // add sh2->pr, desc->pc, #4 (skip the current insn & delay slot) generate_delay_slot(sh2, block, compiler, desc); disp = ((INT32)opcode << 20) >> 20; sh2->ea = (desc->pc + 2) + disp * 2 + 2; // sh2->ea = pc+4 + disp*2 + 2 generate_update_cycles(sh2, block, compiler, IMM(sh2->ea), TRUE); // <subtract cycles> UML_HASHJMP(block, IMM(0), IMM(sh2->ea), sh2->nocode); // hashjmp sh2->ea return TRUE; case 12: return generate_group_12(sh2, block, compiler, desc, opcode, in_delay_slot); case 13: // MOVLI scratch = ((desc->pc + 4) & ~3) + ((opcode & 0xff) * 4); if (sh2->drcoptions & SH2DRC_STRICT_PCREL) { UML_MOV(block, IREG(0), IMM(scratch)); // mov r0, scratch UML_CALLH(block, sh2->read32); // read32(r0, r1) UML_MOV(block, R32(Rn), IREG(0)); // mov Rn, r0 } else { scratch2 = RL(sh2, scratch); UML_MOV(block, R32(Rn), IMM(scratch2)); // mov Rn, scratch2 } if (!in_delay_slot) generate_update_cycles(sh2, block, compiler, IMM(desc->pc + 2), TRUE); return TRUE; case 14: // MOVI scratch = opcode & 0xff; scratch2 = (UINT32)(INT32)(INT16)(INT8)scratch; UML_MOV(block, R32(Rn), IMM(scratch2)); return TRUE; case 15: // NOP return TRUE; } return FALSE; }
/*------------------------------------------------- generate_opcode - generate code for a specific opcode -------------------------------------------------*/
generate code for a specific opcode
[ "generate", "code", "for", "a", "specific", "opcode" ]
static int generate_opcode(sh2_state *sh2, drcuml_block *block, compiler_state *compiler, const opcode_desc *desc) { UINT32 scratch, scratch2; INT32 disp; UINT16 opcode = desc->opptr.w[0]; UINT8 opswitch = opcode >> 12; int in_delay_slot = ((desc->flags & OPFLAG_IN_DELAY_SLOT) != 0); switch (opswitch) { case 0: return generate_group_0(sh2, block, compiler, desc, opcode, in_delay_slot); case 1: scratch = (opcode & 0x0f) * 4; UML_ADD(block, IREG(0), R32(Rn), IMM(scratch)); UML_MOV(block, IREG(1), R32(Rm)); SETEA(0); UML_CALLH(block, sh2->write32); if (!in_delay_slot) generate_update_cycles(sh2, block, compiler, IMM(desc->pc + 2), TRUE); return TRUE; case 2: return generate_group_2(sh2, block, compiler, desc, opcode, in_delay_slot); case 3: return generate_group_3(sh2, block, compiler, desc, opcode); case 4: return generate_group_4(sh2, block, compiler, desc, opcode, in_delay_slot); case 5: scratch = (opcode & 0x0f) * 4; UML_ADD(block, IREG(0), R32(Rm), IMM(scratch)); SETEA(0); UML_CALLH(block, sh2->read32); UML_MOV(block, R32(Rn), IREG(0)); if (!in_delay_slot) generate_update_cycles(sh2, block, compiler, IMM(desc->pc + 2), TRUE); return TRUE; case 6: return generate_group_6(sh2, block, compiler, desc, opcode, in_delay_slot); case 7: scratch = opcode & 0xff; scratch2 = (UINT32)(INT32)(INT16)(INT8)scratch; UML_ADD(block, R32(Rn), R32(Rn), IMM(scratch2)); return TRUE; case 8: return generate_group_8(sh2, block, compiler, desc, opcode, in_delay_slot); case 9: scratch = (desc->pc + 2) + ((opcode & 0xff) * 2) + 2; if (sh2->drcoptions & SH2DRC_STRICT_PCREL) { UML_MOV(block, IREG(0), IMM(scratch)); SETEA(0); UML_CALLH(block, sh2->read16); UML_SEXT(block, R32(Rn), IREG(0), WORD); } else { scratch2 = (UINT32)(INT32)(INT16) RW(sh2, scratch); UML_MOV(block, R32(Rn), IMM(scratch2)); } if (!in_delay_slot) generate_update_cycles(sh2, block, compiler, IMM(desc->pc + 2), TRUE); return TRUE; case 10: generate_delay_slot(sh2, block, compiler, desc); disp = ((INT32)opcode << 20) >> 20; sh2->ea = (desc->pc + 2) + disp * 2 + 2; generate_update_cycles(sh2, block, compiler, IMM(sh2->ea), TRUE); UML_HASHJMP(block, IMM(0), IMM(sh2->ea), sh2->nocode); return TRUE; case 11: UML_ADD(block, MEM(&sh2->pr), IMM(desc->pc), IMM(4)); generate_delay_slot(sh2, block, compiler, desc); disp = ((INT32)opcode << 20) >> 20; sh2->ea = (desc->pc + 2) + disp * 2 + 2; generate_update_cycles(sh2, block, compiler, IMM(sh2->ea), TRUE); UML_HASHJMP(block, IMM(0), IMM(sh2->ea), sh2->nocode); return TRUE; case 12: return generate_group_12(sh2, block, compiler, desc, opcode, in_delay_slot); case 13: scratch = ((desc->pc + 4) & ~3) + ((opcode & 0xff) * 4); if (sh2->drcoptions & SH2DRC_STRICT_PCREL) { UML_MOV(block, IREG(0), IMM(scratch)); UML_CALLH(block, sh2->read32); UML_MOV(block, R32(Rn), IREG(0)); } else { scratch2 = RL(sh2, scratch); UML_MOV(block, R32(Rn), IMM(scratch2)); } if (!in_delay_slot) generate_update_cycles(sh2, block, compiler, IMM(desc->pc + 2), TRUE); return TRUE; case 14: scratch = opcode & 0xff; scratch2 = (UINT32)(INT32)(INT16)(INT8)scratch; UML_MOV(block, R32(Rn), IMM(scratch2)); return TRUE; case 15: return TRUE; } return FALSE; }
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generate_opcode - generate code for a specific opcode
[ "generate_opcode", "-", "generate", "code", "for", "a", "specific", "opcode" ]
[ "// MOVLS4\r", "// add r0, Rn, scratch\r", "// mov r1, Rm\r", "// set ea for debug\r", "// MOVLL4\r", "// add r0, Rm, scratch\r", "// set ea for debug\r", "// call read32\r", "// mov Rn, r0\r", "// ADDI\r", "// add Rn, Rn, scratch2\r", "// MOVWI\r", "// mov r0, scratch\r", "// set ea for debug\r", "// read16(r0, r1)\r", "// sext Rn, r0, WORD\r", "// mov Rn, scratch2\r", "// BRA\r", "// sh2->ea = pc+4 + disp*2 + 2\r", "// <subtract cycles>\r", "// hashjmp sh2->ea\r", "// BSR\r", "// panicstr @ 403da22 relies on the delay slot clobbering the PR set by a BSR, so\r", "// do this before running the delay slot\r", "// add sh2->pr, desc->pc, #4 (skip the current insn & delay slot)\r", "// sh2->ea = pc+4 + disp*2 + 2\r", "// <subtract cycles>\r", "// hashjmp sh2->ea\r", "// MOVLI\r", "// mov r0, scratch\r", "// read32(r0, r1)\r", "// mov Rn, r0\r", "// mov Rn, scratch2\r", "// MOVI\r", "// NOP\r" ]
[ { "param": "sh2", "type": "sh2_state" }, { "param": "block", "type": "drcuml_block" }, { "param": "compiler", "type": "compiler_state" }, { "param": "desc", "type": "opcode_desc" } ]
{ "returns": [], "raises": [], "params": [ { "identifier": "sh2", "type": "sh2_state", "docstring": null, "docstring_tokens": [], "default": null, "is_optional": null }, { "identifier": "block", "type": "drcuml_block", "docstring": null, "docstring_tokens": [], "default": null, "is_optional": null }, { "identifier": "compiler", "type": "compiler_state", "docstring": null, "docstring_tokens": [], "default": null, "is_optional": null }, { "identifier": "desc", "type": "opcode_desc", "docstring": null, "docstring_tokens": [], "default": null, "is_optional": null } ], "outlier_params": [], "others": [] }
908ba337e95781df892f5f60b9b28b6f64a544d5
lofunz/mieme
Reloaded/trunk/src/emu/cpu/sh2/sh2drc.c
[ "Unlicense" ]
C
sh2drc_add_pcflush
void
void sh2drc_add_pcflush(running_device *device, offs_t address) { sh2_state *sh2 = get_safe_token(device); if (sh2->pcfsel < ARRAY_LENGTH(sh2->pcflushes)) sh2->pcflushes[sh2->pcfsel++] = address; }
/*------------------------------------------------- sh2drc_add_pcflush - add a new address where the PC must be flushed for speedups to work -------------------------------------------------*/
add a new address where the PC must be flushed for speedups to work
[ "add", "a", "new", "address", "where", "the", "PC", "must", "be", "flushed", "for", "speedups", "to", "work" ]
void sh2drc_add_pcflush(running_device *device, offs_t address) { sh2_state *sh2 = get_safe_token(device); if (sh2->pcfsel < ARRAY_LENGTH(sh2->pcflushes)) sh2->pcflushes[sh2->pcfsel++] = address; }
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sh2drc_add_pcflush - add a new address where the PC must be flushed for speedups to work
[ "sh2drc_add_pcflush", "-", "add", "a", "new", "address", "where", "the", "PC", "must", "be", "flushed", "for", "speedups", "to", "work" ]
[]
[ { "param": "device", "type": "running_device" }, { "param": "address", "type": "offs_t" } ]
{ "returns": [], "raises": [], "params": [ { "identifier": "device", "type": "running_device", "docstring": null, "docstring_tokens": [], "default": null, "is_optional": null }, { "identifier": "address", "type": "offs_t", "docstring": null, "docstring_tokens": [], "default": null, "is_optional": null } ], "outlier_params": [], "others": [] }
6b3f3a42553d6602ab7cfadd1cc1914206d0a431
lofunz/mieme
Reloaded/trunk/src/mame/machine/snesdsp1.c
[ "Unlicense" ]
C
dsp1_fsm_step
void
static void dsp1_fsm_step( UINT8 read, UINT8 *data ) { if (0 == (dsp1_state.Sr & RQM)) return; // Now RQM would be cleared; however, as this code is not to be used in // a multithread environment, we will simply fake RQM operation. // (The only exception would be Op1A's freeze.) // binding if (read) { if (dsp1_state.Sr & DRS) *data = (UINT8)(dsp1_state.Dr >> 8); else *data = (UINT8)(dsp1_state.Dr); } else { if (dsp1_state.Sr & DRS) { dsp1_state.Dr &= 0x00ff; dsp1_state.Dr |= *data << 8; } else { dsp1_state.Dr &= 0xff00; dsp1_state.Dr |= *data; } } switch (dsp1_state.FsmMajorState) { case WAIT_COMMAND: dsp1_state.Command = (UINT8)(dsp1_state.Dr); if (!(dsp1_state.Command & 0xc0)) // valid command? { switch(dsp1_state.Command) { // freeze cases case 0x1a: case 0x2a: case 0x3a: dsp1_state.Freeze = TRUE; break; // normal cases default: dsp1_state.DataCounter = 0; dsp1_state.FsmMajorState = READ_DATA; dsp1_state.Sr &= ~DRC; break; } } break; case READ_DATA: dsp1_state.Sr ^= DRS; if (!(dsp1_state.Sr & DRS)) { dsp1_state.ReadBuffer[dsp1_state.DataCounter++] = (INT16)(dsp1_state.Dr); if (dsp1_state.DataCounter >= mCommandTable[dsp1_state.Command].reads) { (*mCommandTable[dsp1_state.Command].callback)(dsp1_state.ReadBuffer, dsp1_state.WriteBuffer); if (0 != mCommandTable[dsp1_state.Command].writes) // any output? { dsp1_state.DataCounter = 0; dsp1_state.Dr = (UINT16)(dsp1_state.WriteBuffer[dsp1_state.DataCounter]); dsp1_state.FsmMajorState = WRITE_DATA; } else { dsp1_state.Dr = 0x0080; // valid command completion dsp1_state.FsmMajorState = WAIT_COMMAND; dsp1_state.Sr |= DRC; } } } break; case WRITE_DATA: dsp1_state.Sr ^= DRS; if (!(dsp1_state.Sr & DRS)) { ++dsp1_state.DataCounter; if (dsp1_state.DataCounter >= mCommandTable[dsp1_state.Command].writes) { if ((dsp1_state.Command == 0x0a) && (dsp1_state.Dr != 0x8000)) { // works in continuous mode dsp1_state.ReadBuffer[0]++; // next raster line (*mCommandTable[dsp1_state.Command].callback)(dsp1_state.ReadBuffer, dsp1_state.WriteBuffer); dsp1_state.DataCounter = 0; dsp1_state.Dr = (UINT16)(dsp1_state.WriteBuffer[dsp1_state.DataCounter]); } else { dsp1_state.Dr = 0x0080; // valid command completion dsp1_state.FsmMajorState = WAIT_COMMAND; dsp1_state.Sr |= DRC; } } else { dsp1_state.Dr = (UINT16)(dsp1_state.WriteBuffer[dsp1_state.DataCounter]); } } break; } // Now RQM would be set (except when executing Op1A -command equals 0x1a, 0x2a or 0x3a-). if (dsp1_state.Freeze) dsp1_state.Sr &= ~RQM; }
// Though the DSP-1 is unaware of the type of operation (read or write) // we need to know what is being done by the program, as the class // is responsible for maintaining the binding between the // "external" and "internal" representations of the DR (data register).
Though the DSP-1 is unaware of the type of operation (read or write) we need to know what is being done by the program, as the class is responsible for maintaining the binding between the "external" and "internal" representations of the DR (data register).
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static void dsp1_fsm_step( UINT8 read, UINT8 *data ) { if (0 == (dsp1_state.Sr & RQM)) return; if (read) { if (dsp1_state.Sr & DRS) *data = (UINT8)(dsp1_state.Dr >> 8); else *data = (UINT8)(dsp1_state.Dr); } else { if (dsp1_state.Sr & DRS) { dsp1_state.Dr &= 0x00ff; dsp1_state.Dr |= *data << 8; } else { dsp1_state.Dr &= 0xff00; dsp1_state.Dr |= *data; } } switch (dsp1_state.FsmMajorState) { case WAIT_COMMAND: dsp1_state.Command = (UINT8)(dsp1_state.Dr); if (!(dsp1_state.Command & 0xc0)) { switch(dsp1_state.Command) { case 0x1a: case 0x2a: case 0x3a: dsp1_state.Freeze = TRUE; break; default: dsp1_state.DataCounter = 0; dsp1_state.FsmMajorState = READ_DATA; dsp1_state.Sr &= ~DRC; break; } } break; case READ_DATA: dsp1_state.Sr ^= DRS; if (!(dsp1_state.Sr & DRS)) { dsp1_state.ReadBuffer[dsp1_state.DataCounter++] = (INT16)(dsp1_state.Dr); if (dsp1_state.DataCounter >= mCommandTable[dsp1_state.Command].reads) { (*mCommandTable[dsp1_state.Command].callback)(dsp1_state.ReadBuffer, dsp1_state.WriteBuffer); if (0 != mCommandTable[dsp1_state.Command].writes) { dsp1_state.DataCounter = 0; dsp1_state.Dr = (UINT16)(dsp1_state.WriteBuffer[dsp1_state.DataCounter]); dsp1_state.FsmMajorState = WRITE_DATA; } else { dsp1_state.Dr = 0x0080; dsp1_state.FsmMajorState = WAIT_COMMAND; dsp1_state.Sr |= DRC; } } } break; case WRITE_DATA: dsp1_state.Sr ^= DRS; if (!(dsp1_state.Sr & DRS)) { ++dsp1_state.DataCounter; if (dsp1_state.DataCounter >= mCommandTable[dsp1_state.Command].writes) { if ((dsp1_state.Command == 0x0a) && (dsp1_state.Dr != 0x8000)) { dsp1_state.ReadBuffer[0]++; (*mCommandTable[dsp1_state.Command].callback)(dsp1_state.ReadBuffer, dsp1_state.WriteBuffer); dsp1_state.DataCounter = 0; dsp1_state.Dr = (UINT16)(dsp1_state.WriteBuffer[dsp1_state.DataCounter]); } else { dsp1_state.Dr = 0x0080; dsp1_state.FsmMajorState = WAIT_COMMAND; dsp1_state.Sr |= DRC; } } else { dsp1_state.Dr = (UINT16)(dsp1_state.WriteBuffer[dsp1_state.DataCounter]); } } break; } if (dsp1_state.Freeze) dsp1_state.Sr &= ~RQM; }
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Though the DSP-1 is unaware of the type of operation (read or write) we need to know what is being done by the program, as the class is responsible for maintaining the binding between the "external" and "internal" representations of the DR (data register).
[ "Though", "the", "DSP", "-", "1", "is", "unaware", "of", "the", "type", "of", "operation", "(", "read", "or", "write", ")", "we", "need", "to", "know", "what", "is", "being", "done", "by", "the", "program", "as", "the", "class", "is", "responsible", "for", "maintaining", "the", "binding", "between", "the", "\"", "external", "\"", "and", "\"", "internal", "\"", "representations", "of", "the", "DR", "(", "data", "register", ")", "." ]
[ "// Now RQM would be cleared; however, as this code is not to be used in\r", "// a multithread environment, we will simply fake RQM operation.\r", "// (The only exception would be Op1A's freeze.)\r", "// binding\r", "// valid command?\r", "// freeze cases\r", "// normal cases\r", "// any output?\r", "// valid command completion\r", "// works in continuous mode\r", "// next raster line\r", "// valid command completion\r", "// Now RQM would be set (except when executing Op1A -command equals 0x1a, 0x2a or 0x3a-).\r" ]
[ { "param": "read", "type": "UINT8" }, { "param": "data", "type": "UINT8" } ]
{ "returns": [], "raises": [], "params": [ { "identifier": "read", "type": "UINT8", "docstring": null, "docstring_tokens": [], "default": null, "is_optional": null }, { "identifier": "data", "type": "UINT8", "docstring": null, "docstring_tokens": [], "default": null, "is_optional": null } ], "outlier_params": [], "others": [] }
6b3f3a42553d6602ab7cfadd1cc1914206d0a431
lofunz/mieme
Reloaded/trunk/src/mame/machine/snesdsp1.c
[ "Unlicense" ]
C
dsp1_inverse
void
static void dsp1_inverse( INT16 *input, INT16 *output ) { INT16 Coefficient = input[0]; INT16 Exponent = input[1]; INT16* iCoefficient = &output[0]; INT16* iExponent = &output[1]; inverse(Coefficient, Exponent, iCoefficient, iExponent); }
// This command determines the inverse of a floating point decimal number.
This command determines the inverse of a floating point decimal number.
[ "This", "command", "determines", "the", "inverse", "of", "a", "floating", "point", "decimal", "number", "." ]
static void dsp1_inverse( INT16 *input, INT16 *output ) { INT16 Coefficient = input[0]; INT16 Exponent = input[1]; INT16* iCoefficient = &output[0]; INT16* iExponent = &output[1]; inverse(Coefficient, Exponent, iCoefficient, iExponent); }
[ "static", "void", "dsp1_inverse", "(", "INT16", "*", "input", ",", "INT16", "*", "output", ")", "{", "INT16", "Coefficient", "=", "input", "[", "0", "]", ";", "INT16", "Exponent", "=", "input", "[", "1", "]", ";", "INT16", "*", "iCoefficient", "=", "&", "output", "[", "0", "]", ";", "INT16", "*", "iExponent", "=", "&", "output", "[", "1", "]", ";", "inverse", "(", "Coefficient", ",", "Exponent", ",", "iCoefficient", ",", "iExponent", ")", ";", "}" ]
This command determines the inverse of a floating point decimal number.
[ "This", "command", "determines", "the", "inverse", "of", "a", "floating", "point", "decimal", "number", "." ]
[]
[ { "param": "input", "type": "INT16" }, { "param": "output", "type": "INT16" } ]
{ "returns": [], "raises": [], "params": [ { "identifier": "input", "type": "INT16", "docstring": null, "docstring_tokens": [], "default": null, "is_optional": null }, { "identifier": "output", "type": "INT16", "docstring": null, "docstring_tokens": [], "default": null, "is_optional": null } ], "outlier_params": [], "others": [] }
6b3f3a42553d6602ab7cfadd1cc1914206d0a431
lofunz/mieme
Reloaded/trunk/src/mame/machine/snesdsp1.c
[ "Unlicense" ]
C
dsp1_triangle
void
static void dsp1_triangle( INT16 *input, INT16 *output ) { INT16 Angle = input[0]; INT16 Radius = input[1]; INT16* Y = &output[0]; INT16* X = &output[1]; *Y = dsp1_sin(Angle) * Radius >> 15; *X = dsp1_cos(Angle) * Radius >> 15; }
// Vector component calculation. Determines the X and Y components for a // two-dimensional vector whose size and direction is known. // Y = Radius * sin(Angle) // X = Radius * cos(Angle)
Vector component calculation. Determines the X and Y components for a two-dimensional vector whose size and direction is known. Y = Radius * sin(Angle) X = Radius * cos(Angle)
[ "Vector", "component", "calculation", ".", "Determines", "the", "X", "and", "Y", "components", "for", "a", "two", "-", "dimensional", "vector", "whose", "size", "and", "direction", "is", "known", ".", "Y", "=", "Radius", "*", "sin", "(", "Angle", ")", "X", "=", "Radius", "*", "cos", "(", "Angle", ")" ]
static void dsp1_triangle( INT16 *input, INT16 *output ) { INT16 Angle = input[0]; INT16 Radius = input[1]; INT16* Y = &output[0]; INT16* X = &output[1]; *Y = dsp1_sin(Angle) * Radius >> 15; *X = dsp1_cos(Angle) * Radius >> 15; }
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Vector component calculation.
[ "Vector", "component", "calculation", "." ]
[]
[ { "param": "input", "type": "INT16" }, { "param": "output", "type": "INT16" } ]
{ "returns": [], "raises": [], "params": [ { "identifier": "input", "type": "INT16", "docstring": null, "docstring_tokens": [], "default": null, "is_optional": null }, { "identifier": "output", "type": "INT16", "docstring": null, "docstring_tokens": [], "default": null, "is_optional": null } ], "outlier_params": [], "others": [] }
6b3f3a42553d6602ab7cfadd1cc1914206d0a431
lofunz/mieme
Reloaded/trunk/src/mame/machine/snesdsp1.c
[ "Unlicense" ]
C
dsp1_range
void
static void dsp1_range( INT16 *input, INT16 *output ) { INT16 X = input[0]; INT16 Y = input[1]; INT16 Z = input[2]; INT16 Radius = input[3]; INT16* Range = &output[0]; *Range = (X * X + Y * Y + Z * Z - Radius * Radius) >> 15; }
// Vector size comparison. This command compares the size of the vector (X,Y,Z) and the distance (R) // from a particular point, and so may be used to determine if a point is within the sphere or radius R. // The output is D = X^2+Y^2+Z^2-R^2
Vector size comparison. This command compares the size of the vector (X,Y,Z) and the distance (R) from a particular point, and so may be used to determine if a point is within the sphere or radius R.
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static void dsp1_range( INT16 *input, INT16 *output ) { INT16 X = input[0]; INT16 Y = input[1]; INT16 Z = input[2]; INT16 Radius = input[3]; INT16* Range = &output[0]; *Range = (X * X + Y * Y + Z * Z - Radius * Radius) >> 15; }
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Vector size comparison.
[ "Vector", "size", "comparison", "." ]
[]
[ { "param": "input", "type": "INT16" }, { "param": "output", "type": "INT16" } ]
{ "returns": [], "raises": [], "params": [ { "identifier": "input", "type": "INT16", "docstring": null, "docstring_tokens": [], "default": null, "is_optional": null }, { "identifier": "output", "type": "INT16", "docstring": null, "docstring_tokens": [], "default": null, "is_optional": null } ], "outlier_params": [], "others": [] }
6b3f3a42553d6602ab7cfadd1cc1914206d0a431
lofunz/mieme
Reloaded/trunk/src/mame/machine/snesdsp1.c
[ "Unlicense" ]
C
dsp1_attitudeB
void
static void dsp1_attitudeB( INT16 *input, INT16 *output ) { INT16 S = input[0]; INT16 Rz = input[1]; INT16 Ry = input[2]; INT16 Rx = input[3]; INT16 SinRz = dsp1_sin(Rz); INT16 CosRz = dsp1_cos(Rz); INT16 SinRy = dsp1_sin(Ry); INT16 CosRy = dsp1_cos(Ry); INT16 SinRx = dsp1_sin(Rx); INT16 CosRx = dsp1_cos(Rx); S >>= 1; dsp1_state.shared.MatrixB[0][0] = (S * CosRz >> 15) * CosRy >> 15; dsp1_state.shared.MatrixB[0][1] = ((S * SinRz >> 15) * CosRx >> 15) + (((S * CosRz >> 15) * SinRx >> 15) * SinRy >> 15); dsp1_state.shared.MatrixB[0][2] = ((S * SinRz >> 15) * SinRx >> 15) - (((S * CosRz >> 15) * CosRx >> 15) * SinRy >> 15); dsp1_state.shared.MatrixB[1][0] = -((S * SinRz >> 15) * CosRy >> 15); dsp1_state.shared.MatrixB[1][1] = ((S * CosRz >> 15) * CosRx >> 15) - (((S * SinRz >> 15) * SinRx >> 15) * SinRy >> 15); dsp1_state.shared.MatrixB[1][2] = ((S * CosRz >> 15) * SinRx >> 15) + (((S * SinRz >> 15) * CosRx >> 15) * SinRy >> 15); dsp1_state.shared.MatrixB[2][0] = S * SinRy >> 15; dsp1_state.shared.MatrixB[2][1] = -((S * SinRx >> 15) * CosRy >> 15); dsp1_state.shared.MatrixB[2][2] = (S * CosRx >> 15) * CosRy >> 15; }
// Same than 'attitudeA', but with a difference attitude matrix (matrixB)
Same than 'attitudeA', but with a difference attitude matrix (matrixB)
[ "Same", "than", "'", "attitudeA", "'", "but", "with", "a", "difference", "attitude", "matrix", "(", "matrixB", ")" ]
static void dsp1_attitudeB( INT16 *input, INT16 *output ) { INT16 S = input[0]; INT16 Rz = input[1]; INT16 Ry = input[2]; INT16 Rx = input[3]; INT16 SinRz = dsp1_sin(Rz); INT16 CosRz = dsp1_cos(Rz); INT16 SinRy = dsp1_sin(Ry); INT16 CosRy = dsp1_cos(Ry); INT16 SinRx = dsp1_sin(Rx); INT16 CosRx = dsp1_cos(Rx); S >>= 1; dsp1_state.shared.MatrixB[0][0] = (S * CosRz >> 15) * CosRy >> 15; dsp1_state.shared.MatrixB[0][1] = ((S * SinRz >> 15) * CosRx >> 15) + (((S * CosRz >> 15) * SinRx >> 15) * SinRy >> 15); dsp1_state.shared.MatrixB[0][2] = ((S * SinRz >> 15) * SinRx >> 15) - (((S * CosRz >> 15) * CosRx >> 15) * SinRy >> 15); dsp1_state.shared.MatrixB[1][0] = -((S * SinRz >> 15) * CosRy >> 15); dsp1_state.shared.MatrixB[1][1] = ((S * CosRz >> 15) * CosRx >> 15) - (((S * SinRz >> 15) * SinRx >> 15) * SinRy >> 15); dsp1_state.shared.MatrixB[1][2] = ((S * CosRz >> 15) * SinRx >> 15) + (((S * SinRz >> 15) * CosRx >> 15) * SinRy >> 15); dsp1_state.shared.MatrixB[2][0] = S * SinRy >> 15; dsp1_state.shared.MatrixB[2][1] = -((S * SinRx >> 15) * CosRy >> 15); dsp1_state.shared.MatrixB[2][2] = (S * CosRx >> 15) * CosRy >> 15; }
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Same than 'attitudeA', but with a difference attitude matrix (matrixB)
[ "Same", "than", "'", "attitudeA", "'", "but", "with", "a", "difference", "attitude", "matrix", "(", "matrixB", ")" ]
[]
[ { "param": "input", "type": "INT16" }, { "param": "output", "type": "INT16" } ]
{ "returns": [], "raises": [], "params": [ { "identifier": "input", "type": "INT16", "docstring": null, "docstring_tokens": [], "default": null, "is_optional": null }, { "identifier": "output", "type": "INT16", "docstring": null, "docstring_tokens": [], "default": null, "is_optional": null } ], "outlier_params": [], "others": [] }
6b3f3a42553d6602ab7cfadd1cc1914206d0a431
lofunz/mieme
Reloaded/trunk/src/mame/machine/snesdsp1.c
[ "Unlicense" ]
C
dsp1_attitudeC
void
static void dsp1_attitudeC( INT16 *input, INT16 *output ) { INT16 S = input[0]; INT16 Rz = input[1]; INT16 Ry = input[2]; INT16 Rx = input[3]; INT16 SinRz = dsp1_sin(Rz); INT16 CosRz = dsp1_cos(Rz); INT16 SinRy = dsp1_sin(Ry); INT16 CosRy = dsp1_cos(Ry); INT16 SinRx = dsp1_sin(Rx); INT16 CosRx = dsp1_cos(Rx); S >>= 1; dsp1_state.shared.MatrixC[0][0] = (S * CosRz >> 15) * CosRy >> 15; dsp1_state.shared.MatrixC[0][1] = ((S * SinRz >> 15) * CosRx >> 15) + (((S * CosRz >> 15) * SinRx >> 15) * SinRy >> 15); dsp1_state.shared.MatrixC[0][2] = ((S * SinRz >> 15) * SinRx >> 15) - (((S * CosRz >> 15) * CosRx >> 15) * SinRy >> 15); dsp1_state.shared.MatrixC[1][0] = -((S * SinRz >> 15) * CosRy >> 15); dsp1_state.shared.MatrixC[1][1] = ((S * CosRz >> 15) * CosRx >> 15) - (((S * SinRz >> 15) * SinRx >> 15) * SinRy >> 15); dsp1_state.shared.MatrixC[1][2] = ((S * CosRz >> 15) * SinRx >> 15) + (((S * SinRz >> 15) * CosRx >> 15) * SinRy >> 15); dsp1_state.shared.MatrixC[2][0] = S * SinRy >> 15; dsp1_state.shared.MatrixC[2][1] = -((S * SinRx >> 15) * CosRy >> 15); dsp1_state.shared.MatrixC[2][2] = (S * CosRx >> 15) * CosRy >> 15; }
// Same than 'attitudeA', but with a difference attitude matrix (matrixC)
Same than 'attitudeA', but with a difference attitude matrix (matrixC)
[ "Same", "than", "'", "attitudeA", "'", "but", "with", "a", "difference", "attitude", "matrix", "(", "matrixC", ")" ]
static void dsp1_attitudeC( INT16 *input, INT16 *output ) { INT16 S = input[0]; INT16 Rz = input[1]; INT16 Ry = input[2]; INT16 Rx = input[3]; INT16 SinRz = dsp1_sin(Rz); INT16 CosRz = dsp1_cos(Rz); INT16 SinRy = dsp1_sin(Ry); INT16 CosRy = dsp1_cos(Ry); INT16 SinRx = dsp1_sin(Rx); INT16 CosRx = dsp1_cos(Rx); S >>= 1; dsp1_state.shared.MatrixC[0][0] = (S * CosRz >> 15) * CosRy >> 15; dsp1_state.shared.MatrixC[0][1] = ((S * SinRz >> 15) * CosRx >> 15) + (((S * CosRz >> 15) * SinRx >> 15) * SinRy >> 15); dsp1_state.shared.MatrixC[0][2] = ((S * SinRz >> 15) * SinRx >> 15) - (((S * CosRz >> 15) * CosRx >> 15) * SinRy >> 15); dsp1_state.shared.MatrixC[1][0] = -((S * SinRz >> 15) * CosRy >> 15); dsp1_state.shared.MatrixC[1][1] = ((S * CosRz >> 15) * CosRx >> 15) - (((S * SinRz >> 15) * SinRx >> 15) * SinRy >> 15); dsp1_state.shared.MatrixC[1][2] = ((S * CosRz >> 15) * SinRx >> 15) + (((S * SinRz >> 15) * CosRx >> 15) * SinRy >> 15); dsp1_state.shared.MatrixC[2][0] = S * SinRy >> 15; dsp1_state.shared.MatrixC[2][1] = -((S * SinRx >> 15) * CosRy >> 15); dsp1_state.shared.MatrixC[2][2] = (S * CosRx >> 15) * CosRy >> 15; }
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Same than 'attitudeA', but with a difference attitude matrix (matrixC)
[ "Same", "than", "'", "attitudeA", "'", "but", "with", "a", "difference", "attitude", "matrix", "(", "matrixC", ")" ]
[]
[ { "param": "input", "type": "INT16" }, { "param": "output", "type": "INT16" } ]
{ "returns": [], "raises": [], "params": [ { "identifier": "input", "type": "INT16", "docstring": null, "docstring_tokens": [], "default": null, "is_optional": null }, { "identifier": "output", "type": "INT16", "docstring": null, "docstring_tokens": [], "default": null, "is_optional": null } ], "outlier_params": [], "others": [] }
6b3f3a42553d6602ab7cfadd1cc1914206d0a431
lofunz/mieme
Reloaded/trunk/src/mame/machine/snesdsp1.c
[ "Unlicense" ]
C
dsp1_scalarA
void
static void dsp1_scalarA( INT16 *input, INT16 *output ) { INT16 X = input[0]; INT16 Y = input[1]; INT16 Z = input[2]; INT16* S = &output[0]; *S = (X * dsp1_state.shared.MatrixA[0][0] + Y * dsp1_state.shared.MatrixA[1][0] + Z * dsp1_state.shared.MatrixA[2][0]) >> 15; }
// This command calculates the inner product (S) of a vector (X,Y,Z) and // the first column of MatrixA. It should be noted that that first column // represent the global coordinates of an unity vector in the forward // direction in the object coordinate system (coordinates (1,0,0) in the FLU // axes system). // // input[0]: X ; input[1]: Y ; input[2]: Z // &output[0]: S
This command calculates the inner product (S) of a vector (X,Y,Z) and the first column of MatrixA. It should be noted that that first column represent the global coordinates of an unity vector in the forward direction in the object coordinate system (coordinates (1,0,0) in the FLU axes system).
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static void dsp1_scalarA( INT16 *input, INT16 *output ) { INT16 X = input[0]; INT16 Y = input[1]; INT16 Z = input[2]; INT16* S = &output[0]; *S = (X * dsp1_state.shared.MatrixA[0][0] + Y * dsp1_state.shared.MatrixA[1][0] + Z * dsp1_state.shared.MatrixA[2][0]) >> 15; }
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This command calculates the inner product (S) of a vector (X,Y,Z) and the first column of MatrixA.
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[]
[ { "param": "input", "type": "INT16" }, { "param": "output", "type": "INT16" } ]
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