text: /*
   * This file is part of the Micro Python project, http://micropython.org/
   *
   * The MIT License (MIT)
   *
   * Copyright (c) 2013, 2014 Damien P. George
   *
   * Permission is hereby granted, free of charge, to any person obtaining a copy
   * of this software and associated documentation files (the "Software"), to deal
   * in the Software without restriction, including without limitation the rights
   * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
   * copies of the Software, and to permit persons to whom the Software is
   * furnished to do so, subject to the following conditions:
   *
   * The above copyright notice and this permission notice shall be included in
   * all copies or substantial portions of the Software.
   *
   * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
   * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
   * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
   * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
   * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
   * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
   * THE SOFTWARE.
   */
  #ifndef __MICROPY_INCLUDED_PY_ASMX64_H__
  #define __MICROPY_INCLUDED_PY_ASMX64_H__
  
  #include "py/mpconfig.h"
  #include "py/misc.h"
  #include "py/asmbase.h"
  
  // AMD64 calling convention is:
  //  - args pass in: RDI, RSI, RDX, RCX, R08, R09
  //  - return value in RAX
  //  - stack must be aligned on a 16-byte boundary before all calls
  //  - RAX, RCX, RDX, RSI, RDI, R08, R09, R10, R11 are caller-save
  //  - RBX, RBP, R12, R13, R14, R15 are callee-save
  
  // In the functions below, argument order follows x86 docs and generally
  // the destination is the first argument.
  // NOTE: this is a change from the old convention used in this file and
  // some functions still use the old (reverse) convention.
  
  #define ASM_X64_REG_RAX (0)
  #define ASM_X64_REG_RCX (1)
  #define ASM_X64_REG_RDX (2)
  #define ASM_X64_REG_RBX (3)
  #define ASM_X64_REG_RSP (4)
  #define ASM_X64_REG_RBP (5)
  #define ASM_X64_REG_RSI (6)
  #define ASM_X64_REG_RDI (7)
  #define ASM_X64_REG_R08 (8)
  #define ASM_X64_REG_R09 (9)
  #define ASM_X64_REG_R10 (10)
  #define ASM_X64_REG_R11 (11)
  #define ASM_X64_REG_R12 (12)
  #define ASM_X64_REG_R13 (13)
  #define ASM_X64_REG_R14 (14)
  #define ASM_X64_REG_R15 (15)
  
  // condition codes, used for jcc and setcc (despite their j-name!)
  #define ASM_X64_CC_JB  (0x2) // below, unsigned
  #define ASM_X64_CC_JZ  (0x4)
  #define ASM_X64_CC_JE  (0x4)
  #define ASM_X64_CC_JNZ (0x5)
  #define ASM_X64_CC_JNE (0x5)
  #define ASM_X64_CC_JL  (0xc) // less, signed
  #define ASM_X64_CC_JGE (0xd) // greater or equal, signed
  #define ASM_X64_CC_JLE (0xe) // less or equal, signed
  #define ASM_X64_CC_JG  (0xf) // greater, signed
  
  typedef struct _asm_x64_t {
      mp_asm_base_t base;
      int num_locals;
  } asm_x64_t;
  
  static inline void asm_x64_end_pass(asm_x64_t *as) {
      (void)as;
  }
  
  void asm_x64_nop(asm_x64_t* as);
  void asm_x64_push_r64(asm_x64_t* as, int src_r64);
  void asm_x64_pop_r64(asm_x64_t* as, int dest_r64);
  void asm_x64_mov_r64_r64(asm_x64_t* as, int dest_r64, int src_r64);
  void asm_x64_mov_i64_to_r64(asm_x64_t* as, int64_t src_i64, int dest_r64);
  void asm_x64_mov_i64_to_r64_optimised(asm_x64_t *as, int64_t src_i64, int dest_r64);
  void asm_x64_mov_i64_to_r64_aligned(asm_x64_t *as, int64_t src_i64, int dest_r64);
  void asm_x64_mov_r8_to_mem8(asm_x64_t *as, int src_r64, int dest_r64, int dest_disp);
  void asm_x64_mov_r16_to_mem16(asm_x64_t *as, int src_r64, int dest_r64, int dest_disp);
  void asm_x64_mov_r32_to_mem32(asm_x64_t *as, int src_r64, int dest_r64, int dest_disp);
  void asm_x64_mov_r64_to_mem64(asm_x64_t *as, int src_r64, int dest_r64, int dest_disp);
  void asm_x64_mov_mem8_to_r64zx(asm_x64_t *as, int src_r64, int src_disp, int dest_r64);
  void asm_x64_mov_mem16_to_r64zx(asm_x64_t *as, int src_r64, int src_disp, int dest_r64);
  void asm_x64_mov_mem32_to_r64zx(asm_x64_t *as, int src_r64, int src_disp, int dest_r64);
  void asm_x64_mov_mem64_to_r64(asm_x64_t *as, int src_r64, int src_disp, int dest_r64);
  void asm_x64_and_r64_r64(asm_x64_t *as, int dest_r64, int src_r64);
  void asm_x64_or_r64_r64(asm_x64_t *as, int dest_r64, int src_r64);
  void asm_x64_xor_r64_r64(asm_x64_t *as, int dest_r64, int src_r64);
  void asm_x64_shl_r64_cl(asm_x64_t* as, int dest_r64);
  void asm_x64_sar_r64_cl(asm_x64_t* as, int dest_r64);
  void asm_x64_add_r64_r64(asm_x64_t* as, int dest_r64, int src_r64);
  void asm_x64_sub_r64_r64(asm_x64_t* as, int dest_r64, int src_r64);
  void asm_x64_mul_r64_r64(asm_x64_t* as, int dest_r64, int src_r64);
  void asm_x64_cmp_r64_with_r64(asm_x64_t* as, int src_r64_a, int src_r64_b);
  void asm_x64_test_r8_with_r8(asm_x64_t* as, int src_r64_a, int src_r64_b);
  void asm_x64_setcc_r8(asm_x64_t* as, int jcc_type, int dest_r8);
  void asm_x64_jmp_label(asm_x64_t* as, mp_uint_t label);
  void asm_x64_jcc_label(asm_x64_t* as, int jcc_type, mp_uint_t label);
  void asm_x64_entry(asm_x64_t* as, int num_locals);
  void asm_x64_exit(asm_x64_t* as);
  void asm_x64_mov_local_to_r64(asm_x64_t* as, int src_local_num, int dest_r64);
  void asm_x64_mov_r64_to_local(asm_x64_t* as, int src_r64, int dest_local_num);
  void asm_x64_mov_local_addr_to_r64(asm_x64_t* as, int local_num, int dest_r64);
  void asm_x64_call_ind(asm_x64_t* as, void* ptr, int temp_r32);
  
  #if GENERIC_ASM_API
  
  // The following macros provide a (mostly) arch-independent API to
  // generate native code, and are used by the native emitter.
  
  #define ASM_WORD_SIZE (8)
  
  #define REG_RET ASM_X64_REG_RAX
  #define REG_ARG_1 ASM_X64_REG_RDI
  #define REG_ARG_2 ASM_X64_REG_RSI
  #define REG_ARG_3 ASM_X64_REG_RDX
  #define REG_ARG_4 ASM_X64_REG_RCX
  #define REG_ARG_5 ASM_X64_REG_R08
  
  // caller-save
  #define REG_TEMP0 ASM_X64_REG_RAX
  #define REG_TEMP1 ASM_X64_REG_RDI
  #define REG_TEMP2 ASM_X64_REG_RSI
  
  // callee-save
  #define REG_LOCAL_1 ASM_X64_REG_RBX
  #define REG_LOCAL_2 ASM_X64_REG_R12
  #define REG_LOCAL_3 ASM_X64_REG_R13
  #define REG_LOCAL_NUM (3)
  
  #define ASM_T               asm_x64_t
  #define ASM_END_PASS        asm_x64_end_pass
  #define ASM_ENTRY           asm_x64_entry
  #define ASM_EXIT            asm_x64_exit
  
  #define ASM_JUMP            asm_x64_jmp_label
  #define ASM_JUMP_IF_REG_ZERO(as, reg, label) \
      do { \
          asm_x64_test_r8_with_r8(as, reg, reg); \
          asm_x64_jcc_label(as, ASM_X64_CC_JZ, label); \
      } while (0)
  #define ASM_JUMP_IF_REG_NONZERO(as, reg, label) \
      do { \
          asm_x64_test_r8_with_r8(as, reg, reg); \
          asm_x64_jcc_label(as, ASM_X64_CC_JNZ, label); \
      } while (0)
  #define ASM_JUMP_IF_REG_EQ(as, reg1, reg2, label) \
      do { \
          asm_x64_cmp_r64_with_r64(as, reg1, reg2); \
          asm_x64_jcc_label(as, ASM_X64_CC_JE, label); \
      } while (0)
  #define ASM_CALL_IND(as, ptr, idx) asm_x64_call_ind(as, ptr, ASM_X64_REG_RAX)
  
  #define ASM_MOV_REG_TO_LOCAL        asm_x64_mov_r64_to_local
  #define ASM_MOV_IMM_TO_REG          asm_x64_mov_i64_to_r64_optimised
  #define ASM_MOV_ALIGNED_IMM_TO_REG  asm_x64_mov_i64_to_r64_aligned
  #define ASM_MOV_IMM_TO_LOCAL_USING(as, imm, local_num, reg_temp) \
      do { \
          asm_x64_mov_i64_to_r64_optimised(as, (imm), (reg_temp)); \
          asm_x64_mov_r64_to_local(as, (reg_temp), (local_num)); \
      } while (false)
  #define ASM_MOV_LOCAL_TO_REG        asm_x64_mov_local_to_r64
  #define ASM_MOV_REG_REG(as, reg_dest, reg_src) asm_x64_mov_r64_r64((as), (reg_dest), (reg_src))
  #define ASM_MOV_LOCAL_ADDR_TO_REG   asm_x64_mov_local_addr_to_r64
  
  #define ASM_LSL_REG(as, reg) asm_x64_shl_r64_cl((as), (reg))
  #define ASM_ASR_REG(as, reg) asm_x64_sar_r64_cl((as), (reg))
  #define ASM_OR_REG_REG(as, reg_dest, reg_src) asm_x64_or_r64_r64((as), (reg_dest), (reg_src))
  #define ASM_XOR_REG_REG(as, reg_dest, reg_src) asm_x64_xor_r64_r64((as), (reg_dest), (reg_src))
  #define ASM_AND_REG_REG(as, reg_dest, reg_src) asm_x64_and_r64_r64((as), (reg_dest), (reg_src))
  #define ASM_ADD_REG_REG(as, reg_dest, reg_src) asm_x64_add_r64_r64((as), (reg_dest), (reg_src))
  #define ASM_SUB_REG_REG(as, reg_dest, reg_src) asm_x64_sub_r64_r64((as), (reg_dest), (reg_src))
  #define ASM_MUL_REG_REG(as, reg_dest, reg_src) asm_x64_mul_r64_r64((as), (reg_dest), (reg_src))
  
  #define ASM_LOAD_REG_REG(as, reg_dest, reg_base) asm_x64_mov_mem64_to_r64((as), (reg_base), 0, (reg_dest))
  #define ASM_LOAD_REG_REG_OFFSET(as, reg_dest, reg_base, word_offset) asm_x64_mov_mem64_to_r64((as), (reg_base), 8 * (word_offset), (reg_dest))
  #define ASM_LOAD8_REG_REG(as, reg_dest, reg_base) asm_x64_mov_mem8_to_r64zx((as), (reg_base), 0, (reg_dest))
  #define ASM_LOAD16_REG_REG(as, reg_dest, reg_base) asm_x64_mov_mem16_to_r64zx((as), (reg_base), 0, (reg_dest))
  #define ASM_LOAD32_REG_REG(as, reg_dest, reg_base) asm_x64_mov_mem32_to_r64zx((as), (reg_base), 0, (reg_dest))
  
  #define ASM_STORE_REG_REG(as, reg_src, reg_base) asm_x64_mov_r64_to_mem64((as), (reg_src), (reg_base), 0)
  #define ASM_STORE_REG_REG_OFFSET(as, reg_src, reg_base, word_offset) asm_x64_mov_r64_to_mem64((as), (reg_src), (reg_base), 8 * (word_offset))
  #define ASM_STORE8_REG_REG(as, reg_src, reg_base) asm_x64_mov_r8_to_mem8((as), (reg_src), (reg_base), 0)
  #define ASM_STORE16_REG_REG(as, reg_src, reg_base) asm_x64_mov_r16_to_mem16((as), (reg_src), (reg_base), 0)
  #define ASM_STORE32_REG_REG(as, reg_src, reg_base) asm_x64_mov_r32_to_mem32((as), (reg_src), (reg_base), 0)
  
  #endif // GENERIC_ASM_API
  
  #endif // __MICROPY_INCLUDED_PY_ASMX64_H__
  