text: /*
   * Various assmbly language/system dependent  hacks that are required
   * so that we can minimize the amount of platform specific code.
   */
  
  /*
   * Define this if the system uses RELOCA.
   */
  #define ELF_USES_RELOCA
  #include <elf.h>
  /*
   * Initialization sequence for a GOT.
   */
  #define INIT_GOT(GOT_BASE,MODULE)  _dl_init_got(GOT_BASE,MODULE)
  
  /* Stuff for the PLT.  */
  #define PLT_INITIAL_ENTRY_WORDS 18
  #define PLT_LONGBRANCH_ENTRY_WORDS 0
  #define PLT_TRAMPOLINE_ENTRY_WORDS 6
  #define PLT_DOUBLE_SIZE (1<<13)
  #define PLT_ENTRY_START_WORDS(entry_number) \
    (PLT_INITIAL_ENTRY_WORDS + (entry_number)*2				\
     + ((entry_number) > PLT_DOUBLE_SIZE					\
        ? ((entry_number) - PLT_DOUBLE_SIZE)*2				\
        : 0))
  #define PLT_DATA_START_WORDS(num_entries) PLT_ENTRY_START_WORDS(num_entries)
  
  /* Macros to build PowerPC opcode words.  */
  #define OPCODE_ADDI(rd,ra,simm) \
    (0x38000000 | (rd) << 21 | (ra) << 16 | ((simm) & 0xffff))
  #define OPCODE_ADDIS(rd,ra,simm) \
    (0x3c000000 | (rd) << 21 | (ra) << 16 | ((simm) & 0xffff))
  #define OPCODE_ADD(rd,ra,rb) \
    (0x7c000214 | (rd) << 21 | (ra) << 16 | (rb) << 11)
  #define OPCODE_B(target) (0x48000000 | ((target) & 0x03fffffc))
  #define OPCODE_BA(target) (0x48000002 | ((target) & 0x03fffffc))
  #define OPCODE_BCTR() 0x4e800420
  #define OPCODE_LWZ(rd,d,ra) \
    (0x80000000 | (rd) << 21 | (ra) << 16 | ((d) & 0xffff))
  #define OPCODE_LWZU(rd,d,ra) \
    (0x84000000 | (rd) << 21 | (ra) << 16 | ((d) & 0xffff))
  #define OPCODE_MTCTR(rd) (0x7C0903A6 | (rd) << 21)
  #define OPCODE_RLWINM(ra,rs,sh,mb,me) \
    (0x54000000 | (rs) << 21 | (ra) << 16 | (sh) << 11 | (mb) << 6 | (me) << 1)
  
  #define OPCODE_LI(rd,simm)    OPCODE_ADDI(rd,0,simm)
  #define OPCODE_ADDIS_HI(rd,ra,value) \
    OPCODE_ADDIS(rd,ra,((value) + 0x8000) >> 16)
  #define OPCODE_LIS_HI(rd,value) OPCODE_ADDIS_HI(rd,0,value)
  #define OPCODE_SLWI(ra,rs,sh) OPCODE_RLWINM(ra,rs,sh,0,31-sh)
  
  
  #define PPC_DCBST(where) asm volatile ("dcbst 0,%0" : : "r"(where) : "memory")
  #define PPC_SYNC asm volatile ("sync" : : : "memory")
  #define PPC_ISYNC asm volatile ("sync; isync" : : : "memory")
  #define PPC_ICBI(where) asm volatile ("icbi 0,%0" : : "r"(where) : "memory")
  #define PPC_DIE asm volatile ("tweq 0,0")
  
  /* Here we define the magic numbers that this dynamic loader should accept */
  
  #define MAGIC1 EM_PPC
  #undef  MAGIC2
  /* Used for error messages */
  #define ELF_TARGET "powerpc"
  
  struct elf_resolve;
  extern unsigned long _dl_linux_resolver(struct elf_resolve * tpnt, int reloc_entry);
  void _dl_init_got(unsigned long *lpnt,struct elf_resolve *tpnt);
  
  /* 4096 bytes alignment */
  #define PAGE_ALIGN 0xfffff000
  #define ADDR_ALIGN 0xfff
  #define OFFS_ALIGN 0x7ffff000
  
  /* ELF_RTYPE_CLASS_PLT iff TYPE describes relocation of a PLT entry, so
     PLT entries should not be allowed to define the value.
     ELF_RTYPE_CLASS_NOCOPY iff TYPE should not be allowed to resolve to one
     of the main executable's symbols, as for a COPY reloc.  */
  /* We never want to use a PLT entry as the destination of a
     reloc, when what is being relocated is a branch. This is
     partly for efficiency, but mostly so we avoid loops.  */
  #define elf_machine_type_class(type) \
    ((((type) == R_PPC_JMP_SLOT				\
      || (type) == R_PPC_REL24				\
      || (type) == R_PPC_ADDR24) * ELF_RTYPE_CLASS_PLT)	\
     | (((type) == R_PPC_COPY) * ELF_RTYPE_CLASS_COPY))
  
  /* The SVR4 ABI specifies that the JMPREL relocs must be inside the
     DT_RELA table.  */
  #define ELF_MACHINE_PLTREL_OVERLAP 1
  
  /* Return the value of the GOT pointer.  */
  static inline Elf32_Addr * __attribute__ ((const))
  ppc_got (void)
  {
  	Elf32_Addr *got;
  #ifdef HAVE_ASM_PPC_REL16
  	asm ("	bcl 20,31,1f\n"
  	     "1:mflr %0\n"
  	     "	addis %0,%0,_GLOBAL_OFFSET_TABLE_-1b@ha\n"
  	     "	addi %0,%0,_GLOBAL_OFFSET_TABLE_-1b@l\n"
  	     : "=b" (got) : : "lr");
  #else
  	asm (" bl _GLOBAL_OFFSET_TABLE_-4@local"
  	     : "=l" (got));
  #endif
  	return got;
  }
  
  /* Return the link-time address of _DYNAMIC, stored as
     the first value in the GOT. */
  static inline Elf32_Addr __attribute__ ((const))
  elf_machine_dynamic (void)
  {
  	return *ppc_got();
  }
  
  /* Return the run-time load address of the shared object.  */
  static inline Elf32_Addr __attribute__ ((const))
  elf_machine_load_address (void)
  {
    Elf32_Addr *branchaddr;
    Elf32_Addr runtime_dynamic;
  
    /* This is much harder than you'd expect.  Possibly I'm missing something.
       The 'obvious' way:
  
         Apparently, "bcl 20,31,$+4" is what should be used to load LR
         with the address of the next instruction.
         I think this is so that machines that do bl/blr pairing don't
         get confused.
  
       asm ("bcl 20,31,0f ;"
  	  "0: mflr 0 ;"
  	  "lis %0,0b@ha;"
  	  "addi %0,%0,0b@l;"
  	  "subf %0,%0,0"
  	  : "=b" (addr) : : "r0", "lr");
  
       doesn't work, because the linker doesn't have to (and in fact doesn't)
       update the @ha and @l references; the loader (which runs after this
       code) will do that.
  
       Instead, we use the following trick:
  
       The linker puts the _link-time_ address of _DYNAMIC at the first
       word in the GOT. We could branch to that address, if we wanted,
       by using an @local reloc; the linker works this out, so it's safe
       to use now. We can't, of course, actually branch there, because
       we'd cause an illegal instruction exception; so we need to compute
       the address ourselves. That gives us the following code: */
  
    /* Get address of the 'b _DYNAMIC@local'...  */
    asm ("bcl 20,31,0f;"
         "b _DYNAMIC@local;"
         "0:"
         : "=l"(branchaddr));
  
    /* So now work out the difference between where the branch actually points,
       and the offset of that location in memory from the start of the file.  */
    runtime_dynamic = ((Elf32_Addr) branchaddr
  		     + ((Elf32_Sword) (*branchaddr << 6 & 0xffffff00) >> 6));
  
    return runtime_dynamic - elf_machine_dynamic ();
  }
  
  static inline void
  elf_machine_relative (Elf32_Addr load_off, const Elf32_Addr rel_addr,
  		      Elf32_Word relative_count)
  {
  	 Elf32_Rela * rpnt = (void *)rel_addr;
  	--rpnt;
  	do {     /* PowerPC handles pre increment/decrement better */ 
  		Elf32_Addr *const reloc_addr = (void *) (load_off + (++rpnt)->r_offset);
  
  		*reloc_addr = load_off + rpnt->r_addend;
  	} while (--relative_count);
  }
  
  #define ARCH_NUM 1
  #define DT_PPC_GOT_IDX	(DT_NUM + OS_NUM)
  
  #define ARCH_DYNAMIC_INFO(dpnt,  dynamic, debug_addr) \
  do { \
  if (dpnt->d_tag == DT_PPC_GOT) \
       dynamic[DT_PPC_GOT_IDX] = dpnt->d_un.d_ptr; \
  } while (0)
  