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cell-binutils  2.17cvs20070401
Functions
ppc-dis.c File Reference
#include <stdio.h>
#include "sysdep.h"
#include "dis-asm.h"
#include "opcode/ppc.h"

Go to the source code of this file.

Functions

static int print_insn_powerpc (bfd_vma, struct disassemble_info *, int, int)
static int powerpc_dialect (struct disassemble_info *info)
int print_insn_big_powerpc (bfd_vma memaddr, struct disassemble_info *info)
int print_insn_little_powerpc (bfd_vma memaddr, struct disassemble_info *info)
int print_insn_rs6000 (bfd_vma memaddr, struct disassemble_info *info)
void print_ppc_disassembler_options (FILE *stream)

Function Documentation

static int powerpc_dialect ( struct disassemble_info info) [static]

Definition at line 40 of file ppc-dis.c.

{
  int dialect = PPC_OPCODE_PPC;

  if (BFD_DEFAULT_TARGET_SIZE == 64)
    dialect |= PPC_OPCODE_64;

  if (info->disassembler_options
      && strstr (info->disassembler_options, "booke") != NULL)
    dialect |= PPC_OPCODE_BOOKE | PPC_OPCODE_BOOKE64;
  else if ((info->mach == bfd_mach_ppc_e500)
          || (info->disassembler_options
              && strstr (info->disassembler_options, "e500") != NULL))
    dialect |= (PPC_OPCODE_BOOKE
              | PPC_OPCODE_SPE | PPC_OPCODE_ISEL
              | PPC_OPCODE_EFS | PPC_OPCODE_BRLOCK
              | PPC_OPCODE_PMR | PPC_OPCODE_CACHELCK
              | PPC_OPCODE_RFMCI);
  else if (info->disassembler_options
          && strstr (info->disassembler_options, "efs") != NULL)
    dialect |= PPC_OPCODE_EFS;
  else if (info->disassembler_options
          && strstr (info->disassembler_options, "e300") != NULL)
    dialect |= PPC_OPCODE_E300 | PPC_OPCODE_CLASSIC | PPC_OPCODE_COMMON;
  else if (info->disassembler_options
          && strstr (info->disassembler_options, "440") != NULL)
    dialect |= PPC_OPCODE_BOOKE | PPC_OPCODE_32
      | PPC_OPCODE_440 | PPC_OPCODE_ISEL | PPC_OPCODE_RFMCI;
  else
    dialect |= (PPC_OPCODE_403 | PPC_OPCODE_601 | PPC_OPCODE_CLASSIC
              | PPC_OPCODE_COMMON | PPC_OPCODE_ALTIVEC);

  if (info->disassembler_options
      && strstr (info->disassembler_options, "power4") != NULL)
    dialect |= PPC_OPCODE_POWER4;

  if (info->disassembler_options
      && strstr (info->disassembler_options, "power5") != NULL)
    dialect |= PPC_OPCODE_POWER4 | PPC_OPCODE_POWER5;

  if (info->disassembler_options
      && strstr (info->disassembler_options, "cell") != NULL)
    dialect |= PPC_OPCODE_POWER4 | PPC_OPCODE_CELL | PPC_OPCODE_ALTIVEC;

  if (info->disassembler_options
      && strstr (info->disassembler_options, "power6") != NULL)
    dialect |= PPC_OPCODE_POWER4 | PPC_OPCODE_POWER5 | PPC_OPCODE_POWER6 | PPC_OPCODE_ALTIVEC;

  if (info->disassembler_options
      && strstr (info->disassembler_options, "any") != NULL)
    dialect |= PPC_OPCODE_ANY;

  if (info->disassembler_options)
    {
      if (strstr (info->disassembler_options, "32") != NULL)
       dialect &= ~PPC_OPCODE_64;
      else if (strstr (info->disassembler_options, "64") != NULL)
       dialect |= PPC_OPCODE_64;
    }

  info->private_data = (char *) 0 + dialect;
  return dialect;
}

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Definition at line 107 of file ppc-dis.c.

{
  int dialect = (char *) info->private_data - (char *) 0;
  return print_insn_powerpc (memaddr, info, 1, dialect);
}

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Definition at line 116 of file ppc-dis.c.

{
  int dialect = (char *) info->private_data - (char *) 0;
  return print_insn_powerpc (memaddr, info, 0, dialect);
}

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static int print_insn_powerpc ( bfd_vma  memaddr,
struct disassemble_info info,
int  bigendian,
int  dialect 
) [static]

Definition at line 133 of file ppc-dis.c.

{
  bfd_byte buffer[4];
  int status;
  unsigned long insn;
  const struct powerpc_opcode *opcode;
  const struct powerpc_opcode *opcode_end;
  unsigned long op;

  if (dialect == 0)
    dialect = powerpc_dialect (info);

  status = (*info->read_memory_func) (memaddr, buffer, 4, info);
  if (status != 0)
    {
      (*info->memory_error_func) (status, memaddr, info);
      return -1;
    }

  if (bigendian)
    insn = bfd_getb32 (buffer);
  else
    insn = bfd_getl32 (buffer);

  /* Get the major opcode of the instruction.  */
  op = PPC_OP (insn);

  /* Find the first match in the opcode table.  We could speed this up
     a bit by doing a binary search on the major opcode.  */
  opcode_end = powerpc_opcodes + powerpc_num_opcodes;
 again:
  for (opcode = powerpc_opcodes; opcode < opcode_end; opcode++)
    {
      unsigned long table_op;
      const unsigned char *opindex;
      const struct powerpc_operand *operand;
      int invalid;
      int need_comma;
      int need_paren;

      table_op = PPC_OP (opcode->opcode);
      if (op < table_op)
       break;
      if (op > table_op)
       continue;

      if ((insn & opcode->mask) != opcode->opcode
         || (opcode->flags & dialect) == 0)
       continue;

      /* Make two passes over the operands.  First see if any of them
        have extraction functions, and, if they do, make sure the
        instruction is valid.  */
      invalid = 0;
      for (opindex = opcode->operands; *opindex != 0; opindex++)
       {
         operand = powerpc_operands + *opindex;
         if (operand->extract)
           (*operand->extract) (insn, dialect, &invalid);
       }
      if (invalid)
       continue;

      /* The instruction is valid.  */
      if (opcode->operands[0] != 0)
       (*info->fprintf_func) (info->stream, "%-7s ", opcode->name);
      else
       (*info->fprintf_func) (info->stream, "%s", opcode->name);

      /* Now extract and print the operands.  */
      need_comma = 0;
      need_paren = 0;
      for (opindex = opcode->operands; *opindex != 0; opindex++)
       {
         long value;

         operand = powerpc_operands + *opindex;

         /* Operands that are marked FAKE are simply ignored.  We
            already made sure that the extract function considered
            the instruction to be valid.  */
         if ((operand->flags & PPC_OPERAND_FAKE) != 0)
           continue;

         /* Extract the value from the instruction.  */
         if (operand->extract)
           value = (*operand->extract) (insn, dialect, &invalid);
         else
           {
             value = (insn >> operand->shift) & ((1 << operand->bits) - 1);
             if ((operand->flags & PPC_OPERAND_SIGNED) != 0
                && (value & (1 << (operand->bits - 1))) != 0)
              value -= 1 << operand->bits;
           }

         /* If the operand is optional, and the value is zero, don't
            print anything.  */
         if ((operand->flags & PPC_OPERAND_OPTIONAL) != 0
             && (operand->flags & PPC_OPERAND_NEXT) == 0
             && value == 0)
           continue;

         if (need_comma)
           {
             (*info->fprintf_func) (info->stream, ",");
             need_comma = 0;
           }

         /* Print the operand as directed by the flags.  */
         if ((operand->flags & PPC_OPERAND_GPR) != 0
             || ((operand->flags & PPC_OPERAND_GPR_0) != 0 && value != 0))
           (*info->fprintf_func) (info->stream, "r%ld", value);
         else if ((operand->flags & PPC_OPERAND_FPR) != 0)
           (*info->fprintf_func) (info->stream, "f%ld", value);
         else if ((operand->flags & PPC_OPERAND_VR) != 0)
           (*info->fprintf_func) (info->stream, "v%ld", value);
         else if ((operand->flags & PPC_OPERAND_RELATIVE) != 0)
           (*info->print_address_func) (memaddr + value, info);
         else if ((operand->flags & PPC_OPERAND_ABSOLUTE) != 0)
           (*info->print_address_func) ((bfd_vma) value & 0xffffffff, info);
         else if ((operand->flags & PPC_OPERAND_CR) == 0
                 || (dialect & PPC_OPCODE_PPC) == 0)
           (*info->fprintf_func) (info->stream, "%ld", value);
         else
           {
             if (operand->bits == 3)
              (*info->fprintf_func) (info->stream, "cr%ld", value);
             else
              {
                static const char *cbnames[4] = { "lt", "gt", "eq", "so" };
                int cr;
                int cc;

                cr = value >> 2;
                if (cr != 0)
                  (*info->fprintf_func) (info->stream, "4*cr%d+", cr);
                cc = value & 3;
                (*info->fprintf_func) (info->stream, "%s", cbnames[cc]);
              }
           }

         if (need_paren)
           {
             (*info->fprintf_func) (info->stream, ")");
             need_paren = 0;
           }

         if ((operand->flags & PPC_OPERAND_PARENS) == 0)
           need_comma = 1;
         else
           {
             (*info->fprintf_func) (info->stream, "(");
             need_paren = 1;
           }
       }

      /* We have found and printed an instruction; return.  */
      return 4;
    }

  if ((dialect & PPC_OPCODE_ANY) != 0)
    {
      dialect = ~PPC_OPCODE_ANY;
      goto again;
    }

  /* We could not find a match.  */
  (*info->fprintf_func) (info->stream, ".long 0x%lx", insn);

  return 4;
}

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Definition at line 125 of file ppc-dis.c.

{
  return print_insn_powerpc (memaddr, info, 1, PPC_OPCODE_POWER);
}

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void print_ppc_disassembler_options ( FILE *  stream)

Definition at line 309 of file ppc-dis.c.

{
  fprintf (stream, "\n\
The following PPC specific disassembler options are supported for use with\n\
the -M switch:\n");

  fprintf (stream, "  booke|booke32|booke64    Disassemble the BookE instructions\n");
  fprintf (stream, "  e300                     Disassemble the e300 instructions\n");
  fprintf (stream, "  e500|e500x2              Disassemble the e500 instructions\n");
  fprintf (stream, "  440                      Disassemble the 440 instructions\n");
  fprintf (stream, "  efs                      Disassemble the EFS instructions\n");
  fprintf (stream, "  power4                   Disassemble the Power4 instructions\n");
  fprintf (stream, "  power5                   Disassemble the Power5 instructions\n");
  fprintf (stream, "  power6                   Disassemble the Power6 instructions\n");
  fprintf (stream, "  32                       Do not disassemble 64-bit instructions\n");
  fprintf (stream, "  64                       Allow disassembly of 64-bit instructions\n");
}

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