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

Go to the source code of this file.

Functions

static void init_spu_disassemble (void)
static struct spu_opcodeget_index_for_opcode (unsigned int insn)
int print_insn_spu (bfd_vma memaddr, struct disassemble_info *info)

Variables

const int spu_num_opcodes
static struct spu_opcodespu_disassemble_table [(1<< 11)]

Function Documentation

static struct spu_opcode* get_index_for_opcode ( unsigned int  insn) [static, read]

Definition at line 53 of file spu-dis.c.

{
  const struct spu_opcode *index;
  unsigned int opcode = insn >> (32-11);

  /* Init the table.  This assumes that element 0/opcode 0 (currently
   * NOP) is always used */
  if (spu_disassemble_table[0] == 0)
    init_spu_disassemble ();

  if ((index = spu_disassemble_table[opcode & 0x780]) != 0
      && index->insn_type == RRR)
    return index;

  if ((index = spu_disassemble_table[opcode & 0x7f0]) != 0
      && (index->insn_type == RI18 || index->insn_type == LBT))
    return index;

  if ((index = spu_disassemble_table[opcode & 0x7f8]) != 0
      && index->insn_type == RI10)
    return index;

  if ((index = spu_disassemble_table[opcode & 0x7fc]) != 0
      && (index->insn_type == RI16))
    return index;

  if ((index = spu_disassemble_table[opcode & 0x7fe]) != 0
      && (index->insn_type == RI8))
    return index;

  if ((index = spu_disassemble_table[opcode & 0x7ff]) != 0)
    return index;

  return 0;
}

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static void init_spu_disassemble ( void  ) [static]

Definition at line 35 of file spu-dis.c.

{
  int i;

  /* If two instructions have the same opcode then we prefer the first
   * one.  In most cases it is just an alternate mnemonic. */
  for (i = 0; i < spu_num_opcodes; i++)
    {
      int o = spu_opcodes[i].opcode;
      if (o >= (1 << 11))
       abort ();
      if (spu_disassemble_table[o] == 0)
       spu_disassemble_table[o] = &spu_opcodes[i];
    }
}

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int print_insn_spu ( bfd_vma  memaddr,
struct disassemble_info info 
)

Definition at line 92 of file spu-dis.c.

{
  bfd_byte buffer[4];
  int value;
  int hex_value;
  int status;
  unsigned int insn;
  const struct spu_opcode *index;
  enum spu_insns tag;

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

  insn = bfd_getb32 (buffer);

  index = get_index_for_opcode (insn);

  if (index == 0)
    {
      (*info->fprintf_func) (info->stream, ".long 0x%x", insn);
    }
  else
    {
      int i;
      int paren = 0;
      tag = (enum spu_insns)(index - spu_opcodes);
      (*info->fprintf_func) (info->stream, "%s", index->mnemonic);
      if (tag == M_BI || tag == M_BISL || tag == M_IRET || tag == M_BISLED
         || tag == M_BIHNZ || tag == M_BIHZ || tag == M_BINZ || tag == M_BIZ
          || tag == M_SYNC || tag == M_HBR)
       {
         int fb = (insn >> (32-18)) & 0x7f;
         if (fb & 0x40)
           (*info->fprintf_func) (info->stream, tag == M_SYNC ? "c" : "p");
         if (fb & 0x20)
           (*info->fprintf_func) (info->stream, "d");
         if (fb & 0x10)
           (*info->fprintf_func) (info->stream, "e");
       }
      if (index->arg[0] != 0)
       (*info->fprintf_func) (info->stream, "\t");
      hex_value = 0;
      for (i = 1;  i <= index->arg[0]; i++)
       {
         int arg = index->arg[i];
         if (arg != A_P && !paren && i > 1)
           (*info->fprintf_func) (info->stream, ",");

         switch (arg)
           {
           case A_T:
             (*info->fprintf_func) (info->stream, "$%d",
                                 DECODE_INSN_RT (insn));
             break;
           case A_A:
             (*info->fprintf_func) (info->stream, "$%d",
                                 DECODE_INSN_RA (insn));
             break;
           case A_B:
             (*info->fprintf_func) (info->stream, "$%d",
                                 DECODE_INSN_RB (insn));
             break;
           case A_C:
             (*info->fprintf_func) (info->stream, "$%d",
                                 DECODE_INSN_RC (insn));
             break;
           case A_S:
             (*info->fprintf_func) (info->stream, "$sp%d",
                                 DECODE_INSN_RA (insn));
             break;
           case A_H:
             (*info->fprintf_func) (info->stream, "$ch%d",
                                 DECODE_INSN_RA (insn));
             break;
           case A_P:
             paren++;
             (*info->fprintf_func) (info->stream, "(");
             break;
           case A_U7A:
             (*info->fprintf_func) (info->stream, "%d",
                                 173 - DECODE_INSN_U8 (insn));
             break;
           case A_U7B:
             (*info->fprintf_func) (info->stream, "%d",
                                 155 - DECODE_INSN_U8 (insn));
             break;
           case A_S3:
           case A_S6:
           case A_S7:
           case A_S7N:
           case A_U3:
           case A_U5:
           case A_U6:
           case A_U7:
             hex_value = DECODE_INSN_I7 (insn);
             (*info->fprintf_func) (info->stream, "%d", hex_value);
             break;
           case A_S11:
             (*info->print_address_func) (memaddr + DECODE_INSN_I9a (insn) * 4,
                                      info);
             break;
           case A_S11I:
             (*info->print_address_func) (memaddr + DECODE_INSN_I9b (insn) * 4,
                                      info);
             break;
           case A_S10:
           case A_S10B:
             hex_value = DECODE_INSN_I10 (insn);
             (*info->fprintf_func) (info->stream, "%d", hex_value);
             break;
           case A_S14:
             hex_value = DECODE_INSN_I10 (insn) * 16;
             (*info->fprintf_func) (info->stream, "%d", hex_value);
             break;
           case A_S16:
             hex_value = DECODE_INSN_I16 (insn);
             (*info->fprintf_func) (info->stream, "%d", hex_value);
             break;
           case A_X16:
             hex_value = DECODE_INSN_U16 (insn);
             (*info->fprintf_func) (info->stream, "%u", hex_value);
             break;
           case A_R18:
             value = DECODE_INSN_I16 (insn) * 4;
             if (value == 0)
              (*info->fprintf_func) (info->stream, "%d", value);
             else
              {
                hex_value = memaddr + value;
                (*info->print_address_func) (hex_value & 0x3ffff, info);
              }
             break;
           case A_S18:
             value = DECODE_INSN_U16 (insn) * 4;
             if (value == 0)
              (*info->fprintf_func) (info->stream, "%d", value);
             else
              (*info->print_address_func) (value, info);
             break;
           case A_U18:
             value = DECODE_INSN_U18 (insn);
             if (value == 0 || !(*info->symbol_at_address_func)(0, info))
              {
                hex_value = value;
                (*info->fprintf_func) (info->stream, "%u", value);
              }
             else
              (*info->print_address_func) (value, info);
             break;
           case A_U14:
             hex_value = DECODE_INSN_U14 (insn);
             (*info->fprintf_func) (info->stream, "%u", hex_value);
             break;
           }
         if (arg != A_P && paren)
           {
             (*info->fprintf_func) (info->stream, ")");
             paren--;
           }
       }
      if (hex_value > 16)
       (*info->fprintf_func) (info->stream, "\t# %x", hex_value);
    }
  return 4;
}

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Variable Documentation

Definition at line 32 of file spu-dis.c.

Definition at line 43 of file spu-opc.c.