136 lines
4.0 KiB
C
136 lines
4.0 KiB
C
/* tilegx-dis.c. Disassembly routines for the TILE-Gx architecture.
|
|
Copyright (C) 2011-2014 Free Software Foundation, Inc.
|
|
|
|
This file is part of the GNU opcodes library.
|
|
|
|
This program is free software; you can redistribute it and/or modify
|
|
it under the terms of the GNU General Public License as published by
|
|
the Free Software Foundation; either version 3 of the License, or
|
|
(at your option) any later version.
|
|
|
|
This program is distributed in the hope that it will be useful,
|
|
but WITHOUT ANY WARRANTY; without even the implied warranty of
|
|
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
|
|
GNU General Public License for more details.
|
|
|
|
You should have received a copy of the GNU General Public License
|
|
along with this program; if not, write to the Free Software
|
|
Foundation, Inc., 51 Franklin Street - Fifth Floor, Boston,
|
|
MA 02110-1301, USA. */
|
|
|
|
#include "sysdep.h"
|
|
#include <stddef.h>
|
|
#include <assert.h>
|
|
#include "bfd.h"
|
|
#include "elf/tilegx.h"
|
|
#include "elf-bfd.h"
|
|
#include "dis-asm.h"
|
|
#include "opcode/tilegx.h"
|
|
|
|
|
|
int
|
|
print_insn_tilegx (bfd_vma memaddr, disassemble_info *info)
|
|
{
|
|
struct tilegx_decoded_instruction
|
|
decoded[TILEGX_MAX_INSTRUCTIONS_PER_BUNDLE];
|
|
bfd_byte opbuf[TILEGX_BUNDLE_SIZE_IN_BYTES];
|
|
int status, i, num_instructions, num_printed;
|
|
tilegx_mnemonic padding_mnemonic;
|
|
|
|
status = (*info->read_memory_func) (memaddr, opbuf,
|
|
TILEGX_BUNDLE_SIZE_IN_BYTES, info);
|
|
if (status != 0)
|
|
{
|
|
(*info->memory_error_func) (status, memaddr, info);
|
|
return -1;
|
|
}
|
|
|
|
info->bytes_per_line = TILEGX_BUNDLE_SIZE_IN_BYTES;
|
|
info->bytes_per_chunk = TILEGX_BUNDLE_SIZE_IN_BYTES;
|
|
info->octets_per_byte = 1;
|
|
info->display_endian = BFD_ENDIAN_LITTLE;
|
|
|
|
/* Parse the instructions in the bundle. */
|
|
num_instructions =
|
|
parse_insn_tilegx (bfd_getl64 (opbuf), memaddr, decoded);
|
|
|
|
/* Print the instructions in the bundle. */
|
|
info->fprintf_func (info->stream, "{ ");
|
|
num_printed = 0;
|
|
|
|
/* Determine which nop opcode is used for padding and should be skipped. */
|
|
padding_mnemonic = TILEGX_OPC_FNOP;
|
|
for (i = 0; i < num_instructions; i++)
|
|
{
|
|
if (!decoded[i].opcode->can_bundle)
|
|
{
|
|
/* Instructions that cannot be bundled are padded out with nops,
|
|
rather than fnops. Displaying them is always clutter. */
|
|
padding_mnemonic = TILEGX_OPC_NOP;
|
|
break;
|
|
}
|
|
}
|
|
|
|
for (i = 0; i < num_instructions; i++)
|
|
{
|
|
const struct tilegx_opcode *opcode = decoded[i].opcode;
|
|
const char *name;
|
|
int j;
|
|
|
|
/* Do not print out fnops, unless everything is an fnop, in
|
|
which case we will print out just the last one. */
|
|
if (opcode->mnemonic == padding_mnemonic
|
|
&& (num_printed > 0 || i + 1 < num_instructions))
|
|
continue;
|
|
|
|
if (num_printed > 0)
|
|
info->fprintf_func (info->stream, " ; ");
|
|
++num_printed;
|
|
|
|
name = opcode->name;
|
|
if (name == NULL)
|
|
name = "<invalid>";
|
|
info->fprintf_func (info->stream, "%s", name);
|
|
|
|
for (j = 0; j < opcode->num_operands; j++)
|
|
{
|
|
bfd_vma num;
|
|
const struct tilegx_operand *op;
|
|
const char *spr_name;
|
|
|
|
if (j > 0)
|
|
info->fprintf_func (info->stream, ",");
|
|
info->fprintf_func (info->stream, " ");
|
|
|
|
num = decoded[i].operand_values[j];
|
|
|
|
op = decoded[i].operands[j];
|
|
switch (op->type)
|
|
{
|
|
case TILEGX_OP_TYPE_REGISTER:
|
|
info->fprintf_func (info->stream, "%s",
|
|
tilegx_register_names[(int) num]);
|
|
break;
|
|
case TILEGX_OP_TYPE_SPR:
|
|
spr_name = get_tilegx_spr_name (num);
|
|
if (spr_name != NULL)
|
|
info->fprintf_func (info->stream, "%s", spr_name);
|
|
else
|
|
info->fprintf_func (info->stream, "%d", (int)num);
|
|
break;
|
|
case TILEGX_OP_TYPE_IMMEDIATE:
|
|
info->fprintf_func (info->stream, "%d", (int)num);
|
|
break;
|
|
case TILEGX_OP_TYPE_ADDRESS:
|
|
info->print_address_func (num, info);
|
|
break;
|
|
default:
|
|
abort ();
|
|
}
|
|
}
|
|
}
|
|
info->fprintf_func (info->stream, " }");
|
|
|
|
return TILEGX_BUNDLE_SIZE_IN_BYTES;
|
|
}
|