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tcg: Add tci disassembler 

Signed-off-by: Stefan Weil <sw@weilnetz.de>
This commit is contained in:
Stefan Weil 2011-10-05 20:03:53 +02:00 committed by Stefan Weil
parent 7657f4bf68
commit 5826e51917
3 changed files with 63 additions and 1 deletions
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1
dis-asm.h
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@ -365,6 +365,7 @@ typedef struct disassemble_info {
target address. Return number of bytes processed. */
typedef int (*disassembler_ftype) (bfd_vma, disassemble_info *);
int print_insn_tci(bfd_vma, disassemble_info*);
int print_insn_big_mips (bfd_vma, disassemble_info*);
int print_insn_little_mips (bfd_vma, disassemble_info*);
int print_insn_i386 (bfd_vma, disassemble_info*);

4
disas.c
View File

@ -273,7 +273,9 @@ void disas(FILE *out, void *code, unsigned long size)
#else
disasm_info.endian = BFD_ENDIAN_LITTLE;
#endif
#if defined(__i386__)
#if defined(CONFIG_TCG_INTERPRETER)
print_insn = print_insn_tci;
#elif defined(__i386__)
disasm_info.mach = bfd_mach_i386_i386;
print_insn = print_insn_i386;
#elif defined(__x86_64__)

59
tci-dis.c Normal file
View File

@ -0,0 +1,59 @@
/*
* Tiny Code Interpreter for QEMU - disassembler
*
* Copyright (c) 2011 Stefan Weil
*
* 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 2 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, see <http://www.gnu.org/licenses/>.
*/
#include "dis-asm.h"
#include "tcg/tcg.h"
/* Disassemble TCI bytecode. */
int print_insn_tci(bfd_vma addr, disassemble_info *info)
{
int length;
uint8_t byte;
int status;
TCGOpcode op;
status = info->read_memory_func(addr, &byte, 1, info);
if (status != 0) {
info->memory_error_func(status, addr, info);
return -1;
}
op = byte;
addr++;
status = info->read_memory_func(addr, &byte, 1, info);
if (status != 0) {
info->memory_error_func(status, addr, info);
return -1;
}
length = byte;
if (op >= tcg_op_defs_max) {
info->fprintf_func(info->stream, "illegal opcode %d", op);
} else {
const TCGOpDef *def = &tcg_op_defs[op];
int nb_oargs = def->nb_oargs;
int nb_iargs = def->nb_iargs;
int nb_cargs = def->nb_cargs;
/* TODO: Improve disassembler output. */
info->fprintf_func(info->stream, "%s\to=%d i=%d c=%d",
def->name, nb_oargs, nb_iargs, nb_cargs);
}
return length;
}