balloon: Don't balloon roms
[qemu.git] / disas / tci.c
1 /*
2 * Tiny Code Interpreter for QEMU - disassembler
3 *
4 * Copyright (c) 2011 Stefan Weil
5 *
6 * This program is free software: you can redistribute it and/or modify
7 * it under the terms of the GNU General Public License as published by
8 * the Free Software Foundation, either version 2 of the License, or
9 * (at your option) any later version.
10 *
11 * This program is distributed in the hope that it will be useful,
12 * but WITHOUT ANY WARRANTY; without even the implied warranty of
13 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
14 * GNU General Public License for more details.
15 *
16 * You should have received a copy of the GNU General Public License
17 * along with this program. If not, see <http://www.gnu.org/licenses/>.
18 */
19
20 #include "qemu/osdep.h"
21 #include "qemu-common.h"
22 #include "disas/bfd.h"
23 #include "tcg/tcg.h"
24
25 /* Disassemble TCI bytecode. */
26 int print_insn_tci(bfd_vma addr, disassemble_info *info)
27 {
28 int length;
29 uint8_t byte;
30 int status;
31 TCGOpcode op;
32
33 status = info->read_memory_func(addr, &byte, 1, info);
34 if (status != 0) {
35 info->memory_error_func(status, addr, info);
36 return -1;
37 }
38 op = byte;
39
40 addr++;
41 status = info->read_memory_func(addr, &byte, 1, info);
42 if (status != 0) {
43 info->memory_error_func(status, addr, info);
44 return -1;
45 }
46 length = byte;
47
48 if (op >= tcg_op_defs_max) {
49 info->fprintf_func(info->stream, "illegal opcode %d", op);
50 } else {
51 const TCGOpDef *def = &tcg_op_defs[op];
52 int nb_oargs = def->nb_oargs;
53 int nb_iargs = def->nb_iargs;
54 int nb_cargs = def->nb_cargs;
55 /* TODO: Improve disassembler output. */
56 info->fprintf_func(info->stream, "%s\to=%d i=%d c=%d",
57 def->name, nb_oargs, nb_iargs, nb_cargs);
58 }
59
60 return length;
61 }