| 1 | /* Disassemble WDC 65816 instructions. |
| 2 | Copyright 1995, 1998, 2000, 2001, 2002, 2005, 2007 |
| 3 | Free Software Foundation, Inc. |
| 4 | |
| 5 | This file is part of the GNU opcodes library. |
| 6 | |
| 7 | This library is free software; you can redistribute it and/or modify |
| 8 | it under the terms of the GNU General Public License as published by |
| 9 | the Free Software Foundation; either version 3, or (at your option) |
| 10 | any later version. |
| 11 | |
| 12 | It is distributed in the hope that it will be useful, but WITHOUT |
| 13 | ANY WARRANTY; without even the implied warranty of MERCHANTABILITY |
| 14 | or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public |
| 15 | License for more details. |
| 16 | |
| 17 | You should have received a copy of the GNU General Public License |
| 18 | along with this program; if not, write to the Free Software |
| 19 | Foundation, Inc., 51 Franklin Street - Fifth Floor, Boston, |
| 20 | MA 02110-1301, USA. */ |
| 21 | |
| 22 | #include <stdio.h> |
| 23 | #include "sysdep.h" |
| 24 | #define STATIC_TABLE |
| 25 | #define DEFINE_TABLE |
| 26 | |
| 27 | #include "w65-opc.h" |
| 28 | #include "dis-asm.h" |
| 29 | |
| 30 | static fprintf_ftype fpr; |
| 31 | static void *stream; |
| 32 | static struct disassemble_info *local_info; |
| 33 | |
| 34 | static void |
| 35 | print_operand (int lookup, char *format, int *args) |
| 36 | { |
| 37 | int val; |
| 38 | int c; |
| 39 | |
| 40 | while (*format) |
| 41 | { |
| 42 | switch (c = *format++) |
| 43 | { |
| 44 | case '$': |
| 45 | val = args[(*format++) - '0']; |
| 46 | if (lookup) |
| 47 | local_info->print_address_func (val, local_info); |
| 48 | else |
| 49 | fpr (stream, "0x%x", val); |
| 50 | |
| 51 | break; |
| 52 | default: |
| 53 | fpr (stream, "%c", c); |
| 54 | break; |
| 55 | } |
| 56 | } |
| 57 | } |
| 58 | |
| 59 | int |
| 60 | print_insn_w65 (bfd_vma memaddr, struct disassemble_info *info) |
| 61 | { |
| 62 | int status = 0; |
| 63 | unsigned char insn[4]; |
| 64 | const struct opinfo *op; |
| 65 | int i; |
| 66 | int X = 0; |
| 67 | int M = 0; |
| 68 | int args[2]; |
| 69 | |
| 70 | stream = info->stream; |
| 71 | fpr = info->fprintf_func; |
| 72 | local_info = info; |
| 73 | |
| 74 | for (i = 0; i < 4 && status == 0; i++) |
| 75 | status = info->read_memory_func (memaddr + i, insn + i, 1, info); |
| 76 | |
| 77 | for (op = optable; op->val != insn[0]; op++) |
| 78 | ; |
| 79 | |
| 80 | fpr (stream, "%s", op->name); |
| 81 | |
| 82 | /* Prepare all the posible operand values. */ |
| 83 | { |
| 84 | int size = 1; |
| 85 | int asR_W65_ABS8 = insn[1]; |
| 86 | int asR_W65_ABS16 = (insn[2] << 8) + asR_W65_ABS8; |
| 87 | int asR_W65_ABS24 = (insn[3] << 16) + asR_W65_ABS16; |
| 88 | int asR_W65_PCR8 = ((char) (asR_W65_ABS8)) + memaddr + 2; |
| 89 | int asR_W65_PCR16 = ((short) (asR_W65_ABS16)) + memaddr + 3; |
| 90 | |
| 91 | switch (op->amode) |
| 92 | { |
| 93 | DISASM (); |
| 94 | } |
| 95 | |
| 96 | return size; |
| 97 | } |
| 98 | } |