Commit | Line | Data |
---|---|---|
252b5132 | 1 | /* Disassemble WDC 65816 instructions. |
6a51a8a8 | 2 | Copyright 1995, 1998, 2000, 2001, 2002 Free Software Foundation, Inc. |
252b5132 RH |
3 | |
4 | This program is free software; you can redistribute it and/or modify | |
5 | it under the terms of the GNU General Public License as published by | |
6 | the Free Software Foundation; either version 2 of the License, or | |
7 | (at your option) any later version. | |
8 | ||
9 | This program is distributed in the hope that it will be useful, | |
10 | but WITHOUT ANY WARRANTY; without even the implied warranty of | |
11 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
12 | GNU General Public License for more details. | |
13 | ||
14 | You should have received a copy of the GNU General Public License | |
15 | along with this program; if not, write to the Free Software | |
16 | Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. */ | |
17 | ||
18 | #include <stdio.h> | |
0d8dfecf | 19 | #include "sysdep.h" |
252b5132 RH |
20 | #define STATIC_TABLE |
21 | #define DEFINE_TABLE | |
22 | ||
23 | #include "w65-opc.h" | |
24 | #include "dis-asm.h" | |
25 | ||
7d352fc8 KH |
26 | static fprintf_ftype fpr; |
27 | static void *stream; | |
28 | static struct disassemble_info *local_info; | |
d83c6548 AJ |
29 | |
30 | static void print_operand PARAMS ((int, char *, unsigned int *)); | |
31 | ||
252b5132 | 32 | #if 0 |
7d352fc8 | 33 | static char *lname[] = { "r0","r1","r2","r3","r4","r5","r6","r7","s0" }; |
252b5132 | 34 | |
7d352fc8 KH |
35 | static char * |
36 | findname (val) | |
252b5132 RH |
37 | unsigned int val; |
38 | { | |
39 | if (val >= 0x10 && val <= 0x20) | |
40 | return lname[(val - 0x10) / 2]; | |
41 | return 0; | |
42 | } | |
43 | #endif | |
44 | static void | |
45 | print_operand (lookup, format, args) | |
46 | int lookup; | |
47 | char *format; | |
7d352fc8 | 48 | unsigned int *args; |
252b5132 RH |
49 | { |
50 | int val; | |
51 | int c; | |
52 | ||
53 | while (*format) | |
54 | { | |
7d352fc8 | 55 | switch (c = *format++) |
252b5132 RH |
56 | { |
57 | case '$': | |
58 | val = args[(*format++) - '0']; | |
7d352fc8 | 59 | if (lookup) |
252b5132 RH |
60 | { |
61 | #if 0 | |
7d352fc8 | 62 | name = findname (val); |
252b5132 | 63 | if (name) |
7d352fc8 | 64 | fpr (stream, "%s", name); |
252b5132 RH |
65 | else |
66 | #endif | |
7d352fc8 | 67 | local_info->print_address_func (val, local_info); |
252b5132 RH |
68 | } |
69 | else | |
70 | fpr (stream, "0x%x", val); | |
71 | ||
72 | break; | |
73 | default: | |
7d352fc8 | 74 | fpr (stream, "%c", c); |
252b5132 RH |
75 | break; |
76 | } | |
77 | } | |
78 | } | |
7d352fc8 KH |
79 | |
80 | int | |
81 | print_insn_w65 (memaddr, info) | |
252b5132 RH |
82 | bfd_vma memaddr; |
83 | struct disassemble_info *info; | |
84 | { | |
252b5132 RH |
85 | int status = 0; |
86 | unsigned char insn[4]; | |
6a51a8a8 | 87 | const struct opinfo *op; |
252b5132 | 88 | int i; |
7d352fc8 | 89 | int X = 0; |
252b5132 RH |
90 | int M = 0; |
91 | int args[2]; | |
7d352fc8 | 92 | stream = info->stream; |
252b5132 | 93 | fpr = info->fprintf_func; |
7d352fc8 KH |
94 | local_info = info; |
95 | for (i = 0; i < 4 && status == 0; i++) | |
252b5132 | 96 | { |
7d352fc8 KH |
97 | status = info->read_memory_func (memaddr + i, insn + i, 1, info); |
98 | } | |
252b5132 | 99 | |
7d352fc8 | 100 | for (op = optable; op->val != insn[0]; op++) |
252b5132 RH |
101 | ; |
102 | ||
7d352fc8 KH |
103 | fpr (stream, "%s", op->name); |
104 | ||
105 | /* Prepare all the posible operand values. */ | |
252b5132 RH |
106 | { |
107 | int size = 1; | |
108 | int asR_W65_ABS8 = insn[1]; | |
109 | int asR_W65_ABS16 = (insn[2] << 8) + asR_W65_ABS8; | |
110 | int asR_W65_ABS24 = (insn[3] << 16) + asR_W65_ABS16; | |
7d352fc8 KH |
111 | int asR_W65_PCR8 = ((char) (asR_W65_ABS8)) + memaddr + 2; |
112 | int asR_W65_PCR16 = ((short) (asR_W65_ABS16)) + memaddr + 3; | |
252b5132 | 113 | |
7d352fc8 KH |
114 | switch (op->amode) |
115 | { | |
116 | DISASM (); | |
117 | } | |
252b5132 | 118 | |
7d352fc8 | 119 | return size; |
252b5132 | 120 | } |
252b5132 | 121 | } |