Commit | Line | Data |
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252b5132 | 1 | /* Disassemble WDC 65816 instructions. |
53c9ebc5 AM |
2 | Copyright 1995, 1998, 2000, 2001, 2002, 2005 |
3 | Free Software Foundation, Inc. | |
252b5132 RH |
4 | |
5 | This program is free software; you can redistribute it and/or modify | |
6 | it under the terms of the GNU General Public License as published by | |
7 | the Free Software Foundation; either version 2 of the License, or | |
8 | (at your option) any later version. | |
9 | ||
10 | This program is distributed in the hope that it will be useful, | |
11 | but WITHOUT ANY WARRANTY; without even the implied warranty of | |
12 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
13 | GNU General Public License for more details. | |
14 | ||
15 | You should have received a copy of the GNU General Public License | |
16 | along with this program; if not, write to the Free Software | |
f4321104 | 17 | Foundation, Inc., 51 Franklin Street - Fifth Floor, Boston, MA 02110-1301, USA. */ |
252b5132 RH |
18 | |
19 | #include <stdio.h> | |
0d8dfecf | 20 | #include "sysdep.h" |
252b5132 RH |
21 | #define STATIC_TABLE |
22 | #define DEFINE_TABLE | |
23 | ||
24 | #include "w65-opc.h" | |
25 | #include "dis-asm.h" | |
26 | ||
7d352fc8 KH |
27 | static fprintf_ftype fpr; |
28 | static void *stream; | |
29 | static struct disassemble_info *local_info; | |
d83c6548 | 30 | |
53c9ebc5 | 31 | static void print_operand PARAMS ((int, char *, int *)); |
d83c6548 | 32 | |
252b5132 | 33 | #if 0 |
7d352fc8 | 34 | static char *lname[] = { "r0","r1","r2","r3","r4","r5","r6","r7","s0" }; |
252b5132 | 35 | |
7d352fc8 KH |
36 | static char * |
37 | findname (val) | |
252b5132 RH |
38 | unsigned int val; |
39 | { | |
40 | if (val >= 0x10 && val <= 0x20) | |
41 | return lname[(val - 0x10) / 2]; | |
42 | return 0; | |
43 | } | |
44 | #endif | |
45 | static void | |
46 | print_operand (lookup, format, args) | |
47 | int lookup; | |
48 | char *format; | |
53c9ebc5 | 49 | int *args; |
252b5132 RH |
50 | { |
51 | int val; | |
52 | int c; | |
53 | ||
54 | while (*format) | |
55 | { | |
7d352fc8 | 56 | switch (c = *format++) |
252b5132 RH |
57 | { |
58 | case '$': | |
59 | val = args[(*format++) - '0']; | |
7d352fc8 | 60 | if (lookup) |
252b5132 RH |
61 | { |
62 | #if 0 | |
7d352fc8 | 63 | name = findname (val); |
252b5132 | 64 | if (name) |
7d352fc8 | 65 | fpr (stream, "%s", name); |
252b5132 RH |
66 | else |
67 | #endif | |
7d352fc8 | 68 | local_info->print_address_func (val, local_info); |
252b5132 RH |
69 | } |
70 | else | |
71 | fpr (stream, "0x%x", val); | |
72 | ||
73 | break; | |
74 | default: | |
7d352fc8 | 75 | fpr (stream, "%c", c); |
252b5132 RH |
76 | break; |
77 | } | |
78 | } | |
79 | } | |
7d352fc8 KH |
80 | |
81 | int | |
82 | print_insn_w65 (memaddr, info) | |
252b5132 RH |
83 | bfd_vma memaddr; |
84 | struct disassemble_info *info; | |
85 | { | |
252b5132 RH |
86 | int status = 0; |
87 | unsigned char insn[4]; | |
6a51a8a8 | 88 | const struct opinfo *op; |
252b5132 | 89 | int i; |
7d352fc8 | 90 | int X = 0; |
252b5132 RH |
91 | int M = 0; |
92 | int args[2]; | |
7d352fc8 | 93 | stream = info->stream; |
252b5132 | 94 | fpr = info->fprintf_func; |
7d352fc8 KH |
95 | local_info = info; |
96 | for (i = 0; i < 4 && status == 0; i++) | |
252b5132 | 97 | { |
7d352fc8 KH |
98 | status = info->read_memory_func (memaddr + i, insn + i, 1, info); |
99 | } | |
252b5132 | 100 | |
7d352fc8 | 101 | for (op = optable; op->val != insn[0]; op++) |
252b5132 RH |
102 | ; |
103 | ||
7d352fc8 KH |
104 | fpr (stream, "%s", op->name); |
105 | ||
106 | /* Prepare all the posible operand values. */ | |
252b5132 RH |
107 | { |
108 | int size = 1; | |
109 | int asR_W65_ABS8 = insn[1]; | |
110 | int asR_W65_ABS16 = (insn[2] << 8) + asR_W65_ABS8; | |
111 | int asR_W65_ABS24 = (insn[3] << 16) + asR_W65_ABS16; | |
7d352fc8 KH |
112 | int asR_W65_PCR8 = ((char) (asR_W65_ABS8)) + memaddr + 2; |
113 | int asR_W65_PCR16 = ((short) (asR_W65_ABS16)) + memaddr + 3; | |
252b5132 | 114 | |
7d352fc8 KH |
115 | switch (op->amode) |
116 | { | |
117 | DISASM (); | |
118 | } | |
252b5132 | 119 | |
7d352fc8 | 120 | return size; |
252b5132 | 121 | } |
252b5132 | 122 | } |