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252b5132 RH |
1 | /* Disassemble WDC 65816 instructions. |
2 | Copyright (C) 1995, 1998 Free Software Foundation, Inc. | |
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 | ||
26 | static fprintf_ftype fpr; | |
27 | static void *stream; | |
28 | static struct disassemble_info *local_info; | |
29 | #if 0 | |
30 | static char *lname[] = {"r0","r1","r2","r3","r4","r5","r6","r7","s0"}; | |
31 | ||
32 | static char *findname (val) | |
33 | unsigned int val; | |
34 | { | |
35 | if (val >= 0x10 && val <= 0x20) | |
36 | return lname[(val - 0x10) / 2]; | |
37 | return 0; | |
38 | } | |
39 | #endif | |
40 | static void | |
41 | print_operand (lookup, format, args) | |
42 | int lookup; | |
43 | char *format; | |
44 | unsigned int *args; | |
45 | { | |
46 | int val; | |
47 | int c; | |
48 | ||
49 | while (*format) | |
50 | { | |
51 | switch ( c = *format++) | |
52 | { | |
53 | case '$': | |
54 | val = args[(*format++) - '0']; | |
55 | if (lookup) | |
56 | { | |
57 | #if 0 | |
58 | name = findname(val); | |
59 | if (name) | |
60 | fpr(stream, "%s", name); | |
61 | else | |
62 | #endif | |
63 | local_info->print_address_func (val, local_info); | |
64 | } | |
65 | else | |
66 | fpr (stream, "0x%x", val); | |
67 | ||
68 | break; | |
69 | default: | |
70 | fpr(stream,"%c", c); | |
71 | break; | |
72 | } | |
73 | } | |
74 | } | |
75 | int | |
76 | print_insn_w65(memaddr, info) | |
77 | bfd_vma memaddr; | |
78 | struct disassemble_info *info; | |
79 | { | |
80 | ||
81 | ||
82 | int status = 0; | |
83 | unsigned char insn[4]; | |
84 | register struct opinfo *op; | |
85 | int i; | |
86 | int X =0; | |
87 | int M = 0; | |
88 | int args[2]; | |
89 | stream = info->stream; | |
90 | fpr = info->fprintf_func; | |
91 | local_info = info; | |
92 | for (i = 0; i <4 && status == 0; i++) | |
93 | { | |
94 | status = info->read_memory_func(memaddr+i, insn + i, 1, info); | |
95 | } | |
96 | ||
97 | ||
98 | for (op = optable; op->val != insn[0]; op++) | |
99 | ; | |
100 | ||
101 | fpr(stream,"%s", op->name); | |
102 | ||
103 | /* Prepare all the posible operand values */ | |
104 | { | |
105 | int size = 1; | |
106 | int asR_W65_ABS8 = insn[1]; | |
107 | int asR_W65_ABS16 = (insn[2] << 8) + asR_W65_ABS8; | |
108 | int asR_W65_ABS24 = (insn[3] << 16) + asR_W65_ABS16; | |
109 | int asR_W65_PCR8 = ((char)(asR_W65_ABS8)) + memaddr + 2; | |
110 | int asR_W65_PCR16 = ((short)(asR_W65_ABS16)) + memaddr + 3; | |
111 | ||
112 | switch (op->amode) { | |
113 | DISASM(); | |
114 | } | |
115 | ||
116 | return size; | |
117 | } | |
118 | ||
119 | } |