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 "sysdep.h" 19 #include <stdio.h> 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 } 120