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[/] [or1k/] [trunk/] [gdb-5.3/] [opcodes/] [w65-dis.c] - Rev 1775
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/* Disassemble WDC 65816 instructions. Copyright 1995, 1998, 2000, 2001 Free Software Foundation, Inc. This program is free software; you can redistribute it and/or modify it under the terms of the GNU General Public License as published by the Free Software Foundation; either version 2 of the License, or (at your option) any later version. This program is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for more details. You should have received a copy of the GNU General Public License along with this program; if not, write to the Free Software Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. */ #include <stdio.h> #include "sysdep.h" #define STATIC_TABLE #define DEFINE_TABLE #include "w65-opc.h" #include "dis-asm.h" static fprintf_ftype fpr; static void *stream; static struct disassemble_info *local_info; static void print_operand PARAMS ((int, char *, unsigned int *)); #if 0 static char *lname[] = { "r0","r1","r2","r3","r4","r5","r6","r7","s0" }; static char * findname (val) unsigned int val; { if (val >= 0x10 && val <= 0x20) return lname[(val - 0x10) / 2]; return 0; } #endif static void print_operand (lookup, format, args) int lookup; char *format; unsigned int *args; { int val; int c; while (*format) { switch (c = *format++) { case '$': val = args[(*format++) - '0']; if (lookup) { #if 0 name = findname (val); if (name) fpr (stream, "%s", name); else #endif local_info->print_address_func (val, local_info); } else fpr (stream, "0x%x", val); break; default: fpr (stream, "%c", c); break; } } } int print_insn_w65 (memaddr, info) bfd_vma memaddr; struct disassemble_info *info; { int status = 0; unsigned char insn[4]; register struct opinfo *op; int i; int X = 0; int M = 0; int args[2]; stream = info->stream; fpr = info->fprintf_func; local_info = info; for (i = 0; i < 4 && status == 0; i++) { status = info->read_memory_func (memaddr + i, insn + i, 1, info); } for (op = optable; op->val != insn[0]; op++) ; fpr (stream, "%s", op->name); /* Prepare all the posible operand values. */ { int size = 1; int asR_W65_ABS8 = insn[1]; int asR_W65_ABS16 = (insn[2] << 8) + asR_W65_ABS8; int asR_W65_ABS24 = (insn[3] << 16) + asR_W65_ABS16; int asR_W65_PCR8 = ((char) (asR_W65_ABS8)) + memaddr + 2; int asR_W65_PCR16 = ((short) (asR_W65_ABS16)) + memaddr + 3; switch (op->amode) { DISASM (); } return size; } }
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