1 /* Disassemble WDC 65816 instructions.
2 Copyright 1995, 1998, 2000, 2001, 2002, 2005, 2007, 2012
3 Free Software Foundation, Inc.
5 This file is part of the GNU opcodes library.
7 This library is free software; you can redistribute it and/or modify
8 it under the terms of the GNU General Public License as published by
9 the Free Software Foundation; either version 3, or (at your option)
12 It is distributed in the hope that it will be useful, but WITHOUT
13 ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
14 or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public
15 License for more details.
17 You should have received a copy of the GNU General Public License
18 along with this program; if not, write to the Free Software
19 Foundation, Inc., 51 Franklin Street - Fifth Floor, Boston,
20 MA 02110-1301, USA. */
31 static fprintf_ftype fpr;
33 static struct disassemble_info *local_info;
36 print_operand (int lookup, char *format, int *args)
43 switch (c = *format++)
46 val = args[(*format++) - '0'];
48 local_info->print_address_func (val, local_info);
50 fpr (stream, "0x%x", val);
54 fpr (stream, "%c", c);
61 print_insn_w65 (bfd_vma memaddr, struct disassemble_info *info)
64 unsigned char insn[4];
65 const struct opinfo *op;
71 stream = info->stream;
72 fpr = info->fprintf_func;
75 for (i = 0; i < 4 && status == 0; i++)
76 status = info->read_memory_func (memaddr + i, insn + i, 1, info);
78 for (op = optable; op->val != insn[0]; op++)
81 fpr (stream, "%s", op->name);
83 /* Prepare all the posible operand values. */
86 int asR_W65_ABS8 = insn[1];
87 int asR_W65_ABS16 = (insn[2] << 8) + asR_W65_ABS8;
88 int asR_W65_ABS24 = (insn[3] << 16) + asR_W65_ABS16;
89 int asR_W65_PCR8 = ((char) (asR_W65_ABS8)) + memaddr + 2;
90 int asR_W65_PCR16 = ((short) (asR_W65_ABS16)) + memaddr + 3;