1 /* Disassemble WDC 65816 instructions.
2 Copyright 1995, 1998, 2000, 2001, 2002, 2005
3 Free Software Foundation, Inc.
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.
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.
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
17 Foundation, Inc., 51 Franklin Street - Fifth Floor, Boston,
18 MA 02110-1301, USA. */
28 static fprintf_ftype fpr;
30 static struct disassemble_info *local_info;
33 print_operand (int lookup, char *format, int *args)
40 switch (c = *format++)
43 val = args[(*format++) - '0'];
45 local_info->print_address_func (val, local_info);
47 fpr (stream, "0x%x", val);
51 fpr (stream, "%c", c);
58 print_insn_w65 (bfd_vma memaddr, struct disassemble_info *info)
61 unsigned char insn[4];
62 const struct opinfo *op;
68 stream = info->stream;
69 fpr = info->fprintf_func;
72 for (i = 0; i < 4 && status == 0; i++)
73 status = info->read_memory_func (memaddr + i, insn + i, 1, info);
75 for (op = optable; op->val != insn[0]; op++)
78 fpr (stream, "%s", op->name);
80 /* Prepare all the posible operand values. */
83 int asR_W65_ABS8 = insn[1];
84 int asR_W65_ABS16 = (insn[2] << 8) + asR_W65_ABS8;
85 int asR_W65_ABS24 = (insn[3] << 16) + asR_W65_ABS16;
86 int asR_W65_PCR8 = ((char) (asR_W65_ABS8)) + memaddr + 2;
87 int asR_W65_PCR16 = ((short) (asR_W65_ABS16)) + memaddr + 3;