1 /* Disassemble WDC 65816 instructions.
2 Copyright 1995, 1998, 2000 Free Software Foundation, Inc.
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.
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.
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. */
26 static fprintf_ftype fpr
;
28 static struct disassemble_info
*local_info
;
30 static char *lname
[] = { "r0","r1","r2","r3","r4","r5","r6","r7","s0" };
36 if (val
>= 0x10 && val
<= 0x20)
37 return lname
[(val
- 0x10) / 2];
42 print_operand (lookup
, format
, args
)
52 switch (c
= *format
++)
55 val
= args
[(*format
++) - '0'];
59 name
= findname (val
);
61 fpr (stream
, "%s", name
);
64 local_info
->print_address_func (val
, local_info
);
67 fpr (stream
, "0x%x", val
);
71 fpr (stream
, "%c", c
);
78 print_insn_w65 (memaddr
, info
)
80 struct disassemble_info
*info
;
83 unsigned char insn
[4];
84 register struct opinfo
*op
;
89 stream
= info
->stream
;
90 fpr
= info
->fprintf_func
;
92 for (i
= 0; i
< 4 && status
== 0; i
++)
94 status
= info
->read_memory_func (memaddr
+ i
, insn
+ i
, 1, info
);
97 for (op
= optable
; op
->val
!= insn
[0]; op
++)
100 fpr (stream
, "%s", op
->name
);
102 /* Prepare all the posible operand values. */
105 int asR_W65_ABS8
= insn
[1];
106 int asR_W65_ABS16
= (insn
[2] << 8) + asR_W65_ABS8
;
107 int asR_W65_ABS24
= (insn
[3] << 16) + asR_W65_ABS16
;
108 int asR_W65_PCR8
= ((char) (asR_W65_ABS8
)) + memaddr
+ 2;
109 int asR_W65_PCR16
= ((short) (asR_W65_ABS16
)) + memaddr
+ 3;
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