|
34
|
1 /*
|
|
|
2 insn_logicmem.c
|
|
|
3 Copyright © 2009 William Astle
|
|
|
4
|
|
|
5 This file is part of LWASM.
|
|
|
6
|
|
|
7 LWASM is free software: you can redistribute it and/or modify it under the
|
|
|
8 terms of the GNU General Public License as published by the Free Software
|
|
|
9 Foundation, either version 3 of the License, or (at your option) any later
|
|
|
10 version.
|
|
|
11
|
|
|
12 This program is distributed in the hope that it will be useful, but WITHOUT
|
|
|
13 ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
|
|
|
14 FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
|
|
|
15 more details.
|
|
|
16
|
|
|
17 You should have received a copy of the GNU General Public License along with
|
|
|
18 this program. If not, see <http://www.gnu.org/licenses/>.
|
|
|
19
|
|
|
20 Contains code for handling logic/mem instructions
|
|
|
21 */
|
|
|
22
|
|
|
23 #include <ctype.h>
|
|
|
24 #include <stdio.h>
|
|
|
25 #include <string.h>
|
|
|
26
|
|
|
27 #include "lwasm.h"
|
|
|
28 #include "instab.h"
|
|
|
29 #include "expr.h"
|
|
|
30
|
|
|
31 extern void insn_gen_aux(asmstate_t *as, lwasm_line_t *l, char **optr, int opnum, int extra);
|
|
|
32
|
|
|
33 // for aim, oim, eim, tim
|
|
|
34 OPFUNC(insn_logicmem)
|
|
|
35 {
|
|
|
36 int rval, v1;
|
|
|
37 const char *p2;
|
|
|
38 lwasm_expr_stack_t *s;
|
|
|
39
|
|
|
40 if (**p == '#')
|
|
|
41 (*p)++;
|
|
|
42
|
|
|
43 s = lwasm_expr_eval(*p, &p2);
|
|
|
44 *p = (char *)p2;
|
|
|
45
|
|
|
46 if (!s)
|
|
|
47 {
|
|
|
48 register_error(as, l, 1, "Bad expression");
|
|
|
49 return;
|
|
|
50 }
|
|
|
51
|
|
|
52 if (v1 < -128 || v1 > 255)
|
|
|
53 {
|
|
|
54 register_error(as, l, 2, "Byte overflow");
|
|
|
55 v1 &= 0xff;
|
|
|
56 }
|
|
|
57
|
|
|
58 if (**p != ',' && **p != ';')
|
|
|
59 {
|
|
|
60 register_error(as, l, 1, "Bad operand");
|
|
|
61 return;
|
|
|
62 }
|
|
|
63
|
|
|
64 (*p)++;
|
|
|
65
|
|
|
66 // now we have a general addressing mode - call for it
|
|
|
67 insn_gen_aux(as, l, p, opnum, v1 & 0xff);
|
|
|
68 }
|
