Mercurial > hg > index.cgi

comparison lwasm/insn_rtor.c @ 0:2c24602be78f

Find changesets by keywords (author, files, the commit message), revision number or hash, or revset expression.
Initial import from lwtools 3.0.1 version, with new hand built build system and file reorganization
author lost@l-w.ca
date Wed, 19 Jan 2011 22:27:17 -0700
parents
children 3a5f718b24c1
comparison
equal deleted inserted replaced
-1:000000000000 0:2c24602be78f
1 /*
2 insn_rtor.c
3 Copyright © 2010 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 */
21
22 #include "lwasm.h"
23 #include "instab.h"
24
25 PARSEFUNC(insn_parse_rtor)
26 {
27 int r0, r1;
28
29 static const char *regs = "D X Y U S PCW V A B CCDP0 0 E F ";
30 static const char *regs9 = "D X Y U S PC A B CCDP ";
31
32 // register to register (r0,r1)
33 // registers are in order:
34 // D,X,Y,U,S,PC,W,V
35 // A,B,CC,DP,0,0,E,F
36
37 r0 = lwasm_lookupreg2((as -> target == TARGET_6309) ? regs9 : regs, p);
38 if (r0 < 0 || *(*p)++ != ',')
39 {
40 lwasm_register_error(as, l, "Bad operand");
41 r0 = r1 = 0;
42 }
43 else
44 {
45 r1 = lwasm_lookupreg2((as -> target = TARGET_6309) ? regs9 : regs, p);
46 if (r1 < 0)
47 {
48 lwasm_register_error(as, l, "Bad operand");
49 r0 = r1 = 0;
50 }
51 }
52 l -> pb = (r0 << 4) | r1;
53 l -> len = OPLEN(instab[l -> insn].ops[0]) + 1;
54 }
55
56 EMITFUNC(insn_emit_rtor)
57 {
58 lwasm_emitop(l, instab[l -> insn].ops[0]);
59 lwasm_emit(l, l -> pb);
60 }