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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 697bc543368c
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-1:000000000000 0:2c24602be78f
1 /*
2 pass3.c
3
4 Copyright © 2010 William Astle
5
6 This file is part of LWTOOLS.
7
8 LWTOOLS is free software: you can redistribute it and/or modify it under the
9 terms of the GNU General Public License as published by the Free Software
10 Foundation, either version 3 of the License, or (at your option) any later
11 version.
12
13 This program is distributed in the hope that it will be useful, but WITHOUT
14 ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
15 FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
16 more details.
17
18 You should have received a copy of the GNU General Public License along with
19 this program. If not, see <http://www.gnu.org/licenses/>.
20 */
21
22 #include <stdio.h>
23 #include <string.h>
24
25 #include <lw_alloc.h>
26 #include <lw_string.h>
27
28 #include "lwasm.h"
29 #include "instab.h"
30
31 /*
32 Resolve1 Pass
33
34 repeatedly resolve instruction sizes and line addresses
35 until nothing more reduces
36
37 */
38 void do_pass3(asmstate_t *as)
39 {
40 int rc;
41 line_t *cl;
42 struct line_expr_s *le;
43
44 do
45 {
46 rc = 0;
47 for (cl = as -> line_head; cl; cl = cl -> next)
48 {
49 as -> cl = cl;
50
51 // simplify address
52 lwasm_reduce_expr(as, cl -> addr);
53
54 // simplify each expression
55 for (le = cl -> exprs; le; le = le -> next)
56 lwasm_reduce_expr(as, le -> expr);
57
58 if (cl -> len == -1)
59 {
60 // try resolving the instruction length
61 // but don't force resolution
62 if (cl -> insn >= 0 && instab[cl -> insn].resolve)
63 {
64 (instab[cl -> insn].resolve)(as, cl, 0);
65 if (cl -> len != -1)
66 rc++;
67 }
68 }
69 }
70 if (as -> errorcount > 0)
71 return;
72 } while (rc > 0);
73 }