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Prepare for migration to hg
author lost
date Fri, 19 Mar 2010 02:54:14 +0000
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338:e7885b3ee266 339:eb230fa7d28e
1 /*
2 main.c
3 Copyright © 2008 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 Implements the program startup code
22
23 */
24
25 #include <config.h>
26
27 #include <argp.h>
28 #include <errno.h>
29 #include <stdio.h>
30 #include <stdlib.h>
31 #include <unistd.h>
32
33 #include "lwasm.h"
34
35 // external declarations
36 extern void lwasm_pass1(asmstate_t *as);
37 extern void lwasm_pass2(asmstate_t *as);
38 extern void lwasm_list(asmstate_t *as);
39 extern void lwasm_output(asmstate_t *as);
40 extern void pseudo_pragma_real(asmstate_t *as, lwasm_line_t *cl, char **optr, int error);
41
42 // command line option handling
43 const char *argp_program_version = "LWASM from " PACKAGE_STRING;
44 const char *argp_program_bug_address = PACKAGE_BUGREPORT;
45
46 static error_t parse_opts(int key, char *arg, struct argp_state *state)
47 {
48 asmstate_t *as = state -> input;
49 char *p;
50
51 switch (key)
52 {
53 case 'o':
54 // output
55 if (as -> outfile)
56 {
57 }
58 as -> outfile = arg;
59 break;
60
61 case 'd':
62 // debug
63 debug_level++;
64 break;
65
66 case 'l':
67 // list
68 if (arg)
69 as -> listfile = arg;
70 else
71 as -> listfile = "-";
72 break;
73
74 case 'b':
75 // decb output
76 as -> outformat = OUTPUT_DECB;
77 break;
78
79 case 'r':
80 // raw binary output
81 as -> outformat = OUTPUT_RAW;
82 break;
83
84 case 0x100:
85 // proprietary object format
86 as -> outformat = OUTPUT_OBJ;
87 break;
88
89 case 'f':
90 // output format
91 if (!strcasecmp(arg, "decb"))
92 as -> outformat = OUTPUT_DECB;
93 else if (!strcasecmp(arg, "raw"))
94 as -> outformat = OUTPUT_RAW;
95 else if (!strcasecmp(arg, "obj"))
96 as -> outformat = OUTPUT_OBJ;
97 else if (!strcasecmp(arg, "os9"))
98 {
99 as -> pragmas |= PRAGMA_DOLLARNOTLOCAL;
100 as -> outformat = OUTPUT_OS9;
101 }
102 else
103 {
104 fprintf(stderr, "Invalid output format: %s\n", arg);
105 exit(1);
106 }
107 break;
108
109 case 'p':
110 // pragmas
111 p = arg;
112 pseudo_pragma_real(as, NULL, &p, 2);
113 if (!p)
114 {
115 fprintf(stderr, "Invalid pragma string: %s\n", arg);
116 exit(1);
117 }
118 break;
119
120 case '9':
121 as -> no6309 = 1;
122 break;
123
124 case '3':
125 as -> no6309 = 0;
126 break;
127
128 case ARGP_KEY_END:
129 // done; sanity check
130 if (!as -> outfile)
131 as -> outfile = "a.out";
132 break;
133
134 case ARGP_KEY_ARG:
135 // non-option arg
136 if (as -> infile)
137 argp_usage(state);
138 as -> infile = arg;
139 break;
140
141 default:
142 return ARGP_ERR_UNKNOWN;
143 }
144 return 0;
145 }
146
147 static struct argp_option options[] =
148 {
149 { "output", 'o', "FILE", 0,
150 "Output to FILE"},
151 { "debug", 'd', 0, 0,
152 "Set debug mode"},
153 { "format", 'f', "TYPE", 0,
154 "Select output format: decb, raw, obj, os9"},
155 { "list", 'l', "FILE", OPTION_ARG_OPTIONAL,
156 "Generate list [to FILE]"},
157 { "decb", 'b', 0, 0,
158 "Generate DECB .bin format output, equivalent of --format=decb"},
159 { "raw", 'r', 0, 0,
160 "Generate raw binary format output, equivalent of --format=raw"},
161 { "obj", 0x100, 0, 0,
162 "Generate proprietary object file format for later linking, equivalent of --format=obj" },
163 { "pragma", 'p', "PRAGMA", 0,
164 "Set an assembler pragma to any value understood by the \"pragma\" pseudo op"},
165 { "6809", '9', 0, 0,
166 "Set assembler to 6809 only mode" },
167 { "6309", '3', 0, 0,
168 "Set assembler to 6309 mode (default)" },
169 { 0 }
170 };
171
172 static struct argp argp =
173 {
174 options,
175 parse_opts,
176 "<input file>",
177 "LWASM, a HD6309 and MC6809 cross-assembler"
178 };
179
180 char *program_name;
181
182 // main function; parse command line, set up assembler state, and run the
183 // assembler on the first file
184 int main(int argc, char **argv)
185 {
186
187 program_name = argv[0];
188
189 // assembler state
190 asmstate_t asmstate = { 0 };
191
192 argp_parse(&argp, argc, argv, 0, 0, &asmstate);
193
194 if (!asmstate.infile)
195 {
196 fprintf(stderr, "No input files specified.\n");
197 exit(1);
198 }
199
200 // lose the output file if it already exists...
201 unlink(asmstate.outfile);
202
203 /* pass 1 - collect the symbols and assign addresses where possible */
204 /* pass 1 also resolves included files, etc. */
205 /* that means files are read exactly once unless included multiple times */
206 lwasm_pass1(&asmstate);
207
208 // pass 2: actually generate the code; if any phasing errors appear
209 // at this stage, we have a bug
210 lwasm_pass2(&asmstate);
211
212 // now make a pretty listing
213 lwasm_list(&asmstate);
214
215 // now write the code out to the output file
216 lwasm_output(&asmstate);
217
218 if (asmstate.errorcount > 0)
219 exit(1);
220
221 exit(0);
222 }
223