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annotate lwasm/main.c @ 213:c40960370fd8
Added autogen.sh
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date | Fri, 24 Apr 2009 21:42:06 +0000 |
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0 | 1 /* |
2 main.c | |
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3 Copyright © 2008 William Astle |
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4 |
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5 This file is part of LWASM. |
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6 |
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7 LWASM is free software: you can redistribute it and/or modify it under the |
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8 terms of the GNU General Public License as published by the Free Software |
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9 Foundation, either version 3 of the License, or (at your option) any later |
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10 version. |
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11 |
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12 This program is distributed in the hope that it will be useful, but WITHOUT |
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13 ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or |
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14 FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for |
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15 more details. |
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16 |
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17 You should have received a copy of the GNU General Public License along with |
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18 this program. If not, see <http://www.gnu.org/licenses/>. |
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19 |
0 | 20 |
21 Implements the program startup code | |
22 | |
23 */ | |
24 | |
212 | 25 #include <config.h> |
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26 |
0 | 27 #include <argp.h> |
28 #include <errno.h> | |
29 #include <stdio.h> | |
30 #include <stdlib.h> | |
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31 #include <unistd.h> |
0 | 32 |
33 #include "lwasm.h" | |
34 | |
35 // external declarations | |
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36 extern void lwasm_pass1(asmstate_t *as); |
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37 extern void lwasm_pass2(asmstate_t *as); |
35
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38 extern void lwasm_list(asmstate_t *as); |
46 | 39 extern void lwasm_output(asmstate_t *as); |
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40 extern void pseudo_pragma_real(asmstate_t *as, lwasm_line_t *cl, char **optr, int error); |
0 | 41 |
42 // command line option handling | |
142 | 43 const char *argp_program_version = "LWASM from " PACKAGE_STRING; |
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44 const char *argp_program_bug_address = PACKAGE_BUGREPORT; |
0 | 45 |
46 static error_t parse_opts(int key, char *arg, struct argp_state *state) | |
47 { | |
48 asmstate_t *as = state -> input; | |
143
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49 char *p; |
0 | 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 | |
38 | 63 debug_level++; |
0 | 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; | |
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83 |
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84 case 0x100: |
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85 // proprietary object format |
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86 as -> outformat = OUTPUT_OBJ; |
19 | 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 | |
98 { | |
99 fprintf(stderr, "Invalid output format: %s\n", arg); | |
100 exit(1); | |
101 } | |
102 break; | |
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103 |
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104 case 'p': |
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105 // pragmas |
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106 p = arg; |
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107 pseudo_pragma_real(as, NULL, &p, 2); |
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108 if (!p) |
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109 { |
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110 fprintf(stderr, "Invalid pragma string: %s\n", arg); |
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111 exit(1); |
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112 } |
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113 break; |
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114 |
0 | 115 case ARGP_KEY_END: |
116 // done; sanity check | |
117 if (!as -> outfile) | |
118 as -> outfile = "a.out"; | |
119 break; | |
120 | |
121 case ARGP_KEY_ARG: | |
122 // non-option arg | |
123 if (as -> infile) | |
124 argp_usage(state); | |
125 as -> infile = arg; | |
126 break; | |
127 | |
128 default: | |
129 return ARGP_ERR_UNKNOWN; | |
130 } | |
131 return 0; | |
132 } | |
133 | |
134 static struct argp_option options[] = | |
135 { | |
136 { "output", 'o', "FILE", 0, | |
137 "Output to FILE"}, | |
138 { "debug", 'd', 0, 0, | |
139 "Set debug mode"}, | |
19 | 140 { "format", 'f', "TYPE", 0, |
141 "Select output format: decb, raw, obj"}, | |
0 | 142 { "list", 'l', "FILE", OPTION_ARG_OPTIONAL, |
143 "Generate list [to FILE]"}, | |
144 { "decb", 'b', 0, 0, | |
19 | 145 "Generate DECB .bin format output, equivalent of --format=decb"}, |
0 | 146 { "raw", 'r', 0, 0, |
19 | 147 "Generate raw binary format output, equivalent of --format=raw"}, |
74 | 148 { "obj", 0x100, 0, 0, |
19 | 149 "Generate proprietary object file format for later linking, equivalent of --format=obj" }, |
143
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150 { "pragma", 'p', "PRAGMA", 0, |
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151 "Set an assembler pragma to any value understood by the \"pragma\" pseudo op"}, |
0 | 152 { 0 } |
153 }; | |
154 | |
155 static struct argp argp = | |
156 { | |
157 options, | |
158 parse_opts, | |
159 "<input file>", | |
160 "LWASM, a HD6309 and MC6809 cross-assembler" | |
161 }; | |
162 | |
212 | 163 char *program_name; |
164 | |
0 | 165 // main function; parse command line, set up assembler state, and run the |
166 // assembler on the first file | |
167 int main(int argc, char **argv) | |
168 { | |
212 | 169 |
170 program_name = argv[0]; | |
171 | |
0 | 172 // assembler state |
173 asmstate_t asmstate = { 0 }; | |
174 | |
175 argp_parse(&argp, argc, argv, 0, 0, &asmstate); | |
176 | |
19 | 177 if (!asmstate.infile) |
178 { | |
179 fprintf(stderr, "No input files specified.\n"); | |
180 exit(1); | |
181 } | |
182 | |
182
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183 // lose the output file if it already exists... |
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184 unlink(asmstate.outfile); |
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185 |
0 | 186 /* pass 1 - collect the symbols and assign addresses where possible */ |
187 /* pass 1 also resolves included files, etc. */ | |
188 /* that means files are read exactly once unless included multiple times */ | |
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189 lwasm_pass1(&asmstate); |
0 | 190 |
191 // pass 2: actually generate the code; if any phasing errors appear | |
192 // at this stage, we have a bug | |
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193 lwasm_pass2(&asmstate); |
0 | 194 |
195 // now make a pretty listing | |
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196 lwasm_list(&asmstate); |
0 | 197 |
198 // now write the code out to the output file | |
46 | 199 lwasm_output(&asmstate); |
0 | 200 |
201 if (asmstate.errorcount > 0) | |
202 exit(1); | |
203 | |
204 exit(0); | |
205 } | |
206 |