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annotate src/main.c @ 109:f21a5593a661
Updated docs
| author | lost |
|---|---|
| date | Wed, 28 Jan 2009 05:38:21 +0000 |
| parents | dbf1b926c2f1 |
| children | 36ca3fa755e0 |
| rev | line source |
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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 | |
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25 #ifdef HAVE_CONFIG_H |
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26 #include "config.h" |
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27 #endif |
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28 |
| 0 | 29 #include <argp.h> |
| 30 #include <errno.h> | |
| 31 #include <stdio.h> | |
| 32 #include <stdlib.h> | |
| 33 | |
| 34 #include "lwasm.h" | |
| 35 | |
| 36 // external declarations | |
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37 extern void lwasm_pass1(asmstate_t *as); |
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38 extern void lwasm_pass2(asmstate_t *as); |
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39 extern void lwasm_list(asmstate_t *as); |
| 46 | 40 extern void lwasm_output(asmstate_t *as); |
| 0 | 41 |
| 42 // command line option handling | |
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43 const char *argp_program_version = 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; | |
| 49 | |
| 50 switch (key) | |
| 51 { | |
| 52 case 'o': | |
| 53 // output | |
| 54 if (as -> outfile) | |
| 55 { | |
| 56 } | |
| 57 as -> outfile = arg; | |
| 58 break; | |
| 59 | |
| 60 case 'd': | |
| 61 // debug | |
| 38 | 62 debug_level++; |
| 0 | 63 break; |
| 64 | |
| 65 case 'l': | |
| 66 // list | |
| 67 if (arg) | |
| 68 as -> listfile = arg; | |
| 69 else | |
| 70 as -> listfile = "-"; | |
| 71 break; | |
| 72 | |
| 73 case 'b': | |
| 74 // decb output | |
| 75 as -> outformat = OUTPUT_DECB; | |
| 76 break; | |
| 77 | |
| 78 case 'r': | |
| 79 // raw binary output | |
| 80 as -> outformat = OUTPUT_RAW; | |
| 81 break; | |
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82 |
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83 case 0x100: |
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84 // proprietary object format |
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85 as -> outformat = OUTPUT_OBJ; |
| 19 | 86 break; |
| 87 | |
| 88 case 'f': | |
| 89 // output format | |
| 90 if (!strcasecmp(arg, "decb")) | |
| 91 as -> outformat = OUTPUT_DECB; | |
| 92 else if (!strcasecmp(arg, "raw")) | |
| 93 as -> outformat = OUTPUT_RAW; | |
| 94 else if (!strcasecmp(arg, "obj")) | |
| 95 as -> outformat = OUTPUT_OBJ; | |
| 96 else | |
| 97 { | |
| 98 fprintf(stderr, "Invalid output format: %s\n", arg); | |
| 99 exit(1); | |
| 100 } | |
| 101 break; | |
| 0 | 102 case ARGP_KEY_END: |
| 103 // done; sanity check | |
| 104 if (!as -> outfile) | |
| 105 as -> outfile = "a.out"; | |
| 106 break; | |
| 107 | |
| 108 case ARGP_KEY_ARG: | |
| 109 // non-option arg | |
| 110 if (as -> infile) | |
| 111 argp_usage(state); | |
| 112 as -> infile = arg; | |
| 113 break; | |
| 114 | |
| 115 default: | |
| 116 return ARGP_ERR_UNKNOWN; | |
| 117 } | |
| 118 return 0; | |
| 119 } | |
| 120 | |
| 121 static struct argp_option options[] = | |
| 122 { | |
| 123 { "output", 'o', "FILE", 0, | |
| 124 "Output to FILE"}, | |
| 125 { "debug", 'd', 0, 0, | |
| 126 "Set debug mode"}, | |
| 19 | 127 { "format", 'f', "TYPE", 0, |
| 128 "Select output format: decb, raw, obj"}, | |
| 0 | 129 { "list", 'l', "FILE", OPTION_ARG_OPTIONAL, |
| 130 "Generate list [to FILE]"}, | |
| 131 { "decb", 'b', 0, 0, | |
| 19 | 132 "Generate DECB .bin format output, equivalent of --format=decb"}, |
| 0 | 133 { "raw", 'r', 0, 0, |
| 19 | 134 "Generate raw binary format output, equivalent of --format=raw"}, |
| 74 | 135 { "obj", 0x100, 0, 0, |
| 19 | 136 "Generate proprietary object file format for later linking, equivalent of --format=obj" }, |
| 0 | 137 { 0 } |
| 138 }; | |
| 139 | |
| 140 static struct argp argp = | |
| 141 { | |
| 142 options, | |
| 143 parse_opts, | |
| 144 "<input file>", | |
| 145 "LWASM, a HD6309 and MC6809 cross-assembler" | |
| 146 }; | |
| 147 | |
| 148 // main function; parse command line, set up assembler state, and run the | |
| 149 // assembler on the first file | |
| 150 int main(int argc, char **argv) | |
| 151 { | |
| 152 // assembler state | |
| 153 asmstate_t asmstate = { 0 }; | |
| 154 | |
| 155 argp_parse(&argp, argc, argv, 0, 0, &asmstate); | |
| 156 | |
| 19 | 157 if (!asmstate.infile) |
| 158 { | |
| 159 fprintf(stderr, "No input files specified.\n"); | |
| 160 exit(1); | |
| 161 } | |
| 162 | |
| 0 | 163 /* pass 1 - collect the symbols and assign addresses where possible */ |
| 164 /* pass 1 also resolves included files, etc. */ | |
| 165 /* that means files are read exactly once unless included multiple times */ | |
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166 lwasm_pass1(&asmstate); |
| 0 | 167 |
| 168 // pass 2: actually generate the code; if any phasing errors appear | |
| 169 // at this stage, we have a bug | |
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170 lwasm_pass2(&asmstate); |
| 0 | 171 |
| 172 // now make a pretty listing | |
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173 lwasm_list(&asmstate); |
| 0 | 174 |
| 175 // now write the code out to the output file | |
| 46 | 176 lwasm_output(&asmstate); |
| 0 | 177 |
| 178 if (asmstate.errorcount > 0) | |
| 179 exit(1); | |
| 180 | |
| 181 exit(0); | |
| 182 } | |
| 183 |