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annotate src/main.c @ 13:05d4115b4860
Started work on new expression evaluator system and major code re-work for next release
| author | lost |
|---|---|
| date | Wed, 22 Oct 2008 04:51:16 +0000 |
| parents | 287a6905a63c |
| children | 925105ccf22f |
| 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); |
| 0 | 39 |
| 40 | |
| 41 // command line option handling | |
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42 const char *argp_program_version = PACKAGE_STRING; |
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43 const char *argp_program_bug_address = PACKAGE_BUGREPORT; |
| 0 | 44 |
| 45 static error_t parse_opts(int key, char *arg, struct argp_state *state) | |
| 46 { | |
| 47 asmstate_t *as = state -> input; | |
| 48 | |
| 49 switch (key) | |
| 50 { | |
| 51 case 'o': | |
| 52 // output | |
| 53 if (as -> outfile) | |
| 54 { | |
| 55 } | |
| 56 as -> outfile = arg; | |
| 57 break; | |
| 58 | |
| 59 case 'd': | |
| 60 // debug | |
| 61 as -> debug++; | |
| 62 break; | |
| 63 | |
| 64 case 'l': | |
| 65 // list | |
| 66 if (arg) | |
| 67 as -> listfile = arg; | |
| 68 else | |
| 69 as -> listfile = "-"; | |
| 70 break; | |
| 71 | |
| 72 case 'b': | |
| 73 // decb output | |
| 74 as -> outformat = OUTPUT_DECB; | |
| 75 break; | |
| 76 | |
| 77 case 'r': | |
| 78 // raw binary output | |
| 79 as -> outformat = OUTPUT_RAW; | |
| 80 break; | |
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81 |
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82 case 0x100: |
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83 // proprietary object format |
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84 as -> outformat = OUTPUT_OBJ; |
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85 |
| 0 | 86 case ARGP_KEY_END: |
| 87 // done; sanity check | |
| 88 if (!as -> outfile) | |
| 89 as -> outfile = "a.out"; | |
| 90 break; | |
| 91 | |
| 92 case ARGP_KEY_ARG: | |
| 93 // non-option arg | |
| 94 if (as -> infile) | |
| 95 argp_usage(state); | |
| 96 as -> infile = arg; | |
| 97 break; | |
| 98 | |
| 99 default: | |
| 100 return ARGP_ERR_UNKNOWN; | |
| 101 } | |
| 102 return 0; | |
| 103 } | |
| 104 | |
| 105 static struct argp_option options[] = | |
| 106 { | |
| 107 { "output", 'o', "FILE", 0, | |
| 108 "Output to FILE"}, | |
| 109 { "debug", 'd', 0, 0, | |
| 110 "Set debug mode"}, | |
| 111 { "list", 'l', "FILE", OPTION_ARG_OPTIONAL, | |
| 112 "Generate list [to FILE]"}, | |
| 113 { "decb", 'b', 0, 0, | |
| 114 "Generate DECB .bin format output"}, | |
| 115 { "raw", 'r', 0, 0, | |
| 116 "Generate raw binary format output"}, | |
| 117 { "rawrel", 0, 0, 0, | |
| 118 "Generate raw binary respecing ORG statements as offsets from the start of the file"}, | |
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119 { "obj", 0, 0, 0, |
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120 "Generate proprietary object file format for later linking" }, |
| 0 | 121 { 0 } |
| 122 }; | |
| 123 | |
| 124 static struct argp argp = | |
| 125 { | |
| 126 options, | |
| 127 parse_opts, | |
| 128 "<input file>", | |
| 129 "LWASM, a HD6309 and MC6809 cross-assembler" | |
| 130 }; | |
| 131 | |
| 132 // main function; parse command line, set up assembler state, and run the | |
| 133 // assembler on the first file | |
| 134 int main(int argc, char **argv) | |
| 135 { | |
| 136 // assembler state | |
| 137 asmstate_t asmstate = { 0 }; | |
| 138 | |
| 139 argp_parse(&argp, argc, argv, 0, 0, &asmstate); | |
| 140 if (!asmstate.listfile) | |
| 141 asmstate.listfile = "-"; | |
| 142 | |
| 143 /* pass 1 - collect the symbols and assign addresses where possible */ | |
| 144 /* pass 1 also resolves included files, etc. */ | |
| 145 /* that means files are read exactly once unless included multiple times */ | |
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146 lwasm_pass1(&asmstate); |
| 0 | 147 |
| 148 // pass 2: actually generate the code; if any phasing errors appear | |
| 149 // at this stage, we have a bug | |
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150 lwasm_pass2(&asmstate); |
| 0 | 151 |
| 152 // now make a pretty listing | |
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153 // lwasm_list(&asmstate); |
| 0 | 154 |
| 155 // now write the code out to the output file | |
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156 // lwasm_output(&asmstate); |
| 0 | 157 |
| 158 if (asmstate.errorcount > 0) | |
| 159 exit(1); | |
| 160 | |
| 161 exit(0); | |
| 162 } | |
| 163 |