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annotate lwasm/main.c @ 257:e27279180a73 2.x
Added support for include path to LWASM
| author | lost |
|---|---|
| date | Tue, 22 Dec 2009 04:53:20 +0000 |
| parents | a58f49a77441 |
| children | c79b3c88adbc |
| 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 | |
| 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" | |
| 257 | 34 #include "util.h" |
| 0 | 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); |
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41 extern void pseudo_pragma_real(asmstate_t *as, lwasm_line_t *cl, char **optr, int error); |
| 0 | 42 |
| 43 // command line option handling | |
| 142 | 44 const char *argp_program_version = "LWASM from " PACKAGE_STRING; |
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45 const char *argp_program_bug_address = PACKAGE_BUGREPORT; |
| 0 | 46 |
| 47 static error_t parse_opts(int key, char *arg, struct argp_state *state) | |
| 48 { | |
| 49 asmstate_t *as = state -> input; | |
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50 char *p; |
| 0 | 51 |
| 52 switch (key) | |
| 53 { | |
| 257 | 54 case 'I': |
| 55 as -> includedirs = lwasm_realloc(as -> includedirs, (as -> nincludedirs + 1) * sizeof(char *)); | |
| 56 as -> includedirs[as -> nincludedirs++] = arg; | |
| 57 break; | |
| 58 | |
| 0 | 59 case 'o': |
| 60 // output | |
| 61 if (as -> outfile) | |
| 62 { | |
| 63 } | |
| 64 as -> outfile = arg; | |
| 65 break; | |
| 66 | |
| 67 case 'd': | |
| 68 // debug | |
| 38 | 69 debug_level++; |
| 0 | 70 break; |
| 71 | |
| 72 case 'l': | |
| 73 // list | |
| 74 if (arg) | |
| 75 as -> listfile = arg; | |
| 76 else | |
| 77 as -> listfile = "-"; | |
| 78 break; | |
| 79 | |
| 80 case 'b': | |
| 81 // decb output | |
| 82 as -> outformat = OUTPUT_DECB; | |
| 83 break; | |
| 84 | |
| 85 case 'r': | |
| 86 // raw binary output | |
| 87 as -> outformat = OUTPUT_RAW; | |
| 88 break; | |
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89 |
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90 case 0x100: |
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91 // proprietary object format |
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92 as -> outformat = OUTPUT_OBJ; |
| 19 | 93 break; |
| 94 | |
| 95 case 'f': | |
| 96 // output format | |
| 97 if (!strcasecmp(arg, "decb")) | |
| 98 as -> outformat = OUTPUT_DECB; | |
| 99 else if (!strcasecmp(arg, "raw")) | |
| 100 as -> outformat = OUTPUT_RAW; | |
| 101 else if (!strcasecmp(arg, "obj")) | |
| 102 as -> outformat = OUTPUT_OBJ; | |
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103 else if (!strcasecmp(arg, "os9")) |
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104 { |
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105 as -> pragmas |= PRAGMA_DOLLARNOTLOCAL; |
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106 as -> outformat = OUTPUT_OS9; |
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107 } |
| 19 | 108 else |
| 109 { | |
| 110 fprintf(stderr, "Invalid output format: %s\n", arg); | |
| 111 exit(1); | |
| 112 } | |
| 113 break; | |
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114 |
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115 case 'p': |
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116 // pragmas |
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117 p = arg; |
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118 pseudo_pragma_real(as, NULL, &p, 2); |
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119 if (!p) |
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120 { |
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121 fprintf(stderr, "Invalid pragma string: %s\n", arg); |
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122 exit(1); |
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123 } |
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124 break; |
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125 |
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126 case '9': |
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127 as -> no6309 = 1; |
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128 break; |
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129 |
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130 case '3': |
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131 as -> no6309 = 0; |
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132 break; |
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133 |
| 0 | 134 case ARGP_KEY_END: |
| 135 // done; sanity check | |
| 136 if (!as -> outfile) | |
| 137 as -> outfile = "a.out"; | |
| 138 break; | |
| 139 | |
| 140 case ARGP_KEY_ARG: | |
| 141 // non-option arg | |
| 142 if (as -> infile) | |
| 143 argp_usage(state); | |
| 144 as -> infile = arg; | |
| 145 break; | |
| 146 | |
| 147 default: | |
| 148 return ARGP_ERR_UNKNOWN; | |
| 149 } | |
| 150 return 0; | |
| 151 } | |
| 152 | |
| 153 static struct argp_option options[] = | |
| 154 { | |
| 155 { "output", 'o', "FILE", 0, | |
| 156 "Output to FILE"}, | |
| 157 { "debug", 'd', 0, 0, | |
| 158 "Set debug mode"}, | |
| 19 | 159 { "format", 'f', "TYPE", 0, |
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160 "Select output format: decb, raw, obj, os9"}, |
| 0 | 161 { "list", 'l', "FILE", OPTION_ARG_OPTIONAL, |
| 162 "Generate list [to FILE]"}, | |
| 163 { "decb", 'b', 0, 0, | |
| 19 | 164 "Generate DECB .bin format output, equivalent of --format=decb"}, |
| 0 | 165 { "raw", 'r', 0, 0, |
| 19 | 166 "Generate raw binary format output, equivalent of --format=raw"}, |
| 74 | 167 { "obj", 0x100, 0, 0, |
| 19 | 168 "Generate proprietary object file format for later linking, equivalent of --format=obj" }, |
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169 { "pragma", 'p', "PRAGMA", 0, |
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170 "Set an assembler pragma to any value understood by the \"pragma\" pseudo op"}, |
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171 { "6809", '9', 0, 0, |
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172 "Set assembler to 6809 only mode" }, |
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173 { "6309", '3', 0, 0, |
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174 "Set assembler to 6309 mode (default)" }, |
| 257 | 175 { "includedir", 'I', "PATH", 0, |
| 176 "Add entry to include path" }, | |
| 0 | 177 { 0 } |
| 178 }; | |
| 179 | |
| 180 static struct argp argp = | |
| 181 { | |
| 182 options, | |
| 183 parse_opts, | |
| 184 "<input file>", | |
| 185 "LWASM, a HD6309 and MC6809 cross-assembler" | |
| 186 }; | |
| 187 | |
| 212 | 188 char *program_name; |
| 189 | |
| 0 | 190 // main function; parse command line, set up assembler state, and run the |
| 191 // assembler on the first file | |
| 192 int main(int argc, char **argv) | |
| 193 { | |
| 212 | 194 |
| 195 program_name = argv[0]; | |
| 196 | |
| 0 | 197 // assembler state |
| 198 asmstate_t asmstate = { 0 }; | |
| 199 | |
| 200 argp_parse(&argp, argc, argv, 0, 0, &asmstate); | |
| 201 | |
| 19 | 202 if (!asmstate.infile) |
| 203 { | |
| 204 fprintf(stderr, "No input files specified.\n"); | |
| 205 exit(1); | |
| 206 } | |
| 207 | |
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208 // lose the output file if it already exists... |
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209 unlink(asmstate.outfile); |
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210 |
| 0 | 211 /* pass 1 - collect the symbols and assign addresses where possible */ |
| 212 /* pass 1 also resolves included files, etc. */ | |
| 213 /* that means files are read exactly once unless included multiple times */ | |
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214 lwasm_pass1(&asmstate); |
| 0 | 215 |
| 216 // pass 2: actually generate the code; if any phasing errors appear | |
| 217 // at this stage, we have a bug | |
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218 lwasm_pass2(&asmstate); |
| 0 | 219 |
| 220 // now make a pretty listing | |
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221 lwasm_list(&asmstate); |
| 0 | 222 |
| 223 // now write the code out to the output file | |
| 46 | 224 lwasm_output(&asmstate); |
| 0 | 225 |
| 226 if (asmstate.errorcount > 0) | |
| 227 exit(1); | |
| 228 | |
| 229 exit(0); | |
| 230 } | |
| 231 |