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annotate lwlink/main.c @ 254:c7a41b4c89b3 2.x
Added struct support to LWASM
| author | lost |
|---|---|
| date | Sat, 19 Dec 2009 06:38:43 +0000 |
| parents | bae1e3ecdce1 |
| children |
| rev | line source |
|---|---|
| 112 | 1 /* |
| 2 main.c | |
| 118 | 3 Copyright © 2009 William Astle |
| 112 | 4 |
| 5 This file is part of LWLINK. | |
| 6 | |
| 7 LWLINK 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 | |
| 212 | 25 #include <config.h> |
| 112 | 26 |
| 27 #include <argp.h> | |
| 28 #include <errno.h> | |
| 29 #include <stdio.h> | |
| 30 #include <stdlib.h> | |
|
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31 #include <unistd.h> |
| 112 | 32 |
| 33 #include "lwlink.h" | |
| 34 | |
| 212 | 35 char *program_name; |
| 36 | |
| 112 | 37 // command line option handling |
| 142 | 38 const char *argp_program_version = "LWLINK from " PACKAGE_STRING; |
| 112 | 39 const char *argp_program_bug_address = PACKAGE_BUGREPORT; |
| 40 | |
| 41 static error_t parse_opts(int key, char *arg, struct argp_state *state) | |
| 42 { | |
| 43 switch (key) | |
| 44 { | |
| 45 case 'o': | |
| 46 // output | |
| 47 outfile = arg; | |
| 48 break; | |
| 49 | |
| 117 | 50 case 's': |
| 51 // script file | |
| 52 scriptfile = arg; | |
| 53 break; | |
| 54 | |
| 112 | 55 case 'd': |
| 56 // debug | |
| 57 debug_level++; | |
| 58 break; | |
| 59 | |
| 60 case 'b': | |
| 61 // decb output | |
| 62 outformat = OUTPUT_DECB; | |
| 63 break; | |
| 64 | |
| 65 case 'r': | |
| 66 // raw binary output | |
| 67 outformat = OUTPUT_RAW; | |
| 68 break; | |
| 69 | |
| 70 case 'f': | |
| 71 // output format | |
| 72 if (!strcasecmp(arg, "decb")) | |
| 73 outformat = OUTPUT_DECB; | |
| 74 else if (!strcasecmp(arg, "raw")) | |
| 75 outformat = OUTPUT_RAW; | |
| 187 | 76 else if (!strcasecmp(arg, "lwex0") || !strcasecmp(arg, "lwex")) |
| 77 outformat = OUTPUT_LWEX0; | |
| 112 | 78 else |
| 79 { | |
| 80 fprintf(stderr, "Invalid output format: %s\n", arg); | |
| 81 exit(1); | |
| 82 } | |
| 83 break; | |
| 84 case ARGP_KEY_END: | |
| 85 // done; sanity check | |
| 86 if (!outfile) | |
| 87 outfile = "a.out"; | |
| 88 break; | |
| 89 | |
| 180 | 90 case 'l': |
| 91 add_input_library(arg); | |
| 92 break; | |
| 93 | |
| 94 case 'L': | |
| 95 add_library_search(arg); | |
| 96 break; | |
| 97 | |
| 98 case 0x100: | |
| 99 add_section_base(arg); | |
| 100 break; | |
| 185 | 101 |
| 102 case 'm': | |
| 103 map_file = arg; | |
| 104 break; | |
| 105 | |
| 112 | 106 case ARGP_KEY_ARG: |
|
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107 add_input_file(arg); |
| 112 | 108 break; |
| 109 | |
| 110 default: | |
| 111 return ARGP_ERR_UNKNOWN; | |
| 112 } | |
| 113 return 0; | |
| 114 } | |
| 115 | |
| 116 static struct argp_option options[] = | |
| 117 { | |
| 118 { "output", 'o', "FILE", 0, | |
| 119 "Output to FILE"}, | |
| 120 { "debug", 'd', 0, 0, | |
| 121 "Set debug mode"}, | |
| 122 { "format", 'f', "TYPE", 0, | |
| 187 | 123 "Select output format: decb, raw, lwex"}, |
| 112 | 124 { "decb", 'b', 0, 0, |
| 125 "Generate DECB .bin format output, equivalent of --format=decb"}, | |
| 126 { "raw", 'r', 0, 0, | |
| 127 "Generate raw binary format output, equivalent of --format=raw"}, | |
|
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128 { "script", 's', "FILE", 0, |
| 180 | 129 "Specify the linking script (overrides the built in defaults)"}, |
| 130 { "library", 'l', "LIBSPEC", 0, | |
| 131 "Read library libLIBSPEC.a from the search path" }, | |
| 132 { "library-path", 'L', "DIR", 0, | |
| 133 "Add DIR to the library search path" }, | |
| 134 { "section-base", 0x100, "SECT=BASE", 0, | |
| 135 "Load section SECT at BASE" }, | |
| 185 | 136 { "map", 'm', "FILE", 0, |
| 137 "Output informaiton about the link" }, | |
| 112 | 138 { 0 } |
| 139 }; | |
| 140 | |
| 141 static struct argp argp = | |
| 142 { | |
| 143 options, | |
| 144 parse_opts, | |
| 145 "<input file> ...", | |
| 146 "LWLINK, a HD6309 and MC6809 cross-linker" | |
| 147 }; | |
| 148 | |
| 115 | 149 extern void read_files(void); |
| 117 | 150 extern void setup_script(void); |
| 205 | 151 extern void resolve_files(void); |
| 119 | 152 extern void resolve_sections(void); |
| 121 | 153 extern void resolve_references(void); |
| 154 extern void do_output(void); | |
| 185 | 155 extern void display_map(void); |
| 115 | 156 |
| 112 | 157 // main function; parse command line, set up assembler state, and run the |
| 158 // assembler on the first file | |
| 159 int main(int argc, char **argv) | |
| 160 { | |
| 212 | 161 program_name = argv[0]; |
| 162 | |
| 112 | 163 argp_parse(&argp, argc, argv, 0, 0, NULL); |
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164 if (ninputfiles == 0) |
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165 { |
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166 fprintf(stderr, "No input files\n"); |
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167 exit(1); |
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168 } |
| 115 | 169 |
|
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170 unlink(outfile); |
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171 |
| 119 | 172 // handle the linker script |
| 117 | 173 setup_script(); |
| 174 | |
| 115 | 175 // read the input files |
| 176 read_files(); | |
| 205 | 177 |
| 178 // trace unresolved references and determine which non-forced | |
| 179 // objects must be included | |
| 180 resolve_files(); | |
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181 |
| 119 | 182 // resolve section bases and section order |
| 183 resolve_sections(); | |
| 184 | |
| 121 | 185 // resolve incomplete references |
| 186 resolve_references(); | |
| 187 | |
| 188 // do the actual output | |
| 189 do_output(); | |
| 185 | 190 |
| 191 // display/output the link map | |
| 192 if (map_file) | |
| 193 display_map(); | |
| 194 | |
| 112 | 195 exit(0); |
| 196 } |