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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 |
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date | Wed, 22 Oct 2008 04:51:16 +0000 |
parents | 287a6905a63c |
children | 925105ccf22f |
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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 |