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40b8e679 L |
1 | /* Copyright 2007 Free Software Foundation, Inc. |
2 | ||
3 | This file is part of GAS, the GNU Assembler, and GDB, the GNU Debugger. | |
4 | ||
5 | This program is free software; you can redistribute it and/or modify | |
6 | it under the terms of the GNU General Public License as published by | |
7 | the Free Software Foundation; either version 2 of the License, or | |
8 | (at your option) any later version. | |
9 | ||
10 | This program is distributed in the hope that it will be useful, | |
11 | but WITHOUT ANY WARRANTY; without even the implied warranty of | |
12 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
13 | GNU General Public License for more details. | |
14 | ||
15 | You should have received a copy of the GNU General Public License | |
16 | along with this program; if not, write to the Free Software | |
17 | Foundation, Inc., 51 Franklin Street - Fifth Floor, Boston, MA 02110-1301, USA. */ | |
18 | ||
19 | #include <stdio.h> | |
20 | #include <stdlib.h> | |
21 | #include <string.h> | |
22 | #include <errno.h> | |
23 | #include "getopt.h" | |
24 | #include "libiberty.h" | |
25 | #include "safe-ctype.h" | |
26 | ||
27 | #include "i386-opc.h" | |
28 | ||
29 | #include <libintl.h> | |
30 | #define _(String) gettext (String) | |
31 | ||
32 | static const char *program_name = NULL; | |
33 | static int debug = 0; | |
34 | ||
35 | static void | |
36 | fail (const char *message, ...) | |
37 | { | |
38 | va_list args; | |
39 | ||
40 | va_start (args, message); | |
41 | fprintf (stderr, _("%s: Error: "), program_name); | |
42 | vfprintf (stderr, message, args); | |
43 | va_end (args); | |
44 | xexit (1); | |
45 | } | |
46 | ||
47 | /* Remove leading white spaces. */ | |
48 | ||
49 | static char * | |
50 | remove_leading_whitespaces (char *str) | |
51 | { | |
52 | while (ISSPACE (*str)) | |
53 | str++; | |
54 | return str; | |
55 | } | |
56 | ||
57 | /* Remove trailing white spaces. */ | |
58 | ||
59 | static void | |
60 | remove_trailing_whitespaces (char *str) | |
61 | { | |
62 | size_t last = strlen (str); | |
63 | ||
64 | if (last == 0) | |
65 | return; | |
66 | ||
67 | do | |
68 | { | |
69 | last--; | |
70 | if (ISSPACE (str [last])) | |
71 | str[last] = '\0'; | |
72 | else | |
73 | break; | |
74 | } | |
75 | while (last != 0); | |
76 | } | |
77 | ||
78 | /* Find next field separated by '.' and terminate it. Return a | |
79 | pointer to the one after it. */ | |
80 | ||
81 | static char * | |
82 | next_field (char *str, char **next) | |
83 | { | |
84 | char *p; | |
85 | ||
86 | p = remove_leading_whitespaces (str); | |
87 | for (str = p; *str != ',' && *str != '\0'; str++); | |
88 | ||
89 | *str = '\0'; | |
90 | remove_trailing_whitespaces (p); | |
91 | ||
92 | *next = str + 1; | |
93 | ||
94 | return p; | |
95 | } | |
96 | ||
97 | static void | |
98 | process_i386_opcodes (void) | |
99 | { | |
100 | FILE *fp = fopen ("i386-opc.tbl", "r"); | |
101 | char buf[2048]; | |
102 | unsigned int i; | |
103 | char *str, *p, *last; | |
104 | char *name, *operands, *base_opcode, *extension_opcode; | |
105 | char *cpu_flags, *opcode_modifier, *operand_types [MAX_OPERANDS]; | |
106 | ||
107 | if (fp == NULL) | |
108 | fail (_("can't find i386-opc.tbl for reading\n")); | |
109 | ||
110 | printf ("\n/* i386 opcode table. */\n\n"); | |
111 | printf ("const template i386_optab[] =\n{\n"); | |
112 | ||
113 | while (!feof (fp)) | |
114 | { | |
115 | if (fgets (buf, sizeof (buf), fp) == NULL) | |
116 | break; | |
117 | ||
118 | p = remove_leading_whitespaces (buf); | |
119 | ||
120 | /* Skip comments. */ | |
121 | str = strstr (p, "//"); | |
122 | if (str != NULL) | |
123 | str[0] = '\0'; | |
124 | ||
125 | /* Remove trailing white spaces. */ | |
126 | remove_trailing_whitespaces (p); | |
127 | ||
128 | switch (p[0]) | |
129 | { | |
130 | case '#': | |
131 | printf ("%s\n", p); | |
132 | case '\0': | |
133 | continue; | |
134 | break; | |
135 | default: | |
136 | break; | |
137 | } | |
138 | ||
139 | last = p + strlen (p); | |
140 | ||
141 | /* Find name. */ | |
142 | name = next_field (p, &str); | |
143 | ||
144 | if (str >= last) | |
145 | abort (); | |
146 | ||
147 | /* Find number of operands. */ | |
148 | operands = next_field (str, &str); | |
149 | ||
150 | if (str >= last) | |
151 | abort (); | |
152 | ||
153 | /* Find base_opcode. */ | |
154 | base_opcode = next_field (str, &str); | |
155 | ||
156 | if (str >= last) | |
157 | abort (); | |
158 | ||
159 | /* Find extension_opcode. */ | |
160 | extension_opcode = next_field (str, &str); | |
161 | ||
162 | if (str >= last) | |
163 | abort (); | |
164 | ||
165 | /* Find cpu_flags. */ | |
166 | cpu_flags = next_field (str, &str); | |
167 | ||
168 | if (str >= last) | |
169 | abort (); | |
170 | ||
171 | /* Find opcode_modifier. */ | |
172 | opcode_modifier = next_field (str, &str); | |
173 | ||
174 | if (str >= last) | |
175 | abort (); | |
176 | ||
177 | /* Remove the first {. */ | |
178 | str = remove_leading_whitespaces (str); | |
179 | if (*str != '{') | |
180 | abort (); | |
181 | str = remove_leading_whitespaces (str + 1); | |
182 | ||
183 | i = strlen (str); | |
184 | ||
185 | /* There are at least "X}". */ | |
186 | if (i < 2) | |
187 | abort (); | |
188 | ||
189 | /* Remove trailing white spaces and }. */ | |
190 | do | |
191 | { | |
192 | i--; | |
193 | if (ISSPACE (str[i]) || str[i] == '}') | |
194 | str[i] = '\0'; | |
195 | else | |
196 | break; | |
197 | } | |
198 | while (i != 0); | |
199 | ||
200 | last = str + i; | |
201 | ||
202 | /* Find operand_types. */ | |
203 | for (i = 0; i < ARRAY_SIZE (operand_types); i++) | |
204 | { | |
205 | if (str >= last) | |
206 | { | |
207 | operand_types [i] = NULL; | |
208 | break; | |
209 | } | |
210 | ||
211 | operand_types [i] = next_field (str, &str); | |
212 | if (*operand_types[i] == '0') | |
213 | { | |
214 | if (i != 0) | |
215 | operand_types[i] = NULL; | |
216 | break; | |
217 | } | |
218 | } | |
219 | ||
220 | printf (" { \"%s\", %s, %s, %s, %s,\n", | |
221 | name, operands, base_opcode, extension_opcode, | |
222 | cpu_flags); | |
223 | ||
224 | printf (" %s,\n", opcode_modifier); | |
225 | ||
226 | printf (" { "); | |
227 | ||
228 | for (i = 0; i < ARRAY_SIZE (operand_types); i++) | |
229 | { | |
230 | if (operand_types[i] == NULL | |
231 | || *operand_types[i] == '0') | |
232 | { | |
233 | if (i == 0) | |
234 | printf ("0"); | |
235 | break; | |
236 | } | |
237 | ||
238 | if (i != 0) | |
239 | printf (",\n "); | |
240 | ||
241 | printf ("%s", operand_types[i]); | |
242 | } | |
243 | printf (" } },\n"); | |
244 | } | |
245 | ||
246 | printf (" { NULL, 0, 0, 0, 0, 0, { 0 } }\n"); | |
247 | printf ("};\n"); | |
248 | } | |
249 | ||
250 | static void | |
251 | process_i386_registers (void) | |
252 | { | |
253 | FILE *fp = fopen ("i386-reg.tbl", "r"); | |
254 | char buf[2048]; | |
255 | char *str, *p, *last; | |
256 | char *reg_name, *reg_type, *reg_flags, *reg_num; | |
257 | ||
258 | if (fp == NULL) | |
259 | fail (_("can't find i386-reg.tbl for reading\n")); | |
260 | ||
261 | printf ("\n/* i386 register table. */\n\n"); | |
262 | printf ("const reg_entry i386_regtab[] =\n{\n"); | |
263 | ||
264 | while (!feof (fp)) | |
265 | { | |
266 | if (fgets (buf, sizeof (buf), fp) == NULL) | |
267 | break; | |
268 | ||
269 | p = remove_leading_whitespaces (buf); | |
270 | ||
271 | /* Skip comments. */ | |
272 | str = strstr (p, "//"); | |
273 | if (str != NULL) | |
274 | str[0] = '\0'; | |
275 | ||
276 | /* Remove trailing white spaces. */ | |
277 | remove_trailing_whitespaces (p); | |
278 | ||
279 | switch (p[0]) | |
280 | { | |
281 | case '#': | |
282 | printf ("%s\n", p); | |
283 | case '\0': | |
284 | continue; | |
285 | break; | |
286 | default: | |
287 | break; | |
288 | } | |
289 | ||
290 | last = p + strlen (p); | |
291 | ||
292 | /* Find reg_name. */ | |
293 | reg_name = next_field (p, &str); | |
294 | ||
295 | if (str >= last) | |
296 | abort (); | |
297 | ||
298 | /* Find reg_type. */ | |
299 | reg_type = next_field (str, &str); | |
300 | ||
301 | if (str >= last) | |
302 | abort (); | |
303 | ||
304 | /* Find reg_flags. */ | |
305 | reg_flags = next_field (str, &str); | |
306 | ||
307 | if (str >= last) | |
308 | abort (); | |
309 | ||
310 | /* Find reg_num. */ | |
311 | reg_num = next_field (str, &str); | |
312 | ||
313 | printf (" { \"%s\", %s, %s, %s },\n", | |
314 | reg_name, reg_type, reg_flags, reg_num); | |
315 | } | |
316 | ||
317 | printf ("};\n"); | |
318 | ||
319 | printf ("\nconst unsigned int i386_regtab_size = ARRAY_SIZE (i386_regtab);\n"); | |
320 | } | |
321 | ||
322 | /* Program options. */ | |
323 | #define OPTION_SRCDIR 200 | |
324 | ||
325 | struct option long_options[] = | |
326 | { | |
327 | {"srcdir", required_argument, NULL, OPTION_SRCDIR}, | |
328 | {"debug", no_argument, NULL, 'd'}, | |
329 | {"version", no_argument, NULL, 'V'}, | |
330 | {"help", no_argument, NULL, 'h'}, | |
331 | {0, no_argument, NULL, 0} | |
332 | }; | |
333 | ||
334 | static void | |
335 | print_version (void) | |
336 | { | |
337 | printf ("%s: version 1.0\n", program_name); | |
338 | xexit (0); | |
339 | } | |
340 | ||
341 | static void | |
342 | usage (FILE * stream, int status) | |
343 | { | |
344 | fprintf (stream, "Usage: %s [-V | --version] [-d | --debug] [--srcdir=dirname] [--help]\n", | |
345 | program_name); | |
346 | xexit (status); | |
347 | } | |
348 | ||
349 | int | |
350 | main (int argc, char **argv) | |
351 | { | |
352 | extern int chdir (char *); | |
353 | char *srcdir = NULL; | |
354 | int c; | |
355 | ||
356 | program_name = *argv; | |
357 | xmalloc_set_program_name (program_name); | |
358 | ||
359 | while ((c = getopt_long (argc, argv, "vVdh", long_options, 0)) != EOF) | |
360 | switch (c) | |
361 | { | |
362 | case OPTION_SRCDIR: | |
363 | srcdir = optarg; | |
364 | break; | |
365 | case 'V': | |
366 | case 'v': | |
367 | print_version (); | |
368 | break; | |
369 | case 'd': | |
370 | debug = 1; | |
371 | break; | |
372 | case 'h': | |
373 | case '?': | |
374 | usage (stderr, 0); | |
375 | default: | |
376 | case 0: | |
377 | break; | |
378 | } | |
379 | ||
380 | if (optind != argc) | |
381 | usage (stdout, 1); | |
382 | ||
383 | if (srcdir != NULL) | |
384 | if (chdir (srcdir) != 0) | |
385 | fail (_("unable to change directory to \"%s\", errno = %s\n"), | |
386 | srcdir, strerror (errno)); | |
387 | ||
388 | printf ("/* This file is automatically generated by i386-gen. Do not edit! */\n"); | |
389 | ||
390 | process_i386_opcodes (); | |
391 | process_i386_registers (); | |
392 | ||
393 | exit (0); | |
394 | } |