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14c7833c | 1 | /* Command line option handling. |
eb50f63a | 2 | Copyright (C) 2006, 2007, 2008, 2010, 2011 Free Software Foundation, Inc. |
14c7833c L |
3 | |
4 | This file is part of GCC. | |
5 | ||
6 | GCC is free software; you can redistribute it and/or modify it under | |
7 | the terms of the GNU General Public License as published by the Free | |
9dcd6f09 | 8 | Software Foundation; either version 3, or (at your option) any later |
14c7833c L |
9 | version. |
10 | ||
11 | GCC is distributed in the hope that it will be useful, but WITHOUT ANY | |
12 | WARRANTY; without even the implied warranty of MERCHANTABILITY or | |
13 | FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License | |
14 | for more details. | |
15 | ||
16 | You should have received a copy of the GNU General Public License | |
9dcd6f09 NC |
17 | along with GCC; see the file COPYING3. If not see |
18 | <http://www.gnu.org/licenses/>. */ | |
14c7833c L |
19 | |
20 | #include "config.h" | |
21 | #include "system.h" | |
22 | #include "intl.h" | |
23 | #include "coretypes.h" | |
24 | #include "opts.h" | |
a75bfaa6 | 25 | #include "flags.h" |
5f20c657 | 26 | #include "diagnostic.h" |
14c7833c | 27 | |
60cf253a JM |
28 | static void prune_options (struct cl_decoded_option **, unsigned int *); |
29 | ||
14c7833c | 30 | /* Perform a binary search to find which option the command-line INPUT |
6e2f1956 JM |
31 | matches. Returns its index in the option array, and |
32 | OPT_SPECIAL_unknown on failure. | |
14c7833c L |
33 | |
34 | This routine is quite subtle. A normal binary search is not good | |
35 | enough because some options can be suffixed with an argument, and | |
36 | multiple sub-matches can occur, e.g. input of "-pedantic" matching | |
37 | the initial substring of "-pedantic-errors". | |
38 | ||
39 | A more complicated example is -gstabs. It should match "-g" with | |
40 | an argument of "stabs". Suppose, however, that the number and list | |
41 | of switches are such that the binary search tests "-gen-decls" | |
42 | before having tested "-g". This doesn't match, and as "-gen-decls" | |
43 | is less than "-gstabs", it will become the lower bound of the | |
44 | binary search range, and "-g" will never be seen. To resolve this | |
af47e6ac | 45 | issue, 'optc-gen.awk' makes "-gen-decls" point, via the back_chain member, |
14c7833c L |
46 | to "-g" so that failed searches that end between "-gen-decls" and |
47 | the lexicographically subsequent switch know to go back and see if | |
48 | "-g" causes a match (which it does in this example). | |
49 | ||
50 | This search is done in such a way that the longest match for the | |
51 | front end in question wins. If there is no match for the current | |
52 | front end, the longest match for a different front end is returned | |
53 | (or N_OPTS if none) and the caller emits an error message. */ | |
54 | size_t | |
eb50f63a | 55 | find_opt (const char *input, unsigned int lang_mask) |
14c7833c | 56 | { |
e200444e | 57 | size_t mn, mn_orig, mx, md, opt_len; |
14c7833c L |
58 | size_t match_wrong_lang; |
59 | int comp; | |
60 | ||
61 | mn = 0; | |
62 | mx = cl_options_count; | |
63 | ||
64 | /* Find mn such this lexicographical inequality holds: | |
65 | cl_options[mn] <= input < cl_options[mn + 1]. */ | |
66 | while (mx - mn > 1) | |
67 | { | |
68 | md = (mn + mx) / 2; | |
69 | opt_len = cl_options[md].opt_len; | |
70 | comp = strncmp (input, cl_options[md].opt_text + 1, opt_len); | |
71 | ||
72 | if (comp < 0) | |
73 | mx = md; | |
74 | else | |
75 | mn = md; | |
76 | } | |
77 | ||
e200444e JM |
78 | mn_orig = mn; |
79 | ||
14c7833c | 80 | /* This is the switch that is the best match but for a different |
6e2f1956 JM |
81 | front end, or OPT_SPECIAL_unknown if there is no match at all. */ |
82 | match_wrong_lang = OPT_SPECIAL_unknown; | |
14c7833c L |
83 | |
84 | /* Backtrace the chain of possible matches, returning the longest | |
85 | one, if any, that fits best. With current GCC switches, this | |
86 | loop executes at most twice. */ | |
87 | do | |
88 | { | |
89 | const struct cl_option *opt = &cl_options[mn]; | |
90 | ||
91 | /* Is the input either an exact match or a prefix that takes a | |
92 | joined argument? */ | |
93 | if (!strncmp (input, opt->opt_text + 1, opt->opt_len) | |
94 | && (input[opt->opt_len] == '\0' || (opt->flags & CL_JOINED))) | |
95 | { | |
96 | /* If language is OK, return it. */ | |
97 | if (opt->flags & lang_mask) | |
98 | return mn; | |
99 | ||
100 | /* If we haven't remembered a prior match, remember this | |
101 | one. Any prior match is necessarily better. */ | |
6e2f1956 | 102 | if (match_wrong_lang == OPT_SPECIAL_unknown) |
14c7833c L |
103 | match_wrong_lang = mn; |
104 | } | |
105 | ||
106 | /* Try the next possibility. This is cl_options_count if there | |
107 | are no more. */ | |
108 | mn = opt->back_chain; | |
109 | } | |
110 | while (mn != cl_options_count); | |
111 | ||
e200444e JM |
112 | if (match_wrong_lang == OPT_SPECIAL_unknown && input[0] == '-') |
113 | { | |
114 | /* Long options, starting "--", may be abbreviated if the | |
115 | abbreviation is unambiguous. This only applies to options | |
116 | not taking a joined argument, and abbreviations of "--option" | |
117 | are permitted even if there is a variant "--option=". */ | |
118 | size_t mnc = mn_orig + 1; | |
119 | size_t cmp_len = strlen (input); | |
120 | while (mnc < cl_options_count | |
121 | && strncmp (input, cl_options[mnc].opt_text + 1, cmp_len) == 0) | |
122 | { | |
123 | /* Option matching this abbreviation. OK if it is the first | |
124 | match and that does not take a joined argument, or the | |
125 | second match, taking a joined argument and with only '=' | |
126 | added to the first match; otherwise considered | |
127 | ambiguous. */ | |
128 | if (mnc == mn_orig + 1 | |
129 | && !(cl_options[mnc].flags & CL_JOINED)) | |
130 | match_wrong_lang = mnc; | |
131 | else if (mnc == mn_orig + 2 | |
132 | && match_wrong_lang == mn_orig + 1 | |
133 | && (cl_options[mnc].flags & CL_JOINED) | |
134 | && (cl_options[mnc].opt_len | |
135 | == cl_options[mn_orig + 1].opt_len + 1) | |
136 | && strncmp (cl_options[mnc].opt_text + 1, | |
137 | cl_options[mn_orig + 1].opt_text + 1, | |
138 | cl_options[mn_orig + 1].opt_len) == 0) | |
139 | ; /* OK, as long as there are no more matches. */ | |
140 | else | |
141 | return OPT_SPECIAL_unknown; | |
142 | mnc++; | |
143 | } | |
144 | } | |
145 | ||
6e2f1956 | 146 | /* Return the best wrong match, or OPT_SPECIAL_unknown if none. */ |
14c7833c L |
147 | return match_wrong_lang; |
148 | } | |
149 | ||
5d4b393f JM |
150 | /* If ARG is a non-negative integer made up solely of digits, return its |
151 | value, otherwise return -1. */ | |
152 | ||
153 | int | |
154 | integral_argument (const char *arg) | |
155 | { | |
156 | const char *p = arg; | |
157 | ||
158 | while (*p && ISDIGIT (*p)) | |
159 | p++; | |
160 | ||
161 | if (*p == '\0') | |
162 | return atoi (arg); | |
163 | ||
164 | return -1; | |
165 | } | |
166 | ||
d9d16a19 JM |
167 | /* Return whether OPTION is OK for the language given by |
168 | LANG_MASK. */ | |
169 | static bool | |
170 | option_ok_for_language (const struct cl_option *option, | |
171 | unsigned int lang_mask) | |
172 | { | |
173 | if (!(option->flags & lang_mask)) | |
174 | return false; | |
175 | else if ((option->flags & CL_TARGET) | |
176 | && (option->flags & (CL_LANG_ALL | CL_DRIVER)) | |
177 | && !(option->flags & (lang_mask & ~CL_COMMON & ~CL_TARGET))) | |
178 | /* Complain for target flag language mismatches if any languages | |
179 | are specified. */ | |
180 | return false; | |
181 | return true; | |
182 | } | |
183 | ||
e6d4b984 JM |
184 | /* Return whether ENUM_ARG is OK for the language given by |
185 | LANG_MASK. */ | |
186 | ||
187 | static bool | |
188 | enum_arg_ok_for_language (const struct cl_enum_arg *enum_arg, | |
189 | unsigned int lang_mask) | |
190 | { | |
191 | return (lang_mask & CL_DRIVER) || !(enum_arg->flags & CL_ENUM_DRIVER_ONLY); | |
192 | } | |
193 | ||
194 | /* Look up ARG in ENUM_ARGS for language LANG_MASK, returning true and | |
195 | storing the value in *VALUE if found, and returning false without | |
196 | modifying *VALUE if not found. */ | |
197 | ||
198 | static bool | |
199 | enum_arg_to_value (const struct cl_enum_arg *enum_args, | |
200 | const char *arg, int *value, unsigned int lang_mask) | |
201 | { | |
202 | unsigned int i; | |
203 | ||
204 | for (i = 0; enum_args[i].arg != NULL; i++) | |
205 | if (strcmp (arg, enum_args[i].arg) == 0 | |
206 | && enum_arg_ok_for_language (&enum_args[i], lang_mask)) | |
207 | { | |
208 | *value = enum_args[i].value; | |
209 | return true; | |
210 | } | |
211 | ||
212 | return false; | |
213 | } | |
214 | ||
215 | /* Look of VALUE in ENUM_ARGS for language LANG_MASK and store the | |
216 | corresponding string in *ARGP, returning true if the found string | |
217 | was marked as canonical, false otherwise. If VALUE is not found | |
218 | (which may be the case for uninitialized values if the relevant | |
219 | option has not been passed), set *ARGP to NULL and return | |
220 | false. */ | |
221 | ||
222 | bool | |
223 | enum_value_to_arg (const struct cl_enum_arg *enum_args, | |
224 | const char **argp, int value, unsigned int lang_mask) | |
225 | { | |
226 | unsigned int i; | |
227 | ||
228 | for (i = 0; enum_args[i].arg != NULL; i++) | |
229 | if (enum_args[i].value == value | |
230 | && (enum_args[i].flags & CL_ENUM_CANONICAL) | |
231 | && enum_arg_ok_for_language (&enum_args[i], lang_mask)) | |
232 | { | |
233 | *argp = enum_args[i].arg; | |
234 | return true; | |
235 | } | |
236 | ||
237 | for (i = 0; enum_args[i].arg != NULL; i++) | |
238 | if (enum_args[i].value == value | |
239 | && enum_arg_ok_for_language (&enum_args[i], lang_mask)) | |
240 | { | |
241 | *argp = enum_args[i].arg; | |
242 | return false; | |
243 | } | |
244 | ||
245 | *argp = NULL; | |
246 | return false; | |
247 | } | |
5de8299c JM |
248 | |
249 | /* Fill in the canonical option part of *DECODED with an option | |
250 | described by OPT_INDEX, ARG and VALUE. */ | |
251 | ||
252 | static void | |
253 | generate_canonical_option (size_t opt_index, const char *arg, int value, | |
254 | struct cl_decoded_option *decoded) | |
255 | { | |
256 | const struct cl_option *option = &cl_options[opt_index]; | |
257 | const char *opt_text = option->opt_text; | |
258 | ||
259 | if (value == 0 | |
260 | && !(option->flags & CL_REJECT_NEGATIVE) | |
261 | && (opt_text[1] == 'W' || opt_text[1] == 'f' || opt_text[1] == 'm')) | |
262 | { | |
263 | char *t = XNEWVEC (char, option->opt_len + 5); | |
264 | t[0] = '-'; | |
265 | t[1] = opt_text[1]; | |
266 | t[2] = 'n'; | |
267 | t[3] = 'o'; | |
268 | t[4] = '-'; | |
269 | memcpy (t + 5, opt_text + 2, option->opt_len); | |
270 | opt_text = t; | |
271 | } | |
272 | ||
273 | decoded->canonical_option[2] = NULL; | |
274 | decoded->canonical_option[3] = NULL; | |
275 | ||
276 | if (arg) | |
277 | { | |
d1583032 JM |
278 | if ((option->flags & CL_SEPARATE) |
279 | && !(option->flags & CL_SEPARATE_ALIAS)) | |
5de8299c JM |
280 | { |
281 | decoded->canonical_option[0] = opt_text; | |
282 | decoded->canonical_option[1] = arg; | |
283 | decoded->canonical_option_num_elements = 2; | |
284 | } | |
285 | else | |
286 | { | |
287 | gcc_assert (option->flags & CL_JOINED); | |
288 | decoded->canonical_option[0] = concat (opt_text, arg, NULL); | |
289 | decoded->canonical_option[1] = NULL; | |
290 | decoded->canonical_option_num_elements = 1; | |
291 | } | |
292 | } | |
293 | else | |
294 | { | |
295 | decoded->canonical_option[0] = opt_text; | |
296 | decoded->canonical_option[1] = NULL; | |
297 | decoded->canonical_option_num_elements = 1; | |
298 | } | |
299 | } | |
300 | ||
e200444e JM |
301 | /* Structure describing mappings from options on the command line to |
302 | options to look up with find_opt. */ | |
303 | struct option_map | |
304 | { | |
305 | /* Prefix of the option on the command line. */ | |
306 | const char *opt0; | |
307 | /* If two argv elements are considered to be merged into one option, | |
308 | prefix for the second element, otherwise NULL. */ | |
309 | const char *opt1; | |
310 | /* The new prefix to map to. */ | |
311 | const char *new_prefix; | |
312 | /* Whether at least one character is needed following opt1 or opt0 | |
313 | for this mapping to be used. (--optimize= is valid for -O, but | |
314 | --warn- is not valid for -W.) */ | |
315 | bool another_char_needed; | |
316 | /* Whether the original option is a negated form of the option | |
317 | resulting from this map. */ | |
318 | bool negated; | |
319 | }; | |
320 | static const struct option_map option_map[] = | |
321 | { | |
322 | { "-Wno-", NULL, "-W", false, true }, | |
323 | { "-fno-", NULL, "-f", false, true }, | |
324 | { "-mno-", NULL, "-m", false, true }, | |
325 | { "--debug=", NULL, "-g", false, false }, | |
326 | { "--machine-", NULL, "-m", true, false }, | |
327 | { "--machine-no-", NULL, "-m", false, true }, | |
328 | { "--machine=", NULL, "-m", false, false }, | |
329 | { "--machine=no-", NULL, "-m", false, true }, | |
330 | { "--machine", "", "-m", false, false }, | |
331 | { "--machine", "no-", "-m", false, true }, | |
332 | { "--optimize=", NULL, "-O", false, false }, | |
333 | { "--std=", NULL, "-std=", false, false }, | |
334 | { "--std", "", "-std=", false, false }, | |
335 | { "--warn-", NULL, "-W", true, false }, | |
336 | { "--warn-no-", NULL, "-W", false, true }, | |
337 | { "--", NULL, "-f", true, false }, | |
338 | { "--no-", NULL, "-f", false, true } | |
339 | }; | |
340 | ||
5d4b393f | 341 | /* Decode the switch beginning at ARGV for the language indicated by |
603349bf JM |
342 | LANG_MASK (including CL_COMMON and CL_TARGET if applicable), into |
343 | the structure *DECODED. Returns the number of switches | |
344 | consumed. */ | |
5d4b393f | 345 | |
6e2f1956 | 346 | static unsigned int |
5d4b393f JM |
347 | decode_cmdline_option (const char **argv, unsigned int lang_mask, |
348 | struct cl_decoded_option *decoded) | |
349 | { | |
350 | size_t opt_index; | |
e200444e | 351 | const char *arg = 0; |
5d4b393f | 352 | int value = 1; |
c8967d95 | 353 | unsigned int result = 1, i, extra_args, separate_args = 0; |
e200444e | 354 | int adjust_len = 0; |
eea13ead JM |
355 | size_t total_len; |
356 | char *p; | |
5d4b393f JM |
357 | const struct cl_option *option; |
358 | int errors = 0; | |
2d2bd949 | 359 | const char *warn_message = NULL; |
c878765b JM |
360 | bool separate_arg_flag; |
361 | bool joined_arg_flag; | |
d1583032 | 362 | bool have_separate_arg = false; |
5d4b393f | 363 | |
e200444e | 364 | extra_args = 0; |
5d4b393f | 365 | |
e200444e JM |
366 | opt_index = find_opt (argv[0] + 1, lang_mask); |
367 | i = 0; | |
368 | while (opt_index == OPT_SPECIAL_unknown | |
369 | && i < ARRAY_SIZE (option_map)) | |
5d4b393f | 370 | { |
e200444e JM |
371 | const char *opt0 = option_map[i].opt0; |
372 | const char *opt1 = option_map[i].opt1; | |
373 | const char *new_prefix = option_map[i].new_prefix; | |
374 | bool another_char_needed = option_map[i].another_char_needed; | |
375 | size_t opt0_len = strlen (opt0); | |
376 | size_t opt1_len = (opt1 == NULL ? 0 : strlen (opt1)); | |
377 | size_t optn_len = (opt1 == NULL ? opt0_len : opt1_len); | |
378 | size_t new_prefix_len = strlen (new_prefix); | |
379 | ||
380 | extra_args = (opt1 == NULL ? 0 : 1); | |
381 | value = !option_map[i].negated; | |
382 | ||
383 | if (strncmp (argv[0], opt0, opt0_len) == 0 | |
384 | && (opt1 == NULL | |
385 | || (argv[1] != NULL && strncmp (argv[1], opt1, opt1_len) == 0)) | |
386 | && (!another_char_needed | |
387 | || argv[extra_args][optn_len] != 0)) | |
388 | { | |
389 | size_t arglen = strlen (argv[extra_args]); | |
390 | char *dup; | |
391 | ||
392 | adjust_len = (int) optn_len - (int) new_prefix_len; | |
393 | dup = XNEWVEC (char, arglen + 1 - adjust_len); | |
394 | memcpy (dup, new_prefix, new_prefix_len); | |
395 | memcpy (dup + new_prefix_len, argv[extra_args] + optn_len, | |
396 | arglen - optn_len + 1); | |
397 | opt_index = find_opt (dup + 1, lang_mask); | |
398 | free (dup); | |
399 | } | |
400 | i++; | |
5d4b393f JM |
401 | } |
402 | ||
6e2f1956 JM |
403 | if (opt_index == OPT_SPECIAL_unknown) |
404 | { | |
405 | arg = argv[0]; | |
e200444e JM |
406 | extra_args = 0; |
407 | value = 1; | |
6e2f1956 JM |
408 | goto done; |
409 | } | |
5d4b393f JM |
410 | |
411 | option = &cl_options[opt_index]; | |
412 | ||
413 | /* Reject negative form of switches that don't take negatives as | |
414 | unrecognized. */ | |
415 | if (!value && (option->flags & CL_REJECT_NEGATIVE)) | |
416 | { | |
6e2f1956 | 417 | opt_index = OPT_SPECIAL_unknown; |
184eb658 | 418 | errors |= CL_ERR_NEGATIVE; |
6e2f1956 | 419 | arg = argv[0]; |
5d4b393f JM |
420 | goto done; |
421 | } | |
422 | ||
e200444e | 423 | result = extra_args + 1; |
2d2bd949 JM |
424 | warn_message = option->warn_message; |
425 | ||
5d4b393f JM |
426 | /* Check to see if the option is disabled for this configuration. */ |
427 | if (option->flags & CL_DISABLED) | |
428 | errors |= CL_ERR_DISABLED; | |
429 | ||
c878765b | 430 | /* Determine whether there may be a separate argument based on |
c243beb0 JM |
431 | whether this option is being processed for the driver, and, if |
432 | so, how many such arguments. */ | |
c878765b JM |
433 | separate_arg_flag = ((option->flags & CL_SEPARATE) |
434 | && !((option->flags & CL_NO_DRIVER_ARG) | |
435 | && (lang_mask & CL_DRIVER))); | |
c243beb0 JM |
436 | separate_args = (separate_arg_flag |
437 | ? ((option->flags & CL_SEPARATE_NARGS_MASK) | |
438 | >> CL_SEPARATE_NARGS_SHIFT) + 1 | |
439 | : 0); | |
c878765b JM |
440 | joined_arg_flag = (option->flags & CL_JOINED) != 0; |
441 | ||
5d4b393f | 442 | /* Sort out any argument the switch takes. */ |
c878765b | 443 | if (joined_arg_flag) |
5d4b393f JM |
444 | { |
445 | /* Have arg point to the original switch. This is because | |
446 | some code, such as disable_builtin_function, expects its | |
447 | argument to be persistent until the program exits. */ | |
e200444e | 448 | arg = argv[extra_args] + cl_options[opt_index].opt_len + 1 + adjust_len; |
5d4b393f JM |
449 | |
450 | if (*arg == '\0' && !(option->flags & CL_MISSING_OK)) | |
451 | { | |
c878765b | 452 | if (separate_arg_flag) |
5d4b393f | 453 | { |
e200444e JM |
454 | arg = argv[extra_args + 1]; |
455 | result = extra_args + 2; | |
5d4b393f | 456 | if (arg == NULL) |
e200444e | 457 | result = extra_args + 1; |
d1583032 JM |
458 | else |
459 | have_separate_arg = true; | |
5d4b393f JM |
460 | } |
461 | else | |
462 | /* Missing argument. */ | |
463 | arg = NULL; | |
464 | } | |
465 | } | |
c878765b | 466 | else if (separate_arg_flag) |
5d4b393f | 467 | { |
e200444e | 468 | arg = argv[extra_args + 1]; |
c243beb0 JM |
469 | for (i = 0; i < separate_args; i++) |
470 | if (argv[extra_args + 1 + i] == NULL) | |
471 | { | |
472 | errors |= CL_ERR_MISSING_ARG; | |
473 | break; | |
474 | } | |
475 | result = extra_args + 1 + i; | |
476 | if (arg != NULL) | |
d1583032 | 477 | have_separate_arg = true; |
5d4b393f JM |
478 | } |
479 | ||
5de8299c JM |
480 | if (arg == NULL && (separate_arg_flag || joined_arg_flag)) |
481 | errors |= CL_ERR_MISSING_ARG; | |
482 | ||
2d2bd949 JM |
483 | /* Is this option an alias (or an ignored option, marked as an alias |
484 | of OPT_SPECIAL_ignore)? */ | |
d1583032 JM |
485 | if (option->alias_target != N_OPTS |
486 | && (!(option->flags & CL_SEPARATE_ALIAS) || have_separate_arg)) | |
5de8299c JM |
487 | { |
488 | size_t new_opt_index = option->alias_target; | |
5de8299c | 489 | |
2d2bd949 | 490 | if (new_opt_index == OPT_SPECIAL_ignore) |
5de8299c | 491 | { |
2d2bd949 JM |
492 | gcc_assert (option->alias_arg == NULL); |
493 | gcc_assert (option->neg_alias_arg == NULL); | |
494 | opt_index = new_opt_index; | |
495 | arg = NULL; | |
5de8299c JM |
496 | value = 1; |
497 | } | |
2d2bd949 | 498 | else |
5de8299c | 499 | { |
2d2bd949 | 500 | const struct cl_option *new_option = &cl_options[new_opt_index]; |
5de8299c | 501 | |
2d2bd949 | 502 | /* The new option must not be an alias itself. */ |
e200444e JM |
503 | gcc_assert (new_option->alias_target == N_OPTS |
504 | || (new_option->flags & CL_SEPARATE_ALIAS)); | |
5de8299c | 505 | |
2d2bd949 JM |
506 | if (option->neg_alias_arg) |
507 | { | |
508 | gcc_assert (option->alias_arg != NULL); | |
509 | gcc_assert (arg == NULL); | |
510 | if (value) | |
511 | arg = option->alias_arg; | |
512 | else | |
513 | arg = option->neg_alias_arg; | |
514 | value = 1; | |
515 | } | |
516 | else if (option->alias_arg) | |
517 | { | |
518 | gcc_assert (value == 1); | |
519 | gcc_assert (arg == NULL); | |
520 | arg = option->alias_arg; | |
521 | } | |
5de8299c | 522 | |
2d2bd949 JM |
523 | opt_index = new_opt_index; |
524 | option = new_option; | |
5de8299c | 525 | |
2d2bd949 JM |
526 | if (value == 0) |
527 | gcc_assert (!(option->flags & CL_REJECT_NEGATIVE)); | |
528 | ||
529 | /* Recompute what arguments are allowed. */ | |
530 | separate_arg_flag = ((option->flags & CL_SEPARATE) | |
531 | && !((option->flags & CL_NO_DRIVER_ARG) | |
532 | && (lang_mask & CL_DRIVER))); | |
533 | joined_arg_flag = (option->flags & CL_JOINED) != 0; | |
534 | ||
c243beb0 JM |
535 | if (separate_args > 1 || (option->flags & CL_SEPARATE_NARGS_MASK)) |
536 | gcc_assert (separate_args | |
537 | == ((option->flags & CL_SEPARATE_NARGS_MASK) | |
538 | >> CL_SEPARATE_NARGS_SHIFT) + 1); | |
539 | ||
2d2bd949 JM |
540 | if (!(errors & CL_ERR_MISSING_ARG)) |
541 | { | |
542 | if (separate_arg_flag || joined_arg_flag) | |
e200444e JM |
543 | { |
544 | if ((option->flags & CL_MISSING_OK) && arg == NULL) | |
545 | arg = ""; | |
546 | gcc_assert (arg != NULL); | |
547 | } | |
2d2bd949 JM |
548 | else |
549 | gcc_assert (arg == NULL); | |
550 | } | |
5de8299c | 551 | |
2d2bd949 JM |
552 | /* Recheck for warnings and disabled options. */ |
553 | if (option->warn_message) | |
554 | { | |
555 | gcc_assert (warn_message == NULL); | |
556 | warn_message = option->warn_message; | |
557 | } | |
558 | if (option->flags & CL_DISABLED) | |
559 | errors |= CL_ERR_DISABLED; | |
560 | } | |
5de8299c JM |
561 | } |
562 | ||
5d4b393f | 563 | /* Check if this is a switch for a different front end. */ |
d9d16a19 | 564 | if (!option_ok_for_language (option, lang_mask)) |
5d4b393f | 565 | errors |= CL_ERR_WRONG_LANG; |
5d4b393f | 566 | |
5d4b393f JM |
567 | /* If the switch takes an integer, convert it. */ |
568 | if (arg && (option->flags & CL_UINTEGER)) | |
569 | { | |
570 | value = integral_argument (arg); | |
571 | if (value == -1) | |
572 | errors |= CL_ERR_UINT_ARG; | |
573 | } | |
574 | ||
e6d4b984 JM |
575 | /* If the switch takes an enumerated argument, convert it. */ |
576 | if (arg && (option->var_type == CLVC_ENUM)) | |
577 | { | |
578 | const struct cl_enum *e = &cl_enums[option->var_enum]; | |
579 | ||
580 | gcc_assert (value == 1); | |
581 | if (enum_arg_to_value (e->values, arg, &value, lang_mask)) | |
582 | { | |
583 | const char *carg = NULL; | |
584 | ||
585 | if (enum_value_to_arg (e->values, &carg, value, lang_mask)) | |
586 | arg = carg; | |
587 | gcc_assert (carg != NULL); | |
588 | } | |
589 | else | |
590 | errors |= CL_ERR_ENUM_ARG; | |
591 | } | |
592 | ||
5d4b393f | 593 | done: |
5d4b393f JM |
594 | decoded->opt_index = opt_index; |
595 | decoded->arg = arg; | |
596 | decoded->value = value; | |
597 | decoded->errors = errors; | |
2d2bd949 | 598 | decoded->warn_message = warn_message; |
eea13ead JM |
599 | |
600 | if (opt_index == OPT_SPECIAL_unknown) | |
c243beb0 | 601 | gcc_assert (result == 1); |
eea13ead JM |
602 | |
603 | gcc_assert (result >= 1 && result <= ARRAY_SIZE (decoded->canonical_option)); | |
604 | decoded->canonical_option_num_elements = result; | |
605 | total_len = 0; | |
606 | for (i = 0; i < ARRAY_SIZE (decoded->canonical_option); i++) | |
607 | { | |
608 | if (i < result) | |
609 | { | |
7fcf46f5 | 610 | size_t len; |
5de8299c JM |
611 | if (opt_index == OPT_SPECIAL_unknown) |
612 | decoded->canonical_option[i] = argv[i]; | |
613 | else | |
614 | decoded->canonical_option[i] = NULL; | |
7fcf46f5 JZ |
615 | len = strlen (argv[i]); |
616 | /* If the argument is an empty string, we will print it as "" in | |
617 | orig_option_with_args_text. */ | |
618 | total_len += (len != 0 ? len : 2) + 1; | |
eea13ead JM |
619 | } |
620 | else | |
621 | decoded->canonical_option[i] = NULL; | |
622 | } | |
2d2bd949 | 623 | if (opt_index != OPT_SPECIAL_unknown && opt_index != OPT_SPECIAL_ignore) |
c243beb0 JM |
624 | { |
625 | generate_canonical_option (opt_index, arg, value, decoded); | |
626 | if (separate_args > 1) | |
627 | { | |
628 | for (i = 0; i < separate_args; i++) | |
629 | { | |
630 | if (argv[extra_args + 1 + i] == NULL) | |
631 | break; | |
632 | else | |
633 | decoded->canonical_option[1 + i] = argv[extra_args + 1 + i]; | |
634 | } | |
635 | gcc_assert (result == 1 + i); | |
636 | decoded->canonical_option_num_elements = result; | |
637 | } | |
638 | } | |
eea13ead JM |
639 | decoded->orig_option_with_args_text = p = XNEWVEC (char, total_len); |
640 | for (i = 0; i < result; i++) | |
641 | { | |
642 | size_t len = strlen (argv[i]); | |
643 | ||
7fcf46f5 JZ |
644 | /* Print the empty string verbally. */ |
645 | if (len == 0) | |
646 | { | |
647 | *p++ = '"'; | |
648 | *p++ = '"'; | |
649 | } | |
650 | else | |
651 | memcpy (p, argv[i], len); | |
eea13ead JM |
652 | p += len; |
653 | if (i == result - 1) | |
654 | *p++ = 0; | |
655 | else | |
656 | *p++ = ' '; | |
657 | } | |
658 | ||
5d4b393f JM |
659 | return result; |
660 | } | |
661 | ||
6e2f1956 JM |
662 | /* Decode command-line options (ARGC and ARGV being the arguments of |
663 | main) into an array, setting *DECODED_OPTIONS to a pointer to that | |
664 | array and *DECODED_OPTIONS_COUNT to the number of entries in the | |
665 | array. The first entry in the array is always one for the program | |
666 | name (OPT_SPECIAL_program_name). LANG_MASK indicates the language | |
603349bf JM |
667 | flags applicable for decoding (including CL_COMMON and CL_TARGET if |
668 | those options should be considered applicable). Do not produce any | |
669 | diagnostics or set state outside of these variables. */ | |
6e2f1956 JM |
670 | |
671 | void | |
672 | decode_cmdline_options_to_array (unsigned int argc, const char **argv, | |
673 | unsigned int lang_mask, | |
674 | struct cl_decoded_option **decoded_options, | |
675 | unsigned int *decoded_options_count) | |
676 | { | |
2be55a25 | 677 | unsigned int n, i; |
6e2f1956 JM |
678 | struct cl_decoded_option *opt_array; |
679 | unsigned int num_decoded_options; | |
e200444e | 680 | bool argv_copied = false; |
6e2f1956 JM |
681 | |
682 | opt_array = XNEWVEC (struct cl_decoded_option, argc); | |
683 | ||
684 | opt_array[0].opt_index = OPT_SPECIAL_program_name; | |
2d2bd949 | 685 | opt_array[0].warn_message = NULL; |
6e2f1956 JM |
686 | opt_array[0].arg = argv[0]; |
687 | opt_array[0].orig_option_with_args_text = argv[0]; | |
eea13ead | 688 | opt_array[0].canonical_option_num_elements = 1; |
7a9bf9a4 JM |
689 | opt_array[0].canonical_option[0] = argv[0]; |
690 | opt_array[0].canonical_option[1] = NULL; | |
eea13ead JM |
691 | opt_array[0].canonical_option[2] = NULL; |
692 | opt_array[0].canonical_option[3] = NULL; | |
6e2f1956 JM |
693 | opt_array[0].value = 1; |
694 | opt_array[0].errors = 0; | |
695 | num_decoded_options = 1; | |
696 | ||
697 | for (i = 1; i < argc; i += n) | |
698 | { | |
699 | const char *opt = argv[i]; | |
700 | ||
701 | /* Interpret "-" or a non-switch as a file name. */ | |
702 | if (opt[0] != '-' || opt[1] == '\0') | |
703 | { | |
d9d16a19 | 704 | generate_option_input_file (opt, &opt_array[num_decoded_options]); |
6e2f1956 JM |
705 | num_decoded_options++; |
706 | n = 1; | |
707 | continue; | |
708 | } | |
709 | ||
710 | n = decode_cmdline_option (argv + i, lang_mask, | |
711 | &opt_array[num_decoded_options]); | |
712 | num_decoded_options++; | |
713 | } | |
714 | ||
e200444e JM |
715 | if (argv_copied) |
716 | free (argv); | |
6e2f1956 JM |
717 | *decoded_options = opt_array; |
718 | *decoded_options_count = num_decoded_options; | |
60cf253a | 719 | prune_options (decoded_options, decoded_options_count); |
6e2f1956 JM |
720 | } |
721 | ||
14c7833c L |
722 | /* Return true if NEXT_OPT_IDX cancels OPT_IDX. Return false if the |
723 | next one is the same as ORIG_NEXT_OPT_IDX. */ | |
724 | ||
725 | static bool | |
726 | cancel_option (int opt_idx, int next_opt_idx, int orig_next_opt_idx) | |
727 | { | |
728 | /* An option can be canceled by the same option or an option with | |
729 | Negative. */ | |
730 | if (cl_options [next_opt_idx].neg_index == opt_idx) | |
731 | return true; | |
732 | ||
733 | if (cl_options [next_opt_idx].neg_index != orig_next_opt_idx) | |
734 | return cancel_option (opt_idx, cl_options [next_opt_idx].neg_index, | |
735 | orig_next_opt_idx); | |
b8698a0f | 736 | |
14c7833c L |
737 | return false; |
738 | } | |
739 | ||
740 | /* Filter out options canceled by the ones after them. */ | |
741 | ||
60cf253a JM |
742 | static void |
743 | prune_options (struct cl_decoded_option **decoded_options, | |
744 | unsigned int *decoded_options_count) | |
14c7833c | 745 | { |
60cf253a JM |
746 | unsigned int old_decoded_options_count = *decoded_options_count; |
747 | struct cl_decoded_option *old_decoded_options = *decoded_options; | |
748 | unsigned int new_decoded_options_count; | |
749 | struct cl_decoded_option *new_decoded_options | |
750 | = XNEWVEC (struct cl_decoded_option, old_decoded_options_count); | |
751 | unsigned int i; | |
14c7833c | 752 | const struct cl_option *option; |
14c7833c L |
753 | |
754 | /* Remove arguments which are negated by others after them. */ | |
60cf253a JM |
755 | new_decoded_options_count = 0; |
756 | for (i = 0; i < old_decoded_options_count; i++) | |
14c7833c | 757 | { |
60cf253a JM |
758 | unsigned int j, opt_idx, next_opt_idx; |
759 | ||
760 | if (old_decoded_options[i].errors & ~CL_ERR_WRONG_LANG) | |
761 | goto keep; | |
14c7833c | 762 | |
60cf253a JM |
763 | opt_idx = old_decoded_options[i].opt_index; |
764 | switch (opt_idx) | |
14c7833c | 765 | { |
60cf253a JM |
766 | case OPT_SPECIAL_unknown: |
767 | case OPT_SPECIAL_ignore: | |
768 | case OPT_SPECIAL_program_name: | |
769 | case OPT_SPECIAL_input_file: | |
770 | goto keep; | |
771 | ||
772 | default: | |
773 | gcc_assert (opt_idx < cl_options_count); | |
774 | option = &cl_options[opt_idx]; | |
775 | if (option->neg_index < 0) | |
776 | goto keep; | |
777 | ||
778 | /* Skip joined switches. */ | |
779 | if ((option->flags & CL_JOINED)) | |
780 | goto keep; | |
781 | ||
782 | for (j = i + 1; j < old_decoded_options_count; j++) | |
14c7833c | 783 | { |
60cf253a JM |
784 | if (old_decoded_options[j].errors & ~CL_ERR_WRONG_LANG) |
785 | continue; | |
786 | next_opt_idx = old_decoded_options[j].opt_index; | |
787 | if (next_opt_idx >= cl_options_count) | |
788 | continue; | |
789 | if (cl_options[next_opt_idx].neg_index < 0) | |
790 | continue; | |
791 | if ((cl_options[next_opt_idx].flags & CL_JOINED)) | |
792 | continue; | |
793 | if (cancel_option (opt_idx, next_opt_idx, next_opt_idx)) | |
14c7833c L |
794 | break; |
795 | } | |
60cf253a JM |
796 | if (j == old_decoded_options_count) |
797 | { | |
14c7833c | 798 | keep: |
60cf253a JM |
799 | new_decoded_options[new_decoded_options_count] |
800 | = old_decoded_options[i]; | |
801 | new_decoded_options_count++; | |
802 | } | |
803 | break; | |
14c7833c L |
804 | } |
805 | } | |
806 | ||
60cf253a JM |
807 | free (old_decoded_options); |
808 | new_decoded_options = XRESIZEVEC (struct cl_decoded_option, | |
809 | new_decoded_options, | |
810 | new_decoded_options_count); | |
811 | *decoded_options = new_decoded_options; | |
812 | *decoded_options_count = new_decoded_options_count; | |
14c7833c | 813 | } |
5f20c657 | 814 | |
481e1176 | 815 | /* Handle option DECODED for the language indicated by LANG_MASK, |
d4d24ba4 JM |
816 | using the handlers in HANDLERS and setting fields in OPTS and |
817 | OPTS_SET. KIND is the diagnostic_t if this is a diagnostics | |
a4d8c676 JM |
818 | option, DK_UNSPECIFIED otherwise, and LOC is the location of the |
819 | option for options from the source file, UNKNOWN_LOCATION | |
820 | otherwise. GENERATED_P is true for an option generated as part of | |
821 | processing another option or otherwise generated internally, false | |
822 | for one explicitly passed by the user. Returns false if the switch | |
823 | was invalid. DC is the diagnostic context for options affecting | |
824 | diagnostics state, or NULL. */ | |
5f20c657 | 825 | |
a4d8c676 | 826 | static bool |
46625112 | 827 | handle_option (struct gcc_options *opts, |
d4d24ba4 | 828 | struct gcc_options *opts_set, |
46625112 | 829 | const struct cl_decoded_option *decoded, |
a4d8c676 | 830 | unsigned int lang_mask, int kind, location_t loc, |
d4d24ba4 | 831 | const struct cl_option_handlers *handlers, |
1ebe4b4f | 832 | bool generated_p, diagnostic_context *dc) |
5f20c657 | 833 | { |
481e1176 JM |
834 | size_t opt_index = decoded->opt_index; |
835 | const char *arg = decoded->arg; | |
836 | int value = decoded->value; | |
5f20c657 | 837 | const struct cl_option *option = &cl_options[opt_index]; |
46625112 | 838 | void *flag_var = option_flag_var (opt_index, opts); |
5f20c657 JM |
839 | size_t i; |
840 | ||
46625112 | 841 | if (flag_var) |
d4d24ba4 | 842 | set_option (opts, (generated_p ? NULL : opts_set), |
a4d8c676 | 843 | opt_index, value, arg, kind, loc, dc); |
5f20c657 JM |
844 | |
845 | for (i = 0; i < handlers->num_handlers; i++) | |
846 | if (option->flags & handlers->handlers[i].mask) | |
847 | { | |
d4d24ba4 | 848 | if (!handlers->handlers[i].handler (opts, opts_set, decoded, |
a4d8c676 JM |
849 | lang_mask, kind, loc, |
850 | handlers, dc)) | |
5f20c657 JM |
851 | return false; |
852 | else | |
481e1176 | 853 | handlers->post_handling_callback (decoded, |
5f20c657 JM |
854 | handlers->handlers[i].mask); |
855 | } | |
856 | ||
857 | return true; | |
858 | } | |
859 | ||
481e1176 JM |
860 | /* Like handle_option, but OPT_INDEX, ARG and VALUE describe the |
861 | option instead of DECODED. This is used for callbacks when one | |
862 | option implies another instead of an option being decoded from the | |
863 | command line. */ | |
864 | ||
865 | bool | |
d4d24ba4 JM |
866 | handle_generated_option (struct gcc_options *opts, |
867 | struct gcc_options *opts_set, | |
868 | size_t opt_index, const char *arg, int value, | |
a4d8c676 | 869 | unsigned int lang_mask, int kind, location_t loc, |
1ebe4b4f JM |
870 | const struct cl_option_handlers *handlers, |
871 | diagnostic_context *dc) | |
481e1176 | 872 | { |
481e1176 JM |
873 | struct cl_decoded_option decoded; |
874 | ||
d9d16a19 | 875 | generate_option (opt_index, arg, value, lang_mask, &decoded); |
a4d8c676 JM |
876 | return handle_option (opts, opts_set, &decoded, lang_mask, kind, loc, |
877 | handlers, true, dc); | |
d9d16a19 JM |
878 | } |
879 | ||
880 | /* Fill in *DECODED with an option described by OPT_INDEX, ARG and | |
881 | VALUE for a front end using LANG_MASK. This is used when the | |
882 | compiler generates options internally. */ | |
883 | ||
884 | void | |
885 | generate_option (size_t opt_index, const char *arg, int value, | |
886 | unsigned int lang_mask, struct cl_decoded_option *decoded) | |
887 | { | |
888 | const struct cl_option *option = &cl_options[opt_index]; | |
889 | ||
890 | decoded->opt_index = opt_index; | |
2d2bd949 | 891 | decoded->warn_message = NULL; |
d9d16a19 | 892 | decoded->arg = arg; |
d9d16a19 JM |
893 | decoded->value = value; |
894 | decoded->errors = (option_ok_for_language (option, lang_mask) | |
895 | ? 0 | |
896 | : CL_ERR_WRONG_LANG); | |
481e1176 | 897 | |
5de8299c JM |
898 | generate_canonical_option (opt_index, arg, value, decoded); |
899 | switch (decoded->canonical_option_num_elements) | |
481e1176 | 900 | { |
5de8299c JM |
901 | case 1: |
902 | decoded->orig_option_with_args_text = decoded->canonical_option[0]; | |
903 | break; | |
904 | ||
905 | case 2: | |
906 | decoded->orig_option_with_args_text | |
907 | = concat (decoded->canonical_option[0], " ", | |
908 | decoded->canonical_option[1], NULL); | |
909 | break; | |
910 | ||
911 | default: | |
912 | gcc_unreachable (); | |
481e1176 | 913 | } |
d9d16a19 | 914 | } |
481e1176 | 915 | |
d9d16a19 JM |
916 | /* Fill in *DECODED with an option for input file FILE. */ |
917 | ||
918 | void | |
919 | generate_option_input_file (const char *file, | |
920 | struct cl_decoded_option *decoded) | |
921 | { | |
922 | decoded->opt_index = OPT_SPECIAL_input_file; | |
2d2bd949 | 923 | decoded->warn_message = NULL; |
d9d16a19 JM |
924 | decoded->arg = file; |
925 | decoded->orig_option_with_args_text = file; | |
926 | decoded->canonical_option_num_elements = 1; | |
927 | decoded->canonical_option[0] = file; | |
928 | decoded->canonical_option[1] = NULL; | |
929 | decoded->canonical_option[2] = NULL; | |
930 | decoded->canonical_option[3] = NULL; | |
931 | decoded->value = 1; | |
932 | decoded->errors = 0; | |
481e1176 JM |
933 | } |
934 | ||
a4d8c676 JM |
935 | /* Handle the switch DECODED (location LOC) for the language indicated |
936 | by LANG_MASK, using the handlers in *HANDLERS and setting fields in | |
937 | OPTS and OPTS_SET and using diagnostic context DC (if not NULL) for | |
1ebe4b4f | 938 | diagnostic options. */ |
5f20c657 JM |
939 | |
940 | void | |
46625112 | 941 | read_cmdline_option (struct gcc_options *opts, |
d4d24ba4 | 942 | struct gcc_options *opts_set, |
46625112 | 943 | struct cl_decoded_option *decoded, |
a4d8c676 | 944 | location_t loc, |
5f20c657 | 945 | unsigned int lang_mask, |
1ebe4b4f JM |
946 | const struct cl_option_handlers *handlers, |
947 | diagnostic_context *dc) | |
5f20c657 JM |
948 | { |
949 | const struct cl_option *option; | |
2d2bd949 JM |
950 | const char *opt = decoded->orig_option_with_args_text; |
951 | ||
952 | if (decoded->warn_message) | |
a4d8c676 | 953 | warning_at (loc, 0, decoded->warn_message, opt); |
5f20c657 JM |
954 | |
955 | if (decoded->opt_index == OPT_SPECIAL_unknown) | |
956 | { | |
481e1176 | 957 | if (handlers->unknown_option_callback (decoded)) |
a4d8c676 | 958 | error_at (loc, "unrecognized command line option %qs", decoded->arg); |
5f20c657 JM |
959 | return; |
960 | } | |
961 | ||
2d2bd949 JM |
962 | if (decoded->opt_index == OPT_SPECIAL_ignore) |
963 | return; | |
964 | ||
5f20c657 | 965 | option = &cl_options[decoded->opt_index]; |
5f20c657 JM |
966 | |
967 | if (decoded->errors & CL_ERR_DISABLED) | |
968 | { | |
a4d8c676 JM |
969 | error_at (loc, "command line option %qs" |
970 | " is not supported by this configuration", opt); | |
5f20c657 JM |
971 | return; |
972 | } | |
973 | ||
5f20c657 JM |
974 | if (decoded->errors & CL_ERR_MISSING_ARG) |
975 | { | |
976 | if (option->missing_argument_error) | |
a4d8c676 | 977 | error_at (loc, option->missing_argument_error, opt); |
5f20c657 | 978 | else |
a4d8c676 | 979 | error_at (loc, "missing argument to %qs", opt); |
5f20c657 JM |
980 | return; |
981 | } | |
982 | ||
983 | if (decoded->errors & CL_ERR_UINT_ARG) | |
984 | { | |
a4d8c676 JM |
985 | error_at (loc, "argument to %qs should be a non-negative integer", |
986 | option->opt_text); | |
5f20c657 JM |
987 | return; |
988 | } | |
989 | ||
e6d4b984 JM |
990 | if (decoded->errors & CL_ERR_ENUM_ARG) |
991 | { | |
992 | const struct cl_enum *e = &cl_enums[option->var_enum]; | |
993 | unsigned int i; | |
994 | size_t len; | |
995 | char *s, *p; | |
996 | ||
997 | if (e->unknown_error) | |
998 | error_at (loc, e->unknown_error, decoded->arg); | |
999 | else | |
1000 | error_at (loc, "unrecognized argument in option %qs", opt); | |
1001 | ||
1002 | len = 0; | |
1003 | for (i = 0; e->values[i].arg != NULL; i++) | |
1004 | len += strlen (e->values[i].arg) + 1; | |
1005 | ||
1006 | s = XALLOCAVEC (char, len); | |
1007 | p = s; | |
1008 | for (i = 0; e->values[i].arg != NULL; i++) | |
1009 | { | |
1010 | size_t arglen = strlen (e->values[i].arg); | |
1011 | memcpy (p, e->values[i].arg, arglen); | |
1012 | p[arglen] = ' '; | |
1013 | p += arglen + 1; | |
1014 | } | |
1015 | p[-1] = 0; | |
1016 | inform (loc, "valid arguments to %qs are: %s", option->opt_text, s); | |
1017 | return; | |
1018 | } | |
1019 | ||
4df47bca JM |
1020 | if (decoded->errors & CL_ERR_WRONG_LANG) |
1021 | { | |
1022 | handlers->wrong_lang_callback (decoded, lang_mask); | |
1023 | return; | |
1024 | } | |
1025 | ||
5f20c657 JM |
1026 | gcc_assert (!decoded->errors); |
1027 | ||
d4d24ba4 | 1028 | if (!handle_option (opts, opts_set, decoded, lang_mask, DK_UNSPECIFIED, |
a4d8c676 JM |
1029 | loc, handlers, false, dc)) |
1030 | error_at (loc, "unrecognized command line option %qs", opt); | |
5f20c657 JM |
1031 | } |
1032 | ||
d4d24ba4 | 1033 | /* Set any field in OPTS, and OPTS_SET if not NULL, for option |
a4d8c676 JM |
1034 | OPT_INDEX according to VALUE and ARG, diagnostic kind KIND, |
1035 | location LOC, using diagnostic context DC if not NULL for | |
1036 | diagnostic classification. */ | |
5f20c657 JM |
1037 | |
1038 | void | |
d4d24ba4 | 1039 | set_option (struct gcc_options *opts, struct gcc_options *opts_set, |
1ebe4b4f | 1040 | int opt_index, int value, const char *arg, int kind, |
a4d8c676 | 1041 | location_t loc, diagnostic_context *dc) |
5f20c657 JM |
1042 | { |
1043 | const struct cl_option *option = &cl_options[opt_index]; | |
46625112 | 1044 | void *flag_var = option_flag_var (opt_index, opts); |
d4d24ba4 | 1045 | void *set_flag_var = NULL; |
5f20c657 | 1046 | |
46625112 | 1047 | if (!flag_var) |
5f20c657 JM |
1048 | return; |
1049 | ||
d4d24ba4 JM |
1050 | if (opts_set != NULL) |
1051 | set_flag_var = option_flag_var (opt_index, opts_set); | |
1052 | ||
5f20c657 JM |
1053 | switch (option->var_type) |
1054 | { | |
1055 | case CLVC_BOOLEAN: | |
46625112 | 1056 | *(int *) flag_var = value; |
d4d24ba4 JM |
1057 | if (set_flag_var) |
1058 | *(int *) set_flag_var = 1; | |
5f20c657 JM |
1059 | break; |
1060 | ||
1061 | case CLVC_EQUAL: | |
46625112 JM |
1062 | *(int *) flag_var = (value |
1063 | ? option->var_value | |
1064 | : !option->var_value); | |
d4d24ba4 JM |
1065 | if (set_flag_var) |
1066 | *(int *) set_flag_var = 1; | |
5f20c657 JM |
1067 | break; |
1068 | ||
1069 | case CLVC_BIT_CLEAR: | |
1070 | case CLVC_BIT_SET: | |
1071 | if ((value != 0) == (option->var_type == CLVC_BIT_SET)) | |
46625112 | 1072 | *(int *) flag_var |= option->var_value; |
5f20c657 | 1073 | else |
46625112 | 1074 | *(int *) flag_var &= ~option->var_value; |
d4d24ba4 JM |
1075 | if (set_flag_var) |
1076 | *(int *) set_flag_var |= option->var_value; | |
5f20c657 JM |
1077 | break; |
1078 | ||
1079 | case CLVC_STRING: | |
46625112 | 1080 | *(const char **) flag_var = arg; |
d4d24ba4 JM |
1081 | if (set_flag_var) |
1082 | *(const char **) set_flag_var = ""; | |
5f20c657 | 1083 | break; |
21bf1558 | 1084 | |
e6d4b984 JM |
1085 | case CLVC_ENUM: |
1086 | { | |
1087 | const struct cl_enum *e = &cl_enums[option->var_enum]; | |
1088 | ||
1089 | e->set (flag_var, value); | |
1090 | if (set_flag_var) | |
1091 | e->set (set_flag_var, 1); | |
1092 | } | |
1093 | break; | |
1094 | ||
21bf1558 JM |
1095 | case CLVC_DEFER: |
1096 | { | |
1097 | VEC(cl_deferred_option,heap) *vec | |
1098 | = (VEC(cl_deferred_option,heap) *) *(void **) flag_var; | |
1099 | cl_deferred_option *p; | |
1100 | ||
1101 | p = VEC_safe_push (cl_deferred_option, heap, vec, NULL); | |
1102 | p->opt_index = opt_index; | |
1103 | p->arg = arg; | |
1104 | p->value = value; | |
1105 | *(void **) flag_var = vec; | |
1106 | if (set_flag_var) | |
1107 | *(void **) set_flag_var = vec; | |
1108 | } | |
1109 | break; | |
5f20c657 JM |
1110 | } |
1111 | ||
1ebe4b4f JM |
1112 | if ((diagnostic_t) kind != DK_UNSPECIFIED |
1113 | && dc != NULL) | |
a4d8c676 | 1114 | diagnostic_classify_diagnostic (dc, opt_index, (diagnostic_t) kind, loc); |
5f20c657 | 1115 | } |
46625112 JM |
1116 | |
1117 | /* Return the address of the flag variable for option OPT_INDEX in | |
1118 | options structure OPTS, or NULL if there is no flag variable. */ | |
1119 | ||
1120 | void * | |
1121 | option_flag_var (int opt_index, struct gcc_options *opts) | |
1122 | { | |
1123 | const struct cl_option *option = &cl_options[opt_index]; | |
1124 | ||
1125 | if (option->flag_var_offset == (unsigned short) -1) | |
1126 | return NULL; | |
1127 | return (void *)(((char *) opts) + option->flag_var_offset); | |
1128 | } | |
c5fa0890 | 1129 | |
c98cd5bf JM |
1130 | /* Return 1 if option OPT_IDX is enabled in OPTS, 0 if it is disabled, |
1131 | or -1 if it isn't a simple on-off switch. */ | |
1132 | ||
1133 | int | |
1134 | option_enabled (int opt_idx, void *opts) | |
1135 | { | |
1136 | const struct cl_option *option = &(cl_options[opt_idx]); | |
1137 | struct gcc_options *optsg = (struct gcc_options *) opts; | |
1138 | void *flag_var = option_flag_var (opt_idx, optsg); | |
1139 | ||
1140 | if (flag_var) | |
1141 | switch (option->var_type) | |
1142 | { | |
1143 | case CLVC_BOOLEAN: | |
1144 | return *(int *) flag_var != 0; | |
1145 | ||
1146 | case CLVC_EQUAL: | |
1147 | return *(int *) flag_var == option->var_value; | |
1148 | ||
1149 | case CLVC_BIT_CLEAR: | |
1150 | return (*(int *) flag_var & option->var_value) == 0; | |
1151 | ||
1152 | case CLVC_BIT_SET: | |
1153 | return (*(int *) flag_var & option->var_value) != 0; | |
1154 | ||
1155 | case CLVC_STRING: | |
e6d4b984 | 1156 | case CLVC_ENUM: |
c98cd5bf JM |
1157 | case CLVC_DEFER: |
1158 | break; | |
1159 | } | |
1160 | return -1; | |
1161 | } | |
1162 | ||
1163 | /* Fill STATE with the current state of option OPTION in OPTS. Return | |
1164 | true if there is some state to store. */ | |
1165 | ||
1166 | bool | |
1167 | get_option_state (struct gcc_options *opts, int option, | |
1168 | struct cl_option_state *state) | |
1169 | { | |
1170 | void *flag_var = option_flag_var (option, opts); | |
1171 | ||
1172 | if (flag_var == 0) | |
1173 | return false; | |
1174 | ||
1175 | switch (cl_options[option].var_type) | |
1176 | { | |
1177 | case CLVC_BOOLEAN: | |
1178 | case CLVC_EQUAL: | |
1179 | state->data = flag_var; | |
1180 | state->size = sizeof (int); | |
1181 | break; | |
1182 | ||
1183 | case CLVC_BIT_CLEAR: | |
1184 | case CLVC_BIT_SET: | |
1185 | state->ch = option_enabled (option, opts); | |
1186 | state->data = &state->ch; | |
1187 | state->size = 1; | |
1188 | break; | |
1189 | ||
1190 | case CLVC_STRING: | |
1191 | state->data = *(const char **) flag_var; | |
1192 | if (state->data == 0) | |
1193 | state->data = ""; | |
1194 | state->size = strlen ((const char *) state->data) + 1; | |
1195 | break; | |
1196 | ||
e6d4b984 JM |
1197 | case CLVC_ENUM: |
1198 | state->data = flag_var; | |
1199 | state->size = cl_enums[cl_options[option].var_enum].var_size; | |
1200 | break; | |
1201 | ||
c98cd5bf JM |
1202 | case CLVC_DEFER: |
1203 | return false; | |
1204 | } | |
1205 | return true; | |
1206 | } | |
1207 | ||
c5fa0890 JM |
1208 | /* Set a warning option OPT_INDEX (language mask LANG_MASK, option |
1209 | handlers HANDLERS) to have diagnostic kind KIND for option | |
1210 | structures OPTS and OPTS_SET and diagnostic context DC (possibly | |
1211 | NULL), at location LOC (UNKNOWN_LOCATION for -Werror=). If IMPLY, | |
1212 | the warning option in question is implied at this point. This is | |
1213 | used by -Werror= and #pragma GCC diagnostic. */ | |
1214 | ||
1215 | void | |
1216 | control_warning_option (unsigned int opt_index, int kind, bool imply, | |
1217 | location_t loc, unsigned int lang_mask, | |
1218 | const struct cl_option_handlers *handlers, | |
1219 | struct gcc_options *opts, | |
1220 | struct gcc_options *opts_set, | |
1221 | diagnostic_context *dc) | |
1222 | { | |
1223 | if (cl_options[opt_index].alias_target != N_OPTS) | |
1224 | opt_index = cl_options[opt_index].alias_target; | |
1225 | if (opt_index == OPT_SPECIAL_ignore) | |
1226 | return; | |
1227 | if (dc) | |
1228 | diagnostic_classify_diagnostic (dc, opt_index, (diagnostic_t) kind, loc); | |
1229 | if (imply) | |
1230 | { | |
1231 | /* -Werror=foo implies -Wfoo. */ | |
1232 | if (cl_options[opt_index].var_type == CLVC_BOOLEAN) | |
1233 | handle_generated_option (opts, opts_set, | |
1234 | opt_index, NULL, 1, lang_mask, | |
1235 | kind, loc, handlers, dc); | |
1236 | } | |
1237 | } |