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a1baa5f1 | 1 | /* Command line option handling. |
fbd26352 | 2 | Copyright (C) 2006-2019 Free Software Foundation, Inc. |
a1baa5f1 | 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 | |
8c4c00c1 | 8 | Software Foundation; either version 3, or (at your option) any later |
a1baa5f1 | 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 | |
8c4c00c1 | 17 | along with GCC; see the file COPYING3. If not see |
18 | <http://www.gnu.org/licenses/>. */ | |
a1baa5f1 | 19 | |
20 | #include "config.h" | |
21 | #include "system.h" | |
22 | #include "intl.h" | |
23 | #include "coretypes.h" | |
24 | #include "opts.h" | |
1eacc14a | 25 | #include "options.h" |
b78351e5 | 26 | #include "diagnostic.h" |
56f34f03 | 27 | #include "spellcheck.h" |
a1baa5f1 | 28 | |
e62df35b | 29 | static void prune_options (struct cl_decoded_option **, unsigned int *); |
30 | ||
a1408eb3 | 31 | /* An option that is undocumented, that takes a joined argument, and |
32 | that doesn't fit any of the classes of uses (language/common, | |
33 | driver, target) is assumed to be a prefix used to catch | |
34 | e.g. negated options, and stop them from being further shortened to | |
35 | a prefix that could use the negated option as an argument. For | |
36 | example, we want -gno-statement-frontiers to be taken as a negation | |
37 | of -gstatement-frontiers, but without catching the gno- prefix and | |
38 | signaling it's to be used for option remapping, it would end up | |
39 | backtracked to g with no-statemnet-frontiers as the debug level. */ | |
40 | ||
41 | static bool | |
42 | remapping_prefix_p (const struct cl_option *opt) | |
43 | { | |
44 | return opt->flags & CL_UNDOCUMENTED | |
45 | && opt->flags & CL_JOINED | |
46 | && !(opt->flags & (CL_DRIVER | CL_TARGET | CL_COMMON | CL_LANG_ALL)); | |
47 | } | |
48 | ||
a1baa5f1 | 49 | /* Perform a binary search to find which option the command-line INPUT |
615ef0bb | 50 | matches. Returns its index in the option array, and |
51 | OPT_SPECIAL_unknown on failure. | |
a1baa5f1 | 52 | |
53 | This routine is quite subtle. A normal binary search is not good | |
54 | enough because some options can be suffixed with an argument, and | |
55 | multiple sub-matches can occur, e.g. input of "-pedantic" matching | |
56 | the initial substring of "-pedantic-errors". | |
57 | ||
58 | A more complicated example is -gstabs. It should match "-g" with | |
59 | an argument of "stabs". Suppose, however, that the number and list | |
60 | of switches are such that the binary search tests "-gen-decls" | |
61 | before having tested "-g". This doesn't match, and as "-gen-decls" | |
62 | is less than "-gstabs", it will become the lower bound of the | |
63 | binary search range, and "-g" will never be seen. To resolve this | |
30b0f428 | 64 | issue, 'optc-gen.awk' makes "-gen-decls" point, via the back_chain member, |
a1baa5f1 | 65 | to "-g" so that failed searches that end between "-gen-decls" and |
66 | the lexicographically subsequent switch know to go back and see if | |
67 | "-g" causes a match (which it does in this example). | |
68 | ||
69 | This search is done in such a way that the longest match for the | |
70 | front end in question wins. If there is no match for the current | |
71 | front end, the longest match for a different front end is returned | |
72 | (or N_OPTS if none) and the caller emits an error message. */ | |
73 | size_t | |
607eb2c8 | 74 | find_opt (const char *input, unsigned int lang_mask) |
a1baa5f1 | 75 | { |
5789e05b | 76 | size_t mn, mn_orig, mx, md, opt_len; |
a1baa5f1 | 77 | size_t match_wrong_lang; |
78 | int comp; | |
79 | ||
80 | mn = 0; | |
81 | mx = cl_options_count; | |
82 | ||
83 | /* Find mn such this lexicographical inequality holds: | |
84 | cl_options[mn] <= input < cl_options[mn + 1]. */ | |
85 | while (mx - mn > 1) | |
86 | { | |
87 | md = (mn + mx) / 2; | |
88 | opt_len = cl_options[md].opt_len; | |
89 | comp = strncmp (input, cl_options[md].opt_text + 1, opt_len); | |
90 | ||
91 | if (comp < 0) | |
92 | mx = md; | |
93 | else | |
94 | mn = md; | |
95 | } | |
96 | ||
5789e05b | 97 | mn_orig = mn; |
98 | ||
a1baa5f1 | 99 | /* This is the switch that is the best match but for a different |
615ef0bb | 100 | front end, or OPT_SPECIAL_unknown if there is no match at all. */ |
101 | match_wrong_lang = OPT_SPECIAL_unknown; | |
a1baa5f1 | 102 | |
103 | /* Backtrace the chain of possible matches, returning the longest | |
104 | one, if any, that fits best. With current GCC switches, this | |
105 | loop executes at most twice. */ | |
106 | do | |
107 | { | |
108 | const struct cl_option *opt = &cl_options[mn]; | |
109 | ||
110 | /* Is the input either an exact match or a prefix that takes a | |
111 | joined argument? */ | |
112 | if (!strncmp (input, opt->opt_text + 1, opt->opt_len) | |
113 | && (input[opt->opt_len] == '\0' || (opt->flags & CL_JOINED))) | |
114 | { | |
115 | /* If language is OK, return it. */ | |
116 | if (opt->flags & lang_mask) | |
117 | return mn; | |
118 | ||
a1408eb3 | 119 | if (remapping_prefix_p (opt)) |
120 | return OPT_SPECIAL_unknown; | |
121 | ||
a1baa5f1 | 122 | /* If we haven't remembered a prior match, remember this |
123 | one. Any prior match is necessarily better. */ | |
615ef0bb | 124 | if (match_wrong_lang == OPT_SPECIAL_unknown) |
a1baa5f1 | 125 | match_wrong_lang = mn; |
126 | } | |
127 | ||
128 | /* Try the next possibility. This is cl_options_count if there | |
129 | are no more. */ | |
130 | mn = opt->back_chain; | |
131 | } | |
132 | while (mn != cl_options_count); | |
133 | ||
5789e05b | 134 | if (match_wrong_lang == OPT_SPECIAL_unknown && input[0] == '-') |
135 | { | |
136 | /* Long options, starting "--", may be abbreviated if the | |
137 | abbreviation is unambiguous. This only applies to options | |
138 | not taking a joined argument, and abbreviations of "--option" | |
139 | are permitted even if there is a variant "--option=". */ | |
140 | size_t mnc = mn_orig + 1; | |
141 | size_t cmp_len = strlen (input); | |
142 | while (mnc < cl_options_count | |
143 | && strncmp (input, cl_options[mnc].opt_text + 1, cmp_len) == 0) | |
144 | { | |
145 | /* Option matching this abbreviation. OK if it is the first | |
146 | match and that does not take a joined argument, or the | |
147 | second match, taking a joined argument and with only '=' | |
148 | added to the first match; otherwise considered | |
149 | ambiguous. */ | |
150 | if (mnc == mn_orig + 1 | |
151 | && !(cl_options[mnc].flags & CL_JOINED)) | |
152 | match_wrong_lang = mnc; | |
153 | else if (mnc == mn_orig + 2 | |
154 | && match_wrong_lang == mn_orig + 1 | |
155 | && (cl_options[mnc].flags & CL_JOINED) | |
156 | && (cl_options[mnc].opt_len | |
157 | == cl_options[mn_orig + 1].opt_len + 1) | |
158 | && strncmp (cl_options[mnc].opt_text + 1, | |
159 | cl_options[mn_orig + 1].opt_text + 1, | |
160 | cl_options[mn_orig + 1].opt_len) == 0) | |
161 | ; /* OK, as long as there are no more matches. */ | |
162 | else | |
163 | return OPT_SPECIAL_unknown; | |
164 | mnc++; | |
165 | } | |
166 | } | |
167 | ||
615ef0bb | 168 | /* Return the best wrong match, or OPT_SPECIAL_unknown if none. */ |
a1baa5f1 | 169 | return match_wrong_lang; |
170 | } | |
171 | ||
8e18705e | 172 | /* If ARG is a non-negative decimal or hexadecimal integer representable |
173 | in HOST_WIDE_INT return its value, otherwise return -1. If ERR is not | |
174 | null set *ERR to zero on success or to EINVAL or to the value of errno | |
175 | otherwise. */ | |
06907f25 | 176 | |
8e18705e | 177 | HOST_WIDE_INT |
178 | integral_argument (const char *arg, int *err, bool byte_size_suffix) | |
06907f25 | 179 | { |
8e18705e | 180 | if (!err) |
181 | err = &errno; | |
182 | ||
183 | if (!ISDIGIT (*arg)) | |
184 | { | |
185 | *err = EINVAL; | |
186 | return -1; | |
187 | } | |
188 | ||
189 | *err = 0; | |
190 | errno = 0; | |
06907f25 | 191 | |
8e18705e | 192 | char *end = NULL; |
193 | unsigned HOST_WIDE_INT unit = 1; | |
194 | unsigned HOST_WIDE_INT value = strtoull (arg, &end, 10); | |
06907f25 | 195 | |
8e18705e | 196 | /* If the value is too large to be represented use the maximum |
197 | representable value that strtoull sets VALUE to (setting | |
198 | errno to ERANGE). */ | |
06907f25 | 199 | |
8e18705e | 200 | if (end && *end) |
de42969d | 201 | { |
8e18705e | 202 | if (!byte_size_suffix) |
203 | { | |
204 | errno = 0; | |
205 | value = strtoull (arg, &end, 0); | |
206 | if (*end) | |
207 | { | |
2d3cf878 | 208 | if (errno) |
209 | *err = errno; | |
210 | else | |
211 | *err = EINVAL; | |
8e18705e | 212 | return -1; |
213 | } | |
214 | ||
215 | return value; | |
216 | } | |
217 | ||
218 | /* Numeric option arguments are at most INT_MAX. Make it | |
219 | possible to specify a larger value by accepting common | |
220 | suffixes. */ | |
221 | if (!strcmp (end, "kB")) | |
222 | unit = 1000; | |
223 | else if (!strcasecmp (end, "KiB") || !strcmp (end, "KB")) | |
224 | unit = 1024; | |
225 | else if (!strcmp (end, "MB")) | |
226 | unit = HOST_WIDE_INT_UC (1000) * 1000; | |
227 | else if (!strcasecmp (end, "MiB")) | |
228 | unit = HOST_WIDE_INT_UC (1024) * 1024; | |
229 | else if (!strcasecmp (end, "GB")) | |
230 | unit = HOST_WIDE_INT_UC (1000) * 1000 * 1000; | |
231 | else if (!strcasecmp (end, "GiB")) | |
232 | unit = HOST_WIDE_INT_UC (1024) * 1024 * 1024; | |
233 | else if (!strcasecmp (end, "TB")) | |
234 | unit = HOST_WIDE_INT_UC (1000) * 1000 * 1000 * 1000; | |
235 | else if (!strcasecmp (end, "TiB")) | |
236 | unit = HOST_WIDE_INT_UC (1024) * 1024 * 1024 * 1024; | |
237 | else if (!strcasecmp (end, "PB")) | |
238 | unit = HOST_WIDE_INT_UC (1000) * 1000 * 1000 * 1000 * 1000; | |
239 | else if (!strcasecmp (end, "PiB")) | |
240 | unit = HOST_WIDE_INT_UC (1024) * 1024 * 1024 * 1024 * 1024; | |
241 | else if (!strcasecmp (end, "EB")) | |
242 | unit = HOST_WIDE_INT_UC (1000) * 1000 * 1000 * 1000 * 1000 | |
243 | * 1000; | |
244 | else if (!strcasecmp (end, "EiB")) | |
245 | unit = HOST_WIDE_INT_UC (1024) * 1024 * 1024 * 1024 * 1024 | |
246 | * 1024; | |
247 | else | |
248 | { | |
249 | /* This could mean an unknown suffix or a bad prefix, like | |
250 | "+-1". */ | |
251 | *err = EINVAL; | |
252 | return -1; | |
253 | } | |
254 | } | |
de42969d | 255 | |
8e18705e | 256 | if (unit) |
257 | { | |
258 | unsigned HOST_WIDE_INT prod = value * unit; | |
259 | value = prod < value ? HOST_WIDE_INT_M1U : prod; | |
de42969d | 260 | } |
261 | ||
8e18705e | 262 | return value; |
06907f25 | 263 | } |
264 | ||
cb22f930 | 265 | /* Return whether OPTION is OK for the language given by |
266 | LANG_MASK. */ | |
267 | static bool | |
268 | option_ok_for_language (const struct cl_option *option, | |
269 | unsigned int lang_mask) | |
270 | { | |
271 | if (!(option->flags & lang_mask)) | |
272 | return false; | |
273 | else if ((option->flags & CL_TARGET) | |
274 | && (option->flags & (CL_LANG_ALL | CL_DRIVER)) | |
275 | && !(option->flags & (lang_mask & ~CL_COMMON & ~CL_TARGET))) | |
276 | /* Complain for target flag language mismatches if any languages | |
277 | are specified. */ | |
278 | return false; | |
279 | return true; | |
280 | } | |
281 | ||
d62a5950 | 282 | /* Return whether ENUM_ARG is OK for the language given by |
283 | LANG_MASK. */ | |
284 | ||
285 | static bool | |
286 | enum_arg_ok_for_language (const struct cl_enum_arg *enum_arg, | |
287 | unsigned int lang_mask) | |
288 | { | |
289 | return (lang_mask & CL_DRIVER) || !(enum_arg->flags & CL_ENUM_DRIVER_ONLY); | |
290 | } | |
291 | ||
292 | /* Look up ARG in ENUM_ARGS for language LANG_MASK, returning true and | |
293 | storing the value in *VALUE if found, and returning false without | |
294 | modifying *VALUE if not found. */ | |
295 | ||
296 | static bool | |
297 | enum_arg_to_value (const struct cl_enum_arg *enum_args, | |
8e18705e | 298 | const char *arg, HOST_WIDE_INT *value, |
299 | unsigned int lang_mask) | |
d62a5950 | 300 | { |
301 | unsigned int i; | |
302 | ||
303 | for (i = 0; enum_args[i].arg != NULL; i++) | |
304 | if (strcmp (arg, enum_args[i].arg) == 0 | |
305 | && enum_arg_ok_for_language (&enum_args[i], lang_mask)) | |
306 | { | |
307 | *value = enum_args[i].value; | |
308 | return true; | |
309 | } | |
310 | ||
311 | return false; | |
312 | } | |
313 | ||
9105695c | 314 | /* Look up ARG in the enum used by option OPT_INDEX for language |
315 | LANG_MASK, returning true and storing the value in *VALUE if found, | |
316 | and returning false without modifying *VALUE if not found. */ | |
317 | ||
318 | bool | |
8e18705e | 319 | opt_enum_arg_to_value (size_t opt_index, const char *arg, |
320 | int *value, unsigned int lang_mask) | |
9105695c | 321 | { |
322 | const struct cl_option *option = &cl_options[opt_index]; | |
323 | ||
324 | gcc_assert (option->var_type == CLVC_ENUM); | |
325 | ||
8e18705e | 326 | HOST_WIDE_INT wideval; |
327 | if (enum_arg_to_value (cl_enums[option->var_enum].values, arg, | |
328 | &wideval, lang_mask)) | |
329 | { | |
330 | *value = wideval; | |
331 | return true; | |
332 | } | |
333 | ||
334 | return false; | |
9105695c | 335 | } |
336 | ||
d62a5950 | 337 | /* Look of VALUE in ENUM_ARGS for language LANG_MASK and store the |
338 | corresponding string in *ARGP, returning true if the found string | |
339 | was marked as canonical, false otherwise. If VALUE is not found | |
340 | (which may be the case for uninitialized values if the relevant | |
341 | option has not been passed), set *ARGP to NULL and return | |
342 | false. */ | |
343 | ||
344 | bool | |
345 | enum_value_to_arg (const struct cl_enum_arg *enum_args, | |
346 | const char **argp, int value, unsigned int lang_mask) | |
347 | { | |
348 | unsigned int i; | |
349 | ||
350 | for (i = 0; enum_args[i].arg != NULL; i++) | |
351 | if (enum_args[i].value == value | |
352 | && (enum_args[i].flags & CL_ENUM_CANONICAL) | |
353 | && enum_arg_ok_for_language (&enum_args[i], lang_mask)) | |
354 | { | |
355 | *argp = enum_args[i].arg; | |
356 | return true; | |
357 | } | |
358 | ||
359 | for (i = 0; enum_args[i].arg != NULL; i++) | |
360 | if (enum_args[i].value == value | |
361 | && enum_arg_ok_for_language (&enum_args[i], lang_mask)) | |
362 | { | |
363 | *argp = enum_args[i].arg; | |
364 | return false; | |
365 | } | |
366 | ||
367 | *argp = NULL; | |
368 | return false; | |
369 | } | |
67089c6b | 370 | |
371 | /* Fill in the canonical option part of *DECODED with an option | |
372 | described by OPT_INDEX, ARG and VALUE. */ | |
373 | ||
374 | static void | |
8e18705e | 375 | generate_canonical_option (size_t opt_index, const char *arg, |
376 | HOST_WIDE_INT value, | |
67089c6b | 377 | struct cl_decoded_option *decoded) |
378 | { | |
379 | const struct cl_option *option = &cl_options[opt_index]; | |
380 | const char *opt_text = option->opt_text; | |
381 | ||
382 | if (value == 0 | |
ec840af4 | 383 | && !option->cl_reject_negative |
a1408eb3 | 384 | && (opt_text[1] == 'W' || opt_text[1] == 'f' |
385 | || opt_text[1] == 'g' || opt_text[1] == 'm')) | |
67089c6b | 386 | { |
ba30d337 | 387 | char *t = XOBNEWVEC (&opts_obstack, char, option->opt_len + 5); |
67089c6b | 388 | t[0] = '-'; |
389 | t[1] = opt_text[1]; | |
390 | t[2] = 'n'; | |
391 | t[3] = 'o'; | |
392 | t[4] = '-'; | |
393 | memcpy (t + 5, opt_text + 2, option->opt_len); | |
394 | opt_text = t; | |
395 | } | |
396 | ||
397 | decoded->canonical_option[2] = NULL; | |
398 | decoded->canonical_option[3] = NULL; | |
399 | ||
400 | if (arg) | |
401 | { | |
0b1d266f | 402 | if ((option->flags & CL_SEPARATE) |
ec840af4 | 403 | && !option->cl_separate_alias) |
67089c6b | 404 | { |
405 | decoded->canonical_option[0] = opt_text; | |
406 | decoded->canonical_option[1] = arg; | |
407 | decoded->canonical_option_num_elements = 2; | |
408 | } | |
409 | else | |
410 | { | |
411 | gcc_assert (option->flags & CL_JOINED); | |
ba30d337 | 412 | decoded->canonical_option[0] = opts_concat (opt_text, arg, NULL); |
67089c6b | 413 | decoded->canonical_option[1] = NULL; |
414 | decoded->canonical_option_num_elements = 1; | |
415 | } | |
416 | } | |
417 | else | |
418 | { | |
419 | decoded->canonical_option[0] = opt_text; | |
420 | decoded->canonical_option[1] = NULL; | |
421 | decoded->canonical_option_num_elements = 1; | |
422 | } | |
423 | } | |
424 | ||
5789e05b | 425 | /* Structure describing mappings from options on the command line to |
426 | options to look up with find_opt. */ | |
427 | struct option_map | |
428 | { | |
429 | /* Prefix of the option on the command line. */ | |
430 | const char *opt0; | |
431 | /* If two argv elements are considered to be merged into one option, | |
432 | prefix for the second element, otherwise NULL. */ | |
433 | const char *opt1; | |
434 | /* The new prefix to map to. */ | |
435 | const char *new_prefix; | |
436 | /* Whether at least one character is needed following opt1 or opt0 | |
437 | for this mapping to be used. (--optimize= is valid for -O, but | |
438 | --warn- is not valid for -W.) */ | |
439 | bool another_char_needed; | |
440 | /* Whether the original option is a negated form of the option | |
441 | resulting from this map. */ | |
442 | bool negated; | |
443 | }; | |
444 | static const struct option_map option_map[] = | |
445 | { | |
446 | { "-Wno-", NULL, "-W", false, true }, | |
447 | { "-fno-", NULL, "-f", false, true }, | |
a1408eb3 | 448 | { "-gno-", NULL, "-g", false, true }, |
5789e05b | 449 | { "-mno-", NULL, "-m", false, true }, |
450 | { "--debug=", NULL, "-g", false, false }, | |
451 | { "--machine-", NULL, "-m", true, false }, | |
452 | { "--machine-no-", NULL, "-m", false, true }, | |
453 | { "--machine=", NULL, "-m", false, false }, | |
454 | { "--machine=no-", NULL, "-m", false, true }, | |
455 | { "--machine", "", "-m", false, false }, | |
456 | { "--machine", "no-", "-m", false, true }, | |
457 | { "--optimize=", NULL, "-O", false, false }, | |
458 | { "--std=", NULL, "-std=", false, false }, | |
459 | { "--std", "", "-std=", false, false }, | |
460 | { "--warn-", NULL, "-W", true, false }, | |
461 | { "--warn-no-", NULL, "-W", false, true }, | |
462 | { "--", NULL, "-f", true, false }, | |
463 | { "--no-", NULL, "-f", false, true } | |
464 | }; | |
465 | ||
da7d5066 | 466 | /* Helper function for gcc.c's driver::suggest_option, for populating the |
467 | vec of suggestions for misspelled options. | |
468 | ||
469 | option_map above provides various prefixes for spelling command-line | |
470 | options, which decode_cmdline_option uses to map spellings of options | |
471 | to specific options. We want to do the reverse: to find all the ways | |
472 | that a user could validly spell an option. | |
473 | ||
413c4f6c | 474 | Given valid OPT_TEXT (with a leading dash) for OPTION, add it and all |
475 | of its valid variant spellings to CANDIDATES, each without a leading | |
476 | dash. | |
da7d5066 | 477 | |
478 | For example, given "-Wabi-tag", the following are added to CANDIDATES: | |
479 | "Wabi-tag" | |
480 | "Wno-abi-tag" | |
481 | "-warn-abi-tag" | |
482 | "-warn-no-abi-tag". | |
483 | ||
484 | The added strings must be freed using free. */ | |
485 | ||
486 | void | |
487 | add_misspelling_candidates (auto_vec<char *> *candidates, | |
413c4f6c | 488 | const struct cl_option *option, |
da7d5066 | 489 | const char *opt_text) |
490 | { | |
491 | gcc_assert (candidates); | |
413c4f6c | 492 | gcc_assert (option); |
da7d5066 | 493 | gcc_assert (opt_text); |
a1408eb3 | 494 | if (remapping_prefix_p (option)) |
495 | return; | |
da7d5066 | 496 | candidates->safe_push (xstrdup (opt_text + 1)); |
497 | for (unsigned i = 0; i < ARRAY_SIZE (option_map); i++) | |
498 | { | |
499 | const char *opt0 = option_map[i].opt0; | |
500 | const char *new_prefix = option_map[i].new_prefix; | |
501 | size_t new_prefix_len = strlen (new_prefix); | |
502 | ||
413c4f6c | 503 | if (option->cl_reject_negative && option_map[i].negated) |
504 | continue; | |
505 | ||
da7d5066 | 506 | if (strncmp (opt_text, new_prefix, new_prefix_len) == 0) |
507 | { | |
508 | char *alternative = concat (opt0 + 1, opt_text + new_prefix_len, | |
509 | NULL); | |
510 | candidates->safe_push (alternative); | |
511 | } | |
512 | } | |
513 | } | |
514 | ||
06907f25 | 515 | /* Decode the switch beginning at ARGV for the language indicated by |
e28aa114 | 516 | LANG_MASK (including CL_COMMON and CL_TARGET if applicable), into |
517 | the structure *DECODED. Returns the number of switches | |
518 | consumed. */ | |
06907f25 | 519 | |
615ef0bb | 520 | static unsigned int |
06907f25 | 521 | decode_cmdline_option (const char **argv, unsigned int lang_mask, |
522 | struct cl_decoded_option *decoded) | |
523 | { | |
524 | size_t opt_index; | |
5789e05b | 525 | const char *arg = 0; |
8e18705e | 526 | HOST_WIDE_INT value = 1; |
b904552d | 527 | unsigned int result = 1, i, extra_args, separate_args = 0; |
5789e05b | 528 | int adjust_len = 0; |
71a2f35e | 529 | size_t total_len; |
530 | char *p; | |
06907f25 | 531 | const struct cl_option *option; |
532 | int errors = 0; | |
3b0273a1 | 533 | const char *warn_message = NULL; |
89c69892 | 534 | bool separate_arg_flag; |
535 | bool joined_arg_flag; | |
0b1d266f | 536 | bool have_separate_arg = false; |
06907f25 | 537 | |
5789e05b | 538 | extra_args = 0; |
06907f25 | 539 | |
2a245bc8 | 540 | const char *opt_value = argv[0] + 1; |
541 | opt_index = find_opt (opt_value, lang_mask); | |
5789e05b | 542 | i = 0; |
543 | while (opt_index == OPT_SPECIAL_unknown | |
544 | && i < ARRAY_SIZE (option_map)) | |
06907f25 | 545 | { |
5789e05b | 546 | const char *opt0 = option_map[i].opt0; |
547 | const char *opt1 = option_map[i].opt1; | |
548 | const char *new_prefix = option_map[i].new_prefix; | |
549 | bool another_char_needed = option_map[i].another_char_needed; | |
550 | size_t opt0_len = strlen (opt0); | |
551 | size_t opt1_len = (opt1 == NULL ? 0 : strlen (opt1)); | |
552 | size_t optn_len = (opt1 == NULL ? opt0_len : opt1_len); | |
553 | size_t new_prefix_len = strlen (new_prefix); | |
554 | ||
555 | extra_args = (opt1 == NULL ? 0 : 1); | |
556 | value = !option_map[i].negated; | |
557 | ||
558 | if (strncmp (argv[0], opt0, opt0_len) == 0 | |
559 | && (opt1 == NULL | |
560 | || (argv[1] != NULL && strncmp (argv[1], opt1, opt1_len) == 0)) | |
561 | && (!another_char_needed | |
562 | || argv[extra_args][optn_len] != 0)) | |
563 | { | |
564 | size_t arglen = strlen (argv[extra_args]); | |
565 | char *dup; | |
566 | ||
567 | adjust_len = (int) optn_len - (int) new_prefix_len; | |
568 | dup = XNEWVEC (char, arglen + 1 - adjust_len); | |
569 | memcpy (dup, new_prefix, new_prefix_len); | |
570 | memcpy (dup + new_prefix_len, argv[extra_args] + optn_len, | |
571 | arglen - optn_len + 1); | |
572 | opt_index = find_opt (dup + 1, lang_mask); | |
573 | free (dup); | |
574 | } | |
575 | i++; | |
06907f25 | 576 | } |
577 | ||
615ef0bb | 578 | if (opt_index == OPT_SPECIAL_unknown) |
579 | { | |
580 | arg = argv[0]; | |
5789e05b | 581 | extra_args = 0; |
582 | value = 1; | |
615ef0bb | 583 | goto done; |
584 | } | |
06907f25 | 585 | |
586 | option = &cl_options[opt_index]; | |
587 | ||
588 | /* Reject negative form of switches that don't take negatives as | |
589 | unrecognized. */ | |
ec840af4 | 590 | if (!value && option->cl_reject_negative) |
06907f25 | 591 | { |
615ef0bb | 592 | opt_index = OPT_SPECIAL_unknown; |
19c8675b | 593 | errors |= CL_ERR_NEGATIVE; |
615ef0bb | 594 | arg = argv[0]; |
06907f25 | 595 | goto done; |
596 | } | |
597 | ||
8e18705e | 598 | /* Clear the initial value for size options (it will be overwritten |
599 | later based on the Init(value) specification in the opt file. */ | |
600 | if (option->var_type == CLVC_SIZE) | |
601 | value = 0; | |
602 | ||
5789e05b | 603 | result = extra_args + 1; |
3b0273a1 | 604 | warn_message = option->warn_message; |
605 | ||
06907f25 | 606 | /* Check to see if the option is disabled for this configuration. */ |
ec840af4 | 607 | if (option->cl_disabled) |
06907f25 | 608 | errors |= CL_ERR_DISABLED; |
609 | ||
89c69892 | 610 | /* Determine whether there may be a separate argument based on |
e2028bfa | 611 | whether this option is being processed for the driver, and, if |
612 | so, how many such arguments. */ | |
89c69892 | 613 | separate_arg_flag = ((option->flags & CL_SEPARATE) |
ec840af4 | 614 | && !(option->cl_no_driver_arg |
89c69892 | 615 | && (lang_mask & CL_DRIVER))); |
e2028bfa | 616 | separate_args = (separate_arg_flag |
ec840af4 | 617 | ? option->cl_separate_nargs + 1 |
e2028bfa | 618 | : 0); |
89c69892 | 619 | joined_arg_flag = (option->flags & CL_JOINED) != 0; |
620 | ||
06907f25 | 621 | /* Sort out any argument the switch takes. */ |
89c69892 | 622 | if (joined_arg_flag) |
06907f25 | 623 | { |
624 | /* Have arg point to the original switch. This is because | |
625 | some code, such as disable_builtin_function, expects its | |
626 | argument to be persistent until the program exits. */ | |
5789e05b | 627 | arg = argv[extra_args] + cl_options[opt_index].opt_len + 1 + adjust_len; |
06907f25 | 628 | |
ec840af4 | 629 | if (*arg == '\0' && !option->cl_missing_ok) |
06907f25 | 630 | { |
89c69892 | 631 | if (separate_arg_flag) |
06907f25 | 632 | { |
5789e05b | 633 | arg = argv[extra_args + 1]; |
634 | result = extra_args + 2; | |
06907f25 | 635 | if (arg == NULL) |
5789e05b | 636 | result = extra_args + 1; |
0b1d266f | 637 | else |
638 | have_separate_arg = true; | |
06907f25 | 639 | } |
640 | else | |
641 | /* Missing argument. */ | |
642 | arg = NULL; | |
643 | } | |
644 | } | |
89c69892 | 645 | else if (separate_arg_flag) |
06907f25 | 646 | { |
5789e05b | 647 | arg = argv[extra_args + 1]; |
e2028bfa | 648 | for (i = 0; i < separate_args; i++) |
649 | if (argv[extra_args + 1 + i] == NULL) | |
650 | { | |
651 | errors |= CL_ERR_MISSING_ARG; | |
652 | break; | |
653 | } | |
654 | result = extra_args + 1 + i; | |
655 | if (arg != NULL) | |
0b1d266f | 656 | have_separate_arg = true; |
06907f25 | 657 | } |
658 | ||
67089c6b | 659 | if (arg == NULL && (separate_arg_flag || joined_arg_flag)) |
660 | errors |= CL_ERR_MISSING_ARG; | |
661 | ||
3b0273a1 | 662 | /* Is this option an alias (or an ignored option, marked as an alias |
663 | of OPT_SPECIAL_ignore)? */ | |
0b1d266f | 664 | if (option->alias_target != N_OPTS |
ec840af4 | 665 | && (!option->cl_separate_alias || have_separate_arg)) |
67089c6b | 666 | { |
667 | size_t new_opt_index = option->alias_target; | |
67089c6b | 668 | |
0c46a085 | 669 | if (new_opt_index == OPT_SPECIAL_ignore |
670 | || new_opt_index == OPT_SPECIAL_deprecated) | |
67089c6b | 671 | { |
3b0273a1 | 672 | gcc_assert (option->alias_arg == NULL); |
673 | gcc_assert (option->neg_alias_arg == NULL); | |
674 | opt_index = new_opt_index; | |
675 | arg = NULL; | |
67089c6b | 676 | } |
3b0273a1 | 677 | else |
67089c6b | 678 | { |
3b0273a1 | 679 | const struct cl_option *new_option = &cl_options[new_opt_index]; |
67089c6b | 680 | |
3b0273a1 | 681 | /* The new option must not be an alias itself. */ |
5789e05b | 682 | gcc_assert (new_option->alias_target == N_OPTS |
ec840af4 | 683 | || new_option->cl_separate_alias); |
67089c6b | 684 | |
3b0273a1 | 685 | if (option->neg_alias_arg) |
686 | { | |
687 | gcc_assert (option->alias_arg != NULL); | |
688 | gcc_assert (arg == NULL); | |
ec840af4 | 689 | gcc_assert (!option->cl_negative_alias); |
3b0273a1 | 690 | if (value) |
691 | arg = option->alias_arg; | |
692 | else | |
693 | arg = option->neg_alias_arg; | |
694 | value = 1; | |
695 | } | |
696 | else if (option->alias_arg) | |
697 | { | |
698 | gcc_assert (value == 1); | |
699 | gcc_assert (arg == NULL); | |
ec840af4 | 700 | gcc_assert (!option->cl_negative_alias); |
3b0273a1 | 701 | arg = option->alias_arg; |
702 | } | |
67089c6b | 703 | |
ec840af4 | 704 | if (option->cl_negative_alias) |
4e775b8e | 705 | value = !value; |
706 | ||
3b0273a1 | 707 | opt_index = new_opt_index; |
708 | option = new_option; | |
67089c6b | 709 | |
3b0273a1 | 710 | if (value == 0) |
ec840af4 | 711 | gcc_assert (!option->cl_reject_negative); |
3b0273a1 | 712 | |
713 | /* Recompute what arguments are allowed. */ | |
714 | separate_arg_flag = ((option->flags & CL_SEPARATE) | |
ec840af4 | 715 | && !(option->cl_no_driver_arg |
3b0273a1 | 716 | && (lang_mask & CL_DRIVER))); |
717 | joined_arg_flag = (option->flags & CL_JOINED) != 0; | |
718 | ||
ec840af4 | 719 | if (separate_args > 1 || option->cl_separate_nargs) |
e2028bfa | 720 | gcc_assert (separate_args |
ec840af4 | 721 | == (unsigned int) option->cl_separate_nargs + 1); |
e2028bfa | 722 | |
3b0273a1 | 723 | if (!(errors & CL_ERR_MISSING_ARG)) |
724 | { | |
725 | if (separate_arg_flag || joined_arg_flag) | |
5789e05b | 726 | { |
ec840af4 | 727 | if (option->cl_missing_ok && arg == NULL) |
5789e05b | 728 | arg = ""; |
729 | gcc_assert (arg != NULL); | |
730 | } | |
3b0273a1 | 731 | else |
732 | gcc_assert (arg == NULL); | |
733 | } | |
67089c6b | 734 | |
3b0273a1 | 735 | /* Recheck for warnings and disabled options. */ |
736 | if (option->warn_message) | |
737 | { | |
738 | gcc_assert (warn_message == NULL); | |
739 | warn_message = option->warn_message; | |
740 | } | |
ec840af4 | 741 | if (option->cl_disabled) |
3b0273a1 | 742 | errors |= CL_ERR_DISABLED; |
743 | } | |
67089c6b | 744 | } |
745 | ||
06907f25 | 746 | /* Check if this is a switch for a different front end. */ |
cb22f930 | 747 | if (!option_ok_for_language (option, lang_mask)) |
06907f25 | 748 | errors |= CL_ERR_WRONG_LANG; |
2a245bc8 | 749 | else if (strcmp (option->opt_text, "-Werror=") == 0 |
750 | && strchr (opt_value, ',') == NULL) | |
751 | { | |
752 | /* Verify that -Werror argument is a valid warning | |
753 | for a language. */ | |
754 | char *werror_arg = xstrdup (opt_value + 6); | |
755 | werror_arg[0] = 'W'; | |
756 | ||
757 | size_t warning_index = find_opt (werror_arg, lang_mask); | |
758 | if (warning_index != OPT_SPECIAL_unknown) | |
759 | { | |
760 | const struct cl_option *warning_option | |
761 | = &cl_options[warning_index]; | |
762 | if (!option_ok_for_language (warning_option, lang_mask)) | |
763 | errors |= CL_ERR_WRONG_LANG; | |
764 | } | |
765 | } | |
06907f25 | 766 | |
cb14e058 | 767 | /* Convert the argument to lowercase if appropriate. */ |
768 | if (arg && option->cl_tolower) | |
769 | { | |
770 | size_t j; | |
771 | size_t len = strlen (arg); | |
ba30d337 | 772 | char *arg_lower = XOBNEWVEC (&opts_obstack, char, len + 1); |
cb14e058 | 773 | |
774 | for (j = 0; j < len; j++) | |
775 | arg_lower[j] = TOLOWER ((unsigned char) arg[j]); | |
776 | arg_lower[len] = 0; | |
777 | arg = arg_lower; | |
778 | } | |
779 | ||
8e18705e | 780 | /* If the switch takes an integer argument, convert it. */ |
781 | if (arg && (option->cl_uinteger || option->cl_host_wide_int)) | |
06907f25 | 782 | { |
8e18705e | 783 | int error = 0; |
784 | value = *arg ? integral_argument (arg, &error, option->cl_byte_size) : 0; | |
785 | if (error) | |
06907f25 | 786 | errors |= CL_ERR_UINT_ARG; |
52368c34 | 787 | |
788 | /* Reject value out of a range. */ | |
789 | if (option->range_max != -1 | |
790 | && (value < option->range_min || value > option->range_max)) | |
791 | errors |= CL_ERR_INT_RANGE_ARG; | |
06907f25 | 792 | } |
793 | ||
d62a5950 | 794 | /* If the switch takes an enumerated argument, convert it. */ |
795 | if (arg && (option->var_type == CLVC_ENUM)) | |
796 | { | |
797 | const struct cl_enum *e = &cl_enums[option->var_enum]; | |
798 | ||
799 | gcc_assert (value == 1); | |
800 | if (enum_arg_to_value (e->values, arg, &value, lang_mask)) | |
801 | { | |
802 | const char *carg = NULL; | |
803 | ||
804 | if (enum_value_to_arg (e->values, &carg, value, lang_mask)) | |
805 | arg = carg; | |
806 | gcc_assert (carg != NULL); | |
807 | } | |
808 | else | |
809 | errors |= CL_ERR_ENUM_ARG; | |
810 | } | |
811 | ||
06907f25 | 812 | done: |
06907f25 | 813 | decoded->opt_index = opt_index; |
814 | decoded->arg = arg; | |
815 | decoded->value = value; | |
816 | decoded->errors = errors; | |
3b0273a1 | 817 | decoded->warn_message = warn_message; |
71a2f35e | 818 | |
819 | if (opt_index == OPT_SPECIAL_unknown) | |
e2028bfa | 820 | gcc_assert (result == 1); |
71a2f35e | 821 | |
822 | gcc_assert (result >= 1 && result <= ARRAY_SIZE (decoded->canonical_option)); | |
823 | decoded->canonical_option_num_elements = result; | |
824 | total_len = 0; | |
825 | for (i = 0; i < ARRAY_SIZE (decoded->canonical_option); i++) | |
826 | { | |
827 | if (i < result) | |
828 | { | |
fde5bd5c | 829 | size_t len; |
67089c6b | 830 | if (opt_index == OPT_SPECIAL_unknown) |
831 | decoded->canonical_option[i] = argv[i]; | |
832 | else | |
833 | decoded->canonical_option[i] = NULL; | |
fde5bd5c | 834 | len = strlen (argv[i]); |
835 | /* If the argument is an empty string, we will print it as "" in | |
836 | orig_option_with_args_text. */ | |
837 | total_len += (len != 0 ? len : 2) + 1; | |
71a2f35e | 838 | } |
839 | else | |
840 | decoded->canonical_option[i] = NULL; | |
841 | } | |
0c46a085 | 842 | if (opt_index != OPT_SPECIAL_unknown && opt_index != OPT_SPECIAL_ignore |
843 | && opt_index != OPT_SPECIAL_deprecated) | |
e2028bfa | 844 | { |
845 | generate_canonical_option (opt_index, arg, value, decoded); | |
846 | if (separate_args > 1) | |
847 | { | |
848 | for (i = 0; i < separate_args; i++) | |
849 | { | |
850 | if (argv[extra_args + 1 + i] == NULL) | |
851 | break; | |
852 | else | |
853 | decoded->canonical_option[1 + i] = argv[extra_args + 1 + i]; | |
854 | } | |
855 | gcc_assert (result == 1 + i); | |
856 | decoded->canonical_option_num_elements = result; | |
857 | } | |
858 | } | |
ba30d337 | 859 | decoded->orig_option_with_args_text |
860 | = p = XOBNEWVEC (&opts_obstack, char, total_len); | |
71a2f35e | 861 | for (i = 0; i < result; i++) |
862 | { | |
863 | size_t len = strlen (argv[i]); | |
864 | ||
fde5bd5c | 865 | /* Print the empty string verbally. */ |
866 | if (len == 0) | |
867 | { | |
868 | *p++ = '"'; | |
869 | *p++ = '"'; | |
870 | } | |
871 | else | |
872 | memcpy (p, argv[i], len); | |
71a2f35e | 873 | p += len; |
874 | if (i == result - 1) | |
875 | *p++ = 0; | |
876 | else | |
877 | *p++ = ' '; | |
878 | } | |
879 | ||
06907f25 | 880 | return result; |
881 | } | |
882 | ||
70639a9d | 883 | /* Obstack for option strings. */ |
884 | ||
885 | struct obstack opts_obstack; | |
886 | ||
887 | /* Like libiberty concat, but allocate using opts_obstack. */ | |
888 | ||
889 | char * | |
890 | opts_concat (const char *first, ...) | |
891 | { | |
892 | char *newstr, *end; | |
893 | size_t length = 0; | |
894 | const char *arg; | |
895 | va_list ap; | |
896 | ||
897 | /* First compute the size of the result and get sufficient memory. */ | |
898 | va_start (ap, first); | |
899 | for (arg = first; arg; arg = va_arg (ap, const char *)) | |
900 | length += strlen (arg); | |
901 | newstr = XOBNEWVEC (&opts_obstack, char, length + 1); | |
902 | va_end (ap); | |
903 | ||
904 | /* Now copy the individual pieces to the result string. */ | |
905 | va_start (ap, first); | |
906 | for (arg = first, end = newstr; arg; arg = va_arg (ap, const char *)) | |
907 | { | |
908 | length = strlen (arg); | |
909 | memcpy (end, arg, length); | |
910 | end += length; | |
911 | } | |
912 | *end = '\0'; | |
913 | va_end (ap); | |
914 | return newstr; | |
915 | } | |
916 | ||
615ef0bb | 917 | /* Decode command-line options (ARGC and ARGV being the arguments of |
918 | main) into an array, setting *DECODED_OPTIONS to a pointer to that | |
919 | array and *DECODED_OPTIONS_COUNT to the number of entries in the | |
920 | array. The first entry in the array is always one for the program | |
921 | name (OPT_SPECIAL_program_name). LANG_MASK indicates the language | |
e28aa114 | 922 | flags applicable for decoding (including CL_COMMON and CL_TARGET if |
923 | those options should be considered applicable). Do not produce any | |
924 | diagnostics or set state outside of these variables. */ | |
615ef0bb | 925 | |
926 | void | |
927 | decode_cmdline_options_to_array (unsigned int argc, const char **argv, | |
928 | unsigned int lang_mask, | |
929 | struct cl_decoded_option **decoded_options, | |
930 | unsigned int *decoded_options_count) | |
931 | { | |
2c2747c3 | 932 | unsigned int n, i; |
615ef0bb | 933 | struct cl_decoded_option *opt_array; |
934 | unsigned int num_decoded_options; | |
935 | ||
936 | opt_array = XNEWVEC (struct cl_decoded_option, argc); | |
937 | ||
938 | opt_array[0].opt_index = OPT_SPECIAL_program_name; | |
3b0273a1 | 939 | opt_array[0].warn_message = NULL; |
615ef0bb | 940 | opt_array[0].arg = argv[0]; |
941 | opt_array[0].orig_option_with_args_text = argv[0]; | |
71a2f35e | 942 | opt_array[0].canonical_option_num_elements = 1; |
e88d34f6 | 943 | opt_array[0].canonical_option[0] = argv[0]; |
944 | opt_array[0].canonical_option[1] = NULL; | |
71a2f35e | 945 | opt_array[0].canonical_option[2] = NULL; |
946 | opt_array[0].canonical_option[3] = NULL; | |
615ef0bb | 947 | opt_array[0].value = 1; |
948 | opt_array[0].errors = 0; | |
949 | num_decoded_options = 1; | |
950 | ||
951 | for (i = 1; i < argc; i += n) | |
952 | { | |
953 | const char *opt = argv[i]; | |
954 | ||
955 | /* Interpret "-" or a non-switch as a file name. */ | |
956 | if (opt[0] != '-' || opt[1] == '\0') | |
957 | { | |
cb22f930 | 958 | generate_option_input_file (opt, &opt_array[num_decoded_options]); |
615ef0bb | 959 | num_decoded_options++; |
960 | n = 1; | |
961 | continue; | |
962 | } | |
963 | ||
964 | n = decode_cmdline_option (argv + i, lang_mask, | |
965 | &opt_array[num_decoded_options]); | |
966 | num_decoded_options++; | |
967 | } | |
968 | ||
615ef0bb | 969 | *decoded_options = opt_array; |
970 | *decoded_options_count = num_decoded_options; | |
e62df35b | 971 | prune_options (decoded_options, decoded_options_count); |
615ef0bb | 972 | } |
973 | ||
a1baa5f1 | 974 | /* Return true if NEXT_OPT_IDX cancels OPT_IDX. Return false if the |
975 | next one is the same as ORIG_NEXT_OPT_IDX. */ | |
976 | ||
977 | static bool | |
978 | cancel_option (int opt_idx, int next_opt_idx, int orig_next_opt_idx) | |
979 | { | |
980 | /* An option can be canceled by the same option or an option with | |
981 | Negative. */ | |
982 | if (cl_options [next_opt_idx].neg_index == opt_idx) | |
983 | return true; | |
984 | ||
985 | if (cl_options [next_opt_idx].neg_index != orig_next_opt_idx) | |
986 | return cancel_option (opt_idx, cl_options [next_opt_idx].neg_index, | |
987 | orig_next_opt_idx); | |
48e1416a | 988 | |
a1baa5f1 | 989 | return false; |
990 | } | |
991 | ||
992 | /* Filter out options canceled by the ones after them. */ | |
993 | ||
e62df35b | 994 | static void |
995 | prune_options (struct cl_decoded_option **decoded_options, | |
996 | unsigned int *decoded_options_count) | |
a1baa5f1 | 997 | { |
e62df35b | 998 | unsigned int old_decoded_options_count = *decoded_options_count; |
999 | struct cl_decoded_option *old_decoded_options = *decoded_options; | |
1000 | unsigned int new_decoded_options_count; | |
1001 | struct cl_decoded_option *new_decoded_options | |
1002 | = XNEWVEC (struct cl_decoded_option, old_decoded_options_count); | |
1003 | unsigned int i; | |
a1baa5f1 | 1004 | const struct cl_option *option; |
1b3e7760 | 1005 | unsigned int fdiagnostics_color_idx = 0; |
a1baa5f1 | 1006 | |
1007 | /* Remove arguments which are negated by others after them. */ | |
e62df35b | 1008 | new_decoded_options_count = 0; |
1009 | for (i = 0; i < old_decoded_options_count; i++) | |
a1baa5f1 | 1010 | { |
e62df35b | 1011 | unsigned int j, opt_idx, next_opt_idx; |
1012 | ||
1013 | if (old_decoded_options[i].errors & ~CL_ERR_WRONG_LANG) | |
1014 | goto keep; | |
a1baa5f1 | 1015 | |
e62df35b | 1016 | opt_idx = old_decoded_options[i].opt_index; |
1017 | switch (opt_idx) | |
a1baa5f1 | 1018 | { |
e62df35b | 1019 | case OPT_SPECIAL_unknown: |
1020 | case OPT_SPECIAL_ignore: | |
0c46a085 | 1021 | case OPT_SPECIAL_deprecated: |
e62df35b | 1022 | case OPT_SPECIAL_program_name: |
1023 | case OPT_SPECIAL_input_file: | |
1024 | goto keep; | |
1025 | ||
1b3e7760 | 1026 | /* Do not save OPT_fdiagnostics_color_, just remember the last one. */ |
1027 | case OPT_fdiagnostics_color_: | |
1028 | fdiagnostics_color_idx = i; | |
1029 | continue; | |
1030 | ||
e62df35b | 1031 | default: |
1032 | gcc_assert (opt_idx < cl_options_count); | |
1033 | option = &cl_options[opt_idx]; | |
1034 | if (option->neg_index < 0) | |
1035 | goto keep; | |
1036 | ||
1037 | /* Skip joined switches. */ | |
8c0f695d | 1038 | if ((option->flags & CL_JOINED) |
1039 | && (!option->cl_reject_negative | |
1040 | || (unsigned int) option->neg_index != opt_idx)) | |
e62df35b | 1041 | goto keep; |
1042 | ||
1043 | for (j = i + 1; j < old_decoded_options_count; j++) | |
a1baa5f1 | 1044 | { |
e62df35b | 1045 | if (old_decoded_options[j].errors & ~CL_ERR_WRONG_LANG) |
1046 | continue; | |
1047 | next_opt_idx = old_decoded_options[j].opt_index; | |
1048 | if (next_opt_idx >= cl_options_count) | |
1049 | continue; | |
1050 | if (cl_options[next_opt_idx].neg_index < 0) | |
1051 | continue; | |
8c0f695d | 1052 | if ((cl_options[next_opt_idx].flags & CL_JOINED) |
1053 | && (!cl_options[next_opt_idx].cl_reject_negative | |
1054 | || ((unsigned int) cl_options[next_opt_idx].neg_index | |
1055 | != next_opt_idx))) | |
1056 | continue; | |
e62df35b | 1057 | if (cancel_option (opt_idx, next_opt_idx, next_opt_idx)) |
a1baa5f1 | 1058 | break; |
1059 | } | |
e62df35b | 1060 | if (j == old_decoded_options_count) |
1061 | { | |
a1baa5f1 | 1062 | keep: |
e62df35b | 1063 | new_decoded_options[new_decoded_options_count] |
1064 | = old_decoded_options[i]; | |
1065 | new_decoded_options_count++; | |
1066 | } | |
1067 | break; | |
a1baa5f1 | 1068 | } |
1069 | } | |
1070 | ||
160b0cdb | 1071 | if (fdiagnostics_color_idx >= 1) |
1b3e7760 | 1072 | { |
1073 | /* We put the last -fdiagnostics-color= at the first position | |
1074 | after argv[0] so it can take effect immediately. */ | |
1075 | memmove (new_decoded_options + 2, new_decoded_options + 1, | |
1076 | sizeof (struct cl_decoded_option) | |
1077 | * (new_decoded_options_count - 1)); | |
1078 | new_decoded_options[1] = old_decoded_options[fdiagnostics_color_idx]; | |
1079 | new_decoded_options_count++; | |
1080 | } | |
1081 | ||
e62df35b | 1082 | free (old_decoded_options); |
1083 | new_decoded_options = XRESIZEVEC (struct cl_decoded_option, | |
1084 | new_decoded_options, | |
1085 | new_decoded_options_count); | |
1086 | *decoded_options = new_decoded_options; | |
1087 | *decoded_options_count = new_decoded_options_count; | |
a1baa5f1 | 1088 | } |
b78351e5 | 1089 | |
666f4bf0 | 1090 | /* Handle option DECODED for the language indicated by LANG_MASK, |
f83b64ca | 1091 | using the handlers in HANDLERS and setting fields in OPTS and |
1092 | OPTS_SET. KIND is the diagnostic_t if this is a diagnostics | |
3c6c0e40 | 1093 | option, DK_UNSPECIFIED otherwise, and LOC is the location of the |
1094 | option for options from the source file, UNKNOWN_LOCATION | |
1095 | otherwise. GENERATED_P is true for an option generated as part of | |
1096 | processing another option or otherwise generated internally, false | |
09fd09eb | 1097 | for one explicitly passed by the user. control_warning_option |
1098 | generated options are considered explicitly passed by the user. | |
1099 | Returns false if the switch was invalid. DC is the diagnostic | |
1100 | context for options affecting diagnostics state, or NULL. */ | |
b78351e5 | 1101 | |
3c6c0e40 | 1102 | static bool |
2c5d2e39 | 1103 | handle_option (struct gcc_options *opts, |
f83b64ca | 1104 | struct gcc_options *opts_set, |
2c5d2e39 | 1105 | const struct cl_decoded_option *decoded, |
3c6c0e40 | 1106 | unsigned int lang_mask, int kind, location_t loc, |
f83b64ca | 1107 | const struct cl_option_handlers *handlers, |
24ca3b4e | 1108 | bool generated_p, diagnostic_context *dc) |
b78351e5 | 1109 | { |
666f4bf0 | 1110 | size_t opt_index = decoded->opt_index; |
1111 | const char *arg = decoded->arg; | |
8e18705e | 1112 | HOST_WIDE_INT value = decoded->value; |
b78351e5 | 1113 | const struct cl_option *option = &cl_options[opt_index]; |
2c5d2e39 | 1114 | void *flag_var = option_flag_var (opt_index, opts); |
b78351e5 | 1115 | size_t i; |
1116 | ||
2c5d2e39 | 1117 | if (flag_var) |
f83b64ca | 1118 | set_option (opts, (generated_p ? NULL : opts_set), |
3c6c0e40 | 1119 | opt_index, value, arg, kind, loc, dc); |
b78351e5 | 1120 | |
1121 | for (i = 0; i < handlers->num_handlers; i++) | |
1122 | if (option->flags & handlers->handlers[i].mask) | |
1123 | { | |
f83b64ca | 1124 | if (!handlers->handlers[i].handler (opts, opts_set, decoded, |
3c6c0e40 | 1125 | lang_mask, kind, loc, |
98102386 | 1126 | handlers, dc, |
1127 | handlers->target_option_override_hook)) | |
b78351e5 | 1128 | return false; |
b78351e5 | 1129 | } |
1130 | ||
1131 | return true; | |
1132 | } | |
1133 | ||
666f4bf0 | 1134 | /* Like handle_option, but OPT_INDEX, ARG and VALUE describe the |
1135 | option instead of DECODED. This is used for callbacks when one | |
1136 | option implies another instead of an option being decoded from the | |
1137 | command line. */ | |
1138 | ||
1139 | bool | |
f83b64ca | 1140 | handle_generated_option (struct gcc_options *opts, |
1141 | struct gcc_options *opts_set, | |
8e18705e | 1142 | size_t opt_index, const char *arg, HOST_WIDE_INT value, |
3c6c0e40 | 1143 | unsigned int lang_mask, int kind, location_t loc, |
24ca3b4e | 1144 | const struct cl_option_handlers *handlers, |
09fd09eb | 1145 | bool generated_p, diagnostic_context *dc) |
666f4bf0 | 1146 | { |
666f4bf0 | 1147 | struct cl_decoded_option decoded; |
1148 | ||
cb22f930 | 1149 | generate_option (opt_index, arg, value, lang_mask, &decoded); |
3c6c0e40 | 1150 | return handle_option (opts, opts_set, &decoded, lang_mask, kind, loc, |
09fd09eb | 1151 | handlers, generated_p, dc); |
cb22f930 | 1152 | } |
1153 | ||
1154 | /* Fill in *DECODED with an option described by OPT_INDEX, ARG and | |
1155 | VALUE for a front end using LANG_MASK. This is used when the | |
1156 | compiler generates options internally. */ | |
1157 | ||
1158 | void | |
8e18705e | 1159 | generate_option (size_t opt_index, const char *arg, HOST_WIDE_INT value, |
cb22f930 | 1160 | unsigned int lang_mask, struct cl_decoded_option *decoded) |
1161 | { | |
1162 | const struct cl_option *option = &cl_options[opt_index]; | |
1163 | ||
1164 | decoded->opt_index = opt_index; | |
3b0273a1 | 1165 | decoded->warn_message = NULL; |
cb22f930 | 1166 | decoded->arg = arg; |
cb22f930 | 1167 | decoded->value = value; |
1168 | decoded->errors = (option_ok_for_language (option, lang_mask) | |
1169 | ? 0 | |
1170 | : CL_ERR_WRONG_LANG); | |
666f4bf0 | 1171 | |
67089c6b | 1172 | generate_canonical_option (opt_index, arg, value, decoded); |
1173 | switch (decoded->canonical_option_num_elements) | |
666f4bf0 | 1174 | { |
67089c6b | 1175 | case 1: |
1176 | decoded->orig_option_with_args_text = decoded->canonical_option[0]; | |
1177 | break; | |
1178 | ||
1179 | case 2: | |
1180 | decoded->orig_option_with_args_text | |
ba30d337 | 1181 | = opts_concat (decoded->canonical_option[0], " ", |
1182 | decoded->canonical_option[1], NULL); | |
67089c6b | 1183 | break; |
1184 | ||
1185 | default: | |
1186 | gcc_unreachable (); | |
666f4bf0 | 1187 | } |
cb22f930 | 1188 | } |
666f4bf0 | 1189 | |
cb22f930 | 1190 | /* Fill in *DECODED with an option for input file FILE. */ |
1191 | ||
1192 | void | |
1193 | generate_option_input_file (const char *file, | |
1194 | struct cl_decoded_option *decoded) | |
1195 | { | |
1196 | decoded->opt_index = OPT_SPECIAL_input_file; | |
3b0273a1 | 1197 | decoded->warn_message = NULL; |
cb22f930 | 1198 | decoded->arg = file; |
1199 | decoded->orig_option_with_args_text = file; | |
1200 | decoded->canonical_option_num_elements = 1; | |
1201 | decoded->canonical_option[0] = file; | |
1202 | decoded->canonical_option[1] = NULL; | |
1203 | decoded->canonical_option[2] = NULL; | |
1204 | decoded->canonical_option[3] = NULL; | |
1205 | decoded->value = 1; | |
1206 | decoded->errors = 0; | |
666f4bf0 | 1207 | } |
1208 | ||
afbacb06 | 1209 | /* Helper function for listing valid choices and hint for misspelled |
1210 | value. CANDIDATES is a vector containing all valid strings, | |
1211 | STR is set to a heap allocated string that contains all those | |
1212 | strings concatenated, separated by spaces, and the return value | |
1213 | is the closest string from those to ARG, or NULL if nothing is | |
1214 | close enough. Callers should XDELETEVEC (STR) after using it | |
1215 | to avoid memory leaks. */ | |
1216 | ||
1217 | const char * | |
1218 | candidates_list_and_hint (const char *arg, char *&str, | |
1219 | const auto_vec <const char *> &candidates) | |
1220 | { | |
1221 | size_t len = 0; | |
1222 | int i; | |
1223 | const char *candidate; | |
1224 | char *p; | |
1225 | ||
1226 | FOR_EACH_VEC_ELT (candidates, i, candidate) | |
1227 | len += strlen (candidate) + 1; | |
1228 | ||
1229 | str = p = XNEWVEC (char, len); | |
1230 | FOR_EACH_VEC_ELT (candidates, i, candidate) | |
1231 | { | |
1232 | len = strlen (candidate); | |
1233 | memcpy (p, candidate, len); | |
1234 | p[len] = ' '; | |
1235 | p += len + 1; | |
1236 | } | |
1237 | p[-1] = '\0'; | |
1238 | return find_closest_string (arg, &candidates); | |
1239 | } | |
1240 | ||
31ba81bd | 1241 | /* Perform diagnostics for read_cmdline_option and control_warning_option |
1242 | functions. Returns true if an error has been diagnosed. | |
1243 | LOC and LANG_MASK arguments like in read_cmdline_option. | |
1244 | OPTION is the option to report diagnostics for, OPT the name | |
1245 | of the option as text, ARG the argument of the option (for joined | |
1246 | options), ERRORS is bitmask of CL_ERR_* values. */ | |
b78351e5 | 1247 | |
31ba81bd | 1248 | static bool |
1249 | cmdline_handle_error (location_t loc, const struct cl_option *option, | |
1250 | const char *opt, const char *arg, int errors, | |
1251 | unsigned int lang_mask) | |
b78351e5 | 1252 | { |
31ba81bd | 1253 | if (errors & CL_ERR_DISABLED) |
b78351e5 | 1254 | { |
62c34df8 | 1255 | error_at (loc, "command-line option %qs" |
31ba81bd | 1256 | " is not supported by this configuration", opt); |
1257 | return true; | |
b78351e5 | 1258 | } |
1259 | ||
31ba81bd | 1260 | if (errors & CL_ERR_MISSING_ARG) |
b78351e5 | 1261 | { |
1262 | if (option->missing_argument_error) | |
3c6c0e40 | 1263 | error_at (loc, option->missing_argument_error, opt); |
b78351e5 | 1264 | else |
3c6c0e40 | 1265 | error_at (loc, "missing argument to %qs", opt); |
31ba81bd | 1266 | return true; |
b78351e5 | 1267 | } |
1268 | ||
31ba81bd | 1269 | if (errors & CL_ERR_UINT_ARG) |
b78351e5 | 1270 | { |
8e18705e | 1271 | if (option->cl_byte_size) |
1272 | error_at (loc, "argument to %qs should be a non-negative integer " | |
1273 | "optionally followed by a size unit", | |
1274 | option->opt_text); | |
1275 | else | |
1276 | error_at (loc, "argument to %qs should be a non-negative integer", | |
1277 | option->opt_text); | |
31ba81bd | 1278 | return true; |
b78351e5 | 1279 | } |
1280 | ||
52368c34 | 1281 | if (errors & CL_ERR_INT_RANGE_ARG) |
1282 | { | |
1283 | error_at (loc, "argument to %qs is not between %d and %d", | |
1284 | option->opt_text, option->range_min, option->range_max); | |
1285 | return true; | |
1286 | } | |
1287 | ||
31ba81bd | 1288 | if (errors & CL_ERR_ENUM_ARG) |
d62a5950 | 1289 | { |
1290 | const struct cl_enum *e = &cl_enums[option->var_enum]; | |
1291 | unsigned int i; | |
afbacb06 | 1292 | char *s; |
d62a5950 | 1293 | |
bc35ef65 | 1294 | auto_diagnostic_group d; |
d62a5950 | 1295 | if (e->unknown_error) |
31ba81bd | 1296 | error_at (loc, e->unknown_error, arg); |
d62a5950 | 1297 | else |
1298 | error_at (loc, "unrecognized argument in option %qs", opt); | |
1299 | ||
56f34f03 | 1300 | auto_vec <const char *> candidates; |
d62a5950 | 1301 | for (i = 0; e->values[i].arg != NULL; i++) |
1302 | { | |
60a45807 | 1303 | if (!enum_arg_ok_for_language (&e->values[i], lang_mask)) |
1304 | continue; | |
56f34f03 | 1305 | candidates.safe_push (e->values[i].arg); |
d62a5950 | 1306 | } |
afbacb06 | 1307 | const char *hint = candidates_list_and_hint (arg, s, candidates); |
56f34f03 | 1308 | if (hint) |
1309 | inform (loc, "valid arguments to %qs are: %s; did you mean %qs?", | |
1310 | option->opt_text, s, hint); | |
1311 | else | |
1312 | inform (loc, "valid arguments to %qs are: %s", option->opt_text, s); | |
afbacb06 | 1313 | XDELETEVEC (s); |
56f34f03 | 1314 | |
31ba81bd | 1315 | return true; |
1316 | } | |
1317 | ||
1318 | return false; | |
1319 | } | |
1320 | ||
1321 | /* Handle the switch DECODED (location LOC) for the language indicated | |
1322 | by LANG_MASK, using the handlers in *HANDLERS and setting fields in | |
1323 | OPTS and OPTS_SET and using diagnostic context DC (if not NULL) for | |
1324 | diagnostic options. */ | |
1325 | ||
1326 | void | |
1327 | read_cmdline_option (struct gcc_options *opts, | |
1328 | struct gcc_options *opts_set, | |
1329 | struct cl_decoded_option *decoded, | |
1330 | location_t loc, | |
1331 | unsigned int lang_mask, | |
1332 | const struct cl_option_handlers *handlers, | |
1333 | diagnostic_context *dc) | |
1334 | { | |
1335 | const struct cl_option *option; | |
1336 | const char *opt = decoded->orig_option_with_args_text; | |
1337 | ||
1338 | if (decoded->warn_message) | |
1339 | warning_at (loc, 0, decoded->warn_message, opt); | |
1340 | ||
1341 | if (decoded->opt_index == OPT_SPECIAL_unknown) | |
1342 | { | |
1343 | if (handlers->unknown_option_callback (decoded)) | |
62c34df8 | 1344 | error_at (loc, "unrecognized command-line option %qs", decoded->arg); |
d62a5950 | 1345 | return; |
1346 | } | |
1347 | ||
31ba81bd | 1348 | if (decoded->opt_index == OPT_SPECIAL_ignore) |
1349 | return; | |
1350 | ||
0c46a085 | 1351 | if (decoded->opt_index == OPT_SPECIAL_deprecated) |
1352 | { | |
1353 | /* Warn only about positive ignored options. */ | |
1354 | if (decoded->value) | |
1355 | warning_at (loc, 0, "switch %qs is no longer supported", opt); | |
1356 | return; | |
1357 | } | |
1358 | ||
31ba81bd | 1359 | option = &cl_options[decoded->opt_index]; |
1360 | ||
1361 | if (decoded->errors | |
1362 | && cmdline_handle_error (loc, option, opt, decoded->arg, | |
1363 | decoded->errors, lang_mask)) | |
1364 | return; | |
1365 | ||
5585cfe8 | 1366 | if (decoded->errors & CL_ERR_WRONG_LANG) |
1367 | { | |
1368 | handlers->wrong_lang_callback (decoded, lang_mask); | |
1369 | return; | |
1370 | } | |
1371 | ||
b78351e5 | 1372 | gcc_assert (!decoded->errors); |
1373 | ||
f83b64ca | 1374 | if (!handle_option (opts, opts_set, decoded, lang_mask, DK_UNSPECIFIED, |
3c6c0e40 | 1375 | loc, handlers, false, dc)) |
62c34df8 | 1376 | error_at (loc, "unrecognized command-line option %qs", opt); |
b78351e5 | 1377 | } |
1378 | ||
f83b64ca | 1379 | /* Set any field in OPTS, and OPTS_SET if not NULL, for option |
3c6c0e40 | 1380 | OPT_INDEX according to VALUE and ARG, diagnostic kind KIND, |
1381 | location LOC, using diagnostic context DC if not NULL for | |
1382 | diagnostic classification. */ | |
b78351e5 | 1383 | |
1384 | void | |
f83b64ca | 1385 | set_option (struct gcc_options *opts, struct gcc_options *opts_set, |
8e18705e | 1386 | int opt_index, HOST_WIDE_INT value, const char *arg, int kind, |
3c6c0e40 | 1387 | location_t loc, diagnostic_context *dc) |
b78351e5 | 1388 | { |
1389 | const struct cl_option *option = &cl_options[opt_index]; | |
2c5d2e39 | 1390 | void *flag_var = option_flag_var (opt_index, opts); |
f83b64ca | 1391 | void *set_flag_var = NULL; |
b78351e5 | 1392 | |
2c5d2e39 | 1393 | if (!flag_var) |
b78351e5 | 1394 | return; |
1395 | ||
e472ce46 | 1396 | if ((diagnostic_t) kind != DK_UNSPECIFIED && dc != NULL) |
1397 | diagnostic_classify_diagnostic (dc, opt_index, (diagnostic_t) kind, loc); | |
1398 | ||
f83b64ca | 1399 | if (opts_set != NULL) |
1400 | set_flag_var = option_flag_var (opt_index, opts_set); | |
1401 | ||
b78351e5 | 1402 | switch (option->var_type) |
1403 | { | |
1404 | case CLVC_BOOLEAN: | |
8e18705e | 1405 | if (option->cl_host_wide_int) |
1406 | { | |
1407 | *(HOST_WIDE_INT *) flag_var = value; | |
1408 | if (set_flag_var) | |
1409 | *(HOST_WIDE_INT *) set_flag_var = 1; | |
1410 | } | |
1411 | else | |
1412 | { | |
1413 | *(int *) flag_var = value; | |
1414 | if (set_flag_var) | |
1415 | *(int *) set_flag_var = 1; | |
1416 | } | |
1417 | ||
1418 | break; | |
1419 | ||
1420 | case CLVC_SIZE: | |
1421 | if (option->cl_host_wide_int) | |
1422 | { | |
1423 | *(HOST_WIDE_INT *) flag_var = value; | |
1424 | if (set_flag_var) | |
1425 | *(HOST_WIDE_INT *) set_flag_var = value; | |
1426 | } | |
1427 | else | |
1428 | { | |
1429 | *(int *) flag_var = value; | |
1430 | if (set_flag_var) | |
1431 | *(int *) set_flag_var = value; | |
1432 | } | |
1433 | ||
b78351e5 | 1434 | break; |
1435 | ||
1436 | case CLVC_EQUAL: | |
8e18705e | 1437 | if (option->cl_host_wide_int) |
1438 | { | |
1439 | *(HOST_WIDE_INT *) flag_var = (value | |
1440 | ? option->var_value | |
1441 | : !option->var_value); | |
1442 | if (set_flag_var) | |
1443 | *(HOST_WIDE_INT *) set_flag_var = 1; | |
1444 | } | |
72ec6882 | 1445 | else |
8e18705e | 1446 | { |
1447 | *(int *) flag_var = (value | |
1448 | ? option->var_value | |
1449 | : !option->var_value); | |
1450 | if (set_flag_var) | |
1451 | *(int *) set_flag_var = 1; | |
1452 | } | |
b78351e5 | 1453 | break; |
1454 | ||
1455 | case CLVC_BIT_CLEAR: | |
1456 | case CLVC_BIT_SET: | |
1457 | if ((value != 0) == (option->var_type == CLVC_BIT_SET)) | |
72ec6882 | 1458 | { |
1459 | if (option->cl_host_wide_int) | |
1460 | *(HOST_WIDE_INT *) flag_var |= option->var_value; | |
1461 | else | |
1462 | *(int *) flag_var |= option->var_value; | |
1463 | } | |
b78351e5 | 1464 | else |
72ec6882 | 1465 | { |
1466 | if (option->cl_host_wide_int) | |
1467 | *(HOST_WIDE_INT *) flag_var &= ~option->var_value; | |
1468 | else | |
1469 | *(int *) flag_var &= ~option->var_value; | |
1470 | } | |
f83b64ca | 1471 | if (set_flag_var) |
72ec6882 | 1472 | { |
1473 | if (option->cl_host_wide_int) | |
1474 | *(HOST_WIDE_INT *) set_flag_var |= option->var_value; | |
1475 | else | |
1476 | *(int *) set_flag_var |= option->var_value; | |
1477 | } | |
b78351e5 | 1478 | break; |
1479 | ||
1480 | case CLVC_STRING: | |
2c5d2e39 | 1481 | *(const char **) flag_var = arg; |
f83b64ca | 1482 | if (set_flag_var) |
1483 | *(const char **) set_flag_var = ""; | |
b78351e5 | 1484 | break; |
f0da0668 | 1485 | |
d62a5950 | 1486 | case CLVC_ENUM: |
1487 | { | |
1488 | const struct cl_enum *e = &cl_enums[option->var_enum]; | |
1489 | ||
1490 | e->set (flag_var, value); | |
1491 | if (set_flag_var) | |
1492 | e->set (set_flag_var, 1); | |
1493 | } | |
1494 | break; | |
1495 | ||
f0da0668 | 1496 | case CLVC_DEFER: |
1497 | { | |
f1f41a6c | 1498 | vec<cl_deferred_option> *v |
1499 | = (vec<cl_deferred_option> *) *(void **) flag_var; | |
e82e4eb5 | 1500 | cl_deferred_option p = {opt_index, arg, value}; |
f1f41a6c | 1501 | if (!v) |
1502 | v = XCNEW (vec<cl_deferred_option>); | |
1503 | v->safe_push (p); | |
1504 | *(void **) flag_var = v; | |
f0da0668 | 1505 | if (set_flag_var) |
f1f41a6c | 1506 | *(void **) set_flag_var = v; |
f0da0668 | 1507 | } |
1508 | break; | |
b78351e5 | 1509 | } |
b78351e5 | 1510 | } |
2c5d2e39 | 1511 | |
1512 | /* Return the address of the flag variable for option OPT_INDEX in | |
1513 | options structure OPTS, or NULL if there is no flag variable. */ | |
1514 | ||
1515 | void * | |
1516 | option_flag_var (int opt_index, struct gcc_options *opts) | |
1517 | { | |
1518 | const struct cl_option *option = &cl_options[opt_index]; | |
1519 | ||
1520 | if (option->flag_var_offset == (unsigned short) -1) | |
1521 | return NULL; | |
1522 | return (void *)(((char *) opts) + option->flag_var_offset); | |
1523 | } | |
c123f04d | 1524 | |
79396169 | 1525 | /* Return 1 if option OPT_IDX is enabled in OPTS, 0 if it is disabled, |
1526 | or -1 if it isn't a simple on-off switch. */ | |
1527 | ||
1528 | int | |
a02d8e72 | 1529 | option_enabled (int opt_idx, unsigned lang_mask, void *opts) |
79396169 | 1530 | { |
1531 | const struct cl_option *option = &(cl_options[opt_idx]); | |
a02d8e72 | 1532 | |
1533 | /* A language-specific option can only be considered enabled when it's | |
1534 | valid for the current language. */ | |
1535 | if (option->flags & CL_LANG_ALL && !(option->flags | lang_mask)) | |
1536 | return 0; | |
1537 | ||
79396169 | 1538 | struct gcc_options *optsg = (struct gcc_options *) opts; |
1539 | void *flag_var = option_flag_var (opt_idx, optsg); | |
1540 | ||
1541 | if (flag_var) | |
1542 | switch (option->var_type) | |
1543 | { | |
1544 | case CLVC_BOOLEAN: | |
8e18705e | 1545 | if (option->cl_host_wide_int) |
1546 | return *(HOST_WIDE_INT *) flag_var != 0; | |
1547 | else | |
1548 | return *(int *) flag_var != 0; | |
79396169 | 1549 | |
1550 | case CLVC_EQUAL: | |
72ec6882 | 1551 | if (option->cl_host_wide_int) |
1552 | return *(HOST_WIDE_INT *) flag_var == option->var_value; | |
1553 | else | |
1554 | return *(int *) flag_var == option->var_value; | |
79396169 | 1555 | |
1556 | case CLVC_BIT_CLEAR: | |
72ec6882 | 1557 | if (option->cl_host_wide_int) |
1558 | return (*(HOST_WIDE_INT *) flag_var & option->var_value) == 0; | |
1559 | else | |
1560 | return (*(int *) flag_var & option->var_value) == 0; | |
79396169 | 1561 | |
1562 | case CLVC_BIT_SET: | |
72ec6882 | 1563 | if (option->cl_host_wide_int) |
1564 | return (*(HOST_WIDE_INT *) flag_var & option->var_value) != 0; | |
1565 | else | |
1566 | return (*(int *) flag_var & option->var_value) != 0; | |
79396169 | 1567 | |
8e18705e | 1568 | case CLVC_SIZE: |
1569 | if (option->cl_host_wide_int) | |
1570 | return *(HOST_WIDE_INT *) flag_var != -1; | |
1571 | else | |
1572 | return *(int *) flag_var != -1; | |
1573 | ||
79396169 | 1574 | case CLVC_STRING: |
d62a5950 | 1575 | case CLVC_ENUM: |
79396169 | 1576 | case CLVC_DEFER: |
1577 | break; | |
1578 | } | |
1579 | return -1; | |
1580 | } | |
1581 | ||
1582 | /* Fill STATE with the current state of option OPTION in OPTS. Return | |
1583 | true if there is some state to store. */ | |
1584 | ||
1585 | bool | |
1586 | get_option_state (struct gcc_options *opts, int option, | |
1587 | struct cl_option_state *state) | |
1588 | { | |
1589 | void *flag_var = option_flag_var (option, opts); | |
1590 | ||
1591 | if (flag_var == 0) | |
1592 | return false; | |
1593 | ||
1594 | switch (cl_options[option].var_type) | |
1595 | { | |
1596 | case CLVC_BOOLEAN: | |
1597 | case CLVC_EQUAL: | |
8e18705e | 1598 | case CLVC_SIZE: |
79396169 | 1599 | state->data = flag_var; |
72ec6882 | 1600 | state->size = (cl_options[option].cl_host_wide_int |
1601 | ? sizeof (HOST_WIDE_INT) | |
1602 | : sizeof (int)); | |
79396169 | 1603 | break; |
1604 | ||
1605 | case CLVC_BIT_CLEAR: | |
1606 | case CLVC_BIT_SET: | |
a02d8e72 | 1607 | state->ch = option_enabled (option, -1, opts); |
79396169 | 1608 | state->data = &state->ch; |
1609 | state->size = 1; | |
1610 | break; | |
1611 | ||
1612 | case CLVC_STRING: | |
1613 | state->data = *(const char **) flag_var; | |
1614 | if (state->data == 0) | |
1615 | state->data = ""; | |
1616 | state->size = strlen ((const char *) state->data) + 1; | |
1617 | break; | |
1618 | ||
d62a5950 | 1619 | case CLVC_ENUM: |
1620 | state->data = flag_var; | |
1621 | state->size = cl_enums[cl_options[option].var_enum].var_size; | |
1622 | break; | |
1623 | ||
79396169 | 1624 | case CLVC_DEFER: |
1625 | return false; | |
1626 | } | |
1627 | return true; | |
1628 | } | |
1629 | ||
c123f04d | 1630 | /* Set a warning option OPT_INDEX (language mask LANG_MASK, option |
1631 | handlers HANDLERS) to have diagnostic kind KIND for option | |
1632 | structures OPTS and OPTS_SET and diagnostic context DC (possibly | |
31ba81bd | 1633 | NULL), at location LOC (UNKNOWN_LOCATION for -Werror=). ARG is the |
1634 | argument of the option for joined options, or NULL otherwise. If IMPLY, | |
c123f04d | 1635 | the warning option in question is implied at this point. This is |
1636 | used by -Werror= and #pragma GCC diagnostic. */ | |
1637 | ||
1638 | void | |
31ba81bd | 1639 | control_warning_option (unsigned int opt_index, int kind, const char *arg, |
1640 | bool imply, location_t loc, unsigned int lang_mask, | |
c123f04d | 1641 | const struct cl_option_handlers *handlers, |
1642 | struct gcc_options *opts, | |
1643 | struct gcc_options *opts_set, | |
1644 | diagnostic_context *dc) | |
1645 | { | |
1646 | if (cl_options[opt_index].alias_target != N_OPTS) | |
7ca909c6 | 1647 | { |
1648 | gcc_assert (!cl_options[opt_index].cl_separate_alias | |
1649 | && !cl_options[opt_index].cl_negative_alias); | |
1650 | if (cl_options[opt_index].alias_arg) | |
1651 | arg = cl_options[opt_index].alias_arg; | |
1652 | opt_index = cl_options[opt_index].alias_target; | |
1653 | } | |
0c46a085 | 1654 | if (opt_index == OPT_SPECIAL_ignore || opt_index == OPT_SPECIAL_deprecated) |
c123f04d | 1655 | return; |
1656 | if (dc) | |
1657 | diagnostic_classify_diagnostic (dc, opt_index, (diagnostic_t) kind, loc); | |
1658 | if (imply) | |
1659 | { | |
31ba81bd | 1660 | const struct cl_option *option = &cl_options[opt_index]; |
1661 | ||
c123f04d | 1662 | /* -Werror=foo implies -Wfoo. */ |
8e18705e | 1663 | if (option->var_type == CLVC_BOOLEAN |
1664 | || option->var_type == CLVC_ENUM | |
1665 | || option->var_type == CLVC_SIZE) | |
31ba81bd | 1666 | { |
8e18705e | 1667 | HOST_WIDE_INT value = 1; |
31ba81bd | 1668 | |
1669 | if (arg && *arg == '\0' && !option->cl_missing_ok) | |
1670 | arg = NULL; | |
1671 | ||
1672 | if ((option->flags & CL_JOINED) && arg == NULL) | |
1673 | { | |
1674 | cmdline_handle_error (loc, option, option->opt_text, arg, | |
1675 | CL_ERR_MISSING_ARG, lang_mask); | |
1676 | return; | |
1677 | } | |
1678 | ||
8e18705e | 1679 | /* If the switch takes an integer argument, convert it. */ |
1680 | if (arg && (option->cl_uinteger || option->cl_host_wide_int)) | |
31ba81bd | 1681 | { |
8e18705e | 1682 | int error = 0; |
1683 | value = *arg ? integral_argument (arg, &error, | |
1684 | option->cl_byte_size) : 0; | |
1685 | if (error) | |
31ba81bd | 1686 | { |
1687 | cmdline_handle_error (loc, option, option->opt_text, arg, | |
1688 | CL_ERR_UINT_ARG, lang_mask); | |
1689 | return; | |
1690 | } | |
1691 | } | |
1692 | ||
1693 | /* If the switch takes an enumerated argument, convert it. */ | |
1694 | if (arg && option->var_type == CLVC_ENUM) | |
1695 | { | |
1696 | const struct cl_enum *e = &cl_enums[option->var_enum]; | |
1697 | ||
1698 | if (enum_arg_to_value (e->values, arg, &value, lang_mask)) | |
1699 | { | |
1700 | const char *carg = NULL; | |
1701 | ||
1702 | if (enum_value_to_arg (e->values, &carg, value, lang_mask)) | |
1703 | arg = carg; | |
1704 | gcc_assert (carg != NULL); | |
1705 | } | |
1706 | else | |
1707 | { | |
1708 | cmdline_handle_error (loc, option, option->opt_text, arg, | |
1709 | CL_ERR_ENUM_ARG, lang_mask); | |
1710 | return; | |
1711 | } | |
1712 | } | |
1713 | ||
1714 | handle_generated_option (opts, opts_set, | |
1715 | opt_index, arg, value, lang_mask, | |
09fd09eb | 1716 | kind, loc, handlers, false, dc); |
31ba81bd | 1717 | } |
c123f04d | 1718 | } |
1719 | } |