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