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14c7833c | 1 | /* Command line option handling. |
5624e564 | 2 | Copyright (C) 2006-2015 Free Software Foundation, Inc. |
14c7833c L |
3 | |
4 | This file is part of GCC. | |
5 | ||
6 | GCC is free software; you can redistribute it and/or modify it under | |
7 | the terms of the GNU General Public License as published by the Free | |
9dcd6f09 | 8 | Software Foundation; either version 3, or (at your option) any later |
14c7833c L |
9 | version. |
10 | ||
11 | GCC is distributed in the hope that it will be useful, but WITHOUT ANY | |
12 | WARRANTY; without even the implied warranty of MERCHANTABILITY or | |
13 | FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License | |
14 | for more details. | |
15 | ||
16 | You should have received a copy of the GNU General Public License | |
9dcd6f09 NC |
17 | along with GCC; see the file COPYING3. If not see |
18 | <http://www.gnu.org/licenses/>. */ | |
14c7833c L |
19 | |
20 | #include "config.h" | |
21 | #include "system.h" | |
22 | #include "intl.h" | |
23 | #include "coretypes.h" | |
24 | #include "opts.h" | |
a75bfaa6 | 25 | #include "flags.h" |
5f20c657 | 26 | #include "diagnostic.h" |
14c7833c | 27 | |
60cf253a JM |
28 | static void prune_options (struct cl_decoded_option **, unsigned int *); |
29 | ||
14c7833c | 30 | /* Perform a binary search to find which option the command-line INPUT |
6e2f1956 JM |
31 | matches. Returns its index in the option array, and |
32 | OPT_SPECIAL_unknown on failure. | |
14c7833c L |
33 | |
34 | This routine is quite subtle. A normal binary search is not good | |
35 | enough because some options can be suffixed with an argument, and | |
36 | multiple sub-matches can occur, e.g. input of "-pedantic" matching | |
37 | the initial substring of "-pedantic-errors". | |
38 | ||
39 | A more complicated example is -gstabs. It should match "-g" with | |
40 | an argument of "stabs". Suppose, however, that the number and list | |
41 | of switches are such that the binary search tests "-gen-decls" | |
42 | before having tested "-g". This doesn't match, and as "-gen-decls" | |
43 | is less than "-gstabs", it will become the lower bound of the | |
44 | binary search range, and "-g" will never be seen. To resolve this | |
af47e6ac | 45 | issue, 'optc-gen.awk' makes "-gen-decls" point, via the back_chain member, |
14c7833c L |
46 | to "-g" so that failed searches that end between "-gen-decls" and |
47 | the lexicographically subsequent switch know to go back and see if | |
48 | "-g" causes a match (which it does in this example). | |
49 | ||
50 | This search is done in such a way that the longest match for the | |
51 | front end in question wins. If there is no match for the current | |
52 | front end, the longest match for a different front end is returned | |
53 | (or N_OPTS if none) and the caller emits an error message. */ | |
54 | size_t | |
eb50f63a | 55 | find_opt (const char *input, unsigned int lang_mask) |
14c7833c | 56 | { |
e200444e | 57 | size_t mn, mn_orig, mx, md, opt_len; |
14c7833c L |
58 | size_t match_wrong_lang; |
59 | int comp; | |
60 | ||
61 | mn = 0; | |
62 | mx = cl_options_count; | |
63 | ||
64 | /* Find mn such this lexicographical inequality holds: | |
65 | cl_options[mn] <= input < cl_options[mn + 1]. */ | |
66 | while (mx - mn > 1) | |
67 | { | |
68 | md = (mn + mx) / 2; | |
69 | opt_len = cl_options[md].opt_len; | |
70 | comp = strncmp (input, cl_options[md].opt_text + 1, opt_len); | |
71 | ||
72 | if (comp < 0) | |
73 | mx = md; | |
74 | else | |
75 | mn = md; | |
76 | } | |
77 | ||
e200444e JM |
78 | mn_orig = mn; |
79 | ||
14c7833c | 80 | /* This is the switch that is the best match but for a different |
6e2f1956 JM |
81 | front end, or OPT_SPECIAL_unknown if there is no match at all. */ |
82 | match_wrong_lang = OPT_SPECIAL_unknown; | |
14c7833c L |
83 | |
84 | /* Backtrace the chain of possible matches, returning the longest | |
85 | one, if any, that fits best. With current GCC switches, this | |
86 | loop executes at most twice. */ | |
87 | do | |
88 | { | |
89 | const struct cl_option *opt = &cl_options[mn]; | |
90 | ||
91 | /* Is the input either an exact match or a prefix that takes a | |
92 | joined argument? */ | |
93 | if (!strncmp (input, opt->opt_text + 1, opt->opt_len) | |
94 | && (input[opt->opt_len] == '\0' || (opt->flags & CL_JOINED))) | |
95 | { | |
96 | /* If language is OK, return it. */ | |
97 | if (opt->flags & lang_mask) | |
98 | return mn; | |
99 | ||
100 | /* If we haven't remembered a prior match, remember this | |
101 | one. Any prior match is necessarily better. */ | |
6e2f1956 | 102 | if (match_wrong_lang == OPT_SPECIAL_unknown) |
14c7833c L |
103 | match_wrong_lang = mn; |
104 | } | |
105 | ||
106 | /* Try the next possibility. This is cl_options_count if there | |
107 | are no more. */ | |
108 | mn = opt->back_chain; | |
109 | } | |
110 | while (mn != cl_options_count); | |
111 | ||
e200444e JM |
112 | if (match_wrong_lang == OPT_SPECIAL_unknown && input[0] == '-') |
113 | { | |
114 | /* Long options, starting "--", may be abbreviated if the | |
115 | abbreviation is unambiguous. This only applies to options | |
116 | not taking a joined argument, and abbreviations of "--option" | |
117 | are permitted even if there is a variant "--option=". */ | |
118 | size_t mnc = mn_orig + 1; | |
119 | size_t cmp_len = strlen (input); | |
120 | while (mnc < cl_options_count | |
121 | && strncmp (input, cl_options[mnc].opt_text + 1, cmp_len) == 0) | |
122 | { | |
123 | /* Option matching this abbreviation. OK if it is the first | |
124 | match and that does not take a joined argument, or the | |
125 | second match, taking a joined argument and with only '=' | |
126 | added to the first match; otherwise considered | |
127 | ambiguous. */ | |
128 | if (mnc == mn_orig + 1 | |
129 | && !(cl_options[mnc].flags & CL_JOINED)) | |
130 | match_wrong_lang = mnc; | |
131 | else if (mnc == mn_orig + 2 | |
132 | && match_wrong_lang == mn_orig + 1 | |
133 | && (cl_options[mnc].flags & CL_JOINED) | |
134 | && (cl_options[mnc].opt_len | |
135 | == cl_options[mn_orig + 1].opt_len + 1) | |
136 | && strncmp (cl_options[mnc].opt_text + 1, | |
137 | cl_options[mn_orig + 1].opt_text + 1, | |
138 | cl_options[mn_orig + 1].opt_len) == 0) | |
139 | ; /* OK, as long as there are no more matches. */ | |
140 | else | |
141 | return OPT_SPECIAL_unknown; | |
142 | mnc++; | |
143 | } | |
144 | } | |
145 | ||
6e2f1956 | 146 | /* Return the best wrong match, or OPT_SPECIAL_unknown if none. */ |
14c7833c L |
147 | return match_wrong_lang; |
148 | } | |
149 | ||
317c1849 | 150 | /* If ARG is a non-negative decimal or hexadecimal integer, return its |
5d4b393f JM |
151 | value, otherwise return -1. */ |
152 | ||
153 | int | |
154 | integral_argument (const char *arg) | |
155 | { | |
156 | const char *p = arg; | |
157 | ||
158 | while (*p && ISDIGIT (*p)) | |
159 | p++; | |
160 | ||
161 | if (*p == '\0') | |
162 | return atoi (arg); | |
163 | ||
317c1849 CLT |
164 | /* It wasn't a decimal number - try hexadecimal. */ |
165 | if (arg[0] == '0' && (arg[1] == 'x' || arg[1] == 'X')) | |
166 | { | |
167 | p = arg + 2; | |
168 | while (*p && ISXDIGIT (*p)) | |
169 | p++; | |
170 | ||
171 | if (p != arg + 2 && *p == '\0') | |
172 | return strtol (arg, NULL, 16); | |
173 | } | |
174 | ||
5d4b393f JM |
175 | return -1; |
176 | } | |
177 | ||
d9d16a19 JM |
178 | /* Return whether OPTION is OK for the language given by |
179 | LANG_MASK. */ | |
180 | static bool | |
181 | option_ok_for_language (const struct cl_option *option, | |
182 | unsigned int lang_mask) | |
183 | { | |
184 | if (!(option->flags & lang_mask)) | |
185 | return false; | |
186 | else if ((option->flags & CL_TARGET) | |
187 | && (option->flags & (CL_LANG_ALL | CL_DRIVER)) | |
188 | && !(option->flags & (lang_mask & ~CL_COMMON & ~CL_TARGET))) | |
189 | /* Complain for target flag language mismatches if any languages | |
190 | are specified. */ | |
191 | return false; | |
192 | return true; | |
193 | } | |
194 | ||
e6d4b984 JM |
195 | /* Return whether ENUM_ARG is OK for the language given by |
196 | LANG_MASK. */ | |
197 | ||
198 | static bool | |
199 | enum_arg_ok_for_language (const struct cl_enum_arg *enum_arg, | |
200 | unsigned int lang_mask) | |
201 | { | |
202 | return (lang_mask & CL_DRIVER) || !(enum_arg->flags & CL_ENUM_DRIVER_ONLY); | |
203 | } | |
204 | ||
205 | /* Look up ARG in ENUM_ARGS for language LANG_MASK, returning true and | |
206 | storing the value in *VALUE if found, and returning false without | |
207 | modifying *VALUE if not found. */ | |
208 | ||
209 | static bool | |
210 | enum_arg_to_value (const struct cl_enum_arg *enum_args, | |
211 | const char *arg, int *value, unsigned int lang_mask) | |
212 | { | |
213 | unsigned int i; | |
214 | ||
215 | for (i = 0; enum_args[i].arg != NULL; i++) | |
216 | if (strcmp (arg, enum_args[i].arg) == 0 | |
217 | && enum_arg_ok_for_language (&enum_args[i], lang_mask)) | |
218 | { | |
219 | *value = enum_args[i].value; | |
220 | return true; | |
221 | } | |
222 | ||
223 | return false; | |
224 | } | |
225 | ||
8023568e JM |
226 | /* Look up ARG in the enum used by option OPT_INDEX for language |
227 | LANG_MASK, returning true and storing the value in *VALUE if found, | |
228 | and returning false without modifying *VALUE if not found. */ | |
229 | ||
230 | bool | |
231 | opt_enum_arg_to_value (size_t opt_index, const char *arg, int *value, | |
232 | unsigned int lang_mask) | |
233 | { | |
234 | const struct cl_option *option = &cl_options[opt_index]; | |
235 | ||
236 | gcc_assert (option->var_type == CLVC_ENUM); | |
237 | ||
238 | return enum_arg_to_value (cl_enums[option->var_enum].values, arg, | |
239 | value, lang_mask); | |
240 | } | |
241 | ||
e6d4b984 JM |
242 | /* Look of VALUE in ENUM_ARGS for language LANG_MASK and store the |
243 | corresponding string in *ARGP, returning true if the found string | |
244 | was marked as canonical, false otherwise. If VALUE is not found | |
245 | (which may be the case for uninitialized values if the relevant | |
246 | option has not been passed), set *ARGP to NULL and return | |
247 | false. */ | |
248 | ||
249 | bool | |
250 | enum_value_to_arg (const struct cl_enum_arg *enum_args, | |
251 | const char **argp, int value, unsigned int lang_mask) | |
252 | { | |
253 | unsigned int i; | |
254 | ||
255 | for (i = 0; enum_args[i].arg != NULL; i++) | |
256 | if (enum_args[i].value == value | |
257 | && (enum_args[i].flags & CL_ENUM_CANONICAL) | |
258 | && enum_arg_ok_for_language (&enum_args[i], lang_mask)) | |
259 | { | |
260 | *argp = enum_args[i].arg; | |
261 | return true; | |
262 | } | |
263 | ||
264 | for (i = 0; enum_args[i].arg != NULL; i++) | |
265 | if (enum_args[i].value == value | |
266 | && enum_arg_ok_for_language (&enum_args[i], lang_mask)) | |
267 | { | |
268 | *argp = enum_args[i].arg; | |
269 | return false; | |
270 | } | |
271 | ||
272 | *argp = NULL; | |
273 | return false; | |
274 | } | |
5de8299c JM |
275 | |
276 | /* Fill in the canonical option part of *DECODED with an option | |
277 | described by OPT_INDEX, ARG and VALUE. */ | |
278 | ||
279 | static void | |
280 | generate_canonical_option (size_t opt_index, const char *arg, int value, | |
281 | struct cl_decoded_option *decoded) | |
282 | { | |
283 | const struct cl_option *option = &cl_options[opt_index]; | |
284 | const char *opt_text = option->opt_text; | |
285 | ||
286 | if (value == 0 | |
300d83d9 | 287 | && !option->cl_reject_negative |
5de8299c JM |
288 | && (opt_text[1] == 'W' || opt_text[1] == 'f' || opt_text[1] == 'm')) |
289 | { | |
dc357798 | 290 | char *t = XOBNEWVEC (&opts_obstack, char, option->opt_len + 5); |
5de8299c JM |
291 | t[0] = '-'; |
292 | t[1] = opt_text[1]; | |
293 | t[2] = 'n'; | |
294 | t[3] = 'o'; | |
295 | t[4] = '-'; | |
296 | memcpy (t + 5, opt_text + 2, option->opt_len); | |
297 | opt_text = t; | |
298 | } | |
299 | ||
300 | decoded->canonical_option[2] = NULL; | |
301 | decoded->canonical_option[3] = NULL; | |
302 | ||
303 | if (arg) | |
304 | { | |
d1583032 | 305 | if ((option->flags & CL_SEPARATE) |
300d83d9 | 306 | && !option->cl_separate_alias) |
5de8299c JM |
307 | { |
308 | decoded->canonical_option[0] = opt_text; | |
309 | decoded->canonical_option[1] = arg; | |
310 | decoded->canonical_option_num_elements = 2; | |
311 | } | |
312 | else | |
313 | { | |
314 | gcc_assert (option->flags & CL_JOINED); | |
dc357798 | 315 | decoded->canonical_option[0] = opts_concat (opt_text, arg, NULL); |
5de8299c JM |
316 | decoded->canonical_option[1] = NULL; |
317 | decoded->canonical_option_num_elements = 1; | |
318 | } | |
319 | } | |
320 | else | |
321 | { | |
322 | decoded->canonical_option[0] = opt_text; | |
323 | decoded->canonical_option[1] = NULL; | |
324 | decoded->canonical_option_num_elements = 1; | |
325 | } | |
326 | } | |
327 | ||
e200444e JM |
328 | /* Structure describing mappings from options on the command line to |
329 | options to look up with find_opt. */ | |
330 | struct option_map | |
331 | { | |
332 | /* Prefix of the option on the command line. */ | |
333 | const char *opt0; | |
334 | /* If two argv elements are considered to be merged into one option, | |
335 | prefix for the second element, otherwise NULL. */ | |
336 | const char *opt1; | |
337 | /* The new prefix to map to. */ | |
338 | const char *new_prefix; | |
339 | /* Whether at least one character is needed following opt1 or opt0 | |
340 | for this mapping to be used. (--optimize= is valid for -O, but | |
341 | --warn- is not valid for -W.) */ | |
342 | bool another_char_needed; | |
343 | /* Whether the original option is a negated form of the option | |
344 | resulting from this map. */ | |
345 | bool negated; | |
346 | }; | |
347 | static const struct option_map option_map[] = | |
348 | { | |
349 | { "-Wno-", NULL, "-W", false, true }, | |
350 | { "-fno-", NULL, "-f", false, true }, | |
351 | { "-mno-", NULL, "-m", false, true }, | |
352 | { "--debug=", NULL, "-g", false, false }, | |
353 | { "--machine-", NULL, "-m", true, false }, | |
354 | { "--machine-no-", NULL, "-m", false, true }, | |
355 | { "--machine=", NULL, "-m", false, false }, | |
356 | { "--machine=no-", NULL, "-m", false, true }, | |
357 | { "--machine", "", "-m", false, false }, | |
358 | { "--machine", "no-", "-m", false, true }, | |
359 | { "--optimize=", NULL, "-O", false, false }, | |
360 | { "--std=", NULL, "-std=", false, false }, | |
361 | { "--std", "", "-std=", false, false }, | |
362 | { "--warn-", NULL, "-W", true, false }, | |
363 | { "--warn-no-", NULL, "-W", false, true }, | |
364 | { "--", NULL, "-f", true, false }, | |
365 | { "--no-", NULL, "-f", false, true } | |
366 | }; | |
367 | ||
5d4b393f | 368 | /* Decode the switch beginning at ARGV for the language indicated by |
603349bf JM |
369 | LANG_MASK (including CL_COMMON and CL_TARGET if applicable), into |
370 | the structure *DECODED. Returns the number of switches | |
371 | consumed. */ | |
5d4b393f | 372 | |
6e2f1956 | 373 | static unsigned int |
5d4b393f JM |
374 | decode_cmdline_option (const char **argv, unsigned int lang_mask, |
375 | struct cl_decoded_option *decoded) | |
376 | { | |
377 | size_t opt_index; | |
e200444e | 378 | const char *arg = 0; |
5d4b393f | 379 | int value = 1; |
c8967d95 | 380 | unsigned int result = 1, i, extra_args, separate_args = 0; |
e200444e | 381 | int adjust_len = 0; |
eea13ead JM |
382 | size_t total_len; |
383 | char *p; | |
5d4b393f JM |
384 | const struct cl_option *option; |
385 | int errors = 0; | |
2d2bd949 | 386 | const char *warn_message = NULL; |
c878765b JM |
387 | bool separate_arg_flag; |
388 | bool joined_arg_flag; | |
d1583032 | 389 | bool have_separate_arg = false; |
5d4b393f | 390 | |
e200444e | 391 | extra_args = 0; |
5d4b393f | 392 | |
e200444e JM |
393 | opt_index = find_opt (argv[0] + 1, lang_mask); |
394 | i = 0; | |
395 | while (opt_index == OPT_SPECIAL_unknown | |
396 | && i < ARRAY_SIZE (option_map)) | |
5d4b393f | 397 | { |
e200444e JM |
398 | const char *opt0 = option_map[i].opt0; |
399 | const char *opt1 = option_map[i].opt1; | |
400 | const char *new_prefix = option_map[i].new_prefix; | |
401 | bool another_char_needed = option_map[i].another_char_needed; | |
402 | size_t opt0_len = strlen (opt0); | |
403 | size_t opt1_len = (opt1 == NULL ? 0 : strlen (opt1)); | |
404 | size_t optn_len = (opt1 == NULL ? opt0_len : opt1_len); | |
405 | size_t new_prefix_len = strlen (new_prefix); | |
406 | ||
407 | extra_args = (opt1 == NULL ? 0 : 1); | |
408 | value = !option_map[i].negated; | |
409 | ||
410 | if (strncmp (argv[0], opt0, opt0_len) == 0 | |
411 | && (opt1 == NULL | |
412 | || (argv[1] != NULL && strncmp (argv[1], opt1, opt1_len) == 0)) | |
413 | && (!another_char_needed | |
414 | || argv[extra_args][optn_len] != 0)) | |
415 | { | |
416 | size_t arglen = strlen (argv[extra_args]); | |
417 | char *dup; | |
418 | ||
419 | adjust_len = (int) optn_len - (int) new_prefix_len; | |
420 | dup = XNEWVEC (char, arglen + 1 - adjust_len); | |
421 | memcpy (dup, new_prefix, new_prefix_len); | |
422 | memcpy (dup + new_prefix_len, argv[extra_args] + optn_len, | |
423 | arglen - optn_len + 1); | |
424 | opt_index = find_opt (dup + 1, lang_mask); | |
425 | free (dup); | |
426 | } | |
427 | i++; | |
5d4b393f JM |
428 | } |
429 | ||
6e2f1956 JM |
430 | if (opt_index == OPT_SPECIAL_unknown) |
431 | { | |
432 | arg = argv[0]; | |
e200444e JM |
433 | extra_args = 0; |
434 | value = 1; | |
6e2f1956 JM |
435 | goto done; |
436 | } | |
5d4b393f JM |
437 | |
438 | option = &cl_options[opt_index]; | |
439 | ||
440 | /* Reject negative form of switches that don't take negatives as | |
441 | unrecognized. */ | |
300d83d9 | 442 | if (!value && option->cl_reject_negative) |
5d4b393f | 443 | { |
6e2f1956 | 444 | opt_index = OPT_SPECIAL_unknown; |
184eb658 | 445 | errors |= CL_ERR_NEGATIVE; |
6e2f1956 | 446 | arg = argv[0]; |
5d4b393f JM |
447 | goto done; |
448 | } | |
449 | ||
e200444e | 450 | result = extra_args + 1; |
2d2bd949 JM |
451 | warn_message = option->warn_message; |
452 | ||
5d4b393f | 453 | /* Check to see if the option is disabled for this configuration. */ |
300d83d9 | 454 | if (option->cl_disabled) |
5d4b393f JM |
455 | errors |= CL_ERR_DISABLED; |
456 | ||
c878765b | 457 | /* Determine whether there may be a separate argument based on |
c243beb0 JM |
458 | whether this option is being processed for the driver, and, if |
459 | so, how many such arguments. */ | |
c878765b | 460 | separate_arg_flag = ((option->flags & CL_SEPARATE) |
300d83d9 | 461 | && !(option->cl_no_driver_arg |
c878765b | 462 | && (lang_mask & CL_DRIVER))); |
c243beb0 | 463 | separate_args = (separate_arg_flag |
300d83d9 | 464 | ? option->cl_separate_nargs + 1 |
c243beb0 | 465 | : 0); |
c878765b JM |
466 | joined_arg_flag = (option->flags & CL_JOINED) != 0; |
467 | ||
5d4b393f | 468 | /* Sort out any argument the switch takes. */ |
c878765b | 469 | if (joined_arg_flag) |
5d4b393f JM |
470 | { |
471 | /* Have arg point to the original switch. This is because | |
472 | some code, such as disable_builtin_function, expects its | |
473 | argument to be persistent until the program exits. */ | |
e200444e | 474 | arg = argv[extra_args] + cl_options[opt_index].opt_len + 1 + adjust_len; |
5d4b393f | 475 | |
300d83d9 | 476 | if (*arg == '\0' && !option->cl_missing_ok) |
5d4b393f | 477 | { |
c878765b | 478 | if (separate_arg_flag) |
5d4b393f | 479 | { |
e200444e JM |
480 | arg = argv[extra_args + 1]; |
481 | result = extra_args + 2; | |
5d4b393f | 482 | if (arg == NULL) |
e200444e | 483 | result = extra_args + 1; |
d1583032 JM |
484 | else |
485 | have_separate_arg = true; | |
5d4b393f JM |
486 | } |
487 | else | |
488 | /* Missing argument. */ | |
489 | arg = NULL; | |
490 | } | |
491 | } | |
c878765b | 492 | else if (separate_arg_flag) |
5d4b393f | 493 | { |
e200444e | 494 | arg = argv[extra_args + 1]; |
c243beb0 JM |
495 | for (i = 0; i < separate_args; i++) |
496 | if (argv[extra_args + 1 + i] == NULL) | |
497 | { | |
498 | errors |= CL_ERR_MISSING_ARG; | |
499 | break; | |
500 | } | |
501 | result = extra_args + 1 + i; | |
502 | if (arg != NULL) | |
d1583032 | 503 | have_separate_arg = true; |
5d4b393f JM |
504 | } |
505 | ||
5de8299c JM |
506 | if (arg == NULL && (separate_arg_flag || joined_arg_flag)) |
507 | errors |= CL_ERR_MISSING_ARG; | |
508 | ||
2d2bd949 JM |
509 | /* Is this option an alias (or an ignored option, marked as an alias |
510 | of OPT_SPECIAL_ignore)? */ | |
d1583032 | 511 | if (option->alias_target != N_OPTS |
300d83d9 | 512 | && (!option->cl_separate_alias || have_separate_arg)) |
5de8299c JM |
513 | { |
514 | size_t new_opt_index = option->alias_target; | |
5de8299c | 515 | |
2d2bd949 | 516 | if (new_opt_index == OPT_SPECIAL_ignore) |
5de8299c | 517 | { |
2d2bd949 JM |
518 | gcc_assert (option->alias_arg == NULL); |
519 | gcc_assert (option->neg_alias_arg == NULL); | |
520 | opt_index = new_opt_index; | |
521 | arg = NULL; | |
5de8299c JM |
522 | value = 1; |
523 | } | |
2d2bd949 | 524 | else |
5de8299c | 525 | { |
2d2bd949 | 526 | const struct cl_option *new_option = &cl_options[new_opt_index]; |
5de8299c | 527 | |
2d2bd949 | 528 | /* The new option must not be an alias itself. */ |
e200444e | 529 | gcc_assert (new_option->alias_target == N_OPTS |
300d83d9 | 530 | || new_option->cl_separate_alias); |
5de8299c | 531 | |
2d2bd949 JM |
532 | if (option->neg_alias_arg) |
533 | { | |
534 | gcc_assert (option->alias_arg != NULL); | |
535 | gcc_assert (arg == NULL); | |
300d83d9 | 536 | gcc_assert (!option->cl_negative_alias); |
2d2bd949 JM |
537 | if (value) |
538 | arg = option->alias_arg; | |
539 | else | |
540 | arg = option->neg_alias_arg; | |
541 | value = 1; | |
542 | } | |
543 | else if (option->alias_arg) | |
544 | { | |
545 | gcc_assert (value == 1); | |
546 | gcc_assert (arg == NULL); | |
300d83d9 | 547 | gcc_assert (!option->cl_negative_alias); |
2d2bd949 JM |
548 | arg = option->alias_arg; |
549 | } | |
5de8299c | 550 | |
300d83d9 | 551 | if (option->cl_negative_alias) |
666a21a2 JM |
552 | value = !value; |
553 | ||
2d2bd949 JM |
554 | opt_index = new_opt_index; |
555 | option = new_option; | |
5de8299c | 556 | |
2d2bd949 | 557 | if (value == 0) |
300d83d9 | 558 | gcc_assert (!option->cl_reject_negative); |
2d2bd949 JM |
559 | |
560 | /* Recompute what arguments are allowed. */ | |
561 | separate_arg_flag = ((option->flags & CL_SEPARATE) | |
300d83d9 | 562 | && !(option->cl_no_driver_arg |
2d2bd949 JM |
563 | && (lang_mask & CL_DRIVER))); |
564 | joined_arg_flag = (option->flags & CL_JOINED) != 0; | |
565 | ||
300d83d9 | 566 | if (separate_args > 1 || option->cl_separate_nargs) |
c243beb0 | 567 | gcc_assert (separate_args |
300d83d9 | 568 | == (unsigned int) option->cl_separate_nargs + 1); |
c243beb0 | 569 | |
2d2bd949 JM |
570 | if (!(errors & CL_ERR_MISSING_ARG)) |
571 | { | |
572 | if (separate_arg_flag || joined_arg_flag) | |
e200444e | 573 | { |
300d83d9 | 574 | if (option->cl_missing_ok && arg == NULL) |
e200444e JM |
575 | arg = ""; |
576 | gcc_assert (arg != NULL); | |
577 | } | |
2d2bd949 JM |
578 | else |
579 | gcc_assert (arg == NULL); | |
580 | } | |
5de8299c | 581 | |
2d2bd949 JM |
582 | /* Recheck for warnings and disabled options. */ |
583 | if (option->warn_message) | |
584 | { | |
585 | gcc_assert (warn_message == NULL); | |
586 | warn_message = option->warn_message; | |
587 | } | |
300d83d9 | 588 | if (option->cl_disabled) |
2d2bd949 JM |
589 | errors |= CL_ERR_DISABLED; |
590 | } | |
5de8299c JM |
591 | } |
592 | ||
5d4b393f | 593 | /* Check if this is a switch for a different front end. */ |
d9d16a19 | 594 | if (!option_ok_for_language (option, lang_mask)) |
5d4b393f | 595 | errors |= CL_ERR_WRONG_LANG; |
5d4b393f | 596 | |
413519ae JM |
597 | /* Convert the argument to lowercase if appropriate. */ |
598 | if (arg && option->cl_tolower) | |
599 | { | |
600 | size_t j; | |
601 | size_t len = strlen (arg); | |
dc357798 | 602 | char *arg_lower = XOBNEWVEC (&opts_obstack, char, len + 1); |
413519ae JM |
603 | |
604 | for (j = 0; j < len; j++) | |
605 | arg_lower[j] = TOLOWER ((unsigned char) arg[j]); | |
606 | arg_lower[len] = 0; | |
607 | arg = arg_lower; | |
608 | } | |
609 | ||
5d4b393f | 610 | /* If the switch takes an integer, convert it. */ |
300d83d9 | 611 | if (arg && option->cl_uinteger) |
5d4b393f JM |
612 | { |
613 | value = integral_argument (arg); | |
614 | if (value == -1) | |
615 | errors |= CL_ERR_UINT_ARG; | |
616 | } | |
617 | ||
e6d4b984 JM |
618 | /* If the switch takes an enumerated argument, convert it. */ |
619 | if (arg && (option->var_type == CLVC_ENUM)) | |
620 | { | |
621 | const struct cl_enum *e = &cl_enums[option->var_enum]; | |
622 | ||
623 | gcc_assert (value == 1); | |
624 | if (enum_arg_to_value (e->values, arg, &value, lang_mask)) | |
625 | { | |
626 | const char *carg = NULL; | |
627 | ||
628 | if (enum_value_to_arg (e->values, &carg, value, lang_mask)) | |
629 | arg = carg; | |
630 | gcc_assert (carg != NULL); | |
631 | } | |
632 | else | |
633 | errors |= CL_ERR_ENUM_ARG; | |
634 | } | |
635 | ||
5d4b393f | 636 | done: |
5d4b393f JM |
637 | decoded->opt_index = opt_index; |
638 | decoded->arg = arg; | |
639 | decoded->value = value; | |
640 | decoded->errors = errors; | |
2d2bd949 | 641 | decoded->warn_message = warn_message; |
eea13ead JM |
642 | |
643 | if (opt_index == OPT_SPECIAL_unknown) | |
c243beb0 | 644 | gcc_assert (result == 1); |
eea13ead JM |
645 | |
646 | gcc_assert (result >= 1 && result <= ARRAY_SIZE (decoded->canonical_option)); | |
647 | decoded->canonical_option_num_elements = result; | |
648 | total_len = 0; | |
649 | for (i = 0; i < ARRAY_SIZE (decoded->canonical_option); i++) | |
650 | { | |
651 | if (i < result) | |
652 | { | |
7fcf46f5 | 653 | size_t len; |
5de8299c JM |
654 | if (opt_index == OPT_SPECIAL_unknown) |
655 | decoded->canonical_option[i] = argv[i]; | |
656 | else | |
657 | decoded->canonical_option[i] = NULL; | |
7fcf46f5 JZ |
658 | len = strlen (argv[i]); |
659 | /* If the argument is an empty string, we will print it as "" in | |
660 | orig_option_with_args_text. */ | |
661 | total_len += (len != 0 ? len : 2) + 1; | |
eea13ead JM |
662 | } |
663 | else | |
664 | decoded->canonical_option[i] = NULL; | |
665 | } | |
2d2bd949 | 666 | if (opt_index != OPT_SPECIAL_unknown && opt_index != OPT_SPECIAL_ignore) |
c243beb0 JM |
667 | { |
668 | generate_canonical_option (opt_index, arg, value, decoded); | |
669 | if (separate_args > 1) | |
670 | { | |
671 | for (i = 0; i < separate_args; i++) | |
672 | { | |
673 | if (argv[extra_args + 1 + i] == NULL) | |
674 | break; | |
675 | else | |
676 | decoded->canonical_option[1 + i] = argv[extra_args + 1 + i]; | |
677 | } | |
678 | gcc_assert (result == 1 + i); | |
679 | decoded->canonical_option_num_elements = result; | |
680 | } | |
681 | } | |
dc357798 JJ |
682 | decoded->orig_option_with_args_text |
683 | = p = XOBNEWVEC (&opts_obstack, char, total_len); | |
eea13ead JM |
684 | for (i = 0; i < result; i++) |
685 | { | |
686 | size_t len = strlen (argv[i]); | |
687 | ||
7fcf46f5 JZ |
688 | /* Print the empty string verbally. */ |
689 | if (len == 0) | |
690 | { | |
691 | *p++ = '"'; | |
692 | *p++ = '"'; | |
693 | } | |
694 | else | |
695 | memcpy (p, argv[i], len); | |
eea13ead JM |
696 | p += len; |
697 | if (i == result - 1) | |
698 | *p++ = 0; | |
699 | else | |
700 | *p++ = ' '; | |
701 | } | |
702 | ||
5d4b393f JM |
703 | return result; |
704 | } | |
705 | ||
a5d1569a JJ |
706 | /* Obstack for option strings. */ |
707 | ||
708 | struct obstack opts_obstack; | |
709 | ||
710 | /* Like libiberty concat, but allocate using opts_obstack. */ | |
711 | ||
712 | char * | |
713 | opts_concat (const char *first, ...) | |
714 | { | |
715 | char *newstr, *end; | |
716 | size_t length = 0; | |
717 | const char *arg; | |
718 | va_list ap; | |
719 | ||
720 | /* First compute the size of the result and get sufficient memory. */ | |
721 | va_start (ap, first); | |
722 | for (arg = first; arg; arg = va_arg (ap, const char *)) | |
723 | length += strlen (arg); | |
724 | newstr = XOBNEWVEC (&opts_obstack, char, length + 1); | |
725 | va_end (ap); | |
726 | ||
727 | /* Now copy the individual pieces to the result string. */ | |
728 | va_start (ap, first); | |
729 | for (arg = first, end = newstr; arg; arg = va_arg (ap, const char *)) | |
730 | { | |
731 | length = strlen (arg); | |
732 | memcpy (end, arg, length); | |
733 | end += length; | |
734 | } | |
735 | *end = '\0'; | |
736 | va_end (ap); | |
737 | return newstr; | |
738 | } | |
739 | ||
6e2f1956 JM |
740 | /* Decode command-line options (ARGC and ARGV being the arguments of |
741 | main) into an array, setting *DECODED_OPTIONS to a pointer to that | |
742 | array and *DECODED_OPTIONS_COUNT to the number of entries in the | |
743 | array. The first entry in the array is always one for the program | |
744 | name (OPT_SPECIAL_program_name). LANG_MASK indicates the language | |
603349bf JM |
745 | flags applicable for decoding (including CL_COMMON and CL_TARGET if |
746 | those options should be considered applicable). Do not produce any | |
747 | diagnostics or set state outside of these variables. */ | |
6e2f1956 JM |
748 | |
749 | void | |
750 | decode_cmdline_options_to_array (unsigned int argc, const char **argv, | |
751 | unsigned int lang_mask, | |
752 | struct cl_decoded_option **decoded_options, | |
753 | unsigned int *decoded_options_count) | |
754 | { | |
2be55a25 | 755 | unsigned int n, i; |
6e2f1956 JM |
756 | struct cl_decoded_option *opt_array; |
757 | unsigned int num_decoded_options; | |
758 | ||
759 | opt_array = XNEWVEC (struct cl_decoded_option, argc); | |
760 | ||
761 | opt_array[0].opt_index = OPT_SPECIAL_program_name; | |
2d2bd949 | 762 | opt_array[0].warn_message = NULL; |
6e2f1956 JM |
763 | opt_array[0].arg = argv[0]; |
764 | opt_array[0].orig_option_with_args_text = argv[0]; | |
eea13ead | 765 | opt_array[0].canonical_option_num_elements = 1; |
7a9bf9a4 JM |
766 | opt_array[0].canonical_option[0] = argv[0]; |
767 | opt_array[0].canonical_option[1] = NULL; | |
eea13ead JM |
768 | opt_array[0].canonical_option[2] = NULL; |
769 | opt_array[0].canonical_option[3] = NULL; | |
6e2f1956 JM |
770 | opt_array[0].value = 1; |
771 | opt_array[0].errors = 0; | |
772 | num_decoded_options = 1; | |
773 | ||
774 | for (i = 1; i < argc; i += n) | |
775 | { | |
776 | const char *opt = argv[i]; | |
777 | ||
778 | /* Interpret "-" or a non-switch as a file name. */ | |
779 | if (opt[0] != '-' || opt[1] == '\0') | |
780 | { | |
d9d16a19 | 781 | generate_option_input_file (opt, &opt_array[num_decoded_options]); |
6e2f1956 JM |
782 | num_decoded_options++; |
783 | n = 1; | |
784 | continue; | |
785 | } | |
786 | ||
787 | n = decode_cmdline_option (argv + i, lang_mask, | |
788 | &opt_array[num_decoded_options]); | |
789 | num_decoded_options++; | |
790 | } | |
791 | ||
6e2f1956 JM |
792 | *decoded_options = opt_array; |
793 | *decoded_options_count = num_decoded_options; | |
60cf253a | 794 | prune_options (decoded_options, decoded_options_count); |
6e2f1956 JM |
795 | } |
796 | ||
14c7833c L |
797 | /* Return true if NEXT_OPT_IDX cancels OPT_IDX. Return false if the |
798 | next one is the same as ORIG_NEXT_OPT_IDX. */ | |
799 | ||
800 | static bool | |
801 | cancel_option (int opt_idx, int next_opt_idx, int orig_next_opt_idx) | |
802 | { | |
803 | /* An option can be canceled by the same option or an option with | |
804 | Negative. */ | |
805 | if (cl_options [next_opt_idx].neg_index == opt_idx) | |
806 | return true; | |
807 | ||
808 | if (cl_options [next_opt_idx].neg_index != orig_next_opt_idx) | |
809 | return cancel_option (opt_idx, cl_options [next_opt_idx].neg_index, | |
810 | orig_next_opt_idx); | |
b8698a0f | 811 | |
14c7833c L |
812 | return false; |
813 | } | |
814 | ||
815 | /* Filter out options canceled by the ones after them. */ | |
816 | ||
60cf253a JM |
817 | static void |
818 | prune_options (struct cl_decoded_option **decoded_options, | |
819 | unsigned int *decoded_options_count) | |
14c7833c | 820 | { |
60cf253a JM |
821 | unsigned int old_decoded_options_count = *decoded_options_count; |
822 | struct cl_decoded_option *old_decoded_options = *decoded_options; | |
823 | unsigned int new_decoded_options_count; | |
824 | struct cl_decoded_option *new_decoded_options | |
825 | = XNEWVEC (struct cl_decoded_option, old_decoded_options_count); | |
826 | unsigned int i; | |
14c7833c | 827 | const struct cl_option *option; |
14c7833c L |
828 | |
829 | /* Remove arguments which are negated by others after them. */ | |
60cf253a JM |
830 | new_decoded_options_count = 0; |
831 | for (i = 0; i < old_decoded_options_count; i++) | |
14c7833c | 832 | { |
60cf253a JM |
833 | unsigned int j, opt_idx, next_opt_idx; |
834 | ||
835 | if (old_decoded_options[i].errors & ~CL_ERR_WRONG_LANG) | |
836 | goto keep; | |
14c7833c | 837 | |
60cf253a JM |
838 | opt_idx = old_decoded_options[i].opt_index; |
839 | switch (opt_idx) | |
14c7833c | 840 | { |
60cf253a JM |
841 | case OPT_SPECIAL_unknown: |
842 | case OPT_SPECIAL_ignore: | |
843 | case OPT_SPECIAL_program_name: | |
844 | case OPT_SPECIAL_input_file: | |
845 | goto keep; | |
846 | ||
847 | default: | |
848 | gcc_assert (opt_idx < cl_options_count); | |
849 | option = &cl_options[opt_idx]; | |
850 | if (option->neg_index < 0) | |
851 | goto keep; | |
852 | ||
853 | /* Skip joined switches. */ | |
854 | if ((option->flags & CL_JOINED)) | |
855 | goto keep; | |
856 | ||
857 | for (j = i + 1; j < old_decoded_options_count; j++) | |
14c7833c | 858 | { |
60cf253a JM |
859 | if (old_decoded_options[j].errors & ~CL_ERR_WRONG_LANG) |
860 | continue; | |
861 | next_opt_idx = old_decoded_options[j].opt_index; | |
862 | if (next_opt_idx >= cl_options_count) | |
863 | continue; | |
864 | if (cl_options[next_opt_idx].neg_index < 0) | |
865 | continue; | |
866 | if ((cl_options[next_opt_idx].flags & CL_JOINED)) | |
867 | continue; | |
868 | if (cancel_option (opt_idx, next_opt_idx, next_opt_idx)) | |
14c7833c L |
869 | break; |
870 | } | |
60cf253a JM |
871 | if (j == old_decoded_options_count) |
872 | { | |
14c7833c | 873 | keep: |
60cf253a JM |
874 | new_decoded_options[new_decoded_options_count] |
875 | = old_decoded_options[i]; | |
876 | new_decoded_options_count++; | |
877 | } | |
878 | break; | |
14c7833c L |
879 | } |
880 | } | |
881 | ||
60cf253a JM |
882 | free (old_decoded_options); |
883 | new_decoded_options = XRESIZEVEC (struct cl_decoded_option, | |
884 | new_decoded_options, | |
885 | new_decoded_options_count); | |
886 | *decoded_options = new_decoded_options; | |
887 | *decoded_options_count = new_decoded_options_count; | |
14c7833c | 888 | } |
5f20c657 | 889 | |
481e1176 | 890 | /* Handle option DECODED for the language indicated by LANG_MASK, |
d4d24ba4 JM |
891 | using the handlers in HANDLERS and setting fields in OPTS and |
892 | OPTS_SET. KIND is the diagnostic_t if this is a diagnostics | |
a4d8c676 JM |
893 | option, DK_UNSPECIFIED otherwise, and LOC is the location of the |
894 | option for options from the source file, UNKNOWN_LOCATION | |
895 | otherwise. GENERATED_P is true for an option generated as part of | |
896 | processing another option or otherwise generated internally, false | |
897 | for one explicitly passed by the user. Returns false if the switch | |
898 | was invalid. DC is the diagnostic context for options affecting | |
899 | diagnostics state, or NULL. */ | |
5f20c657 | 900 | |
a4d8c676 | 901 | static bool |
46625112 | 902 | handle_option (struct gcc_options *opts, |
d4d24ba4 | 903 | struct gcc_options *opts_set, |
46625112 | 904 | const struct cl_decoded_option *decoded, |
a4d8c676 | 905 | unsigned int lang_mask, int kind, location_t loc, |
d4d24ba4 | 906 | const struct cl_option_handlers *handlers, |
1ebe4b4f | 907 | bool generated_p, diagnostic_context *dc) |
5f20c657 | 908 | { |
481e1176 JM |
909 | size_t opt_index = decoded->opt_index; |
910 | const char *arg = decoded->arg; | |
911 | int value = decoded->value; | |
5f20c657 | 912 | const struct cl_option *option = &cl_options[opt_index]; |
46625112 | 913 | void *flag_var = option_flag_var (opt_index, opts); |
5f20c657 JM |
914 | size_t i; |
915 | ||
46625112 | 916 | if (flag_var) |
d4d24ba4 | 917 | set_option (opts, (generated_p ? NULL : opts_set), |
a4d8c676 | 918 | opt_index, value, arg, kind, loc, dc); |
5f20c657 JM |
919 | |
920 | for (i = 0; i < handlers->num_handlers; i++) | |
921 | if (option->flags & handlers->handlers[i].mask) | |
922 | { | |
d4d24ba4 | 923 | if (!handlers->handlers[i].handler (opts, opts_set, decoded, |
a4d8c676 JM |
924 | lang_mask, kind, loc, |
925 | handlers, dc)) | |
5f20c657 | 926 | return false; |
5f20c657 JM |
927 | } |
928 | ||
929 | return true; | |
930 | } | |
931 | ||
481e1176 JM |
932 | /* Like handle_option, but OPT_INDEX, ARG and VALUE describe the |
933 | option instead of DECODED. This is used for callbacks when one | |
934 | option implies another instead of an option being decoded from the | |
935 | command line. */ | |
936 | ||
937 | bool | |
d4d24ba4 JM |
938 | handle_generated_option (struct gcc_options *opts, |
939 | struct gcc_options *opts_set, | |
940 | size_t opt_index, const char *arg, int value, | |
a4d8c676 | 941 | unsigned int lang_mask, int kind, location_t loc, |
1ebe4b4f JM |
942 | const struct cl_option_handlers *handlers, |
943 | diagnostic_context *dc) | |
481e1176 | 944 | { |
481e1176 JM |
945 | struct cl_decoded_option decoded; |
946 | ||
d9d16a19 | 947 | generate_option (opt_index, arg, value, lang_mask, &decoded); |
a4d8c676 JM |
948 | return handle_option (opts, opts_set, &decoded, lang_mask, kind, loc, |
949 | handlers, true, dc); | |
d9d16a19 JM |
950 | } |
951 | ||
952 | /* Fill in *DECODED with an option described by OPT_INDEX, ARG and | |
953 | VALUE for a front end using LANG_MASK. This is used when the | |
954 | compiler generates options internally. */ | |
955 | ||
956 | void | |
957 | generate_option (size_t opt_index, const char *arg, int value, | |
958 | unsigned int lang_mask, struct cl_decoded_option *decoded) | |
959 | { | |
960 | const struct cl_option *option = &cl_options[opt_index]; | |
961 | ||
962 | decoded->opt_index = opt_index; | |
2d2bd949 | 963 | decoded->warn_message = NULL; |
d9d16a19 | 964 | decoded->arg = arg; |
d9d16a19 JM |
965 | decoded->value = value; |
966 | decoded->errors = (option_ok_for_language (option, lang_mask) | |
967 | ? 0 | |
968 | : CL_ERR_WRONG_LANG); | |
481e1176 | 969 | |
5de8299c JM |
970 | generate_canonical_option (opt_index, arg, value, decoded); |
971 | switch (decoded->canonical_option_num_elements) | |
481e1176 | 972 | { |
5de8299c JM |
973 | case 1: |
974 | decoded->orig_option_with_args_text = decoded->canonical_option[0]; | |
975 | break; | |
976 | ||
977 | case 2: | |
978 | decoded->orig_option_with_args_text | |
dc357798 JJ |
979 | = opts_concat (decoded->canonical_option[0], " ", |
980 | decoded->canonical_option[1], NULL); | |
5de8299c JM |
981 | break; |
982 | ||
983 | default: | |
984 | gcc_unreachable (); | |
481e1176 | 985 | } |
d9d16a19 | 986 | } |
481e1176 | 987 | |
d9d16a19 JM |
988 | /* Fill in *DECODED with an option for input file FILE. */ |
989 | ||
990 | void | |
991 | generate_option_input_file (const char *file, | |
992 | struct cl_decoded_option *decoded) | |
993 | { | |
994 | decoded->opt_index = OPT_SPECIAL_input_file; | |
2d2bd949 | 995 | decoded->warn_message = NULL; |
d9d16a19 JM |
996 | decoded->arg = file; |
997 | decoded->orig_option_with_args_text = file; | |
998 | decoded->canonical_option_num_elements = 1; | |
999 | decoded->canonical_option[0] = file; | |
1000 | decoded->canonical_option[1] = NULL; | |
1001 | decoded->canonical_option[2] = NULL; | |
1002 | decoded->canonical_option[3] = NULL; | |
1003 | decoded->value = 1; | |
1004 | decoded->errors = 0; | |
481e1176 JM |
1005 | } |
1006 | ||
a4d8c676 JM |
1007 | /* Handle the switch DECODED (location LOC) for the language indicated |
1008 | by LANG_MASK, using the handlers in *HANDLERS and setting fields in | |
1009 | OPTS and OPTS_SET and using diagnostic context DC (if not NULL) for | |
1ebe4b4f | 1010 | diagnostic options. */ |
5f20c657 JM |
1011 | |
1012 | void | |
46625112 | 1013 | read_cmdline_option (struct gcc_options *opts, |
d4d24ba4 | 1014 | struct gcc_options *opts_set, |
46625112 | 1015 | struct cl_decoded_option *decoded, |
a4d8c676 | 1016 | location_t loc, |
5f20c657 | 1017 | unsigned int lang_mask, |
1ebe4b4f JM |
1018 | const struct cl_option_handlers *handlers, |
1019 | diagnostic_context *dc) | |
5f20c657 JM |
1020 | { |
1021 | const struct cl_option *option; | |
2d2bd949 JM |
1022 | const char *opt = decoded->orig_option_with_args_text; |
1023 | ||
1024 | if (decoded->warn_message) | |
a4d8c676 | 1025 | warning_at (loc, 0, decoded->warn_message, opt); |
5f20c657 JM |
1026 | |
1027 | if (decoded->opt_index == OPT_SPECIAL_unknown) | |
1028 | { | |
481e1176 | 1029 | if (handlers->unknown_option_callback (decoded)) |
a4d8c676 | 1030 | error_at (loc, "unrecognized command line option %qs", decoded->arg); |
5f20c657 JM |
1031 | return; |
1032 | } | |
1033 | ||
2d2bd949 JM |
1034 | if (decoded->opt_index == OPT_SPECIAL_ignore) |
1035 | return; | |
1036 | ||
5f20c657 | 1037 | option = &cl_options[decoded->opt_index]; |
5f20c657 JM |
1038 | |
1039 | if (decoded->errors & CL_ERR_DISABLED) | |
1040 | { | |
a4d8c676 JM |
1041 | error_at (loc, "command line option %qs" |
1042 | " is not supported by this configuration", opt); | |
5f20c657 JM |
1043 | return; |
1044 | } | |
1045 | ||
5f20c657 JM |
1046 | if (decoded->errors & CL_ERR_MISSING_ARG) |
1047 | { | |
1048 | if (option->missing_argument_error) | |
a4d8c676 | 1049 | error_at (loc, option->missing_argument_error, opt); |
5f20c657 | 1050 | else |
a4d8c676 | 1051 | error_at (loc, "missing argument to %qs", opt); |
5f20c657 JM |
1052 | return; |
1053 | } | |
1054 | ||
1055 | if (decoded->errors & CL_ERR_UINT_ARG) | |
1056 | { | |
a4d8c676 JM |
1057 | error_at (loc, "argument to %qs should be a non-negative integer", |
1058 | option->opt_text); | |
5f20c657 JM |
1059 | return; |
1060 | } | |
1061 | ||
e6d4b984 JM |
1062 | if (decoded->errors & CL_ERR_ENUM_ARG) |
1063 | { | |
1064 | const struct cl_enum *e = &cl_enums[option->var_enum]; | |
1065 | unsigned int i; | |
1066 | size_t len; | |
1067 | char *s, *p; | |
1068 | ||
1069 | if (e->unknown_error) | |
1070 | error_at (loc, e->unknown_error, decoded->arg); | |
1071 | else | |
1072 | error_at (loc, "unrecognized argument in option %qs", opt); | |
1073 | ||
1074 | len = 0; | |
1075 | for (i = 0; e->values[i].arg != NULL; i++) | |
1076 | len += strlen (e->values[i].arg) + 1; | |
1077 | ||
1078 | s = XALLOCAVEC (char, len); | |
1079 | p = s; | |
1080 | for (i = 0; e->values[i].arg != NULL; i++) | |
1081 | { | |
1082 | size_t arglen = strlen (e->values[i].arg); | |
1083 | memcpy (p, e->values[i].arg, arglen); | |
1084 | p[arglen] = ' '; | |
1085 | p += arglen + 1; | |
1086 | } | |
1087 | p[-1] = 0; | |
1088 | inform (loc, "valid arguments to %qs are: %s", option->opt_text, s); | |
1089 | return; | |
1090 | } | |
1091 | ||
4df47bca JM |
1092 | if (decoded->errors & CL_ERR_WRONG_LANG) |
1093 | { | |
1094 | handlers->wrong_lang_callback (decoded, lang_mask); | |
1095 | return; | |
1096 | } | |
1097 | ||
5f20c657 JM |
1098 | gcc_assert (!decoded->errors); |
1099 | ||
d4d24ba4 | 1100 | if (!handle_option (opts, opts_set, decoded, lang_mask, DK_UNSPECIFIED, |
a4d8c676 JM |
1101 | loc, handlers, false, dc)) |
1102 | error_at (loc, "unrecognized command line option %qs", opt); | |
5f20c657 JM |
1103 | } |
1104 | ||
d4d24ba4 | 1105 | /* Set any field in OPTS, and OPTS_SET if not NULL, for option |
a4d8c676 JM |
1106 | OPT_INDEX according to VALUE and ARG, diagnostic kind KIND, |
1107 | location LOC, using diagnostic context DC if not NULL for | |
1108 | diagnostic classification. */ | |
5f20c657 JM |
1109 | |
1110 | void | |
d4d24ba4 | 1111 | set_option (struct gcc_options *opts, struct gcc_options *opts_set, |
1ebe4b4f | 1112 | int opt_index, int value, const char *arg, int kind, |
a4d8c676 | 1113 | location_t loc, diagnostic_context *dc) |
5f20c657 JM |
1114 | { |
1115 | const struct cl_option *option = &cl_options[opt_index]; | |
46625112 | 1116 | void *flag_var = option_flag_var (opt_index, opts); |
d4d24ba4 | 1117 | void *set_flag_var = NULL; |
5f20c657 | 1118 | |
46625112 | 1119 | if (!flag_var) |
5f20c657 JM |
1120 | return; |
1121 | ||
3ba421e8 MLI |
1122 | if ((diagnostic_t) kind != DK_UNSPECIFIED && dc != NULL) |
1123 | diagnostic_classify_diagnostic (dc, opt_index, (diagnostic_t) kind, loc); | |
1124 | ||
d4d24ba4 JM |
1125 | if (opts_set != NULL) |
1126 | set_flag_var = option_flag_var (opt_index, opts_set); | |
1127 | ||
5f20c657 JM |
1128 | switch (option->var_type) |
1129 | { | |
1130 | case CLVC_BOOLEAN: | |
46625112 | 1131 | *(int *) flag_var = value; |
d4d24ba4 JM |
1132 | if (set_flag_var) |
1133 | *(int *) set_flag_var = 1; | |
5f20c657 JM |
1134 | break; |
1135 | ||
1136 | case CLVC_EQUAL: | |
99114bbf L |
1137 | if (option->cl_host_wide_int) |
1138 | *(HOST_WIDE_INT *) flag_var = (value | |
1139 | ? option->var_value | |
1140 | : !option->var_value); | |
1141 | else | |
1142 | *(int *) flag_var = (value | |
1143 | ? option->var_value | |
1144 | : !option->var_value); | |
d4d24ba4 JM |
1145 | if (set_flag_var) |
1146 | *(int *) set_flag_var = 1; | |
5f20c657 JM |
1147 | break; |
1148 | ||
1149 | case CLVC_BIT_CLEAR: | |
1150 | case CLVC_BIT_SET: | |
1151 | if ((value != 0) == (option->var_type == CLVC_BIT_SET)) | |
99114bbf L |
1152 | { |
1153 | if (option->cl_host_wide_int) | |
1154 | *(HOST_WIDE_INT *) flag_var |= option->var_value; | |
1155 | else | |
1156 | *(int *) flag_var |= option->var_value; | |
1157 | } | |
5f20c657 | 1158 | else |
99114bbf L |
1159 | { |
1160 | if (option->cl_host_wide_int) | |
1161 | *(HOST_WIDE_INT *) flag_var &= ~option->var_value; | |
1162 | else | |
1163 | *(int *) flag_var &= ~option->var_value; | |
1164 | } | |
d4d24ba4 | 1165 | if (set_flag_var) |
99114bbf L |
1166 | { |
1167 | if (option->cl_host_wide_int) | |
1168 | *(HOST_WIDE_INT *) set_flag_var |= option->var_value; | |
1169 | else | |
1170 | *(int *) set_flag_var |= option->var_value; | |
1171 | } | |
5f20c657 JM |
1172 | break; |
1173 | ||
1174 | case CLVC_STRING: | |
46625112 | 1175 | *(const char **) flag_var = arg; |
d4d24ba4 JM |
1176 | if (set_flag_var) |
1177 | *(const char **) set_flag_var = ""; | |
5f20c657 | 1178 | break; |
21bf1558 | 1179 | |
e6d4b984 JM |
1180 | case CLVC_ENUM: |
1181 | { | |
1182 | const struct cl_enum *e = &cl_enums[option->var_enum]; | |
1183 | ||
1184 | e->set (flag_var, value); | |
1185 | if (set_flag_var) | |
1186 | e->set (set_flag_var, 1); | |
1187 | } | |
1188 | break; | |
1189 | ||
21bf1558 JM |
1190 | case CLVC_DEFER: |
1191 | { | |
9771b263 DN |
1192 | vec<cl_deferred_option> *v |
1193 | = (vec<cl_deferred_option> *) *(void **) flag_var; | |
f32682ca | 1194 | cl_deferred_option p = {opt_index, arg, value}; |
9771b263 DN |
1195 | if (!v) |
1196 | v = XCNEW (vec<cl_deferred_option>); | |
1197 | v->safe_push (p); | |
1198 | *(void **) flag_var = v; | |
21bf1558 | 1199 | if (set_flag_var) |
9771b263 | 1200 | *(void **) set_flag_var = v; |
21bf1558 JM |
1201 | } |
1202 | break; | |
5f20c657 | 1203 | } |
5f20c657 | 1204 | } |
46625112 JM |
1205 | |
1206 | /* Return the address of the flag variable for option OPT_INDEX in | |
1207 | options structure OPTS, or NULL if there is no flag variable. */ | |
1208 | ||
1209 | void * | |
1210 | option_flag_var (int opt_index, struct gcc_options *opts) | |
1211 | { | |
1212 | const struct cl_option *option = &cl_options[opt_index]; | |
1213 | ||
1214 | if (option->flag_var_offset == (unsigned short) -1) | |
1215 | return NULL; | |
1216 | return (void *)(((char *) opts) + option->flag_var_offset); | |
1217 | } | |
c5fa0890 | 1218 | |
c98cd5bf JM |
1219 | /* Return 1 if option OPT_IDX is enabled in OPTS, 0 if it is disabled, |
1220 | or -1 if it isn't a simple on-off switch. */ | |
1221 | ||
1222 | int | |
1223 | option_enabled (int opt_idx, void *opts) | |
1224 | { | |
1225 | const struct cl_option *option = &(cl_options[opt_idx]); | |
1226 | struct gcc_options *optsg = (struct gcc_options *) opts; | |
1227 | void *flag_var = option_flag_var (opt_idx, optsg); | |
1228 | ||
1229 | if (flag_var) | |
1230 | switch (option->var_type) | |
1231 | { | |
1232 | case CLVC_BOOLEAN: | |
1233 | return *(int *) flag_var != 0; | |
1234 | ||
1235 | case CLVC_EQUAL: | |
99114bbf L |
1236 | if (option->cl_host_wide_int) |
1237 | return *(HOST_WIDE_INT *) flag_var == option->var_value; | |
1238 | else | |
1239 | return *(int *) flag_var == option->var_value; | |
c98cd5bf JM |
1240 | |
1241 | case CLVC_BIT_CLEAR: | |
99114bbf L |
1242 | if (option->cl_host_wide_int) |
1243 | return (*(HOST_WIDE_INT *) flag_var & option->var_value) == 0; | |
1244 | else | |
1245 | return (*(int *) flag_var & option->var_value) == 0; | |
c98cd5bf JM |
1246 | |
1247 | case CLVC_BIT_SET: | |
99114bbf L |
1248 | if (option->cl_host_wide_int) |
1249 | return (*(HOST_WIDE_INT *) flag_var & option->var_value) != 0; | |
1250 | else | |
1251 | return (*(int *) flag_var & option->var_value) != 0; | |
c98cd5bf JM |
1252 | |
1253 | case CLVC_STRING: | |
e6d4b984 | 1254 | case CLVC_ENUM: |
c98cd5bf JM |
1255 | case CLVC_DEFER: |
1256 | break; | |
1257 | } | |
1258 | return -1; | |
1259 | } | |
1260 | ||
1261 | /* Fill STATE with the current state of option OPTION in OPTS. Return | |
1262 | true if there is some state to store. */ | |
1263 | ||
1264 | bool | |
1265 | get_option_state (struct gcc_options *opts, int option, | |
1266 | struct cl_option_state *state) | |
1267 | { | |
1268 | void *flag_var = option_flag_var (option, opts); | |
1269 | ||
1270 | if (flag_var == 0) | |
1271 | return false; | |
1272 | ||
1273 | switch (cl_options[option].var_type) | |
1274 | { | |
1275 | case CLVC_BOOLEAN: | |
1276 | case CLVC_EQUAL: | |
1277 | state->data = flag_var; | |
99114bbf L |
1278 | state->size = (cl_options[option].cl_host_wide_int |
1279 | ? sizeof (HOST_WIDE_INT) | |
1280 | : sizeof (int)); | |
c98cd5bf JM |
1281 | break; |
1282 | ||
1283 | case CLVC_BIT_CLEAR: | |
1284 | case CLVC_BIT_SET: | |
1285 | state->ch = option_enabled (option, opts); | |
1286 | state->data = &state->ch; | |
1287 | state->size = 1; | |
1288 | break; | |
1289 | ||
1290 | case CLVC_STRING: | |
1291 | state->data = *(const char **) flag_var; | |
1292 | if (state->data == 0) | |
1293 | state->data = ""; | |
1294 | state->size = strlen ((const char *) state->data) + 1; | |
1295 | break; | |
1296 | ||
e6d4b984 JM |
1297 | case CLVC_ENUM: |
1298 | state->data = flag_var; | |
1299 | state->size = cl_enums[cl_options[option].var_enum].var_size; | |
1300 | break; | |
1301 | ||
c98cd5bf JM |
1302 | case CLVC_DEFER: |
1303 | return false; | |
1304 | } | |
1305 | return true; | |
1306 | } | |
1307 | ||
c5fa0890 JM |
1308 | /* Set a warning option OPT_INDEX (language mask LANG_MASK, option |
1309 | handlers HANDLERS) to have diagnostic kind KIND for option | |
1310 | structures OPTS and OPTS_SET and diagnostic context DC (possibly | |
1311 | NULL), at location LOC (UNKNOWN_LOCATION for -Werror=). If IMPLY, | |
1312 | the warning option in question is implied at this point. This is | |
1313 | used by -Werror= and #pragma GCC diagnostic. */ | |
1314 | ||
1315 | void | |
1316 | control_warning_option (unsigned int opt_index, int kind, bool imply, | |
1317 | location_t loc, unsigned int lang_mask, | |
1318 | const struct cl_option_handlers *handlers, | |
1319 | struct gcc_options *opts, | |
1320 | struct gcc_options *opts_set, | |
1321 | diagnostic_context *dc) | |
1322 | { | |
1323 | if (cl_options[opt_index].alias_target != N_OPTS) | |
1324 | opt_index = cl_options[opt_index].alias_target; | |
1325 | if (opt_index == OPT_SPECIAL_ignore) | |
1326 | return; | |
1327 | if (dc) | |
1328 | diagnostic_classify_diagnostic (dc, opt_index, (diagnostic_t) kind, loc); | |
1329 | if (imply) | |
1330 | { | |
1331 | /* -Werror=foo implies -Wfoo. */ | |
1332 | if (cl_options[opt_index].var_type == CLVC_BOOLEAN) | |
1333 | handle_generated_option (opts, opts_set, | |
1334 | opt_index, NULL, 1, lang_mask, | |
1335 | kind, loc, handlers, dc); | |
1336 | } | |
1337 | } |