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a187ac95 | 1 | /* Handle #pragma, system V.4 style. Supports #pragma weak and #pragma pack. |
cbe34bb5 | 2 | Copyright (C) 1992-2017 Free Software Foundation, Inc. |
a187ac95 | 3 | |
1322177d | 4 | This file is part of GCC. |
a187ac95 | 5 | |
1322177d LB |
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 |
1322177d | 9 | version. |
a187ac95 | 10 | |
1322177d LB |
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. | |
a187ac95 RS |
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/>. */ | |
a187ac95 | 19 | |
4b578ebf | 20 | #include "config.h" |
670ee920 | 21 | #include "system.h" |
4977bab6 | 22 | #include "coretypes.h" |
2adfab87 AM |
23 | #include "target.h" |
24 | #include "function.h" /* For cfun. */ | |
2adfab87 | 25 | #include "c-common.h" |
4d0cdd0c | 26 | #include "memmodel.h" |
2adfab87 | 27 | #include "tm_p.h" /* For REGISTER_TARGET_PRAGMAS. */ |
d8a2d370 | 28 | #include "stringpool.h" |
2adfab87 AM |
29 | #include "cgraph.h" |
30 | #include "diagnostic.h" | |
d8a2d370 DN |
31 | #include "attribs.h" |
32 | #include "varasm.h" | |
3d6f7931 | 33 | #include "c-pragma.h" |
79cf5994 | 34 | #include "opts.h" |
7ac8318c | 35 | #include "plugin.h" |
bc4071dd | 36 | |
b9b8dde3 DD |
37 | #define GCC_BAD(gmsgid) \ |
38 | do { warning (OPT_Wpragmas, gmsgid); return; } while (0) | |
4b794eaf | 39 | #define GCC_BAD2(gmsgid, arg) \ |
b9b8dde3 | 40 | do { warning (OPT_Wpragmas, gmsgid, arg); return; } while (0) |
0e5921e8 | 41 | |
a79683d5 | 42 | struct GTY(()) align_stack { |
c22cacf3 MS |
43 | int alignment; |
44 | tree id; | |
e2af664c | 45 | struct align_stack * prev; |
a79683d5 | 46 | }; |
e2af664c | 47 | |
e2500fed GK |
48 | static GTY(()) struct align_stack * alignment_stack; |
49 | ||
35b1a6fa | 50 | static void handle_pragma_pack (cpp_reader *); |
e2af664c | 51 | |
63eb1269 | 52 | /* If we have a "global" #pragma pack(<n>) in effect when the first |
c22cacf3 MS |
53 | #pragma pack(push,<n>) is encountered, this stores the value of |
54 | maximum_field_alignment in effect. When the final pop_alignment() | |
61e8b354 | 55 | happens, we restore the value to this, not to a value of 0 for |
ec5c56db | 56 | maximum_field_alignment. Value is in bits. */ |
ecb0eece | 57 | static int default_alignment; |
467cecf3 JB |
58 | #define SET_GLOBAL_ALIGNMENT(ALIGN) (maximum_field_alignment = *(alignment_stack == NULL \ |
59 | ? &default_alignment \ | |
60 | : &alignment_stack->alignment) = (ALIGN)) | |
61e8b354 | 61 | |
35b1a6fa AJ |
62 | static void push_alignment (int, tree); |
63 | static void pop_alignment (tree); | |
e2af664c NC |
64 | |
65 | /* Push an alignment value onto the stack. */ | |
0e5921e8 | 66 | static void |
35b1a6fa | 67 | push_alignment (int alignment, tree id) |
e2af664c | 68 | { |
766090c2 | 69 | align_stack * entry = ggc_alloc<align_stack> (); |
e2af664c | 70 | |
467cecf3 | 71 | entry->alignment = alignment; |
c22cacf3 MS |
72 | entry->id = id; |
73 | entry->prev = alignment_stack; | |
74 | ||
75 | /* The current value of maximum_field_alignment is not necessarily | |
76 | 0 since there may be a #pragma pack(<n>) in effect; remember it | |
467cecf3 JB |
77 | so that we can restore it after the final #pragma pop(). */ |
78 | if (alignment_stack == NULL) | |
79 | default_alignment = maximum_field_alignment; | |
c22cacf3 | 80 | |
467cecf3 | 81 | alignment_stack = entry; |
e2af664c | 82 | |
467cecf3 | 83 | maximum_field_alignment = alignment; |
e2af664c NC |
84 | } |
85 | ||
86 | /* Undo a push of an alignment onto the stack. */ | |
0e5921e8 | 87 | static void |
35b1a6fa | 88 | pop_alignment (tree id) |
e2af664c | 89 | { |
0f92adae | 90 | align_stack * entry; |
c22cacf3 | 91 | |
e2af664c | 92 | if (alignment_stack == NULL) |
3f75a254 | 93 | GCC_BAD ("#pragma pack (pop) encountered without matching #pragma pack (push)"); |
e2af664c | 94 | |
0f92adae JM |
95 | /* If we got an identifier, strip away everything above the target |
96 | entry so that the next step will restore the state just below it. */ | |
97 | if (id) | |
98 | { | |
99 | for (entry = alignment_stack; entry; entry = entry->prev) | |
100 | if (entry->id == id) | |
101 | { | |
0f92adae JM |
102 | alignment_stack = entry; |
103 | break; | |
104 | } | |
105 | if (entry == NULL) | |
b9b8dde3 | 106 | warning (OPT_Wpragmas, "\ |
88388a52 JM |
107 | #pragma pack(pop, %E) encountered without matching #pragma pack(push, %E)" |
108 | , id, id); | |
0f92adae JM |
109 | } |
110 | ||
467cecf3 | 111 | entry = alignment_stack->prev; |
e2af664c | 112 | |
467cecf3 | 113 | maximum_field_alignment = entry ? entry->alignment : default_alignment; |
e2af664c | 114 | |
467cecf3 | 115 | alignment_stack = entry; |
e2af664c | 116 | } |
a187ac95 | 117 | |
0e5921e8 ZW |
118 | /* #pragma pack () |
119 | #pragma pack (N) | |
c22cacf3 | 120 | |
467cecf3 | 121 | #pragma pack (push) |
0e5921e8 | 122 | #pragma pack (push, N) |
467cecf3 | 123 | #pragma pack (push, ID) |
0e5921e8 ZW |
124 | #pragma pack (push, ID, N) |
125 | #pragma pack (pop) | |
126 | #pragma pack (pop, ID) */ | |
127 | static void | |
e18476eb | 128 | handle_pragma_pack (cpp_reader * ARG_UNUSED (dummy)) |
0e5921e8 ZW |
129 | { |
130 | tree x, id = 0; | |
63eb1269 | 131 | int align = -1; |
0e5921e8 | 132 | enum cpp_ttype token; |
4337bc93 | 133 | enum { set, push, pop } action; |
0e5921e8 | 134 | |
75ce3d48 | 135 | if (pragma_lex (&x) != CPP_OPEN_PAREN) |
bda67431 | 136 | GCC_BAD ("missing %<(%> after %<#pragma pack%> - ignored"); |
0e5921e8 | 137 | |
75ce3d48 | 138 | token = pragma_lex (&x); |
0e5921e8 | 139 | if (token == CPP_CLOSE_PAREN) |
4337bc93 ZW |
140 | { |
141 | action = set; | |
467cecf3 | 142 | align = initial_max_fld_align; |
4337bc93 | 143 | } |
0e5921e8 ZW |
144 | else if (token == CPP_NUMBER) |
145 | { | |
12050e44 VR |
146 | if (TREE_CODE (x) != INTEGER_CST) |
147 | GCC_BAD ("invalid constant in %<#pragma pack%> - ignored"); | |
0e5921e8 ZW |
148 | align = TREE_INT_CST_LOW (x); |
149 | action = set; | |
75ce3d48 | 150 | if (pragma_lex (&x) != CPP_CLOSE_PAREN) |
bda67431 | 151 | GCC_BAD ("malformed %<#pragma pack%> - ignored"); |
0e5921e8 ZW |
152 | } |
153 | else if (token == CPP_NAME) | |
154 | { | |
467cecf3 | 155 | #define GCC_BAD_ACTION do { if (action != pop) \ |
bda67431 | 156 | GCC_BAD ("malformed %<#pragma pack(push[, id][, <n>])%> - ignored"); \ |
63eb1269 | 157 | else \ |
bda67431 | 158 | GCC_BAD ("malformed %<#pragma pack(pop[, id])%> - ignored"); \ |
63eb1269 MC |
159 | } while (0) |
160 | ||
4337bc93 ZW |
161 | const char *op = IDENTIFIER_POINTER (x); |
162 | if (!strcmp (op, "push")) | |
0e5921e8 | 163 | action = push; |
4337bc93 | 164 | else if (!strcmp (op, "pop")) |
0e5921e8 ZW |
165 | action = pop; |
166 | else | |
88388a52 | 167 | GCC_BAD2 ("unknown action %qE for %<#pragma pack%> - ignored", x); |
a187ac95 | 168 | |
75ce3d48 | 169 | while ((token = pragma_lex (&x)) == CPP_COMMA) |
e2af664c | 170 | { |
75ce3d48 | 171 | token = pragma_lex (&x); |
467cecf3 | 172 | if (token == CPP_NAME && id == 0) |
63eb1269 MC |
173 | { |
174 | id = x; | |
63eb1269 | 175 | } |
467cecf3 | 176 | else if (token == CPP_NUMBER && action == push && align == -1) |
63eb1269 | 177 | { |
12050e44 VR |
178 | if (TREE_CODE (x) != INTEGER_CST) |
179 | GCC_BAD ("invalid constant in %<#pragma pack%> - ignored"); | |
467cecf3 JB |
180 | align = TREE_INT_CST_LOW (x); |
181 | if (align == -1) | |
182 | action = set; | |
63eb1269 | 183 | } |
467cecf3 JB |
184 | else |
185 | GCC_BAD_ACTION; | |
e2af664c | 186 | } |
4337bc93 | 187 | |
63eb1269 | 188 | if (token != CPP_CLOSE_PAREN) |
da4083c7 CR |
189 | GCC_BAD_ACTION; |
190 | #undef GCC_BAD_ACTION | |
e2af664c | 191 | } |
4337bc93 | 192 | else |
bda67431 | 193 | GCC_BAD ("malformed %<#pragma pack%> - ignored"); |
4337bc93 | 194 | |
75ce3d48 | 195 | if (pragma_lex (&x) != CPP_EOF) |
b9b8dde3 | 196 | warning (OPT_Wpragmas, "junk at end of %<#pragma pack%>"); |
0e5921e8 | 197 | |
467cecf3 JB |
198 | if (flag_pack_struct) |
199 | GCC_BAD ("#pragma pack has no effect with -fpack-struct - ignored"); | |
200 | ||
63eb1269 MC |
201 | if (action != pop) |
202 | switch (align) | |
203 | { | |
204 | case 0: | |
205 | case 1: | |
206 | case 2: | |
207 | case 4: | |
208 | case 8: | |
209 | case 16: | |
210 | align *= BITS_PER_UNIT; | |
211 | break; | |
467cecf3 JB |
212 | case -1: |
213 | if (action == push) | |
214 | { | |
215 | align = maximum_field_alignment; | |
216 | break; | |
217 | } | |
191816a3 | 218 | /* FALLTHRU */ |
63eb1269 | 219 | default: |
da4083c7 | 220 | GCC_BAD2 ("alignment must be a small power of two, not %d", align); |
63eb1269 | 221 | } |
fc009f96 | 222 | |
0e5921e8 ZW |
223 | switch (action) |
224 | { | |
225 | case set: SET_GLOBAL_ALIGNMENT (align); break; | |
0e5921e8 | 226 | case push: push_alignment (align, id); break; |
c22cacf3 | 227 | case pop: pop_alignment (id); break; |
0e5921e8 ZW |
228 | } |
229 | } | |
a187ac95 | 230 | |
a79683d5 | 231 | struct GTY(()) pending_weak |
18bc5398 SB |
232 | { |
233 | tree name; | |
234 | tree value; | |
a79683d5 | 235 | }; |
18bc5398 | 236 | |
18bc5398 | 237 | |
9771b263 | 238 | static GTY(()) vec<pending_weak, va_gc> *pending_weaks; |
e2500fed | 239 | |
35b1a6fa AJ |
240 | static void apply_pragma_weak (tree, tree); |
241 | static void handle_pragma_weak (cpp_reader *); | |
a187ac95 | 242 | |
ecb0eece | 243 | static void |
35b1a6fa | 244 | apply_pragma_weak (tree decl, tree value) |
ecb0eece RH |
245 | { |
246 | if (value) | |
b53bb376 RH |
247 | { |
248 | value = build_string (IDENTIFIER_LENGTH (value), | |
249 | IDENTIFIER_POINTER (value)); | |
250 | decl_attributes (&decl, build_tree_list (get_identifier ("alias"), | |
251 | build_tree_list (NULL, value)), | |
252 | 0); | |
253 | } | |
254 | ||
45806a3f | 255 | if (SUPPORTS_WEAK && DECL_EXTERNAL (decl) && TREE_USED (decl) |
e0a21ab9 | 256 | && !DECL_WEAK (decl) /* Don't complain about a redundant #pragma. */ |
39a1ebb3 | 257 | && DECL_ASSEMBLER_NAME_SET_P (decl) |
45806a3f | 258 | && TREE_SYMBOL_REFERENCED (DECL_ASSEMBLER_NAME (decl))) |
b9b8dde3 | 259 | warning (OPT_Wpragmas, "applying #pragma weak %q+D after first use " |
c22cacf3 | 260 | "results in unspecified behavior", decl); |
45806a3f | 261 | |
ecb0eece RH |
262 | declare_weak (decl); |
263 | } | |
264 | ||
265 | void | |
35b1a6fa | 266 | maybe_apply_pragma_weak (tree decl) |
ecb0eece | 267 | { |
18bc5398 SB |
268 | tree id; |
269 | int i; | |
270 | pending_weak *pe; | |
ecb0eece | 271 | |
49a64b24 GK |
272 | /* Avoid asking for DECL_ASSEMBLER_NAME when it's not needed. */ |
273 | ||
274 | /* No weak symbols pending, take the short-cut. */ | |
39a1ebb3 | 275 | if (vec_safe_is_empty (pending_weaks)) |
49a64b24 GK |
276 | return; |
277 | /* If it's not visible outside this file, it doesn't matter whether | |
278 | it's weak. */ | |
279 | if (!DECL_EXTERNAL (decl) && !TREE_PUBLIC (decl)) | |
ecb0eece | 280 | return; |
49a64b24 GK |
281 | /* If it's not a function or a variable, it can't be weak. |
282 | FIXME: what kinds of things are visible outside this file but | |
366de0ce | 283 | aren't functions or variables? Should this be an assert instead? */ |
21b634ae | 284 | if (!VAR_OR_FUNCTION_DECL_P (decl)) |
49a64b24 GK |
285 | return; |
286 | ||
39a1ebb3 JJ |
287 | if (DECL_ASSEMBLER_NAME_SET_P (decl)) |
288 | id = DECL_ASSEMBLER_NAME (decl); | |
289 | else | |
290 | { | |
291 | id = DECL_ASSEMBLER_NAME (decl); | |
292 | SET_DECL_ASSEMBLER_NAME (decl, NULL_TREE); | |
293 | } | |
ecb0eece | 294 | |
9771b263 | 295 | FOR_EACH_VEC_ELT (*pending_weaks, i, pe) |
18bc5398 | 296 | if (id == pe->name) |
ecb0eece | 297 | { |
18bc5398 | 298 | apply_pragma_weak (decl, pe->value); |
9771b263 | 299 | pending_weaks->unordered_remove (i); |
ecb0eece RH |
300 | break; |
301 | } | |
302 | } | |
303 | ||
86f029aa JM |
304 | /* Process all "#pragma weak A = B" directives where we have not seen |
305 | a decl for A. */ | |
306 | void | |
307 | maybe_apply_pending_pragma_weaks (void) | |
308 | { | |
18bc5398 SB |
309 | tree alias_id, id, decl; |
310 | int i; | |
311 | pending_weak *pe; | |
5e20cdc9 | 312 | symtab_node *target; |
86f029aa | 313 | |
39a1ebb3 | 314 | if (vec_safe_is_empty (pending_weaks)) |
9771b263 DN |
315 | return; |
316 | ||
317 | FOR_EACH_VEC_ELT (*pending_weaks, i, pe) | |
86f029aa | 318 | { |
18bc5398 SB |
319 | alias_id = pe->name; |
320 | id = pe->value; | |
86f029aa | 321 | |
18bc5398 | 322 | if (id == NULL) |
86f029aa JM |
323 | continue; |
324 | ||
3dafb85c | 325 | target = symtab_node::get_for_asmname (id); |
c2255bc4 | 326 | decl = build_decl (UNKNOWN_LOCATION, |
67348ccc | 327 | target ? TREE_CODE (target->decl) : FUNCTION_DECL, |
65d630d4 | 328 | alias_id, default_function_type); |
86f029aa JM |
329 | |
330 | DECL_ARTIFICIAL (decl) = 1; | |
331 | TREE_PUBLIC (decl) = 1; | |
86f029aa | 332 | DECL_WEAK (decl) = 1; |
0ae9bd27 | 333 | if (VAR_P (decl)) |
65d630d4 JH |
334 | TREE_STATIC (decl) = 1; |
335 | if (!target) | |
336 | { | |
337 | error ("%q+D aliased to undefined symbol %qE", | |
338 | decl, id); | |
339 | continue; | |
340 | } | |
86f029aa JM |
341 | |
342 | assemble_alias (decl, id); | |
343 | } | |
344 | } | |
345 | ||
0e5921e8 ZW |
346 | /* #pragma weak name [= value] */ |
347 | static void | |
e18476eb | 348 | handle_pragma_weak (cpp_reader * ARG_UNUSED (dummy)) |
0e5921e8 | 349 | { |
ecb0eece | 350 | tree name, value, x, decl; |
0e5921e8 | 351 | enum cpp_ttype t; |
a187ac95 | 352 | |
0e5921e8 | 353 | value = 0; |
7169a029 | 354 | |
75ce3d48 | 355 | if (pragma_lex (&name) != CPP_NAME) |
da4083c7 | 356 | GCC_BAD ("malformed #pragma weak, ignored"); |
75ce3d48 | 357 | t = pragma_lex (&x); |
0e5921e8 ZW |
358 | if (t == CPP_EQ) |
359 | { | |
75ce3d48 | 360 | if (pragma_lex (&value) != CPP_NAME) |
da4083c7 | 361 | GCC_BAD ("malformed #pragma weak, ignored"); |
75ce3d48 | 362 | t = pragma_lex (&x); |
0e5921e8 ZW |
363 | } |
364 | if (t != CPP_EOF) | |
bc4071dd | 365 | warning (OPT_Wpragmas, "junk at end of %<#pragma weak%>"); |
0f92adae | 366 | |
ecb0eece | 367 | decl = identifier_global_value (name); |
6615c446 | 368 | if (decl && DECL_P (decl)) |
b53bb376 | 369 | { |
d1783ae5 KT |
370 | if (!VAR_OR_FUNCTION_DECL_P (decl)) |
371 | GCC_BAD2 ("%<#pragma weak%> declaration of %q+D not allowed," | |
372 | " ignored", decl); | |
b53bb376 RH |
373 | apply_pragma_weak (decl, value); |
374 | if (value) | |
08346abd JH |
375 | { |
376 | DECL_EXTERNAL (decl) = 0; | |
0ae9bd27 | 377 | if (VAR_P (decl)) |
08346abd JH |
378 | TREE_STATIC (decl) = 1; |
379 | assemble_alias (decl, value); | |
380 | } | |
b53bb376 | 381 | } |
ecb0eece | 382 | else |
18bc5398 | 383 | { |
f32682ca | 384 | pending_weak pe = {name, value}; |
9771b263 | 385 | vec_safe_push (pending_weaks, pe); |
18bc5398 | 386 | } |
0e5921e8 | 387 | } |
0f92adae | 388 | |
ee45a32d EB |
389 | static enum scalar_storage_order_kind global_sso; |
390 | ||
391 | void | |
392 | maybe_apply_pragma_scalar_storage_order (tree type) | |
393 | { | |
394 | if (global_sso == SSO_NATIVE) | |
395 | return; | |
396 | ||
397 | gcc_assert (RECORD_OR_UNION_TYPE_P (type)); | |
398 | ||
399 | if (lookup_attribute ("scalar_storage_order", TYPE_ATTRIBUTES (type))) | |
400 | return; | |
401 | ||
402 | if (global_sso == SSO_BIG_ENDIAN) | |
403 | TYPE_REVERSE_STORAGE_ORDER (type) = !BYTES_BIG_ENDIAN; | |
404 | else if (global_sso == SSO_LITTLE_ENDIAN) | |
405 | TYPE_REVERSE_STORAGE_ORDER (type) = BYTES_BIG_ENDIAN; | |
406 | else | |
407 | gcc_unreachable (); | |
408 | } | |
409 | ||
410 | static void | |
411 | handle_pragma_scalar_storage_order (cpp_reader *ARG_UNUSED(dummy)) | |
412 | { | |
413 | const char *kind_string; | |
414 | enum cpp_ttype token; | |
415 | tree x; | |
416 | ||
417 | if (BYTES_BIG_ENDIAN != WORDS_BIG_ENDIAN) | |
418 | error ("scalar_storage_order is not supported"); | |
419 | ||
420 | token = pragma_lex (&x); | |
421 | if (token != CPP_NAME) | |
422 | GCC_BAD ("missing [big-endian|little-endian|default] after %<#pragma scalar_storage_order%>"); | |
423 | kind_string = IDENTIFIER_POINTER (x); | |
424 | if (strcmp (kind_string, "default") == 0) | |
425 | global_sso = default_sso; | |
426 | else if (strcmp (kind_string, "big") == 0) | |
427 | global_sso = SSO_BIG_ENDIAN; | |
428 | else if (strcmp (kind_string, "little") == 0) | |
429 | global_sso = SSO_LITTLE_ENDIAN; | |
430 | else | |
431 | GCC_BAD ("expected [big-endian|little-endian|default] after %<#pragma scalar_storage_order%>"); | |
432 | } | |
433 | ||
84b8b0e0 ZW |
434 | /* GCC supports two #pragma directives for renaming the external |
435 | symbol associated with a declaration (DECL_ASSEMBLER_NAME), for | |
5c30094f | 436 | compatibility with the Solaris and VMS system headers. GCC also |
84b8b0e0 ZW |
437 | has its own notation for this, __asm__("name") annotations. |
438 | ||
439 | Corner cases of these features and their interaction: | |
440 | ||
441 | 1) Both pragmas silently apply only to declarations with external | |
442 | linkage (that is, TREE_PUBLIC || DECL_EXTERNAL). Asm labels | |
443 | do not have this restriction. | |
444 | ||
445 | 2) In C++, both #pragmas silently apply only to extern "C" declarations. | |
446 | Asm labels do not have this restriction. | |
447 | ||
448 | 3) If any of the three ways of changing DECL_ASSEMBLER_NAME is | |
449 | applied to a decl whose DECL_ASSEMBLER_NAME is already set, and the | |
450 | new name is different, a warning issues and the name does not change. | |
451 | ||
452 | 4) The "source name" for #pragma redefine_extname is the DECL_NAME, | |
453 | *not* the DECL_ASSEMBLER_NAME. | |
454 | ||
455 | 5) If #pragma extern_prefix is in effect and a declaration occurs | |
456 | with an __asm__ name, the #pragma extern_prefix is silently | |
457 | ignored for that declaration. | |
458 | ||
459 | 6) If #pragma extern_prefix and #pragma redefine_extname apply to | |
460 | the same declaration, whichever triggered first wins, and a warning | |
461 | is issued. (We would like to have #pragma redefine_extname always | |
462 | win, but it can appear either before or after the declaration, and | |
463 | if it appears afterward, we have no way of knowing whether a modified | |
464 | DECL_ASSEMBLER_NAME is due to #pragma extern_prefix.) */ | |
465 | ||
a79683d5 | 466 | struct GTY(()) pending_redefinition { |
4f8c876d NF |
467 | tree oldname; |
468 | tree newname; | |
a79683d5 | 469 | }; |
4f8c876d | 470 | |
4f8c876d | 471 | |
9771b263 | 472 | static GTY(()) vec<pending_redefinition, va_gc> *pending_redefine_extname; |
e2500fed | 473 | |
35b1a6fa | 474 | static void handle_pragma_redefine_extname (cpp_reader *); |
41c64394 | 475 | |
84b8b0e0 | 476 | /* #pragma redefine_extname oldname newname */ |
41c64394 | 477 | static void |
e18476eb | 478 | handle_pragma_redefine_extname (cpp_reader * ARG_UNUSED (dummy)) |
41c64394 | 479 | { |
3a636414 | 480 | tree oldname, newname, decls, x; |
41c64394 | 481 | enum cpp_ttype t; |
3a636414 | 482 | bool found; |
41c64394 | 483 | |
75ce3d48 | 484 | if (pragma_lex (&oldname) != CPP_NAME) |
84b8b0e0 | 485 | GCC_BAD ("malformed #pragma redefine_extname, ignored"); |
75ce3d48 | 486 | if (pragma_lex (&newname) != CPP_NAME) |
84b8b0e0 | 487 | GCC_BAD ("malformed #pragma redefine_extname, ignored"); |
75ce3d48 | 488 | t = pragma_lex (&x); |
41c64394 | 489 | if (t != CPP_EOF) |
bc4071dd | 490 | warning (OPT_Wpragmas, "junk at end of %<#pragma redefine_extname%>"); |
41c64394 | 491 | |
3a636414 JM |
492 | found = false; |
493 | for (decls = c_linkage_bindings (oldname); | |
494 | decls; ) | |
41c64394 | 495 | { |
3a636414 JM |
496 | tree decl; |
497 | if (TREE_CODE (decls) == TREE_LIST) | |
84b8b0e0 | 498 | { |
3a636414 JM |
499 | decl = TREE_VALUE (decls); |
500 | decls = TREE_CHAIN (decls); | |
84b8b0e0 ZW |
501 | } |
502 | else | |
3a636414 JM |
503 | { |
504 | decl = decls; | |
505 | decls = NULL_TREE; | |
506 | } | |
507 | ||
508 | if ((TREE_PUBLIC (decl) || DECL_EXTERNAL (decl)) | |
21b634ae | 509 | && VAR_OR_FUNCTION_DECL_P (decl)) |
3a636414 JM |
510 | { |
511 | found = true; | |
512 | if (DECL_ASSEMBLER_NAME_SET_P (decl)) | |
513 | { | |
514 | const char *name = IDENTIFIER_POINTER (DECL_ASSEMBLER_NAME (decl)); | |
515 | name = targetm.strip_name_encoding (name); | |
516 | ||
a01f151f | 517 | if (!id_equal (newname, name)) |
3a636414 JM |
518 | warning (OPT_Wpragmas, "#pragma redefine_extname ignored due to " |
519 | "conflict with previous rename"); | |
520 | } | |
521 | else | |
3dafb85c | 522 | symtab->change_decl_assembler_name (decl, newname); |
3a636414 | 523 | } |
41c64394 | 524 | } |
3a636414 JM |
525 | |
526 | if (!found) | |
84b8b0e0 ZW |
527 | /* We have to add this to the rename list even if there's already |
528 | a global value that doesn't meet the above criteria, because in | |
529 | C++ "struct foo {...};" puts "foo" in the current namespace but | |
530 | does *not* conflict with a subsequent declaration of a function | |
531 | or variable foo. See g++.dg/other/pragma-re-2.C. */ | |
532 | add_to_renaming_pragma_list (oldname, newname); | |
41c64394 | 533 | } |
41c64394 | 534 | |
fb037b5d | 535 | /* This is called from here and from ia64-c.c. */ |
0c3a2ea0 | 536 | void |
35b1a6fa | 537 | add_to_renaming_pragma_list (tree oldname, tree newname) |
0c3a2ea0 | 538 | { |
4f8c876d NF |
539 | unsigned ix; |
540 | pending_redefinition *p; | |
541 | ||
9771b263 | 542 | FOR_EACH_VEC_SAFE_ELT (pending_redefine_extname, ix, p) |
4f8c876d NF |
543 | if (oldname == p->oldname) |
544 | { | |
545 | if (p->newname != newname) | |
546 | warning (OPT_Wpragmas, "#pragma redefine_extname ignored due to " | |
547 | "conflict with previous #pragma redefine_extname"); | |
548 | return; | |
549 | } | |
c22cacf3 | 550 | |
f32682ca | 551 | pending_redefinition e = {oldname, newname}; |
9771b263 | 552 | vec_safe_push (pending_redefine_extname, e); |
0c3a2ea0 SE |
553 | } |
554 | ||
e50e723e TG |
555 | /* The current prefix set by #pragma extern_prefix. */ |
556 | GTY(()) tree pragma_extern_prefix; | |
e2500fed | 557 | |
95bd1dd7 | 558 | /* Hook from the front ends to apply the results of one of the preceding |
41c64394 RH |
559 | pragmas that rename variables. */ |
560 | ||
561 | tree | |
35b1a6fa | 562 | maybe_apply_renaming_pragma (tree decl, tree asmname) |
41c64394 | 563 | { |
4f8c876d NF |
564 | unsigned ix; |
565 | pending_redefinition *p; | |
84b8b0e0 ZW |
566 | |
567 | /* The renaming pragmas are only applied to declarations with | |
568 | external linkage. */ | |
21b634ae | 569 | if (!VAR_OR_FUNCTION_DECL_P (decl) |
84b8b0e0 ZW |
570 | || (!TREE_PUBLIC (decl) && !DECL_EXTERNAL (decl)) |
571 | || !has_c_linkage (decl)) | |
41c64394 RH |
572 | return asmname; |
573 | ||
84b8b0e0 ZW |
574 | /* If the DECL_ASSEMBLER_NAME is already set, it does not change, |
575 | but we may warn about a rename that conflicts. */ | |
576 | if (DECL_ASSEMBLER_NAME_SET_P (decl)) | |
41c64394 | 577 | { |
84b8b0e0 ZW |
578 | const char *oldname = IDENTIFIER_POINTER (DECL_ASSEMBLER_NAME (decl)); |
579 | oldname = targetm.strip_name_encoding (oldname); | |
580 | ||
581 | if (asmname && strcmp (TREE_STRING_POINTER (asmname), oldname)) | |
b9b8dde3 | 582 | warning (OPT_Wpragmas, "asm declaration ignored due to " |
84b8b0e0 ZW |
583 | "conflict with previous rename"); |
584 | ||
585 | /* Take any pending redefine_extname off the list. */ | |
9771b263 | 586 | FOR_EACH_VEC_SAFE_ELT (pending_redefine_extname, ix, p) |
4f8c876d | 587 | if (DECL_NAME (decl) == p->oldname) |
84b8b0e0 ZW |
588 | { |
589 | /* Only warn if there is a conflict. */ | |
a01f151f | 590 | if (!id_equal (p->newname, oldname)) |
b9b8dde3 | 591 | warning (OPT_Wpragmas, "#pragma redefine_extname ignored due to " |
84b8b0e0 ZW |
592 | "conflict with previous rename"); |
593 | ||
9771b263 | 594 | pending_redefine_extname->unordered_remove (ix); |
84b8b0e0 ZW |
595 | break; |
596 | } | |
6574d78e | 597 | return NULL_TREE; |
41c64394 RH |
598 | } |
599 | ||
84b8b0e0 | 600 | /* Find out if we have a pending #pragma redefine_extname. */ |
9771b263 | 601 | FOR_EACH_VEC_SAFE_ELT (pending_redefine_extname, ix, p) |
4f8c876d | 602 | if (DECL_NAME (decl) == p->oldname) |
84b8b0e0 | 603 | { |
4f8c876d | 604 | tree newname = p->newname; |
9771b263 | 605 | pending_redefine_extname->unordered_remove (ix); |
41c64394 | 606 | |
84b8b0e0 | 607 | /* If we already have an asmname, #pragma redefine_extname is |
c22cacf3 | 608 | ignored (with a warning if it conflicts). */ |
84b8b0e0 ZW |
609 | if (asmname) |
610 | { | |
611 | if (strcmp (TREE_STRING_POINTER (asmname), | |
612 | IDENTIFIER_POINTER (newname)) != 0) | |
b9b8dde3 | 613 | warning (OPT_Wpragmas, "#pragma redefine_extname ignored due to " |
84b8b0e0 ZW |
614 | "conflict with __asm__ declaration"); |
615 | return asmname; | |
616 | } | |
41c64394 | 617 | |
84b8b0e0 ZW |
618 | /* Otherwise we use what we've got; #pragma extern_prefix is |
619 | silently ignored. */ | |
620 | return build_string (IDENTIFIER_LENGTH (newname), | |
621 | IDENTIFIER_POINTER (newname)); | |
622 | } | |
41c64394 | 623 | |
84b8b0e0 ZW |
624 | /* If we've got an asmname, #pragma extern_prefix is silently ignored. */ |
625 | if (asmname) | |
626 | return asmname; | |
41c64394 | 627 | |
84b8b0e0 ZW |
628 | /* If #pragma extern_prefix is in effect, apply it. */ |
629 | if (pragma_extern_prefix) | |
41c64394 | 630 | { |
84b8b0e0 ZW |
631 | const char *prefix = TREE_STRING_POINTER (pragma_extern_prefix); |
632 | size_t plen = TREE_STRING_LENGTH (pragma_extern_prefix) - 1; | |
633 | ||
634 | const char *id = IDENTIFIER_POINTER (DECL_NAME (decl)); | |
635 | size_t ilen = IDENTIFIER_LENGTH (DECL_NAME (decl)); | |
c22cacf3 | 636 | |
28dab132 | 637 | char *newname = (char *) alloca (plen + ilen + 1); |
84b8b0e0 ZW |
638 | |
639 | memcpy (newname, prefix, plen); | |
640 | memcpy (newname + plen, id, ilen + 1); | |
641 | ||
642 | return build_string (plen + ilen, newname); | |
41c64394 | 643 | } |
41c64394 | 644 | |
84b8b0e0 | 645 | /* Nada. */ |
6574d78e | 646 | return NULL_TREE; |
41c64394 RH |
647 | } |
648 | ||
d7afec4b | 649 | |
d7afec4b ND |
650 | static void handle_pragma_visibility (cpp_reader *); |
651 | ||
9771b263 | 652 | static vec<int> visstack; |
0ed5edac JM |
653 | |
654 | /* Push the visibility indicated by STR onto the top of the #pragma | |
9789ba46 JJ |
655 | visibility stack. KIND is 0 for #pragma GCC visibility, 1 for |
656 | C++ namespace with visibility attribute and 2 for C++ builtin | |
657 | ABI namespace. push_visibility/pop_visibility calls must have | |
658 | matching KIND, it is not allowed to push visibility using one | |
659 | KIND and pop using a different one. */ | |
0ed5edac JM |
660 | |
661 | void | |
9789ba46 | 662 | push_visibility (const char *str, int kind) |
0ed5edac | 663 | { |
9771b263 | 664 | visstack.safe_push (((int) default_visibility) | (kind << 8)); |
0ed5edac JM |
665 | if (!strcmp (str, "default")) |
666 | default_visibility = VISIBILITY_DEFAULT; | |
667 | else if (!strcmp (str, "internal")) | |
668 | default_visibility = VISIBILITY_INTERNAL; | |
669 | else if (!strcmp (str, "hidden")) | |
c22cacf3 | 670 | default_visibility = VISIBILITY_HIDDEN; |
0ed5edac JM |
671 | else if (!strcmp (str, "protected")) |
672 | default_visibility = VISIBILITY_PROTECTED; | |
673 | else | |
674 | GCC_BAD ("#pragma GCC visibility push() must specify default, internal, hidden or protected"); | |
675 | visibility_options.inpragma = 1; | |
676 | } | |
677 | ||
9789ba46 JJ |
678 | /* Pop a level of the #pragma visibility stack. Return true if |
679 | successful. */ | |
0ed5edac | 680 | |
9789ba46 JJ |
681 | bool |
682 | pop_visibility (int kind) | |
0ed5edac | 683 | { |
9771b263 | 684 | if (!visstack.length ()) |
9789ba46 | 685 | return false; |
9771b263 | 686 | if ((visstack.last () >> 8) != kind) |
9789ba46 JJ |
687 | return false; |
688 | default_visibility | |
9771b263 | 689 | = (enum symbol_visibility) (visstack.pop () & 0xff); |
0ed5edac | 690 | visibility_options.inpragma |
9771b263 | 691 | = visstack.length () != 0; |
9789ba46 | 692 | return true; |
c22cacf3 | 693 | } |
be1b1c9b | 694 | |
d7afec4b ND |
695 | /* Sets the default visibility for symbols to something other than that |
696 | specified on the command line. */ | |
0ed5edac | 697 | |
d7afec4b ND |
698 | static void |
699 | handle_pragma_visibility (cpp_reader *dummy ATTRIBUTE_UNUSED) | |
be1b1c9b L |
700 | { |
701 | /* Form is #pragma GCC visibility push(hidden)|pop */ | |
d7afec4b ND |
702 | tree x; |
703 | enum cpp_ttype token; | |
704 | enum { bad, push, pop } action = bad; | |
c22cacf3 | 705 | |
75ce3d48 | 706 | token = pragma_lex (&x); |
d7afec4b ND |
707 | if (token == CPP_NAME) |
708 | { | |
709 | const char *op = IDENTIFIER_POINTER (x); | |
710 | if (!strcmp (op, "push")) | |
c22cacf3 | 711 | action = push; |
d7afec4b | 712 | else if (!strcmp (op, "pop")) |
c22cacf3 | 713 | action = pop; |
d7afec4b ND |
714 | } |
715 | if (bad == action) | |
716 | GCC_BAD ("#pragma GCC visibility must be followed by push or pop"); | |
717 | else | |
718 | { | |
719 | if (pop == action) | |
c22cacf3 | 720 | { |
9789ba46 | 721 | if (! pop_visibility (0)) |
0ed5edac | 722 | GCC_BAD ("no matching push for %<#pragma GCC visibility pop%>"); |
c22cacf3 | 723 | } |
d7afec4b | 724 | else |
c22cacf3 MS |
725 | { |
726 | if (pragma_lex (&x) != CPP_OPEN_PAREN) | |
727 | GCC_BAD ("missing %<(%> after %<#pragma GCC visibility push%> - ignored"); | |
728 | token = pragma_lex (&x); | |
729 | if (token != CPP_NAME) | |
0ed5edac | 730 | GCC_BAD ("malformed #pragma GCC visibility push"); |
c22cacf3 | 731 | else |
9789ba46 | 732 | push_visibility (IDENTIFIER_POINTER (x), 0); |
c22cacf3 MS |
733 | if (pragma_lex (&x) != CPP_CLOSE_PAREN) |
734 | GCC_BAD ("missing %<(%> after %<#pragma GCC visibility push%> - ignored"); | |
735 | } | |
d7afec4b | 736 | } |
75ce3d48 | 737 | if (pragma_lex (&x) != CPP_EOF) |
b9b8dde3 | 738 | warning (OPT_Wpragmas, "junk at end of %<#pragma GCC visibility%>"); |
d7afec4b ND |
739 | } |
740 | ||
79cf5994 DD |
741 | static void |
742 | handle_pragma_diagnostic(cpp_reader *ARG_UNUSED(dummy)) | |
743 | { | |
79cf5994 | 744 | tree x; |
c4914de6 MLI |
745 | location_t loc; |
746 | enum cpp_ttype token = pragma_lex (&x, &loc); | |
79cf5994 | 747 | if (token != CPP_NAME) |
c4914de6 MLI |
748 | { |
749 | warning_at (loc, OPT_Wpragmas, | |
750 | "missing [error|warning|ignored|push|pop]" | |
751 | " after %<#pragma GCC diagnostic%>"); | |
eaa797e8 | 752 | return; |
c4914de6 | 753 | } |
c4914de6 MLI |
754 | |
755 | diagnostic_t kind; | |
756 | const char *kind_string = IDENTIFIER_POINTER (x); | |
79cf5994 DD |
757 | if (strcmp (kind_string, "error") == 0) |
758 | kind = DK_ERROR; | |
759 | else if (strcmp (kind_string, "warning") == 0) | |
760 | kind = DK_WARNING; | |
761 | else if (strcmp (kind_string, "ignored") == 0) | |
762 | kind = DK_IGNORED; | |
cd7fe53b DD |
763 | else if (strcmp (kind_string, "push") == 0) |
764 | { | |
765 | diagnostic_push_diagnostics (global_dc, input_location); | |
766 | return; | |
767 | } | |
768 | else if (strcmp (kind_string, "pop") == 0) | |
769 | { | |
770 | diagnostic_pop_diagnostics (global_dc, input_location); | |
771 | return; | |
772 | } | |
79cf5994 | 773 | else |
c4914de6 MLI |
774 | { |
775 | warning_at (loc, OPT_Wpragmas, | |
776 | "expected [error|warning|ignored|push|pop]" | |
777 | " after %<#pragma GCC diagnostic%>"); | |
778 | return; | |
779 | } | |
79cf5994 | 780 | |
c4914de6 | 781 | token = pragma_lex (&x, &loc); |
79cf5994 | 782 | if (token != CPP_STRING) |
c4914de6 MLI |
783 | { |
784 | warning_at (loc, OPT_Wpragmas, | |
785 | "missing option after %<#pragma GCC diagnostic%> kind"); | |
786 | return; | |
787 | } | |
788 | ||
c1822f9c MLI |
789 | const char *option_string = TREE_STRING_POINTER (x); |
790 | unsigned int lang_mask = c_common_option_lang_mask () | CL_COMMON; | |
791 | /* option_string + 1 to skip the initial '-' */ | |
792 | unsigned int option_index = find_opt (option_string + 1, lang_mask); | |
793 | if (option_index == OPT_SPECIAL_unknown) | |
794 | { | |
795 | warning_at (loc, OPT_Wpragmas, | |
796 | "unknown option after %<#pragma GCC diagnostic%> kind"); | |
797 | return; | |
798 | } | |
799 | else if (!(cl_options[option_index].flags & CL_WARNING)) | |
800 | { | |
801 | warning_at (loc, OPT_Wpragmas, | |
802 | "%qs is not an option that controls warnings", option_string); | |
803 | return; | |
804 | } | |
805 | else if (!(cl_options[option_index].flags & lang_mask)) | |
806 | { | |
807 | char *ok_langs = write_langs (cl_options[option_index].flags); | |
808 | char *bad_lang = write_langs (c_common_option_lang_mask ()); | |
809 | warning_at (loc, OPT_Wpragmas, | |
810 | "option %qs is valid for %s but not for %s", | |
811 | option_string, ok_langs, bad_lang); | |
812 | free (ok_langs); | |
813 | free (bad_lang); | |
814 | return; | |
815 | } | |
816 | ||
c4914de6 | 817 | struct cl_option_handlers handlers; |
c5fa0890 | 818 | set_default_handlers (&handlers); |
63bbf46d JJ |
819 | const char *arg = NULL; |
820 | if (cl_options[option_index].flags & CL_JOINED) | |
821 | arg = option_string + 1 + cl_options[option_index].opt_len; | |
e1b81f2b JJ |
822 | /* FIXME: input_location isn't the best location here, but it is |
823 | what we used to do here before and changing it breaks e.g. | |
824 | PR69543 and PR69558. */ | |
63bbf46d JJ |
825 | control_warning_option (option_index, (int) kind, |
826 | arg, kind != DK_IGNORED, | |
e1b81f2b | 827 | input_location, lang_mask, &handlers, |
c1822f9c MLI |
828 | &global_options, &global_options_set, |
829 | global_dc); | |
79cf5994 DD |
830 | } |
831 | ||
5779e713 | 832 | /* Parse #pragma GCC target (xxx) to set target specific options. */ |
ab442df7 | 833 | static void |
5779e713 | 834 | handle_pragma_target(cpp_reader *ARG_UNUSED(dummy)) |
ab442df7 MM |
835 | { |
836 | enum cpp_ttype token; | |
ab442df7 MM |
837 | tree x; |
838 | bool close_paren_needed_p = false; | |
839 | ||
840 | if (cfun) | |
841 | { | |
842 | error ("#pragma GCC option is not allowed inside functions"); | |
843 | return; | |
844 | } | |
845 | ||
ab442df7 MM |
846 | token = pragma_lex (&x); |
847 | if (token == CPP_OPEN_PAREN) | |
848 | { | |
849 | close_paren_needed_p = true; | |
850 | token = pragma_lex (&x); | |
851 | } | |
852 | ||
5779e713 | 853 | if (token != CPP_STRING) |
ab442df7 | 854 | { |
5779e713 | 855 | GCC_BAD ("%<#pragma GCC option%> is not a string"); |
ab442df7 MM |
856 | return; |
857 | } | |
858 | ||
859 | /* Strings are user options. */ | |
860 | else | |
861 | { | |
862 | tree args = NULL_TREE; | |
863 | ||
864 | do | |
865 | { | |
866 | /* Build up the strings now as a tree linked list. Skip empty | |
867 | strings. */ | |
868 | if (TREE_STRING_LENGTH (x) > 0) | |
869 | args = tree_cons (NULL_TREE, x, args); | |
870 | ||
871 | token = pragma_lex (&x); | |
872 | while (token == CPP_COMMA) | |
873 | token = pragma_lex (&x); | |
874 | } | |
875 | while (token == CPP_STRING); | |
876 | ||
877 | if (close_paren_needed_p) | |
878 | { | |
879 | if (token == CPP_CLOSE_PAREN) | |
880 | token = pragma_lex (&x); | |
881 | else | |
5779e713 | 882 | GCC_BAD ("%<#pragma GCC target (string [,string]...)%> does " |
d8a07487 | 883 | "not have a final %<)%>"); |
ab442df7 MM |
884 | } |
885 | ||
886 | if (token != CPP_EOF) | |
887 | { | |
5779e713 | 888 | error ("#pragma GCC target string... is badly formed"); |
ab442df7 MM |
889 | return; |
890 | } | |
891 | ||
892 | /* put arguments in the order the user typed them. */ | |
893 | args = nreverse (args); | |
894 | ||
5779e713 | 895 | if (targetm.target_option.pragma_parse (args, NULL_TREE)) |
ec1c5694 | 896 | current_target_pragma = chainon (current_target_pragma, args); |
ab442df7 MM |
897 | } |
898 | } | |
899 | ||
ab442df7 MM |
900 | /* Handle #pragma GCC optimize to set optimization options. */ |
901 | static void | |
5779e713 | 902 | handle_pragma_optimize (cpp_reader *ARG_UNUSED(dummy)) |
ab442df7 MM |
903 | { |
904 | enum cpp_ttype token; | |
ab442df7 MM |
905 | tree x; |
906 | bool close_paren_needed_p = false; | |
907 | tree optimization_previous_node = optimization_current_node; | |
908 | ||
909 | if (cfun) | |
910 | { | |
911 | error ("#pragma GCC optimize is not allowed inside functions"); | |
912 | return; | |
913 | } | |
914 | ||
915 | token = pragma_lex (&x); | |
916 | if (token == CPP_OPEN_PAREN) | |
917 | { | |
918 | close_paren_needed_p = true; | |
919 | token = pragma_lex (&x); | |
920 | } | |
921 | ||
5779e713 | 922 | if (token != CPP_STRING && token != CPP_NUMBER) |
ab442df7 | 923 | { |
5779e713 | 924 | GCC_BAD ("%<#pragma GCC optimize%> is not a string or number"); |
ab442df7 MM |
925 | return; |
926 | } | |
927 | ||
928 | /* Strings/numbers are user options. */ | |
929 | else | |
930 | { | |
931 | tree args = NULL_TREE; | |
932 | ||
933 | do | |
934 | { | |
935 | /* Build up the numbers/strings now as a list. */ | |
936 | if (token != CPP_STRING || TREE_STRING_LENGTH (x) > 0) | |
937 | args = tree_cons (NULL_TREE, x, args); | |
938 | ||
939 | token = pragma_lex (&x); | |
940 | while (token == CPP_COMMA) | |
941 | token = pragma_lex (&x); | |
942 | } | |
943 | while (token == CPP_STRING || token == CPP_NUMBER); | |
944 | ||
945 | if (close_paren_needed_p) | |
946 | { | |
947 | if (token == CPP_CLOSE_PAREN) | |
948 | token = pragma_lex (&x); | |
949 | else | |
950 | GCC_BAD ("%<#pragma GCC optimize (string [,string]...)%> does " | |
d8a07487 | 951 | "not have a final %<)%>"); |
ab442df7 MM |
952 | } |
953 | ||
954 | if (token != CPP_EOF) | |
955 | { | |
956 | error ("#pragma GCC optimize string... is badly formed"); | |
957 | return; | |
958 | } | |
959 | ||
960 | /* put arguments in the order the user typed them. */ | |
961 | args = nreverse (args); | |
962 | ||
963 | parse_optimize_options (args, false); | |
5779e713 | 964 | current_optimize_pragma = chainon (current_optimize_pragma, args); |
bf7b5747 | 965 | optimization_current_node = build_optimization_node (&global_options); |
ab442df7 MM |
966 | c_cpp_builtins_optimize_pragma (parse_in, |
967 | optimization_previous_node, | |
968 | optimization_current_node); | |
969 | } | |
970 | } | |
971 | ||
5779e713 MM |
972 | /* Stack of the #pragma GCC options created with #pragma GCC push_option. Save |
973 | both the binary representation of the options and the TREE_LIST of | |
974 | strings that will be added to the function's attribute list. */ | |
a79683d5 | 975 | struct GTY(()) opt_stack { |
5779e713 MM |
976 | struct opt_stack *prev; |
977 | tree target_binary; | |
978 | tree target_strings; | |
979 | tree optimize_binary; | |
980 | tree optimize_strings; | |
a79683d5 | 981 | }; |
5779e713 MM |
982 | |
983 | static GTY(()) struct opt_stack * options_stack; | |
984 | ||
985 | /* Handle #pragma GCC push_options to save the current target and optimization | |
986 | options. */ | |
987 | ||
988 | static void | |
989 | handle_pragma_push_options (cpp_reader *ARG_UNUSED(dummy)) | |
990 | { | |
991 | enum cpp_ttype token; | |
992 | tree x = 0; | |
5779e713 MM |
993 | |
994 | token = pragma_lex (&x); | |
995 | if (token != CPP_EOF) | |
996 | { | |
997 | warning (OPT_Wpragmas, "junk at end of %<#pragma push_options%>"); | |
998 | return; | |
999 | } | |
1000 | ||
766090c2 | 1001 | opt_stack *p = ggc_alloc<opt_stack> (); |
5779e713 MM |
1002 | p->prev = options_stack; |
1003 | options_stack = p; | |
1004 | ||
1005 | /* Save optimization and target flags in binary format. */ | |
bf7b5747 ST |
1006 | p->optimize_binary = build_optimization_node (&global_options); |
1007 | p->target_binary = build_target_option_node (&global_options); | |
5779e713 MM |
1008 | |
1009 | /* Save optimization and target flags in string list format. */ | |
1010 | p->optimize_strings = copy_list (current_optimize_pragma); | |
1011 | p->target_strings = copy_list (current_target_pragma); | |
1012 | } | |
1013 | ||
1014 | /* Handle #pragma GCC pop_options to restore the current target and | |
1015 | optimization options from a previous push_options. */ | |
1016 | ||
1017 | static void | |
1018 | handle_pragma_pop_options (cpp_reader *ARG_UNUSED(dummy)) | |
1019 | { | |
1020 | enum cpp_ttype token; | |
1021 | tree x = 0; | |
1022 | opt_stack *p; | |
1023 | ||
1024 | token = pragma_lex (&x); | |
1025 | if (token != CPP_EOF) | |
1026 | { | |
1027 | warning (OPT_Wpragmas, "junk at end of %<#pragma pop_options%>"); | |
1028 | return; | |
1029 | } | |
1030 | ||
1031 | if (! options_stack) | |
1032 | { | |
1033 | warning (OPT_Wpragmas, | |
1034 | "%<#pragma GCC pop_options%> without a corresponding " | |
1035 | "%<#pragma GCC push_options%>"); | |
1036 | return; | |
1037 | } | |
1038 | ||
1039 | p = options_stack; | |
1040 | options_stack = p->prev; | |
1041 | ||
1042 | if (p->target_binary != target_option_current_node) | |
1043 | { | |
1044 | (void) targetm.target_option.pragma_parse (NULL_TREE, p->target_binary); | |
1045 | target_option_current_node = p->target_binary; | |
1046 | } | |
1047 | ||
1048 | if (p->optimize_binary != optimization_current_node) | |
1049 | { | |
1050 | tree old_optimize = optimization_current_node; | |
46625112 JM |
1051 | cl_optimization_restore (&global_options, |
1052 | TREE_OPTIMIZATION (p->optimize_binary)); | |
5779e713 MM |
1053 | c_cpp_builtins_optimize_pragma (parse_in, old_optimize, |
1054 | p->optimize_binary); | |
1055 | optimization_current_node = p->optimize_binary; | |
1056 | } | |
1057 | ||
1058 | current_target_pragma = p->target_strings; | |
1059 | current_optimize_pragma = p->optimize_strings; | |
1060 | } | |
1061 | ||
1062 | /* Handle #pragma GCC reset_options to restore the current target and | |
1063 | optimization options to the original options used on the command line. */ | |
1064 | ||
1065 | static void | |
1066 | handle_pragma_reset_options (cpp_reader *ARG_UNUSED(dummy)) | |
1067 | { | |
1068 | enum cpp_ttype token; | |
1069 | tree x = 0; | |
1070 | tree new_optimize = optimization_default_node; | |
1071 | tree new_target = target_option_default_node; | |
1072 | ||
1073 | token = pragma_lex (&x); | |
1074 | if (token != CPP_EOF) | |
1075 | { | |
1076 | warning (OPT_Wpragmas, "junk at end of %<#pragma reset_options%>"); | |
1077 | return; | |
1078 | } | |
1079 | ||
1080 | if (new_target != target_option_current_node) | |
1081 | { | |
1082 | (void) targetm.target_option.pragma_parse (NULL_TREE, new_target); | |
1083 | target_option_current_node = new_target; | |
1084 | } | |
1085 | ||
1086 | if (new_optimize != optimization_current_node) | |
1087 | { | |
1088 | tree old_optimize = optimization_current_node; | |
46625112 JM |
1089 | cl_optimization_restore (&global_options, |
1090 | TREE_OPTIMIZATION (new_optimize)); | |
5779e713 MM |
1091 | c_cpp_builtins_optimize_pragma (parse_in, old_optimize, new_optimize); |
1092 | optimization_current_node = new_optimize; | |
1093 | } | |
1094 | ||
1095 | current_target_pragma = NULL_TREE; | |
1096 | current_optimize_pragma = NULL_TREE; | |
1097 | } | |
1098 | ||
0d48657d SB |
1099 | /* Print a plain user-specified message. */ |
1100 | ||
1101 | static void | |
1102 | handle_pragma_message (cpp_reader *ARG_UNUSED(dummy)) | |
1103 | { | |
1104 | enum cpp_ttype token; | |
1105 | tree x, message = 0; | |
1106 | ||
1107 | token = pragma_lex (&x); | |
1108 | if (token == CPP_OPEN_PAREN) | |
1109 | { | |
1110 | token = pragma_lex (&x); | |
1111 | if (token == CPP_STRING) | |
1112 | message = x; | |
1113 | else | |
1114 | GCC_BAD ("expected a string after %<#pragma message%>"); | |
1115 | if (pragma_lex (&x) != CPP_CLOSE_PAREN) | |
1116 | GCC_BAD ("malformed %<#pragma message%>, ignored"); | |
1117 | } | |
1118 | else if (token == CPP_STRING) | |
1119 | message = x; | |
1120 | else | |
1121 | GCC_BAD ("expected a string after %<#pragma message%>"); | |
1122 | ||
1123 | gcc_assert (message); | |
1124 | ||
1125 | if (pragma_lex (&x) != CPP_EOF) | |
1126 | warning (OPT_Wpragmas, "junk at end of %<#pragma message%>"); | |
1127 | ||
1128 | if (TREE_STRING_LENGTH (message) > 1) | |
1f5b3869 | 1129 | inform (input_location, "#pragma message: %s", TREE_STRING_POINTER (message)); |
0d48657d SB |
1130 | } |
1131 | ||
6ec637a4 JJ |
1132 | /* Mark whether the current location is valid for a STDC pragma. */ |
1133 | ||
1134 | static bool valid_location_for_stdc_pragma; | |
1135 | ||
1136 | void | |
1137 | mark_valid_location_for_stdc_pragma (bool flag) | |
1138 | { | |
1139 | valid_location_for_stdc_pragma = flag; | |
1140 | } | |
1141 | ||
1142 | /* Return true if the current location is valid for a STDC pragma. */ | |
1143 | ||
1144 | bool | |
1145 | valid_location_for_stdc_pragma_p (void) | |
1146 | { | |
1147 | return valid_location_for_stdc_pragma; | |
1148 | } | |
1149 | ||
7de1d221 | 1150 | enum pragma_switch_t { PRAGMA_ON, PRAGMA_OFF, PRAGMA_DEFAULT, PRAGMA_BAD }; |
6ec637a4 JJ |
1151 | |
1152 | /* A STDC pragma must appear outside of external declarations or | |
1153 | preceding all explicit declarations and statements inside a compound | |
1154 | statement; its behavior is undefined if used in any other context. | |
1155 | It takes a switch of ON, OFF, or DEFAULT. */ | |
1156 | ||
1157 | static enum pragma_switch_t | |
1158 | handle_stdc_pragma (const char *pname) | |
1159 | { | |
1160 | const char *arg; | |
1161 | tree t; | |
1162 | enum pragma_switch_t ret; | |
1163 | ||
1164 | if (!valid_location_for_stdc_pragma_p ()) | |
1165 | { | |
1166 | warning (OPT_Wpragmas, "invalid location for %<pragma %s%>, ignored", | |
1167 | pname); | |
7de1d221 | 1168 | return PRAGMA_BAD; |
6ec637a4 JJ |
1169 | } |
1170 | ||
1171 | if (pragma_lex (&t) != CPP_NAME) | |
1172 | { | |
1173 | warning (OPT_Wpragmas, "malformed %<#pragma %s%>, ignored", pname); | |
7de1d221 | 1174 | return PRAGMA_BAD; |
6ec637a4 JJ |
1175 | } |
1176 | ||
1177 | arg = IDENTIFIER_POINTER (t); | |
1178 | ||
1179 | if (!strcmp (arg, "ON")) | |
7de1d221 | 1180 | ret = PRAGMA_ON; |
6ec637a4 | 1181 | else if (!strcmp (arg, "OFF")) |
7de1d221 | 1182 | ret = PRAGMA_OFF; |
6ec637a4 | 1183 | else if (!strcmp (arg, "DEFAULT")) |
7de1d221 | 1184 | ret = PRAGMA_DEFAULT; |
6ec637a4 JJ |
1185 | else |
1186 | { | |
1187 | warning (OPT_Wpragmas, "malformed %<#pragma %s%>, ignored", pname); | |
7de1d221 | 1188 | return PRAGMA_BAD; |
6ec637a4 JJ |
1189 | } |
1190 | ||
1191 | if (pragma_lex (&t) != CPP_EOF) | |
1192 | { | |
1193 | warning (OPT_Wpragmas, "junk at end of %<#pragma %s%>", pname); | |
7de1d221 | 1194 | return PRAGMA_BAD; |
6ec637a4 JJ |
1195 | } |
1196 | ||
1197 | return ret; | |
1198 | } | |
1199 | ||
1200 | /* #pragma STDC FLOAT_CONST_DECIMAL64 ON | |
1201 | #pragma STDC FLOAT_CONST_DECIMAL64 OFF | |
1202 | #pragma STDC FLOAT_CONST_DECIMAL64 DEFAULT */ | |
1203 | ||
1204 | static void | |
1205 | handle_pragma_float_const_decimal64 (cpp_reader *ARG_UNUSED (dummy)) | |
1206 | { | |
1207 | if (c_dialect_cxx ()) | |
1208 | { | |
8400e75e | 1209 | if (warn_unknown_pragmas > in_system_header_at (input_location)) |
6ec637a4 JJ |
1210 | warning (OPT_Wunknown_pragmas, |
1211 | "%<#pragma STDC FLOAT_CONST_DECIMAL64%> is not supported" | |
1212 | " for C++"); | |
1213 | return; | |
1214 | } | |
1215 | ||
1216 | if (!targetm.decimal_float_supported_p ()) | |
1217 | { | |
8400e75e | 1218 | if (warn_unknown_pragmas > in_system_header_at (input_location)) |
6ec637a4 JJ |
1219 | warning (OPT_Wunknown_pragmas, |
1220 | "%<#pragma STDC FLOAT_CONST_DECIMAL64%> is not supported" | |
1221 | " on this target"); | |
1222 | return; | |
1223 | } | |
1224 | ||
c1771a20 | 1225 | pedwarn (input_location, OPT_Wpedantic, |
6ec637a4 JJ |
1226 | "ISO C does not support %<#pragma STDC FLOAT_CONST_DECIMAL64%>"); |
1227 | ||
1228 | switch (handle_stdc_pragma ("STDC FLOAT_CONST_DECIMAL64")) | |
1229 | { | |
7de1d221 | 1230 | case PRAGMA_ON: |
6ec637a4 JJ |
1231 | set_float_const_decimal64 (); |
1232 | break; | |
7de1d221 JJ |
1233 | case PRAGMA_OFF: |
1234 | case PRAGMA_DEFAULT: | |
6ec637a4 JJ |
1235 | clear_float_const_decimal64 (); |
1236 | break; | |
7de1d221 | 1237 | case PRAGMA_BAD: |
6ec637a4 JJ |
1238 | break; |
1239 | } | |
1240 | } | |
1241 | ||
dfb43cd5 | 1242 | /* A vector of registered pragma callbacks, which is never freed. */ |
bc4071dd | 1243 | |
9771b263 | 1244 | static vec<internal_pragma_handler> registered_pragmas; |
bc4071dd | 1245 | |
a79683d5 | 1246 | struct pragma_ns_name |
a25a8f3b JJ |
1247 | { |
1248 | const char *space; | |
1249 | const char *name; | |
a79683d5 | 1250 | }; |
a25a8f3b | 1251 | |
a25a8f3b | 1252 | |
9771b263 | 1253 | static vec<pragma_ns_name> registered_pp_pragmas; |
a25a8f3b JJ |
1254 | |
1255 | struct omp_pragma_def { const char *name; unsigned int id; }; | |
41dbbb37 | 1256 | static const struct omp_pragma_def oacc_pragmas[] = { |
4bf9e5a8 | 1257 | { "atomic", PRAGMA_OACC_ATOMIC }, |
41dbbb37 TS |
1258 | { "cache", PRAGMA_OACC_CACHE }, |
1259 | { "data", PRAGMA_OACC_DATA }, | |
6e232ba4 | 1260 | { "declare", PRAGMA_OACC_DECLARE }, |
41dbbb37 TS |
1261 | { "enter", PRAGMA_OACC_ENTER_DATA }, |
1262 | { "exit", PRAGMA_OACC_EXIT_DATA }, | |
37d5ad46 | 1263 | { "host_data", PRAGMA_OACC_HOST_DATA }, |
41dbbb37 TS |
1264 | { "kernels", PRAGMA_OACC_KERNELS }, |
1265 | { "loop", PRAGMA_OACC_LOOP }, | |
1266 | { "parallel", PRAGMA_OACC_PARALLEL }, | |
3a40d81d | 1267 | { "routine", PRAGMA_OACC_ROUTINE }, |
41dbbb37 TS |
1268 | { "update", PRAGMA_OACC_UPDATE }, |
1269 | { "wait", PRAGMA_OACC_WAIT } | |
1270 | }; | |
a25a8f3b JJ |
1271 | static const struct omp_pragma_def omp_pragmas[] = { |
1272 | { "atomic", PRAGMA_OMP_ATOMIC }, | |
1273 | { "barrier", PRAGMA_OMP_BARRIER }, | |
acf0174b JJ |
1274 | { "cancel", PRAGMA_OMP_CANCEL }, |
1275 | { "cancellation", PRAGMA_OMP_CANCELLATION_POINT }, | |
a25a8f3b | 1276 | { "critical", PRAGMA_OMP_CRITICAL }, |
acf0174b | 1277 | { "end", PRAGMA_OMP_END_DECLARE_TARGET }, |
a25a8f3b | 1278 | { "flush", PRAGMA_OMP_FLUSH }, |
a25a8f3b JJ |
1279 | { "master", PRAGMA_OMP_MASTER }, |
1280 | { "ordered", PRAGMA_OMP_ORDERED }, | |
a25a8f3b JJ |
1281 | { "section", PRAGMA_OMP_SECTION }, |
1282 | { "sections", PRAGMA_OMP_SECTIONS }, | |
1283 | { "single", PRAGMA_OMP_SINGLE }, | |
92d28cbb | 1284 | { "task", PRAGMA_OMP_TASK }, |
acf0174b | 1285 | { "taskgroup", PRAGMA_OMP_TASKGROUP }, |
a68ab351 | 1286 | { "taskwait", PRAGMA_OMP_TASKWAIT }, |
20906c66 | 1287 | { "taskyield", PRAGMA_OMP_TASKYIELD }, |
a25a8f3b JJ |
1288 | { "threadprivate", PRAGMA_OMP_THREADPRIVATE } |
1289 | }; | |
6d7f7e0a | 1290 | static const struct omp_pragma_def omp_pragmas_simd[] = { |
f9d8d994 | 1291 | { "declare", PRAGMA_OMP_DECLARE }, |
6d7f7e0a TB |
1292 | { "distribute", PRAGMA_OMP_DISTRIBUTE }, |
1293 | { "for", PRAGMA_OMP_FOR }, | |
1294 | { "parallel", PRAGMA_OMP_PARALLEL }, | |
1295 | { "simd", PRAGMA_OMP_SIMD }, | |
1296 | { "target", PRAGMA_OMP_TARGET }, | |
d9a6bd32 | 1297 | { "taskloop", PRAGMA_OMP_TASKLOOP }, |
6d7f7e0a TB |
1298 | { "teams", PRAGMA_OMP_TEAMS }, |
1299 | }; | |
a25a8f3b JJ |
1300 | |
1301 | void | |
1302 | c_pp_lookup_pragma (unsigned int id, const char **space, const char **name) | |
1303 | { | |
41dbbb37 | 1304 | const int n_oacc_pragmas = sizeof (oacc_pragmas) / sizeof (*oacc_pragmas); |
a25a8f3b | 1305 | const int n_omp_pragmas = sizeof (omp_pragmas) / sizeof (*omp_pragmas); |
6d7f7e0a TB |
1306 | const int n_omp_pragmas_simd = sizeof (omp_pragmas_simd) |
1307 | / sizeof (*omp_pragmas); | |
a25a8f3b JJ |
1308 | int i; |
1309 | ||
41dbbb37 TS |
1310 | for (i = 0; i < n_oacc_pragmas; ++i) |
1311 | if (oacc_pragmas[i].id == id) | |
1312 | { | |
1313 | *space = "acc"; | |
1314 | *name = oacc_pragmas[i].name; | |
1315 | return; | |
1316 | } | |
1317 | ||
a25a8f3b JJ |
1318 | for (i = 0; i < n_omp_pragmas; ++i) |
1319 | if (omp_pragmas[i].id == id) | |
1320 | { | |
1321 | *space = "omp"; | |
1322 | *name = omp_pragmas[i].name; | |
1323 | return; | |
1324 | } | |
1325 | ||
6d7f7e0a TB |
1326 | for (i = 0; i < n_omp_pragmas_simd; ++i) |
1327 | if (omp_pragmas_simd[i].id == id) | |
1328 | { | |
1329 | *space = "omp"; | |
1330 | *name = omp_pragmas_simd[i].name; | |
1331 | return; | |
1332 | } | |
1333 | ||
b3bdf019 JJ |
1334 | if (id == PRAGMA_CILK_SIMD) |
1335 | { | |
1336 | *space = NULL; | |
1337 | *name = "simd"; | |
1338 | return; | |
1339 | } | |
1340 | ||
871b3f47 JJ |
1341 | if (id == PRAGMA_CILK_GRAINSIZE) |
1342 | { | |
1343 | *space = "cilk"; | |
1344 | *name = "grainsize"; | |
1345 | return; | |
1346 | } | |
1347 | ||
a25a8f3b | 1348 | if (id >= PRAGMA_FIRST_EXTERNAL |
9771b263 | 1349 | && (id < PRAGMA_FIRST_EXTERNAL + registered_pp_pragmas.length ())) |
a25a8f3b | 1350 | { |
9771b263 DN |
1351 | *space = registered_pp_pragmas[id - PRAGMA_FIRST_EXTERNAL].space; |
1352 | *name = registered_pp_pragmas[id - PRAGMA_FIRST_EXTERNAL].name; | |
a25a8f3b JJ |
1353 | return; |
1354 | } | |
1355 | ||
1356 | gcc_unreachable (); | |
1357 | } | |
1358 | ||
b5b3e36a | 1359 | /* Front-end wrappers for pragma registration to avoid dragging |
c58b209a | 1360 | cpplib.h in almost everywhere. */ |
bc4071dd RH |
1361 | |
1362 | static void | |
1363 | c_register_pragma_1 (const char *space, const char *name, | |
dfb43cd5 | 1364 | internal_pragma_handler ihandler, bool allow_expansion) |
bc4071dd RH |
1365 | { |
1366 | unsigned id; | |
1367 | ||
a25a8f3b JJ |
1368 | if (flag_preprocess_only) |
1369 | { | |
1370 | pragma_ns_name ns_name; | |
bc4071dd | 1371 | |
a25a8f3b JJ |
1372 | if (!allow_expansion) |
1373 | return; | |
1374 | ||
1375 | ns_name.space = space; | |
1376 | ns_name.name = name; | |
9771b263 DN |
1377 | registered_pp_pragmas.safe_push (ns_name); |
1378 | id = registered_pp_pragmas.length (); | |
a25a8f3b JJ |
1379 | id += PRAGMA_FIRST_EXTERNAL - 1; |
1380 | } | |
1381 | else | |
1382 | { | |
9771b263 DN |
1383 | registered_pragmas.safe_push (ihandler); |
1384 | id = registered_pragmas.length (); | |
a25a8f3b JJ |
1385 | id += PRAGMA_FIRST_EXTERNAL - 1; |
1386 | ||
e0a575ff JJ |
1387 | /* The C front end allocates 8 bits in c_token. The C++ front end |
1388 | keeps the pragma kind in the form of INTEGER_CST, so no small | |
1389 | limit applies. At present this is sufficient. */ | |
4ac93c7c | 1390 | gcc_assert (id < 256); |
a25a8f3b | 1391 | } |
bc4071dd RH |
1392 | |
1393 | cpp_register_deferred_pragma (parse_in, space, name, id, | |
1394 | allow_expansion, false); | |
1395 | } | |
1396 | ||
dfb43cd5 PV |
1397 | /* Register a C pragma handler, using a space and a name. It disallows pragma |
1398 | expansion (if you want it, use c_register_pragma_with_expansion instead). */ | |
1399 | void | |
1400 | c_register_pragma (const char *space, const char *name, | |
1401 | pragma_handler_1arg handler) | |
1402 | { | |
1403 | internal_pragma_handler ihandler; | |
1404 | ||
1405 | ihandler.handler.handler_1arg = handler; | |
1406 | ihandler.extra_data = false; | |
1407 | ihandler.data = NULL; | |
1408 | c_register_pragma_1 (space, name, ihandler, false); | |
1409 | } | |
1410 | ||
1411 | /* Register a C pragma handler, using a space and a name, it also carries an | |
1412 | extra data field which can be used by the handler. It disallows pragma | |
1413 | expansion (if you want it, use c_register_pragma_with_expansion_and_data | |
1414 | instead). */ | |
c58b209a | 1415 | void |
dfb43cd5 PV |
1416 | c_register_pragma_with_data (const char *space, const char *name, |
1417 | pragma_handler_2arg handler, void * data) | |
c58b209a | 1418 | { |
dfb43cd5 PV |
1419 | internal_pragma_handler ihandler; |
1420 | ||
1421 | ihandler.handler.handler_2arg = handler; | |
1422 | ihandler.extra_data = true; | |
1423 | ihandler.data = data; | |
1424 | c_register_pragma_1 (space, name, ihandler, false); | |
b5b3e36a DJ |
1425 | } |
1426 | ||
dfb43cd5 PV |
1427 | /* Register a C pragma handler, using a space and a name. It allows pragma |
1428 | expansion as in the following example: | |
1429 | ||
1430 | #define NUMBER 10 | |
1431 | #pragma count (NUMBER) | |
1432 | ||
1433 | Name expansion is still disallowed. */ | |
b5b3e36a DJ |
1434 | void |
1435 | c_register_pragma_with_expansion (const char *space, const char *name, | |
dfb43cd5 | 1436 | pragma_handler_1arg handler) |
bc4071dd | 1437 | { |
dfb43cd5 PV |
1438 | internal_pragma_handler ihandler; |
1439 | ||
1440 | ihandler.handler.handler_1arg = handler; | |
1441 | ihandler.extra_data = false; | |
1442 | ihandler.data = NULL; | |
1443 | c_register_pragma_1 (space, name, ihandler, true); | |
1444 | } | |
1445 | ||
1446 | /* Register a C pragma handler, using a space and a name, it also carries an | |
1447 | extra data field which can be used by the handler. It allows pragma | |
1448 | expansion as in the following example: | |
1449 | ||
1450 | #define NUMBER 10 | |
1451 | #pragma count (NUMBER) | |
1452 | ||
1453 | Name expansion is still disallowed. */ | |
1454 | void | |
1455 | c_register_pragma_with_expansion_and_data (const char *space, const char *name, | |
1456 | pragma_handler_2arg handler, | |
1457 | void *data) | |
1458 | { | |
1459 | internal_pragma_handler ihandler; | |
1460 | ||
1461 | ihandler.handler.handler_2arg = handler; | |
1462 | ihandler.extra_data = true; | |
1463 | ihandler.data = data; | |
1464 | c_register_pragma_1 (space, name, ihandler, true); | |
bc4071dd RH |
1465 | } |
1466 | ||
1467 | void | |
1468 | c_invoke_pragma_handler (unsigned int id) | |
b5b3e36a | 1469 | { |
dfb43cd5 PV |
1470 | internal_pragma_handler *ihandler; |
1471 | pragma_handler_1arg handler_1arg; | |
1472 | pragma_handler_2arg handler_2arg; | |
bc4071dd RH |
1473 | |
1474 | id -= PRAGMA_FIRST_EXTERNAL; | |
9771b263 | 1475 | ihandler = ®istered_pragmas[id]; |
dfb43cd5 PV |
1476 | if (ihandler->extra_data) |
1477 | { | |
1478 | handler_2arg = ihandler->handler.handler_2arg; | |
1479 | handler_2arg (parse_in, ihandler->data); | |
1480 | } | |
1481 | else | |
1482 | { | |
1483 | handler_1arg = ihandler->handler.handler_1arg; | |
1484 | handler_1arg (parse_in); | |
1485 | } | |
c58b209a NB |
1486 | } |
1487 | ||
1488 | /* Set up front-end pragmas. */ | |
568767a6 | 1489 | void |
35b1a6fa | 1490 | init_pragma (void) |
568767a6 | 1491 | { |
41dbbb37 TS |
1492 | if (flag_openacc) |
1493 | { | |
1494 | const int n_oacc_pragmas | |
1495 | = sizeof (oacc_pragmas) / sizeof (*oacc_pragmas); | |
1496 | int i; | |
1497 | ||
1498 | for (i = 0; i < n_oacc_pragmas; ++i) | |
1499 | cpp_register_deferred_pragma (parse_in, "acc", oacc_pragmas[i].name, | |
1500 | oacc_pragmas[i].id, true, true); | |
1501 | } | |
1502 | ||
a25a8f3b | 1503 | if (flag_openmp) |
953ff289 | 1504 | { |
953ff289 DN |
1505 | const int n_omp_pragmas = sizeof (omp_pragmas) / sizeof (*omp_pragmas); |
1506 | int i; | |
1507 | ||
1508 | for (i = 0; i < n_omp_pragmas; ++i) | |
1509 | cpp_register_deferred_pragma (parse_in, "omp", omp_pragmas[i].name, | |
1510 | omp_pragmas[i].id, true, true); | |
1511 | } | |
6d7f7e0a TB |
1512 | if (flag_openmp || flag_openmp_simd) |
1513 | { | |
1514 | const int n_omp_pragmas_simd = sizeof (omp_pragmas_simd) | |
1515 | / sizeof (*omp_pragmas); | |
1516 | int i; | |
1517 | ||
1518 | for (i = 0; i < n_omp_pragmas_simd; ++i) | |
1519 | cpp_register_deferred_pragma (parse_in, "omp", omp_pragmas_simd[i].name, | |
1520 | omp_pragmas_simd[i].id, true, true); | |
1521 | } | |
953ff289 | 1522 | |
b3bdf019 | 1523 | if (flag_cilkplus) |
c02065fc AH |
1524 | cpp_register_deferred_pragma (parse_in, NULL, "simd", PRAGMA_CILK_SIMD, |
1525 | true, false); | |
1526 | ||
a25a8f3b JJ |
1527 | if (!flag_preprocess_only) |
1528 | cpp_register_deferred_pragma (parse_in, "GCC", "pch_preprocess", | |
1529 | PRAGMA_GCC_PCH_PREPROCESS, false, false); | |
bc4071dd | 1530 | |
28e41874 JJ |
1531 | if (!flag_preprocess_only) |
1532 | cpp_register_deferred_pragma (parse_in, "GCC", "ivdep", PRAGMA_IVDEP, false, | |
1533 | false); | |
9a771876 | 1534 | |
871b3f47 | 1535 | if (flag_cilkplus) |
9a771876 JJ |
1536 | cpp_register_deferred_pragma (parse_in, "cilk", "grainsize", |
1537 | PRAGMA_CILK_GRAINSIZE, true, false); | |
1538 | ||
b5b3e36a DJ |
1539 | #ifdef HANDLE_PRAGMA_PACK_WITH_EXPANSION |
1540 | c_register_pragma_with_expansion (0, "pack", handle_pragma_pack); | |
1541 | #else | |
c58b209a | 1542 | c_register_pragma (0, "pack", handle_pragma_pack); |
0e5921e8 | 1543 | #endif |
c58b209a | 1544 | c_register_pragma (0, "weak", handle_pragma_weak); |
ee45a32d | 1545 | |
d7afec4b | 1546 | c_register_pragma ("GCC", "visibility", handle_pragma_visibility); |
84b8b0e0 | 1547 | |
79cf5994 | 1548 | c_register_pragma ("GCC", "diagnostic", handle_pragma_diagnostic); |
5779e713 | 1549 | c_register_pragma ("GCC", "target", handle_pragma_target); |
ab442df7 | 1550 | c_register_pragma ("GCC", "optimize", handle_pragma_optimize); |
5779e713 MM |
1551 | c_register_pragma ("GCC", "push_options", handle_pragma_push_options); |
1552 | c_register_pragma ("GCC", "pop_options", handle_pragma_pop_options); | |
1553 | c_register_pragma ("GCC", "reset_options", handle_pragma_reset_options); | |
79cf5994 | 1554 | |
6ec637a4 JJ |
1555 | c_register_pragma ("STDC", "FLOAT_CONST_DECIMAL64", |
1556 | handle_pragma_float_const_decimal64); | |
1557 | ||
dfb43cd5 PV |
1558 | c_register_pragma_with_expansion (0, "redefine_extname", |
1559 | handle_pragma_redefine_extname); | |
41c64394 | 1560 | |
0d48657d SB |
1561 | c_register_pragma_with_expansion (0, "message", handle_pragma_message); |
1562 | ||
8b97c5f8 | 1563 | #ifdef REGISTER_TARGET_PRAGMAS |
c58b209a | 1564 | REGISTER_TARGET_PRAGMAS (); |
8b97c5f8 | 1565 | #endif |
7ac8318c | 1566 | |
ee45a32d EB |
1567 | global_sso = default_sso; |
1568 | c_register_pragma (0, "scalar_storage_order", | |
1569 | handle_pragma_scalar_storage_order); | |
1570 | ||
7ac8318c BS |
1571 | /* Allow plugins to register their own pragmas. */ |
1572 | invoke_plugin_callbacks (PLUGIN_PRAGMAS, NULL); | |
568767a6 | 1573 | } |
e2500fed | 1574 | |
39dabefd | 1575 | #include "gt-c-family-c-pragma.h" |