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202d6e5f | 1 | /* Target hook definitions. |
fba5dd52 | 2 | Copyright (C) 2001, 2002, 2003, 2004, 2005, 2006, 2007, 2008, 2009, 2010, |
3 | 2011 | |
202d6e5f | 4 | Free Software Foundation, Inc. |
5 | ||
6 | This program is free software; you can redistribute it and/or modify it | |
7 | under the terms of the GNU General Public License as published by the | |
8 | Free Software Foundation; either version 3, or (at your option) any | |
9 | later version. | |
10 | ||
11 | This program is distributed in the hope that it will be useful, | |
12 | but WITHOUT ANY WARRANTY; without even the implied warranty of | |
13 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
14 | GNU General Public License for more details. | |
15 | ||
16 | You should have received a copy of the GNU General Public License | |
17 | along with this program; see the file COPYING3. If not see | |
18 | <http://www.gnu.org/licenses/>. | |
19 | ||
20 | In other words, you are welcome to use, share and improve this program. | |
21 | You are forbidden to forbid anyone else to use, share and improve | |
22 | what you give them. Help stamp out software-hoarding! */ | |
23 | ||
24 | /* The following macros should be provided by the including file: | |
25 | ||
26 | DEFHOOK(NAME, DOC, TYPE, PARAMS, INIT): Define a function-valued hook. | |
27 | DEFHOOKPOD(DOC, TYPE, NAME, INIT): Define a piece-of-data 'hook'. */ | |
28 | ||
29 | /* Defaults for optional macros: | |
30 | DEFHOOKPODX(NAME, TYPE, INIT): Like DEFHOOKPOD, but share documentation | |
31 | with the previous 'hook'. */ | |
32 | #ifndef DEFHOOKPODX | |
33 | #define DEFHOOKPODX(NAME, TYPE, INIT) DEFHOOKPOD (NAME, 0, TYPE, INIT) | |
34 | #endif | |
35 | ||
36 | /* HOOKSTRUCT(FRAGMENT): Declarator fragments to encapsulate all the | |
37 | members into a struct gcc_target, which in turn contains several | |
38 | sub-structs. */ | |
39 | #ifndef HOOKSTRUCT | |
40 | #define HOOKSTRUCT(FRAGMENT) | |
41 | #endif | |
42 | /* HOOK_VECTOR: Start a struct declaration, which then gets its own initializer. | |
43 | HOOK_VECTOR_END: Close a struct declaration, providing a member declarator | |
44 | name for nested use. */ | |
45 | #ifndef HOOK_VECTOR_1 | |
46 | #define HOOK_VECTOR_1(NAME, FRAGMENT) HOOKSTRUCT(FRAGMENT) | |
47 | #endif | |
48 | #define HOOK_VECTOR(INIT_NAME, SNAME) HOOK_VECTOR_1 (INIT_NAME, struct SNAME {) | |
49 | #define HOOK_VECTOR_END(DECL_NAME) HOOK_VECTOR_1(,} DECL_NAME ;) | |
50 | ||
51 | HOOK_VECTOR (TARGET_INITIALIZER, gcc_target) | |
52 | ||
53 | /* FIXME: For pre-existing hooks, we can't place the documentation in the | |
54 | documentation field here till we get permission from the FSF to include | |
55 | it in GPLed software - the target hook documentation is so far only | |
56 | available under the GFDL. */ | |
57 | ||
58 | /* A hook should generally be documented by a string in the DOC parameter, | |
59 | which should contain texinfo markup. If the documentation is only available | |
60 | under the GPL, but not under the GFDL, put it in a comment above the hook | |
61 | definition. If the function declaration is available both under GPL and | |
62 | GFDL, but the documentation is only available under the GFDL, put the | |
63 | documentaton in tm.texi.in, heading with @hook <hookname> and closing | |
64 | the paragraph with @end deftypefn / deftypevr as appropriate, and marking | |
65 | the next autogenerated hook with @hook <hookname>. | |
66 | In both these cases, leave the DOC string empty, i.e. "". | |
1c773655 | 67 | Sometimes, for some historic reason the function declaration |
68 | has to be documented differently | |
202d6e5f | 69 | than what it is. In that case, use DEFHOOK_UNDOC to supress auto-generation |
70 | of documentation. DEFHOOK_UNDOC takes a DOC string which it ignores, so | |
71 | you can put GPLed documentation string there if you have hopes that you | |
72 | can clear the declaration & documentation for GFDL distribution later, | |
73 | in which case you can then simply change the DEFHOOK_UNDOC to DEFHOOK | |
74 | to turn on the autogeneration of the documentation. | |
75 | ||
76 | A documentation string of "*" means not to emit any documentation at all, | |
77 | and is mainly used internally for DEFHOOK_UNDOC. It should generally not | |
78 | be used otherwise, but it has its use for exceptional cases where automatic | |
79 | documentation is not wanted, and the real documentation is elsewere, like | |
80 | for TARGET_ASM_{,UN}ALIGNED_INT_OP, which are hooks only for implementation | |
81 | purposes; they refer to structs, the components of which are documented as | |
82 | separate hooks TARGET_ASM_{,UN}ALIGNED_[HSDT]I_OP. | |
83 | A DOC string of 0 is for internal use of DEFHOOKPODX and special table | |
84 | entries only. */ | |
85 | ||
86 | /* Functions that output assembler for the target. */ | |
87 | #define HOOK_PREFIX "TARGET_ASM_" | |
88 | HOOK_VECTOR (TARGET_ASM_OUT, asm_out) | |
89 | ||
90 | /* Opening and closing parentheses for asm expression grouping. */ | |
91 | DEFHOOKPOD | |
92 | (open_paren, | |
93 | "", | |
94 | const char *, "(") | |
95 | DEFHOOKPODX (close_paren, const char *, ")") | |
96 | ||
97 | /* Assembler instructions for creating various kinds of integer object. */ | |
98 | DEFHOOKPOD | |
99 | (byte_op, | |
100 | "", | |
101 | const char *, "\t.byte\t") | |
102 | DEFHOOKPOD (aligned_op, "*", struct asm_int_op, TARGET_ASM_ALIGNED_INT_OP) | |
103 | DEFHOOKPOD (unaligned_op, "*", struct asm_int_op, TARGET_ASM_UNALIGNED_INT_OP) | |
104 | ||
ae2b9f1f | 105 | /* The maximum number of bytes to skip when applying |
106 | LABEL_ALIGN_AFTER_BARRIER. */ | |
107 | DEFHOOK | |
108 | (label_align_after_barrier_max_skip, | |
109 | "", | |
110 | int, (rtx label), | |
111 | default_label_align_after_barrier_max_skip) | |
112 | ||
113 | /* The maximum number of bytes to skip when applying | |
114 | LOOP_ALIGN. */ | |
115 | DEFHOOK | |
116 | (loop_align_max_skip, | |
117 | "", | |
118 | int, (rtx label), | |
119 | default_loop_align_max_skip) | |
120 | ||
121 | /* The maximum number of bytes to skip when applying | |
122 | LABEL_ALIGN. */ | |
123 | DEFHOOK | |
124 | (label_align_max_skip, | |
125 | "", | |
126 | int, (rtx label), | |
127 | default_label_align_max_skip) | |
128 | ||
129 | /* The maximum number of bytes to skip when applying | |
130 | JUMP_ALIGN. */ | |
131 | DEFHOOK | |
132 | (jump_align_max_skip, | |
133 | "", | |
134 | int, (rtx label), | |
135 | default_jump_align_max_skip) | |
136 | ||
202d6e5f | 137 | /* Try to output the assembler code for an integer object whose |
138 | value is given by X. SIZE is the size of the object in bytes and | |
139 | ALIGNED_P indicates whether it is aligned. Return true if | |
140 | successful. Only handles cases for which BYTE_OP, ALIGNED_OP | |
141 | and UNALIGNED_OP are NULL. */ | |
142 | DEFHOOK | |
143 | (integer, | |
144 | "", | |
145 | /* Only handles cases for which BYTE_OP, ALIGNED_OP and UNALIGNED_OP are | |
146 | NULL. */ | |
147 | bool, (rtx x, unsigned int size, int aligned_p), | |
148 | default_assemble_integer) | |
149 | ||
150 | /* Output code that will globalize a label. */ | |
151 | DEFHOOK | |
152 | (globalize_label, | |
153 | "", | |
154 | void, (FILE *stream, const char *name), | |
155 | default_globalize_label) | |
156 | ||
157 | /* Output code that will globalize a declaration. */ | |
158 | DEFHOOK | |
159 | (globalize_decl_name, | |
160 | "", | |
161 | void, (FILE *stream, tree decl), default_globalize_decl_name) | |
162 | ||
163 | /* Output code that will emit a label for unwind info, if this | |
164 | target requires such labels. Second argument is the decl the | |
165 | unwind info is associated with, third is a boolean: true if | |
166 | this is for exception handling, fourth is a boolean: true if | |
167 | this is only a placeholder for an omitted FDE. */ | |
168 | DEFHOOK | |
169 | (emit_unwind_label, | |
170 | "", | |
171 | void, (FILE *stream, tree decl, int for_eh, int empty), | |
172 | default_emit_unwind_label) | |
173 | ||
174 | /* Output code that will emit a label to divide up the exception table. */ | |
175 | DEFHOOK | |
176 | (emit_except_table_label, | |
177 | "", | |
178 | void, (FILE *stream), | |
179 | default_emit_except_table_label) | |
180 | ||
37966699 | 181 | /* Emit a directive for setting the personality for the function. */ |
182 | DEFHOOK | |
183 | (emit_except_personality, | |
184 | "If the target implements @code{TARGET_ASM_UNWIND_EMIT}, this hook may be\ | |
185 | used to emit a directive to install a personality hook into the unwind\ | |
186 | info. This hook should not be used if dwarf2 unwind info is used.", | |
187 | void, (rtx personality), | |
188 | NULL) | |
189 | ||
202d6e5f | 190 | /* Emit any directives required to unwind this instruction. */ |
191 | DEFHOOK | |
192 | (unwind_emit, | |
193 | "", | |
194 | void, (FILE *stream, rtx insn), | |
53b72e99 | 195 | NULL) |
202d6e5f | 196 | |
f3e8e368 | 197 | DEFHOOKPOD |
198 | (unwind_emit_before_insn, | |
199 | "True if the @code{TARGET_ASM_UNWIND_EMIT} hook should be called before\ | |
200 | the assembly for @var{insn} has been emitted, false if the hook should\ | |
201 | be called afterward.", | |
202 | bool, true) | |
203 | ||
cb274b8f | 204 | /* Generate an internal label. |
205 | For now this is just a wrapper for ASM_GENERATE_INTERNAL_LABEL. */ | |
206 | DEFHOOK_UNDOC | |
207 | (generate_internal_label, | |
208 | "", | |
209 | void, (char *buf, const char *prefix, unsigned long labelno), | |
210 | default_generate_internal_label) | |
211 | ||
202d6e5f | 212 | /* Output an internal label. */ |
213 | DEFHOOK | |
214 | (internal_label, | |
215 | "", | |
216 | void, (FILE *stream, const char *prefix, unsigned long labelno), | |
217 | default_internal_label) | |
218 | ||
219 | /* Output label for the constant. */ | |
8c38d114 | 220 | DEFHOOK |
202d6e5f | 221 | (declare_constant_name, |
222 | "", | |
8c38d114 | 223 | void, (FILE *file, const char *name, const_tree expr, HOST_WIDE_INT size), |
202d6e5f | 224 | default_asm_declare_constant_name) |
225 | ||
226 | /* Emit a ttype table reference to a typeinfo object. */ | |
227 | DEFHOOK | |
228 | (ttype, | |
229 | "", | |
230 | bool, (rtx sym), | |
231 | hook_bool_rtx_false) | |
232 | ||
233 | /* Emit an assembler directive to set visibility for the symbol | |
234 | associated with the tree decl. */ | |
235 | DEFHOOK | |
236 | (assemble_visibility, | |
237 | "", | |
238 | void, (tree decl, int visibility), | |
239 | default_assemble_visibility) | |
240 | ||
241 | /* Output the assembler code for entry to a function. */ | |
242 | DEFHOOK | |
243 | (function_prologue, | |
244 | "", | |
245 | void, (FILE *file, HOST_WIDE_INT size), | |
246 | default_function_pro_epilogue) | |
247 | ||
248 | /* Output the assembler code for end of prologue. */ | |
249 | DEFHOOK | |
250 | (function_end_prologue, | |
251 | "", | |
252 | void, (FILE *file), | |
253 | no_asm_to_stream) | |
254 | ||
255 | /* Output the assembler code for start of epilogue. */ | |
256 | DEFHOOK | |
257 | (function_begin_epilogue, | |
258 | "", | |
259 | void, (FILE *file), | |
260 | no_asm_to_stream) | |
261 | ||
262 | /* Output the assembler code for function exit. */ | |
263 | DEFHOOK | |
264 | (function_epilogue, | |
265 | "", | |
266 | void, (FILE *file, HOST_WIDE_INT size), | |
267 | default_function_pro_epilogue) | |
268 | ||
269 | /* Initialize target-specific sections. */ | |
270 | DEFHOOK | |
271 | (init_sections, | |
272 | "", | |
273 | void, (void), | |
274 | hook_void_void) | |
275 | ||
276 | /* Tell assembler to change to section NAME with attributes FLAGS. | |
277 | If DECL is non-NULL, it is the VAR_DECL or FUNCTION_DECL with | |
278 | which this section is associated. */ | |
279 | DEFHOOK | |
280 | (named_section, | |
281 | "", | |
282 | void, (const char *name, unsigned int flags, tree decl), | |
283 | default_no_named_section) | |
284 | ||
3b73548b | 285 | /* Return preferred text (sub)section for function DECL. |
286 | Main purpose of this function is to separate cold, normal and hot | |
287 | functions. STARTUP is true when function is known to be used only | |
288 | at startup (from static constructors or it is main()). | |
289 | EXIT is true when function is known to be used only at exit | |
290 | (from static destructors). | |
291 | Return NULL if function should go to default text section. */ | |
292 | DEFHOOK | |
293 | (function_section, | |
294 | "", | |
295 | section *, (tree decl, enum node_frequency freq, bool startup, bool exit), | |
296 | default_function_section) | |
297 | ||
3b3edcd4 | 298 | /* Output the assembler code for function exit. */ |
299 | DEFHOOK | |
300 | (function_switched_text_sections, | |
301 | "Used by the target to emit any assembler directives or additional\ | |
302 | labels needed when a function is partitioned between different\ | |
303 | sections. Output should be written to @var{file}. The function\ | |
304 | decl is available as @var{decl} and the new section is `cold' if\ | |
305 | @var{new_is_cold} is @code{true}.", | |
306 | void, (FILE *file, tree decl, bool new_is_cold), | |
307 | default_function_switched_text_sections) | |
308 | ||
202d6e5f | 309 | /* Return a mask describing how relocations should be treated when |
310 | selecting sections. Bit 1 should be set if global relocations | |
311 | should be placed in a read-write section; bit 0 should be set if | |
312 | local relocations should be placed in a read-write section. */ | |
313 | DEFHOOK | |
314 | (reloc_rw_mask, | |
315 | "", | |
316 | int, (void), | |
317 | default_reloc_rw_mask) | |
318 | ||
319 | /* Return a section for EXP. It may be a DECL or a constant. RELOC | |
320 | is nonzero if runtime relocations must be applied; bit 1 will be | |
321 | set if the runtime relocations require non-local name resolution. | |
322 | ALIGN is the required alignment of the data. */ | |
323 | DEFHOOK | |
324 | (select_section, | |
325 | "", | |
326 | section *, (tree exp, int reloc, unsigned HOST_WIDE_INT align), | |
327 | default_select_section) | |
328 | ||
329 | /* Return a section for X. MODE is X's mode and ALIGN is its | |
330 | alignment in bits. */ | |
331 | DEFHOOK | |
332 | (select_rtx_section, | |
333 | "", | |
334 | section *, (enum machine_mode mode, rtx x, unsigned HOST_WIDE_INT align), | |
335 | default_select_rtx_section) | |
336 | ||
337 | /* Select a unique section name for DECL. RELOC is the same as | |
338 | for SELECT_SECTION. */ | |
339 | DEFHOOK | |
340 | (unique_section, | |
341 | "", | |
342 | void, (tree decl, int reloc), | |
343 | default_unique_section) | |
344 | ||
345 | /* Return the readonly data section associated with function DECL. */ | |
346 | DEFHOOK | |
347 | (function_rodata_section, | |
348 | "", | |
349 | section *, (tree decl), | |
350 | default_function_rodata_section) | |
351 | ||
352 | /* Output a constructor for a symbol with a given priority. */ | |
353 | DEFHOOK | |
354 | (constructor, | |
355 | "", | |
356 | void, (rtx symbol, int priority), NULL) | |
357 | ||
358 | /* Output a destructor for a symbol with a given priority. */ | |
359 | DEFHOOK | |
360 | (destructor, | |
361 | "", | |
362 | void, (rtx symbol, int priority), NULL) | |
363 | ||
364 | /* Output the assembler code for a thunk function. THUNK_DECL is the | |
365 | declaration for the thunk function itself, FUNCTION is the decl for | |
366 | the target function. DELTA is an immediate constant offset to be | |
367 | added to THIS. If VCALL_OFFSET is nonzero, the word at | |
368 | *(*this + vcall_offset) should be added to THIS. */ | |
369 | DEFHOOK | |
370 | (output_mi_thunk, | |
371 | "", | |
372 | void, (FILE *file, tree thunk_fndecl, HOST_WIDE_INT delta, | |
373 | HOST_WIDE_INT vcall_offset, tree function), | |
374 | NULL) | |
375 | ||
376 | /* Determine whether output_mi_thunk would succeed. */ | |
377 | /* ??? Ideally, this hook would not exist, and success or failure | |
378 | would be returned from output_mi_thunk directly. But there's | |
379 | too much undo-able setup involved in invoking output_mi_thunk. | |
380 | Could be fixed by making output_mi_thunk emit rtl instead of | |
381 | text to the output file. */ | |
382 | DEFHOOK | |
383 | (can_output_mi_thunk, | |
384 | "", | |
385 | bool, (const_tree thunk_fndecl, HOST_WIDE_INT delta, | |
386 | HOST_WIDE_INT vcall_offset, const_tree function), | |
387 | hook_bool_const_tree_hwi_hwi_const_tree_false) | |
388 | ||
389 | /* Output any boilerplate text needed at the beginning of a | |
390 | translation unit. */ | |
391 | DEFHOOK | |
392 | (file_start, | |
393 | "", | |
394 | void, (void), | |
395 | default_file_start) | |
396 | ||
397 | /* Output any boilerplate text needed at the end of a translation unit. */ | |
398 | DEFHOOK | |
399 | (file_end, | |
400 | "", | |
401 | void, (void), | |
402 | hook_void_void) | |
403 | ||
404 | /* Output any boilerplate text needed at the beginning of an | |
405 | LTO output stream. */ | |
406 | DEFHOOK | |
407 | (lto_start, | |
408 | "", | |
409 | void, (void), | |
410 | hook_void_void) | |
411 | ||
412 | /* Output any boilerplate text needed at the end of an | |
413 | LTO output stream. */ | |
414 | DEFHOOK | |
415 | (lto_end, | |
416 | "", | |
417 | void, (void), | |
418 | hook_void_void) | |
419 | ||
420 | /* Output any boilerplace text needed at the end of a | |
421 | translation unit before debug and unwind info is emitted. */ | |
422 | DEFHOOK | |
423 | (code_end, | |
424 | "", | |
425 | void, (void), | |
426 | hook_void_void) | |
427 | ||
428 | /* Output an assembler pseudo-op to declare a library function name | |
429 | external. */ | |
430 | DEFHOOK | |
431 | (external_libcall, | |
432 | "", | |
433 | void, (rtx symref), | |
434 | default_external_libcall) | |
435 | ||
436 | /* Output an assembler directive to mark decl live. This instructs | |
437 | linker to not dead code strip this symbol. */ | |
438 | DEFHOOK | |
439 | (mark_decl_preserved, | |
440 | "", | |
441 | void, (const char *symbol), | |
442 | hook_void_constcharptr) | |
443 | ||
444 | /* Output a record of the command line switches that have been passed. */ | |
445 | DEFHOOK | |
446 | (record_gcc_switches, | |
447 | "", | |
448 | int, (print_switch_type type, const char *text), | |
449 | NULL) | |
450 | ||
451 | /* The name of the section that the example ELF implementation of | |
452 | record_gcc_switches will use to store the information. Target | |
453 | specific versions of record_gcc_switches may or may not use | |
454 | this information. */ | |
455 | DEFHOOKPOD | |
456 | (record_gcc_switches_section, | |
457 | "", | |
458 | const char *, ".GCC.command.line") | |
459 | ||
460 | /* Output the definition of a section anchor. */ | |
461 | DEFHOOK | |
462 | (output_anchor, | |
463 | "", | |
464 | void, (rtx x), | |
465 | default_asm_output_anchor) | |
466 | ||
467 | /* Output a DTP-relative reference to a TLS symbol. */ | |
468 | DEFHOOK | |
469 | (output_dwarf_dtprel, | |
470 | "", | |
471 | void, (FILE *file, int size, rtx x), | |
472 | NULL) | |
473 | ||
474 | /* Some target machines need to postscan each insn after it is output. */ | |
475 | DEFHOOK | |
476 | (final_postscan_insn, | |
477 | "", | |
478 | void, (FILE *file, rtx insn, rtx *opvec, int noperands), | |
479 | NULL) | |
480 | ||
481 | /* Emit the trampoline template. This hook may be NULL. */ | |
482 | DEFHOOK | |
483 | (trampoline_template, | |
484 | "", | |
485 | void, (FILE *f), | |
486 | NULL) | |
487 | ||
e2823fde | 488 | DEFHOOK |
489 | (output_source_filename, | |
490 | "Output COFF information or DWARF debugging information which indicates\ | |
491 | that filename @var{name} is the current source file to the stdio\ | |
492 | stream @var{file}.\n\ | |
493 | \n\ | |
494 | This target hook need not be defined if the standard form of output\ | |
495 | for the file format in use is appropriate.", | |
496 | void ,(FILE *file, const char *name), | |
497 | default_asm_output_source_filename) | |
498 | ||
1282f299 | 499 | DEFHOOK |
500 | (output_addr_const_extra, | |
501 | "", | |
502 | bool, (FILE *file, rtx x), | |
503 | default_asm_output_addr_const_extra) | |
504 | ||
202d6e5f | 505 | /* ??? The TARGET_PRINT_OPERAND* hooks are part of the asm_out struct, |
506 | even though that is not reflected in the macro name to override their | |
507 | initializers. */ | |
508 | #undef HOOK_PREFIX | |
509 | #define HOOK_PREFIX "TARGET_" | |
510 | ||
511 | /* Emit a machine-specific insn operand. */ | |
21cc3986 | 512 | /* ??? tm.texi only documents the old macro PRINT_OPERAND, |
513 | not this hook, and uses a different name for the argument FILE. */ | |
202d6e5f | 514 | DEFHOOK_UNDOC |
515 | (print_operand, | |
516 | "", | |
517 | void, (FILE *file, rtx x, int code), | |
518 | default_print_operand) | |
519 | ||
520 | /* Emit a machine-specific memory address. */ | |
21cc3986 | 521 | /* ??? tm.texi only documents the old macro PRINT_OPERAND_ADDRESS, |
522 | not this hook, and uses different argument names. */ | |
202d6e5f | 523 | DEFHOOK_UNDOC |
524 | (print_operand_address, | |
525 | "", | |
526 | void, (FILE *file, rtx addr), | |
527 | default_print_operand_address) | |
528 | ||
529 | /* Determine whether CODE is a valid punctuation character for the | |
530 | `print_operand' hook. */ | |
21cc3986 | 531 | /* ??? tm.texi only documents the old macro PRINT_OPERAND_PUNCT_VALID_P, |
532 | not this hook. */ | |
202d6e5f | 533 | DEFHOOK_UNDOC |
534 | (print_operand_punct_valid_p, | |
535 | "", | |
536 | bool ,(unsigned char code), | |
537 | default_print_operand_punct_valid_p) | |
538 | ||
d86d364d | 539 | /* Given a symbol name, perform same mangling as assemble_name and |
540 | ASM_OUTPUT_LABELREF, returning result as an IDENTIFIER_NODE. */ | |
541 | DEFHOOK | |
542 | (mangle_assembler_name, | |
543 | "Given a symbol @var{name}, perform same mangling as @code{varasm.c}'s\ | |
544 | @code{assemble_name}, but in memory rather than to a file stream, returning\ | |
545 | result as an @code{IDENTIFIER_NODE}. Required for correct LTO symtabs. The\ | |
546 | default implementation calls the @code{TARGET_STRIP_NAME_ENCODING} hook and\ | |
547 | then prepends the @code{USER_LABEL_PREFIX}, if any.", | |
548 | tree, (const char *name), | |
549 | default_mangle_assembler_name) | |
550 | ||
202d6e5f | 551 | HOOK_VECTOR_END (asm_out) |
552 | ||
553 | /* Functions relating to instruction scheduling. All of these | |
554 | default to null pointers, which haifa-sched.c looks for and handles. */ | |
555 | #undef HOOK_PREFIX | |
556 | #define HOOK_PREFIX "TARGET_SCHED_" | |
557 | HOOK_VECTOR (TARGET_SCHED, sched) | |
558 | ||
559 | /* Given the current cost, COST, of an insn, INSN, calculate and | |
560 | return a new cost based on its relationship to DEP_INSN through | |
561 | the dependence LINK. The default is to make no adjustment. */ | |
562 | DEFHOOK | |
563 | (adjust_cost, | |
564 | "", | |
565 | int, (rtx insn, rtx link, rtx dep_insn, int cost), NULL) | |
566 | ||
567 | /* Adjust the priority of an insn as you see fit. Returns the new priority. */ | |
568 | DEFHOOK | |
569 | (adjust_priority, | |
570 | "", | |
571 | int, (rtx insn, int priority), NULL) | |
572 | ||
573 | /* Function which returns the maximum number of insns that can be | |
574 | scheduled in the same machine cycle. This must be constant | |
575 | over an entire compilation. The default is 1. */ | |
576 | DEFHOOK | |
577 | (issue_rate, | |
578 | "", | |
579 | int, (void), NULL) | |
580 | ||
581 | /* Calculate how much this insn affects how many more insns we | |
582 | can emit this cycle. Default is they all cost the same. */ | |
583 | DEFHOOK | |
584 | (variable_issue, | |
585 | "", | |
586 | int, (FILE *file, int verbose, rtx insn, int more), NULL) | |
587 | ||
588 | /* Initialize machine-dependent scheduling code. */ | |
589 | DEFHOOK | |
590 | (init, | |
591 | "", | |
592 | void, (FILE *file, int verbose, int max_ready), NULL) | |
593 | ||
594 | /* Finalize machine-dependent scheduling code. */ | |
595 | DEFHOOK | |
596 | (finish, | |
597 | "", | |
598 | void, (FILE *file, int verbose), NULL) | |
599 | ||
600 | /* Initialize machine-dependent function wide scheduling code. */ | |
601 | DEFHOOK | |
602 | (init_global, | |
603 | "", | |
604 | void, (FILE *file, int verbose, int old_max_uid), NULL) | |
605 | ||
606 | /* Finalize machine-dependent function wide scheduling code. */ | |
607 | DEFHOOK | |
608 | (finish_global, | |
609 | "", | |
610 | void, (FILE *file, int verbose), NULL) | |
611 | ||
612 | /* Reorder insns in a machine-dependent fashion, in two different | |
613 | places. Default does nothing. */ | |
614 | DEFHOOK | |
615 | (reorder, | |
616 | "", | |
617 | int, (FILE *file, int verbose, rtx *ready, int *n_readyp, int clock), NULL) | |
618 | ||
619 | DEFHOOK | |
620 | (reorder2, | |
621 | "", | |
622 | int, (FILE *file, int verbose, rtx *ready, int *n_readyp, int clock), NULL) | |
623 | ||
624 | /* The following member value is a pointer to a function called | |
625 | after evaluation forward dependencies of insns in chain given | |
626 | by two parameter values (head and tail correspondingly). */ | |
627 | DEFHOOK | |
628 | (dependencies_evaluation_hook, | |
629 | "", | |
630 | void, (rtx head, rtx tail), NULL) | |
631 | ||
632 | /* The values of the following four members are pointers to functions | |
633 | used to simplify the automaton descriptions. dfa_pre_cycle_insn and | |
634 | dfa_post_cycle_insn give functions returning insns which are used to | |
635 | change the pipeline hazard recognizer state when the new simulated | |
636 | processor cycle correspondingly starts and finishes. The function | |
637 | defined by init_dfa_pre_cycle_insn and init_dfa_post_cycle_insn are | |
638 | used to initialize the corresponding insns. The default values of | |
639 | the members result in not changing the automaton state when the | |
640 | new simulated processor cycle correspondingly starts and finishes. */ | |
641 | ||
642 | DEFHOOK | |
643 | (init_dfa_pre_cycle_insn, | |
644 | "", | |
645 | void, (void), NULL) | |
646 | ||
647 | DEFHOOK | |
648 | (dfa_pre_cycle_insn, | |
649 | "", | |
650 | rtx, (void), NULL) | |
651 | ||
652 | DEFHOOK | |
653 | (init_dfa_post_cycle_insn, | |
654 | "", | |
655 | void, (void), NULL) | |
656 | ||
657 | DEFHOOK | |
658 | (dfa_post_cycle_insn, | |
659 | "", | |
660 | rtx, (void), NULL) | |
661 | ||
662 | /* The values of the following two members are pointers to | |
663 | functions used to simplify the automaton descriptions. | |
664 | dfa_pre_advance_cycle and dfa_post_advance_cycle are getting called | |
665 | immediately before and after cycle is advanced. */ | |
666 | ||
667 | DEFHOOK | |
668 | (dfa_pre_advance_cycle, | |
669 | "", | |
670 | void, (void), NULL) | |
671 | ||
672 | DEFHOOK | |
673 | (dfa_post_advance_cycle, | |
674 | "", | |
675 | void, (void), NULL) | |
676 | ||
677 | /* The following member value is a pointer to a function returning value | |
678 | which defines how many insns in queue `ready' will we try for | |
679 | multi-pass scheduling. If the member value is nonzero and the | |
680 | function returns positive value, the DFA based scheduler will make | |
681 | multi-pass scheduling for the first cycle. In other words, we will | |
682 | try to choose ready insn which permits to start maximum number of | |
683 | insns on the same cycle. */ | |
684 | DEFHOOK | |
685 | (first_cycle_multipass_dfa_lookahead, | |
686 | "", | |
687 | int, (void), NULL) | |
688 | ||
689 | /* The following member value is pointer to a function controlling | |
690 | what insns from the ready insn queue will be considered for the | |
691 | multipass insn scheduling. If the hook returns zero for insn | |
692 | passed as the parameter, the insn will be not chosen to be issued. */ | |
693 | DEFHOOK | |
694 | (first_cycle_multipass_dfa_lookahead_guard, | |
695 | "", | |
696 | int, (rtx insn), NULL) | |
697 | ||
44ad1e56 | 698 | /* This hook prepares the target for a new round of multipass |
699 | scheduling. | |
700 | DATA is a pointer to target-specific data used for multipass scheduling. | |
701 | READY_TRY and N_READY represent the current state of search in the | |
702 | optimization space. The target can filter out instructions that | |
703 | should not be tried during current round by setting corresponding | |
704 | elements in READY_TRY to non-zero. | |
705 | FIRST_CYCLE_INSN_P is true if this is the first round of multipass | |
706 | scheduling on current cycle. */ | |
707 | DEFHOOK | |
708 | (first_cycle_multipass_begin, | |
709 | "", | |
710 | void, (void *data, char *ready_try, int n_ready, bool first_cycle_insn_p), | |
711 | NULL) | |
712 | ||
713 | /* This hook is called when multipass scheduling evaluates instruction INSN. | |
714 | DATA is a pointer to target-specific data that can be used to record effects | |
715 | of INSN on CPU that are not described in DFA. | |
716 | READY_TRY and N_READY represent the current state of search in the | |
717 | optimization space. The target can filter out instructions that | |
718 | should not be tried after issueing INSN by setting corresponding | |
719 | elements in READY_TRY to non-zero. | |
720 | INSN is the instruction being evaluated. | |
721 | PREV_DATA is a pointer to target-specific data corresponding | |
722 | to a state before issueing INSN. */ | |
723 | DEFHOOK | |
724 | (first_cycle_multipass_issue, | |
725 | "", | |
726 | void, (void *data, char *ready_try, int n_ready, rtx insn, | |
727 | const void *prev_data), NULL) | |
728 | ||
729 | /* This hook is called when multipass scheduling backtracks from evaluation of | |
730 | instruction corresponding to DATA. | |
731 | DATA is a pointer to target-specific data that stores the effects | |
732 | of instruction from which the algorithm backtracks on CPU that are not | |
733 | described in DFA. | |
734 | READY_TRY and N_READY represent the current state of search in the | |
735 | optimization space. The target can filter out instructions that | |
736 | should not be tried after issueing INSN by setting corresponding | |
737 | elements in READY_TRY to non-zero. */ | |
738 | DEFHOOK | |
739 | (first_cycle_multipass_backtrack, | |
740 | "", | |
741 | void, (const void *data, char *ready_try, int n_ready), NULL) | |
742 | ||
743 | /* This hook notifies the target about the result of the concluded current | |
744 | round of multipass scheduling. | |
745 | DATA is a pointer. | |
746 | If DATA is non-NULL it points to target-specific data used for multipass | |
747 | scheduling which corresponds to instruction at the start of the chain of | |
748 | the winning solution. DATA is NULL when multipass scheduling cannot find | |
749 | a good enough solution on current cycle and decides to retry later, | |
750 | usually after advancing the cycle count. */ | |
751 | DEFHOOK | |
752 | (first_cycle_multipass_end, | |
753 | "", | |
754 | void, (const void *data), NULL) | |
755 | ||
756 | /* This hook is called to initialize target-specific data for multipass | |
757 | scheduling after it has been allocated. | |
758 | DATA is a pointer to target-specific data that stores the effects | |
759 | of instruction from which the algorithm backtracks on CPU that are not | |
760 | described in DFA. */ | |
761 | DEFHOOK | |
762 | (first_cycle_multipass_init, | |
763 | "", | |
764 | void, (void *data), NULL) | |
765 | ||
766 | /* This hook is called to finalize target-specific data for multipass | |
767 | scheduling before it is deallocated. | |
768 | DATA is a pointer to target-specific data that stores the effects | |
769 | of instruction from which the algorithm backtracks on CPU that are not | |
770 | described in DFA. */ | |
771 | DEFHOOK | |
772 | (first_cycle_multipass_fini, | |
773 | "", | |
774 | void, (void *data), NULL) | |
775 | ||
202d6e5f | 776 | /* The following member value is pointer to a function called by |
777 | the insn scheduler before issuing insn passed as the third | |
778 | parameter on given cycle. If the hook returns nonzero, the | |
779 | insn is not issued on given processors cycle. Instead of that, | |
780 | the processor cycle is advanced. If the value passed through | |
781 | the last parameter is zero, the insn ready queue is not sorted | |
782 | on the new cycle start as usually. The first parameter passes | |
783 | file for debugging output. The second one passes the scheduler | |
784 | verbose level of the debugging output. The forth and the fifth | |
785 | parameter values are correspondingly processor cycle on which | |
786 | the previous insn has been issued and the current processor cycle. */ | |
ec1842d2 | 787 | DEFHOOK |
202d6e5f | 788 | (dfa_new_cycle, |
789 | "", | |
ec1842d2 | 790 | int, (FILE *dump, int verbose, rtx insn, int last_clock, |
791 | int clock, int *sort_p), | |
202d6e5f | 792 | NULL) |
793 | ||
794 | /* The following member value is a pointer to a function called by the | |
795 | insn scheduler. It should return true if there exists a dependence | |
796 | which is considered costly by the target, between the insn | |
797 | DEP_PRO (&_DEP), and the insn DEP_CON (&_DEP). The first parameter is | |
798 | the dep that represents the dependence between the two insns. The | |
799 | second argument is the cost of the dependence as estimated by | |
800 | the scheduler. The last argument is the distance in cycles | |
801 | between the already scheduled insn (first parameter) and the | |
802 | second insn (second parameter). */ | |
803 | DEFHOOK | |
804 | (is_costly_dependence, | |
805 | "", | |
806 | bool, (struct _dep *_dep, int cost, int distance), NULL) | |
807 | ||
808 | DEFHOOK_UNDOC | |
809 | (adjust_cost_2, | |
810 | "Given the current cost, @var{cost}, of an insn, @var{insn}, calculate and\ | |
811 | return a new cost based on its relationship to @var{dep_insn} through the\ | |
812 | dependence of weakness @var{dw}. The default is to make no adjustment.", | |
813 | int, (rtx insn, int dep_type1, rtx dep_insn, int cost, int dw), NULL) | |
814 | ||
815 | /* The following member value is a pointer to a function called | |
816 | by the insn scheduler. This hook is called to notify the backend | |
817 | that new instructions were emitted. */ | |
818 | DEFHOOK | |
819 | (h_i_d_extended, | |
820 | "", | |
821 | void, (void), NULL) | |
822 | ||
823 | /* Next 5 functions are for multi-point scheduling. */ | |
824 | ||
825 | /* Allocate memory for scheduler context. */ | |
826 | DEFHOOK | |
827 | (alloc_sched_context, | |
828 | "", | |
829 | void *, (void), NULL) | |
830 | ||
831 | /* Fills the context from the local machine scheduler context. */ | |
832 | DEFHOOK | |
833 | (init_sched_context, | |
834 | "", | |
835 | void, (void *tc, bool clean_p), NULL) | |
836 | ||
837 | /* Sets local machine scheduler context to a saved value. */ | |
838 | DEFHOOK | |
839 | (set_sched_context, | |
840 | "", | |
841 | void, (void *tc), NULL) | |
842 | ||
843 | /* Clears a scheduler context so it becomes like after init. */ | |
844 | DEFHOOK | |
845 | (clear_sched_context, | |
846 | "", | |
847 | void, (void *tc), NULL) | |
848 | ||
849 | /* Frees the scheduler context. */ | |
850 | DEFHOOK | |
851 | (free_sched_context, | |
852 | "", | |
853 | void, (void *tc), NULL) | |
854 | ||
855 | /* The following member value is a pointer to a function called | |
856 | by the insn scheduler. | |
857 | The first parameter is an instruction, the second parameter is the type | |
858 | of the requested speculation, and the third parameter is a pointer to the | |
859 | speculative pattern of the corresponding type (set if return value == 1). | |
860 | It should return | |
861 | -1, if there is no pattern, that will satisfy the requested speculation type, | |
862 | 0, if current pattern satisfies the requested speculation type, | |
863 | 1, if pattern of the instruction should be changed to the newly | |
864 | generated one. */ | |
865 | DEFHOOK | |
866 | (speculate_insn, | |
867 | "", | |
868 | int, (rtx insn, int request, rtx *new_pat), NULL) | |
869 | ||
870 | /* The following member value is a pointer to a function called | |
871 | by the insn scheduler. It should return true if the check instruction | |
872 | passed as the parameter needs a recovery block. */ | |
873 | DEFHOOK | |
874 | (needs_block_p, | |
875 | "", | |
876 | bool, (int dep_status), NULL) | |
877 | ||
878 | /* The following member value is a pointer to a function called | |
879 | by the insn scheduler. It should return a pattern for the check | |
880 | instruction. | |
881 | The first parameter is a speculative instruction, the second parameter | |
882 | is the label of the corresponding recovery block (or null, if it is a | |
883 | simple check). If the mutation of the check is requested (e.g. from | |
884 | ld.c to chk.a), the third parameter is true - in this case the first | |
885 | parameter is the previous check. */ | |
886 | DEFHOOK | |
887 | (gen_spec_check, | |
888 | "", | |
889 | rtx, (rtx insn, rtx label, int mutate_p), NULL) | |
890 | ||
891 | /* The following member value is a pointer to a function controlling | |
892 | what insns from the ready insn queue will be considered for the | |
893 | multipass insn scheduling. If the hook returns zero for the insn | |
894 | passed as the parameter, the insn will not be chosen to be | |
895 | issued. This hook is used to discard speculative instructions, | |
896 | that stand at the first position of the ready list. */ | |
897 | DEFHOOK | |
898 | (first_cycle_multipass_dfa_lookahead_guard_spec, | |
899 | "", | |
900 | bool, (const_rtx insn), NULL) | |
901 | ||
902 | /* The following member value is a pointer to a function that provides | |
903 | information about the speculation capabilities of the target. | |
904 | The parameter is a pointer to spec_info variable. */ | |
905 | DEFHOOK | |
906 | (set_sched_flags, | |
907 | "", | |
908 | void, (struct spec_info_def *spec_info), NULL) | |
909 | ||
910 | DEFHOOK_UNDOC | |
911 | (get_insn_spec_ds, | |
912 | "Return speculation types of instruction @var{insn}.", | |
913 | int, (rtx insn), NULL) | |
914 | ||
915 | DEFHOOK_UNDOC | |
916 | (get_insn_checked_ds, | |
917 | "Return speculation types that are checked for instruction @var{insn}", | |
918 | int, (rtx insn), NULL) | |
919 | ||
920 | DEFHOOK_UNDOC | |
921 | (skip_rtx_p, | |
922 | "Return bool if rtx scanning should just skip current layer and\ | |
923 | advance to the inner rtxes.", | |
924 | bool, (const_rtx x), NULL) | |
925 | ||
926 | /* The following member value is a pointer to a function that provides | |
927 | information about the target resource-based lower bound which is | |
928 | used by the swing modulo scheduler. The parameter is a pointer | |
929 | to ddg variable. */ | |
930 | DEFHOOK | |
931 | (sms_res_mii, | |
932 | "", | |
933 | int, (struct ddg *g), NULL) | |
934 | ||
0ac9454e | 935 | /* The following member value is a function that initializes dispatch |
936 | schedling and adds instructions to dispatch window according to its | |
937 | parameters. */ | |
938 | DEFHOOK | |
939 | (dispatch_do, | |
940 | "", | |
941 | void, (rtx insn, int x), | |
942 | hook_void_rtx_int) | |
943 | ||
944 | /* The following member value is a a function that returns true is | |
945 | dispatch schedling is supported in hardware and condition passed | |
946 | as the second parameter is true. */ | |
947 | DEFHOOK | |
948 | (dispatch, | |
949 | "", | |
950 | bool, (rtx insn, int x), | |
951 | hook_bool_rtx_int_false) | |
952 | ||
202d6e5f | 953 | HOOK_VECTOR_END (sched) |
954 | ||
955 | /* Functions relating to vectorization. */ | |
956 | #undef HOOK_PREFIX | |
957 | #define HOOK_PREFIX "TARGET_VECTORIZE_" | |
958 | HOOK_VECTOR (TARGET_VECTORIZE, vectorize) | |
959 | ||
960 | /* The following member value is a pointer to a function called | |
961 | by the vectorizer, and return the decl of the target builtin | |
962 | function. */ | |
963 | DEFHOOK | |
964 | (builtin_mask_for_load, | |
965 | "", | |
966 | tree, (void), NULL) | |
967 | ||
968 | /* Returns a code for builtin that realizes vectorized version of | |
969 | function, or NULL_TREE if not available. */ | |
970 | DEFHOOK | |
971 | (builtin_vectorized_function, | |
972 | "", | |
973 | tree, (tree fndecl, tree vec_type_out, tree vec_type_in), | |
974 | default_builtin_vectorized_function) | |
975 | ||
976 | /* Returns a function declaration for a builtin that realizes the | |
977 | vector conversion, or NULL_TREE if not available. */ | |
978 | DEFHOOK | |
979 | (builtin_conversion, | |
980 | "", | |
981 | tree, (unsigned code, tree dest_type, tree src_type), | |
982 | default_builtin_vectorized_conversion) | |
983 | ||
984 | /* Target builtin that implements vector widening multiplication. | |
985 | builtin_mul_widen_eve computes the element-by-element products | |
986 | for the even elements, and builtin_mul_widen_odd computes the | |
987 | element-by-element products for the odd elements. */ | |
988 | DEFHOOK | |
989 | (builtin_mul_widen_even, | |
990 | "", | |
991 | tree, (tree x), NULL) | |
992 | ||
993 | DEFHOOK | |
994 | (builtin_mul_widen_odd, | |
995 | "", | |
996 | tree, (tree x), NULL) | |
997 | ||
0822b158 | 998 | /* Cost of different vector/scalar statements in vectorization cost |
999 | model. In case of misaligned vector loads and stores the cost depends | |
1000 | on the data type and misalignment value. */ | |
202d6e5f | 1001 | DEFHOOK |
1002 | (builtin_vectorization_cost, | |
1003 | "", | |
0822b158 | 1004 | int, (enum vect_cost_for_stmt type_of_cost, tree vectype, int misalign), |
202d6e5f | 1005 | default_builtin_vectorization_cost) |
1006 | ||
1007 | /* Return true if vector alignment is reachable (by peeling N | |
1008 | iterations) for the given type. */ | |
1009 | DEFHOOK | |
1010 | (vector_alignment_reachable, | |
1011 | "", | |
1012 | bool, (const_tree type, bool is_packed), | |
1013 | default_builtin_vector_alignment_reachable) | |
1014 | ||
1015 | /* Target builtin that implements vector permute. */ | |
1016 | DEFHOOK | |
1017 | (builtin_vec_perm, | |
1018 | "", | |
1019 | tree, (tree type, tree *mask_element_type), NULL) | |
1020 | ||
1021 | /* Return true if a vector created for builtin_vec_perm is valid. */ | |
1022 | DEFHOOK | |
1023 | (builtin_vec_perm_ok, | |
1024 | "", | |
1025 | bool, (tree vec_type, tree mask), | |
1026 | hook_bool_tree_tree_true) | |
1027 | ||
1028 | /* Return true if the target supports misaligned store/load of a | |
1029 | specific factor denoted in the third parameter. The last parameter | |
1030 | is true if the access is defined in a packed struct. */ | |
1031 | DEFHOOK | |
1032 | (support_vector_misalignment, | |
1033 | "", | |
1034 | bool, | |
1035 | (enum machine_mode mode, const_tree type, int misalignment, bool is_packed), | |
1036 | default_builtin_support_vector_misalignment) | |
1037 | ||
b24d851f | 1038 | /* Returns the preferred mode for SIMD operations for the specified |
1039 | scalar mode. */ | |
2101edf2 | 1040 | DEFHOOK |
b24d851f | 1041 | (preferred_simd_mode, |
2101edf2 | 1042 | "", |
b24d851f | 1043 | enum machine_mode, |
2101edf2 | 1044 | (enum machine_mode mode), |
b24d851f | 1045 | default_preferred_simd_mode) |
2101edf2 | 1046 | |
421b11b1 | 1047 | /* Returns a mask of vector sizes to iterate over when auto-vectorizing |
1048 | after processing the preferred one derived from preferred_simd_mode. */ | |
1049 | DEFHOOK | |
1050 | (autovectorize_vector_sizes, | |
1051 | "", | |
1052 | unsigned int, | |
1053 | (void), | |
1054 | default_autovectorize_vector_sizes) | |
1055 | ||
202d6e5f | 1056 | HOOK_VECTOR_END (vectorize) |
1057 | ||
1058 | #undef HOOK_PREFIX | |
1059 | #define HOOK_PREFIX "TARGET_" | |
1060 | ||
1061 | /* The initial value of target_flags. */ | |
1062 | DEFHOOKPOD | |
1063 | (default_target_flags, | |
1064 | "", | |
1065 | int, 0) | |
1066 | ||
1067 | /* Allow target specific overriding of option settings after options have | |
1068 | been changed by an attribute or pragma or when it is reset at the | |
1069 | end of the code affected by an attribute or pragma. */ | |
1070 | DEFHOOK | |
1071 | (override_options_after_change, | |
1072 | "", | |
1073 | void, (void), | |
1074 | hook_void_void) | |
1075 | ||
fba5dd52 | 1076 | /* Handle target switch DECODED for options structures OPTS and |
1077 | OPTS_SET, at location LOC. Return true if the switch was valid. */ | |
202d6e5f | 1078 | DEFHOOK |
1079 | (handle_option, | |
1080 | "", | |
fba5dd52 | 1081 | bool, (struct gcc_options *opts, struct gcc_options *opts_set, |
1082 | const struct cl_decoded_option *decoded, | |
1083 | unsigned int /*location_t*/ loc), | |
1084 | default_target_handle_option) | |
202d6e5f | 1085 | |
202d6e5f | 1086 | /* Display extra, target specific information in response to a |
1087 | --target-help switch. */ | |
1088 | DEFHOOK | |
1089 | (help, | |
1090 | "", | |
1091 | void, (void), NULL) | |
1092 | ||
1093 | DEFHOOK_UNDOC | |
1094 | (eh_return_filter_mode, | |
1095 | "Return machine mode for filter value.", | |
1096 | enum machine_mode, (void), | |
1097 | default_eh_return_filter_mode) | |
1098 | ||
1099 | /* Return machine mode for libgcc expanded cmp instructions. */ | |
1100 | DEFHOOK | |
1101 | (libgcc_cmp_return_mode, | |
1102 | "", | |
1103 | enum machine_mode, (void), | |
1104 | default_libgcc_cmp_return_mode) | |
1105 | ||
1106 | /* Return machine mode for libgcc expanded shift instructions. */ | |
1107 | DEFHOOK | |
1108 | (libgcc_shift_count_mode, | |
1109 | "", | |
1110 | enum machine_mode, (void), | |
1111 | default_libgcc_shift_count_mode) | |
1112 | ||
1113 | /* Return machine mode to be used for _Unwind_Word type. */ | |
1114 | DEFHOOK | |
1115 | (unwind_word_mode, | |
1116 | "", | |
1117 | enum machine_mode, (void), | |
1118 | default_unwind_word_mode) | |
1119 | ||
1120 | /* Given two decls, merge their attributes and return the result. */ | |
1121 | DEFHOOK | |
1122 | (merge_decl_attributes, | |
1123 | "", | |
1124 | tree, (tree olddecl, tree newdecl), | |
1125 | merge_decl_attributes) | |
1126 | ||
1127 | /* Given two types, merge their attributes and return the result. */ | |
1128 | DEFHOOK | |
1129 | (merge_type_attributes, | |
1130 | "", | |
1131 | tree, (tree type1, tree type2), | |
1132 | merge_type_attributes) | |
1133 | ||
1134 | /* Table of machine attributes and functions to handle them. | |
1135 | Ignored if NULL. */ | |
1136 | DEFHOOKPOD | |
1137 | (attribute_table, | |
1138 | "", | |
1139 | const struct attribute_spec *, NULL) | |
1140 | ||
1141 | /* Return true iff attribute NAME expects a plain identifier as its first | |
1142 | argument. */ | |
1143 | DEFHOOK | |
1144 | (attribute_takes_identifier_p, | |
1145 | "", | |
1146 | bool, (const_tree name), | |
1147 | hook_bool_const_tree_false) | |
1148 | ||
1149 | /* Return zero if the attributes on TYPE1 and TYPE2 are incompatible, | |
1150 | one if they are compatible and two if they are nearly compatible | |
1151 | (which causes a warning to be generated). */ | |
1152 | DEFHOOK | |
1153 | (comp_type_attributes, | |
1154 | "", | |
1155 | int, (const_tree type1, const_tree type2), | |
1156 | hook_int_const_tree_const_tree_1) | |
1157 | ||
1158 | /* Assign default attributes to the newly defined TYPE. */ | |
1159 | DEFHOOK | |
1160 | (set_default_type_attributes, | |
1161 | "", | |
1162 | void, (tree type), | |
1163 | hook_void_tree) | |
1164 | ||
1165 | /* Insert attributes on the newly created DECL. */ | |
1166 | DEFHOOK | |
1167 | (insert_attributes, | |
1168 | "", | |
1169 | void, (tree node, tree *attr_ptr), | |
1170 | hook_void_tree_treeptr) | |
1171 | ||
1172 | /* Return true if FNDECL (which has at least one machine attribute) | |
1173 | can be inlined despite its machine attributes, false otherwise. */ | |
1174 | DEFHOOK | |
1175 | (function_attribute_inlinable_p, | |
1176 | "", | |
1177 | bool, (const_tree fndecl), | |
1178 | hook_bool_const_tree_false) | |
1179 | ||
1180 | /* Return true if bitfields in RECORD_TYPE should follow the | |
1181 | Microsoft Visual C++ bitfield layout rules. */ | |
1182 | DEFHOOK | |
1183 | (ms_bitfield_layout_p, | |
1184 | "", | |
1185 | bool, (const_tree record_type), | |
1186 | hook_bool_const_tree_false) | |
1187 | ||
183dc110 | 1188 | /* For now this is only an interface to WORDS_BIG_ENDIAN for |
1189 | target-independent code like the front ends, need performance testing | |
1190 | before switching completely to the target hook. */ | |
1191 | DEFHOOK_UNDOC | |
1192 | (words_big_endian, | |
1193 | "", | |
1194 | bool, (void), | |
1195 | targhook_words_big_endian) | |
1196 | ||
1197 | /* Likewise for FLOAT_WORDS_BIG_ENDIAN. */ | |
1198 | DEFHOOK_UNDOC | |
1199 | (float_words_big_endian, | |
1200 | "", | |
1201 | bool, (void), | |
1202 | targhook_float_words_big_endian) | |
1203 | ||
202d6e5f | 1204 | /* True if the target supports decimal floating point. */ |
1205 | DEFHOOK | |
1206 | (decimal_float_supported_p, | |
1207 | "", | |
1208 | bool, (void), | |
1209 | default_decimal_float_supported_p) | |
1210 | ||
1211 | /* True if the target supports fixed-point. */ | |
1212 | DEFHOOK | |
1213 | (fixed_point_supported_p, | |
1214 | "", | |
1215 | bool, (void), | |
1216 | default_fixed_point_supported_p) | |
1217 | ||
1218 | /* Return true if anonymous bitfields affect structure alignment. */ | |
1219 | DEFHOOK | |
1220 | (align_anon_bitfield, | |
1221 | "", | |
1222 | bool, (void), | |
1223 | hook_bool_void_false) | |
1224 | ||
1225 | /* Return true if volatile bitfields should use the narrowest type possible. | |
1226 | Return false if they should use the container type. */ | |
1227 | DEFHOOK | |
1228 | (narrow_volatile_bitfield, | |
1229 | "", | |
1230 | bool, (void), | |
1231 | hook_bool_void_false) | |
1232 | ||
1233 | /* Set up target-specific built-in functions. */ | |
1234 | DEFHOOK | |
1235 | (init_builtins, | |
1236 | "", | |
1237 | void, (void), | |
1238 | hook_void_void) | |
1239 | ||
1240 | /* Initialize (if INITIALIZE_P is true) and return the target-specific | |
1241 | built-in function decl for CODE. | |
1242 | Return NULL if that is not possible. Return error_mark_node if CODE | |
1243 | is outside of the range of valid target builtin function codes. */ | |
1244 | DEFHOOK | |
1245 | (builtin_decl, | |
1246 | "", | |
1247 | tree, (unsigned code, bool initialize_p), NULL) | |
1248 | ||
1249 | /* Expand a target-specific builtin. */ | |
1250 | DEFHOOK | |
1251 | (expand_builtin, | |
1252 | "", | |
1253 | rtx, | |
1254 | (tree exp, rtx target, rtx subtarget, enum machine_mode mode, int ignore), | |
1255 | default_expand_builtin) | |
1256 | ||
1257 | /* Select a replacement for a target-specific builtin. This is done | |
1258 | *before* regular type checking, and so allows the target to | |
1259 | implement a crude form of function overloading. The result is a | |
1260 | complete expression that implements the operation. PARAMS really | |
1261 | has type VEC(tree,gc)*, but we don't want to include tree.h here. */ | |
00a1fec8 | 1262 | DEFHOOK |
202d6e5f | 1263 | (resolve_overloaded_builtin, |
1264 | "", | |
00a1fec8 | 1265 | tree, (unsigned int /*location_t*/ loc, tree fndecl, void *arglist), NULL) |
202d6e5f | 1266 | |
1267 | /* Fold a target-specific builtin. */ | |
bf084459 | 1268 | DEFHOOK |
202d6e5f | 1269 | (fold_builtin, |
1270 | "", | |
bf084459 | 1271 | tree, (tree fndecl, int n_args, tree *argp, bool ignore), |
202d6e5f | 1272 | hook_tree_tree_int_treep_bool_null) |
1273 | ||
1274 | /* Returns a code for a target-specific builtin that implements | |
1275 | reciprocal of the function, or NULL_TREE if not available. */ | |
707e3139 | 1276 | DEFHOOK |
202d6e5f | 1277 | (builtin_reciprocal, |
1278 | "", | |
707e3139 | 1279 | tree, (unsigned fn, bool md_fn, bool sqrt), |
202d6e5f | 1280 | default_builtin_reciprocal) |
1281 | ||
1282 | /* For a vendor-specific TYPE, return a pointer to a statically-allocated | |
1283 | string containing the C++ mangling for TYPE. In all other cases, return | |
1284 | NULL. */ | |
1285 | DEFHOOK | |
1286 | (mangle_type, | |
1287 | "", | |
1288 | const char *, (const_tree type), | |
1289 | hook_constcharptr_const_tree_null) | |
1290 | ||
1291 | /* Make any adjustments to libfunc names needed for this target. */ | |
1292 | DEFHOOK | |
1293 | (init_libfuncs, | |
1294 | "", | |
1295 | void, (void), | |
1296 | hook_void_void) | |
1297 | ||
1298 | /* Given a decl, a section name, and whether the decl initializer | |
1299 | has relocs, choose attributes for the section. */ | |
1300 | /* ??? Should be merged with SELECT_SECTION and UNIQUE_SECTION. */ | |
1301 | DEFHOOK | |
1302 | (section_type_flags, | |
1303 | "", | |
1304 | unsigned int, (tree decl, const char *name, int reloc), | |
1305 | default_section_type_flags) | |
1306 | ||
1307 | /* True if new jumps cannot be created, to replace existing ones or | |
1308 | not, at the current point in the compilation. */ | |
1309 | DEFHOOK | |
1310 | (cannot_modify_jumps_p, | |
1311 | "", | |
1312 | bool, (void), | |
1313 | hook_bool_void_false) | |
1314 | ||
1315 | /* Return a register class for which branch target register | |
1316 | optimizations should be applied. */ | |
1317 | DEFHOOK | |
1318 | (branch_target_register_class, | |
1319 | "", | |
964229b7 | 1320 | reg_class_t, (void), |
202d6e5f | 1321 | default_branch_target_register_class) |
1322 | ||
1323 | /* Return true if branch target register optimizations should include | |
1324 | callee-saved registers that are not already live during the current | |
1325 | function. AFTER_PE_GEN is true if prologues and epilogues have | |
1326 | already been generated. */ | |
1327 | DEFHOOK | |
1328 | (branch_target_register_callee_saved, | |
1329 | "", | |
1330 | bool, (bool after_prologue_epilogue_gen), | |
1331 | hook_bool_bool_false) | |
1332 | ||
1333 | /* Return true if the target supports conditional execution. */ | |
1334 | DEFHOOK | |
1335 | (have_conditional_execution, | |
1336 | "", | |
1337 | bool, (void), | |
1338 | default_have_conditional_execution) | |
1339 | ||
1340 | /* Return a new value for loop unroll size. */ | |
1341 | DEFHOOK | |
1342 | (loop_unroll_adjust, | |
1343 | "", | |
1344 | unsigned, (unsigned nunroll, struct loop *loop), | |
1345 | NULL) | |
1346 | ||
1347 | /* True if the constant X cannot be placed in the constant pool. */ | |
1348 | DEFHOOK | |
1349 | (cannot_force_const_mem, | |
1350 | "", | |
1351 | bool, (rtx x), | |
1352 | hook_bool_rtx_false) | |
1353 | ||
1354 | DEFHOOK_UNDOC | |
1355 | (cannot_copy_insn_p, | |
1356 | "True if the insn @var{x} cannot be duplicated.", | |
1357 | bool, (rtx), NULL) | |
1358 | ||
1359 | /* True if X is considered to be commutative. */ | |
1360 | DEFHOOK | |
1361 | (commutative_p, | |
1362 | "", | |
1363 | bool, (const_rtx x, int outer_code), | |
1364 | hook_bool_const_rtx_commutative_p) | |
1365 | ||
1366 | /* True if ADDR is an address-expression whose effect depends | |
1367 | on the mode of the memory reference it is used in. */ | |
1368 | DEFHOOK | |
1369 | (mode_dependent_address_p, | |
1370 | "", | |
1371 | bool, (const_rtx addr), | |
1372 | default_mode_dependent_address_p) | |
1373 | ||
1374 | /* Given an invalid address X for a given machine mode, try machine-specific | |
1375 | ways to make it legitimate. Return X or an invalid address on failure. */ | |
1376 | DEFHOOK | |
1377 | (legitimize_address, | |
1378 | "", | |
1379 | rtx, (rtx x, rtx oldx, enum machine_mode mode), | |
1380 | default_legitimize_address) | |
1381 | ||
1382 | /* Given an address RTX, undo the effects of LEGITIMIZE_ADDRESS. */ | |
1383 | DEFHOOK | |
1384 | (delegitimize_address, | |
1385 | "", | |
1386 | rtx, (rtx x), | |
1387 | delegitimize_mem_from_attrs) | |
1388 | ||
1389 | /* Given an address RTX, say whether it is valid. */ | |
1390 | DEFHOOK | |
1391 | (legitimate_address_p, | |
1392 | "", | |
1393 | bool, (enum machine_mode mode, rtx x, bool strict), | |
1394 | default_legitimate_address_p) | |
1395 | ||
1396 | /* True if the given constant can be put into an object_block. */ | |
1397 | DEFHOOK | |
1398 | (use_blocks_for_constant_p, | |
1399 | "", | |
1400 | bool, (enum machine_mode mode, const_rtx x), | |
1401 | hook_bool_mode_const_rtx_false) | |
1402 | ||
1403 | /* The minimum and maximum byte offsets for anchored addresses. */ | |
1404 | DEFHOOKPOD | |
1405 | (min_anchor_offset, | |
1406 | "", | |
1407 | HOST_WIDE_INT, 0) | |
1408 | ||
1409 | DEFHOOKPOD | |
1410 | (max_anchor_offset, | |
1411 | "", | |
1412 | HOST_WIDE_INT, 0) | |
1413 | ||
1414 | /* True if section anchors can be used to access the given symbol. */ | |
1415 | DEFHOOK | |
1416 | (use_anchors_for_symbol_p, | |
1417 | "", | |
1418 | bool, (const_rtx x), | |
1419 | default_use_anchors_for_symbol_p) | |
1420 | ||
1421 | /* True if it is OK to do sibling call optimization for the specified | |
1422 | call expression EXP. DECL will be the called function, or NULL if | |
1423 | this is an indirect call. */ | |
1424 | DEFHOOK | |
1425 | (function_ok_for_sibcall, | |
1426 | "", | |
1427 | bool, (tree decl, tree exp), | |
1428 | hook_bool_tree_tree_false) | |
1429 | ||
1430 | /* Establish appropriate back-end context for processing the function | |
1431 | FNDECL. The argument might be NULL to indicate processing at top | |
1432 | level, outside of any function scope. */ | |
1433 | DEFHOOK | |
1434 | (set_current_function, | |
1435 | "", | |
1436 | void, (tree decl), hook_void_tree) | |
1437 | ||
1438 | /* True if EXP should be placed in a "small data" section. */ | |
1439 | DEFHOOK | |
1440 | (in_small_data_p, | |
1441 | "", | |
1442 | bool, (const_tree exp), | |
1443 | hook_bool_const_tree_false) | |
1444 | ||
1445 | /* True if EXP names an object for which name resolution must resolve | |
1446 | to the current executable or shared library. */ | |
1447 | DEFHOOK | |
1448 | (binds_local_p, | |
1449 | "", | |
1450 | bool, (const_tree exp), | |
1451 | default_binds_local_p) | |
1452 | ||
8637d6a2 | 1453 | /* Check if profiling code is before or after prologue. */ |
1454 | DEFHOOK | |
1455 | (profile_before_prologue, | |
1456 | "It returns true if target wants profile code emitted before prologue.\n\n\ | |
1457 | The default version of this hook use the target macro\n\ | |
1458 | @code{PROFILE_BEFORE_PROLOGUE}.", | |
1459 | bool, (void), | |
1460 | default_profile_before_prologue) | |
1461 | ||
202d6e5f | 1462 | /* Modify and return the identifier of a DECL's external name, |
1463 | originally identified by ID, as required by the target, | |
1464 | (eg, append @nn to windows32 stdcall function names). | |
1465 | The default is to return ID without modification. */ | |
1466 | DEFHOOK | |
1467 | (mangle_decl_assembler_name, | |
1468 | "", | |
1469 | tree, (tree decl, tree id), | |
1470 | default_mangle_decl_assembler_name) | |
1471 | ||
1472 | /* Do something target-specific to record properties of the DECL into | |
1473 | the associated SYMBOL_REF. */ | |
1474 | DEFHOOK | |
1475 | (encode_section_info, | |
1476 | "", | |
1477 | void, (tree decl, rtx rtl, int new_decl_p), | |
1478 | default_encode_section_info) | |
1479 | ||
1480 | /* Undo the effects of encode_section_info on the symbol string. */ | |
1481 | DEFHOOK | |
1482 | (strip_name_encoding, | |
1483 | "", | |
1484 | const char *, (const char *name), | |
1485 | default_strip_name_encoding) | |
1486 | ||
1487 | /* If shift optabs for MODE are known to always truncate the shift count, | |
1488 | return the mask that they apply. Return 0 otherwise. */ | |
1489 | DEFHOOK | |
1490 | (shift_truncation_mask, | |
1491 | "", | |
1492 | unsigned HOST_WIDE_INT, (enum machine_mode mode), | |
1493 | default_shift_truncation_mask) | |
1494 | ||
1495 | /* Return the number of divisions in the given MODE that should be present, | |
1496 | so that it is profitable to turn the division into a multiplication by | |
1497 | the reciprocal. */ | |
1498 | DEFHOOK | |
1499 | (min_divisions_for_recip_mul, | |
1500 | "", | |
1501 | unsigned int, (enum machine_mode mode), | |
1502 | default_min_divisions_for_recip_mul) | |
1503 | ||
1504 | /* If the representation of integral MODE is such that values are | |
1505 | always sign-extended to a wider mode MODE_REP then return | |
1506 | SIGN_EXTEND. Return UNKNOWN otherwise. */ | |
1507 | /* Note that the return type ought to be RTX_CODE, but that's not | |
1508 | necessarily defined at this point. */ | |
1509 | DEFHOOK | |
1510 | (mode_rep_extended, | |
1511 | "", | |
1512 | int, (enum machine_mode mode, enum machine_mode rep_mode), | |
1513 | default_mode_rep_extended) | |
1514 | ||
1515 | /* True if MODE is valid for a pointer in __attribute__((mode("MODE"))). */ | |
1516 | DEFHOOK | |
1517 | (valid_pointer_mode, | |
1518 | "", | |
1519 | bool, (enum machine_mode mode), | |
1520 | default_valid_pointer_mode) | |
1521 | ||
be97d4b6 | 1522 | /* Disambiguate with errno. */ |
1523 | DEFHOOK | |
1524 | (ref_may_alias_errno, | |
1525 | "Define this to return nonzero if the memory reference @var{ref}\ | |
1526 | may alias with the system C library errno location. The default\ | |
1527 | version of this hook assumes the system C library errno location\ | |
1528 | is either a declaration of type int or accessed by dereferencing\ | |
1529 | a pointer to int.", | |
1530 | bool, (struct ao_ref_s *ref), | |
1531 | default_ref_may_alias_errno) | |
1532 | ||
202d6e5f | 1533 | /* Support for named address spaces. */ |
1534 | #undef HOOK_PREFIX | |
1535 | #define HOOK_PREFIX "TARGET_ADDR_SPACE_" | |
1536 | HOOK_VECTOR (TARGET_ADDR_SPACE_HOOKS, addr_space) | |
1537 | ||
1538 | /* MODE to use for a pointer into another address space. */ | |
1539 | DEFHOOK | |
1540 | (pointer_mode, | |
1541 | "", | |
1542 | enum machine_mode, (addr_space_t address_space), | |
1543 | default_addr_space_pointer_mode) | |
1544 | ||
1545 | /* MODE to use for an address in another address space. */ | |
1546 | DEFHOOK | |
1547 | (address_mode, | |
1548 | "", | |
1549 | enum machine_mode, (addr_space_t address_space), | |
1550 | default_addr_space_address_mode) | |
1551 | ||
1552 | /* True if MODE is valid for a pointer in __attribute__((mode("MODE"))) | |
1553 | in another address space. */ | |
1554 | DEFHOOK | |
1555 | (valid_pointer_mode, | |
1556 | "", | |
1557 | bool, (enum machine_mode mode, addr_space_t as), | |
1558 | default_addr_space_valid_pointer_mode) | |
1559 | ||
1560 | /* True if an address is a valid memory address to a given named address | |
1561 | space for a given mode. */ | |
1562 | DEFHOOK | |
1563 | (legitimate_address_p, | |
1564 | "", | |
1565 | bool, (enum machine_mode mode, rtx exp, bool strict, addr_space_t as), | |
1566 | default_addr_space_legitimate_address_p) | |
1567 | ||
1568 | /* Return an updated address to convert an invalid pointer to a named | |
1569 | address space to a valid one. If NULL_RTX is returned use machine | |
1570 | independent methods to make the address valid. */ | |
1571 | DEFHOOK | |
1572 | (legitimize_address, | |
1573 | "", | |
1574 | rtx, (rtx x, rtx oldx, enum machine_mode mode, addr_space_t as), | |
1575 | default_addr_space_legitimize_address) | |
1576 | ||
1577 | /* True if one named address space is a subset of another named address. */ | |
1578 | DEFHOOK | |
1579 | (subset_p, | |
1580 | "", | |
1581 | bool, (addr_space_t superset, addr_space_t subset), | |
1582 | default_addr_space_subset_p) | |
1583 | ||
1584 | /* Function to convert an rtl expression from one address space to another. */ | |
1585 | DEFHOOK | |
1586 | (convert, | |
1587 | "", | |
1588 | rtx, (rtx op, tree from_type, tree to_type), | |
1589 | default_addr_space_convert) | |
1590 | ||
1591 | HOOK_VECTOR_END (addr_space) | |
1592 | ||
1593 | #undef HOOK_PREFIX | |
1594 | #define HOOK_PREFIX "TARGET_" | |
1595 | ||
1596 | /* True if MODE is valid for the target. By "valid", we mean able to | |
1597 | be manipulated in non-trivial ways. In particular, this means all | |
1598 | the arithmetic is supported. */ | |
1599 | DEFHOOK | |
1600 | (scalar_mode_supported_p, | |
1601 | "", | |
1602 | bool, (enum machine_mode mode), | |
1603 | default_scalar_mode_supported_p) | |
1604 | ||
1605 | /* Similarly for vector modes. "Supported" here is less strict. At | |
1606 | least some operations are supported; need to check optabs or builtins | |
1607 | for further details. */ | |
1608 | DEFHOOK | |
1609 | (vector_mode_supported_p, | |
1610 | "", | |
1611 | bool, (enum machine_mode mode), | |
1612 | hook_bool_mode_false) | |
1613 | ||
1614 | /* Compute cost of moving data from a register of class FROM to one of | |
1615 | TO, using MODE. */ | |
1616 | DEFHOOK | |
1617 | (register_move_cost, | |
1618 | "", | |
964229b7 | 1619 | int, (enum machine_mode mode, reg_class_t from, reg_class_t to), |
202d6e5f | 1620 | default_register_move_cost) |
1621 | ||
1622 | /* Compute cost of moving registers to/from memory. */ | |
1623 | /* ??? Documenting the argument types for this hook requires a GFDL | |
1624 | license grant. Also, the documentation uses a different name for RCLASS. */ | |
9de204fa | 1625 | DEFHOOK |
202d6e5f | 1626 | (memory_move_cost, |
1627 | "", | |
964229b7 | 1628 | int, (enum machine_mode mode, reg_class_t rclass, bool in), |
202d6e5f | 1629 | default_memory_move_cost) |
1630 | ||
1631 | /* True for MODE if the target expects that registers in this mode will | |
1632 | be allocated to registers in a small register class. The compiler is | |
1633 | allowed to use registers explicitly used in the rtl as spill registers | |
1634 | but it should prevent extending the lifetime of these registers. */ | |
1635 | DEFHOOK | |
1636 | (small_register_classes_for_mode_p, | |
1637 | "", | |
1638 | bool, (enum machine_mode mode), | |
1639 | hook_bool_mode_false) | |
1640 | ||
a50372fe | 1641 | /* Register number for a flags register. Only needs to be defined if the |
1642 | target is constrainted to use post-reload comparison elimination. */ | |
1643 | DEFHOOKPOD | |
1644 | (flags_regnum, | |
1645 | "If the target has a dedicated flags register, and it needs to use the\ | |
1646 | post-reload comparison elimination pass, then this value should be set\ | |
1647 | appropriately.", | |
1648 | unsigned int, INVALID_REGNUM) | |
1649 | ||
202d6e5f | 1650 | /* Compute a (partial) cost for rtx X. Return true if the complete |
1651 | cost has been computed, and false if subexpressions should be | |
1652 | scanned. In either case, *TOTAL contains the cost result. */ | |
1653 | /* Note that CODE and OUTER_CODE ought to be RTX_CODE, but that's | |
1654 | not necessarily defined at this point. */ | |
1655 | DEFHOOK | |
1656 | (rtx_costs, | |
1657 | "", | |
1658 | bool, (rtx x, int code, int outer_code, int *total, bool speed), | |
1659 | hook_bool_rtx_int_int_intp_bool_false) | |
1660 | ||
1661 | /* Compute the cost of X, used as an address. Never called with | |
1662 | invalid addresses. */ | |
1663 | DEFHOOK | |
1664 | (address_cost, | |
1665 | "", | |
1666 | int, (rtx address, bool speed), | |
1667 | default_address_cost) | |
1668 | ||
1669 | /* Return where to allocate pseudo for a given hard register initial value. */ | |
1670 | DEFHOOK | |
1671 | (allocate_initial_value, | |
1672 | "", | |
1673 | rtx, (rtx hard_reg), NULL) | |
1674 | ||
1675 | /* Return nonzero if evaluating UNSPEC[_VOLATILE] X might cause a trap. | |
1676 | FLAGS has the same meaning as in rtlanal.c: may_trap_p_1. */ | |
1677 | DEFHOOK | |
1678 | (unspec_may_trap_p, | |
1679 | "", | |
1680 | int, (const_rtx x, unsigned flags), | |
1681 | default_unspec_may_trap_p) | |
1682 | ||
1683 | /* Given a register, this hook should return a parallel of registers | |
1684 | to represent where to find the register pieces. Define this hook | |
1685 | if the register and its mode are represented in Dwarf in | |
1686 | non-contiguous locations, or if the register should be | |
1687 | represented in more than one register in Dwarf. Otherwise, this | |
1688 | hook should return NULL_RTX. */ | |
1689 | DEFHOOK | |
1690 | (dwarf_register_span, | |
1691 | "", | |
1692 | rtx, (rtx reg), | |
1693 | hook_rtx_rtx_null) | |
1694 | ||
1695 | /* If expand_builtin_init_dwarf_reg_sizes needs to fill in table | |
1696 | entries not corresponding directly to registers below | |
1697 | FIRST_PSEUDO_REGISTER, this hook should generate the necessary | |
1698 | code, given the address of the table. */ | |
1699 | DEFHOOK | |
1700 | (init_dwarf_reg_sizes_extra, | |
1701 | "", | |
1702 | void, (tree address), | |
1703 | hook_void_tree) | |
1704 | ||
1705 | /* Fetch the fixed register(s) which hold condition codes, for | |
1706 | targets where it makes sense to look for duplicate assignments to | |
1707 | the condition codes. This should return true if there is such a | |
1708 | register, false otherwise. The arguments should be set to the | |
1709 | fixed register numbers. Up to two condition code registers are | |
1710 | supported. If there is only one for this target, the int pointed | |
1711 | at by the second argument should be set to -1. */ | |
1712 | DEFHOOK | |
1713 | (fixed_condition_code_regs, | |
1714 | "", | |
1715 | bool, (unsigned int *p1, unsigned int *p2), | |
1716 | hook_bool_uintp_uintp_false) | |
1717 | ||
1718 | /* If two condition code modes are compatible, return a condition | |
1719 | code mode which is compatible with both, such that a comparison | |
1720 | done in the returned mode will work for both of the original | |
1721 | modes. If the condition code modes are not compatible, return | |
1722 | VOIDmode. */ | |
1723 | DEFHOOK | |
1724 | (cc_modes_compatible, | |
1725 | "", | |
1726 | enum machine_mode, (enum machine_mode m1, enum machine_mode m2), | |
1727 | default_cc_modes_compatible) | |
1728 | ||
1729 | /* Do machine-dependent code transformations. Called just before | |
1730 | delayed-branch scheduling. */ | |
1731 | DEFHOOK | |
1732 | (machine_dependent_reorg, | |
1733 | "", | |
1734 | void, (void), NULL) | |
1735 | ||
1736 | /* Create the __builtin_va_list type. */ | |
1737 | DEFHOOK | |
1738 | (build_builtin_va_list, | |
1739 | "", | |
1740 | tree, (void), | |
1741 | std_build_builtin_va_list) | |
1742 | ||
1743 | /* Enumerate the va list variants. */ | |
303ece6c | 1744 | DEFHOOK |
202d6e5f | 1745 | (enum_va_list_p, |
1746 | "", | |
1747 | int, (int idx, const char **pname, tree *ptree), | |
1748 | NULL) | |
1749 | ||
1750 | /* Get the cfun/fndecl calling abi __builtin_va_list type. */ | |
1751 | DEFHOOK | |
1752 | (fn_abi_va_list, | |
1753 | "", | |
1754 | tree, (tree fndecl), | |
1755 | std_fn_abi_va_list) | |
1756 | ||
1757 | /* Get the __builtin_va_list type dependent on input type. */ | |
1758 | DEFHOOK | |
1759 | (canonical_va_list_type, | |
1760 | "", | |
1761 | tree, (tree type), | |
1762 | std_canonical_va_list_type) | |
1763 | ||
1764 | /* ??? Documenting this hook requires a GFDL license grant. */ | |
1765 | DEFHOOK_UNDOC | |
1766 | (expand_builtin_va_start, | |
1767 | "Expand the @code{__builtin_va_start} builtin.", | |
1768 | void, (tree valist, rtx nextarg), NULL) | |
1769 | ||
1770 | /* Gimplifies a VA_ARG_EXPR. */ | |
1771 | DEFHOOK | |
1772 | (gimplify_va_arg_expr, | |
1773 | "", | |
1774 | tree, (tree valist, tree type, gimple_seq *pre_p, gimple_seq *post_p), | |
1775 | std_gimplify_va_arg_expr) | |
1776 | ||
1777 | /* Validity-checking routines for PCH files, target-specific. | |
1778 | get_pch_validity returns a pointer to the data to be stored, | |
1779 | and stores the size in its argument. pch_valid_p gets the same | |
1780 | information back and returns NULL if the PCH is valid, | |
1781 | or an error message if not. */ | |
1782 | DEFHOOK | |
1783 | (get_pch_validity, | |
1784 | "", | |
1785 | void *, (size_t *sz), | |
1786 | default_get_pch_validity) | |
1787 | ||
1788 | DEFHOOK | |
1789 | (pch_valid_p, | |
1790 | "", | |
1791 | const char *, (const void *data, size_t sz), | |
1792 | default_pch_valid_p) | |
1793 | ||
1794 | /* If nonnull, this function checks whether a PCH file with the | |
1795 | given set of target flags can be used. It returns NULL if so, | |
1796 | otherwise it returns an error message. */ | |
1797 | DEFHOOK | |
1798 | (check_pch_target_flags, | |
1799 | "", | |
1800 | const char *, (int pch_flags), NULL) | |
1801 | ||
1802 | /* True if the compiler should give an enum type only as many | |
1803 | bytes as it takes to represent the range of possible values of | |
1804 | that type. */ | |
1805 | DEFHOOK | |
1806 | (default_short_enums, | |
1807 | "", | |
1808 | bool, (void), | |
1809 | hook_bool_void_false) | |
1810 | ||
1811 | /* This target hook returns an rtx that is used to store the address | |
1812 | of the current frame into the built-in setjmp buffer. */ | |
1813 | DEFHOOK | |
1814 | (builtin_setjmp_frame_value, | |
1815 | "", | |
1816 | rtx, (void), | |
1817 | default_builtin_setjmp_frame_value) | |
1818 | ||
1819 | /* This target hook should add STRING_CST trees for any hard regs | |
1820 | the port wishes to automatically clobber for an asm. */ | |
1821 | DEFHOOK | |
1822 | (md_asm_clobbers, | |
1823 | "", | |
1824 | tree, (tree outputs, tree inputs, tree clobbers), | |
1825 | hook_tree_tree_tree_tree_3rd_identity) | |
1826 | ||
1827 | /* This target hook allows the backend to specify a calling convention | |
1828 | in the debug information. This function actually returns an | |
1829 | enum dwarf_calling_convention, but because of forward declarations | |
1830 | and not wanting to include dwarf2.h everywhere target.h is included | |
1831 | the function is being declared as an int. */ | |
1832 | DEFHOOK | |
1833 | (dwarf_calling_convention, | |
1834 | "", | |
1835 | int, (const_tree function), | |
1836 | hook_int_const_tree_0) | |
1837 | ||
1838 | /* This target hook allows the backend to emit frame-related insns that | |
1839 | contain UNSPECs or UNSPEC_VOLATILEs. The call frame debugging info | |
1840 | engine will invoke it on insns of the form | |
1841 | (set (reg) (unspec [...] UNSPEC_INDEX)) | |
1842 | and | |
1843 | (set (reg) (unspec_volatile [...] UNSPECV_INDEX)) | |
1844 | to let the backend emit the call frame instructions. */ | |
1845 | DEFHOOK | |
1846 | (dwarf_handle_frame_unspec, | |
1847 | "", | |
1848 | void, (const char *label, rtx pattern, int index), NULL) | |
1849 | ||
1850 | /* ??? Documenting this hook requires a GFDL license grant. */ | |
1851 | DEFHOOK_UNDOC | |
1852 | (stdarg_optimize_hook, | |
1853 | "Perform architecture specific checking of statements gimplified\ | |
1854 | from @code{VA_ARG_EXPR}. @var{stmt} is the statement. Returns true if\ | |
1855 | the statement doesn't need to be checked for @code{va_list} references.", | |
1856 | bool, (struct stdarg_info *ai, const_gimple stmt), NULL) | |
1857 | ||
1858 | /* This target hook allows the operating system to override the DECL | |
1859 | that represents the external variable that contains the stack | |
1860 | protection guard variable. The type of this DECL is ptr_type_node. */ | |
1861 | DEFHOOK | |
1862 | (stack_protect_guard, | |
1863 | "", | |
1864 | tree, (void), | |
1865 | default_stack_protect_guard) | |
1866 | ||
1867 | /* This target hook allows the operating system to override the CALL_EXPR | |
1868 | that is invoked when a check vs the guard variable fails. */ | |
1869 | DEFHOOK | |
1870 | (stack_protect_fail, | |
1871 | "", | |
1872 | tree, (void), | |
1873 | default_external_stack_protect_fail) | |
1874 | ||
48b14f50 | 1875 | DEFHOOK |
1876 | (supports_split_stack, | |
b213bf24 | 1877 | "Whether this target supports splitting the stack when the options\ |
1878 | described in @var{opts} have been passed. This is called\ | |
48b14f50 | 1879 | after options have been parsed, so the target may reject splitting\ |
1880 | the stack in some configurations. The default version of this hook\ | |
1881 | returns false. If @var{report} is true, this function may issue a warning\ | |
1882 | or error; if @var{report} is false, it must simply return a value", | |
b213bf24 | 1883 | bool, (bool report, struct gcc_options *opts), |
1884 | hook_bool_bool_gcc_optionsp_false) | |
48b14f50 | 1885 | |
202d6e5f | 1886 | /* Returns NULL if target supports the insn within a doloop block, |
1887 | otherwise it returns an error message. */ | |
1888 | DEFHOOK | |
1889 | (invalid_within_doloop, | |
1890 | "", | |
1891 | const char *, (const_rtx insn), | |
1892 | default_invalid_within_doloop) | |
1893 | ||
1894 | DEFHOOK | |
1895 | (valid_dllimport_attribute_p, | |
1896 | "@var{decl} is a variable or function with @code{__attribute__((dllimport))}\ | |
1897 | specified. Use this hook if the target needs to add extra validation\ | |
1898 | checks to @code{handle_dll_attribute}.", | |
1899 | bool, (const_tree decl), | |
1900 | hook_bool_const_tree_true) | |
1901 | ||
1902 | /* If non-zero, align constant anchors in CSE to a multiple of this | |
1903 | value. */ | |
1904 | DEFHOOKPOD | |
1905 | (const_anchor, | |
1906 | "", | |
1907 | unsigned HOST_WIDE_INT, 0) | |
1908 | ||
1909 | /* Functions relating to calls - argument passing, returns, etc. */ | |
1910 | /* Members of struct call have no special macro prefix. */ | |
1911 | HOOK_VECTOR (TARGET_CALLS, calls) | |
1912 | ||
1913 | DEFHOOK | |
1914 | (promote_function_mode, | |
1915 | "", | |
1916 | enum machine_mode, (const_tree type, enum machine_mode mode, int *punsignedp, | |
1917 | const_tree funtype, int for_return), | |
1918 | default_promote_function_mode) | |
1919 | ||
1920 | DEFHOOK | |
1921 | (promote_prototypes, | |
1922 | "", | |
1923 | bool, (const_tree fntype), | |
1924 | hook_bool_const_tree_false) | |
1925 | ||
1926 | DEFHOOK | |
1927 | (struct_value_rtx, | |
1928 | "", | |
1929 | rtx, (tree fndecl, int incoming), | |
1930 | hook_rtx_tree_int_null) | |
1931 | DEFHOOK | |
1932 | (return_in_memory, | |
1933 | "", | |
1934 | bool, (const_tree type, const_tree fntype), | |
1935 | default_return_in_memory) | |
1936 | ||
1937 | DEFHOOK | |
1938 | (return_in_msb, | |
1939 | "", | |
1940 | bool, (const_tree type), | |
1941 | hook_bool_const_tree_false) | |
1942 | ||
1943 | /* Return true if a parameter must be passed by reference. TYPE may | |
1944 | be null if this is a libcall. CA may be null if this query is | |
1945 | from __builtin_va_arg. */ | |
b4c24d67 | 1946 | DEFHOOK |
202d6e5f | 1947 | (pass_by_reference, |
1948 | "", | |
1949 | bool, | |
1950 | (CUMULATIVE_ARGS *cum, enum machine_mode mode, const_tree type, bool named), | |
1951 | hook_bool_CUMULATIVE_ARGS_mode_tree_bool_false) | |
1952 | ||
1953 | DEFHOOK | |
1954 | (expand_builtin_saveregs, | |
1955 | "", | |
1956 | rtx, (void), | |
1957 | default_expand_builtin_saveregs) | |
1958 | ||
1959 | /* Returns pretend_argument_size. */ | |
1960 | DEFHOOK | |
1961 | (setup_incoming_varargs, | |
1962 | "", | |
1963 | void, (CUMULATIVE_ARGS *args_so_far, enum machine_mode mode, tree type, | |
1964 | int *pretend_args_size, int second_time), | |
1965 | default_setup_incoming_varargs) | |
1966 | ||
1967 | DEFHOOK | |
1968 | (strict_argument_naming, | |
1969 | "", | |
1970 | bool, (CUMULATIVE_ARGS *ca), | |
1971 | hook_bool_CUMULATIVE_ARGS_false) | |
1972 | ||
1973 | /* Returns true if we should use | |
1974 | targetm.calls.setup_incoming_varargs() and/or | |
1975 | targetm.calls.strict_argument_naming(). */ | |
1976 | DEFHOOK | |
1977 | (pretend_outgoing_varargs_named, | |
1978 | "", | |
1979 | bool, (CUMULATIVE_ARGS *ca), | |
1980 | default_pretend_outgoing_varargs_named) | |
1981 | ||
1982 | /* Given a complex type T, return true if a parameter of type T | |
1983 | should be passed as two scalars. */ | |
1984 | DEFHOOK | |
1985 | (split_complex_arg, | |
1986 | "", | |
1987 | bool, (const_tree type), NULL) | |
1988 | ||
1989 | /* Return true if type T, mode MODE, may not be passed in registers, | |
1990 | but must be passed on the stack. */ | |
1991 | /* ??? This predicate should be applied strictly after pass-by-reference. | |
1992 | Need audit to verify that this is the case. */ | |
1993 | DEFHOOK | |
1994 | (must_pass_in_stack, | |
1995 | "", | |
1996 | bool, (enum machine_mode mode, const_tree type), | |
1997 | must_pass_in_stack_var_size_or_pad) | |
1998 | ||
1999 | /* Return true if type TYPE, mode MODE, which is passed by reference, | |
2000 | should have the object copy generated by the callee rather than | |
2001 | the caller. It is never called for TYPE requiring constructors. */ | |
2002 | DEFHOOK | |
2003 | (callee_copies, | |
2004 | "", | |
2005 | bool, | |
2006 | (CUMULATIVE_ARGS *cum, enum machine_mode mode, const_tree type, bool named), | |
2007 | hook_bool_CUMULATIVE_ARGS_mode_tree_bool_false) | |
2008 | ||
2009 | /* Return zero for arguments passed entirely on the stack or entirely | |
2010 | in registers. If passed in both, return the number of bytes passed | |
2011 | in registers; the balance is therefore passed on the stack. */ | |
2012 | DEFHOOK | |
2013 | (arg_partial_bytes, | |
2014 | "", | |
2015 | int, (CUMULATIVE_ARGS *cum, enum machine_mode mode, tree type, bool named), | |
2016 | hook_int_CUMULATIVE_ARGS_mode_tree_bool_0) | |
2017 | ||
2018 | /* Update the state in CA to advance past an argument in the | |
2019 | argument list. The values MODE, TYPE, and NAMED describe that | |
2020 | argument. */ | |
81bcd36c | 2021 | DEFHOOK |
202d6e5f | 2022 | (function_arg_advance, |
2023 | "", | |
2024 | void, | |
2025 | (CUMULATIVE_ARGS *ca, enum machine_mode mode, const_tree type, bool named), | |
2026 | default_function_arg_advance) | |
2027 | ||
2028 | /* Return zero if the argument described by the state of CA should | |
2029 | be placed on a stack, or a hard register in which to store the | |
2030 | argument. The values MODE, TYPE, and NAMED describe that | |
2031 | argument. */ | |
81bcd36c | 2032 | DEFHOOK |
202d6e5f | 2033 | (function_arg, |
2034 | "", | |
9d81c8bb | 2035 | rtx, (CUMULATIVE_ARGS *ca, enum machine_mode mode, const_tree type, |
202d6e5f | 2036 | bool named), |
2037 | default_function_arg) | |
2038 | ||
2039 | /* Likewise, but for machines with register windows. Return the | |
2040 | location where the argument will appear to the callee. */ | |
81bcd36c | 2041 | DEFHOOK |
202d6e5f | 2042 | (function_incoming_arg, |
2043 | "", | |
9d81c8bb | 2044 | rtx, (CUMULATIVE_ARGS *ca, enum machine_mode mode, const_tree type, |
202d6e5f | 2045 | bool named), |
2046 | default_function_incoming_arg) | |
2047 | ||
bd99ba64 | 2048 | DEFHOOK |
2049 | (function_arg_boundary, | |
2050 | "", | |
2051 | unsigned int, (enum machine_mode mode, const_tree type), | |
2052 | default_function_arg_boundary) | |
2053 | ||
202d6e5f | 2054 | /* Return the diagnostic message string if function without a prototype |
2055 | is not allowed for this 'val' argument; NULL otherwise. */ | |
2056 | DEFHOOK | |
2057 | (invalid_arg_for_unprototyped_fn, | |
2058 | "", | |
2059 | const char *, (const_tree typelist, const_tree funcdecl, const_tree val), | |
2060 | hook_invalid_arg_for_unprototyped_fn) | |
2061 | ||
2062 | /* Return an rtx for the return value location of the function | |
2063 | specified by FN_DECL_OR_TYPE with a return type of RET_TYPE. */ | |
2064 | DEFHOOK | |
2065 | (function_value, | |
2066 | "", | |
2067 | rtx, (const_tree ret_type, const_tree fn_decl_or_type, bool outgoing), | |
2068 | default_function_value) | |
2069 | ||
2070 | /* Return the rtx for the result of a libcall of mode MODE, | |
2071 | calling the function FN_NAME. */ | |
2072 | DEFHOOK | |
2073 | (libcall_value, | |
2074 | "", | |
2075 | rtx, (enum machine_mode mode, const_rtx fun), | |
2076 | default_libcall_value) | |
2077 | ||
2078 | /* Return true if REGNO is a possible register number for | |
2079 | a function value as seen by the caller. */ | |
2080 | DEFHOOK | |
2081 | (function_value_regno_p, | |
2082 | "", | |
2083 | bool, (const unsigned int regno), | |
2084 | default_function_value_regno_p) | |
2085 | ||
2086 | /* ??? Documenting this hook requires a GFDL license grant. */ | |
2087 | DEFHOOK_UNDOC | |
2088 | (internal_arg_pointer, | |
2089 | "Return an rtx for the argument pointer incoming to the\ | |
2090 | current function.", | |
2091 | rtx, (void), | |
2092 | default_internal_arg_pointer) | |
2093 | ||
2094 | /* Update the current function stack boundary if needed. */ | |
2095 | DEFHOOK | |
2096 | (update_stack_boundary, | |
2097 | "", | |
2098 | void, (void), NULL) | |
2099 | ||
2100 | /* Handle stack alignment and return an rtx for Dynamic Realign | |
2101 | Argument Pointer if necessary. */ | |
2102 | DEFHOOK | |
2103 | (get_drap_rtx, | |
2104 | "", | |
2105 | rtx, (void), NULL) | |
2106 | ||
2107 | /* Return true if all function parameters should be spilled to the | |
2108 | stack. */ | |
2109 | DEFHOOK | |
2110 | (allocate_stack_slots_for_args, | |
2111 | "", | |
2112 | bool, (void), | |
2113 | hook_bool_void_true) | |
2114 | ||
2115 | /* Return an rtx for the static chain for FNDECL. If INCOMING_P is true, | |
2116 | then it should be for the callee; otherwise for the caller. */ | |
2117 | DEFHOOK | |
2118 | (static_chain, | |
2119 | "", | |
2120 | rtx, (const_tree fndecl, bool incoming_p), | |
2121 | default_static_chain) | |
2122 | ||
2123 | /* Fill in the trampoline at MEM with a call to FNDECL and a | |
2124 | static chain value of CHAIN. */ | |
2125 | DEFHOOK | |
2126 | (trampoline_init, | |
2127 | "", | |
2128 | void, (rtx m_tramp, tree fndecl, rtx static_chain), | |
2129 | default_trampoline_init) | |
2130 | ||
2131 | /* Adjust the address of the trampoline in a target-specific way. */ | |
2132 | DEFHOOK | |
2133 | (trampoline_adjust_address, | |
2134 | "", | |
2135 | rtx, (rtx addr), NULL) | |
2136 | ||
2137 | /* Return the number of bytes of its own arguments that a function | |
2138 | pops on returning, or 0 if the function pops no arguments and the | |
2139 | caller must therefore pop them all after the function returns. */ | |
2140 | /* ??? tm.texi has no types for the parameters. */ | |
fe0b4016 | 2141 | DEFHOOK |
202d6e5f | 2142 | (return_pops_args, |
2143 | "", | |
2144 | int, (tree fundecl, tree funtype, int size), | |
2145 | default_return_pops_args) | |
2146 | ||
4bac51c9 | 2147 | /* Return a mode wide enough to copy any function value that might be |
2148 | returned. */ | |
2149 | DEFHOOK | |
2150 | (get_raw_result_mode, | |
2151 | "This target hook returns the mode to be used when accessing raw return\ | |
2152 | registers in @code{__builtin_return}. Define this macro if the value\ | |
2153 | in @var{reg_raw_mode} is not correct.", | |
2154 | enum machine_mode, (int regno), | |
2155 | default_get_reg_raw_mode) | |
2156 | ||
2157 | /* Return a mode wide enough to copy any argument value that might be | |
2158 | passed. */ | |
2159 | DEFHOOK | |
2160 | (get_raw_arg_mode, | |
2161 | "This target hook returns the mode to be used when accessing raw argument\ | |
2162 | registers in @code{__builtin_apply_args}. Define this macro if the value\ | |
2163 | in @var{reg_raw_mode} is not correct.", | |
2164 | enum machine_mode, (int regno), | |
2165 | default_get_reg_raw_mode) | |
2166 | ||
202d6e5f | 2167 | HOOK_VECTOR_END (calls) |
2168 | ||
2169 | /* Return the diagnostic message string if conversion from FROMTYPE | |
2170 | to TOTYPE is not allowed, NULL otherwise. */ | |
2171 | DEFHOOK | |
2172 | (invalid_conversion, | |
2173 | "", | |
2174 | const char *, (const_tree fromtype, const_tree totype), | |
2175 | hook_constcharptr_const_tree_const_tree_null) | |
2176 | ||
2177 | /* Return the diagnostic message string if the unary operation OP is | |
2178 | not permitted on TYPE, NULL otherwise. */ | |
2179 | DEFHOOK | |
2180 | (invalid_unary_op, | |
2181 | "", | |
2182 | const char *, (int op, const_tree type), | |
2183 | hook_constcharptr_int_const_tree_null) | |
2184 | ||
2185 | /* Return the diagnostic message string if the binary operation OP | |
2186 | is not permitted on TYPE1 and TYPE2, NULL otherwise. */ | |
2187 | DEFHOOK | |
2188 | (invalid_binary_op, | |
2189 | "", | |
2190 | const char *, (int op, const_tree type1, const_tree type2), | |
2191 | hook_constcharptr_int_const_tree_const_tree_null) | |
2192 | ||
2193 | /* Return the diagnostic message string if TYPE is not valid as a | |
2194 | function parameter type, NULL otherwise. */ | |
2195 | DEFHOOK | |
2196 | (invalid_parameter_type, | |
2197 | "", | |
2198 | const char *, (const_tree type), | |
2199 | hook_constcharptr_const_tree_null) | |
2200 | ||
2201 | /* Return the diagnostic message string if TYPE is not valid as a | |
2202 | function return type, NULL otherwise. */ | |
2203 | DEFHOOK | |
2204 | (invalid_return_type, | |
2205 | "", | |
2206 | const char *, (const_tree type), | |
2207 | hook_constcharptr_const_tree_null) | |
2208 | ||
2209 | /* If values of TYPE are promoted to some other type when used in | |
2210 | expressions (analogous to the integer promotions), return that type, | |
2211 | or NULL_TREE otherwise. */ | |
2212 | DEFHOOK | |
2213 | (promoted_type, | |
2214 | "", | |
2215 | tree, (const_tree type), | |
2216 | hook_tree_const_tree_null) | |
2217 | ||
2218 | /* Convert EXPR to TYPE, if target-specific types with special conversion | |
2219 | rules are involved. Return the converted expression, or NULL to apply | |
2220 | the standard conversion rules. */ | |
2221 | DEFHOOK | |
2222 | (convert_to_type, | |
2223 | "", | |
2224 | tree, (tree type, tree expr), | |
2225 | hook_tree_tree_tree_null) | |
2226 | ||
a5af08d2 | 2227 | /* Return the array of IRA cover classes for the current target. */ |
2228 | DEFHOOK | |
2229 | (ira_cover_classes, | |
2230 | "", | |
2231 | const reg_class_t *, (void), | |
2232 | default_ira_cover_classes) | |
2233 | ||
202d6e5f | 2234 | /* Return the class for a secondary reload, and fill in extra information. */ |
2235 | DEFHOOK | |
2236 | (secondary_reload, | |
2237 | "", | |
964229b7 | 2238 | reg_class_t, |
2239 | (bool in_p, rtx x, reg_class_t reload_class, enum machine_mode reload_mode, | |
202d6e5f | 2240 | secondary_reload_info *sri), |
2241 | default_secondary_reload) | |
2242 | ||
09a17585 | 2243 | /* Given an rtx X being reloaded into a reg required to be in class CLASS, |
2244 | return the class of reg to actually use. */ | |
2245 | DEFHOOK | |
2246 | (preferred_reload_class, | |
2247 | "", | |
2248 | reg_class_t, | |
2249 | (rtx x, reg_class_t rclass), | |
2250 | default_preferred_reload_class) | |
2251 | ||
71db0d8b | 2252 | /* Like TARGET_PREFERRED_RELOAD_CLASS, but for output reloads instead of |
2253 | input reloads. */ | |
2254 | DEFHOOK | |
2255 | (preferred_output_reload_class, | |
2256 | "", | |
2257 | reg_class_t, | |
2258 | (rtx x, reg_class_t rclass), | |
2259 | default_preferred_output_reload_class) | |
2260 | ||
24dd0668 | 2261 | DEFHOOK |
2262 | (class_likely_spilled_p, | |
2263 | "", | |
2264 | bool, (reg_class_t rclass), | |
2265 | default_class_likely_spilled_p) | |
2266 | ||
d78118a3 | 2267 | DEFHOOK |
2268 | (preferred_rename_class, | |
2269 | "A target hook that places additional preference on the register\ | |
2270 | class to use when it is necessary to rename a register in class\ | |
00036f1c | 2271 | @var{rclass} to another class, or perhaps @var{NO_REGS}, if no\ |
2272 | preferred register class is found or hook @code{preferred_rename_class}\ | |
d78118a3 | 2273 | is not implemented.\ |
2274 | Sometimes returning a more restrictive class makes better code. For\ | |
2275 | example, on ARM, thumb-2 instructions using @code{LO_REGS} may be\ | |
2276 | smaller than instructions using @code{GENERIC_REGS}. By returning\ | |
2277 | @code{LO_REGS} from @code{preferred_rename_class}, code size can\ | |
2278 | be reduced.", | |
2279 | reg_class_t, (reg_class_t rclass), | |
2280 | default_preferred_rename_class) | |
2281 | ||
202d6e5f | 2282 | /* This target hook allows the backend to perform additional |
2283 | processing while initializing for variable expansion. */ | |
2284 | DEFHOOK | |
2285 | (expand_to_rtl_hook, | |
2286 | "", | |
2287 | void, (void), | |
2288 | hook_void_void) | |
2289 | ||
2290 | /* This target hook allows the backend to perform additional | |
2291 | instantiations on rtx that are not actually in insns yet, | |
2292 | but will be later. */ | |
2293 | DEFHOOK | |
2294 | (instantiate_decls, | |
2295 | "", | |
2296 | void, (void), | |
2297 | hook_void_void) | |
2298 | ||
2299 | /* Return true if is OK to use a hard register REGNO as scratch register | |
2300 | in peephole2. */ | |
2301 | DEFHOOK | |
2302 | (hard_regno_scratch_ok, | |
2303 | "", | |
2304 | bool, (unsigned int regno), | |
2305 | default_hard_regno_scratch_ok) | |
2306 | ||
2307 | /* Return the smallest number of different values for which it is best to | |
2308 | use a jump-table instead of a tree of conditional branches. */ | |
2309 | DEFHOOK | |
2310 | (case_values_threshold, | |
2311 | "", | |
2312 | unsigned int, (void), | |
2313 | default_case_values_threshold) | |
2314 | ||
2315 | /* Retutn true if a function must have and use a frame pointer. */ | |
2316 | DEFHOOK | |
2317 | (frame_pointer_required, | |
2318 | "", | |
2319 | bool, (void), | |
2320 | hook_bool_void_false) | |
2321 | ||
2322 | /* Returns true if the compiler is allowed to try to replace register number | |
2323 | from-reg with register number to-reg. */ | |
2324 | DEFHOOK | |
2325 | (can_eliminate, | |
2326 | "", | |
2327 | bool, (const int from_reg, const int to_reg), | |
2328 | hook_bool_const_int_const_int_true) | |
2329 | ||
b2d7ede1 | 2330 | /* Modify any or all of fixed_regs, call_used_regs, global_regs, |
2331 | reg_names, and reg_class_contents to account of the vagaries of the | |
2332 | target. */ | |
2333 | DEFHOOK | |
2334 | (conditional_register_usage, | |
2335 | "", | |
2336 | void, (void), | |
2337 | hook_void_void) | |
2338 | ||
202d6e5f | 2339 | /* Functions specific to the C family of frontends. */ |
2340 | #undef HOOK_PREFIX | |
2341 | #define HOOK_PREFIX "TARGET_C_" | |
2342 | HOOK_VECTOR (TARGET_C, c) | |
2343 | ||
2344 | /* ??? Documenting this hook requires a GFDL license grant. */ | |
2345 | DEFHOOK_UNDOC | |
2346 | (mode_for_suffix, | |
2347 | "Return machine mode for non-standard constant literal suffix @var{c},\ | |
2348 | or VOIDmode if non-standard suffixes are unsupported.", | |
2349 | enum machine_mode, (char c), | |
2350 | default_mode_for_suffix) | |
2351 | ||
2352 | HOOK_VECTOR_END (c) | |
2353 | ||
2354 | /* Functions specific to the C++ frontend. */ | |
2355 | #undef HOOK_PREFIX | |
2356 | #define HOOK_PREFIX "TARGET_CXX_" | |
2357 | HOOK_VECTOR (TARGET_CXX, cxx) | |
2358 | ||
2359 | /* Return the integer type used for guard variables. */ | |
2360 | DEFHOOK | |
2361 | (guard_type, | |
2362 | "", | |
2363 | tree, (void), | |
2364 | default_cxx_guard_type) | |
2365 | ||
2366 | /* Return true if only the low bit of the guard should be tested. */ | |
2367 | DEFHOOK | |
2368 | (guard_mask_bit, | |
2369 | "", | |
2370 | bool, (void), | |
2371 | hook_bool_void_false) | |
2372 | ||
2373 | /* Returns the size of the array cookie for an array of type. */ | |
2374 | DEFHOOK | |
2375 | (get_cookie_size, | |
2376 | "", | |
2377 | tree, (tree type), | |
2378 | default_cxx_get_cookie_size) | |
2379 | ||
2380 | /* Returns true if the element size should be stored in the array cookie. */ | |
2381 | DEFHOOK | |
2382 | (cookie_has_size, | |
2383 | "", | |
2384 | bool, (void), | |
2385 | hook_bool_void_false) | |
2386 | ||
2387 | /* Allows backends to perform additional processing when | |
2388 | deciding if a class should be exported or imported. */ | |
2389 | DEFHOOK | |
2390 | (import_export_class, | |
2391 | "", | |
2392 | int, (tree type, int import_export), NULL) | |
2393 | ||
2394 | /* Returns true if constructors and destructors return "this". */ | |
2395 | DEFHOOK | |
2396 | (cdtor_returns_this, | |
2397 | "", | |
2398 | bool, (void), | |
2399 | hook_bool_void_false) | |
2400 | ||
2401 | /* Returns true if the key method for a class can be an inline | |
2402 | function, so long as it is not declared inline in the class | |
2403 | itself. Returning true is the behavior required by the Itanium C++ ABI. */ | |
2404 | DEFHOOK | |
2405 | (key_method_may_be_inline, | |
2406 | "", | |
2407 | bool, (void), | |
2408 | hook_bool_void_true) | |
2409 | ||
2410 | DEFHOOK | |
2411 | (determine_class_data_visibility, | |
2412 | "@var{decl} is a virtual table, virtual table table, typeinfo object,\ | |
2413 | or other similar implicit class data object that will be emitted with\ | |
2414 | external linkage in this translation unit. No ELF visibility has been\ | |
2415 | explicitly specified. If the target needs to specify a visibility\ | |
2416 | other than that of the containing class, use this hook to set\ | |
2417 | @code{DECL_VISIBILITY} and @code{DECL_VISIBILITY_SPECIFIED}.", | |
2418 | void, (tree decl), | |
2419 | hook_void_tree) | |
2420 | ||
2421 | /* Returns true (the default) if virtual tables and other | |
2422 | similar implicit class data objects are always COMDAT if they | |
2423 | have external linkage. If this hook returns false, then | |
2424 | class data for classes whose virtual table will be emitted in | |
2425 | only one translation unit will not be COMDAT. */ | |
2426 | DEFHOOK | |
2427 | (class_data_always_comdat, | |
2428 | "", | |
2429 | bool, (void), | |
2430 | hook_bool_void_true) | |
2431 | ||
2432 | /* Returns true (the default) if the RTTI for the basic types, | |
2433 | which is always defined in the C++ runtime, should be COMDAT; | |
2434 | false if it should not be COMDAT. */ | |
2435 | DEFHOOK | |
2436 | (library_rtti_comdat, | |
2437 | "", | |
2438 | bool, (void), | |
2439 | hook_bool_void_true) | |
2440 | ||
2441 | /* Returns true if __aeabi_atexit should be used to register static | |
2442 | destructors. */ | |
2443 | DEFHOOK | |
2444 | (use_aeabi_atexit, | |
2445 | "", | |
2446 | bool, (void), | |
2447 | hook_bool_void_false) | |
2448 | ||
2449 | /* Returns true if target may use atexit in the same manner as | |
2450 | __cxa_atexit to register static destructors. */ | |
2451 | DEFHOOK | |
2452 | (use_atexit_for_cxa_atexit, | |
2453 | "", | |
2454 | bool, (void), | |
2455 | hook_bool_void_false) | |
2456 | ||
2457 | DEFHOOK | |
2458 | (adjust_class_at_definition, | |
2459 | "@var{type} is a C++ class (i.e., RECORD_TYPE or UNION_TYPE) that has just\ | |
2460 | been defined. Use this hook to make adjustments to the class (eg, tweak\ | |
2461 | visibility or perform any other required target modifications).", | |
2462 | void, (tree type), | |
2463 | hook_void_tree) | |
2464 | ||
2465 | HOOK_VECTOR_END (cxx) | |
2466 | ||
2467 | /* Functions and data for emulated TLS support. */ | |
2468 | #undef HOOK_PREFIX | |
2469 | #define HOOK_PREFIX "TARGET_EMUTLS_" | |
2470 | HOOK_VECTOR (TARGET_EMUTLS, emutls) | |
2471 | ||
2472 | /* Name of the address and common functions. */ | |
2473 | DEFHOOKPOD | |
2474 | (get_address, | |
2475 | "", | |
2476 | const char *, "__builtin___emutls_get_address") | |
2477 | ||
2478 | DEFHOOKPOD | |
2479 | (register_common, | |
2480 | "", | |
2481 | const char *, "__builtin___emutls_register_common") | |
2482 | ||
2483 | /* Prefixes for proxy variable and template. */ | |
2484 | DEFHOOKPOD | |
2485 | (var_section, | |
2486 | "", | |
2487 | const char *, NULL) | |
2488 | ||
2489 | DEFHOOKPOD | |
2490 | (tmpl_section, | |
2491 | "", | |
2492 | const char *, NULL) | |
2493 | ||
2494 | /* Prefixes for proxy variable and template. */ | |
2495 | DEFHOOKPOD | |
2496 | (var_prefix, | |
2497 | "", | |
2498 | const char *, NULL) | |
2499 | ||
2500 | DEFHOOKPOD | |
2501 | (tmpl_prefix, | |
2502 | "", | |
2503 | const char *, NULL) | |
2504 | ||
2505 | /* Function to generate field definitions of the proxy variable. */ | |
2506 | DEFHOOK | |
2507 | (var_fields, | |
2508 | "", | |
2509 | tree, (tree type, tree *name), | |
2510 | default_emutls_var_fields) | |
2511 | ||
2512 | /* Function to initialize a proxy variable. */ | |
2513 | DEFHOOK | |
2514 | (var_init, | |
2515 | "", | |
2516 | tree, (tree var, tree decl, tree tmpl_addr), | |
2517 | default_emutls_var_init) | |
2518 | ||
2519 | /* Whether we are allowed to alter the usual alignment of the | |
2520 | proxy variable. */ | |
2521 | DEFHOOKPOD | |
2522 | (var_align_fixed, | |
2523 | "", | |
2524 | bool, false) | |
2525 | ||
2526 | /* Whether we can emit debug information for TLS vars. */ | |
2527 | DEFHOOKPOD | |
2528 | (debug_form_tls_address, | |
2529 | "", | |
2530 | bool, false) | |
2531 | ||
2532 | HOOK_VECTOR_END (emutls) | |
2533 | ||
2534 | #undef HOOK_PREFIX | |
2535 | #define HOOK_PREFIX "TARGET_OPTION_" | |
2536 | HOOK_VECTOR (TARGET_OPTION_HOOKS, target_option_hooks) | |
2537 | ||
2538 | /* Function to validate the attribute((option(...))) strings or NULL. If | |
2539 | the option is validated, it is assumed that DECL_FUNCTION_SPECIFIC will | |
2540 | be filled in in the function decl node. */ | |
2541 | DEFHOOK | |
2542 | (valid_attribute_p, | |
2543 | "", | |
2544 | bool, (tree fndecl, tree name, tree args, int flags), | |
2545 | default_target_option_valid_attribute_p) | |
2546 | ||
2547 | /* Function to save any extra target state in the target options structure. */ | |
2548 | DEFHOOK | |
2549 | (save, | |
2550 | "", | |
2551 | void, (struct cl_target_option *ptr), NULL) | |
2552 | ||
2553 | /* Function to restore any extra target state from the target options | |
2554 | structure. */ | |
2555 | DEFHOOK | |
2556 | (restore, | |
2557 | "", | |
2558 | void, (struct cl_target_option *ptr), NULL) | |
2559 | ||
2560 | /* Function to print any extra target state from the target options | |
2561 | structure. */ | |
2562 | DEFHOOK | |
2563 | (print, | |
2564 | "", | |
2565 | void, (FILE *file, int indent, struct cl_target_option *ptr), NULL) | |
2566 | ||
2567 | /* Function to parse arguments to be validated for #pragma option, and to | |
2568 | change the state if the options are valid. If the first argument is | |
2569 | NULL, the second argument specifies the default options to use. Return | |
2570 | true if the options are valid, and set the current state. */ | |
04f989af | 2571 | /* ??? The documentation in tm.texi is incomplete. */ |
2572 | DEFHOOK | |
202d6e5f | 2573 | (pragma_parse, |
2574 | "", | |
2575 | bool, (tree args, tree pop_target), | |
2576 | default_target_option_pragma_parse) | |
2577 | ||
2578 | /* Do option overrides for the target. */ | |
2579 | DEFHOOK | |
2580 | (override, | |
2581 | "", | |
2582 | void, (void), | |
4c834714 | 2583 | hook_void_void) |
202d6e5f | 2584 | |
02e53c17 | 2585 | /* Set default optimizations for the target. */ |
c17f64cc | 2586 | DEFHOOKPOD |
2587 | (optimization_table, | |
02e53c17 | 2588 | "", |
c17f64cc | 2589 | const struct default_options *, empty_optimization_table) |
02e53c17 | 2590 | |
686e2769 | 2591 | DEFHOOK |
2592 | (default_params, | |
2593 | "Set target-dependent default values for @option{--param} settings, using\ | |
2594 | calls to @code{set_default_param_value}.", | |
2595 | void, (void), | |
2596 | hook_void_void) | |
2597 | ||
cc07c468 | 2598 | DEFHOOK |
2599 | (init_struct, | |
2600 | "Set target-dependent initial values of fields in @var{opts}.", | |
2601 | void, (struct gcc_options *opts), | |
2602 | hook_void_gcc_optionsp) | |
2603 | ||
202d6e5f | 2604 | /* Function to determine if one function can inline another function. */ |
2605 | #undef HOOK_PREFIX | |
2606 | #define HOOK_PREFIX "TARGET_" | |
2607 | DEFHOOK | |
2608 | (can_inline_p, | |
2609 | "", | |
2610 | bool, (tree caller, tree callee), | |
2611 | default_target_can_inline_p) | |
2612 | ||
2613 | HOOK_VECTOR_END (target_option) | |
2614 | ||
2615 | /* For targets that need to mark extra registers as live on entry to | |
2616 | the function, they should define this target hook and set their | |
2617 | bits in the bitmap passed in. */ | |
2618 | DEFHOOK | |
2619 | (extra_live_on_entry, | |
2620 | "", | |
2621 | void, (bitmap regs), | |
2622 | hook_void_bitmap) | |
2623 | ||
cc7d6aed | 2624 | /* Determine the type of unwind info to emit for debugging. */ |
2625 | DEFHOOK | |
2626 | (debug_unwind_info, | |
2627 | "", | |
2628 | enum unwind_info_type, (void), | |
2629 | default_debug_unwind_info) | |
2630 | ||
2631 | /* Determine the type of unwind info to emit for exceptions. */ | |
2632 | DEFHOOK | |
2633 | (except_unwind_info, | |
2634 | "", | |
b213bf24 | 2635 | enum unwind_info_type, (struct gcc_options *opts), |
cc7d6aed | 2636 | default_except_unwind_info) |
2637 | ||
202d6e5f | 2638 | /* Leave the boolean fields at the end. */ |
2639 | ||
2640 | /* True if unwinding tables should be generated by default. */ | |
2641 | DEFHOOKPOD | |
2642 | (unwind_tables_default, | |
2643 | "", | |
2644 | bool, false) | |
2645 | ||
2646 | /* True if arbitrary sections are supported. */ | |
2647 | DEFHOOKPOD | |
2648 | (have_named_sections, | |
2649 | "", | |
2650 | bool, false) | |
2651 | ||
2652 | /* True if we can create zeroed data by switching to a BSS section | |
2653 | and then using ASM_OUTPUT_SKIP to allocate the space. */ | |
2654 | DEFHOOKPOD | |
2655 | (have_switchable_bss_sections, | |
2656 | "", | |
2657 | bool, false) | |
2658 | ||
2659 | /* True if "native" constructors and destructors are supported, | |
2660 | false if we're using collect2 for the job. */ | |
2661 | DEFHOOKPOD | |
2662 | (have_ctors_dtors, | |
2663 | "", | |
2664 | bool, false) | |
2665 | ||
2666 | /* True if thread-local storage is supported. */ | |
2667 | DEFHOOKPOD | |
2668 | (have_tls, | |
2669 | "", | |
2670 | bool, false) | |
2671 | ||
2672 | /* True if a small readonly data section is supported. */ | |
2673 | DEFHOOKPOD | |
2674 | (have_srodata_section, | |
2675 | "", | |
2676 | bool, false) | |
2677 | ||
2678 | /* True if EH frame info sections should be zero-terminated. */ | |
2679 | DEFHOOKPOD | |
2680 | (terminate_dw2_eh_frame_info, | |
2681 | "", | |
2682 | bool, true) | |
2683 | ||
2684 | /* True if #NO_APP should be emitted at the beginning of assembly output. */ | |
2685 | DEFHOOKPOD | |
2686 | (asm_file_start_app_off, | |
2687 | "", | |
2688 | bool, false) | |
2689 | ||
2690 | /* True if output_file_directive should be called for main_input_filename | |
2691 | at the beginning of assembly output. */ | |
2692 | DEFHOOKPOD | |
2693 | (asm_file_start_file_directive, | |
2694 | "", | |
2695 | bool, false) | |
2696 | ||
2697 | DEFHOOKPOD | |
2698 | (handle_pragma_extern_prefix, | |
2699 | "True if @code{#pragma extern_prefix} is to be supported.", | |
2700 | bool, 0) | |
2701 | ||
2702 | /* True if the target is allowed to reorder memory accesses unless | |
2703 | synchronization is explicitly requested. */ | |
2704 | DEFHOOKPOD | |
2705 | (relaxed_ordering, | |
2706 | "", | |
2707 | bool, false) | |
2708 | ||
2709 | /* Returns true if we should generate exception tables for use with the | |
2710 | ARM EABI. The effects the encoding of function exception specifications. */ | |
2711 | DEFHOOKPOD | |
2712 | (arm_eabi_unwinder, | |
2713 | "", | |
2714 | bool, false) | |
2715 | ||
1651aa77 | 2716 | DEFHOOKPOD |
2717 | (want_debug_pub_sections, | |
2718 | "True if the @code{.debug_pubtypes} and @code{.debug_pubnames} sections\ | |
2719 | should be emitted. These sections are not used on most platforms, and\ | |
2720 | in particular GDB does not use them.", | |
2721 | bool, false) | |
2722 | ||
202d6e5f | 2723 | /* Leave the boolean fields at the end. */ |
2724 | ||
2725 | /* Empty macro arguments are undefined in C90, so use an empty macro. */ | |
2726 | #define C90_EMPTY_HACK | |
2727 | /* Close the 'struct gcc_target' definition. */ | |
2728 | HOOK_VECTOR_END (C90_EMPTY_HACK) | |
2729 | ||
2730 | HOOK_VECTOR (TARGETCM_INITIALIZER, gcc_targetcm) | |
2731 | ||
2732 | /* Handle target switch CODE (an OPT_* value). ARG is the argument | |
2733 | passed to the switch; it is NULL if no argument was. VALUE is the | |
2734 | value of ARG if CODE specifies a UInteger option, otherwise it is | |
2735 | 1 if the positive form of the switch was used and 0 if the negative | |
2736 | form was. Return true if the switch was valid. */ | |
2737 | DEFHOOK | |
2738 | (handle_c_option, | |
2739 | "", | |
2740 | bool, (size_t code, const char *arg, int value), | |
2741 | default_handle_c_option) | |
2742 | ||
1f6616ee | 2743 | /* Targets may provide a string object type that can be used within |
2744 | and between C, C++, and Objective-C dialects. */ | |
2745 | ||
2746 | DEFHOOK | |
2747 | (objc_construct_string_object, | |
2748 | "Targets may provide a string object type that can be used within\ | |
2749 | and between C, C++ and their respective Objective-C dialects.\ | |
2750 | A string object might, for example, embed encoding and length information.\ | |
2751 | These objects are considered opaque to the compiler and handled as references.\ | |
2752 | An ideal implementation makes the composition of the string object\ | |
2753 | match that of the Objective-C @code{NSString} (@code{NXString} for GNUStep),\ | |
2754 | allowing efficient interworking between C-only and Objective-C code.\ | |
2755 | If a target implements string objects then this hook should return a\ | |
2756 | reference to such an object constructed from the normal `C' string\ | |
2757 | representation provided in @var{string}.\ | |
2758 | At present, the hook is used by Objective-C only, to obtain a\ | |
2759 | common-format string object when the target provides one.", | |
d4238e8b | 2760 | tree, (tree string), |
2761 | NULL) | |
1f6616ee | 2762 | |
2763 | DEFHOOK | |
2764 | (string_object_ref_type_p, | |
2765 | "If a target implements string objects then this hook should return\ | |
2766 | @code{true} if @var{stringref} is a valid reference to such an object.", | |
2767 | bool, (const_tree stringref), | |
2768 | hook_bool_const_tree_false) | |
d4238e8b | 2769 | |
1f6616ee | 2770 | DEFHOOK |
2771 | (check_string_object_format_arg, | |
2772 | "If a target implements string objects then this hook should should\ | |
2773 | provide a facility to check the function arguments in @var{args_list}\ | |
2774 | against the format specifiers in @var{format_arg} where the type of\ | |
2775 | @var{format_arg} is one recognized as a valid string reference type.", | |
2776 | void, (tree format_arg, tree args_list), | |
2777 | NULL) | |
2778 | ||
202d6e5f | 2779 | HOOK_VECTOR_END (C90_EMPTY_HACK) |