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