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38f8b050 JR |
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. "". | |
f6170701 JR |
66 | Sometimes, for some historic reason the function declaration |
67 | has to be documented differently | |
38f8b050 JR |
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 | ||
104 | /* Try to output the assembler code for an integer object whose | |
105 | value is given by X. SIZE is the size of the object in bytes and | |
106 | ALIGNED_P indicates whether it is aligned. Return true if | |
107 | successful. Only handles cases for which BYTE_OP, ALIGNED_OP | |
108 | and UNALIGNED_OP are NULL. */ | |
109 | DEFHOOK | |
110 | (integer, | |
111 | "", | |
112 | /* Only handles cases for which BYTE_OP, ALIGNED_OP and UNALIGNED_OP are | |
113 | NULL. */ | |
114 | bool, (rtx x, unsigned int size, int aligned_p), | |
115 | default_assemble_integer) | |
116 | ||
117 | /* Output code that will globalize a label. */ | |
118 | DEFHOOK | |
119 | (globalize_label, | |
120 | "", | |
121 | void, (FILE *stream, const char *name), | |
122 | default_globalize_label) | |
123 | ||
124 | /* Output code that will globalize a declaration. */ | |
125 | DEFHOOK | |
126 | (globalize_decl_name, | |
127 | "", | |
128 | void, (FILE *stream, tree decl), default_globalize_decl_name) | |
129 | ||
130 | /* Output code that will emit a label for unwind info, if this | |
131 | target requires such labels. Second argument is the decl the | |
132 | unwind info is associated with, third is a boolean: true if | |
133 | this is for exception handling, fourth is a boolean: true if | |
134 | this is only a placeholder for an omitted FDE. */ | |
135 | DEFHOOK | |
136 | (emit_unwind_label, | |
137 | "", | |
138 | void, (FILE *stream, tree decl, int for_eh, int empty), | |
139 | default_emit_unwind_label) | |
140 | ||
141 | /* Output code that will emit a label to divide up the exception table. */ | |
142 | DEFHOOK | |
143 | (emit_except_table_label, | |
144 | "", | |
145 | void, (FILE *stream), | |
146 | default_emit_except_table_label) | |
147 | ||
148 | /* Emit any directives required to unwind this instruction. */ | |
149 | DEFHOOK | |
150 | (unwind_emit, | |
151 | "", | |
152 | void, (FILE *stream, rtx insn), | |
153 | default_unwind_emit) | |
154 | ||
155 | /* Output an internal label. */ | |
156 | DEFHOOK | |
157 | (internal_label, | |
158 | "", | |
159 | void, (FILE *stream, const char *prefix, unsigned long labelno), | |
160 | default_internal_label) | |
161 | ||
162 | /* Output label for the constant. */ | |
163 | /* ??? The documentation uses a different name for the hook argument EXP. */ | |
164 | DEFHOOK_UNDOC | |
165 | (declare_constant_name, | |
166 | "", | |
167 | void, (FILE *file, const char *name, const_tree exp, HOST_WIDE_INT size), | |
168 | default_asm_declare_constant_name) | |
169 | ||
170 | /* Emit a ttype table reference to a typeinfo object. */ | |
171 | DEFHOOK | |
172 | (ttype, | |
173 | "", | |
174 | bool, (rtx sym), | |
175 | hook_bool_rtx_false) | |
176 | ||
177 | /* Emit an assembler directive to set visibility for the symbol | |
178 | associated with the tree decl. */ | |
179 | DEFHOOK | |
180 | (assemble_visibility, | |
181 | "", | |
182 | void, (tree decl, int visibility), | |
183 | default_assemble_visibility) | |
184 | ||
185 | /* Output the assembler code for entry to a function. */ | |
186 | DEFHOOK | |
187 | (function_prologue, | |
188 | "", | |
189 | void, (FILE *file, HOST_WIDE_INT size), | |
190 | default_function_pro_epilogue) | |
191 | ||
192 | /* Output the assembler code for end of prologue. */ | |
193 | DEFHOOK | |
194 | (function_end_prologue, | |
195 | "", | |
196 | void, (FILE *file), | |
197 | no_asm_to_stream) | |
198 | ||
199 | /* Output the assembler code for start of epilogue. */ | |
200 | DEFHOOK | |
201 | (function_begin_epilogue, | |
202 | "", | |
203 | void, (FILE *file), | |
204 | no_asm_to_stream) | |
205 | ||
206 | /* Output the assembler code for function exit. */ | |
207 | DEFHOOK | |
208 | (function_epilogue, | |
209 | "", | |
210 | void, (FILE *file, HOST_WIDE_INT size), | |
211 | default_function_pro_epilogue) | |
212 | ||
213 | /* Initialize target-specific sections. */ | |
214 | DEFHOOK | |
215 | (init_sections, | |
216 | "", | |
217 | void, (void), | |
218 | hook_void_void) | |
219 | ||
220 | /* Tell assembler to change to section NAME with attributes FLAGS. | |
221 | If DECL is non-NULL, it is the VAR_DECL or FUNCTION_DECL with | |
222 | which this section is associated. */ | |
223 | DEFHOOK | |
224 | (named_section, | |
225 | "", | |
226 | void, (const char *name, unsigned int flags, tree decl), | |
227 | default_no_named_section) | |
228 | ||
229 | /* Return a mask describing how relocations should be treated when | |
230 | selecting sections. Bit 1 should be set if global relocations | |
231 | should be placed in a read-write section; bit 0 should be set if | |
232 | local relocations should be placed in a read-write section. */ | |
233 | DEFHOOK | |
234 | (reloc_rw_mask, | |
235 | "", | |
236 | int, (void), | |
237 | default_reloc_rw_mask) | |
238 | ||
239 | /* Return a section for EXP. It may be a DECL or a constant. RELOC | |
240 | is nonzero if runtime relocations must be applied; bit 1 will be | |
241 | set if the runtime relocations require non-local name resolution. | |
242 | ALIGN is the required alignment of the data. */ | |
243 | DEFHOOK | |
244 | (select_section, | |
245 | "", | |
246 | section *, (tree exp, int reloc, unsigned HOST_WIDE_INT align), | |
247 | default_select_section) | |
248 | ||
249 | /* Return a section for X. MODE is X's mode and ALIGN is its | |
250 | alignment in bits. */ | |
251 | DEFHOOK | |
252 | (select_rtx_section, | |
253 | "", | |
254 | section *, (enum machine_mode mode, rtx x, unsigned HOST_WIDE_INT align), | |
255 | default_select_rtx_section) | |
256 | ||
257 | /* Select a unique section name for DECL. RELOC is the same as | |
258 | for SELECT_SECTION. */ | |
259 | DEFHOOK | |
260 | (unique_section, | |
261 | "", | |
262 | void, (tree decl, int reloc), | |
263 | default_unique_section) | |
264 | ||
265 | /* Return the readonly data section associated with function DECL. */ | |
266 | DEFHOOK | |
267 | (function_rodata_section, | |
268 | "", | |
269 | section *, (tree decl), | |
270 | default_function_rodata_section) | |
271 | ||
272 | /* Output a constructor for a symbol with a given priority. */ | |
273 | DEFHOOK | |
274 | (constructor, | |
275 | "", | |
276 | void, (rtx symbol, int priority), NULL) | |
277 | ||
278 | /* Output a destructor for a symbol with a given priority. */ | |
279 | DEFHOOK | |
280 | (destructor, | |
281 | "", | |
282 | void, (rtx symbol, int priority), NULL) | |
283 | ||
284 | /* Output the assembler code for a thunk function. THUNK_DECL is the | |
285 | declaration for the thunk function itself, FUNCTION is the decl for | |
286 | the target function. DELTA is an immediate constant offset to be | |
287 | added to THIS. If VCALL_OFFSET is nonzero, the word at | |
288 | *(*this + vcall_offset) should be added to THIS. */ | |
289 | DEFHOOK | |
290 | (output_mi_thunk, | |
291 | "", | |
292 | void, (FILE *file, tree thunk_fndecl, HOST_WIDE_INT delta, | |
293 | HOST_WIDE_INT vcall_offset, tree function), | |
294 | NULL) | |
295 | ||
296 | /* Determine whether output_mi_thunk would succeed. */ | |
297 | /* ??? Ideally, this hook would not exist, and success or failure | |
298 | would be returned from output_mi_thunk directly. But there's | |
299 | too much undo-able setup involved in invoking output_mi_thunk. | |
300 | Could be fixed by making output_mi_thunk emit rtl instead of | |
301 | text to the output file. */ | |
302 | DEFHOOK | |
303 | (can_output_mi_thunk, | |
304 | "", | |
305 | bool, (const_tree thunk_fndecl, HOST_WIDE_INT delta, | |
306 | HOST_WIDE_INT vcall_offset, const_tree function), | |
307 | hook_bool_const_tree_hwi_hwi_const_tree_false) | |
308 | ||
309 | /* Output any boilerplate text needed at the beginning of a | |
310 | translation unit. */ | |
311 | DEFHOOK | |
312 | (file_start, | |
313 | "", | |
314 | void, (void), | |
315 | default_file_start) | |
316 | ||
317 | /* Output any boilerplate text needed at the end of a translation unit. */ | |
318 | DEFHOOK | |
319 | (file_end, | |
320 | "", | |
321 | void, (void), | |
322 | hook_void_void) | |
323 | ||
324 | /* Output any boilerplate text needed at the beginning of an | |
325 | LTO output stream. */ | |
326 | DEFHOOK | |
327 | (lto_start, | |
328 | "", | |
329 | void, (void), | |
330 | hook_void_void) | |
331 | ||
332 | /* Output any boilerplate text needed at the end of an | |
333 | LTO output stream. */ | |
334 | DEFHOOK | |
335 | (lto_end, | |
336 | "", | |
337 | void, (void), | |
338 | hook_void_void) | |
339 | ||
340 | /* Output any boilerplace text needed at the end of a | |
341 | translation unit before debug and unwind info is emitted. */ | |
342 | DEFHOOK | |
343 | (code_end, | |
344 | "", | |
345 | void, (void), | |
346 | hook_void_void) | |
347 | ||
348 | /* Output an assembler pseudo-op to declare a library function name | |
349 | external. */ | |
350 | DEFHOOK | |
351 | (external_libcall, | |
352 | "", | |
353 | void, (rtx symref), | |
354 | default_external_libcall) | |
355 | ||
356 | /* Output an assembler directive to mark decl live. This instructs | |
357 | linker to not dead code strip this symbol. */ | |
358 | DEFHOOK | |
359 | (mark_decl_preserved, | |
360 | "", | |
361 | void, (const char *symbol), | |
362 | hook_void_constcharptr) | |
363 | ||
364 | /* Output a record of the command line switches that have been passed. */ | |
365 | DEFHOOK | |
366 | (record_gcc_switches, | |
367 | "", | |
368 | int, (print_switch_type type, const char *text), | |
369 | NULL) | |
370 | ||
371 | /* The name of the section that the example ELF implementation of | |
372 | record_gcc_switches will use to store the information. Target | |
373 | specific versions of record_gcc_switches may or may not use | |
374 | this information. */ | |
375 | DEFHOOKPOD | |
376 | (record_gcc_switches_section, | |
377 | "", | |
378 | const char *, ".GCC.command.line") | |
379 | ||
380 | /* Output the definition of a section anchor. */ | |
381 | DEFHOOK | |
382 | (output_anchor, | |
383 | "", | |
384 | void, (rtx x), | |
385 | default_asm_output_anchor) | |
386 | ||
387 | /* Output a DTP-relative reference to a TLS symbol. */ | |
388 | DEFHOOK | |
389 | (output_dwarf_dtprel, | |
390 | "", | |
391 | void, (FILE *file, int size, rtx x), | |
392 | NULL) | |
393 | ||
394 | /* Some target machines need to postscan each insn after it is output. */ | |
395 | DEFHOOK | |
396 | (final_postscan_insn, | |
397 | "", | |
398 | void, (FILE *file, rtx insn, rtx *opvec, int noperands), | |
399 | NULL) | |
400 | ||
401 | /* Emit the trampoline template. This hook may be NULL. */ | |
402 | DEFHOOK | |
403 | (trampoline_template, | |
404 | "", | |
405 | void, (FILE *f), | |
406 | NULL) | |
407 | ||
408 | /* ??? The TARGET_PRINT_OPERAND* hooks are part of the asm_out struct, | |
409 | even though that is not reflected in the macro name to override their | |
410 | initializers. */ | |
411 | #undef HOOK_PREFIX | |
412 | #define HOOK_PREFIX "TARGET_" | |
413 | ||
414 | /* Emit a machine-specific insn operand. */ | |
415 | /* ??? Documenting the argument types for this hook requires a GFDL | |
416 | license grant. Also, the documentation documents this as a macro, | |
417 | not a hook, and uses a different name for the hook argument FILE. */ | |
418 | DEFHOOK_UNDOC | |
419 | (print_operand, | |
420 | "", | |
421 | void, (FILE *file, rtx x, int code), | |
422 | default_print_operand) | |
423 | ||
424 | /* Emit a machine-specific memory address. */ | |
425 | /* ??? Documenting the argument types for this hook requires a GFDL | |
426 | license grant. Also, the documentation documents this as a macro, | |
427 | not a hook, and uses different hook argument names. */ | |
428 | DEFHOOK_UNDOC | |
429 | (print_operand_address, | |
430 | "", | |
431 | void, (FILE *file, rtx addr), | |
432 | default_print_operand_address) | |
433 | ||
434 | /* Determine whether CODE is a valid punctuation character for the | |
435 | `print_operand' hook. */ | |
436 | /* ??? Documenting the argument types for this hook requires a GFDL | |
437 | license grant. Also, the documentation documents this as a macro, | |
438 | not a hook. */ | |
439 | DEFHOOK_UNDOC | |
440 | (print_operand_punct_valid_p, | |
441 | "", | |
442 | bool ,(unsigned char code), | |
443 | default_print_operand_punct_valid_p) | |
444 | ||
445 | HOOK_VECTOR_END (asm_out) | |
446 | ||
447 | /* Functions relating to instruction scheduling. All of these | |
448 | default to null pointers, which haifa-sched.c looks for and handles. */ | |
449 | #undef HOOK_PREFIX | |
450 | #define HOOK_PREFIX "TARGET_SCHED_" | |
451 | HOOK_VECTOR (TARGET_SCHED, sched) | |
452 | ||
453 | /* Given the current cost, COST, of an insn, INSN, calculate and | |
454 | return a new cost based on its relationship to DEP_INSN through | |
455 | the dependence LINK. The default is to make no adjustment. */ | |
456 | DEFHOOK | |
457 | (adjust_cost, | |
458 | "", | |
459 | int, (rtx insn, rtx link, rtx dep_insn, int cost), NULL) | |
460 | ||
461 | /* Adjust the priority of an insn as you see fit. Returns the new priority. */ | |
462 | DEFHOOK | |
463 | (adjust_priority, | |
464 | "", | |
465 | int, (rtx insn, int priority), NULL) | |
466 | ||
467 | /* Function which returns the maximum number of insns that can be | |
468 | scheduled in the same machine cycle. This must be constant | |
469 | over an entire compilation. The default is 1. */ | |
470 | DEFHOOK | |
471 | (issue_rate, | |
472 | "", | |
473 | int, (void), NULL) | |
474 | ||
475 | /* Calculate how much this insn affects how many more insns we | |
476 | can emit this cycle. Default is they all cost the same. */ | |
477 | DEFHOOK | |
478 | (variable_issue, | |
479 | "", | |
480 | int, (FILE *file, int verbose, rtx insn, int more), NULL) | |
481 | ||
482 | /* Initialize machine-dependent scheduling code. */ | |
483 | DEFHOOK | |
484 | (init, | |
485 | "", | |
486 | void, (FILE *file, int verbose, int max_ready), NULL) | |
487 | ||
488 | /* Finalize machine-dependent scheduling code. */ | |
489 | DEFHOOK | |
490 | (finish, | |
491 | "", | |
492 | void, (FILE *file, int verbose), NULL) | |
493 | ||
494 | /* Initialize machine-dependent function wide scheduling code. */ | |
495 | DEFHOOK | |
496 | (init_global, | |
497 | "", | |
498 | void, (FILE *file, int verbose, int old_max_uid), NULL) | |
499 | ||
500 | /* Finalize machine-dependent function wide scheduling code. */ | |
501 | DEFHOOK | |
502 | (finish_global, | |
503 | "", | |
504 | void, (FILE *file, int verbose), NULL) | |
505 | ||
506 | /* Reorder insns in a machine-dependent fashion, in two different | |
507 | places. Default does nothing. */ | |
508 | DEFHOOK | |
509 | (reorder, | |
510 | "", | |
511 | int, (FILE *file, int verbose, rtx *ready, int *n_readyp, int clock), NULL) | |
512 | ||
513 | DEFHOOK | |
514 | (reorder2, | |
515 | "", | |
516 | int, (FILE *file, int verbose, rtx *ready, int *n_readyp, int clock), NULL) | |
517 | ||
518 | /* The following member value is a pointer to a function called | |
519 | after evaluation forward dependencies of insns in chain given | |
520 | by two parameter values (head and tail correspondingly). */ | |
521 | DEFHOOK | |
522 | (dependencies_evaluation_hook, | |
523 | "", | |
524 | void, (rtx head, rtx tail), NULL) | |
525 | ||
526 | /* The values of the following four members are pointers to functions | |
527 | used to simplify the automaton descriptions. dfa_pre_cycle_insn and | |
528 | dfa_post_cycle_insn give functions returning insns which are used to | |
529 | change the pipeline hazard recognizer state when the new simulated | |
530 | processor cycle correspondingly starts and finishes. The function | |
531 | defined by init_dfa_pre_cycle_insn and init_dfa_post_cycle_insn are | |
532 | used to initialize the corresponding insns. The default values of | |
533 | the members result in not changing the automaton state when the | |
534 | new simulated processor cycle correspondingly starts and finishes. */ | |
535 | ||
536 | DEFHOOK | |
537 | (init_dfa_pre_cycle_insn, | |
538 | "", | |
539 | void, (void), NULL) | |
540 | ||
541 | DEFHOOK | |
542 | (dfa_pre_cycle_insn, | |
543 | "", | |
544 | rtx, (void), NULL) | |
545 | ||
546 | DEFHOOK | |
547 | (init_dfa_post_cycle_insn, | |
548 | "", | |
549 | void, (void), NULL) | |
550 | ||
551 | DEFHOOK | |
552 | (dfa_post_cycle_insn, | |
553 | "", | |
554 | rtx, (void), NULL) | |
555 | ||
556 | /* The values of the following two members are pointers to | |
557 | functions used to simplify the automaton descriptions. | |
558 | dfa_pre_advance_cycle and dfa_post_advance_cycle are getting called | |
559 | immediately before and after cycle is advanced. */ | |
560 | ||
561 | DEFHOOK | |
562 | (dfa_pre_advance_cycle, | |
563 | "", | |
564 | void, (void), NULL) | |
565 | ||
566 | DEFHOOK | |
567 | (dfa_post_advance_cycle, | |
568 | "", | |
569 | void, (void), NULL) | |
570 | ||
571 | /* The following member value is a pointer to a function returning value | |
572 | which defines how many insns in queue `ready' will we try for | |
573 | multi-pass scheduling. If the member value is nonzero and the | |
574 | function returns positive value, the DFA based scheduler will make | |
575 | multi-pass scheduling for the first cycle. In other words, we will | |
576 | try to choose ready insn which permits to start maximum number of | |
577 | insns on the same cycle. */ | |
578 | DEFHOOK | |
579 | (first_cycle_multipass_dfa_lookahead, | |
580 | "", | |
581 | int, (void), NULL) | |
582 | ||
583 | /* The following member value is pointer to a function controlling | |
584 | what insns from the ready insn queue will be considered for the | |
585 | multipass insn scheduling. If the hook returns zero for insn | |
586 | passed as the parameter, the insn will be not chosen to be issued. */ | |
587 | DEFHOOK | |
588 | (first_cycle_multipass_dfa_lookahead_guard, | |
589 | "", | |
590 | int, (rtx insn), NULL) | |
591 | ||
592 | /* The following member value is pointer to a function called by | |
593 | the insn scheduler before issuing insn passed as the third | |
594 | parameter on given cycle. If the hook returns nonzero, the | |
595 | insn is not issued on given processors cycle. Instead of that, | |
596 | the processor cycle is advanced. If the value passed through | |
597 | the last parameter is zero, the insn ready queue is not sorted | |
598 | on the new cycle start as usually. The first parameter passes | |
599 | file for debugging output. The second one passes the scheduler | |
600 | verbose level of the debugging output. The forth and the fifth | |
601 | parameter values are correspondingly processor cycle on which | |
602 | the previous insn has been issued and the current processor cycle. */ | |
603 | /* ??? The documentation uses different names for dump_file, | |
604 | last_sched_cycle and cur_cycle. */ | |
605 | DEFHOOK_UNDOC | |
606 | (dfa_new_cycle, | |
607 | "", | |
608 | int, (FILE *dump_file, int verbose, rtx insn, int last_sched_cycle, | |
609 | int cur_cycle, int *sort_p), | |
610 | NULL) | |
611 | ||
612 | /* The following member value is a pointer to a function called by the | |
613 | insn scheduler. It should return true if there exists a dependence | |
614 | which is considered costly by the target, between the insn | |
615 | DEP_PRO (&_DEP), and the insn DEP_CON (&_DEP). The first parameter is | |
616 | the dep that represents the dependence between the two insns. The | |
617 | second argument is the cost of the dependence as estimated by | |
618 | the scheduler. The last argument is the distance in cycles | |
619 | between the already scheduled insn (first parameter) and the | |
620 | second insn (second parameter). */ | |
621 | DEFHOOK | |
622 | (is_costly_dependence, | |
623 | "", | |
624 | bool, (struct _dep *_dep, int cost, int distance), NULL) | |
625 | ||
626 | DEFHOOK_UNDOC | |
627 | (adjust_cost_2, | |
628 | "Given the current cost, @var{cost}, of an insn, @var{insn}, calculate and\ | |
629 | return a new cost based on its relationship to @var{dep_insn} through the\ | |
630 | dependence of weakness @var{dw}. The default is to make no adjustment.", | |
631 | int, (rtx insn, int dep_type1, rtx dep_insn, int cost, int dw), NULL) | |
632 | ||
633 | /* The following member value is a pointer to a function called | |
634 | by the insn scheduler. This hook is called to notify the backend | |
635 | that new instructions were emitted. */ | |
636 | DEFHOOK | |
637 | (h_i_d_extended, | |
638 | "", | |
639 | void, (void), NULL) | |
640 | ||
641 | /* Next 5 functions are for multi-point scheduling. */ | |
642 | ||
643 | /* Allocate memory for scheduler context. */ | |
644 | DEFHOOK | |
645 | (alloc_sched_context, | |
646 | "", | |
647 | void *, (void), NULL) | |
648 | ||
649 | /* Fills the context from the local machine scheduler context. */ | |
650 | DEFHOOK | |
651 | (init_sched_context, | |
652 | "", | |
653 | void, (void *tc, bool clean_p), NULL) | |
654 | ||
655 | /* Sets local machine scheduler context to a saved value. */ | |
656 | DEFHOOK | |
657 | (set_sched_context, | |
658 | "", | |
659 | void, (void *tc), NULL) | |
660 | ||
661 | /* Clears a scheduler context so it becomes like after init. */ | |
662 | DEFHOOK | |
663 | (clear_sched_context, | |
664 | "", | |
665 | void, (void *tc), NULL) | |
666 | ||
667 | /* Frees the scheduler context. */ | |
668 | DEFHOOK | |
669 | (free_sched_context, | |
670 | "", | |
671 | void, (void *tc), NULL) | |
672 | ||
673 | /* The following member value is a pointer to a function called | |
674 | by the insn scheduler. | |
675 | The first parameter is an instruction, the second parameter is the type | |
676 | of the requested speculation, and the third parameter is a pointer to the | |
677 | speculative pattern of the corresponding type (set if return value == 1). | |
678 | It should return | |
679 | -1, if there is no pattern, that will satisfy the requested speculation type, | |
680 | 0, if current pattern satisfies the requested speculation type, | |
681 | 1, if pattern of the instruction should be changed to the newly | |
682 | generated one. */ | |
683 | DEFHOOK | |
684 | (speculate_insn, | |
685 | "", | |
686 | int, (rtx insn, int request, rtx *new_pat), NULL) | |
687 | ||
688 | /* The following member value is a pointer to a function called | |
689 | by the insn scheduler. It should return true if the check instruction | |
690 | passed as the parameter needs a recovery block. */ | |
691 | DEFHOOK | |
692 | (needs_block_p, | |
693 | "", | |
694 | bool, (int dep_status), NULL) | |
695 | ||
696 | /* The following member value is a pointer to a function called | |
697 | by the insn scheduler. It should return a pattern for the check | |
698 | instruction. | |
699 | The first parameter is a speculative instruction, the second parameter | |
700 | is the label of the corresponding recovery block (or null, if it is a | |
701 | simple check). If the mutation of the check is requested (e.g. from | |
702 | ld.c to chk.a), the third parameter is true - in this case the first | |
703 | parameter is the previous check. */ | |
704 | DEFHOOK | |
705 | (gen_spec_check, | |
706 | "", | |
707 | rtx, (rtx insn, rtx label, int mutate_p), NULL) | |
708 | ||
709 | /* The following member value is a pointer to a function controlling | |
710 | what insns from the ready insn queue will be considered for the | |
711 | multipass insn scheduling. If the hook returns zero for the insn | |
712 | passed as the parameter, the insn will not be chosen to be | |
713 | issued. This hook is used to discard speculative instructions, | |
714 | that stand at the first position of the ready list. */ | |
715 | DEFHOOK | |
716 | (first_cycle_multipass_dfa_lookahead_guard_spec, | |
717 | "", | |
718 | bool, (const_rtx insn), NULL) | |
719 | ||
720 | /* The following member value is a pointer to a function that provides | |
721 | information about the speculation capabilities of the target. | |
722 | The parameter is a pointer to spec_info variable. */ | |
723 | DEFHOOK | |
724 | (set_sched_flags, | |
725 | "", | |
726 | void, (struct spec_info_def *spec_info), NULL) | |
727 | ||
728 | DEFHOOK_UNDOC | |
729 | (get_insn_spec_ds, | |
730 | "Return speculation types of instruction @var{insn}.", | |
731 | int, (rtx insn), NULL) | |
732 | ||
733 | DEFHOOK_UNDOC | |
734 | (get_insn_checked_ds, | |
735 | "Return speculation types that are checked for instruction @var{insn}", | |
736 | int, (rtx insn), NULL) | |
737 | ||
738 | DEFHOOK_UNDOC | |
739 | (skip_rtx_p, | |
740 | "Return bool if rtx scanning should just skip current layer and\ | |
741 | advance to the inner rtxes.", | |
742 | bool, (const_rtx x), NULL) | |
743 | ||
744 | /* The following member value is a pointer to a function that provides | |
745 | information about the target resource-based lower bound which is | |
746 | used by the swing modulo scheduler. The parameter is a pointer | |
747 | to ddg variable. */ | |
748 | DEFHOOK | |
749 | (sms_res_mii, | |
750 | "", | |
751 | int, (struct ddg *g), NULL) | |
752 | ||
753 | HOOK_VECTOR_END (sched) | |
754 | ||
755 | /* Functions relating to vectorization. */ | |
756 | #undef HOOK_PREFIX | |
757 | #define HOOK_PREFIX "TARGET_VECTORIZE_" | |
758 | HOOK_VECTOR (TARGET_VECTORIZE, vectorize) | |
759 | ||
760 | /* The following member value is a pointer to a function called | |
761 | by the vectorizer, and return the decl of the target builtin | |
762 | function. */ | |
763 | DEFHOOK | |
764 | (builtin_mask_for_load, | |
765 | "", | |
766 | tree, (void), NULL) | |
767 | ||
768 | /* Returns a code for builtin that realizes vectorized version of | |
769 | function, or NULL_TREE if not available. */ | |
770 | DEFHOOK | |
771 | (builtin_vectorized_function, | |
772 | "", | |
773 | tree, (tree fndecl, tree vec_type_out, tree vec_type_in), | |
774 | default_builtin_vectorized_function) | |
775 | ||
776 | /* Returns a function declaration for a builtin that realizes the | |
777 | vector conversion, or NULL_TREE if not available. */ | |
778 | DEFHOOK | |
779 | (builtin_conversion, | |
780 | "", | |
781 | tree, (unsigned code, tree dest_type, tree src_type), | |
782 | default_builtin_vectorized_conversion) | |
783 | ||
784 | /* Target builtin that implements vector widening multiplication. | |
785 | builtin_mul_widen_eve computes the element-by-element products | |
786 | for the even elements, and builtin_mul_widen_odd computes the | |
787 | element-by-element products for the odd elements. */ | |
788 | DEFHOOK | |
789 | (builtin_mul_widen_even, | |
790 | "", | |
791 | tree, (tree x), NULL) | |
792 | ||
793 | DEFHOOK | |
794 | (builtin_mul_widen_odd, | |
795 | "", | |
796 | tree, (tree x), NULL) | |
797 | ||
798 | /* Cost of different vector/scalar statements in vectorization cost model. */ | |
799 | DEFHOOK | |
800 | (builtin_vectorization_cost, | |
801 | "", | |
802 | int, (enum vect_cost_for_stmt type_of_cost), | |
803 | default_builtin_vectorization_cost) | |
804 | ||
805 | /* Return true if vector alignment is reachable (by peeling N | |
806 | iterations) for the given type. */ | |
807 | DEFHOOK | |
808 | (vector_alignment_reachable, | |
809 | "", | |
810 | bool, (const_tree type, bool is_packed), | |
811 | default_builtin_vector_alignment_reachable) | |
812 | ||
813 | /* Target builtin that implements vector permute. */ | |
814 | DEFHOOK | |
815 | (builtin_vec_perm, | |
816 | "", | |
817 | tree, (tree type, tree *mask_element_type), NULL) | |
818 | ||
819 | /* Return true if a vector created for builtin_vec_perm is valid. */ | |
820 | DEFHOOK | |
821 | (builtin_vec_perm_ok, | |
822 | "", | |
823 | bool, (tree vec_type, tree mask), | |
824 | hook_bool_tree_tree_true) | |
825 | ||
826 | /* Return true if the target supports misaligned store/load of a | |
827 | specific factor denoted in the third parameter. The last parameter | |
828 | is true if the access is defined in a packed struct. */ | |
829 | DEFHOOK | |
830 | (support_vector_misalignment, | |
831 | "", | |
832 | bool, | |
833 | (enum machine_mode mode, const_tree type, int misalignment, bool is_packed), | |
834 | default_builtin_support_vector_misalignment) | |
835 | ||
836 | HOOK_VECTOR_END (vectorize) | |
837 | ||
838 | #undef HOOK_PREFIX | |
839 | #define HOOK_PREFIX "TARGET_" | |
840 | ||
841 | /* The initial value of target_flags. */ | |
842 | DEFHOOKPOD | |
843 | (default_target_flags, | |
844 | "", | |
845 | int, 0) | |
846 | ||
847 | /* Allow target specific overriding of option settings after options have | |
848 | been changed by an attribute or pragma or when it is reset at the | |
849 | end of the code affected by an attribute or pragma. */ | |
850 | DEFHOOK | |
851 | (override_options_after_change, | |
852 | "", | |
853 | void, (void), | |
854 | hook_void_void) | |
855 | ||
856 | /* Handle target switch CODE (an OPT_* value). ARG is the argument | |
857 | passed to the switch; it is NULL if no argument was. VALUE is the | |
858 | value of ARG if CODE specifies a UInteger option, otherwise it is | |
859 | 1 if the positive form of the switch was used and 0 if the negative | |
860 | form was. Return true if the switch was valid. */ | |
861 | DEFHOOK | |
862 | (handle_option, | |
863 | "", | |
864 | bool, (size_t code, const char *arg, int value), | |
865 | hook_bool_size_t_constcharptr_int_true) | |
866 | ||
867 | /* ??? Documenting this hook requires a GFDL license grant. */ | |
868 | DEFHOOK_UNDOC | |
869 | (handle_ofast, | |
870 | "Handle target-specific parts of specifying -Ofast.", | |
871 | void, (void), | |
872 | hook_void_void) | |
873 | ||
874 | /* Display extra, target specific information in response to a | |
875 | --target-help switch. */ | |
876 | DEFHOOK | |
877 | (help, | |
878 | "", | |
879 | void, (void), NULL) | |
880 | ||
881 | DEFHOOK_UNDOC | |
882 | (eh_return_filter_mode, | |
883 | "Return machine mode for filter value.", | |
884 | enum machine_mode, (void), | |
885 | default_eh_return_filter_mode) | |
886 | ||
887 | /* Return machine mode for libgcc expanded cmp instructions. */ | |
888 | DEFHOOK | |
889 | (libgcc_cmp_return_mode, | |
890 | "", | |
891 | enum machine_mode, (void), | |
892 | default_libgcc_cmp_return_mode) | |
893 | ||
894 | /* Return machine mode for libgcc expanded shift instructions. */ | |
895 | DEFHOOK | |
896 | (libgcc_shift_count_mode, | |
897 | "", | |
898 | enum machine_mode, (void), | |
899 | default_libgcc_shift_count_mode) | |
900 | ||
901 | /* Return machine mode to be used for _Unwind_Word type. */ | |
902 | DEFHOOK | |
903 | (unwind_word_mode, | |
904 | "", | |
905 | enum machine_mode, (void), | |
906 | default_unwind_word_mode) | |
907 | ||
908 | /* Given two decls, merge their attributes and return the result. */ | |
909 | DEFHOOK | |
910 | (merge_decl_attributes, | |
911 | "", | |
912 | tree, (tree olddecl, tree newdecl), | |
913 | merge_decl_attributes) | |
914 | ||
915 | /* Given two types, merge their attributes and return the result. */ | |
916 | DEFHOOK | |
917 | (merge_type_attributes, | |
918 | "", | |
919 | tree, (tree type1, tree type2), | |
920 | merge_type_attributes) | |
921 | ||
922 | /* Table of machine attributes and functions to handle them. | |
923 | Ignored if NULL. */ | |
924 | DEFHOOKPOD | |
925 | (attribute_table, | |
926 | "", | |
927 | const struct attribute_spec *, NULL) | |
928 | ||
929 | /* Return true iff attribute NAME expects a plain identifier as its first | |
930 | argument. */ | |
931 | DEFHOOK | |
932 | (attribute_takes_identifier_p, | |
933 | "", | |
934 | bool, (const_tree name), | |
935 | hook_bool_const_tree_false) | |
936 | ||
937 | /* Return zero if the attributes on TYPE1 and TYPE2 are incompatible, | |
938 | one if they are compatible and two if they are nearly compatible | |
939 | (which causes a warning to be generated). */ | |
940 | DEFHOOK | |
941 | (comp_type_attributes, | |
942 | "", | |
943 | int, (const_tree type1, const_tree type2), | |
944 | hook_int_const_tree_const_tree_1) | |
945 | ||
946 | /* Assign default attributes to the newly defined TYPE. */ | |
947 | DEFHOOK | |
948 | (set_default_type_attributes, | |
949 | "", | |
950 | void, (tree type), | |
951 | hook_void_tree) | |
952 | ||
953 | /* Insert attributes on the newly created DECL. */ | |
954 | DEFHOOK | |
955 | (insert_attributes, | |
956 | "", | |
957 | void, (tree node, tree *attr_ptr), | |
958 | hook_void_tree_treeptr) | |
959 | ||
960 | /* Return true if FNDECL (which has at least one machine attribute) | |
961 | can be inlined despite its machine attributes, false otherwise. */ | |
962 | DEFHOOK | |
963 | (function_attribute_inlinable_p, | |
964 | "", | |
965 | bool, (const_tree fndecl), | |
966 | hook_bool_const_tree_false) | |
967 | ||
968 | /* Return true if bitfields in RECORD_TYPE should follow the | |
969 | Microsoft Visual C++ bitfield layout rules. */ | |
970 | DEFHOOK | |
971 | (ms_bitfield_layout_p, | |
972 | "", | |
973 | bool, (const_tree record_type), | |
974 | hook_bool_const_tree_false) | |
975 | ||
976 | /* True if the target supports decimal floating point. */ | |
977 | DEFHOOK | |
978 | (decimal_float_supported_p, | |
979 | "", | |
980 | bool, (void), | |
981 | default_decimal_float_supported_p) | |
982 | ||
983 | /* True if the target supports fixed-point. */ | |
984 | DEFHOOK | |
985 | (fixed_point_supported_p, | |
986 | "", | |
987 | bool, (void), | |
988 | default_fixed_point_supported_p) | |
989 | ||
990 | /* Return true if anonymous bitfields affect structure alignment. */ | |
991 | DEFHOOK | |
992 | (align_anon_bitfield, | |
993 | "", | |
994 | bool, (void), | |
995 | hook_bool_void_false) | |
996 | ||
997 | /* Return true if volatile bitfields should use the narrowest type possible. | |
998 | Return false if they should use the container type. */ | |
999 | DEFHOOK | |
1000 | (narrow_volatile_bitfield, | |
1001 | "", | |
1002 | bool, (void), | |
1003 | hook_bool_void_false) | |
1004 | ||
1005 | /* Set up target-specific built-in functions. */ | |
1006 | DEFHOOK | |
1007 | (init_builtins, | |
1008 | "", | |
1009 | void, (void), | |
1010 | hook_void_void) | |
1011 | ||
1012 | /* Initialize (if INITIALIZE_P is true) and return the target-specific | |
1013 | built-in function decl for CODE. | |
1014 | Return NULL if that is not possible. Return error_mark_node if CODE | |
1015 | is outside of the range of valid target builtin function codes. */ | |
1016 | DEFHOOK | |
1017 | (builtin_decl, | |
1018 | "", | |
1019 | tree, (unsigned code, bool initialize_p), NULL) | |
1020 | ||
1021 | /* Expand a target-specific builtin. */ | |
1022 | DEFHOOK | |
1023 | (expand_builtin, | |
1024 | "", | |
1025 | rtx, | |
1026 | (tree exp, rtx target, rtx subtarget, enum machine_mode mode, int ignore), | |
1027 | default_expand_builtin) | |
1028 | ||
1029 | /* Select a replacement for a target-specific builtin. This is done | |
1030 | *before* regular type checking, and so allows the target to | |
1031 | implement a crude form of function overloading. The result is a | |
1032 | complete expression that implements the operation. PARAMS really | |
1033 | has type VEC(tree,gc)*, but we don't want to include tree.h here. */ | |
1034 | /* ??? params is called differently in the documentation, and we can't | |
1035 | fix that because of GPL / GFDL incompatibility. */ | |
1036 | DEFHOOK_UNDOC | |
1037 | (resolve_overloaded_builtin, | |
1038 | "", | |
1039 | tree, (unsigned int /*location_t*/ loc, tree fndecl, void *params), NULL) | |
1040 | ||
1041 | /* Fold a target-specific builtin. */ | |
1042 | /* ??? The documentation uses a different name for nargs. */ | |
1043 | DEFHOOK_UNDOC | |
1044 | (fold_builtin, | |
1045 | "", | |
1046 | tree, (tree fndecl, int nargs, tree *argp, bool ignore), | |
1047 | hook_tree_tree_int_treep_bool_null) | |
1048 | ||
1049 | /* Returns a code for a target-specific builtin that implements | |
1050 | reciprocal of the function, or NULL_TREE if not available. */ | |
1051 | /* ??? The documentation uses a different name for tm_fn. */ | |
1052 | DEFHOOK_UNDOC | |
1053 | (builtin_reciprocal, | |
1054 | "", | |
1055 | tree, (unsigned fn, bool tm_fn, bool sqrt), | |
1056 | default_builtin_reciprocal) | |
1057 | ||
1058 | /* For a vendor-specific TYPE, return a pointer to a statically-allocated | |
1059 | string containing the C++ mangling for TYPE. In all other cases, return | |
1060 | NULL. */ | |
1061 | DEFHOOK | |
1062 | (mangle_type, | |
1063 | "", | |
1064 | const char *, (const_tree type), | |
1065 | hook_constcharptr_const_tree_null) | |
1066 | ||
1067 | /* Make any adjustments to libfunc names needed for this target. */ | |
1068 | DEFHOOK | |
1069 | (init_libfuncs, | |
1070 | "", | |
1071 | void, (void), | |
1072 | hook_void_void) | |
1073 | ||
1074 | /* Given a decl, a section name, and whether the decl initializer | |
1075 | has relocs, choose attributes for the section. */ | |
1076 | /* ??? Should be merged with SELECT_SECTION and UNIQUE_SECTION. */ | |
1077 | DEFHOOK | |
1078 | (section_type_flags, | |
1079 | "", | |
1080 | unsigned int, (tree decl, const char *name, int reloc), | |
1081 | default_section_type_flags) | |
1082 | ||
1083 | /* True if new jumps cannot be created, to replace existing ones or | |
1084 | not, at the current point in the compilation. */ | |
1085 | DEFHOOK | |
1086 | (cannot_modify_jumps_p, | |
1087 | "", | |
1088 | bool, (void), | |
1089 | hook_bool_void_false) | |
1090 | ||
1091 | /* Return a register class for which branch target register | |
1092 | optimizations should be applied. */ | |
1093 | DEFHOOK | |
1094 | (branch_target_register_class, | |
1095 | "", | |
1096 | enum reg_class, (void), | |
1097 | default_branch_target_register_class) | |
1098 | ||
1099 | /* Return true if branch target register optimizations should include | |
1100 | callee-saved registers that are not already live during the current | |
1101 | function. AFTER_PE_GEN is true if prologues and epilogues have | |
1102 | already been generated. */ | |
1103 | DEFHOOK | |
1104 | (branch_target_register_callee_saved, | |
1105 | "", | |
1106 | bool, (bool after_prologue_epilogue_gen), | |
1107 | hook_bool_bool_false) | |
1108 | ||
1109 | /* Return true if the target supports conditional execution. */ | |
1110 | DEFHOOK | |
1111 | (have_conditional_execution, | |
1112 | "", | |
1113 | bool, (void), | |
1114 | default_have_conditional_execution) | |
1115 | ||
1116 | /* Return a new value for loop unroll size. */ | |
1117 | DEFHOOK | |
1118 | (loop_unroll_adjust, | |
1119 | "", | |
1120 | unsigned, (unsigned nunroll, struct loop *loop), | |
1121 | NULL) | |
1122 | ||
1123 | /* True if the constant X cannot be placed in the constant pool. */ | |
1124 | DEFHOOK | |
1125 | (cannot_force_const_mem, | |
1126 | "", | |
1127 | bool, (rtx x), | |
1128 | hook_bool_rtx_false) | |
1129 | ||
1130 | DEFHOOK_UNDOC | |
1131 | (cannot_copy_insn_p, | |
1132 | "True if the insn @var{x} cannot be duplicated.", | |
1133 | bool, (rtx), NULL) | |
1134 | ||
1135 | /* True if X is considered to be commutative. */ | |
1136 | DEFHOOK | |
1137 | (commutative_p, | |
1138 | "", | |
1139 | bool, (const_rtx x, int outer_code), | |
1140 | hook_bool_const_rtx_commutative_p) | |
1141 | ||
1142 | /* True if ADDR is an address-expression whose effect depends | |
1143 | on the mode of the memory reference it is used in. */ | |
1144 | DEFHOOK | |
1145 | (mode_dependent_address_p, | |
1146 | "", | |
1147 | bool, (const_rtx addr), | |
1148 | default_mode_dependent_address_p) | |
1149 | ||
1150 | /* Given an invalid address X for a given machine mode, try machine-specific | |
1151 | ways to make it legitimate. Return X or an invalid address on failure. */ | |
1152 | DEFHOOK | |
1153 | (legitimize_address, | |
1154 | "", | |
1155 | rtx, (rtx x, rtx oldx, enum machine_mode mode), | |
1156 | default_legitimize_address) | |
1157 | ||
1158 | /* Given an address RTX, undo the effects of LEGITIMIZE_ADDRESS. */ | |
1159 | DEFHOOK | |
1160 | (delegitimize_address, | |
1161 | "", | |
1162 | rtx, (rtx x), | |
1163 | delegitimize_mem_from_attrs) | |
1164 | ||
1165 | /* Given an address RTX, say whether it is valid. */ | |
1166 | DEFHOOK | |
1167 | (legitimate_address_p, | |
1168 | "", | |
1169 | bool, (enum machine_mode mode, rtx x, bool strict), | |
1170 | default_legitimate_address_p) | |
1171 | ||
1172 | /* True if the given constant can be put into an object_block. */ | |
1173 | DEFHOOK | |
1174 | (use_blocks_for_constant_p, | |
1175 | "", | |
1176 | bool, (enum machine_mode mode, const_rtx x), | |
1177 | hook_bool_mode_const_rtx_false) | |
1178 | ||
1179 | /* The minimum and maximum byte offsets for anchored addresses. */ | |
1180 | DEFHOOKPOD | |
1181 | (min_anchor_offset, | |
1182 | "", | |
1183 | HOST_WIDE_INT, 0) | |
1184 | ||
1185 | DEFHOOKPOD | |
1186 | (max_anchor_offset, | |
1187 | "", | |
1188 | HOST_WIDE_INT, 0) | |
1189 | ||
1190 | /* True if section anchors can be used to access the given symbol. */ | |
1191 | DEFHOOK | |
1192 | (use_anchors_for_symbol_p, | |
1193 | "", | |
1194 | bool, (const_rtx x), | |
1195 | default_use_anchors_for_symbol_p) | |
1196 | ||
1197 | /* True if it is OK to do sibling call optimization for the specified | |
1198 | call expression EXP. DECL will be the called function, or NULL if | |
1199 | this is an indirect call. */ | |
1200 | DEFHOOK | |
1201 | (function_ok_for_sibcall, | |
1202 | "", | |
1203 | bool, (tree decl, tree exp), | |
1204 | hook_bool_tree_tree_false) | |
1205 | ||
1206 | /* Establish appropriate back-end context for processing the function | |
1207 | FNDECL. The argument might be NULL to indicate processing at top | |
1208 | level, outside of any function scope. */ | |
1209 | DEFHOOK | |
1210 | (set_current_function, | |
1211 | "", | |
1212 | void, (tree decl), hook_void_tree) | |
1213 | ||
1214 | /* True if EXP should be placed in a "small data" section. */ | |
1215 | DEFHOOK | |
1216 | (in_small_data_p, | |
1217 | "", | |
1218 | bool, (const_tree exp), | |
1219 | hook_bool_const_tree_false) | |
1220 | ||
1221 | /* True if EXP names an object for which name resolution must resolve | |
1222 | to the current executable or shared library. */ | |
1223 | DEFHOOK | |
1224 | (binds_local_p, | |
1225 | "", | |
1226 | bool, (const_tree exp), | |
1227 | default_binds_local_p) | |
1228 | ||
1229 | /* Modify and return the identifier of a DECL's external name, | |
1230 | originally identified by ID, as required by the target, | |
1231 | (eg, append @nn to windows32 stdcall function names). | |
1232 | The default is to return ID without modification. */ | |
1233 | DEFHOOK | |
1234 | (mangle_decl_assembler_name, | |
1235 | "", | |
1236 | tree, (tree decl, tree id), | |
1237 | default_mangle_decl_assembler_name) | |
1238 | ||
1239 | /* Do something target-specific to record properties of the DECL into | |
1240 | the associated SYMBOL_REF. */ | |
1241 | DEFHOOK | |
1242 | (encode_section_info, | |
1243 | "", | |
1244 | void, (tree decl, rtx rtl, int new_decl_p), | |
1245 | default_encode_section_info) | |
1246 | ||
1247 | /* Undo the effects of encode_section_info on the symbol string. */ | |
1248 | DEFHOOK | |
1249 | (strip_name_encoding, | |
1250 | "", | |
1251 | const char *, (const char *name), | |
1252 | default_strip_name_encoding) | |
1253 | ||
1254 | /* If shift optabs for MODE are known to always truncate the shift count, | |
1255 | return the mask that they apply. Return 0 otherwise. */ | |
1256 | DEFHOOK | |
1257 | (shift_truncation_mask, | |
1258 | "", | |
1259 | unsigned HOST_WIDE_INT, (enum machine_mode mode), | |
1260 | default_shift_truncation_mask) | |
1261 | ||
1262 | /* Return the number of divisions in the given MODE that should be present, | |
1263 | so that it is profitable to turn the division into a multiplication by | |
1264 | the reciprocal. */ | |
1265 | DEFHOOK | |
1266 | (min_divisions_for_recip_mul, | |
1267 | "", | |
1268 | unsigned int, (enum machine_mode mode), | |
1269 | default_min_divisions_for_recip_mul) | |
1270 | ||
1271 | /* If the representation of integral MODE is such that values are | |
1272 | always sign-extended to a wider mode MODE_REP then return | |
1273 | SIGN_EXTEND. Return UNKNOWN otherwise. */ | |
1274 | /* Note that the return type ought to be RTX_CODE, but that's not | |
1275 | necessarily defined at this point. */ | |
1276 | DEFHOOK | |
1277 | (mode_rep_extended, | |
1278 | "", | |
1279 | int, (enum machine_mode mode, enum machine_mode rep_mode), | |
1280 | default_mode_rep_extended) | |
1281 | ||
1282 | /* True if MODE is valid for a pointer in __attribute__((mode("MODE"))). */ | |
1283 | DEFHOOK | |
1284 | (valid_pointer_mode, | |
1285 | "", | |
1286 | bool, (enum machine_mode mode), | |
1287 | default_valid_pointer_mode) | |
1288 | ||
1289 | /* Support for named address spaces. */ | |
1290 | #undef HOOK_PREFIX | |
1291 | #define HOOK_PREFIX "TARGET_ADDR_SPACE_" | |
1292 | HOOK_VECTOR (TARGET_ADDR_SPACE_HOOKS, addr_space) | |
1293 | ||
1294 | /* MODE to use for a pointer into another address space. */ | |
1295 | DEFHOOK | |
1296 | (pointer_mode, | |
1297 | "", | |
1298 | enum machine_mode, (addr_space_t address_space), | |
1299 | default_addr_space_pointer_mode) | |
1300 | ||
1301 | /* MODE to use for an address in another address space. */ | |
1302 | DEFHOOK | |
1303 | (address_mode, | |
1304 | "", | |
1305 | enum machine_mode, (addr_space_t address_space), | |
1306 | default_addr_space_address_mode) | |
1307 | ||
1308 | /* True if MODE is valid for a pointer in __attribute__((mode("MODE"))) | |
1309 | in another address space. */ | |
1310 | DEFHOOK | |
1311 | (valid_pointer_mode, | |
1312 | "", | |
1313 | bool, (enum machine_mode mode, addr_space_t as), | |
1314 | default_addr_space_valid_pointer_mode) | |
1315 | ||
1316 | /* True if an address is a valid memory address to a given named address | |
1317 | space for a given mode. */ | |
1318 | DEFHOOK | |
1319 | (legitimate_address_p, | |
1320 | "", | |
1321 | bool, (enum machine_mode mode, rtx exp, bool strict, addr_space_t as), | |
1322 | default_addr_space_legitimate_address_p) | |
1323 | ||
1324 | /* Return an updated address to convert an invalid pointer to a named | |
1325 | address space to a valid one. If NULL_RTX is returned use machine | |
1326 | independent methods to make the address valid. */ | |
1327 | DEFHOOK | |
1328 | (legitimize_address, | |
1329 | "", | |
1330 | rtx, (rtx x, rtx oldx, enum machine_mode mode, addr_space_t as), | |
1331 | default_addr_space_legitimize_address) | |
1332 | ||
1333 | /* True if one named address space is a subset of another named address. */ | |
1334 | DEFHOOK | |
1335 | (subset_p, | |
1336 | "", | |
1337 | bool, (addr_space_t superset, addr_space_t subset), | |
1338 | default_addr_space_subset_p) | |
1339 | ||
1340 | /* Function to convert an rtl expression from one address space to another. */ | |
1341 | DEFHOOK | |
1342 | (convert, | |
1343 | "", | |
1344 | rtx, (rtx op, tree from_type, tree to_type), | |
1345 | default_addr_space_convert) | |
1346 | ||
1347 | HOOK_VECTOR_END (addr_space) | |
1348 | ||
1349 | #undef HOOK_PREFIX | |
1350 | #define HOOK_PREFIX "TARGET_" | |
1351 | ||
1352 | /* True if MODE is valid for the target. By "valid", we mean able to | |
1353 | be manipulated in non-trivial ways. In particular, this means all | |
1354 | the arithmetic is supported. */ | |
1355 | DEFHOOK | |
1356 | (scalar_mode_supported_p, | |
1357 | "", | |
1358 | bool, (enum machine_mode mode), | |
1359 | default_scalar_mode_supported_p) | |
1360 | ||
1361 | /* Similarly for vector modes. "Supported" here is less strict. At | |
1362 | least some operations are supported; need to check optabs or builtins | |
1363 | for further details. */ | |
1364 | DEFHOOK | |
1365 | (vector_mode_supported_p, | |
1366 | "", | |
1367 | bool, (enum machine_mode mode), | |
1368 | hook_bool_mode_false) | |
1369 | ||
1370 | /* Compute cost of moving data from a register of class FROM to one of | |
1371 | TO, using MODE. */ | |
1372 | DEFHOOK | |
1373 | (register_move_cost, | |
1374 | "", | |
1375 | int, (enum machine_mode mode, enum reg_class from, enum reg_class to), | |
1376 | default_register_move_cost) | |
1377 | ||
1378 | /* Compute cost of moving registers to/from memory. */ | |
1379 | /* ??? Documenting the argument types for this hook requires a GFDL | |
1380 | license grant. Also, the documentation uses a different name for RCLASS. */ | |
1381 | DEFHOOK_UNDOC | |
1382 | (memory_move_cost, | |
1383 | "", | |
1384 | int, (enum machine_mode mode, enum reg_class rclass, bool in), | |
1385 | default_memory_move_cost) | |
1386 | ||
1387 | /* True for MODE if the target expects that registers in this mode will | |
1388 | be allocated to registers in a small register class. The compiler is | |
1389 | allowed to use registers explicitly used in the rtl as spill registers | |
1390 | but it should prevent extending the lifetime of these registers. */ | |
1391 | DEFHOOK | |
1392 | (small_register_classes_for_mode_p, | |
1393 | "", | |
1394 | bool, (enum machine_mode mode), | |
1395 | hook_bool_mode_false) | |
1396 | ||
1397 | /* Compute a (partial) cost for rtx X. Return true if the complete | |
1398 | cost has been computed, and false if subexpressions should be | |
1399 | scanned. In either case, *TOTAL contains the cost result. */ | |
1400 | /* Note that CODE and OUTER_CODE ought to be RTX_CODE, but that's | |
1401 | not necessarily defined at this point. */ | |
1402 | DEFHOOK | |
1403 | (rtx_costs, | |
1404 | "", | |
1405 | bool, (rtx x, int code, int outer_code, int *total, bool speed), | |
1406 | hook_bool_rtx_int_int_intp_bool_false) | |
1407 | ||
1408 | /* Compute the cost of X, used as an address. Never called with | |
1409 | invalid addresses. */ | |
1410 | DEFHOOK | |
1411 | (address_cost, | |
1412 | "", | |
1413 | int, (rtx address, bool speed), | |
1414 | default_address_cost) | |
1415 | ||
1416 | /* Return where to allocate pseudo for a given hard register initial value. */ | |
1417 | DEFHOOK | |
1418 | (allocate_initial_value, | |
1419 | "", | |
1420 | rtx, (rtx hard_reg), NULL) | |
1421 | ||
1422 | /* Return nonzero if evaluating UNSPEC[_VOLATILE] X might cause a trap. | |
1423 | FLAGS has the same meaning as in rtlanal.c: may_trap_p_1. */ | |
1424 | DEFHOOK | |
1425 | (unspec_may_trap_p, | |
1426 | "", | |
1427 | int, (const_rtx x, unsigned flags), | |
1428 | default_unspec_may_trap_p) | |
1429 | ||
1430 | /* Given a register, this hook should return a parallel of registers | |
1431 | to represent where to find the register pieces. Define this hook | |
1432 | if the register and its mode are represented in Dwarf in | |
1433 | non-contiguous locations, or if the register should be | |
1434 | represented in more than one register in Dwarf. Otherwise, this | |
1435 | hook should return NULL_RTX. */ | |
1436 | DEFHOOK | |
1437 | (dwarf_register_span, | |
1438 | "", | |
1439 | rtx, (rtx reg), | |
1440 | hook_rtx_rtx_null) | |
1441 | ||
1442 | /* If expand_builtin_init_dwarf_reg_sizes needs to fill in table | |
1443 | entries not corresponding directly to registers below | |
1444 | FIRST_PSEUDO_REGISTER, this hook should generate the necessary | |
1445 | code, given the address of the table. */ | |
1446 | DEFHOOK | |
1447 | (init_dwarf_reg_sizes_extra, | |
1448 | "", | |
1449 | void, (tree address), | |
1450 | hook_void_tree) | |
1451 | ||
1452 | /* Fetch the fixed register(s) which hold condition codes, for | |
1453 | targets where it makes sense to look for duplicate assignments to | |
1454 | the condition codes. This should return true if there is such a | |
1455 | register, false otherwise. The arguments should be set to the | |
1456 | fixed register numbers. Up to two condition code registers are | |
1457 | supported. If there is only one for this target, the int pointed | |
1458 | at by the second argument should be set to -1. */ | |
1459 | DEFHOOK | |
1460 | (fixed_condition_code_regs, | |
1461 | "", | |
1462 | bool, (unsigned int *p1, unsigned int *p2), | |
1463 | hook_bool_uintp_uintp_false) | |
1464 | ||
1465 | /* If two condition code modes are compatible, return a condition | |
1466 | code mode which is compatible with both, such that a comparison | |
1467 | done in the returned mode will work for both of the original | |
1468 | modes. If the condition code modes are not compatible, return | |
1469 | VOIDmode. */ | |
1470 | DEFHOOK | |
1471 | (cc_modes_compatible, | |
1472 | "", | |
1473 | enum machine_mode, (enum machine_mode m1, enum machine_mode m2), | |
1474 | default_cc_modes_compatible) | |
1475 | ||
1476 | /* Do machine-dependent code transformations. Called just before | |
1477 | delayed-branch scheduling. */ | |
1478 | DEFHOOK | |
1479 | (machine_dependent_reorg, | |
1480 | "", | |
1481 | void, (void), NULL) | |
1482 | ||
1483 | /* Create the __builtin_va_list type. */ | |
1484 | DEFHOOK | |
1485 | (build_builtin_va_list, | |
1486 | "", | |
1487 | tree, (void), | |
1488 | std_build_builtin_va_list) | |
1489 | ||
1490 | /* Enumerate the va list variants. */ | |
1491 | /* ??? The documentation gets the type of ptree wrong. */ | |
1492 | DEFHOOK_UNDOC | |
1493 | (enum_va_list_p, | |
1494 | "", | |
1495 | int, (int idx, const char **pname, tree *ptree), | |
1496 | NULL) | |
1497 | ||
1498 | /* Get the cfun/fndecl calling abi __builtin_va_list type. */ | |
1499 | DEFHOOK | |
1500 | (fn_abi_va_list, | |
1501 | "", | |
1502 | tree, (tree fndecl), | |
1503 | std_fn_abi_va_list) | |
1504 | ||
1505 | /* Get the __builtin_va_list type dependent on input type. */ | |
1506 | DEFHOOK | |
1507 | (canonical_va_list_type, | |
1508 | "", | |
1509 | tree, (tree type), | |
1510 | std_canonical_va_list_type) | |
1511 | ||
1512 | /* ??? Documenting this hook requires a GFDL license grant. */ | |
1513 | DEFHOOK_UNDOC | |
1514 | (expand_builtin_va_start, | |
1515 | "Expand the @code{__builtin_va_start} builtin.", | |
1516 | void, (tree valist, rtx nextarg), NULL) | |
1517 | ||
1518 | /* Gimplifies a VA_ARG_EXPR. */ | |
1519 | DEFHOOK | |
1520 | (gimplify_va_arg_expr, | |
1521 | "", | |
1522 | tree, (tree valist, tree type, gimple_seq *pre_p, gimple_seq *post_p), | |
1523 | std_gimplify_va_arg_expr) | |
1524 | ||
1525 | /* Validity-checking routines for PCH files, target-specific. | |
1526 | get_pch_validity returns a pointer to the data to be stored, | |
1527 | and stores the size in its argument. pch_valid_p gets the same | |
1528 | information back and returns NULL if the PCH is valid, | |
1529 | or an error message if not. */ | |
1530 | DEFHOOK | |
1531 | (get_pch_validity, | |
1532 | "", | |
1533 | void *, (size_t *sz), | |
1534 | default_get_pch_validity) | |
1535 | ||
1536 | DEFHOOK | |
1537 | (pch_valid_p, | |
1538 | "", | |
1539 | const char *, (const void *data, size_t sz), | |
1540 | default_pch_valid_p) | |
1541 | ||
1542 | /* If nonnull, this function checks whether a PCH file with the | |
1543 | given set of target flags can be used. It returns NULL if so, | |
1544 | otherwise it returns an error message. */ | |
1545 | DEFHOOK | |
1546 | (check_pch_target_flags, | |
1547 | "", | |
1548 | const char *, (int pch_flags), NULL) | |
1549 | ||
1550 | /* True if the compiler should give an enum type only as many | |
1551 | bytes as it takes to represent the range of possible values of | |
1552 | that type. */ | |
1553 | DEFHOOK | |
1554 | (default_short_enums, | |
1555 | "", | |
1556 | bool, (void), | |
1557 | hook_bool_void_false) | |
1558 | ||
1559 | /* This target hook returns an rtx that is used to store the address | |
1560 | of the current frame into the built-in setjmp buffer. */ | |
1561 | DEFHOOK | |
1562 | (builtin_setjmp_frame_value, | |
1563 | "", | |
1564 | rtx, (void), | |
1565 | default_builtin_setjmp_frame_value) | |
1566 | ||
1567 | /* This target hook should add STRING_CST trees for any hard regs | |
1568 | the port wishes to automatically clobber for an asm. */ | |
1569 | DEFHOOK | |
1570 | (md_asm_clobbers, | |
1571 | "", | |
1572 | tree, (tree outputs, tree inputs, tree clobbers), | |
1573 | hook_tree_tree_tree_tree_3rd_identity) | |
1574 | ||
1575 | /* This target hook allows the backend to specify a calling convention | |
1576 | in the debug information. This function actually returns an | |
1577 | enum dwarf_calling_convention, but because of forward declarations | |
1578 | and not wanting to include dwarf2.h everywhere target.h is included | |
1579 | the function is being declared as an int. */ | |
1580 | DEFHOOK | |
1581 | (dwarf_calling_convention, | |
1582 | "", | |
1583 | int, (const_tree function), | |
1584 | hook_int_const_tree_0) | |
1585 | ||
1586 | /* This target hook allows the backend to emit frame-related insns that | |
1587 | contain UNSPECs or UNSPEC_VOLATILEs. The call frame debugging info | |
1588 | engine will invoke it on insns of the form | |
1589 | (set (reg) (unspec [...] UNSPEC_INDEX)) | |
1590 | and | |
1591 | (set (reg) (unspec_volatile [...] UNSPECV_INDEX)) | |
1592 | to let the backend emit the call frame instructions. */ | |
1593 | DEFHOOK | |
1594 | (dwarf_handle_frame_unspec, | |
1595 | "", | |
1596 | void, (const char *label, rtx pattern, int index), NULL) | |
1597 | ||
1598 | /* ??? Documenting this hook requires a GFDL license grant. */ | |
1599 | DEFHOOK_UNDOC | |
1600 | (stdarg_optimize_hook, | |
1601 | "Perform architecture specific checking of statements gimplified\ | |
1602 | from @code{VA_ARG_EXPR}. @var{stmt} is the statement. Returns true if\ | |
1603 | the statement doesn't need to be checked for @code{va_list} references.", | |
1604 | bool, (struct stdarg_info *ai, const_gimple stmt), NULL) | |
1605 | ||
1606 | /* This target hook allows the operating system to override the DECL | |
1607 | that represents the external variable that contains the stack | |
1608 | protection guard variable. The type of this DECL is ptr_type_node. */ | |
1609 | DEFHOOK | |
1610 | (stack_protect_guard, | |
1611 | "", | |
1612 | tree, (void), | |
1613 | default_stack_protect_guard) | |
1614 | ||
1615 | /* This target hook allows the operating system to override the CALL_EXPR | |
1616 | that is invoked when a check vs the guard variable fails. */ | |
1617 | DEFHOOK | |
1618 | (stack_protect_fail, | |
1619 | "", | |
1620 | tree, (void), | |
1621 | default_external_stack_protect_fail) | |
1622 | ||
1623 | /* Returns NULL if target supports the insn within a doloop block, | |
1624 | otherwise it returns an error message. */ | |
1625 | DEFHOOK | |
1626 | (invalid_within_doloop, | |
1627 | "", | |
1628 | const char *, (const_rtx insn), | |
1629 | default_invalid_within_doloop) | |
1630 | ||
1631 | DEFHOOK | |
1632 | (valid_dllimport_attribute_p, | |
1633 | "@var{decl} is a variable or function with @code{__attribute__((dllimport))}\ | |
1634 | specified. Use this hook if the target needs to add extra validation\ | |
1635 | checks to @code{handle_dll_attribute}.", | |
1636 | bool, (const_tree decl), | |
1637 | hook_bool_const_tree_true) | |
1638 | ||
1639 | /* If non-zero, align constant anchors in CSE to a multiple of this | |
1640 | value. */ | |
1641 | DEFHOOKPOD | |
1642 | (const_anchor, | |
1643 | "", | |
1644 | unsigned HOST_WIDE_INT, 0) | |
1645 | ||
1646 | /* Functions relating to calls - argument passing, returns, etc. */ | |
1647 | /* Members of struct call have no special macro prefix. */ | |
1648 | HOOK_VECTOR (TARGET_CALLS, calls) | |
1649 | ||
1650 | DEFHOOK | |
1651 | (promote_function_mode, | |
1652 | "", | |
1653 | enum machine_mode, (const_tree type, enum machine_mode mode, int *punsignedp, | |
1654 | const_tree funtype, int for_return), | |
1655 | default_promote_function_mode) | |
1656 | ||
1657 | DEFHOOK | |
1658 | (promote_prototypes, | |
1659 | "", | |
1660 | bool, (const_tree fntype), | |
1661 | hook_bool_const_tree_false) | |
1662 | ||
1663 | DEFHOOK | |
1664 | (struct_value_rtx, | |
1665 | "", | |
1666 | rtx, (tree fndecl, int incoming), | |
1667 | hook_rtx_tree_int_null) | |
1668 | DEFHOOK | |
1669 | (return_in_memory, | |
1670 | "", | |
1671 | bool, (const_tree type, const_tree fntype), | |
1672 | default_return_in_memory) | |
1673 | ||
1674 | DEFHOOK | |
1675 | (return_in_msb, | |
1676 | "", | |
1677 | bool, (const_tree type), | |
1678 | hook_bool_const_tree_false) | |
1679 | ||
1680 | /* Return true if a parameter must be passed by reference. TYPE may | |
1681 | be null if this is a libcall. CA may be null if this query is | |
1682 | from __builtin_va_arg. */ | |
1683 | /* ??? The documentation disagrees on the type of 'type'. */ | |
1684 | DEFHOOK_UNDOC | |
1685 | (pass_by_reference, | |
1686 | "", | |
1687 | bool, | |
1688 | (CUMULATIVE_ARGS *cum, enum machine_mode mode, const_tree type, bool named), | |
1689 | hook_bool_CUMULATIVE_ARGS_mode_tree_bool_false) | |
1690 | ||
1691 | DEFHOOK | |
1692 | (expand_builtin_saveregs, | |
1693 | "", | |
1694 | rtx, (void), | |
1695 | default_expand_builtin_saveregs) | |
1696 | ||
1697 | /* Returns pretend_argument_size. */ | |
1698 | DEFHOOK | |
1699 | (setup_incoming_varargs, | |
1700 | "", | |
1701 | void, (CUMULATIVE_ARGS *args_so_far, enum machine_mode mode, tree type, | |
1702 | int *pretend_args_size, int second_time), | |
1703 | default_setup_incoming_varargs) | |
1704 | ||
1705 | DEFHOOK | |
1706 | (strict_argument_naming, | |
1707 | "", | |
1708 | bool, (CUMULATIVE_ARGS *ca), | |
1709 | hook_bool_CUMULATIVE_ARGS_false) | |
1710 | ||
1711 | /* Returns true if we should use | |
1712 | targetm.calls.setup_incoming_varargs() and/or | |
1713 | targetm.calls.strict_argument_naming(). */ | |
1714 | DEFHOOK | |
1715 | (pretend_outgoing_varargs_named, | |
1716 | "", | |
1717 | bool, (CUMULATIVE_ARGS *ca), | |
1718 | default_pretend_outgoing_varargs_named) | |
1719 | ||
1720 | /* Given a complex type T, return true if a parameter of type T | |
1721 | should be passed as two scalars. */ | |
1722 | DEFHOOK | |
1723 | (split_complex_arg, | |
1724 | "", | |
1725 | bool, (const_tree type), NULL) | |
1726 | ||
1727 | /* Return true if type T, mode MODE, may not be passed in registers, | |
1728 | but must be passed on the stack. */ | |
1729 | /* ??? This predicate should be applied strictly after pass-by-reference. | |
1730 | Need audit to verify that this is the case. */ | |
1731 | DEFHOOK | |
1732 | (must_pass_in_stack, | |
1733 | "", | |
1734 | bool, (enum machine_mode mode, const_tree type), | |
1735 | must_pass_in_stack_var_size_or_pad) | |
1736 | ||
1737 | /* Return true if type TYPE, mode MODE, which is passed by reference, | |
1738 | should have the object copy generated by the callee rather than | |
1739 | the caller. It is never called for TYPE requiring constructors. */ | |
1740 | DEFHOOK | |
1741 | (callee_copies, | |
1742 | "", | |
1743 | bool, | |
1744 | (CUMULATIVE_ARGS *cum, enum machine_mode mode, const_tree type, bool named), | |
1745 | hook_bool_CUMULATIVE_ARGS_mode_tree_bool_false) | |
1746 | ||
1747 | /* Return zero for arguments passed entirely on the stack or entirely | |
1748 | in registers. If passed in both, return the number of bytes passed | |
1749 | in registers; the balance is therefore passed on the stack. */ | |
1750 | DEFHOOK | |
1751 | (arg_partial_bytes, | |
1752 | "", | |
1753 | int, (CUMULATIVE_ARGS *cum, enum machine_mode mode, tree type, bool named), | |
1754 | hook_int_CUMULATIVE_ARGS_mode_tree_bool_0) | |
1755 | ||
1756 | /* Update the state in CA to advance past an argument in the | |
1757 | argument list. The values MODE, TYPE, and NAMED describe that | |
1758 | argument. */ | |
1759 | /* ??? tm.texi still only describes the old macro. */ | |
1760 | DEFHOOK_UNDOC | |
1761 | (function_arg_advance, | |
1762 | "", | |
1763 | void, | |
1764 | (CUMULATIVE_ARGS *ca, enum machine_mode mode, const_tree type, bool named), | |
1765 | default_function_arg_advance) | |
1766 | ||
1767 | /* Return zero if the argument described by the state of CA should | |
1768 | be placed on a stack, or a hard register in which to store the | |
1769 | argument. The values MODE, TYPE, and NAMED describe that | |
1770 | argument. */ | |
1771 | /* ??? tm.texi still only describes the old macro. */ | |
1772 | DEFHOOK_UNDOC | |
1773 | (function_arg, | |
1774 | "", | |
1775 | rtx, (const CUMULATIVE_ARGS *ca, enum machine_mode mode, const_tree type, | |
1776 | bool named), | |
1777 | default_function_arg) | |
1778 | ||
1779 | /* Likewise, but for machines with register windows. Return the | |
1780 | location where the argument will appear to the callee. */ | |
1781 | /* ??? tm.texi still only describes the old macro. */ | |
1782 | DEFHOOK_UNDOC | |
1783 | (function_incoming_arg, | |
1784 | "", | |
1785 | rtx, (const CUMULATIVE_ARGS *ca, enum machine_mode mode, const_tree type, | |
1786 | bool named), | |
1787 | default_function_incoming_arg) | |
1788 | ||
1789 | /* Return the diagnostic message string if function without a prototype | |
1790 | is not allowed for this 'val' argument; NULL otherwise. */ | |
1791 | DEFHOOK | |
1792 | (invalid_arg_for_unprototyped_fn, | |
1793 | "", | |
1794 | const char *, (const_tree typelist, const_tree funcdecl, const_tree val), | |
1795 | hook_invalid_arg_for_unprototyped_fn) | |
1796 | ||
1797 | /* Return an rtx for the return value location of the function | |
1798 | specified by FN_DECL_OR_TYPE with a return type of RET_TYPE. */ | |
1799 | DEFHOOK | |
1800 | (function_value, | |
1801 | "", | |
1802 | rtx, (const_tree ret_type, const_tree fn_decl_or_type, bool outgoing), | |
1803 | default_function_value) | |
1804 | ||
1805 | /* Return the rtx for the result of a libcall of mode MODE, | |
1806 | calling the function FN_NAME. */ | |
1807 | DEFHOOK | |
1808 | (libcall_value, | |
1809 | "", | |
1810 | rtx, (enum machine_mode mode, const_rtx fun), | |
1811 | default_libcall_value) | |
1812 | ||
1813 | /* Return true if REGNO is a possible register number for | |
1814 | a function value as seen by the caller. */ | |
1815 | DEFHOOK | |
1816 | (function_value_regno_p, | |
1817 | "", | |
1818 | bool, (const unsigned int regno), | |
1819 | default_function_value_regno_p) | |
1820 | ||
1821 | /* ??? Documenting this hook requires a GFDL license grant. */ | |
1822 | DEFHOOK_UNDOC | |
1823 | (internal_arg_pointer, | |
1824 | "Return an rtx for the argument pointer incoming to the\ | |
1825 | current function.", | |
1826 | rtx, (void), | |
1827 | default_internal_arg_pointer) | |
1828 | ||
1829 | /* Update the current function stack boundary if needed. */ | |
1830 | DEFHOOK | |
1831 | (update_stack_boundary, | |
1832 | "", | |
1833 | void, (void), NULL) | |
1834 | ||
1835 | /* Handle stack alignment and return an rtx for Dynamic Realign | |
1836 | Argument Pointer if necessary. */ | |
1837 | DEFHOOK | |
1838 | (get_drap_rtx, | |
1839 | "", | |
1840 | rtx, (void), NULL) | |
1841 | ||
1842 | /* Return true if all function parameters should be spilled to the | |
1843 | stack. */ | |
1844 | DEFHOOK | |
1845 | (allocate_stack_slots_for_args, | |
1846 | "", | |
1847 | bool, (void), | |
1848 | hook_bool_void_true) | |
1849 | ||
1850 | /* Return an rtx for the static chain for FNDECL. If INCOMING_P is true, | |
1851 | then it should be for the callee; otherwise for the caller. */ | |
1852 | DEFHOOK | |
1853 | (static_chain, | |
1854 | "", | |
1855 | rtx, (const_tree fndecl, bool incoming_p), | |
1856 | default_static_chain) | |
1857 | ||
1858 | /* Fill in the trampoline at MEM with a call to FNDECL and a | |
1859 | static chain value of CHAIN. */ | |
1860 | DEFHOOK | |
1861 | (trampoline_init, | |
1862 | "", | |
1863 | void, (rtx m_tramp, tree fndecl, rtx static_chain), | |
1864 | default_trampoline_init) | |
1865 | ||
1866 | /* Adjust the address of the trampoline in a target-specific way. */ | |
1867 | DEFHOOK | |
1868 | (trampoline_adjust_address, | |
1869 | "", | |
1870 | rtx, (rtx addr), NULL) | |
1871 | ||
1872 | /* Return the number of bytes of its own arguments that a function | |
1873 | pops on returning, or 0 if the function pops no arguments and the | |
1874 | caller must therefore pop them all after the function returns. */ | |
1875 | /* ??? tm.texi has no types for the parameters. */ | |
1876 | DEFHOOK_UNDOC | |
1877 | (return_pops_args, | |
1878 | "", | |
1879 | int, (tree fundecl, tree funtype, int size), | |
1880 | default_return_pops_args) | |
1881 | ||
1882 | HOOK_VECTOR_END (calls) | |
1883 | ||
1884 | /* Return the diagnostic message string if conversion from FROMTYPE | |
1885 | to TOTYPE is not allowed, NULL otherwise. */ | |
1886 | DEFHOOK | |
1887 | (invalid_conversion, | |
1888 | "", | |
1889 | const char *, (const_tree fromtype, const_tree totype), | |
1890 | hook_constcharptr_const_tree_const_tree_null) | |
1891 | ||
1892 | /* Return the diagnostic message string if the unary operation OP is | |
1893 | not permitted on TYPE, NULL otherwise. */ | |
1894 | DEFHOOK | |
1895 | (invalid_unary_op, | |
1896 | "", | |
1897 | const char *, (int op, const_tree type), | |
1898 | hook_constcharptr_int_const_tree_null) | |
1899 | ||
1900 | /* Return the diagnostic message string if the binary operation OP | |
1901 | is not permitted on TYPE1 and TYPE2, NULL otherwise. */ | |
1902 | DEFHOOK | |
1903 | (invalid_binary_op, | |
1904 | "", | |
1905 | const char *, (int op, const_tree type1, const_tree type2), | |
1906 | hook_constcharptr_int_const_tree_const_tree_null) | |
1907 | ||
1908 | /* Return the diagnostic message string if TYPE is not valid as a | |
1909 | function parameter type, NULL otherwise. */ | |
1910 | DEFHOOK | |
1911 | (invalid_parameter_type, | |
1912 | "", | |
1913 | const char *, (const_tree type), | |
1914 | hook_constcharptr_const_tree_null) | |
1915 | ||
1916 | /* Return the diagnostic message string if TYPE is not valid as a | |
1917 | function return type, NULL otherwise. */ | |
1918 | DEFHOOK | |
1919 | (invalid_return_type, | |
1920 | "", | |
1921 | const char *, (const_tree type), | |
1922 | hook_constcharptr_const_tree_null) | |
1923 | ||
1924 | /* If values of TYPE are promoted to some other type when used in | |
1925 | expressions (analogous to the integer promotions), return that type, | |
1926 | or NULL_TREE otherwise. */ | |
1927 | DEFHOOK | |
1928 | (promoted_type, | |
1929 | "", | |
1930 | tree, (const_tree type), | |
1931 | hook_tree_const_tree_null) | |
1932 | ||
1933 | /* Convert EXPR to TYPE, if target-specific types with special conversion | |
1934 | rules are involved. Return the converted expression, or NULL to apply | |
1935 | the standard conversion rules. */ | |
1936 | DEFHOOK | |
1937 | (convert_to_type, | |
1938 | "", | |
1939 | tree, (tree type, tree expr), | |
1940 | hook_tree_tree_tree_null) | |
1941 | ||
1942 | /* Return the array of IRA cover classes for the current target. */ | |
1943 | DEFHOOK | |
1944 | (ira_cover_classes, | |
1945 | "", | |
1946 | const enum reg_class *, (void), | |
1947 | default_ira_cover_classes) | |
1948 | ||
1949 | /* Return the class for a secondary reload, and fill in extra information. */ | |
1950 | DEFHOOK | |
1951 | (secondary_reload, | |
1952 | "", | |
1953 | enum reg_class, | |
1954 | (bool in_p, rtx x, enum reg_class reload_class, enum machine_mode reload_mode, | |
1955 | secondary_reload_info *sri), | |
1956 | default_secondary_reload) | |
1957 | ||
1958 | /* This target hook allows the backend to perform additional | |
1959 | processing while initializing for variable expansion. */ | |
1960 | DEFHOOK | |
1961 | (expand_to_rtl_hook, | |
1962 | "", | |
1963 | void, (void), | |
1964 | hook_void_void) | |
1965 | ||
1966 | /* This target hook allows the backend to perform additional | |
1967 | instantiations on rtx that are not actually in insns yet, | |
1968 | but will be later. */ | |
1969 | DEFHOOK | |
1970 | (instantiate_decls, | |
1971 | "", | |
1972 | void, (void), | |
1973 | hook_void_void) | |
1974 | ||
1975 | /* Return true if is OK to use a hard register REGNO as scratch register | |
1976 | in peephole2. */ | |
1977 | DEFHOOK | |
1978 | (hard_regno_scratch_ok, | |
1979 | "", | |
1980 | bool, (unsigned int regno), | |
1981 | default_hard_regno_scratch_ok) | |
1982 | ||
1983 | /* Return the smallest number of different values for which it is best to | |
1984 | use a jump-table instead of a tree of conditional branches. */ | |
1985 | DEFHOOK | |
1986 | (case_values_threshold, | |
1987 | "", | |
1988 | unsigned int, (void), | |
1989 | default_case_values_threshold) | |
1990 | ||
1991 | /* Retutn true if a function must have and use a frame pointer. */ | |
1992 | DEFHOOK | |
1993 | (frame_pointer_required, | |
1994 | "", | |
1995 | bool, (void), | |
1996 | hook_bool_void_false) | |
1997 | ||
1998 | /* Returns true if the compiler is allowed to try to replace register number | |
1999 | from-reg with register number to-reg. */ | |
2000 | DEFHOOK | |
2001 | (can_eliminate, | |
2002 | "", | |
2003 | bool, (const int from_reg, const int to_reg), | |
2004 | hook_bool_const_int_const_int_true) | |
2005 | ||
2006 | /* Functions specific to the C family of frontends. */ | |
2007 | #undef HOOK_PREFIX | |
2008 | #define HOOK_PREFIX "TARGET_C_" | |
2009 | HOOK_VECTOR (TARGET_C, c) | |
2010 | ||
2011 | /* ??? Documenting this hook requires a GFDL license grant. */ | |
2012 | DEFHOOK_UNDOC | |
2013 | (mode_for_suffix, | |
2014 | "Return machine mode for non-standard constant literal suffix @var{c},\ | |
2015 | or VOIDmode if non-standard suffixes are unsupported.", | |
2016 | enum machine_mode, (char c), | |
2017 | default_mode_for_suffix) | |
2018 | ||
2019 | HOOK_VECTOR_END (c) | |
2020 | ||
2021 | /* Functions specific to the C++ frontend. */ | |
2022 | #undef HOOK_PREFIX | |
2023 | #define HOOK_PREFIX "TARGET_CXX_" | |
2024 | HOOK_VECTOR (TARGET_CXX, cxx) | |
2025 | ||
2026 | /* Return the integer type used for guard variables. */ | |
2027 | DEFHOOK | |
2028 | (guard_type, | |
2029 | "", | |
2030 | tree, (void), | |
2031 | default_cxx_guard_type) | |
2032 | ||
2033 | /* Return true if only the low bit of the guard should be tested. */ | |
2034 | DEFHOOK | |
2035 | (guard_mask_bit, | |
2036 | "", | |
2037 | bool, (void), | |
2038 | hook_bool_void_false) | |
2039 | ||
2040 | /* Returns the size of the array cookie for an array of type. */ | |
2041 | DEFHOOK | |
2042 | (get_cookie_size, | |
2043 | "", | |
2044 | tree, (tree type), | |
2045 | default_cxx_get_cookie_size) | |
2046 | ||
2047 | /* Returns true if the element size should be stored in the array cookie. */ | |
2048 | DEFHOOK | |
2049 | (cookie_has_size, | |
2050 | "", | |
2051 | bool, (void), | |
2052 | hook_bool_void_false) | |
2053 | ||
2054 | /* Allows backends to perform additional processing when | |
2055 | deciding if a class should be exported or imported. */ | |
2056 | DEFHOOK | |
2057 | (import_export_class, | |
2058 | "", | |
2059 | int, (tree type, int import_export), NULL) | |
2060 | ||
2061 | /* Returns true if constructors and destructors return "this". */ | |
2062 | DEFHOOK | |
2063 | (cdtor_returns_this, | |
2064 | "", | |
2065 | bool, (void), | |
2066 | hook_bool_void_false) | |
2067 | ||
2068 | /* Returns true if the key method for a class can be an inline | |
2069 | function, so long as it is not declared inline in the class | |
2070 | itself. Returning true is the behavior required by the Itanium C++ ABI. */ | |
2071 | DEFHOOK | |
2072 | (key_method_may_be_inline, | |
2073 | "", | |
2074 | bool, (void), | |
2075 | hook_bool_void_true) | |
2076 | ||
2077 | DEFHOOK | |
2078 | (determine_class_data_visibility, | |
2079 | "@var{decl} is a virtual table, virtual table table, typeinfo object,\ | |
2080 | or other similar implicit class data object that will be emitted with\ | |
2081 | external linkage in this translation unit. No ELF visibility has been\ | |
2082 | explicitly specified. If the target needs to specify a visibility\ | |
2083 | other than that of the containing class, use this hook to set\ | |
2084 | @code{DECL_VISIBILITY} and @code{DECL_VISIBILITY_SPECIFIED}.", | |
2085 | void, (tree decl), | |
2086 | hook_void_tree) | |
2087 | ||
2088 | /* Returns true (the default) if virtual tables and other | |
2089 | similar implicit class data objects are always COMDAT if they | |
2090 | have external linkage. If this hook returns false, then | |
2091 | class data for classes whose virtual table will be emitted in | |
2092 | only one translation unit will not be COMDAT. */ | |
2093 | DEFHOOK | |
2094 | (class_data_always_comdat, | |
2095 | "", | |
2096 | bool, (void), | |
2097 | hook_bool_void_true) | |
2098 | ||
2099 | /* Returns true (the default) if the RTTI for the basic types, | |
2100 | which is always defined in the C++ runtime, should be COMDAT; | |
2101 | false if it should not be COMDAT. */ | |
2102 | DEFHOOK | |
2103 | (library_rtti_comdat, | |
2104 | "", | |
2105 | bool, (void), | |
2106 | hook_bool_void_true) | |
2107 | ||
2108 | /* Returns true if __aeabi_atexit should be used to register static | |
2109 | destructors. */ | |
2110 | DEFHOOK | |
2111 | (use_aeabi_atexit, | |
2112 | "", | |
2113 | bool, (void), | |
2114 | hook_bool_void_false) | |
2115 | ||
2116 | /* Returns true if target may use atexit in the same manner as | |
2117 | __cxa_atexit to register static destructors. */ | |
2118 | DEFHOOK | |
2119 | (use_atexit_for_cxa_atexit, | |
2120 | "", | |
2121 | bool, (void), | |
2122 | hook_bool_void_false) | |
2123 | ||
2124 | DEFHOOK | |
2125 | (adjust_class_at_definition, | |
2126 | "@var{type} is a C++ class (i.e., RECORD_TYPE or UNION_TYPE) that has just\ | |
2127 | been defined. Use this hook to make adjustments to the class (eg, tweak\ | |
2128 | visibility or perform any other required target modifications).", | |
2129 | void, (tree type), | |
2130 | hook_void_tree) | |
2131 | ||
2132 | HOOK_VECTOR_END (cxx) | |
2133 | ||
2134 | /* Functions and data for emulated TLS support. */ | |
2135 | #undef HOOK_PREFIX | |
2136 | #define HOOK_PREFIX "TARGET_EMUTLS_" | |
2137 | HOOK_VECTOR (TARGET_EMUTLS, emutls) | |
2138 | ||
2139 | /* Name of the address and common functions. */ | |
2140 | DEFHOOKPOD | |
2141 | (get_address, | |
2142 | "", | |
2143 | const char *, "__builtin___emutls_get_address") | |
2144 | ||
2145 | DEFHOOKPOD | |
2146 | (register_common, | |
2147 | "", | |
2148 | const char *, "__builtin___emutls_register_common") | |
2149 | ||
2150 | /* Prefixes for proxy variable and template. */ | |
2151 | DEFHOOKPOD | |
2152 | (var_section, | |
2153 | "", | |
2154 | const char *, NULL) | |
2155 | ||
2156 | DEFHOOKPOD | |
2157 | (tmpl_section, | |
2158 | "", | |
2159 | const char *, NULL) | |
2160 | ||
2161 | /* Prefixes for proxy variable and template. */ | |
2162 | DEFHOOKPOD | |
2163 | (var_prefix, | |
2164 | "", | |
2165 | const char *, NULL) | |
2166 | ||
2167 | DEFHOOKPOD | |
2168 | (tmpl_prefix, | |
2169 | "", | |
2170 | const char *, NULL) | |
2171 | ||
2172 | /* Function to generate field definitions of the proxy variable. */ | |
2173 | DEFHOOK | |
2174 | (var_fields, | |
2175 | "", | |
2176 | tree, (tree type, tree *name), | |
2177 | default_emutls_var_fields) | |
2178 | ||
2179 | /* Function to initialize a proxy variable. */ | |
2180 | DEFHOOK | |
2181 | (var_init, | |
2182 | "", | |
2183 | tree, (tree var, tree decl, tree tmpl_addr), | |
2184 | default_emutls_var_init) | |
2185 | ||
2186 | /* Whether we are allowed to alter the usual alignment of the | |
2187 | proxy variable. */ | |
2188 | DEFHOOKPOD | |
2189 | (var_align_fixed, | |
2190 | "", | |
2191 | bool, false) | |
2192 | ||
2193 | /* Whether we can emit debug information for TLS vars. */ | |
2194 | DEFHOOKPOD | |
2195 | (debug_form_tls_address, | |
2196 | "", | |
2197 | bool, false) | |
2198 | ||
2199 | HOOK_VECTOR_END (emutls) | |
2200 | ||
2201 | #undef HOOK_PREFIX | |
2202 | #define HOOK_PREFIX "TARGET_OPTION_" | |
2203 | HOOK_VECTOR (TARGET_OPTION_HOOKS, target_option_hooks) | |
2204 | ||
2205 | /* Function to validate the attribute((option(...))) strings or NULL. If | |
2206 | the option is validated, it is assumed that DECL_FUNCTION_SPECIFIC will | |
2207 | be filled in in the function decl node. */ | |
2208 | DEFHOOK | |
2209 | (valid_attribute_p, | |
2210 | "", | |
2211 | bool, (tree fndecl, tree name, tree args, int flags), | |
2212 | default_target_option_valid_attribute_p) | |
2213 | ||
2214 | /* Function to save any extra target state in the target options structure. */ | |
2215 | DEFHOOK | |
2216 | (save, | |
2217 | "", | |
2218 | void, (struct cl_target_option *ptr), NULL) | |
2219 | ||
2220 | /* Function to restore any extra target state from the target options | |
2221 | structure. */ | |
2222 | DEFHOOK | |
2223 | (restore, | |
2224 | "", | |
2225 | void, (struct cl_target_option *ptr), NULL) | |
2226 | ||
2227 | /* Function to print any extra target state from the target options | |
2228 | structure. */ | |
2229 | DEFHOOK | |
2230 | (print, | |
2231 | "", | |
2232 | void, (FILE *file, int indent, struct cl_target_option *ptr), NULL) | |
2233 | ||
2234 | /* Function to parse arguments to be validated for #pragma option, and to | |
2235 | change the state if the options are valid. If the first argument is | |
2236 | NULL, the second argument specifies the default options to use. Return | |
2237 | true if the options are valid, and set the current state. */ | |
2238 | /* ??? The documentation disagrees on the signature of this hook. */ | |
2239 | DEFHOOK_UNDOC | |
2240 | (pragma_parse, | |
2241 | "", | |
2242 | bool, (tree args, tree pop_target), | |
2243 | default_target_option_pragma_parse) | |
2244 | ||
2245 | /* Do option overrides for the target. */ | |
2246 | DEFHOOK | |
2247 | (override, | |
2248 | "", | |
2249 | void, (void), | |
2250 | default_target_option_override) | |
2251 | ||
2252 | /* Function to determine if one function can inline another function. */ | |
2253 | #undef HOOK_PREFIX | |
2254 | #define HOOK_PREFIX "TARGET_" | |
2255 | DEFHOOK | |
2256 | (can_inline_p, | |
2257 | "", | |
2258 | bool, (tree caller, tree callee), | |
2259 | default_target_can_inline_p) | |
2260 | ||
2261 | HOOK_VECTOR_END (target_option) | |
2262 | ||
2263 | /* For targets that need to mark extra registers as live on entry to | |
2264 | the function, they should define this target hook and set their | |
2265 | bits in the bitmap passed in. */ | |
2266 | DEFHOOK | |
2267 | (extra_live_on_entry, | |
2268 | "", | |
2269 | void, (bitmap regs), | |
2270 | hook_void_bitmap) | |
2271 | ||
2272 | /* Leave the boolean fields at the end. */ | |
2273 | ||
2274 | /* True if unwinding tables should be generated by default. */ | |
2275 | DEFHOOKPOD | |
2276 | (unwind_tables_default, | |
2277 | "", | |
2278 | bool, false) | |
2279 | ||
2280 | /* True if arbitrary sections are supported. */ | |
2281 | DEFHOOKPOD | |
2282 | (have_named_sections, | |
2283 | "", | |
2284 | bool, false) | |
2285 | ||
2286 | /* True if we can create zeroed data by switching to a BSS section | |
2287 | and then using ASM_OUTPUT_SKIP to allocate the space. */ | |
2288 | DEFHOOKPOD | |
2289 | (have_switchable_bss_sections, | |
2290 | "", | |
2291 | bool, false) | |
2292 | ||
2293 | /* True if "native" constructors and destructors are supported, | |
2294 | false if we're using collect2 for the job. */ | |
2295 | DEFHOOKPOD | |
2296 | (have_ctors_dtors, | |
2297 | "", | |
2298 | bool, false) | |
2299 | ||
2300 | /* True if thread-local storage is supported. */ | |
2301 | DEFHOOKPOD | |
2302 | (have_tls, | |
2303 | "", | |
2304 | bool, false) | |
2305 | ||
2306 | /* True if a small readonly data section is supported. */ | |
2307 | DEFHOOKPOD | |
2308 | (have_srodata_section, | |
2309 | "", | |
2310 | bool, false) | |
2311 | ||
2312 | /* True if EH frame info sections should be zero-terminated. */ | |
2313 | DEFHOOKPOD | |
2314 | (terminate_dw2_eh_frame_info, | |
2315 | "", | |
2316 | bool, true) | |
2317 | ||
2318 | /* True if #NO_APP should be emitted at the beginning of assembly output. */ | |
2319 | DEFHOOKPOD | |
2320 | (asm_file_start_app_off, | |
2321 | "", | |
2322 | bool, false) | |
2323 | ||
2324 | /* True if output_file_directive should be called for main_input_filename | |
2325 | at the beginning of assembly output. */ | |
2326 | DEFHOOKPOD | |
2327 | (asm_file_start_file_directive, | |
2328 | "", | |
2329 | bool, false) | |
2330 | ||
2331 | DEFHOOKPOD | |
2332 | (handle_pragma_extern_prefix, | |
2333 | "True if @code{#pragma extern_prefix} is to be supported.", | |
2334 | bool, 0) | |
2335 | ||
2336 | /* True if the target is allowed to reorder memory accesses unless | |
2337 | synchronization is explicitly requested. */ | |
2338 | DEFHOOKPOD | |
2339 | (relaxed_ordering, | |
2340 | "", | |
2341 | bool, false) | |
2342 | ||
2343 | /* Returns true if we should generate exception tables for use with the | |
2344 | ARM EABI. The effects the encoding of function exception specifications. */ | |
2345 | DEFHOOKPOD | |
2346 | (arm_eabi_unwinder, | |
2347 | "", | |
2348 | bool, false) | |
2349 | ||
2350 | /* Leave the boolean fields at the end. */ | |
2351 | ||
2352 | /* Empty macro arguments are undefined in C90, so use an empty macro. */ | |
2353 | #define C90_EMPTY_HACK | |
2354 | /* Close the 'struct gcc_target' definition. */ | |
2355 | HOOK_VECTOR_END (C90_EMPTY_HACK) | |
2356 | ||
2357 | HOOK_VECTOR (TARGETCM_INITIALIZER, gcc_targetcm) | |
2358 | ||
2359 | /* Handle target switch CODE (an OPT_* value). ARG is the argument | |
2360 | passed to the switch; it is NULL if no argument was. VALUE is the | |
2361 | value of ARG if CODE specifies a UInteger option, otherwise it is | |
2362 | 1 if the positive form of the switch was used and 0 if the negative | |
2363 | form was. Return true if the switch was valid. */ | |
2364 | DEFHOOK | |
2365 | (handle_c_option, | |
2366 | "", | |
2367 | bool, (size_t code, const char *arg, int value), | |
2368 | default_handle_c_option) | |
2369 | ||
2370 | HOOK_VECTOR_END (C90_EMPTY_HACK) |