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ee890fe2 | 1 | /* Functions for generic Darwin as target machine for GNU C compiler. |
ae46c4e0 | 2 | Copyright (C) 1989, 1990, 1991, 1992, 1993, 2000, 2001, 2002 |
ee890fe2 SS |
3 | Free Software Foundation, Inc. |
4 | Contributed by Apple Computer Inc. | |
5 | ||
6 | This file is part of GNU CC. | |
7 | ||
8 | GNU CC is free software; you can redistribute it and/or modify | |
9 | it under the terms of the GNU General Public License as published by | |
10 | the Free Software Foundation; either version 2, or (at your option) | |
11 | any later version. | |
12 | ||
13 | GNU CC is distributed in the hope that it will be useful, | |
14 | but WITHOUT ANY WARRANTY; without even the implied warranty of | |
15 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
16 | GNU General Public License for more details. | |
17 | ||
18 | You should have received a copy of the GNU General Public License | |
19 | along with GNU CC; see the file COPYING. If not, write to | |
20 | the Free Software Foundation, 59 Temple Place - Suite 330, | |
21 | Boston, MA 02111-1307, USA. */ | |
22 | ||
23 | #include "config.h" | |
24 | #include "system.h" | |
25 | #include "rtl.h" | |
26 | #include "regs.h" | |
27 | #include "hard-reg-set.h" | |
28 | #include "real.h" | |
29 | #include "insn-config.h" | |
30 | #include "conditions.h" | |
31 | #include "insn-flags.h" | |
32 | #include "output.h" | |
33 | #include "insn-attr.h" | |
34 | #include "flags.h" | |
35 | #include "tree.h" | |
36 | #include "expr.h" | |
37 | #include "reload.h" | |
ee890fe2 SS |
38 | #include "function.h" |
39 | #include "ggc.h" | |
3ac88239 | 40 | #include "langhooks.h" |
ee890fe2 SS |
41 | #include "darwin-protos.h" |
42 | ||
43 | extern void machopic_output_stub PARAMS ((FILE *, const char *, const char *)); | |
44 | ||
45 | static int machopic_data_defined_p PARAMS ((const char *)); | |
df56a27f | 46 | static void update_non_lazy_ptrs PARAMS ((const char *)); |
4e08ba6c | 47 | static void update_stubs PARAMS ((const char *)); |
ee890fe2 | 48 | |
ee890fe2 SS |
49 | int |
50 | name_needs_quotes (name) | |
51 | const char *name; | |
52 | { | |
53 | int c; | |
54 | while ((c = *name++) != '\0') | |
0df6c2c7 | 55 | if (! ISIDNUM (c)) |
ee890fe2 SS |
56 | return 1; |
57 | return 0; | |
58 | } | |
59 | ||
60 | /* | |
61 | * flag_pic = 1 ... generate only indirections | |
62 | * flag_pic = 2 ... generate indirections and pure code | |
63 | */ | |
64 | ||
65 | /* This module assumes that (const (symbol_ref "foo")) is a legal pic | |
66 | reference, which will not be changed. */ | |
67 | ||
e2500fed | 68 | static GTY(()) tree machopic_defined_list; |
ee890fe2 SS |
69 | |
70 | enum machopic_addr_class | |
71 | machopic_classify_ident (ident) | |
72 | tree ident; | |
73 | { | |
74 | const char *name = IDENTIFIER_POINTER (ident); | |
75 | int lprefix = (((name[0] == '*' || name[0] == '&') | |
76 | && (name[1] == 'L' || (name[1] == '"' && name[2] == 'L'))) | |
77 | || ( name[0] == '_' | |
78 | && name[1] == 'O' | |
79 | && name[2] == 'B' | |
80 | && name[3] == 'J' | |
81 | && name[4] == 'C' | |
82 | && name[5] == '_')); | |
df56a27f | 83 | tree temp; |
ee890fe2 | 84 | |
df56a27f | 85 | if (name[0] != '!') |
ee890fe2 | 86 | { |
df56a27f | 87 | /* Here if no special encoding to be found. */ |
ee890fe2 SS |
88 | if (lprefix) |
89 | { | |
90 | const char *name = IDENTIFIER_POINTER (ident); | |
91 | int len = strlen (name); | |
92 | ||
93 | if ((len > 5 && !strcmp (name + len - 5, "$stub")) | |
94 | || (len > 6 && !strcmp (name + len - 6, "$stub\""))) | |
95 | return MACHOPIC_DEFINED_FUNCTION; | |
96 | return MACHOPIC_DEFINED_DATA; | |
97 | } | |
98 | ||
99 | for (temp = machopic_defined_list; | |
100 | temp != NULL_TREE; | |
101 | temp = TREE_CHAIN (temp)) | |
102 | { | |
103 | if (ident == TREE_VALUE (temp)) | |
104 | return MACHOPIC_DEFINED_DATA; | |
105 | } | |
106 | ||
107 | if (TREE_ASM_WRITTEN (ident)) | |
108 | return MACHOPIC_DEFINED_DATA; | |
109 | ||
110 | return MACHOPIC_UNDEFINED; | |
111 | } | |
112 | ||
df56a27f SS |
113 | else if (name[1] == 'D') |
114 | return MACHOPIC_DEFINED_DATA; | |
ee890fe2 | 115 | |
df56a27f SS |
116 | else if (name[1] == 'T') |
117 | return MACHOPIC_DEFINED_FUNCTION; | |
ee890fe2 | 118 | |
b7fb9feb TC |
119 | /* It is possible that someone is holding a "stale" name, which has |
120 | since been defined. See if there is a "defined" name (i.e, | |
121 | different from NAME only in having a '!D_' or a '!T_' instead of | |
122 | a '!d_' or '!t_' prefix) in the identifier hash tables. If so, say | |
123 | that this identifier is defined. */ | |
124 | else if (name[1] == 'd' || name[1] == 't') | |
125 | { | |
126 | char *new_name; | |
127 | new_name = (char *)alloca (strlen (name) + 1); | |
128 | strcpy (new_name, name); | |
129 | new_name[1] = (name[1] == 'd') ? 'D' : 'T'; | |
130 | if (maybe_get_identifier (new_name) != NULL) | |
131 | return (name[1] == 'd') ? MACHOPIC_DEFINED_DATA | |
132 | : MACHOPIC_DEFINED_FUNCTION; | |
133 | } | |
134 | ||
ee890fe2 SS |
135 | for (temp = machopic_defined_list; temp != NULL_TREE; temp = TREE_CHAIN (temp)) |
136 | { | |
137 | if (ident == TREE_VALUE (temp)) | |
138 | { | |
df56a27f | 139 | if (name[1] == 'T') |
ee890fe2 SS |
140 | return MACHOPIC_DEFINED_FUNCTION; |
141 | else | |
142 | return MACHOPIC_DEFINED_DATA; | |
143 | } | |
144 | } | |
145 | ||
df56a27f | 146 | if (name[1] == 't' || name[1] == 'T') |
ee890fe2 SS |
147 | { |
148 | if (lprefix) | |
149 | return MACHOPIC_DEFINED_FUNCTION; | |
150 | else | |
151 | return MACHOPIC_UNDEFINED_FUNCTION; | |
152 | } | |
153 | else | |
154 | { | |
155 | if (lprefix) | |
156 | return MACHOPIC_DEFINED_DATA; | |
157 | else | |
158 | return MACHOPIC_UNDEFINED_DATA; | |
159 | } | |
160 | } | |
161 | ||
162 | ||
163 | enum machopic_addr_class | |
164 | machopic_classify_name (name) | |
165 | const char *name; | |
166 | { | |
167 | return machopic_classify_ident (get_identifier (name)); | |
168 | } | |
169 | ||
170 | int | |
171 | machopic_ident_defined_p (ident) | |
172 | tree ident; | |
173 | { | |
174 | switch (machopic_classify_ident (ident)) | |
175 | { | |
176 | case MACHOPIC_UNDEFINED: | |
177 | case MACHOPIC_UNDEFINED_DATA: | |
178 | case MACHOPIC_UNDEFINED_FUNCTION: | |
179 | return 0; | |
180 | default: | |
181 | return 1; | |
182 | } | |
183 | } | |
184 | ||
185 | static int | |
186 | machopic_data_defined_p (name) | |
187 | const char *name; | |
188 | { | |
189 | switch (machopic_classify_ident (get_identifier (name))) | |
190 | { | |
191 | case MACHOPIC_DEFINED_DATA: | |
192 | return 1; | |
193 | default: | |
194 | return 0; | |
195 | } | |
196 | } | |
197 | ||
198 | int | |
199 | machopic_name_defined_p (name) | |
200 | const char *name; | |
201 | { | |
202 | return machopic_ident_defined_p (get_identifier (name)); | |
203 | } | |
204 | ||
205 | void | |
206 | machopic_define_ident (ident) | |
207 | tree ident; | |
208 | { | |
209 | if (!machopic_ident_defined_p (ident)) | |
210 | machopic_defined_list = | |
211 | tree_cons (NULL_TREE, ident, machopic_defined_list); | |
212 | } | |
213 | ||
214 | void | |
215 | machopic_define_name (name) | |
216 | const char *name; | |
217 | { | |
218 | machopic_define_ident (get_identifier (name)); | |
219 | } | |
220 | ||
ee890fe2 SS |
221 | /* This is a static to make inline functions work. The rtx |
222 | representing the PIC base symbol always points to here. */ | |
223 | ||
224 | static char function_base[32]; | |
225 | ||
226 | static int current_pic_label_num; | |
227 | ||
92c1a778 | 228 | const char * |
ee890fe2 SS |
229 | machopic_function_base_name () |
230 | { | |
c0cbc013 | 231 | static const char *name = NULL; |
ee890fe2 SS |
232 | static const char *current_name; |
233 | ||
234 | current_name = IDENTIFIER_POINTER (DECL_ASSEMBLER_NAME (current_function_decl)); | |
235 | ||
236 | if (name != current_name) | |
237 | { | |
238 | current_function_uses_pic_offset_table = 1; | |
239 | ||
240 | /* Save mucho space and time. Some of the C++ mangled names are over | |
241 | 700 characters long! Note that we produce a label containing a '-' | |
242 | if the function we're compiling is an Objective-C method, as evinced | |
243 | by the incredibly scientific test below. This is because code in | |
244 | rs6000.c makes the same ugly test when loading the PIC reg. */ | |
245 | ||
246 | ++current_pic_label_num; | |
247 | if (*current_name == '+' || *current_name == '-') | |
248 | sprintf (function_base, "*\"L-%d$pb\"", current_pic_label_num); | |
249 | else | |
250 | sprintf (function_base, "*L%d$pb", current_pic_label_num); | |
251 | ||
252 | name = current_name; | |
253 | } | |
254 | ||
255 | return function_base; | |
256 | } | |
257 | ||
e2500fed | 258 | static GTY(()) tree machopic_non_lazy_pointers; |
ee890fe2 SS |
259 | |
260 | /* Return a non-lazy pointer name corresponding to the given name, | |
261 | either by finding it in our list of pointer names, or by generating | |
262 | a new one. */ | |
263 | ||
92c1a778 | 264 | const char * |
ee890fe2 SS |
265 | machopic_non_lazy_ptr_name (name) |
266 | const char *name; | |
267 | { | |
df56a27f | 268 | char *temp_name; |
ee890fe2 SS |
269 | tree temp, ident = get_identifier (name); |
270 | ||
271 | for (temp = machopic_non_lazy_pointers; | |
272 | temp != NULL_TREE; | |
273 | temp = TREE_CHAIN (temp)) | |
274 | { | |
275 | if (ident == TREE_VALUE (temp)) | |
276 | return IDENTIFIER_POINTER (TREE_PURPOSE (temp)); | |
277 | } | |
278 | ||
772c5265 | 279 | name = darwin_strip_name_encoding (name); |
df56a27f SS |
280 | |
281 | /* Try again, but comparing names this time. */ | |
282 | for (temp = machopic_non_lazy_pointers; | |
283 | temp != NULL_TREE; | |
284 | temp = TREE_CHAIN (temp)) | |
285 | { | |
286 | if (TREE_VALUE (temp)) | |
287 | { | |
288 | temp_name = IDENTIFIER_POINTER (TREE_VALUE (temp)); | |
772c5265 | 289 | temp_name = darwin_strip_name_encoding (temp_name); |
df56a27f SS |
290 | if (strcmp (name, temp_name) == 0) |
291 | return IDENTIFIER_POINTER (TREE_PURPOSE (temp)); | |
292 | } | |
293 | } | |
294 | ||
ee890fe2 SS |
295 | { |
296 | char *buffer; | |
297 | tree ptr_name; | |
298 | ||
299 | buffer = alloca (strlen (name) + 20); | |
300 | ||
301 | strcpy (buffer, "&L"); | |
302 | if (name[0] == '*') | |
303 | strcat (buffer, name+1); | |
304 | else | |
305 | { | |
306 | strcat (buffer, "_"); | |
307 | strcat (buffer, name); | |
308 | } | |
309 | ||
310 | strcat (buffer, "$non_lazy_ptr"); | |
311 | ptr_name = get_identifier (buffer); | |
312 | ||
313 | machopic_non_lazy_pointers | |
314 | = tree_cons (ptr_name, ident, machopic_non_lazy_pointers); | |
315 | ||
316 | TREE_USED (machopic_non_lazy_pointers) = 0; | |
317 | ||
318 | return IDENTIFIER_POINTER (ptr_name); | |
319 | } | |
320 | } | |
321 | ||
e2500fed | 322 | static GTY(()) tree machopic_stubs; |
ee890fe2 SS |
323 | |
324 | /* Return the name of the stub corresponding to the given name, | |
325 | generating a new stub name if necessary. */ | |
326 | ||
92c1a778 | 327 | const char * |
ee890fe2 SS |
328 | machopic_stub_name (name) |
329 | const char *name; | |
330 | { | |
331 | tree temp, ident = get_identifier (name); | |
93913281 SS |
332 | const char *tname; |
333 | ||
ee890fe2 SS |
334 | for (temp = machopic_stubs; |
335 | temp != NULL_TREE; | |
336 | temp = TREE_CHAIN (temp)) | |
337 | { | |
338 | if (ident == TREE_VALUE (temp)) | |
339 | return IDENTIFIER_POINTER (TREE_PURPOSE (temp)); | |
93913281 SS |
340 | tname = IDENTIFIER_POINTER (TREE_VALUE (temp)); |
341 | if (strcmp (name, tname) == 0) | |
342 | return IDENTIFIER_POINTER (TREE_PURPOSE (temp)); | |
343 | /* A library call name might not be section-encoded yet, so try | |
344 | it against a stripped name. */ | |
345 | if (name[0] != '!' | |
346 | && tname[0] == '!' | |
347 | && strcmp (name, tname + 4) == 0) | |
4e08ba6c | 348 | return IDENTIFIER_POINTER (TREE_PURPOSE (temp)); |
ee890fe2 SS |
349 | } |
350 | ||
772c5265 | 351 | name = darwin_strip_name_encoding (name); |
df56a27f | 352 | |
ee890fe2 SS |
353 | { |
354 | char *buffer; | |
355 | tree ptr_name; | |
356 | int needs_quotes = name_needs_quotes (name); | |
357 | ||
358 | buffer = alloca (strlen (name) + 20); | |
359 | ||
360 | if (needs_quotes) | |
361 | strcpy (buffer, "&\"L"); | |
362 | else | |
363 | strcpy (buffer, "&L"); | |
364 | if (name[0] == '*') | |
365 | { | |
366 | strcat (buffer, name+1); | |
367 | } | |
368 | else | |
369 | { | |
370 | strcat (buffer, "_"); | |
371 | strcat (buffer, name); | |
372 | } | |
373 | ||
374 | if (needs_quotes) | |
375 | strcat (buffer, "$stub\""); | |
376 | else | |
377 | strcat (buffer, "$stub"); | |
378 | ptr_name = get_identifier (buffer); | |
379 | ||
380 | machopic_stubs = tree_cons (ptr_name, ident, machopic_stubs); | |
381 | TREE_USED (machopic_stubs) = 0; | |
382 | ||
383 | return IDENTIFIER_POINTER (ptr_name); | |
384 | } | |
385 | } | |
386 | ||
387 | void | |
388 | machopic_validate_stub_or_non_lazy_ptr (name, validate_stub) | |
389 | const char *name; | |
390 | int validate_stub; | |
391 | { | |
df56a27f SS |
392 | char *real_name; |
393 | tree temp, ident = get_identifier (name), id2; | |
ee890fe2 SS |
394 | |
395 | for (temp = (validate_stub ? machopic_stubs : machopic_non_lazy_pointers); | |
396 | temp != NULL_TREE; | |
397 | temp = TREE_CHAIN (temp)) | |
398 | if (ident == TREE_PURPOSE (temp)) | |
399 | { | |
400 | /* Mark both the stub or non-lazy pointer as well as the | |
401 | original symbol as being referenced. */ | |
402 | TREE_USED (temp) = 1; | |
403 | if (TREE_CODE (TREE_VALUE (temp)) == IDENTIFIER_NODE) | |
404 | TREE_SYMBOL_REFERENCED (TREE_VALUE (temp)) = 1; | |
772c5265 RH |
405 | real_name = IDENTIFIER_POINTER (TREE_VALUE (temp)); |
406 | real_name = darwin_strip_name_encoding (real_name); | |
df56a27f SS |
407 | id2 = maybe_get_identifier (real_name); |
408 | if (id2) | |
409 | TREE_SYMBOL_REFERENCED (id2) = 1; | |
ee890fe2 SS |
410 | } |
411 | } | |
412 | ||
413 | /* Transform ORIG, which may be any data source, to the corresponding | |
414 | source using indirections. */ | |
415 | ||
416 | rtx | |
417 | machopic_indirect_data_reference (orig, reg) | |
418 | rtx orig, reg; | |
419 | { | |
420 | rtx ptr_ref = orig; | |
421 | ||
422 | if (! MACHOPIC_INDIRECT) | |
423 | return orig; | |
424 | ||
425 | if (GET_CODE (orig) == SYMBOL_REF) | |
426 | { | |
427 | const char *name = XSTR (orig, 0); | |
428 | ||
429 | if (machopic_data_defined_p (name)) | |
430 | { | |
431 | rtx pic_base = gen_rtx (SYMBOL_REF, Pmode, | |
432 | machopic_function_base_name ()); | |
433 | rtx offset = gen_rtx (CONST, Pmode, | |
434 | gen_rtx (MINUS, Pmode, orig, pic_base)); | |
435 | ||
436 | #if defined (TARGET_TOC) /* i.e., PowerPC */ | |
437 | rtx hi_sum_reg = reg; | |
438 | ||
439 | if (reg == NULL) | |
440 | abort (); | |
441 | ||
442 | emit_insn (gen_rtx (SET, Pmode, hi_sum_reg, | |
443 | gen_rtx (PLUS, Pmode, pic_offset_table_rtx, | |
444 | gen_rtx (HIGH, Pmode, offset)))); | |
445 | emit_insn (gen_rtx (SET, Pmode, reg, | |
446 | gen_rtx (LO_SUM, Pmode, hi_sum_reg, offset))); | |
447 | ||
448 | orig = reg; | |
449 | #else | |
450 | #if defined (HAVE_lo_sum) | |
451 | if (reg == 0) abort (); | |
452 | ||
453 | emit_insn (gen_rtx (SET, VOIDmode, reg, | |
454 | gen_rtx (HIGH, Pmode, offset))); | |
455 | emit_insn (gen_rtx (SET, VOIDmode, reg, | |
456 | gen_rtx (LO_SUM, Pmode, reg, offset))); | |
457 | emit_insn (gen_rtx (USE, VOIDmode, | |
458 | gen_rtx_REG (Pmode, PIC_OFFSET_TABLE_REGNUM))); | |
459 | ||
460 | orig = gen_rtx (PLUS, Pmode, pic_offset_table_rtx, reg); | |
461 | #endif | |
462 | #endif | |
463 | return orig; | |
464 | } | |
465 | ||
466 | ptr_ref = gen_rtx (SYMBOL_REF, Pmode, | |
467 | machopic_non_lazy_ptr_name (name)); | |
468 | ||
469 | ptr_ref = gen_rtx_MEM (Pmode, ptr_ref); | |
470 | RTX_UNCHANGING_P (ptr_ref) = 1; | |
471 | ||
472 | return ptr_ref; | |
473 | } | |
474 | else if (GET_CODE (orig) == CONST) | |
475 | { | |
476 | rtx base, result; | |
477 | ||
478 | /* legitimize both operands of the PLUS */ | |
479 | if (GET_CODE (XEXP (orig, 0)) == PLUS) | |
480 | { | |
481 | base = machopic_indirect_data_reference (XEXP (XEXP (orig, 0), 0), | |
482 | reg); | |
483 | orig = machopic_indirect_data_reference (XEXP (XEXP (orig, 0), 1), | |
484 | (base == reg ? 0 : reg)); | |
485 | } | |
486 | else | |
487 | return orig; | |
488 | ||
489 | if (MACHOPIC_PURE && GET_CODE (orig) == CONST_INT) | |
ed8908e7 | 490 | result = plus_constant (base, INTVAL (orig)); |
ee890fe2 | 491 | else |
ed8908e7 | 492 | result = gen_rtx (PLUS, Pmode, base, orig); |
ee890fe2 | 493 | |
ee890fe2 SS |
494 | if (MACHOPIC_JUST_INDIRECT && GET_CODE (base) == MEM) |
495 | { | |
496 | if (reg) | |
497 | { | |
498 | emit_move_insn (reg, result); | |
499 | result = reg; | |
500 | } | |
501 | else | |
502 | { | |
503 | result = force_reg (GET_MODE (result), result); | |
504 | } | |
505 | } | |
506 | ||
507 | return result; | |
508 | ||
509 | } | |
510 | else if (GET_CODE (orig) == MEM) | |
511 | XEXP (ptr_ref, 0) = machopic_indirect_data_reference (XEXP (orig, 0), reg); | |
512 | /* When the target is i386, this code prevents crashes due to the | |
513 | compiler's ignorance on how to move the PIC base register to | |
514 | other registers. (The reload phase sometimes introduces such | |
515 | insns.) */ | |
516 | else if (GET_CODE (orig) == PLUS | |
517 | && GET_CODE (XEXP (orig, 0)) == REG | |
518 | && REGNO (XEXP (orig, 0)) == PIC_OFFSET_TABLE_REGNUM | |
519 | #ifdef I386 | |
520 | /* Prevent the same register from being erroneously used | |
521 | as both the base and index registers. */ | |
522 | && GET_CODE (XEXP (orig, 1)) == CONST | |
523 | #endif | |
524 | && reg) | |
525 | { | |
526 | emit_move_insn (reg, XEXP (orig, 0)); | |
527 | XEXP (ptr_ref, 0) = reg; | |
528 | } | |
529 | return ptr_ref; | |
530 | } | |
531 | ||
ee890fe2 SS |
532 | /* Transform TARGET (a MEM), which is a function call target, to the |
533 | corresponding symbol_stub if necessary. Return a new MEM. */ | |
534 | ||
535 | rtx | |
536 | machopic_indirect_call_target (target) | |
537 | rtx target; | |
538 | { | |
539 | if (GET_CODE (target) != MEM) | |
540 | return target; | |
541 | ||
542 | if (MACHOPIC_INDIRECT && GET_CODE (XEXP (target, 0)) == SYMBOL_REF) | |
543 | { | |
544 | enum machine_mode mode = GET_MODE (XEXP (target, 0)); | |
545 | const char *name = XSTR (XEXP (target, 0), 0); | |
546 | ||
b7fb9feb TC |
547 | /* If the name is already defined, we need do nothing. */ |
548 | if (name[0] == '!' && name[1] == 'T') | |
549 | return target; | |
550 | ||
551 | if (!machopic_name_defined_p (name)) | |
ee890fe2 SS |
552 | { |
553 | const char *stub_name = machopic_stub_name (name); | |
554 | ||
555 | XEXP (target, 0) = gen_rtx (SYMBOL_REF, mode, stub_name); | |
556 | RTX_UNCHANGING_P (target) = 1; | |
557 | } | |
558 | } | |
559 | ||
560 | return target; | |
561 | } | |
562 | ||
563 | rtx | |
564 | machopic_legitimize_pic_address (orig, mode, reg) | |
565 | rtx orig, reg; | |
566 | enum machine_mode mode; | |
567 | { | |
568 | rtx pic_ref = orig; | |
569 | ||
570 | if (! MACHOPIC_PURE) | |
571 | return orig; | |
572 | ||
573 | /* First handle a simple SYMBOL_REF or LABEL_REF */ | |
574 | if (GET_CODE (orig) == LABEL_REF | |
575 | || (GET_CODE (orig) == SYMBOL_REF | |
576 | )) | |
577 | { | |
578 | /* addr(foo) = &func+(foo-func) */ | |
579 | rtx pic_base; | |
580 | ||
581 | orig = machopic_indirect_data_reference (orig, reg); | |
582 | ||
583 | if (GET_CODE (orig) == PLUS | |
584 | && GET_CODE (XEXP (orig, 0)) == REG) | |
585 | { | |
586 | if (reg == 0) | |
587 | return force_reg (mode, orig); | |
588 | ||
589 | emit_move_insn (reg, orig); | |
590 | return reg; | |
591 | } | |
592 | ||
593 | pic_base = gen_rtx (SYMBOL_REF, Pmode, machopic_function_base_name ()); | |
594 | ||
595 | if (GET_CODE (orig) == MEM) | |
596 | { | |
597 | if (reg == 0) | |
598 | { | |
599 | if (reload_in_progress) | |
600 | abort (); | |
601 | else | |
602 | reg = gen_reg_rtx (Pmode); | |
603 | } | |
604 | ||
605 | #ifdef HAVE_lo_sum | |
606 | if (GET_CODE (XEXP (orig, 0)) == SYMBOL_REF | |
607 | || GET_CODE (XEXP (orig, 0)) == LABEL_REF) | |
608 | { | |
609 | rtx offset = gen_rtx (CONST, Pmode, | |
610 | gen_rtx (MINUS, Pmode, | |
611 | XEXP (orig, 0), pic_base)); | |
612 | #if defined (TARGET_TOC) /* i.e., PowerPC */ | |
613 | /* Generating a new reg may expose opportunities for | |
614 | common subexpression elimination. */ | |
615 | rtx hi_sum_reg = | |
616 | (reload_in_progress ? reg : gen_reg_rtx (SImode)); | |
617 | ||
618 | emit_insn (gen_rtx (SET, Pmode, hi_sum_reg, | |
619 | gen_rtx (PLUS, Pmode, | |
620 | pic_offset_table_rtx, | |
621 | gen_rtx (HIGH, Pmode, offset)))); | |
622 | emit_insn (gen_rtx (SET, VOIDmode, reg, | |
623 | gen_rtx (MEM, GET_MODE (orig), | |
624 | gen_rtx (LO_SUM, Pmode, | |
625 | hi_sum_reg, offset)))); | |
626 | pic_ref = reg; | |
627 | ||
628 | #else | |
629 | emit_insn (gen_rtx (USE, VOIDmode, | |
630 | gen_rtx_REG (Pmode, PIC_OFFSET_TABLE_REGNUM))); | |
631 | ||
632 | emit_insn (gen_rtx (SET, VOIDmode, reg, | |
633 | gen_rtx (HIGH, Pmode, | |
634 | gen_rtx (CONST, Pmode, offset)))); | |
635 | emit_insn (gen_rtx (SET, VOIDmode, reg, | |
636 | gen_rtx (LO_SUM, Pmode, reg, | |
637 | gen_rtx (CONST, Pmode, offset)))); | |
638 | pic_ref = gen_rtx (PLUS, Pmode, | |
639 | pic_offset_table_rtx, reg); | |
640 | #endif | |
641 | } | |
642 | else | |
643 | #endif /* HAVE_lo_sum */ | |
644 | { | |
645 | rtx pic = pic_offset_table_rtx; | |
646 | if (GET_CODE (pic) != REG) | |
647 | { | |
648 | emit_move_insn (reg, pic); | |
649 | pic = reg; | |
650 | } | |
651 | #if 0 | |
652 | emit_insn (gen_rtx (USE, VOIDmode, | |
653 | gen_rtx (REG, Pmode, PIC_OFFSET_TABLE_REGNUM))); | |
654 | #endif | |
655 | ||
656 | pic_ref = gen_rtx (PLUS, Pmode, | |
657 | pic, | |
658 | gen_rtx (CONST, Pmode, | |
659 | gen_rtx (MINUS, Pmode, | |
660 | XEXP (orig, 0), | |
661 | pic_base))); | |
662 | } | |
663 | ||
664 | #if !defined (TARGET_TOC) | |
ee890fe2 SS |
665 | emit_move_insn (reg, pic_ref); |
666 | pic_ref = gen_rtx (MEM, GET_MODE (orig), reg); | |
667 | #endif | |
b069de3b | 668 | RTX_UNCHANGING_P (pic_ref) = 1; |
ee890fe2 SS |
669 | } |
670 | else | |
671 | { | |
672 | ||
673 | #ifdef HAVE_lo_sum | |
674 | if (GET_CODE (orig) == SYMBOL_REF | |
675 | || GET_CODE (orig) == LABEL_REF) | |
676 | { | |
677 | rtx offset = gen_rtx (CONST, Pmode, | |
678 | gen_rtx (MINUS, Pmode, orig, pic_base)); | |
679 | #if defined (TARGET_TOC) /* i.e., PowerPC */ | |
680 | rtx hi_sum_reg; | |
681 | ||
682 | if (reg == 0) | |
683 | { | |
684 | if (reload_in_progress) | |
685 | abort (); | |
686 | else | |
687 | reg = gen_reg_rtx (SImode); | |
688 | } | |
689 | ||
690 | hi_sum_reg = reg; | |
691 | ||
692 | emit_insn (gen_rtx (SET, Pmode, hi_sum_reg, | |
693 | gen_rtx (PLUS, Pmode, | |
694 | pic_offset_table_rtx, | |
695 | gen_rtx (HIGH, Pmode, offset)))); | |
696 | emit_insn (gen_rtx (SET, VOIDmode, reg, | |
697 | gen_rtx (LO_SUM, Pmode, | |
698 | hi_sum_reg, offset))); | |
699 | pic_ref = reg; | |
b069de3b | 700 | RTX_UNCHANGING_P (pic_ref) = 1; |
ee890fe2 SS |
701 | #else |
702 | emit_insn (gen_rtx (SET, VOIDmode, reg, | |
703 | gen_rtx (HIGH, Pmode, offset))); | |
704 | emit_insn (gen_rtx (SET, VOIDmode, reg, | |
705 | gen_rtx (LO_SUM, Pmode, reg, offset))); | |
706 | pic_ref = gen_rtx (PLUS, Pmode, | |
707 | pic_offset_table_rtx, reg); | |
b069de3b | 708 | RTX_UNCHANGING_P (pic_ref) = 1; |
ee890fe2 SS |
709 | #endif |
710 | } | |
711 | else | |
712 | #endif /* HAVE_lo_sum */ | |
713 | { | |
714 | if (GET_CODE (orig) == REG) | |
715 | { | |
716 | return orig; | |
717 | } | |
718 | else | |
719 | { | |
720 | rtx pic = pic_offset_table_rtx; | |
721 | if (GET_CODE (pic) != REG) | |
722 | { | |
723 | emit_move_insn (reg, pic); | |
724 | pic = reg; | |
725 | } | |
726 | #if 0 | |
727 | emit_insn (gen_rtx (USE, VOIDmode, | |
728 | pic_offset_table_rtx)); | |
729 | #endif | |
730 | pic_ref = gen_rtx (PLUS, Pmode, | |
731 | pic, | |
732 | gen_rtx (CONST, Pmode, | |
733 | gen_rtx (MINUS, Pmode, | |
734 | orig, pic_base))); | |
735 | } | |
736 | } | |
737 | } | |
738 | ||
ee890fe2 SS |
739 | if (GET_CODE (pic_ref) != REG) |
740 | { | |
741 | if (reg != 0) | |
742 | { | |
743 | emit_move_insn (reg, pic_ref); | |
744 | return reg; | |
745 | } | |
746 | else | |
747 | { | |
748 | return force_reg (mode, pic_ref); | |
749 | } | |
750 | } | |
751 | else | |
752 | { | |
753 | return pic_ref; | |
754 | } | |
755 | } | |
756 | ||
757 | else if (GET_CODE (orig) == SYMBOL_REF) | |
758 | return orig; | |
759 | ||
760 | else if (GET_CODE (orig) == PLUS | |
761 | && (GET_CODE (XEXP (orig, 0)) == MEM | |
762 | || GET_CODE (XEXP (orig, 0)) == SYMBOL_REF | |
763 | || GET_CODE (XEXP (orig, 0)) == LABEL_REF) | |
764 | && XEXP (orig, 0) != pic_offset_table_rtx | |
765 | && GET_CODE (XEXP (orig, 1)) != REG) | |
766 | ||
767 | { | |
768 | rtx base; | |
769 | int is_complex = (GET_CODE (XEXP (orig, 0)) == MEM); | |
770 | ||
771 | base = machopic_legitimize_pic_address (XEXP (orig, 0), Pmode, reg); | |
772 | orig = machopic_legitimize_pic_address (XEXP (orig, 1), | |
773 | Pmode, (base == reg ? 0 : reg)); | |
774 | if (GET_CODE (orig) == CONST_INT) | |
775 | { | |
ed8908e7 | 776 | pic_ref = plus_constant (base, INTVAL (orig)); |
ee890fe2 SS |
777 | is_complex = 1; |
778 | } | |
779 | else | |
ed8908e7 | 780 | pic_ref = gen_rtx (PLUS, Pmode, base, orig); |
ee890fe2 SS |
781 | |
782 | if (RTX_UNCHANGING_P (base) && RTX_UNCHANGING_P (orig)) | |
783 | RTX_UNCHANGING_P (pic_ref) = 1; | |
784 | ||
785 | if (reg && is_complex) | |
786 | { | |
787 | emit_move_insn (reg, pic_ref); | |
788 | pic_ref = reg; | |
789 | } | |
790 | /* Likewise, should we set special REG_NOTEs here? */ | |
791 | } | |
792 | ||
793 | else if (GET_CODE (orig) == CONST) | |
794 | { | |
795 | return machopic_legitimize_pic_address (XEXP (orig, 0), Pmode, reg); | |
796 | } | |
797 | ||
798 | else if (GET_CODE (orig) == MEM | |
799 | && GET_CODE (XEXP (orig, 0)) == SYMBOL_REF) | |
800 | { | |
801 | rtx addr = machopic_legitimize_pic_address (XEXP (orig, 0), Pmode, reg); | |
802 | ||
803 | addr = gen_rtx (MEM, GET_MODE (orig), addr); | |
804 | RTX_UNCHANGING_P (addr) = RTX_UNCHANGING_P (orig); | |
805 | emit_move_insn (reg, addr); | |
806 | pic_ref = reg; | |
807 | } | |
808 | ||
809 | return pic_ref; | |
810 | } | |
811 | ||
812 | ||
813 | void | |
814 | machopic_finish (asm_out_file) | |
815 | FILE *asm_out_file; | |
816 | { | |
817 | tree temp; | |
818 | ||
819 | for (temp = machopic_stubs; | |
820 | temp != NULL_TREE; | |
821 | temp = TREE_CHAIN (temp)) | |
822 | { | |
91dc3130 KG |
823 | const char *sym_name = IDENTIFIER_POINTER (TREE_VALUE (temp)); |
824 | const char *stub_name = IDENTIFIER_POINTER (TREE_PURPOSE (temp)); | |
ee890fe2 SS |
825 | char *sym; |
826 | char *stub; | |
ee890fe2 SS |
827 | |
828 | if (! TREE_USED (temp)) | |
829 | continue; | |
830 | ||
b7fb9feb TC |
831 | /* If the symbol is actually defined, we don't need a stub. */ |
832 | if (sym_name[0] == '!' && sym_name[1] == 'T') | |
833 | continue; | |
834 | ||
772c5265 | 835 | sym_name = darwin_strip_name_encoding (sym_name); |
ee890fe2 SS |
836 | |
837 | sym = alloca (strlen (sym_name) + 2); | |
838 | if (sym_name[0] == '*' || sym_name[0] == '&') | |
839 | strcpy (sym, sym_name + 1); | |
840 | else if (sym_name[0] == '-' || sym_name[0] == '+') | |
841 | strcpy (sym, sym_name); | |
842 | else | |
843 | sym[0] = '_', strcpy (sym + 1, sym_name); | |
844 | ||
845 | stub = alloca (strlen (stub_name) + 2); | |
846 | if (stub_name[0] == '*' || stub_name[0] == '&') | |
847 | strcpy (stub, stub_name + 1); | |
848 | else | |
849 | stub[0] = '_', strcpy (stub + 1, stub_name); | |
850 | ||
851 | machopic_output_stub (asm_out_file, sym, stub); | |
852 | } | |
853 | ||
854 | for (temp = machopic_non_lazy_pointers; | |
855 | temp != NULL_TREE; | |
856 | temp = TREE_CHAIN (temp)) | |
857 | { | |
858 | char *sym_name = IDENTIFIER_POINTER (TREE_VALUE (temp)); | |
859 | char *lazy_name = IDENTIFIER_POINTER (TREE_PURPOSE (temp)); | |
860 | #if 0 | |
861 | tree decl = lookup_name_darwin (TREE_VALUE (temp)); | |
862 | #endif | |
863 | ||
864 | if (! TREE_USED (temp)) | |
865 | continue; | |
866 | ||
867 | if (machopic_ident_defined_p (TREE_VALUE (temp)) | |
868 | #if 0 /* add back when we have private externs */ | |
869 | || (decl && DECL_PRIVATE_EXTERN (decl)) | |
870 | #endif | |
871 | ) | |
872 | { | |
873 | data_section (); | |
c8af3574 | 874 | assemble_align (GET_MODE_ALIGNMENT (Pmode)); |
ee890fe2 SS |
875 | assemble_label (lazy_name); |
876 | assemble_integer (gen_rtx (SYMBOL_REF, Pmode, sym_name), | |
c8af3574 RH |
877 | GET_MODE_SIZE (Pmode), |
878 | GET_MODE_ALIGNMENT (Pmode), 1); | |
ee890fe2 SS |
879 | } |
880 | else | |
881 | { | |
882 | machopic_nl_symbol_ptr_section (); | |
883 | assemble_name (asm_out_file, lazy_name); | |
884 | fprintf (asm_out_file, ":\n"); | |
885 | ||
886 | fprintf (asm_out_file, "\t.indirect_symbol "); | |
887 | assemble_name (asm_out_file, sym_name); | |
888 | fprintf (asm_out_file, "\n"); | |
889 | ||
c8af3574 RH |
890 | assemble_integer (const0_rtx, GET_MODE_SIZE (Pmode), |
891 | GET_MODE_ALIGNMENT (Pmode), 1); | |
ee890fe2 SS |
892 | } |
893 | } | |
894 | } | |
895 | ||
896 | int | |
897 | machopic_operand_p (op) | |
898 | rtx op; | |
899 | { | |
900 | if (MACHOPIC_JUST_INDIRECT) | |
901 | { | |
902 | while (GET_CODE (op) == CONST) | |
903 | op = XEXP (op, 0); | |
904 | ||
905 | if (GET_CODE (op) == SYMBOL_REF) | |
906 | return machopic_name_defined_p (XSTR (op, 0)); | |
907 | else | |
908 | return 0; | |
909 | } | |
910 | ||
911 | while (GET_CODE (op) == CONST) | |
912 | op = XEXP (op, 0); | |
913 | ||
914 | if (GET_CODE (op) == MINUS | |
915 | && GET_CODE (XEXP (op, 0)) == SYMBOL_REF | |
916 | && GET_CODE (XEXP (op, 1)) == SYMBOL_REF | |
917 | && machopic_name_defined_p (XSTR (XEXP (op, 0), 0)) | |
918 | && machopic_name_defined_p (XSTR (XEXP (op, 1), 0))) | |
919 | return 1; | |
920 | ||
921 | #if 0 /*def TARGET_TOC*/ /* i.e., PowerPC */ | |
922 | /* Without this statement, the compiler crashes while compiling enquire.c | |
923 | when targetting PowerPC. It is not known why this code is not needed | |
924 | when targetting other processors. */ | |
925 | else if (GET_CODE (op) == SYMBOL_REF | |
926 | && (machopic_classify_name (XSTR (op, 0)) | |
927 | == MACHOPIC_DEFINED_FUNCTION)) | |
928 | { | |
929 | return 1; | |
930 | } | |
931 | #endif | |
932 | ||
933 | return 0; | |
934 | } | |
df56a27f SS |
935 | |
936 | /* This function records whether a given name corresponds to a defined | |
937 | or undefined function or variable, for machopic_classify_ident to | |
938 | use later. */ | |
939 | ||
940 | void | |
b2003250 | 941 | darwin_encode_section_info (decl, first) |
df56a27f | 942 | tree decl; |
b2003250 | 943 | int first ATTRIBUTE_UNUSED; |
df56a27f SS |
944 | { |
945 | char code = '\0'; | |
946 | int defined = 0; | |
353e51f8 | 947 | rtx sym_ref; |
c0cbc013 DJ |
948 | const char *orig_str; |
949 | char *new_str; | |
353e51f8 | 950 | size_t len, new_len; |
df56a27f SS |
951 | |
952 | if ((TREE_CODE (decl) == FUNCTION_DECL | |
953 | || TREE_CODE (decl) == VAR_DECL) | |
70bdc2ff | 954 | && !DECL_EXTERNAL (decl) |
df56a27f SS |
955 | && ((TREE_STATIC (decl) |
956 | && (!DECL_COMMON (decl) || !TREE_PUBLIC (decl))) | |
abe72dd8 SS |
957 | || (DECL_INITIAL (decl) |
958 | && DECL_INITIAL (decl) != error_mark_node))) | |
df56a27f SS |
959 | defined = 1; |
960 | ||
961 | if (TREE_CODE (decl) == FUNCTION_DECL) | |
962 | code = (defined ? 'T' : 't'); | |
963 | else if (TREE_CODE (decl) == VAR_DECL) | |
964 | code = (defined ? 'D' : 'd'); | |
965 | ||
353e51f8 SS |
966 | if (code == '\0') |
967 | return; | |
df56a27f | 968 | |
353e51f8 SS |
969 | sym_ref = XEXP (DECL_RTL (decl), 0); |
970 | orig_str = XSTR (sym_ref, 0); | |
971 | len = strlen (orig_str) + 1; | |
df56a27f | 972 | |
353e51f8 SS |
973 | if (orig_str[0] == '!') |
974 | { | |
975 | /* Already encoded; see if we need to change it. */ | |
976 | if (code == orig_str[1]) | |
977 | return; | |
978 | /* Yes, tweak a copy of the name and put it in a new string. */ | |
979 | new_str = alloca (len); | |
980 | memcpy (new_str, orig_str, len); | |
981 | new_str[1] = code; | |
982 | XSTR (sym_ref, 0) = ggc_alloc_string (new_str, len); | |
353e51f8 SS |
983 | } |
984 | else | |
985 | { | |
986 | /* Add the encoding. */ | |
987 | new_len = len + 4; | |
988 | new_str = alloca (new_len); | |
989 | new_str[0] = '!'; | |
990 | new_str[1] = code; | |
991 | new_str[2] = '_'; | |
992 | new_str[3] = '_'; | |
993 | memcpy (new_str + 4, orig_str, len); | |
994 | XSTR (sym_ref, 0) = ggc_alloc_string (new_str, new_len); | |
df56a27f | 995 | } |
4e08ba6c SS |
996 | /* The non-lazy pointer list may have captured references to the |
997 | old encoded name, change them. */ | |
b7fb9feb TC |
998 | if (TREE_CODE (decl) == VAR_DECL) |
999 | update_non_lazy_ptrs (XSTR (sym_ref, 0)); | |
1000 | else | |
1001 | update_stubs (XSTR (sym_ref, 0)); | |
df56a27f SS |
1002 | } |
1003 | ||
772c5265 RH |
1004 | /* Undo the effects of the above. */ |
1005 | ||
1006 | const char * | |
1007 | darwin_strip_name_encoding (str) | |
1008 | const char *str; | |
1009 | { | |
1010 | return str[0] == '!' ? str + 4 : str; | |
1011 | } | |
1012 | ||
df56a27f SS |
1013 | /* Scan the list of non-lazy pointers and update any recorded names whose |
1014 | stripped name matches the argument. */ | |
1015 | ||
1016 | static void | |
1017 | update_non_lazy_ptrs (name) | |
1018 | const char *name; | |
1019 | { | |
91dc3130 | 1020 | const char *name1, *name2; |
df56a27f SS |
1021 | tree temp; |
1022 | ||
772c5265 | 1023 | name1 = darwin_strip_name_encoding (name); |
df56a27f SS |
1024 | |
1025 | for (temp = machopic_non_lazy_pointers; | |
1026 | temp != NULL_TREE; | |
1027 | temp = TREE_CHAIN (temp)) | |
1028 | { | |
1029 | char *sym_name = IDENTIFIER_POINTER (TREE_VALUE (temp)); | |
1030 | ||
1031 | if (*sym_name == '!') | |
1032 | { | |
772c5265 | 1033 | name2 = darwin_strip_name_encoding (sym_name); |
df56a27f SS |
1034 | if (strcmp (name1, name2) == 0) |
1035 | { | |
1036 | IDENTIFIER_POINTER (TREE_VALUE (temp)) = name; | |
1037 | break; | |
1038 | } | |
1039 | } | |
1040 | } | |
1041 | } | |
4e08ba6c | 1042 | |
b7fb9feb TC |
1043 | /* Function NAME is being defined, and its label has just been output. |
1044 | If there's already a reference to a stub for this function, we can | |
1045 | just emit the stub label now and we don't bother emitting the stub later. */ | |
1046 | ||
1047 | void | |
1048 | machopic_output_possible_stub_label (file, name) | |
1049 | FILE *file; | |
1050 | const char *name; | |
1051 | { | |
1052 | tree temp; | |
1053 | ||
1054 | ||
1055 | /* Ensure we're looking at a section-encoded name. */ | |
1056 | if (name[0] != '!' || (name[1] != 't' && name[1] != 'T')) | |
1057 | return; | |
1058 | ||
1059 | for (temp = machopic_stubs; | |
1060 | temp != NULL_TREE; | |
1061 | temp = TREE_CHAIN (temp)) | |
1062 | { | |
1063 | const char *sym_name; | |
1064 | ||
1065 | sym_name = IDENTIFIER_POINTER (TREE_VALUE (temp)); | |
1066 | if (sym_name[0] == '!' && sym_name[1] == 'T' | |
1067 | && ! strcmp (name+2, sym_name+2)) | |
1068 | { | |
1069 | ASM_OUTPUT_LABEL (file, IDENTIFIER_POINTER (TREE_PURPOSE (temp))); | |
61d951df TC |
1070 | /* Avoid generating a stub for this. */ |
1071 | TREE_USED (temp) = 0; | |
b7fb9feb TC |
1072 | break; |
1073 | } | |
1074 | } | |
1075 | } | |
4e08ba6c SS |
1076 | |
1077 | /* Scan the list of stubs and update any recorded names whose | |
1078 | stripped name matches the argument. */ | |
1079 | ||
1080 | static void | |
1081 | update_stubs (name) | |
1082 | const char *name; | |
1083 | { | |
91dc3130 | 1084 | const char *name1, *name2; |
4e08ba6c SS |
1085 | tree temp; |
1086 | ||
772c5265 | 1087 | name1 = darwin_strip_name_encoding (name); |
4e08ba6c SS |
1088 | |
1089 | for (temp = machopic_stubs; | |
1090 | temp != NULL_TREE; | |
1091 | temp = TREE_CHAIN (temp)) | |
1092 | { | |
1093 | char *sym_name = IDENTIFIER_POINTER (TREE_VALUE (temp)); | |
1094 | ||
1095 | if (*sym_name == '!') | |
1096 | { | |
772c5265 | 1097 | name2 = darwin_strip_name_encoding (sym_name); |
4e08ba6c SS |
1098 | if (strcmp (name1, name2) == 0) |
1099 | { | |
1100 | IDENTIFIER_POINTER (TREE_VALUE (temp)) = name; | |
1101 | break; | |
1102 | } | |
1103 | } | |
1104 | } | |
1105 | } | |
2cc07db4 | 1106 | |
ae46c4e0 RH |
1107 | void |
1108 | machopic_select_section (exp, reloc, align) | |
1109 | tree exp; | |
1110 | int reloc; | |
1111 | unsigned HOST_WIDE_INT align ATTRIBUTE_UNUSED; | |
1112 | { | |
1113 | if (TREE_CODE (exp) == STRING_CST) | |
1114 | { | |
1115 | if (flag_writable_strings) | |
1116 | data_section (); | |
1117 | else if (TREE_STRING_LENGTH (exp) != | |
1118 | strlen (TREE_STRING_POINTER (exp)) + 1) | |
1119 | readonly_data_section (); | |
1120 | else | |
1121 | cstring_section (); | |
1122 | } | |
1123 | else if (TREE_CODE (exp) == INTEGER_CST | |
1124 | || TREE_CODE (exp) == REAL_CST) | |
1125 | { | |
1126 | tree size = TYPE_SIZE (TREE_TYPE (exp)); | |
1127 | ||
1128 | if (TREE_CODE (size) == INTEGER_CST && | |
1129 | TREE_INT_CST_LOW (size) == 4 && | |
1130 | TREE_INT_CST_HIGH (size) == 0) | |
1131 | literal4_section (); | |
1132 | else if (TREE_CODE (size) == INTEGER_CST && | |
1133 | TREE_INT_CST_LOW (size) == 8 && | |
1134 | TREE_INT_CST_HIGH (size) == 0) | |
1135 | literal8_section (); | |
1136 | else | |
1137 | readonly_data_section (); | |
1138 | } | |
1139 | else if (TREE_CODE (exp) == CONSTRUCTOR | |
1140 | && TREE_TYPE (exp) | |
1141 | && TREE_CODE (TREE_TYPE (exp)) == RECORD_TYPE | |
1142 | && TYPE_NAME (TREE_TYPE (exp))) | |
1143 | { | |
1144 | tree name = TYPE_NAME (TREE_TYPE (exp)); | |
1145 | if (TREE_CODE (name) == TYPE_DECL) | |
1146 | name = DECL_NAME (name); | |
1147 | if (!strcmp (IDENTIFIER_POINTER (name), "NSConstantString")) | |
1148 | objc_constant_string_object_section (); | |
1149 | else if (!strcmp (IDENTIFIER_POINTER (name), "NXConstantString")) | |
1150 | objc_string_object_section (); | |
1151 | else if (TREE_READONLY (exp) || TREE_CONSTANT (exp)) | |
1152 | { | |
1153 | if (TREE_SIDE_EFFECTS (exp) || flag_pic && reloc) | |
1154 | const_data_section (); | |
1155 | else | |
1156 | readonly_data_section (); | |
1157 | } | |
1158 | else | |
1159 | data_section (); | |
1160 | } | |
1161 | else if (TREE_CODE (exp) == VAR_DECL && | |
1162 | DECL_NAME (exp) && | |
1163 | TREE_CODE (DECL_NAME (exp)) == IDENTIFIER_NODE && | |
1164 | IDENTIFIER_POINTER (DECL_NAME (exp)) && | |
1165 | !strncmp (IDENTIFIER_POINTER (DECL_NAME (exp)), "_OBJC_", 6)) | |
1166 | { | |
1167 | const char *name = IDENTIFIER_POINTER (DECL_NAME (exp)); | |
1168 | ||
1169 | if (!strncmp (name, "_OBJC_CLASS_METHODS_", 20)) | |
1170 | objc_cls_meth_section (); | |
1171 | else if (!strncmp (name, "_OBJC_INSTANCE_METHODS_", 23)) | |
1172 | objc_inst_meth_section (); | |
1173 | else if (!strncmp (name, "_OBJC_CATEGORY_CLASS_METHODS_", 20)) | |
1174 | objc_cat_cls_meth_section (); | |
1175 | else if (!strncmp (name, "_OBJC_CATEGORY_INSTANCE_METHODS_", 23)) | |
1176 | objc_cat_inst_meth_section (); | |
1177 | else if (!strncmp (name, "_OBJC_CLASS_VARIABLES_", 22)) | |
1178 | objc_class_vars_section (); | |
1179 | else if (!strncmp (name, "_OBJC_INSTANCE_VARIABLES_", 25)) | |
1180 | objc_instance_vars_section (); | |
1181 | else if (!strncmp (name, "_OBJC_CLASS_PROTOCOLS_", 22)) | |
1182 | objc_cat_cls_meth_section (); | |
1183 | else if (!strncmp (name, "_OBJC_CLASS_NAME_", 17)) | |
1184 | objc_class_names_section (); | |
1185 | else if (!strncmp (name, "_OBJC_METH_VAR_NAME_", 20)) | |
1186 | objc_meth_var_names_section (); | |
1187 | else if (!strncmp (name, "_OBJC_METH_VAR_TYPE_", 20)) | |
1188 | objc_meth_var_types_section (); | |
1189 | else if (!strncmp (name, "_OBJC_CLASS_REFERENCES", 22)) | |
1190 | objc_cls_refs_section (); | |
1191 | else if (!strncmp (name, "_OBJC_CLASS_", 12)) | |
1192 | objc_class_section (); | |
1193 | else if (!strncmp (name, "_OBJC_METACLASS_", 16)) | |
1194 | objc_meta_class_section (); | |
1195 | else if (!strncmp (name, "_OBJC_CATEGORY_", 15)) | |
1196 | objc_category_section (); | |
1197 | else if (!strncmp (name, "_OBJC_SELECTOR_REFERENCES", 25)) | |
1198 | objc_selector_refs_section (); | |
1199 | else if (!strncmp (name, "_OBJC_SELECTOR_FIXUP", 20)) | |
1200 | objc_selector_fixup_section (); | |
1201 | else if (!strncmp (name, "_OBJC_SYMBOLS", 13)) | |
1202 | objc_symbols_section (); | |
1203 | else if (!strncmp (name, "_OBJC_MODULES", 13)) | |
1204 | objc_module_info_section (); | |
1205 | else if (!strncmp (name, "_OBJC_PROTOCOL_INSTANCE_METHODS_", 32)) | |
1206 | objc_cat_inst_meth_section (); | |
1207 | else if (!strncmp (name, "_OBJC_PROTOCOL_CLASS_METHODS_", 29)) | |
1208 | objc_cat_cls_meth_section (); | |
1209 | else if (!strncmp (name, "_OBJC_PROTOCOL_REFS_", 20)) | |
1210 | objc_cat_cls_meth_section (); | |
1211 | else if (!strncmp (name, "_OBJC_PROTOCOL_", 15)) | |
1212 | objc_protocol_section (); | |
1213 | else if ((TREE_READONLY (exp) || TREE_CONSTANT (exp)) | |
1214 | && !TREE_SIDE_EFFECTS (exp)) | |
1215 | { | |
1216 | if (flag_pic && reloc) | |
1217 | const_data_section (); | |
1218 | else | |
1219 | readonly_data_section (); | |
1220 | } | |
1221 | else | |
1222 | data_section (); | |
1223 | } | |
1224 | else if (TREE_READONLY (exp) || TREE_CONSTANT (exp)) | |
1225 | { | |
1226 | if (TREE_SIDE_EFFECTS (exp) || flag_pic && reloc) | |
1227 | const_data_section (); | |
1228 | else | |
1229 | readonly_data_section (); | |
1230 | } | |
1231 | else | |
1232 | data_section (); | |
1233 | } | |
1234 | ||
b64a1b53 RH |
1235 | /* This can be called with address expressions as "rtx". |
1236 | They must go in "const". */ | |
1237 | ||
1238 | void | |
1239 | machopic_select_rtx_section (mode, x, align) | |
1240 | enum machine_mode mode; | |
1241 | rtx x; | |
1242 | unsigned HOST_WIDE_INT align ATTRIBUTE_UNUSED; | |
1243 | { | |
1244 | if (GET_MODE_SIZE (mode) == 8) | |
1245 | literal8_section (); | |
1246 | else if (GET_MODE_SIZE (mode) == 4 | |
1247 | && (GET_CODE (x) == CONST_INT | |
1248 | || GET_CODE (x) == CONST_DOUBLE)) | |
1249 | literal4_section (); | |
1250 | else | |
1251 | const_section (); | |
1252 | } | |
1253 | ||
2cc07db4 RH |
1254 | void |
1255 | machopic_asm_out_constructor (symbol, priority) | |
1256 | rtx symbol; | |
1257 | int priority ATTRIBUTE_UNUSED; | |
1258 | { | |
1259 | if (flag_pic) | |
1260 | mod_init_section (); | |
1261 | else | |
1262 | constructor_section (); | |
c8af3574 RH |
1263 | assemble_align (POINTER_SIZE); |
1264 | assemble_integer (symbol, POINTER_SIZE / BITS_PER_UNIT, POINTER_SIZE, 1); | |
2cc07db4 RH |
1265 | |
1266 | if (!flag_pic) | |
1267 | fprintf (asm_out_file, ".reference .constructors_used\n"); | |
1268 | } | |
1269 | ||
1270 | void | |
1271 | machopic_asm_out_destructor (symbol, priority) | |
1272 | rtx symbol; | |
1273 | int priority ATTRIBUTE_UNUSED; | |
1274 | { | |
1275 | if (flag_pic) | |
1276 | mod_term_section (); | |
1277 | else | |
1278 | destructor_section (); | |
c8af3574 RH |
1279 | assemble_align (POINTER_SIZE); |
1280 | assemble_integer (symbol, POINTER_SIZE / BITS_PER_UNIT, POINTER_SIZE, 1); | |
2cc07db4 RH |
1281 | |
1282 | if (!flag_pic) | |
1283 | fprintf (asm_out_file, ".reference .destructors_used\n"); | |
1284 | } | |
e2500fed GK |
1285 | |
1286 | #include "gt-darwin.h" | |
1287 |