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ee890fe2 | 1 | /* Functions for generic Darwin as target machine for GNU C compiler. |
d24652ee | 2 | Copyright (C) 1989, 1990, 1991, 1992, 1993, 2000, 2001, 2002, 2003 |
ee890fe2 SS |
3 | Free Software Foundation, Inc. |
4 | Contributed by Apple Computer Inc. | |
5 | ||
7ec022b2 | 6 | This file is part of GCC. |
ee890fe2 | 7 | |
7ec022b2 | 8 | GCC is free software; you can redistribute it and/or modify |
ee890fe2 SS |
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 | ||
7ec022b2 | 13 | GCC is distributed in the hope that it will be useful, |
ee890fe2 SS |
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 | |
7ec022b2 | 19 | along with GCC; see the file COPYING. If not, write to |
ee890fe2 SS |
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" | |
4977bab6 ZW |
25 | #include "coretypes.h" |
26 | #include "tm.h" | |
ee890fe2 SS |
27 | #include "rtl.h" |
28 | #include "regs.h" | |
29 | #include "hard-reg-set.h" | |
30 | #include "real.h" | |
31 | #include "insn-config.h" | |
32 | #include "conditions.h" | |
33 | #include "insn-flags.h" | |
34 | #include "output.h" | |
35 | #include "insn-attr.h" | |
36 | #include "flags.h" | |
37 | #include "tree.h" | |
38 | #include "expr.h" | |
39 | #include "reload.h" | |
ee890fe2 SS |
40 | #include "function.h" |
41 | #include "ggc.h" | |
3ac88239 | 42 | #include "langhooks.h" |
245ff137 | 43 | #include "tm_p.h" |
ee890fe2 | 44 | |
9c808aad AJ |
45 | static int machopic_data_defined_p (const char *); |
46 | static void update_non_lazy_ptrs (const char *); | |
47 | static void update_stubs (const char *); | |
6f94a68e | 48 | static const char *machopic_non_lazy_ptr_name (const char*); |
ee890fe2 | 49 | |
ee890fe2 | 50 | int |
9c808aad | 51 | name_needs_quotes (const char *name) |
ee890fe2 SS |
52 | { |
53 | int c; | |
54 | while ((c = *name++) != '\0') | |
6f94a68e | 55 | if (! ISIDNUM (c) && c != '.' && c != '$') |
ee890fe2 SS |
56 | return 1; |
57 | return 0; | |
58 | } | |
59 | ||
9c808aad | 60 | /* |
ee890fe2 SS |
61 | * flag_pic = 1 ... generate only indirections |
62 | * flag_pic = 2 ... generate indirections and pure code | |
63 | */ | |
64 | ||
65 | /* This module assumes that (const (symbol_ref "foo")) is a legal pic | |
66 | reference, which will not be changed. */ | |
67 | ||
e2500fed | 68 | static GTY(()) tree machopic_defined_list; |
ee890fe2 SS |
69 | |
70 | enum machopic_addr_class | |
9c808aad | 71 | machopic_classify_ident (tree ident) |
ee890fe2 SS |
72 | { |
73 | const char *name = IDENTIFIER_POINTER (ident); | |
74 | int lprefix = (((name[0] == '*' || name[0] == '&') | |
75 | && (name[1] == 'L' || (name[1] == '"' && name[2] == 'L'))) | |
9c808aad AJ |
76 | || ( name[0] == '_' |
77 | && name[1] == 'O' | |
78 | && name[2] == 'B' | |
ee890fe2 SS |
79 | && name[3] == 'J' |
80 | && name[4] == 'C' | |
81 | && name[5] == '_')); | |
df56a27f | 82 | tree temp; |
9c808aad | 83 | |
1622229c AP |
84 | /* The PIC base symbol is always defined. */ |
85 | if (! strcmp (name, "<pic base>")) | |
86 | return MACHOPIC_DEFINED_DATA; | |
ee890fe2 | 87 | |
df56a27f | 88 | if (name[0] != '!') |
ee890fe2 | 89 | { |
df56a27f | 90 | /* Here if no special encoding to be found. */ |
ee890fe2 SS |
91 | if (lprefix) |
92 | { | |
93 | const char *name = IDENTIFIER_POINTER (ident); | |
94 | int len = strlen (name); | |
95 | ||
96 | if ((len > 5 && !strcmp (name + len - 5, "$stub")) | |
97 | || (len > 6 && !strcmp (name + len - 6, "$stub\""))) | |
98 | return MACHOPIC_DEFINED_FUNCTION; | |
99 | return MACHOPIC_DEFINED_DATA; | |
100 | } | |
101 | ||
102 | for (temp = machopic_defined_list; | |
103 | temp != NULL_TREE; | |
104 | temp = TREE_CHAIN (temp)) | |
105 | { | |
106 | if (ident == TREE_VALUE (temp)) | |
107 | return MACHOPIC_DEFINED_DATA; | |
108 | } | |
109 | ||
110 | if (TREE_ASM_WRITTEN (ident)) | |
111 | return MACHOPIC_DEFINED_DATA; | |
112 | ||
113 | return MACHOPIC_UNDEFINED; | |
114 | } | |
115 | ||
df56a27f SS |
116 | else if (name[1] == 'D') |
117 | return MACHOPIC_DEFINED_DATA; | |
ee890fe2 | 118 | |
df56a27f SS |
119 | else if (name[1] == 'T') |
120 | return MACHOPIC_DEFINED_FUNCTION; | |
ee890fe2 | 121 | |
b7fb9feb TC |
122 | /* It is possible that someone is holding a "stale" name, which has |
123 | since been defined. See if there is a "defined" name (i.e, | |
124 | different from NAME only in having a '!D_' or a '!T_' instead of | |
125 | a '!d_' or '!t_' prefix) in the identifier hash tables. If so, say | |
126 | that this identifier is defined. */ | |
127 | else if (name[1] == 'd' || name[1] == 't') | |
128 | { | |
129 | char *new_name; | |
130 | new_name = (char *)alloca (strlen (name) + 1); | |
131 | strcpy (new_name, name); | |
132 | new_name[1] = (name[1] == 'd') ? 'D' : 'T'; | |
133 | if (maybe_get_identifier (new_name) != NULL) | |
134 | return (name[1] == 'd') ? MACHOPIC_DEFINED_DATA | |
135 | : MACHOPIC_DEFINED_FUNCTION; | |
136 | } | |
137 | ||
ee890fe2 SS |
138 | for (temp = machopic_defined_list; temp != NULL_TREE; temp = TREE_CHAIN (temp)) |
139 | { | |
140 | if (ident == TREE_VALUE (temp)) | |
141 | { | |
df56a27f | 142 | if (name[1] == 'T') |
ee890fe2 SS |
143 | return MACHOPIC_DEFINED_FUNCTION; |
144 | else | |
145 | return MACHOPIC_DEFINED_DATA; | |
146 | } | |
147 | } | |
9c808aad | 148 | |
df56a27f | 149 | if (name[1] == 't' || name[1] == 'T') |
ee890fe2 SS |
150 | { |
151 | if (lprefix) | |
152 | return MACHOPIC_DEFINED_FUNCTION; | |
153 | else | |
154 | return MACHOPIC_UNDEFINED_FUNCTION; | |
155 | } | |
156 | else | |
157 | { | |
158 | if (lprefix) | |
159 | return MACHOPIC_DEFINED_DATA; | |
160 | else | |
161 | return MACHOPIC_UNDEFINED_DATA; | |
162 | } | |
163 | } | |
164 | ||
9c808aad | 165 | |
ee890fe2 | 166 | enum machopic_addr_class |
9c808aad | 167 | machopic_classify_name (const char *name) |
ee890fe2 SS |
168 | { |
169 | return machopic_classify_ident (get_identifier (name)); | |
170 | } | |
171 | ||
172 | int | |
9c808aad | 173 | machopic_ident_defined_p (tree ident) |
ee890fe2 SS |
174 | { |
175 | switch (machopic_classify_ident (ident)) | |
176 | { | |
177 | case MACHOPIC_UNDEFINED: | |
178 | case MACHOPIC_UNDEFINED_DATA: | |
179 | case MACHOPIC_UNDEFINED_FUNCTION: | |
180 | return 0; | |
181 | default: | |
182 | return 1; | |
183 | } | |
184 | } | |
185 | ||
186 | static int | |
9c808aad | 187 | machopic_data_defined_p (const char *name) |
ee890fe2 SS |
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 | |
9c808aad | 199 | machopic_name_defined_p (const char *name) |
ee890fe2 SS |
200 | { |
201 | return machopic_ident_defined_p (get_identifier (name)); | |
202 | } | |
203 | ||
204 | void | |
9c808aad | 205 | machopic_define_ident (tree ident) |
ee890fe2 SS |
206 | { |
207 | if (!machopic_ident_defined_p (ident)) | |
9c808aad | 208 | machopic_defined_list = |
ee890fe2 SS |
209 | tree_cons (NULL_TREE, ident, machopic_defined_list); |
210 | } | |
211 | ||
212 | void | |
9c808aad | 213 | machopic_define_name (const char *name) |
ee890fe2 SS |
214 | { |
215 | machopic_define_ident (get_identifier (name)); | |
216 | } | |
217 | ||
6788f5ca | 218 | static GTY(()) char * function_base; |
ee890fe2 | 219 | |
92c1a778 | 220 | const char * |
9c808aad | 221 | machopic_function_base_name (void) |
ee890fe2 | 222 | { |
6788f5ca | 223 | const char *current_name; |
ab82a49f AP |
224 | /* if dynamic-no-pic is on, we should not get here */ |
225 | if (MACHO_DYNAMIC_NO_PIC_P) | |
226 | abort (); | |
9c808aad | 227 | current_name = |
6788f5ca | 228 | IDENTIFIER_POINTER (DECL_ASSEMBLER_NAME (current_function_decl)); |
ee890fe2 | 229 | |
1622229c | 230 | if (function_base == NULL) |
9c808aad | 231 | function_base = |
1622229c AP |
232 | (char *) ggc_alloc_string ("<pic base>", sizeof ("<pic base>")); |
233 | ||
234 | current_function_uses_pic_offset_table = 1; | |
235 | ||
236 | return function_base; | |
237 | } | |
238 | ||
239 | static GTY(()) const char * function_base_func_name; | |
240 | static GTY(()) int current_pic_label_num; | |
241 | ||
242 | void | |
243 | machopic_output_function_base_name (FILE *file) | |
244 | { | |
245 | const char *current_name; | |
246 | ||
247 | /* If dynamic-no-pic is on, we should not get here. */ | |
248 | if (MACHO_DYNAMIC_NO_PIC_P) | |
249 | abort (); | |
9c808aad | 250 | current_name = |
1622229c | 251 | IDENTIFIER_POINTER (DECL_ASSEMBLER_NAME (current_function_decl)); |
6788f5ca | 252 | if (function_base_func_name != current_name) |
ee890fe2 | 253 | { |
ee890fe2 | 254 | ++current_pic_label_num; |
6788f5ca | 255 | function_base_func_name = current_name; |
ee890fe2 | 256 | } |
1622229c | 257 | fprintf (file, "\"L%011d$pb\"", current_pic_label_num); |
ee890fe2 SS |
258 | } |
259 | ||
e2500fed | 260 | static GTY(()) tree machopic_non_lazy_pointers; |
ee890fe2 SS |
261 | |
262 | /* Return a non-lazy pointer name corresponding to the given name, | |
263 | either by finding it in our list of pointer names, or by generating | |
264 | a new one. */ | |
265 | ||
6f94a68e | 266 | static const char * |
9c808aad | 267 | machopic_non_lazy_ptr_name (const char *name) |
ee890fe2 | 268 | { |
7ae8cf75 | 269 | const char *temp_name; |
ee890fe2 | 270 | tree temp, ident = get_identifier (name); |
9c808aad | 271 | |
ee890fe2 | 272 | for (temp = machopic_non_lazy_pointers; |
9c808aad | 273 | temp != NULL_TREE; |
ee890fe2 SS |
274 | temp = TREE_CHAIN (temp)) |
275 | { | |
276 | if (ident == TREE_VALUE (temp)) | |
277 | return IDENTIFIER_POINTER (TREE_PURPOSE (temp)); | |
278 | } | |
279 | ||
772c5265 | 280 | name = darwin_strip_name_encoding (name); |
df56a27f SS |
281 | |
282 | /* Try again, but comparing names this time. */ | |
283 | for (temp = machopic_non_lazy_pointers; | |
9c808aad | 284 | temp != NULL_TREE; |
df56a27f SS |
285 | temp = TREE_CHAIN (temp)) |
286 | { | |
287 | if (TREE_VALUE (temp)) | |
288 | { | |
289 | temp_name = IDENTIFIER_POINTER (TREE_VALUE (temp)); | |
772c5265 | 290 | temp_name = darwin_strip_name_encoding (temp_name); |
df56a27f SS |
291 | if (strcmp (name, temp_name) == 0) |
292 | return IDENTIFIER_POINTER (TREE_PURPOSE (temp)); | |
293 | } | |
294 | } | |
295 | ||
ee890fe2 SS |
296 | { |
297 | char *buffer; | |
6e08ecd1 AP |
298 | int namelen = strlen (name); |
299 | int bufferlen = 0; | |
ee890fe2 SS |
300 | tree ptr_name; |
301 | ||
6e08ecd1 | 302 | buffer = alloca (namelen + strlen("$non_lazy_ptr") + 5); |
ee890fe2 SS |
303 | |
304 | strcpy (buffer, "&L"); | |
6e08ecd1 | 305 | bufferlen = 2; |
ee890fe2 | 306 | if (name[0] == '*') |
6e08ecd1 | 307 | { |
77a7ed60 | 308 | memcpy (buffer + bufferlen, name+1, namelen-1+1); |
6e08ecd1 AP |
309 | bufferlen += namelen-1; |
310 | } | |
ee890fe2 SS |
311 | else |
312 | { | |
6e08ecd1 | 313 | buffer[bufferlen] = '_'; |
77a7ed60 | 314 | memcpy (buffer + bufferlen +1, name, namelen+1); |
75f60443 | 315 | bufferlen += namelen +1; |
ee890fe2 | 316 | } |
9c808aad | 317 | |
77a7ed60 | 318 | memcpy (buffer + bufferlen, "$non_lazy_ptr", strlen("$non_lazy_ptr")+1); |
6e08ecd1 | 319 | bufferlen += strlen("$non_lazy_ptr"); |
ee890fe2 SS |
320 | ptr_name = get_identifier (buffer); |
321 | ||
9c808aad | 322 | machopic_non_lazy_pointers |
ee890fe2 SS |
323 | = tree_cons (ptr_name, ident, machopic_non_lazy_pointers); |
324 | ||
325 | TREE_USED (machopic_non_lazy_pointers) = 0; | |
326 | ||
327 | return IDENTIFIER_POINTER (ptr_name); | |
328 | } | |
329 | } | |
330 | ||
e2500fed | 331 | static GTY(()) tree machopic_stubs; |
ee890fe2 SS |
332 | |
333 | /* Return the name of the stub corresponding to the given name, | |
334 | generating a new stub name if necessary. */ | |
335 | ||
9c808aad AJ |
336 | const char * |
337 | machopic_stub_name (const char *name) | |
ee890fe2 SS |
338 | { |
339 | tree temp, ident = get_identifier (name); | |
93913281 SS |
340 | const char *tname; |
341 | ||
ee890fe2 | 342 | for (temp = machopic_stubs; |
9c808aad | 343 | temp != NULL_TREE; |
ee890fe2 SS |
344 | temp = TREE_CHAIN (temp)) |
345 | { | |
346 | if (ident == TREE_VALUE (temp)) | |
347 | return IDENTIFIER_POINTER (TREE_PURPOSE (temp)); | |
93913281 SS |
348 | tname = IDENTIFIER_POINTER (TREE_VALUE (temp)); |
349 | if (strcmp (name, tname) == 0) | |
350 | return IDENTIFIER_POINTER (TREE_PURPOSE (temp)); | |
351 | /* A library call name might not be section-encoded yet, so try | |
352 | it against a stripped name. */ | |
353 | if (name[0] != '!' | |
354 | && tname[0] == '!' | |
355 | && strcmp (name, tname + 4) == 0) | |
4e08ba6c | 356 | return IDENTIFIER_POINTER (TREE_PURPOSE (temp)); |
ee890fe2 SS |
357 | } |
358 | ||
772c5265 | 359 | name = darwin_strip_name_encoding (name); |
df56a27f | 360 | |
ee890fe2 SS |
361 | { |
362 | char *buffer; | |
6e08ecd1 AP |
363 | int bufferlen = 0; |
364 | int namelen = strlen (name); | |
ee890fe2 SS |
365 | tree ptr_name; |
366 | int needs_quotes = name_needs_quotes (name); | |
367 | ||
6e08ecd1 | 368 | buffer = alloca (namelen + 20); |
ee890fe2 SS |
369 | |
370 | if (needs_quotes) | |
6e08ecd1 AP |
371 | { |
372 | strcpy (buffer, "&\"L"); | |
373 | bufferlen = strlen("&\"L"); | |
374 | } | |
ee890fe2 | 375 | else |
6e08ecd1 AP |
376 | { |
377 | strcpy (buffer, "&L"); | |
378 | bufferlen = strlen("&L"); | |
379 | } | |
380 | ||
ee890fe2 SS |
381 | if (name[0] == '*') |
382 | { | |
77a7ed60 | 383 | memcpy (buffer + bufferlen, name+1, namelen - 1 +1); |
6e08ecd1 | 384 | bufferlen += namelen - 1; |
ee890fe2 SS |
385 | } |
386 | else | |
387 | { | |
6e08ecd1 | 388 | buffer[bufferlen] = '_'; |
77a7ed60 | 389 | memcpy (buffer + bufferlen +1, name, namelen+1); |
75f60443 | 390 | bufferlen += namelen +1; |
ee890fe2 SS |
391 | } |
392 | ||
393 | if (needs_quotes) | |
6e08ecd1 | 394 | { |
77a7ed60 | 395 | memcpy (buffer + bufferlen, "$stub\"", strlen("$stub\"")+1); |
6e08ecd1 AP |
396 | bufferlen += strlen("$stub\""); |
397 | } | |
ee890fe2 | 398 | else |
6e08ecd1 | 399 | { |
77a7ed60 | 400 | memcpy (buffer + bufferlen, "$stub", strlen("$stub")+1); |
6e08ecd1 AP |
401 | bufferlen += strlen("$stub"); |
402 | } | |
ee890fe2 SS |
403 | ptr_name = get_identifier (buffer); |
404 | ||
405 | machopic_stubs = tree_cons (ptr_name, ident, machopic_stubs); | |
406 | TREE_USED (machopic_stubs) = 0; | |
407 | ||
408 | return IDENTIFIER_POINTER (ptr_name); | |
409 | } | |
410 | } | |
411 | ||
412 | void | |
9c808aad | 413 | machopic_validate_stub_or_non_lazy_ptr (const char *name, int validate_stub) |
ee890fe2 | 414 | { |
7ae8cf75 | 415 | const char *real_name; |
df56a27f | 416 | tree temp, ident = get_identifier (name), id2; |
ee890fe2 SS |
417 | |
418 | for (temp = (validate_stub ? machopic_stubs : machopic_non_lazy_pointers); | |
419 | temp != NULL_TREE; | |
420 | temp = TREE_CHAIN (temp)) | |
421 | if (ident == TREE_PURPOSE (temp)) | |
422 | { | |
423 | /* Mark both the stub or non-lazy pointer as well as the | |
424 | original symbol as being referenced. */ | |
425 | TREE_USED (temp) = 1; | |
426 | if (TREE_CODE (TREE_VALUE (temp)) == IDENTIFIER_NODE) | |
af0f185b | 427 | mark_referenced (TREE_VALUE (temp)); |
772c5265 RH |
428 | real_name = IDENTIFIER_POINTER (TREE_VALUE (temp)); |
429 | real_name = darwin_strip_name_encoding (real_name); | |
df56a27f SS |
430 | id2 = maybe_get_identifier (real_name); |
431 | if (id2) | |
af0f185b | 432 | mark_referenced (id2); |
ee890fe2 SS |
433 | } |
434 | } | |
435 | ||
436 | /* Transform ORIG, which may be any data source, to the corresponding | |
437 | source using indirections. */ | |
438 | ||
439 | rtx | |
9c808aad | 440 | machopic_indirect_data_reference (rtx orig, rtx reg) |
ee890fe2 SS |
441 | { |
442 | rtx ptr_ref = orig; | |
9c808aad | 443 | |
ee890fe2 SS |
444 | if (! MACHOPIC_INDIRECT) |
445 | return orig; | |
446 | ||
447 | if (GET_CODE (orig) == SYMBOL_REF) | |
448 | { | |
449 | const char *name = XSTR (orig, 0); | |
ab82a49f AP |
450 | int defined = machopic_data_defined_p (name); |
451 | ||
452 | if (defined && MACHO_DYNAMIC_NO_PIC_P) | |
453 | { | |
454 | #if defined (TARGET_TOC) | |
9c808aad | 455 | emit_insn (gen_macho_high (reg, orig)); |
ab82a49f AP |
456 | emit_insn (gen_macho_low (reg, reg, orig)); |
457 | #else | |
458 | /* some other cpu -- writeme! */ | |
459 | abort (); | |
460 | #endif | |
461 | return reg; | |
462 | } | |
463 | else if (defined) | |
ee890fe2 | 464 | { |
7ae8cf75 | 465 | #if defined (TARGET_TOC) || defined (HAVE_lo_sum) |
6f94a68e GK |
466 | rtx pic_base = gen_rtx_SYMBOL_REF (Pmode, |
467 | machopic_function_base_name ()); | |
468 | rtx offset = gen_rtx_CONST (Pmode, | |
469 | gen_rtx_MINUS (Pmode, orig, pic_base)); | |
7ae8cf75 | 470 | #endif |
ee890fe2 SS |
471 | |
472 | #if defined (TARGET_TOC) /* i.e., PowerPC */ | |
d9b46dfb | 473 | rtx hi_sum_reg = (no_new_pseudos ? reg : gen_reg_rtx (Pmode)); |
ee890fe2 SS |
474 | |
475 | if (reg == NULL) | |
476 | abort (); | |
477 | ||
6f94a68e GK |
478 | emit_insn (gen_rtx_SET (Pmode, hi_sum_reg, |
479 | gen_rtx_PLUS (Pmode, pic_offset_table_rtx, | |
480 | gen_rtx_HIGH (Pmode, offset)))); | |
481 | emit_insn (gen_rtx_SET (Pmode, reg, | |
482 | gen_rtx_LO_SUM (Pmode, hi_sum_reg, offset))); | |
ee890fe2 SS |
483 | |
484 | orig = reg; | |
485 | #else | |
486 | #if defined (HAVE_lo_sum) | |
487 | if (reg == 0) abort (); | |
488 | ||
6f94a68e GK |
489 | emit_insn (gen_rtx_SET (VOIDmode, reg, |
490 | gen_rtx_HIGH (Pmode, offset))); | |
491 | emit_insn (gen_rtx_SET (VOIDmode, reg, | |
492 | gen_rtx_LO_SUM (Pmode, reg, offset))); | |
493 | emit_insn (gen_rtx_USE (VOIDmode, pic_offset_table_rtx)); | |
ee890fe2 | 494 | |
6f94a68e | 495 | orig = gen_rtx_PLUS (Pmode, pic_offset_table_rtx, reg); |
ee890fe2 SS |
496 | #endif |
497 | #endif | |
498 | return orig; | |
499 | } | |
500 | ||
6f94a68e GK |
501 | ptr_ref = gen_rtx_SYMBOL_REF (Pmode, |
502 | machopic_non_lazy_ptr_name (name)); | |
ee890fe2 SS |
503 | |
504 | ptr_ref = gen_rtx_MEM (Pmode, ptr_ref); | |
505 | RTX_UNCHANGING_P (ptr_ref) = 1; | |
506 | ||
507 | return ptr_ref; | |
508 | } | |
509 | else if (GET_CODE (orig) == CONST) | |
510 | { | |
511 | rtx base, result; | |
512 | ||
513 | /* legitimize both operands of the PLUS */ | |
514 | if (GET_CODE (XEXP (orig, 0)) == PLUS) | |
515 | { | |
516 | base = machopic_indirect_data_reference (XEXP (XEXP (orig, 0), 0), | |
517 | reg); | |
518 | orig = machopic_indirect_data_reference (XEXP (XEXP (orig, 0), 1), | |
519 | (base == reg ? 0 : reg)); | |
520 | } | |
9c808aad | 521 | else |
ee890fe2 SS |
522 | return orig; |
523 | ||
524 | if (MACHOPIC_PURE && GET_CODE (orig) == CONST_INT) | |
ed8908e7 | 525 | result = plus_constant (base, INTVAL (orig)); |
ee890fe2 | 526 | else |
6f94a68e | 527 | result = gen_rtx_PLUS (Pmode, base, orig); |
ee890fe2 | 528 | |
ee890fe2 SS |
529 | if (MACHOPIC_JUST_INDIRECT && GET_CODE (base) == MEM) |
530 | { | |
531 | if (reg) | |
532 | { | |
533 | emit_move_insn (reg, result); | |
534 | result = reg; | |
535 | } | |
536 | else | |
537 | { | |
538 | result = force_reg (GET_MODE (result), result); | |
539 | } | |
540 | } | |
541 | ||
542 | return result; | |
543 | ||
544 | } | |
545 | else if (GET_CODE (orig) == MEM) | |
546 | XEXP (ptr_ref, 0) = machopic_indirect_data_reference (XEXP (orig, 0), reg); | |
547 | /* When the target is i386, this code prevents crashes due to the | |
548 | compiler's ignorance on how to move the PIC base register to | |
549 | other registers. (The reload phase sometimes introduces such | |
550 | insns.) */ | |
551 | else if (GET_CODE (orig) == PLUS | |
552 | && GET_CODE (XEXP (orig, 0)) == REG | |
553 | && REGNO (XEXP (orig, 0)) == PIC_OFFSET_TABLE_REGNUM | |
554 | #ifdef I386 | |
555 | /* Prevent the same register from being erroneously used | |
556 | as both the base and index registers. */ | |
557 | && GET_CODE (XEXP (orig, 1)) == CONST | |
558 | #endif | |
559 | && reg) | |
560 | { | |
561 | emit_move_insn (reg, XEXP (orig, 0)); | |
562 | XEXP (ptr_ref, 0) = reg; | |
563 | } | |
564 | return ptr_ref; | |
565 | } | |
566 | ||
ee890fe2 SS |
567 | /* Transform TARGET (a MEM), which is a function call target, to the |
568 | corresponding symbol_stub if necessary. Return a new MEM. */ | |
569 | ||
570 | rtx | |
9c808aad | 571 | machopic_indirect_call_target (rtx target) |
ee890fe2 SS |
572 | { |
573 | if (GET_CODE (target) != MEM) | |
574 | return target; | |
575 | ||
576 | if (MACHOPIC_INDIRECT && GET_CODE (XEXP (target, 0)) == SYMBOL_REF) | |
9c808aad | 577 | { |
ee890fe2 SS |
578 | enum machine_mode mode = GET_MODE (XEXP (target, 0)); |
579 | const char *name = XSTR (XEXP (target, 0), 0); | |
580 | ||
b7fb9feb TC |
581 | /* If the name is already defined, we need do nothing. */ |
582 | if (name[0] == '!' && name[1] == 'T') | |
583 | return target; | |
584 | ||
585 | if (!machopic_name_defined_p (name)) | |
ee890fe2 SS |
586 | { |
587 | const char *stub_name = machopic_stub_name (name); | |
588 | ||
6f94a68e | 589 | XEXP (target, 0) = gen_rtx_SYMBOL_REF (mode, stub_name); |
ee890fe2 | 590 | RTX_UNCHANGING_P (target) = 1; |
9c808aad | 591 | } |
ee890fe2 SS |
592 | } |
593 | ||
594 | return target; | |
595 | } | |
596 | ||
597 | rtx | |
9c808aad | 598 | machopic_legitimize_pic_address (rtx orig, enum machine_mode mode, rtx reg) |
ee890fe2 SS |
599 | { |
600 | rtx pic_ref = orig; | |
601 | ||
ab82a49f | 602 | if (! MACHOPIC_INDIRECT) |
ee890fe2 SS |
603 | return orig; |
604 | ||
605 | /* First handle a simple SYMBOL_REF or LABEL_REF */ | |
606 | if (GET_CODE (orig) == LABEL_REF | |
607 | || (GET_CODE (orig) == SYMBOL_REF | |
608 | )) | |
609 | { | |
610 | /* addr(foo) = &func+(foo-func) */ | |
611 | rtx pic_base; | |
612 | ||
613 | orig = machopic_indirect_data_reference (orig, reg); | |
614 | ||
9c808aad | 615 | if (GET_CODE (orig) == PLUS |
ee890fe2 SS |
616 | && GET_CODE (XEXP (orig, 0)) == REG) |
617 | { | |
618 | if (reg == 0) | |
619 | return force_reg (mode, orig); | |
620 | ||
621 | emit_move_insn (reg, orig); | |
622 | return reg; | |
9c808aad | 623 | } |
ee890fe2 | 624 | |
ab82a49f AP |
625 | /* if dynamic-no-pic then use 0 as the pic base */ |
626 | if (MACHO_DYNAMIC_NO_PIC_P) | |
627 | pic_base = CONST0_RTX (Pmode); | |
628 | else | |
6f94a68e | 629 | pic_base = gen_rtx_SYMBOL_REF (Pmode, machopic_function_base_name ()); |
ee890fe2 SS |
630 | |
631 | if (GET_CODE (orig) == MEM) | |
632 | { | |
633 | if (reg == 0) | |
634 | { | |
635 | if (reload_in_progress) | |
636 | abort (); | |
637 | else | |
638 | reg = gen_reg_rtx (Pmode); | |
639 | } | |
9c808aad | 640 | |
ee890fe2 | 641 | #ifdef HAVE_lo_sum |
ab82a49f AP |
642 | if (MACHO_DYNAMIC_NO_PIC_P |
643 | && (GET_CODE (XEXP (orig, 0)) == SYMBOL_REF | |
644 | || GET_CODE (XEXP (orig, 0)) == LABEL_REF)) | |
645 | { | |
646 | #if defined (TARGET_TOC) /* ppc */ | |
647 | rtx temp_reg = (no_new_pseudos) ? reg : gen_reg_rtx (Pmode); | |
648 | rtx asym = XEXP (orig, 0); | |
649 | rtx mem; | |
650 | ||
651 | emit_insn (gen_macho_high (temp_reg, asym)); | |
652 | mem = gen_rtx_MEM (GET_MODE (orig), | |
6f94a68e | 653 | gen_rtx_LO_SUM (Pmode, temp_reg, asym)); |
ab82a49f | 654 | RTX_UNCHANGING_P (mem) = 1; |
6f94a68e | 655 | emit_insn (gen_rtx_SET (VOIDmode, reg, mem)); |
ab82a49f AP |
656 | #else |
657 | /* Some other CPU -- WriteMe! but right now there are no other platform that can use dynamic-no-pic */ | |
658 | abort (); | |
659 | #endif | |
660 | pic_ref = reg; | |
661 | } | |
662 | else | |
9c808aad | 663 | if (GET_CODE (XEXP (orig, 0)) == SYMBOL_REF |
ee890fe2 SS |
664 | || GET_CODE (XEXP (orig, 0)) == LABEL_REF) |
665 | { | |
6f94a68e GK |
666 | rtx offset = gen_rtx_CONST (Pmode, |
667 | gen_rtx_MINUS (Pmode, | |
668 | XEXP (orig, 0), | |
669 | pic_base)); | |
ee890fe2 SS |
670 | #if defined (TARGET_TOC) /* i.e., PowerPC */ |
671 | /* Generating a new reg may expose opportunities for | |
672 | common subexpression elimination. */ | |
6f94a68e GK |
673 | rtx hi_sum_reg = no_new_pseudos ? reg : gen_reg_rtx (SImode); |
674 | rtx mem; | |
675 | rtx insn; | |
676 | rtx sum; | |
677 | ||
678 | sum = gen_rtx_HIGH (Pmode, offset); | |
679 | if (! MACHO_DYNAMIC_NO_PIC_P) | |
680 | sum = gen_rtx_PLUS (Pmode, pic_offset_table_rtx, sum); | |
ee890fe2 | 681 | |
6f94a68e GK |
682 | emit_insn (gen_rtx_SET (Pmode, hi_sum_reg, sum)); |
683 | ||
684 | mem = gen_rtx_MEM (GET_MODE (orig), | |
685 | gen_rtx_LO_SUM (Pmode, | |
686 | hi_sum_reg, offset)); | |
687 | RTX_UNCHANGING_P (mem) = 1; | |
688 | insn = emit_insn (gen_rtx_SET (VOIDmode, reg, mem)); | |
689 | REG_NOTES (insn) = gen_rtx_EXPR_LIST (REG_EQUAL, pic_ref, | |
690 | REG_NOTES (insn)); | |
691 | ||
692 | pic_ref = reg; | |
ee890fe2 | 693 | #else |
6f94a68e GK |
694 | emit_insn (gen_rtx_USE (VOIDmode, |
695 | gen_rtx_REG (Pmode, | |
696 | PIC_OFFSET_TABLE_REGNUM))); | |
697 | ||
698 | emit_insn (gen_rtx_SET (VOIDmode, reg, | |
699 | gen_rtx_HIGH (Pmode, | |
700 | gen_rtx_CONST (Pmode, | |
701 | offset)))); | |
702 | emit_insn (gen_rtx_SET (VOIDmode, reg, | |
703 | gen_rtx_LO_SUM (Pmode, reg, | |
704 | gen_rtx_CONST (Pmode, offset)))); | |
705 | pic_ref = gen_rtx_PLUS (Pmode, | |
706 | pic_offset_table_rtx, reg); | |
ee890fe2 SS |
707 | #endif |
708 | } | |
709 | else | |
710 | #endif /* HAVE_lo_sum */ | |
711 | { | |
712 | rtx pic = pic_offset_table_rtx; | |
713 | if (GET_CODE (pic) != REG) | |
714 | { | |
715 | emit_move_insn (reg, pic); | |
716 | pic = reg; | |
717 | } | |
718 | #if 0 | |
6f94a68e GK |
719 | emit_insn (gen_rtx_USE (VOIDmode, |
720 | gen_rtx_REG (Pmode, | |
721 | PIC_OFFSET_TABLE_REGNUM))); | |
ee890fe2 SS |
722 | #endif |
723 | ||
6f94a68e GK |
724 | pic_ref = gen_rtx_PLUS (Pmode, |
725 | pic, | |
726 | gen_rtx_CONST (Pmode, | |
727 | gen_rtx_MINUS (Pmode, | |
728 | XEXP (orig, 0), | |
729 | pic_base))); | |
ee890fe2 | 730 | } |
9c808aad | 731 | |
ee890fe2 | 732 | #if !defined (TARGET_TOC) |
ee890fe2 | 733 | emit_move_insn (reg, pic_ref); |
6f94a68e | 734 | pic_ref = gen_rtx_MEM (GET_MODE (orig), reg); |
ee890fe2 | 735 | #endif |
b069de3b | 736 | RTX_UNCHANGING_P (pic_ref) = 1; |
ee890fe2 SS |
737 | } |
738 | else | |
739 | { | |
740 | ||
741 | #ifdef HAVE_lo_sum | |
9c808aad | 742 | if (GET_CODE (orig) == SYMBOL_REF |
ee890fe2 SS |
743 | || GET_CODE (orig) == LABEL_REF) |
744 | { | |
6f94a68e GK |
745 | rtx offset = gen_rtx_CONST (Pmode, |
746 | gen_rtx_MINUS (Pmode, | |
747 | orig, pic_base)); | |
ee890fe2 SS |
748 | #if defined (TARGET_TOC) /* i.e., PowerPC */ |
749 | rtx hi_sum_reg; | |
750 | ||
751 | if (reg == 0) | |
752 | { | |
753 | if (reload_in_progress) | |
754 | abort (); | |
755 | else | |
756 | reg = gen_reg_rtx (SImode); | |
757 | } | |
9c808aad | 758 | |
ee890fe2 SS |
759 | hi_sum_reg = reg; |
760 | ||
6f94a68e GK |
761 | emit_insn (gen_rtx_SET (Pmode, hi_sum_reg, |
762 | (MACHO_DYNAMIC_NO_PIC_P) | |
763 | ? gen_rtx_HIGH (Pmode, offset) | |
764 | : gen_rtx_PLUS (Pmode, | |
765 | pic_offset_table_rtx, | |
766 | gen_rtx_HIGH (Pmode, | |
767 | offset)))); | |
768 | emit_insn (gen_rtx_SET (VOIDmode, reg, | |
769 | gen_rtx_LO_SUM (Pmode, | |
770 | hi_sum_reg, offset))); | |
ee890fe2 | 771 | pic_ref = reg; |
b069de3b | 772 | RTX_UNCHANGING_P (pic_ref) = 1; |
ee890fe2 | 773 | #else |
6f94a68e GK |
774 | emit_insn (gen_rtx_SET (VOIDmode, reg, |
775 | gen_rtx_HIGH (Pmode, offset))); | |
776 | emit_insn (gen_rtx_SET (VOIDmode, reg, | |
777 | gen_rtx_LO_SUM (Pmode, reg, offset))); | |
778 | pic_ref = gen_rtx_PLUS (Pmode, | |
779 | pic_offset_table_rtx, reg); | |
b069de3b | 780 | RTX_UNCHANGING_P (pic_ref) = 1; |
ee890fe2 SS |
781 | #endif |
782 | } | |
783 | else | |
784 | #endif /* HAVE_lo_sum */ | |
785 | { | |
786 | if (GET_CODE (orig) == REG) | |
787 | { | |
788 | return orig; | |
789 | } | |
790 | else | |
791 | { | |
792 | rtx pic = pic_offset_table_rtx; | |
793 | if (GET_CODE (pic) != REG) | |
794 | { | |
795 | emit_move_insn (reg, pic); | |
796 | pic = reg; | |
797 | } | |
798 | #if 0 | |
6f94a68e GK |
799 | emit_insn (gen_rtx_USE (VOIDmode, |
800 | pic_offset_table_rtx)); | |
ee890fe2 | 801 | #endif |
6f94a68e GK |
802 | pic_ref = gen_rtx_PLUS (Pmode, |
803 | pic, | |
804 | gen_rtx_CONST (Pmode, | |
805 | gen_rtx_MINUS (Pmode, | |
806 | orig, pic_base))); | |
ee890fe2 SS |
807 | } |
808 | } | |
809 | } | |
810 | ||
ee890fe2 SS |
811 | if (GET_CODE (pic_ref) != REG) |
812 | { | |
813 | if (reg != 0) | |
814 | { | |
815 | emit_move_insn (reg, pic_ref); | |
816 | return reg; | |
817 | } | |
818 | else | |
819 | { | |
820 | return force_reg (mode, pic_ref); | |
821 | } | |
822 | } | |
823 | else | |
824 | { | |
825 | return pic_ref; | |
826 | } | |
827 | } | |
828 | ||
829 | else if (GET_CODE (orig) == SYMBOL_REF) | |
830 | return orig; | |
831 | ||
832 | else if (GET_CODE (orig) == PLUS | |
833 | && (GET_CODE (XEXP (orig, 0)) == MEM | |
834 | || GET_CODE (XEXP (orig, 0)) == SYMBOL_REF | |
835 | || GET_CODE (XEXP (orig, 0)) == LABEL_REF) | |
836 | && XEXP (orig, 0) != pic_offset_table_rtx | |
837 | && GET_CODE (XEXP (orig, 1)) != REG) | |
9c808aad | 838 | |
ee890fe2 SS |
839 | { |
840 | rtx base; | |
841 | int is_complex = (GET_CODE (XEXP (orig, 0)) == MEM); | |
842 | ||
843 | base = machopic_legitimize_pic_address (XEXP (orig, 0), Pmode, reg); | |
844 | orig = machopic_legitimize_pic_address (XEXP (orig, 1), | |
845 | Pmode, (base == reg ? 0 : reg)); | |
846 | if (GET_CODE (orig) == CONST_INT) | |
847 | { | |
ed8908e7 | 848 | pic_ref = plus_constant (base, INTVAL (orig)); |
ee890fe2 SS |
849 | is_complex = 1; |
850 | } | |
851 | else | |
6f94a68e | 852 | pic_ref = gen_rtx_PLUS (Pmode, base, orig); |
ee890fe2 SS |
853 | |
854 | if (RTX_UNCHANGING_P (base) && RTX_UNCHANGING_P (orig)) | |
855 | RTX_UNCHANGING_P (pic_ref) = 1; | |
856 | ||
857 | if (reg && is_complex) | |
858 | { | |
859 | emit_move_insn (reg, pic_ref); | |
860 | pic_ref = reg; | |
861 | } | |
862 | /* Likewise, should we set special REG_NOTEs here? */ | |
863 | } | |
864 | ||
865 | else if (GET_CODE (orig) == CONST) | |
866 | { | |
867 | return machopic_legitimize_pic_address (XEXP (orig, 0), Pmode, reg); | |
868 | } | |
869 | ||
870 | else if (GET_CODE (orig) == MEM | |
871 | && GET_CODE (XEXP (orig, 0)) == SYMBOL_REF) | |
872 | { | |
873 | rtx addr = machopic_legitimize_pic_address (XEXP (orig, 0), Pmode, reg); | |
874 | ||
6f94a68e | 875 | addr = gen_rtx_MEM (GET_MODE (orig), addr); |
ee890fe2 SS |
876 | RTX_UNCHANGING_P (addr) = RTX_UNCHANGING_P (orig); |
877 | emit_move_insn (reg, addr); | |
878 | pic_ref = reg; | |
879 | } | |
880 | ||
881 | return pic_ref; | |
882 | } | |
883 | ||
884 | ||
885 | void | |
9c808aad | 886 | machopic_finish (FILE *asm_out_file) |
ee890fe2 SS |
887 | { |
888 | tree temp; | |
889 | ||
890 | for (temp = machopic_stubs; | |
891 | temp != NULL_TREE; | |
892 | temp = TREE_CHAIN (temp)) | |
893 | { | |
91dc3130 KG |
894 | const char *sym_name = IDENTIFIER_POINTER (TREE_VALUE (temp)); |
895 | const char *stub_name = IDENTIFIER_POINTER (TREE_PURPOSE (temp)); | |
ee890fe2 SS |
896 | char *sym; |
897 | char *stub; | |
ee890fe2 SS |
898 | |
899 | if (! TREE_USED (temp)) | |
900 | continue; | |
901 | ||
b7fb9feb TC |
902 | /* If the symbol is actually defined, we don't need a stub. */ |
903 | if (sym_name[0] == '!' && sym_name[1] == 'T') | |
904 | continue; | |
905 | ||
772c5265 | 906 | sym_name = darwin_strip_name_encoding (sym_name); |
ee890fe2 SS |
907 | |
908 | sym = alloca (strlen (sym_name) + 2); | |
909 | if (sym_name[0] == '*' || sym_name[0] == '&') | |
910 | strcpy (sym, sym_name + 1); | |
911 | else if (sym_name[0] == '-' || sym_name[0] == '+') | |
9c808aad | 912 | strcpy (sym, sym_name); |
ee890fe2 SS |
913 | else |
914 | sym[0] = '_', strcpy (sym + 1, sym_name); | |
915 | ||
916 | stub = alloca (strlen (stub_name) + 2); | |
917 | if (stub_name[0] == '*' || stub_name[0] == '&') | |
918 | strcpy (stub, stub_name + 1); | |
919 | else | |
920 | stub[0] = '_', strcpy (stub + 1, stub_name); | |
921 | ||
922 | machopic_output_stub (asm_out_file, sym, stub); | |
923 | } | |
924 | ||
925 | for (temp = machopic_non_lazy_pointers; | |
9c808aad | 926 | temp != NULL_TREE; |
ee890fe2 SS |
927 | temp = TREE_CHAIN (temp)) |
928 | { | |
7ae8cf75 KG |
929 | const char *const sym_name = IDENTIFIER_POINTER (TREE_VALUE (temp)); |
930 | const char *const lazy_name = IDENTIFIER_POINTER (TREE_PURPOSE (temp)); | |
ee890fe2 SS |
931 | |
932 | if (! TREE_USED (temp)) | |
933 | continue; | |
934 | ||
3f64e543 | 935 | if (machopic_ident_defined_p (TREE_VALUE (temp))) |
ee890fe2 SS |
936 | { |
937 | data_section (); | |
c8af3574 | 938 | assemble_align (GET_MODE_ALIGNMENT (Pmode)); |
ee890fe2 | 939 | assemble_label (lazy_name); |
6f94a68e | 940 | assemble_integer (gen_rtx_SYMBOL_REF (Pmode, sym_name), |
c8af3574 RH |
941 | GET_MODE_SIZE (Pmode), |
942 | GET_MODE_ALIGNMENT (Pmode), 1); | |
ee890fe2 SS |
943 | } |
944 | else | |
945 | { | |
946 | machopic_nl_symbol_ptr_section (); | |
9c808aad | 947 | assemble_name (asm_out_file, lazy_name); |
ee890fe2 SS |
948 | fprintf (asm_out_file, ":\n"); |
949 | ||
950 | fprintf (asm_out_file, "\t.indirect_symbol "); | |
9c808aad | 951 | assemble_name (asm_out_file, sym_name); |
ee890fe2 SS |
952 | fprintf (asm_out_file, "\n"); |
953 | ||
c8af3574 RH |
954 | assemble_integer (const0_rtx, GET_MODE_SIZE (Pmode), |
955 | GET_MODE_ALIGNMENT (Pmode), 1); | |
ee890fe2 SS |
956 | } |
957 | } | |
958 | } | |
959 | ||
9c808aad AJ |
960 | int |
961 | machopic_operand_p (rtx op) | |
ee890fe2 SS |
962 | { |
963 | if (MACHOPIC_JUST_INDIRECT) | |
964 | { | |
965 | while (GET_CODE (op) == CONST) | |
966 | op = XEXP (op, 0); | |
967 | ||
968 | if (GET_CODE (op) == SYMBOL_REF) | |
969 | return machopic_name_defined_p (XSTR (op, 0)); | |
970 | else | |
971 | return 0; | |
972 | } | |
973 | ||
974 | while (GET_CODE (op) == CONST) | |
975 | op = XEXP (op, 0); | |
976 | ||
977 | if (GET_CODE (op) == MINUS | |
978 | && GET_CODE (XEXP (op, 0)) == SYMBOL_REF | |
979 | && GET_CODE (XEXP (op, 1)) == SYMBOL_REF | |
980 | && machopic_name_defined_p (XSTR (XEXP (op, 0), 0)) | |
981 | && machopic_name_defined_p (XSTR (XEXP (op, 1), 0))) | |
982 | return 1; | |
983 | ||
ee890fe2 SS |
984 | return 0; |
985 | } | |
df56a27f SS |
986 | |
987 | /* This function records whether a given name corresponds to a defined | |
988 | or undefined function or variable, for machopic_classify_ident to | |
989 | use later. */ | |
990 | ||
991 | void | |
9c808aad | 992 | darwin_encode_section_info (tree decl, rtx rtl, int first ATTRIBUTE_UNUSED) |
df56a27f SS |
993 | { |
994 | char code = '\0'; | |
995 | int defined = 0; | |
353e51f8 | 996 | rtx sym_ref; |
c0cbc013 DJ |
997 | const char *orig_str; |
998 | char *new_str; | |
353e51f8 | 999 | size_t len, new_len; |
df56a27f | 1000 | |
e1a4211d SS |
1001 | /* Do the standard encoding things first. */ |
1002 | default_encode_section_info (decl, rtl, first); | |
1003 | ||
1004 | /* With the introduction of symbol_ref flags, some of the following | |
1005 | code has become redundant and should be removed at some point. */ | |
1006 | ||
df56a27f SS |
1007 | if ((TREE_CODE (decl) == FUNCTION_DECL |
1008 | || TREE_CODE (decl) == VAR_DECL) | |
70bdc2ff | 1009 | && !DECL_EXTERNAL (decl) |
df56a27f SS |
1010 | && ((TREE_STATIC (decl) |
1011 | && (!DECL_COMMON (decl) || !TREE_PUBLIC (decl))) | |
abe72dd8 SS |
1012 | || (DECL_INITIAL (decl) |
1013 | && DECL_INITIAL (decl) != error_mark_node))) | |
df56a27f SS |
1014 | defined = 1; |
1015 | ||
1016 | if (TREE_CODE (decl) == FUNCTION_DECL) | |
1017 | code = (defined ? 'T' : 't'); | |
1018 | else if (TREE_CODE (decl) == VAR_DECL) | |
1019 | code = (defined ? 'D' : 'd'); | |
1020 | ||
353e51f8 SS |
1021 | if (code == '\0') |
1022 | return; | |
df56a27f | 1023 | |
c6a2438a | 1024 | sym_ref = XEXP (rtl, 0); |
353e51f8 SS |
1025 | orig_str = XSTR (sym_ref, 0); |
1026 | len = strlen (orig_str) + 1; | |
df56a27f | 1027 | |
353e51f8 SS |
1028 | if (orig_str[0] == '!') |
1029 | { | |
1030 | /* Already encoded; see if we need to change it. */ | |
1031 | if (code == orig_str[1]) | |
1032 | return; | |
1033 | /* Yes, tweak a copy of the name and put it in a new string. */ | |
1034 | new_str = alloca (len); | |
1035 | memcpy (new_str, orig_str, len); | |
1036 | new_str[1] = code; | |
1037 | XSTR (sym_ref, 0) = ggc_alloc_string (new_str, len); | |
353e51f8 SS |
1038 | } |
1039 | else | |
1040 | { | |
1041 | /* Add the encoding. */ | |
1042 | new_len = len + 4; | |
1043 | new_str = alloca (new_len); | |
1044 | new_str[0] = '!'; | |
1045 | new_str[1] = code; | |
1046 | new_str[2] = '_'; | |
1047 | new_str[3] = '_'; | |
1048 | memcpy (new_str + 4, orig_str, len); | |
1049 | XSTR (sym_ref, 0) = ggc_alloc_string (new_str, new_len); | |
df56a27f | 1050 | } |
4e08ba6c SS |
1051 | /* The non-lazy pointer list may have captured references to the |
1052 | old encoded name, change them. */ | |
b7fb9feb TC |
1053 | if (TREE_CODE (decl) == VAR_DECL) |
1054 | update_non_lazy_ptrs (XSTR (sym_ref, 0)); | |
1055 | else | |
1056 | update_stubs (XSTR (sym_ref, 0)); | |
df56a27f SS |
1057 | } |
1058 | ||
772c5265 RH |
1059 | /* Undo the effects of the above. */ |
1060 | ||
1061 | const char * | |
9c808aad | 1062 | darwin_strip_name_encoding (const char *str) |
772c5265 RH |
1063 | { |
1064 | return str[0] == '!' ? str + 4 : str; | |
1065 | } | |
1066 | ||
df56a27f SS |
1067 | /* Scan the list of non-lazy pointers and update any recorded names whose |
1068 | stripped name matches the argument. */ | |
1069 | ||
1070 | static void | |
9c808aad | 1071 | update_non_lazy_ptrs (const char *name) |
df56a27f | 1072 | { |
91dc3130 | 1073 | const char *name1, *name2; |
df56a27f SS |
1074 | tree temp; |
1075 | ||
772c5265 | 1076 | name1 = darwin_strip_name_encoding (name); |
df56a27f SS |
1077 | |
1078 | for (temp = machopic_non_lazy_pointers; | |
9c808aad | 1079 | temp != NULL_TREE; |
df56a27f SS |
1080 | temp = TREE_CHAIN (temp)) |
1081 | { | |
7ae8cf75 | 1082 | const char *sym_name = IDENTIFIER_POINTER (TREE_VALUE (temp)); |
df56a27f SS |
1083 | |
1084 | if (*sym_name == '!') | |
1085 | { | |
772c5265 | 1086 | name2 = darwin_strip_name_encoding (sym_name); |
df56a27f SS |
1087 | if (strcmp (name1, name2) == 0) |
1088 | { | |
d24652ee | 1089 | /* FIXME: This breaks the identifier hash table. */ |
9c808aad | 1090 | IDENTIFIER_NODE_CHECK (TREE_VALUE (temp))->identifier.id.str |
d24652ee | 1091 | = (unsigned char *) name; |
df56a27f SS |
1092 | break; |
1093 | } | |
1094 | } | |
1095 | } | |
1096 | } | |
4e08ba6c | 1097 | |
b7fb9feb TC |
1098 | /* Function NAME is being defined, and its label has just been output. |
1099 | If there's already a reference to a stub for this function, we can | |
991b6592 | 1100 | just emit the stub label now and we don't bother emitting the stub later. */ |
b7fb9feb TC |
1101 | |
1102 | void | |
9c808aad | 1103 | machopic_output_possible_stub_label (FILE *file, const char *name) |
b7fb9feb TC |
1104 | { |
1105 | tree temp; | |
1106 | ||
b7fb9feb TC |
1107 | /* Ensure we're looking at a section-encoded name. */ |
1108 | if (name[0] != '!' || (name[1] != 't' && name[1] != 'T')) | |
1109 | return; | |
1110 | ||
1111 | for (temp = machopic_stubs; | |
1112 | temp != NULL_TREE; | |
1113 | temp = TREE_CHAIN (temp)) | |
1114 | { | |
1115 | const char *sym_name; | |
1116 | ||
1117 | sym_name = IDENTIFIER_POINTER (TREE_VALUE (temp)); | |
1118 | if (sym_name[0] == '!' && sym_name[1] == 'T' | |
1119 | && ! strcmp (name+2, sym_name+2)) | |
1120 | { | |
1121 | ASM_OUTPUT_LABEL (file, IDENTIFIER_POINTER (TREE_PURPOSE (temp))); | |
61d951df TC |
1122 | /* Avoid generating a stub for this. */ |
1123 | TREE_USED (temp) = 0; | |
b7fb9feb TC |
1124 | break; |
1125 | } | |
1126 | } | |
1127 | } | |
4e08ba6c SS |
1128 | |
1129 | /* Scan the list of stubs and update any recorded names whose | |
1130 | stripped name matches the argument. */ | |
1131 | ||
1132 | static void | |
9c808aad | 1133 | update_stubs (const char *name) |
4e08ba6c | 1134 | { |
91dc3130 | 1135 | const char *name1, *name2; |
4e08ba6c SS |
1136 | tree temp; |
1137 | ||
772c5265 | 1138 | name1 = darwin_strip_name_encoding (name); |
4e08ba6c SS |
1139 | |
1140 | for (temp = machopic_stubs; | |
9c808aad | 1141 | temp != NULL_TREE; |
4e08ba6c SS |
1142 | temp = TREE_CHAIN (temp)) |
1143 | { | |
7ae8cf75 | 1144 | const char *sym_name = IDENTIFIER_POINTER (TREE_VALUE (temp)); |
4e08ba6c SS |
1145 | |
1146 | if (*sym_name == '!') | |
1147 | { | |
772c5265 | 1148 | name2 = darwin_strip_name_encoding (sym_name); |
4e08ba6c SS |
1149 | if (strcmp (name1, name2) == 0) |
1150 | { | |
d24652ee | 1151 | /* FIXME: This breaks the identifier hash table. */ |
9c808aad | 1152 | IDENTIFIER_NODE_CHECK (TREE_VALUE (temp))->identifier.id.str |
d24652ee | 1153 | = (unsigned char *) name; |
4e08ba6c SS |
1154 | break; |
1155 | } | |
1156 | } | |
1157 | } | |
1158 | } | |
2cc07db4 | 1159 | |
ae46c4e0 | 1160 | void |
9c808aad AJ |
1161 | machopic_select_section (tree exp, int reloc, |
1162 | unsigned HOST_WIDE_INT align ATTRIBUTE_UNUSED) | |
ae46c4e0 | 1163 | { |
3d7964d5 | 1164 | void (*base_function)(void); |
9c808aad | 1165 | |
3d7964d5 GK |
1166 | if (decl_readonly_section_1 (exp, reloc, MACHOPIC_INDIRECT)) |
1167 | base_function = readonly_data_section; | |
1168 | else if (TREE_READONLY (exp) || TREE_CONSTANT (exp)) | |
1169 | base_function = const_data_section; | |
1170 | else | |
1171 | base_function = data_section; | |
9c808aad | 1172 | |
3d7964d5 | 1173 | if (TREE_CODE (exp) == STRING_CST |
9c808aad | 1174 | && ((size_t) TREE_STRING_LENGTH (exp) |
3d7964d5 GK |
1175 | == strlen (TREE_STRING_POINTER (exp)) + 1) |
1176 | && ! flag_writable_strings) | |
1177 | cstring_section (); | |
1178 | else if ((TREE_CODE (exp) == INTEGER_CST || TREE_CODE (exp) == REAL_CST) | |
1179 | && flag_merge_constants) | |
ae46c4e0 RH |
1180 | { |
1181 | tree size = TYPE_SIZE (TREE_TYPE (exp)); | |
1182 | ||
1183 | if (TREE_CODE (size) == INTEGER_CST && | |
1184 | TREE_INT_CST_LOW (size) == 4 && | |
1185 | TREE_INT_CST_HIGH (size) == 0) | |
1186 | literal4_section (); | |
1187 | else if (TREE_CODE (size) == INTEGER_CST && | |
1188 | TREE_INT_CST_LOW (size) == 8 && | |
1189 | TREE_INT_CST_HIGH (size) == 0) | |
1190 | literal8_section (); | |
1191 | else | |
3d7964d5 | 1192 | base_function (); |
ae46c4e0 RH |
1193 | } |
1194 | else if (TREE_CODE (exp) == CONSTRUCTOR | |
1195 | && TREE_TYPE (exp) | |
1196 | && TREE_CODE (TREE_TYPE (exp)) == RECORD_TYPE | |
1197 | && TYPE_NAME (TREE_TYPE (exp))) | |
1198 | { | |
1199 | tree name = TYPE_NAME (TREE_TYPE (exp)); | |
1200 | if (TREE_CODE (name) == TYPE_DECL) | |
1201 | name = DECL_NAME (name); | |
1202 | if (!strcmp (IDENTIFIER_POINTER (name), "NSConstantString")) | |
1203 | objc_constant_string_object_section (); | |
1204 | else if (!strcmp (IDENTIFIER_POINTER (name), "NXConstantString")) | |
1205 | objc_string_object_section (); | |
ae46c4e0 | 1206 | else |
3d7964d5 | 1207 | base_function (); |
ae46c4e0 RH |
1208 | } |
1209 | else if (TREE_CODE (exp) == VAR_DECL && | |
1210 | DECL_NAME (exp) && | |
1211 | TREE_CODE (DECL_NAME (exp)) == IDENTIFIER_NODE && | |
1212 | IDENTIFIER_POINTER (DECL_NAME (exp)) && | |
1213 | !strncmp (IDENTIFIER_POINTER (DECL_NAME (exp)), "_OBJC_", 6)) | |
1214 | { | |
1215 | const char *name = IDENTIFIER_POINTER (DECL_NAME (exp)); | |
1216 | ||
1217 | if (!strncmp (name, "_OBJC_CLASS_METHODS_", 20)) | |
1218 | objc_cls_meth_section (); | |
1219 | else if (!strncmp (name, "_OBJC_INSTANCE_METHODS_", 23)) | |
1220 | objc_inst_meth_section (); | |
1221 | else if (!strncmp (name, "_OBJC_CATEGORY_CLASS_METHODS_", 20)) | |
1222 | objc_cat_cls_meth_section (); | |
1223 | else if (!strncmp (name, "_OBJC_CATEGORY_INSTANCE_METHODS_", 23)) | |
1224 | objc_cat_inst_meth_section (); | |
1225 | else if (!strncmp (name, "_OBJC_CLASS_VARIABLES_", 22)) | |
1226 | objc_class_vars_section (); | |
1227 | else if (!strncmp (name, "_OBJC_INSTANCE_VARIABLES_", 25)) | |
1228 | objc_instance_vars_section (); | |
1229 | else if (!strncmp (name, "_OBJC_CLASS_PROTOCOLS_", 22)) | |
1230 | objc_cat_cls_meth_section (); | |
1231 | else if (!strncmp (name, "_OBJC_CLASS_NAME_", 17)) | |
1232 | objc_class_names_section (); | |
1233 | else if (!strncmp (name, "_OBJC_METH_VAR_NAME_", 20)) | |
1234 | objc_meth_var_names_section (); | |
1235 | else if (!strncmp (name, "_OBJC_METH_VAR_TYPE_", 20)) | |
1236 | objc_meth_var_types_section (); | |
1237 | else if (!strncmp (name, "_OBJC_CLASS_REFERENCES", 22)) | |
1238 | objc_cls_refs_section (); | |
1239 | else if (!strncmp (name, "_OBJC_CLASS_", 12)) | |
1240 | objc_class_section (); | |
1241 | else if (!strncmp (name, "_OBJC_METACLASS_", 16)) | |
1242 | objc_meta_class_section (); | |
1243 | else if (!strncmp (name, "_OBJC_CATEGORY_", 15)) | |
1244 | objc_category_section (); | |
1245 | else if (!strncmp (name, "_OBJC_SELECTOR_REFERENCES", 25)) | |
1246 | objc_selector_refs_section (); | |
1247 | else if (!strncmp (name, "_OBJC_SELECTOR_FIXUP", 20)) | |
1248 | objc_selector_fixup_section (); | |
1249 | else if (!strncmp (name, "_OBJC_SYMBOLS", 13)) | |
1250 | objc_symbols_section (); | |
1251 | else if (!strncmp (name, "_OBJC_MODULES", 13)) | |
1252 | objc_module_info_section (); | |
264fa2db ZL |
1253 | else if (!strncmp (name, "_OBJC_IMAGE_INFO", 16)) |
1254 | objc_image_info_section (); | |
ae46c4e0 RH |
1255 | else if (!strncmp (name, "_OBJC_PROTOCOL_INSTANCE_METHODS_", 32)) |
1256 | objc_cat_inst_meth_section (); | |
1257 | else if (!strncmp (name, "_OBJC_PROTOCOL_CLASS_METHODS_", 29)) | |
1258 | objc_cat_cls_meth_section (); | |
1259 | else if (!strncmp (name, "_OBJC_PROTOCOL_REFS_", 20)) | |
1260 | objc_cat_cls_meth_section (); | |
1261 | else if (!strncmp (name, "_OBJC_PROTOCOL_", 15)) | |
1262 | objc_protocol_section (); | |
ae46c4e0 | 1263 | else |
3d7964d5 | 1264 | base_function (); |
ae46c4e0 RH |
1265 | } |
1266 | else | |
3d7964d5 | 1267 | base_function (); |
ae46c4e0 RH |
1268 | } |
1269 | ||
b64a1b53 | 1270 | /* This can be called with address expressions as "rtx". |
991b6592 | 1271 | They must go in "const". */ |
b64a1b53 RH |
1272 | |
1273 | void | |
9c808aad AJ |
1274 | machopic_select_rtx_section (enum machine_mode mode, rtx x, |
1275 | unsigned HOST_WIDE_INT align ATTRIBUTE_UNUSED) | |
b64a1b53 RH |
1276 | { |
1277 | if (GET_MODE_SIZE (mode) == 8) | |
1278 | literal8_section (); | |
1279 | else if (GET_MODE_SIZE (mode) == 4 | |
1280 | && (GET_CODE (x) == CONST_INT | |
1281 | || GET_CODE (x) == CONST_DOUBLE)) | |
1282 | literal4_section (); | |
86b0a4f3 | 1283 | else if (MACHOPIC_INDIRECT |
2e53734e GK |
1284 | && (GET_CODE (x) == SYMBOL_REF |
1285 | || GET_CODE (x) == CONST | |
1286 | || GET_CODE (x) == LABEL_REF)) | |
1287 | const_data_section (); | |
b64a1b53 RH |
1288 | else |
1289 | const_section (); | |
1290 | } | |
1291 | ||
2cc07db4 | 1292 | void |
9c808aad | 1293 | machopic_asm_out_constructor (rtx symbol, int priority ATTRIBUTE_UNUSED) |
2cc07db4 | 1294 | { |
ab82a49f | 1295 | if (MACHOPIC_INDIRECT) |
2cc07db4 RH |
1296 | mod_init_section (); |
1297 | else | |
1298 | constructor_section (); | |
c8af3574 RH |
1299 | assemble_align (POINTER_SIZE); |
1300 | assemble_integer (symbol, POINTER_SIZE / BITS_PER_UNIT, POINTER_SIZE, 1); | |
2cc07db4 | 1301 | |
ab82a49f | 1302 | if (! MACHOPIC_INDIRECT) |
2cc07db4 RH |
1303 | fprintf (asm_out_file, ".reference .constructors_used\n"); |
1304 | } | |
1305 | ||
1306 | void | |
9c808aad | 1307 | machopic_asm_out_destructor (rtx symbol, int priority ATTRIBUTE_UNUSED) |
2cc07db4 | 1308 | { |
ab82a49f | 1309 | if (MACHOPIC_INDIRECT) |
2cc07db4 RH |
1310 | mod_term_section (); |
1311 | else | |
1312 | destructor_section (); | |
c8af3574 RH |
1313 | assemble_align (POINTER_SIZE); |
1314 | assemble_integer (symbol, POINTER_SIZE / BITS_PER_UNIT, POINTER_SIZE, 1); | |
2cc07db4 | 1315 | |
ab82a49f | 1316 | if (! MACHOPIC_INDIRECT) |
2cc07db4 RH |
1317 | fprintf (asm_out_file, ".reference .destructors_used\n"); |
1318 | } | |
e2500fed | 1319 | |
5eb99654 | 1320 | void |
9c808aad | 1321 | darwin_globalize_label (FILE *stream, const char *name) |
5eb99654 KG |
1322 | { |
1323 | if (!!strncmp (name, "_OBJC_", 6)) | |
1324 | default_globalize_label (stream, name); | |
1325 | } | |
1326 | ||
7606e68f SS |
1327 | /* Output a difference of two labels that will be an assembly time |
1328 | constant if the two labels are local. (.long lab1-lab2 will be | |
1329 | very different if lab1 is at the boundary between two sections; it | |
1330 | will be relocated according to the second section, not the first, | |
1331 | so one ends up with a difference between labels in different | |
1332 | sections, which is bad in the dwarf2 eh context for instance.) */ | |
1333 | ||
1334 | static int darwin_dwarf_label_counter; | |
1335 | ||
1336 | void | |
9c808aad AJ |
1337 | darwin_asm_output_dwarf_delta (FILE *file, int size ATTRIBUTE_UNUSED, |
1338 | const char *lab1, const char *lab2) | |
7606e68f SS |
1339 | { |
1340 | const char *p = lab1 + (lab1[0] == '*'); | |
1341 | int islocaldiff = (p[0] == 'L'); | |
1342 | ||
1343 | if (islocaldiff) | |
1344 | fprintf (file, "\t.set L$set$%d,", darwin_dwarf_label_counter); | |
1345 | else | |
1346 | fprintf (file, "\t%s\t", ".long"); | |
1347 | assemble_name (file, lab1); | |
1348 | fprintf (file, "-"); | |
1349 | assemble_name (file, lab2); | |
1350 | if (islocaldiff) | |
1351 | fprintf (file, "\n\t.long L$set$%d", darwin_dwarf_label_counter++); | |
1352 | } | |
1353 | ||
a5fe455b | 1354 | void |
9c808aad | 1355 | darwin_file_end (void) |
a5fe455b ZW |
1356 | { |
1357 | machopic_finish (asm_out_file); | |
1358 | if (strcmp (lang_hooks.name, "GNU C++") == 0) | |
1359 | { | |
1360 | constructor_section (); | |
1361 | destructor_section (); | |
1362 | ASM_OUTPUT_ALIGN (asm_out_file, 1); | |
1363 | } | |
1364 | } | |
1365 | ||
e2500fed | 1366 | #include "gt-darwin.h" |