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ee890fe2 | 1 | /* Target definitions for PowerPC running Darwin (Mac OS X). |
5624e564 | 2 | Copyright (C) 1997-2015 Free Software Foundation, Inc. |
ee890fe2 SS |
3 | Contributed by Apple Computer Inc. |
4 | ||
5de601cf | 5 | This file is part of GCC. |
ee890fe2 | 6 | |
5de601cf NC |
7 | GCC is free software; you can redistribute it and/or modify it |
8 | under the terms of the GNU General Public License as published | |
2f83c7d6 | 9 | by the Free Software Foundation; either version 3, or (at your |
5de601cf | 10 | option) any later version. |
ee890fe2 | 11 | |
5de601cf NC |
12 | GCC is distributed in the hope that it will be useful, but WITHOUT |
13 | ANY WARRANTY; without even the implied warranty of MERCHANTABILITY | |
14 | or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public | |
15 | License for more details. | |
ee890fe2 | 16 | |
5de601cf | 17 | You should have received a copy of the GNU General Public License |
2f83c7d6 NC |
18 | along with GCC; see the file COPYING3. If not see |
19 | <http://www.gnu.org/licenses/>. */ | |
ee890fe2 | 20 | |
fee3eacd IS |
21 | #undef DARWIN_PPC |
22 | #define DARWIN_PPC 1 | |
23 | ||
ee890fe2 SS |
24 | /* The "Darwin ABI" is mostly like AIX, but with some key differences. */ |
25 | ||
26 | #define DEFAULT_ABI ABI_DARWIN | |
27 | ||
31abac07 EC |
28 | #ifdef IN_LIBGCC2 |
29 | #undef TARGET_64BIT | |
30 | #ifdef __powerpc64__ | |
31 | #define TARGET_64BIT 1 | |
32 | #else | |
33 | #define TARGET_64BIT 0 | |
34 | #endif | |
35 | #endif | |
36 | ||
ee890fe2 SS |
37 | /* The object file format is Mach-O. */ |
38 | ||
39 | #define TARGET_OBJECT_FORMAT OBJECT_MACHO | |
40 | ||
64ee9490 EC |
41 | /* Size of the Obj-C jump buffer. */ |
42 | #define OBJC_JBLEN ((TARGET_64BIT) ? (26*2 + 18*2 + 129 + 1) : (26 + 18*2 + 129 + 1)) | |
43 | ||
ee890fe2 SS |
44 | /* We're not ever going to do TOCs. */ |
45 | ||
46 | #define TARGET_TOC 0 | |
47 | #define TARGET_NO_TOC 1 | |
48 | ||
49bd1d27 SS |
49 | /* Override the default rs6000 definition. */ |
50 | #undef PTRDIFF_TYPE | |
51 | #define PTRDIFF_TYPE (TARGET_64BIT ? "long int" : "int") | |
52 | ||
e4cad568 GK |
53 | #define TARGET_OS_CPP_BUILTINS() \ |
54 | do \ | |
55 | { \ | |
56 | if (!TARGET_64BIT) builtin_define ("__ppc__"); \ | |
57 | if (TARGET_64BIT) builtin_define ("__ppc64__"); \ | |
58 | builtin_define ("__POWERPC__"); \ | |
59 | builtin_define ("__NATURAL_ALIGNMENT__"); \ | |
60 | darwin_cpp_builtins (pfile); \ | |
61 | } \ | |
7990b46f | 62 | while (0) |
ee890fe2 | 63 | |
9005471b IS |
64 | /* Generate branch islands stubs if this is true. */ |
65 | extern int darwin_emit_branch_islands; | |
66 | ||
e4cad568 | 67 | #define SUBTARGET_OVERRIDE_OPTIONS darwin_rs6000_override_options () |
c1e55850 | 68 | |
c7b5e395 GK |
69 | #define C_COMMON_OVERRIDE_OPTIONS do { \ |
70 | /* On powerpc, __cxa_get_exception_ptr is available starting in the \ | |
747b9f55 | 71 | 10.4.6 libstdc++.dylib. */ \ |
e4cad568 | 72 | if (strverscmp (darwin_macosx_version_min, "10.4.6") < 0 \ |
c7b5e395 GK |
73 | && flag_use_cxa_get_exception_ptr == 2) \ |
74 | flag_use_cxa_get_exception_ptr = 0; \ | |
f475fd3c MS |
75 | if (flag_mkernel) \ |
76 | flag_no_builtin = 1; \ | |
77 | SUBTARGET_C_COMMON_OVERRIDE_OPTIONS; \ | |
c7b5e395 GK |
78 | } while (0) |
79 | ||
c1e55850 GK |
80 | /* Darwin has 128-bit long double support in libc in 10.4 and later. |
81 | Default to 128-bit long doubles even on earlier platforms for ABI | |
82 | consistency; arithmetic will work even if libc and libm support is | |
83 | not available. */ | |
84 | ||
85 | #define RS6000_DEFAULT_LONG_DOUBLE_SIZE 128 | |
86 | ||
ab82a49f | 87 | |
ee890fe2 | 88 | /* We want -fPIC by default, unless we're using -static to compile for |
2be55a25 JM |
89 | the kernel or some such. The "-faltivec" option should have been |
90 | called "-maltivec" all along. */ | |
ee890fe2 | 91 | |
3ab68120 | 92 | #define CC1_SPEC "\ |
0eab6840 | 93 | %(cc1_cpu) \ |
f475fd3c MS |
94 | %{g: %{!fno-eliminate-unused-debug-symbols: -feliminate-unused-debug-symbols }} \ |
95 | %{static: %{Zdynamic: %e conflicting code gen style switches are used}}\ | |
32ec6542 | 96 | %{!mmacosx-version-min=*:-mmacosx-version-min=%(darwin_minversion)} \ |
2be55a25 JM |
97 | %{!mkernel:%{!static:%{!mdynamic-no-pic:-fPIC}}} \ |
98 | %{faltivec:-maltivec -include altivec.h} %{fno-altivec:-mno-altivec} \ | |
99 | %<faltivec %<fno-altivec " \ | |
100 | DARWIN_CC1_SPEC | |
ee890fe2 | 101 | |
b8ec3cc8 EC |
102 | #define DARWIN_ARCH_SPEC "%{m64:ppc64;:ppc}" |
103 | ||
965a7e90 GK |
104 | #define DARWIN_SUBARCH_SPEC " \ |
105 | %{m64: ppc64} \ | |
106 | %{!m64: \ | |
107 | %{mcpu=601:ppc601; \ | |
108 | mcpu=603:ppc603; \ | |
109 | mcpu=603e:ppc603; \ | |
110 | mcpu=604:ppc604; \ | |
111 | mcpu=604e:ppc604e; \ | |
112 | mcpu=740:ppc750; \ | |
113 | mcpu=750:ppc750; \ | |
114 | mcpu=G3:ppc750; \ | |
115 | mcpu=7400:ppc7400; \ | |
116 | mcpu=G4:ppc7400; \ | |
117 | mcpu=7450:ppc7450; \ | |
118 | mcpu=970:ppc970; \ | |
119 | mcpu=power4:ppc970; \ | |
120 | mcpu=G5:ppc970; \ | |
121 | :ppc}}" | |
122 | ||
56309261 GK |
123 | /* crt2.o is at least partially required for 10.3.x and earlier. */ |
124 | #define DARWIN_CRT2_SPEC \ | |
125 | "%{!m64:%:version-compare(!> 10.4 mmacosx-version-min= crt2.o%s)}" | |
126 | ||
e4cad568 | 127 | /* Determine a minimum version based on compiler options. */ |
48137d59 GK |
128 | #define DARWIN_MINVERSION_SPEC \ |
129 | "%{m64:%{fgnu-runtime:10.4; \ | |
130 | ,objective-c|,objc-cpp-output:10.5; \ | |
6b692a83 | 131 | ,objective-c-header:10.5; \ |
48137d59 | 132 | ,objective-c++|,objective-c++-cpp-output:10.5; \ |
6b692a83 | 133 | ,objective-c++-header|,objc++-cpp-output:10.5; \ |
48137d59 GK |
134 | :10.4}; \ |
135 | shared-libgcc:10.3; \ | |
e4cad568 GK |
136 | :10.1}" |
137 | ||
3a7e8b87 GK |
138 | #undef SUBTARGET_EXTRA_SPECS |
139 | #define SUBTARGET_EXTRA_SPECS \ | |
742163c0 | 140 | DARWIN_EXTRA_SPECS \ |
b8ec3cc8 | 141 | { "darwin_arch", DARWIN_ARCH_SPEC }, \ |
56309261 | 142 | { "darwin_crt2", DARWIN_CRT2_SPEC }, \ |
965a7e90 | 143 | { "darwin_subarch", DARWIN_SUBARCH_SPEC }, |
3a7e8b87 | 144 | |
c4e18b1c GK |
145 | /* Output a .machine directive. */ |
146 | #undef TARGET_ASM_FILE_START | |
147 | #define TARGET_ASM_FILE_START rs6000_darwin_file_start | |
148 | ||
0abe4170 | 149 | /* Make both r2 and r13 available for allocation. */ |
5dead3e5 | 150 | #define FIXED_R2 0 |
ee890fe2 SS |
151 | #define FIXED_R13 0 |
152 | ||
ee890fe2 SS |
153 | /* Base register for access to local variables of the function. */ |
154 | ||
114a6b1d AP |
155 | #undef HARD_FRAME_POINTER_REGNUM |
156 | #define HARD_FRAME_POINTER_REGNUM 30 | |
ee890fe2 | 157 | |
1db02437 FS |
158 | #undef RS6000_PIC_OFFSET_TABLE_REGNUM |
159 | #define RS6000_PIC_OFFSET_TABLE_REGNUM 31 | |
ee890fe2 | 160 | |
ee890fe2 SS |
161 | /* Pad the outgoing args area to 16 bytes instead of the usual 8. */ |
162 | ||
163 | #undef STARTING_FRAME_OFFSET | |
164 | #define STARTING_FRAME_OFFSET \ | |
c9c02d98 AP |
165 | (FRAME_GROWS_DOWNWARD \ |
166 | ? 0 \ | |
38173d38 | 167 | : (RS6000_ALIGN (crtl->outgoing_args_size, 16) \ |
c9c02d98 | 168 | + RS6000_SAVE_AREA)) |
ee890fe2 SS |
169 | |
170 | #undef STACK_DYNAMIC_OFFSET | |
171 | #define STACK_DYNAMIC_OFFSET(FUNDECL) \ | |
38173d38 | 172 | (RS6000_ALIGN (crtl->outgoing_args_size, 16) \ |
ee890fe2 SS |
173 | + (STACK_POINTER_OFFSET)) |
174 | ||
f57fe068 | 175 | /* Darwin uses a function call if everything needs to be saved/restored. */ |
e0f19b55 | 176 | |
f57fe068 AM |
177 | #undef WORLD_SAVE_P |
178 | #define WORLD_SAVE_P(INFO) ((INFO)->world_save_p) | |
179 | ||
e0f19b55 IS |
180 | /* We don't use these on Darwin, they are just place-holders. */ |
181 | #define SAVE_FP_PREFIX "" | |
182 | #define SAVE_FP_SUFFIX "" | |
183 | #define RESTORE_FP_PREFIX "" | |
184 | #define RESTORE_FP_SUFFIX "" | |
185 | ||
94134f42 ZW |
186 | /* The assembler wants the alternate register names, but without |
187 | leading percent sign. */ | |
ee890fe2 | 188 | #undef REGISTER_NAMES |
94134f42 ZW |
189 | #define REGISTER_NAMES \ |
190 | { \ | |
191 | "r0", "r1", "r2", "r3", "r4", "r5", "r6", "r7", \ | |
192 | "r8", "r9", "r10", "r11", "r12", "r13", "r14", "r15", \ | |
193 | "r16", "r17", "r18", "r19", "r20", "r21", "r22", "r23", \ | |
194 | "r24", "r25", "r26", "r27", "r28", "r29", "r30", "r31", \ | |
195 | "f0", "f1", "f2", "f3", "f4", "f5", "f6", "f7", \ | |
196 | "f8", "f9", "f10", "f11", "f12", "f13", "f14", "f15", \ | |
197 | "f16", "f17", "f18", "f19", "f20", "f21", "f22", "f23", \ | |
198 | "f24", "f25", "f26", "f27", "f28", "f29", "f30", "f31", \ | |
199 | "mq", "lr", "ctr", "ap", \ | |
200 | "cr0", "cr1", "cr2", "cr3", "cr4", "cr5", "cr6", "cr7", \ | |
201 | "xer", \ | |
202 | "v0", "v1", "v2", "v3", "v4", "v5", "v6", "v7", \ | |
203 | "v8", "v9", "v10", "v11", "v12", "v13", "v14", "v15", \ | |
204 | "v16", "v17", "v18", "v19", "v20", "v21", "v22", "v23", \ | |
205 | "v24", "v25", "v26", "v27", "v28", "v29", "v30", "v31", \ | |
206 | "vrsave", "vscr", \ | |
c9c02d98 | 207 | "spe_acc", "spefscr", \ |
ea717bd7 | 208 | "sfp", \ |
70edbbae RAR |
209 | "tfhar", "tfiar", "texasr", \ |
210 | "rh0", "rh1", "rh2", "rh3", "rh4", "rh5", "rh6", "rh7", \ | |
211 | "rh8", "rh9", "rh10", "rh11", "rh12", "rh13", "rh14", "rh15", \ | |
212 | "rh16", "rh17", "rh18", "rh19", "rh20", "rh21", "rh22", "rh23", \ | |
213 | "rh24", "rh25", "rh26", "rh27", "rh28", "rh29", "rh30", "rh31" \ | |
94134f42 | 214 | } |
ee890fe2 | 215 | |
54ee9799 DE |
216 | /* This outputs NAME to FILE. */ |
217 | ||
218 | #undef RS6000_OUTPUT_BASENAME | |
219 | #define RS6000_OUTPUT_BASENAME(FILE, NAME) \ | |
9dce39a4 | 220 | assemble_name (FILE, NAME) |
54ee9799 | 221 | |
5eb99654 KG |
222 | /* Globalizing directive for a label. */ |
223 | #undef GLOBAL_ASM_OP | |
224 | #define GLOBAL_ASM_OP "\t.globl " | |
225 | #undef TARGET_ASM_GLOBALIZE_LABEL | |
ee890fe2 SS |
226 | |
227 | /* This is how to output an internal label prefix. rs6000.c uses this | |
228 | when generating traceback tables. */ | |
229 | /* Not really used for Darwin? */ | |
230 | ||
231 | #undef ASM_OUTPUT_INTERNAL_LABEL_PREFIX | |
232 | #define ASM_OUTPUT_INTERNAL_LABEL_PREFIX(FILE,PREFIX) \ | |
233 | fprintf (FILE, "%s", PREFIX) | |
234 | ||
deb5bfcc SS |
235 | /* Override the standard rs6000 definition. */ |
236 | ||
237 | #undef ASM_COMMENT_START | |
238 | #define ASM_COMMENT_START ";" | |
239 | ||
e381c27a DJ |
240 | /* This is how to output an assembler line that says to advance |
241 | the location counter to a multiple of 2**LOG bytes using the | |
242 | "nop" instruction as padding. */ | |
243 | ||
cdc58a82 DJ |
244 | #define ASM_OUTPUT_ALIGN_WITH_NOP(FILE,LOG) \ |
245 | do \ | |
246 | { \ | |
247 | if ((LOG) < 3) \ | |
248 | { \ | |
249 | ASM_OUTPUT_ALIGN (FILE,LOG); \ | |
250 | } \ | |
251 | else /* nop == ori r0,r0,0 */ \ | |
252 | fprintf (FILE, "\t.align32 %d,0x60000000\n", (LOG)); \ | |
253 | } while (0) | |
e381c27a | 254 | |
eb1093d3 DP |
255 | #ifdef HAVE_GAS_MAX_SKIP_P2ALIGN |
256 | /* This is supported in cctools 465 and later. The macro test | |
257 | above prevents using it in earlier build environments. */ | |
e0f931d2 MS |
258 | #define ASM_OUTPUT_MAX_SKIP_ALIGN(FILE,LOG,MAX_SKIP) \ |
259 | if ((LOG) != 0) \ | |
260 | { \ | |
261 | if ((MAX_SKIP) == 0) \ | |
262 | fprintf ((FILE), "\t.p2align %d\n", (LOG)); \ | |
263 | else \ | |
264 | fprintf ((FILE), "\t.p2align %d,,%d\n", (LOG), (MAX_SKIP)); \ | |
265 | } | |
eb1093d3 DP |
266 | #endif |
267 | ||
d1ea7616 MS |
268 | /* Generate insns to call the profiler. */ |
269 | ||
ee890fe2 SS |
270 | #define PROFILE_HOOK(LABEL) output_profile_hook (LABEL) |
271 | ||
272 | /* Function name to call to do profiling. */ | |
273 | ||
274 | #define RS6000_MCOUNT "*mcount" | |
275 | ||
49bd1d27 | 276 | /* Default processor: G4, and G5 for 64-bit. */ |
ed947a96 DJ |
277 | |
278 | #undef PROCESSOR_DEFAULT | |
279 | #define PROCESSOR_DEFAULT PROCESSOR_PPC7400 | |
49bd1d27 SS |
280 | #undef PROCESSOR_DEFAULT64 |
281 | #define PROCESSOR_DEFAULT64 PROCESSOR_POWER4 | |
ed947a96 DJ |
282 | |
283 | /* Default target flag settings. Despite the fact that STMW/LMW | |
c1207243 | 284 | serializes, it's still a big code size win to use them. Use FSEL by |
ed947a96 DJ |
285 | default as well. */ |
286 | ||
287 | #undef TARGET_DEFAULT | |
6b39bc38 | 288 | #define TARGET_DEFAULT (MASK_MULTIPLE | MASK_PPC_GFXOPT) |
ed947a96 | 289 | |
e426fa99 | 290 | /* Darwin always uses IBM long double, never IEEE long double. */ |
602ea4d3 JJ |
291 | #undef TARGET_IEEEQUAD |
292 | #define TARGET_IEEEQUAD 0 | |
bd004fef | 293 | |
ee890fe2 SS |
294 | /* Since Darwin doesn't do TOCs, stub this out. */ |
295 | ||
69b61bb1 | 296 | #define ASM_OUTPUT_SPECIAL_POOL_ENTRY_P(X, MODE) ((void)X, (void)MODE, 0) |
ee890fe2 | 297 | |
4f400cf6 DJ |
298 | /* Unlike most other PowerPC targets, chars are signed, for |
299 | consistency with other Darwin architectures. */ | |
300 | ||
301 | #undef DEFAULT_SIGNED_CHAR | |
302 | #define DEFAULT_SIGNED_CHAR (1) | |
303 | ||
31abac07 EC |
304 | /* Given an rtx X being reloaded into a reg required to be |
305 | in class CLASS, return the class of reg to actually use. | |
ee890fe2 SS |
306 | In general this is just CLASS; but on some machines |
307 | in some cases it is preferable to use a more restrictive class. | |
31abac07 | 308 | |
ee890fe2 SS |
309 | On the RS/6000, we have to return NO_REGS when we want to reload a |
310 | floating-point CONST_DOUBLE to force it to be copied to memory. | |
311 | ||
312 | Don't allow R0 when loading the address of, or otherwise furtling with, | |
313 | a SYMBOL_REF. */ | |
314 | ||
315 | #undef PREFERRED_RELOAD_CLASS | |
c55a59cc | 316 | #define PREFERRED_RELOAD_CLASS(X,CLASS) \ |
343f6bbf DE |
317 | ((CONSTANT_P (X) \ |
318 | && reg_classes_intersect_p ((CLASS), FLOAT_REGS)) \ | |
c55a59cc GK |
319 | ? NO_REGS \ |
320 | : ((GET_CODE (X) == SYMBOL_REF || GET_CODE (X) == HIGH) \ | |
321 | && reg_class_subset_p (BASE_REGS, (CLASS))) \ | |
322 | ? BASE_REGS \ | |
323 | : (GET_MODE_CLASS (GET_MODE (X)) == MODE_INT \ | |
324 | && (CLASS) == NON_SPECIAL_REGS) \ | |
325 | ? GENERAL_REGS \ | |
326 | : (CLASS)) | |
ee890fe2 | 327 | |
c7169779 JBG |
328 | /* Compute field alignment. |
329 | This implements the 'power' alignment rule by pegging the alignment of | |
330 | items (beyond the first aggregate field) to 32 bits. The pegging is | |
331 | suppressed for vector and long double items (both 128 in size). | |
332 | There is a dummy use of the FIELD argument to avoid an unused variable | |
333 | warning (see PR59496). */ | |
334 | #define ADJUST_FIELD_ALIGN(FIELD, COMPUTED) \ | |
335 | ((void) (FIELD), \ | |
336 | (TARGET_ALIGN_NATURAL \ | |
337 | ? (COMPUTED) \ | |
338 | : (COMPUTED) == 128 \ | |
339 | ? 128 \ | |
340 | : MIN ((COMPUTED), 32))) | |
3b85fe5f | 341 | |
2bfcf297 DB |
342 | /* Darwin increases natural record alignment to doubleword if the first |
343 | field is an FP double while the FP fields remain word aligned. */ | |
58182de3 GK |
344 | #define ROUND_TYPE_ALIGN(STRUCT, COMPUTED, SPECIFIED) \ |
345 | ((TREE_CODE (STRUCT) == RECORD_TYPE \ | |
346 | || TREE_CODE (STRUCT) == UNION_TYPE \ | |
347 | || TREE_CODE (STRUCT) == QUAL_UNION_TYPE) \ | |
348 | && TARGET_ALIGN_NATURAL == 0 \ | |
349 | ? darwin_rs6000_special_round_type_align (STRUCT, COMPUTED, SPECIFIED) \ | |
350 | : (TREE_CODE (STRUCT) == VECTOR_TYPE \ | |
351 | && ALTIVEC_VECTOR_MODE (TYPE_MODE (STRUCT))) \ | |
352 | ? MAX (MAX ((COMPUTED), (SPECIFIED)), 128) \ | |
2bfcf297 | 353 | : MAX ((COMPUTED), (SPECIFIED))) |
9429c84c | 354 | |
c8529ffa GK |
355 | /* Specify padding for the last element of a block move between |
356 | registers and memory. FIRST is nonzero if this is the only | |
357 | element. */ | |
358 | #define BLOCK_REG_PADDING(MODE, TYPE, FIRST) \ | |
359 | (!(FIRST) ? upward : FUNCTION_ARG_PADDING (MODE, TYPE)) | |
360 | ||
362b68a8 | 361 | #define DOUBLE_INT_ASM_OP "\t.quad\t" |
c859cda6 | 362 | |
609688f3 | 363 | /* For binary compatibility with 2.95; Darwin C APIs use bool from |
8f4220dc MA |
364 | stdbool.h, which was an int-sized enum in 2.95. Users can explicitly |
365 | choose to have sizeof(bool)==1 with the -mone-byte-bool switch. */ | |
8f4220dc | 366 | #define BOOL_TYPE_SIZE (darwin_one_byte_bool ? CHAR_TYPE_SIZE : INT_TYPE_SIZE) |
9fe08fd0 RH |
367 | |
368 | #undef REGISTER_TARGET_PRAGMAS | |
2fab365e PB |
369 | #define REGISTER_TARGET_PRAGMAS() \ |
370 | do \ | |
371 | { \ | |
372 | DARWIN_REGISTER_TARGET_PRAGMAS(); \ | |
373 | targetm.resolve_overloaded_builtin = altivec_resolve_overloaded_builtin; \ | |
374 | } \ | |
375 | while (0) | |
95727fb8 | 376 | |
f8a57be8 GK |
377 | #ifdef IN_LIBGCC2 |
378 | #include <stdbool.h> | |
379 | #endif | |
380 | ||
699c914a | 381 | /* True, iff we're generating fast turn around debugging code. When |
de2ab0ca | 382 | true, we arrange for function prologues to start with 5 nops so |
b5969637 MS |
383 | that gdb may insert code to redirect them, and for data to be |
384 | accessed indirectly. The runtime uses this indirection to forward | |
699c914a MS |
385 | references for data to the original instance of that data. */ |
386 | ||
387 | #define TARGET_FIX_AND_CONTINUE (darwin_fix_and_continue) | |
6e955430 ZL |
388 | |
389 | /* This is the reserved direct dispatch address for Objective-C. */ | |
390 | #define OFFS_MSGSEND_FAST 0xFFFEFF00 | |
391 | ||
392 | /* This is the reserved ivar address Objective-C. */ | |
393 | #define OFFS_ASSIGNIVAR_FAST 0xFFFEFEC0 | |
ed5b9f96 GK |
394 | |
395 | /* Old versions of Mac OS/Darwin don't have C99 functions available. */ | |
d33d9e47 AI |
396 | #undef TARGET_LIBC_HAS_FUNCTION |
397 | #define TARGET_LIBC_HAS_FUNCTION darwin_libc_has_function | |
f475fd3c MS |
398 | |
399 | /* When generating kernel code or kexts, we don't use Altivec by | |
400 | default, as kernel code doesn't save/restore those registers. */ | |
401 | #define OS_MISSING_ALTIVEC (flag_mkernel || flag_apple_kext) | |
fb220235 | 402 | |
46a99b06 IS |
403 | /* Darwin has support for section anchors on powerpc*. |
404 | It is disabled for any section containing a "zero-sized item" (because these | |
405 | are re-written as size=1 to be compatible with the OSX ld64). | |
406 | The re-writing would interfere with the computation of anchor offsets. | |
407 | Therefore, we place zero-sized items in their own sections and make such | |
408 | sections unavailable to section anchoring. */ | |
409 | ||
410 | #undef TARGET_ASM_OUTPUT_ANCHOR | |
411 | #define TARGET_ASM_OUTPUT_ANCHOR darwin_asm_output_anchor | |
412 | ||
413 | #undef TARGET_USE_ANCHORS_FOR_SYMBOL_P | |
414 | #define TARGET_USE_ANCHORS_FOR_SYMBOL_P darwin_use_anchors_for_symbol_p | |
415 | ||
416 | #undef DARWIN_SECTION_ANCHORS | |
417 | #define DARWIN_SECTION_ANCHORS 1 | |
418 | ||
26705988 IS |
419 | /* PPC Darwin has to rename some of the long double builtins. */ |
420 | #undef SUBTARGET_INIT_BUILTINS | |
421 | #define SUBTARGET_INIT_BUILTINS \ | |
422 | do { \ | |
423 | darwin_patch_builtins (); \ | |
d1d46f9f MS |
424 | rs6000_builtin_decls[(unsigned) (RS6000_BUILTIN_CFSTRING)] \ |
425 | = darwin_init_cfstring_builtins ((unsigned) (RS6000_BUILTIN_CFSTRING)); \ | |
26705988 | 426 | } while(0) |
1cd130b0 IS |
427 | |
428 | /* So far, there is no rs6000_fold_builtin, if one is introduced, then | |
429 | this will need to be modified similar to the x86 case. */ | |
430 | #define TARGET_FOLD_BUILTIN SUBTARGET_FOLD_BUILTIN | |
3d36d470 UW |
431 | |
432 | /* Use standard DWARF numbering for DWARF debugging information. */ | |
433 | #define RS6000_USE_DWARF_NUMBERING | |
434 |