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ee890fe2 | 1 | /* Target definitions for PowerPC running Darwin (Mac OS X). |
602ea4d3 | 2 | Copyright (C) 1997, 2000, 2001, 2003, 2004, 2005, 2006 |
fe9565ed | 3 | Free Software Foundation, Inc. |
ee890fe2 SS |
4 | Contributed by Apple Computer Inc. |
5 | ||
5de601cf | 6 | This file is part of GCC. |
ee890fe2 | 7 | |
5de601cf NC |
8 | GCC is free software; you can redistribute it and/or modify it |
9 | under the terms of the GNU General Public License as published | |
10 | by the Free Software Foundation; either version 2, or (at your | |
11 | option) any later version. | |
ee890fe2 | 12 | |
5de601cf NC |
13 | GCC is distributed in the hope that it will be useful, but WITHOUT |
14 | ANY WARRANTY; without even the implied warranty of MERCHANTABILITY | |
15 | or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public | |
16 | License for more details. | |
ee890fe2 | 17 | |
5de601cf NC |
18 | You should have received a copy of the GNU General Public License |
19 | along with GCC; see the file COPYING. If not, write to the | |
39d14dda KC |
20 | Free Software Foundation, 51 Franklin Street, Fifth Floor, Boston, |
21 | MA 02110-1301, USA. */ | |
ee890fe2 | 22 | |
b91da81f DB |
23 | #undef TARGET_VERSION |
24 | #define TARGET_VERSION fprintf (stderr, " (Darwin/PowerPC)"); | |
25 | ||
ee890fe2 SS |
26 | /* The "Darwin ABI" is mostly like AIX, but with some key differences. */ |
27 | ||
28 | #define DEFAULT_ABI ABI_DARWIN | |
29 | ||
31abac07 EC |
30 | #ifdef IN_LIBGCC2 |
31 | #undef TARGET_64BIT | |
32 | #ifdef __powerpc64__ | |
33 | #define TARGET_64BIT 1 | |
34 | #else | |
35 | #define TARGET_64BIT 0 | |
36 | #endif | |
37 | #endif | |
38 | ||
ee890fe2 SS |
39 | /* The object file format is Mach-O. */ |
40 | ||
41 | #define TARGET_OBJECT_FORMAT OBJECT_MACHO | |
42 | ||
64ee9490 EC |
43 | /* Size of the Obj-C jump buffer. */ |
44 | #define OBJC_JBLEN ((TARGET_64BIT) ? (26*2 + 18*2 + 129 + 1) : (26 + 18*2 + 129 + 1)) | |
45 | ||
ee890fe2 SS |
46 | /* We're not ever going to do TOCs. */ |
47 | ||
48 | #define TARGET_TOC 0 | |
49 | #define TARGET_NO_TOC 1 | |
50 | ||
49bd1d27 SS |
51 | /* Override the default rs6000 definition. */ |
52 | #undef PTRDIFF_TYPE | |
53 | #define PTRDIFF_TYPE (TARGET_64BIT ? "long int" : "int") | |
54 | ||
bd96cd55 DE |
55 | /* Translate config/rs6000/darwin.opt to config/darwin.h. */ |
56 | #define TARGET_DYNAMIC_NO_PIC (TARGET_MACHO_DYNAMIC_NO_PIC) | |
57 | ||
7990b46f MK |
58 | #define TARGET_OS_CPP_BUILTINS() \ |
59 | do \ | |
60 | { \ | |
49bd1d27 SS |
61 | if (!TARGET_64BIT) builtin_define ("__ppc__"); \ |
62 | if (TARGET_64BIT) builtin_define ("__ppc64__"); \ | |
7990b46f MK |
63 | builtin_define ("__POWERPC__"); \ |
64 | builtin_define ("__NATURAL_ALIGNMENT__"); \ | |
ed5b9f96 | 65 | darwin_cpp_builtins (pfile); \ |
7990b46f MK |
66 | } \ |
67 | while (0) | |
ee890fe2 | 68 | |
ab82a49f | 69 | |
c1e55850 | 70 | #define SUBTARGET_OVERRIDE_OPTIONS \ |
ab82a49f | 71 | do { \ |
c7b5e395 GK |
72 | /* The Darwin ABI always includes AltiVec, can't be (validly) turned \ |
73 | off. */ \ | |
ab82a49f | 74 | rs6000_altivec_abi = 1; \ |
78f5898b | 75 | TARGET_ALTIVEC_VRSAVE = 1; \ |
ab82a49f AP |
76 | if (DEFAULT_ABI == ABI_DARWIN) \ |
77 | { \ | |
78 | if (MACHO_DYNAMIC_NO_PIC_P) \ | |
79 | { \ | |
80 | if (flag_pic) \ | |
d4ee4d25 | 81 | warning (0, "-mdynamic-no-pic overrides -fpic or -fPIC"); \ |
ab82a49f AP |
82 | flag_pic = 0; \ |
83 | } \ | |
84 | else if (flag_pic == 1) \ | |
85 | { \ | |
ab82a49f AP |
86 | flag_pic = 2; \ |
87 | } \ | |
88 | } \ | |
49bd1d27 SS |
89 | if (TARGET_64BIT && ! TARGET_POWERPC64) \ |
90 | { \ | |
91 | target_flags |= MASK_POWERPC64; \ | |
d4ee4d25 | 92 | warning (0, "-m64 requires PowerPC64 architecture, enabling"); \ |
49bd1d27 | 93 | } \ |
f475fd3c MS |
94 | if (flag_mkernel) \ |
95 | { \ | |
96 | rs6000_default_long_calls = 1; \ | |
97 | target_flags |= MASK_SOFT_FLOAT; \ | |
98 | } \ | |
c1e55850 GK |
99 | } while(0) |
100 | ||
c7b5e395 GK |
101 | #define C_COMMON_OVERRIDE_OPTIONS do { \ |
102 | /* On powerpc, __cxa_get_exception_ptr is available starting in the \ | |
747b9f55 | 103 | 10.4.6 libstdc++.dylib. */ \ |
c7b5e395 | 104 | if ((! darwin_macosx_version_min \ |
747b9f55 | 105 | || strverscmp (darwin_macosx_version_min, "10.4.6") < 0) \ |
c7b5e395 GK |
106 | && flag_use_cxa_get_exception_ptr == 2) \ |
107 | flag_use_cxa_get_exception_ptr = 0; \ | |
f475fd3c MS |
108 | if (flag_mkernel) \ |
109 | flag_no_builtin = 1; \ | |
110 | SUBTARGET_C_COMMON_OVERRIDE_OPTIONS; \ | |
c7b5e395 GK |
111 | } while (0) |
112 | ||
c1e55850 GK |
113 | /* Darwin has 128-bit long double support in libc in 10.4 and later. |
114 | Default to 128-bit long doubles even on earlier platforms for ABI | |
115 | consistency; arithmetic will work even if libc and libm support is | |
116 | not available. */ | |
117 | ||
118 | #define RS6000_DEFAULT_LONG_DOUBLE_SIZE 128 | |
119 | ||
ab82a49f | 120 | |
ee890fe2 SS |
121 | /* We want -fPIC by default, unless we're using -static to compile for |
122 | the kernel or some such. */ | |
123 | ||
3ab68120 | 124 | #define CC1_SPEC "\ |
f475fd3c MS |
125 | %{g: %{!fno-eliminate-unused-debug-symbols: -feliminate-unused-debug-symbols }} \ |
126 | %{static: %{Zdynamic: %e conflicting code gen style switches are used}}\ | |
127 | %{!mkernel:%{!static:%{!mdynamic-no-pic:-fPIC}}}" | |
ee890fe2 | 128 | |
965a7e90 GK |
129 | #define DARWIN_SUBARCH_SPEC " \ |
130 | %{m64: ppc64} \ | |
131 | %{!m64: \ | |
132 | %{mcpu=601:ppc601; \ | |
133 | mcpu=603:ppc603; \ | |
134 | mcpu=603e:ppc603; \ | |
135 | mcpu=604:ppc604; \ | |
136 | mcpu=604e:ppc604e; \ | |
137 | mcpu=740:ppc750; \ | |
138 | mcpu=750:ppc750; \ | |
139 | mcpu=G3:ppc750; \ | |
140 | mcpu=7400:ppc7400; \ | |
141 | mcpu=G4:ppc7400; \ | |
142 | mcpu=7450:ppc7450; \ | |
143 | mcpu=970:ppc970; \ | |
144 | mcpu=power4:ppc970; \ | |
145 | mcpu=G5:ppc970; \ | |
146 | :ppc}}" | |
147 | ||
56309261 GK |
148 | /* crt2.o is at least partially required for 10.3.x and earlier. */ |
149 | #define DARWIN_CRT2_SPEC \ | |
150 | "%{!m64:%:version-compare(!> 10.4 mmacosx-version-min= crt2.o%s)}" | |
151 | ||
3a7e8b87 GK |
152 | #undef SUBTARGET_EXTRA_SPECS |
153 | #define SUBTARGET_EXTRA_SPECS \ | |
965a7e90 | 154 | { "darwin_arch", "%{m64:ppc64;:ppc}" }, \ |
56309261 | 155 | { "darwin_crt2", DARWIN_CRT2_SPEC }, \ |
965a7e90 | 156 | { "darwin_subarch", DARWIN_SUBARCH_SPEC }, |
3a7e8b87 | 157 | |
c4e18b1c GK |
158 | /* Output a .machine directive. */ |
159 | #undef TARGET_ASM_FILE_START | |
160 | #define TARGET_ASM_FILE_START rs6000_darwin_file_start | |
161 | ||
699c914a MS |
162 | /* The "-faltivec" option should have been called "-maltivec" all |
163 | along. -ffix-and-continue and -findirect-data is for compatibility | |
164 | for old compilers. */ | |
165 | ||
8bb418a3 | 166 | #define SUBTARGET_OPTION_TRANSLATE_TABLE \ |
699c914a MS |
167 | { "-ffix-and-continue", "-mfix-and-continue" }, \ |
168 | { "-findirect-data", "-mfix-and-continue" }, \ | |
169 | { "-faltivec", "-maltivec -include altivec.h" }, \ | |
170 | { "-fno-altivec", "-mno-altivec" }, \ | |
171 | { "-Waltivec-long-deprecated", "-mwarn-altivec-long" }, \ | |
8bb418a3 ZL |
172 | { "-Wno-altivec-long-deprecated", "-mno-warn-altivec-long" } |
173 | ||
0abe4170 | 174 | /* Make both r2 and r13 available for allocation. */ |
5dead3e5 | 175 | #define FIXED_R2 0 |
ee890fe2 SS |
176 | #define FIXED_R13 0 |
177 | ||
ee890fe2 SS |
178 | /* Base register for access to local variables of the function. */ |
179 | ||
114a6b1d AP |
180 | #undef HARD_FRAME_POINTER_REGNUM |
181 | #define HARD_FRAME_POINTER_REGNUM 30 | |
ee890fe2 | 182 | |
1db02437 FS |
183 | #undef RS6000_PIC_OFFSET_TABLE_REGNUM |
184 | #define RS6000_PIC_OFFSET_TABLE_REGNUM 31 | |
ee890fe2 | 185 | |
ee890fe2 SS |
186 | /* Pad the outgoing args area to 16 bytes instead of the usual 8. */ |
187 | ||
188 | #undef STARTING_FRAME_OFFSET | |
189 | #define STARTING_FRAME_OFFSET \ | |
c9c02d98 AP |
190 | (FRAME_GROWS_DOWNWARD \ |
191 | ? 0 \ | |
192 | : (RS6000_ALIGN (current_function_outgoing_args_size, 16) \ | |
c9c02d98 | 193 | + RS6000_SAVE_AREA)) |
ee890fe2 SS |
194 | |
195 | #undef STACK_DYNAMIC_OFFSET | |
196 | #define STACK_DYNAMIC_OFFSET(FUNDECL) \ | |
197 | (RS6000_ALIGN (current_function_outgoing_args_size, 16) \ | |
198 | + (STACK_POINTER_OFFSET)) | |
199 | ||
d58f6584 DJ |
200 | /* These are used by -fbranch-probabilities */ |
201 | #define HOT_TEXT_SECTION_NAME "__TEXT,__text,regular,pure_instructions" | |
202 | #define UNLIKELY_EXECUTED_TEXT_SECTION_NAME \ | |
750054a2 | 203 | "__TEXT,__unlikely,regular,pure_instructions" |
d58f6584 | 204 | |
ee890fe2 SS |
205 | /* Define cutoff for using external functions to save floating point. |
206 | Currently on Darwin, always use inline stores. */ | |
207 | ||
208 | #undef FP_SAVE_INLINE | |
209 | #define FP_SAVE_INLINE(FIRST_REG) ((FIRST_REG) < 64) | |
210 | ||
f57fe068 AM |
211 | /* Darwin uses a function call if everything needs to be saved/restored. */ |
212 | #undef WORLD_SAVE_P | |
213 | #define WORLD_SAVE_P(INFO) ((INFO)->world_save_p) | |
214 | ||
94134f42 ZW |
215 | /* The assembler wants the alternate register names, but without |
216 | leading percent sign. */ | |
ee890fe2 | 217 | #undef REGISTER_NAMES |
94134f42 ZW |
218 | #define REGISTER_NAMES \ |
219 | { \ | |
220 | "r0", "r1", "r2", "r3", "r4", "r5", "r6", "r7", \ | |
221 | "r8", "r9", "r10", "r11", "r12", "r13", "r14", "r15", \ | |
222 | "r16", "r17", "r18", "r19", "r20", "r21", "r22", "r23", \ | |
223 | "r24", "r25", "r26", "r27", "r28", "r29", "r30", "r31", \ | |
224 | "f0", "f1", "f2", "f3", "f4", "f5", "f6", "f7", \ | |
225 | "f8", "f9", "f10", "f11", "f12", "f13", "f14", "f15", \ | |
226 | "f16", "f17", "f18", "f19", "f20", "f21", "f22", "f23", \ | |
227 | "f24", "f25", "f26", "f27", "f28", "f29", "f30", "f31", \ | |
228 | "mq", "lr", "ctr", "ap", \ | |
229 | "cr0", "cr1", "cr2", "cr3", "cr4", "cr5", "cr6", "cr7", \ | |
230 | "xer", \ | |
231 | "v0", "v1", "v2", "v3", "v4", "v5", "v6", "v7", \ | |
232 | "v8", "v9", "v10", "v11", "v12", "v13", "v14", "v15", \ | |
233 | "v16", "v17", "v18", "v19", "v20", "v21", "v22", "v23", \ | |
234 | "v24", "v25", "v26", "v27", "v28", "v29", "v30", "v31", \ | |
235 | "vrsave", "vscr", \ | |
c9c02d98 AP |
236 | "spe_acc", "spefscr", \ |
237 | "sfp" \ | |
94134f42 | 238 | } |
ee890fe2 | 239 | |
54ee9799 DE |
240 | /* This outputs NAME to FILE. */ |
241 | ||
242 | #undef RS6000_OUTPUT_BASENAME | |
243 | #define RS6000_OUTPUT_BASENAME(FILE, NAME) \ | |
9dce39a4 | 244 | assemble_name (FILE, NAME) |
54ee9799 | 245 | |
5eb99654 KG |
246 | /* Globalizing directive for a label. */ |
247 | #undef GLOBAL_ASM_OP | |
248 | #define GLOBAL_ASM_OP "\t.globl " | |
249 | #undef TARGET_ASM_GLOBALIZE_LABEL | |
ee890fe2 SS |
250 | |
251 | /* This is how to output an internal label prefix. rs6000.c uses this | |
252 | when generating traceback tables. */ | |
253 | /* Not really used for Darwin? */ | |
254 | ||
255 | #undef ASM_OUTPUT_INTERNAL_LABEL_PREFIX | |
256 | #define ASM_OUTPUT_INTERNAL_LABEL_PREFIX(FILE,PREFIX) \ | |
257 | fprintf (FILE, "%s", PREFIX) | |
258 | ||
ee890fe2 SS |
259 | /* This says how to output an assembler line to define a global common |
260 | symbol. */ | |
261 | /* ? */ | |
262 | #undef ASM_OUTPUT_ALIGNED_COMMON | |
c92d8761 AP |
263 | #define ASM_OUTPUT_COMMON(FILE, NAME, SIZE, ROUNDED) \ |
264 | do { \ | |
5547b982 | 265 | unsigned HOST_WIDE_INT _new_size = SIZE; \ |
c92d8761 AP |
266 | fputs (".comm ", (FILE)); \ |
267 | RS6000_OUTPUT_BASENAME ((FILE), (NAME)); \ | |
5547b982 AP |
268 | if (_new_size == 0) _new_size = 1; \ |
269 | fprintf ((FILE), ","HOST_WIDE_INT_PRINT_UNSIGNED"\n", _new_size); \ | |
c92d8761 | 270 | } while (0) |
ee890fe2 | 271 | |
deb5bfcc SS |
272 | /* Override the standard rs6000 definition. */ |
273 | ||
274 | #undef ASM_COMMENT_START | |
275 | #define ASM_COMMENT_START ";" | |
276 | ||
ee890fe2 SS |
277 | /* FP save and restore routines. */ |
278 | #define SAVE_FP_PREFIX "._savef" | |
279 | #define SAVE_FP_SUFFIX "" | |
280 | #define RESTORE_FP_PREFIX "._restf" | |
281 | #define RESTORE_FP_SUFFIX "" | |
282 | ||
e381c27a DJ |
283 | /* This is how to output an assembler line that says to advance |
284 | the location counter to a multiple of 2**LOG bytes using the | |
285 | "nop" instruction as padding. */ | |
286 | ||
cdc58a82 DJ |
287 | #define ASM_OUTPUT_ALIGN_WITH_NOP(FILE,LOG) \ |
288 | do \ | |
289 | { \ | |
290 | if ((LOG) < 3) \ | |
291 | { \ | |
292 | ASM_OUTPUT_ALIGN (FILE,LOG); \ | |
293 | } \ | |
294 | else /* nop == ori r0,r0,0 */ \ | |
295 | fprintf (FILE, "\t.align32 %d,0x60000000\n", (LOG)); \ | |
296 | } while (0) | |
e381c27a | 297 | |
eb1093d3 DP |
298 | #ifdef HAVE_GAS_MAX_SKIP_P2ALIGN |
299 | /* This is supported in cctools 465 and later. The macro test | |
300 | above prevents using it in earlier build environments. */ | |
e0f931d2 MS |
301 | #define ASM_OUTPUT_MAX_SKIP_ALIGN(FILE,LOG,MAX_SKIP) \ |
302 | if ((LOG) != 0) \ | |
303 | { \ | |
304 | if ((MAX_SKIP) == 0) \ | |
305 | fprintf ((FILE), "\t.p2align %d\n", (LOG)); \ | |
306 | else \ | |
307 | fprintf ((FILE), "\t.p2align %d,,%d\n", (LOG), (MAX_SKIP)); \ | |
308 | } | |
eb1093d3 DP |
309 | #endif |
310 | ||
d1ea7616 MS |
311 | /* Generate insns to call the profiler. */ |
312 | ||
ee890fe2 SS |
313 | #define PROFILE_HOOK(LABEL) output_profile_hook (LABEL) |
314 | ||
315 | /* Function name to call to do profiling. */ | |
316 | ||
317 | #define RS6000_MCOUNT "*mcount" | |
318 | ||
49bd1d27 | 319 | /* Default processor: G4, and G5 for 64-bit. */ |
ed947a96 DJ |
320 | |
321 | #undef PROCESSOR_DEFAULT | |
322 | #define PROCESSOR_DEFAULT PROCESSOR_PPC7400 | |
49bd1d27 SS |
323 | #undef PROCESSOR_DEFAULT64 |
324 | #define PROCESSOR_DEFAULT64 PROCESSOR_POWER4 | |
ed947a96 DJ |
325 | |
326 | /* Default target flag settings. Despite the fact that STMW/LMW | |
c1207243 | 327 | serializes, it's still a big code size win to use them. Use FSEL by |
ed947a96 DJ |
328 | default as well. */ |
329 | ||
330 | #undef TARGET_DEFAULT | |
331 | #define TARGET_DEFAULT (MASK_POWERPC | MASK_MULTIPLE | MASK_NEW_MNEMONICS \ | |
332 | | MASK_PPC_GFXOPT) | |
333 | ||
bd004fef DE |
334 | /* Darwin only runs on PowerPC, so short-circuit POWER patterns. */ |
335 | #undef TARGET_POWER | |
336 | #define TARGET_POWER 0 | |
602ea4d3 JJ |
337 | #undef TARGET_IEEEQUAD |
338 | #define TARGET_IEEEQUAD 0 | |
bd004fef | 339 | |
ee890fe2 SS |
340 | /* Since Darwin doesn't do TOCs, stub this out. */ |
341 | ||
69b61bb1 | 342 | #define ASM_OUTPUT_SPECIAL_POOL_ENTRY_P(X, MODE) ((void)X, (void)MODE, 0) |
ee890fe2 | 343 | |
4f400cf6 DJ |
344 | /* Unlike most other PowerPC targets, chars are signed, for |
345 | consistency with other Darwin architectures. */ | |
346 | ||
347 | #undef DEFAULT_SIGNED_CHAR | |
348 | #define DEFAULT_SIGNED_CHAR (1) | |
349 | ||
31abac07 EC |
350 | /* Given an rtx X being reloaded into a reg required to be |
351 | in class CLASS, return the class of reg to actually use. | |
ee890fe2 SS |
352 | In general this is just CLASS; but on some machines |
353 | in some cases it is preferable to use a more restrictive class. | |
31abac07 | 354 | |
ee890fe2 SS |
355 | On the RS/6000, we have to return NO_REGS when we want to reload a |
356 | floating-point CONST_DOUBLE to force it to be copied to memory. | |
357 | ||
358 | Don't allow R0 when loading the address of, or otherwise furtling with, | |
359 | a SYMBOL_REF. */ | |
360 | ||
361 | #undef PREFERRED_RELOAD_CLASS | |
c55a59cc | 362 | #define PREFERRED_RELOAD_CLASS(X,CLASS) \ |
343f6bbf DE |
363 | ((CONSTANT_P (X) \ |
364 | && reg_classes_intersect_p ((CLASS), FLOAT_REGS)) \ | |
c55a59cc GK |
365 | ? NO_REGS \ |
366 | : ((GET_CODE (X) == SYMBOL_REF || GET_CODE (X) == HIGH) \ | |
367 | && reg_class_subset_p (BASE_REGS, (CLASS))) \ | |
368 | ? BASE_REGS \ | |
369 | : (GET_MODE_CLASS (GET_MODE (X)) == MODE_INT \ | |
370 | && (CLASS) == NON_SPECIAL_REGS) \ | |
371 | ? GENERAL_REGS \ | |
372 | : (CLASS)) | |
ee890fe2 SS |
373 | |
374 | /* Fix for emit_group_load (): force large constants to be pushed via regs. */ | |
375 | #define ALWAYS_PUSH_CONSTS_USING_REGS_P 1 | |
2bfcf297 | 376 | |
58182de3 GK |
377 | /* Compute field alignment. This is similar to the version of the |
378 | macro in the Apple version of GCC, except that version supports | |
379 | 'mac68k' alignment, and that version uses the computed alignment | |
380 | always for the first field of a structure. The first-field | |
381 | behaviour is dealt with by | |
382 | darwin_rs6000_special_round_type_align. */ | |
383 | #define ADJUST_FIELD_ALIGN(FIELD, COMPUTED) \ | |
384 | (TARGET_ALIGN_NATURAL ? (COMPUTED) \ | |
385 | : (COMPUTED) == 128 ? 128 \ | |
386 | : MIN ((COMPUTED), 32)) | |
3b85fe5f | 387 | |
2bfcf297 DB |
388 | /* Darwin increases natural record alignment to doubleword if the first |
389 | field is an FP double while the FP fields remain word aligned. */ | |
58182de3 GK |
390 | #define ROUND_TYPE_ALIGN(STRUCT, COMPUTED, SPECIFIED) \ |
391 | ((TREE_CODE (STRUCT) == RECORD_TYPE \ | |
392 | || TREE_CODE (STRUCT) == UNION_TYPE \ | |
393 | || TREE_CODE (STRUCT) == QUAL_UNION_TYPE) \ | |
394 | && TARGET_ALIGN_NATURAL == 0 \ | |
395 | ? darwin_rs6000_special_round_type_align (STRUCT, COMPUTED, SPECIFIED) \ | |
396 | : (TREE_CODE (STRUCT) == VECTOR_TYPE \ | |
397 | && ALTIVEC_VECTOR_MODE (TYPE_MODE (STRUCT))) \ | |
398 | ? MAX (MAX ((COMPUTED), (SPECIFIED)), 128) \ | |
2bfcf297 | 399 | : MAX ((COMPUTED), (SPECIFIED))) |
9429c84c | 400 | |
c8529ffa GK |
401 | /* Specify padding for the last element of a block move between |
402 | registers and memory. FIRST is nonzero if this is the only | |
403 | element. */ | |
404 | #define BLOCK_REG_PADDING(MODE, TYPE, FIRST) \ | |
405 | (!(FIRST) ? upward : FUNCTION_ARG_PADDING (MODE, TYPE)) | |
406 | ||
f984d8df | 407 | /* XXX: Darwin supports neither .quad, or .llong, but it also doesn't |
88cad84b | 408 | support 64 bit PowerPC either, so this just keeps things happy. */ |
362b68a8 | 409 | #define DOUBLE_INT_ASM_OP "\t.quad\t" |
c859cda6 | 410 | |
609688f3 | 411 | /* For binary compatibility with 2.95; Darwin C APIs use bool from |
8f4220dc MA |
412 | stdbool.h, which was an int-sized enum in 2.95. Users can explicitly |
413 | choose to have sizeof(bool)==1 with the -mone-byte-bool switch. */ | |
8f4220dc | 414 | #define BOOL_TYPE_SIZE (darwin_one_byte_bool ? CHAR_TYPE_SIZE : INT_TYPE_SIZE) |
9fe08fd0 RH |
415 | |
416 | #undef REGISTER_TARGET_PRAGMAS | |
2fab365e PB |
417 | #define REGISTER_TARGET_PRAGMAS() \ |
418 | do \ | |
419 | { \ | |
420 | DARWIN_REGISTER_TARGET_PRAGMAS(); \ | |
421 | targetm.resolve_overloaded_builtin = altivec_resolve_overloaded_builtin; \ | |
422 | } \ | |
423 | while (0) | |
95727fb8 | 424 | |
f8a57be8 GK |
425 | #ifdef IN_LIBGCC2 |
426 | #include <stdbool.h> | |
427 | #endif | |
428 | ||
8662eb14 | 429 | #define MD_UNWIND_SUPPORT "config/rs6000/darwin-unwind.h" |
f8a57be8 GK |
430 | |
431 | #define HAS_MD_FALLBACK_FRAME_STATE_FOR 1 | |
699c914a | 432 | |
699c914a | 433 | /* True, iff we're generating fast turn around debugging code. When |
de2ab0ca | 434 | true, we arrange for function prologues to start with 5 nops so |
b5969637 MS |
435 | that gdb may insert code to redirect them, and for data to be |
436 | accessed indirectly. The runtime uses this indirection to forward | |
699c914a MS |
437 | references for data to the original instance of that data. */ |
438 | ||
439 | #define TARGET_FIX_AND_CONTINUE (darwin_fix_and_continue) | |
6e955430 ZL |
440 | |
441 | /* This is the reserved direct dispatch address for Objective-C. */ | |
442 | #define OFFS_MSGSEND_FAST 0xFFFEFF00 | |
443 | ||
444 | /* This is the reserved ivar address Objective-C. */ | |
445 | #define OFFS_ASSIGNIVAR_FAST 0xFFFEFEC0 | |
ed5b9f96 GK |
446 | |
447 | /* Old versions of Mac OS/Darwin don't have C99 functions available. */ | |
448 | #undef TARGET_C99_FUNCTIONS | |
449 | #define TARGET_C99_FUNCTIONS \ | |
450 | (TARGET_64BIT \ | |
451 | || (darwin_macosx_version_min \ | |
452 | && strverscmp (darwin_macosx_version_min, "10.3") >= 0)) | |
f475fd3c MS |
453 | |
454 | /* When generating kernel code or kexts, we don't use Altivec by | |
455 | default, as kernel code doesn't save/restore those registers. */ | |
456 | #define OS_MISSING_ALTIVEC (flag_mkernel || flag_apple_kext) |