1 /* Target definitions for PowerPC running Darwin (Mac OS X). 2 Copyright (C) 1997-2021 Free Software Foundation, Inc. 3 Contributed by Apple Computer Inc. 4 5 This file is part of GCC. 6 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 9 by the Free Software Foundation; either version 3, or (at your 10 option) any later version. 11 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. 16 17 You should have received a copy of the GNU General Public License 18 along with GCC; see the file COPYING3. If not see 19 <http://www.gnu.org/licenses/>. */ 20 21 #undef DARWIN_PPC 22 #define DARWIN_PPC 1 23 24 /* The "Darwin ABI" is mostly like AIX, but with some key differences. */ 25 26 #define DEFAULT_ABI ABI_DARWIN 27 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 37 /* The object file format is Mach-O. */ 38 39 #define TARGET_OBJECT_FORMAT OBJECT_MACHO 40 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 44 /* We're not ever going to do TOCs. */ 45 46 #define TARGET_HAS_TOC 0 47 48 /* Override the default rs6000 definition. */ 49 #undef PTRDIFF_TYPE 50 #define PTRDIFF_TYPE (TARGET_64BIT ? "long int" : "int") 51 52 #define TARGET_OS_CPP_BUILTINS() \ 53 do \ 54 { \ 55 builtin_define ("__POWERPC__"); \ 56 builtin_define ("__PPC__"); \ 57 if (TARGET_64BIT) \ 58 { \ 59 builtin_define ("__ppc64__"); \ 60 builtin_define ("__PPC64__"); \ 61 builtin_define ("__powerpc64__"); \ 62 builtin_assert ("cpu=powerpc64"); \ 63 builtin_assert ("machine=powerpc64"); \ 64 } \ 65 else \ 66 { \ 67 builtin_define ("__ppc__"); \ 68 builtin_define_std ("PPC"); \ 69 builtin_assert ("cpu=powerpc"); \ 70 builtin_assert ("machine=powerpc"); \ 71 } \ 72 builtin_define ("__NATURAL_ALIGNMENT__"); \ 73 darwin_cpp_builtins (pfile); \ 74 } \ 75 while (0) 76 77 #define SUBTARGET_OVERRIDE_OPTIONS darwin_rs6000_override_options () 78 79 #define C_COMMON_OVERRIDE_OPTIONS do { \ 80 /* On powerpc, __cxa_get_exception_ptr is available starting in the \ 81 10.4.6 libstdc++.dylib. */ \ 82 if (strverscmp (darwin_macosx_version_min, "10.4.6") < 0 \ 83 && flag_use_cxa_get_exception_ptr == 2) \ 84 flag_use_cxa_get_exception_ptr = 0; \ 85 if (flag_mkernel) \ 86 flag_no_builtin = 1; \ 87 SUBTARGET_C_COMMON_OVERRIDE_OPTIONS; \ 88 } while (0) 89 90 /* Darwin has 128-bit long double support in libc in 10.4 and later. 91 Default to 128-bit long doubles even on earlier platforms for ABI 92 consistency; arithmetic will work even if libc and libm support is 93 not available. */ 94 95 #define RS6000_DEFAULT_LONG_DOUBLE_SIZE 128 96 97 /* Machine dependent libraries. 98 Include libmx when targeting Darwin 7.0 and above, but before libSystem, 99 since the functions are actually in libSystem but for 7.x compatibility 100 we want them to be looked for in libmx first. 101 Include libSystemStubs when compiling against 10.3 - 10.5 SDKs (we assume 102 this is the case when targetting these) - but not for 64-bit long double. 103 Don't do either for m64, the library is either a dummy or non-existent. 104 */ 105 106 #undef LIB_SPEC 107 #define LIB_SPEC \ 108 "%{!static: \ 109 %{!m64:%{!mlong-double-64: \ 110 %{pg:%:version-compare(>< 10.3 10.5 mmacosx-version-min= -lSystemStubs_profile)} \ 111 %{!pg:%:version-compare(>< 10.3 10.5 mmacosx-version-min= -lSystemStubs)} \ 112 %:version-compare(>< 10.3 10.4 mmacosx-version-min= -lmx)}} \ 113 -lSystem \ 114 }" 115 116 /* We want -fPIC by default, unless we're using -static to compile for 117 the kernel or some such. The "-faltivec" option should have been 118 called "-maltivec" all along. */ 119 120 #define CC1_SPEC "\ 121 %(cc1_cpu) \ 122 %{g: %{!fno-eliminate-unused-debug-symbols: -feliminate-unused-debug-symbols }} \ 123 %{static: %{Zdynamic: %e conflicting code gen style switches are used}}\ 124 %{!mkernel:%{!static:%{!mdynamic-no-pic:-fPIC}}} \ 125 %{faltivec:-maltivec -include altivec.h} %{fno-altivec:-mno-altivec} \ 126 %<faltivec %<fno-altivec " \ 127 DARWIN_CC1_SPEC 128 129 /* Default to PPC for single arch builds. */ 130 #define DARWIN_ARCH_SPEC "ppc" 131 132 #define DARWIN_SUBARCH_SPEC " \ 133 %{mcpu=601:ppc601; \ 134 mcpu=603:ppc603; \ 135 mcpu=603e:ppc603; \ 136 mcpu=604:ppc604; \ 137 mcpu=604e:ppc604e; \ 138 mcpu=740:ppc750; \ 139 mcpu=750:ppc750; \ 140 mcpu=G3:ppc750; \ 141 mcpu=7400:ppc7400; \ 142 mcpu=G4:ppc7400; \ 143 mcpu=7450:ppc7450; \ 144 mcpu=970:ppc970; \ 145 mcpu=power4:ppc970; \ 146 mcpu=G5:ppc970; \ 147 :ppc}" 148 149 /* We need to jam the crt to 10.5 for 10.6 (Rosetta) use. */ 150 #undef DARWIN_CRT1_SPEC 151 #define DARWIN_CRT1_SPEC \ 152 "%:version-compare(!> 10.5 mmacosx-version-min= -lcrt1.o) \ 153 %:version-compare(>< 10.5 10.7 mmacosx-version-min= -lcrt1.10.5.o) \ 154 %{fgnu-tm: -lcrttms.o}" 155 156 /* crt2.o is at least partially required for 10.3.x and earlier. 157 It deals with registration of the unwind frames, where this is not 158 automatically provided by the system. So we need it for any case that 159 might use exceptions. */ 160 #undef DARWIN_CRT2_SPEC 161 #define DARWIN_CRT2_SPEC \ 162 "%{!m64:%{shared-libgcc|static-libstdc++|fexceptions|fobjc-exceptions|fgnu-runtime: \ 163 %:version-compare(!> 10.4 mmacosx-version-min= crt2.o%s) \ 164 }}" 165 166 /* crt3 deals with providing cxa_atexit on earlier systems (or fixing it up, 167 for broken versions). It's only needed for c++ code, so we can make it 168 conditional on shared-libgcc since that's forced on for c++. */ 169 #undef DARWIN_CRT3_SPEC 170 #define DARWIN_CRT3_SPEC \ 171 "%{!m64:%{shared-libgcc|static-libstdc++: \ 172 %:version-compare(>< 10.4 10.5 mmacosx-version-min= crt3.o%s) \ 173 %:version-compare(!> 10.4 mmacosx-version-min= crt3_2.o%s) \ 174 }}" 175 176 /* As for crt1, we need to force the dylib crt for 10.6. */ 177 #undef DARWIN_DYLIB1_SPEC 178 #define DARWIN_DYLIB1_SPEC \ 179 "%:version-compare(!> 10.5 mmacosx-version-min= -ldylib1.o) \ 180 %:version-compare(>< 10.5 10.7 mmacosx-version-min= -ldylib1.10.5.o)" 181 182 /* Likewise, the bundle crt. */ 183 #undef DARWIN_BUNDLE1_SPEC 184 #define DARWIN_BUNDLE1_SPEC \ 185 "%{!static:%:version-compare(< 10.7 mmacosx-version-min= -lbundle1.o) \ 186 %{fgnu-tm: -lcrttms.o}}" 187 188 /* The PPC regs save/restore functions are leaves and could, conceivably 189 be used by the tm destructor. */ 190 #undef ENDFILE_SPEC 191 #define ENDFILE_SPEC TM_DESTRUCTOR " -lef_ppc" 192 193 #undef SUBTARGET_EXTRA_SPECS 194 #define SUBTARGET_EXTRA_SPECS \ 195 DARWIN_EXTRA_SPECS \ 196 { "darwin_arch", DARWIN_ARCH_SPEC }, \ 197 { "darwin_crt2", DARWIN_CRT2_SPEC }, \ 198 { "darwin_subarch", DARWIN_SUBARCH_SPEC }, 199 200 /* Output a .machine directive. */ 201 #undef TARGET_ASM_FILE_START 202 #define TARGET_ASM_FILE_START rs6000_darwin_file_start 203 204 /* Make both r2 and r13 available for allocation. */ 205 #define FIXED_R2 0 206 #define FIXED_R13 TARGET_64BIT 207 208 /* Base register for access to local variables of the function. */ 209 210 #undef HARD_FRAME_POINTER_REGNUM 211 #define HARD_FRAME_POINTER_REGNUM 30 212 213 #undef RS6000_PIC_OFFSET_TABLE_REGNUM 214 #define RS6000_PIC_OFFSET_TABLE_REGNUM 31 215 216 #undef FIRST_SAVED_GP_REGNO 217 #define FIRST_SAVED_GP_REGNO 13 218 219 /* Darwin's stack must remain 16-byte aligned for both 32 and 64 bit 220 ABIs. */ 221 222 #undef STACK_BOUNDARY 223 #define STACK_BOUNDARY 128 224 225 /* Offset within stack frame to start allocating local variables at. 226 For supported Darwin versions, FRAME_GROWS_DOWNWARD is true, therefore 227 this value is the offset to the END of the first local allocated. 228 229 On the RS/6000, the frame pointer is the same as the stack pointer, 230 except for dynamic allocations. So we start after the fixed area and 231 outgoing parameter area. 232 233 If the function uses dynamic stack space (CALLS_ALLOCA is set), that 234 space needs to be aligned to STACK_BOUNDARY, i.e. the sum of the 235 sizes of the fixed area and the parameter area must be a multiple of 236 STACK_BOUNDARY. */ 237 238 #undef RS6000_STARTING_FRAME_OFFSET 239 #define RS6000_STARTING_FRAME_OFFSET \ 240 (cfun->calls_alloca \ 241 ? RS6000_ALIGN (crtl->outgoing_args_size + RS6000_SAVE_AREA, 16) \ 242 : (RS6000_ALIGN (crtl->outgoing_args_size, 16) + RS6000_SAVE_AREA)) 243 244 /* Offset from the stack pointer register to an item dynamically 245 allocated on the stack, e.g., by `alloca'. 246 247 The default value for this macro is `STACK_POINTER_OFFSET' plus the 248 length of the outgoing arguments. The default is correct for most 249 machines. See `function.c' for details. 250 251 This value must be a multiple of STACK_BOUNDARY (hard coded in 252 `emit-rtl.c'). */ 253 254 #undef STACK_DYNAMIC_OFFSET 255 #define STACK_DYNAMIC_OFFSET(FUNDECL) \ 256 RS6000_ALIGN (crtl->outgoing_args_size.to_constant() \ 257 + STACK_POINTER_OFFSET, 16) 258 259 /* Darwin uses a function call if everything needs to be saved/restored. */ 260 261 #undef WORLD_SAVE_P 262 #define WORLD_SAVE_P(INFO) ((INFO)->world_save_p) 263 264 /* We don't use these on Darwin, they are just place-holders. */ 265 #define SAVE_FP_PREFIX "" 266 #define SAVE_FP_SUFFIX "" 267 #define RESTORE_FP_PREFIX "" 268 #define RESTORE_FP_SUFFIX "" 269 270 /* The assembler wants the alternate register names, but without 271 leading percent sign. */ 272 #undef REGISTER_NAMES 273 #define REGISTER_NAMES \ 274 { \ 275 /* GPRs */ \ 276 "r0", "r1", "r2", "r3", "r4", "r5", "r6", "r7", \ 277 "r8", "r9", "r10", "r11", "r12", "r13", "r14", "r15", \ 278 "r16", "r17", "r18", "r19", "r20", "r21", "r22", "r23", \ 279 "r24", "r25", "r26", "r27", "r28", "r29", "r30", "r31", \ 280 /* FPRs */ \ 281 "f0", "f1", "f2", "f3", "f4", "f5", "f6", "f7", \ 282 "f8", "f9", "f10", "f11", "f12", "f13", "f14", "f15", \ 283 "f16", "f17", "f18", "f19", "f20", "f21", "f22", "f23", \ 284 "f24", "f25", "f26", "f27", "f28", "f29", "f30", "f31", \ 285 /* VRs */ \ 286 "v0", "v1", "v2", "v3", "v4", "v5", "v6", "v7", \ 287 "v8", "v9", "v10", "v11", "v12", "v13", "v14", "v15", \ 288 "v16", "v17", "v18", "v19", "v20", "v21", "v22", "v23", \ 289 "v24", "v25", "v26", "v27", "v28", "v29", "v30", "v31", \ 290 /* lr ctr ca ap */ \ 291 "lr", "ctr", "xer", "ap", \ 292 /* cr0..cr7 */ \ 293 "cr0", "cr1", "cr2", "cr3", "cr4", "cr5", "cr6", "cr7", \ 294 /* vrsave vscr sfp */ \ 295 "vrsave", "vscr", "sfp" \ 296 } 297 298 /* This outputs NAME to FILE. */ 299 300 #undef RS6000_OUTPUT_BASENAME 301 #define RS6000_OUTPUT_BASENAME(FILE, NAME) \ 302 assemble_name (FILE, NAME) 303 304 /* Globalizing directive for a label. */ 305 #undef GLOBAL_ASM_OP 306 #define GLOBAL_ASM_OP "\t.globl " 307 #undef TARGET_ASM_GLOBALIZE_LABEL 308 309 /* This is how to output an internal label prefix. rs6000.c uses this 310 when generating traceback tables. */ 311 /* Not really used for Darwin? */ 312 313 #undef ASM_OUTPUT_INTERNAL_LABEL_PREFIX 314 #define ASM_OUTPUT_INTERNAL_LABEL_PREFIX(FILE,PREFIX) \ 315 fprintf (FILE, "%s", PREFIX) 316 317 /* Override the standard rs6000 definition. */ 318 319 #undef ASM_COMMENT_START 320 #define ASM_COMMENT_START ";" 321 322 /* This is how to output an assembler line that says to advance 323 the location counter to a multiple of 2**LOG bytes using the 324 "nop" instruction as padding. */ 325 326 #define ASM_OUTPUT_ALIGN_WITH_NOP(FILE,LOG) \ 327 do \ 328 { \ 329 if ((LOG) < 3) \ 330 { \ 331 ASM_OUTPUT_ALIGN (FILE,LOG); \ 332 } \ 333 else /* nop == ori r0,r0,0 */ \ 334 fprintf (FILE, "\t.align32 %d,0x60000000\n", (LOG)); \ 335 } while (0) 336 337 #ifdef HAVE_GAS_MAX_SKIP_P2ALIGN 338 /* This is supported in cctools 465 and later. The macro test 339 above prevents using it in earlier build environments. */ 340 #define ASM_OUTPUT_MAX_SKIP_ALIGN(FILE,LOG,MAX_SKIP) \ 341 if ((LOG) > 0) \ 342 { \ 343 if ((MAX_SKIP) <= 0) \ 344 fprintf ((FILE), "\t.p2align %d\n", (LOG)); \ 345 else \ 346 fprintf ((FILE), "\t.p2align %d,,%d\n", (LOG), (MAX_SKIP)); \ 347 } 348 #endif 349 350 /* Generate insns to call the profiler. */ 351 352 #define PROFILE_HOOK(LABEL) output_profile_hook (LABEL) 353 354 /* Function name to call to do profiling. */ 355 356 #define RS6000_MCOUNT "*mcount" 357 358 /* Default processor: G4, and G5 for 64-bit. */ 359 360 #undef PROCESSOR_DEFAULT 361 #define PROCESSOR_DEFAULT PROCESSOR_PPC7400 362 #undef PROCESSOR_DEFAULT64 363 #define PROCESSOR_DEFAULT64 PROCESSOR_POWER4 364 365 /* Default target flag settings. Despite the fact that STMW/LMW 366 serializes, it's still a big code size win to use them. Use FSEL by 367 default as well. */ 368 369 #undef TARGET_DEFAULT 370 #define TARGET_DEFAULT (MASK_MULTIPLE | MASK_PPC_GFXOPT) 371 372 /* Darwin always uses IBM long double, never IEEE long double. */ 373 #undef TARGET_IEEEQUAD 374 #define TARGET_IEEEQUAD 0 375 376 #undef TARGET_IEEEQUAD_DEFAULT 377 #define TARGET_IEEEQUAD_DEFAULT 0 378 379 /* Since Darwin doesn't do TOCs, stub this out. */ 380 381 #define ASM_OUTPUT_SPECIAL_POOL_ENTRY_P(X, MODE) ((void)X, (void)MODE, 0) 382 383 /* Unlike most other PowerPC targets, chars are signed, for 384 consistency with other Darwin architectures. */ 385 386 #undef DEFAULT_SIGNED_CHAR 387 #define DEFAULT_SIGNED_CHAR (1) 388 389 /* Given an rtx X being reloaded into a reg required to be 390 in class CLASS, return the class of reg to actually use. 391 In general this is just CLASS; but on some machines 392 in some cases it is preferable to use a more restrictive class. 393 394 On the RS/6000, we have to return NO_REGS when we want to reload a 395 floating-point CONST_DOUBLE to force it to be copied to memory. 396 397 Don't allow R0 when loading the address of, or otherwise furtling with, 398 a SYMBOL_REF. */ 399 400 #undef PREFERRED_RELOAD_CLASS 401 #define PREFERRED_RELOAD_CLASS(X,CLASS) \ 402 ((CONSTANT_P (X) \ 403 && reg_classes_intersect_p ((CLASS), FLOAT_REGS)) \ 404 ? NO_REGS \ 405 : ((SYMBOL_REF_P (X) || GET_CODE (X) == HIGH) \ 406 && reg_class_subset_p (BASE_REGS, (CLASS))) \ 407 ? BASE_REGS \ 408 : (GET_MODE_CLASS (GET_MODE (X)) == MODE_INT \ 409 && (CLASS) == GEN_OR_FLOAT_REGS) \ 410 ? GENERAL_REGS \ 411 : (CLASS)) 412 413 /* Compute field alignment. 414 This implements the 'power' alignment rule by pegging the alignment of 415 items (beyond the first aggregate field) to 32 bits. The pegging is 416 suppressed for vector and long double items (both 128 in size). 417 There is a dummy use of the FIELD argument to avoid an unused variable 418 warning (see PR59496). */ 419 #define ADJUST_FIELD_ALIGN(FIELD, TYPE, COMPUTED) \ 420 ((void) (FIELD), \ 421 (TARGET_ALIGN_NATURAL \ 422 ? (COMPUTED) \ 423 : (COMPUTED) == 128 \ 424 ? 128 \ 425 : MIN ((COMPUTED), 32))) 426 427 /* Darwin increases natural record alignment to doubleword if the first 428 field is an FP double while the FP fields remain word aligned. */ 429 #define ROUND_TYPE_ALIGN(STRUCT, COMPUTED, SPECIFIED) \ 430 ((TREE_CODE (STRUCT) == RECORD_TYPE \ 431 || TREE_CODE (STRUCT) == UNION_TYPE \ 432 || TREE_CODE (STRUCT) == QUAL_UNION_TYPE) \ 433 && TARGET_ALIGN_NATURAL == 0 \ 434 ? darwin_rs6000_special_round_type_align (STRUCT, COMPUTED, SPECIFIED) \ 435 : (TREE_CODE (STRUCT) == VECTOR_TYPE \ 436 && ALTIVEC_VECTOR_MODE (TYPE_MODE (STRUCT))) \ 437 ? MAX (MAX ((COMPUTED), (SPECIFIED)), 128) \ 438 : MAX ((COMPUTED), (SPECIFIED))) 439 440 /* Specify padding for the last element of a block move between 441 registers and memory. FIRST is nonzero if this is the only 442 element. */ 443 #define BLOCK_REG_PADDING(MODE, TYPE, FIRST) \ 444 (!(FIRST) ? PAD_UPWARD : targetm.calls.function_arg_padding (MODE, TYPE)) 445 446 #define DOUBLE_INT_ASM_OP "\t.quad\t" 447 448 /* For binary compatibility with 2.95; Darwin C APIs use bool from 449 stdbool.h, which was an int-sized enum in 2.95. Users can explicitly 450 choose to have sizeof(bool)==1 with the -mone-byte-bool switch. */ 451 #define BOOL_TYPE_SIZE (darwin_one_byte_bool ? CHAR_TYPE_SIZE : INT_TYPE_SIZE) 452 453 #undef REGISTER_TARGET_PRAGMAS 454 #define REGISTER_TARGET_PRAGMAS() \ 455 do \ 456 { \ 457 DARWIN_REGISTER_TARGET_PRAGMAS(); \ 458 targetm.target_option.pragma_parse = rs6000_pragma_target_parse; \ 459 targetm.resolve_overloaded_builtin = altivec_resolve_overloaded_builtin; \ 460 } \ 461 while (0) 462 463 #ifdef IN_LIBGCC2 464 #include <stdbool.h> 465 #endif 466 467 /* True, iff we're generating fast turn around debugging code. When 468 true, we arrange for function prologues to start with 5 nops so 469 that gdb may insert code to redirect them, and for data to be 470 accessed indirectly. The runtime uses this indirection to forward 471 references for data to the original instance of that data. */ 472 473 #define TARGET_FIX_AND_CONTINUE (darwin_fix_and_continue) 474 475 /* This is the reserved direct dispatch address for Objective-C. */ 476 #define OFFS_MSGSEND_FAST 0xFFFEFF00 477 478 /* This is the reserved ivar address Objective-C. */ 479 #define OFFS_ASSIGNIVAR_FAST 0xFFFEFEC0 480 481 /* Old versions of Mac OS/Darwin don't have C99 functions available. */ 482 #undef TARGET_LIBC_HAS_FUNCTION 483 #define TARGET_LIBC_HAS_FUNCTION darwin_libc_has_function 484 485 /* When generating kernel code or kexts, we don't use Altivec by 486 default, as kernel code doesn't save/restore those registers. */ 487 #define OS_MISSING_ALTIVEC (flag_mkernel || flag_apple_kext) 488 489 /* Darwin has support for section anchors on powerpc*. 490 It is disabled for any section containing a "zero-sized item" (because these 491 are re-written as size=1 to be compatible with the OSX ld64). 492 The re-writing would interfere with the computation of anchor offsets. 493 Therefore, we place zero-sized items in their own sections and make such 494 sections unavailable to section anchoring. */ 495 496 #undef TARGET_ASM_OUTPUT_ANCHOR 497 #define TARGET_ASM_OUTPUT_ANCHOR darwin_asm_output_anchor 498 499 #undef TARGET_USE_ANCHORS_FOR_SYMBOL_P 500 #define TARGET_USE_ANCHORS_FOR_SYMBOL_P darwin_use_anchors_for_symbol_p 501 502 #undef DARWIN_SECTION_ANCHORS 503 #define DARWIN_SECTION_ANCHORS 1 504 505 /* PPC Darwin has to rename some of the long double builtins. */ 506 #undef SUBTARGET_INIT_BUILTINS 507 #define SUBTARGET_INIT_BUILTINS \ 508 do { \ 509 darwin_patch_builtins (); \ 510 if (new_builtins_are_live) \ 511 rs6000_builtin_decls_x[(unsigned) (RS6000_BIF_CFSTRING)] \ 512 = darwin_init_cfstring_builtins ((unsigned) (RS6000_BIF_CFSTRING)); \ 513 else \ 514 rs6000_builtin_decls[(unsigned) (RS6000_BUILTIN_CFSTRING)] \ 515 = darwin_init_cfstring_builtins ((unsigned) (RS6000_BUILTIN_CFSTRING)); \ 516 } while(0) 517 518 /* So far, there is no rs6000_fold_builtin, if one is introduced, then 519 this will need to be modified similar to the x86 case. */ 520 #define TARGET_FOLD_BUILTIN SUBTARGET_FOLD_BUILTIN 521 522 /* First available SYMBOL flag bit for use by subtargets. */ 523 #define SYMBOL_FLAG_SUBT_DEP (SYMBOL_FLAG_MACH_DEP) 524 525 /* Use standard DWARF numbering for DWARF debugging information. */ 526 #define RS6000_USE_DWARF_NUMBERING 527 528