Mercurial > hg > CbC > CbC_gcc
annotate gcc/config/i386/darwin.h @ 145:1830386684a0
gcc-9.2.0
| author | anatofuz |
|---|---|
| date | Thu, 13 Feb 2020 11:34:05 +0900 |
| parents | 84e7813d76e9 |
| children |
| rev | line source |
|---|---|
| 0 | 1 /* Target definitions for x86 running Darwin. |
| 145 | 2 Copyright (C) 2001-2020 Free Software Foundation, Inc. |
| 0 | 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 | |
| 8 it under the terms of the GNU General Public License as published by | |
| 9 the Free Software Foundation; either version 3, or (at your option) | |
| 10 any later version. | |
| 11 | |
| 12 GCC is distributed in the hope that it will be useful, | |
| 13 but WITHOUT ANY WARRANTY; without even the implied warranty of | |
| 14 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
| 15 GNU General Public 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 /* Enable Mach-O bits in generic x86 code. */ | |
| 22 #undef TARGET_MACHO | |
| 23 #define TARGET_MACHO 1 | |
| 24 | |
|
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25 #undef DARWIN_X86 |
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26 #define DARWIN_X86 1 |
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27 |
| 145 | 28 #undef TARGET_64BIT |
| 111 | 29 #define TARGET_64BIT TARGET_ISA_64BIT |
| 145 | 30 #undef TARGET_64BIT_P |
| 31 #define TARGET_64BIT_P(x) TARGET_ISA_64BIT_P(x) | |
| 0 | 32 |
| 33 #ifdef IN_LIBGCC2 | |
| 34 #undef TARGET_64BIT | |
| 35 #ifdef __x86_64__ | |
| 36 #define TARGET_64BIT 1 | |
| 37 #else | |
| 38 #define TARGET_64BIT 0 | |
| 39 #endif | |
| 40 #endif | |
| 41 | |
| 111 | 42 /* WORKAROUND pr80556: |
| 43 For x86_64 Darwin10 and later, the unwinder is in libunwind (redirected | |
| 44 from libSystem). This doesn't use the keymgr (see keymgr.c) and therefore | |
| 45 the calls that libgcc makes to obtain the KEYMGR_GCC3_DW2_OBJ_LIST are not | |
| 46 updated to include new images, and might not even be valid for a single | |
| 47 image. | |
| 48 Therefore, for 64b exes at least, we must use the libunwind implementation, | |
| 49 even when static-libgcc is specified. We put libSystem first so that | |
| 145 | 50 unwinder symbols are satisfied from there. |
| 51 We default to 64b for single-arch builds, so apply this unconditionally. */ | |
| 111 | 52 #undef REAL_LIBGCC_SPEC |
| 53 #define REAL_LIBGCC_SPEC \ | |
| 54 "%{static-libgcc|static: \ | |
| 145 | 55 %:version-compare(>= 10.6 mmacosx-version-min= -lSystem) \ |
| 56 -lgcc_eh -lgcc; \ | |
| 111 | 57 shared-libgcc|fexceptions|fgnu-runtime: \ |
| 58 %:version-compare(!> 10.5 mmacosx-version-min= -lgcc_s.10.4) \ | |
| 59 %:version-compare(>< 10.5 10.6 mmacosx-version-min= -lgcc_s.10.5) \ | |
| 60 %:version-compare(!> 10.5 mmacosx-version-min= -lgcc_ext.10.4) \ | |
| 61 %:version-compare(>= 10.5 mmacosx-version-min= -lgcc_ext.10.5) \ | |
| 62 -lgcc ; \ | |
| 63 :%:version-compare(>< 10.3.9 10.5 mmacosx-version-min= -lgcc_s.10.4) \ | |
| 64 %:version-compare(>< 10.5 10.6 mmacosx-version-min= -lgcc_s.10.5) \ | |
| 65 %:version-compare(!> 10.5 mmacosx-version-min= -lgcc_ext.10.4) \ | |
| 66 %:version-compare(>= 10.5 mmacosx-version-min= -lgcc_ext.10.5) \ | |
| 67 -lgcc }" | |
| 68 | |
| 0 | 69 /* Size of the Obj-C jump buffer. */ |
| 70 #define OBJC_JBLEN ((TARGET_64BIT) ? ((9 * 2) + 3 + 16) : (18)) | |
| 71 | |
| 72 #undef TARGET_FPMATH_DEFAULT | |
| 73 #define TARGET_FPMATH_DEFAULT (TARGET_SSE ? FPMATH_SSE : FPMATH_387) | |
| 145 | 74 #undef TARGET_FPMATH_DEFAULT_P |
| 75 #define TARGET_FPMATH_DEFAULT_P(x) \ | |
| 76 (TARGET_SSE_P(x) ? FPMATH_SSE : FPMATH_387) | |
| 0 | 77 |
| 78 #define TARGET_OS_CPP_BUILTINS() \ | |
| 145 | 79 do { \ |
| 80 builtin_define ("__LITTLE_ENDIAN__"); \ | |
| 81 darwin_cpp_builtins (pfile); \ | |
| 82 } while (0) | |
| 0 | 83 |
| 84 #undef PTRDIFF_TYPE | |
| 85 #define PTRDIFF_TYPE (TARGET_64BIT ? "long int" : "int") | |
| 86 | |
| 87 #undef WCHAR_TYPE | |
| 88 #define WCHAR_TYPE "int" | |
| 89 | |
| 90 #undef WCHAR_TYPE_SIZE | |
| 91 #define WCHAR_TYPE_SIZE 32 | |
| 92 | |
| 145 | 93 /* Generate pic symbol indirection stubs if this is true. */ |
| 94 #undef TARGET_MACHO_SYMBOL_STUBS | |
| 95 #define TARGET_MACHO_SYMBOL_STUBS (darwin_symbol_stubs) | |
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96 |
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97 /* For compatibility with OSX system tools, use the new style of pic stub |
| 145 | 98 if this is set (default). */ |
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99 #undef MACHOPIC_ATT_STUB |
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100 #define MACHOPIC_ATT_STUB (darwin_macho_att_stub) |
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101 |
| 0 | 102 #undef MAX_BITS_PER_WORD |
| 103 #define MAX_BITS_PER_WORD 64 | |
| 104 | |
| 105 #undef FORCE_PREFERRED_STACK_BOUNDARY_IN_MAIN | |
| 106 #define FORCE_PREFERRED_STACK_BOUNDARY_IN_MAIN (0) | |
| 107 | |
| 108 #undef TARGET_KEEPS_VECTOR_ALIGNED_STACK | |
| 109 #define TARGET_KEEPS_VECTOR_ALIGNED_STACK 1 | |
| 110 | |
| 111 /* On Darwin, the stack is 128-bit aligned at the point of every call. | |
| 112 Failure to ensure this will lead to a crash in the system libraries | |
| 113 or dynamic loader. */ | |
| 114 | |
| 115 #undef MAIN_STACK_BOUNDARY | |
| 116 #define MAIN_STACK_BOUNDARY 128 | |
| 117 | |
| 118 /* Since we'll never want a stack boundary less aligned than 128 bits | |
| 119 we need the extra work here otherwise bits of gcc get very grumpy | |
| 120 when we ask for lower alignment. We could just reject values less | |
| 121 than 128 bits for Darwin, but it's easier to up the alignment if | |
| 122 it's below the minimum. */ | |
| 123 #undef PREFERRED_STACK_BOUNDARY | |
| 145 | 124 #define PREFERRED_STACK_BOUNDARY \ |
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125 MAX (128, ix86_preferred_stack_boundary) |
| 0 | 126 |
| 127 /* We want -fPIC by default, unless we're using -static to compile for | |
| 128 the kernel or some such. */ | |
| 129 | |
| 130 #undef CC1_SPEC | |
| 131 #define CC1_SPEC "%(cc1_cpu) \ | |
| 132 %{!mkernel:%{!static:%{!mdynamic-no-pic:-fPIC}}} \ | |
| 145 | 133 %{g: %{!fno-eliminate-unused-debug-symbols: -feliminate-unused-debug-symbols }} \ |
| 134 %{mx32:%eDarwin is not an mx32 platform} \ | |
| 135 %{mfentry*:%eDarwin does not support -mfentry or associated options}" \ | |
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136 DARWIN_CC1_SPEC |
| 0 | 137 |
| 138 #undef ASM_SPEC | |
| 111 | 139 #define ASM_SPEC "-arch %(darwin_arch) \ |
| 140 " ASM_OPTIONS " -force_cpusubtype_ALL \ | |
| 141 %{static}" ASM_MMACOSX_VERSION_MIN_SPEC | |
| 0 | 142 |
| 143 #undef ENDFILE_SPEC | |
| 144 #define ENDFILE_SPEC \ | |
| 111 | 145 "%{Ofast|ffast-math|funsafe-math-optimizations:crtfastmath.o%s} \ |
| 0 | 146 %{mpc32:crtprec32.o%s} \ |
| 147 %{mpc64:crtprec64.o%s} \ | |
| 111 | 148 %{mpc80:crtprec80.o%s}" TM_DESTRUCTOR |
| 0 | 149 |
| 145 | 150 /* We default to x86_64 for single-arch builds, bi-arch overrides. */ |
| 151 #define DARWIN_ARCH_SPEC "x86_64" | |
| 152 | |
| 0 | 153 #undef SUBTARGET_EXTRA_SPECS |
| 154 #define SUBTARGET_EXTRA_SPECS \ | |
| 155 DARWIN_EXTRA_SPECS \ | |
| 145 | 156 { "darwin_arch", DARWIN_ARCH_SPEC }, \ |
| 0 | 157 { "darwin_crt2", "" }, \ |
| 145 | 158 { "darwin_subarch", DARWIN_ARCH_SPEC }, |
| 0 | 159 |
| 160 /* The Darwin assembler mostly follows AT&T syntax. */ | |
| 161 #undef ASSEMBLER_DIALECT | |
| 162 #define ASSEMBLER_DIALECT ASM_ATT | |
| 163 | |
| 164 /* Define macro used to output shift-double opcodes when the shift | |
| 165 count is in %cl. Some assemblers require %cl as an argument; | |
| 166 some don't. This macro controls what to do: by default, don't | |
| 167 print %cl. */ | |
| 168 | |
| 169 #define SHIFT_DOUBLE_OMITS_COUNT 0 | |
| 170 | |
| 171 #undef TARGET_ASM_FILE_END | |
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172 #define TARGET_ASM_FILE_END darwin_file_end |
| 0 | 173 |
| 174 /* Define the syntax of pseudo-ops, labels and comments. */ | |
| 175 | |
| 176 /* String containing the assembler's comment-starter. */ | |
| 177 | |
| 178 #define ASM_COMMENT_START "#" | |
| 179 | |
| 180 /* By default, target has a 80387, uses IEEE compatible arithmetic, | |
| 181 and returns float values in the 387. */ | |
| 182 | |
| 183 #undef TARGET_SUBTARGET_DEFAULT | |
| 145 | 184 #define TARGET_SUBTARGET_DEFAULT \ |
| 185 (MASK_80387 | MASK_IEEE_FP | MASK_FLOAT_RETURNS | MASK_128BIT_LONG_DOUBLE) | |
| 0 | 186 |
| 187 /* For darwin we want to target specific processor features as a minimum, | |
| 188 but these unfortunately don't correspond to a specific processor. */ | |
| 189 #undef TARGET_SUBTARGET32_ISA_DEFAULT | |
| 145 | 190 #define TARGET_SUBTARGET32_ISA_DEFAULT \ |
| 191 (OPTION_MASK_ISA_MMX | OPTION_MASK_ISA_SSE \ | |
| 192 | OPTION_MASK_ISA_SSE2 | OPTION_MASK_ISA_SSE3) | |
| 0 | 193 |
| 194 #undef TARGET_SUBTARGET64_ISA_DEFAULT | |
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195 #define TARGET_SUBTARGET64_ISA_DEFAULT TARGET_SUBTARGET32_ISA_DEFAULT |
| 0 | 196 |
| 197 #undef GOT_SYMBOL_NAME | |
| 198 #define GOT_SYMBOL_NAME MACHOPIC_FUNCTION_BASE_NAME | |
| 199 | |
| 200 /* Define the syntax of pseudo-ops, labels and comments. */ | |
| 201 | |
| 202 #define LPREFIX "L" | |
| 203 | |
| 204 /* Assembler pseudos to introduce constants of various size. */ | |
| 205 | |
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206 #define ASM_BYTE "\t.byte\t" |
| 0 | 207 #define ASM_SHORT "\t.word\t" |
| 208 #define ASM_LONG "\t.long\t" | |
| 209 #define ASM_QUAD "\t.quad\t" | |
| 210 | |
| 211 #define SUBTARGET_ENCODE_SECTION_INFO darwin_encode_section_info | |
| 212 | |
| 213 #undef ASM_OUTPUT_ALIGN | |
| 145 | 214 #define ASM_OUTPUT_ALIGN(FILE,LOG) \ |
| 215 do { \ | |
| 216 if ((LOG) != 0) \ | |
| 217 { \ | |
| 218 if (in_section == text_section) \ | |
| 219 fprintf (FILE, "\t%s %d,0x90\n", ALIGN_ASM_OP, (LOG)); \ | |
| 220 else \ | |
| 221 fprintf (FILE, "\t%s %d\n", ALIGN_ASM_OP, (LOG)); \ | |
| 222 } \ | |
| 223 } while (0) | |
| 0 | 224 |
| 145 | 225 #ifdef HAVE_GAS_MAX_SKIP_P2ALIGN |
| 226 #define ASM_OUTPUT_MAX_SKIP_ALIGN(FILE,LOG,MAX_SKIP) \ | |
| 227 do { \ | |
| 228 if ((LOG) != 0) { \ | |
| 229 if ((MAX_SKIP) == 0 || (MAX_SKIP) >= (1 << (LOG)) - 1) \ | |
| 230 fprintf ((FILE), "\t.p2align %d\n", (LOG)); \ | |
| 231 else \ | |
| 232 fprintf ((FILE), "\t.p2align %d,,%d\n", (LOG), (MAX_SKIP)); \ | |
| 233 } \ | |
| 234 } while (0) | |
| 235 #endif | |
| 236 | |
| 237 /* Darwin x86 assemblers support the .ident directive. */ | |
| 238 | |
| 239 #undef TARGET_ASM_OUTPUT_IDENT | |
| 240 #define TARGET_ASM_OUTPUT_IDENT default_asm_output_ident_directive | |
| 241 | |
| 242 /* Darwin profiling -- call mcount. | |
| 243 If we need a stub, then we unconditionally mark it as used. */ | |
| 0 | 244 #undef FUNCTION_PROFILER |
| 245 #define FUNCTION_PROFILER(FILE, LABELNO) \ | |
| 145 | 246 do { \ |
| 247 if (TARGET_MACHO_SYMBOL_STUBS \ | |
| 248 && MACHOPIC_INDIRECT && !TARGET_64BIT) \ | |
| 249 { \ | |
| 250 const char *name = machopic_mcount_stub_name (); \ | |
| 251 fprintf (FILE, "\tcall %s\n", name+1); /* skip '&' */ \ | |
| 252 } \ | |
| 253 else fprintf (FILE, "\tcall mcount\n"); \ | |
| 254 } while (0) | |
| 0 | 255 |
| 256 #define C_COMMON_OVERRIDE_OPTIONS \ | |
| 257 do { \ | |
| 258 SUBTARGET_C_COMMON_OVERRIDE_OPTIONS; \ | |
| 259 } while (0) | |
| 260 | |
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261 #undef SUBTARGET_OVERRIDE_OPTIONS |
| 145 | 262 #define SUBTARGET_OVERRIDE_OPTIONS \ |
| 263 do { \ | |
| 264 if (TARGET_64BIT && MACHO_DYNAMIC_NO_PIC_P) \ | |
| 265 target_flags &= ~MASK_MACHO_DYNAMIC_NO_PIC; \ | |
| 266 } while (0) | |
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267 |
| 0 | 268 /* Darwin on x86_64 uses dwarf-2 by default. Pre-darwin9 32-bit |
| 269 compiles default to stabs+. darwin9+ defaults to dwarf-2. */ | |
| 270 #ifndef DARWIN_PREFER_DWARF | |
| 271 #undef PREFERRED_DEBUGGING_TYPE | |
| 111 | 272 #ifdef HAVE_AS_STABS_DIRECTIVE |
| 0 | 273 #define PREFERRED_DEBUGGING_TYPE (TARGET_64BIT ? DWARF2_DEBUG : DBX_DEBUG) |
| 111 | 274 #else |
| 275 #define PREFERRED_DEBUGGING_TYPE DWARF2_DEBUG | |
| 276 #endif | |
| 0 | 277 #endif |
| 278 | |
| 279 /* Darwin uses the standard DWARF register numbers but the default | |
| 280 register numbers for STABS. Fortunately for 64-bit code the | |
| 281 default and the standard are the same. */ | |
| 282 #undef DBX_REGISTER_NUMBER | |
| 283 #define DBX_REGISTER_NUMBER(n) \ | |
| 284 (TARGET_64BIT ? dbx64_register_map[n] \ | |
| 285 : write_symbols == DWARF2_DEBUG ? svr4_dbx_register_map[n] \ | |
| 286 : dbx_register_map[n]) | |
| 287 | |
| 288 /* Unfortunately, the 32-bit EH information also doesn't use the standard | |
| 289 DWARF register numbers. */ | |
| 290 #define DWARF2_FRAME_REG_OUT(n, for_eh) \ | |
| 291 (! (for_eh) || write_symbols != DWARF2_DEBUG || TARGET_64BIT ? (n) \ | |
| 292 : (n) == 5 ? 4 \ | |
| 293 : (n) == 4 ? 5 \ | |
| 294 : (n) >= 11 && (n) <= 18 ? (n) + 1 \ | |
| 295 : (n)) | |
| 296 | |
| 297 #undef REGISTER_SUBTARGET_PRAGMAS | |
| 298 #define REGISTER_SUBTARGET_PRAGMAS() DARWIN_REGISTER_TARGET_PRAGMAS() | |
| 299 | |
| 300 #undef TARGET_SET_DEFAULT_TYPE_ATTRIBUTES | |
| 301 #define TARGET_SET_DEFAULT_TYPE_ATTRIBUTES darwin_set_default_type_attributes | |
| 302 | |
| 303 /* For 64-bit, we need to add 4 because @GOTPCREL is relative to the | |
| 304 end of the instruction, but without the 4 we'd only have the right | |
| 305 address for the start of the instruction. */ | |
| 306 #undef ASM_MAYBE_OUTPUT_ENCODED_ADDR_RTX | |
| 145 | 307 #define ASM_MAYBE_OUTPUT_ENCODED_ADDR_RTX(FILE, ENCODING, SIZE, ADDR, DONE) \ |
| 308 if (TARGET_64BIT) \ | |
| 309 { \ | |
| 310 if ((SIZE) == 4 && ((ENCODING) & 0x70) == DW_EH_PE_pcrel) \ | |
| 311 { \ | |
| 312 fputs (ASM_LONG, FILE); \ | |
| 313 assemble_name (FILE, XSTR (ADDR, 0)); \ | |
| 314 fputs ("+4@GOTPCREL", FILE); \ | |
| 315 goto DONE; \ | |
| 316 } \ | |
| 317 } \ | |
| 318 else \ | |
| 319 { \ | |
| 320 if (ENCODING == ASM_PREFERRED_EH_DATA_FORMAT (2, 1)) \ | |
| 321 { \ | |
| 322 darwin_non_lazy_pcrel (FILE, ADDR); \ | |
| 323 goto DONE; \ | |
| 324 } \ | |
| 0 | 325 } |
| 326 | |
| 145 | 327 /* First available SYMBOL flag bit for use by subtargets. */ |
| 328 #define SYMBOL_FLAG_SUBT_DEP (SYMBOL_FLAG_MACH_DEP << 5) | |
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329 |
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330 #undef MACHOPIC_NL_SYMBOL_PTR_SECTION |
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331 #define MACHOPIC_NL_SYMBOL_PTR_SECTION \ |
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332 ".section __IMPORT,__pointers,non_lazy_symbol_pointers" |
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333 |
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334 #define SUBTARGET32_DEFAULT_CPU "i686" |
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335 |
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336 #undef SUBTARGET_INIT_BUILTINS |
| 145 | 337 #define SUBTARGET_INIT_BUILTINS \ |
| 338 do { \ | |
| 339 ix86_builtins[(int) IX86_BUILTIN_CFSTRING] \ | |
| 340 = darwin_init_cfstring_builtins ((unsigned) (IX86_BUILTIN_CFSTRING)); \ | |
| 341 darwin_rename_builtins (); \ | |
| 342 } while(0) |