Mercurial > hg > CbC > CbC_gcc
annotate gcc/config/i386/darwin.h @ 131:84e7813d76e9
gcc-8.2
| author | mir3636 |
|---|---|
| date | Thu, 25 Oct 2018 07:37:49 +0900 |
| parents | 04ced10e8804 |
| children | 1830386684a0 |
| rev | line source |
|---|---|
| 0 | 1 /* Target definitions for x86 running Darwin. |
| 131 | 2 Copyright (C) 2001-2018 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 |
| 0 | 28 #undef TARGET_64BIT |
| 111 | 29 #undef TARGET_64BIT_P |
| 30 #define TARGET_64BIT TARGET_ISA_64BIT | |
| 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 | |
| 50 unwinder symbols are satisfied from there. */ | |
| 51 #undef REAL_LIBGCC_SPEC | |
| 52 #define REAL_LIBGCC_SPEC \ | |
| 53 "%{static-libgcc|static: \ | |
| 54 %{m64:%:version-compare(>= 10.6 mmacosx-version-min= -lSystem)} \ | |
| 55 -lgcc_eh -lgcc; \ | |
| 56 shared-libgcc|fexceptions|fgnu-runtime: \ | |
| 57 %:version-compare(!> 10.5 mmacosx-version-min= -lgcc_s.10.4) \ | |
| 58 %:version-compare(>< 10.5 10.6 mmacosx-version-min= -lgcc_s.10.5) \ | |
| 59 %:version-compare(!> 10.5 mmacosx-version-min= -lgcc_ext.10.4) \ | |
| 60 %:version-compare(>= 10.5 mmacosx-version-min= -lgcc_ext.10.5) \ | |
| 61 -lgcc ; \ | |
| 62 :%:version-compare(>< 10.3.9 10.5 mmacosx-version-min= -lgcc_s.10.4) \ | |
| 63 %:version-compare(>< 10.5 10.6 mmacosx-version-min= -lgcc_s.10.5) \ | |
| 64 %:version-compare(!> 10.5 mmacosx-version-min= -lgcc_ext.10.4) \ | |
| 65 %:version-compare(>= 10.5 mmacosx-version-min= -lgcc_ext.10.5) \ | |
| 66 -lgcc }" | |
| 67 | |
| 0 | 68 /* Size of the Obj-C jump buffer. */ |
| 69 #define OBJC_JBLEN ((TARGET_64BIT) ? ((9 * 2) + 3 + 16) : (18)) | |
| 70 | |
| 71 #undef TARGET_FPMATH_DEFAULT | |
| 72 #define TARGET_FPMATH_DEFAULT (TARGET_SSE ? FPMATH_SSE : FPMATH_387) | |
| 73 | |
| 74 #define TARGET_OS_CPP_BUILTINS() \ | |
| 75 do \ | |
| 76 { \ | |
| 77 builtin_define ("__LITTLE_ENDIAN__"); \ | |
| 78 darwin_cpp_builtins (pfile); \ | |
| 79 } \ | |
| 80 while (0) | |
| 81 | |
| 82 #undef PTRDIFF_TYPE | |
| 83 #define PTRDIFF_TYPE (TARGET_64BIT ? "long int" : "int") | |
| 84 | |
| 85 #undef WCHAR_TYPE | |
| 86 #define WCHAR_TYPE "int" | |
| 87 | |
| 88 #undef WCHAR_TYPE_SIZE | |
| 89 #define WCHAR_TYPE_SIZE 32 | |
| 90 | |
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91 /* Generate branch islands stubs if this is true. */ |
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92 extern int darwin_emit_branch_islands; |
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93 |
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94 #undef TARGET_MACHO_BRANCH_ISLANDS |
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95 #define TARGET_MACHO_BRANCH_ISLANDS darwin_emit_branch_islands |
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96 |
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97 /* For compatibility with OSX system tools, use the new style of pic stub |
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98 if this is set. */ |
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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 #undef STACK_BOUNDARY | |
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115 #define STACK_BOUNDARY \ |
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116 ((profile_flag || (TARGET_64BIT && ix86_abi == MS_ABI)) \ |
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117 ? 128 : BITS_PER_WORD) |
| 0 | 118 |
| 119 #undef MAIN_STACK_BOUNDARY | |
| 120 #define MAIN_STACK_BOUNDARY 128 | |
| 121 | |
| 122 /* Since we'll never want a stack boundary less aligned than 128 bits | |
| 123 we need the extra work here otherwise bits of gcc get very grumpy | |
| 124 when we ask for lower alignment. We could just reject values less | |
| 125 than 128 bits for Darwin, but it's easier to up the alignment if | |
| 126 it's below the minimum. */ | |
| 127 #undef PREFERRED_STACK_BOUNDARY | |
| 128 #define PREFERRED_STACK_BOUNDARY \ | |
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129 MAX (128, ix86_preferred_stack_boundary) |
| 0 | 130 |
| 131 /* We want -fPIC by default, unless we're using -static to compile for | |
| 132 the kernel or some such. */ | |
| 133 | |
| 134 #undef CC1_SPEC | |
| 135 #define CC1_SPEC "%(cc1_cpu) \ | |
| 136 %{!mkernel:%{!static:%{!mdynamic-no-pic:-fPIC}}} \ | |
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137 %{g: %{!fno-eliminate-unused-debug-symbols: -feliminate-unused-debug-symbols }} " \ |
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138 DARWIN_CC1_SPEC |
| 0 | 139 |
| 140 #undef ASM_SPEC | |
| 111 | 141 #define ASM_SPEC "-arch %(darwin_arch) \ |
| 142 " ASM_OPTIONS " -force_cpusubtype_ALL \ | |
| 143 %{static}" ASM_MMACOSX_VERSION_MIN_SPEC | |
| 0 | 144 |
| 145 #define DARWIN_ARCH_SPEC "%{m64:x86_64;:i386}" | |
| 146 #define DARWIN_SUBARCH_SPEC DARWIN_ARCH_SPEC | |
| 147 | |
| 148 #undef ENDFILE_SPEC | |
| 149 #define ENDFILE_SPEC \ | |
| 111 | 150 "%{Ofast|ffast-math|funsafe-math-optimizations:crtfastmath.o%s} \ |
| 0 | 151 %{mpc32:crtprec32.o%s} \ |
| 152 %{mpc64:crtprec64.o%s} \ | |
| 111 | 153 %{mpc80:crtprec80.o%s}" TM_DESTRUCTOR |
| 0 | 154 |
| 155 #undef SUBTARGET_EXTRA_SPECS | |
| 156 #define SUBTARGET_EXTRA_SPECS \ | |
| 157 DARWIN_EXTRA_SPECS \ | |
| 158 { "darwin_arch", DARWIN_ARCH_SPEC }, \ | |
| 159 { "darwin_crt2", "" }, \ | |
| 160 { "darwin_subarch", DARWIN_SUBARCH_SPEC }, | |
| 161 | |
| 162 /* The Darwin assembler mostly follows AT&T syntax. */ | |
| 163 #undef ASSEMBLER_DIALECT | |
| 164 #define ASSEMBLER_DIALECT ASM_ATT | |
| 165 | |
| 166 /* Define macro used to output shift-double opcodes when the shift | |
| 167 count is in %cl. Some assemblers require %cl as an argument; | |
| 168 some don't. This macro controls what to do: by default, don't | |
| 169 print %cl. */ | |
| 170 | |
| 171 #define SHIFT_DOUBLE_OMITS_COUNT 0 | |
| 172 | |
| 173 #undef TARGET_ASM_FILE_END | |
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174 #define TARGET_ASM_FILE_END darwin_file_end |
| 0 | 175 |
| 176 /* Define the syntax of pseudo-ops, labels and comments. */ | |
| 177 | |
| 178 /* String containing the assembler's comment-starter. */ | |
| 179 | |
| 180 #define ASM_COMMENT_START "#" | |
| 181 | |
| 182 /* By default, target has a 80387, uses IEEE compatible arithmetic, | |
| 183 and returns float values in the 387. */ | |
| 184 | |
| 185 #undef TARGET_SUBTARGET_DEFAULT | |
| 186 #define TARGET_SUBTARGET_DEFAULT (MASK_80387 | MASK_IEEE_FP | MASK_FLOAT_RETURNS | MASK_128BIT_LONG_DOUBLE) | |
| 187 | |
| 188 /* For darwin we want to target specific processor features as a minimum, | |
| 189 but these unfortunately don't correspond to a specific processor. */ | |
| 190 #undef TARGET_SUBTARGET32_ISA_DEFAULT | |
| 191 #define TARGET_SUBTARGET32_ISA_DEFAULT (OPTION_MASK_ISA_MMX \ | |
| 192 | OPTION_MASK_ISA_SSE \ | |
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193 | OPTION_MASK_ISA_SSE2 \ |
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194 | OPTION_MASK_ISA_SSE3) |
| 0 | 195 |
| 196 #undef TARGET_SUBTARGET64_ISA_DEFAULT | |
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197 #define TARGET_SUBTARGET64_ISA_DEFAULT TARGET_SUBTARGET32_ISA_DEFAULT |
| 0 | 198 |
| 199 #undef GOT_SYMBOL_NAME | |
| 200 #define GOT_SYMBOL_NAME MACHOPIC_FUNCTION_BASE_NAME | |
| 201 | |
| 202 /* Define the syntax of pseudo-ops, labels and comments. */ | |
| 203 | |
| 204 #define LPREFIX "L" | |
| 205 | |
| 206 /* Assembler pseudos to introduce constants of various size. */ | |
| 207 | |
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208 #define ASM_BYTE "\t.byte\t" |
| 0 | 209 #define ASM_SHORT "\t.word\t" |
| 210 #define ASM_LONG "\t.long\t" | |
| 211 #define ASM_QUAD "\t.quad\t" | |
| 212 | |
| 213 #define SUBTARGET_ENCODE_SECTION_INFO darwin_encode_section_info | |
| 214 | |
| 215 #undef ASM_OUTPUT_ALIGN | |
| 216 #define ASM_OUTPUT_ALIGN(FILE,LOG) \ | |
| 217 do { if ((LOG) != 0) \ | |
| 218 { \ | |
| 219 if (in_section == text_section) \ | |
| 220 fprintf (FILE, "\t%s %d,0x90\n", ALIGN_ASM_OP, (LOG)); \ | |
| 221 else \ | |
| 222 fprintf (FILE, "\t%s %d\n", ALIGN_ASM_OP, (LOG)); \ | |
| 223 } \ | |
| 224 } while (0) | |
| 225 | |
| 226 /* Darwin profiling -- call mcount. */ | |
| 227 #undef FUNCTION_PROFILER | |
| 228 #define FUNCTION_PROFILER(FILE, LABELNO) \ | |
| 229 do { \ | |
|
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230 if (TARGET_MACHO_BRANCH_ISLANDS \ |
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231 && MACHOPIC_INDIRECT && !TARGET_64BIT) \ |
| 0 | 232 { \ |
| 233 const char *name = machopic_mcount_stub_name (); \ | |
| 234 fprintf (FILE, "\tcall %s\n", name+1); /* skip '&' */ \ | |
| 235 machopic_validate_stub_or_non_lazy_ptr (name); \ | |
| 236 } \ | |
| 237 else fprintf (FILE, "\tcall mcount\n"); \ | |
| 238 } while (0) | |
| 239 | |
| 240 #define C_COMMON_OVERRIDE_OPTIONS \ | |
| 241 do { \ | |
| 242 SUBTARGET_C_COMMON_OVERRIDE_OPTIONS; \ | |
| 243 } while (0) | |
| 244 | |
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245 #undef SUBTARGET_OVERRIDE_OPTIONS |
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246 #define SUBTARGET_OVERRIDE_OPTIONS \ |
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247 do { \ |
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248 if (TARGET_64BIT && MACHO_DYNAMIC_NO_PIC_P) \ |
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249 target_flags &= ~MASK_MACHO_DYNAMIC_NO_PIC; \ |
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250 } while (0) |
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251 |
| 0 | 252 /* Darwin on x86_64 uses dwarf-2 by default. Pre-darwin9 32-bit |
| 253 compiles default to stabs+. darwin9+ defaults to dwarf-2. */ | |
| 254 #ifndef DARWIN_PREFER_DWARF | |
| 255 #undef PREFERRED_DEBUGGING_TYPE | |
| 111 | 256 #ifdef HAVE_AS_STABS_DIRECTIVE |
| 0 | 257 #define PREFERRED_DEBUGGING_TYPE (TARGET_64BIT ? DWARF2_DEBUG : DBX_DEBUG) |
| 111 | 258 #else |
| 259 #define PREFERRED_DEBUGGING_TYPE DWARF2_DEBUG | |
| 260 #endif | |
| 0 | 261 #endif |
| 262 | |
| 263 /* Darwin uses the standard DWARF register numbers but the default | |
| 264 register numbers for STABS. Fortunately for 64-bit code the | |
| 265 default and the standard are the same. */ | |
| 266 #undef DBX_REGISTER_NUMBER | |
| 267 #define DBX_REGISTER_NUMBER(n) \ | |
| 268 (TARGET_64BIT ? dbx64_register_map[n] \ | |
| 269 : write_symbols == DWARF2_DEBUG ? svr4_dbx_register_map[n] \ | |
| 270 : dbx_register_map[n]) | |
| 271 | |
| 272 /* Unfortunately, the 32-bit EH information also doesn't use the standard | |
| 273 DWARF register numbers. */ | |
| 274 #define DWARF2_FRAME_REG_OUT(n, for_eh) \ | |
| 275 (! (for_eh) || write_symbols != DWARF2_DEBUG || TARGET_64BIT ? (n) \ | |
| 276 : (n) == 5 ? 4 \ | |
| 277 : (n) == 4 ? 5 \ | |
| 278 : (n) >= 11 && (n) <= 18 ? (n) + 1 \ | |
| 279 : (n)) | |
| 280 | |
| 281 #undef REGISTER_SUBTARGET_PRAGMAS | |
| 282 #define REGISTER_SUBTARGET_PRAGMAS() DARWIN_REGISTER_TARGET_PRAGMAS() | |
| 283 | |
| 284 #undef TARGET_SET_DEFAULT_TYPE_ATTRIBUTES | |
| 285 #define TARGET_SET_DEFAULT_TYPE_ATTRIBUTES darwin_set_default_type_attributes | |
| 286 | |
| 287 /* For 64-bit, we need to add 4 because @GOTPCREL is relative to the | |
| 288 end of the instruction, but without the 4 we'd only have the right | |
| 289 address for the start of the instruction. */ | |
| 290 #undef ASM_MAYBE_OUTPUT_ENCODED_ADDR_RTX | |
| 291 #define ASM_MAYBE_OUTPUT_ENCODED_ADDR_RTX(FILE, ENCODING, SIZE, ADDR, DONE) \ | |
| 292 if (TARGET_64BIT) \ | |
| 293 { \ | |
| 294 if ((SIZE) == 4 && ((ENCODING) & 0x70) == DW_EH_PE_pcrel) \ | |
| 295 { \ | |
| 296 fputs (ASM_LONG, FILE); \ | |
| 297 assemble_name (FILE, XSTR (ADDR, 0)); \ | |
| 298 fputs ("+4@GOTPCREL", FILE); \ | |
| 299 goto DONE; \ | |
| 300 } \ | |
| 301 } \ | |
| 302 else \ | |
| 303 { \ | |
| 304 if (ENCODING == ASM_PREFERRED_EH_DATA_FORMAT (2, 1)) \ | |
| 305 { \ | |
| 306 darwin_non_lazy_pcrel (FILE, ADDR); \ | |
| 307 goto DONE; \ | |
| 308 } \ | |
| 309 } | |
| 310 | |
| 311 /* This needs to move since i386 uses the first flag and other flags are | |
| 312 used in Mach-O. */ | |
| 313 #undef MACHO_SYMBOL_FLAG_VARIABLE | |
| 314 #define MACHO_SYMBOL_FLAG_VARIABLE ((SYMBOL_FLAG_MACH_DEP) << 3) | |
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315 |
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316 #undef MACHOPIC_NL_SYMBOL_PTR_SECTION |
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317 #define MACHOPIC_NL_SYMBOL_PTR_SECTION \ |
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318 ".section __IMPORT,__pointers,non_lazy_symbol_pointers" |
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319 |
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320 #define SUBTARGET32_DEFAULT_CPU "i686" |
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321 |
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322 #undef SUBTARGET_INIT_BUILTINS |
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323 #define SUBTARGET_INIT_BUILTINS \ |
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324 do { \ |
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325 ix86_builtins[(int) IX86_BUILTIN_CFSTRING] \ |
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326 = darwin_init_cfstring_builtins ((unsigned) (IX86_BUILTIN_CFSTRING)); \ |
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327 darwin_rename_builtins (); \ |
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328 } while(0) |