Mercurial > hg > CbC > CbC_gcc
annotate gcc/config/rs6000/linux64.h @ 67:f6334be47118
update gcc from gcc-4.6-20100522 to gcc-4.6-20110318
| author | nobuyasu <dimolto@cr.ie.u-ryukyu.ac.jp> |
|---|---|
| date | Tue, 22 Mar 2011 17:18:12 +0900 |
| parents | b7f97abdc517 |
| children | 04ced10e8804 |
| rev | line source |
|---|---|
| 0 | 1 /* Definitions of target machine for GNU compiler, |
| 2 for 64 bit PowerPC linux. | |
| 3 Copyright (C) 2000, 2001, 2002, 2003, 2004, 2005, 2006, 2007, 2008, | |
|
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|
4 2009, 2010, 2011 Free Software Foundation, Inc. |
| 0 | 5 |
| 6 This file is part of GCC. | |
| 7 | |
| 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 3, or (at your | |
| 11 option) any later version. | |
| 12 | |
| 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. | |
| 17 | |
| 18 Under Section 7 of GPL version 3, you are granted additional | |
| 19 permissions described in the GCC Runtime Library Exception, version | |
| 20 3.1, as published by the Free Software Foundation. | |
| 21 | |
| 22 You should have received a copy of the GNU General Public License and | |
| 23 a copy of the GCC Runtime Library Exception along with this program; | |
| 24 see the files COPYING3 and COPYING.RUNTIME respectively. If not, see | |
| 25 <http://www.gnu.org/licenses/>. */ | |
| 26 | |
| 27 #ifndef RS6000_BI_ARCH | |
| 28 | |
| 29 #undef DEFAULT_ABI | |
| 30 #define DEFAULT_ABI ABI_AIX | |
| 31 | |
| 32 #undef TARGET_64BIT | |
| 33 #define TARGET_64BIT 1 | |
| 34 | |
| 35 #define DEFAULT_ARCH64_P 1 | |
| 36 #define RS6000_BI_ARCH_P 0 | |
| 37 | |
| 38 #else | |
| 39 | |
| 40 #define DEFAULT_ARCH64_P (TARGET_DEFAULT & MASK_64BIT) | |
| 41 #define RS6000_BI_ARCH_P 1 | |
| 42 | |
| 43 #endif | |
| 44 | |
| 45 #ifdef IN_LIBGCC2 | |
| 46 #undef TARGET_64BIT | |
| 47 #ifdef __powerpc64__ | |
| 48 #define TARGET_64BIT 1 | |
| 49 #else | |
| 50 #define TARGET_64BIT 0 | |
| 51 #endif | |
| 52 #endif | |
| 53 | |
| 54 #undef TARGET_AIX | |
| 55 #define TARGET_AIX TARGET_64BIT | |
| 56 | |
| 57 #ifdef HAVE_LD_NO_DOT_SYMS | |
| 58 /* New ABI uses a local sym for the function entry point. */ | |
| 59 extern int dot_symbols; | |
| 60 #undef DOT_SYMBOLS | |
| 61 #define DOT_SYMBOLS dot_symbols | |
| 62 #endif | |
| 63 | |
|
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64 #define TARGET_PROFILE_KERNEL profile_kernel |
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65 |
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66 #define TARGET_USES_LINUX64_OPT 1 |
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67 #ifdef HAVE_LD_LARGE_TOC |
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68 #undef TARGET_CMODEL |
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69 #define TARGET_CMODEL rs6000_current_cmodel |
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70 #define SET_CMODEL(opt) rs6000_current_cmodel = opt |
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71 #else |
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72 #define SET_CMODEL(opt) do {} while (0) |
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73 #endif |
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74 |
| 0 | 75 #undef PROCESSOR_DEFAULT |
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76 #define PROCESSOR_DEFAULT PROCESSOR_POWER7 |
| 0 | 77 #undef PROCESSOR_DEFAULT64 |
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78 #define PROCESSOR_DEFAULT64 PROCESSOR_POWER7 |
| 0 | 79 |
| 80 /* We don't need to generate entries in .fixup, except when | |
| 81 -mrelocatable or -mrelocatable-lib is given. */ | |
| 82 #undef RELOCATABLE_NEEDS_FIXUP | |
| 83 #define RELOCATABLE_NEEDS_FIXUP \ | |
| 84 (target_flags & target_flags_explicit & MASK_RELOCATABLE) | |
| 85 | |
| 86 #undef RS6000_ABI_NAME | |
| 87 #define RS6000_ABI_NAME "linux" | |
| 88 | |
| 89 #define INVALID_64BIT "-m%s not supported in this configuration" | |
| 90 #define INVALID_32BIT INVALID_64BIT | |
| 91 | |
| 92 #undef SUBSUBTARGET_OVERRIDE_OPTIONS | |
| 93 #define SUBSUBTARGET_OVERRIDE_OPTIONS \ | |
| 94 do \ | |
| 95 { \ | |
| 96 if (!rs6000_explicit_options.alignment) \ | |
| 97 rs6000_alignment_flags = MASK_ALIGN_NATURAL; \ | |
| 98 if (TARGET_64BIT) \ | |
| 99 { \ | |
| 100 if (DEFAULT_ABI != ABI_AIX) \ | |
| 101 { \ | |
| 102 rs6000_current_abi = ABI_AIX; \ | |
| 103 error (INVALID_64BIT, "call"); \ | |
| 104 } \ | |
| 105 dot_symbols = !strcmp (rs6000_abi_name, "aixdesc"); \ | |
| 106 if (target_flags & MASK_RELOCATABLE) \ | |
| 107 { \ | |
| 108 target_flags &= ~MASK_RELOCATABLE; \ | |
| 109 error (INVALID_64BIT, "relocatable"); \ | |
| 110 } \ | |
| 111 if (target_flags & MASK_EABI) \ | |
| 112 { \ | |
| 113 target_flags &= ~MASK_EABI; \ | |
| 114 error (INVALID_64BIT, "eabi"); \ | |
| 115 } \ | |
| 116 if (TARGET_PROTOTYPE) \ | |
| 117 { \ | |
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118 target_prototype = 0; \ |
| 0 | 119 error (INVALID_64BIT, "prototype"); \ |
| 120 } \ | |
| 121 if ((target_flags & MASK_POWERPC64) == 0) \ | |
| 122 { \ | |
| 123 target_flags |= MASK_POWERPC64; \ | |
| 124 error ("-m64 requires a PowerPC64 cpu"); \ | |
| 125 } \ | |
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126 if ((target_flags_explicit & MASK_MINIMAL_TOC) != 0) \ |
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127 { \ |
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128 if (rs6000_explicit_options.cmodel \ |
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129 && rs6000_current_cmodel != CMODEL_SMALL) \ |
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130 error ("-mcmodel incompatible with other toc options"); \ |
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131 SET_CMODEL (CMODEL_SMALL); \ |
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132 } \ |
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133 else \ |
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134 { \ |
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135 if (!rs6000_explicit_options.cmodel) \ |
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136 SET_CMODEL (CMODEL_MEDIUM); \ |
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137 if (rs6000_current_cmodel != CMODEL_SMALL) \ |
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138 { \ |
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139 TARGET_NO_FP_IN_TOC = 0; \ |
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140 TARGET_NO_SUM_IN_TOC = 0; \ |
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141 } \ |
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142 } \ |
| 0 | 143 } \ |
| 144 else \ | |
| 145 { \ | |
| 146 if (!RS6000_BI_ARCH_P) \ | |
| 147 error (INVALID_32BIT, "32"); \ | |
| 148 if (TARGET_PROFILE_KERNEL) \ | |
| 149 { \ | |
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150 TARGET_PROFILE_KERNEL = 0; \ |
| 0 | 151 error (INVALID_32BIT, "profile-kernel"); \ |
| 152 } \ | |
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153 if (rs6000_explicit_options.cmodel) \ |
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154 { \ |
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155 SET_CMODEL (CMODEL_SMALL); \ |
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156 error (INVALID_32BIT, "cmodel"); \ |
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157 } \ |
| 0 | 158 } \ |
| 159 } \ | |
| 160 while (0) | |
| 161 | |
| 162 #ifdef RS6000_BI_ARCH | |
| 163 | |
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164 #undef OPTION_TARGET_CPU_DEFAULT |
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165 #define OPTION_TARGET_CPU_DEFAULT \ |
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166 (((TARGET_DEFAULT ^ target_flags) & MASK_64BIT) \ |
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167 ? (char *) 0 : TARGET_CPU_DEFAULT) |
| 0 | 168 |
| 169 #endif | |
| 170 | |
| 171 #undef ASM_DEFAULT_SPEC | |
| 172 #undef ASM_SPEC | |
| 173 #undef LINK_OS_LINUX_SPEC | |
| 174 | |
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175 /* FIXME: This will quite possibly choose the wrong dynamic linker. */ |
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176 #undef LINK_OS_GNU_SPEC |
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177 #define LINK_OS_GNU_SPEC LINK_OS_LINUX_SPEC |
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178 |
| 0 | 179 #ifndef RS6000_BI_ARCH |
| 180 #define ASM_DEFAULT_SPEC "-mppc64" | |
| 181 #define ASM_SPEC "%(asm_spec64) %(asm_spec_common)" | |
| 182 #define LINK_OS_LINUX_SPEC "%(link_os_linux_spec64)" | |
| 183 #else | |
| 184 #if DEFAULT_ARCH64_P | |
| 185 #define ASM_DEFAULT_SPEC "-mppc%{!m32:64}" | |
| 186 #define ASM_SPEC "%{m32:%(asm_spec32)}%{!m32:%(asm_spec64)} %(asm_spec_common)" | |
| 187 #define LINK_OS_LINUX_SPEC "%{m32:%(link_os_linux_spec32)}%{!m32:%(link_os_linux_spec64)}" | |
| 188 #else | |
| 189 #define ASM_DEFAULT_SPEC "-mppc%{m64:64}" | |
| 190 #define ASM_SPEC "%{!m64:%(asm_spec32)}%{m64:%(asm_spec64)} %(asm_spec_common)" | |
| 191 #define LINK_OS_LINUX_SPEC "%{!m64:%(link_os_linux_spec32)}%{m64:%(link_os_linux_spec64)}" | |
| 192 #endif | |
| 193 #endif | |
| 194 | |
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195 #define ASM_SPEC32 "-a32 \ |
| 0 | 196 %{mrelocatable} %{mrelocatable-lib} %{fpic:-K PIC} %{fPIC:-K PIC} \ |
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197 %{memb} %{!memb: %{msdata=eabi: -memb}} \ |
| 0 | 198 %{!mlittle: %{!mlittle-endian: %{!mbig: %{!mbig-endian: \ |
| 199 %{mcall-freebsd: -mbig} \ | |
| 200 %{mcall-i960-old: -mlittle} \ | |
| 201 %{mcall-linux: -mbig} \ | |
| 202 %{mcall-gnu: -mbig} \ | |
| 203 %{mcall-netbsd: -mbig} \ | |
| 204 }}}}" | |
| 205 | |
| 206 #define ASM_SPEC64 "-a64" | |
| 207 | |
| 208 #define ASM_SPEC_COMMON "%(asm_cpu) \ | |
| 209 %{,assembler|,assembler-with-cpp: %{mregnames} %{mno-regnames}} \ | |
| 210 %{mlittle} %{mlittle-endian} %{mbig} %{mbig-endian}" | |
| 211 | |
| 212 #undef SUBSUBTARGET_EXTRA_SPECS | |
| 213 #define SUBSUBTARGET_EXTRA_SPECS \ | |
| 214 { "asm_spec_common", ASM_SPEC_COMMON }, \ | |
| 215 { "asm_spec32", ASM_SPEC32 }, \ | |
| 216 { "asm_spec64", ASM_SPEC64 }, \ | |
| 217 { "link_os_linux_spec32", LINK_OS_LINUX_SPEC32 }, \ | |
| 218 { "link_os_linux_spec64", LINK_OS_LINUX_SPEC64 }, | |
| 219 | |
| 220 #undef MULTILIB_DEFAULTS | |
| 221 #if DEFAULT_ARCH64_P | |
| 222 #define MULTILIB_DEFAULTS { "m64" } | |
| 223 #else | |
| 224 #define MULTILIB_DEFAULTS { "m32" } | |
| 225 #endif | |
| 226 | |
| 227 #ifndef RS6000_BI_ARCH | |
| 228 | |
| 229 /* 64-bit PowerPC Linux is always big-endian. */ | |
| 230 #undef TARGET_LITTLE_ENDIAN | |
| 231 #define TARGET_LITTLE_ENDIAN 0 | |
| 232 | |
| 233 /* 64-bit PowerPC Linux always has a TOC. */ | |
| 234 #undef TARGET_TOC | |
| 235 #define TARGET_TOC 1 | |
| 236 | |
| 237 /* Some things from sysv4.h we don't do when 64 bit. */ | |
| 238 #undef TARGET_RELOCATABLE | |
| 239 #define TARGET_RELOCATABLE 0 | |
| 240 #undef TARGET_EABI | |
| 241 #define TARGET_EABI 0 | |
| 242 #undef TARGET_PROTOTYPE | |
| 243 #define TARGET_PROTOTYPE 0 | |
| 244 #undef RELOCATABLE_NEEDS_FIXUP | |
| 245 #define RELOCATABLE_NEEDS_FIXUP 0 | |
| 246 | |
| 247 #endif | |
| 248 | |
| 249 /* We use glibc _mcount for profiling. */ | |
| 250 #define NO_PROFILE_COUNTERS 1 | |
| 251 #define PROFILE_HOOK(LABEL) \ | |
| 252 do { if (TARGET_64BIT) output_profile_hook (LABEL); } while (0) | |
| 253 | |
| 254 /* PowerPC64 Linux word-aligns FP doubles when -malign-power is given. */ | |
| 255 #undef ADJUST_FIELD_ALIGN | |
| 256 #define ADJUST_FIELD_ALIGN(FIELD, COMPUTED) \ | |
| 257 ((TARGET_ALTIVEC && TREE_CODE (TREE_TYPE (FIELD)) == VECTOR_TYPE) \ | |
| 258 ? 128 \ | |
| 259 : (TARGET_64BIT \ | |
| 260 && TARGET_ALIGN_NATURAL == 0 \ | |
| 261 && TYPE_MODE (strip_array_types (TREE_TYPE (FIELD))) == DFmode) \ | |
| 262 ? MIN ((COMPUTED), 32) \ | |
| 263 : (COMPUTED)) | |
| 264 | |
| 265 /* PowerPC64 Linux increases natural record alignment to doubleword if | |
| 266 the first field is an FP double, only if in power alignment mode. */ | |
| 267 #undef ROUND_TYPE_ALIGN | |
| 268 #define ROUND_TYPE_ALIGN(STRUCT, COMPUTED, SPECIFIED) \ | |
| 269 ((TARGET_64BIT \ | |
| 270 && (TREE_CODE (STRUCT) == RECORD_TYPE \ | |
| 271 || TREE_CODE (STRUCT) == UNION_TYPE \ | |
| 272 || TREE_CODE (STRUCT) == QUAL_UNION_TYPE) \ | |
| 273 && TARGET_ALIGN_NATURAL == 0) \ | |
| 274 ? rs6000_special_round_type_align (STRUCT, COMPUTED, SPECIFIED) \ | |
| 275 : MAX ((COMPUTED), (SPECIFIED))) | |
| 276 | |
| 277 /* Use the default for compiling target libs. */ | |
| 278 #ifdef IN_TARGET_LIBS | |
| 279 #undef TARGET_ALIGN_NATURAL | |
| 280 #define TARGET_ALIGN_NATURAL 1 | |
| 281 #endif | |
| 282 | |
| 283 /* Indicate that jump tables go in the text section. */ | |
| 284 #undef JUMP_TABLES_IN_TEXT_SECTION | |
| 285 #define JUMP_TABLES_IN_TEXT_SECTION TARGET_64BIT | |
| 286 | |
| 287 /* The linux ppc64 ABI isn't explicit on whether aggregates smaller | |
| 288 than a doubleword should be padded upward or downward. You could | |
| 289 reasonably assume that they follow the normal rules for structure | |
| 290 layout treating the parameter area as any other block of memory, | |
| 291 then map the reg param area to registers. i.e. pad upward. | |
| 292 Setting both of the following defines results in this behavior. | |
| 293 Setting just the first one will result in aggregates that fit in a | |
| 294 doubleword being padded downward, and others being padded upward. | |
| 295 Not a bad idea as this results in struct { int x; } being passed | |
| 296 the same way as an int. */ | |
| 297 #define AGGREGATE_PADDING_FIXED TARGET_64BIT | |
| 298 #define AGGREGATES_PAD_UPWARD_ALWAYS 0 | |
| 299 | |
| 300 /* Specify padding for the last element of a block move between | |
| 301 registers and memory. FIRST is nonzero if this is the only | |
| 302 element. */ | |
| 303 #define BLOCK_REG_PADDING(MODE, TYPE, FIRST) \ | |
| 304 (!(FIRST) ? upward : FUNCTION_ARG_PADDING (MODE, TYPE)) | |
| 305 | |
| 306 /* Linux doesn't support saving and restoring 64-bit regs in a 32-bit | |
| 307 process. */ | |
| 308 #define OS_MISSING_POWERPC64 !TARGET_64BIT | |
| 309 | |
|
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310 #ifdef SINGLE_LIBC |
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311 #define OPTION_GLIBC (DEFAULT_LIBC == LIBC_GLIBC) |
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312 #else |
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313 #define OPTION_GLIBC (linux_libc == LIBC_GLIBC) |
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314 #endif |
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315 |
| 0 | 316 /* glibc has float and long double forms of math functions. */ |
| 317 #undef TARGET_C99_FUNCTIONS | |
| 318 #define TARGET_C99_FUNCTIONS (OPTION_GLIBC) | |
| 319 | |
| 320 /* Whether we have sincos that follows the GNU extension. */ | |
| 321 #undef TARGET_HAS_SINCOS | |
| 322 #define TARGET_HAS_SINCOS (OPTION_GLIBC) | |
| 323 | |
| 324 #undef TARGET_OS_CPP_BUILTINS | |
| 325 #define TARGET_OS_CPP_BUILTINS() \ | |
| 326 do \ | |
| 327 { \ | |
| 328 if (TARGET_64BIT) \ | |
| 329 { \ | |
| 330 builtin_define ("__PPC__"); \ | |
| 331 builtin_define ("__PPC64__"); \ | |
| 332 builtin_define ("__powerpc__"); \ | |
| 333 builtin_define ("__powerpc64__"); \ | |
| 334 builtin_assert ("cpu=powerpc64"); \ | |
| 335 builtin_assert ("machine=powerpc64"); \ | |
| 336 } \ | |
| 337 else \ | |
| 338 { \ | |
| 339 builtin_define_std ("PPC"); \ | |
| 340 builtin_define_std ("powerpc"); \ | |
| 341 builtin_assert ("cpu=powerpc"); \ | |
| 342 builtin_assert ("machine=powerpc"); \ | |
| 343 TARGET_OS_SYSV_CPP_BUILTINS (); \ | |
| 344 } \ | |
| 345 } \ | |
| 346 while (0) | |
| 347 | |
| 348 #undef CPP_OS_DEFAULT_SPEC | |
| 349 #define CPP_OS_DEFAULT_SPEC "%(cpp_os_linux)" | |
| 350 | |
| 351 /* The GNU C++ standard library currently requires _GNU_SOURCE being | |
| 352 defined on glibc-based systems. This temporary hack accomplishes this, | |
| 353 it should go away as soon as libstdc++-v3 has a real fix. */ | |
| 354 #undef CPLUSPLUS_CPP_SPEC | |
| 355 #define CPLUSPLUS_CPP_SPEC "-D_GNU_SOURCE %(cpp)" | |
| 356 | |
| 357 #undef LINK_SHLIB_SPEC | |
| 358 #define LINK_SHLIB_SPEC "%{shared:-shared} %{!shared: %{static:-static}}" | |
| 359 | |
| 360 #undef LIB_DEFAULT_SPEC | |
| 361 #define LIB_DEFAULT_SPEC "%(lib_linux)" | |
| 362 | |
| 363 #undef STARTFILE_DEFAULT_SPEC | |
| 364 #define STARTFILE_DEFAULT_SPEC "%(startfile_linux)" | |
| 365 | |
| 366 #undef ENDFILE_DEFAULT_SPEC | |
| 367 #define ENDFILE_DEFAULT_SPEC "%(endfile_linux)" | |
| 368 | |
| 369 #undef LINK_START_DEFAULT_SPEC | |
| 370 #define LINK_START_DEFAULT_SPEC "%(link_start_linux)" | |
| 371 | |
| 372 #undef LINK_OS_DEFAULT_SPEC | |
| 373 #define LINK_OS_DEFAULT_SPEC "%(link_os_linux)" | |
| 374 | |
| 375 #define GLIBC_DYNAMIC_LINKER32 "/lib/ld.so.1" | |
| 376 #define GLIBC_DYNAMIC_LINKER64 "/lib64/ld64.so.1" | |
| 377 #define UCLIBC_DYNAMIC_LINKER32 "/lib/ld-uClibc.so.0" | |
| 378 #define UCLIBC_DYNAMIC_LINKER64 "/lib/ld64-uClibc.so.0" | |
|
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379 #if DEFAULT_LIBC == LIBC_UCLIBC |
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380 #define CHOOSE_DYNAMIC_LINKER(G, U) "%{mglibc:" G ";:" U "}" |
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381 #elif DEFAULT_LIBC == LIBC_GLIBC |
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382 #define CHOOSE_DYNAMIC_LINKER(G, U) "%{muclibc:" U ";:" G "}" |
| 0 | 383 #else |
|
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384 #error "Unsupported DEFAULT_LIBC" |
| 0 | 385 #endif |
| 386 #define LINUX_DYNAMIC_LINKER32 \ | |
| 387 CHOOSE_DYNAMIC_LINKER (GLIBC_DYNAMIC_LINKER32, UCLIBC_DYNAMIC_LINKER32) | |
| 388 #define LINUX_DYNAMIC_LINKER64 \ | |
| 389 CHOOSE_DYNAMIC_LINKER (GLIBC_DYNAMIC_LINKER64, UCLIBC_DYNAMIC_LINKER64) | |
| 390 | |
| 391 | |
| 392 #define LINK_OS_LINUX_SPEC32 "-m elf32ppclinux %{!shared: %{!static: \ | |
| 393 %{rdynamic:-export-dynamic} \ | |
|
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394 -dynamic-linker " LINUX_DYNAMIC_LINKER32 "}}" |
| 0 | 395 |
| 396 #define LINK_OS_LINUX_SPEC64 "-m elf64ppc %{!shared: %{!static: \ | |
| 397 %{rdynamic:-export-dynamic} \ | |
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398 -dynamic-linker " LINUX_DYNAMIC_LINKER64 "}}" |
| 0 | 399 |
| 400 #undef TOC_SECTION_ASM_OP | |
| 401 #define TOC_SECTION_ASM_OP \ | |
| 402 (TARGET_64BIT \ | |
| 403 ? "\t.section\t\".toc\",\"aw\"" \ | |
| 404 : "\t.section\t\".got\",\"aw\"") | |
| 405 | |
| 406 #undef MINIMAL_TOC_SECTION_ASM_OP | |
| 407 #define MINIMAL_TOC_SECTION_ASM_OP \ | |
| 408 (TARGET_64BIT \ | |
| 409 ? "\t.section\t\".toc1\",\"aw\"" \ | |
| 410 : ((TARGET_RELOCATABLE || flag_pic) \ | |
| 411 ? "\t.section\t\".got2\",\"aw\"" \ | |
| 412 : "\t.section\t\".got1\",\"aw\"")) | |
| 413 | |
| 414 #undef TARGET_VERSION | |
| 415 #define TARGET_VERSION fprintf (stderr, " (PowerPC64 GNU/Linux)"); | |
| 416 | |
| 417 /* Must be at least as big as our pointer type. */ | |
| 418 #undef SIZE_TYPE | |
| 419 #define SIZE_TYPE (TARGET_64BIT ? "long unsigned int" : "unsigned int") | |
| 420 | |
| 421 #undef PTRDIFF_TYPE | |
| 422 #define PTRDIFF_TYPE (TARGET_64BIT ? "long int" : "int") | |
| 423 | |
| 424 #undef WCHAR_TYPE | |
| 425 #define WCHAR_TYPE (TARGET_64BIT ? "int" : "long int") | |
| 426 #undef WCHAR_TYPE_SIZE | |
| 427 #define WCHAR_TYPE_SIZE 32 | |
| 428 | |
| 429 /* Override rs6000.h definition. */ | |
| 430 #undef ASM_APP_ON | |
| 431 #define ASM_APP_ON "#APP\n" | |
| 432 | |
| 433 /* Override rs6000.h definition. */ | |
| 434 #undef ASM_APP_OFF | |
| 435 #define ASM_APP_OFF "#NO_APP\n" | |
| 436 | |
| 437 /* PowerPC no-op instruction. */ | |
| 438 #undef RS6000_CALL_GLUE | |
| 439 #define RS6000_CALL_GLUE (TARGET_64BIT ? "nop" : "cror 31,31,31") | |
| 440 | |
| 441 #undef RS6000_MCOUNT | |
| 442 #define RS6000_MCOUNT "_mcount" | |
| 443 | |
| 444 #ifdef __powerpc64__ | |
| 445 /* _init and _fini functions are built from bits spread across many | |
| 446 object files, each potentially with a different TOC pointer. For | |
| 447 that reason, place a nop after the call so that the linker can | |
| 448 restore the TOC pointer if a TOC adjusting call stub is needed. */ | |
| 449 #if DOT_SYMBOLS | |
| 450 #define CRT_CALL_STATIC_FUNCTION(SECTION_OP, FUNC) \ | |
| 451 asm (SECTION_OP "\n" \ | |
| 452 " bl ." #FUNC "\n" \ | |
| 453 " nop\n" \ | |
| 454 " .previous"); | |
| 455 #else | |
| 456 #define CRT_CALL_STATIC_FUNCTION(SECTION_OP, FUNC) \ | |
| 457 asm (SECTION_OP "\n" \ | |
| 458 " bl " #FUNC "\n" \ | |
| 459 " nop\n" \ | |
| 460 " .previous"); | |
| 461 #endif | |
| 462 #endif | |
| 463 | |
| 464 /* FP save and restore routines. */ | |
| 465 #undef SAVE_FP_PREFIX | |
| 466 #define SAVE_FP_PREFIX (TARGET_64BIT ? "._savef" : "_savefpr_") | |
| 467 #undef SAVE_FP_SUFFIX | |
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468 #define SAVE_FP_SUFFIX "" |
| 0 | 469 #undef RESTORE_FP_PREFIX |
| 470 #define RESTORE_FP_PREFIX (TARGET_64BIT ? "._restf" : "_restfpr_") | |
| 471 #undef RESTORE_FP_SUFFIX | |
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472 #define RESTORE_FP_SUFFIX "" |
| 0 | 473 |
| 474 /* Dwarf2 debugging. */ | |
| 475 #undef PREFERRED_DEBUGGING_TYPE | |
| 476 #define PREFERRED_DEBUGGING_TYPE DWARF2_DEBUG | |
| 477 | |
| 478 /* This is how to declare the size of a function. */ | |
| 479 #undef ASM_DECLARE_FUNCTION_SIZE | |
| 480 #define ASM_DECLARE_FUNCTION_SIZE(FILE, FNAME, DECL) \ | |
| 481 do \ | |
| 482 { \ | |
| 483 if (!flag_inhibit_size_directive) \ | |
| 484 { \ | |
| 485 fputs ("\t.size\t", (FILE)); \ | |
| 486 if (TARGET_64BIT && DOT_SYMBOLS) \ | |
| 487 putc ('.', (FILE)); \ | |
| 488 assemble_name ((FILE), (FNAME)); \ | |
| 489 fputs (",.-", (FILE)); \ | |
| 490 rs6000_output_function_entry (FILE, FNAME); \ | |
| 491 putc ('\n', (FILE)); \ | |
| 492 } \ | |
| 493 } \ | |
| 494 while (0) | |
| 495 | |
| 496 /* Return nonzero if this entry is to be written into the constant | |
| 497 pool in a special way. We do so if this is a SYMBOL_REF, LABEL_REF | |
| 498 or a CONST containing one of them. If -mfp-in-toc (the default), | |
| 499 we also do this for floating-point constants. We actually can only | |
| 500 do this if the FP formats of the target and host machines are the | |
| 501 same, but we can't check that since not every file that uses | |
|
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502 the macros includes real.h. We also do this when we can write the |
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503 entry into the TOC and the entry is not larger than a TOC entry. */ |
| 0 | 504 |
| 505 #undef ASM_OUTPUT_SPECIAL_POOL_ENTRY_P | |
| 506 #define ASM_OUTPUT_SPECIAL_POOL_ENTRY_P(X, MODE) \ | |
| 507 (TARGET_TOC \ | |
| 508 && (GET_CODE (X) == SYMBOL_REF \ | |
| 509 || (GET_CODE (X) == CONST && GET_CODE (XEXP (X, 0)) == PLUS \ | |
| 510 && GET_CODE (XEXP (XEXP (X, 0), 0)) == SYMBOL_REF) \ | |
| 511 || GET_CODE (X) == LABEL_REF \ | |
| 512 || (GET_CODE (X) == CONST_INT \ | |
| 513 && GET_MODE_BITSIZE (MODE) <= GET_MODE_BITSIZE (Pmode)) \ | |
| 514 || (GET_CODE (X) == CONST_DOUBLE \ | |
| 515 && ((TARGET_64BIT \ | |
| 516 && (TARGET_MINIMAL_TOC \ | |
| 517 || (SCALAR_FLOAT_MODE_P (GET_MODE (X)) \ | |
| 518 && ! TARGET_NO_FP_IN_TOC))) \ | |
| 519 || (!TARGET_64BIT \ | |
| 520 && !TARGET_NO_FP_IN_TOC \ | |
| 521 && !TARGET_RELOCATABLE \ | |
| 522 && SCALAR_FLOAT_MODE_P (GET_MODE (X)) \ | |
| 523 && BITS_PER_WORD == HOST_BITS_PER_INT))))) | |
| 524 | |
| 525 /* Select a format to encode pointers in exception handling data. CODE | |
| 526 is 0 for data, 1 for code labels, 2 for function pointers. GLOBAL is | |
| 527 true if the symbol may be affected by dynamic relocations. */ | |
| 528 #undef ASM_PREFERRED_EH_DATA_FORMAT | |
| 529 #define ASM_PREFERRED_EH_DATA_FORMAT(CODE, GLOBAL) \ | |
| 530 ((TARGET_64BIT || flag_pic || TARGET_RELOCATABLE) \ | |
| 531 ? (((GLOBAL) ? DW_EH_PE_indirect : 0) | DW_EH_PE_pcrel \ | |
| 532 | (TARGET_64BIT ? DW_EH_PE_udata8 : DW_EH_PE_sdata4)) \ | |
| 533 : DW_EH_PE_absptr) | |
| 534 | |
| 535 /* For backward compatibility, we must continue to use the AIX | |
| 536 structure return convention. */ | |
| 537 #undef DRAFT_V4_STRUCT_RET | |
| 538 #define DRAFT_V4_STRUCT_RET (!TARGET_64BIT) | |
| 539 | |
| 540 #define TARGET_POSIX_IO | |
| 541 | |
| 542 #define LINK_GCC_C_SEQUENCE_SPEC \ | |
| 543 "%{static:--start-group} %G %L %{static:--end-group}%{!static:%G}" | |
| 544 | |
| 545 /* Use --as-needed -lgcc_s for eh support. */ | |
| 546 #ifdef HAVE_LD_AS_NEEDED | |
| 547 #define USE_LD_AS_NEEDED 1 | |
| 548 #endif | |
| 549 | |
| 550 #define MD_UNWIND_SUPPORT "config/rs6000/linux-unwind.h" | |
| 551 | |
| 552 #ifdef TARGET_LIBC_PROVIDES_SSP | |
| 553 /* ppc32 glibc provides __stack_chk_guard in -0x7008(2), | |
| 554 ppc64 glibc provides it at -0x7010(13). */ | |
| 555 #define TARGET_THREAD_SSP_OFFSET (TARGET_64BIT ? -0x7010 : -0x7008) | |
| 556 #endif | |
| 557 | |
| 558 #define POWERPC_LINUX | |
| 559 | |
| 560 /* ppc{32,64} linux has 128-bit long double support in glibc 2.4 and later. */ | |
| 561 #ifdef TARGET_DEFAULT_LONG_DOUBLE_128 | |
| 562 #define RS6000_DEFAULT_LONG_DOUBLE_SIZE 128 | |
| 563 #endif | |
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564 |
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565 /* Static stack checking is supported by means of probes. */ |
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566 #define STACK_CHECK_STATIC_BUILTIN 1 |
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567 |
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568 /* The default value isn't sufficient in 64-bit mode. */ |
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569 #define STACK_CHECK_PROTECT (TARGET_64BIT ? 16 * 1024 : 12 * 1024) |