| 1 | /* Definitions of target machine for GNU compiler, |
| 2 | for 64 bit PowerPC linux. |
| 3 | Copyright (C) 2000-2015 Free Software Foundation, 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 | Under Section 7 of GPL version 3, you are granted additional |
| 18 | permissions described in the GCC Runtime Library Exception, version |
| 19 | 3.1, as published by the Free Software Foundation. |
| 20 | |
| 21 | You should have received a copy of the GNU General Public License and |
| 22 | a copy of the GCC Runtime Library Exception along with this program; |
| 23 | see the files COPYING3 and COPYING.RUNTIME respectively. If not, see |
| 24 | <http://www.gnu.org/licenses/>. */ |
| 25 | |
| 26 | #ifndef RS6000_BI_ARCH |
| 27 | |
| 28 | #undef TARGET_64BIT |
| 29 | #define TARGET_64BIT 1 |
| 30 | |
| 31 | #define DEFAULT_ARCH64_P 1 |
| 32 | #define RS6000_BI_ARCH_P 0 |
| 33 | |
| 34 | #else |
| 35 | |
| 36 | #define DEFAULT_ARCH64_P (TARGET_DEFAULT & MASK_64BIT) |
| 37 | #define RS6000_BI_ARCH_P 1 |
| 38 | |
| 39 | #endif |
| 40 | |
| 41 | #ifdef IN_LIBGCC2 |
| 42 | #undef TARGET_64BIT |
| 43 | #ifdef __powerpc64__ |
| 44 | #define TARGET_64BIT 1 |
| 45 | #else |
| 46 | #define TARGET_64BIT 0 |
| 47 | #endif |
| 48 | #endif |
| 49 | |
| 50 | #undef TARGET_AIX |
| 51 | #define TARGET_AIX TARGET_64BIT |
| 52 | |
| 53 | #ifdef HAVE_LD_NO_DOT_SYMS |
| 54 | /* New ABI uses a local sym for the function entry point. */ |
| 55 | extern int dot_symbols; |
| 56 | #undef DOT_SYMBOLS |
| 57 | #define DOT_SYMBOLS dot_symbols |
| 58 | #endif |
| 59 | |
| 60 | #define TARGET_PROFILE_KERNEL profile_kernel |
| 61 | |
| 62 | #define TARGET_USES_LINUX64_OPT 1 |
| 63 | #ifdef HAVE_LD_LARGE_TOC |
| 64 | #undef TARGET_CMODEL |
| 65 | #define TARGET_CMODEL rs6000_current_cmodel |
| 66 | #define SET_CMODEL(opt) rs6000_current_cmodel = opt |
| 67 | #else |
| 68 | #define SET_CMODEL(opt) do {} while (0) |
| 69 | #endif |
| 70 | |
| 71 | #undef PROCESSOR_DEFAULT |
| 72 | #define PROCESSOR_DEFAULT PROCESSOR_POWER7 |
| 73 | #undef PROCESSOR_DEFAULT64 |
| 74 | #define PROCESSOR_DEFAULT64 PROCESSOR_POWER8 |
| 75 | |
| 76 | /* We don't need to generate entries in .fixup, except when |
| 77 | -mrelocatable or -mrelocatable-lib is given. */ |
| 78 | #undef RELOCATABLE_NEEDS_FIXUP |
| 79 | #define RELOCATABLE_NEEDS_FIXUP \ |
| 80 | (rs6000_isa_flags & rs6000_isa_flags_explicit & OPTION_MASK_RELOCATABLE) |
| 81 | |
| 82 | #undef RS6000_ABI_NAME |
| 83 | #define RS6000_ABI_NAME "linux" |
| 84 | |
| 85 | #define INVALID_64BIT "-m%s not supported in this configuration" |
| 86 | #define INVALID_32BIT INVALID_64BIT |
| 87 | |
| 88 | #ifdef LINUX64_DEFAULT_ABI_ELFv2 |
| 89 | #define ELFv2_ABI_CHECK (rs6000_elf_abi != 1) |
| 90 | #else |
| 91 | #define ELFv2_ABI_CHECK (rs6000_elf_abi == 2) |
| 92 | #endif |
| 93 | |
| 94 | #undef SUBSUBTARGET_OVERRIDE_OPTIONS |
| 95 | #define SUBSUBTARGET_OVERRIDE_OPTIONS \ |
| 96 | do \ |
| 97 | { \ |
| 98 | if (!global_options_set.x_rs6000_alignment_flags) \ |
| 99 | rs6000_alignment_flags = MASK_ALIGN_NATURAL; \ |
| 100 | if (rs6000_isa_flags & OPTION_MASK_64BIT) \ |
| 101 | { \ |
| 102 | if (DEFAULT_ABI != ABI_AIX) \ |
| 103 | { \ |
| 104 | rs6000_current_abi = ABI_AIX; \ |
| 105 | error (INVALID_64BIT, "call"); \ |
| 106 | } \ |
| 107 | dot_symbols = !strcmp (rs6000_abi_name, "aixdesc"); \ |
| 108 | if (ELFv2_ABI_CHECK) \ |
| 109 | { \ |
| 110 | rs6000_current_abi = ABI_ELFv2; \ |
| 111 | if (dot_symbols) \ |
| 112 | error ("-mcall-aixdesc incompatible with -mabi=elfv2"); \ |
| 113 | } \ |
| 114 | if (rs6000_isa_flags & OPTION_MASK_RELOCATABLE) \ |
| 115 | { \ |
| 116 | rs6000_isa_flags &= ~OPTION_MASK_RELOCATABLE; \ |
| 117 | error (INVALID_64BIT, "relocatable"); \ |
| 118 | } \ |
| 119 | if (rs6000_isa_flags & OPTION_MASK_EABI) \ |
| 120 | { \ |
| 121 | rs6000_isa_flags &= ~OPTION_MASK_EABI; \ |
| 122 | error (INVALID_64BIT, "eabi"); \ |
| 123 | } \ |
| 124 | if (TARGET_PROTOTYPE) \ |
| 125 | { \ |
| 126 | target_prototype = 0; \ |
| 127 | error (INVALID_64BIT, "prototype"); \ |
| 128 | } \ |
| 129 | if ((rs6000_isa_flags & OPTION_MASK_POWERPC64) == 0) \ |
| 130 | { \ |
| 131 | rs6000_isa_flags |= OPTION_MASK_POWERPC64; \ |
| 132 | error ("-m64 requires a PowerPC64 cpu"); \ |
| 133 | } \ |
| 134 | if ((rs6000_isa_flags_explicit \ |
| 135 | & OPTION_MASK_MINIMAL_TOC) != 0) \ |
| 136 | { \ |
| 137 | if (global_options_set.x_rs6000_current_cmodel \ |
| 138 | && rs6000_current_cmodel != CMODEL_SMALL) \ |
| 139 | error ("-mcmodel incompatible with other toc options"); \ |
| 140 | SET_CMODEL (CMODEL_SMALL); \ |
| 141 | } \ |
| 142 | else \ |
| 143 | { \ |
| 144 | if (!global_options_set.x_rs6000_current_cmodel) \ |
| 145 | SET_CMODEL (CMODEL_MEDIUM); \ |
| 146 | if (rs6000_current_cmodel != CMODEL_SMALL) \ |
| 147 | { \ |
| 148 | if (!global_options_set.x_TARGET_NO_FP_IN_TOC) \ |
| 149 | TARGET_NO_FP_IN_TOC \ |
| 150 | = rs6000_current_cmodel == CMODEL_MEDIUM; \ |
| 151 | if (!global_options_set.x_TARGET_NO_SUM_IN_TOC) \ |
| 152 | TARGET_NO_SUM_IN_TOC = 0; \ |
| 153 | } \ |
| 154 | } \ |
| 155 | } \ |
| 156 | else \ |
| 157 | { \ |
| 158 | if (!RS6000_BI_ARCH_P) \ |
| 159 | error (INVALID_32BIT, "32"); \ |
| 160 | if (TARGET_PROFILE_KERNEL) \ |
| 161 | { \ |
| 162 | TARGET_PROFILE_KERNEL = 0; \ |
| 163 | error (INVALID_32BIT, "profile-kernel"); \ |
| 164 | } \ |
| 165 | if (global_options_set.x_rs6000_current_cmodel) \ |
| 166 | { \ |
| 167 | SET_CMODEL (CMODEL_SMALL); \ |
| 168 | error (INVALID_32BIT, "cmodel"); \ |
| 169 | } \ |
| 170 | } \ |
| 171 | } \ |
| 172 | while (0) |
| 173 | |
| 174 | #undef ASM_DEFAULT_SPEC |
| 175 | #undef ASM_SPEC |
| 176 | #undef LINK_OS_LINUX_SPEC |
| 177 | |
| 178 | #ifndef RS6000_BI_ARCH |
| 179 | #define ASM_DEFAULT_SPEC "-mppc64" |
| 180 | #define ASM_SPEC "%(asm_spec64) %(asm_spec_common)" |
| 181 | #define LINK_OS_LINUX_SPEC "%(link_os_linux_spec64)" |
| 182 | #else |
| 183 | #if DEFAULT_ARCH64_P |
| 184 | #define ASM_DEFAULT_SPEC "-mppc%{!m32:64}" |
| 185 | #define ASM_SPEC "%{m32:%(asm_spec32)}%{!m32:%(asm_spec64)} %(asm_spec_common)" |
| 186 | #define LINK_OS_LINUX_SPEC "%{m32:%(link_os_linux_spec32)}%{!m32:%(link_os_linux_spec64)}" |
| 187 | #else |
| 188 | #define ASM_DEFAULT_SPEC "-mppc%{m64:64}" |
| 189 | #define ASM_SPEC "%{!m64:%(asm_spec32)}%{m64:%(asm_spec64)} %(asm_spec_common)" |
| 190 | #define LINK_OS_LINUX_SPEC "%{!m64:%(link_os_linux_spec32)}%{m64:%(link_os_linux_spec64)}" |
| 191 | #endif |
| 192 | #endif |
| 193 | |
| 194 | #define ASM_SPEC32 "-a32 \ |
| 195 | %{mrelocatable} %{mrelocatable-lib} %{fpic|fpie|fPIC|fPIE:-K PIC} \ |
| 196 | %{memb|msdata=eabi: -memb}" |
| 197 | |
| 198 | #define ASM_SPEC64 "-a64" |
| 199 | |
| 200 | #define ASM_SPEC_COMMON "%(asm_cpu) \ |
| 201 | %{,assembler|,assembler-with-cpp: %{mregnames} %{mno-regnames}}" \ |
| 202 | ENDIAN_SELECT(" -mbig", " -mlittle", DEFAULT_ASM_ENDIAN) |
| 203 | |
| 204 | #undef SUBSUBTARGET_EXTRA_SPECS |
| 205 | #define SUBSUBTARGET_EXTRA_SPECS \ |
| 206 | { "asm_spec_common", ASM_SPEC_COMMON }, \ |
| 207 | { "asm_spec32", ASM_SPEC32 }, \ |
| 208 | { "asm_spec64", ASM_SPEC64 }, \ |
| 209 | { "link_os_linux_spec32", LINK_OS_LINUX_SPEC32 }, \ |
| 210 | { "link_os_linux_spec64", LINK_OS_LINUX_SPEC64 }, |
| 211 | |
| 212 | #undef MULTILIB_DEFAULTS |
| 213 | #if DEFAULT_ARCH64_P |
| 214 | #define MULTILIB_DEFAULTS { "m64" } |
| 215 | #else |
| 216 | #define MULTILIB_DEFAULTS { "m32" } |
| 217 | #endif |
| 218 | |
| 219 | #ifndef RS6000_BI_ARCH |
| 220 | |
| 221 | /* 64-bit PowerPC Linux always has a TOC. */ |
| 222 | #undef TARGET_TOC |
| 223 | #define TARGET_TOC 1 |
| 224 | |
| 225 | /* Some things from sysv4.h we don't do when 64 bit. */ |
| 226 | #undef OPTION_RELOCATABLE |
| 227 | #define OPTION_RELOCATABLE 0 |
| 228 | #undef OPTION_EABI |
| 229 | #define OPTION_EABI 0 |
| 230 | #undef OPTION_PROTOTYPE |
| 231 | #define OPTION_PROTOTYPE 0 |
| 232 | #undef RELOCATABLE_NEEDS_FIXUP |
| 233 | #define RELOCATABLE_NEEDS_FIXUP 0 |
| 234 | |
| 235 | #endif |
| 236 | |
| 237 | /* We use glibc _mcount for profiling. */ |
| 238 | #define NO_PROFILE_COUNTERS 1 |
| 239 | #define PROFILE_HOOK(LABEL) \ |
| 240 | do { if (TARGET_64BIT) output_profile_hook (LABEL); } while (0) |
| 241 | |
| 242 | /* PowerPC64 Linux word-aligns FP doubles when -malign-power is given. */ |
| 243 | #undef ADJUST_FIELD_ALIGN |
| 244 | #define ADJUST_FIELD_ALIGN(FIELD, COMPUTED) \ |
| 245 | (rs6000_special_adjust_field_align_p ((FIELD), (COMPUTED)) \ |
| 246 | ? 128 \ |
| 247 | : (TARGET_64BIT \ |
| 248 | && TARGET_ALIGN_NATURAL == 0 \ |
| 249 | && TYPE_MODE (strip_array_types (TREE_TYPE (FIELD))) == DFmode) \ |
| 250 | ? MIN ((COMPUTED), 32) \ |
| 251 | : (COMPUTED)) |
| 252 | |
| 253 | /* PowerPC64 Linux increases natural record alignment to doubleword if |
| 254 | the first field is an FP double, only if in power alignment mode. */ |
| 255 | #undef ROUND_TYPE_ALIGN |
| 256 | #define ROUND_TYPE_ALIGN(STRUCT, COMPUTED, SPECIFIED) \ |
| 257 | ((TARGET_64BIT \ |
| 258 | && (TREE_CODE (STRUCT) == RECORD_TYPE \ |
| 259 | || TREE_CODE (STRUCT) == UNION_TYPE \ |
| 260 | || TREE_CODE (STRUCT) == QUAL_UNION_TYPE) \ |
| 261 | && TARGET_ALIGN_NATURAL == 0) \ |
| 262 | ? rs6000_special_round_type_align (STRUCT, COMPUTED, SPECIFIED) \ |
| 263 | : MAX ((COMPUTED), (SPECIFIED))) |
| 264 | |
| 265 | /* Use the default for compiling target libs. */ |
| 266 | #ifdef IN_TARGET_LIBS |
| 267 | #undef TARGET_ALIGN_NATURAL |
| 268 | #define TARGET_ALIGN_NATURAL 1 |
| 269 | #endif |
| 270 | |
| 271 | /* Indicate that jump tables go in the text section. */ |
| 272 | #undef JUMP_TABLES_IN_TEXT_SECTION |
| 273 | #define JUMP_TABLES_IN_TEXT_SECTION TARGET_64BIT |
| 274 | |
| 275 | /* The linux ppc64 ABI isn't explicit on whether aggregates smaller |
| 276 | than a doubleword should be padded upward or downward. You could |
| 277 | reasonably assume that they follow the normal rules for structure |
| 278 | layout treating the parameter area as any other block of memory, |
| 279 | then map the reg param area to registers. i.e. pad upward. |
| 280 | Setting both of the following defines results in this behavior. |
| 281 | Setting just the first one will result in aggregates that fit in a |
| 282 | doubleword being padded downward, and others being padded upward. |
| 283 | Not a bad idea as this results in struct { int x; } being passed |
| 284 | the same way as an int. */ |
| 285 | #define AGGREGATE_PADDING_FIXED TARGET_64BIT |
| 286 | #define AGGREGATES_PAD_UPWARD_ALWAYS 0 |
| 287 | |
| 288 | /* Specify padding for the last element of a block move between |
| 289 | registers and memory. FIRST is nonzero if this is the only |
| 290 | element. */ |
| 291 | #define BLOCK_REG_PADDING(MODE, TYPE, FIRST) \ |
| 292 | (!(FIRST) ? upward : FUNCTION_ARG_PADDING (MODE, TYPE)) |
| 293 | |
| 294 | /* Linux doesn't support saving and restoring 64-bit regs in a 32-bit |
| 295 | process. */ |
| 296 | #define OS_MISSING_POWERPC64 !TARGET_64BIT |
| 297 | |
| 298 | #ifdef SINGLE_LIBC |
| 299 | #define OPTION_GLIBC (DEFAULT_LIBC == LIBC_GLIBC) |
| 300 | #define OPTION_UCLIBC (DEFAULT_LIBC == LIBC_UCLIBC) |
| 301 | #define OPTION_BIONIC (DEFAULT_LIBC == LIBC_BIONIC) |
| 302 | #else |
| 303 | #define OPTION_GLIBC (linux_libc == LIBC_GLIBC) |
| 304 | #define OPTION_UCLIBC (linux_libc == LIBC_UCLIBC) |
| 305 | #define OPTION_BIONIC (linux_libc == LIBC_BIONIC) |
| 306 | #endif |
| 307 | |
| 308 | /* Determine what functions are present at the runtime; |
| 309 | this includes full c99 runtime and sincos. */ |
| 310 | #undef TARGET_LIBC_HAS_FUNCTION |
| 311 | #define TARGET_LIBC_HAS_FUNCTION linux_libc_has_function |
| 312 | |
| 313 | #undef TARGET_OS_CPP_BUILTINS |
| 314 | #define TARGET_OS_CPP_BUILTINS() \ |
| 315 | do \ |
| 316 | { \ |
| 317 | if (TARGET_64BIT) \ |
| 318 | { \ |
| 319 | builtin_define ("__PPC__"); \ |
| 320 | builtin_define ("__PPC64__"); \ |
| 321 | builtin_define ("__powerpc__"); \ |
| 322 | builtin_define ("__powerpc64__"); \ |
| 323 | if (!DOT_SYMBOLS) \ |
| 324 | builtin_define ("_CALL_LINUX"); \ |
| 325 | builtin_assert ("cpu=powerpc64"); \ |
| 326 | builtin_assert ("machine=powerpc64"); \ |
| 327 | } \ |
| 328 | else \ |
| 329 | { \ |
| 330 | builtin_define_std ("PPC"); \ |
| 331 | builtin_define_std ("powerpc"); \ |
| 332 | builtin_assert ("cpu=powerpc"); \ |
| 333 | builtin_assert ("machine=powerpc"); \ |
| 334 | TARGET_OS_SYSV_CPP_BUILTINS (); \ |
| 335 | } \ |
| 336 | } \ |
| 337 | while (0) |
| 338 | |
| 339 | #undef CPP_OS_DEFAULT_SPEC |
| 340 | #define CPP_OS_DEFAULT_SPEC "%(cpp_os_linux)" |
| 341 | |
| 342 | #undef LINK_SHLIB_SPEC |
| 343 | #define LINK_SHLIB_SPEC "%{shared:-shared} %{!shared: %{static:-static}}" |
| 344 | |
| 345 | #undef LIB_DEFAULT_SPEC |
| 346 | #define LIB_DEFAULT_SPEC "%(lib_linux)" |
| 347 | |
| 348 | #undef STARTFILE_DEFAULT_SPEC |
| 349 | #define STARTFILE_DEFAULT_SPEC "%(startfile_linux)" |
| 350 | |
| 351 | #undef ENDFILE_DEFAULT_SPEC |
| 352 | #define ENDFILE_DEFAULT_SPEC "%(endfile_linux)" |
| 353 | |
| 354 | #undef LINK_START_DEFAULT_SPEC |
| 355 | #define LINK_START_DEFAULT_SPEC "%(link_start_linux)" |
| 356 | |
| 357 | #undef LINK_OS_DEFAULT_SPEC |
| 358 | #define LINK_OS_DEFAULT_SPEC "%(link_os_linux)" |
| 359 | |
| 360 | #define GLIBC_DYNAMIC_LINKER32 "/lib/ld.so.1" |
| 361 | #ifdef LINUX64_DEFAULT_ABI_ELFv2 |
| 362 | #define GLIBC_DYNAMIC_LINKER64 "%{mabi=elfv1:/lib64/ld64.so.1;:/lib64/ld64.so.2}" |
| 363 | #else |
| 364 | #define GLIBC_DYNAMIC_LINKER64 "%{mabi=elfv2:/lib64/ld64.so.2;:/lib64/ld64.so.1}" |
| 365 | #endif |
| 366 | #define UCLIBC_DYNAMIC_LINKER32 "/lib/ld-uClibc.so.0" |
| 367 | #define UCLIBC_DYNAMIC_LINKER64 "/lib/ld64-uClibc.so.0" |
| 368 | #if DEFAULT_LIBC == LIBC_UCLIBC |
| 369 | #define CHOOSE_DYNAMIC_LINKER(G, U) "%{mglibc:" G ";:" U "}" |
| 370 | #elif DEFAULT_LIBC == LIBC_GLIBC |
| 371 | #define CHOOSE_DYNAMIC_LINKER(G, U) "%{muclibc:" U ";:" G "}" |
| 372 | #else |
| 373 | #error "Unsupported DEFAULT_LIBC" |
| 374 | #endif |
| 375 | #define GNU_USER_DYNAMIC_LINKER32 \ |
| 376 | CHOOSE_DYNAMIC_LINKER (GLIBC_DYNAMIC_LINKER32, UCLIBC_DYNAMIC_LINKER32) |
| 377 | #define GNU_USER_DYNAMIC_LINKER64 \ |
| 378 | CHOOSE_DYNAMIC_LINKER (GLIBC_DYNAMIC_LINKER64, UCLIBC_DYNAMIC_LINKER64) |
| 379 | |
| 380 | #undef DEFAULT_ASM_ENDIAN |
| 381 | #if (TARGET_DEFAULT & MASK_LITTLE_ENDIAN) |
| 382 | #define DEFAULT_ASM_ENDIAN " -mlittle" |
| 383 | #define LINK_OS_LINUX_EMUL32 ENDIAN_SELECT(" -m elf32ppclinux", \ |
| 384 | " -m elf32lppclinux", \ |
| 385 | " -m elf32lppclinux") |
| 386 | #define LINK_OS_LINUX_EMUL64 ENDIAN_SELECT(" -m elf64ppc", \ |
| 387 | " -m elf64lppc", \ |
| 388 | " -m elf64lppc") |
| 389 | #else |
| 390 | #define DEFAULT_ASM_ENDIAN " -mbig" |
| 391 | #define LINK_OS_LINUX_EMUL32 ENDIAN_SELECT(" -m elf32ppclinux", \ |
| 392 | " -m elf32lppclinux", \ |
| 393 | " -m elf32ppclinux") |
| 394 | #define LINK_OS_LINUX_EMUL64 ENDIAN_SELECT(" -m elf64ppc", \ |
| 395 | " -m elf64lppc", \ |
| 396 | " -m elf64ppc") |
| 397 | #endif |
| 398 | |
| 399 | #define LINK_OS_LINUX_SPEC32 LINK_OS_LINUX_EMUL32 " %{!shared: %{!static: \ |
| 400 | %{rdynamic:-export-dynamic} \ |
| 401 | -dynamic-linker " GNU_USER_DYNAMIC_LINKER32 "}}" |
| 402 | |
| 403 | #define LINK_OS_LINUX_SPEC64 LINK_OS_LINUX_EMUL64 " %{!shared: %{!static: \ |
| 404 | %{rdynamic:-export-dynamic} \ |
| 405 | -dynamic-linker " GNU_USER_DYNAMIC_LINKER64 "}}" |
| 406 | |
| 407 | #undef TOC_SECTION_ASM_OP |
| 408 | #define TOC_SECTION_ASM_OP \ |
| 409 | (TARGET_64BIT \ |
| 410 | ? "\t.section\t\".toc\",\"aw\"" \ |
| 411 | : "\t.section\t\".got\",\"aw\"") |
| 412 | |
| 413 | #undef MINIMAL_TOC_SECTION_ASM_OP |
| 414 | #define MINIMAL_TOC_SECTION_ASM_OP \ |
| 415 | (TARGET_64BIT \ |
| 416 | ? "\t.section\t\".toc1\",\"aw\"" \ |
| 417 | : ((TARGET_RELOCATABLE || flag_pic) \ |
| 418 | ? "\t.section\t\".got2\",\"aw\"" \ |
| 419 | : "\t.section\t\".got1\",\"aw\"")) |
| 420 | |
| 421 | /* Must be at least as big as our pointer type. */ |
| 422 | #undef SIZE_TYPE |
| 423 | #define SIZE_TYPE (TARGET_64BIT ? "long unsigned int" : "unsigned int") |
| 424 | |
| 425 | #undef PTRDIFF_TYPE |
| 426 | #define PTRDIFF_TYPE (TARGET_64BIT ? "long int" : "int") |
| 427 | |
| 428 | #undef WCHAR_TYPE |
| 429 | #define WCHAR_TYPE (TARGET_64BIT ? "int" : "long int") |
| 430 | #undef WCHAR_TYPE_SIZE |
| 431 | #define WCHAR_TYPE_SIZE 32 |
| 432 | |
| 433 | #undef RS6000_MCOUNT |
| 434 | #define RS6000_MCOUNT "_mcount" |
| 435 | |
| 436 | #ifdef __powerpc64__ |
| 437 | /* _init and _fini functions are built from bits spread across many |
| 438 | object files, each potentially with a different TOC pointer. For |
| 439 | that reason, place a nop after the call so that the linker can |
| 440 | restore the TOC pointer if a TOC adjusting call stub is needed. */ |
| 441 | #if DOT_SYMBOLS |
| 442 | #define CRT_CALL_STATIC_FUNCTION(SECTION_OP, FUNC) \ |
| 443 | asm (SECTION_OP "\n" \ |
| 444 | " bl ." #FUNC "\n" \ |
| 445 | " nop\n" \ |
| 446 | " .previous"); |
| 447 | #else |
| 448 | #define CRT_CALL_STATIC_FUNCTION(SECTION_OP, FUNC) \ |
| 449 | asm (SECTION_OP "\n" \ |
| 450 | " bl " #FUNC "\n" \ |
| 451 | " nop\n" \ |
| 452 | " .previous"); |
| 453 | #endif |
| 454 | #endif |
| 455 | |
| 456 | /* FP save and restore routines. */ |
| 457 | #undef SAVE_FP_PREFIX |
| 458 | #define SAVE_FP_PREFIX (TARGET_64BIT ? "._savef" : "_savefpr_") |
| 459 | #undef SAVE_FP_SUFFIX |
| 460 | #define SAVE_FP_SUFFIX "" |
| 461 | #undef RESTORE_FP_PREFIX |
| 462 | #define RESTORE_FP_PREFIX (TARGET_64BIT ? "._restf" : "_restfpr_") |
| 463 | #undef RESTORE_FP_SUFFIX |
| 464 | #define RESTORE_FP_SUFFIX "" |
| 465 | |
| 466 | /* Dwarf2 debugging. */ |
| 467 | #undef PREFERRED_DEBUGGING_TYPE |
| 468 | #define PREFERRED_DEBUGGING_TYPE DWARF2_DEBUG |
| 469 | |
| 470 | /* This is how to declare the size of a function. */ |
| 471 | #undef ASM_DECLARE_FUNCTION_SIZE |
| 472 | #define ASM_DECLARE_FUNCTION_SIZE(FILE, FNAME, DECL) \ |
| 473 | do \ |
| 474 | { \ |
| 475 | if (!flag_inhibit_size_directive) \ |
| 476 | { \ |
| 477 | fputs ("\t.size\t", (FILE)); \ |
| 478 | if (TARGET_64BIT && DOT_SYMBOLS) \ |
| 479 | putc ('.', (FILE)); \ |
| 480 | assemble_name ((FILE), (FNAME)); \ |
| 481 | fputs (",.-", (FILE)); \ |
| 482 | rs6000_output_function_entry (FILE, FNAME); \ |
| 483 | putc ('\n', (FILE)); \ |
| 484 | } \ |
| 485 | } \ |
| 486 | while (0) |
| 487 | |
| 488 | /* Return nonzero if this entry is to be written into the constant |
| 489 | pool in a special way. We do so if this is a SYMBOL_REF, LABEL_REF |
| 490 | or a CONST containing one of them. If -mfp-in-toc (the default), |
| 491 | we also do this for floating-point constants. We actually can only |
| 492 | do this if the FP formats of the target and host machines are the |
| 493 | same, but we can't check that since not every file that uses |
| 494 | the macros includes real.h. We also do this when we can write the |
| 495 | entry into the TOC and the entry is not larger than a TOC entry. */ |
| 496 | |
| 497 | #undef ASM_OUTPUT_SPECIAL_POOL_ENTRY_P |
| 498 | #define ASM_OUTPUT_SPECIAL_POOL_ENTRY_P(X, MODE) \ |
| 499 | (TARGET_TOC \ |
| 500 | && (GET_CODE (X) == SYMBOL_REF \ |
| 501 | || (GET_CODE (X) == CONST && GET_CODE (XEXP (X, 0)) == PLUS \ |
| 502 | && GET_CODE (XEXP (XEXP (X, 0), 0)) == SYMBOL_REF) \ |
| 503 | || GET_CODE (X) == LABEL_REF \ |
| 504 | || (GET_CODE (X) == CONST_INT \ |
| 505 | && GET_MODE_BITSIZE (MODE) <= GET_MODE_BITSIZE (Pmode)) \ |
| 506 | || (GET_CODE (X) == CONST_DOUBLE \ |
| 507 | && ((TARGET_64BIT \ |
| 508 | && (TARGET_MINIMAL_TOC \ |
| 509 | || (SCALAR_FLOAT_MODE_P (GET_MODE (X)) \ |
| 510 | && ! TARGET_NO_FP_IN_TOC))) \ |
| 511 | || (!TARGET_64BIT \ |
| 512 | && !TARGET_NO_FP_IN_TOC \ |
| 513 | && !TARGET_RELOCATABLE \ |
| 514 | && SCALAR_FLOAT_MODE_P (GET_MODE (X)) \ |
| 515 | && BITS_PER_WORD == HOST_BITS_PER_INT))))) |
| 516 | |
| 517 | /* Select a format to encode pointers in exception handling data. CODE |
| 518 | is 0 for data, 1 for code labels, 2 for function pointers. GLOBAL is |
| 519 | true if the symbol may be affected by dynamic relocations. */ |
| 520 | #undef ASM_PREFERRED_EH_DATA_FORMAT |
| 521 | #define ASM_PREFERRED_EH_DATA_FORMAT(CODE, GLOBAL) \ |
| 522 | ((TARGET_64BIT || flag_pic || TARGET_RELOCATABLE) \ |
| 523 | ? (((GLOBAL) ? DW_EH_PE_indirect : 0) | DW_EH_PE_pcrel \ |
| 524 | | (TARGET_64BIT ? DW_EH_PE_udata8 : DW_EH_PE_sdata4)) \ |
| 525 | : DW_EH_PE_absptr) |
| 526 | |
| 527 | /* For backward compatibility, we must continue to use the AIX |
| 528 | structure return convention. */ |
| 529 | #undef DRAFT_V4_STRUCT_RET |
| 530 | #define DRAFT_V4_STRUCT_RET (!TARGET_64BIT) |
| 531 | |
| 532 | #ifdef TARGET_LIBC_PROVIDES_SSP |
| 533 | /* ppc32 glibc provides __stack_chk_guard in -0x7008(2), |
| 534 | ppc64 glibc provides it at -0x7010(13). */ |
| 535 | #define TARGET_THREAD_SSP_OFFSET (TARGET_64BIT ? -0x7010 : -0x7008) |
| 536 | #endif |
| 537 | |
| 538 | #define POWERPC_LINUX |
| 539 | |
| 540 | /* ppc{32,64} linux has 128-bit long double support in glibc 2.4 and later. */ |
| 541 | #ifdef TARGET_DEFAULT_LONG_DOUBLE_128 |
| 542 | #define RS6000_DEFAULT_LONG_DOUBLE_SIZE 128 |
| 543 | #endif |
| 544 | |
| 545 | /* Static stack checking is supported by means of probes. */ |
| 546 | #define STACK_CHECK_STATIC_BUILTIN 1 |
| 547 | |
| 548 | /* The default value isn't sufficient in 64-bit mode. */ |
| 549 | #define STACK_CHECK_PROTECT (TARGET_64BIT ? 16 * 1024 : 12 * 1024) |
| 550 | |
| 551 | /* Software floating point support for exceptions and rounding modes |
| 552 | depends on the C library in use. */ |
| 553 | #undef TARGET_FLOAT_EXCEPTIONS_ROUNDING_SUPPORTED_P |
| 554 | #define TARGET_FLOAT_EXCEPTIONS_ROUNDING_SUPPORTED_P \ |
| 555 | rs6000_linux_float_exceptions_rounding_supported_p |
| 556 | |
| 557 | /* Support for TARGET_ATOMIC_ASSIGN_EXPAND_FENV without FPRs depends |
| 558 | on glibc 2.19 or greater. */ |
| 559 | #if TARGET_GLIBC_MAJOR > 2 \ |
| 560 | || (TARGET_GLIBC_MAJOR == 2 && TARGET_GLIBC_MINOR >= 19) |
| 561 | #define RS6000_GLIBC_ATOMIC_FENV 1 |
| 562 | #endif |