Mercurial > hg > CbC > CbC_gcc
annotate gcc/config/rs6000/aix.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 IBM RS/6000 POWER running AIX. | |
|
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3 Copyright (C) 2000, 2001, 2002, 2003, 2004, 2005, 2006, 2007, 2008, 2010 |
| 0 | 4 Free Software Foundation, Inc. |
| 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 You should have received a copy of the GNU General Public License | |
| 19 along with GCC; see the file COPYING3. If not see | |
| 20 <http://www.gnu.org/licenses/>. */ | |
| 21 | |
| 22 /* Yes! We are AIX! */ | |
| 23 #define DEFAULT_ABI ABI_AIX | |
| 24 #undef TARGET_AIX | |
| 25 #define TARGET_AIX 1 | |
| 26 | |
|
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27 /* Linux64.h wants to redefine TARGET_AIX based on -m64, but it can't be used |
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28 in the #if conditional in options-default.h, so provide another macro. */ |
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29 #undef TARGET_AIX_OS |
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30 #define TARGET_AIX_OS 1 |
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31 |
| 0 | 32 /* AIX always has a TOC. */ |
| 33 #define TARGET_NO_TOC 0 | |
| 34 #define TARGET_TOC 1 | |
| 35 #define FIXED_R2 1 | |
| 36 | |
| 37 /* AIX allows r13 to be used in 32-bit mode. */ | |
| 38 #define FIXED_R13 0 | |
| 39 | |
| 40 /* 32-bit and 64-bit AIX stack boundary is 128. */ | |
| 41 #undef STACK_BOUNDARY | |
| 42 #define STACK_BOUNDARY 128 | |
| 43 | |
| 44 #undef TARGET_IEEEQUAD | |
| 45 #define TARGET_IEEEQUAD 0 | |
| 46 | |
| 47 /* The AIX linker will discard static constructors in object files before | |
| 48 collect has a chance to see them, so scan the object files directly. */ | |
| 49 #define COLLECT_EXPORT_LIST | |
| 50 | |
|
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51 #if HAVE_AS_REF |
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52 /* Issue assembly directives that create a reference to the given DWARF table |
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53 identifier label from the current function section. This is defined to |
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54 ensure we drag frame frame tables associated with needed function bodies in |
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55 a link with garbage collection activated. */ |
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56 #define ASM_OUTPUT_DWARF_TABLE_REF rs6000_aix_asm_output_dwarf_table_ref |
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57 #endif |
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58 |
| 0 | 59 /* This is the only version of nm that collect2 can work with. */ |
| 60 #define REAL_NM_FILE_NAME "/usr/ucb/nm" | |
| 61 | |
| 62 #define USER_LABEL_PREFIX "" | |
| 63 | |
| 64 /* Don't turn -B into -L if the argument specifies a relative file name. */ | |
| 65 #define RELATIVE_PREFIX_NOT_LINKDIR | |
| 66 | |
| 67 /* Because of the above, we must have gcc search itself to find libgcc.a. */ | |
| 68 #define LINK_LIBGCC_SPECIAL_1 | |
| 69 | |
| 70 #define MFWRAP_SPEC " %{static: %{fmudflap|fmudflapth: \ | |
| 71 -brename:malloc,__wrap_malloc -brename:__real_malloc,malloc \ | |
| 72 -brename:free,__wrap_free -brename:__real_free,free \ | |
| 73 -brename:calloc,__wrap_calloc -brename:__real_calloc,calloc \ | |
| 74 -brename:realloc,__wrap_realloc -brename:__real_realloc,realloc \ | |
| 75 -brename:mmap,__wrap_mmap -brename:__real_mmap,mmap \ | |
| 76 -brename:munmap,__wrap_munmap -brename:__real_munmap,munmap \ | |
| 77 -brename:alloca,__wrap_alloca -brename:__real_alloca,alloca \ | |
| 78 } %{fmudflapth: \ | |
| 79 -brename:pthread_create,__wrap_pthread_create \ | |
| 80 -brename:__real_pthread_create,pthread_create \ | |
| 81 -brename:pthread_join,__wrap_pthread_join \ | |
| 82 -brename:__real_pthread_join,pthread_join \ | |
| 83 -brename:pthread_exit,__wrap_pthread_exit \ | |
| 84 -brename:__real_pthread_exit,pthread_exit \ | |
| 85 }} %{fmudflap|fmudflapth: \ | |
| 86 -brename:main,__wrap_main -brename:__real_main,main \ | |
| 87 }" | |
| 88 | |
| 89 #define MFLIB_SPEC " %{fmudflap: -lmudflap \ | |
| 90 %{static:%(link_gcc_c_sequence) -lmudflap}} \ | |
| 91 %{fmudflapth: -lmudflapth -lpthread \ | |
| 92 %{static:%(link_gcc_c_sequence) -lmudflapth}} " | |
| 93 | |
| 94 /* Names to predefine in the preprocessor for this target machine. */ | |
| 95 #define TARGET_OS_AIX_CPP_BUILTINS() \ | |
| 96 do \ | |
| 97 { \ | |
| 98 builtin_define ("_IBMR2"); \ | |
| 99 builtin_define ("_POWER"); \ | |
| 100 builtin_define ("_AIX"); \ | |
| 101 builtin_define ("_AIX32"); \ | |
| 102 builtin_define ("_AIX41"); \ | |
| 103 builtin_define ("_LONG_LONG"); \ | |
| 104 if (TARGET_LONG_DOUBLE_128) \ | |
| 105 builtin_define ("__LONGDOUBLE128"); \ | |
| 106 builtin_assert ("system=unix"); \ | |
| 107 builtin_assert ("system=aix"); \ | |
| 108 } \ | |
| 109 while (0) | |
| 110 | |
| 111 /* Define appropriate architecture macros for preprocessor depending on | |
| 112 target switches. */ | |
| 113 | |
| 114 #define CPP_SPEC "%{posix: -D_POSIX_SOURCE}\ | |
| 115 %{ansi: -D_ANSI_C_SOURCE}" | |
| 116 | |
| 117 #define CC1_SPEC "%(cc1_cpu)" | |
| 118 | |
| 119 #undef ASM_DEFAULT_SPEC | |
| 120 #define ASM_DEFAULT_SPEC "" | |
| 121 | |
| 122 /* Tell the assembler to assume that all undefined names are external. | |
| 123 | |
| 124 Don't do this until the fixed IBM assembler is more generally available. | |
| 125 When this becomes permanently defined, the ASM_OUTPUT_EXTERNAL, | |
| 126 ASM_OUTPUT_EXTERNAL_LIBCALL, and RS6000_OUTPUT_BASENAME macros will no | |
| 127 longer be needed. Also, the extern declaration of mcount in | |
| 128 rs6000_xcoff_file_start will no longer be needed. */ | |
| 129 | |
| 130 /* #define ASM_SPEC "-u %(asm_cpu)" */ | |
| 131 | |
| 132 /* Default location of syscalls.exp under AIX */ | |
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133 #define LINK_SYSCALLS_SPEC "-bI:%R/lib/syscalls.exp" |
| 0 | 134 |
| 135 /* Default location of libg.exp under AIX */ | |
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136 #define LINK_LIBG_SPEC "-bexport:%R/usr/lib/libg.exp" |
| 0 | 137 |
| 138 /* Define the options for the binder: Start text at 512, align all segments | |
| 139 to 512 bytes, and warn if there is text relocation. | |
| 140 | |
| 141 The -bhalt:4 option supposedly changes the level at which ld will abort, | |
| 142 but it also suppresses warnings about multiply defined symbols and is | |
| 143 used by the AIX cc command. So we use it here. | |
| 144 | |
| 145 -bnodelcsect undoes a poor choice of default relating to multiply-defined | |
| 146 csects. See AIX documentation for more information about this. | |
| 147 | |
| 148 -bM:SRE tells the linker that the output file is Shared REusable. Note | |
| 149 that to actually build a shared library you will also need to specify an | |
| 150 export list with the -Wl,-bE option. */ | |
| 151 | |
| 152 #define LINK_SPEC "-T512 -H512 %{!r:-btextro} -bhalt:4 -bnodelcsect\ | |
| 153 %{static:-bnso %(link_syscalls) } \ | |
| 154 %{!shared:%{g*: %(link_libg) }} %{shared:-bM:SRE}" | |
| 155 | |
| 156 /* Profiled library versions are used by linking with special directories. */ | |
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157 #define LIB_SPEC "%{pg:-L%R/lib/profiled -L%R/usr/lib/profiled}\ |
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158 %{p:-L%R/lib/profiled -L%R/usr/lib/profiled} %{!shared:%{g*:-lg}} -lc" |
| 0 | 159 |
| 160 /* Static linking with shared libstdc++ requires libsupc++ as well. */ | |
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161 #define LIBSTDCXX_STATIC "supc++" |
| 0 | 162 |
| 163 /* This now supports a natural alignment mode. */ | |
| 164 /* AIX word-aligns FP doubles but doubleword-aligns 64-bit ints. */ | |
| 165 #define ADJUST_FIELD_ALIGN(FIELD, COMPUTED) \ | |
| 166 ((TARGET_ALIGN_NATURAL == 0 \ | |
| 167 && TYPE_MODE (strip_array_types (TREE_TYPE (FIELD))) == DFmode) \ | |
| 168 ? MIN ((COMPUTED), 32) \ | |
| 169 : (COMPUTED)) | |
| 170 | |
| 171 /* AIX increases natural record alignment to doubleword if the first | |
| 172 field is an FP double while the FP fields remain word aligned. */ | |
| 173 #define ROUND_TYPE_ALIGN(STRUCT, COMPUTED, SPECIFIED) \ | |
| 174 ((TREE_CODE (STRUCT) == RECORD_TYPE \ | |
| 175 || TREE_CODE (STRUCT) == UNION_TYPE \ | |
| 176 || TREE_CODE (STRUCT) == QUAL_UNION_TYPE) \ | |
| 177 && TARGET_ALIGN_NATURAL == 0 \ | |
| 178 ? rs6000_special_round_type_align (STRUCT, COMPUTED, SPECIFIED) \ | |
| 179 : MAX ((COMPUTED), (SPECIFIED))) | |
| 180 | |
| 181 /* The AIX ABI isn't explicit on whether aggregates smaller than a | |
| 182 word/doubleword should be padded upward or downward. One could | |
| 183 reasonably assume that they follow the normal rules for structure | |
| 184 layout treating the parameter area as any other block of memory, | |
| 185 then map the reg param area to registers, i.e., pad upward, which | |
| 186 is the way IBM Compilers for AIX behave. | |
| 187 Setting both of the following defines results in this behavior. */ | |
| 188 #define AGGREGATE_PADDING_FIXED 1 | |
| 189 #define AGGREGATES_PAD_UPWARD_ALWAYS 1 | |
| 190 | |
| 191 /* Specify padding for the last element of a block move between | |
| 192 registers and memory. FIRST is nonzero if this is the only | |
| 193 element. */ | |
| 194 #define BLOCK_REG_PADDING(MODE, TYPE, FIRST) \ | |
| 195 (!(FIRST) ? upward : FUNCTION_ARG_PADDING (MODE, TYPE)) | |
| 196 | |
| 197 /* Indicate that jump tables go in the text section. */ | |
| 198 | |
| 199 #define JUMP_TABLES_IN_TEXT_SECTION 1 | |
| 200 | |
| 201 /* Define any extra SPECS that the compiler needs to generate. */ | |
| 202 #undef SUBTARGET_EXTRA_SPECS | |
| 203 #define SUBTARGET_EXTRA_SPECS \ | |
| 204 { "link_syscalls", LINK_SYSCALLS_SPEC }, \ | |
| 205 { "link_libg", LINK_LIBG_SPEC } | |
| 206 | |
| 207 /* Define cutoff for using external functions to save floating point. */ | |
| 208 #define FP_SAVE_INLINE(FIRST_REG) ((FIRST_REG) == 62 || (FIRST_REG) == 63) | |
| 209 /* And similarly for general purpose registers. */ | |
| 210 #define GP_SAVE_INLINE(FIRST_REG) ((FIRST_REG) < 32) | |
| 211 | |
| 212 /* If the current unwind info (FS) does not contain explicit info | |
| 213 saving R2, then we have to do a minor amount of code reading to | |
| 214 figure out if it was saved. The big problem here is that the | |
| 215 code that does the save/restore is generated by the linker, so | |
| 216 we have no good way to determine at compile time what to do. */ | |
| 217 | |
| 218 #define R_LR 65 | |
| 219 | |
| 220 #ifdef __64BIT__ | |
| 221 #define MD_FROB_UPDATE_CONTEXT(CTX, FS) \ | |
| 222 do { \ | |
| 223 if ((FS)->regs.reg[2].how == REG_UNSAVED) \ | |
| 224 { \ | |
| 225 unsigned int *insn \ | |
| 226 = (unsigned int *) \ | |
| 227 _Unwind_GetGR ((CTX), R_LR); \ | |
| 228 if (*insn == 0xE8410028) \ | |
| 229 _Unwind_SetGRPtr ((CTX), 2, (CTX)->cfa + 40); \ | |
| 230 } \ | |
| 231 } while (0) | |
| 232 #else | |
| 233 #define MD_FROB_UPDATE_CONTEXT(CTX, FS) \ | |
| 234 do { \ | |
| 235 if ((FS)->regs.reg[2].how == REG_UNSAVED) \ | |
| 236 { \ | |
| 237 unsigned int *insn \ | |
| 238 = (unsigned int *) \ | |
| 239 _Unwind_GetGR ((CTX), R_LR); \ | |
| 240 if (*insn == 0x80410014) \ | |
| 241 _Unwind_SetGRPtr ((CTX), 2, (CTX)->cfa + 20); \ | |
| 242 } \ | |
| 243 } while (0) | |
| 244 #endif | |
| 245 | |
| 246 #define PROFILE_HOOK(LABEL) output_profile_hook (LABEL) | |
| 247 | |
| 248 /* Print subsidiary information on the compiler version in use. */ | |
| 249 #define TARGET_VERSION ; | |
| 250 | |
| 251 /* No version of AIX fully supports AltiVec or 64-bit instructions in | |
| 252 32-bit mode. */ | |
| 253 #define OS_MISSING_POWERPC64 1 | |
| 254 #define OS_MISSING_ALTIVEC 1 | |
| 255 | |
| 256 /* WINT_TYPE */ | |
| 257 #define WINT_TYPE "int" | |
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258 |
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259 /* Static stack checking is supported by means of probes. */ |
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260 #define STACK_CHECK_STATIC_BUILTIN 1 |