diff options
Diffstat (limited to 'contrib/gcc/config/rs6000/aix.h')
| -rw-r--r-- | contrib/gcc/config/rs6000/aix.h | 134 |
1 files changed, 84 insertions, 50 deletions
diff --git a/contrib/gcc/config/rs6000/aix.h b/contrib/gcc/config/rs6000/aix.h index 505d758..f189407 100644 --- a/contrib/gcc/config/rs6000/aix.h +++ b/contrib/gcc/config/rs6000/aix.h @@ -1,23 +1,23 @@ /* Definitions of target machine for GNU compiler, for IBM RS/6000 POWER running AIX. - Copyright (C) 2000, 2001, 2002 Free Software Foundation, Inc. + Copyright (C) 2000, 2001, 2002, 2003, 2004 Free Software Foundation, Inc. -This file is part of GNU CC. + This file is part of GCC. -GNU CC is free software; you can redistribute it and/or modify -it under the terms of the GNU General Public License as published by -the Free Software Foundation; either version 2, or (at your option) -any later version. + GCC is free software; you can redistribute it and/or modify it + under the terms of the GNU General Public License as published + by the Free Software Foundation; either version 2, or (at your + option) any later version. -GNU CC is distributed in the hope that it will be useful, -but WITHOUT ANY WARRANTY; without even the implied warranty of -MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the -GNU General Public License for more details. + GCC is distributed in the hope that it will be useful, but WITHOUT + ANY WARRANTY; without even the implied warranty of MERCHANTABILITY + or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public + License for more details. -You should have received a copy of the GNU General Public License -along with GNU CC; see the file COPYING. If not, write to -the Free Software Foundation, 59 Temple Place - Suite 330, -Boston, MA 02111-1307, USA. */ + You should have received a copy of the GNU General Public License + along with GCC; see the file COPYING. If not, write to the + Free Software Foundation, 59 Temple Place - Suite 330, Boston, + MA 02111-1307, USA. */ /* Yes! We are AIX! */ #define DEFAULT_ABI ABI_AIX @@ -87,8 +87,8 @@ Boston, MA 02111-1307, USA. */ Don't do this until the fixed IBM assembler is more generally available. When this becomes permanently defined, the ASM_OUTPUT_EXTERNAL, ASM_OUTPUT_EXTERNAL_LIBCALL, and RS6000_OUTPUT_BASENAME macros will no - longer be needed. Also, the extern declaration of mcount in ASM_FILE_START - will no longer be needed. */ + longer be needed. Also, the extern declaration of mcount in + rs6000_xcoff_file_start will no longer be needed. */ /* #define ASM_SPEC "-u %(asm_cpu)" */ @@ -128,24 +128,48 @@ Boston, MA 02111-1307, USA. */ #define LIB_SPEC "%{pg:-L/lib/profiled -L/usr/lib/profiled}\ %{p:-L/lib/profiled -L/usr/lib/profiled} %{!shared:%{g*:-lg}} -lc" +/* This now supports a natural alignment mode. */ /* AIX word-aligns FP doubles but doubleword-aligns 64-bit ints. */ #define ADJUST_FIELD_ALIGN(FIELD, COMPUTED) \ + (TARGET_ALIGN_NATURAL ? (COMPUTED) : \ (TYPE_MODE (TREE_CODE (TREE_TYPE (FIELD)) == ARRAY_TYPE \ ? get_inner_array_type (FIELD) \ : TREE_TYPE (FIELD)) == DFmode \ - ? MIN ((COMPUTED), 32) : (COMPUTED)) + ? MIN ((COMPUTED), 32) : (COMPUTED))) /* AIX increases natural record alignment to doubleword if the first field is an FP double while the FP fields remain word aligned. */ -#define ROUND_TYPE_ALIGN(STRUCT, COMPUTED, SPECIFIED) \ - ((TREE_CODE (STRUCT) == RECORD_TYPE \ - || TREE_CODE (STRUCT) == UNION_TYPE \ - || TREE_CODE (STRUCT) == QUAL_UNION_TYPE) \ - && TYPE_FIELDS (STRUCT) != 0 \ - && DECL_MODE (TYPE_FIELDS (STRUCT)) == DFmode \ - ? MAX (MAX ((COMPUTED), (SPECIFIED)), 64) \ +#define ROUND_TYPE_ALIGN(STRUCT, COMPUTED, SPECIFIED) \ + ((TREE_CODE (STRUCT) == RECORD_TYPE \ + || TREE_CODE (STRUCT) == UNION_TYPE \ + || TREE_CODE (STRUCT) == QUAL_UNION_TYPE) \ + && TARGET_ALIGN_NATURAL == 0 \ + ? rs6000_special_round_type_align (STRUCT, COMPUTED, SPECIFIED) \ : MAX ((COMPUTED), (SPECIFIED))) +/* The AIX ABI isn't explicit on whether aggregates smaller than a + word/doubleword should be padded upward or downward. One could + reasonably assume that they follow the normal rules for structure + layout treating the parameter area as any other block of memory, + then map the reg param area to registers, i.e., pad upward, which + is the way IBM Compilers for AIX behave. + Setting both of the following defines results in this behavior. */ +#define AGGREGATE_PADDING_FIXED 1 +#define AGGREGATES_PAD_UPWARD_ALWAYS 1 + +/* We don't want anything in the reg parm area being passed on the + stack. */ +#define MUST_PASS_IN_STACK(MODE, TYPE) \ + ((TYPE) != 0 \ + && (TREE_CODE (TYPE_SIZE (TYPE)) != INTEGER_CST \ + || TREE_ADDRESSABLE (TYPE))) + +/* Specify padding for the last element of a block move between + registers and memory. FIRST is nonzero if this is the only + element. */ +#define BLOCK_REG_PADDING(MODE, TYPE, FIRST) \ + (!(FIRST) ? upward : FUNCTION_ARG_PADDING (MODE, TYPE)) + /* Indicate that jump tables go in the text section. */ #define JUMP_TABLES_IN_TEXT_SECTION 1 @@ -172,41 +196,51 @@ Boston, MA 02111-1307, USA. */ /* Define cutoff for using external functions to save floating point. */ #define FP_SAVE_INLINE(FIRST_REG) ((FIRST_REG) == 62 || (FIRST_REG) == 63) -/* Optabs entries for the int->float routines and quad FP operations - using the standard AIX names. */ -#define ADDTF3_LIBCALL "_xlqadd" -#define DIVTF3_LIBCALL "_xlqdiv" -#define MULTF3_LIBCALL "_xlqmul" -#define SUBTF3_LIBCALL "_xlqsub" +/* __throw will restore its own return address to be the same as the + return address of the function that the throw is being made to. + This is unfortunate, because we want to check the original + return address to see if we need to restore the TOC. + So we have to squirrel it away with this. */ +#define SETUP_FRAME_ADDRESSES() rs6000_aix_emit_builtin_unwind_init () + +/* If the current unwind info (FS) does not contain explicit info + saving R2, then we have to do a minor amount of code reading to + figure out if it was saved. The big problem here is that the + code that does the save/restore is generated by the linker, so + we have no good way to determine at compile time what to do. */ -#define INIT_TARGET_OPTABS \ +#ifdef __powerpc64__ +#define MD_FROB_UPDATE_CONTEXT(CTX, FS) \ do { \ - if (! TARGET_POWER2 && ! TARGET_POWERPC && TARGET_HARD_FLOAT) \ + if ((FS)->regs.reg[2].how == REG_UNSAVED) \ { \ - fixdfsi_libfunc = init_one_libfunc (RS6000_ITRUNC); \ - fixunsdfsi_libfunc = init_one_libfunc (RS6000_UITRUNC); \ + unsigned int *insn \ + = (unsigned int *) \ + _Unwind_GetGR ((CTX), LINK_REGISTER_REGNUM); \ + if (*insn == 0xE8410028) \ + _Unwind_SetGRPtr ((CTX), 2, (CTX)->cfa + 40); \ } \ - if (TARGET_HARD_FLOAT) \ + } while (0) +#else +#define MD_FROB_UPDATE_CONTEXT(CTX, FS) \ + do { \ + if ((FS)->regs.reg[2].how == REG_UNSAVED) \ { \ - add_optab->handlers[(int) TFmode].libfunc \ - = init_one_libfunc (ADDTF3_LIBCALL); \ - sub_optab->handlers[(int) TFmode].libfunc \ - = init_one_libfunc (SUBTF3_LIBCALL); \ - smul_optab->handlers[(int) TFmode].libfunc \ - = init_one_libfunc (MULTF3_LIBCALL); \ - sdiv_optab->handlers[(int) TFmode].libfunc \ - = init_one_libfunc (DIVTF3_LIBCALL); \ + unsigned int *insn \ + = (unsigned int *) \ + _Unwind_GetGR ((CTX), LINK_REGISTER_REGNUM); \ + if (*insn == 0x80410014) \ + _Unwind_SetGRPtr ((CTX), 2, (CTX)->cfa + 20); \ } \ } while (0) - -/* __throw will restore its own return address to be the same as the - return address of the function that the throw is being made to. - This is unfortunate, because we want to check the original - return address to see if we need to restore the TOC. - So we have to squirrel it away with this. */ -#define SETUP_FRAME_ADDRESSES() rs6000_aix_emit_builtin_unwind_init () +#endif #define PROFILE_HOOK(LABEL) output_profile_hook (LABEL) /* Print subsidiary information on the compiler version in use. */ #define TARGET_VERSION ; + +/* No version of AIX fully supports AltiVec or 64-bit instructions in + 32-bit mode. */ +#define OS_MISSING_POWERPC64 1 +#define OS_MISSING_ALTIVEC 1 |
