| /* Definitions of target machine for GNU compiler, |
| for IBM RS/6000 POWER running AIX. |
| Copyright (C) 2000, 2001, 2002 Free Software Foundation, Inc. |
| |
| This file is part of GNU CC. |
| |
| 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. |
| |
| 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. |
| |
| 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. */ |
| |
| /* Yes! We are AIX! */ |
| #define DEFAULT_ABI ABI_AIX |
| #undef TARGET_AIX |
| #define TARGET_AIX 1 |
| /* The AIX linker will discard static constructors in object files before |
| collect has a chance to see them, so scan the object files directly. */ |
| #define COLLECT_EXPORT_LIST |
| |
| /* Handle #pragma weak and #pragma pack. */ |
| #define HANDLE_SYSV_PRAGMA |
| |
| /* This is the only version of nm that collect2 can work with. */ |
| #define REAL_NM_FILE_NAME "/usr/ucb/nm" |
| |
| #define USER_LABEL_PREFIX "" |
| /* Don't turn -B into -L if the argument specifies a relative file name. */ |
| #define RELATIVE_PREFIX_NOT_LINKDIR |
| |
| /* Because of the above, we must have gcc search itself to find libgcc.a. */ |
| #define LINK_LIBGCC_SPECIAL_1 |
| |
| /* Names to predefine in the preprocessor for this target machine. */ |
| #define CPP_PREDEFINES "-D_IBMR2 -D_POWER -D_AIX -D_AIX32 -D_LONG_LONG \ |
| -Asystem=unix -Asystem=aix -Acpu=rs6000 -Amachine=rs6000" |
| |
| /* Define appropriate architecture macros for preprocessor depending on |
| target switches. */ |
| |
| #define CPP_SPEC "%{posix: -D_POSIX_SOURCE}\ |
| %{ansi: -D_ANSI_C_SOURCE}\ |
| %(cpp_cpu)" |
| |
| #undef CPP_DEFAULT_SPEC |
| #define CPP_DEFAULT_SPEC "-D_ARCH_PWR" |
| |
| #undef ASM_DEFAULT_SPEC |
| #define ASM_DEFAULT_SPEC "" |
| |
| /* Tell the assembler to assume that all undefined names are external. |
| |
| 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. */ |
| |
| /* #define ASM_SPEC "-u %(asm_cpu)" */ |
| |
| /* Default location of syscalls.exp under AIX */ |
| #ifndef CROSS_COMPILE |
| #define LINK_SYSCALLS_SPEC "-bI:/lib/syscalls.exp" |
| #else |
| #define LINK_SYSCALLS_SPEC "" |
| #endif |
| |
| /* Default location of libg.exp under AIX */ |
| #ifndef CROSS_COMPILE |
| #define LINK_LIBG_SPEC "-bexport:/usr/lib/libg.exp" |
| #else |
| #define LINK_LIBG_SPEC "" |
| #endif |
| |
| /* Define the options for the binder: Start text at 512, align all segments |
| to 512 bytes, and warn if there is text relocation. |
| |
| The -bhalt:4 option supposedly changes the level at which ld will abort, |
| but it also suppresses warnings about multiply defined symbols and is |
| used by the AIX cc command. So we use it here. |
| |
| -bnodelcsect undoes a poor choice of default relating to multiply-defined |
| csects. See AIX documentation for more information about this. |
| |
| -bM:SRE tells the linker that the output file is Shared REusable. Note |
| that to actually build a shared library you will also need to specify an |
| export list with the -Wl,-bE option. */ |
| |
| #define LINK_SPEC "-T512 -H512 %{!r:-btextro} -bhalt:4 -bnodelcsect\ |
| %{static:-bnso %(link_syscalls) } \ |
| %{!shared:%{g*: %(link_libg) }} %{shared:-bM:SRE}" |
| |
| /* Profiled library versions are used by linking with special directories. */ |
| #define LIB_SPEC "%{pg:-L/lib/profiled -L/usr/lib/profiled}\ |
| %{p:-L/lib/profiled -L/usr/lib/profiled} %{!shared:%{g*:-lg}} -lc" |
| |
| /* AIX word-aligns FP doubles but doubleword-aligns 64-bit ints. */ |
| #define ADJUST_FIELD_ALIGN(FIELD, COMPUTED) \ |
| (TYPE_MODE (TREE_CODE (TREE_TYPE (FIELD)) == ARRAY_TYPE \ |
| ? get_inner_array_type (FIELD) \ |
| : TREE_TYPE (FIELD)) == DFmode \ |
| ? 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) \ |
| : MAX ((COMPUTED), (SPECIFIED))) |
| |
| |
| |
| /* Indicate that jump tables go in the text section. */ |
| |
| #define JUMP_TABLES_IN_TEXT_SECTION 1 |
| |
| /* Enable AIX XL compiler calling convention breakage compatibility. */ |
| #undef TARGET_XL_CALL |
| #define MASK_XL_CALL 0x40000000 |
| #define TARGET_XL_CALL (target_flags & MASK_XL_CALL) |
| #undef SUBTARGET_SWITCHES |
| #define SUBTARGET_SWITCHES \ |
| {"xl-call", MASK_XL_CALL, \ |
| N_("Always pass floating-point arguments in memory") }, \ |
| {"no-xl-call", - MASK_XL_CALL, \ |
| N_("Don't always pass floating-point arguments in memory") }, \ |
| SUBSUBTARGET_SWITCHES |
| #define SUBSUBTARGET_SWITCHES |
| |
| /* Define any extra SPECS that the compiler needs to generate. */ |
| #undef SUBTARGET_EXTRA_SPECS |
| #define SUBTARGET_EXTRA_SPECS \ |
| { "link_syscalls", LINK_SYSCALLS_SPEC }, \ |
| { "link_libg", LINK_LIBG_SPEC } |
| |
| /* 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" |
| |
| #define INIT_TARGET_OPTABS \ |
| do { \ |
| if (! TARGET_POWER2 && ! TARGET_POWERPC && TARGET_HARD_FLOAT) \ |
| { \ |
| fixdfsi_libfunc = init_one_libfunc (RS6000_ITRUNC); \ |
| fixunsdfsi_libfunc = init_one_libfunc (RS6000_UITRUNC); \ |
| } \ |
| if (TARGET_HARD_FLOAT) \ |
| { \ |
| 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); \ |
| } \ |
| } while (0) |
| |
| /* AIX always has a TOC. */ |
| #define TARGET_NO_TOC 0 |
| #define TARGET_TOC 1 |
| |
| #define FIXED_R2 1 |
| /* AIX allows r13 to be used. */ |
| #define FIXED_R13 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 () |
| |
| #define PROFILE_HOOK(LABEL) output_profile_hook (LABEL) |
| |
| /* Print subsidiary information on the compiler version in use. */ |
| #define TARGET_VERSION ; |
