1169689Skan/* Definitions of target machine for GNU compiler. Generic IRIX version. 2169689Skan Copyright (C) 1993, 1995, 1996, 1998, 2000, 3169689Skan 2001, 2002, 2003, 2004 Free Software Foundation, Inc. 4169689Skan 5169689SkanThis file is part of GCC. 6169689Skan 7169689SkanGCC is free software; you can redistribute it and/or modify 8169689Skanit under the terms of the GNU General Public License as published by 9169689Skanthe Free Software Foundation; either version 2, or (at your option) 10169689Skanany later version. 11169689Skan 12169689SkanGCC is distributed in the hope that it will be useful, 13169689Skanbut WITHOUT ANY WARRANTY; without even the implied warranty of 14169689SkanMERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 15169689SkanGNU General Public License for more details. 16169689Skan 17169689SkanYou should have received a copy of the GNU General Public License 18169689Skanalong with GCC; see the file COPYING. If not, write to 19169689Skanthe Free Software Foundation, 51 Franklin Street, Fifth Floor, 20169689SkanBoston, MA 02110-1301, USA. */ 21169689Skan 22169689Skan/* We are compiling for IRIX now. */ 23169689Skan#undef TARGET_IRIX 24169689Skan#define TARGET_IRIX 1 25169689Skan 26169689Skan/* The size in bytes of a DWARF field indicating an offset or length 27169689Skan relative to a debug info section, specified to be 4 bytes in the DWARF-2 28169689Skan specification. The SGI/MIPS ABI defines it to be the same as PTR_SIZE. */ 29169689Skan#define DWARF_OFFSET_SIZE PTR_SIZE 30169689Skan 31169689Skan/* The size in bytes of the initial length field in a debug info 32169689Skan section. The DWARF 3 (draft) specification defines this to be 33169689Skan either 4 or 12 (with a 4-byte "escape" word when it's 12), but the 34169689Skan SGI/MIPS ABI predates this standard and defines it to be the same 35169689Skan as DWARF_OFFSET_SIZE. */ 36169689Skan#define DWARF_INITIAL_LENGTH_SIZE DWARF_OFFSET_SIZE 37169689Skan 38169689Skan/* MIPS assemblers don't have the usual .set foo,bar construct; 39169689Skan .set is used for assembler options instead. */ 40169689Skan#undef SET_ASM_OP 41169689Skan#define ASM_OUTPUT_DEF(FILE, LABEL1, LABEL2) \ 42169689Skan do \ 43169689Skan { \ 44169689Skan fputc ('\t', FILE); \ 45169689Skan assemble_name (FILE, LABEL1); \ 46169689Skan fputs (" = ", FILE); \ 47169689Skan assemble_name (FILE, LABEL2); \ 48169689Skan fputc ('\n', FILE); \ 49169689Skan } \ 50169689Skan while (0) 51169689Skan 52169689Skan/* The MIPSpro o32 linker warns about not linking .comment sections. */ 53169689Skan#undef IDENT_ASM_OP 54169689Skan 55169689Skan#undef LOCAL_LABEL_PREFIX 56169689Skan#define LOCAL_LABEL_PREFIX (TARGET_NEWABI ? "." : "$") 57169689Skan 58169689Skan#undef ASM_DECLARE_OBJECT_NAME 59169689Skan#define ASM_DECLARE_OBJECT_NAME mips_declare_object_name 60169689Skan 61169689Skan#undef ASM_FINISH_DECLARE_OBJECT 62169689Skan#define ASM_FINISH_DECLARE_OBJECT mips_finish_declare_object 63169689Skan 64169689Skan/* Also do this for libcalls. */ 65169689Skan#undef TARGET_ASM_EXTERNAL_LIBCALL 66169689Skan#define TARGET_ASM_EXTERNAL_LIBCALL irix_output_external_libcall 67169689Skan 68169689Skan/* The linker needs a space after "-o". */ 69169689Skan#define SWITCHES_NEED_SPACES "o" 70169689Skan 71169689Skan/* Specify wchar_t types. */ 72169689Skan#undef WCHAR_TYPE 73169689Skan#define WCHAR_TYPE (Pmode == DImode ? "int" : "long int") 74169689Skan 75169689Skan#undef WCHAR_TYPE_SIZE 76169689Skan#define WCHAR_TYPE_SIZE INT_TYPE_SIZE 77169689Skan 78169689Skan/* Same for wint_t. */ 79169689Skan#undef WINT_TYPE 80169689Skan#define WINT_TYPE (Pmode == DImode ? "int" : "long int") 81169689Skan 82169689Skan#undef WINT_TYPE_SIZE 83169689Skan#define WINT_TYPE_SIZE 32 84169689Skan 85169689Skan/* Plain char is unsigned in the SGI compiler. */ 86169689Skan#undef DEFAULT_SIGNED_CHAR 87169689Skan#define DEFAULT_SIGNED_CHAR 0 88169689Skan 89169689Skan#define WORD_SWITCH_TAKES_ARG(STR) \ 90169689Skan (DEFAULT_WORD_SWITCH_TAKES_ARG (STR) \ 91169689Skan || strcmp (STR, "rpath") == 0) 92169689Skan 93169689Skan#define TARGET_OS_CPP_BUILTINS() \ 94169689Skan do \ 95169689Skan { \ 96169689Skan builtin_define_std ("host_mips"); \ 97169689Skan builtin_define_std ("sgi"); \ 98169689Skan builtin_define_std ("unix"); \ 99169689Skan builtin_define_std ("SYSTYPE_SVR4"); \ 100169689Skan builtin_define ("_MODERN_C"); \ 101169689Skan builtin_define ("_SVR4_SOURCE"); \ 102169689Skan builtin_define ("__DSO__"); \ 103169689Skan builtin_assert ("system=unix"); \ 104169689Skan builtin_assert ("system=svr4"); \ 105169689Skan builtin_assert ("machine=sgi"); \ 106169689Skan \ 107169689Skan if (mips_abi == ABI_32) \ 108169689Skan { \ 109169689Skan builtin_define ("_ABIO32=1"); \ 110169689Skan builtin_define ("_MIPS_SIM=_ABIO32"); \ 111169689Skan builtin_define ("_MIPS_SZINT=32"); \ 112169689Skan builtin_define ("_MIPS_SZLONG=32"); \ 113169689Skan builtin_define ("_MIPS_SZPTR=32"); \ 114169689Skan } \ 115169689Skan else if (mips_abi == ABI_64) \ 116169689Skan { \ 117169689Skan builtin_define ("_ABI64=3"); \ 118169689Skan builtin_define ("_MIPS_SIM=_ABI64"); \ 119169689Skan builtin_define ("_MIPS_SZINT=32"); \ 120169689Skan builtin_define ("_MIPS_SZLONG=64"); \ 121169689Skan builtin_define ("_MIPS_SZPTR=64"); \ 122169689Skan } \ 123169689Skan else \ 124169689Skan { \ 125169689Skan builtin_define ("_ABIN32=2"); \ 126169689Skan builtin_define ("_MIPS_SIM=_ABIN32"); \ 127169689Skan builtin_define ("_MIPS_SZINT=32"); \ 128169689Skan builtin_define ("_MIPS_SZLONG=32"); \ 129169689Skan builtin_define ("_MIPS_SZPTR=32"); \ 130169689Skan } \ 131169689Skan \ 132169689Skan if (!ISA_MIPS1 && !ISA_MIPS2) \ 133169689Skan builtin_define ("_COMPILER_VERSION=601"); \ 134169689Skan \ 135169689Skan if (!TARGET_FLOAT64) \ 136169689Skan builtin_define ("_MIPS_FPSET=16"); \ 137169689Skan else \ 138169689Skan builtin_define ("_MIPS_FPSET=32"); \ 139169689Skan \ 140169689Skan /* We must always define _LONGLONG, even when -ansi is \ 141169689Skan used, because IRIX 5 system header files require it. \ 142169689Skan This is OK, because gcc never warns when long long \ 143169689Skan is used in system header files. \ 144169689Skan \ 145169689Skan An alternative would be to support the SGI builtin \ 146169689Skan type __long_long. */ \ 147169689Skan builtin_define ("_LONGLONG"); \ 148169689Skan \ 149169689Skan /* IRIX 6.5.18 and above provide many ISO C99 \ 150169689Skan features protected by the __c99 macro. \ 151169689Skan libstdc++ v3 needs them as well. */ \ 152169689Skan if (TARGET_IRIX6) \ 153169689Skan if (flag_isoc99 || c_dialect_cxx ()) \ 154169689Skan builtin_define ("__c99"); \ 155169689Skan \ 156169689Skan /* The GNU C++ standard library requires that \ 157169689Skan __EXTENSIONS__ and _SGI_SOURCE be defined on at \ 158169689Skan least IRIX 6.2 and probably all IRIX 6 prior to 6.5. \ 159169689Skan We don't need this on IRIX 6.5 itself, but it \ 160169689Skan shouldn't hurt other than the namespace pollution. */ \ 161169689Skan if (!flag_iso || (TARGET_IRIX6 && c_dialect_cxx ())) \ 162169689Skan { \ 163169689Skan builtin_define ("__EXTENSIONS__"); \ 164169689Skan builtin_define ("_SGI_SOURCE"); \ 165169689Skan } \ 166169689Skan } \ 167169689Skan while (0) 168169689Skan 169169689Skan#undef SUBTARGET_CC1_SPEC 170169689Skan#define SUBTARGET_CC1_SPEC "%{static: -mno-abicalls}" 171169689Skan 172169689Skan#undef INIT_SECTION_ASM_OP 173169689Skan#define INIT_SECTION_ASM_OP "\t.section\t.gcc_init,\"ax\",@progbits" 174169689Skan 175169689Skan#undef FINI_SECTION_ASM_OP 176169689Skan#define FINI_SECTION_ASM_OP "\t.section\t.gcc_fini,\"ax\",@progbits" 177169689Skan 178169689Skan#ifdef IRIX_USING_GNU_LD 179169689Skan#define IRIX_NO_UNRESOLVED "" 180169689Skan#else 181169689Skan#define IRIX_NO_UNRESOLVED "-no_unresolved" 182169689Skan#endif 183169689Skan 184169689Skan/* Generic part of the LINK_SPEC. */ 185169689Skan#undef LINK_SPEC 186169689Skan#define LINK_SPEC "\ 187169689Skan%{G*} %{EB} %{EL} %{mips1} %{mips2} %{mips3} %{mips4} \ 188169689Skan%{bestGnum} %{shared} %{non_shared} \ 189169689Skan%{call_shared} %{no_archive} %{exact_version} \ 190169689Skan%{!shared: \ 191169689Skan %{!non_shared: %{!call_shared:%{!r: -call_shared " IRIX_NO_UNRESOLVED "}}}} \ 192169689Skan%{rpath} -init __gcc_init -fini __gcc_fini " IRIX_SUBTARGET_LINK_SPEC 193169689Skan 194169689Skan/* A linker error can empirically be avoided by removing duplicate 195169689Skan library search directories. */ 196169689Skan#define LINK_ELIMINATE_DUPLICATE_LDIRECTORIES 1 197169689Skan 198169689Skan/* Add -g to mips.h default to avoid confusing gas with local symbols 199169689Skan generated from stabs info. */ 200169689Skan#undef NM_FLAGS 201169689Skan#define NM_FLAGS "-Bng" 202169689Skan 203169689Skan/* The system header files are C++ aware. */ 204169689Skan/* ??? Unfortunately, most but not all of the headers are C++ aware. 205169689Skan Specifically, curses.h is not, and as a consequence, defining this 206169689Skan used to prevent libg++ building. This is no longer the case so 207169689Skan define it again to prevent other problems, e.g. with getopt in 208169689Skan unistd.h. We still need some way to fix just those files that need 209169689Skan fixing. */ 210169689Skan#define NO_IMPLICIT_EXTERN_C 1 211169689Skan 212169689Skan/* -G is incompatible with -KPIC which is the default, so only allow objects 213169689Skan in the small data section if the user explicitly asks for it. */ 214169689Skan#undef MIPS_DEFAULT_GVALUE 215169689Skan#define MIPS_DEFAULT_GVALUE 0 216169689Skan 217169689Skan/* The native o32 IRIX linker does not support merging without a 218169689Skan special elspec(5) file. */ 219169689Skan#ifndef IRIX_USING_GNU_LD 220169689Skan#undef HAVE_GAS_SHF_MERGE 221169689Skan#define HAVE_GAS_SHF_MERGE 0 222169689Skan#endif 223