iris.h revision 169689
138032Speter/* Definitions of target machine for GNU compiler. Generic IRIX version. 2203004Sgshapiro Copyright (C) 1993, 1995, 1996, 1998, 2000, 364565Sgshapiro 2001, 2002, 2003, 2004 Free Software Foundation, Inc. 438032Speter 538032SpeterThis file is part of GCC. 638032Speter 738032SpeterGCC is free software; you can redistribute it and/or modify 838032Speterit under the terms of the GNU General Public License as published by 938032Speterthe Free Software Foundation; either version 2, or (at your option) 1038032Speterany later version. 1138032Speter 1238032SpeterGCC is distributed in the hope that it will be useful, 1338032Speterbut WITHOUT ANY WARRANTY; without even the implied warranty of 1490795SgshapiroMERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 1590795SgshapiroGNU General Public License for more details. 1690795Sgshapiro 1773191SgshapiroYou should have received a copy of the GNU General Public License 1864565Sgshapiroalong with GCC; see the file COPYING. If not, write to 1964565Sgshapirothe Free Software Foundation, 51 Franklin Street, Fifth Floor, 2064565SgshapiroBoston, MA 02110-1301, USA. */ 2190795Sgshapiro 2238032Speter/* We are compiling for IRIX now. */ 23203004Sgshapiro#undef TARGET_IRIX 2438032Speter#define TARGET_IRIX 1 2564565Sgshapiro 2664565Sgshapiro/* The size in bytes of a DWARF field indicating an offset or length 2764565Sgshapiro relative to a debug info section, specified to be 4 bytes in the DWARF-2 2864565Sgshapiro specification. The SGI/MIPS ABI defines it to be the same as PTR_SIZE. */ 2964565Sgshapiro#define DWARF_OFFSET_SIZE PTR_SIZE 3064565Sgshapiro 3164565Sgshapiro/* The size in bytes of the initial length field in a debug info 3264565Sgshapiro section. The DWARF 3 (draft) specification defines this to be 3364565Sgshapiro either 4 or 12 (with a 4-byte "escape" word when it's 12), but the 3464565Sgshapiro SGI/MIPS ABI predates this standard and defines it to be the same 3538032Speter as DWARF_OFFSET_SIZE. */ 3638032Speter#define DWARF_INITIAL_LENGTH_SIZE DWARF_OFFSET_SIZE 3764565Sgshapiro 3864565Sgshapiro/* MIPS assemblers don't have the usual .set foo,bar construct; 3964565Sgshapiro .set is used for assembler options instead. */ 4064565Sgshapiro#undef SET_ASM_OP 4138032Speter#define ASM_OUTPUT_DEF(FILE, LABEL1, LABEL2) \ 4264565Sgshapiro do \ 4338032Speter { \ 4464565Sgshapiro fputc ('\t', FILE); \ 4564565Sgshapiro assemble_name (FILE, LABEL1); \ 4664565Sgshapiro fputs (" = ", FILE); \ 4764565Sgshapiro assemble_name (FILE, LABEL2); \ 48173343Sgshapiro fputc ('\n', FILE); \ 4964565Sgshapiro } \ 5064565Sgshapiro while (0) 5190795Sgshapiro 5264565Sgshapiro/* The MIPSpro o32 linker warns about not linking .comment sections. */ 5364565Sgshapiro#undef IDENT_ASM_OP 5438032Speter 5571348Sgshapiro#undef LOCAL_LABEL_PREFIX 5671348Sgshapiro#define LOCAL_LABEL_PREFIX (TARGET_NEWABI ? "." : "$") 5764565Sgshapiro 5838032Speter#undef ASM_DECLARE_OBJECT_NAME 5938032Speter#define ASM_DECLARE_OBJECT_NAME mips_declare_object_name 6038032Speter 6138032Speter#undef ASM_FINISH_DECLARE_OBJECT 6238032Speter#define ASM_FINISH_DECLARE_OBJECT mips_finish_declare_object 6342580Speter 6442580Speter/* Also do this for libcalls. */ 6590795Sgshapiro#undef TARGET_ASM_EXTERNAL_LIBCALL 6638032Speter#define TARGET_ASM_EXTERNAL_LIBCALL irix_output_external_libcall 6742580Speter 6842580Speter/* The linker needs a space after "-o". */ 6964565Sgshapiro#define SWITCHES_NEED_SPACES "o" 7064565Sgshapiro 7164565Sgshapiro/* Specify wchar_t types. */ 7264565Sgshapiro#undef WCHAR_TYPE 7338032Speter#define WCHAR_TYPE (Pmode == DImode ? "int" : "long int") 7464565Sgshapiro 7564565Sgshapiro#undef WCHAR_TYPE_SIZE 7664565Sgshapiro#define WCHAR_TYPE_SIZE INT_TYPE_SIZE 7764565Sgshapiro 7864565Sgshapiro/* Same for wint_t. */ 7964565Sgshapiro#undef WINT_TYPE 8064565Sgshapiro#define WINT_TYPE (Pmode == DImode ? "int" : "long int") 8164565Sgshapiro 8290795Sgshapiro#undef WINT_TYPE_SIZE 8364565Sgshapiro#define WINT_TYPE_SIZE 32 8464565Sgshapiro 8590795Sgshapiro/* Plain char is unsigned in the SGI compiler. */ 8690795Sgshapiro#undef DEFAULT_SIGNED_CHAR 8764565Sgshapiro#define DEFAULT_SIGNED_CHAR 0 8864565Sgshapiro 8990795Sgshapiro#define WORD_SWITCH_TAKES_ARG(STR) \ 9042580Speter (DEFAULT_WORD_SWITCH_TAKES_ARG (STR) \ 9142580Speter || strcmp (STR, "rpath") == 0) 9242580Speter 9342580Speter#define TARGET_OS_CPP_BUILTINS() \ 9442580Speter do \ 9542580Speter { \ 9638032Speter builtin_define_std ("host_mips"); \ 9738032Speter builtin_define_std ("sgi"); \ 9838032Speter builtin_define_std ("unix"); \ 9938032Speter builtin_define_std ("SYSTYPE_SVR4"); \ 10038032Speter builtin_define ("_MODERN_C"); \ 10190795Sgshapiro builtin_define ("_SVR4_SOURCE"); \ 102203004Sgshapiro builtin_define ("__DSO__"); \ 103203004Sgshapiro builtin_assert ("system=unix"); \ 10438032Speter builtin_assert ("system=svr4"); \ 10538032Speter builtin_assert ("machine=sgi"); \ 10642580Speter \ 10738032Speter if (mips_abi == ABI_32) \ 10838032Speter { \ 10938032Speter builtin_define ("_ABIO32=1"); \ 11042580Speter builtin_define ("_MIPS_SIM=_ABIO32"); \ 11142580Speter builtin_define ("_MIPS_SZINT=32"); \ 11242580Speter builtin_define ("_MIPS_SZLONG=32"); \ 11342580Speter builtin_define ("_MIPS_SZPTR=32"); \ 11442580Speter } \ 11542580Speter else if (mips_abi == ABI_64) \ 11690795Sgshapiro { \ 11790795Sgshapiro builtin_define ("_ABI64=3"); \ 11842580Speter builtin_define ("_MIPS_SIM=_ABI64"); \ 11990795Sgshapiro builtin_define ("_MIPS_SZINT=32"); \ 12090795Sgshapiro builtin_define ("_MIPS_SZLONG=64"); \ 12190795Sgshapiro builtin_define ("_MIPS_SZPTR=64"); \ 12242580Speter } \ 12342580Speter else \ 12442580Speter { \ 12590795Sgshapiro builtin_define ("_ABIN32=2"); \ 12642580Speter builtin_define ("_MIPS_SIM=_ABIN32"); \ 12742580Speter builtin_define ("_MIPS_SZINT=32"); \ 12842580Speter builtin_define ("_MIPS_SZLONG=32"); \ 12964565Sgshapiro builtin_define ("_MIPS_SZPTR=32"); \ 13064565Sgshapiro } \ 13164565Sgshapiro \ 13264565Sgshapiro if (!ISA_MIPS1 && !ISA_MIPS2) \ 13342580Speter builtin_define ("_COMPILER_VERSION=601"); \ 13442580Speter \ 13542580Speter if (!TARGET_FLOAT64) \ 13642580Speter builtin_define ("_MIPS_FPSET=16"); \ 13790795Sgshapiro else \ 13842580Speter builtin_define ("_MIPS_FPSET=32"); \ 13942580Speter \ 14042580Speter /* We must always define _LONGLONG, even when -ansi is \ 14142580Speter used, because IRIX 5 system header files require it. \ 14242580Speter This is OK, because gcc never warns when long long \ 14342580Speter is used in system header files. \ 14442580Speter \ 14542580Speter An alternative would be to support the SGI builtin \ 14642580Speter type __long_long. */ \ 14742580Speter builtin_define ("_LONGLONG"); \ 14842580Speter \ 14942580Speter /* IRIX 6.5.18 and above provide many ISO C99 \ 15042580Speter features protected by the __c99 macro. \ 15142580Speter libstdc++ v3 needs them as well. */ \ 15242580Speter if (TARGET_IRIX6) \ 15342580Speter if (flag_isoc99 || c_dialect_cxx ()) \ 15490795Sgshapiro builtin_define ("__c99"); \ 15564565Sgshapiro \ 15642580Speter /* The GNU C++ standard library requires that \ 15790795Sgshapiro __EXTENSIONS__ and _SGI_SOURCE be defined on at \ 15890795Sgshapiro least IRIX 6.2 and probably all IRIX 6 prior to 6.5. \ 15942580Speter We don't need this on IRIX 6.5 itself, but it \ 16090795Sgshapiro shouldn't hurt other than the namespace pollution. */ \ 16142580Speter if (!flag_iso || (TARGET_IRIX6 && c_dialect_cxx ())) \ 16242580Speter { \ 16342580Speter builtin_define ("__EXTENSIONS__"); \ 16442580Speter builtin_define ("_SGI_SOURCE"); \ 16542580Speter } \ 16642580Speter } \ 16742580Speter while (0) 16842580Speter 16942580Speter#undef SUBTARGET_CC1_SPEC 17042580Speter#define SUBTARGET_CC1_SPEC "%{static: -mno-abicalls}" 17142580Speter 17242580Speter#undef INIT_SECTION_ASM_OP 17371348Sgshapiro#define INIT_SECTION_ASM_OP "\t.section\t.gcc_init,\"ax\",@progbits" 17464565Sgshapiro 17542580Speter#undef FINI_SECTION_ASM_OP 17642580Speter#define FINI_SECTION_ASM_OP "\t.section\t.gcc_fini,\"ax\",@progbits" 17764565Sgshapiro 17890795Sgshapiro#ifdef IRIX_USING_GNU_LD 17964565Sgshapiro#define IRIX_NO_UNRESOLVED "" 18064565Sgshapiro#else 18164565Sgshapiro#define IRIX_NO_UNRESOLVED "-no_unresolved" 18264565Sgshapiro#endif 18364565Sgshapiro 18464565Sgshapiro/* Generic part of the LINK_SPEC. */ 18564565Sgshapiro#undef LINK_SPEC 18664565Sgshapiro#define LINK_SPEC "\ 18764565Sgshapiro%{G*} %{EB} %{EL} %{mips1} %{mips2} %{mips3} %{mips4} \ 18864565Sgshapiro%{bestGnum} %{shared} %{non_shared} \ 18964565Sgshapiro%{call_shared} %{no_archive} %{exact_version} \ 19064565Sgshapiro%{!shared: \ 19164565Sgshapiro %{!non_shared: %{!call_shared:%{!r: -call_shared " IRIX_NO_UNRESOLVED "}}}} \ 19264565Sgshapiro%{rpath} -init __gcc_init -fini __gcc_fini " IRIX_SUBTARGET_LINK_SPEC 19364565Sgshapiro 19464565Sgshapiro/* A linker error can empirically be avoided by removing duplicate 19564565Sgshapiro library search directories. */ 19664565Sgshapiro#define LINK_ELIMINATE_DUPLICATE_LDIRECTORIES 1 19764565Sgshapiro 19864565Sgshapiro/* Add -g to mips.h default to avoid confusing gas with local symbols 19964565Sgshapiro generated from stabs info. */ 20064565Sgshapiro#undef NM_FLAGS 20164565Sgshapiro#define NM_FLAGS "-Bng" 20264565Sgshapiro 20364565Sgshapiro/* The system header files are C++ aware. */ 20464565Sgshapiro/* ??? Unfortunately, most but not all of the headers are C++ aware. 20564565Sgshapiro Specifically, curses.h is not, and as a consequence, defining this 20642580Speter used to prevent libg++ building. This is no longer the case so 20764565Sgshapiro define it again to prevent other problems, e.g. with getopt in 20864565Sgshapiro unistd.h. We still need some way to fix just those files that need 20964565Sgshapiro fixing. */ 21064565Sgshapiro#define NO_IMPLICIT_EXTERN_C 1 21164565Sgshapiro 21264565Sgshapiro/* -G is incompatible with -KPIC which is the default, so only allow objects 21364565Sgshapiro in the small data section if the user explicitly asks for it. */ 21464565Sgshapiro#undef MIPS_DEFAULT_GVALUE 21564565Sgshapiro#define MIPS_DEFAULT_GVALUE 0 21642580Speter 21764565Sgshapiro/* The native o32 IRIX linker does not support merging without a 21842580Speter special elspec(5) file. */ 21942580Speter#ifndef IRIX_USING_GNU_LD 22042580Speter#undef HAVE_GAS_SHF_MERGE 22142580Speter#define HAVE_GAS_SHF_MERGE 0 22242580Speter#endif 22342580Speter