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julius |
/* Definitions of target machine for GNU compiler. Generic IRIX version.
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Copyright (C) 1993, 1995, 1996, 1998, 2000,
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2001, 2002, 2003, 2004, 2007 Free Software Foundation, Inc.
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This file is part of GCC.
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GCC is free software; you can redistribute it and/or modify
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it under the terms of the GNU General Public License as published by
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the Free Software Foundation; either version 3, or (at your option)
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any later version.
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GCC is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with GCC; see the file COPYING3. If not see
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<http://www.gnu.org/licenses/>. */
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/* We are compiling for IRIX now. */
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#undef TARGET_IRIX
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#define TARGET_IRIX 1
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/* The size in bytes of a DWARF field indicating an offset or length
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relative to a debug info section, specified to be 4 bytes in the DWARF-2
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specification. The SGI/MIPS ABI defines it to be the same as PTR_SIZE. */
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#define DWARF_OFFSET_SIZE PTR_SIZE
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/* The size in bytes of the initial length field in a debug info
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section. The DWARF 3 (draft) specification defines this to be
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either 4 or 12 (with a 4-byte "escape" word when it's 12), but the
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SGI/MIPS ABI predates this standard and defines it to be the same
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as DWARF_OFFSET_SIZE. */
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#define DWARF_INITIAL_LENGTH_SIZE DWARF_OFFSET_SIZE
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/* MIPS assemblers don't have the usual .set foo,bar construct;
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.set is used for assembler options instead. */
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#undef SET_ASM_OP
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#define ASM_OUTPUT_DEF(FILE, LABEL1, LABEL2) \
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do \
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{ \
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fputc ('\t', FILE); \
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assemble_name (FILE, LABEL1); \
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fputs (" = ", FILE); \
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assemble_name (FILE, LABEL2); \
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fputc ('\n', FILE); \
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} \
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while (0)
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/* The MIPSpro o32 linker warns about not linking .comment sections. */
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#undef IDENT_ASM_OP
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#undef LOCAL_LABEL_PREFIX
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#define LOCAL_LABEL_PREFIX (TARGET_NEWABI ? "." : "$")
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#undef ASM_DECLARE_OBJECT_NAME
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#define ASM_DECLARE_OBJECT_NAME mips_declare_object_name
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#undef ASM_FINISH_DECLARE_OBJECT
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#define ASM_FINISH_DECLARE_OBJECT mips_finish_declare_object
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/* Also do this for libcalls. */
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#undef TARGET_ASM_EXTERNAL_LIBCALL
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#define TARGET_ASM_EXTERNAL_LIBCALL irix_output_external_libcall
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/* The linker needs a space after "-o". */
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#define SWITCHES_NEED_SPACES "o"
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/* Specify wchar_t types. */
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#undef WCHAR_TYPE
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#define WCHAR_TYPE (Pmode == DImode ? "int" : "long int")
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#undef WCHAR_TYPE_SIZE
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#define WCHAR_TYPE_SIZE INT_TYPE_SIZE
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/* Same for wint_t. */
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#undef WINT_TYPE
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#define WINT_TYPE (Pmode == DImode ? "int" : "long int")
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#undef WINT_TYPE_SIZE
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#define WINT_TYPE_SIZE 32
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/* Plain char is unsigned in the SGI compiler. */
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#undef DEFAULT_SIGNED_CHAR
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#define DEFAULT_SIGNED_CHAR 0
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#define WORD_SWITCH_TAKES_ARG(STR) \
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(DEFAULT_WORD_SWITCH_TAKES_ARG (STR) \
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|| strcmp (STR, "rpath") == 0)
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#define TARGET_OS_CPP_BUILTINS() \
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do \
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{ \
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builtin_define_std ("host_mips"); \
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builtin_define_std ("sgi"); \
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builtin_define_std ("unix"); \
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builtin_define_std ("SYSTYPE_SVR4"); \
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builtin_define ("_MODERN_C"); \
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builtin_define ("_SVR4_SOURCE"); \
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builtin_define ("__DSO__"); \
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builtin_assert ("system=unix"); \
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builtin_assert ("system=svr4"); \
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builtin_assert ("machine=sgi"); \
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\
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if (mips_abi == ABI_32) \
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{ \
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builtin_define ("_ABIO32=1"); \
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builtin_define ("_MIPS_SIM=_ABIO32"); \
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builtin_define ("_MIPS_SZINT=32"); \
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builtin_define ("_MIPS_SZLONG=32"); \
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builtin_define ("_MIPS_SZPTR=32"); \
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} \
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else if (mips_abi == ABI_64) \
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{ \
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builtin_define ("_ABI64=3"); \
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builtin_define ("_MIPS_SIM=_ABI64"); \
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builtin_define ("_MIPS_SZINT=32"); \
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builtin_define ("_MIPS_SZLONG=64"); \
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builtin_define ("_MIPS_SZPTR=64"); \
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} \
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else \
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{ \
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builtin_define ("_ABIN32=2"); \
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builtin_define ("_MIPS_SIM=_ABIN32"); \
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builtin_define ("_MIPS_SZINT=32"); \
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builtin_define ("_MIPS_SZLONG=32"); \
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builtin_define ("_MIPS_SZPTR=32"); \
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} \
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\
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if (!ISA_MIPS1 && !ISA_MIPS2) \
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builtin_define ("_COMPILER_VERSION=601"); \
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\
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if (!TARGET_FLOAT64) \
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builtin_define ("_MIPS_FPSET=16"); \
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else \
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builtin_define ("_MIPS_FPSET=32"); \
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\
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/* We must always define _LONGLONG, even when -ansi is \
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used, because IRIX 5 system header files require it. \
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This is OK, because gcc never warns when long long \
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is used in system header files. \
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\
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An alternative would be to support the SGI builtin \
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type __long_long. */ \
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builtin_define ("_LONGLONG"); \
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\
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/* IRIX 6.5.18 and above provide many ISO C99 \
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features protected by the __c99 macro. \
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libstdc++ v3 needs them as well. */ \
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if (TARGET_IRIX6) \
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if (flag_isoc99 || c_dialect_cxx ()) \
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builtin_define ("__c99"); \
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\
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/* The GNU C++ standard library requires that \
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__EXTENSIONS__ and _SGI_SOURCE be defined on at \
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least IRIX 6.2 and probably all IRIX 6 prior to 6.5. \
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We don't need this on IRIX 6.5 itself, but it \
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shouldn't hurt other than the namespace pollution. */ \
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if (!flag_iso || (TARGET_IRIX6 && c_dialect_cxx ())) \
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{ \
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builtin_define ("__EXTENSIONS__"); \
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builtin_define ("_SGI_SOURCE"); \
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} \
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} \
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while (0)
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#undef SUBTARGET_CC1_SPEC
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#define SUBTARGET_CC1_SPEC "%{static: -mno-abicalls}"
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#undef INIT_SECTION_ASM_OP
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#define INIT_SECTION_ASM_OP "\t.section\t.gcc_init,\"ax\",@progbits"
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#undef FINI_SECTION_ASM_OP
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#define FINI_SECTION_ASM_OP "\t.section\t.gcc_fini,\"ax\",@progbits"
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#ifdef IRIX_USING_GNU_LD
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#define IRIX_NO_UNRESOLVED ""
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#else
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#define IRIX_NO_UNRESOLVED "-no_unresolved"
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#endif
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/* Generic part of the LINK_SPEC. */
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#undef LINK_SPEC
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#define LINK_SPEC "\
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%{G*} %{EB} %{EL} %{mips1} %{mips2} %{mips3} %{mips4} \
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%{bestGnum} %{shared} %{non_shared} \
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%{call_shared} %{no_archive} %{exact_version} \
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%{!shared: \
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%{!non_shared: %{!call_shared:%{!r: -call_shared " IRIX_NO_UNRESOLVED "}}}} \
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%{rpath} -init __gcc_init -fini __gcc_fini " IRIX_SUBTARGET_LINK_SPEC
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/* A linker error can empirically be avoided by removing duplicate
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library search directories. */
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#define LINK_ELIMINATE_DUPLICATE_LDIRECTORIES 1
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/* Add -g to mips.h default to avoid confusing gas with local symbols
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generated from stabs info. */
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#undef NM_FLAGS
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#define NM_FLAGS "-Bng"
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/* The system header files are C++ aware. */
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/* ??? Unfortunately, most but not all of the headers are C++ aware.
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Specifically, curses.h is not, and as a consequence, defining this
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used to prevent libg++ building. This is no longer the case so
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define it again to prevent other problems, e.g. with getopt in
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unistd.h. We still need some way to fix just those files that need
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fixing. */
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#define NO_IMPLICIT_EXTERN_C 1
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/* -G is incompatible with -KPIC which is the default, so only allow objects
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in the small data section if the user explicitly asks for it. */
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#undef MIPS_DEFAULT_GVALUE
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#define MIPS_DEFAULT_GVALUE 0
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/* The native o32 IRIX linker does not support merging without a
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special elspec(5) file. */
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#ifndef IRIX_USING_GNU_LD
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#undef HAVE_GAS_SHF_MERGE
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#define HAVE_GAS_SHF_MERGE 0
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#endif
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