-/* Definitions of target machine for GNU compiler. IRIX version 6.
- Copyright (C) 1994, 1995, 1996, 1997, 1998, 2000, 2001, 2002, 2003, 2004
+/* Definitions of target machine for GNU compiler. IRIX 6.5 version.
+ Copyright (C) 1993, 1994, 1995, 1996, 1997, 1998, 2000,
+ 2001, 2002, 2003, 2004, 2005, 2006, 2007, 2008, 2009, 2010
Free Software Foundation, Inc.
This file is part of GCC.
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)
+the Free Software Foundation; either version 3, or (at your option)
any later version.
GCC is distributed in the hope that it will be useful,
GNU General Public License for more details.
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. */
+along with GCC; see the file COPYING3. If not see
+<http://www.gnu.org/licenses/>. */
-/* No more special IRIX 5 handling. */
-#undef TARGET_IRIX5
-#define TARGET_IRIX5 0
+/* We are compiling for IRIX 6 now. */
+#undef TARGET_IRIX6
+#define TARGET_IRIX6 1
+
+#undef MACHINE_TYPE
+#define MACHINE_TYPE "SGI running IRIX 6.5"
/* Default to -mabi=n32 and -mips3. */
#undef MULTILIB_DEFAULTS
#define MULTILIB_DEFAULTS { "mabi=n32" }
-/* The IRIX 6 O32 assembler cannot calculate label differences, while both
- the N32/N64 assembler and gas can. Override setting in iris5.h file. */
-#undef DWARF2_UNWIND_INFO
-#define DWARF2_UNWIND_INFO !TARGET_SGI_O32_AS
-
-/* The IRIX 6 assembler will sometimes assign labels to the wrong
- section unless the labels are within .ent/.end blocks. Therefore,
- we avoid creating such labels. */
-#define DWARF2_GENERATE_TEXT_SECTION_LABEL 0
-
-/* wchar_t is defined differently with and without -mabi=64. */
-
-#undef WCHAR_TYPE
-#define WCHAR_TYPE (Pmode == DImode ? "int" : "long int")
+/* Force the default ABI onto the command line in order to make the specs
+ easier to write. */
+#undef DRIVER_SELF_SPECS
+#define DRIVER_SELF_SPECS \
+ "%{!mabi=*: -mabi=n32}", \
+ /* Configuration-independent MIPS rules. */ \
+ BASE_DRIVER_SELF_SPECS
-#undef WCHAR_TYPE_SIZE
-#define WCHAR_TYPE_SIZE 32
-
-/* Same for wint_t. */
-
-#undef WINT_TYPE
-#define WINT_TYPE (Pmode == DImode ? "int" : "long int")
-
-#undef WINT_TYPE_SIZE
-#define WINT_TYPE_SIZE 32
-
-/* For IRIX 6, -mabi=64 implies TARGET_LONG64. */
-/* This is handled in override_options. */
-
-/* Default to the mips2 ISA for the O32 ABI. */
-#undef SUBTARGET_CC1_SPEC
-#define SUBTARGET_CC1_SPEC "%{mabi=32: %{!mips*: -mips2}}"
-
-/* #line directives let the O32 assembler create object files that cause the
- O32 linker to crash. */
-#undef SUBTARGET_CPP_SPEC
-#define SUBTARGET_CPP_SPEC "%{mabi=32: %{.S:-P}}"
-
-/* We must pass -D_LONGLONG always, even when -ansi is used, because IRIX 6
- system header files require it. This is OK, because gcc never warns
- when long long is used in system header files. Alternatively, we can
- add support for the SGI builtin type __long_long. */
-
-/* The GNU C++ standard library requires that __EXTENSIONS__ and
- _SGI_SOURCE be defined on at least IRIX 6.2 and probably all IRIX 6
- prior to 6.5. They normally get defined if !ansi, for g++ we want
- them regardless. We don't need this on IRIX 6.5 itself, but it
- shouldn't hurt other than the namespace pollution. */
-
-/* Undefine because this includes iris5.h. */
-#undef TARGET_OS_CPP_BUILTINS
-#define TARGET_OS_CPP_BUILTINS() \
- do { \
- builtin_define_std ("host_mips"); \
- builtin_define ("_LONGLONG"); \
- builtin_define ("_MODERN_C"); \
- builtin_define ("_SVR4_SOURCE"); \
- builtin_define_std ("SYSTYPE_SVR4"); \
- builtin_define ("__DSO__"); \
- builtin_define_std ("unix"); \
- builtin_define_std ("sgi"); \
- builtin_assert ("system=svr4"); \
- builtin_assert ("system=unix"); \
- builtin_assert ("machine=sgi"); \
- \
- if (mips_abi == ABI_32) \
- { \
- builtin_define ("_ABIO32=1"); \
- builtin_define ("_MIPS_SIM=_ABIO32"); \
- builtin_define ("_MIPS_SZLONG=32"); \
- builtin_define ("_MIPS_SZPTR=32"); \
- } \
- else if (mips_abi == ABI_64) \
- { \
- builtin_define ("_ABI64=3"); \
- builtin_define ("_MIPS_SIM=_ABI64"); \
- builtin_define ("_MIPS_SZLONG=64"); \
- builtin_define ("_MIPS_SZPTR=64"); \
- } \
- else \
- { \
- builtin_define ("_ABIN32=2"); \
- builtin_define ("_MIPS_SIM=_ABIN32"); \
- builtin_define ("_MIPS_SZLONG=32"); \
- builtin_define ("_MIPS_SZPTR=32"); \
- } \
- \
- if (!TARGET_FLOAT64) \
- builtin_define ("_MIPS_FPSET=16"); \
- else \
- builtin_define ("_MIPS_FPSET=32"); \
- \
- if (!TARGET_INT64) \
- builtin_define ("_MIPS_SZINT=32"); \
- else \
- builtin_define ("_MIPS_SZINT=64"); \
- \
- if (!ISA_MIPS1 && !ISA_MIPS2) \
- builtin_define ("_COMPILER_VERSION=601"); \
- \
- /* IRIX 6.5.18 and above provide many ISO C99 \
- features protected by the __c99 macro. \
- libstdc++ v3 needs them as well. */ \
- if ((!c_dialect_cxx () && flag_isoc99) \
- || c_dialect_cxx ()) \
- builtin_define ("__c99"); \
- \
- if (c_dialect_cxx ()) \
- { \
- builtin_define ("__EXTENSIONS__"); \
- builtin_define ("_SGI_SOURCE"); \
- } \
- \
- if (!flag_iso) \
- { \
- builtin_define ("__EXTENSIONS__"); \
- builtin_define ("_SGI_SOURCE"); \
- } \
-} while (0)
-
-/* IRIX 6 uses DWARF-2. */
-#define DWARF2_DEBUGGING_INFO 1
+/* MIPS specific debugging info */
#define MIPS_DEBUGGING_INFO 1
-#undef PREFERRED_DEBUGGING_TYPE
-#define PREFERRED_DEBUGGING_TYPE DWARF2_DEBUG
/* Force the generation of dwarf .debug_frame sections even if not
compiling -g. This guarantees that we can unwind the stack. */
-#define DWARF2_FRAME_INFO !TARGET_SGI_O32_AS
+#define DWARF2_FRAME_INFO 1
+
+/* The system unwinder in libexc requires a specific dwarf return address
+ column to work. */
+#undef DWARF_FRAME_RETURN_COLUMN
+#define DWARF_FRAME_RETURN_COLUMN (FP_REG_LAST + 1)
/* The size in bytes of a DWARF field indicating an offset or length
relative to a debug info section, specified to be 4 bytes in the DWARF-2
as DWARF_OFFSET_SIZE. */
#define DWARF_INITIAL_LENGTH_SIZE DWARF_OFFSET_SIZE
-/* There is no GNU as port for IRIX 6 yet, so we set MD_EXEC_PREFIX so that
- gcc will automatically find SGI as instead of searching the user's path.
- The latter can fail when building a cross compiler if the user has . in
- the path before /usr/bin, since then gcc will find and try to use the link
- to the cross assembler which can't possibly work. */
+/* MIPS assemblers don't have the usual .set foo,bar construct;
+ .set is used for assembler options instead. */
+#undef SET_ASM_OP
+#define ASM_OUTPUT_DEF(FILE, LABEL1, LABEL2) \
+ do \
+ { \
+ fputc ('\t', FILE); \
+ assemble_name (FILE, LABEL1); \
+ fputs (" = ", FILE); \
+ assemble_name (FILE, LABEL2); \
+ fputc ('\n', FILE); \
+ } \
+ while (0)
-#undef MD_EXEC_PREFIX
-#define MD_EXEC_PREFIX "/usr/bin/"
+#undef LOCAL_LABEL_PREFIX
+#define LOCAL_LABEL_PREFIX (TARGET_NEWABI ? "." : "$")
-/* We have no need for MD_STARTFILE_PREFIX. */
-#undef MD_STARTFILE_PREFIX
+#undef ASM_DECLARE_OBJECT_NAME
+#define ASM_DECLARE_OBJECT_NAME mips_declare_object_name
-#undef MACHINE_TYPE
-#define MACHINE_TYPE "SGI running IRIX 6.x"
-
-/* Stuff we need for IRIX 6 that isn't in IRIX 5. */
-
-/* The SGI assembler doesn't like labels before the .ent, so we must output
- the .ent and function name here, which is the normal place for it. */
-
-#undef ASM_DECLARE_FUNCTION_NAME
-#define ASM_DECLARE_FUNCTION_NAME(STREAM, NAME, DECL) \
- do { \
- if (mips_abi != ABI_32) \
- { \
- fputs ("\t.ent\t", STREAM); \
- assemble_name (STREAM, NAME); \
- fputs ("\n", STREAM); \
- assemble_name (STREAM, NAME); \
- fputs (":\n", STREAM); \
- } \
- } while (0)
-
-/* Likewise, the SGI assembler doesn't like labels after the .end, so we
- must output the .end here. */
-#undef ASM_DECLARE_FUNCTION_SIZE
-#define ASM_DECLARE_FUNCTION_SIZE(STREAM, NAME, DECL) \
- do { \
- if (mips_abi == ABI_32) \
- { \
- tree name_tree = get_identifier (NAME); \
- TREE_ASM_WRITTEN (name_tree) = 1; \
- } \
- else \
- { \
- fputs ("\t.end\t", STREAM); \
- assemble_name (STREAM, NAME); \
- fputs ("\n", STREAM); \
- } \
- } while (0)
-
-/* Tell function_prologue in mips.c that we have already output the .ent/.end
- pseudo-ops. */
-#undef FUNCTION_NAME_ALREADY_DECLARED
-#define FUNCTION_NAME_ALREADY_DECLARED (mips_abi != ABI_32)
-
-#undef SET_ASM_OP /* Has no equivalent. See ASM_OUTPUT_DEF below. */
-
-#if 0
-/* This is *NOT* how to equate one symbol to another symbol. The assembler
- '=' syntax just equates a name to a constant expression.
- See ASM_OUTPUT_WEAK_ALIAS. */
-
-#define ASM_OUTPUT_DEF(FILE,LABEL1,LABEL2) \
- do { fprintf ((FILE), "\t"); \
- assemble_name (FILE, LABEL1); \
- fprintf (FILE, " = "); \
- assemble_name (FILE, LABEL2); \
- fprintf (FILE, "\n"); \
- } while (0)
+#undef ASM_FINISH_DECLARE_OBJECT
+#define ASM_FINISH_DECLARE_OBJECT mips_finish_declare_object
+
+/* The native IRIX 6 linker does not support merging without a special
+ elspec(5) file. */
+#ifndef IRIX_USING_GNU_LD
+#undef HAVE_GAS_SHF_MERGE
+#define HAVE_GAS_SHF_MERGE 0
#endif
-/* Define the strings used for the special svr4 .type and .size directives. */
+/* Specify wchar_t types. */
+#undef WCHAR_TYPE
+#define WCHAR_TYPE (Pmode == DImode ? "int" : "long int")
-#define TYPE_ASM_OP "\t.type\t"
-#define SIZE_ASM_OP "\t.size\t"
+#undef WCHAR_TYPE_SIZE
+#define WCHAR_TYPE_SIZE INT_TYPE_SIZE
-/* IRIX assembler does not support the init_priority C++ attribute. */
-#undef SUPPORTS_INIT_PRIORITY
-#define SUPPORTS_INIT_PRIORITY 0
+/* Same for wint_t. */
+#undef WINT_TYPE
+#define WINT_TYPE (Pmode == DImode ? "int" : "long int")
-/* A linker error can empirically be avoided by removing duplicate
- library search directories. */
-#define LINK_ELIMINATE_DUPLICATE_LDIRECTORIES 1
+#undef WINT_TYPE_SIZE
+#define WINT_TYPE_SIZE 32
-#define POPSECTION_ASM_OP "\t.popsection"
-
-/* ??? If no mabi=X option give, but a mipsX option is, then should depend
- on the mipsX option. */
-/* If no mips[3,4] option given, give the appropriate default for mabi=X */
-#undef SUBTARGET_ASM_SPEC
-#define SUBTARGET_ASM_SPEC "%{!mabi*:-n32} %{mabi=32:-32} %{!mips*: %{!mabi*:-mips3} %{mabi=32:-mips2} %{mabi=n32|mabi=64:-mips3}}"
-
-/* Must pass -g0 to the assembler, otherwise it may overwrite our
- debug info with its own debug info. */
-/* Must pass -show instead of -v. */
-/* Must pass -G 0 to the assembler, otherwise we may get warnings about
- GOT overflow. */
-/* Must pass -w to the assembler to quiet warnings about .ent/.end for dwarf2. */
-#if ((TARGET_CPU_DEFAULT | TARGET_DEFAULT) & MASK_GAS) == 0
-/* We have a separate file for gas. */
-#undef SUBTARGET_MIPS_AS_ASM_SPEC
-#define SUBTARGET_MIPS_AS_ASM_SPEC "%{v:-show} -G 0 -w"
-
-#undef SUBTARGET_ASM_DEBUGGING_SPEC
-#define SUBTARGET_ASM_DEBUGGING_SPEC "-g0"
-
-/* The MIPS assembler occasionally misoptimizes. Since GCC should be
- doing scheduling anyhow, just turn off optimization in the assembler. */
-#undef SUBTARGET_ASM_OPTIMIZING_SPEC
-#define SUBTARGET_ASM_OPTIMIZING_SPEC "-O0"
-#endif
+/* C99 stdint.h types. */
+#define INT8_TYPE "signed char"
+#define INT16_TYPE "short int"
+#define INT32_TYPE "int"
+#define INT64_TYPE "long long int"
+#define UINT8_TYPE "unsigned char"
+#define UINT16_TYPE "short unsigned int"
+#define UINT32_TYPE "unsigned int"
+#define UINT64_TYPE "long long unsigned int"
+
+#define INT_LEAST8_TYPE "signed char"
+#define INT_LEAST16_TYPE "short int"
+#define INT_LEAST32_TYPE "int"
+#define INT_LEAST64_TYPE "long long int"
+#define UINT_LEAST8_TYPE "unsigned char"
+#define UINT_LEAST16_TYPE "short unsigned int"
+#define UINT_LEAST32_TYPE "unsigned int"
+#define UINT_LEAST64_TYPE "long long unsigned int"
+
+#define INT_FAST8_TYPE "signed char"
+#define INT_FAST16_TYPE "short int"
+#define INT_FAST32_TYPE "int"
+#define INT_FAST64_TYPE "long long int"
+#define UINT_FAST8_TYPE "unsigned char"
+#define UINT_FAST16_TYPE "short unsigned int"
+#define UINT_FAST32_TYPE "unsigned int"
+#define UINT_FAST64_TYPE "long long unsigned int"
+
+#define INTMAX_TYPE "long long int"
+#define UINTMAX_TYPE "long long unsigned int"
+
+#define INTPTR_TYPE "long int"
+#define UINTPTR_TYPE "long unsigned int"
+
+#define SIG_ATOMIC_TYPE "int"
+
+/* Plain char is unsigned in the SGI compiler. */
+#undef DEFAULT_SIGNED_CHAR
+#define DEFAULT_SIGNED_CHAR 0
+
+#define WORD_SWITCH_TAKES_ARG(STR) \
+ (DEFAULT_WORD_SWITCH_TAKES_ARG (STR) \
+ || strcmp (STR, "rpath") == 0)
+
+#define TARGET_OS_CPP_BUILTINS() \
+ do \
+ { \
+ builtin_define_std ("host_mips"); \
+ builtin_define_std ("sgi"); \
+ builtin_define_std ("unix"); \
+ builtin_define_std ("SYSTYPE_SVR4"); \
+ builtin_define ("_MODERN_C"); \
+ builtin_define ("_SVR4_SOURCE"); \
+ builtin_define ("__DSO__"); \
+ builtin_assert ("system=unix"); \
+ builtin_assert ("system=svr4"); \
+ builtin_assert ("machine=sgi"); \
+ \
+ if (!ISA_MIPS1 && !ISA_MIPS2) \
+ builtin_define ("_COMPILER_VERSION=601"); \
+ \
+ /* We must always define _LONGLONG, even when -ansi is \
+ used, because IRIX 5 system header files require it. \
+ This is OK, because gcc never warns when long long \
+ is used in system header files. \
+ \
+ An alternative would be to support the SGI builtin \
+ type __long_long. */ \
+ builtin_define ("_LONGLONG"); \
+ \
+ /* IRIX 6.5.18 and above provide many ISO C99 \
+ features protected by the __c99 macro. \
+ libstdc++ v3 needs them as well. */ \
+ if (TARGET_IRIX6) \
+ if (flag_isoc99 || c_dialect_cxx ()) \
+ builtin_define ("__c99"); \
+ \
+ /* The GNU C++ standard library requires that \
+ __EXTENSIONS__ and _SGI_SOURCE be defined on at \
+ least IRIX 6.2 and probably all IRIX 6 prior to 6.5. \
+ We don't need this on IRIX 6.5 itself, but it \
+ shouldn't hurt other than the namespace pollution. */ \
+ if (!flag_iso || (TARGET_IRIX6 && c_dialect_cxx ())) \
+ { \
+ builtin_define ("__EXTENSIONS__"); \
+ builtin_define ("_SGI_SOURCE"); \
+ } \
+ } \
+ while (0)
-/* The assembler now accepts .section pseudo-ops, but it does not allow
- one to change the section in the middle of a function, so we can't use
- the INIT_SECTION_ASM_OP code in crtstuff. But we can build up the ctor
- and dtor lists this way, so we use -init and -fini to invoke the
- do_global_* functions instead of running collect2. */
-
-#undef BSS_SECTION_ASM_OP
-#define BSS_SECTION_ASM_OP_32 "\t.data"
-#define BSS_SECTION_ASM_OP_64 "\t.section\t.bss"
-#define BSS_SECTION_ASM_OP \
- (mips_abi != ABI_32 && mips_abi != ABI_O64 \
- ? BSS_SECTION_ASM_OP_64 \
- : BSS_SECTION_ASM_OP_32)
-
-#undef READONLY_DATA_SECTION_ASM_OP
-#define READONLY_DATA_SECTION_ASM_OP_32 "\t.rdata"
-#define READONLY_DATA_SECTION_ASM_OP_64 "\t.section\t.rodata"
-#define READONLY_DATA_SECTION_ASM_OP \
- (mips_abi != ABI_32 && mips_abi != ABI_O64 \
- ? READONLY_DATA_SECTION_ASM_OP_64 \
- : READONLY_DATA_SECTION_ASM_OP_32)
-
-/* The default definition in defaults.h cannot cope with the runtime-variable
- definition of DWARF2_UNWIND_INFO above, so define here explicitly. */
-#define EH_FRAME_SECTION_NAME ".eh_frame"
-
-/* MUST_USE_SJLJ_EXCEPTIONS has the same problem. */
-#define MUST_USE_SJLJ_EXCEPTIONS (DWARF2_UNWIND_INFO == 0)
-
-/* The native IRIX 6 O32 assembler doesn't support named sections, while
- the N32/N64 assembler does. We need crt{begin, end}.o for the N32/N64
- ABIs, but there's no way to disable them for just one multilib.
- Therefore we provide dummy definitions to allow crtstuff.c to compile,
- but the resulting files are not used for the O32 ABI. */
-
-#if (defined _ABIO32 && _MIPS_SIM == _ABIO32) \
- && ((TARGET_CPU_DEFAULT | TARGET_DEFAULT) & MASK_GAS) == 0
-
-/* Provide dummy definitions. */
-#define CTORS_SECTION_ASM_OP ""
-#define DTORS_SECTION_ASM_OP ""
-
-/* Undef so JCR_SECTION_NAME isn't defined and __JCR_{LIST, END}__ are not
- used. */
-#undef TARGET_ASM_NAMED_SECTION
-
-/* Undef so __EH_FRAME_BEGIN__/__FRAME_END__ are not used. */
-#undef EH_FRAME_SECTION_NAME
-
-#endif /* _MIPS_SIM == _ABIO32 && !GAS */
-
-/* SGI assembler needs all sorts of extra help to do alignment properly. */
-#undef ASM_OUTPUT_ALIGN
-#define ASM_OUTPUT_ALIGN irix_asm_output_align
-
-#undef MAX_OFILE_ALIGNMENT
-#define MAX_OFILE_ALIGNMENT (32768*8)
-
-/* ??? SGI assembler may core dump when compiling with -g.
- Sometimes as succeeds, but then we get a linker error. (cmds.c in 072.sc)
- Getting rid of .file solves both problems. */
-#undef ASM_OUTPUT_FILENAME
-#define ASM_OUTPUT_FILENAME(STREAM, NUM_SOURCE_FILENAMES, NAME) \
-do \
- { \
- if (mips_abi == ABI_32) \
- fprintf (STREAM, "\t.file\t%d ", NUM_SOURCE_FILENAMES); \
- else \
- fprintf (STREAM, "\t#.file\t%d ", NUM_SOURCE_FILENAMES); \
- output_quoted_string (STREAM, NAME); \
- fputs ("\n", STREAM); \
- } \
-while (0)
-
-/* ??? SGI assembler gives warning whenever .lcomm is used. */
-#undef ASM_OUTPUT_ALIGNED_LOCAL
-#define ASM_OUTPUT_ALIGNED_LOCAL(STREAM, NAME, SIZE, ALIGN) \
-do \
- { \
- if (mips_abi != ABI_32 && mips_abi != ABI_O64) \
- { \
- bss_section (); \
- mips_declare_object (STREAM, NAME, "", ":\n", 0); \
- ASM_OUTPUT_ALIGN (STREAM, floor_log2 (ALIGN / BITS_PER_UNIT)); \
- ASM_OUTPUT_SKIP (STREAM, SIZE); \
- } \
- else \
- mips_declare_common_object (STREAM, NAME, "\n\t.lcomm\t", \
- SIZE, ALIGN, false); \
- } \
-while (0)
-
-/* A C statement (sans semicolon) to output to the stdio stream
- FILE the assembler definition of uninitialized global DECL named
- NAME whose size is SIZE bytes and alignment is ALIGN bytes.
- Try to use asm_output_aligned_bss to implement this macro. */
-
-#define ASM_OUTPUT_ALIGNED_BSS(FILE, DECL, NAME, SIZE, ALIGN) \
- asm_output_aligned_bss (FILE, DECL, NAME, SIZE, ALIGN)
+#undef SUBTARGET_CC1_SPEC
+#define SUBTARGET_CC1_SPEC "%{static: -mno-abicalls}"
-#undef ASM_DECLARE_OBJECT_NAME
-#define ASM_DECLARE_OBJECT_NAME mips_declare_object_name
+#undef SUBTARGET_CPP_SPEC
+#define SUBTARGET_CPP_SPEC "%{pthread:-D_REENTRANT}"
-#undef ASM_FINISH_DECLARE_OBJECT
-#define ASM_FINISH_DECLARE_OBJECT mips_finish_declare_object
+#undef INIT_SECTION_ASM_OP
+#define INIT_SECTION_ASM_OP "\t.section\t.gcc_init,\"ax\",@progbits"
-#undef LOCAL_LABEL_PREFIX
-#define LOCAL_LABEL_PREFIX ((mips_abi == ABI_32 || mips_abi == ABI_O64) \
- ? "$" : ".")
+#undef FINI_SECTION_ASM_OP
+#define FINI_SECTION_ASM_OP "\t.section\t.gcc_fini,\"ax\",@progbits"
+
+#ifdef IRIX_USING_GNU_LD
+#define IRIX_NO_UNRESOLVED ""
+#else
+#define IRIX_NO_UNRESOLVED "-no_unresolved"
+#endif
+
+#ifdef IRIX_USING_GNU_LD
+#define SUBTARGET_DONT_WARN_UNUSED_SPEC ""
+#define SUBTARGET_WARN_UNUSED_SPEC ""
+#else
+#define SUBTARGET_DONT_WARN_UNUSED_SPEC "-dont_warn_unused"
+#define SUBTARGET_WARN_UNUSED_SPEC "-warn_unused"
+#endif
/* Profiling is supported via libprof1.a not -lc_p as in IRIX 3. */
-/* ??? If no mabi=X option give, but a mipsX option is, then should depend
- on the mipsX option. */
-#undef IRIX_STARTFILE_SPEC
-#define IRIX_STARTFILE_SPEC \
+#undef STARTFILE_SPEC
+#define STARTFILE_SPEC \
"%{!shared: \
- %{mabi=32:%{pg:gcrt1.o%s} \
- %{!pg:%{p:mcrt1.o%s libprof1.a%s}%{!p:crt1.o%s}}} \
%{mabi=n32: \
%{mips4:%{pg:/usr/lib32/mips4/gcrt1.o%s} \
%{!pg:%{p:/usr/lib32/mips4/mcrt1.o%s /usr/lib32/mips4/libprof1.a%s} \
%{!p:/usr/lib64/mips4/crt1.o}}} \
%{!mips4:%{pg:/usr/lib64/mips3/gcrt1.o} \
%{!pg:%{p:/usr/lib64/mips3/mcrt1.o /usr/lib64/mips3/libprof1.a} \
- %{!p:/usr/lib64/mips3/crt1.o}}}} \
- %{!mabi*: \
- %{mips4:%{pg:/usr/lib32/mips4/gcrt1.o%s} \
- %{!pg:%{p:/usr/lib32/mips4/mcrt1.o%s /usr/lib32/mips4/libprof1.a%s} \
- %{!p:/usr/lib32/mips4/crt1.o%s}}} \
- %{!mips4:%{pg:/usr/lib32/mips3/gcrt1.o%s} \
- %{!pg:%{p:/usr/lib32/mips3/mcrt1.o%s /usr/lib32/mips3/libprof1.a%s} \
- %{!p:/usr/lib32/mips3/crt1.o%s}}}}}"
-
-#undef STARTFILE_SPEC
-#define STARTFILE_SPEC "%(irix_startfile_spec) crtbegin.o%s"
+ %{!p:/usr/lib64/mips3/crt1.o}}}}} \
+ irix-crti.o%s crtbegin.o%s"
#undef LIB_SPEC
#define LIB_SPEC \
-L/usr/lib32} \
%{mabi=64: %{mips4:-L/usr/lib64/mips4} %{!mips4:-L/usr/lib64/mips3} \
-L/usr/lib64} \
- %{!mabi*: %{mips4:-L/usr/lib32/mips4} %{!mips4:-L/usr/lib32/mips3} \
- -L/usr/lib32} \
- %{!shared: \
- -dont_warn_unused %{p:libprof1.a%s}%{pg:libprof1.a%s} -lc -warn_unused}"
+ %{!shared:" \
+ SUBTARGET_DONT_WARN_UNUSED_SPEC \
+ " %{pthread:-lpthread} %{p:libprof1.a%s}%{pg:libprof1.a%s} -lc " \
+ SUBTARGET_WARN_UNUSED_SPEC "}"
-/* Avoid getting two warnings for libgcc.a everytime we link. */
+/* Avoid getting two warnings for libgcc.a everytime we link. libgcc.a
+ contains references to copysignl, so link with libm to resolve them. */
#undef LIBGCC_SPEC
-#define LIBGCC_SPEC "-dont_warn_unused -lgcc -warn_unused"
+#define LIBGCC_SPEC \
+ SUBTARGET_DONT_WARN_UNUSED_SPEC " -lgcc -lm " SUBTARGET_WARN_UNUSED_SPEC
-/* ??? If no mabi=X option give, but a mipsX option is, then should depend
- on the mipsX option. */
-#undef IRIX_ENDFILE_SPEC
-#define IRIX_ENDFILE_SPEC \
- "%{!shared: \
- %{mabi=32:crtn.o%s}\
+#undef ENDFILE_SPEC
+#define ENDFILE_SPEC \
+ "crtend.o%s irix-crtn.o%s \
+ %{!shared: \
%{mabi=n32:%{mips4:/usr/lib32/mips4/crtn.o%s}\
%{!mips4:/usr/lib32/mips3/crtn.o%s}}\
%{mabi=64:%{mips4:/usr/lib64/mips4/crtn.o%s}\
- %{!mips4:/usr/lib64/mips3/crtn.o%s}}\
- %{!mabi*:%{mips4:/usr/lib32/mips4/crtn.o%s}\
- %{!mips4:/usr/lib32/mips3/crtn.o%s}}}"
-
-#undef ENDFILE_SPEC
-#define ENDFILE_SPEC "crtend.o%s %(irix_endfile_spec)"
+ %{!mips4:/usr/lib64/mips3/crtn.o%s}}}"
-/* ??? If no mabi=X option give, but a mipsX option is, then should depend
- on the mipsX option. */
+/* Generic part of the LINK_SPEC. */
#undef LINK_SPEC
#define LINK_SPEC "\
%{G*} %{EB} %{EL} %{mips1} %{mips2} %{mips3} %{mips4} \
%{bestGnum} %{shared} %{non_shared} \
-%{call_shared} %{no_archive} %{exact_version} %{w} \
-%{!shared: %{!non_shared: %{!call_shared:%{!r: -call_shared -no_unresolved}}}} \
-%{rpath} %{!mabi=32: -init __do_global_ctors -fini __do_global_dtors} \
-%{shared:-hidden_symbol __do_global_ctors,__do_global_ctors_1,__do_global_dtors} \
--_SYSTYPE_SVR4 -woff 131 \
-%{mabi=32: -32}%{mabi=n32: -n32}%{mabi=64: -64}%{!mabi*: -n32}"
-
-/* We need to disable collecting for the N32 and N64 ABIs. */
-#define COLLECT_PARSE_FLAG(FLAG) \
-do { \
- if (! strcmp (FLAG, "-n32") || ! strcmp (FLAG, "-64")) \
- do_collecting = 0; \
- if (! strcmp (FLAG, "-32") || ! strcmp (FLAG, "-o32")) \
- do_collecting = 1; \
-} while (0)
+%{call_shared} %{no_archive} %{exact_version} \
+%{!shared: \
+ %{!non_shared: %{!call_shared:%{!r: -call_shared " IRIX_NO_UNRESOLVED "}}}} \
+%{rpath} -init __gcc_init -fini __gcc_fini " IRIX_SUBTARGET_LINK_SPEC
+
+#ifdef IRIX_USING_GNU_LD
+#define IRIX_SUBTARGET_LINK_SPEC \
+ "%{mabi=n32: -melf32bmipn32}%{mabi=64: -melf64bmip}"
+#else
+ /* Explicitly hide crt symbols that would normally be marked with
+ a "hidden" visibility attribute.
+
+ We have traditionally disabled this attribute when using the
+ native linker because the native linker's visibility support is
+ not fully-compatible with the GNU linker's. In particular, the
+ native linker does not pull in archive objects purely to resolve
+ references to the object's hidden symbols, whereas the GNU
+ linker does.
+
+ The gcc build system currently hides symbols in some static
+ libraries (typically libgcov.a or libgcc.a) whenever visibility
+ attributes are supported. On targets with GNU semantics, this
+ makes sure that uses of libx.so symbols in one dynamic object are
+ not resolved to libx.a symbols in another dynamic object. But
+ on targets with IRIX semantics, hiding the symbols prevents the
+ static archive from working at all.
+
+ It would probably be better to enable visiblity attributes for
+ IRIX ld and disable the static archives versioning. It shouldn't
+ make anything worse, since libx.a symbols are global by default
+ anyway. However, no-one has volunteered to do this yet. */
+
+#define IRIX_SUBTARGET_LINK_SPEC \
+ "%{w} -_SYSTYPE_SVR4 -woff 131 \
+ %{shared:-hidden_symbol __dso_handle} \
+ %{mabi=n32: -n32}%{mabi=64: -64}%{!mabi*: -n32}"
+#endif
+
+/* A linker error can empirically be avoided by removing duplicate
+ library search directories. */
+#define LINK_ELIMINATE_DUPLICATE_LDIRECTORIES 1
+
+/* Add -g to mips.h default to avoid confusing gas with local symbols
+ generated from stabs info. */
+#undef NM_FLAGS
+#define NM_FLAGS "-Bng"
+
+/* The system header files are C++ aware. */
+/* ??? Unfortunately, most but not all of the headers are C++ aware.
+ Specifically, curses.h is not, and as a consequence, defining this
+ used to prevent libg++ building. This is no longer the case so
+ define it again to prevent other problems, e.g. with getopt in
+ unistd.h. We still need some way to fix just those files that need
+ fixing. */
+#define NO_IMPLICIT_EXTERN_C 1
+
+/* -G is incompatible with -KPIC which is the default, so only allow objects
+ in the small data section if the user explicitly asks for it. */
+#undef MIPS_DEFAULT_GVALUE
+#define MIPS_DEFAULT_GVALUE 0
#define MIPS_TFMODE_FORMAT mips_extended_format
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