/* Definitions of target machine for GNU compiler. IRIX version 6.
- Copyright (C) 1994, 1995, 1996, 1997, 1998, 2000, 2001, 2002, 2003
+ Copyright (C) 1994, 1995, 1996, 1997, 1998, 2000, 2001, 2002, 2003, 2004,
+ 2005
Free Software Foundation, Inc.
This file is part of GCC.
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. */
+the Free Software Foundation, 51 Franklin Street, Fifth Floor,
+Boston, MA 02110-1301, USA. */
-/* Let mips.c know we need the IRIX 6 functions. */
+/* Allow some special handling for IRIX 6. */
+#undef TARGET_IRIX6
#define TARGET_IRIX6 1
/* Default to -mabi=n32 and -mips3. */
#undef MULTILIB_DEFAULTS
#define MULTILIB_DEFAULTS { "mabi=n32" }
-/* IRIX 6 assembler does handle DWARF2 directives. Override setting in
- iris5.h file. */
-#undef DWARF2_UNWIND_INFO
-
-/* 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")
-
-#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. */
-
-#undef SUBTARGET_CC1_SPEC
-#define SUBTARGET_CC1_SPEC ""
-
-/* #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 ("_MIPS_SIM=_MIPS_SIM_ABI32"); \
- 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
-#define MIPS_DEBUGGING_INFO 1
-#undef PREFERRED_DEBUGGING_TYPE
-#define PREFERRED_DEBUGGING_TYPE DWARF2_DEBUG
+/* Force the default ABI onto the command line in order to make the specs
+ easier to write. Default to the mips2 ISA for the O32 ABI. */
+#define DRIVER_SELF_SPECS \
+ "%{!mabi=*: -mabi=n32}", \
+ "%{mabi=32: %{!mips*: %{!march*: -mips2}}}"
/* 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 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
- specification. The SGI/MIPS ABI defines it to be the same as PTR_SIZE. */
-#define DWARF_OFFSET_SIZE PTR_SIZE
-
-/* The size in bytes of the initial length field in a debug info
- section. The DWARF 3 (draft) specification defines this to be
- either 4 or 12 (with a 4-byte "escape" word when it's 12), but the
- SGI/MIPS ABI predates this standard and defines it to be the same
- 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. */
-
-#undef MD_EXEC_PREFIX
-#define MD_EXEC_PREFIX "/usr/bin/"
-
-/* We have no need for MD_STARTFILE_PREFIX. */
-#undef MD_STARTFILE_PREFIX
+/* 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)
#undef MACHINE_TYPE
#define MACHINE_TYPE "SGI running IRIX 6.x"
-/* IRIX 5 stuff that we don't need for IRIX 6. */
-/* ??? We do need this for the -mabi=32 switch though. */
-#undef ASM_OUTPUT_UNDEF_FUNCTION
-#undef ASM_DECLARE_FUNCTION_SIZE
-
-/* 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 { \
- 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. */
-#define ASM_DECLARE_FUNCTION_SIZE(STREAM, NAME, DECL) \
- do { \
- 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. */
-#define FUNCTION_NAME_ALREADY_DECLARED
-
-#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)
+#ifdef IRIX_USING_GNU_LD
+#define IRIX_SUBTARGET_LINK_SPEC \
+ "%{mabi=32: -melf32bsmip}%{mabi=n32: -melf32bmipn32}%{mabi=64: -melf64bmip}"
+#else
+#define IRIX_SUBTARGET_LINK_SPEC \
+ "%{w} -_SYSTYPE_SVR4 -woff 131 \
+ %{mabi=32: -32}%{mabi=n32: -n32}%{mabi=64: -64}%{!mabi*: -n32}"
#endif
-/* Define the strings used for the special svr4 .type and .size directives. */
-
-#define TYPE_ASM_OP "\t.type\t"
-#define SIZE_ASM_OP "\t.size\t"
-
-/* IRIX assembler does not support the init_priority C++ attribute. */
-#undef SUPPORTS_INIT_PRIORITY
-#define SUPPORTS_INIT_PRIORITY 0
-
-/* A linker error can empirically be avoided by removing duplicate
- library search directories. */
-#define LINK_ELIMINATE_DUPLICATE_LDIRECTORIES 1
-
-#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} %{!mips*: %{!mabi*:-mips3} %{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. */
-/* ??? We pass -w to disable all assembler warnings. The `label should be
- inside .ent/.end block' warning that we get for DWARF II debug info labels
- is particularly annoying. */
-#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"
-
-/* 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. */
-
-#define BSS_SECTION_ASM_OP "\t.section\t.bss"
-
-#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)
-
-/* Define functions to read the name and flags of the current section.
- They are used by iris6_asm_output_align. */
-
-#undef EXTRA_SECTION_FUNCTIONS
-#define EXTRA_SECTION_FUNCTIONS \
-const char * \
-current_section_name (void) \
-{ \
- switch (in_section) \
- { \
- case no_section: return NULL; \
- case in_text: return ".text"; \
- case in_data: return ".data"; \
- case in_bss: return ".bss"; \
- case in_readonly_data: \
- if (mips_abi != ABI_32 && mips_abi != ABI_O64) \
- return ".rodata"; \
- else \
- return ".rdata"; \
- case in_named: \
- return in_named_name; \
- } \
- abort (); \
-} \
- \
-unsigned int \
-current_section_flags (void) \
-{ \
- switch (in_section) \
- { \
- case no_section: return 0; \
- case in_text: return SECTION_CODE; \
- case in_data: return SECTION_WRITE; \
- case in_bss: return SECTION_WRITE | SECTION_BSS; \
- case in_readonly_data: return 0; \
- case in_named: return get_named_section_flags (in_named_name); \
- } \
- abort (); \
-}
-
-/* Switch into a generic section. */
-#undef TARGET_ASM_NAMED_SECTION
-#define TARGET_ASM_NAMED_SECTION iris6_asm_named_section
-
-/* SGI assembler needs all sorts of extra help to do alignment properly. */
-#undef ASM_OUTPUT_ALIGN
-#define ASM_OUTPUT_ALIGN iris6_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 \
- { \
- 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_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_object (STREAM, NAME, "\n\t.lcomm\t", ",%u\n", (int)(SIZE)); \
- } \
-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)
-
-/* Define the `__builtin_va_list' type for the ABI. On IRIX 6, this
- type is `char *'. */
-#undef BUILD_VA_LIST_TYPE
-#define BUILD_VA_LIST_TYPE(VALIST) \
- (VALIST) = build_pointer_type (char_type_node)
-
-#undef ASM_DECLARE_OBJECT_NAME
-#define ASM_DECLARE_OBJECT_NAME mips_declare_object_name
-
-#undef ASM_FINISH_DECLARE_OBJECT
-#define ASM_FINISH_DECLARE_OBJECT mips_finish_declare_object
-
-#undef LOCAL_LABEL_PREFIX
-#define LOCAL_LABEL_PREFIX ((mips_abi == ABI_32 || mips_abi == ABI_O64) \
- ? "$" : ".")
-
/* 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 STARTFILE_SPEC
#define STARTFILE_SPEC \
"%{!shared: \
%{!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}}}}} \
- crtbegin.o%s"
+ %{!p:/usr/lib64/mips3/crt1.o}}}}} \
+ irix-crti.o%s crtbegin.o%s"
+
+#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
#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 \
+ " %{p:libprof1.a%s}%{pg:libprof1.a%s} -lc " \
+ SUBTARGET_WARN_UNUSED_SPEC "}"
/* Avoid getting two warnings for libgcc.a everytime we link. */
#undef LIBGCC_SPEC
-#define LIBGCC_SPEC "-dont_warn_unused -lgcc -warn_unused"
+#define LIBGCC_SPEC \
+ SUBTARGET_DONT_WARN_UNUSED_SPEC " -lgcc " SUBTARGET_WARN_UNUSED_SPEC
-/* ??? If no mabi=X option give, but a mipsX option is, then should depend
- on the mipsX option. */
#undef ENDFILE_SPEC
#define ENDFILE_SPEC \
- "crtend.o%s \
+ "crtend.o%s irix-crtn.o%s \
%{!shared: \
%{mabi=32:crtn.o%s}\
%{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}}}"
-
-/* ??? If no mabi=X option give, but a mipsX option is, then should depend
- on the mipsX option. */
-#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: -call_shared -no_unresolved}}} \
-%{rpath} -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}"
+ %{!mips4:/usr/lib64/mips3/crtn.o%s}}}"
#define MIPS_TFMODE_FORMAT mips_extended_format
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