config.gcc: Removed mips-sgi-irix5*, mips-sgi-irix6.[0-4]* from list of obsolete configurations.

	gcc:
	* config.gcc: Removed mips-sgi-irix5*, mips-sgi-irix6.[0-4]* from
	list of obsolete configurations.
	Disabled check for obsolete configurations.
	(mips-sgi-irix[56]*): Restrict to mips-sgi-irix6.5*.
	Removed support for previous versions.
	* config/mips/iris.h: Removed.
	* config/mips/iris5.h: Removed.
	* config/mips/iris6.h: Merged old iris.h contents.
	(TARGET_IRIX): Removed.
	(DRIVER_SELF_SPECS): Removed mabi=32.
	(IDENT_ASM_OP): Removed undef.
	(STARTFILE_SPEC): Removed mabi=32.
	(ENDFILE_SPEC): Likewise.
	(IRIX_SUBTARGET_LINK_SPEC): Likewise.
	(MACHINE_TYPE): Update for IRIX 6.5.
	* config/mips/mips.c (mips_build_builtin_va_list): Replaced
	TARGET_IRIX by TARGET_IRIX6.
	(mips_file_start): Likewise.
	(mips_output_external): Remove IRIX 5/6 O32 support.
	(mips_output_function_prologue): Likewise.
	* config/mips/mips.h (TARGET_GPWORD): Replaced TARGET_IRIX by
	TARGET_IRIX6.
	(TARGET_CPU_CPP_BUILTINS): Likewise.
	(TARGET_IRIX): Removed.
	* config/mips/t-iris6 (MULTILIB_OPTIONS): Removed mabi=32.
	(MULTILIB_DIRNAMES): Removed 32.
	(MULTILIB_OSDIRNAMES): Removed ../lib.
	* doc/install.texi (Prerequisites): Don't reference IRIX before
	6.5.
	(Specific, mips-sgi-irix5): Document removal.
	(Specific, mips-sgi-irix6): Document IRIX 6.[0-4] and O32 ABI
	removal.
	Remove references to older IRIX 6 releases and the O32 ABI.

	gcc/ada:
	* gcc-interface/Makefile.in: Removed mips-sgi-irix5* support.

	libstdc++-v3:
	* configure.host: Removed irix[1-6], irix[1-5].*, irix6.[0-4]*
	support.
	* config/os/irix/irix5.2: Removed.

From-SVN: r159121

1 files changed, 242 insertions, 42 deletions

diff --git a/gcc/config/mips/iris6.h b/gcc/config/mips/iris6.h
index 026e364..784e947 100644
--- a/gcc/config/mips/iris6.h
+++ b/gcc/config/mips/iris6.h
@@ -1,6 +1,6 @@
-/* Definitions of target machine for GNU compiler.  IRIX version 6.
-   Copyright (C) 1994, 1995, 1996, 1997, 1998, 2000, 2001, 2002, 2003, 2004,
-   2005, 2006, 2007, 2008, 2010
+/* 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.
@@ -19,23 +19,28 @@ You should have received a copy of the GNU General Public License
 along with GCC; see the file COPYING3.  If not see
 <http://www.gnu.org/licenses/>.  */
 
-/* Allow some special handling for IRIX 6.  */
+/* 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" }
 
 /* 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.  */
+   easier to write.  */
 #undef DRIVER_SELF_SPECS
 #define DRIVER_SELF_SPECS 			\
   "%{!mabi=*: -mabi=n32}", 			\
-  "%{mabi=32: %{!mips*: %{!march*: -mips2}}}", 	\
   /* Configuration-independent MIPS rules.  */	\
   BASE_DRIVER_SELF_SPECS
 
+/* MIPS specific debugging info */
+#define MIPS_DEBUGGING_INFO 1
+
 /* 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
@@ -45,48 +50,182 @@ along with GCC; see the file COPYING3.  If not see
 #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"
+/* 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
+
+/* 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 LOCAL_LABEL_PREFIX
+#define LOCAL_LABEL_PREFIX (TARGET_NEWABI ? "." : "$")
+
+#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
+
+/* 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
+
+/* Specify wchar_t types.  */
+#undef WCHAR_TYPE
+#define WCHAR_TYPE (Pmode == DImode ? "int" : "long int")
+
+#undef WCHAR_TYPE_SIZE
+#define WCHAR_TYPE_SIZE INT_TYPE_SIZE
+
+/* Same for wint_t.  */
+#undef WINT_TYPE
+#define WINT_TYPE (Pmode == DImode ? "int" : "long int")
+
+#undef WINT_TYPE_SIZE
+#define WINT_TYPE_SIZE 32
+
+/* 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)
+
+#undef SUBTARGET_CC1_SPEC
+#define SUBTARGET_CC1_SPEC "%{static: -mno-abicalls}"
+
+#undef SUBTARGET_CPP_SPEC
+#define SUBTARGET_CPP_SPEC "%{pthread:-D_REENTRANT}"
+
+#undef INIT_SECTION_ASM_OP
+#define INIT_SECTION_ASM_OP "\t.section\t.gcc_init,\"ax\",@progbits"
+
+#undef FINI_SECTION_ASM_OP
+#define FINI_SECTION_ASM_OP "\t.section\t.gcc_fini,\"ax\",@progbits"
 
 #ifdef IRIX_USING_GNU_LD
-#define IRIX_SUBTARGET_LINK_SPEC \
-  "%{mabi=32: -melf32bsmip}%{mabi=n32: -melf32bmipn32}%{mabi=64: -melf64bmip}"
+#define IRIX_NO_UNRESOLVED ""
 #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_NO_UNRESOLVED "-no_unresolved"
+#endif
 
-#define IRIX_SUBTARGET_LINK_SPEC \
-  "%{w} -_SYSTYPE_SVR4 -woff 131 \
-   %{shared:-hidden_symbol __dso_handle} \
-   %{mabi=32: -32}%{mabi=n32: -n32}%{mabi=64: -64}%{!mabi*: -n32}"
+#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.  */
 #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} \
@@ -124,14 +263,75 @@ along with GCC; see the file COPYING3.  If not see
 #define ENDFILE_SPEC \
   "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}}}"
 
-#define MIPS_TFMODE_FORMAT mips_extended_format
+/* 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} \
+%{!shared: \
+  %{!non_shared: %{!call_shared:%{!r: -call_shared " IRIX_NO_UNRESOLVED "}}}} \
+%{rpath} -init __gcc_init -fini __gcc_fini " IRIX_SUBTARGET_LINK_SPEC
 
-#undef SUBTARGET_CPP_SPEC
-#define SUBTARGET_CPP_SPEC "%{pthread:-D_REENTRANT}"
+#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