config.gcc (mips-sgi-irix6.5*): Set tmake_file to mips/t-irix6 t-slibgcc-dummy.

	gcc:
	* config.gcc (mips-sgi-irix6.5*): Set tmake_file to mips/t-irix6
	t-slibgcc-dummy.
	* config/mips/irix-crti.asm: Move to ../libgcc/config/mips/irix-crti.S.
	* config/mips/irix-crtn.asm: Move to ../libgcc/config/mips/irix-crtn.S.
	* config/mips/t-iris: Remove.
	* config/mips/t-irix6: New file.
	* config/mips/t-slibgcc-irix: Move to ../libgcc/config/mips.

	libgcc:
	* config.host (mips-sgi-irix[56]*): Restrict to mips-sgi-irix6.5*.
	Set tmake_file, extra_parts.
	* config/mips/irix-crti.S: Move from ../gcc/config/mips/irix-crti.asm.
	Remove O32 support.
	* config/mips/irix-crtn.S: Move from ../gcc/config/mips/irix-crtn.asm.
	Remove O32 support.
	* config/mips/t-irix6: New file.
	* config/mips/t-slibgcc-irix: New file.

From-SVN: r174608

4 files changed, 152 insertions, 0 deletions

diff --git a/libgcc/config/mips/irix-crti.S b/libgcc/config/mips/irix-crti.S
new file mode 100644
index 0000000..b9fc191
--- /dev/null
+++ b/libgcc/config/mips/irix-crti.S
@@ -0,0 +1,71 @@
+/* Copyright (C) 2004, 2008, 2011 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 3, or (at your option) any later
+version.
+
+GCC is distributed in the hope that it will be useful, but WITHOUT ANY
+WARRANTY; without even the implied warranty of MERCHANTABILITY or
+FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
+for more details.
+
+Under Section 7 of GPL version 3, you are granted additional
+permissions described in the GCC Runtime Library Exception, version
+3.1, as published by the Free Software Foundation.
+
+You should have received a copy of the GNU General Public License and
+a copy of the GCC Runtime Library Exception along with this program;
+see the files COPYING3 and COPYING.RUNTIME respectively.  If not, see
+<http://www.gnu.org/licenses/>.  */
+
+	.abicalls
+	.set	noreorder
+	.set	nomacro
+
+/* The GNU and SGI linkers differ in their implementation of -init and -fini.
+   With the GNU linker, there can only be a single -init option, and the
+   linker simply sets DT_INIT to that value.  gcc's initialization and
+   finalization code can go directly in .init, with the prologue and
+   epilogue of the main initialization routine being provided by external
+   object files (*crti.o and *crtn.o in this case).
+
+   The SGI linker instead accepts several -init options.  It will set DT_INIT
+   to a linker-created function (placed in .init) that calls each of the -init
+   functions in turn.  If there is any user code in .init, this linker-created
+   function will be placed after it.  Note that such user code is not treated
+   specially; it will only be called if the -init options arrange for it to
+   be called.
+
+   In theory, the SGI model should allow the crti, crtn and intermediate code
+   to go in .init, just like it can with the GNU linker.  However, doing this
+   seems to confuse the linker and triggers an internal error:
+
+      ld32: FATAL   2  : Internal: at ../../ld/mips_code.c mips_code_fixup()
+	 text section overflow!
+
+   (seen with MIPSpro 7.30).  We therefore put everything in a special
+   .gcc_init section instead.  */
+
+	.section .gcc_init,"ax",@progbits
+	.globl	__gcc_init
+__gcc_init:
+	daddiu	$sp,$sp,-16
+	sd	$31,0($sp)
+	sd	$28,8($sp)
+
+	.section .gcc_fini,"ax",@progbits
+	.globl	__gcc_fini
+__gcc_fini:
+	daddiu	$sp,$sp,-16
+	sd	$31,0($sp)
+	sd	$28,8($sp)
+
+/* This object will typically be included in the final link for both
+   shared libraries and executable, and we need to hide the symbols to
+   prevent possible symbol preemption warnings from the SGI linker.  */
+.hidden __gcc_init
+.hidden __gcc_fini
+
diff --git a/libgcc/config/mips/irix-crtn.S b/libgcc/config/mips/irix-crtn.S
new file mode 100644
index 0000000..8194cac
--- /dev/null
+++ b/libgcc/config/mips/irix-crtn.S
@@ -0,0 +1,38 @@
+/* Copyright (C) 2004, 2011 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 3, or (at your option) any later
+version.
+
+GCC is distributed in the hope that it will be useful, but WITHOUT ANY
+WARRANTY; without even the implied warranty of MERCHANTABILITY or
+FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
+for more details.
+
+Under Section 7 of GPL version 3, you are granted additional
+permissions described in the GCC Runtime Library Exception, version
+3.1, as published by the Free Software Foundation.
+
+You should have received a copy of the GNU General Public License and
+a copy of the GCC Runtime Library Exception along with this program;
+see the files COPYING3 and COPYING.RUNTIME respectively.  If not, see
+<http://www.gnu.org/licenses/>.  */
+
+	.abicalls
+	.set	noreorder
+	.set	nomacro
+
+	.section .gcc_init,"ax",@progbits
+	ld	$31,0($sp)
+	ld	$28,8($sp)
+	jr	$31
+	daddiu	$sp,$sp,16
+
+	.section .gcc_fini,"ax",@progbits
+	ld	$31,0($sp)
+	ld	$28,8($sp)
+	jr	$31
+	daddiu	$sp,$sp,16
diff --git a/libgcc/config/mips/t-irix6 b/libgcc/config/mips/t-irix6
new file mode 100644
index 0000000..77dd41d
--- /dev/null
+++ b/libgcc/config/mips/t-irix6
@@ -0,0 +1,36 @@
+# Copyright (C) 1995, 1996, 1997, 1998, 2000, 2001, 2002, 2003, 2004, 2005,
+# 2006, 2010, 2011 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 3, or (at your option)
+# any later version.
+#
+# GCC is distributed in the hope that it will be useful,
+# but WITHOUT ANY WARRANTY; without even the implied warranty of
+# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+# 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 COPYING3.  If not see
+# <http://www.gnu.org/licenses/>.
+
+irix-crti.o: $(srcdir)/config/mips/irix-crti.S
+	$(crt_compile) -c $<
+
+irix-crtn.o: $(srcdir)/config/mips/irix-crtn.S
+	$(crt_compile) -c $<
+
+TPBIT = tp-bit.c
+
+$(gcc_objdir)/tp-bit.c: $(gcc_srcdir)/config/fp-bit.c
+	echo '#ifdef __MIPSEL__'		 > $@
+	echo '# define FLOAT_BIT_ORDER_MISMATCH' >> $@
+	echo '#endif'				>> $@
+	echo '#define QUIET_NAN_NEGATED'	>> $@
+	echo '#if __LDBL_MANT_DIG__ == 106'	>> $@
+	echo '# define TFLOAT'			>> $@
+	cat $<					>> $@
+	echo '#endif'				>> $@
diff --git a/libgcc/config/mips/t-slibgcc-irix b/libgcc/config/mips/t-slibgcc-irix
new file mode 100644
index 0000000..6e0ac36
--- /dev/null
+++ b/libgcc/config/mips/t-slibgcc-irix
@@ -0,0 +1,7 @@
+# Build a shared libgcc library with the SGI linker.
+
+SHLIB_LDFLAGS = -Wl,-soname,$(SHLIB_SONAME) \
+	-Wl,-exports_file,$(SHLIB_MAP)
+
+SHLIB_MKMAP = $(gcc_srcdir)/mkmap-flat.awk
+SHLIB_MAPFILES = libgcc-std.ver