diff --git a/gcc/config.gcc b/gcc/config.gcc
--- a/gcc/config.gcc
+++ b/gcc/config.gcc
@@ -1328,16 +1328,13 @@ i[34567]86-*-solaris2*)
 	if test x$gas = xyes; then
 		tm_file="${tm_file} i386/sol2-gas.h"
 	fi
-	tmake_file="${tmake_file} t-sol2 t-svr4"
+	tmake_file="${tmake_file} t-sol2 t-slibgcc-dummy"
 	c_target_objs="${c_target_objs} sol2-c.o"
 	cxx_target_objs="${cxx_target_objs} sol2-c.o"
 	extra_objs="sol2.o"
 	tm_p_file="${tm_p_file} sol2-protos.h"
 	if test x$gnu_ld = xyes; then
-		tmake_file="$tmake_file t-slibgcc-elf-ver"
 		tm_defines="${tm_defines} TARGET_GNU_LD=1"
-	else
-		tmake_file="$tmake_file t-slibgcc-sld"
 	fi
 	if test x$gas = xyes; then
 		tm_file="usegas.h ${tm_file}"
@@ -1348,9 +1345,6 @@ i[34567]86-*-solaris2*)
 		tm_file="${tm_file} i386/x86-64.h i386/sol2-10.h"
 		tm_defines="${tm_defines} TARGET_BI_ARCH=1"
 		tmake_file="$tmake_file i386/t-sol2-10"
-		# i386/t-crtstuff only affects libgcc.  Its inclusion
-		# depends on a runtime test and is thus performed in
-		# libgcc/configure.ac instead.
 		need_64bit_hwint=yes
 		need_64bit_isa=yes
 		use_gcc_stdint=wrap
@@ -2476,12 +2470,7 @@ sparc*-*-solaris2*)
 		tm_file="${tm_file} sol2-gld.h sparc/sol2-gld-bi.h"
 	fi
 	tm_file="${tm_file} tm-dwarf2.h"
-	tmake_file="t-sol2 sparc/t-sol2 sparc/t-sol2-64 sparc/t-crtfm"
-	if test x$gnu_ld = xyes; then
-		tmake_file="$tmake_file t-slibgcc-elf-ver"
-	else
-		tmake_file="$tmake_file t-slibgcc-sld"
-	fi
+	tmake_file="t-sol2 t-slibgcc-dummy sparc/t-sol2-64"
 	if test x$gas = xyes; then
 		tm_file="usegas.h ${tm_file}"
 	fi
@@ -2489,7 +2478,6 @@ sparc*-*-solaris2*)
 	cxx_target_objs="sol2-c.o"
 	extra_objs="sol2.o"
 	tm_p_file="${tm_p_file} sol2-protos.h"
-	extra_parts="crt1.o crti.o crtn.o gcrt1.o gmon.o crtbegin.o crtend.o"
 	case ${enable_threads}:${have_pthread_h}:${have_thread_h} in
 	  "":yes:* | yes:yes:* )
 		thread_file=posix
diff --git a/gcc/config/i386/t-sol2-10 b/gcc/config/i386/t-sol2-10
--- a/gcc/config/i386/t-sol2-10
+++ b/gcc/config/i386/t-sol2-10
@@ -1,4 +1,4 @@
-# Copyright (C) 2004 Free Software Foundation, Inc.
+# Copyright (C) 2004, 2011 Free Software Foundation, Inc.
 #
 # This file is part of GCC.
 #
@@ -19,11 +19,3 @@
 MULTILIB_OPTIONS = m32/m64
 MULTILIB_DIRNAMES = 32 amd64
 MULTILIB_OSDIRNAMES = . amd64
-
-LIBGCC = stmp-multilib
-INSTALL_LIBGCC = install-multilib
-
-# GCC contains i386 assembler sources for some of the startfiles
-# which aren't appropriate for amd64.  Just use the installed
-# versions of: crt1.o crti.o crtn.o gcrt1.o
-EXTRA_MULTILIB_PARTS=gmon.o crtbegin.o crtend.o
diff --git a/gcc/config/sparc/t-sol2-64 b/gcc/config/sparc/t-sol2-64
--- a/gcc/config/sparc/t-sol2-64
+++ b/gcc/config/sparc/t-sol2-64
@@ -2,9 +2,3 @@ MULTILIB_OPTIONS = m32/m64
 MULTILIB_DIRNAMES = sparcv8plus sparcv9
 MULTILIB_MATCHES =
 MULTILIB_OSDIRNAMES = . sparcv9
-
-LIBGCC = stmp-multilib
-INSTALL_LIBGCC = install-multilib
-
-EXTRA_MULTILIB_PARTS=crtbegin.o crtend.o gmon.o crt1.o crti.o crtn.o gcrt1.o \
-	crtfastmath.o
diff --git a/gcc/config/t-slibgcc-dummy b/gcc/config/t-slibgcc-dummy
new file mode 100644
--- /dev/null
+++ b/gcc/config/t-slibgcc-dummy
@@ -0,0 +1,3 @@
+# SHLIB_LINK must be non-empty so ENABLE_SHARED_LIBGCC is defined correctly
+# in DRIVER_DEFINES if libgcc configuration has been moved to toplevel.
+SHLIB_LINK = dummy
diff --git a/gcc/config/t-sol2 b/gcc/config/t-sol2
--- a/gcc/config/t-sol2
+++ b/gcc/config/t-sol2
@@ -29,6 +29,9 @@ sol2.o: $(srcdir)/config/sol2.c $(CONFIG
 	$(COMPILER) -c $(ALL_COMPILERFLAGS) $(ALL_CPPFLAGS) $(INCLUDES) \
 	  $(srcdir)/config/sol2.c
 
+# This is required by gcc/ada/gcc-interface/Makefile.in.
+TARGET_LIBGCC2_CFLAGS = -fPIC
+
 # Use unwind-dw2-fde-glibc.c.  Unless linker support and dl_iterate_phdr
 # are present, automatically falls back to unwind-dw2-fde.c.
 LIB2ADDEH = $(srcdir)/unwind-dw2.c $(srcdir)/unwind-dw2-fde-glibc.c \
diff --git a/libgcc/Makefile.in b/libgcc/Makefile.in
--- a/libgcc/Makefile.in
+++ b/libgcc/Makefile.in
@@ -1,6 +1,6 @@
 # Makefile.in
 
-# Copyright (C) 2005, 2006, 2009, 2010 Free Software Foundation
+# Copyright (C) 2005, 2006, 2009, 2010, 2011 Free Software Foundation
 #
 # This file is part of GCC.
 #
@@ -35,6 +35,7 @@ shlib_slibdir = @slibdir@
 
 SHELL = @SHELL@
 
+cpu_type = @cpu_type@
 enable_shared = @enable_shared@
 decimal_float = @decimal_float@
 enable_decimal_float = @enable_decimal_float@
diff --git a/libgcc/config.host b/libgcc/config.host
--- a/libgcc/config.host
+++ b/libgcc/config.host
@@ -1,6 +1,6 @@
 # libgcc host-specific configuration file.
 # Copyright 1997, 1998, 1999, 2000, 2001, 2002, 2003, 2004, 2005, 2006, 2007,
-# 2008, 2009, 2010 Free Software Foundation, Inc.
+# 2008, 2009, 2010, 2011 Free Software Foundation, Inc.
 
 #This file is part of GCC.
 
@@ -168,6 +168,26 @@ case ${host} in
   ;;
 *-*-rtems*)
   ;;
+*-*-solaris2*)
+  tmake_file="$tmake_file t-sol2 t-slibgcc t-slibgcc-elf-ver"
+  if test $with_gnu_ld = yes; then
+    tmake_file="$tmake_file t-slibgcc-gld"
+  else
+    tmake_file="$tmake_file t-slibgcc-sld"
+  fi
+  # Add cpu-specific t-sol2 after t-slibgcc-* so it can augment SHLIB_MAPFILES.
+  tmake_file="$tmake_file $cpu_type/t-sol2"
+  extra_parts="gmon.o crtbegin.o crtend.o"
+  case ${host} in
+    *-*-solaris2.1[0-9]*)
+      # Solaris 10+ provides crt1.o, crti.o, crtn.o, and gcrt1.o as
+      # part of the base system.
+      ;;
+    *)
+      extra_parts="$extra_parts crt1.o crti.o crtn.o gcrt1.o"
+      ;;
+  esac
+  ;;
 *-*-vxworks*)
   ;;
 *-*-elf)
@@ -311,17 +331,6 @@ i[34567]86-*-nto-qnx*)
 i[34567]86-*-rtems*)
 	;;
 i[34567]86-*-solaris2*)
-	tmake_file="${tmake_file} i386/t-sol2"
-	case ${host} in
-	*-*-solaris2.1[0-9]*)
-		# Solaris 2.10 provides crt1.o, crti.o, crtn.o, and gcrt1.o as
-		# part of the base system.
-		extra_parts="gmon.o crtbegin.o crtend.o"
-		;;
-	*)
-		extra_parts="crt1.o crti.o crtn.o gcrt1.o gmon.o crtbegin.o crtend.o"
-		;;
-	esac
 	;;
 i[4567]86-wrs-vxworks|i[4567]86-wrs-vxworksae)
 	;;
@@ -522,13 +531,13 @@ sparc-*-elf*)
 	;;
 sparc-*-linux*)		# SPARC's running GNU/Linux, libc6
 	extra_parts="$extra_parts crtfastmath.o"
-	tmake_file="${tmake_file} sparc/t-crtfm"
+	tmake_file="${tmake_file} t-crtfm"
 	;;
 sparc-*-rtems* | sparc64-*-rtems* )
 	;;
-sparc64-*-solaris2* | sparcv9-*-solaris2*)
-	;;
-sparc-*-solaris2*)
+sparc*-*-solaris2*)
+	tmake_file="$tmake_file t-crtfm"
+	extra_parts="$extra_parts crtfastmath.o"
 	;;
 sparc64-*-elf*)
 	;;
@@ -538,7 +547,7 @@ sparc64-*-freebsd*|ultrasparc-*-freebsd*
 	;;
 sparc64-*-linux*)		# 64-bit SPARC's running GNU/Linux
 	extra_parts="$extra_parts crtfastmath.o"
-	tmake_file="${tmake_file} sparc/t-crtfm"
+	tmake_file="${tmake_file} t-crtfm"
 	;;
 sparc64-*-netbsd*)
 	;;
diff --git a/gcc/config/sparc/gmon-sol2.c b/libgcc/config/gmon-sol2.c
rename from gcc/config/sparc/gmon-sol2.c
rename to libgcc/config/gmon-sol2.c
--- a/gcc/config/sparc/gmon-sol2.c
+++ b/libgcc/config/gmon-sol2.c
@@ -28,32 +28,67 @@
  * SUCH DAMAGE.
  */
 
+/* FIXME: Check comment.  */
 /* Mangled into a form that works on SPARC Solaris 2 by Mark Eichin
  * for Cygnus Support, July 1992.
+ *
+ * This is a modified gmon.c by J.W.Hawtin <oolon@ankh.org>,
+ * 14/8/96 based on the original gmon.c in GCC and the hacked version
+ * solaris 2 sparc version (config/sparc/gmon-sol.c) by Mark Eichin. To do
+ * process profiling on solaris 2.X X86
+ *
+ * It must be used in conjunction with sol2-gc1.asm, which is used to start
+ * and stop process monitoring.
+ *
+ * Differences.
+ *
+ * On Solaris 2 _mcount is called by library functions not mcount, so support
+ * has been added for both.
+ *
+ * Also the prototype for profil() is different
+ *
+ * Solaris 2 does not seem to have char *minbrk whcih allows the setting of
+ * the minimum SBRK region so this code has been removed and lets pray malloc
+ * does not mess it up.
+ *
+ * Notes
+ *
+ * This code could easily be integrated with the original gmon.c and perhaps
+ * should be.
  */
-
 #include "tconfig.h"
 #include "tsystem.h"
 #include <fcntl.h> /* for creat() */
 
-#if 0
-#include "sparc/gmon.h"
-#else
+#ifdef DEBUG
+#include <stdio.h>
+#endif
+
+static void moncontrol (int);
+extern void monstartup (char *, char *);
+extern void _mcleanup (void);
+
 struct phdr {
   char *lpc;
   char *hpc;
   int ncnt;
 };
+
+
 #define HISTFRACTION 2
 #define HISTCOUNTER unsigned short
 #define HASHFRACTION 1
 #define ARCDENSITY 2
 #define MINARCS 50
+#define BASEADDRESS 0x8000000 /* On Solaris 2 X86 all executables start here
+				 and not at 0 */ 
+
 struct tostruct {
   char *selfpc;
   long count;
   unsigned short link;
 };
+
 struct rawarc {
     unsigned long       raw_frompc;
     unsigned long       raw_selfpc;
@@ -62,10 +97,14 @@ struct rawarc {
 #define ROUNDDOWN(x,y)  (((x)/(y))*(y))
 #define ROUNDUP(x,y)    ((((x)+(y)-1)/(y))*(y))
 
-#endif
-
 /* extern mcount() asm ("mcount"); */
 /*extern*/ char *minbrk /* asm ("minbrk") */;
+typedef __SIZE_TYPE__ size_t;
+typedef __PTRDIFF_TYPE__ intptr_t;
+
+extern int errno;
+
+extern void *sbrk (intptr_t);
 
     /*
      *	froms is actually a bunch of unsigned shorts indexing tos
@@ -76,7 +115,7 @@ static struct tostruct	*tos = 0;
 static long		tolimit = 0;
 static char		*s_lowpc = 0;
 static char		*s_highpc = 0;
-static unsigned long	s_textsize = 0;
+static size_t		s_textsize = 0;
 
 static int	ssiz;
 static char	*sbuf;
@@ -92,23 +131,23 @@ extern void _mcleanup (void);
 
 void monstartup(char *lowpc, char *highpc)
 {
-    int			monsize;
+    size_t		monsize;
     char		*buffer;
-    register int	o;
+    register size_t	o;
 
 	/*
 	 *	round lowpc and highpc to multiples of the density we're using
 	 *	so the rest of the scaling (here and in gprof) stays in ints.
 	 */
     lowpc = (char *)
-	    ROUNDDOWN((unsigned long)lowpc, HISTFRACTION*sizeof(HISTCOUNTER));
+	    ROUNDDOWN((size_t)lowpc, HISTFRACTION*sizeof(HISTCOUNTER));
     s_lowpc = lowpc;
     highpc = (char *)
-	    ROUNDUP((unsigned long)highpc, HISTFRACTION*sizeof(HISTCOUNTER));
+	    ROUNDUP((size_t)highpc, HISTFRACTION*sizeof(HISTCOUNTER));
     s_highpc = highpc;
     s_textsize = highpc - lowpc;
     monsize = (s_textsize / HISTFRACTION) + sizeof(struct phdr);
-    buffer = sbrk( monsize );
+    buffer = (char *) sbrk( monsize );
     if ( buffer == (char *) -1 ) {
 	write( 2 , MSG , sizeof(MSG) );
 	return;
@@ -206,8 +245,9 @@ _mcleanup(void)
 	return;
     }
 #   ifdef DEBUG
-	fprintf( stderr , "[mcleanup] sbuf 0x%x ssiz %d\n" , sbuf , ssiz );
+	fprintf( stderr , "[mcleanup] sbuf %#x ssiz %d\n" , sbuf , ssiz );
 #   endif /* DEBUG */
+
     write( fd , sbuf , ssiz );
     endfrom = s_textsize / (HASHFRACTION * sizeof(*froms));
     for ( fromindex = 0 ; fromindex < endfrom ; fromindex++ ) {
@@ -218,7 +258,7 @@ _mcleanup(void)
 	for (toindex=froms[fromindex]; toindex!=0; toindex=tos[toindex].link) {
 #	    ifdef DEBUG
 		fprintf( stderr ,
-			"[mcleanup] frompc 0x%x selfpc 0x%x count %d\n" ,
+			"[mcleanup] frompc %#x selfpc %#x count %d\n" ,
 			frompc , tos[toindex].selfpc , tos[toindex].count );
 #	    endif /* DEBUG */
 	    rawarc.raw_frompc = (unsigned long) frompc;
@@ -230,6 +270,7 @@ _mcleanup(void)
     close( fd );
 }
 
+#ifdef __sparc__
 /*
  * The SPARC stack frame is only held together by the frame pointers
  * in the register windows. According to the SVR4 SPARC ABI
@@ -273,25 +314,99 @@ static void internal_mcount (char *, uns
 asm(".global _mcount; _mcount: mov %i7,%o1; mov %o7,%o0;b,a internal_mcount");
 /* This is for compatibility with old versions of gcc which used mcount.  */
 asm(".global mcount; mcount: mov %i7,%o1; mov %o7,%o0;b,a internal_mcount");
+#elif defined __x86_64__
+extern void internal_mcount (char *, unsigned short *);
 
-static void internal_mcount(char *selfpc, unsigned short *frompcindex)
+/* See GLIBC for additional information about this technique.  */
+asm(".globl _mcount\n" 
+    "\t.type\t_mcount, @function\n"
+    "_mcount:\n"
+    /* The compiler calls _mcount after the prologue, and does not
+       save any of the registers.  Therefore we must preserve all
+       seven registers which may contain function arguments.  */
+    "\tsubq\t$0x38,%rsp\n"
+    "\tmovq\t%rax,(%rsp)\n"
+    "\tmovq\t%rcx,0x08(%rsp)\n"
+    "\tmovq\t%rdx,0x10(%rsp)\n"
+    "\tmovq\t%rsi,0x18(%rsp)\n"
+    "\tmovq\t%rdi,0x20(%rsp)\n"
+    "\tmovq\t%r8,0x28(%rsp)\n"
+    "\tmovq\t%r9,0x30(%rsp)\n"
+    /* Get SELFPC (pushed by the call to this function) and
+       FROMPCINDEX (via the frame pointer.  */
+    "\tmovq\t0x38(%rsp),%rdi\n"
+    "\tmovq\t0x8(%rbp),%rsi\n"
+    "\tcall\tinternal_mcount\n"
+    /* Restore the saved registers.  */
+    "\tmovq\t0x30(%rsp),%r9\n"
+    "\tmovq\t0x28(%rsp),%r8\n"
+    "\tmovq\t0x20(%rsp),%rdi\n"
+    "\tmovq\t0x18(%rsp),%rsi\n"
+    "\tmovq\t0x10(%rsp),%rdx\n"
+    "\tmovq\t0x08(%rsp),%rcx\n"
+    "\tmovq\t(%rsp),%rax\n"
+    "\taddq\t$0x38,%rsp\n"
+    "\tretq\n"
+    );
+#else
+extern void internal_mcount (void);
+
+ /* Solaris 2 libraries use _mcount.  */
+asm(".globl _mcount; _mcount: jmp internal_mcount");
+ /* This is for compatibility with old versions of gcc which used mcount.  */
+asm(".globl mcount; mcount: jmp internal_mcount");
+#endif
+
+#ifdef __sparc__
+static
+#endif
+void
+internal_mcount (
+#if defined __sparc__ || defined __x86_64__
+		 char *selfpc,
+		 unsigned short *frompcindex
+#else
+		 void
+#endif
+		 )
 {
+#if !defined __sparc__ && !defined __x86_64__
+	register char			*selfpc;
+	register unsigned short		*frompcindex;
+#endif
 	register struct tostruct	*top;
 	register struct tostruct	*prevtop;
 	register long			toindex;
 	static char already_setup;
 
+#if !defined __sparc__ && !defined __x86_64__
 	/*
 	 *	find the return address for mcount,
 	 *	and the return address for mcount's caller.
 	 */
 
+	/* selfpc = pc pushed by mcount call.
+	   This identifies the function that was just entered.  */
+	selfpc = (void *) __builtin_return_address (0);
+	/* frompcindex = pc in preceding frame.
+	   This identifies the caller of the function just entered.  */
+	frompcindex = (void *) __builtin_return_address (1);
+#endif
+
 	if(!already_setup) {
           extern char etext[];
+#ifdef __sparc__
 	  extern char _start[];
 	  extern char _init[];
+#endif
 	  already_setup = 1;
+#if defined __sparc__
 	  monstartup(_start < _init ? _start : _init, etext);
+#elif defined __x86_64__
+	  monstartup(0, etext);
+#else
+	  monstartup((char*)0x08040000, etext);
+#endif
 #ifdef USE_ONEXIT
 	  on_exit(_mcleanup, 0);
 #else
@@ -410,7 +525,8 @@ static void moncontrol(int mode)
 	/* start */
 	profil((unsigned short *)(sbuf + sizeof(struct phdr)),
 	       ssiz - sizeof(struct phdr),
-	       (long)s_lowpc, s_scale);
+	       (size_t)s_lowpc, s_scale);
+
 	profiling = 0;
     } else {
 	/* stop */
diff --git a/gcc/config/i386/sol2-c1.asm b/libgcc/config/i386/sol2-c1.S
rename from gcc/config/i386/sol2-c1.asm
rename to libgcc/config/i386/sol2-c1.S
diff --git a/gcc/config/i386/sol2-ci.asm b/libgcc/config/i386/sol2-ci.S
rename from gcc/config/i386/sol2-ci.asm
rename to libgcc/config/i386/sol2-ci.S
diff --git a/gcc/config/i386/sol2-cn.asm b/libgcc/config/i386/sol2-cn.S
rename from gcc/config/i386/sol2-cn.asm
rename to libgcc/config/i386/sol2-cn.S
diff --git a/gcc/config/i386/sol2-gc1.asm b/libgcc/config/i386/sol2-gc1.S
rename from gcc/config/i386/sol2-gc1.asm
rename to libgcc/config/i386/sol2-gc1.S
diff --git a/libgcc/config/i386/t-crtfm b/libgcc/config/i386/t-crtfm
--- a/libgcc/config/i386/t-crtfm
+++ b/libgcc/config/i386/t-crtfm
@@ -1,5 +1,4 @@
 # This is an endfile, Use -minline-all-stringops to ensure
 # that __builtin_memset doesn't refer to the lib function memset().
 crtfastmath.o: $(gcc_srcdir)/config/i386/crtfastmath.c
-	$(gcc_compile) -msse -minline-all-stringops -c \
-	$(gcc_srcdir)/config/i386/crtfastmath.c
+	$(gcc_compile) -msse -minline-all-stringops -c $<
diff --git a/libgcc/config/i386/t-sol2 b/libgcc/config/i386/t-sol2
--- a/libgcc/config/i386/t-sol2
+++ b/libgcc/config/i386/t-sol2
@@ -1,24 +1,6 @@
-# gmon build rule:
-$(T)gmon.o:	$(gcc_srcdir)/config/i386/gmon-sol2.c $(GCC_PASSES) $(CONFIG_H)
-	$(GCC_FOR_TARGET) $(GCC_CFLAGS) $(INCLUDES) $(CFLAGS) \
-		-c $(gcc_srcdir)/config/i386/gmon-sol2.c -o $(T)gmon.o
-
 # Assemble startup files.
-# Apparently Sun believes that assembler files don't need comments, because no
-# single ASCII character is valid (tried them all).  So we manually strip out
-# the comments with sed.  This bug may only be in the Early Access releases.
-$(T)gcrt1.o: $(gcc_srcdir)/config/i386/sol2-gc1.asm $(GCC_PASSES)
-	sed -e '/^!/d' <$(gcc_srcdir)/config/i386/sol2-gc1.asm >gcrt1.s
-	$(GCC_FOR_TARGET) $(CFLAGS) -c -o $(T)gcrt1.o gcrt1.s
-$(T)crt1.o: $(gcc_srcdir)/config/i386/sol2-c1.asm $(GCC_PASSES)
-	sed -e '/^!/d' <$(gcc_srcdir)/config/i386/sol2-c1.asm >crt1.s
-	$(GCC_FOR_TARGET) $(CFLAGS) -c -o $(T)crt1.o crt1.s
-$(T)crti.o: $(gcc_srcdir)/config/i386/sol2-ci.asm $(GCC_PASSES)
-	sed -e '/^!/d' <$(gcc_srcdir)/config/i386/sol2-ci.asm >crti.s
-	$(GCC_FOR_TARGET) $(CFLAGS) -c -o $(T)crti.o crti.s
-$(T)crtn.o: $(gcc_srcdir)/config/i386/sol2-cn.asm $(GCC_PASSES)
-	sed -e '/^!/d' <$(gcc_srcdir)/config/i386/sol2-cn.asm >crtn.s
-	$(GCC_FOR_TARGET) $(CFLAGS) -c -o $(T)crtn.o crtn.s
+gcrt1.o: $(srcdir)/config/$(cpu_type)/sol2-gc1.S
+	$(gcc_compile) -c $<
 
 # We need to use -fPIC when we are using gcc to compile the routines in
 # crtstuff.c.  This is only really needed when we are going to use gcc/g++
@@ -29,9 +11,7 @@
 # We must also enable optimization to avoid having any code appear after
 # the call & alignment statement, but before we switch back to the
 # .text section.
-
 CRTSTUFF_T_CFLAGS = -fPIC -O2
-TARGET_LIBGCC2_CFLAGS = -fPIC
 
 # Add support for the introduction of 128-bit long double.
 SHLIB_MAPFILES += $(srcdir)/config/i386/libgcc-sol2.ver
diff --git a/gcc/config/sparc/sol2-c1.asm b/libgcc/config/sparc/sol2-c1.S
rename from gcc/config/sparc/sol2-c1.asm
rename to libgcc/config/sparc/sol2-c1.S
diff --git a/gcc/config/sparc/sol2-ci.asm b/libgcc/config/sparc/sol2-ci.S
rename from gcc/config/sparc/sol2-ci.asm
rename to libgcc/config/sparc/sol2-ci.S
diff --git a/gcc/config/sparc/sol2-cn.asm b/libgcc/config/sparc/sol2-cn.S
rename from gcc/config/sparc/sol2-cn.asm
rename to libgcc/config/sparc/sol2-cn.S
diff --git a/gcc/config/sparc/t-sol2 b/libgcc/config/sparc/t-sol2
rename from gcc/config/sparc/t-sol2
rename to libgcc/config/sparc/t-sol2
--- a/gcc/config/sparc/t-sol2
+++ b/libgcc/config/sparc/t-sol2
@@ -1,5 +1,5 @@
 # Copyright (C) 1992, 1993, 1994, 1995, 1996, 1997, 1998, 2000, 2001,
-# 2002 Free Software Foundation, Inc.
+# 2002, 2011 Free Software Foundation, Inc.
 #
 # This file is part of GCC.
 #
@@ -17,27 +17,13 @@
 # along with GCC; see the file COPYING3.  If not see
 # <http://www.gnu.org/licenses/>.
 
-# gmon build rule:
-$(T)gmon.o:	$(srcdir)/config/sparc/gmon-sol2.c $(GCC_PASSES) \
-  $(TCONFIG_H) tsystem.h coretypes.h $(TM_H) stmp-int-hdrs
-	$(GCC_FOR_TARGET) $(GCC_CFLAGS) $(INCLUDES) $(MULTILIB_CFLAGS) \
-		-c $(srcdir)/config/sparc/gmon-sol2.c -o $(T)gmon.o
-
 # Assemble startup files.
-$(T)crt1.o: $(srcdir)/config/sparc/sol2-c1.asm $(GCC_PASSES)
-	$(GCC_FOR_TARGET) $(MULTILIB_CFLAGS) -c -o $(T)crt1.o -x assembler-with-cpp $(srcdir)/config/sparc/sol2-c1.asm
-$(T)crti.o: $(srcdir)/config/sparc/sol2-ci.asm $(GCC_PASSES)
-	$(GCC_FOR_TARGET) $(MULTILIB_CFLAGS) -c -o $(T)crti.o -x assembler-with-cpp $(srcdir)/config/sparc/sol2-ci.asm
-$(T)crtn.o: $(srcdir)/config/sparc/sol2-cn.asm $(GCC_PASSES)
-	$(GCC_FOR_TARGET) $(MULTILIB_CFLAGS) -c -o $(T)crtn.o -x assembler-with-cpp $(srcdir)/config/sparc/sol2-cn.asm
-$(T)gcrt1.o: $(srcdir)/config/sparc/sol2-c1.asm $(GCC_PASSES)
-	$(GCC_FOR_TARGET) $(MULTILIB_CFLAGS) -c -DGCRT1 -o $(T)gcrt1.o -x assembler-with-cpp $(srcdir)/config/sparc/sol2-c1.asm
+gcrt1.o: $(srcdir)/config/$(cpu_type)/sol2-gc1.S
+	$(gcc_compile) -c -DGCRT1 $<
 
 # We need to use -fPIC when we are using gcc to compile the routines in
 # crtstuff.c.  This is only really needed when we are going to use gcc/g++
 # to produce a shared library, but since we don't know ahead of time when
 # we will be doing that, we just always use -fPIC when compiling the
 # routines in crtstuff.c.
-
 CRTSTUFF_T_CFLAGS = -fPIC
-TARGET_LIBGCC2_CFLAGS = -fPIC
diff --git a/libgcc/config/sparc/t-crtfm b/libgcc/config/t-crtfm
rename from libgcc/config/sparc/t-crtfm
rename to libgcc/config/t-crtfm
--- a/libgcc/config/sparc/t-crtfm
+++ b/libgcc/config/t-crtfm
@@ -1,2 +1,2 @@
-crtfastmath.o: $(gcc_srcdir)/config/sparc/crtfastmath.c
-	$(gcc_compile) -c $(gcc_srcdir)/config/sparc/crtfastmath.c
+crtfastmath.o: $(gcc_srcdir)/config/$(cpu_type)/crtfastmath.c
+	$(gcc_compile) -c $<
diff --git a/gcc/config/t-slibgcc-sld b/libgcc/config/t-slibgcc
rename from gcc/config/t-slibgcc-sld
rename to libgcc/config/t-slibgcc
--- a/gcc/config/t-slibgcc-sld
+++ b/libgcc/config/t-slibgcc
@@ -1,4 +1,5 @@
-# Copyright (C) 2001, 2002, 2003, 2004, 2005 Free Software Foundation, Inc.
+# Copyright (C) 2001, 2002, 2003, 2004, 2005, 2011
+# Free Software Foundation, Inc.
 #
 # This file is part of GCC.
 #
@@ -16,35 +17,35 @@
 # along with GCC; see the file COPYING3.  If not see
 # <http://www.gnu.org/licenses/>.
 
-# Build a shared libgcc library with the Solaris linker.
+# Build a shared libgcc library for ELF.
 
 SHLIB_EXT = .so
 SHLIB_SOLINK = @shlib_base_name@.so
-SHLIB_SONAME = @shlib_base_name@.so.1
+SHLIB_SOVERSION = 1
+SHLIB_SONAME = @shlib_base_name@.so.$(SHLIB_SOVERSION)
 SHLIB_MAP = @shlib_map_file@
 SHLIB_OBJS = @shlib_objs@
 SHLIB_DIR = @multilib_dir@
 SHLIB_SLIBDIR_QUAL = @shlib_slibdir_qual@
+SHLIB_LC = -lc
+SHLIB_MAKE_SOLINK = $(LN_S) $(SHLIB_SONAME) $(SHLIB_DIR)/$(SHLIB_SOLINK)
+SHLIB_INSTALL_SOLINK = $(LN_S) $(SHLIB_SONAME) \
+	$(DESTDIR)$(slibdir)$(SHLIB_SLIBDIR_QUAL)/$(SHLIB_SOLINK)
 
-SHLIB_LINK = $(GCC_FOR_TARGET) $(LIBGCC2_CFLAGS) -shared -nodefaultlibs \
-	-Wl,-h,$(SHLIB_SONAME) -Wl,-z,text -Wl,-z,defs \
-	-Wl,-M,$(SHLIB_MAP) -o $(SHLIB_DIR)/$(SHLIB_SONAME).tmp \
-	@multilib_flags@ $(SHLIB_OBJS) -lc && \
+SHLIB_LINK = $(CC) $(LIBGCC2_CFLAGS) -shared -nodefaultlibs \
+	$(SHLIB_LDFLAGS) \
+	-o $(SHLIB_DIR)/$(SHLIB_SONAME).tmp @multilib_flags@ \
+	$(SHLIB_OBJS) $(SHLIB_LC) && \
 	rm -f $(SHLIB_DIR)/$(SHLIB_SOLINK) && \
 	if [ -f $(SHLIB_DIR)/$(SHLIB_SONAME) ]; then \
 	  mv -f $(SHLIB_DIR)/$(SHLIB_SONAME) \
 		$(SHLIB_DIR)/$(SHLIB_SONAME).backup; \
 	else true; fi && \
 	mv $(SHLIB_DIR)/$(SHLIB_SONAME).tmp $(SHLIB_DIR)/$(SHLIB_SONAME) && \
-	$(LN_S) $(SHLIB_SONAME) $(SHLIB_DIR)/$(SHLIB_SOLINK)
-# $(slibdir) double quoted to protect it from expansion while building
-# libgcc.mk.  We want this delayed until actual install time.
+	$(SHLIB_MAKE_SOLINK)
 SHLIB_INSTALL = \
-	$$(mkinstalldirs) $$(DESTDIR)$$(slibdir)$(SHLIB_SLIBDIR_QUAL); \
+	$(mkinstalldirs) $(DESTDIR)$(slibdir)$(SHLIB_SLIBDIR_QUAL); \
 	$(INSTALL_DATA) $(SHLIB_DIR)/$(SHLIB_SONAME) \
-	  $$(DESTDIR)$$(slibdir)$(SHLIB_SLIBDIR_QUAL)/$(SHLIB_SONAME); \
-	rm -f $$(DESTDIR)$$(slibdir)$(SHLIB_SLIBDIR_QUAL)/$(SHLIB_SOLINK); \
-	$(LN_S) $(SHLIB_SONAME) \
-	  $$(DESTDIR)$$(slibdir)$(SHLIB_SLIBDIR_QUAL)/$(SHLIB_SOLINK)
-SHLIB_MKMAP = $(srcdir)/mkmap-symver.awk
-SHLIB_MAPFILES = $(srcdir)/libgcc-std.ver
+	  $(DESTDIR)$(slibdir)$(SHLIB_SLIBDIR_QUAL)/$(SHLIB_SONAME); \
+	rm -f $(DESTDIR)$(slibdir)$(SHLIB_SLIBDIR_QUAL)/$(SHLIB_SOLINK); \
+	$(SHLIB_INSTALL_SOLINK)
diff --git a/libgcc/config/t-slibgcc-elf-ver b/libgcc/config/t-slibgcc-elf-ver
new file mode 100644
--- /dev/null
+++ b/libgcc/config/t-slibgcc-elf-ver
@@ -0,0 +1,21 @@
+# Copyright (C) 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/>.
+
+# Build a shared libgcc library for ELF.
+
+SHLIB_MAPFILES = $(gcc_srcdir)/libgcc-std.ver
diff --git a/libgcc/config/t-slibgcc-gld b/libgcc/config/t-slibgcc-gld
new file mode 100644
--- /dev/null
+++ b/libgcc/config/t-slibgcc-gld
@@ -0,0 +1,25 @@
+# Copyright (C) 2011
+# Free Software Foundation, Inc.
+#
+# This file is part of GCC.
+#
+# GCC is free software; you can redistribute it and/or modify
+# it under the terms of the GNU General Public License as published by
+# the Free Software Foundation; either version 3, or (at your option)
+# any later version.
+#
+# GCC is distributed in the hope that it will be useful,
+# but WITHOUT ANY WARRANTY; without even the implied warranty of
+# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+# GNU General Public License for more details.
+#
+# You should have received a copy of the GNU General Public License
+# along with GCC; see the file COPYING3.  If not see
+# <http://www.gnu.org/licenses/>.
+
+# Build a shared libgcc library for ELF with symbol versioning
+# with the GNU linker.
+
+SHLIB_LDFLAGS = -Wl,--soname=$(SHLIB_SONAME) \
+	-Wl,--version-script=$(SHLIB_MAP)
+SHLIB_MKMAP = $(gcc_srcdir)/mkmap-symver.awk
diff --git a/libgcc/config/t-slibgcc-sld b/libgcc/config/t-slibgcc-sld
new file mode 100644
--- /dev/null
+++ b/libgcc/config/t-slibgcc-sld
@@ -0,0 +1,24 @@
+# Copyright (C) 2011
+# Free Software Foundation, Inc.
+#
+# This file is part of GCC.
+#
+# GCC is free software; you can redistribute it and/or modify
+# it under the terms of the GNU General Public License as published by
+# the Free Software Foundation; either version 3, or (at your option)
+# any later version.
+#
+# GCC is distributed in the hope that it will be useful,
+# but WITHOUT ANY WARRANTY; without even the implied warranty of
+# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+# GNU General Public License for more details.
+#
+# You should have received a copy of the GNU General Public License
+# along with GCC; see the file COPYING3.  If not see
+# <http://www.gnu.org/licenses/>.
+
+# Build a shared libgcc library with the Solaris linker.
+
+SHLIB_LDFLAGS = -Wl,-h,$(SHLIB_SONAME) -Wl,-z,text -Wl,-z,defs \
+	-Wl,-M,$(SHLIB_MAP)
+SHLIB_MKMAP = $(gcc_srcdir)/mkmap-symver.awk
diff --git a/gcc/config/t-sol2 b/libgcc/config/t-sol2
copy from gcc/config/t-sol2
copy to libgcc/config/t-sol2
--- a/gcc/config/t-sol2
+++ b/libgcc/config/t-sol2
@@ -1,4 +1,4 @@
-# Copyright (C) 2004, 2008, 2009, 2010 Free Software Foundation, Inc.
+# Copyright (C) 2004, 2008, 2009, 2010, 2011 Free Software Foundation, Inc.
 #
 # This file is part of GCC.
 #
@@ -16,21 +16,23 @@
 # along with GCC; see the file COPYING3.  If not see
 # <http://www.gnu.org/licenses/>.
 
-# Solaris-specific format checking and pragmas
-sol2-c.o: $(srcdir)/config/sol2-c.c $(CONFIG_H) $(SYSTEM_H) coretypes.h \
-  tree.h c-family/c-format.h $(C_PRAGMA_H) $(C_COMMON_H) $(CPPLIB_H) \
-  intl.h $(TM_H) $(TM_P_H)
-	$(COMPILER) -c $(ALL_COMPILERFLAGS) $(ALL_CPPFLAGS) $(INCLUDES) \
-	  $(srcdir)/config/sol2-c.c
-
-# Solaris-specific attributes
-sol2.o: $(srcdir)/config/sol2.c $(CONFIG_H) $(SYSTEM_H) coretypes.h \
-  tree.h output.h $(TM_H) $(TM_P_H) $(GGC_H)
-	$(COMPILER) -c $(ALL_COMPILERFLAGS) $(ALL_CPPFLAGS) $(INCLUDES) \
-	  $(srcdir)/config/sol2.c
-
 # Use unwind-dw2-fde-glibc.c.  Unless linker support and dl_iterate_phdr
 # are present, automatically falls back to unwind-dw2-fde.c.
-LIB2ADDEH = $(srcdir)/unwind-dw2.c $(srcdir)/unwind-dw2-fde-glibc.c \
-  $(srcdir)/unwind-sjlj.c $(srcdir)/gthr-gnat.c $(srcdir)/unwind-c.c
+LIB2ADDEH = $(gcc_srcdir)/unwind-dw2.c $(gcc_srcdir)/unwind-dw2-fde-glibc.c \
+  $(gcc_srcdir)/unwind-sjlj.c $(gcc_srcdir)/gthr-gnat.c $(gcc_srcdir)/unwind-c.c
 LIB2ADDEHDEP = unwind.inc unwind-dw2-fde.h unwind-dw2-fde.c
+
+# gmon build rule:
+gmon.o:	$(srcdir)/config/gmon-sol2.c
+	$(gcc_compile) -c $<
+
+# Assemble startup files.
+crt1.o: $(srcdir)/config/$(cpu_type)/sol2-c1.S
+	$(gcc_compile) -c $<
+crti.o: $(srcdir)/config/$(cpu_type)/sol2-ci.S
+	$(gcc_compile) -c $<
+crtn.o: $(srcdir)/config/$(cpu_type)/sol2-cn.S
+	$(gcc_compile) -c $<
+
+HOST_LIBGCC2_CFLAGS = -fPIC
+CRTSTUFF_T_CFLAGS_S = $(CRTSTUFF_T_CFLAGS)
diff --git a/libgcc/configure.ac b/libgcc/configure.ac
--- a/libgcc/configure.ac
+++ b/libgcc/configure.ac
@@ -4,6 +4,7 @@ sinclude(../config/enable.m4)
 sinclude(../config/tls.m4)
 sinclude(../config/acx.m4)
 sinclude(../config/no-executables.m4)
+sinclude(../config/lib-ld.m4)
 sinclude(../config/override.m4)
 sinclude(../config/dfp.m4)
 
@@ -166,6 +167,8 @@ AC_CACHE_CHECK([whether fixed-point is s
 fixed_point=$libgcc_cv_fixed_point
 AC_SUBST(fixed_point)
 
+AC_LIB_PROG_LD_GNU
+
 # Check for assembler CFI support.
 AC_CACHE_CHECK([whether assembler supports CFI directives], [libgcc_cv_cfi],
 	       [AC_COMPILE_IFELSE(
@@ -268,6 +271,7 @@ tmake_file="${tmake_file_}"
 AC_SUBST(tmake_file)
 
 # Substitute configuration variables
+AC_SUBST(cpu_type)
 AC_SUBST(extra_parts)
 AC_SUBST(asm_hidden_op)