Add --with-abi= support to x86_64-*-*

2012-04-02  H.J. Lu  <hongjiu.lu@intel.com>

	* config.gcc: Use i386/biarchx32.h instead of i386/biarch64.h
	for --with-abi={x32|mx32} or --with-multilib-list=mx32.
	(supported_defaults): Add abi for i[34567]86-*-* and x86_64-*-*.

	* config/i386/biarchx32.h: New.

From-SVN: r186099

gcc/ChangeLog

+2012-04-02  H.J. Lu  <hongjiu.lu@intel.com>
+
+	* config.gcc: Use i386/biarchx32.h instead of i386/biarch64.h
+	for --with-abi={x32|mx32} or --with-multilib-list=mx32.
+	(supported_defaults): Add abi for i[34567]86-*-* and x86_64-*-*.
+
+	* config/i386/biarchx32.h: New.
+
 2012-04-02  Anatoly Sokolov  <aesok@post.ru>
 
 	* config/arm/arm.h (PREFERRED_RELOAD_CLASS): Remove.

gcc/config.gcc

@@ -488,6 +488,10 @@ fi
 
 case ${target} in
 i[34567]86-*-*)
+	if test "x$with_abi" != x; then
+		echo "This target does not support --with-abi."
+		exit 1
+	fi
 	if test "x$enable_cld" = xyes; then
 		tm_defines="${tm_defines} USE_IX86_CLD=1"
 	fi
@@ -497,7 +501,24 @@ i[34567]86-*-*)
 	tm_file="vxworks-dummy.h ${tm_file}"
 	;;
 x86_64-*-*)
-	tm_file="i386/biarch64.h ${tm_file}"
+	case ${with_abi} in
+	"")
+		if test "x$with_multilib_list" = xmx32; then
+			tm_file="i386/biarchx32.h ${tm_file}"
+		else
+			tm_file="i386/biarch64.h ${tm_file}"
+		fi
+		;;
+	64 | m64)
+		tm_file="i386/biarch64.h ${tm_file}"
+		;;
+	x32 | mx32)
+		tm_file="i386/biarchx32.h ${tm_file}"
+		;;
+	*)
+		echo "Unknown ABI used in --with-abi=$with_abi"
+		exit 1
+	esac
 	if test "x$enable_cld" = xyes; then
 		tm_defines="${tm_defines} USE_IX86_CLD=1"
 	fi
@@ -3138,7 +3159,7 @@ case "${target}" in
 		;;
 
 	i[34567]86-*-* | x86_64-*-*)
-		supported_defaults="arch arch_32 arch_64 cpu cpu_32 cpu_64 tune tune_32 tune_64"
+		supported_defaults="abi arch arch_32 arch_64 cpu cpu_32 cpu_64 tune tune_32 tune_64"
 		for which in arch arch_32 arch_64 cpu cpu_32 cpu_64 tune tune_32 tune_64; do
 			eval "val=\$with_$which"
 			case ${val} in

gcc/config/i386/biarchx32.h

+/* Make configure files to produce biarch compiler defaulting to x32 mode.
+   This file must be included very first, while the OS specific file later
+   to overwrite otherwise wrong defaults.
+   Copyright (C) 2012 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/>.  */
+
+#define TARGET_64BIT_DEFAULT (OPTION_MASK_ISA_64BIT | OPTION_MASK_ABI_X32)
+#define TARGET_BI_ARCH 2