gcc-4.6, gcc-4.7: Add support for building mips64 cross compiler

Defaults to n64 ABI

(From OE-Core rev: 253f1f3aebd1a90c55efcc6d1f585204e7f3c371)

Signed-off-by: Khem Raj <raj.khem@gmail.com>
Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>

meta/recipes-devtools/gcc/gcc-4.6.inc

@@ -74,6 +74,7 @@ SRC_URI = "svn://gcc.gnu.org/svn/gcc/branches;module=${BRANCH};proto=http \
 	   file://GPLUSPLUS_INCLUDE_DIR_with_sysroot.patch \
 	   file://fortran-cross-compile-hack.patch \
 	   file://cpp-honour-sysroot.patch \
+	   file://mips64-default-n64.patch \
 	  "
 
 SRC_URI_append_sh3  = " file://sh3-installfix-fixheaders.patch "

meta/recipes-devtools/gcc/gcc-4.6/mips64-default-n64.patch

@@ -0,0 +1,32 @@
+MIPS64 defaults to n32 ABI, this patch makes it
+so that it defaults to N64 ABI
+
+Upstream-Status: Inappropriate [OE config specific]
+
+Signed-off-by: Khem Raj <raj.khem@gmail.com>
+Index: gcc-4_6-branch/gcc/config.gcc
+===================================================================
+--- gcc-4_6-branch.orig/gcc/config.gcc	2012-04-22 19:12:12.431061229 -0700
++++ gcc-4_6-branch/gcc/config.gcc	2012-04-22 19:13:36.307065289 -0700
+@@ -1882,7 +1882,7 @@
+ mips64*-*-linux* | mipsisa64*-*-linux*)
+ 	tm_file="dbxelf.h elfos.h gnu-user.h linux.h glibc-stdint.h ${tm_file} mips/linux.h mips/linux64.h"
+ 	tmake_file="${tmake_file} mips/t-linux64 mips/t-libgcc-mips16"
+-	tm_defines="${tm_defines} MIPS_ABI_DEFAULT=ABI_N32"
++	tm_defines="${tm_defines} MIPS_ABI_DEFAULT=ABI_64"
+ 	case ${target} in
+ 		mips64el-st-linux-gnu)
+ 			tm_file="${tm_file} mips/st.h"
+Index: gcc-4_6-branch/gcc/config/mips/linux64.h
+===================================================================
+--- gcc-4_6-branch.orig/gcc/config/mips/linux64.h	2012-04-22 19:10:59.743057711 -0700
++++ gcc-4_6-branch/gcc/config/mips/linux64.h	2012-04-22 19:11:56.919060479 -0700
+@@ -26,7 +26,7 @@
+   BASE_DRIVER_SELF_SPECS, \
+   LINUX_DRIVER_SELF_SPECS \
+   " %{!EB:%{!EL:%(endian_spec)}}" \
+-  " %{!mabi=*: -mabi=n32}"
++  " %{!mabi=*: -mabi=64}"
+ 
+ #undef LIB_SPEC
+ #define LIB_SPEC "\

meta/recipes-devtools/gcc/gcc-4.7.inc

@@ -64,6 +64,7 @@ SRC_URI = "svn://gcc.gnu.org/svn/gcc/branches;module=${BRANCH};proto=http \
 	   file://fortran-cross-compile-hack.patch \
 	   file://libgcc-sjlj-check.patch \
 	   file://cpp-honor-sysroot.patch \
+	   file://mips64-default-n64.patch \
 	  "
 
 S = "${TMPDIR}/work-shared/gcc-${PV}-${PR}/${BRANCH}"

meta/recipes-devtools/gcc/gcc-4.7/mips64-default-n64.patch

@@ -0,0 +1,19 @@
+MIPS64 defaults to n32 ABI, this patch makes it
+so that it defaults to N64 ABI
+
+Upstream-Status: Inappropriate [OE config specific]
+
+Signed-off-by: Khem Raj <raj.khem@gmail.com>
+Index: gcc-4_7-branch/gcc/config.gcc
+===================================================================
+--- gcc-4_7-branch.orig/gcc/config.gcc	2012-04-22 19:30:21.000000000 -0700
++++ gcc-4_7-branch/gcc/config.gcc	2012-04-22 21:09:57.783403173 -0700
+@@ -1750,7 +1750,7 @@
+ mips64*-*-linux* | mipsisa64*-*-linux*)
+ 	tm_file="dbxelf.h elfos.h gnu-user.h linux.h glibc-stdint.h ${tm_file} mips/gnu-user.h mips/gnu-user64.h mips/linux64.h"
+ 	tmake_file="${tmake_file} mips/t-linux64"
+-	tm_defines="${tm_defines} MIPS_ABI_DEFAULT=ABI_N32"
++	tm_defines="${tm_defines} MIPS_ABI_DEFAULT=ABI_64"
+ 	case ${target} in
+ 		mips64el-st-linux-gnu)
+ 			tm_file="${tm_file} mips/st.h"

meta/recipes-devtools/gcc/gcc-configure-common.inc

@@ -49,6 +49,10 @@ EXTRA_OECONF = "${@['--enable-clocale=generic', ''][d.getVar('USE_NLS', True) !=
 # Build uclibc compilers without cxa_atexit support
 EXTRA_OECONF_append_linux               = " --enable-__cxa_atexit"
 EXTRA_OECONF_append_libc-uclibc        = " --enable-__cxa_atexit"
+
+EXTRA_OECONF_append_mips64    = " --with-abi=64 --with-arch-64=mips64 --with-tune-64=mips64"
+EXTRA_OECONF_append_mips64el    = " --with-abi=64 --with-arch-64=mips64 --with-tune-64=mips64"
+
 EXTRA_OECONF_FPU = "${@get_gcc_fpu_setting(bb, d)}"
 CPPFLAGS = ""