Index: gcc-4.5/gcc/config/mips/linux64.h
===================================================================
--- gcc-4.5.orig/gcc/config/mips/linux64.h	2010-09-25 02:05:05.484423095 -0700
+++ gcc-4.5/gcc/config/mips/linux64.h	2010-09-25 02:31:18.524931014 -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 "\
@@ -35,9 +35,9 @@
 %{!shared: \
   %{profile:-lc_p} %{!profile:-lc}}"
 
-#define GLIBC_DYNAMIC_LINKER32 "/lib/ld.so.1"
-#define GLIBC_DYNAMIC_LINKER64 "/lib64/ld.so.1"
-#define GLIBC_DYNAMIC_LINKERN32 "/lib32/ld.so.1"
+#define GLIBC_DYNAMIC_LINKER32 "/lib32/ld.so.1"
+#define GLIBC_DYNAMIC_LINKER64 "/lib/ld.so.1"
+#define GLIBC_DYNAMIC_LINKERN32 "/lib64/ld.so.1"
 #define UCLIBC_DYNAMIC_LINKERN32 "/lib32/ld-uClibc.so.0"
 #define LINUX_DYNAMIC_LINKERN32 \
   CHOOSE_DYNAMIC_LINKER (GLIBC_DYNAMIC_LINKERN32, UCLIBC_DYNAMIC_LINKERN32)
Index: gcc-4.5/gcc/config.gcc
===================================================================
--- gcc-4.5.orig/gcc/config.gcc	2010-07-22 16:37:17.000000000 -0700
+++ gcc-4.5/gcc/config.gcc	2010-09-25 02:25:41.412414136 -0700
@@ -1707,7 +1707,7 @@
 	*-*-irix6*)
 		tm_file="${tm_file} mips/iris6.h"
 		tmake_file="${tmake_file} mips/t-iris6"
-		tm_defines="${tm_defines} MIPS_ISA_DEFAULT=3 MIPS_ABI_DEFAULT=ABI_N32"
+		tm_defines="${tm_defines} MIPS_ISA_DEFAULT=3 MIPS_ABI_DEFAULT=ABI_64"
 		case ${target} in
 		*-*-irix6.[0-4]*)
 			use_gcc_stdint=provide
Index: gcc-4.5/gcc/config/mips/t-linux64
===================================================================
--- gcc-4.5.orig/gcc/config/mips/t-linux64	2010-07-11 16:14:42.000000000 -0700
+++ gcc-4.5/gcc/config/mips/t-linux64	2010-09-25 02:29:52.758708250 -0700
@@ -18,7 +18,7 @@
 
 MULTILIB_OPTIONS = mabi=n32/mabi=32/mabi=64
 MULTILIB_DIRNAMES = n32 32 64
-MULTILIB_OSDIRNAMES = ../lib32 ../lib ../lib64
+MULTILIB_OSDIRNAMES = ../lib64 ../lib32 ../lib
 
 EXTRA_MULTILIB_PARTS=crtbegin.o crtend.o crtbeginS.o crtendS.o crtbeginT.o