[MIPS] Implementation of sel_ldr for MIPS architecture.

pnacl/scripts/common-tools.sh

Index: pnacl/scripts/common-tools.sh
diff --git a/pnacl/scripts/common-tools.sh b/pnacl/scripts/common-tools.sh
index d1f2e560ec3f81429ea10437079a6f049152b501..e2765c9c07df8484c194074132e5383663751df8 100755
--- a/pnacl/scripts/common-tools.sh
+++ b/pnacl/scripts/common-tools.sh
@@ -92,6 +92,7 @@ readonly SO_DIR
 BUILD_ARCH_X8632=false
 BUILD_ARCH_X8664=false
 BUILD_ARCH_ARM=false
+BUILD_ARCH_MIPS=false
 if [ "${BUILD_ARCH}" == "x86_32" ] ||
    [ "${BUILD_ARCH}" == "i386" ] ||
    [ "${BUILD_ARCH}" == "i686" ] ; then
@@ -101,6 +102,8 @@ elif [ "${BUILD_ARCH}" == "x86_64" ] ; then
   BUILD_ARCH_X8664=true
 elif [ "${BUILD_ARCH}" == "armv7l" ] ; then
   BUILD_ARCH_ARM=true
+elif [ "${BUILD_ARCH}" == "mips32" ] ; then
+  BUILD_ARCH_MIPS=true
 else
   echo "Unknown build arch '${BUILD_ARCH}'"
   exit -1
@@ -108,12 +111,15 @@ fi
 readonly BUILD_ARCH
 readonly BUILD_ARCH_X8632
 readonly BUILD_ARCH_X8664
+readonly BUILD_ARCH_ARM
+readonly BUILD_ARCH_MIPS
 
 
 HOST_ARCH=${HOST_ARCH:-${BUILD_ARCH}}
 HOST_ARCH_X8632=false
 HOST_ARCH_X8664=false
 HOST_ARCH_ARM=false
+HOST_ARCH_MIPS=false
 if [ "${HOST_ARCH}" == "x86_32" ] ||
    [ "${HOST_ARCH}" == "i386" ] ||
    [ "${HOST_ARCH}" == "i686" ] ; then
@@ -123,6 +129,8 @@ elif [ "${HOST_ARCH}" == "x86_64" ] ; then
   HOST_ARCH_X8664=true
 elif [ "${HOST_ARCH}" == "armv7l" ] ; then
   HOST_ARCH_ARM=true
+elif [ "${HOST_ARCH}" == "mips32" ] ; then
+  HOST_ARCH_MIPS=true
 else
   echo "Unknown host arch '${HOST_ARCH}'"
   exit -1
@@ -131,6 +139,7 @@ readonly HOST_ARCH
 readonly HOST_ARCH_X8632
 readonly HOST_ARCH_X8664
 readonly HOST_ARCH_ARM
+readonly HOST_ARCH_MIPS
 
 if [ "${BUILD_ARCH}" != "${HOST_ARCH}" ]; then
   if ! { ${BUILD_ARCH_X8664} && ${HOST_ARCH_X8632}; }; then