[MIPS] Implementation of sel_ldr for MIPS architecture.

src/trusted/service_runtime/nacl_signal_common.c

 /*
  * Copyright (c) 2012 The Native Client Authors. All rights reserved.
  * Use of this source code is governed by a BSD-style license that can be
  * found in the LICENSE file.
  */
 
 #include <stdio.h>
 #include <stdlib.h>
 #include <string.h>
 
@@ skipping 59 matching lines @@
  * (nacl_thread_index).
  */
 void NaClSignalContextGetCurrentThread(const struct NaClSignalContext *sigCtx,
                                        int *is_untrusted,
                                        struct NaClAppThread **result_thread) {
 #if NACL_ARCH(NACL_BUILD_ARCH) == NACL_x86 && NACL_BUILD_SUBARCH == 32
   /* For x86-32, if %cs does not match, it is untrusted code. */
   *is_untrusted = (NaClGetGlobalCs() != sigCtx->cs);
   *result_thread = nacl_thread[sigCtx->gs >> 3];
 #elif (NACL_ARCH(NACL_BUILD_ARCH) == NACL_x86 && NACL_BUILD_SUBARCH == 64) || \
-      NACL_ARCH(NACL_BUILD_ARCH) == NACL_arm
+      NACL_ARCH(NACL_BUILD_ARCH) == NACL_arm || \
+      NACL_ARCH(NACL_BUILD_ARCH) == NACL_mips
   uint32_t current_thread_index = NaClTlsGetIdx();
   if (NACL_TLS_INDEX_INVALID == current_thread_index) {
     *is_untrusted = 0;
     *result_thread = NULL;
   } else {
     struct NaClAppThread *thread = nacl_thread[current_thread_index];
     /*
      * Get the address of an arbitrary local, stack-allocated variable,
      * just for the purpose of doing a sanity check.
      */
@@ skipping 168 matching lines @@
   }
 
   NaClSignalHandlerInitPlatform();
   NaClSignalHandlerAdd(NaClSignalHandleUntrusted);
 }
 
 void NaClSignalHandlerFini() {
   /* We try to lock, but since we are shutting down, we ignore failures. */
   NaClSignalHandlerFiniPlatform();
 }