[MIPS] Implementation of sel_ldr for MIPS architecture.

src/include/portability.h

 /*
  * 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.
  */
 
 /*
  * This file should be at the top of the #include group, followed by
  * standard system #include files, then by native client specific
  * includes.
@@ skipping 63 matching lines @@
  * http://msdn.microsoft.com/en-us/library/b0084kay.aspx
  * http://www.agner.org/optimize/calling_conventions.pdf
  * r with gcc, run: "echo | gcc -E -dM -"
  */
 #if defined(_M_X64) || defined(__x86_64__)
 #define NACL_HOST_WORDSIZE 64
 #elif defined(_M_IX86) || defined(__i386__)
 #define NACL_HOST_WORDSIZE 32
 #elif defined(__ARMEL__)
 #define NACL_HOST_WORDSIZE 32
+#elif defined(__mips__)
+#define NACL_HOST_WORDSIZE 32
 #elif defined(__pnacl__)
 #define NACL_HOST_WORDSIZE 32
 #else
 #error Unrecognized host architecture
 #endif
 
 #ifndef SIZE_T_MAX
 # define SIZE_T_MAX ((size_t) -1)
 #endif
 
@@ skipping 184 matching lines @@
  * macros for run-time error detectors (such as Valgrind/Memcheck).
  */
 #if defined(_DEBUG) && NACL_LINUX
 #include "native_client/src/third_party/valgrind/memcheck.h"
 #define NACL_MAKE_MEM_UNDEFINED(a, b) (void) VALGRIND_MAKE_MEM_UNDEFINED(a, b)
 #else
 #define NACL_MAKE_MEM_UNDEFINED(a, b)
 #endif
 
 #endif  /* NATIVE_CLIENT_SRC_INCLUDE_PORTABILITY_H_ */