[MIPS] Use break instruction as NACL_HALT for MIPS.

src/trusted/service_runtime/arch/mips/nacl_text_pad_test.S

 /*
  * Copyright 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 "native_client/src/trusted/service_runtime/arch/mips/sel_ldr_mips.h"
 #include "native_client/src/trusted/service_runtime/include/bits/nacl_syscalls.h"
 #include "native_client/src/trusted/service_runtime/nacl_config.h"
 
 #define STORE_MASK $t7
 #define JUMP_MASK  $t6
-#define NACL_HALT  0x00000008  /*opcode for "jr $zero", Mips nacl halt*/
 
         /*
          * Code to test various address layout boundary conditions.
          * This is a translation from the x86-{32,64} code, and is
          * not intended to be super efficent, just good enough to
          * print out the values that are designed, while maintaining
          * strict control over the address space layout.
          */
 
         .text
@@ skipping 204 matching lines @@
         addiu $t9, $t9, %lo(NACL_SYSCALL_ADDR(NACL_sys_exit))
         addu  $a0, $zero, $s0
         nop
 
         nop
         and   $t9, $t9, JUMP_MASK
         jalr  $t9
         nop
 
 #if defined(PNACL_AS)
-/* NOTE: unlike x86 the alignment directive on Mips takes
-   the logarithm of the alignment */
+/*
+ * NOTE: unlike x86 the alignment directive on MIPS takes
+ * the logarithm of the alignment
+ */
 #define POW2_BIGGER_THAN_DOT 14
-        .align32 POW2_BIGGER_THAN_DOT, NACL_HALT
-        .fill (TEXT_EXTEND - (1 << POW2_BIGGER_THAN_DOT))/4, 4, NACL_HALT
+        .align32 POW2_BIGGER_THAN_DOT, NACL_HALT_OPCODE
+        .fill (TEXT_EXTEND - (1 << POW2_BIGGER_THAN_DOT))/4, 4, NACL_HALT_OPCODE
 #else
-        .fill (TEXT_EXTEND - (. - start_of_text))/4, 4, NACL_HALT
+        .fill (TEXT_EXTEND - (. - start_of_text))/4, 4, NACL_HALT_OPCODE
 #endif
 
 end_of_text:
 
 #if defined(EXPECTED_RODATA)
         .section .rodata
 ro_str: .ascii "Hello world\n"
 #endif