[MIPS] Adding validator for MIPS architecture.

src/trusted/service_runtime/build.scons

 # -*- python -*-
 # 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.
 
 import platform
 import os
 
 Import('env')
 
@@ skipping 209 matching lines @@
   else:
     raise Exception("Unsupported target")
 
 if env.Bit('linux'):
   ldr_inputs += [
       'posix/nacl_signal.c',
       'posix/sel_addrspace_posix.c'
       ]
   if env.Bit('target_arm'):
     ldr_inputs += ['linux/nacl_signal_arm.c']
+  elif env.Bit('target_mips32'):
+    ldr_inputs += ['linux/nacl_signal_mips.c']

[Brad Chen, 2012/04/13 00:50:52]

This file is not in the repo, right? Is there a reason not to hold this change
until nacl_signal_mips.c is ready?

   elif env.Bit('target_x86_32'):
     ldr_inputs += ['linux/nacl_signal_32.c']
   elif env.Bit('target_x86_64'):
     ldr_inputs += ['linux/nacl_signal_64.c']
   else:
     raise Exception("Unsupported target")
 
 if env.Bit('mac'):
   ldr_inputs += [
       'posix/nacl_signal.c',
@@ skipping 45 matching lines @@
 # it is available in Windows DDK only. The DDK is not
 # in third_party, but we might need to add it if we want to use it.
 #          'ntdll',
       ],
   )
 
 if env.Bit('target_x86'):
   VALIDATOR_LIB = env.NaClTargetArchSuffix('ncvalidate')
 elif env.Bit('target_arm'):
   VALIDATOR_LIB = 'ncvalidate_arm_v2'
+elif env.Bit('target_mips32'):
+  VALIDATOR_LIB = 'ncvalidate_mips'

[Brad Chen, 2012/04/13 00:50:52]

Ditto; I'm wondering if this is premature.

 else:
   # Unknown architecture
   raise AssertionError('Unknown architecture')
 
 r_debug_objs = []
 if env.Bit('linux'):
   r_debug_objs += [env.ComponentObject('linux/r_debug.c')]
 
 sel_ldr_libs = ['sel',
                 'env_cleanser',
@@ skipping 646 matching lines @@
   # TODO(tuduce): Make it work on windows.
   env.AddNodeToTestSuite(node, ['medium_tests'],
                          'run_sel_ldr_thread_death_test',
                          is_broken=env.Bit('windows'))
 
 
 # This currently tests linking of sel_main_chrome.c *only*.  We do not
 # expect this program to do anything meaningful when run.
 env.ComponentProgram('sel_main_chrome_test', ['sel_main_chrome_test.c'],
                      EXTRA_LIBS=sel_ldr_libs)