Separate the (partial) decoder of the x86_32 validator into a separate library.

src/trusted/validator/x86/ncval_seg_sfi/build.scons

 # -*- python -*-
 # Copyright (c) 2011 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 os
 import sys
 Import('env')
 
@@ skipping 16 matching lines @@
 
 # TODO(bradchen): eliminate need for the following line
 env.FilterOut(CCFLAGS=['-Wextra', '-Wswitch-enum', '-Wsign-compare'])
 
 # Create environment for command-line tools and testing, rather than
 # part of the TCB. Then define compile-time flag that communicates
 # that we are compiling in the test environment (rather than for the TCB).
 test_env = env.Clone();
 test_env.Append(CCFLAGS=['-DNACL_TRUSTED_BUT_NOT_TCB'])
 
+# Special purpose partial decoder used by the ncval_seg_sfi (x86-32 bit validator).
+env.ComponentLibrary(env.NaClTargetArchSuffix('ncdis_seg_sfi'),
+                     ['ncdecode.c'])
+
 # Segment register validator library
 env.ComponentLibrary(env.NaClTargetArchSuffix('ncval_seg_sfi'),
-                     ['ncdecode.c',
-                      'ncvalidate.c',
+                     ['ncvalidate.c',
                       'ncvalidate_detailed.c'
                       ])
 
 # Verbose version of segment register validator library.
-env.ComponentLibrary(env.NaClTargetArchSuffix('ncval_seg_sfi_verbose'),
+env.ComponentLibrary(env.NaClTargetArchSuffix('ncdis_seg_sfi_verbose'),
                      ['ncdecode_verbose.c'])