stop building/testing old x86 validator.

src/trusted/validator/x86/ncval_seg_sfi/generator/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')
-
-#
-#
-# Build on x86 only.
-#
-#
-if not env.Bit('target_x86'): Return()
-
-# ------------------------------------------------------
-# General adjustments to the environment for builds.
-
-# TODO(bradchen): eliminate need for the following line
-env.FilterOut(CCFLAGS=['-Wextra', '-Wswitch-enum', '-Wsign-compare'])
-
-# Defines the source directory where validator generated files should be added.
-val_src_dir = '$MAIN_DIR/src/trusted/validator/x86/ncval_seg_sfi'
-# ------------------------------------------------------
-# Source generation:
-#
-# Source generation is controlled by to command line directives, and can be
-# built in either the x86-32 or the x86-64 platform. The two directives are:
-#
-#   valclean : Delete the existing versions of the generated files.
-#       This step should be done whenever ANY change may effect
-#       the generated sources.
-#
-#   valgen : Regenerate any deleted source files. Note: some generated
-#       source files do understand dependencies and do not need to be
-#       deleted before calling valgen. However, do not count on this,
-#       as some dependencies are not caught. To be safe, if you have
-#       modified a file that effects source generation, run "valclean"
-#       followed by a "valgen" to guarantee that generated sources are
-#       up to date.
-
-
-gen_env = env.Clone()
-gen_env.Append(CCFLAGS=['-DNACL_TRUSTED_BUT_NOT_TCB'])
-
-generate = False
-if 'valgen' in COMMAND_LINE_TARGETS: generate = True
-if 'valclean' in COMMAND_LINE_TARGETS: generate = True
-
-# Set of generated (source) decoder tables.
-tables = []
-
-# ------------------------------------------------------
-# Table generators:
-#
-# In the middle of generating, we unconditionally add ncdecode_table and
-# ncdecode_tablegen so that the tests which depend on it, can run correctly.
-# This step sits in the middle because of dependency order, where the next
-# generation step requires this executable.
-
-# Add x86 decoder table generator for segment SFI sandboxing validator.
-#
-#
-# Isolate the environment for ncdecode_table to prevent a cycle.
-env_decode_table = env.Clone()
-env_decode_table.Append(CCFLAGS=['-DNACL_TRUSTED_BUT_NOT_TCB'])
-
-# TODO: This should be handled more cleanly, by just building
-#   Testing type programs for coverage. But for the moment, we need sel_ldr
-#   and others to have coverage, so it's easier to gate it off here.
-env_decode_table['COVERAGE_LINKCOM_EXTRAS'] = None
-
-ncdecode_table = env_decode_table.ComponentProgram(
-    'ncdecode_table',
-    ['ncdecode_table.c'],
-    EXTRA_LIBS=[env_decode_table.NaClTargetArchSuffix('ncval_base_verbose')])
-
-# ------------------------------------------------------
-#  Source generation step 2: Generate decoder tables.
-#
-# Now we are back to conditionally defining the large tables generated
-# by ncdecode_tablegen.
-#
-if generate:
-  #
-  # Generate 32 and 64 bit versions of ncdecodetab and ncdisasmtab.
-  #
-  for bits in ['32', '64']:
-    ncv_decodetab_h = '%s/gen/%s_%s.h' % (val_src_dir, 'ncdecodetab', bits)
-    ncv_disasmtab_h = '%s/gen/%s_%s.h' % (val_src_dir, 'ncdisasmtab', bits)
-    ncv_badprefixmask_h= '%s/gen/%s_%s.h' % (
-        val_src_dir, 'ncbadprefixmask', bits)
-    exe_path = '${STAGING_DIR}/${PROGPREFIX}ncdecode_table${PROGSUFFIX}'
-    gen_env.Command(
-        [ncv_decodetab_h, ncv_disasmtab_h, ncv_badprefixmask_h],
-        exe_path,
-        ['%s -m%s %s %s %s' % (exe_path, bits, ncv_decodetab_h,
-                               ncv_disasmtab_h, ncv_badprefixmask_h )]
-    )
-    tables.append(ncv_decodetab_h)
-    tables.append(ncv_disasmtab_h)
-    tables.append(ncv_badprefixmask_h)
-
-  # Generate 32 and 64 bit versions of ncval_opcode_table (validator
-  # decoder tables)
-  gen_env.AlwaysBuild(
-      gen_env.Alias('valgen', tables))
-  gen_env.AlwaysBuild(
-      gen_env.Alias('valclean', action=[Delete(x) for x in tables]))