Refactor the process of choosing validators.

src/trusted/validator_ragel/unreviewed/dfa_validate_32.c

 /*
  * 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.
  */
 
 /* Implement the ApplyDfaValidator API for the x86-32 architecture. */
 #include <assert.h>
 #include "native_client/src/shared/platform/nacl_log.h"
 #include "native_client/src/trusted/validator/ncvalidate.h"
 #include "native_client/src/trusted/validator/validation_cache.h"
 #include "native_client/src/trusted/validator_ragel/unreviewed/validator.h"
 
 /* Be sure the correct compile flags are defined for this. */
 #if NACL_ARCH(NACL_TARGET_ARCH) != NACL_x86
 # error("Can't compile, target is for x86-32")
 #else
 # if NACL_TARGET_SUBARCH != 32
 #  error("Can't compile, target is for x86-32")
 # endif
 #endif
 
 
 static void ProcessError(const uint8_t *ptr, void *userdata) {
   UNREFERENCED_PARAMETER(ptr);
   UNREFERENCED_PARAMETER(userdata);
 }
 
-NaClValidationStatus NACL_SUBARCH_NAME(ApplyDfaValidator, x86, 32) (
+NaClValidationStatus ApplyDfaValidator_x86_32(
     uintptr_t guest_addr,
     uint8_t *data,
     size_t size,
     int stubout_mode,
     int readonly_text,
     const NaClCPUFeaturesX86 *cpu_features,
     struct NaClValidationCache *cache) {
   UNREFERENCED_PARAMETER(guest_addr);
   UNREFERENCED_PARAMETER(cache);
 
   if (stubout_mode || readonly_text) {
     return NaClValidationFailedNotImplemented;
   }
   if (!NaClArchSupported(cpu_features)) {
     return NaClValidationFailedCpuNotSupported;
   }
   if (ValidateChunkIA32(data, size, ProcessError, 0) == 0) {
     return NaClValidationSucceeded;
   }
   return NaClValidationFailed;
 }
+
+static NaClValidationStatus ValidatorCopyNotImplemented(
+    uintptr_t guest_addr,
+    uint8_t *data_old,
+    uint8_t *data_new,
+    size_t size,
+    const NaClCPUFeatures *cpu_features) {
+  UNREFERENCED_PARAMETER(guest_addr);
+  UNREFERENCED_PARAMETER(data_old);
+  UNREFERENCED_PARAMETER(data_new);
+  UNREFERENCED_PARAMETER(size);
+  UNREFERENCED_PARAMETER(cpu_features);
+  return NaClValidationFailedNotImplemented;
+}
+
+static NaClValidationStatus ValidatorCodeReplacementNotImplemented(
+    uintptr_t guest_addr,
+    uint8_t *data_old,
+    uint8_t *data_new,
+    size_t size,
+    const NaClCPUFeatures *cpu_features) {
+  UNREFERENCED_PARAMETER(guest_addr);
+  UNREFERENCED_PARAMETER(data_old);
+  UNREFERENCED_PARAMETER(data_new);
+  UNREFERENCED_PARAMETER(size);
+  UNREFERENCED_PARAMETER(cpu_features);
+  return NaClValidationFailedNotImplemented;
+}
+
+static struct NaClValidatorInterface validator = {
+  ApplyDfaValidator_x86_32,
+  ValidatorCopyNotImplemented,
+  ValidatorCodeReplacementNotImplemented,
+};
+
+void NaClDfaValidatorInit_x86_32(struct NaClValidatorInterface **val) {
+  *val = &validator;
+}