Refactor the process of choosing validators.

src/trusted/validator_ragel/unreviewed/dfa_validate_64.c

Index: src/trusted/validator_ragel/unreviewed/dfa_validate_64.c
diff --git a/src/trusted/validator_ragel/unreviewed/dfa_validate_64.c b/src/trusted/validator_ragel/unreviewed/dfa_validate_64.c
index ca380da2a55667bf9602b8ba17aeab714911a9f2..01055f43df1bd0709ac96535d1e4537d908bbd83 100644
--- a/src/trusted/validator_ragel/unreviewed/dfa_validate_64.c
+++ b/src/trusted/validator_ragel/unreviewed/dfa_validate_64.c
@@ -25,7 +25,7 @@ static void ProcessError(const uint8_t *ptr, void *userdata) {
   UNREFERENCED_PARAMETER(userdata);
 }
 
-NaClValidationStatus NACL_SUBARCH_NAME(ApplyDfaValidator, x86, 64) (
+static NaClValidationStatus ApplyDfaValidator_x86_64(
     uintptr_t guest_addr,
     uint8_t *data,
     size_t size,
@@ -47,3 +47,41 @@ NaClValidationStatus NACL_SUBARCH_NAME(ApplyDfaValidator, x86, 64) (
   }
   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_64,
+  ValidatorCopyNotImplemented,
+  ValidatorCodeReplacementNotImplemented,
+};
+
+void NaClDfaValidatorInit_x86_64(struct NaClValidatorInterface **val) {
+  *val = &validator;
+}