Move validator_x86_XX.rl out of unreviewed.

src/trusted/validator_ragel/unreviewed/parse_instruction.rl

 /*
  * 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.
  */
 
+/*
+ * Hand-written Ragel machines and actions used in validator and decoding.
+ *
+ * Note: this file includes many different machines which are supposed to be
+ * used together to implement decoding.
+ *
+ * E.g. modrm_parsing_ia32 implements “ModR/M style memory access” used in ia32
+ * mode, but actions it uses may come from modrm_actions_ia32 or, alternatively,
+ * the higher-level machine may have it's own unique implementation of actions.
+ */
+
 %%{
   machine prefix_actions;
 
   action branch_not_taken {
     SET_BRANCH_NOT_TAKEN(TRUE);
   }
   action branch_taken {
     SET_BRANCH_TAKEN(TRUE);
   }
   action data16_prefix {
@@ skipping 894 matching lines @@
   action rel8_operand_end { }
   action rel16_operand_begin { }
   action rel16_operand_end { }
   action rel32_operand_begin { }
   action rel32_operand_end { }
 
   rel8  = any >rel8_operand_begin @rel8_operand_end;
   rel16 = any{2} @~rel16_operand_begin @rel16_operand_end;
   rel32 = any{4} @~rel32_operand_begin @rel32_operand_end;
 }%%
+
+%%{
+  machine decoder;
+
+  decoder = (one_instruction
+    @{
+        process_instruction(instruction_start, current_position+1, &instruction,
+                            userdata);
+        instruction_start = current_position + 1;
+        SET_DISP_TYPE(DISPNONE);
+        SET_IMM_TYPE(IMMNONE);
+        SET_IMM2_TYPE(IMMNONE);
+        SET_REX_PREFIX(FALSE);
+        SET_DATA16_PREFIX(FALSE);
+        SET_LOCK_PREFIX(FALSE);
+        SET_REPNZ_PREFIX(FALSE);
+        SET_REPZ_PREFIX(FALSE);
+        SET_BRANCH_NOT_TAKEN(FALSE);
+        SET_BRANCH_TAKEN(FALSE);
+        /* Top three bis of VEX2 are inverted: see AMD/Intel manual.  */
+        SET_VEX_PREFIX2(0xe0);
+        SET_VEX_PREFIX3(0x00);
+        SET_ATT_INSTRUCTION_SUFFIX(NULL);
+        CLEAR_SPURIOUS_DATA16();
+        CLEAR_SPURIOUS_REX_B();
+        CLEAR_SPURIOUS_REX_X();
+        CLEAR_SPURIOUS_REX_R();
+        CLEAR_SPURIOUS_REX_W();
+    })*
+    $!{ process_error(current_position, userdata);
+        result = FALSE;
+        goto error_detected;
+    };
+}%%