Start unit testing for functions in nc_inst_state.c

src/trusted/validator_x86/RexPrefixes.h

+/*
+ * 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.
+ */
+
+/* Defines accessor functions for rex prefixes. */
+
+#ifndef NATIVE_CLIENT_SRC_TRUSTED_VALIDATOR_X86_REXPREFIXES_H_
+#define NATIVE_CLIENT_SRC_TRUSTED_VALIDATOR_X86_REXPREFIXES_H_
+
+/* Defines the corresponding mask for the bits of the the Rex prefix. */
+#define NaClRexWMask 0x8
+#define NaClRexRMask 0x4
+#define NaClRexXMask 0x2
+#define NaClRexBMask 0x1
+
+/* Defines accessor functions for each of the rex bits. */
+static INLINE uint8_t NaClRexW(uint8_t prefix) {
+  return NaClHasBit(prefix, NaClRexWMask);
+}
+
+static INLINE uint8_t NaClRexR(uint8_t prefix) {
+  return NaClHasBit(prefix, NaClRexRMask);
+}
+
+static INLINE uint8_t NaClRexX(uint8_t prefix) {
+  return NaClHasBit(prefix, NaClRexXMask);
+}
+
+static INLINE uint8_t NaClRexB(uint8_t prefix) {
+  return NaClHasBit(prefix, NaClRexBMask);
+}
+
+/* Defines the range of rex prefix values. */
+#define NaClRexMin 0x40
+#define NaClRexMax 0x4F
+
+#endif  /* NATIVE_CLIENT_SRC_TRUSTED_VALIDATOR_X86_REXPREFIXES_H_ */