Update NSS to 3.35-RTM

security/nss/lib/freebl/verified/kremlib_base.h

@@ -0,0 +1,191 @@
+/* Copyright 2016-2017 INRIA and Microsoft Corporation
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#ifndef __KREMLIB_BASE_H
+#define __KREMLIB_BASE_H
+
+#include <inttypes.h>
+#include <stdbool.h>
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+#include <time.h>
+
+/******************************************************************************/
+/* Some macros to ease compatibility                                          */
+/******************************************************************************/
+
+/* Define __cdecl and friends when using GCC, so that we can safely compile code
+ * that contains __cdecl on all platforms. Note that this is in a separate
+ * header so that Dafny-generated code can include just this file. */
+#ifndef _MSC_VER
+/* Use the gcc predefined macros if on a platform/architectures that set them.
+ * Otherwise define them to be empty. */
+#ifndef __cdecl
+#define __cdecl
+#endif
+#ifndef __stdcall
+#define __stdcall
+#endif
+#ifndef __fastcall
+#define __fastcall
+#endif
+#endif
+
+#ifdef __GNUC__
+#define inline __inline__
+#endif
+
+/* GCC-specific attribute syntax; everyone else gets the standard C inline
+ * attribute. */
+#ifdef __GNU_C__
+#ifndef __clang__
+#define force_inline inline __attribute__((always_inline))
+#else
+#define force_inline inline
+#endif
+#else
+#define force_inline inline
+#endif
+
+/******************************************************************************/
+/* Implementing C.fst                                                         */
+/******************************************************************************/
+
+/* Uppercase issue; we have to define lowercase versions of the C macros (as we
+ * have no way to refer to an uppercase *variable* in F*). */
+extern int exit_success;
+extern int exit_failure;
+
+/* This one allows the user to write C.EXIT_SUCCESS. */
+typedef int exit_code;
+
+void print_string(const char *s);
+void print_bytes(uint8_t *b, uint32_t len);
+
+/* The universal null pointer defined in C.Nullity.fst */
+#define C_Nullity_null(X) 0
+
+/* If some globals need to be initialized before the main, then kremlin will
+ * generate and try to link last a function with this type: */
+void kremlinit_globals(void);
+
+/******************************************************************************/
+/* Implementation of machine integers (possibly of 128-bit integers)          */
+/******************************************************************************/
+
+/* Integer types */
+typedef uint64_t FStar_UInt64_t, FStar_UInt64_t_;
+typedef int64_t FStar_Int64_t, FStar_Int64_t_;
+typedef uint32_t FStar_UInt32_t, FStar_UInt32_t_;
+typedef int32_t FStar_Int32_t, FStar_Int32_t_;
+typedef uint16_t FStar_UInt16_t, FStar_UInt16_t_;
+typedef int16_t FStar_Int16_t, FStar_Int16_t_;
+typedef uint8_t FStar_UInt8_t, FStar_UInt8_t_;
+typedef int8_t FStar_Int8_t, FStar_Int8_t_;
+
+static inline uint32_t
+rotate32_left(uint32_t x, uint32_t n)
+{
+    /*  assert (n<32); */
+    return (x << n) | (x >> (32 - n));
+}
+static inline uint32_t
+rotate32_right(uint32_t x, uint32_t n)
+{
+    /*  assert (n<32); */
+    return (x >> n) | (x << (32 - n));
+}
+
+/* Constant time comparisons */
+static inline uint8_t
+FStar_UInt8_eq_mask(uint8_t x, uint8_t y)
+{
+    x = ~(x ^ y);
+    x &= x << 4;
+    x &= x << 2;
+    x &= x << 1;
+    return (int8_t)x >> 7;
+}
+
+static inline uint8_t
+FStar_UInt8_gte_mask(uint8_t x, uint8_t y)
+{
+    return ~(uint8_t)(((int32_t)x - y) >> 31);
+}
+
+static inline uint16_t
+FStar_UInt16_eq_mask(uint16_t x, uint16_t y)
+{
+    x = ~(x ^ y);
+    x &= x << 8;
+    x &= x << 4;
+    x &= x << 2;
+    x &= x << 1;
+    return (int16_t)x >> 15;
+}
+
+static inline uint16_t
+FStar_UInt16_gte_mask(uint16_t x, uint16_t y)
+{
+    return ~(uint16_t)(((int32_t)x - y) >> 31);
+}
+
+static inline uint32_t
+FStar_UInt32_eq_mask(uint32_t x, uint32_t y)
+{
+    x = ~(x ^ y);
+    x &= x << 16;
+    x &= x << 8;
+    x &= x << 4;
+    x &= x << 2;
+    x &= x << 1;
+    return ((int32_t)x) >> 31;
+}
+
+static inline uint32_t
+FStar_UInt32_gte_mask(uint32_t x, uint32_t y)
+{
+    return ~((uint32_t)(((int64_t)x - y) >> 63));
+}
+
+static inline uint64_t
+FStar_UInt64_eq_mask(uint64_t x, uint64_t y)
+{
+    x = ~(x ^ y);
+    x &= x << 32;
+    x &= x << 16;
+    x &= x << 8;
+    x &= x << 4;
+    x &= x << 2;
+    x &= x << 1;
+    return ((int64_t)x) >> 63;
+}
+
+static inline uint64_t
+FStar_UInt64_gte_mask(uint64_t x, uint64_t y)
+{
+    uint64_t low63 =
+        ~((uint64_t)((int64_t)((int64_t)(x & UINT64_C(0x7fffffffffffffff)) -
+                               (int64_t)(y & UINT64_C(0x7fffffffffffffff))) >>
+                     63));
+    uint64_t high_bit =
+        ~((uint64_t)((int64_t)((int64_t)(x & UINT64_C(0x8000000000000000)) -
+                               (int64_t)(y & UINT64_C(0x8000000000000000))) >>
+                     63));
+    return low63 & high_bit;
+}
+
+#endif