1 files changed, 134 insertions, 0 deletions
diff --git a/refimpl/bvb_sysdeps.h b/refimpl/bvb_sysdeps.h
new file mode 100644
index 0000000..ed16f2b
--- /dev/null
+++ b/refimpl/bvb_sysdeps.h
@@ -0,0 +1,134 @@
+/*
+ * Copyright (C) 2016 The Android Open Source Project
+ *
+ * Permission is hereby granted, free of charge, to any person
+ * obtaining a copy of this software and associated documentation
+ * files (the "Software"), to deal in the Software without
+ * restriction, including without limitation the rights to use, copy,
+ * modify, merge, publish, distribute, sublicense, and/or sell copies
+ * of the Software, and to permit persons to whom the Software is
+ * furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be
+ * included in all copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
+ * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
+ * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
+ * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS
+ * BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN
+ * ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
+ * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
+ * SOFTWARE.
+ */
+
+#if !defined (BVB_INSIDE_BVB_REFIMPL_H) && !defined (BVB_REFIMPL_COMPILATION)
+#error "Never include this file directly, include bvb_refimpl.h instead."
+#endif
+
+#ifndef BVB_SYSDEPS_H_
+#define BVB_SYSDEPS_H_
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+/* Change these includes to match your platform to bring in the
+ * equivalent types available in a normal C runtime, as well as
+ * printf()-format specifiers such as PRIx64.
+ */
+#include <stddef.h>
+#include <stdint.h>
+#include <inttypes.h>
+
+#ifdef BVB_ENABLE_DEBUG
+/* Aborts the program if |expr| is false.
+ *
+ * This has no effect unless BVB_ENABLE_DEBUG is defined.
+ */
+#define bvb_assert(expr) do { if (!(expr)) { \
+    bvb_error("assert fail: %s at %s:%d\n", \
+              #expr, __FILE__, __LINE__); }} while(0)
+#else
+#define bvb_assert(expr)
+#endif
+
+/* Size in bytes used for word-alignment.
+ *
+ * Change this to match your architecture - must be a power of two.
+ */
+#define BVB_WORD_ALIGNMENT_SIZE 8
+
+/* Aborts the program if |addr| is not word-aligned.
+ *
+ * This has no effect unless BVB_ENABLE_DEBUG is defined.
+ */
+#define bvb_assert_word_aligned(addr) \
+    bvb_assert((((uintptr_t) addr) & (BVB_WORD_ALIGNMENT_SIZE-1)) == 0)
+
+/* Compare |n| bytes in |src1| and |src2|.
+ *
+ * Returns an integer less than, equal to, or greater than zero if the
+ * first |n| bytes of |src1| is found, respectively, to be less than,
+ * to match, or be greater than the first |n| bytes of |src2|. */
+int bvb_memcmp(const void* src1, const void* src2, size_t n);
+
+/* Copy |n| bytes from |src| to |dest|. */
+void* bvb_memcpy(void* dest, const void* src, size_t n);
+
+/* Set |n| bytes starting at |s| to |c|.  Returns |dest|. */
+void* bvb_memset(void* dest, const int c, size_t n);
+
+/* Compare |n| bytes starting at |s1| with |s2| and return 0 if they
+ * match, 1 if they don't.  Returns 0 if |n|==0, since no bytes
+ * mismatched.
+ *
+ * Time taken to perform the comparison is only dependent on |n| and
+ * not on the relationship of the match between |s1| and |s2|.
+ *
+ * Note that unlike bvb_memcmp(), this only indicates inequality, not
+ * whether |s1| is less than or greater than |s2|.
+ */
+int bvb_safe_memcmp(const void* s1, const void* s2, size_t n);
+
+#ifdef BVB_ENABLE_DEBUG
+/* printf()-style function, used for diagnostics.
+ *
+ * This has no effect unless BVB_ENABLE_DEBUG is defined.
+ */
+void bvb_debug(const char* format, ...) __attribute__((format(printf, 1, 2)));
+#else
+static inline void bvb_debug(const char* format, ...)
+    __attribute__((format(printf, 1, 2)));
+static inline void bvb_debug(const char* format, ...) {}
+#endif
+
+/* Prints out a message (defined by |format|, printf()-style) and
+ * aborts the program or reboots the device.
+ *
+ * Unlike bvb_debug(), this function does not depend on BVB_ENABLE_DEBUG.
+ */
+void bvb_error(const char* format, ...) __attribute__((format(printf, 1, 2)));
+
+/* Allocates |size| bytes. Returns NULL if no memory is available,
+ * otherwise a pointer to the allocated memory.
+ *
+ * The memory is not initialized.
+ *
+ * The pointer returned is guaranteed to be word-aligned.
+ *
+ * The memory should be freed with bvb_free() when you are done with it.
+ */
+void* bvb_malloc(size_t size);
+
+/* Frees memory previously allocated with bvb_malloc(). */
+void bvb_free(void* ptr);
+
+/* Returns the lenght of |str|, excluding the terminating NUL-byte. */
+size_t bvb_strlen(const char* str);
+
+#ifdef __cplusplus
+}
+#endif
+
+#endif  /* BVB_SYSDEPS_H_ */