| /* |
| * Copyright (C) 2016 The Android Open Source Project |
| * |
| * 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. |
| */ |
| |
| #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_ */ |