| Gaurav Shah | 322536d | 2010-01-28 15:01:23 -0800 | [diff] [blame^] | 1 | /* Copyright (c) 2010 The Chromium OS Authors. All rights reserved. |
| 2 | * Use of this source code is governed by a BSD-style license that can be |
| 3 | * found in the LICENSE file. |
| 4 | */ |
| 5 | |
| 6 | /* Helper functions/wrappers for memory allocations, manipulation and |
| 7 | * comparison. |
| 8 | */ |
| 9 | |
| 10 | #ifndef VBOOT_REFERENCE_UTILITY_H_ |
| 11 | #define VBOOT_REFERENCE_UTILITY_H_ |
| 12 | |
| 13 | #include <string.h> |
| 14 | |
| 15 | /* Allocate [size] bytes and return a pointer to the allocated memory. Abort |
| 16 | * on error. |
| 17 | */ |
| 18 | void* Malloc(size_t size); |
| 19 | |
| 20 | /* Free memory pointed by [ptr] previously allocated by Malloc(). */ |
| 21 | void Free(void* ptr); |
| 22 | |
| 23 | /* Copy [n] bytes from [src] to [dest]. */ |
| 24 | void* Memcpy(void* dest, const void* src, size_t n); |
| 25 | |
| 26 | /* Compare [n] bytes starting at [s1] with [s2] and return 1 if they match, |
| 27 | * 0 if they don't. Time taken to perform the comparison is only dependent on |
| 28 | * [n] and not on the relationship of the match between [s1] and [s2]. |
| 29 | */ |
| 30 | int SafeMemcmp(const void* s1, const void* s2, size_t n); |
| 31 | |
| 32 | #endif /* VBOOT_REFERENCE_UTILITY_H_ */ |