| 1 | /* |
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| 2 | * memcpy.c - architecture independent memory copy functions definition. |
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| 3 | * |
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| 4 | * Author ALain Greiner (2016) |
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| 5 | * |
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| 6 | * Copyright (c) UPMC Sorbonne Universites |
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| 7 | * |
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| 8 | * This file is part of ALMOS-MKH. |
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| 9 | * |
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| 10 | * ALMOS-MKH is free software; you can redistribute it and/or modify it |
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| 11 | * under the terms of the GNU General Public License as published by |
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| 12 | * the Free Software Foundation; version 2.0 of the License. |
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| 13 | * |
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| 14 | * ALMOS-MKH is distributed in the hope that it will be useful, but |
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| 15 | * WITHOUT ANY WARRANTY; without even the implied warranty of |
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| 16 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU |
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| 17 | * General Public License for more details. |
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| 18 | * |
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| 19 | * You should have received a copy of the GNU General Public License |
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| 20 | * along with ALMOS-MKH; if not, write to the Free Software Foundation, |
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| 21 | * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA |
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| 22 | */ |
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| 23 | |
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| 24 | #include <hal_kernel_types.h> |
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| 25 | |
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| 26 | |
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| 27 | /******************************************************************************************* |
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| 28 | * This function copies a source buffer to a destination buffer. |
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| 29 | * There is no alignment constraint, but the performance is improved if the buffers |
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| 30 | * are both aligned on a 32 bits word boundary. |
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| 31 | ******************************************************************************************* |
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| 32 | * @ dst : pointer on destination buffer. |
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| 33 | * @ src : pointer on source buffer. |
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| 34 | * @ size : number of bytes. |
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| 35 | * @ return pointer on destination buffer. |
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| 36 | ******************************************************************************************/ |
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| 37 | void * memcpy( void * dst, |
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| 38 | const void * src, |
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| 39 | uint32_t size ); |
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| 40 | |
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| 41 | /******************************************************************************************* |
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| 42 | * This function sets a constant value in each byte of a target buffer. |
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| 43 | ******************************************************************************************* |
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| 44 | * @ dst : pointer on destination buffer. |
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| 45 | * @ val : constant value (cast to uint8_t). |
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| 46 | * @ size : number of bytes. |
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| 47 | * @ return pointer on destination buffer. |
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| 48 | ******************************************************************************************/ |
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| 49 | void * memset( void * dst, |
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| 50 | uint32_t val, |
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| 51 | uint32_t size); |
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| 52 | |
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| 53 | /******************************************************************************************* |
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| 54 | * This function compares two buffers bytewise. |
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| 55 | ******************************************************************************************* |
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| 56 | * @s1 : pointer on a buffer |
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| 57 | * @s2 : pointer on another buffer to compare with @s1 |
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| 58 | * @n : number of bytes to compare |
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| 59 | * @return : = 0 if s1 == s2 means structural or physical equality between @s1 and @s2. |
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| 60 | * < 0 if s1[i] < s2[i] means @s1[i] is lesser than @s2[i] current one |
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| 61 | * > 0 if s1[i] > s2[i] means @s1[i] is greater than @s2[i] current one. |
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| 62 | * Note: i is an index to the current byte of the buffer. |
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| 63 | ******************************************************************************************/ |
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| 64 | int memcmp( const void * s1, |
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| 65 | const void * s2, |
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| 66 | uint32_t n); |
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| 67 | |
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