^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1) /**
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2) * Copyright (c) 2016-present, Yann Collet, Facebook, Inc.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3) * All rights reserved.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 5) * This source code is licensed under the BSD-style license found in the
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 6) * LICENSE file in the root directory of https://github.com/facebook/zstd.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 7) * An additional grant of patent rights can be found in the PATENTS file in the
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 8) * same directory.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 9) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 10) * This program is free software; you can redistribute it and/or modify it under
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 11) * the terms of the GNU General Public License version 2 as published by the
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 12) * Free Software Foundation. This program is dual-licensed; you may select
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 13) * either version 2 of the GNU General Public License ("GPL") or BSD license
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 14) * ("BSD").
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 15) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 16)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 17) #ifndef MEM_H_MODULE
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 18) #define MEM_H_MODULE
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 19)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 20) /*-****************************************
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 21) * Dependencies
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 22) ******************************************/
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 23) #include <asm/unaligned.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 24) #include <linux/string.h> /* memcpy */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 25) #include <linux/types.h> /* size_t, ptrdiff_t */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 26)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 27) /*-****************************************
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 28) * Compiler specifics
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 29) ******************************************/
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 30) #define ZSTD_STATIC static inline
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 31)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 32) /*-**************************************************************
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 33) * Basic Types
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 34) *****************************************************************/
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 35) typedef uint8_t BYTE;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 36) typedef uint16_t U16;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 37) typedef int16_t S16;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 38) typedef uint32_t U32;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 39) typedef int32_t S32;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 40) typedef uint64_t U64;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 41) typedef int64_t S64;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 42) typedef ptrdiff_t iPtrDiff;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 43) typedef uintptr_t uPtrDiff;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 44)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 45) /*-**************************************************************
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 46) * Memory I/O
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 47) *****************************************************************/
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 48) ZSTD_STATIC unsigned ZSTD_32bits(void) { return sizeof(size_t) == 4; }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 49) ZSTD_STATIC unsigned ZSTD_64bits(void) { return sizeof(size_t) == 8; }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 50)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 51) #if defined(__LITTLE_ENDIAN)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 52) #define ZSTD_LITTLE_ENDIAN 1
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 53) #else
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 54) #define ZSTD_LITTLE_ENDIAN 0
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 55) #endif
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 56)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 57) ZSTD_STATIC unsigned ZSTD_isLittleEndian(void) { return ZSTD_LITTLE_ENDIAN; }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 58)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 59) ZSTD_STATIC U16 ZSTD_read16(const void *memPtr) { return get_unaligned((const U16 *)memPtr); }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 60)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 61) ZSTD_STATIC U32 ZSTD_read32(const void *memPtr) { return get_unaligned((const U32 *)memPtr); }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 62)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 63) ZSTD_STATIC U64 ZSTD_read64(const void *memPtr) { return get_unaligned((const U64 *)memPtr); }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 64)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 65) ZSTD_STATIC size_t ZSTD_readST(const void *memPtr) { return get_unaligned((const size_t *)memPtr); }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 66)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 67) ZSTD_STATIC void ZSTD_write16(void *memPtr, U16 value) { put_unaligned(value, (U16 *)memPtr); }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 68)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 69) ZSTD_STATIC void ZSTD_write32(void *memPtr, U32 value) { put_unaligned(value, (U32 *)memPtr); }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 70)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 71) ZSTD_STATIC void ZSTD_write64(void *memPtr, U64 value) { put_unaligned(value, (U64 *)memPtr); }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 72)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 73) /*=== Little endian r/w ===*/
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 74)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 75) ZSTD_STATIC U16 ZSTD_readLE16(const void *memPtr) { return get_unaligned_le16(memPtr); }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 76)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 77) ZSTD_STATIC void ZSTD_writeLE16(void *memPtr, U16 val) { put_unaligned_le16(val, memPtr); }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 78)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 79) ZSTD_STATIC U32 ZSTD_readLE24(const void *memPtr) { return ZSTD_readLE16(memPtr) + (((const BYTE *)memPtr)[2] << 16); }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 80)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 81) ZSTD_STATIC void ZSTD_writeLE24(void *memPtr, U32 val)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 82) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 83) ZSTD_writeLE16(memPtr, (U16)val);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 84) ((BYTE *)memPtr)[2] = (BYTE)(val >> 16);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 85) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 86)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 87) ZSTD_STATIC U32 ZSTD_readLE32(const void *memPtr) { return get_unaligned_le32(memPtr); }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 88)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 89) ZSTD_STATIC void ZSTD_writeLE32(void *memPtr, U32 val32) { put_unaligned_le32(val32, memPtr); }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 90)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 91) ZSTD_STATIC U64 ZSTD_readLE64(const void *memPtr) { return get_unaligned_le64(memPtr); }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 92)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 93) ZSTD_STATIC void ZSTD_writeLE64(void *memPtr, U64 val64) { put_unaligned_le64(val64, memPtr); }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 94)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 95) ZSTD_STATIC size_t ZSTD_readLEST(const void *memPtr)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 96) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 97) if (ZSTD_32bits())
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 98) return (size_t)ZSTD_readLE32(memPtr);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 99) else
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 100) return (size_t)ZSTD_readLE64(memPtr);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 101) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 102)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 103) ZSTD_STATIC void ZSTD_writeLEST(void *memPtr, size_t val)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 104) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 105) if (ZSTD_32bits())
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 106) ZSTD_writeLE32(memPtr, (U32)val);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 107) else
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 108) ZSTD_writeLE64(memPtr, (U64)val);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 109) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 110)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 111) /*=== Big endian r/w ===*/
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 112)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 113) ZSTD_STATIC U32 ZSTD_readBE32(const void *memPtr) { return get_unaligned_be32(memPtr); }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 114)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 115) ZSTD_STATIC void ZSTD_writeBE32(void *memPtr, U32 val32) { put_unaligned_be32(val32, memPtr); }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 116)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 117) ZSTD_STATIC U64 ZSTD_readBE64(const void *memPtr) { return get_unaligned_be64(memPtr); }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 118)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 119) ZSTD_STATIC void ZSTD_writeBE64(void *memPtr, U64 val64) { put_unaligned_be64(val64, memPtr); }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 120)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 121) ZSTD_STATIC size_t ZSTD_readBEST(const void *memPtr)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 122) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 123) if (ZSTD_32bits())
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 124) return (size_t)ZSTD_readBE32(memPtr);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 125) else
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 126) return (size_t)ZSTD_readBE64(memPtr);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 127) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 128)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 129) ZSTD_STATIC void ZSTD_writeBEST(void *memPtr, size_t val)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 130) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 131) if (ZSTD_32bits())
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 132) ZSTD_writeBE32(memPtr, (U32)val);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 133) else
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 134) ZSTD_writeBE64(memPtr, (U64)val);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 135) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 136)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 137) /* function safe only for comparisons */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 138) ZSTD_STATIC U32 ZSTD_readMINMATCH(const void *memPtr, U32 length)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 139) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 140) switch (length) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 141) default:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 142) case 4: return ZSTD_read32(memPtr);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 143) case 3:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 144) if (ZSTD_isLittleEndian())
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 145) return ZSTD_read32(memPtr) << 8;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 146) else
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 147) return ZSTD_read32(memPtr) >> 8;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 148) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 149) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 150)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 151) #endif /* MEM_H_MODULE */
Orange Pi5 kernel
Deprecated Linux kernel 5.10.110 for OrangePi 5/5B/5+ boards
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