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Reorganize zstd_deps.h and mem.h + replace mem.h for the kernel

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This commit is contained in:
Nick Terrell
2020-09-24 14:22:56 -07:00
parent 260fc75028
commit 9ae0483858
9 changed files with 409 additions and 93 deletions
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28
contrib/linux-kernel/zstd_deps.h
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@ -8,36 +8,26 @@
* You may select, at your option, one of the above-listed licenses.
*/
/*
* This file provides common libc dependencies that zstd requires.
* The purpose is to allow replacing this file with a custom implementation
* to compile zstd without libc support.
*/
/* Need:
* NULL
* INT_MAX
* UINT_MAX
* ZSTD_memcpy()
* ZSTD_memset()
* ZSTD_memmove()
* BYTE
* S16
* U16
* U32
* U64
* size_t
* ptrdiff_t
* INT_MAX
* UINT_MAX
*/
#ifndef ZSTD_DEPS_COMMON
#define ZSTD_DEPS_COMMON
#include <linux/limits.h>
#include <linux/types.h>
#include <linux/stddef.h>
typedef uint8_t BYTE;
typedef uint16_t U16;
typedef int16_t S16;
typedef uint32_t U32;
typedef int32_t S32;
typedef uint64_t U64;
typedef int64_t S64;
#define ZSTD_memcpy(d,s,n) __builtin_memcpy((d),(s),(n))
#define ZSTD_memmove(d,s,n) __builtin_memmove((d),(s),(n))
#define ZSTD_memset(d,s,n) __builtin_memset((d),(s),(n))
@ -74,7 +64,7 @@ typedef int64_t S64;
#include <linux/math64.h>
static U64 ZSTD_div64(U64 dividend, U32 divisor) {
static uint64_t ZSTD_div64(uint64_t dividend, uint32_t divisor) {
return div_u64(dividend, divisor);
}