dany/u-boot-megous
1
0
Fork 0
mirror of https://xff.cz/git/u-boot/ synced 2025-09-02 01:02:19 +02:00
Code Issues Packages Projects Releases Wiki Activity

lib: add Zstandard decompression support

Browse Source 
Add the zstd library from Linux kernel (only decompression support).
There are minimal changes to build with U-Boot, otherwise the files are
identical to Linux commit dc35da16 from March 2018, the files had not
been touched since in kernel. Also SPDX lincese tags were added.

Signed-off-by: Marek Behún <marek.behun@nic.cz>
This commit is contained in:
Marek Behún
2019-04-29 22:40:44 +02:00
committed by Tom Rini
parent 83a486b6fd
commit 8509f22aac
16 changed files with 7702 additions and 0 deletions
Download Patch File Download Diff File Expand all files Collapse all files

65
lib/zstd/zstd_common.c Normal file
View File

@@ -0,0 +1,65 @@
// SPDX-License-Identifier: (GPL-2.0 or BSD-3-Clause-Clear)
/**
* Copyright (c) 2016-present, Yann Collet, Facebook, Inc.
* All rights reserved.
*/
/*-*************************************
* Dependencies
***************************************/
#include "error_private.h"
#include "zstd_internal.h" /* declaration of ZSTD_isError, ZSTD_getErrorName, ZSTD_getErrorCode, ZSTD_getErrorString, ZSTD_versionNumber */
#include <linux/kernel.h>
/*=**************************************************************
* Custom allocator
****************************************************************/
#define stack_push(stack, size) \
({ \
void *const ptr = ZSTD_PTR_ALIGN((stack)->ptr); \
(stack)->ptr = (char *)ptr + (size); \
(stack)->ptr <= (stack)->end ? ptr : NULL; \
})
ZSTD_customMem ZSTD_initStack(void *workspace, size_t workspaceSize)
{
ZSTD_customMem stackMem = {ZSTD_stackAlloc, ZSTD_stackFree, workspace};
ZSTD_stack *stack = (ZSTD_stack *)workspace;
/* Verify preconditions */
if (!workspace || workspaceSize < sizeof(ZSTD_stack) || workspace != ZSTD_PTR_ALIGN(workspace)) {
ZSTD_customMem error = {NULL, NULL, NULL};
return error;
}
/* Initialize the stack */
stack->ptr = workspace;
stack->end = (char *)workspace + workspaceSize;
stack_push(stack, sizeof(ZSTD_stack));
return stackMem;
}
void *ZSTD_stackAllocAll(void *opaque, size_t *size)
{
ZSTD_stack *stack = (ZSTD_stack *)opaque;
*size = (BYTE const *)stack->end - (BYTE *)ZSTD_PTR_ALIGN(stack->ptr);
return stack_push(stack, *size);
}
void *ZSTD_stackAlloc(void *opaque, size_t size)
{
ZSTD_stack *stack = (ZSTD_stack *)opaque;
return stack_push(stack, size);
}
void ZSTD_stackFree(void *opaque, void *address)
{
(void)opaque;
(void)address;
}
void *ZSTD_malloc(size_t size, ZSTD_customMem customMem) { return customMem.customAlloc(customMem.opaque, size); }
void ZSTD_free(void *ptr, ZSTD_customMem customMem)
{
if (ptr != NULL)
customMem.customFree(customMem.opaque, ptr);
}