d0b38cbc3b
- Import zstd-1.3.6 from upstream - Add zstd's module.c file - Add the zstd module to Makefile.core.def Import zstd-1.3.6 from upstream [1]. Only the files need for decompression are imported. I used the latest zstd release, which includes patches [2] to build cleanly in GRUB. I included the script used to import zstd-1.3.6 below at the bottom of the commit message. Upstream zstd commit hash: 4fa456d7f12f8b27bd3b2f5dfd4f46898cb31c24 Upstream zstd commit name: Merge pull request #1354 from facebook/dev Zstd requires some posix headers, which it gets from posix_wrap. This can be checked by inspecting the .Po files generated by automake, which contain the header dependencies. After building run the command `cat grub-core/lib/zstd/.deps-core/*.Po` to see the dependencies [3]. The only OS dependencies are: - stddef.h, which is already a dependency in posix_wrap, and used for size_t by lzo and xz. - stdarg.h, which comes from the grub/misc.h header, and we don't use in zstd. All the types like uint64_t are typedefed to grub_uint64_t under the hood. The only exception is size_t, which comes from stddef.h. This is already the case for lzo and xz. I don't think there are any cross-compilation concerns, because cross-compilers provide their own system headers (and it would already be broken). [1] https://github.com/facebook/zstd/releases/tag/v1.3.6 [2] https://github.com/facebook/zstd/pull/1344 [3] https://gist.github.com/terrelln/7a16b92f5a1b3aecf980f944b4a966c4 ``` curl -L -O https://github.com/facebook/zstd/releases/download/v1.3.6/zstd-1.3.6.tar.gz curl -L -O https://github.com/facebook/zstd/releases/download/v1.3.6/zstd-1.3.6.tar.gz.sha256 sha256sum --check zstd-1.3.6.tar.gz.sha256 tar xzf zstd-1.3.6.tar.gz SRC_LIB="zstd-1.3.6/lib" DST_LIB="grub-core/lib/zstd" rm -rf $DST_LIB mkdir -p $DST_LIB cp $SRC_LIB/zstd.h $DST_LIB/ cp $SRC_LIB/common/*.[hc] $DST_LIB/ cp $SRC_LIB/decompress/*.[hc] $DST_LIB/ rm $DST_LIB/{pool.[hc],threading.[hc]} rm -rf zstd-1.3.6* echo SUCCESS! ``` Signed-off-by: Nick Terrell <terrelln@fb.com> Reviewed-by: Daniel Kiper <daniel.kiper@oracle.com>
81 lines
2.5 KiB
C
81 lines
2.5 KiB
C
/*
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* Copyright (c) 2016-present, Yann Collet, Facebook, Inc.
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* All rights reserved.
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*
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* This source code is licensed under both the BSD-style license (found in the
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* LICENSE file in the root directory of this source tree) and the GPLv2 (found
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* in the COPYING file in the root directory of this source tree).
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* You may select, at your option, one of the above-listed licenses.
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*/
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/*-*************************************
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* Dependencies
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***************************************/
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#include <stdlib.h> /* malloc, calloc, free */
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#include <string.h> /* memset */
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#include "error_private.h"
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#include "zstd_internal.h"
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/*-****************************************
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* Version
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******************************************/
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unsigned ZSTD_versionNumber(void) { return ZSTD_VERSION_NUMBER; }
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const char* ZSTD_versionString(void) { return ZSTD_VERSION_STRING; }
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/*-****************************************
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* ZSTD Error Management
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******************************************/
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/*! ZSTD_isError() :
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* tells if a return value is an error code */
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unsigned ZSTD_isError(size_t code) { return ERR_isError(code); }
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/*! ZSTD_getErrorName() :
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* provides error code string from function result (useful for debugging) */
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const char* ZSTD_getErrorName(size_t code) { return ERR_getErrorName(code); }
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/*! ZSTD_getError() :
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* convert a `size_t` function result into a proper ZSTD_errorCode enum */
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ZSTD_ErrorCode ZSTD_getErrorCode(size_t code) { return ERR_getErrorCode(code); }
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/*! ZSTD_getErrorString() :
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* provides error code string from enum */
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const char* ZSTD_getErrorString(ZSTD_ErrorCode code) { return ERR_getErrorString(code); }
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/*=**************************************************************
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* Custom allocator
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****************************************************************/
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void* ZSTD_malloc(size_t size, ZSTD_customMem customMem)
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{
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if (customMem.customAlloc)
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return customMem.customAlloc(customMem.opaque, size);
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return malloc(size);
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}
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void* ZSTD_calloc(size_t size, ZSTD_customMem customMem)
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{
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if (customMem.customAlloc) {
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/* calloc implemented as malloc+memset;
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* not as efficient as calloc, but next best guess for custom malloc */
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void* const ptr = customMem.customAlloc(customMem.opaque, size);
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memset(ptr, 0, size);
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return ptr;
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}
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return calloc(1, size);
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}
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void ZSTD_free(void* ptr, ZSTD_customMem customMem)
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{
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if (ptr!=NULL) {
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if (customMem.customFree)
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customMem.customFree(customMem.opaque, ptr);
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else
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free(ptr);
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}
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}
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