mirror of
https://github.com/brain-hackers/u-boot-brain
synced 2024-07-12 06:06:15 +09:00
867abdac5e
It seems the code tries to trick the compiler the argument is actually used. However compilers became too smart to fool them so easily an now warn. Gcc and clang don't seem to emit a warning when the argument is unused. If so it should be decorated with unused / (void). Signed-off-by: Jeroen Hofstee <jeroen@myspectrum.nl>
125 lines
3.5 KiB
C
125 lines
3.5 KiB
C
/*
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* Usefuls routines based on the LzmaTest.c file from LZMA SDK 4.65
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*
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* Copyright (C) 2007-2009 Industrie Dial Face S.p.A.
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* Luigi 'Comio' Mantellini (luigi.mantellini@idf-hit.com)
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*
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* Copyright (C) 1999-2005 Igor Pavlov
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*
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* SPDX-License-Identifier: GPL-2.0+
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*/
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/*
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* LZMA_Alone stream format:
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*
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* uchar Properties[5]
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* uint64 Uncompressed size
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* uchar data[*]
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*
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*/
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#include <config.h>
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#include <common.h>
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#include <watchdog.h>
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#ifdef CONFIG_LZMA
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#define LZMA_PROPERTIES_OFFSET 0
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#define LZMA_SIZE_OFFSET LZMA_PROPS_SIZE
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#define LZMA_DATA_OFFSET LZMA_SIZE_OFFSET+sizeof(uint64_t)
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#include "LzmaTools.h"
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#include "LzmaDec.h"
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#include <linux/string.h>
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#include <malloc.h>
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static void *SzAlloc(void *p, size_t size) { return malloc(size); }
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static void SzFree(void *p, void *address) { free(address); }
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int lzmaBuffToBuffDecompress (unsigned char *outStream, SizeT *uncompressedSize,
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unsigned char *inStream, SizeT length)
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{
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int res = SZ_ERROR_DATA;
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int i;
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ISzAlloc g_Alloc;
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SizeT outSizeFull = 0xFFFFFFFF; /* 4GBytes limit */
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SizeT outProcessed;
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SizeT outSize;
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SizeT outSizeHigh;
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ELzmaStatus state;
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SizeT compressedSize = (SizeT)(length - LZMA_PROPS_SIZE);
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debug ("LZMA: Image address............... 0x%p\n", inStream);
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debug ("LZMA: Properties address.......... 0x%p\n", inStream + LZMA_PROPERTIES_OFFSET);
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debug ("LZMA: Uncompressed size address... 0x%p\n", inStream + LZMA_SIZE_OFFSET);
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debug ("LZMA: Compressed data address..... 0x%p\n", inStream + LZMA_DATA_OFFSET);
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debug ("LZMA: Destination address......... 0x%p\n", outStream);
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memset(&state, 0, sizeof(state));
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outSize = 0;
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outSizeHigh = 0;
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/* Read the uncompressed size */
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for (i = 0; i < 8; i++) {
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unsigned char b = inStream[LZMA_SIZE_OFFSET + i];
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if (i < 4) {
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outSize += (UInt32)(b) << (i * 8);
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} else {
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outSizeHigh += (UInt32)(b) << ((i - 4) * 8);
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}
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}
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outSizeFull = (SizeT)outSize;
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if (sizeof(SizeT) >= 8) {
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/*
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* SizeT is a 64 bit uint => We can manage files larger than 4GB!
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*
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*/
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outSizeFull |= (((SizeT)outSizeHigh << 16) << 16);
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} else if (outSizeHigh != 0 || (UInt32)(SizeT)outSize != outSize) {
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/*
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* SizeT is a 32 bit uint => We cannot manage files larger than
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* 4GB! Assume however that all 0xf values is "unknown size" and
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* not actually a file of 2^64 bits.
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*
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*/
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if (outSizeHigh != (SizeT)-1 || outSize != (SizeT)-1) {
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debug ("LZMA: 64bit support not enabled.\n");
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return SZ_ERROR_DATA;
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}
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}
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debug("LZMA: Uncompresed size............ 0x%zx\n", outSizeFull);
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debug("LZMA: Compresed size.............. 0x%zx\n", compressedSize);
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g_Alloc.Alloc = SzAlloc;
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g_Alloc.Free = SzFree;
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/* Short-circuit early if we know the buffer can't hold the results. */
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if (outSizeFull != (SizeT)-1 && *uncompressedSize < outSizeFull)
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return SZ_ERROR_OUTPUT_EOF;
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/* Decompress */
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outProcessed = outSizeFull;
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WATCHDOG_RESET();
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res = LzmaDecode(
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outStream, &outProcessed,
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inStream + LZMA_DATA_OFFSET, &compressedSize,
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inStream, LZMA_PROPS_SIZE, LZMA_FINISH_END, &state, &g_Alloc);
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*uncompressedSize = outProcessed;
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debug("LZMA: Uncompresed ................ 0x%zx\n", outProcessed);
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if (res != SZ_OK) {
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return res;
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}
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return res;
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}
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#endif
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