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a1e9315fa2
This includes some tweaks to README.md and makefile to ensure the directions in the former for building a bootimage actually work.
67 lines
1.6 KiB
C++
67 lines
1.6 KiB
C++
/* Copyright (c) 2008-2014, Avian Contributors
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Permission to use, copy, modify, and/or distribute this software
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for any purpose with or without fee is hereby granted, provided
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that the above copyright notice and this permission notice appear
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in all copies.
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There is NO WARRANTY for this software. See license.txt for
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details. */
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#include "avian/lzma-util.h"
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#include "C/LzmaDec.h"
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using namespace vm;
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namespace {
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int32_t read4(const uint8_t* in)
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{
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return (static_cast<int32_t>(in[3]) << 24)
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| (static_cast<int32_t>(in[2]) << 16)
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| (static_cast<int32_t>(in[1]) << 8) | (static_cast<int32_t>(in[0]));
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}
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} // namespace
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namespace vm {
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uint8_t* decodeLZMA(System* s,
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avian::util::Alloc* a,
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uint8_t* in,
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unsigned inSize,
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unsigned* outSize)
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{
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const unsigned PropHeaderSize = 5;
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const unsigned HeaderSize = 13;
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int32_t outSize32 = read4(in + PropHeaderSize);
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expect(s, outSize32 >= 0);
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SizeT outSizeT = outSize32;
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uint8_t* out = static_cast<uint8_t*>(a->allocate(outSize32));
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SizeT inSizeT = inSize;
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LzmaAllocator allocator(a);
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ELzmaStatus status;
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int result = LzmaDecode(out,
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&outSizeT,
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in + HeaderSize,
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&inSizeT,
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in,
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PropHeaderSize,
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LZMA_FINISH_END,
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&status,
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&(allocator.allocator));
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expect(s, result == SZ_OK);
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expect(s, status == LZMA_STATUS_FINISHED_WITH_MARK);
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*outSize = outSize32;
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return out;
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}
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} // namespace vm
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