diff options
author | Patrick Georgi <patrick.georgi@coresystems.de> | 2009-09-14 13:29:27 +0000 |
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committer | Patrick Georgi <patrick.georgi@coresystems.de> | 2009-09-14 13:29:27 +0000 |
commit | b7b56dd8fbe123958e196f396dab5ff3000b68dd (patch) | |
tree | 19972cda7bd87504eeea26ed90535e4aa7585da4 /util/cbfstool/lzma/minilzma.cc | |
parent | c8d4a05f8f5df06bd98f8ee7d5ef46e61986e6b0 (diff) |
New cbfstool. Works without mmap or fork/exec and
supports fixed location files. Some parts are salvaged
from the pre-commit version (esp. stage and payload creation),
others are completely rewritten (eg. the main loop that handles
file addition)
Also adapt newconfig (we don't need cbfs/tools anymore) and fix
some minor issues in the cbfstool-README.
Signed-off-by: Patrick Georgi <patrick.georgi@coresystems.de>
Acked-by: Stefan Reinauer <stepan@coresystems.de>
git-svn-id: svn://svn.coreboot.org/coreboot/trunk@4630 2b7e53f0-3cfb-0310-b3e9-8179ed1497e1
Diffstat (limited to 'util/cbfstool/lzma/minilzma.cc')
-rw-r--r-- | util/cbfstool/lzma/minilzma.cc | 318 |
1 files changed, 318 insertions, 0 deletions
diff --git a/util/cbfstool/lzma/minilzma.cc b/util/cbfstool/lzma/minilzma.cc new file mode 100644 index 0000000000..5437b59946 --- /dev/null +++ b/util/cbfstool/lzma/minilzma.cc @@ -0,0 +1,318 @@ +/* + * minimal lzma implementation + * + * Copyright (C) 2002 Eric Biederman + * Copyright (C) 2005 Joel Yliluoma + * Copyright (C) 2007 coresystems GmbH + * (Adapted by Stefan Reinauer <stepan@coresystems.de> for coresystems GmbH) + * Copyright (C) 2007 Patrick Georgi <patrick@georgi-clan.de> + * + * This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License as published by + * the Free Software Foundation; either version 2 of the License, or + * (at your option) any later version. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + * + * You should have received a copy of the GNU General Public License + * along with this program; if not, write to the Free Software + * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA, 02110-1301 USA + */ + +#include "C/Common/MyInitGuid.h" +#include "C/7zip/Compress/LZMA/LZMAEncoder.h" + +#include <sys/types.h> +#include <sys/stat.h> +#include <unistd.h> +#include <errno.h> +#include <cstring> +#include <cstdio> +#include <cstdlib> +#include <cctype> + +#include <vector> +#include <algorithm> +#include <stdint.h> + +const std::vector<unsigned char> LZMACompress + (const std::vector<unsigned char>& buf); + +const std::vector<unsigned char> LZMADeCompress + (const std::vector<unsigned char>& buf); + +static inline uint16_t R16(const void* p) +{ + const unsigned char* data = (const unsigned char*)p; + return (data[0] << 0) | (data[1] << 8); +} +static inline uint32_t R32(const void* p) +{ + const unsigned char* data = (const unsigned char*)p; + return R16(data) | (R16(data+2) << 16); +} + +#define L (uint64_t) + +static inline uint64_t R64(const void* p) +{ + const unsigned char* data = (const unsigned char*)p; + return (L R32(data)) | ((L R32(data+4)) << 32); +} + +#undef L + +static UInt32 SelectDictionarySizeFor(unsigned datasize) +{ + #if 1 + return datasize; + #else +#ifdef __GNUC__ + /* gnu c can optimize this switch statement into a fast binary + * search, but it cannot do so for the list of the if statements. + */ + switch(datasize) + { + case 0 ... 512 : return 512; + case 513 ... 1024: return 2048; + case 1025 ... 4096: return 8192; + case 4097 ... 16384: return 32768; + case 16385 ... 65536: return 528288; + case 65537 ... 528288: return 1048576*4; + case 528289 ... 786432: return 1048576*16; + default: return 1048576*32; + } +#else + if(datasize <= 512) return 512; + if(datasize <= 1024) return 1024; + if(datasize <= 4096) return 4096; + if(datasize <= 16384) return 32768; + if(datasize <= 65536) return 528288; + if(datasize <= 528288) return 1048576*4; + if(datasize <= 786432) reutrn 1048576*16; + return 32*1048576; +#endif + #endif +} + + +class CInStreamRam: public ISequentialInStream, public CMyUnknownImp +{ + const std::vector<unsigned char>& input; + size_t Pos; +public: + MY_UNKNOWN_IMP + + CInStreamRam(const std::vector<unsigned char>& buf) : input(buf), Pos(0) + { + } + virtual ~CInStreamRam() {} + + STDMETHOD(Read)(void *data, UInt32 size, UInt32 *processedSize); +}; + +STDMETHODIMP CInStreamRam::Read(void *data, UInt32 size, UInt32 *processedSize) +{ + UInt32 remain = input.size() - Pos; + if (size > remain) size = remain; + + std::memcpy(data, &input[Pos], size); + Pos += size; + + if(processedSize != NULL) *processedSize = size; + + return S_OK; +} + +class COutStreamRam: public ISequentialOutStream, public CMyUnknownImp +{ + std::vector<Byte> result; + size_t Pos; +public: + MY_UNKNOWN_IMP + + COutStreamRam(): result(), Pos(0) { } + virtual ~COutStreamRam() { } + + void Reserve(unsigned n) { result.reserve(n); } + const std::vector<Byte>& Get() const { return result; } + + HRESULT WriteByte(Byte b) + { + if(Pos >= result.size()) result.resize(Pos+1); + result[Pos++] = b; + return S_OK; + } + + STDMETHOD(Write)(const void *data, UInt32 size, UInt32 *processedSize); +}; + +STDMETHODIMP COutStreamRam::Write(const void *data, UInt32 size, UInt32 *processedSize) +{ + if(Pos+size > result.size()) result.resize(Pos+size); + + std::memcpy(&result[Pos], data, size); + if(processedSize != NULL) *processedSize = size; + Pos += size; + return S_OK; +} + +const std::vector<unsigned char> LZMACompress(const std::vector<unsigned char>& buf) +{ + if(buf.empty()) return buf; + + const UInt32 dictionarysize = SelectDictionarySizeFor(buf.size()); + + NCompress::NLZMA::CEncoder *encoderSpec = new NCompress::NLZMA::CEncoder; + CMyComPtr<ICompressCoder> encoder = encoderSpec; + const PROPID propIDs[] = + { + NCoderPropID::kAlgorithm, + NCoderPropID::kDictionarySize, + NCoderPropID::kNumFastBytes, + }; + const unsigned kNumProps = sizeof(propIDs) / sizeof(propIDs[0]); + PROPVARIANT properties[kNumProps]; + properties[0].vt = VT_UI4; properties[0].ulVal = (UInt32)2; + properties[1].vt = VT_UI4; properties[1].ulVal = (UInt32)dictionarysize; + properties[2].vt = VT_UI4; properties[2].ulVal = (UInt32)64; + + if (encoderSpec->SetCoderProperties(propIDs, properties, kNumProps) != S_OK) + { + Error: + return std::vector<unsigned char> (); + } + + COutStreamRam *const outStreamSpec = new COutStreamRam; + CMyComPtr<ISequentialOutStream> outStream = outStreamSpec; + CInStreamRam *const inStreamSpec = new CInStreamRam(buf); + CMyComPtr<ISequentialInStream> inStream = inStreamSpec; + + outStreamSpec->Reserve(buf.size()); + + if (encoderSpec->WriteCoderProperties(outStream) != S_OK) goto Error; + + for (unsigned i = 0; i < 8; i++) + { + UInt64 t = (UInt64)buf.size(); + outStreamSpec->WriteByte((Byte)((t) >> (8 * i))); + } + + HRESULT lzmaResult = encoder->Code(inStream, outStream, 0, 0, 0); + if (lzmaResult != S_OK) goto Error; + + return outStreamSpec->Get(); +} + +#undef RC_NORMALIZE + +#include "C/7zip/Decompress/LzmaDecode.h" +#include "C/7zip/Decompress/LzmaDecode.c" + +const std::vector<unsigned char> LZMADeCompress + (const std::vector<unsigned char>& buf) +{ + if(buf.size() <= 5+8) return std::vector<unsigned char> (); + + uint_least64_t out_sizemax = R64(&buf[5]); + + std::vector<unsigned char> result(out_sizemax); + + CLzmaDecoderState state; + LzmaDecodeProperties(&state.Properties, &buf[0], LZMA_PROPERTIES_SIZE); + state.Probs = new CProb[LzmaGetNumProbs(&state.Properties)]; + + SizeT in_done; + SizeT out_done; + LzmaDecode(&state, &buf[13], buf.size()-13, &in_done, + &result[0], result.size(), &out_done); + + delete[] state.Probs; + + result.resize(out_done); + return result; +} + +#ifndef COMPACT +int main(int argc, char *argv[]) +{ + char *s; + FILE *f, *infile, *outfile; + int c; + + if (argc != 4) { + std::fprintf(stderr, "'lzma e file1 file2' encodes file1 into file2.\n" + "'lzma d file2 file1' decodes file2 into file1.\n"); + + return EXIT_FAILURE; + } + if (argc == 4) { + if ((s = argv[1], s[1] || strpbrk(s, "DEde") == NULL) + || (s = argv[2], (infile = fopen(s, "rb")) == NULL) + || (s = argv[3], (outfile = fopen(s, "wb")) == NULL)) { + std::fprintf(stderr, "??? %s\n", s); + return EXIT_FAILURE; + } + } + + struct stat fs; + int si; + if (fstat(fileno(infile), &fs)) { + std::perror(strerror(errno)); + return EXIT_FAILURE; + } + si=fs.st_size; + + char *Buf=(char *)malloc(si); + fread(Buf,si, 1, infile); + + std::vector<unsigned char> result; + if (toupper(*argv[1]) == 'E') + result = LZMACompress(std::vector<unsigned char>(Buf,Buf+si)); + else + result = LZMADeCompress(std::vector<unsigned char>(Buf,Buf+si)); + + fwrite(&result[0], result.size(), 1, outfile); + fclose(infile); + fclose(outfile); + return EXIT_SUCCESS; +} +#else +extern "C" { + +/** + * Compress a buffer with lzma + * Don't copy the result back if it is too large. + * @param in a pointer to the buffer + * @param in_len the length in bytes + * @param out a pointer to a buffer of at least size in_len + * @param out_len a pointer to the compressed length of in + */ + +void do_lzma_compress(char *in, int in_len, char *out, int *out_len) { + std::vector<unsigned char> result; + result = LZMACompress(std::vector<unsigned char>(in, in + in_len)); + *out_len = result.size(); + if (*out_len < in_len) + std::memcpy(out, &result[0], *out_len); +} + +void do_lzma_uncompress(char *dst, int dst_len, char *src, int src_len) { + std::vector<unsigned char> result; + result = LZMADeCompress(std::vector<unsigned char>(src, src + src_len)); + if (result.size() <= (SizeT)dst_len) + std::memcpy(dst, &result[0], result.size()); + else + { + fprintf(stderr, "Not copying %d bytes to %d-byte buffer!\n", + (unsigned int)result.size(), dst_len); + exit(1); + } +} + +} +#endif + |