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Diffstat (limited to 'linkers/rld-compression.cpp')
| -rw-r--r-- | linkers/rld-compression.cpp | 303 |
1 files changed, 0 insertions, 303 deletions
diff --git a/linkers/rld-compression.cpp b/linkers/rld-compression.cpp deleted file mode 100644 index 2abeff1..0000000 --- a/linkers/rld-compression.cpp +++ /dev/null @@ -1,303 +0,0 @@ -/* - * Copyright (c) 2012, Chris Johns <chrisj@rtems.org> - * - * Permission to use, copy, modify, and/or distribute this software for any - * purpose with or without fee is hereby granted, provided that the above - * copyright notice and this permission notice appear in all copies. - * - * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES - * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF - * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR - * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES - * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN - * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF - * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE. - */ -/** - * @file - * - * @ingroup rtems_ld - * - * @brief RTEMS Linker. - * - */ - -#if HAVE_CONFIG_H -#include "config.h" -#endif - -#include <fstream> -#include <iostream> - -#include <errno.h> -#include <string.h> - -#include <rld.h> -#include <rld-compression.h> - -#include "fastlz.h" - -namespace rld -{ - namespace compress - { - compressor::compressor (files::image& image, - size_t size, - bool out, - bool compress) - : image (image), - size (size), - out (out), - compress (compress), - buffer (0), - io (0), - level (0), - total (0), - total_compressed (0) - { - if (size > 0xffff) - throw rld::error ("Size too big, 16 bits only", "compression"); - - buffer = new uint8_t[size]; - io = new uint8_t[size + (size / 10)]; - } - - compressor::~compressor () - { - flush (); - delete [] buffer; - delete [] io; - } - - void - compressor::write (const void* data_, size_t length) - { - if (!out) - throw rld::error ("Write on read-only", "compression"); - - const uint8_t* data = static_cast <const uint8_t*> (data_); - - while (length) - { - size_t appending; - - if (length > (size - level)) - appending = size - level; - else - appending = length; - - ::memcpy ((void*) (buffer + level), data, appending); - - data += appending; - level += appending; - length -= appending; - total += appending; - - output (); - } - } - - void - compressor::write (files::image& input, off_t offset, size_t length) - { - if (!out) - throw rld::error ("Write on read-only", "compression"); - - input.seek (offset); - - while (length) - { - size_t appending; - - if (length > (size - level)) - appending = size - level; - else - appending = length; - - input.read ((void*) (buffer + level), appending); - - level += appending; - length -= appending; - total += appending; - - output (); - } - } - - size_t - compressor::read (void* data_, size_t length) - { - if (out) - throw rld::error ("Read on write-only", "compression"); - - uint8_t* data = static_cast <uint8_t*> (data_); - - size_t amount = 0; - - while (length) - { - input (); - - if (level == 0) - break; - - size_t appending; - - if (length > level) - appending = level; - else - appending = length; - - ::memcpy (data, buffer, appending); - ::memmove (buffer, buffer + appending, level - appending); - - data += appending; - level -= appending; - length -= appending; - total += appending; - amount += appending; - } - - return amount; - } - - size_t - compressor::read (files::image& output_, off_t offset, size_t length) - { - if (out) - throw rld::error ("Read on write-only", "compression"); - - output_.seek (offset); - - return read (output_, length); - } - - size_t - compressor::read (files::image& output_, size_t length) - { - if (out) - throw rld::error ("Read on write-only", "compression"); - - size_t amount = 0; - - while (length) - { - input (); - - if (level == 0) - break; - - size_t appending; - - if (length > level) - appending = level; - else - appending = length; - - output_.write (buffer, appending); - - ::memmove (buffer, buffer + appending, level - appending); - - level -= appending; - length -= appending; - total += appending; - amount += appending; - } - - return amount; - } - - void - compressor::flush () - { - output (true); - } - - size_t - compressor::transferred () const - { - return total; - } - - size_t - compressor::compressed () const - { - return total_compressed; - } - - off_t - compressor::offset () const - { - return total; - } - - void - compressor::output (bool forced) - { - if (out && ((forced && level) || (level >= size))) - { - if (compress) - { - int writing = ::fastlz_compress (buffer, level, io); - uint8_t header[2]; - - if (rld::verbose () >= RLD_VERBOSE_FULL_DEBUG) - std::cout << "rtl: comp: offset=" << total_compressed - << " block-size=" << writing << std::endl; - - header[0] = writing >> 8; - header[1] = writing; - - image.write (header, 2); - image.write (io, writing); - - total_compressed += 2 + writing; - } - else - { - image.write (buffer, level); - } - - level = 0; - } - } - - void - compressor::input () - { - if (!out && (level == 0)) - { - if (compress) - { - uint8_t header[2]; - - if (image.read (header, 2) == 2) - { - uint32_t block_size = - (((uint32_t) header[0]) << 8) | (uint32_t) header[1]; - - if (block_size == 0) - throw rld::error ("Block size is invalid (0)", "compression"); - - total_compressed += 2 + block_size; - - if (rld::verbose () >= RLD_VERBOSE_FULL_DEBUG) - std::cout << "rtl: decomp: block-size=" << block_size - << std::endl; - - if (image.read (io, block_size) != block_size) - throw rld::error ("Read past end", "compression"); - - level = ::fastlz_decompress (io, block_size, buffer, size); - } - } - else - { - image.read (buffer, size); - level = size; - } - } - } - - } -} |