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upx/src/compress_ucl.cpp
Markus F.X.J. Oberhumer a9e4526a6d Rearranged compression interface.
2006-06-09 09:28:32 +02:00

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/* compress_ucl.cpp --
This file is part of the UPX executable compressor.
Copyright (C) 1996-2004 Markus Franz Xaver Johannes Oberhumer
Copyright (C) 1996-2004 Laszlo Molnar
All Rights Reserved.
UPX and the UCL library are free software; you can redistribute them
and/or modify them 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; see the file COPYING.
If not, write to the Free Software Foundation, Inc.,
59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
Markus F.X.J. Oberhumer Laszlo Molnar
<mfx@users.sourceforge.net> <ml1050@users.sourceforge.net>
*/
#include "conf.h"
#include "compress.h"
#if !defined(WITH_UCL)
extern int compress_ucl_dummy;
int compress_ucl_dummy = 0;
#else
#if 1 && !defined(UCL_USE_ASM) && (ACC_ARCH_I386)
# if (ACC_CC_GNUC || ACC_CC_INTELC || ACC_CC_MSC || ACC_CC_WATCOMC)
# define UCL_USE_ASM
# endif
#endif
#if defined(UCL_NO_ASM)
# undef UCL_USE_ASM
#endif
#if defined(ACC_CFG_NO_UNALIGNED)
# undef UCL_USE_ASM
#endif
#if 1 && defined(UCL_USE_ASM)
# include <ucl/ucl_asm.h>
# define ucl_nrv2b_decompress_safe_8 ucl_nrv2b_decompress_asm_safe_8
# define ucl_nrv2b_decompress_safe_le16 ucl_nrv2b_decompress_asm_safe_le16
# define ucl_nrv2b_decompress_safe_le32 ucl_nrv2b_decompress_asm_safe_le32
# define ucl_nrv2d_decompress_safe_8 ucl_nrv2d_decompress_asm_safe_8
# define ucl_nrv2d_decompress_safe_le16 ucl_nrv2d_decompress_asm_safe_le16
# define ucl_nrv2d_decompress_safe_le32 ucl_nrv2d_decompress_asm_safe_le32
# define ucl_nrv2e_decompress_safe_8 ucl_nrv2e_decompress_asm_safe_8
# define ucl_nrv2e_decompress_safe_le16 ucl_nrv2e_decompress_asm_safe_le16
# define ucl_nrv2e_decompress_safe_le32 ucl_nrv2e_decompress_asm_safe_le32
#endif
/*************************************************************************
//
**************************************************************************/
static void wrap_ucl_nprogress(ucl_uint a, ucl_uint b, int state, ucl_voidp user)
{
if (state != -1 && state != 3) return;
upx_callback_p cb = (upx_callback_p) user;
if (cb && cb->nprogress)
cb->nprogress(cb, a, b, state);
}
int upx_ucl_compress ( const upx_bytep src, upx_uint src_len,
upx_bytep dst, upx_uintp dst_len,
upx_callback_p cb_parm,
int method, int level,
const struct upx_compress_config_t *conf_parm,
upx_uintp result )
{
int r = UPX_E_ERROR;
assert(level > 0); assert(result != NULL);
ucl_progress_callback_t cb;
cb.callback = 0;
cb.user = NULL;
if (cb_parm && cb_parm->nprogress) {
cb.callback = wrap_ucl_nprogress;
cb.user = cb_parm;
}
ucl_compress_config_t conf;
memset(&conf, 0xff, sizeof(conf));
if (conf_parm)
conf = conf_parm->conf_ucl; // struct copy
// prepare bit-buffer settings
conf.bb_endian = 0;
conf.bb_size = 0;
if (method >= M_NRV2B_LE32 && method <= M_CL1B_LE16)
{
static const unsigned char sizes[3]={32,8,16};
conf.bb_size = sizes[(method - M_NRV2B_LE32) % 3];
}
else
throwInternalError("unknown compression method");
// optimize compression parms
if (level <= 3 && conf.max_offset == UPX_UINT_MAX)
conf.max_offset = 8*1024-1;
else if (level == 4 && conf.max_offset == UPX_UINT_MAX)
conf.max_offset = 32*1024-1;
if M_IS_NRV2B(method)
r = ucl_nrv2b_99_compress(src, src_len, dst, dst_len,
&cb, level, &conf, result);
else if M_IS_NRV2D(method)
r = ucl_nrv2d_99_compress(src, src_len, dst, dst_len,
&cb, level, &conf, result);
else if M_IS_NRV2E(method)
r = ucl_nrv2e_99_compress(src, src_len, dst, dst_len,
&cb, level, &conf, result);
else
throwInternalError("unknown compression method");
return r;
}
/*************************************************************************
//
**************************************************************************/
int upx_ucl_decompress ( const upx_bytep src, upx_uint src_len,
upx_bytep dst, upx_uintp dst_len,
int method )
{
int r = UPX_E_ERROR;
switch (method)
{
case M_NRV2B_8:
r = ucl_nrv2b_decompress_safe_8(src,src_len,dst,dst_len,NULL);
break;
case M_NRV2B_LE16:
r = ucl_nrv2b_decompress_safe_le16(src,src_len,dst,dst_len,NULL);
break;
case M_NRV2B_LE32:
r = ucl_nrv2b_decompress_safe_le32(src,src_len,dst,dst_len,NULL);
break;
case M_NRV2D_8:
r = ucl_nrv2d_decompress_safe_8(src,src_len,dst,dst_len,NULL);
break;
case M_NRV2D_LE16:
r = ucl_nrv2d_decompress_safe_le16(src,src_len,dst,dst_len,NULL);
break;
case M_NRV2D_LE32:
r = ucl_nrv2d_decompress_safe_le32(src,src_len,dst,dst_len,NULL);
break;
case M_NRV2E_8:
r = ucl_nrv2e_decompress_safe_8(src,src_len,dst,dst_len,NULL);
break;
case M_NRV2E_LE16:
r = ucl_nrv2e_decompress_safe_le16(src,src_len,dst,dst_len,NULL);
break;
case M_NRV2E_LE32:
r = ucl_nrv2e_decompress_safe_le32(src,src_len,dst,dst_len,NULL);
break;
default:
throwInternalError("unknown decompression method");
break;
}
return r;
}
/*************************************************************************
//
**************************************************************************/
int upx_ucl_test_overlap ( const upx_bytep buf, upx_uint src_off,
upx_uint src_len, upx_uintp dst_len,
int method )
{
int r = UPX_E_ERROR;
switch (method)
{
case M_NRV2B_8:
r = ucl_nrv2b_test_overlap_8(buf,src_off,src_len,dst_len,NULL);
break;
case M_NRV2B_LE16:
r = ucl_nrv2b_test_overlap_le16(buf,src_off,src_len,dst_len,NULL);
break;
case M_NRV2B_LE32:
r = ucl_nrv2b_test_overlap_le32(buf,src_off,src_len,dst_len,NULL);
break;
case M_NRV2D_8:
r = ucl_nrv2d_test_overlap_8(buf,src_off,src_len,dst_len,NULL);
break;
case M_NRV2D_LE16:
r = ucl_nrv2d_test_overlap_le16(buf,src_off,src_len,dst_len,NULL);
break;
case M_NRV2D_LE32:
r = ucl_nrv2d_test_overlap_le32(buf,src_off,src_len,dst_len,NULL);
break;
case M_NRV2E_8:
r = ucl_nrv2e_test_overlap_8(buf,src_off,src_len,dst_len,NULL);
break;
case M_NRV2E_LE16:
r = ucl_nrv2e_test_overlap_le16(buf,src_off,src_len,dst_len,NULL);
break;
case M_NRV2E_LE32:
r = ucl_nrv2e_test_overlap_le32(buf,src_off,src_len,dst_len,NULL);
break;
default:
throwInternalError("unknown decompression method");
break;
}
return r;
}
#endif /* WITH_UCL */
/*
vi:ts=4:et:nowrap
*/
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