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Use a tuklib module for integer handling. 

This replaces bswap.h and integer.h.

The tuklib module uses <byteswap.h> on GNU,
<sys/endian.h> on *BSDs and <sys/byteorder.h>
on Solaris, which may contain optimized code
like inline assembly.
This commit is contained in:
Lasse Collin 2009-10-04 22:57:12 +03:00
parent 29fd321033
commit ebfb2c5e1f
28 changed files with 467 additions and 333 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

54
configure.ac
View File

@ -315,35 +315,6 @@ AM_CONDITIONAL(COND_ASM_X86, test "x$enable_assembler" = xx86)
AM_CONDITIONAL(COND_ASM_X86_64, test "x$enable_assembler" = xx86_64)
################################
# Fast unaligned memory access #
################################
AC_MSG_CHECKING([if unaligned memory access should be used])
AC_ARG_ENABLE([unaligned-access], AC_HELP_STRING([--enable-unaligned-access],
[Enable if the system supports *fast* unaligned memory access
with 16-bit and 32-bit integers. By default, this is enabled
only on x86, x86_64, and big endian PowerPC.]),
[], [enable_unaligned_access=auto])
if test "x$enable_unaligned_access" = xauto ; then
case $host_cpu in
i?86|x86_64|powerpc|powerpc64)
enable_unaligned_access=yes
;;
*)
enable_unaligned_access=no
;;
esac
fi
if test "x$enable_unaligned_access" = xyes ; then
AC_DEFINE([HAVE_FAST_UNALIGNED_ACCESS], [1], [Define to 1 if
the system supports fast unaligned memory access.])
AC_MSG_RESULT([yes])
else
AC_MSG_RESULT([no])
fi
#####################
# Size optimization #
#####################
@ -508,30 +479,6 @@ AC_CHECK_HEADERS([fcntl.h limits.h sys/time.h],
[],
[AC_MSG_ERROR([Required header file(s) are missing.])])
# If any of these headers are missing, things should still work correctly:
AC_CHECK_HEADERS([byteswap.h])
# Even if we have byteswap.h, we may lack the specific macros/functions.
if test x$ac_cv_header_byteswap_h = xyes ; then
m4_foreach([FUNC], [bswap_16,bswap_32,bswap_64], [
AC_MSG_CHECKING([if FUNC is available])
AC_LINK_IFELSE([AC_LANG_SOURCE([
#include <byteswap.h>
int
main(void)
{
FUNC[](42);
return 0;
}
])], [
AC_DEFINE(HAVE_[]m4_toupper(FUNC), [1],
[Define to 1 if] FUNC [is available.])
AC_MSG_RESULT([yes])
], [AC_MSG_RESULT([no])])
])dnl
fi
###############################################################################
# Checks for typedefs, structures, and compiler characteristics.
@ -578,6 +525,7 @@ gl_GETOPT
AC_CHECK_FUNCS([futimens futimes futimesat utimes utime], [break])
TUKLIB_PROGNAME
TUKLIB_INTEGER
TUKLIB_PHYSMEM
TUKLIB_CPUCORES

74
m4/tuklib_integer.m4 Normal file
View File

@ -0,0 +1,74 @@
#
# SYNOPSIS
#
# TUKLIB_INTEGER
#
# DESCRIPTION
#
# Checks for tuklib_integer.h:
# - Endianness
# - Does operating system provide byte swapping macros
# - Does the hardware support fast unaligned access to 16-bit
# and 32-bit integers
#
# COPYING
#
# Author: Lasse Collin
#
# This file has been put into the public domain.
# You can do whatever you want with this file.
#
AC_DEFUN_ONCE([TUKLIB_INTEGER], [
AC_REQUIRE([TUKLIB_COMMON])
AC_REQUIRE([AC_C_BIGENDIAN])
AC_CHECK_HEADERS([byteswap.h sys/endian.h sys/byteorder.h], [break])
# Even if we have byteswap.h, we may lack the specific macros/functions.
if test x$ac_cv_header_byteswap_h = xyes ; then
m4_foreach([FUNC], [bswap_16,bswap_32,bswap_64], [
AC_MSG_CHECKING([if FUNC is available])
AC_LINK_IFELSE([AC_LANG_SOURCE([
#include <byteswap.h>
int
main(void)
{
FUNC[](42);
return 0;
}
])], [
AC_DEFINE(HAVE_[]m4_toupper(FUNC), [1],
[Define to 1 if] FUNC [is available.])
AC_MSG_RESULT([yes])
], [AC_MSG_RESULT([no])])
])dnl
fi
AC_MSG_CHECKING([if unaligned memory access should be used])
AC_ARG_ENABLE([unaligned-access], AC_HELP_STRING([--enable-unaligned-access],
[Enable if the system supports *fast* unaligned memory access
with 16-bit and 32-bit integers. By default, this is enabled
only on x86, x86_64, and big endian PowerPC.]),
[], [enable_unaligned_access=auto])
if test "x$enable_unaligned_access" = xauto ; then
# TODO: There may be other architectures, on which unaligned access
# is OK.
case $host_cpu in
i?86|x86_64|powerpc|powerpc64)
enable_unaligned_access=yes
;;
*)
enable_unaligned_access=no
;;
esac
fi
if test "x$enable_unaligned_access" = xyes ; then
AC_DEFINE([TUKLIB_FAST_UNALIGNED_ACCESS], [1], [Define to 1 if
the system supports fast unaligned access to 16-bit and
32-bit integers.])
AC_MSG_RESULT([yes])
else
AC_MSG_RESULT([no])
fi
])dnl

52
src/common/bswap.h
View File

@ -1,52 +0,0 @@
///////////////////////////////////////////////////////////////////////////////
//
/// \file bswap.h
/// \brief Byte swapping
//
// Author: Lasse Collin
//
// This file has been put into the public domain.
// You can do whatever you want with this file.
//
///////////////////////////////////////////////////////////////////////////////
#ifndef LZMA_BSWAP_H
#define LZMA_BSWAP_H
// NOTE: We assume that config.h is already #included.
// At least glibc has byteswap.h which contains inline assembly code for
// byteswapping. Some systems have byteswap.h but lack one or more of the
// bswap_xx macros/functions, which is why we check them separately even
// if byteswap.h is available.
#ifdef HAVE_BYTESWAP_H
# include <byteswap.h>
#endif
#ifndef HAVE_BSWAP_16
# define bswap_16(num) \
(((num) << 8) | ((num) >> 8))
#endif
#ifndef HAVE_BSWAP_32
# define bswap_32(num) \
( (((num) << 24) ) \
| (((num) << 8) & UINT32_C(0x00FF0000)) \
| (((num) >> 8) & UINT32_C(0x0000FF00)) \
| (((num) >> 24) ) )
#endif
#ifndef HAVE_BSWAP_64
# define bswap_64(num) \
( (((num) << 56) ) \
| (((num) << 40) & UINT64_C(0x00FF000000000000)) \
| (((num) << 24) & UINT64_C(0x0000FF0000000000)) \
| (((num) << 8) & UINT64_C(0x000000FF00000000)) \
| (((num) >> 8) & UINT64_C(0x00000000FF000000)) \
| (((num) >> 24) & UINT64_C(0x0000000000FF0000)) \
| (((num) >> 40) & UINT64_C(0x000000000000FF00)) \
| (((num) >> 56) ) )
#endif
#endif

170
src/common/integer.h
View File

@ -1,170 +0,0 @@
///////////////////////////////////////////////////////////////////////////////
//
/// \file integer.h
/// \brief Reading and writing integers from and to buffers
//
// Author: Lasse Collin
//
// This file has been put into the public domain.
// You can do whatever you want with this file.
//
///////////////////////////////////////////////////////////////////////////////
#ifndef LZMA_INTEGER_H
#define LZMA_INTEGER_H
// On big endian, we need byte swapping. These macros may be used outside
// this file, so don't put these inside HAVE_FAST_UNALIGNED_ACCESS.
#ifdef WORDS_BIGENDIAN
# include "bswap.h"
# define integer_le_16(n) bswap_16(n)
# define integer_le_32(n) bswap_32(n)
# define integer_le_64(n) bswap_64(n)
#else
# define integer_le_16(n) (n)
# define integer_le_32(n) (n)
# define integer_le_64(n) (n)
#endif
// I'm aware of AC_CHECK_ALIGNED_ACCESS_REQUIRED from Autoconf archive, but
// it's not useful here. We don't care if unaligned access is supported,
// we care if it is fast. Some systems can emulate unaligned access in
// software, which is horribly slow; we want to use byte-by-byte access on
// such systems but the Autoconf test would detect such a system as
// supporting unaligned access.
//
// NOTE: HAVE_FAST_UNALIGNED_ACCESS indicates only support for 16-bit and
// 32-bit integer loads and stores. 64-bit integers may or may not work.
// That's why 64-bit functions are commented out.
//
// TODO: Big endian PowerPC supports byte swapping load and store instructions
// that also allow unaligned access. Inline assembler could be OK for that.
//
// Performance of these functions isn't that important until LZMA3, but it
// doesn't hurt to have these ready already.
#ifdef HAVE_FAST_UNALIGNED_ACCESS
static inline uint16_t
integer_read_16(const uint8_t buf[static 2])
{
uint16_t ret = *(const uint16_t *)(buf);
return integer_le_16(ret);
}
static inline uint32_t
integer_read_32(const uint8_t buf[static 4])
{
uint32_t ret = *(const uint32_t *)(buf);
return integer_le_32(ret);
}
/*
static inline uint64_t
integer_read_64(const uint8_t buf[static 8])
{
uint64_t ret = *(const uint64_t *)(buf);
return integer_le_64(ret);
}
*/
static inline void
integer_write_16(uint8_t buf[static 2], uint16_t num)
{
*(uint16_t *)(buf) = integer_le_16(num);
}
static inline void
integer_write_32(uint8_t buf[static 4], uint32_t num)
{
*(uint32_t *)(buf) = integer_le_32(num);
}
/*
static inline void
integer_write_64(uint8_t buf[static 8], uint64_t num)
{
*(uint64_t *)(buf) = integer_le_64(num);
}
*/
#else
static inline uint16_t
integer_read_16(const uint8_t buf[static 2])
{
uint16_t ret = buf[0] | (buf[1] << 8);
return ret;
}
static inline uint32_t
integer_read_32(const uint8_t buf[static 4])
{
uint32_t ret = buf[0];
ret |= (uint32_t)(buf[1]) << 8;
ret |= (uint32_t)(buf[2]) << 16;
ret |= (uint32_t)(buf[3]) << 24;
return ret;
}
/*
static inline uint64_t
integer_read_64(const uint8_t buf[static 8])
{
uint64_t ret = buf[0];
ret |= (uint64_t)(buf[1]) << 8;
ret |= (uint64_t)(buf[2]) << 16;
ret |= (uint64_t)(buf[3]) << 24;
ret |= (uint64_t)(buf[4]) << 32;
ret |= (uint64_t)(buf[5]) << 40;
ret |= (uint64_t)(buf[6]) << 48;
ret |= (uint64_t)(buf[7]) << 56;
return ret;
}
*/
static inline void
integer_write_16(uint8_t buf[static 2], uint16_t num)
{
buf[0] = (uint8_t)(num);
buf[1] = (uint8_t)(num >> 8);
}
static inline void
integer_write_32(uint8_t buf[static 4], uint32_t num)
{
buf[0] = (uint8_t)(num);
buf[1] = (uint8_t)(num >> 8);
buf[2] = (uint8_t)(num >> 16);
buf[3] = (uint8_t)(num >> 24);
}
/*
static inline void
integer_write_64(uint8_t buf[static 8], uint64_t num)
{
buf[0] = (uint8_t)(num);
buf[1] = (uint8_t)(num >> 8);
buf[2] = (uint8_t)(num >> 16);
buf[3] = (uint8_t)(num >> 24);
buf[4] = (uint8_t)(num >> 32);
buf[5] = (uint8_t)(num >> 40);
buf[6] = (uint8_t)(num >> 48);
buf[7] = (uint8_t)(num >> 56);
}
*/
#endif
#endif

8
src/common/tuklib_config.h
View File

@ -1 +1,7 @@
#include "sysdefs.h"
#ifdef HAVE_CONFIG_H
# include "sysdefs.h"
#else
# include <stddef.h>
# include <inttypes.h>
# include <limits.h>
#endif

350
src/common/tuklib_integer.h Normal file
View File

@ -0,0 +1,350 @@
///////////////////////////////////////////////////////////////////////////////
//
/// \file tuklib_integer.h
/// \brief Byte swapping and endianness related macros and functions
///
/// This file provides macros or functions to do basic endianness related
/// integer operations (XX = 16, 32, or 64; Y = b or l):
/// - Byte swapping: bswapXX(num)
/// - Byte order conversions to/from native: convXXYe(num)
/// - Aligned reads: readXXYe(ptr)
/// - Aligned writes: writeXXYe(ptr, num)
/// - Unaligned reads (16/32-bit only): unaligned_readXXYe(ptr)
/// - Unaligned writes (16/32-bit only): unaligned_writeXXYe(ptr, num)
///
/// Since they can macros, the arguments should have no side effects since
/// they may be evaluated more than once.
///
/// \todo PowerPC and possibly some other architectures support
/// byte swapping load and store instructions. This file
/// doesn't take advantage of those instructions.
//
// Author: Lasse Collin
//
// This file has been put into the public domain.
// You can do whatever you want with this file.
//
///////////////////////////////////////////////////////////////////////////////
#ifndef TUKLIB_INTEGER_H
#define TUKLIB_INTEGER_H
#include "tuklib_common.h"
////////////////////////////////////////
// Operating system specific features //
////////////////////////////////////////
#if defined(HAVE_BYTESWAP_H)
// glibc, uClibc, dietlibc
# include <byteswap.h>
# ifdef HAVE_BSWAP_16
# define bswap16(num) bswap_16(num)
# endif
# ifdef HAVE_BSWAP_32
# define bswap32(num) bswap_32(num)
# endif
# ifdef HAVE_BSWAP_64
# define bswap64(num) bswap_64(num)
# endif
#elif defined(HAVE_SYS_ENDIAN_H)
// *BSDs and Darwin
# include <sys/endian.h>
#elif defined(HAVE_SYS_BYTEORDER_H)
// Solaris
# include <sys/byteorder.h>
# ifdef BSWAP_16
# define bswap16(num) BSWAP_16(num)
# endif
# ifdef BSWAP_32
# define bswap32(num) BSWAP_32(num)
# endif
# ifdef BSWAP_64
# define bswap64(num) BSWAP_64(num)
# endif
# ifdef BE_16
# define conv16be(num) BE_16(num)
# endif
# ifdef BE_32
# define conv32be(num) BE_32(num)
# endif
# ifdef BE_64
# define conv64be(num) BE_64(num)
# endif
# ifdef LE_16
# define conv16le(num) LE_16(num)
# endif
# ifdef LE_32
# define conv32le(num) LE_32(num)
# endif
# ifdef LE_64
# define conv64le(num) LE_64(num)
# endif
#endif
///////////////////
// Byte swapping //
///////////////////
#ifndef bswap16
# define bswap16(num) \
(((uint16_t)(num) << 8) | ((uint16_t)(num) >> 8))
#endif
#ifndef bswap32
# define bswap32(num) \
( (((uint32_t)(num) << 24) ) \
| (((uint32_t)(num) << 8) & UINT32_C(0x00FF0000)) \
| (((uint32_t)(num) >> 8) & UINT32_C(0x0000FF00)) \
| (((uint32_t)(num) >> 24) ) )
#endif
#ifndef bswap64
# define bswap64(num) \
( (((uint64_t)(num) << 56) ) \
| (((uint64_t)(num) << 40) & UINT64_C(0x00FF000000000000)) \
| (((uint64_t)(num) << 24) & UINT64_C(0x0000FF0000000000)) \
| (((uint64_t)(num) << 8) & UINT64_C(0x000000FF00000000)) \
| (((uint64_t)(num) >> 8) & UINT64_C(0x00000000FF000000)) \
| (((uint64_t)(num) >> 24) & UINT64_C(0x0000000000FF0000)) \
| (((uint64_t)(num) >> 40) & UINT64_C(0x000000000000FF00)) \
| (((uint64_t)(num) >> 56) ) )
#endif
// Define conversion macros using the basic byte swapping macros.
#ifdef WORDS_BIGENDIAN
# ifndef conv16be
# define conv16be(num) ((uint16_t)(num))
# endif
# ifndef conv32be
# define conv32be(num) ((uint32_t)(num))
# endif
# ifndef conv64be
# define conv64be(num) ((uint64_t)(num))
# endif
# ifndef conv16le
# define conv16le(num) bswap16(num)
# endif
# ifndef conv32le
# define conv32le(num) bswap32(num)
# endif
# ifndef conv64le
# define conv64le(num) bswap64(num)
# endif
#else
# ifndef conv16be
# define conv16be(num) bswap16(num)
# endif
# ifndef conv32be
# define conv32be(num) bswap32(num)
# endif
# ifndef conv64be
# define conv64be(num) bswap64(num)
# endif
# ifndef conv16le
# define conv16le(num) ((uint16_t)(num))
# endif
# ifndef conv32le
# define conv32le(num) ((uint32_t)(num))
# endif
# ifndef conv64le
# define conv64le(num) ((uint64_t)(num))
# endif
#endif
//////////////////////////////
// Aligned reads and writes //
//////////////////////////////
static inline uint16_t
read16be(const uint8_t *buf)
{
uint16_t num = *(const uint16_t *)buf;
return conv16be(num);
}
static inline uint16_t
read16le(const uint8_t *buf)
{
uint16_t num = *(const uint16_t *)buf;
return conv16le(num);
}
static inline uint32_t
read32be(const uint8_t *buf)
{
uint32_t num = *(const uint32_t *)buf;
return conv32be(num);
}
static inline uint32_t
read32le(const uint8_t *buf)
{
uint32_t num = *(const uint32_t *)buf;
return conv32le(num);
}
static inline uint64_t
read64be(const uint8_t *buf)
{
uint64_t num = *(const uint64_t *)buf;
return conv64be(num);
}
static inline uint64_t
read64le(const uint8_t *buf)
{
uint64_t num = *(const uint64_t *)buf;
return conv64le(num);
}
// NOTE: Possible byte swapping must be done in a macro to allow GCC
// to optimize byte swapping of constants when using glibc's or *BSD's
// byte swapping macros. The actual write is done in an inline function
// to make type checking of the buf pointer possible similarly to readXXYe()
// functions. This also seems to silence a probably bogus GCC warning about
// strict aliasing when buf points to the beginning of an uint8_t array.
#define write16be(buf, num) write16ne((buf), conv16be(num))
#define write16le(buf, num) write16ne((buf), conv16le(num))
#define write32be(buf, num) write32ne((buf), conv32be(num))
#define write32le(buf, num) write32ne((buf), conv32le(num))
#define write64be(buf, num) write64ne((buf), conv64be(num))
#define write64le(buf, num) write64ne((buf), conv64le(num))
static inline void
write16ne(uint8_t *buf, uint16_t num)
{
*(uint16_t *)buf = num;
return;
}
static inline void
write32ne(uint8_t *buf, uint32_t num)
{
*(uint32_t *)buf = num;
return;
}
static inline void
write64ne(uint8_t *buf, uint64_t num)
{
*(uint64_t *)buf = num;
return;
}
////////////////////////////////
// Unaligned reads and writes //
////////////////////////////////
// NOTE: TUKLIB_FAST_UNALIGNED_ACCESS indicates only support for 16-bit and
// 32-bit unaligned integer loads and stores. It's possible that 64-bit
// unaligned access doesn't work or is slower than byte-by-byte access.
// Since unaligned 64-bit is probably not needed as often as 16-bit or
// 32-bit, we simply don't support 64-bit unaligned access for now.
#ifdef TUKLIB_FAST_UNALIGNED_ACCESS
# define unaligned_read16be read16be
# define unaligned_read16le read16le
# define unaligned_read32be read32be
# define unaligned_read32le read32le
# define unaligned_write16be write16be
# define unaligned_write16le write16le
# define unaligned_write32be write32be
# define unaligned_write32le write32le
#else
static inline uint16_t
unaligned_read16be(const uint8_t *buf)
{
uint16_t num = ((uint16_t)buf[0] << 8) | buf[1];
return num;
}
static inline uint16_t
unaligned_read16le(const uint8_t *buf)
{
uint16_t num = ((uint32_t)buf[0]) | ((uint16_t)buf[1] << 8);
return num;
}
static inline uint32_t
unaligned_read32be(const uint8_t *buf)
{
uint32_t num = (uint32_t)buf[0] << 24;
num |= (uint32_t)buf[1] << 16;
num |= (uint32_t)buf[2] << 8;
num |= (uint32_t)buf[3];
return num;
}
static inline uint32_t
unaligned_read32le(const uint8_t *buf)
{
uint32_t num = (uint32_t)buf[0];
num |= (uint32_t)buf[1] << 8;
num |= (uint32_t)buf[2] << 16;
num |= (uint32_t)buf[3] << 24;
return num;
}
static inline void
unaligned_write16be(uint8_t *buf, uint16_t num)
{
buf[0] = num >> 8;
buf[1] = num;
return;
}
static inline void
unaligned_write16le(uint8_t *buf, uint16_t num)
{
buf[0] = num;
buf[1] = num >> 8;
return;
}
static inline void
unaligned_write32be(uint8_t *buf, uint32_t num)
{
buf[0] = num >> 24;
buf[1] = num >> 16;
buf[2] = num >> 8;
buf[3] = num;
return;
}
static inline void
unaligned_write32le(uint8_t *buf, uint32_t num)
{
buf[0] = num;
buf[1] = num >> 8;
buf[2] = num >> 16;
buf[3] = num >> 24;
return;
}
#endif
#endif

4
src/liblzma/check/check.c
View File

@ -150,13 +150,13 @@ lzma_check_finish(lzma_check_state *check, lzma_check type)
switch (type) {
#ifdef HAVE_CHECK_CRC32
case LZMA_CHECK_CRC32:
check->buffer.u32[0] = integer_le_32(check->state.crc32);
check->buffer.u32[0] = conv32le(check->state.crc32);
break;
#endif
#ifdef HAVE_CHECK_CRC64
case LZMA_CHECK_CRC64:
check->buffer.u64[0] = integer_le_64(check->state.crc64);
check->buffer.u64[0] = conv64le(check->state.crc64);
break;
#endif

4
src/liblzma/check/crc32_fast.c
View File

@ -29,7 +29,7 @@ lzma_crc32(const uint8_t *buf, size_t size, uint32_t crc)
crc = ~crc;
#ifdef WORDS_BIGENDIAN
crc = bswap_32(crc);
crc = bswap32(crc);
#endif
if (size > 8) {
@ -75,7 +75,7 @@ lzma_crc32(const uint8_t *buf, size_t size, uint32_t crc)
crc = lzma_crc32_table[0][*buf++ ^ A(crc)] ^ S8(crc);
#ifdef WORDS_BIGENDIAN
crc = bswap_32(crc);
crc = bswap32(crc);
#endif
return ~crc;

8
src/liblzma/check/crc32_tablegen.c
View File

@ -14,12 +14,8 @@
//
///////////////////////////////////////////////////////////////////////////////
#include <inttypes.h>
#include <stdio.h>
#ifdef WORDS_BIGENDIAN
# include "../../common/bswap.h"
#endif
#include "../../common/tuklib_integer.h"
static uint32_t crc32_table[8][256];
@ -48,7 +44,7 @@ init_crc32_table(void)
#ifdef WORDS_BIGENDIAN
for (size_t s = 0; s < 8; ++s)
for (size_t b = 0; b < 256; ++b)
crc32_table[s][b] = bswap_32(crc32_table[s][b]);
crc32_table[s][b] = bswap32(crc32_table[s][b]);
#endif
return;

4
src/liblzma/check/crc64_fast.c
View File

@ -32,7 +32,7 @@ lzma_crc64(const uint8_t *buf, size_t size, uint64_t crc)
crc = ~crc;
#ifdef WORDS_BIGENDIAN
crc = bswap_64(crc);
crc = bswap64(crc);
#endif
if (size > 4) {
@ -64,7 +64,7 @@ lzma_crc64(const uint8_t *buf, size_t size, uint64_t crc)
crc = lzma_crc64_table[0][*buf++ ^ A1(crc)] ^ S8(crc);
#ifdef WORDS_BIGENDIAN
crc = bswap_64(crc);
crc = bswap64(crc);
#endif
return ~crc;

8
src/liblzma/check/crc64_tablegen.c
View File

@ -13,12 +13,8 @@
//
///////////////////////////////////////////////////////////////////////////////
#include <inttypes.h>
#include <stdio.h>
#ifdef WORDS_BIGENDIAN
# include "../../common/bswap.h"
#endif
#include "../../common/tuklib_integer.h"
static uint64_t crc64_table[4][256];
@ -47,7 +43,7 @@ init_crc64_table(void)
#ifdef WORDS_BIGENDIAN
for (size_t s = 0; s < 4; ++s)
for (size_t b = 0; b < 256; ++b)
crc64_table[s][b] = bswap_64(crc64_table[s][b]);
crc64_table[s][b] = bswap64(crc64_table[s][b]);
#endif
return;

2
src/liblzma/check/crc_macros.h
View File

@ -11,8 +11,6 @@
///////////////////////////////////////////////////////////////////////////////
#ifdef WORDS_BIGENDIAN
# include "../../common/bswap.h"
# define A(x) ((x) >> 24)
# define B(x) (((x) >> 16) & 0xFF)
# define C(x) (((x) >> 8) & 0xFF)

18
src/liblzma/check/sha256.c
View File

@ -29,10 +29,6 @@
#include "check.h"
#ifndef WORDS_BIGENDIAN
# include "../../common/bswap.h"
#endif
// At least on x86, GCC is able to optimize this to a rotate instruction.
#define rotr_32(num, amount) ((num) >> (amount) | (num) << (32 - (amount)))
@ -123,7 +119,7 @@ process(lzma_check_state *check)
uint32_t data[16];
for (size_t i = 0; i < 16; ++i)
data[i] = bswap_32(check->buffer.u32[i]);
data[i] = bswap32(check->buffer.u32[i]);
transform(check->state.sha256.state, data);
#endif
@ -194,20 +190,12 @@ lzma_sha256_finish(lzma_check_state *check)
// Convert the message size from bytes to bits.
check->state.sha256.size *= 8;
#ifdef WORDS_BIGENDIAN
check->buffer.u64[(64 - 8) / 8] = check->state.sha256.size;
#else
check->buffer.u64[(64 - 8) / 8] = bswap_64(check->state.sha256.size);
#endif
check->buffer.u64[(64 - 8) / 8] = conv64be(check->state.sha256.size);
process(check);
for (size_t i = 0; i < 8; ++i)
#ifdef WORDS_BIGENDIAN
check->buffer.u32[i] = check->state.sha256.state[i];
#else
check->buffer.u32[i] = bswap_32(check->state.sha256.state[i]);
#endif
check->buffer.u32[i] = conv32be(check->state.sha256.state[i]);
return;
}

2
src/liblzma/common/alone_encoder.c
View File

@ -116,7 +116,7 @@ alone_encoder_init(lzma_next_coder *next, lzma_allocator *allocator,
if (d != UINT32_MAX)
++d;
integer_write_32(next->coder->header + 1, d);
unaligned_write32le(next->coder->header + 1, d);
// - Uncompressed size (always unknown and using EOPM)
memset(next->coder->header + 1 + 4, 0xFF, 8);

2
src/liblzma/common/block_header_decoder.c
View File

@ -59,7 +59,7 @@ lzma_block_header_decode(lzma_block *block,
const size_t in_size = block->header_size - 4;
// Verify CRC32
if (lzma_crc32(in, in_size, 0) != integer_read_32(in + in_size))
if (lzma_crc32(in, in_size, 0) != unaligned_read32le(in + in_size))
return LZMA_DATA_ERROR;
// Check for unsupported flags.

2
src/liblzma/common/block_header_encoder.c
View File

@ -126,7 +126,7 @@ lzma_block_header_encode(const lzma_block *block, uint8_t *out)
memzero(out + out_pos, out_size - out_pos);
// CRC32
integer_write_32(out + out_size, lzma_crc32(out, out_size, 0));
unaligned_write32le(out + out_size, lzma_crc32(out, out_size, 0));
return LZMA_OK;
}

2
src/liblzma/common/common.h
View File

@ -15,7 +15,7 @@
#include "sysdefs.h"
#include "mythread.h"
#include "integer.h"
#include "tuklib_integer.h"
#if defined(_WIN32) || defined(__CYGWIN__)
# ifdef DLL_EXPORT

6
src/liblzma/common/stream_flags_decoder.c
View File

@ -38,7 +38,7 @@ lzma_stream_header_decode(lzma_stream_flags *options, const uint8_t *in)
// and unsupported files.
const uint32_t crc = lzma_crc32(in + sizeof(lzma_header_magic),
LZMA_STREAM_FLAGS_SIZE, 0);
if (crc != integer_read_32(in + sizeof(lzma_header_magic)
if (crc != unaligned_read32le(in + sizeof(lzma_header_magic)
+ LZMA_STREAM_FLAGS_SIZE))
return LZMA_DATA_ERROR;
@ -67,7 +67,7 @@ lzma_stream_footer_decode(lzma_stream_flags *options, const uint8_t *in)
// CRC32
const uint32_t crc = lzma_crc32(in + sizeof(uint32_t),
sizeof(uint32_t) + LZMA_STREAM_FLAGS_SIZE, 0);
if (crc != integer_read_32(in))
if (crc != unaligned_read32le(in))
return LZMA_DATA_ERROR;
// Stream Flags
@ -75,7 +75,7 @@ lzma_stream_footer_decode(lzma_stream_flags *options, const uint8_t *in)
return LZMA_OPTIONS_ERROR;
// Backward Size
options->backward_size = integer_read_32(in + sizeof(uint32_t));
options->backward_size = unaligned_read32le(in + sizeof(uint32_t));
options->backward_size = (options->backward_size + 1) * 4;
return LZMA_OK;

6
src/liblzma/common/stream_flags_encoder.c
View File

@ -46,7 +46,7 @@ lzma_stream_header_encode(const lzma_stream_flags *options, uint8_t *out)
const uint32_t crc = lzma_crc32(out + sizeof(lzma_header_magic),
LZMA_STREAM_FLAGS_SIZE, 0);
integer_write_32(out + sizeof(lzma_header_magic)
unaligned_write32le(out + sizeof(lzma_header_magic)
+ LZMA_STREAM_FLAGS_SIZE, crc);
return LZMA_OK;
@ -66,7 +66,7 @@ lzma_stream_footer_encode(const lzma_stream_flags *options, uint8_t *out)
if (!is_backward_size_valid(options))
return LZMA_PROG_ERROR;
integer_write_32(out + 4, options->backward_size / 4 - 1);
unaligned_write32le(out + 4, options->backward_size / 4 - 1);
// Stream Flags
if (stream_flags_encode(options, out + 2 * 4))
@ -76,7 +76,7 @@ lzma_stream_footer_encode(const lzma_stream_flags *options, uint8_t *out)
const uint32_t crc = lzma_crc32(
out + 4, 4 + LZMA_STREAM_FLAGS_SIZE, 0);
integer_write_32(out, crc);
unaligned_write32le(out, crc);
// Magic
memcpy(out + 2 * 4 + LZMA_STREAM_FLAGS_SIZE,

2
src/liblzma/lz/lz_encoder_hash.h
View File

@ -37,7 +37,7 @@
#define FIX_5_HASH_SIZE (HASH_2_SIZE + HASH_3_SIZE + HASH_4_SIZE)
// Endianness doesn't matter in hash_2_calc() (no effect on the output).
#ifdef HAVE_FAST_UNALIGNED_ACCESS
#ifdef TUKLIB_FAST_UNALIGNED_ACCESS
# define hash_2_calc() \
const uint32_t hash_value = *(const uint16_t *)(cur);
#else

2
src/liblzma/lzma/lzma_decoder.c
View File

@ -1042,7 +1042,7 @@ lzma_lzma_props_decode(void **options, lzma_allocator *allocator,
// All dictionary sizes are accepted, including zero. LZ decoder
// will automatically use a dictionary at least a few KiB even if
// a smaller dictionary is requested.
opt->dict_size = integer_read_32(props + 1);
opt->dict_size = unaligned_read32le(props + 1);
opt->preset_dict = NULL;
opt->preset_dict_size = 0;

2
src/liblzma/lzma/lzma_encoder.c
View File

@ -661,7 +661,7 @@ lzma_lzma_props_encode(const void *options, uint8_t *out)
if (lzma_lzma_lclppb_encode(opt, out))
return LZMA_PROG_ERROR;
integer_write_32(out + 1, opt->dict_size);
unaligned_write32le(out + 1, opt->dict_size);
return LZMA_OK;
}

2
src/liblzma/lzma/lzma_encoder_private.h
View File

@ -24,7 +24,7 @@
// needed in lzma_lzma_optimum_*() to test if the match is at least
// MATCH_LEN_MIN bytes. Unaligned access gives tiny gain so there's no
// reason to not use it when it is supported.
#ifdef HAVE_FAST_UNALIGNED_ACCESS
#ifdef TUKLIB_FAST_UNALIGNED_ACCESS
# define not_equal_16(a, b) \
(*(const uint16_t *)(a) != *(const uint16_t *)(b))
#else

2
src/liblzma/simple/simple_decoder.c
View File

@ -28,7 +28,7 @@ lzma_simple_props_decode(void **options, lzma_allocator *allocator,
if (opt == NULL)
return LZMA_MEM_ERROR;
opt->start_offset = integer_read_32(props);
opt->start_offset = unaligned_read32le(props);
// Don't leave an options structure allocated if start_offset is zero.
if (opt->start_offset == 0)

2
src/liblzma/simple/simple_encoder.c
View File

@ -32,7 +32,7 @@ lzma_simple_props_encode(const void *options, uint8_t *out)
if (opt == NULL || opt->start_offset == 0)
return LZMA_OK;
integer_write_32(out, opt->start_offset);
unaligned_write32le(out, opt->start_offset);
return LZMA_OK;
}

4
tests/test_block_header.c
View File

@ -211,7 +211,7 @@ test3(void)
// Unsupported filter
// NOTE: This may need updating when new IDs become supported.
buf[2] ^= 0x1F;
integer_write_32(buf + known_options.header_size - 4,
unaligned_write32le(buf + known_options.header_size - 4,
lzma_crc32(buf, known_options.header_size - 4, 0));
expect(lzma_block_header_decode(&decoded_options, NULL, buf)
== LZMA_OPTIONS_ERROR);
@ -219,7 +219,7 @@ test3(void)
// Non-nul Padding
buf[known_options.header_size - 4 - 1] ^= 1;
integer_write_32(buf + known_options.header_size - 4,
unaligned_write32le(buf + known_options.header_size - 4,
lzma_crc32(buf, known_options.header_size - 4, 0));
expect(lzma_block_header_decode(&decoded_options, NULL, buf)
== LZMA_OPTIONS_ERROR);

6
tests/test_stream_flags.c
View File

@ -133,13 +133,13 @@ test_decode_invalid(void)
// Test 2a (valid CRC32)
uint32_t crc = lzma_crc32(buffer + 6, 2, 0);
integer_write_32(buffer + 8, crc);
unaligned_write32le(buffer + 8, crc);
succeed(test_header_decoder(LZMA_OK));
// Test 2b (invalid Stream Flags with valid CRC32)
buffer[6] ^= 0x20;
crc = lzma_crc32(buffer + 6, 2, 0);
integer_write_32(buffer + 8, crc);
unaligned_write32le(buffer + 8, crc);
succeed(test_header_decoder(LZMA_OPTIONS_ERROR));
// Test 3 (invalid CRC32)
@ -151,7 +151,7 @@ test_decode_invalid(void)
expect(lzma_stream_footer_encode(&known_flags, buffer) == LZMA_OK);
buffer[9] ^= 0x40;
crc = lzma_crc32(buffer + 4, 6, 0);
integer_write_32(buffer, crc);
unaligned_write32le(buffer, crc);
succeed(test_footer_decoder(LZMA_OPTIONS_ERROR));
// Test 5 (invalid Magic Bytes)

2
tests/tests.h
View File

@ -14,7 +14,7 @@
#define LZMA_TESTS_H
#include "sysdefs.h"
#include "integer.h"
#include "tuklib_integer.h"
#include "lzma.h"
#include <stdio.h>