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

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@ -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
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@ -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

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@ -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

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@ -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

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@ -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
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@ -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

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@ -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

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@ -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;

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@ -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;

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@ -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;

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@ -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;

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@ -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)

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@ -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;
}

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@ -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);

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@ -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.

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@ -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;
}

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@ -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

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@ -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;

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@ -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,

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@ -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

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@ -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;

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@ -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;
}

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@ -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

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@ -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)

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@ -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;
}

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@ -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);

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@ -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)

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