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.

28 files changed, 467 insertions, 333 deletions

diff --git a/configure.ac b/configure.ac
index d4a51ffd..82a7b1f9 100644
--- a/configure.ac
+++ b/configure.ac
@@ -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
 
diff --git a/m4/tuklib_integer.m4 b/m4/tuklib_integer.m4
new file mode 100644
index 00000000..5fe66eef
--- /dev/null
+++ b/m4/tuklib_integer.m4
@@ -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
diff --git a/src/common/bswap.h b/src/common/bswap.h
deleted file mode 100644
index c8cf125a..00000000
--- a/src/common/bswap.h
+++ /dev/null
@@ -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
diff --git a/src/common/integer.h b/src/common/integer.h
deleted file mode 100644
index 518c2a4e..00000000
--- a/src/common/integer.h
+++ /dev/null
@@ -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
diff --git a/src/common/tuklib_config.h b/src/common/tuklib_config.h
index 3fe21451..549cb24d 100644
--- a/src/common/tuklib_config.h
+++ b/src/common/tuklib_config.h
@@ -1 +1,7 @@
-#include "sysdefs.h"
+#ifdef HAVE_CONFIG_H
+#	include "sysdefs.h"
+#else
+#	include <stddef.h>
+#	include <inttypes.h>
+#	include <limits.h>
+#endif
diff --git a/src/common/tuklib_integer.h b/src/common/tuklib_integer.h
new file mode 100644
index 00000000..f13dd1d8
--- /dev/null
+++ b/src/common/tuklib_integer.h
@@ -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
diff --git a/src/liblzma/check/check.c b/src/liblzma/check/check.c
index ba8622e6..428ddaeb 100644
--- a/src/liblzma/check/check.c
+++ b/src/liblzma/check/check.c
@@ -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
 
diff --git a/src/liblzma/check/crc32_fast.c b/src/liblzma/check/crc32_fast.c
index a308eff5..49dc31f2 100644
--- a/src/liblzma/check/crc32_fast.c
+++ b/src/liblzma/check/crc32_fast.c
@@ -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;
diff --git a/src/liblzma/check/crc32_tablegen.c b/src/liblzma/check/crc32_tablegen.c
index 56bc5c7f..31a4d275 100644
--- a/src/liblzma/check/crc32_tablegen.c
+++ b/src/liblzma/check/crc32_tablegen.c
@@ -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;
diff --git a/src/liblzma/check/crc64_fast.c b/src/liblzma/check/crc64_fast.c
index 25557264..e42fc3dc 100644
--- a/src/liblzma/check/crc64_fast.c
+++ b/src/liblzma/check/crc64_fast.c
@@ -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;
diff --git a/src/liblzma/check/crc64_tablegen.c b/src/liblzma/check/crc64_tablegen.c
index 92b9a7da..fddaa7ed 100644
--- a/src/liblzma/check/crc64_tablegen.c
+++ b/src/liblzma/check/crc64_tablegen.c
@@ -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;
diff --git a/src/liblzma/check/crc_macros.h b/src/liblzma/check/crc_macros.h
index 9e2c0303..a7c21b76 100644
--- a/src/liblzma/check/crc_macros.h
+++ b/src/liblzma/check/crc_macros.h
@@ -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)
diff --git a/src/liblzma/check/sha256.c b/src/liblzma/check/sha256.c
index 6053a51b..04231dba 100644
--- a/src/liblzma/check/sha256.c
+++ b/src/liblzma/check/sha256.c
@@ -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;
 }
diff --git a/src/liblzma/common/alone_encoder.c b/src/liblzma/common/alone_encoder.c
index 68c9505d..d8c0170f 100644
--- a/src/liblzma/common/alone_encoder.c
+++ b/src/liblzma/common/alone_encoder.c
@@ -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);
diff --git a/src/liblzma/common/block_header_decoder.c b/src/liblzma/common/block_header_decoder.c
index 868f71b2..2c9573ee 100644
--- a/src/liblzma/common/block_header_decoder.c
+++ b/src/liblzma/common/block_header_decoder.c
@@ -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.
diff --git a/src/liblzma/common/block_header_encoder.c b/src/liblzma/common/block_header_encoder.c
index bc1a10f8..79dafb80 100644
--- a/src/liblzma/common/block_header_encoder.c
+++ b/src/liblzma/common/block_header_encoder.c
@@ -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;
 }
diff --git a/src/liblzma/common/common.h b/src/liblzma/common/common.h
index d794cb30..81f51421 100644
--- a/src/liblzma/common/common.h
+++ b/src/liblzma/common/common.h
@@ -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
diff --git a/src/liblzma/common/stream_flags_decoder.c b/src/liblzma/common/stream_flags_decoder.c
index 3dbbbcf4..1bc2f97c 100644
--- a/src/liblzma/common/stream_flags_decoder.c
+++ b/src/liblzma/common/stream_flags_decoder.c
@@ -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;
diff --git a/src/liblzma/common/stream_flags_encoder.c b/src/liblzma/common/stream_flags_encoder.c
index ecbd0f13..4e717159 100644
--- a/src/liblzma/common/stream_flags_encoder.c
+++ b/src/liblzma/common/stream_flags_encoder.c
@@ -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,
diff --git a/src/liblzma/lz/lz_encoder_hash.h b/src/liblzma/lz/lz_encoder_hash.h
index 884c27b9..c398d7d0 100644
--- a/src/liblzma/lz/lz_encoder_hash.h
+++ b/src/liblzma/lz/lz_encoder_hash.h
@@ -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
diff --git a/src/liblzma/lzma/lzma_decoder.c b/src/liblzma/lzma/lzma_decoder.c
index a013a62b..92c127f1 100644
--- a/src/liblzma/lzma/lzma_decoder.c
+++ b/src/liblzma/lzma/lzma_decoder.c
@@ -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;
diff --git a/src/liblzma/lzma/lzma_encoder.c b/src/liblzma/lzma/lzma_encoder.c
index e9836978..0fe992d5 100644
--- a/src/liblzma/lzma/lzma_encoder.c
+++ b/src/liblzma/lzma/lzma_encoder.c
@@ -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;
 }
diff --git a/src/liblzma/lzma/lzma_encoder_private.h b/src/liblzma/lzma/lzma_encoder_private.h
index 017f58bd..3895de2d 100644
--- a/src/liblzma/lzma/lzma_encoder_private.h
+++ b/src/liblzma/lzma/lzma_encoder_private.h
@@ -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
diff --git a/src/liblzma/simple/simple_decoder.c b/src/liblzma/simple/simple_decoder.c
index 9be1bfef..0beccd32 100644
--- a/src/liblzma/simple/simple_decoder.c
+++ b/src/liblzma/simple/simple_decoder.c
@@ -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)
diff --git a/src/liblzma/simple/simple_encoder.c b/src/liblzma/simple/simple_encoder.c
index 1ceabd1f..8aa463be 100644
--- a/src/liblzma/simple/simple_encoder.c
+++ b/src/liblzma/simple/simple_encoder.c
@@ -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;
 }
diff --git a/tests/test_block_header.c b/tests/test_block_header.c
index a95792eb..3d9b5d93 100644
--- a/tests/test_block_header.c
+++ b/tests/test_block_header.c
@@ -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);
diff --git a/tests/test_stream_flags.c b/tests/test_stream_flags.c
index 9c86c6b8..9611459e 100644
--- a/tests/test_stream_flags.c
+++ b/tests/test_stream_flags.c
@@ -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)
diff --git a/tests/tests.h b/tests/tests.h
index 60a7276c..8f3c745d 100644
--- a/tests/tests.h
+++ b/tests/tests.h
@@ -14,7 +14,7 @@
 #define LZMA_TESTS_H
 
 #include "sysdefs.h"
-#include "integer.h"
+#include "tuklib_integer.h"
 #include "lzma.h"
 
 #include <stdio.h>