pread_write.c: make all archs use common code

c6x does not need own version at all

Signed-off-by: Peter S. Mazinger <ps.m@gmx.net>
Signed-off-by: Bernhard Reutner-Fischer <rep.dot.nop@gmail.com>

7 files changed, 88 insertions, 394 deletions

diff --git a/libc/sysdeps/linux/c6x/Makefile.arch b/libc/sysdeps/linux/c6x/Makefile.arch
index 6bb44f203..5f8aaec20 100644
--- a/libc/sysdeps/linux/c6x/Makefile.arch
+++ b/libc/sysdeps/linux/c6x/Makefile.arch
@@ -5,6 +5,7 @@
 # Licensed under the LGPL v2.1, see the file COPYING.LIB in this tarball.
 #
 
-CSRC := brk.c pread_write.c syscall.c prctl.c
+CSRC := brk.c syscall.c prctl.c
+#CSRC :=
 
 SSRC := __longjmp.S bsd-_setjmp.S bsd-setjmp.S clone.S setjmp.S _vfork.S
diff --git a/libc/sysdeps/linux/c6x/pread_write.c b/libc/sysdeps/linux/c6x/pread_write.c
deleted file mode 100644
index f985b4374..000000000
--- a/libc/sysdeps/linux/c6x/pread_write.c
+++ /dev/null
@@ -1,103 +0,0 @@
-/* vi: set sw=4 ts=4:
- *
- * Copyright (C) 2002 by Erik Andersen <andersen@uclibc.org>
- * Based in part on the files
- *		./sysdeps/unix/sysv/linux/pwrite.c,
- *		./sysdeps/unix/sysv/linux/pread.c,
- *		sysdeps/posix/pread.c
- *		sysdeps/posix/pwrite.c
- * from GNU libc 2.2.5, but reworked considerably...
- *
- * This program is free software; you can redistribute it and/or modify it
- * under the terms of the GNU Library General Public License as published by
- * the Free Software Foundation; either version 2 of the License, or (at your
- * option) any later version.
- *
- * This program is distributed in the hope that it will be useful, but WITHOUT
- * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
- * FITNESS FOR A PARTICULAR PURPOSE. See the GNU Library General Public License
- * for more details.
- *
- * You should have received a copy of the GNU Library General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
- */
-
-#define _LARGEFILE64_SOURCE
-#include <features.h>
-#undef __OPTIMIZE__
-/* We absolutely do _NOT_ want interfaces silently
- *  *  * renamed under us or very bad things will happen... */
-#ifdef __USE_FILE_OFFSET64
-# undef __USE_FILE_OFFSET64
-#endif
-
-
-#include <errno.h>
-#include <sys/types.h>
-#include <sys/syscall.h>
-#include <unistd.h>
-#include <stdint.h>
-
-extern __typeof(pread) __libc_pread;
-extern __typeof(pwrite) __libc_pwrite;
-#ifdef __UCLIBC_HAS_LFS__
-extern __typeof(pread64) __libc_pread64;
-extern __typeof(pwrite64) __libc_pwrite64;
-#endif
-
-#ifdef __NR_pread64             /* Newer kernels renamed but it's the same.  */
-# ifdef __NR_pread
-#  error "__NR_pread and __NR_pread64 both defined???"
-# endif
-# define __NR_pread __NR_pread64
-#endif
-
-#define __NR___syscall_pread __NR_pread
-static inline _syscall5(ssize_t, __syscall_pread, int, fd, void *, buf,
-		size_t, count, off_t, offset_hi, off_t, offset_lo);
-
-ssize_t __libc_pread(int fd, void *buf, size_t count, off_t offset)
-{
-	return(__syscall_pread(fd,buf,count,offset,offset >> 31));
-}
-weak_alias (__libc_pread, pread)
-
-#if defined __UCLIBC_HAS_LFS__
-ssize_t __libc_pread64(int fd, void *buf, size_t count, off64_t offset)
-{
-    uint32_t low = offset & 0xffffffff;
-    uint32_t high = offset >> 32;
-	return(__syscall_pread(fd, buf, count, low, high));
-}
-weak_alias (__libc_pread64, pread64)
-#endif /* __UCLIBC_HAS_LFS__  */
-
-
-#ifdef __NR_pwrite64            /* Newer kernels renamed but it's the same.  */
-# ifdef __NR_pwrite
-#  error "__NR_pwrite and __NR_pwrite64 both defined???"
-# endif
-# define __NR_pwrite __NR_pwrite64
-#endif
-
-#define __NR___syscall_pwrite __NR_pwrite
-static inline _syscall5(ssize_t, __syscall_pwrite, int, fd, const void *, buf,
-		size_t, count, off_t, offset_hi, off_t, offset_lo);
-
-ssize_t __libc_pwrite(int fd, const void *buf, size_t count, off_t offset)
-{
-	return(__syscall_pwrite(fd,buf,count,offset,offset >> 31));
-}
-weak_alias (__libc_pwrite, pwrite)
-
-#if defined __UCLIBC_HAS_LFS__
-ssize_t __libc_pwrite64(int fd, const void *buf, size_t count, off64_t offset)
-{
-    uint32_t low = offset & 0xffffffff;
-    uint32_t high = offset >> 32;
-	return(__syscall_pwrite(fd, buf, count, low, high));
-}
-weak_alias (__libc_pwrite64, pwrite64)
-#endif /* __UCLIBC_HAS_LFS__  */
-
diff --git a/libc/sysdeps/linux/common/pread_write.c b/libc/sysdeps/linux/common/pread_write.c
index 3d04bb7e5..dd5d36c86 100644
--- a/libc/sysdeps/linux/common/pread_write.c
+++ b/libc/sysdeps/linux/common/pread_write.c
@@ -35,6 +35,7 @@ static _syscall5(ssize_t, __syscall_pread, int, fd, void *, buf,
 		 size_t, count, off_t, offset_hi, off_t, offset_lo)
 #  define MY_PREAD(fd, buf, count, offset) __syscall_pread(fd, buf, count, OFF_HI_LO(offset))
 #  define MY_PREAD64(fd, buf, count, offset) __syscall_pread(fd, buf, count, OFF64_HI_LO(offset))
+# endif
 #endif
 
 #ifndef MY_PWRITE
@@ -44,6 +45,7 @@ static _syscall5(ssize_t, __syscall_pwrite, int, fd, const void *, buf,
 		 size_t, count, off_t, offset_hi, off_t, offset_lo)
 #  define MY_PWRITE(fd, buf, count, offset) __syscall_pwrite(fd, buf, count, OFF_HI_LO(offset))
 #  define MY_PWRITE64(fd, buf, count, offset) __syscall_pwrite(fd, buf, count, OFF64_HI_LO(offset))
+# endif
 #endif
 
 static ssize_t __NC(pread)(int fd, void *buf, size_t count, off_t offset)
diff --git a/libc/sysdeps/linux/mips/pread_write.c b/libc/sysdeps/linux/mips/pread_write.c
index ea6b15f6a..b777dc47e 100644
--- a/libc/sysdeps/linux/mips/pread_write.c
+++ b/libc/sysdeps/linux/mips/pread_write.c
@@ -4,76 +4,39 @@
  *
  * Licensed under the LGPL v2.1, see the file COPYING.LIB in this tarball.
  */
-/*
- * Based in part on the files
- *		./sysdeps/unix/sysv/linux/pwrite.c,
- *		./sysdeps/unix/sysv/linux/pread.c,
- *		sysdeps/posix/pread.c
- *		sysdeps/posix/pwrite.c
- * from GNU libc 2.2.5, but reworked considerably...
- */
 
 #include <sys/syscall.h>
 #include <unistd.h>
-#include <stdint.h>
 #include <endian.h>
 #include <sgidefs.h>
 
-#ifdef __NR_pread64             /* Newer kernels renamed but it's the same.  */
+#ifdef __NR_pread64
 # ifdef __NR_pread
 #  error "__NR_pread and __NR_pread64 both defined???"
 # endif
 # define __NR_pread __NR_pread64
 #endif
 
-extern __typeof(pread) __libc_pread;
-extern __typeof(pwrite) __libc_pwrite;
-#ifdef __UCLIBC_HAS_LFS__
-extern __typeof(pread64) __libc_pread64;
-extern __typeof(pwrite64) __libc_pwrite64;
-#endif
-
-#include <bits/kernel_types.h>
-
-
 #ifdef __NR_pread
-
-# if _MIPS_SIM == _MIPS_SIM_ABI64
-#  define __NR___libc_pread __NR_pread
-_syscall4(ssize_t, __libc_pread, int, fd, void *, buf, size_t, count, off_t, offset)
-weak_alias (__libc_pread, pread)
-#  ifdef __UCLIBC_HAS_LFS__
-#   define __NR___libc_pread64 __NR_pread
-_syscall4(ssize_t, __libc_pread64, int, fd, void *, buf, size_t, count, off64_t, offset)
-weak_alias (__libc_pread64, pread64)
-#  endif /* __UCLIBC_HAS_LFS__ */
+# if _MIPS_SIM == _MIPS_SIM_ABI64 /* glibc uses it for N32 as well */
+#  define __NR___syscall_pread __NR_pread
+static _syscall4(ssize_t, __syscall_pread, int, fd, void *, buf, size_t, count, off_t, offset)
+#  define MY_PREAD(fd, buf, count, offset) \
+	__syscall_pread(fd, buf, count, offset)
+#  define MY_PREAD64(fd, buf, count, offset) \
+	__syscall_pread(fd, buf, count, offset)
 # else /* O32 || N32 */
 #  define __NR___syscall_pread __NR_pread
-static __inline__ _syscall6(ssize_t, __syscall_pread, int, fd, void *, buf,
-		size_t, count, int, dummy, off_t, offset_hi, off_t, offset_lo)
-
-ssize_t __libc_pread(int fd, void *buf, size_t count, off_t offset)
-{
-	return(__syscall_pread(fd,buf,count,0,__LONG_LONG_PAIR(offset>>31,offset)));
-}
-weak_alias(__libc_pread,pread)
-
-#  ifdef __UCLIBC_HAS_LFS__
-ssize_t __libc_pread64(int fd, void *buf, size_t count, off64_t offset)
-{
-	uint32_t low = offset & 0xffffffff;
-	uint32_t high = offset >> 32;
-	return(__syscall_pread(fd, buf, count, 0, __LONG_LONG_PAIR (high, low)));
-}
-weak_alias(__libc_pread64,pread64)
-#  endif /* __UCLIBC_HAS_LFS__  */
-# endif /* O32 || N32 */
-
-#endif /* __NR_pread */
-
-/**********************************************************************/
+static _syscall6(ssize_t, __syscall_pread, int, fd, void *, buf,
+		 size_t, count, int, dummy, off_t, offset_hi, off_t, offset_lo)
+#  define MY_PREAD(fd, buf, count, offset) \
+	__syscall_pread(fd, buf, count, 0, OFF_HI_LO(offset))
+#  define MY_PREAD64(fd, buf, count, offset) \
+	__syscall_pread(fd, buf, count, 0, OFF64_HI_LO(offset))
+# endif
+#endif
 
-#ifdef __NR_pwrite64            /* Newer kernels renamed but it's the same.  */
+#ifdef __NR_pwrite64
 # ifdef __NR_pwrite
 #  error "__NR_pwrite and __NR_pwrite64 both defined???"
 # endif
@@ -81,35 +44,22 @@ weak_alias(__libc_pread64,pread64)
 #endif
 
 #ifdef __NR_pwrite
-
-# if _MIPS_SIM == _MIPS_SIM_ABI64
-#  define __NR___libc_pwrite __NR_pwrite
-_syscall4(ssize_t, __libc_pwrite, int, fd, const void *, buf, size_t, count, off_t, offset)
-weak_alias (__libc_pwrite, pwrite)
-#  ifdef __UCLIBC_HAS_LFS__
-#   define __NR___libc_pwrite64 __NR_pwrite
-_syscall4(ssize_t, __libc_pwrite64, int, fd, const void *, buf, size_t, count, off64_t, offset)
-weak_alias (__libc_pwrite64, pwrite64)
-#  endif /* __UCLIBC_HAS_LFS__  */
+# if _MIPS_SIM == _MIPS_SIM_ABI64 /* glibc uses it for N32 as well */
+#  define __NR___syscall_pwrite __NR_pwrite
+static _syscall4(ssize_t, __syscall_pwrite, int, fd, const void *, buf, size_t, count, off_t, offset)
+#  define MY_PWRITE(fd, buf, count, offset) \
+	__syscall_pwrite(fd, buf, count, offset)
+#  define MY_PWRITE64(fd, buf, count, offset) \
+	__syscall_pwrite(fd, buf, count, offset)
 # else /* O32 || N32 */
 #  define __NR___syscall_pwrite __NR_pwrite
-static __inline__ _syscall6(ssize_t, __syscall_pwrite, int, fd, const void *, buf,
-		size_t, count, int, dummy, off_t, offset_hi, off_t, offset_lo)
-
-ssize_t __libc_pwrite(int fd, const void *buf, size_t count, off_t offset)
-{
-	return(__syscall_pwrite(fd,buf,count,0,__LONG_LONG_PAIR(offset>>31,offset)));
-}
-weak_alias(__libc_pwrite,pwrite)
+static _syscall6(ssize_t, __syscall_pwrite, int, fd, const void *, buf,
+		 size_t, count, int, dummy, off_t, offset_hi, off_t, offset_lo)
+#  define MY_PWRITE(fd, buf, count, offset) \
+	__syscall_pwrite(fd, buf, count, 0, OFF_HI_LO(offset))
+#  define MY_PWRITE64(fd, buf, count, offset) \
+	__syscall_pwrite(fd, buf, count, 0, OFF64_HI_LO(offset))
+# endif
+#endif
 
-#  ifdef __UCLIBC_HAS_LFS__
-ssize_t __libc_pwrite64(int fd, const void *buf, size_t count, off64_t offset)
-{
-	uint32_t low = offset & 0xffffffff;
-	uint32_t high = offset >> 32;
-	return(__syscall_pwrite(fd, buf, count, 0, __LONG_LONG_PAIR (high, low)));
-}
-weak_alias(__libc_pwrite64,pwrite64)
-#  endif /* __UCLIBC_HAS_LFS__  */
-# endif /* O32 || N32 */
-#endif /* __NR_pwrite */
+#include "../common/pread_write.c"
diff --git a/libc/sysdeps/linux/powerpc/pread_write.c b/libc/sysdeps/linux/powerpc/pread_write.c
index 92a184c3d..5cb338622 100644
--- a/libc/sysdeps/linux/powerpc/pread_write.c
+++ b/libc/sysdeps/linux/powerpc/pread_write.c
@@ -1,26 +1,15 @@
-/* vi: set sw=4 ts=4:
- *
+/* vi: set sw=4 ts=4: */
+/*
  * Copyright (C) 2000-2006 Erik Andersen <andersen@uclibc.org>
  *
  * Licensed under the LGPL v2.1, see the file COPYING.LIB in this tarball.
  */
-/* Based in part on the files
- *		./sysdeps/unix/sysv/linux/pwrite.c,
- *		./sysdeps/unix/sysv/linux/pread.c,
- *		sysdeps/posix/pread.c
- *		sysdeps/posix/pwrite.c
- * from GNU libc 2.2.5, but reworked considerably...
- */
 
 #include <sys/syscall.h>
 #include <unistd.h>
 #include <endian.h>
 
-#ifndef __UCLIBC_HAS_LFS__
-# define off64_t off_t
-#endif
-
-#ifdef __NR_pread64             /* Newer kernels renamed but it's the same.  */
+#ifdef __NR_pread64
 # ifdef __NR_pread
 #  error "__NR_pread and __NR_pread64 both defined???"
 # endif
@@ -28,28 +17,16 @@
 #endif
 
 #ifdef __NR_pread
-extern __typeof(pread) __libc_pread;
 # define __NR___syscall_pread __NR_pread
-static __inline__ _syscall6(ssize_t, __syscall_pread, int, fd,
-		void *, buf, size_t, count, int, dummy, off_t, offset_hi, off_t, offset_lo)
-
-ssize_t __libc_pread(int fd, void *buf, size_t count, off_t offset)
-{
-	return(__syscall_pread(fd, buf, count, 0, __LONG_LONG_PAIR(offset >> 31, offset)));
-}
-weak_alias(__libc_pread,pread)
-
-# ifdef __UCLIBC_HAS_LFS__
-extern __typeof(pread64) __libc_pread64;
-ssize_t __libc_pread64(int fd, void *buf, size_t count, off64_t offset)
-{
-	return(__syscall_pread(fd, buf, count, 0, __LONG_LONG_PAIR(offset >> 32, offset)));
-}
-weak_alias(__libc_pread64,pread64)
-# endif /* __UCLIBC_HAS_LFS__  */
-#endif /* __NR_pread */
+static _syscall6(ssize_t, __syscall_pread, int, fd, void *, buf,
+		 size_t, count, int, dummy, off_t, offset_hi, off_t, offset_lo)
+# define MY_PREAD(fd, buf, count, offset) \
+	__syscall_pread(fd, buf, count, 0, OFF_HI_LO(offset))
+# define MY_PREAD64(fd, buf, count, offset) \
+	__syscall_pread(fd, buf, count, 0, OFF64_HI_LO(offset))
+#endif
 
-#ifdef __NR_pwrite64            /* Newer kernels renamed but it's the same.  */
+#ifdef __NR_pwrite64
 # ifdef __NR_pwrite
 #  error "__NR_pwrite and __NR_pwrite64 both defined???"
 # endif
@@ -57,23 +34,14 @@ weak_alias(__libc_pread64,pread64)
 #endif
 
 #ifdef __NR_pwrite
-extern __typeof(pwrite) __libc_pwrite;
 # define __NR___syscall_pwrite __NR_pwrite
-static __inline__ _syscall6(ssize_t, __syscall_pwrite, int, fd,
-		const void *, buf, size_t, count, int, dummy, off_t, offset_hi, off_t, offset_lo)
 
-ssize_t __libc_pwrite(int fd, const void *buf, size_t count, off_t offset)
-{
-	return(__syscall_pwrite(fd, buf, count, 0, __LONG_LONG_PAIR(offset >> 31, offset)));
-}
-weak_alias(__libc_pwrite,pwrite)
+static _syscall6(ssize_t, __syscall_pwrite, int, fd, const void *, buf,
+		 size_t, count, int, dummy, off_t, offset_hi, off_t, offset_lo)
+# define MY_PWRITE(fd, buf, count, offset) \
+	__syscall_pwrite(fd, buf, count, 0, OFF_HI_LO(offset))
+# define MY_PWRITE64(fd, buf, count, offset) \
+	__syscall_pwrite(fd, buf, count, 0, OFF64_HI_LO(offset))
+#endif
 
-# ifdef __UCLIBC_HAS_LFS__
-extern __typeof(pwrite64) __libc_pwrite64;
-ssize_t __libc_pwrite64(int fd, const void *buf, size_t count, off64_t offset)
-{
-	return(__syscall_pwrite(fd, buf, count, 0, __LONG_LONG_PAIR(offset >> 32, offset)));
-}
-weak_alias(__libc_pwrite64,pwrite64)
-# endif /* __UCLIBC_HAS_LFS__  */
-#endif /* __NR_pwrite */
+#include "../common/pread_write.c"
diff --git a/libc/sysdeps/linux/sh/pread_write.c b/libc/sysdeps/linux/sh/pread_write.c
index 86feb9cce..f4453a604 100644
--- a/libc/sysdeps/linux/sh/pread_write.c
+++ b/libc/sysdeps/linux/sh/pread_write.c
@@ -4,28 +4,12 @@
  *
  * Licensed under the LGPL v2.1, see the file COPYING.LIB in this tarball.
  */
-/*
- * Based in part on the files
- *		./sysdeps/unix/sysv/linux/pwrite.c,
- *		./sysdeps/unix/sysv/linux/pread.c,
- *		sysdeps/posix/pread.c
- *		sysdeps/posix/pwrite.c
- * from GNU libc 2.2.5, but reworked considerably...
- */
 
 #include <sys/syscall.h>
 #include <unistd.h>
-#include <stdint.h>
 #include <endian.h>
 
-#ifdef __UCLIBC_HAS_THREADS_NATIVE__
-#include <sysdep-cancel.h>
-#else
-#define SINGLE_THREAD_P 1
-#endif
-
-
-#ifdef __NR_pread64             /* Newer kernels renamed but it's the same.  */
+#ifdef __NR_pread64
 # ifdef __NR_pread
 #  error "__NR_pread and __NR_pread64 both defined???"
 # endif
@@ -33,49 +17,16 @@
 #endif
 
 #ifdef __NR_pread
-extern __typeof(pread) __libc_pread;
 # define __NR___syscall_pread __NR_pread
-static __inline__ _syscall6(ssize_t, __syscall_pread, int, fd, void *, buf,
-		size_t, count, int, dummy, off_t, offset_hi, off_t, offset_lo)
-
-ssize_t __libc_pread(int fd, void *buf, size_t count, off_t offset)
-{
-	if (SINGLE_THREAD_P)
-		return(__syscall_pread(fd,buf,count,0,__LONG_LONG_PAIR(offset >> 31,offset)));
-
-#ifdef __UCLIBC_HAS_THREADS_NATIVE__
-	int oldtype = LIBC_CANCEL_ASYNC ();
-	ssize_t result = __syscall_pread(fd,buf,count,0,__LONG_LONG_PAIR(offset >> 31,offset));
-	LIBC_CANCEL_RESET (oldtype);
-	return result;
-#endif
-}
-weak_alias(__libc_pread,pread)
-
-# ifdef __UCLIBC_HAS_LFS__
-extern __typeof(pread64) __libc_pread64;
-ssize_t __libc_pread64(int fd, void *buf, size_t count, off64_t offset)
-{
-	uint32_t low = offset & 0xffffffff;
-	uint32_t high = offset >> 32;
-
-	if (SINGLE_THREAD_P)
-		return __syscall_pread(fd, buf, count, 0, __LONG_LONG_PAIR (high, low));
-
-#ifdef __UCLIBC_HAS_THREADS_NATIVE__
-	int oldtype = LIBC_CANCEL_ASYNC ();
-	ssize_t result = __syscall_pread(fd, buf, count, 0, __LONG_LONG_PAIR (high, low));
-	LIBC_CANCEL_RESET (oldtype);
-	return result;
+static _syscall6(ssize_t, __syscall_pread, int, fd, void *, buf,
+		 size_t, count, int, dummy, off_t, offset_hi, off_t, offset_lo)
+# define MY_PREAD(fd, buf, count, offset) \
+	__syscall_pread(fd, buf, count, 0, OFF_HI_LO(offset))
+# define MY_PREAD64(fd, buf, count, offset) \
+	__syscall_pread(fd, buf, count, 0, OFF64_HI_LO(offset))
 #endif
-}
-weak_alias(__libc_pread64,pread64)
-# endif /* __UCLIBC_HAS_LFS__  */
-#endif /* __NR_pread */
-
-/**********************************************************************/
 
-#ifdef __NR_pwrite64            /* Newer kernels renamed but it's the same.  */
+#ifdef __NR_pwrite64
 # ifdef __NR_pwrite
 #  error "__NR_pwrite and __NR_pwrite64 both defined???"
 # endif
@@ -83,43 +34,13 @@ weak_alias(__libc_pread64,pread64)
 #endif
 
 #ifdef __NR_pwrite
-extern __typeof(pwrite) __libc_pwrite;
 # define __NR___syscall_pwrite __NR_pwrite
-static __inline__ _syscall6(ssize_t, __syscall_pwrite, int, fd, const void *, buf,
-		size_t, count, int, dummy, off_t, offset_hi, off_t, offset_lo)
-
-ssize_t __libc_pwrite(int fd, const void *buf, size_t count, off_t offset)
-{
-	if (SINGLE_THREAD_P)
-		return __syscall_pwrite(fd,buf,count,0,__LONG_LONG_PAIR(offset >> 31,offset));
-
-#ifdef __UCLIBC_HAS_THREADS_NATIVE__
-	int oldtype = LIBC_CANCEL_ASYNC ();
-	ssize_t result = __syscall_pwrite(fd,buf,count,0,__LONG_LONG_PAIR(offset >> 31,offset));
-	LIBC_CANCEL_RESET (oldtype);
-	return result;
+static _syscall6(ssize_t, __syscall_pwrite, int, fd, const void *, buf,
+		 size_t, count, int, dummy, off_t, offset_hi, off_t, offset_lo)
+# define MY_PWRITE(fd, buf, count, offset) \
+	__syscall_pwrite(fd, buf, count, 0, OFF_HI_LO(offset))
+# define MY_PWRITE64(fd, buf, count, offset) \
+	__syscall_pwrite(fd, buf, count, 0, OFF64_HI_LO(offset))
 #endif
 
-}
-weak_alias(__libc_pwrite,pwrite)
-
-# ifdef __UCLIBC_HAS_LFS__
-extern __typeof(pwrite64) __libc_pwrite64;
-ssize_t __libc_pwrite64(int fd, const void *buf, size_t count, off64_t offset)
-{
-	uint32_t low = offset & 0xffffffff;
-	uint32_t high = offset >> 32;
-
-	if (SINGLE_THREAD_P)
-		return __syscall_pwrite(fd, buf, count, 0, __LONG_LONG_PAIR (high, low));
-
-#ifdef __UCLIBC_HAS_THREADS_NATIVE__
-	int oldtype = LIBC_CANCEL_ASYNC ();
-	ssize_t result = __syscall_pwrite(fd, buf, count, 0, __LONG_LONG_PAIR (high, low));
-	LIBC_CANCEL_RESET (oldtype);
-	return result;
-#endif
-}
-weak_alias(__libc_pwrite64,pwrite64)
-# endif /* __UCLIBC_HAS_LFS__  */
-#endif /* __NR_pwrite */
+#include "../common/pread_write.c"
diff --git a/libc/sysdeps/linux/xtensa/pread_write.c b/libc/sysdeps/linux/xtensa/pread_write.c
index e8b39e9cf..f4453a604 100644
--- a/libc/sysdeps/linux/xtensa/pread_write.c
+++ b/libc/sysdeps/linux/xtensa/pread_write.c
@@ -4,30 +4,12 @@
  *
  * Licensed under the LGPL v2.1, see the file COPYING.LIB in this tarball.
  */
-/*
- * Based in part on the files
- *		./sysdeps/unix/sysv/linux/pwrite.c,
- *		./sysdeps/unix/sysv/linux/pread.c,
- *		sysdeps/posix/pread.c
- *		sysdeps/posix/pwrite.c
- * from GNU libc 2.2.5, but reworked considerably...
- */
 
 #include <sys/syscall.h>
 #include <unistd.h>
-#include <stdint.h>
 #include <endian.h>
 
-extern __typeof(pread) __libc_pread;
-extern __typeof(pwrite) __libc_pwrite;
-#ifdef __UCLIBC_HAS_LFS__
-extern __typeof(pread64) __libc_pread64;
-extern __typeof(pwrite64) __libc_pwrite64;
-#endif
-
-#include <bits/kernel_types.h>
-
-#ifdef __NR_pread64             /* Newer kernels renamed but it's the same.  */
+#ifdef __NR_pread64
 # ifdef __NR_pread
 #  error "__NR_pread and __NR_pread64 both defined???"
 # endif
@@ -35,31 +17,16 @@ extern __typeof(pwrite64) __libc_pwrite64;
 #endif
 
 #ifdef __NR_pread
-
 # define __NR___syscall_pread __NR_pread
-/* On Xtensa, 64-bit values are aligned in even/odd register pairs.  */
-static __inline__ _syscall6(ssize_t, __syscall_pread, int, fd, void *, buf,
-		size_t, count, int, pad, off_t, offset_hi, off_t, offset_lo)
-
-ssize_t __libc_pread(int fd, void *buf, size_t count, off_t offset)
-{
-	return __syscall_pread(fd, buf, count, 0, __LONG_LONG_PAIR(offset >> 31, offset));
-}
-weak_alias(__libc_pread,pread)
-
-# ifdef __UCLIBC_HAS_LFS__
-ssize_t __libc_pread64(int fd, void *buf, size_t count, off64_t offset)
-{
-	uint32_t low = offset & 0xffffffff;
-	uint32_t high = offset >> 32;
-	return __syscall_pread(fd, buf, count, 0, __LONG_LONG_PAIR(high, low));
-}
-weak_alias(__libc_pread64,pread64)
-# endif /* __UCLIBC_HAS_LFS__  */
-
-#endif /* __NR_pread */
+static _syscall6(ssize_t, __syscall_pread, int, fd, void *, buf,
+		 size_t, count, int, dummy, off_t, offset_hi, off_t, offset_lo)
+# define MY_PREAD(fd, buf, count, offset) \
+	__syscall_pread(fd, buf, count, 0, OFF_HI_LO(offset))
+# define MY_PREAD64(fd, buf, count, offset) \
+	__syscall_pread(fd, buf, count, 0, OFF64_HI_LO(offset))
+#endif
 
-#ifdef __NR_pwrite64            /* Newer kernels renamed but it's the same.  */
+#ifdef __NR_pwrite64
 # ifdef __NR_pwrite
 #  error "__NR_pwrite and __NR_pwrite64 both defined???"
 # endif
@@ -67,25 +34,13 @@ weak_alias(__libc_pread64,pread64)
 #endif
 
 #ifdef __NR_pwrite
-
 # define __NR___syscall_pwrite __NR_pwrite
-/* On Xtensa, 64-bit values are aligned in even/odd register pairs.  */
-static __inline__ _syscall6(ssize_t, __syscall_pwrite, int, fd, const void *, buf,
-		size_t, count, int, pad, off_t, offset_hi, off_t, offset_lo)
-
-ssize_t __libc_pwrite(int fd, const void *buf, size_t count, off_t offset)
-{
-	return __syscall_pwrite(fd, buf, count, 0, __LONG_LONG_PAIR(offset >> 31, offset));
-}
-weak_alias(__libc_pwrite,pwrite)
+static _syscall6(ssize_t, __syscall_pwrite, int, fd, const void *, buf,
+		 size_t, count, int, dummy, off_t, offset_hi, off_t, offset_lo)
+# define MY_PWRITE(fd, buf, count, offset) \
+	__syscall_pwrite(fd, buf, count, 0, OFF_HI_LO(offset))
+# define MY_PWRITE64(fd, buf, count, offset) \
+	__syscall_pwrite(fd, buf, count, 0, OFF64_HI_LO(offset))
+#endif
 
-# ifdef __UCLIBC_HAS_LFS__
-ssize_t __libc_pwrite64(int fd, const void *buf, size_t count, off64_t offset)
-{
-	uint32_t low = offset & 0xffffffff;
-	uint32_t high = offset >> 32;
-	return __syscall_pwrite(fd, buf, count, 0, __LONG_LONG_PAIR(high, low));
-}
-weak_alias(__libc_pwrite64,pwrite64)
-# endif /* __UCLIBC_HAS_LFS__  */
-#endif /* __NR_pwrite */
+#include "../common/pread_write.c"