[git commit future] pread_write.c: make all archs use common code
Peter S. Mazinger
ps.m at gmx.net
Wed Apr 20 10:50:38 UTC 2011
commit: http://git.uclibc.org/uClibc/commit/?id=a18a6153a0c29fb4a418dc80a975b3cdd9ed450a
branch: http://git.uclibc.org/uClibc/commit/?id=refs/heads/future
c6x does not need own version at all
Signed-off-by: Peter S. Mazinger <ps.m at gmx.net>
---
libc/sysdeps/linux/c6x/Makefile.arch | 2 +-
libc/sysdeps/linux/c6x/pread_write.c | 103 ----------------
libc/sysdeps/linux/mips/pread_write.c | 122 +++++--------------
libc/sysdeps/linux/powerpc/pread_write.c | 187 ++++--------------------------
libc/sysdeps/linux/sh/pread_write.c | 115 +++----------------
libc/sysdeps/linux/xtensa/pread_write.c | 189 +++--------------------------
6 files changed, 91 insertions(+), 627 deletions(-)
delete mode 100644 libc/sysdeps/linux/c6x/pread_write.c
diff --git a/libc/sysdeps/linux/c6x/Makefile.arch b/libc/sysdeps/linux/c6x/Makefile.arch
index 3e8dace..a7b44a7 100644
--- a/libc/sysdeps/linux/c6x/Makefile.arch
+++ b/libc/sysdeps/linux/c6x/Makefile.arch
@@ -5,7 +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 f985b43..0000000
--- 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 at 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/mips/pread_write.c b/libc/sysdeps/linux/mips/pread_write.c
index ea6b15f..4e1210f 100644
--- a/libc/sysdeps/linux/mips/pread_write.c
+++ b/libc/sysdeps/linux/mips/pread_write.c
@@ -4,112 +4,56 @@
*
* 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_pread
-# error "__NR_pread and __NR_pread64 both defined???"
-# endif
+#ifdef __NR_pread64
# 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 */
-
-/**********************************************************************/
-
-#ifdef __NR_pwrite64 /* Newer kernels renamed but it's the same. */
-# ifdef __NR_pwrite
-# error "__NR_pwrite and __NR_pwrite64 both defined???"
+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
# define __NR_pwrite __NR_pwrite64
#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 7f988d3..dcc6967 100644
--- a/libc/sysdeps/linux/powerpc/pread_write.c
+++ b/libc/sysdeps/linux/powerpc/pread_write.c
@@ -1,183 +1,40 @@
-/* vi: set sw=4 ts=4:
- *
+/* vi: set sw=4 ts=4: */
+/*
* Copyright (C) 2000-2006 Erik Andersen <andersen at 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
+#ifdef __NR_pread64
+# define __NR_pread __NR_pread64
#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
+# define __NR_pwrite __NR_pwrite64
+#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)
-
-# 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 */
-
-
-
-#if ! defined __NR_pread || ! defined __NR_pwrite
-
-static ssize_t __fake_pread_write(int fd, void *buf,
- size_t count, off_t offset, int do_pwrite)
-{
- int save_errno;
- ssize_t result;
- off_t old_offset;
-
- /* Since we must not change the file pointer preserve the
- * value so that we can restore it later. */
- if ((old_offset=lseek(fd, 0, SEEK_CUR)) == (off_t) -1)
- return -1;
-
- /* Set to wanted position. */
- if (lseek (fd, offset, SEEK_SET) == (off_t) -1)
- return -1;
-
- if (do_pwrite == 1) {
- /* Write the data. */
- result = write(fd, buf, count);
- } else {
- /* Read the data. */
- result = read(fd, buf, count);
- }
-
- /* Now we have to restore the position. If this fails we
- * have to return this as an error. */
- save_errno = errno;
- if (lseek(fd, old_offset, SEEK_SET) == (off_t) -1)
- {
- if (result == -1)
- __set_errno(save_errno);
- return -1;
- }
- __set_errno(save_errno);
- return(result);
-}
-
-# ifdef __UCLIBC_HAS_LFS__
-
-static ssize_t __fake_pread_write64(int fd, void *buf,
- size_t count, off64_t offset, int do_pwrite)
-{
- int save_errno;
- ssize_t result;
- off64_t old_offset;
-
- /* Since we must not change the file pointer preserve the
- * value so that we can restore it later. */
- if ((old_offset=lseek64(fd, 0, SEEK_CUR)) == (off64_t) -1)
- return -1;
-
- /* Set to wanted position. */
- if (lseek64(fd, offset, SEEK_SET) == (off64_t) -1)
- return -1;
-
- if (do_pwrite == 1) {
- /* Write the data. */
- result = write(fd, buf, count);
- } else {
- /* Read the data. */
- result = read(fd, buf, count);
- }
-
- /* Now we have to restore the position. */
- save_errno = errno;
- if (lseek64 (fd, old_offset, SEEK_SET) == (off64_t) -1) {
- if (result == -1)
- __set_errno (save_errno);
- return -1;
- }
- __set_errno (save_errno);
- return result;
-}
-# endif /* __UCLIBC_HAS_LFS__ */
-#endif /* ! defined __NR_pread || ! defined __NR_pwrite */
-
-#ifndef __NR_pread
-ssize_t __libc_pread(int fd, void *buf, size_t count, off_t offset);
-ssize_t __libc_pread(int fd, void *buf, size_t count, off_t offset)
-{
- return(__fake_pread_write(fd, buf, count, offset, 0));
-}
-weak_alias(__libc_pread,pread)
-
-# ifdef __UCLIBC_HAS_LFS__
-ssize_t __libc_pread64(int fd, void *buf, size_t count, off64_t offset);
-ssize_t __libc_pread64(int fd, void *buf, size_t count, off64_t offset)
-{
- return(__fake_pread_write64(fd, buf, count, offset, 0));
-}
-weak_alias(__libc_pread64,pread64)
-# endif /* __UCLIBC_HAS_LFS__ */
-#endif /* ! __NR_pread */
-
-
-#ifndef __NR_pwrite
-ssize_t __libc_pwrite(int fd, const void *buf, size_t count, off_t offset);
-ssize_t __libc_pwrite(int fd, const void *buf, size_t count, off_t offset)
-{
- return(__fake_pread_write(fd, (void*)buf, count, offset, 1));
-}
-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);
-ssize_t __libc_pwrite64(int fd, const void *buf, size_t count, off64_t offset)
-{
- return(__fake_pread_write64(fd, (void*)buf, count, offset, 1));
-}
-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 86feb9c..dcc6967 100644
--- a/libc/sysdeps/linux/sh/pread_write.c
+++ b/libc/sysdeps/linux/sh/pread_write.c
@@ -4,122 +4,37 @@
*
* 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_pread
-# error "__NR_pread and __NR_pread64 both defined???"
-# endif
+#ifdef __NR_pread64
# define __NR_pread __NR_pread64
#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_pwrite
-# error "__NR_pwrite and __NR_pwrite64 both defined???"
-# endif
+#ifdef __NR_pwrite64
# define __NR_pwrite __NR_pwrite64
#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 71ba22b..dcc6967 100644
--- a/libc/sysdeps/linux/xtensa/pread_write.c
+++ b/libc/sysdeps/linux/xtensa/pread_write.c
@@ -4,186 +4,37 @@
*
* 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;
+#ifdef __NR_pread64
+# define __NR_pread __NR_pread64
#endif
-#include <bits/kernel_types.h>
-
#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__ */
+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 /* __NR_pread */
+#ifdef __NR_pwrite64
+# define __NR_pwrite __NR_pwrite64
+#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)
-
-# 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 */
-
-#if ! defined __NR_pread || ! defined __NR_pwrite
-
-static ssize_t __fake_pread_write(int fd, void *buf,
- size_t count, off_t offset, int do_pwrite)
-{
- int save_errno;
- ssize_t result;
- off_t old_offset;
-
- /* Since we must not change the file pointer preserve the
- * value so that we can restore it later. */
- if ((old_offset=lseek(fd, 0, SEEK_CUR)) == (off_t) -1)
- return -1;
-
- /* Set to wanted position. */
- if (lseek(fd, offset, SEEK_SET) == (off_t) -1)
- return -1;
-
- if (do_pwrite == 1) {
- /* Write the data. */
- result = write(fd, buf, count);
- } else {
- /* Read the data. */
- result = read(fd, buf, count);
- }
-
- /* Now we have to restore the position. If this fails we
- * have to return this as an error. */
- save_errno = errno;
- if (lseek(fd, old_offset, SEEK_SET) == (off_t) -1)
- {
- if (result == -1)
- __set_errno(save_errno);
- return -1;
- }
- __set_errno(save_errno);
- return(result);
-}
-
-# ifdef __UCLIBC_HAS_LFS__
-
-static ssize_t __fake_pread_write64(int fd, void *buf,
- size_t count, off64_t offset, int do_pwrite)
-{
- int save_errno;
- ssize_t result;
- off64_t old_offset;
-
- /* Since we must not change the file pointer preserve the
- * value so that we can restore it later. */
- if ((old_offset=lseek64(fd, 0, SEEK_CUR)) == (off64_t) -1)
- return -1;
-
- /* Set to wanted position. */
- if (lseek64(fd, offset, SEEK_SET) == (off64_t) -1)
- return -1;
-
- if (do_pwrite == 1) {
- /* Write the data. */
- result = write(fd, buf, count);
- } else {
- /* Read the data. */
- result = read(fd, buf, count);
- }
-
- /* Now we have to restore the position. */
- save_errno = errno;
- if (lseek64(fd, old_offset, SEEK_SET) == (off64_t) -1) {
- if (result == -1)
- __set_errno (save_errno);
- return -1;
- }
- __set_errno (save_errno);
- return result;
-}
-# endif /* __UCLIBC_HAS_LFS__ */
-#endif /* ! defined __NR_pread || ! defined __NR_pwrite */
-
-#ifndef __NR_pread
-ssize_t __libc_pread(int fd, void *buf, size_t count, off_t offset)
-{
- return __fake_pread_write(fd, buf, count, offset, 0);
-}
-weak_alias(__libc_pread,pread)
-
-# ifdef __UCLIBC_HAS_LFS__
-ssize_t __libc_pread64(int fd, void *buf, size_t count, off64_t offset)
-{
- return __fake_pread_write64(fd, buf, count, offset, 0);
-}
-weak_alias(__libc_pread64,pread64)
-# endif /* __UCLIBC_HAS_LFS__ */
-#endif /* ! __NR_pread */
-
-#ifndef __NR_pwrite
-ssize_t __libc_pwrite(int fd, const void *buf, size_t count, off_t offset)
-{
- /* we won't actually be modifying the buffer,
- *just cast it to get rid of warnings */
- return __fake_pread_write(fd, (void*)buf, count, offset, 1);
-}
-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)
-{
- return __fake_pread_write64(fd, (void*)buf, count, offset, 1);
-}
-weak_alias(__libc_pwrite64,pwrite64)
-# endif /* __UCLIBC_HAS_LFS__ */
-#endif /* ! __NR_pwrite */
+#include "../common/pread_write.c"
--
1.7.3.4
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