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>

1 files changed, 17 insertions, 62 deletions

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"