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, 33 insertions, 83 deletions

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"