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authorUlrich Drepper <drepper@redhat.com>2003-01-07 00:42:43 +0000
committerUlrich Drepper <drepper@redhat.com>2003-01-07 00:42:43 +0000
commit52f3d213311e34285c4809f043a5cf3a5876b897 (patch)
treeb785902a0af0ab92aabf9e3f155ca1728a607fac /sysdeps/unix/sysv/linux/powerpc/powerpc32/pread.c
parenta841816e175f7f7faeb5a019578b6b536ea336b6 (diff)
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Update.
2003-01-06  Franz Sirl  <Franz.Sirl-kernel@lauterbach.com>

	* sysdeps/powerpc/powerpc32/sysdep.h (PSEUDO_RET): Add branch hint.
	* sysdeps/unix/sysv/linux/powerpc/powerpc32/socket.S: Add cancellation
	support.
	* sysdeps/unix/sysv/linux/powerpc/powerpc32/syscalls.list: Remove
	ftruncate64, truncate64, pread64 and pwrite64 entries.
	* sysdeps/unix/sysv/linux/powerpc/powerpc32/sysdep.h
	(INLINE_SYSCALL): Add __builtin_expect.
	(LOADARGS_n): Add argument size safety checks.
	* sysdeps/unix/sysv/linux/powerpc/powerpc32/ftruncate64.c: New file.
	* sysdeps/unix/sysv/linux/powerpc/powerpc32/truncate64.c: New file.
	* sysdeps/unix/sysv/linux/powerpc/powerpc32/pread.c: New file.
	* sysdeps/unix/sysv/linux/powerpc/powerpc32/pread64.c: New file.
	* sysdeps/unix/sysv/linux/powerpc/powerpc32/pwrite.c: New file.
	* sysdeps/unix/sysv/linux/powerpc/powerpc32/pwrite64.c: New file.

2003-01-06  Jakub Jelinek  <jakub@redhat.com>

	* sysdeps/generic/sysdep-cancel.h (LIBC_CANCEL_HANDLED): Define.
	* sysdeps/generic/creat.c: Include sysdep-cancel.h.
	(LIBC_CANCEL_HANDLED): Add.

	* sysdeps/unix/sysv/linux/alpha/sysdep.h
	(inline_syscall_r0_constraint): Rename to...
	(inline_syscall_r0_out_constraint): ... this.  Add =.
	(inline_syscall[0-6]): Use inline_syscall_r0_out_constraint.
Diffstat (limited to 'sysdeps/unix/sysv/linux/powerpc/powerpc32/pread.c')
-rw-r--r--sysdeps/unix/sysv/linux/powerpc/powerpc32/pread.c87
1 files changed, 87 insertions, 0 deletions
diff --git a/sysdeps/unix/sysv/linux/powerpc/powerpc32/pread.c b/sysdeps/unix/sysv/linux/powerpc/powerpc32/pread.c
new file mode 100644
index 0000000000..495c98ab97
--- /dev/null
+++ b/sysdeps/unix/sysv/linux/powerpc/powerpc32/pread.c
@@ -0,0 +1,87 @@
+/* Copyright (C) 1997, 1998, 1999, 2000, 2002, 2003
+   Free Software Foundation, Inc.
+   This file is part of the GNU C Library.
+   Contributed by Ulrich Drepper <drepper@cygnus.com>, 1997.
+
+   The GNU C Library is free software; you can redistribute it and/or
+   modify it under the terms of the GNU Lesser General Public
+   License as published by the Free Software Foundation; either
+   version 2.1 of the License, or (at your option) any later version.
+
+   The GNU C Library 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
+   Lesser General Public License for more details.
+
+   You should have received a copy of the GNU Lesser General Public
+   License along with the GNU C Library; if not, write to the Free
+   Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA
+   02111-1307 USA.  */
+
+#include <assert.h>
+#include <errno.h>
+#include <unistd.h>
+
+#include <sysdep-cancel.h>
+#include <sys/syscall.h>
+#include <bp-checks.h>
+
+#include "kernel-features.h"
+
+#if defined __NR_pread || __ASSUME_PREAD_SYSCALL > 0
+
+# if __ASSUME_PREAD_SYSCALL == 0
+static ssize_t __emulate_pread (int fd, void *buf, size_t count,
+				off_t offset) internal_function;
+# endif
+
+
+ssize_t
+__libc_pread (fd, buf, count, offset)
+     int fd;
+     void *buf;
+     size_t count;
+     off_t offset;
+{
+  ssize_t result;
+
+  if (SINGLE_THREAD_P)
+    {
+      /* On PPC32 64bit values are aligned in odd/even register pairs.  */
+      result = INLINE_SYSCALL (pread, 6, fd, CHECK_N (buf, count), count,
+			       0, offset >> 31, offset);
+# if __ASSUME_PREAD_SYSCALL == 0
+      if (result == -1 && errno == ENOSYS)
+	/* No system call available.  Use the emulation.  */
+	result = __emulate_pread (fd, buf, count, offset);
+# endif
+
+      return result;
+    }
+  
+  int oldtype = LIBC_CANCEL_ASYNC ();
+
+  /* On PPC32 64bit values are aligned in odd/even register pairs.  */
+  result = INLINE_SYSCALL (pread, 6, fd, CHECK_N (buf, count), count,
+			       0, offset >> 31, offset);
+# if __ASSUME_PREAD_SYSCALL == 0
+  if (result == -1 && errno == ENOSYS)
+    /* No system call available.  Use the emulation.  */
+    result = __emulate_pread (fd, buf, count, offset);
+# endif
+
+  LIBC_CANCEL_RESET (oldtype);
+
+  return result;
+}
+
+strong_alias (__libc_pread, __pread)
+weak_alias (__libc_pread, pread)
+
+# define __libc_pread(fd, buf, count, offset) \
+     static internal_function __emulate_pread (fd, buf, count, offset)
+#endif
+
+#if __ASSUME_PREAD_SYSCALL == 0
+# include <sysdeps/posix/pread.c>
+#endif