Update.

1999-01-15  Ulrich Drepper  <drepper@cygnus.com>

	* sysdeps/unix/sysv/linux/vfork.c: Removed.
	* sysdeps/unix/sysv/linux/i386/vfork.S: New file.

diff --git a/ChangeLog b/ChangeLog
index b3a2938..c2d47fa 100644 (file)
--- a/ChangeLog
+++ b/ChangeLog
@@ -1,3 +1,8 @@
+1999-01-15  Ulrich Drepper  <drepper@cygnus.com>
+
+       * sysdeps/unix/sysv/linux/vfork.c: Removed.
+       * sysdeps/unix/sysv/linux/i386/vfork.S: New file.
+
 1999-01-14  Ulrich Drepper  <drepper@cygnus.com>
 
        * Make-dist: If file is generated but still distributed the later

diff --git a/sysdeps/unix/sysv/linux/i386/vfork.S b/sysdeps/unix/sysv/linux/i386/vfork.S
new file mode 100644 (file)
index 0000000..118fccb
--- /dev/null
+++ b/sysdeps/unix/sysv/linux/i386/vfork.S
@@ -0,0 +1,66 @@
+/* Copyright (C) 1999 Free Software Foundation, Inc.
+   This file is part of the GNU C Library.
+   Contributed by Andreas Schwab <schwab@gnu.org>.
+
+   The GNU C Library 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.
+
+   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
+   Library General Public License for more details.
+
+   You should have received a copy of the GNU Library General Public
+   License along with the GNU C Library; see the file COPYING.LIB.  If not,
+   write to the Free Software Foundation, Inc., 59 Temple Place - Suite 330,
+   Boston, MA 02111-1307, USA.  */
+
+#include <sysdep.h>
+#define _ERRNO_H       1
+#include <bits/errno.h>
+
+/* Clone the calling process, but without copying the whole address space.
+   The calling process is suspended until the new process exits or is
+   replaced by a call to `execve'.  Return -1 for errors, 0 to the new process,
+   and the process ID of the new process to the old process.  */
+
+ENTRY (__vfork)
+
+#ifdef __NR_vfork
+
+       /* Pop the return PC value into ECX.  */
+       popl    %ecx
+
+       /* Stuff the syscall number in EAX and enter into the kernel.  */
+       movl    $SYS_ify (vfork), %eax
+       int     $0x80
+       cmpl    $-4095, %eax
+       jae     .Lerror         /* Branch forward if it failed.  */
+
+       /* Jump to the return PC.  */
+       jmp     *%ecx
+
+.Lerror:
+       /* Push back the return PC.  */
+       pushl   %ecx
+
+       /* Check if vfork syscall is known at all.  */
+       cmpl    $-ENOSYS, %eax
+       jne     SYSCALL_ERROR_LABEL
+
+#endif
+
+       /* If we don't have vfork, fork is close enough.  */
+
+       movl    $SYS_ify (fork), %eax
+       int     $0x80
+       cmpl    $-4095, %eax
+       jae     SYSCALL_ERROR_LABEL
+.Lpseudo_end:
+       ret
+
+PSEUDO_END (__vfork)
+
+weak_alias (__vfork, vfork)

diff --git a/sysdeps/unix/sysv/linux/vfork.c b/sysdeps/unix/sysv/linux/vfork.c
deleted file mode 100644 (file)
index de250e8..0000000
--- a/sysdeps/unix/sysv/linux/vfork.c
+++ /dev/null
@@ -1,50 +0,0 @@
-/* Copyright (C) 1992, 1995, 1997, 1999 Free Software Foundation, Inc.
-   This file is part of the GNU C Library.
-
-   The GNU C Library 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.
-
-   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
-   Library General Public License for more details.
-
-   You should have received a copy of the GNU Library General Public
-   License along with the GNU C Library; see the file COPYING.LIB.  If not,
-   write to the Free Software Foundation, Inc., 59 Temple Place - Suite 330,
-   Boston, MA 02111-1307, USA.  */
-
-#include <errno.h>
-#include <unistd.h>
-
-#include <sysdep.h>
-#include <sys/syscall.h>
-
-extern pid_t __syscall_fork __P ((void));
-
-#ifdef __NR_vfork
-extern pid_t __syscall_vfork __P ((void));
-
-/* Use the system call.  If it's not available, fork is close enough.  */
-
-pid_t
-__vfork __P ((void))
-{
-  pid_t retval = INLINE_SYSCALL (vfork, 0);
-
-  if (retval == (pid_t) -1 && errno == ENOSYS)
-    retval = INLINE_SYSCALL (fork, 0);
-
-  return retval;
-}
-#else
-pid_t
-__vfork __P ((void))
-{
-  return INLINE_SYSCALL (fork, 0);
-}
-#endif
-
-weak_alias (__vfork, vfork)