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| author | Richard Henderson <rth@redhat.com> | 2004-03-11 21:34:25 +0000 |
|---|---|---|
| committer | Richard Henderson <rth@redhat.com> | 2004-03-11 21:34:25 +0000 |
| commit | 9852f6dcfff04f9ab05ab1d19845108b5a4783ab (patch) | |
| tree | 5d790acca723760864742bf872ba2012a0e8af47 /nptl/sysdeps/unix/sysv/linux/alpha/pt-vfork.S | |
| parent | 43513fb738808dc2ab14b17aaf5be05d103340d4 (diff) | |
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* sysdeps/alpha/tcb-offsets.sym (PID_OFFSET): New. * sysdeps/unix/sysv/linux/alpha/pt-vfork.S: Save/restore PID. * sysdeps/unix/sysv/linux/alpha/vfork.S: New file.
2004-03-11 Richard Henderson <rth@redhat.com>
* sysdeps/alpha/tcb-offsets.sym (PID_OFFSET): New.
* sysdeps/unix/sysv/linux/alpha/pt-vfork.S: Save/restore PID.
* sysdeps/unix/sysv/linux/alpha/vfork.S: New file.
Diffstat (limited to 'nptl/sysdeps/unix/sysv/linux/alpha/pt-vfork.S')
| -rw-r--r-- | nptl/sysdeps/unix/sysv/linux/alpha/pt-vfork.S | 26 |
1 files changed, 22 insertions, 4 deletions
diff --git a/nptl/sysdeps/unix/sysv/linux/alpha/pt-vfork.S b/nptl/sysdeps/unix/sysv/linux/alpha/pt-vfork.S index 4a2df4255b..ec5d175bec 100644 --- a/nptl/sysdeps/unix/sysv/linux/alpha/pt-vfork.S +++ b/nptl/sysdeps/unix/sysv/linux/alpha/pt-vfork.S @@ -1,4 +1,4 @@ -/* Copyright (C) 2003 Free Software Foundation, Inc. +/* Copyright (C) 2003, 2004 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 @@ -16,10 +16,28 @@ Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA. */ -#include <sysdep-cancel.h> +#include <sysdep.h> +#include <tcb-offsets.h> + +#undef PSEUDO_PREPARE_ARGS +#define PSEUDO_PREPARE_ARGS \ + /* Load the current cached pid value across the vfork. */ \ + rduniq; \ + ldl a2, PID_OFFSET(v0); \ + mov v0, a1; \ + /* Write back its negation, to indicate that the pid value is \ + uninitialized in the the child, and in the window between \ + here and the point at which we restore the value. */ \ + negl a2, t0; \ + stl t0, PID_OFFSET(v0); + +PSEUDO (__vfork, vfork, 0) + + /* If we're back in the parent, restore the saved pid. */ + beq v0, 1f + stl a2, PID_OFFSET(a1) +1: ret -PSEUDO(__vfork, vfork, 0) - ret PSEUDO_END (__vfork) weak_alias (__vfork, vfork) |