| /* Copyright (C) 2004-2014 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 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, see |
| <http://www.gnu.org/licenses/>. */ |
| |
| #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; \ |
| /* If the cached value is initialized (nonzero), then write \ |
| back its negation, or INT_MIN, to indicate that the pid \ |
| value is uninitialized in the child, and in the window \ |
| between here and the point at which we restore the value. */ \ |
| ldah t0, -0x8000; \ |
| negl a2, t1; \ |
| cmovne a2, t1, 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_END (__vfork) |
| libc_hidden_def (__vfork) |
| weak_alias (__vfork, vfork) |
