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- /* Copyright (C) 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
- 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 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)
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