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- /* Machine-dependent pthreads configuration and inline functions.
- H8/300 version.
- Copyright (C) 1996, 1998, 2000, 2002 Free Software Foundation, Inc.
- This file is part of the GNU C Library.
- Contributed by Richard Henderson <rth@tamu.edu>.
- 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; see the file COPYING.LIB. If
- not, see <http://www.gnu.org/licenses/>. */
- #ifndef _PT_MACHINE_H
- #define _PT_MACHINE_H 1
- #include <features.h>
- #ifndef PT_EI
- # define PT_EI __extern_always_inline
- #endif
- /* Spinlock implementation; required. */
- PT_EI long int
- testandset (int *spinlock)
- {
- char ret;
- __asm__ __volatile__(
- "sub.w %0,%0\n\t"
- "stc ccr,@-sp\n\t"
- "orc #0x80,ccr\n\t"
- "bld #0,@%2\n\t"
- "bset #0,@%2\n\t"
- "rotxl.w %0\n\t"
- "ldc @sp+,ccr\n\t"
- :"=r"(ret),"=m"(*spinlock)
- :"g"(spinlock)
- :"cc");
- return ret;
- }
- /* Get some notion of the current stack. Need not be exactly the top
- of the stack, just something somewhere in the current frame. */
- #define CURRENT_STACK_FRAME stack_pointer
- register char * stack_pointer __asm__ ("%sp");
- #endif /* pt-machine.h */
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