| 1234567891011121314151617181920212223242526272829303132333435363738394041424344454647484950515253545556 |
- /* Machine-dependent pthreads configuration and inline functions.
- SuperH version.
- Copyright (C) 1999, 2000, 2001 Free Software Foundation, Inc.
- This file is part of the GNU C Library.
- Contributed by Niibe Yutaka <gniibe@m17n.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. */
- #ifndef PT_EI
- # define PT_EI extern inline
- #endif
- /* Spinlock implementation; required. */
- PT_EI long int
- testandset (int *spinlock)
- {
- int ret;
- __asm__ __volatile__(
- "tas.b @%1\n\t"
- "movt %0"
- : "=r" (ret)
- : "r" (spinlock)
- : "memory", "cc");
- return (ret == 0);
- }
- /* 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__ ("r15");
- /* Return the thread descriptor for the current thread. */
- struct _pthread_descr_struct;
- #define THREAD_SELF \
- ({ struct _pthread_descr_struct *self; \
- __asm__("stc gbr,%0" : "=r" (self)); self;})
- /* Initialize the thread-unique value. */
- #define INIT_THREAD_SELF(descr, nr) \
- ({ __asm__("ldc %0,gbr" : : "r" (descr));})
|
