/* Machine-dependent pthreads configuration and inline functions. sparc version. Copyright (C) 1996, 1997, 1998 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 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 int testandset (int *spinlock) { int ret; __asm__ __volatile__("ldstub %1,%0" : "=r"(ret), "=m"(*spinlock) : "m"(*spinlock)); return ret; } /* Spinlock release; default is just set to zero. */ #define RELEASE(spinlock) \ __asm__ __volatile__("stbar; stb %1,%0" : "=m"(*(spinlock)) : "r"(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__("%sp"); /* Registers %g6 and %g7 are reserved by the ABI for "system use". It happens that Solaris uses %g6 for the thread pointer -- we do the same. */ struct _pthread_descr_struct; register struct _pthread_descr_struct *__thread_self __asm__("%g6"); /* Return the thread descriptor for the current thread. */ #define THREAD_SELF __thread_self /* Initialize the thread-unique value. */ #define INIT_THREAD_SELF(descr, nr) (__thread_self = (descr)) /* Access to data in the thread descriptor is easy. */ #define THREAD_GETMEM(descr, member) __thread_self->member #define THREAD_GETMEM_NC(descr, member) __thread_self->member #define THREAD_SETMEM(descr, member, value) __thread_self->member = (value) #define THREAD_SETMEM_NC(descr, member, value) __thread_self->member = (value)