/* 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, write to the Free Software Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. */ #ifndef _PT_MACHINE_H #define _PT_MACHINE_H 1 #ifndef PT_EI # define PT_EI extern inline #endif extern long int testandset (int *spinlock); /* 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 */