diff options
Diffstat (limited to 'libpthread/linuxthreads.old/sysdeps/h8300/pt-machine.h')
-rw-r--r-- | libpthread/linuxthreads.old/sysdeps/h8300/pt-machine.h | 57 |
1 files changed, 57 insertions, 0 deletions
diff --git a/libpthread/linuxthreads.old/sysdeps/h8300/pt-machine.h b/libpthread/linuxthreads.old/sysdeps/h8300/pt-machine.h new file mode 100644 index 000000000..a37384de9 --- /dev/null +++ b/libpthread/linuxthreads.old/sysdeps/h8300/pt-machine.h @@ -0,0 +1,57 @@ +/* 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 */ |