diff options
Diffstat (limited to 'libpthread')
| -rw-r--r-- | libpthread/linuxthreads.old/sysdeps/h8300/pt-machine.h | 58 | 
1 files changed, 58 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..ad83147cb --- /dev/null +++ b/libpthread/linuxthreads.old/sysdeps/h8300/pt-machine.h @@ -0,0 +1,58 @@ +/* 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 */  | 
