Update of /cvsroot/linux-vax/glibc/linuxthreads/sysdeps/vax
In directory sc8-pr-cvs1:/tmp/cvs-serv2890
Added Files:
pt-machine.h
Log Message:
DA: pt-machine.h lifted from my uclibc port
--- NEW FILE: pt-machine.h ---
/* Machine-dependent pthreads configuration and inline functions.
VAX version.
Copyright (C) 1996, 1998 Free Software Foundation, Inc.
This file is part of the GNU C Library.
Contributed by David Airlie (airlied at linux.ie)
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)
{
char ret;
__asm__ __volatile__(
"movl $1, %%r0\n\t"
"bbssi $0, (%1), 1f\n\t"
"clrl %%r0\n\t"
"1: movl %%r0, %0"
: "=r"(ret)
: "r"(spinlock)
: "r0");
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");
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