All Classes Files Functions Variables Typedefs Enumerations Enumerator Macros Groups Pages
macros-powerpc.h
/* -*- mode: c++; indent-tabs-mode: nil -*- */
/*
Qore Programming Language
Copyright 2003 - 2013 David Nichols
This 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.
This 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 this library; if not, write to the Free Software
Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
*/
#ifndef _QORE_CONFIG_MACHINE_MACROS_H
#define _QORE_CONFIG_MACHINE_MACROS_H
// only have support for 32-bit ppc for now
#ifndef __ppc64
#define HAVE_ATOMIC_MACROS
static inline int atomic_inc(int *v)
{
int t;
asm volatile(
"1: lwarx %0,0,%1\n"
" addic %0,%0,1\n"
" stwcx. %0,0,%1\n"
" bne- 1b"
: "=&r" (t)
: "r" (v)
: "cc", "memory");
return t;
}
static inline int atomic_dec(int *v)
{
int t;
asm volatile(
"1: lwarx %0,0,%1\n"
" addic %0,%0,-1\n"
" stwcx. %0,0,%1\n"
" bne- 1b"
: "=&r" (t)
: "r" (v)
: "cc", "memory");
return !t;
}
#define HAVE_CHECK_STACK_POS
#define STACK_DIRECTION_DOWN 1
static inline size_t get_stack_pos() {
size_t addr;
__asm("mr %0, r1" : "=r" (addr) );
return addr;
}
#endif
#endif