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/*
* Copyright © 2012 Keith Packard <keithp@keithp.com>
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; version 2 of the License.
*
* This program 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
* General Public License for more details.
*
* You should have received a copy of the GNU General Public License along
* with this program; if not, write to the Free Software Foundation, Inc.,
* 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA.
*/
#include <ao.h>
static volatile void *ao_wchan;
uint8_t
ao_sleep(__xdata void *wchan)
{
#if 1
ao_wchan = wchan;
ao_arch_wait_interrupt();
#else
uint8_t sreg;
ao_wchan = wchan;
asm("in %0,__SREG__" : "=&r" (sreg));
sei();
while (ao_wchan)
ao_arch_cpu_idle();
asm("out __SREG__,%0" : : "r" (sreg));
#endif
return 0;
}
void
ao_wakeup(__xdata void *wchan)
{
(void) wchan;
ao_wchan = 0;
}
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