mirror of
https://github.com/RIOT-OS/RIOT.git
synced 2024-12-29 04:50:03 +01:00
58 lines
903 B
C
58 lines
903 B
C
/*
|
|
* Copyright (C) 2014 Freie Universität Berlin
|
|
*
|
|
* This file is subject to the terms and conditions of the GNU Lesser General
|
|
* Public License. See the file LICENSE in the top level directory for more
|
|
* details.
|
|
*/
|
|
|
|
/**
|
|
* @ingroup cpu
|
|
* @{
|
|
*
|
|
* @file irq.c
|
|
* @brief ISR related functions
|
|
*
|
|
* @author Kaspar Schleiser <kaspar@schleiser.de>
|
|
* @author Oliver Hahm <oliver.hahm@inria.fr>
|
|
*
|
|
* @}
|
|
*/
|
|
|
|
#include "irq.h"
|
|
#include "cpu.h"
|
|
|
|
unsigned int disableIRQ()
|
|
{
|
|
unsigned int state;
|
|
__asm__("mov.w r2,%0" : "=r"(state));
|
|
state &= GIE;
|
|
|
|
if (state) {
|
|
dINT();
|
|
}
|
|
|
|
return state;
|
|
}
|
|
|
|
unsigned int enableIRQ()
|
|
{
|
|
unsigned int state;
|
|
__asm__("mov.w r2,%0" : "=r"(state));
|
|
state &= GIE;
|
|
|
|
if (!state) {
|
|
eINT();
|
|
}
|
|
|
|
return state;
|
|
}
|
|
|
|
void restoreIRQ(unsigned int state)
|
|
{
|
|
if (state) {
|
|
eINT();
|
|
}
|
|
}
|
|
|