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psw.c
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psw.c
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/* -*- mode: c; coding:utf-8 -*- */
/**********************************************************************/
/* OS kernel sample */
/* Copyright 2014 Takeharu KATO */
/* */
/* Processor Status Word */
/* */
/**********************************************************************/
#include <stdint.h>
#include "aarch64.h"
#include "psw.h"
/** Disable interrupt at CPU level
@ param [in] pswp Processor status word return area before interrupt disabled
*/
void psw_disable_and_save_interrupt(psw_t *pswp) {
psw_t psw;
__save_psw(psw);
psw_disable_interrupt();
*pswp = psw;
}
/** Restore interrupt status at CPU level
@ param [in] pswp Processor status word return area
*/
void psw_restore_interrupt(psw_t *pswp) {
psw_t psw;
psw = *pswp;
__restore_psw(psw);
}