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/*
 * Copyright (C) 2010 Thomas Chou <thomas@wytron.com.tw>
 *
 * 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; either version 2 of the License, or
 * (at your option) any later version.
 *
 * 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, see <http://www.gnu.org/licenses/>.
 *
 */
#ifndef _ASM_IRQFLAGS_H
#define _ASM_IRQFLAGS_H

#include <asm/registers.h>

static inline unsigned long arch_local_save_flags(void)
{
	return RDCTL(CTL_FSTATUS);
}

/*
 * This will restore ALL status register flags, not only the interrupt
 * mask flag.
 */
static inline void arch_local_irq_restore(unsigned long flags)
{
	WRCTL(CTL_FSTATUS, flags);
}

static inline void arch_local_irq_disable(void)
{
	unsigned long flags;

	flags = arch_local_save_flags();
	arch_local_irq_restore(flags & ~STATUS_PIE);
}

static inline void arch_local_irq_enable(void)
{
	unsigned long flags;

	flags = arch_local_save_flags();
	arch_local_irq_restore(flags | STATUS_PIE);
}

static inline int arch_irqs_disabled_flags(unsigned long flags)
{
	return (flags & STATUS_PIE) == 0;
}

static inline int arch_irqs_disabled(void)
{
	return arch_irqs_disabled_flags(arch_local_save_flags());
}

static inline unsigned long arch_local_irq_save(void)
{
	unsigned long flags;

	flags = arch_local_save_flags();
	arch_local_irq_restore(flags & ~STATUS_PIE);
	return flags;
}

#endif /* _ASM_IRQFLAGS_H */

Filemanager

Name Type Size Permission Actions
Kbuild File 958 B 0644
asm-macros.h File 6.71 KB 0644
asm-offsets.h File 813 B 0644
cache.h File 1.14 KB 0644
cacheflush.h File 1.91 KB 0644
checksum.h File 2.03 KB 0644
cpuinfo.h File 1.42 KB 0644
delay.h File 547 B 0644
dma-mapping.h File 547 B 0644
elf.h File 3.2 KB 0644
entry.h File 2.6 KB 0644
io.h File 1.72 KB 0644
irq.h File 907 B 0644
irqflags.h File 1.75 KB 0644
kgdb.h File 1.88 KB 0644
linkage.h File 809 B 0644
mmu.h File 445 B 0644
mmu_context.h File 1.69 KB 0644
page.h File 3.08 KB 0644
pgalloc.h File 1.86 KB 0644
pgtable-bits.h File 1.05 KB 0644
pgtable.h File 7.99 KB 0644
processor.h File 2.18 KB 0644
ptrace.h File 2.29 KB 0644
registers.h File 2.15 KB 0644
setup.h File 1.04 KB 0644
shmparam.h File 804 B 0644
string.h File 618 B 0644
switch_to.h File 866 B 0644
syscall.h File 2.6 KB 0644
syscalls.h File 883 B 0644
thread_info.h File 3.37 KB 0644
timex.h File 912 B 0644
tlb.h File 963 B 0644
tlbflush.h File 1.56 KB 0644
traps.h File 514 B 0644
uaccess.h File 5.18 KB 0644