arch/csky/include/asm/irqflags.h

Source file repositories/reference/linux-study-clean/arch/csky/include/asm/irqflags.h

File Facts

System
Linux kernel
Corpus path
arch/csky/include/asm/irqflags.h
Extension
.h
Size
1132 bytes
Lines
50
Domain
Architecture Layer
Bucket
arch/csky
Inferred role
Architecture Layer: implementation source
Status
source implementation candidate

Why This File Exists

CPU and platform-specific kernel glue: boot entry, traps, syscall entry, interrupts, page tables, context switch, and low-level barriers.

Dependency Surface

Detected Declarations

Annotated Snippet

#ifndef __ASM_CSKY_IRQFLAGS_H
#define __ASM_CSKY_IRQFLAGS_H
#include <abi/reg_ops.h>

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

	flags = mfcr("psr");
	asm volatile("psrclr ie\n":::"memory");
	return flags;
}
#define arch_local_irq_save arch_local_irq_save

static inline void arch_local_irq_enable(void)
{
	asm volatile("psrset ee, ie\n":::"memory");
}
#define arch_local_irq_enable arch_local_irq_enable

static inline void arch_local_irq_disable(void)
{
	asm volatile("psrclr ie\n":::"memory");
}
#define arch_local_irq_disable arch_local_irq_disable

static inline unsigned long arch_local_save_flags(void)
{
	return mfcr("psr");
}
#define arch_local_save_flags arch_local_save_flags

static inline void arch_local_irq_restore(unsigned long flags)
{
	mtcr("psr", flags);
}
#define arch_local_irq_restore arch_local_irq_restore

static inline int arch_irqs_disabled_flags(unsigned long flags)
{
	return !(flags & (1<<6));
}
#define arch_irqs_disabled_flags arch_irqs_disabled_flags

#include <asm-generic/irqflags.h>

#endif /* __ASM_CSKY_IRQFLAGS_H */

Annotation

Implementation Notes