[deliverable/linux.git] / include / asm-x86 / irq_regs_32.h

/*
 * Per-cpu current frame pointer - the location of the last exception frame on
 * the stack, stored in the per-cpu area.
 *
 * Jeremy Fitzhardinge <jeremy@goop.org>
 */
#ifndef _ASM_I386_IRQ_REGS_H
#define _ASM_I386_IRQ_REGS_H

#include <asm/percpu.h>

DECLARE_PER_CPU(struct pt_regs *, irq_regs);

static inline struct pt_regs *get_irq_regs(void)
{
	return x86_read_percpu(irq_regs);
}

static inline struct pt_regs *set_irq_regs(struct pt_regs *new_regs)
{
	struct pt_regs *old_regs;

	old_regs = get_irq_regs();
	x86_write_percpu(irq_regs, new_regs);

	return old_regs;
}

#endif /* _ASM_I386_IRQ_REGS_H */
Commit	Line	Data
70463dac JF	1	/*
70463dac JF	2	* Per-cpu current frame pointer - the location of the last exception frame on
7c3576d2	3	* the stack, stored in the per-cpu area.
70463dac JF	4	*
	5	* Jeremy Fitzhardinge <jeremy@goop.org>
	6	*/
	7	#ifndef _ASM_I386_IRQ_REGS_H
	8	#define _ASM_I386_IRQ_REGS_H
	9
7c3576d2 JF	10	#include <asm/percpu.h>
	11
	12	DECLARE_PER_CPU(struct pt_regs *, irq_regs);
70463dac JF	13
	14	static inline struct pt_regs *get_irq_regs(void)
	15	{
7c3576d2	16	return x86_read_percpu(irq_regs);
70463dac JF	17	}
	18
	19	static inline struct pt_regs set_irq_regs(struct pt_regs new_regs)
	20	{
	21	struct pt_regs *old_regs;
	22
7c3576d2 JF	23	old_regs = get_irq_regs();
7c3576d2 JF	24	x86_write_percpu(irq_regs, new_regs);
70463dac JF	25
	26	return old_regs;
	27	}
	28
	29	#endif /* _ASM_I386_IRQ_REGS_H */