[deliverable/linux.git] / arch / x86 / include / asm / 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_X86_IRQ_REGS_32_H
#define _ASM_X86_IRQ_REGS_32_H

#include <asm/percpu.h>

#define ARCH_HAS_OWN_IRQ_REGS

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_X86_IRQ_REGS_32_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	*/
1965aae3 PA	7	#ifndef _ASM_X86_IRQ_REGS_32_H
1965aae3 PA	8	#define _ASM_X86_IRQ_REGS_32_H
70463dac	9
7c3576d2 JF	10	#include <asm/percpu.h>
7c3576d2 JF	11
19f47c63 HH	12	#define ARCH_HAS_OWN_IRQ_REGS
19f47c63 HH	13
7c3576d2	14	DECLARE_PER_CPU(struct pt_regs *, irq_regs);
70463dac JF	15
	16	static inline struct pt_regs *get_irq_regs(void)
	17	{
7c3576d2	18	return x86_read_percpu(irq_regs);
70463dac JF	19	}
	20
	21	static inline struct pt_regs set_irq_regs(struct pt_regs new_regs)
	22	{
	23	struct pt_regs *old_regs;
	24
7c3576d2 JF	25	old_regs = get_irq_regs();
7c3576d2 JF	26	x86_write_percpu(irq_regs, new_regs);
70463dac JF	27
	28	return old_regs;
	29	}
	30
1965aae3	31	#endif /* _ASM_X86_IRQ_REGS_32_H */