linux-stable/include/asm-i386/irq_regs.h

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

#include <asm/pda.h>

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

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

	old_regs = read_pda(irq_regs);
	write_pda(irq_regs, new_regs);

	return old_regs;
}

#endif /* _ASM_I386_IRQ_REGS_H */
[PATCH] i386: Store the interrupt regs pointer in the PDA Signed-off-by: Jeremy Fitzhardinge <jeremy@goop.org> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Andi Kleen <ak@suse.de> 2006-12-07 01:14:03 +00:00			`/*`
			`* Per-cpu current frame pointer - the location of the last exception frame on`
			`* the stack, stored in the PDA.`
			`*`
			`* Jeremy Fitzhardinge <jeremy@goop.org>`
			`*/`
			`#ifndef _ASM_I386_IRQ_REGS_H`
			`#define _ASM_I386_IRQ_REGS_H`

			`#include <asm/pda.h>`

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

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

			`old_regs = read_pda(irq_regs);`
			`write_pda(irq_regs, new_regs);`

			`return old_regs;`
			`}`

			`#endif /* _ASM_I386_IRQ_REGS_H */`