linux/include/asm-x86/suspend_32.h

/*
 * Copyright 2001-2002 Pavel Machek <pavel@suse.cz>
 * Based on code
 * Copyright 2001 Patrick Mochel <mochel@osdl.org>
 */
#ifndef __ASM_X86_32_SUSPEND_H
#define __ASM_X86_32_SUSPEND_H

#include <asm/desc.h>
#include <asm/i387.h>

static inline int arch_prepare_suspend(void) { return 0; }

/* image of the saved processor state */
struct saved_context {
	u16 es, fs, gs, ss;
	unsigned long cr0, cr2, cr3, cr4;
	struct desc_ptr gdt;
	struct desc_ptr idt;
	u16 ldt;
	u16 tss;
	unsigned long tr;
	unsigned long safety;
	unsigned long return_address;
} __attribute__((packed));

#ifdef CONFIG_ACPI
extern unsigned long saved_eip;
extern unsigned long saved_esp;
extern unsigned long saved_ebp;
extern unsigned long saved_ebx;
extern unsigned long saved_esi;
extern unsigned long saved_edi;

static inline void acpi_save_register_state(unsigned long return_point)
{
	saved_eip = return_point;
	asm volatile("movl %%esp,%0" : "=m" (saved_esp));
	asm volatile("movl %%ebp,%0" : "=m" (saved_ebp));
	asm volatile("movl %%ebx,%0" : "=m" (saved_ebx));
	asm volatile("movl %%edi,%0" : "=m" (saved_edi));
	asm volatile("movl %%esi,%0" : "=m" (saved_esi));
}

#define acpi_restore_register_state()  do {} while (0)

/* routines for saving/restoring kernel state */
extern int acpi_save_state_mem(void);
#endif

#endif /* __ASM_X86_32_SUSPEND_H */