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/*
 * Copyright 2001-2002 Pavel Machek <pavel@suse.cz>
 * Based on code
 * Copyright 2001 Patrick Mochel <mochel@osdl.org>
 */
#include <asm/desc.h>
#include <asm/i387.h>

static inline int
arch_prepare_suspend(void)
{
        if (!cpu_has_pse)
                return -EPERM;
        return 0;
}

/* image of the saved processor state */
struct saved_context {
        u16 es, fs, gs, ss;
        unsigned long cr0, cr2, cr3, cr4;
        u16 gdt_pad;
        u16 gdt_limit;
        unsigned long gdt_base;
        u16 idt_pad;
        u16 idt_limit;
        unsigned long idt_base;
        u16 ldt;
        u16 tss;
        unsigned long tr;
        unsigned long safety;
        unsigned long return_address;
} __attribute__((packed));

#define loaddebug(thread,register) \
               __asm__("movl %0,%%db" #register  \
                       : /* no output */ \
                       :"r" ((thread)->debugreg[register]))

extern void save_processor_state(void);
extern void restore_processor_state(void);

#ifdef CONFIG_ACPI_SLEEP
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);
extern int acpi_save_state_disk(void);
#endif