blob: 08be1e5009d4d773dbb77078674450ceb117f6ba [file] [log] [blame]
* Copyright 2001-2002 Pavel Machek <>
* Based on code
* Copyright 2001 Patrick Mochel <>
#include <asm/desc.h>
#include <asm/i387.h>
static inline int
/* If you want to make non-PSE machine work, turn off paging
in swsusp_arch_suspend. swsusp_pg_dir should have identity mapping, so
it could work... */
if (!cpu_has_pse) {
printk(KERN_ERR "PSE is required for swsusp.\n");
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));
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);