blob: 24e1c080aa8a82c9f434285b1bce48a67c2af54a [file] [log] [blame]
Linus Torvalds1da177e2005-04-16 15:20:36 -07001/*
2 * Copyright 2001-2002 Pavel Machek <pavel@suse.cz>
3 * Based on code
4 * Copyright 2001 Patrick Mochel <mochel@osdl.org>
5 */
6#include <asm/desc.h>
7#include <asm/i387.h>
8
Rafael J. Wysocki2d4a34c2006-12-06 20:34:29 -08009static inline int arch_prepare_suspend(void) { return 0; }
Linus Torvalds1da177e2005-04-16 15:20:36 -070010
11/* image of the saved processor state */
12struct saved_context {
Joe Perchescf030eb2008-03-23 01:03:35 -070013 u16 es, fs, gs, ss;
Linus Torvalds1da177e2005-04-16 15:20:36 -070014 unsigned long cr0, cr2, cr3, cr4;
Glauber de Oliveira Costa6b68f012008-01-30 13:31:12 +010015 struct desc_ptr gdt;
16 struct desc_ptr idt;
Linus Torvalds1da177e2005-04-16 15:20:36 -070017 u16 ldt;
18 u16 tss;
19 unsigned long tr;
20 unsigned long safety;
21 unsigned long return_address;
22} __attribute__((packed));
23
Len Browne8b2fd02007-07-24 22:26:33 -040024#ifdef CONFIG_ACPI
Linus Torvalds1da177e2005-04-16 15:20:36 -070025extern unsigned long saved_eip;
26extern unsigned long saved_esp;
27extern unsigned long saved_ebp;
28extern unsigned long saved_ebx;
29extern unsigned long saved_esi;
30extern unsigned long saved_edi;
31
32static inline void acpi_save_register_state(unsigned long return_point)
33{
34 saved_eip = return_point;
Joe Perchescf030eb2008-03-23 01:03:35 -070035 asm volatile("movl %%esp,%0" : "=m" (saved_esp));
36 asm volatile("movl %%ebp,%0" : "=m" (saved_ebp));
37 asm volatile("movl %%ebx,%0" : "=m" (saved_ebx));
38 asm volatile("movl %%edi,%0" : "=m" (saved_edi));
39 asm volatile("movl %%esi,%0" : "=m" (saved_esi));
Linus Torvalds1da177e2005-04-16 15:20:36 -070040}
41
42#define acpi_restore_register_state() do {} while (0)
43
44/* routines for saving/restoring kernel state */
45extern int acpi_save_state_mem(void);
46#endif