2 * Copyright 2001-2002 Pavel Machek <pavel@suse.cz>
4 * Copyright 2001 Patrick Mochel <mochel@osdl.org>
10 arch_prepare_suspend(void)
12 /* If you want to make non-PSE machine work, turn off paging
13 in swsusp_arch_suspend. swsusp_pg_dir should have identity mapping, so
16 printk(KERN_ERR "PSE is required for swsusp.\n");
22 /* image of the saved processor state */
23 struct saved_context {
25 unsigned long cr0, cr2, cr3, cr4;
28 unsigned long gdt_base;
31 unsigned long idt_base;
36 unsigned long return_address;
37 } __attribute__((packed));
39 #define loaddebug(thread,register) \
40 __asm__("movl %0,%%db" #register \
42 :"r" ((thread)->debugreg[register]))
44 #ifdef CONFIG_ACPI_SLEEP
45 extern unsigned long saved_eip;
46 extern unsigned long saved_esp;
47 extern unsigned long saved_ebp;
48 extern unsigned long saved_ebx;
49 extern unsigned long saved_esi;
50 extern unsigned long saved_edi;
52 static inline void acpi_save_register_state(unsigned long return_point)
54 saved_eip = return_point;
55 asm volatile ("movl %%esp,%0" : "=m" (saved_esp));
56 asm volatile ("movl %%ebp,%0" : "=m" (saved_ebp));
57 asm volatile ("movl %%ebx,%0" : "=m" (saved_ebx));
58 asm volatile ("movl %%edi,%0" : "=m" (saved_edi));
59 asm volatile ("movl %%esi,%0" : "=m" (saved_esi));
62 #define acpi_restore_register_state() do {} while (0)
64 /* routines for saving/restoring kernel state */
65 extern int acpi_save_state_mem(void);