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Linus Torvalds1da177e2005-04-16 15:20:36 -07001/*
2 * Copyright 2001-2003 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
9static inline int
10arch_prepare_suspend(void)
11{
12 return 0;
13}
14
15/* Image of the saved processor state. If you touch this, fix acpi_wakeup.S. */
16struct saved_context {
17 u16 ds, es, fs, gs, ss;
18 unsigned long gs_base, gs_kernel_base, fs_base;
Pavel Machek8d783b32005-06-25 14:55:14 -070019 unsigned long cr0, cr2, cr3, cr4, cr8;
Vivek Goyal3c321bc2007-05-02 19:27:07 +020020 unsigned long efer;
Linus Torvalds1da177e2005-04-16 15:20:36 -070021 u16 gdt_pad;
22 u16 gdt_limit;
23 unsigned long gdt_base;
24 u16 idt_pad;
25 u16 idt_limit;
26 unsigned long idt_base;
27 u16 ldt;
28 u16 tss;
29 unsigned long tr;
30 unsigned long safety;
31 unsigned long return_address;
32 unsigned long eflags;
33} __attribute__((packed));
34
35/* We'll access these from assembly, so we'd better have them outside struct */
36extern unsigned long saved_context_eax, saved_context_ebx, saved_context_ecx, saved_context_edx;
37extern unsigned long saved_context_esp, saved_context_ebp, saved_context_esi, saved_context_edi;
38extern unsigned long saved_context_r08, saved_context_r09, saved_context_r10, saved_context_r11;
39extern unsigned long saved_context_r12, saved_context_r13, saved_context_r14, saved_context_r15;
40extern unsigned long saved_context_eflags;
41
42#define loaddebug(thread,register) \
Jan Beulich2b514e72006-03-25 16:29:22 +010043 set_debugreg((thread)->debugreg##register, register)
Linus Torvalds1da177e2005-04-16 15:20:36 -070044
45extern void fix_processor_context(void);
46
Vivek Goyal7db681d2007-05-02 19:27:07 +020047extern unsigned long saved_rip;
48extern unsigned long saved_rsp;
49extern unsigned long saved_rbp;
50extern unsigned long saved_rbx;
51extern unsigned long saved_rsi;
52extern unsigned long saved_rdi;
Linus Torvalds1da177e2005-04-16 15:20:36 -070053
54/* routines for saving/restoring kernel state */
55extern int acpi_save_state_mem(void);