LXR linux/arch/x86/include/asm/suspend

   1/*
   2 * Copyright 2001-2003 Pavel Machek <pavel@suse.cz>
   3 * Based on code
   4 * Copyright 2001 Patrick Mochel <mochel@osdl.org>
   5 */
   6#ifndef _ASM_X86_SUSPEND_64_H
   7#define _ASM_X86_SUSPEND_64_H
   8
   9#include <asm/desc.h>
  10#include <asm/i387.h>
  11
  12static inline int arch_prepare_suspend(void)
  13{
  14        return 0;
  15}
  16
  17/*
  18 * Image of the saved processor state, used by the low level ACPI suspend to
  19 * RAM code and by the low level hibernation code.
  20 *
  21 * If you modify it, fix arch/x86/kernel/acpi/wakeup_64.S and make sure that
  22 * __save/__restore_processor_state(), defined in arch/x86/kernel/suspend_64.c,
  23 * still work as required.
  24 */
  25struct saved_context {
  26        struct pt_regs regs;
  27        u16 ds, es, fs, gs, ss;
  28        unsigned long gs_base, gs_kernel_base, fs_base;
  29        unsigned long cr0, cr2, cr3, cr4, cr8;
  30        unsigned long efer;
  31        u16 gdt_pad;
  32        u16 gdt_limit;
  33        unsigned long gdt_base;
  34        u16 idt_pad;
  35        u16 idt_limit;
  36        unsigned long idt_base;
  37        u16 ldt;
  38        u16 tss;
  39        unsigned long tr;
  40        unsigned long safety;
  41        unsigned long return_address;
  42} __attribute__((packed));
  43
  44#define loaddebug(thread,register) \
  45        set_debugreg((thread)->debugreg##register, register)
  46
  47/* routines for saving/restoring kernel state */
  48extern int acpi_save_state_mem(void);
  49extern char core_restore_code;
  50extern char restore_registers;
  51
  52#endif /* _ASM_X86_SUSPEND_64_H */
  53