include/asm-x86/suspend_64.h

   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_64_SUSPEND_H
   7 #define __ASM_X86_64_SUSPEND_H
   8
   9 #include <asm/desc.h>
  10 #include <asm/i387.h>
  11
  12 static inline int
  13 arch_prepare_suspend(void)
  14 {
  15         return 0;
  16 }
  17
  18 /*
  19  * Image of the saved processor state, used by the low level ACPI suspend to
  20  * RAM code and by the low level hibernation code.
  21  *
  22  * If you modify it, fix arch/x86/kernel/acpi/wakeup_64.S and make sure that
  23  * __save/__restore_processor_state(), defined in arch/x86/kernel/suspend_64.c,
  24  * still work as required.
  25  */
  26 struct saved_context {
  27         struct pt_regs regs;
  28         u16 ds, es, fs, gs, ss;
  29         unsigned long gs_base, gs_kernel_base, fs_base;
  30         unsigned long cr0, cr2, cr3, cr4, cr8;
  31         unsigned long efer;
  32         u16 gdt_pad;
  33         u16 gdt_limit;
  34         unsigned long gdt_base;
  35         u16 idt_pad;
  36         u16 idt_limit;
  37         unsigned long idt_base;
  38         u16 ldt;
  39         u16 tss;
  40         unsigned long tr;
  41         unsigned long safety;
  42         unsigned long return_address;
  43 } __attribute__((packed));
  44
  45 #define loaddebug(thread,register) \
  46         set_debugreg((thread)->debugreg##register, register)
  47
  48 extern void fix_processor_context(void);
  49
  50 /* routines for saving/restoring kernel state */
  51 extern int acpi_save_state_mem(void);
  52 extern char core_restore_code;
  53 extern char restore_registers;
  54
  55 #endif /* __ASM_X86_64_SUSPEND_H */