include/asm-i386/suspend.h

   1 /*
   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
   9 static inline int arch_prepare_suspend(void) { return 0; }
  10
  11 /* image of the saved processor state */
  12 struct saved_context {
  13         u16 es, fs, gs, ss;
  14         unsigned long cr0, cr2, cr3, cr4;
  15         u16 gdt_pad;
  16         u16 gdt_limit;
  17         unsigned long gdt_base;
  18         u16 idt_pad;
  19         u16 idt_limit;
  20         unsigned long idt_base;
  21         u16 ldt;
  22         u16 tss;
  23         unsigned long tr;
  24         unsigned long safety;
  25         unsigned long return_address;
  26 } __attribute__((packed));
  27
  28 #ifdef CONFIG_ACPI_SLEEP
  29 extern unsigned long saved_eip;
  30 extern unsigned long saved_esp;
  31 extern unsigned long saved_ebp;
  32 extern unsigned long saved_ebx;
  33 extern unsigned long saved_esi;
  34 extern unsigned long saved_edi;
  35
  36 static inline void acpi_save_register_state(unsigned long return_point)
  37 {
  38         saved_eip = return_point;
  39         asm volatile ("movl %%esp,%0" : "=m" (saved_esp));
  40         asm volatile ("movl %%ebp,%0" : "=m" (saved_ebp));
  41         asm volatile ("movl %%ebx,%0" : "=m" (saved_ebx));
  42         asm volatile ("movl %%edi,%0" : "=m" (saved_edi));
  43         asm volatile ("movl %%esi,%0" : "=m" (saved_esi));
  44 }
  45
  46 #define acpi_restore_register_state()  do {} while (0)
  47
  48 /* routines for saving/restoring kernel state */
  49 extern int acpi_save_state_mem(void);
  50 #endif