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         struct Xgt_desc_struct gdt;
  16         struct Xgt_desc_struct idt;
  17         u16 ldt;
  18         u16 tss;
  19         unsigned long tr;
  20         unsigned long safety;
  21         unsigned long return_address;
  22 } __attribute__((packed));
  23
  24 #ifdef CONFIG_ACPI_SLEEP
  25 extern unsigned long saved_eip;
  26 extern unsigned long saved_esp;
  27 extern unsigned long saved_ebp;
  28 extern unsigned long saved_ebx;
  29 extern unsigned long saved_esi;
  30 extern unsigned long saved_edi;
  31
  32 static inline void acpi_save_register_state(unsigned long return_point)
  33 {
  34         saved_eip = return_point;
  35         asm volatile ("movl %%esp,%0" : "=m" (saved_esp));
  36         asm volatile ("movl %%ebp,%0" : "=m" (saved_ebp));
  37         asm volatile ("movl %%ebx,%0" : "=m" (saved_ebx));
  38         asm volatile ("movl %%edi,%0" : "=m" (saved_edi));
  39         asm volatile ("movl %%esi,%0" : "=m" (saved_esi));
  40 }
  41
  42 #define acpi_restore_register_state()  do {} while (0)
  43
  44 /* routines for saving/restoring kernel state */
  45 extern int acpi_save_state_mem(void);
  46 #endif