include/asm-x86/suspend_32.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 #ifndef __ASM_X86_32_SUSPEND_H
   7 #define __ASM_X86_32_SUSPEND_H
   8
   9 #include <asm/desc.h>
  10 #include <asm/i387.h>
  11
  12 static inline int arch_prepare_suspend(void) { return 0; }
  13
  14 /* image of the saved processor state */
  15 struct saved_context {
  16         u16 es, fs, gs, ss;
  17         unsigned long cr0, cr2, cr3, cr4;
  18         struct desc_ptr gdt;
  19         struct desc_ptr idt;
  20         u16 ldt;
  21         u16 tss;
  22         unsigned long tr;
  23         unsigned long safety;
  24         unsigned long return_address;
  25 } __attribute__((packed));
  26
  27 #ifdef CONFIG_ACPI
  28 extern unsigned long saved_eip;
  29 extern unsigned long saved_esp;
  30 extern unsigned long saved_ebp;
  31 extern unsigned long saved_ebx;
  32 extern unsigned long saved_esi;
  33 extern unsigned long saved_edi;
  34
  35 static inline void acpi_save_register_state(unsigned long return_point)
  36 {
  37         saved_eip = return_point;
  38         asm volatile("movl %%esp,%0" : "=m" (saved_esp));
  39         asm volatile("movl %%ebp,%0" : "=m" (saved_ebp));
  40         asm volatile("movl %%ebx,%0" : "=m" (saved_ebx));
  41         asm volatile("movl %%edi,%0" : "=m" (saved_edi));
  42         asm volatile("movl %%esi,%0" : "=m" (saved_esi));
  43 }
  44
  45 #define acpi_restore_register_state()  do {} while (0)
  46
  47 /* routines for saving/restoring kernel state */
  48 extern int acpi_save_state_mem(void);
  49 #endif
  50
  51 #endif /* __ASM_X86_32_SUSPEND_H */