LXR linux/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
   9static inline int arch_prepare_suspend(void) { return 0; }
  10
  11/* image of the saved processor state */
  12struct 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
  25extern unsigned long saved_eip;
  26extern unsigned long saved_esp;
  27extern unsigned long saved_ebp;
  28extern unsigned long saved_ebx;
  29extern unsigned long saved_esi;
  30extern unsigned long saved_edi;
  31
  32static 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 */
  45extern int acpi_save_state_mem(void);
  46#endif
  47