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include
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asm-x86
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suspend_32.h

suspend_32.h 1.3 KB
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  1. /*
    2. 

  2.  * Copyright 2001-2002 Pavel Machek <pavel@suse.cz>
    3. 

  3.  * Based on code
    4. 

  4.  * Copyright 2001 Patrick Mochel <mochel@osdl.org>
    5. 

  5.  */
    6. 

  6. #ifndef ASM_X86__SUSPEND_32_H
    7. 

  7. #define ASM_X86__SUSPEND_32_H
    8. 

  8. 

  9. #include <asm/desc.h>
    10. 

  10. #include <asm/i387.h>
    11. 

  11. 

  12. static inline int arch_prepare_suspend(void) { return 0; }
    13. 

  13. 

  14. /* image of the saved processor state */
    15. 

  15. struct saved_context {
    16. 

  16. 	u16 es, fs, gs, ss;
    17. 

  17. 	unsigned long cr0, cr2, cr3, cr4;
    18. 

  18. 	struct desc_ptr gdt;
    19. 

  19. 	struct desc_ptr idt;
    20. 

  20. 	u16 ldt;
    21. 

  21. 	u16 tss;
    22. 

  22. 	unsigned long tr;
    23. 

  23. 	unsigned long safety;
    24. 

  24. 	unsigned long return_address;
    25. 

  25. } __attribute__((packed));
    26. 

  26. 

  27. #ifdef CONFIG_ACPI
    28. 

  28. extern unsigned long saved_eip;
    29. 

  29. extern unsigned long saved_esp;
    30. 

  30. extern unsigned long saved_ebp;
    31. 

  31. extern unsigned long saved_ebx;
    32. 

  32. extern unsigned long saved_esi;
    33. 

  33. extern unsigned long saved_edi;
    34. 

  34. 

  35. static inline void acpi_save_register_state(unsigned long return_point)
    36. 

  36. {
    37. 

  37. 	saved_eip = return_point;
    38. 

  38. 	asm volatile("movl %%esp,%0" : "=m" (saved_esp));
    39. 

  39. 	asm volatile("movl %%ebp,%0" : "=m" (saved_ebp));
    40. 

  40. 	asm volatile("movl %%ebx,%0" : "=m" (saved_ebx));
    41. 

  41. 	asm volatile("movl %%edi,%0" : "=m" (saved_edi));
    42. 

  42. 	asm volatile("movl %%esi,%0" : "=m" (saved_esi));
    43. 

  43. }
    44. 

  44. 

  45. #define acpi_restore_register_state()  do {} while (0)
    46. 

  46. 

  47. /* routines for saving/restoring kernel state */
    48. 

  48. extern int acpi_save_state_mem(void);
    49. 

  49. #endif
    50. 

  50. 

  51. #endif /* ASM_X86__SUSPEND_32_H */
    52.