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| Rev | Author | Line No. | Line |
|---|---|---|---|
| 422 | giacomo | 1 | /* |
| 2 | * Copyright 2001-2002 Pavel Machek <pavel@suse.cz> |
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| 3 | * Based on code |
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| 4 | * Copyright 2001 Patrick Mochel <mochel@osdl.org> |
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| 5 | */ |
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| 6 | #include <asm/desc.h> |
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| 7 | #include <asm/i387.h> |
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| 8 | |||
| 9 | static inline int |
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| 10 | arch_prepare_suspend(void) |
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| 11 | { |
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| 12 | if (!cpu_has_pse) |
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| 13 | return -EPERM; |
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| 14 | return 0; |
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| 15 | } |
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| 16 | |||
| 17 | /* image of the saved processor state */ |
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| 18 | struct saved_context { |
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| 19 | u16 es, fs, gs, ss; |
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| 20 | unsigned long cr0, cr2, cr3, cr4; |
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| 21 | u16 gdt_pad; |
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| 22 | u16 gdt_limit; |
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| 23 | unsigned long gdt_base; |
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| 24 | u16 idt_pad; |
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| 25 | u16 idt_limit; |
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| 26 | unsigned long idt_base; |
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| 27 | u16 ldt; |
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| 28 | u16 tss; |
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| 29 | unsigned long tr; |
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| 30 | unsigned long safety; |
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| 31 | unsigned long return_address; |
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| 32 | } __attribute__((packed)); |
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| 33 | |||
| 34 | #define loaddebug(thread,register) \ |
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| 35 | __asm__("movl %0,%%db" #register \ |
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| 36 | : /* no output */ \ |
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| 37 | :"r" ((thread)->debugreg[register])) |
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| 38 | |||
| 39 | extern void save_processor_state(void); |
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| 40 | extern void restore_processor_state(void); |
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| 41 | |||
| 42 | #ifdef CONFIG_ACPI_SLEEP |
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| 43 | extern unsigned long saved_eip; |
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| 44 | extern unsigned long saved_esp; |
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| 45 | extern unsigned long saved_ebp; |
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| 46 | extern unsigned long saved_ebx; |
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| 47 | extern unsigned long saved_esi; |
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| 48 | extern unsigned long saved_edi; |
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| 49 | |||
| 50 | static inline void acpi_save_register_state(unsigned long return_point) |
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| 51 | { |
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| 52 | saved_eip = return_point; |
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| 53 | asm volatile ("movl %%esp,%0" : "=m" (saved_esp)); |
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| 54 | asm volatile ("movl %%ebp,%0" : "=m" (saved_ebp)); |
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| 55 | asm volatile ("movl %%ebx,%0" : "=m" (saved_ebx)); |
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| 56 | asm volatile ("movl %%edi,%0" : "=m" (saved_edi)); |
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| 57 | asm volatile ("movl %%esi,%0" : "=m" (saved_esi)); |
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| 58 | } |
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| 59 | |||
| 60 | #define acpi_restore_register_state() do {} while (0) |
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| 61 | |||
| 62 | /* routines for saving/restoring kernel state */ |
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| 63 | extern int acpi_save_state_mem(void); |
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| 64 | extern int acpi_save_state_disk(void); |
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| 65 | #endif |