8d783b3e02
This patch fixes register saving so that each register is only saved once, and adds missing saving of %cr8 on x86-64. Some reordering so that save/restore is more logical/safer (segment registers should be restored after gdt). Signed-off-by: Pavel Machek <pavel@suse.cz> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
59 lines
1.7 KiB
C
59 lines
1.7 KiB
C
/*
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* Copyright 2001-2003 Pavel Machek <pavel@suse.cz>
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* Based on code
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* Copyright 2001 Patrick Mochel <mochel@osdl.org>
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*/
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#include <asm/desc.h>
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#include <asm/i387.h>
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static inline int
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arch_prepare_suspend(void)
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{
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return 0;
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}
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/* Image of the saved processor state. If you touch this, fix acpi_wakeup.S. */
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struct saved_context {
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u16 ds, es, fs, gs, ss;
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unsigned long gs_base, gs_kernel_base, fs_base;
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unsigned long cr0, cr2, cr3, cr4, cr8;
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u16 gdt_pad;
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u16 gdt_limit;
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unsigned long gdt_base;
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u16 idt_pad;
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u16 idt_limit;
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unsigned long idt_base;
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u16 ldt;
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u16 tss;
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unsigned long tr;
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unsigned long safety;
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unsigned long return_address;
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unsigned long eflags;
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} __attribute__((packed));
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/* We'll access these from assembly, so we'd better have them outside struct */
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extern unsigned long saved_context_eax, saved_context_ebx, saved_context_ecx, saved_context_edx;
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extern unsigned long saved_context_esp, saved_context_ebp, saved_context_esi, saved_context_edi;
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extern unsigned long saved_context_r08, saved_context_r09, saved_context_r10, saved_context_r11;
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extern unsigned long saved_context_r12, saved_context_r13, saved_context_r14, saved_context_r15;
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extern unsigned long saved_context_eflags;
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#define loaddebug(thread,register) \
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__asm__("movq %0,%%db" #register \
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: /* no output */ \
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:"r" ((thread)->debugreg##register))
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extern void fix_processor_context(void);
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#ifdef CONFIG_ACPI_SLEEP
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extern unsigned long saved_eip;
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extern unsigned long saved_esp;
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extern unsigned long saved_ebp;
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extern unsigned long saved_ebx;
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extern unsigned long saved_esi;
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extern unsigned long saved_edi;
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/* routines for saving/restoring kernel state */
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extern int acpi_save_state_mem(void);
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#endif
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