mirror of
https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git
synced 2024-10-29 23:53:32 +00:00
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>
58 lines
1.7 KiB
C
58 lines
1.7 KiB
C
/*
|
|
* Copyright 2001-2003 Pavel Machek <pavel@suse.cz>
|
|
* Based on code
|
|
* Copyright 2001 Patrick Mochel <mochel@osdl.org>
|
|
*/
|
|
#include <asm/desc.h>
|
|
#include <asm/i387.h>
|
|
|
|
static inline int
|
|
arch_prepare_suspend(void)
|
|
{
|
|
return 0;
|
|
}
|
|
|
|
/* Image of the saved processor state. If you touch this, fix acpi_wakeup.S. */
|
|
struct saved_context {
|
|
u16 ds, es, fs, gs, ss;
|
|
unsigned long gs_base, gs_kernel_base, fs_base;
|
|
unsigned long cr0, cr2, cr3, cr4, cr8;
|
|
u16 gdt_pad;
|
|
u16 gdt_limit;
|
|
unsigned long gdt_base;
|
|
u16 idt_pad;
|
|
u16 idt_limit;
|
|
unsigned long idt_base;
|
|
u16 ldt;
|
|
u16 tss;
|
|
unsigned long tr;
|
|
unsigned long safety;
|
|
unsigned long return_address;
|
|
unsigned long eflags;
|
|
} __attribute__((packed));
|
|
|
|
/* We'll access these from assembly, so we'd better have them outside struct */
|
|
extern unsigned long saved_context_eax, saved_context_ebx, saved_context_ecx, saved_context_edx;
|
|
extern unsigned long saved_context_esp, saved_context_ebp, saved_context_esi, saved_context_edi;
|
|
extern unsigned long saved_context_r08, saved_context_r09, saved_context_r10, saved_context_r11;
|
|
extern unsigned long saved_context_r12, saved_context_r13, saved_context_r14, saved_context_r15;
|
|
extern unsigned long saved_context_eflags;
|
|
|
|
#define loaddebug(thread,register) \
|
|
__asm__("movq %0,%%db" #register \
|
|
: /* no output */ \
|
|
:"r" ((thread)->debugreg##register))
|
|
|
|
extern void fix_processor_context(void);
|
|
|
|
#ifdef CONFIG_ACPI_SLEEP
|
|
extern unsigned long saved_eip;
|
|
extern unsigned long saved_esp;
|
|
extern unsigned long saved_ebp;
|
|
extern unsigned long saved_ebx;
|
|
extern unsigned long saved_esi;
|
|
extern unsigned long saved_edi;
|
|
|
|
/* routines for saving/restoring kernel state */
|
|
extern int acpi_save_state_mem(void);
|
|
#endif
|