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x86: Save registers in saved_context during suspend and hibernation

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During hibernation and suspend on x86_64 save CPU registers in the saved_context
structure rather than in a handful of separate variables.

Signed-off-by: Rafael J. Wysocki <rjw@sisk.pl>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
This commit is contained in:
Rafael J. Wysocki 2007-10-23 22:37:24 +02:00 • committed by Thomas Gleixner
commit 0de80bcc2b
5 changed files with 125 additions and 105 deletions
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23
include/asm-x86/suspend_64.h
View file

@ -3,6 +3,9 @@
* Based on code
* Copyright 2001 Patrick Mochel <mochel@osdl.org>
*/
#ifndef __ASM_X86_64_SUSPEND_H
#define __ASM_X86_64_SUSPEND_H
#include <asm/desc.h>
#include <asm/i387.h>
@ -12,8 +15,9 @@ arch_prepare_suspend(void)
return 0;
}
/* Image of the saved processor state. If you touch this, fix acpi_wakeup.S. */
/* Image of the saved processor state. If you touch this, fix acpi/wakeup.S. */
struct saved_context {
struct pt_regs regs;
u16 ds, es, fs, gs, ss;
unsigned long gs_base, gs_kernel_base, fs_base;
unsigned long cr0, cr2, cr3, cr4, cr8;
@ -29,29 +33,16 @@ struct saved_context {
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) \
set_debugreg((thread)->debugreg##register, register)
extern void fix_processor_context(void);
extern unsigned long saved_rip;
extern unsigned long saved_rsp;
extern unsigned long saved_rbp;
extern unsigned long saved_rbx;
extern unsigned long saved_rsi;
extern unsigned long saved_rdi;
/* routines for saving/restoring kernel state */
extern int acpi_save_state_mem(void);
extern char core_restore_code;
extern char restore_registers;
#endif /* __ASM_X86_64_SUSPEND_H */