diff options
Diffstat (limited to 'include/asm-x86/irqflags.h')
| -rw-r--r-- | include/asm-x86/irqflags.h | 211 |
1 files changed, 0 insertions, 211 deletions
diff --git a/include/asm-x86/irqflags.h b/include/asm-x86/irqflags.h deleted file mode 100644 index 2bdab21f089..00000000000 --- a/include/asm-x86/irqflags.h +++ /dev/null @@ -1,211 +0,0 @@ -#ifndef _X86_IRQFLAGS_H_ -#define _X86_IRQFLAGS_H_ - -#include <asm/processor-flags.h> - -#ifndef __ASSEMBLY__ -/* - * Interrupt control: - */ - -static inline unsigned long native_save_fl(void) -{ - unsigned long flags; - - asm volatile("# __raw_save_flags\n\t" - "pushf ; pop %0" - : "=g" (flags) - : /* no input */ - : "memory"); - - return flags; -} - -static inline void native_restore_fl(unsigned long flags) -{ - asm volatile("push %0 ; popf" - : /* no output */ - :"g" (flags) - :"memory", "cc"); -} - -static inline void native_irq_disable(void) -{ - asm volatile("cli": : :"memory"); -} - -static inline void native_irq_enable(void) -{ - asm volatile("sti": : :"memory"); -} - -static inline void native_safe_halt(void) -{ - asm volatile("sti; hlt": : :"memory"); -} - -static inline void native_halt(void) -{ - asm volatile("hlt": : :"memory"); -} - -#endif - -#ifdef CONFIG_PARAVIRT -#include <asm/paravirt.h> -#else -#ifndef __ASSEMBLY__ - -static inline unsigned long __raw_local_save_flags(void) -{ - return native_save_fl(); -} - -static inline void raw_local_irq_restore(unsigned long flags) -{ - native_restore_fl(flags); -} - -static inline void raw_local_irq_disable(void) -{ - native_irq_disable(); -} - -static inline void raw_local_irq_enable(void) -{ - native_irq_enable(); -} - -/* - * Used in the idle loop; sti takes one instruction cycle - * to complete: - */ -static inline void raw_safe_halt(void) -{ - native_safe_halt(); -} - -/* - * Used when interrupts are already enabled or to - * shutdown the processor: - */ -static inline void halt(void) -{ - native_halt(); -} - -/* - * For spinlocks, etc: - */ -static inline unsigned long __raw_local_irq_save(void) -{ - unsigned long flags = __raw_local_save_flags(); - - raw_local_irq_disable(); - - return flags; -} -#else - -#define ENABLE_INTERRUPTS(x) sti -#define DISABLE_INTERRUPTS(x) cli - -#ifdef CONFIG_X86_64 -#define SWAPGS swapgs -/* - * Currently paravirt can't handle swapgs nicely when we - * don't have a stack we can rely on (such as a user space - * stack). So we either find a way around these or just fault - * and emulate if a guest tries to call swapgs directly. - * - * Either way, this is a good way to document that we don't - * have a reliable stack. x86_64 only. - */ -#define SWAPGS_UNSAFE_STACK swapgs - -#define PARAVIRT_ADJUST_EXCEPTION_FRAME /* */ - -#define INTERRUPT_RETURN iretq -#define USERGS_SYSRET64 \ - swapgs; \ - sysretq; -#define USERGS_SYSRET32 \ - swapgs; \ - sysretl -#define ENABLE_INTERRUPTS_SYSEXIT32 \ - swapgs; \ - sti; \ - sysexit - -#else -#define INTERRUPT_RETURN iret -#define ENABLE_INTERRUPTS_SYSEXIT sti; sysexit -#define GET_CR0_INTO_EAX movl %cr0, %eax -#endif - - -#endif /* __ASSEMBLY__ */ -#endif /* CONFIG_PARAVIRT */ - -#ifndef __ASSEMBLY__ -#define raw_local_save_flags(flags) \ - do { (flags) = __raw_local_save_flags(); } while (0) - -#define raw_local_irq_save(flags) \ - do { (flags) = __raw_local_irq_save(); } while (0) - -static inline int raw_irqs_disabled_flags(unsigned long flags) -{ - return !(flags & X86_EFLAGS_IF); -} - -static inline int raw_irqs_disabled(void) -{ - unsigned long flags = __raw_local_save_flags(); - - return raw_irqs_disabled_flags(flags); -} - -#else - -#ifdef CONFIG_X86_64 -#define ARCH_LOCKDEP_SYS_EXIT call lockdep_sys_exit_thunk -#define ARCH_LOCKDEP_SYS_EXIT_IRQ \ - TRACE_IRQS_ON; \ - sti; \ - SAVE_REST; \ - LOCKDEP_SYS_EXIT; \ - RESTORE_REST; \ - cli; \ - TRACE_IRQS_OFF; - -#else -#define ARCH_LOCKDEP_SYS_EXIT \ - pushl %eax; \ - pushl %ecx; \ - pushl %edx; \ - call lockdep_sys_exit; \ - popl %edx; \ - popl %ecx; \ - popl %eax; - -#define ARCH_LOCKDEP_SYS_EXIT_IRQ -#endif - -#ifdef CONFIG_TRACE_IRQFLAGS -# define TRACE_IRQS_ON call trace_hardirqs_on_thunk; -# define TRACE_IRQS_OFF call trace_hardirqs_off_thunk; -#else -# define TRACE_IRQS_ON -# define TRACE_IRQS_OFF -#endif -#ifdef CONFIG_DEBUG_LOCK_ALLOC -# define LOCKDEP_SYS_EXIT ARCH_LOCKDEP_SYS_EXIT -# define LOCKDEP_SYS_EXIT_IRQ ARCH_LOCKDEP_SYS_EXIT_IRQ -# else -# define LOCKDEP_SYS_EXIT -# define LOCKDEP_SYS_EXIT_IRQ -# endif - -#endif /* __ASSEMBLY__ */ -#endif |