2 * include/asm-i386/irqflags.h
6 * This file gets included from lowlevel asm headers too, to provide
7 * wrapped versions of the local_irq_*() APIs, based on the
8 * raw_local_irq_*() macros from the lowlevel headers.
10 #ifndef _ASM_IRQFLAGS_H
11 #define _ASM_IRQFLAGS_H
13 #define raw_local_save_flags(x) do { typecheck(unsigned long,x); __asm__ __volatile__("pushfl ; popl %0":"=g" (x): /* no input */); } while (0)
14 #define raw_local_irq_restore(x) do { typecheck(unsigned long,x); __asm__ __volatile__("pushl %0 ; popfl": /* no output */ :"g" (x):"memory", "cc"); } while (0)
15 #define raw_local_irq_disable() __asm__ __volatile__("cli": : :"memory")
16 #define raw_local_irq_enable() __asm__ __volatile__("sti": : :"memory")
17 /* used in the idle loop; sti takes one instruction cycle to complete */
18 #define raw_safe_halt() __asm__ __volatile__("sti; hlt": : :"memory")
19 /* used when interrupts are already enabled or to shutdown the processor */
20 #define halt() __asm__ __volatile__("hlt": : :"memory")
22 #define raw_irqs_disabled_flags(flags) (!((flags) & (1<<9)))
24 /* For spinlocks etc */
25 #define raw_local_irq_save(x) __asm__ __volatile__("pushfl ; popl %0 ; cli":"=g" (x): /* no input */ :"memory")
28 * Do the CPU's IRQ-state tracing from assembly code. We call a
29 * C function, so save all the C-clobbered registers:
31 #ifdef CONFIG_TRACE_IRQFLAGS
33 # define TRACE_IRQS_ON \
37 call trace_hardirqs_on; \
42 # define TRACE_IRQS_OFF \
46 call trace_hardirqs_off; \
52 # define TRACE_IRQS_ON
53 # define TRACE_IRQS_OFF