Viewing file:  irqflags.h (2.59 KB) -rw-r--r--
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#ifndef __ASM_ARM_IRQFLAGS_H
#define __ASM_ARM_IRQFLAGS_H
#ifdef __KERNEL__
#include <asm/ptrace.h>
/*
* CPU interrupt mask handling.
*/
#if __LINUX_ARM_ARCH__ >= 6
#define raw_local_irq_save(x) \
({ \
__asm__ __volatile__( \
"mrs %0, cpsr @ local_irq_save\n" \
"cpsid i" \
: "=r" (x) : : "memory", "cc"); \
})
#define raw_local_irq_enable() __asm__("cpsie i @ __sti" : : : "memory", "cc")
#define raw_local_irq_disable() __asm__("cpsid i @ __cli" : : : "memory", "cc")
#define local_fiq_enable() __asm__("cpsie f @ __stf" : : : "memory", "cc")
#define local_fiq_disable() __asm__("cpsid f @ __clf" : : : "memory", "cc")
#else
/*
* Save the current interrupt enable state & disable IRQs
*/
#define raw_local_irq_save(x) \
({ \
unsigned long temp; \
(void) (&temp == &x); \
__asm__ __volatile__( \
"mrs %0, cpsr @ local_irq_save\n" \
" orr %1, %0, #128\n" \
" msr cpsr_c, %1" \
: "=r" (x), "=r" (temp) \
: \
: "memory", "cc"); \
})
/*
* Enable IRQs
*/
#define raw_local_irq_enable() \
({ \
unsigned long temp; \
__asm__ __volatile__( \
"mrs %0, cpsr @ local_irq_enable\n" \
" bic %0, %0, #128\n" \
" msr cpsr_c, %0" \
: "=r" (temp) \
: \
: "memory", "cc"); \
})
/*
* Disable IRQs
*/
#define raw_local_irq_disable() \
({ \
unsigned long temp; \
__asm__ __volatile__( \
"mrs %0, cpsr @ local_irq_disable\n" \
" orr %0, %0, #128\n" \
" msr cpsr_c, %0" \
: "=r" (temp) \
: \
: "memory", "cc"); \
})
/*
* Enable FIQs
*/
#define local_fiq_enable() \
({ \
unsigned long temp; \
__asm__ __volatile__( \
"mrs %0, cpsr @ stf\n" \
" bic %0, %0, #64\n" \
" msr cpsr_c, %0" \
: "=r" (temp) \
: \
: "memory", "cc"); \
})
/*
* Disable FIQs
*/
#define local_fiq_disable() \
({ \
unsigned long temp; \
__asm__ __volatile__( \
"mrs %0, cpsr @ clf\n" \
" orr %0, %0, #64\n" \
" msr cpsr_c, %0" \
: "=r" (temp) \
: \
: "memory", "cc"); \
})
#endif
/*
* Save the current interrupt enable state.
*/
#define raw_local_save_flags(x) \
({ \
__asm__ __volatile__( \
"mrs %0, cpsr @ local_save_flags" \
: "=r" (x) : : "memory", "cc"); \
})
/*
* restore saved IRQ & FIQ state
*/
#define raw_local_irq_restore(x) \
__asm__ __volatile__( \
"msr cpsr_c, %0 @ local_irq_restore\n" \
: \
: "r" (x) \
: "memory", "cc")
#define raw_irqs_disabled_flags(flags) \
({ \
(int)((flags) & PSR_I_BIT); \
})
#endif
#endif
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