133 строки
2.6 KiB
C
133 строки
2.6 KiB
C
|
#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
|