mirror of
https://github.com/edk2-porting/linux-next.git
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7ad1bcb25c
This adds support for irqtrace for lockdep on ARM. Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
133 lines
2.6 KiB
C
133 lines
2.6 KiB
C
#ifndef __ASM_ARM_IRQFLAGS_H
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#define __ASM_ARM_IRQFLAGS_H
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#ifdef __KERNEL__
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#include <asm/ptrace.h>
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/*
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* CPU interrupt mask handling.
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*/
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#if __LINUX_ARM_ARCH__ >= 6
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#define raw_local_irq_save(x) \
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({ \
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__asm__ __volatile__( \
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"mrs %0, cpsr @ local_irq_save\n" \
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"cpsid i" \
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: "=r" (x) : : "memory", "cc"); \
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})
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#define raw_local_irq_enable() __asm__("cpsie i @ __sti" : : : "memory", "cc")
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#define raw_local_irq_disable() __asm__("cpsid i @ __cli" : : : "memory", "cc")
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#define local_fiq_enable() __asm__("cpsie f @ __stf" : : : "memory", "cc")
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#define local_fiq_disable() __asm__("cpsid f @ __clf" : : : "memory", "cc")
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#else
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/*
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* Save the current interrupt enable state & disable IRQs
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*/
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#define raw_local_irq_save(x) \
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({ \
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unsigned long temp; \
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(void) (&temp == &x); \
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__asm__ __volatile__( \
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"mrs %0, cpsr @ local_irq_save\n" \
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" orr %1, %0, #128\n" \
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" msr cpsr_c, %1" \
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: "=r" (x), "=r" (temp) \
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: \
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: "memory", "cc"); \
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})
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/*
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* Enable IRQs
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*/
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#define raw_local_irq_enable() \
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({ \
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unsigned long temp; \
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__asm__ __volatile__( \
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"mrs %0, cpsr @ local_irq_enable\n" \
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" bic %0, %0, #128\n" \
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" msr cpsr_c, %0" \
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: "=r" (temp) \
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: \
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: "memory", "cc"); \
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})
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/*
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* Disable IRQs
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*/
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#define raw_local_irq_disable() \
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({ \
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unsigned long temp; \
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__asm__ __volatile__( \
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"mrs %0, cpsr @ local_irq_disable\n" \
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" orr %0, %0, #128\n" \
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" msr cpsr_c, %0" \
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: "=r" (temp) \
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: \
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: "memory", "cc"); \
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})
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/*
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* Enable FIQs
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*/
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#define local_fiq_enable() \
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({ \
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unsigned long temp; \
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__asm__ __volatile__( \
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"mrs %0, cpsr @ stf\n" \
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" bic %0, %0, #64\n" \
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" msr cpsr_c, %0" \
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: "=r" (temp) \
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: \
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: "memory", "cc"); \
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})
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/*
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* Disable FIQs
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*/
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#define local_fiq_disable() \
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({ \
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unsigned long temp; \
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__asm__ __volatile__( \
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"mrs %0, cpsr @ clf\n" \
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" orr %0, %0, #64\n" \
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" msr cpsr_c, %0" \
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: "=r" (temp) \
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: \
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: "memory", "cc"); \
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})
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#endif
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/*
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* Save the current interrupt enable state.
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*/
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#define raw_local_save_flags(x) \
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({ \
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__asm__ __volatile__( \
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"mrs %0, cpsr @ local_save_flags" \
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: "=r" (x) : : "memory", "cc"); \
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})
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/*
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* restore saved IRQ & FIQ state
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*/
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#define raw_local_irq_restore(x) \
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__asm__ __volatile__( \
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"msr cpsr_c, %0 @ local_irq_restore\n" \
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: \
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: "r" (x) \
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: "memory", "cc")
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#define raw_irqs_disabled_flags(flags) \
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({ \
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(int)((flags) & PSR_I_BIT); \
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})
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#endif
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#endif
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