b3a12553f8
Signed-off-by: Jaroslaw Pelczar <jarek@jpelczar.com> Change-Id: I05e41f8cd28834e4bcc9f02b4694a640f460cd17 Reviewed-on: https://review.haiku-os.org/c/haiku/+/1856 Reviewed-by: waddlesplash <waddlesplash@gmail.com>
64 lines
1.3 KiB
C
64 lines
1.3 KiB
C
/*
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* Copyright 2018, Jaroslaw Pelczar <jarek@jpelczar.com>
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* Distributed under the terms of the MIT License.
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*/
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#ifndef _KERNEL_ARCH_ARM64_ARCH_INT_H_
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#define _KERNEL_ARCH_ARM64_ARCH_INT_H_
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#include <SupportDefs.h>
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#include <kernel/arch/arm64/arm_registers.h>
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#define NUM_IO_VECTORS 1024
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static inline void
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arch_int_enable_interrupts_inline(void)
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{
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__asm__ __volatile__("msr daifclr, #2");
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}
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static inline int
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arch_int_disable_interrupts_inline(void)
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{
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uint32 flags;
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__asm__ __volatile__(
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"mrs %0, daif\n\t"
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"msr daifset, #2\n\t"
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: "=&r"(flags));
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return flags;
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}
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static inline void
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arch_int_restore_interrupts_inline(int oldState)
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{
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WRITE_SPECIALREG(daif, oldState);
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}
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static inline bool
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arch_int_are_interrupts_enabled_inline(void)
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{
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uint32 flags;
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__asm__ __volatile__(
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"mrs %0, daif\n\t"
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: "=&r"(flags));
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return (flags & PSR_I) == 0;
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}
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// map the functions to the inline versions
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#define arch_int_enable_interrupts() arch_int_enable_interrupts_inline()
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#define arch_int_disable_interrupts() arch_int_disable_interrupts_inline()
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#define arch_int_restore_interrupts(status) \
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arch_int_restore_interrupts_inline(status)
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#define arch_int_are_interrupts_enabled() \
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arch_int_are_interrupts_enabled_inline()
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#endif /* _KERNEL_ARCH_ARM64_ARCH_INT_H_ */
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