81 lines
1.5 KiB
C
81 lines
1.5 KiB
C
/*
|
|
* Copyright (c) 2019 Carlo Caione <ccaione@baylibre.com>
|
|
*
|
|
* SPDX-License-Identifier: Apache-2.0
|
|
*/
|
|
|
|
/* Either public functions or macros or invoked by public functions */
|
|
|
|
#ifndef ZEPHYR_INCLUDE_ARCH_ARM_AARCH64_ASM_INLINE_GCC_H_
|
|
#define ZEPHYR_INCLUDE_ARCH_ARM_AARCH64_ASM_INLINE_GCC_H_
|
|
|
|
/*
|
|
* The file must not be included directly
|
|
* Include arch/cpu.h instead
|
|
*/
|
|
|
|
#ifndef _ASMLANGUAGE
|
|
|
|
#include <arch/arm/aarch64/cpu.h>
|
|
#include <zephyr/types.h>
|
|
|
|
#ifdef __cplusplus
|
|
extern "C" {
|
|
#endif
|
|
|
|
static ALWAYS_INLINE void __DSB(void)
|
|
{
|
|
__asm__ volatile ("dsb sy" : : : "memory");
|
|
}
|
|
|
|
static ALWAYS_INLINE void __DMB(void)
|
|
{
|
|
__asm__ volatile ("dmb sy" : : : "memory");
|
|
}
|
|
|
|
static ALWAYS_INLINE void __ISB(void)
|
|
{
|
|
__asm__ volatile ("isb" : : : "memory");
|
|
}
|
|
|
|
static ALWAYS_INLINE unsigned int arch_irq_lock(void)
|
|
{
|
|
unsigned int key;
|
|
|
|
/*
|
|
* Return the whole DAIF register as key but use DAIFSET to disable
|
|
* IRQs.
|
|
*/
|
|
__asm__ volatile("mrs %0, daif;"
|
|
"msr daifset, %1;"
|
|
"isb"
|
|
: "=r" (key)
|
|
: "i" (DAIFSET_IRQ)
|
|
: "memory", "cc");
|
|
|
|
return key;
|
|
}
|
|
|
|
static ALWAYS_INLINE void arch_irq_unlock(unsigned int key)
|
|
{
|
|
__asm__ volatile("msr daif, %0;"
|
|
"isb"
|
|
:
|
|
: "r" (key)
|
|
: "memory", "cc");
|
|
}
|
|
|
|
static ALWAYS_INLINE bool arch_irq_unlocked(unsigned int key)
|
|
{
|
|
/* We only check the (I)RQ bit on the DAIF register */
|
|
return (key & DAIF_IRQ) == 0;
|
|
}
|
|
|
|
#ifdef __cplusplus
|
|
}
|
|
#endif
|
|
|
|
#endif /* _ASMLANGUAGE */
|
|
|
|
#endif /* ZEPHYR_INCLUDE_ARCH_ARM_AARCH64_ASM_INLINE_GCC_H_ */
|