45 lines
802 B
C
45 lines
802 B
C
/*
|
|
* Copyright (c) 2016 Jean-Paul Etienne <fractalclone@gmail.com>
|
|
*
|
|
* SPDX-License-Identifier: Apache-2.0
|
|
*/
|
|
|
|
/**
|
|
* @file
|
|
* @brief Kernel event logger support for RISCV32
|
|
*/
|
|
|
|
#ifndef __KERNEL_TRACING_H__
|
|
#define __KERNEL_TRACING_H__
|
|
|
|
#include <arch/cpu.h>
|
|
|
|
#ifdef __cplusplus
|
|
extern "C" {
|
|
#endif
|
|
|
|
/**
|
|
* @brief Get the identification of the current interrupt.
|
|
*
|
|
* This routine obtain the key of the interrupt that is currently processed
|
|
* if it is called from an IRQ context.
|
|
*
|
|
* @return The key of the interrupt that is currently being processed.
|
|
*/
|
|
static inline int _sys_current_irq_key_get(void)
|
|
{
|
|
u32_t mcause;
|
|
|
|
__asm__ volatile("csrr %0, mcause" : "=r" (mcause));
|
|
|
|
mcause &= SOC_MCAUSE_EXP_MASK;
|
|
|
|
return mcause;
|
|
}
|
|
|
|
#ifdef __cplusplus
|
|
}
|
|
#endif
|
|
|
|
#endif /* __KERNEL_TRACING_H__ */
|