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/*******************************************************************************
* Copyright 2019-2021 Microchip FPGA Embedded Systems Solutions.
*
* SPDX-License-Identifier: MIT
*
* MPFS HAL Embedded Software
*
*/
/***************************************************************************
* @file mss_util.h
* @author Microchip-FPGA Embedded Systems Solutions
* @brief MACROs defines and prototypes associated with utility functions
*
*/
#ifndef MSS_UTIL_H
#define MSS_UTIL_H
#include <stdint.h>
#include <stdbool.h>
#include "encoding.h"
#include "mss_hart_ints.h"
#ifdef __cplusplus
extern "C" {
#endif
/*
* Useful macros
*/
#define WRITE_REG8(x, y) (*((volatile uint8_t *)(x)) = (y))
#define READ_REG8(x) (*((volatile uint8_t *)(x)))
#define WRITE_REG32(x, y) (*((volatile uint32_t *)(x)) = (y))
#define READ_REG32(x) (*((volatile uint32_t *)(x)))
#define WRITE_REG64(x, y) (*((volatile uint64_t *)(x)) = (y))
#define READ_REG64(x) (*((volatile uint64_t *)(x)))
/*
* return mcycle
*/
uint64_t readmcycle(void);
void sleep_ms(uint64_t msecs);
void sleep_cycles(uint64_t ncycles);
uint64_t get_stack_pointer(void);
uint64_t get_tp_reg(void);
uint64_t get_program_counter(void) __attribute__((aligned(16)));
#ifdef MPFS_PRINTF_DEBUG_SUPPORTED
void display_address_of_interest(uint64_t * address_of_interest, int nb_locations);
#endif
void exit_simulation(void);
void enable_interrupts(void);
uint64_t disable_interrupts(void);
void restore_interrupts(uint64_t saved_psr);
void __disable_irq(void);
void __disable_all_irqs(void);
void __enable_irq(void);
void __enable_local_irq(uint8_t local_interrupt);
void __disable_local_irq(uint8_t local_interrupt);
bool mpfs_sync_bool_compare_and_swap(volatile long *ptr, long oldval, long newval);
long mpfs_sync_val_compare_and_swap(volatile long *ptr, long oldval, long newval);
static inline void spinunlock(volatile long *lock)
{
*lock = 0;
}
static inline void spinlock(volatile long *lock)
{
while(!mpfs_sync_bool_compare_and_swap(lock, 0, 1))
{
/* add yield if OS */
}
*lock = 1;
}
#ifdef __cplusplus
}
#endif
#endif /* MSS_UTIL_H */
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