port.h

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/****************************************************************************/
 
#ifndef PORT_H
#define PORT_H
 
#include <stdint.h>
#include <stddef.h>
 
#ifdef __cplusplus
extern "C" {
#endif
 
static inline uint32_t port_get_primask(void)
{
    uint32_t primask;
    __asm volatile("MRS %0, PRIMASK" : "=r"(primask) :: "memory");
    return primask;
}
 
static inline void port_set_primask(uint32_t primask)
{
    __asm volatile("MSR PRIMASK, %0" :: "r"(primask) : "memory");
}

void akos_port_systick_init_freq(uint32_t cpu_freq);

void akos_port_start_first_task(void);

uint32_t *akos_port_task_stack_init(uint32_t *p_stack,
                               size_t stack_size,
                               void (*pf_task)(void *),
                               void *p_arg);
 
#define port_disable_interrupts             { __asm volatile("CPSID I" ::: "memory"); }
#define port_enable_interrupts              { __asm volatile("CPSIE I" ::: "memory"); }
 
/* Make PendSV and SysTick the lowest priority interrupts. */
#define port_setup_PendSV()                 (*(uint32_t volatile *)0xE000ED20 |= (0xFFU << 16))
#define port_trigger_PendSV()               (*(uint32_t volatile *)0xE000ED04 = (1U << 28))
 
#define port_SVCHandler                     SVC_Handler
#define port_PendSVHandler                  PendSV_Handler
#define port_SysTickHandler                 SysTick_Handler
 
#ifdef __cplusplus
}
#endif
 
#endif