Subversion Repositories an-fpga-implementation-of-low-latency-noc-based-mpsoc

#ifndef  LM32_SYS_C

        #define LM32_SYS_C

/***************************************************************************

 * IRQ handling

 */

/****************************************************************************

 * Types

 */

#include <stdint.h>

/****************************************************************************/

isr_ptr_t isr_table[32];

void isr_null()

{

}

void irq_handler(uint32_t pending)

{

        int i;

        for(i=0; i<32; i++) {

                if (pending & 0x01) (*isr_table[i])();

                pending >>= 1;

        }

}

void isr_init()

{

        int i;

        for(i=0; i<32; i++)

                isr_table[i] = &isr_null;

}

void isr_register(int irq, isr_ptr_t isr)

{

        isr_table[irq] = isr;

}

void isr_unregister(int irq)

{

        isr_table[irq] = &isr_null;

}

/******************

*       General inttrupt functions for all CPUs added to ProNoC

*******************/

int general_int_add(unsigned long irq, isr_ptr_t handler, void *arg)

{

        isr_register(irq, handler);

        return 0;

}

void general_int_enable(unsigned long irq){

        irq_set_mask( (0x00000001L << irq)| irq_get_mask() );

}

extern char _erodata, _fdata,_edata;

void __main (void){ //initial_global_data

        char *src = &_erodata;  //start of Data section in Rom

        char *dst = &_fdata;

        /* ROM has data at end of rodata; copy it. */

        while (dst < &_edata) {

        *dst++ = *src++;

        }

        main(); //call the main function now

}

#endif