Subversion Repositories openrisc_2011-10-31

/* Support */

#include "spr_defs.h"

#include "support.h"

#include "int.h"

void int_main();

void ext_except(void) {

        int_main();

}

/* Start function, called by reset exception handler.  */

static char *main_argv[2] = {"NULL", " "};

void _main(void) {

        int i = main(2, main_argv);

        or32_exit (i);

}

/* return value by making a syscall */

void or32_exit(int i) {

        asm("l.add r3,r0,%0": : "r" (i));

        asm("l.nop %0": :"K" (NOP_EXIT));

        while (1);

}

/* print long */

void report(unsigned long value) {

        asm("l.addi\tr3,%0,0": :"r" (value));

        asm("l.nop %0": :"K" (NOP_REPORT));

}

/* For writing into SPR. */

void mtspr(unsigned long spr, unsigned long value) {

        asm("l.mtspr\t\t%0,%1,0": : "r" (spr), "r" (value));

}

/* For reading SPR. */

unsigned long mfspr(unsigned long spr) {

        unsigned long value;

        asm("l.mfspr\t\t%0,%1,0" : "=r" (value) : "r" (spr));

        return value;

}