#include <stdint.h>
#include <stddef.h>

extern void main(void);

extern uint8_t _bss_start[];
extern uint8_t _bss_end[];

void bss_clear(void) {
  uint8_t *p = _bss_start;
  while (p != _bss_end) {
    *p = 0;
    p++;
  }
}

// ulib initialization goes here
void _premain(void) {
  bss_clear();
  main();
}