more debugging, and serial port

[rpikern] / src / libc / string.c

#include "string.h"

void *memset(void *ptr, int val, int size)
{
        unsigned char *p = ptr;
        while(size--) {
                *p++ = val;
        }
        return ptr;
}

void *memcpy(void *dest, void *src, int size)
{
        unsigned char *d = dest;
        unsigned char *s = src;
        while(size--) {
                *d++ = *s++;
        }
        return dest;
}