#include <stdlib.h>
#include <stdio.h>
#include <fcntl.h>
#include <unistd.h>

#include "common.h"

/* Read specified number of bytes in active blkdev at active offset.
*/

int main(int argc, char **argv)
{
   if (argc != 3) {
       fprintf(stderr, "Usage: ./memdump device bytecount\n");
       return 1;
   }
   unsigned int bytecount = strtol(argv[2], NULL, 16);
   if (!bytecount) {
       // nothing to spit
       return 0;
   }

   int fd = open(argv[1], O_RDWR|O_NOCTTY);
   char s[0x30];
   sendcmdp(fd, "i=0");
   sprintf(s, "while i<0x%04x getb:puth a:i=i+1", bytecount);
   sendcmd(fd, s);

   for (int i=0; i<bytecount; i++) {
       read(fd, s, 2); // read hex pair
       s[2] = 0; // null terminate
       unsigned char c = strtol(s, NULL, 16);
       putchar(c);
   }
   read(fd, s, 2); // read prompt
   return 0;
}