/* * This program is designed to test the libDASM library. It generates * a file called 'data' with various assembly language instructions * in it. The program 'disasm' can then be used to disassemble it. */#include <stdio.h>#include <unistd.h>#include <sys/types.h>#include <sys/stat.h>#include <fcntl.h>#include <errno.h>#include <string.h>/* opcode buffer */char buf[] = {  0xE8, 0x78, 0x45, 0x23, 0x10,  0x0F, 0x20, 0xD8,  0x0F, 0x21, 0xF3,  0x0F, 0x21, 0xFC,  0x0F, 0x21, 0xD3,  0x0F, 0x23, 0xF3,  0x0F, 0x23, 0xFC,  0x0F, 0x23, 0xD3,};intmain(){  FILE *fp;  fp = fopen("data", "w");  if (!fp)  {    printf("error: %s\n", strerror(errno));    return 0;  }  fwrite(buf, 1, sizeof(buf), fp);  fclose(fp);  return 0;}