程序2

发布于 2022-10-15 06:51:25 字数 4857 浏览 27 评论 0

void
usage ()
{
fprintf (stderr, "Usage: %s -l image\n"
   "-l ==> list image header information\n",
cmdname);
fprintf (stderr, "    %s [-x] -A arch -O os -T type -C comp "
   "-a addr -e ep -n name -d data_file[:data_file...] image\n"
   "       -A ==> set architecture to 'arch'\n"
   "       -O ==> set operating system to 'os'\n"
   "       -T ==> set image type to 'type'\n"
   "       -C ==> set compression type 'comp'\n"
   "       -a ==> set load address to 'addr' (hex)\n"
   "       -e ==> set entry point to 'ep' (hex)\n"
   "       -n ==> set image name to 'name'\n"
   "       -d ==> use image data from 'datafile'\n"
   "       -x ==> set XIP (execute in place)\n",
cmdname);
fprintf (stderr, "    %s [-D dtc_options] -f fit-image.its fit-image\n",
cmdname);

exit (EXIT_FAILURE);
}

其中
fprintf (stderr, "    %s [-x] -A arch -O os -T type -C comp "
   "-a addr -e ep -n name -d data_file[:data_file...] image\n"
   "       -A ==> set architecture to 'arch'\n"
   "       -O ==> set operating system to 'os'\n"
   "       -T ==> set image type to 'type'\n"
   "       -C ==> set compression type 'comp'\n"
   "       -a ==> set load address to 'addr' (hex)\n"
   "       -e ==> set entry point to 'ep' (hex)\n"
   "       -n ==> set image name to 'name'\n"
   "       -d ==> use image data from 'datafile'\n"
   "       -x ==> set XIP (execute in place)\n",
cmdname);是什么意思啊。输出是什么啊。