예제 #1
0
파일: ctf.c 프로젝트: 2014-class/freerouter
caddr_t
ctf_gen(iiburst_t *iiburst, size_t *resszp, int do_compress)
{
	ctf_buf_t *buf = ctf_buf_new();
	ctf_header_t h;
	caddr_t outbuf;

	int i;

	/*
	 * Prepare the header, and create the CTF output buffers.  The data
	 * object section and function section are both lists of 2-byte
	 * integers; we pad these out to the next 4-byte boundary if needed.
	 */
	h.cth_magic = CTF_MAGIC;
	h.cth_version = CTF_VERSION;
	h.cth_flags = do_compress ? CTF_F_COMPRESS : 0;
	h.cth_parlabel = strtab_insert(&buf->ctb_strtab,
	    iiburst->iib_td->td_parlabel);
	h.cth_parname = strtab_insert(&buf->ctb_strtab,
	    iiburst->iib_td->td_parname);

	h.cth_lbloff = 0;
	(void) list_iter(iiburst->iib_td->td_labels, write_label,
	    buf);

	pad_buffer(buf, 2);
	h.cth_objtoff = ctf_buf_cur(buf);
	for (i = 0; i < iiburst->iib_nobjts; i++)
		write_objects(iiburst->iib_objts[i], buf);

	pad_buffer(buf, 2);
	h.cth_funcoff = ctf_buf_cur(buf);
	for (i = 0; i < iiburst->iib_nfuncs; i++)
		write_functions(iiburst->iib_funcs[i], buf);

	pad_buffer(buf, 4);
	h.cth_typeoff = ctf_buf_cur(buf);
	(void) list_iter(iiburst->iib_types, write_type, buf);

	debug(2, "CTF wrote %d types\n", list_count(iiburst->iib_types));

	h.cth_stroff = ctf_buf_cur(buf);
	h.cth_strlen = strtab_size(&buf->ctb_strtab);

	/*
	 * We only do compression for ctfmerge, as ctfconvert is only
	 * supposed to be used on intermediary build objects. This is
	 * significantly faster.
	 */
	if (do_compress)
		outbuf = write_compressed_buffer(&h, buf, resszp);
	else
		outbuf = write_buffer(&h, buf, resszp);

	ctf_buf_free(buf);
	return (outbuf);
}
예제 #2
0
파일: ctf.c 프로젝트: DataIX/src
/*
 * Pad the buffer to a power-of-2 boundary
 */
static void
pad_buffer(ctf_buf_t *buf, int align)
{
	uint_t cur = ctf_buf_cur(buf);
	ssize_t topad = (align - (cur % align)) % align;
	static const char pad[8] = { 0 };

	while (topad > 0) {
		ctf_buf_write(buf, pad, (topad > 8 ? 8 : topad));
		topad -= 8;
	}
}