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);
}
/*
* 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;
}
}
