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/*
* CDDL HEADER START
*
* The contents of this file are subject to the terms of the
* Common Development and Distribution License (the "License").
* You may not use this file except in compliance with the License.
*
* You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE
* or http://www.opensolaris.org/os/licensing.
* See the License for the specific language governing permissions
* and limitations under the License.
*
* When distributing Covered Code, include this CDDL HEADER in each
* file and include the License file at usr/src/OPENSOLARIS.LICENSE.
* If applicable, add the following below this CDDL HEADER, with the
* fields enclosed by brackets "[]" replaced with your own identifying
* information: Portions Copyright [yyyy] [name of copyright owner]
*
* CDDL HEADER END
*/
/*
* Copyright 2006 Sun Microsystems, Inc. All rights reserved.
* Use is subject to license terms.
*/
#pragma ident "%Z%%M% %I% %E% SMI"
/*
* Routines used to traverse tdesc trees, invoking user-supplied callbacks
* as the tree is traversed.
*/
#include "libctf/ctf_impl.h"
#include "ctftools.h"
#include "traverse.h"
#include "common/memory.h"
int (*tddescenders[])(tdesc_t *, tdtrav_data_t *);
tdtrav_cb_f tdnops[];
void
tdtrav_init(tdtrav_data_t *tdtd, int *vgenp, tdtrav_cb_f *firstops,
tdtrav_cb_f *preops, tdtrav_cb_f *postops, void *private)
{
tdtd->vgen = ++(*vgenp);
tdtd->firstops = firstops ? firstops : tdnops;
tdtd->preops = preops ? preops : tdnops;
tdtd->postops = postops ? postops : tdnops;
tdtd->private = private;
}
static int
tdtrav_plain(tdesc_t *this, tdtrav_data_t *tdtd)
{
return (tdtraverse(this->t_tdesc, &this->t_tdesc, tdtd));
}
static int
tdtrav_func(tdesc_t *this, tdtrav_data_t *tdtd)
{
fndef_t *fn = this->t_fndef;
int i, rc;
if ((rc = tdtraverse(fn->fn_ret, &fn->fn_ret, tdtd)) < 0)
return (rc);
for (i = 0; i < (int) fn->fn_nargs; i++) {
if ((rc = tdtraverse(fn->fn_args[i], &fn->fn_args[i],
tdtd)) < 0)
return (rc);
}
return (0);
}
static int
tdtrav_array(tdesc_t *this, tdtrav_data_t *tdtd)
{
ardef_t *ardef = this->t_ardef;
int rc;
if ((rc = tdtraverse(ardef->ad_contents, &ardef->ad_contents,
tdtd)) < 0)
return (rc);
return (tdtraverse(ardef->ad_idxtype, &ardef->ad_idxtype, tdtd));
}
static int
tdtrav_su(tdesc_t *this, tdtrav_data_t *tdtd)
{
mlist_t *ml;
int rc = 0;
for (ml = this->t_members; ml; ml = ml->ml_next) {
if ((rc = tdtraverse(ml->ml_type, &ml->ml_type, tdtd)) < 0)
return (rc);
}
return (rc);
}
/*ARGSUSED*/
int
tdtrav_assert(tdesc_t *node __unused, tdesc_t **nodep __unused, void *private __unused)
{
assert(1 == 0);
return (-1);
}
tdtrav_cb_f tdnops[] = {
NULL,
NULL, /* intrinsic */
NULL, /* pointer */
NULL, /* array */
NULL, /* function */
NULL, /* struct */
NULL, /* union */
NULL, /* enum */
NULL, /* forward */
NULL, /* typedef */
NULL, /* typedef_unres */
NULL, /* volatile */
NULL, /* const */
NULL /* restrict */
};
int (*tddescenders[])(tdesc_t *, tdtrav_data_t *) = {
NULL,
NULL, /* intrinsic */
tdtrav_plain, /* pointer */
tdtrav_array, /* array */
tdtrav_func, /* function */
tdtrav_su, /* struct */
tdtrav_su, /* union */
NULL, /* enum */
NULL, /* forward */
tdtrav_plain, /* typedef */
NULL, /* typedef_unres */
tdtrav_plain, /* volatile */
tdtrav_plain, /* const */
tdtrav_plain /* restrict */
};
int
tdtraverse(tdesc_t *this, tdesc_t **thisp, tdtrav_data_t *tdtd)
{
tdtrav_cb_f travcb;
int (*descender)(tdesc_t *, tdtrav_data_t *);
int descend = 1;
int rc;
if ((travcb = tdtd->firstops[this->t_type]) != NULL) {
if ((rc = travcb(this, thisp, tdtd->private)) < 0)
return (rc);
else if (rc == 0)
descend = 0;
}
if (this->t_vgen == tdtd->vgen)
return (1);
this->t_vgen = tdtd->vgen;
if (descend && (travcb = tdtd->preops[this->t_type]) != NULL) {
if ((rc = travcb(this, thisp, tdtd->private)) < 0)
return (rc);
else if (rc == 0)
descend = 0;
}
if (descend) {
if ((descender = tddescenders[this->t_type]) != NULL &&
(rc = descender(this, tdtd)) < 0)
return (rc);
if ((travcb = tdtd->postops[this->t_type]) != NULL &&
(rc = travcb(this, thisp, tdtd->private)) < 0)
return (rc);
}
return (1);
}
int
iitraverse_td(void *arg1, void *arg2)
{
iidesc_t *ii = arg1;
tdtrav_data_t *tdtd = arg2;
int i, rc;
if ((rc = tdtraverse(ii->ii_dtype, &ii->ii_dtype, tdtd)) < 0)
return (rc);
for (i = 0; i < ii->ii_nargs; i++) {
if ((rc = tdtraverse(ii->ii_args[i], &ii->ii_args[i],
tdtd)) < 0)
return (rc);
}
return (1);
}
int
iitraverse(iidesc_t *ii, int *vgenp, tdtrav_cb_f *firstops, tdtrav_cb_f *preops,
tdtrav_cb_f *postops, void *private)
{
tdtrav_data_t tdtd;
tdtrav_init(&tdtd, vgenp, firstops, preops, postops, private);
return (iitraverse_td(ii, &tdtd));
}
int
iitraverse_hash(hash_t *iihash, int *vgenp, tdtrav_cb_f *firstops,
tdtrav_cb_f *preops, tdtrav_cb_f *postops, void *private)
{
tdtrav_data_t tdtd;
tdtrav_init(&tdtd, vgenp, firstops, preops, postops, private);
return (hash_iter(iihash, iitraverse_td, &tdtd));
}
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