-/*
- * dwarf.c
- *
- * Babeltrace - DWARF Information Reader
- *
- * Copyright 2015 Antoine Busque <abusque@efficios.com>
- *
- * Author: Antoine Busque <abusque@efficios.com>
- *
- * Permission is hereby granted, free of charge, to any person obtaining a copy
- * of this software and associated documentation files (the "Software"), to deal
- * in the Software without restriction, including without limitation the rights
- * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
- * copies of the Software, and to permit persons to whom the Software is
- * furnished to do so, subject to the following conditions:
- *
- * The above copyright notice and this permission notice shall be included in
- * all copies or substantial portions of the Software.
- *
- * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
- * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
- * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
- * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
- * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
- * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
- * SOFTWARE.
- */
-
-#include <glib.h>
-#include <babeltrace/dwarf.h>
-
-BT_HIDDEN
-struct bt_dwarf_cu *bt_dwarf_cu_create(Dwarf *dwarf_info)
-{
- struct bt_dwarf_cu *cu;
-
- if (!dwarf_info) {
- goto error;
- }
-
- cu = g_new0(struct bt_dwarf_cu, 1);
- if (!cu) {
- goto error;
- }
- cu->dwarf_info = dwarf_info;
- return cu;
-
-error:
- return NULL;
-}
-
-BT_HIDDEN
-void bt_dwarf_cu_destroy(struct bt_dwarf_cu *cu)
-{
- g_free(cu);
-}
-
-BT_HIDDEN
-int bt_dwarf_cu_next(struct bt_dwarf_cu *cu)
-{
- int ret;
- Dwarf_Off next_offset;
- size_t cu_header_size;
-
- if (!cu) {
- ret = -1;
- goto end;
- }
-
- ret = dwarf_nextcu(cu->dwarf_info, cu->next_offset, &next_offset,
- &cu_header_size, NULL, NULL, NULL);
- if (ret) {
- /* ret is -1 on error, 1 if no next CU. */
- goto end;
- }
-
- cu->offset = cu->next_offset;
- cu->next_offset = next_offset;
- cu->header_size = cu_header_size;
-
-end:
- return ret;
-}
-
-BT_HIDDEN
-struct bt_dwarf_die *bt_dwarf_die_create(struct bt_dwarf_cu *cu)
-{
- Dwarf_Die *dwarf_die = NULL;
- struct bt_dwarf_die *die = NULL;
-
- if (!cu) {
- goto error;
- }
-
- dwarf_die = g_new0(Dwarf_Die, 1);
- if (!dwarf_die) {
- goto error;
- }
-
- dwarf_die = dwarf_offdie(cu->dwarf_info, cu->offset + cu->header_size,
- dwarf_die);
- if (!dwarf_die) {
- goto error;
- }
-
- die = g_new0(struct bt_dwarf_die, 1);
- if (!die) {
- goto error;
- }
-
- die->cu = cu;
- die->dwarf_die = dwarf_die;
- die->depth = 0;
-
- return die;
-
-error:
- g_free(dwarf_die);
- g_free(die);
- return NULL;
-}
-
-BT_HIDDEN
-void bt_dwarf_die_destroy(struct bt_dwarf_die *die)
-{
- if (!die) {
- return;
- }
-
- g_free(die->dwarf_die);
- g_free(die);
-}
-
-BT_HIDDEN
-int bt_dwarf_die_child(struct bt_dwarf_die *die)
-{
- int ret;
- Dwarf_Die *child_die = NULL;
-
- if (!die) {
- ret = -1;
- goto error;
- }
-
- child_die = g_new0(Dwarf_Die, 1);
- if (!child_die) {
- ret = -1;
- goto error;
- }
-
- ret = dwarf_child(die->dwarf_die, child_die);
- if (ret) {
- /* ret is -1 on error, 1 if no child DIE. */
- goto error;
- }
-
- g_free(die->dwarf_die);
- die->dwarf_die = child_die;
- die->depth++;
- return 0;
-
-error:
- g_free(child_die);
- return ret;
-}
-
-BT_HIDDEN
-int bt_dwarf_die_next(struct bt_dwarf_die *die)
-{
- int ret;
- Dwarf_Die *next_die = NULL;
-
- if (!die) {
- ret = -1;
- goto error;
- }
-
- next_die = g_new0(Dwarf_Die, 1);
- if (!next_die) {
- ret = -1;
- goto error;
- }
-
- if (die->depth == 0) {
- ret = dwarf_child(die->dwarf_die, next_die);
- if (ret) {
- /* ret is -1 on error, 1 if no child DIE. */
- goto error;
- }
-
- die->depth = 1;
- } else {
- ret = dwarf_siblingof(die->dwarf_die, next_die);
- if (ret) {
- /* ret is -1 on error, 1 if we reached end of
- * DIEs at this depth. */
- goto error;
- }
- }
-
- g_free(die->dwarf_die);
- die->dwarf_die = next_die;
- return 0;
-
-error:
- g_free(next_die);
- return ret;
-}
-
-BT_HIDDEN
-int bt_dwarf_die_get_tag(struct bt_dwarf_die *die, int *tag)
-{
- int _tag;
-
- if (!die || !tag) {
- goto error;
- }
-
- _tag = dwarf_tag(die->dwarf_die);
- if (_tag == DW_TAG_invalid) {
- goto error;
- }
-
- *tag = _tag;
- return 0;
-
-error:
- return -1;
-}
-
-BT_HIDDEN
-int bt_dwarf_die_get_name(struct bt_dwarf_die *die, char **name)
-{
- const char *_name;
-
- if (!die || !name) {
- goto error;
- }
-
- _name = dwarf_diename(die->dwarf_die);
- if (!_name) {
- goto error;
- }
-
- *name = strdup(_name);
- if (!*name) {
- goto error;
- }
-
- return 0;
-
-error:
- return -1;
-}
-
-BT_HIDDEN
-int bt_dwarf_die_get_call_file(struct bt_dwarf_die *die, char **filename)
-{
- int ret;
- Dwarf_Sword file_no;
- const char *_filename = NULL;
- Dwarf_Files *src_files = NULL;
- Dwarf_Attribute *file_attr = NULL;
- struct bt_dwarf_die *cu_die = NULL;
-
- if (!die || !filename) {
- goto error;
- }
-
- file_attr = g_new0(Dwarf_Attribute, 1);
- if (!file_attr) {
- goto error;
- }
-
- file_attr = dwarf_attr(die->dwarf_die, DW_AT_call_file, file_attr);
- if (!file_attr) {
- goto error;
- }
-
- ret = dwarf_formsdata(file_attr, &file_no);
- if (ret) {
- goto error;
- }
-
- cu_die = bt_dwarf_die_create(die->cu);
- if (!cu_die) {
- goto error;
- }
-
- ret = dwarf_getsrcfiles(cu_die->dwarf_die, &src_files, NULL);
- if (ret) {
- goto error;
- }
-
- _filename = dwarf_filesrc(src_files, file_no, NULL, NULL);
- if (!_filename) {
- goto error;
- }
-
- *filename = strdup(_filename);
-
- bt_dwarf_die_destroy(cu_die);
- g_free(file_attr);
-
- return 0;
-
-error:
- bt_dwarf_die_destroy(cu_die);
- g_free(file_attr);
-
- return -1;
-}
-
-BT_HIDDEN
-int bt_dwarf_die_get_call_line(struct bt_dwarf_die *die,
- uint64_t *line_no)
-{
- int ret = 0;
- Dwarf_Attribute *line_attr = NULL;
- uint64_t _line_no;
-
- if (!die || !line_no) {
- goto error;
- }
-
- line_attr = g_new0(Dwarf_Attribute, 1);
- if (!line_attr) {
- goto error;
- }
-
- line_attr = dwarf_attr(die->dwarf_die, DW_AT_call_line, line_attr);
- if (!line_attr) {
- goto error;
- }
-
- ret = dwarf_formudata(line_attr, &_line_no);
- if (ret) {
- goto error;
- }
-
- *line_no = _line_no;
- g_free(line_attr);
-
- return 0;
-
-error:
- g_free(line_attr);
-
- return -1;
-}
-
-BT_HIDDEN
-int bt_dwarf_die_contains_addr(struct bt_dwarf_die *die, uint64_t addr,
- bool *contains)
-{
- int ret;
-
- ret = dwarf_haspc(die->dwarf_die, addr);
- if (ret == -1) {
- goto error;
- }
-
- *contains = (ret == 1);
-
- return 0;
-
-error:
- return -1;
-}
projects / babeltrace.git / blobdiff