--- /dev/null
+/*
+ * 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,
+ int *contains)
+{
+ int ret;
+
+ ret = dwarf_haspc(die->dwarf_die, addr);
+ if (ret == -1) {
+ goto error;
+ }
+
+ *contains = ret;
+
+ return 0;
+
+error:
+ return -1;
+}
projects / babeltrace.git / blobdiff