#define TEXT_SECTION_NAME ".text"
#define SYMBOL_TAB_SECTION_NAME ".symtab"
#define STRING_TAB_SECTION_NAME ".strtab"
+#define DYNAMIC_SYMBOL_TAB_SECTION_NAME ".dynsym"
+#define DYNAMIC_STRING_TAB_SECTION_NAME ".dynstr"
#define NOTE_STAPSDT_SECTION_NAME ".note.stapsdt"
#define NOTE_STAPSDT_NAME "stapsdt"
#define NOTE_STAPSDT_TYPE 3
char *curr_sym_str = NULL;
char *symbol_table_data = NULL;
char *string_table_data = NULL;
+ char *string_table_name = NULL;
struct lttng_elf_shdr *symtab_hdr = NULL;
struct lttng_elf_shdr *strtab_hdr = NULL;
struct lttng_elf *elf = NULL;
goto end;
}
- /* Get the symbol table section header. */
+ /*
+ * The .symtab section might not exist on stripped binaries.
+ * Try to get the symbol table section header first. If it's absent,
+ * try to get the dynamic symbol table. All symbols in the dynamic
+ * symbol tab are in the (normal) symbol table if it exists.
+ */
ret = lttng_elf_get_section_hdr_by_name(elf, SYMBOL_TAB_SECTION_NAME,
&symtab_hdr);
if (ret) {
- DBG("Cannot get ELF Symbol Table section.");
- ret = LTTNG_ERR_ELF_PARSING;
- goto destroy_elf;
+ DBG("Cannot get ELF Symbol Table section. Trying to get ELF Dynamic Symbol Table section.");
+ /* Get the dynamic symbol table section header. */
+ ret = lttng_elf_get_section_hdr_by_name(elf, DYNAMIC_SYMBOL_TAB_SECTION_NAME,
+ &symtab_hdr);
+ if (ret) {
+ DBG("Cannot get ELF Symbol Table nor Dynamic Symbol Table sections.");
+ ret = LTTNG_ERR_ELF_PARSING;
+ goto destroy_elf;
+ }
+ string_table_name = DYNAMIC_STRING_TAB_SECTION_NAME;
+ } else {
+ string_table_name = STRING_TAB_SECTION_NAME;
}
+
/* Get the data associated with the symbol table section. */
symbol_table_data = lttng_elf_get_section_data(elf, symtab_hdr);
if (symbol_table_data == NULL) {
}
/* Get the string table section header. */
- ret = lttng_elf_get_section_hdr_by_name(elf, STRING_TAB_SECTION_NAME,
+ ret = lttng_elf_get_section_hdr_by_name(elf, string_table_name,
&strtab_hdr);
if (ret) {
DBG("Cannot get ELF string table section.");
goto destroy_elf_error;
}
- curr_data_ptr = stap_note_section_data;
next_note_ptr = stap_note_section_data;
curr_note_section_begin = stap_note_section_data;