Hi, I am relatively new to this library, but find it very nifty to print a callstack on a crash.
I face some issues getting function names printed out on an Arm device I am working on. First some backstory. I am on an Arm platform (http://wiki.lindeni.org/index.php/Lindenis_V536) The compilers I am using to crosscompile for the platform are called *arm-openwrt-linux-muslgnueabi-gcc* and *arm-openwrt-linux-muslgnueabi-g++* I am using libunwind in a version that is bundled with the crosscompile environment. (1.1 or 1.2.1 - both versions are available as zipfiles in the toolchain) I can choose them and compile programs that link againgst libunwind and I am allowed to execute them on the platform. My backtrace function is this void backtrace() { unw_cursor_t cursor; unw_context_t context; // Initialize cursor to current frame for local unwinding. unw_getcontext(&context); unw_init_local(&cursor, &context); // Unwind frames one by one, going up the frame stack. while (unw_step(&cursor) > 0) { unw_word_t pc; unw_word_t offset; unw_get_reg(&cursor, UNW_REG_IP, &pc); if (pc == 0) { break; } printf("%010p:", (void*)pc); char sym[256]; if (unw_get_proc_name(&cursor, sym, sizeof(sym), &offset) == 0) { printf(" (%s+0x%p)\n", sym, (void*)offset); } else { printf(" -- error: unable to obtain symbol name for this frame\n"); } } } I get stacktraces like this: (Always without function names) 0x00016bb0: -- error: unable to obtain symbol name for this frame 0xb6fb9fac: -- error: unable to obtain symbol name for this frame 0x00016950: -- error: unable to obtain symbol name for this frame 0x00014db4: -- error: unable to obtain symbol name for this frame 0xb6f9c4ec: -- error: unable to obtain symbol name for this frame I have tried a range of compiler flags to change this, but with little luck. -g -funwind-tables -unwind-tables -fomit-frame-pointer -rdynamic -fasynchronous-unwind-tables -mapcs-frame What could I be doing wrong? Or are function names just not accessible on ARM? Kind regards Jesper
