701 // see if it's a valid frame
702 if (fr.pc()) {
703 st->print_cr("Native frames: (J=compiled Java code, j=interpreted, Vv=VM code, C=native code)");
704
705 int count = 0;
706 while (count++ < StackPrintLimit) {
707 fr.print_on_error(st, buf, buf_size);
708 st->cr();
709 // Compiled code may use EBP register on x86 so it looks like
710 // non-walkable C frame. Use frame.sender() for java frames.
711 if (t && t->is_Java_thread()) {
712 // Catch very first native frame by using stack address.
713 // For JavaThread stack_base and stack_size should be set.
714 if (!t->on_local_stack((address)(fr.real_fp() + 1))) {
715 break;
716 }
717 if (fr.is_java_frame() || fr.is_native_frame() || fr.is_runtime_frame()) {
718 RegisterMap map((JavaThread*)t, false); // No update
719 fr = fr.sender(&map);
720 } else {
721 fr = os::get_sender_for_C_frame(&fr);
722 }
723 } else {
724 // is_first_C_frame() does only simple checks for frame pointer,
725 // it will pass if java compiled code has a pointer in EBP.
726 if (os::is_first_C_frame(&fr)) break;
727 fr = os::get_sender_for_C_frame(&fr);
728 }
729 }
730
731 if (count > StackPrintLimit) {
732 st->print_cr("...<more frames>...");
733 }
734
735 st->cr();
736 }
737 }
738
739 #ifndef PRODUCT
740
741 extern "C" void pns(void* sp, void* fp, void* pc) { // print native stack
742 Command c("pns");
743 static char buf[O_BUFLEN];
744 Thread* t = ThreadLocalStorage::get_thread_slow();
745 // Call generic frame constructor (certain arguments may be ignored)
746 frame fr(sp, fp, pc);
747 print_native_stack(tty, fr, t, buf, sizeof(buf));
748 }
749
750 #endif // !PRODUCT
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701 // see if it's a valid frame
702 if (fr.pc()) {
703 st->print_cr("Native frames: (J=compiled Java code, j=interpreted, Vv=VM code, C=native code)");
704
705 int count = 0;
706 while (count++ < StackPrintLimit) {
707 fr.print_on_error(st, buf, buf_size);
708 st->cr();
709 // Compiled code may use EBP register on x86 so it looks like
710 // non-walkable C frame. Use frame.sender() for java frames.
711 if (t && t->is_Java_thread()) {
712 // Catch very first native frame by using stack address.
713 // For JavaThread stack_base and stack_size should be set.
714 if (!t->on_local_stack((address)(fr.real_fp() + 1))) {
715 break;
716 }
717 if (fr.is_java_frame() || fr.is_native_frame() || fr.is_runtime_frame()) {
718 RegisterMap map((JavaThread*)t, false); // No update
719 fr = fr.sender(&map);
720 } else {
721 fr = os::get_sender_for_C_frame(t, &fr);
722 }
723 } else {
724 // is_first_C_frame() does only simple checks for frame pointer,
725 // it will pass if java compiled code has a pointer in EBP.
726 if (os::is_first_C_frame(&fr)) break;
727 fr = os::get_sender_for_C_frame(t, &fr);
728 }
729 }
730
731 if (count > StackPrintLimit) {
732 st->print_cr("...<more frames>...");
733 }
734
735 st->cr();
736 }
737 }
738
739 #ifndef PRODUCT
740
741 extern "C" void pns(void* sp, void* fp, void* pc) { // print native stack
742 Command c("pns");
743 static char buf[O_BUFLEN];
744 Thread* t = ThreadLocalStorage::get_thread_slow();
745 // Call generic frame constructor (certain arguments may be ignored)
746 frame fr(t, sp, fp, pc);
747 print_native_stack(tty, fr, t, buf, sizeof(buf));
748 }
749
750 #endif // !PRODUCT
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