frame frame::sender_for_entry_frame(RegisterMap* map) const {
assert(map != NULL, "map must be set");
// Java frame called from C; skip all C frames and return top C
// frame of that chunk as the sender
JavaFrameAnchor* jfa = entry_frame_call_wrapper()->anchor();
assert(!entry_frame_is_first(), "next Java fp must be non zero");
assert(jfa->last_Java_sp() > sp(), "must be above this frame on stack");
map->clear();
assert(map->include_argument_oops(), "should be set by clear");
if (jfa->last_Java_pc() != NULL ) {
frame fr(jfa->last_Java_sp(), jfa->last_Java_fp(), jfa->last_Java_pc());
return fr;
}
frame fr(jfa->last_Java_sp(), jfa->last_Java_fp());
return fr;
}
frame frame::sender_for_entry_frame(RegisterMap *map) const {
assert(map != NULL, "map must be set");
// Java frame called from C; skip all C frames and return top C
// frame of that chunk as the sender
JavaFrameAnchor* jfa = entry_frame_call_wrapper()->anchor();
assert(!entry_frame_is_first(), "next Java fp must be non zero");
assert(jfa->last_Java_sp() > _sp, "must be above this frame on stack");
intptr_t* last_Java_sp = jfa->last_Java_sp();
// Since we are walking the stack now this nested anchor is obviously walkable
// even if it wasn't when it was stacked.
if (!jfa->walkable()) {
// Capture _last_Java_pc (if needed) and mark anchor walkable.
jfa->capture_last_Java_pc(_sp);
}
assert(jfa->last_Java_pc() != NULL, "No captured pc!");
map->clear();
map->make_integer_regs_unsaved();
map->shift_window(last_Java_sp, NULL);
assert(map->include_argument_oops(), "should be set by clear");
return frame(last_Java_sp, frame::unpatchable, jfa->last_Java_pc());
}
frame frame::sender_for_entry_frame(RegisterMap *map) const {
assert(map != NULL, "map must be set");
// Java frame called from C; skip all C frames and return top C
// frame of that chunk as the sender.
JavaFrameAnchor* jfa = entry_frame_call_wrapper()->anchor();
assert(!entry_frame_is_first(), "next Java fp must be non zero");
assert(jfa->last_Java_sp() > _sp, "must be above this frame on stack");
map->clear();
assert(map->include_argument_oops(), "should be set by clear");
if (jfa->last_Java_pc() != NULL) {
frame fr(jfa->last_Java_sp(), jfa->last_Java_pc());
return fr;
}
// Last_java_pc is not set, if we come here from compiled code. The
// constructor retrieves the PC from the stack.
frame fr(jfa->last_Java_sp());
return fr;
}
bool is_first_frame() const { return _anchor.last_Java_sp() == NULL; }
