< prev index next > src/hotspot/cpu/aarch64/frame_aarch64.cpp
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sender_sp = _unextended_sp + _cb->frame_size();
// Is sender_sp safe?
if (!thread->is_in_full_stack_checked((address)sender_sp)) {
return false;
}
- sender_unextended_sp = sender_sp;
sender_pc = (address) *(sender_sp-1);
// Note: frame::sender_sp_offset is only valid for compiled frame
! saved_fp = (intptr_t*) *(sender_sp - frame::sender_sp_offset);
! }
// If the potential sender is the interpreter then we can do some more checking
if (Interpreter::contains(sender_pc)) {
// fp is always saved in a recognizable place in any code we generate. However
sender_sp = _unextended_sp + _cb->frame_size();
// Is sender_sp safe?
if (!thread->is_in_full_stack_checked((address)sender_sp)) {
return false;
}
sender_pc = (address) *(sender_sp-1);
// Note: frame::sender_sp_offset is only valid for compiled frame
! intptr_t **saved_fp_addr = (intptr_t**) (sender_sp - frame::sender_sp_offset);
! saved_fp = *saved_fp_addr;
+ // Repair the sender sp if this is a method with scalarized inline type args
+ sender_sp = repair_sender_sp(sender_sp, saved_fp_addr);
+ sender_unextended_sp = sender_sp;
+ }
// If the potential sender is the interpreter then we can do some more checking
if (Interpreter::contains(sender_pc)) {
// fp is always saved in a recognizable place in any code we generate. However
// in C2 code but it will have been pushed onto the stack. so we
// have to find it relative to the unextended sp
assert(_cb->frame_size() >= 0, "must have non-zero frame size");
intptr_t* l_sender_sp = unextended_sp() + _cb->frame_size();
- intptr_t* unextended_sp = l_sender_sp;
! // the return_address is always the word on the stack
! address sender_pc = (address) *(l_sender_sp-1);
intptr_t** saved_fp_addr = (intptr_t**) (l_sender_sp - frame::sender_sp_offset);
// assert (sender_sp() == l_sender_sp, "should be");
// assert (*saved_fp_addr == link(), "should be");
if (map->update_map()) {
// Tell GC to use argument oopmaps for some runtime stubs that need it.
// For C1, the runtime stub might not have oop maps, so set this flag
// outside of update_register_map.
! map->set_include_argument_oops(_cb->caller_must_gc_arguments(map->thread()));
if (_cb->oop_maps() != NULL) {
OopMapSet::update_register_map(this, map);
}
// Since the prolog does the save and restore of FP there is no
// in C2 code but it will have been pushed onto the stack. so we
// have to find it relative to the unextended sp
assert(_cb->frame_size() >= 0, "must have non-zero frame size");
intptr_t* l_sender_sp = unextended_sp() + _cb->frame_size();
! #ifdef ASSERT
! address sender_pc_copy = (address) *(l_sender_sp-1);
+ #endif
intptr_t** saved_fp_addr = (intptr_t**) (l_sender_sp - frame::sender_sp_offset);
// assert (sender_sp() == l_sender_sp, "should be");
// assert (*saved_fp_addr == link(), "should be");
+ // Repair the sender sp if the frame has been extended
+ l_sender_sp = repair_sender_sp(l_sender_sp, saved_fp_addr);
+
+ // The return address is always the first word on the stack
+ address sender_pc = (address) *(l_sender_sp-1);
+
+ #ifdef ASSERT
+ if (sender_pc != sender_pc_copy) {
+ // When extending the stack in the callee method entry to make room for unpacking of value
+ // type args, we keep a copy of the sender pc at the expected location in the callee frame.
+ // If the sender pc is patched due to deoptimization, the copy is not consistent anymore.
+ nmethod* nm = CodeCache::find_blob(sender_pc)->as_nmethod();
+ assert(sender_pc == nm->deopt_mh_handler_begin() || sender_pc == nm->deopt_handler_begin(), "unexpected sender pc");
+ }
+ #endif
+
if (map->update_map()) {
// Tell GC to use argument oopmaps for some runtime stubs that need it.
// For C1, the runtime stub might not have oop maps, so set this flag
// outside of update_register_map.
! bool caller_args = _cb->caller_must_gc_arguments(map->thread());
+ #ifdef COMPILER1
+ if (!caller_args) {
+ nmethod* nm = _cb->as_nmethod_or_null();
+ if (nm != NULL && nm->is_compiled_by_c1() && nm->method()->has_scalarized_args() &&
+ pc() < nm->verified_inline_entry_point()) {
+ // The VEP and VIEP(RO) of C1-compiled methods call buffer_inline_args_xxx
+ // before doing any argument shuffling, so we need to scan the oops
+ // as the caller passes them.
+ caller_args = true;
+ }
+ }
+ #endif
+ map->set_include_argument_oops(caller_args);
if (_cb->oop_maps() != NULL) {
OopMapSet::update_register_map(this, map);
}
// Since the prolog does the save and restore of FP there is no
// an oopmap entry since if our caller was compiled code there
// could be live jvm state in it.
update_map_with_saved_link(map, saved_fp_addr);
}
! return frame(l_sender_sp, unextended_sp, *saved_fp_addr, sender_pc);
}
//------------------------------------------------------------------------------
// frame::sender_raw
frame frame::sender_raw(RegisterMap* map) const {
// an oopmap entry since if our caller was compiled code there
// could be live jvm state in it.
update_map_with_saved_link(map, saved_fp_addr);
}
! return frame(l_sender_sp, l_sender_sp, *saved_fp_addr, sender_pc);
}
//------------------------------------------------------------------------------
// frame::sender_raw
frame frame::sender_raw(RegisterMap* map) const {
} else {
tos_addr = (intptr_t*)interpreter_frame_tos_address();
}
switch (type) {
+ case T_INLINE_TYPE :
case T_OBJECT :
case T_ARRAY : {
oop obj;
if (method->is_native()) {
obj = cast_to_oop(at(interpreter_frame_oop_temp_offset));
init((intptr_t*)sp, (intptr_t*)fp, (address)pc);
}
#endif
+ // Check for a method with scalarized inline type arguments that needs
+ // a stack repair and return the repaired sender stack pointer.
+ intptr_t* frame::repair_sender_sp(intptr_t* sender_sp, intptr_t** saved_fp_addr) const {
+ CompiledMethod* cm = _cb->as_compiled_method_or_null();
+ if (cm != NULL && cm->needs_stack_repair()) {
+ // The stack increment resides just below the saved FP on the stack and
+ // records the total frame size exluding the two words for saving FP and LR.
+ intptr_t* sp_inc_addr = (intptr_t*) (saved_fp_addr - 1);
+ assert(*sp_inc_addr % StackAlignmentInBytes == 0, "sp_inc not aligned");
+ int real_frame_size = (*sp_inc_addr / wordSize) + 2;
+ assert(real_frame_size >= _cb->frame_size() && real_frame_size <= 1000000, "invalid frame size");
+ sender_sp = unextended_sp() + real_frame_size;
+ }
+ return sender_sp;
+ }
+
void JavaFrameAnchor::make_walkable(JavaThread* thread) {
// last frame set?
if (last_Java_sp() == NULL) return;
// already walkable?
if (walkable()) return;
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