Index: src/builtins/x64/builtins-x64.cc |
diff --git a/src/builtins/x64/builtins-x64.cc b/src/builtins/x64/builtins-x64.cc |
index 076cc8596cebf54b9b70be50beaab330660bf122..95a5540ffc6479807ec4f666054e3fb3b5555da2 100644 |
--- a/src/builtins/x64/builtins-x64.cc |
+++ b/src/builtins/x64/builtins-x64.cc |
@@ -1351,6 +1351,69 @@ void Builtins::Generate_NotifyStubFailureSaveDoubles(MacroAssembler* masm) { |
Generate_NotifyStubFailureHelper(masm, kSaveFPRegs); |
} |
+void Builtins::Generate_NotifyBuiltinContinuation(MacroAssembler* masm) { |
+ // Enter an internal frame. |
+ { |
+ FrameScope scope(masm, StackFrame::INTERNAL); |
+ |
+ // Preserve registers across notification, this is important for compiled |
+ // stubs that tail call the runtime on deopts passing their parameters in |
+ // registers. |
+ __ Pushad(); |
+ __ CallRuntime(Runtime::kNotifyStubFailure, false); |
+ __ Popad(); |
+ // Tear down internal frame. |
+ } |
+ |
+ __ DropUnderReturnAddress(1); // Ignore state offset |
+ __ ret(0); // Return to IC Miss stub, continuation still on stack. |
+} |
+ |
+namespace { |
+static void Generate_ContinueToBuiltinHelper(MacroAssembler* masm, |
+ bool java_script_builtin, |
+ bool with_result) { |
+ const RegisterConfiguration* config(RegisterConfiguration::Turbofan()); |
+ int allocatable_register_count = config->num_allocatable_general_registers(); |
+ if (with_result) { |
+ __ movq(Operand(rsp, |
+ config->num_allocatable_general_registers() * kPointerSize + |
+ TYPED_FRAME_SIZE(1)), |
+ rax); |
+ } |
+ for (int i = allocatable_register_count - 1; i >= 0; --i) { |
+ int code = config->GetAllocatableGeneralCode(i); |
+ __ popq(Register::from_code(code)); |
+ if (java_script_builtin && code == kJavaScriptCallArgCountRegister.code()) { |
+ __ SmiToInteger32(Register::from_code(code), Register::from_code(code)); |
+ } |
+ } |
+ __ movq(rbp, Operand(rsp, 2 * kPointerSize)); |
+ __ popq(Operand(rsp, TYPED_FRAME_SIZE_FROM_SP(0))); |
+ __ addq(rsp, Immediate(kPointerSize)); |
+ __ addq(Operand(rsp, 0), Immediate(Code::kHeaderSize - kHeapObjectTag)); |
+ __ Ret(); |
+} |
+} // namespace |
+ |
+void Builtins::Generate_ContinueToCodeStubBuiltin(MacroAssembler* masm) { |
+ Generate_ContinueToBuiltinHelper(masm, false, false); |
+} |
+ |
+void Builtins::Generate_ContinueToCodeStubBuiltinWithResult( |
+ MacroAssembler* masm) { |
+ Generate_ContinueToBuiltinHelper(masm, false, true); |
+} |
+ |
+void Builtins::Generate_ContinueToJavaScriptBuiltin(MacroAssembler* masm) { |
+ Generate_ContinueToBuiltinHelper(masm, true, false); |
+} |
+ |
+void Builtins::Generate_ContinueToJavaScriptBuiltinWithResult( |
+ MacroAssembler* masm) { |
+ Generate_ContinueToBuiltinHelper(masm, true, true); |
+} |
+ |
static void Generate_NotifyDeoptimizedHelper(MacroAssembler* masm, |
Deoptimizer::BailoutType type) { |
// Enter an internal frame. |