StepOver, StepInto, StepOut

runtime/vm/stub_code_x64.cc

 // Copyright (c) 2012, the Dart project authors.  Please see the AUTHORS file
 // for details. All rights reserved. Use of this source code is governed by a
 // BSD-style license that can be found in the LICENSE file.
 
 #include "vm/globals.h"
 #if defined(TARGET_ARCH_X64)
 
 #include "vm/code_generator.h"
 #include "vm/compiler.h"
 #include "vm/ic_data.h"
@@ skipping 1700 matching lines @@
 
   // Now call the static function. The breakpoint handler function
   // ensures that the call target is compiled.
   __ movq(RAX, FieldAddress(RBX, Function::code_offset()));
   __ movq(RBX, FieldAddress(RAX, Code::instructions_offset()));
   __ addq(RBX, Immediate(Instructions::HeaderSize() - kHeapObjectTag));
   __ jmp(RBX);
 }
 
 
+//  TOS(0): return address (Dart code).
+void StubCode::GenerateBreakpointReturnStub(Assembler* assembler) {
+  __ EnterFrame(0);
+  __ pushq(RAX);
+  __ CallRuntimeFromStub(kBreakpointReturnHandlerRuntimeEntry);
+  __ popq(RAX);
+  __ LeaveFrame();
+
+  __ popq(R11);  // discard return address of call to this stub.
+  __ LeaveFrame();
+  __ ret();
+}
+
+
 //  RBX: Inline cache data array.
 //  R10: Arguments array.
 //  TOS(0): return address (Dart code).
 void StubCode::GenerateBreakpointDynamicStub(Assembler* assembler) {
-  __ Untested("BreakpointDynamic stub");
   __ EnterFrame(0);
   __ pushq(RBX);
   __ pushq(R10);
   __ CallRuntimeFromStub(kBreakpointDynamicHandlerRuntimeEntry);
   __ popq(R10);
   __ popq(RBX);
   __ LeaveFrame();
-  // Now call the dynamic function.
+
+  // Find out which dispatch stub to call.
+  Label ic_cache_one_arg;
+  __ movq(RCX, FieldAddress(RBX,
+      Array::data_offset() + ICData::kNumArgsCheckedIndex * kWordSize));
+  const Immediate value = Immediate(reinterpret_cast<intptr_t>(Smi::New(1)));
+  __ cmpq(RCX, value);
+  __ j(EQUAL, &ic_cache_one_arg, Assembler::kNearJump);
+  __ jmp(&StubCode::TwoArgsCheckInlineCacheLabel());
+  __ Bind(&ic_cache_one_arg);
   __ jmp(&StubCode::OneArgCheckInlineCacheLabel());
 }
 
 }  // namespace dart
 
 #endif  // defined TARGET_ARCH_X64