Version 1.1.0-dev.5.2

dart/runtime/vm/stub_code_mips.cc

 // Copyright (c) 2013, 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_MIPS)
 
 #include "vm/assembler.h"
 #include "vm/code_generator.h"
 #include "vm/compiler.h"
@@ skipping 2136 matching lines @@
   __ Bind(&one_arg);
   __ Branch(&StubCode::OneArgCheckInlineCacheLabel());
   __ Bind(&two_args);
   __ Branch(&StubCode::TwoArgsCheckInlineCacheLabel());
   __ Bind(&three_args);
   __ Branch(&StubCode::ThreeArgsCheckInlineCacheLabel());
   __ break_(0);
 }
 
 
+// Called only from unoptimized code. All relevant registers have been saved.
+// RA: return address.
+void StubCode::GenerateDebugStepCheckStub(Assembler* assembler) {
+  // Check single stepping.
+  Label not_stepping;
+  __ lw(T0, FieldAddress(CTX, Context::isolate_offset()));
+  __ lbu(T0, Address(T0, Isolate::single_step_offset()));
+  __ BranchEqual(T0, 0, &not_stepping);
+  // Call single step callback in debugger.
+  __ addiu(SP, SP, Immediate(-1 * kWordSize));
+  __ sw(RA, Address(SP, 0 * kWordSize));  // Return address.
+  __ CallRuntime(kSingleStepHandlerRuntimeEntry, 0);
+  __ lw(RA, Address(SP, 0 * kWordSize));
+  __ addiu(SP, SP, Immediate(1 * kWordSize));
+  __ Bind(&not_stepping);
+  __ Ret();
+}
+
+
 // Used to check class and type arguments. Arguments passed in registers:
 // RA: return address.
 // A0: instance (must be preserved).
 // A1: instantiator type arguments or NULL.
 // A2: cache array.
 // Result in V0: null -> not found, otherwise result (true or false).
 static void GenerateSubtypeNTestCacheStub(Assembler* assembler, int n) {
   __ TraceSimMsg("SubtypeNTestCacheStub");
   ASSERT((1 <= n) && (n <= 3));
   if (n > 1) {
@@ skipping 280 matching lines @@
   const Register right = T0;
   __ lw(left, Address(SP, 1 * kWordSize));
   __ lw(right, Address(SP, 0 * kWordSize));
   GenerateIdenticalWithNumberCheckStub(assembler, left, right, temp1, temp2);
   __ Ret();
 }
 
 }  // namespace dart
 
 #endif  // defined TARGET_ARCH_MIPS