hausner@google.com
c571528323
Replace the code smashing breakpoints at function returns with a call to a runtime stub that checks whether the debugger is single stepping. The call to the stub is only emitted in unoptimized code. R=srdjan@google.com Review URL: https://codereview.chromium.org//106053011 git-svn-id: https://dart.googlecode.com/svn/branches/bleeding_edge/dart@31435 260f80e4-7a28-3924-810f-c04153c831b5
37 lines
1.2 KiB
C++
37 lines
1.2 KiB
C++
// Copyright (c) 2011, the Dart project authors. Please see the AUTHORS file
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// for details. All rights reserved. Use of this source code is governed by a
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// BSD-style license that can be found in the LICENSE file.
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#include "vm/globals.h"
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#if defined(TARGET_ARCH_ARM)
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#include "vm/cpu.h"
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#include "vm/debugger.h"
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#include "vm/instructions.h"
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#include "vm/stub_code.h"
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namespace dart {
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RawInstance* ActivationFrame::GetInstanceCallReceiver(
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intptr_t num_actual_args) {
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ASSERT(num_actual_args > 0); // At minimum we have a receiver on the stack.
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// Stack pointer points to last argument that was pushed on the stack.
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uword receiver_addr = sp() + ((num_actual_args - 1) * kWordSize);
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return reinterpret_cast<RawInstance*>(
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*reinterpret_cast<uword*>(receiver_addr));
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}
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RawObject* ActivationFrame::GetClosureObject(intptr_t num_actual_args) {
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// At a minimum we have the closure object on the stack.
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ASSERT(num_actual_args > 0);
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// Stack pointer points to last argument that was pushed on the stack.
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uword closure_addr = sp() + ((num_actual_args - 1) * kWordSize);
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return reinterpret_cast<RawObject*>(
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*reinterpret_cast<uword*>(closure_addr));
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}
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} // namespace dart
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#endif // defined TARGET_ARCH_ARM
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