Florian Schneider
8ce63e2fae
No WriteableInstructionScope needed since the code is not changed (only the constant pool). BUG= R=hausner@google.com Review URL: https://codereview.chromium.org//1139403002
66 lines
1.7 KiB
C++
66 lines
1.7 KiB
C++
// Copyright (c) 2013, 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_MIPS)
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#include "vm/code_patcher.h"
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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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uword CodeBreakpoint::OrigStubAddress() const {
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return saved_value_;
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}
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void CodeBreakpoint::PatchCode() {
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ASSERT(!is_enabled_);
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StubCode* stub_code = Isolate::Current()->stub_code();
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uword stub_target = 0;
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switch (breakpoint_kind_) {
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case RawPcDescriptors::kIcCall:
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case RawPcDescriptors::kUnoptStaticCall:
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stub_target = stub_code->ICCallBreakpointEntryPoint();
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break;
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case RawPcDescriptors::kClosureCall:
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stub_target = stub_code->ClosureCallBreakpointEntryPoint();
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break;
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case RawPcDescriptors::kRuntimeCall:
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stub_target = stub_code->RuntimeCallBreakpointEntryPoint();
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break;
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default:
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UNREACHABLE();
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}
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const Code& code = Code::Handle(code_);
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saved_value_ = CodePatcher::GetStaticCallTargetAt(pc_, code);
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CodePatcher::PatchStaticCallAt(pc_, code, stub_target);
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is_enabled_ = true;
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}
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void CodeBreakpoint::RestoreCode() {
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ASSERT(is_enabled_);
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const Code& code = Code::Handle(code_);
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switch (breakpoint_kind_) {
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case RawPcDescriptors::kIcCall:
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case RawPcDescriptors::kUnoptStaticCall:
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case RawPcDescriptors::kClosureCall:
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case RawPcDescriptors::kRuntimeCall: {
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CodePatcher::PatchStaticCallAt(pc_, code, saved_value_);
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break;
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}
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default:
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UNREACHABLE();
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}
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is_enabled_ = false;
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}
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} // namespace dart
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#endif // defined TARGET_ARCH_MIPS
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