| // Copyright (c) 2011, 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_ARM) |
| |
| #include "vm/code_patcher.h" |
| #include "vm/cpu.h" |
| #include "vm/debugger.h" |
| #include "vm/instructions.h" |
| #include "vm/stub_code.h" |
| |
| namespace dart { |
| |
| RawCode* CodeBreakpoint::OrigStubAddress() const { |
| return saved_value_; |
| } |
| |
| |
| void CodeBreakpoint::PatchCode() { |
| ASSERT(!is_enabled_); |
| Code& stub_target = Code::Handle(); |
| switch (breakpoint_kind_) { |
| case RawPcDescriptors::kIcCall: |
| case RawPcDescriptors::kUnoptStaticCall: |
| stub_target = StubCode::ICCallBreakpoint_entry()->code(); |
| break; |
| case RawPcDescriptors::kRuntimeCall: |
| stub_target = StubCode::RuntimeCallBreakpoint_entry()->code(); |
| break; |
| default: |
| UNREACHABLE(); |
| } |
| const Code& code = Code::Handle(code_); |
| saved_value_ = CodePatcher::GetStaticCallTargetAt(pc_, code); |
| CodePatcher::PatchStaticCallAt(pc_, code, stub_target); |
| is_enabled_ = true; |
| } |
| |
| |
| void CodeBreakpoint::RestoreCode() { |
| ASSERT(is_enabled_); |
| const Code& code = Code::Handle(code_); |
| switch (breakpoint_kind_) { |
| case RawPcDescriptors::kIcCall: |
| case RawPcDescriptors::kUnoptStaticCall: |
| case RawPcDescriptors::kRuntimeCall: { |
| CodePatcher::PatchStaticCallAt(pc_, code, Code::Handle(saved_value_)); |
| break; |
| } |
| default: |
| UNREACHABLE(); |
| } |
| is_enabled_ = false; |
| } |
| |
| } // namespace dart |
| |
| #endif // defined TARGET_ARCH_ARM |