| // Copyright (c) 2021, 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_RISCV32) || defined(TARGET_ARCH_RISCV64) |
| |
| #include "vm/code_patcher.h" |
| #include "vm/cpu.h" |
| #include "vm/debugger.h" |
| #include "vm/instructions.h" |
| #include "vm/stub_code.h" |
| |
| namespace dart { |
| |
| #ifndef PRODUCT |
| |
| CodePtr CodeBreakpoint::OrigStubAddress() const { |
| return saved_value_; |
| } |
| |
| void CodeBreakpoint::PatchCode() { |
| ASSERT(!IsEnabled()); |
| const Code& code = Code::Handle(code_); |
| switch (breakpoint_kind_) { |
| case UntaggedPcDescriptors::kIcCall: { |
| Object& data = Object::Handle(); |
| saved_value_ = CodePatcher::GetInstanceCallAt(pc_, code, &data); |
| CodePatcher::PatchInstanceCallAt(pc_, code, data, |
| StubCode::ICCallBreakpoint()); |
| break; |
| } |
| case UntaggedPcDescriptors::kUnoptStaticCall: { |
| saved_value_ = CodePatcher::GetStaticCallTargetAt(pc_, code); |
| CodePatcher::PatchPoolPointerCallAt( |
| pc_, code, StubCode::UnoptStaticCallBreakpoint()); |
| break; |
| } |
| case UntaggedPcDescriptors::kRuntimeCall: { |
| saved_value_ = CodePatcher::GetStaticCallTargetAt(pc_, code); |
| CodePatcher::PatchPoolPointerCallAt(pc_, code, |
| StubCode::RuntimeCallBreakpoint()); |
| break; |
| } |
| default: |
| UNREACHABLE(); |
| } |
| } |
| |
| void CodeBreakpoint::RestoreCode() { |
| ASSERT(IsEnabled()); |
| const Code& code = Code::Handle(code_); |
| switch (breakpoint_kind_) { |
| case UntaggedPcDescriptors::kIcCall: { |
| Object& data = Object::Handle(); |
| CodePatcher::GetInstanceCallAt(pc_, code, &data); |
| CodePatcher::PatchInstanceCallAt(pc_, code, data, |
| Code::Handle(saved_value_)); |
| break; |
| } |
| case UntaggedPcDescriptors::kUnoptStaticCall: |
| case UntaggedPcDescriptors::kRuntimeCall: { |
| CodePatcher::PatchPoolPointerCallAt(pc_, code, |
| Code::Handle(saved_value_)); |
| break; |
| } |
| default: |
| UNREACHABLE(); |
| } |
| } |
| |
| #endif // !PRODUCT |
| |
| } // namespace dart |
| |
| #endif // defined TARGET_ARCH_RISCV |