| // 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" // Needed here to get TARGET_ARCH_ARM. |
| #if defined(TARGET_ARCH_ARM) |
| |
| #include "vm/code_patcher.h" |
| |
| #include "vm/instructions.h" |
| #include "vm/object.h" |
| |
| namespace dart { |
| |
| RawArray* CodePatcher::GetClosureArgDescAt(uword return_address, |
| const Code& code) { |
| ASSERT(code.ContainsInstructionAt(return_address)); |
| CallPattern call(return_address, code); |
| return call.ClosureArgumentsDescriptor(); |
| } |
| |
| |
| uword CodePatcher::GetStaticCallTargetAt(uword return_address, |
| const Code& code) { |
| ASSERT(code.ContainsInstructionAt(return_address)); |
| CallPattern call(return_address, code); |
| return call.TargetAddress(); |
| } |
| |
| |
| void CodePatcher::PatchStaticCallAt(uword return_address, |
| const Code& code, |
| uword new_target) { |
| ASSERT(code.ContainsInstructionAt(return_address)); |
| CallPattern call(return_address, code); |
| call.SetTargetAddress(new_target); |
| } |
| |
| |
| void CodePatcher::PatchInstanceCallAt(uword return_address, |
| const Code& code, |
| uword new_target) { |
| ASSERT(code.ContainsInstructionAt(return_address)); |
| CallPattern call(return_address, code); |
| call.SetTargetAddress(new_target); |
| } |
| |
| |
| void CodePatcher::InsertCallAt(uword start, uword target) { |
| // The inserted call should not overlap the lazy deopt jump code. |
| ASSERT(start + CallPattern::kFixedLengthInBytes <= target); |
| CallPattern::InsertAt(start, target); |
| } |
| |
| |
| uword CodePatcher::GetInstanceCallAt(uword return_address, |
| const Code& code, |
| ICData* ic_data) { |
| ASSERT(code.ContainsInstructionAt(return_address)); |
| CallPattern call(return_address, code); |
| if (ic_data != NULL) { |
| *ic_data = call.IcData(); |
| } |
| return call.TargetAddress(); |
| } |
| |
| |
| intptr_t CodePatcher::InstanceCallSizeInBytes() { |
| // The instance call instruction sequence has a variable size on ARM. |
| UNREACHABLE(); |
| return 0; |
| } |
| |
| |
| RawFunction* CodePatcher::GetUnoptimizedStaticCallAt( |
| uword return_address, const Code& code, ICData* ic_data_result) { |
| ASSERT(code.ContainsInstructionAt(return_address)); |
| CallPattern static_call(return_address, code); |
| ICData& ic_data = ICData::Handle(); |
| ic_data ^= static_call.IcData(); |
| if (ic_data_result != NULL) { |
| *ic_data_result = ic_data.raw(); |
| } |
| return ic_data.GetTargetAt(0); |
| } |
| |
| } // namespace dart |
| |
| #endif // defined TARGET_ARCH_ARM |