| // 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/flow_graph_compiler.h" |
| #include "vm/instructions.h" |
| #include "vm/object.h" |
| |
| namespace dart { |
| |
| RawCode* CodePatcher::GetStaticCallTargetAt(uword return_address, |
| const Code& code) { |
| ASSERT(code.ContainsInstructionAt(return_address)); |
| CallPattern call(return_address, code); |
| return call.TargetCode(); |
| } |
| |
| |
| void CodePatcher::PatchStaticCallAt(uword return_address, |
| const Code& code, |
| const Code& new_target) { |
| ASSERT(code.ContainsInstructionAt(return_address)); |
| CallPattern call(return_address, code); |
| call.SetTargetCode(new_target); |
| } |
| |
| |
| void CodePatcher::InsertDeoptimizationCallAt(uword start, uword target) { |
| // The inserted call should not overlap the lazy deopt jump code. |
| ASSERT(start + CallPattern::DeoptCallPatternLengthInBytes() <= target); |
| CallPattern::InsertDeoptCallAt(start, target); |
| } |
| |
| |
| RawCode* 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.TargetCode(); |
| } |
| |
| |
| 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); |
| } |
| |
| |
| void CodePatcher::PatchSwitchableCallAt(uword return_address, |
| const Code& code, |
| const ICData& ic_data, |
| const MegamorphicCache& cache, |
| const Code& lookup_stub) { |
| ASSERT(code.ContainsInstructionAt(return_address)); |
| SwitchableCallPattern call(return_address, code); |
| ASSERT(call.cache() == ic_data.raw()); |
| call.SetLookupStub(lookup_stub); |
| call.SetCache(cache); |
| } |
| |
| |
| void CodePatcher::PatchNativeCallAt(uword return_address, |
| const Code& code, |
| NativeFunction target, |
| const Code& trampoline) { |
| ASSERT(code.ContainsInstructionAt(return_address)); |
| NativeCallPattern call(return_address, code); |
| call.set_target(trampoline); |
| call.set_native_function(target); |
| } |
| |
| |
| RawCode* CodePatcher::GetNativeCallAt(uword return_address, |
| const Code& code, |
| NativeFunction* target) { |
| ASSERT(code.ContainsInstructionAt(return_address)); |
| NativeCallPattern call(return_address, code); |
| *target = call.native_function(); |
| return call.target(); |
| } |
| |
| } // namespace dart |
| |
| #endif // defined TARGET_ARCH_ARM |