1 // Copyright 2013 the V8 project authors. All rights reserved. 2 // Use of this source code is governed by a BSD-style license that can be 3 // found in the LICENSE file. 4 5 #include "src/api/api.h" 6 #include "src/deoptimizer/deoptimizer.h" 7 #include "src/execution/pointer-authentication.h" 8 9 namespace v8 { 10 namespace internal { 11 12 const int Deoptimizer::kEagerDeoptExitSize = kInstrSize; 13 #ifdef V8_ENABLE_CONTROL_FLOW_INTEGRITY 14 const int Deoptimizer::kLazyDeoptExitSize = 2 * kInstrSize; 15 #else 16 const int Deoptimizer::kLazyDeoptExitSize = 1 * kInstrSize; 17 #endif 18 GetFloatRegister(unsigned n) const19Float32 RegisterValues::GetFloatRegister(unsigned n) const { 20 return Float32::FromBits( 21 static_cast<uint32_t>(double_registers_[n].get_bits())); 22 } 23 SetCallerPc(unsigned offset,intptr_t value)24void FrameDescription::SetCallerPc(unsigned offset, intptr_t value) { 25 Address new_context = 26 static_cast<Address>(GetTop()) + offset + kPCOnStackSize; 27 value = PointerAuthentication::SignAndCheckPC(value, new_context); 28 SetFrameSlot(offset, value); 29 } 30 SetCallerFp(unsigned offset,intptr_t value)31void FrameDescription::SetCallerFp(unsigned offset, intptr_t value) { 32 SetFrameSlot(offset, value); 33 } 34 SetCallerConstantPool(unsigned offset,intptr_t value)35void FrameDescription::SetCallerConstantPool(unsigned offset, intptr_t value) { 36 // No embedded constant pool support. 37 UNREACHABLE(); 38 } 39 SetPc(intptr_t pc)40void FrameDescription::SetPc(intptr_t pc) { 41 if (ENABLE_CONTROL_FLOW_INTEGRITY_BOOL) { 42 CHECK( 43 Deoptimizer::IsValidReturnAddress(PointerAuthentication::StripPAC(pc))); 44 } 45 pc_ = pc; 46 } 47 48 } // namespace internal 49 } // namespace v8 50