blob: 5cf11e4dd0314d0cdd4bd0b08ff397c01d457355 [file] [log] [blame]
// Copyright 2013 the V8 project authors. All rights reserved.
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
#include "src/api/api.h"
#include "src/deoptimizer/deoptimizer.h"
#include "src/execution/pointer-authentication.h"
namespace v8 {
namespace internal {
const int Deoptimizer::kEagerDeoptExitSize = kInstrSize;
#ifdef V8_ENABLE_CONTROL_FLOW_INTEGRITY
const int Deoptimizer::kLazyDeoptExitSize = 2 * kInstrSize;
#else
const int Deoptimizer::kLazyDeoptExitSize = 1 * kInstrSize;
#endif
Float32 RegisterValues::GetFloatRegister(unsigned n) const {
V8_ASSUME(n < arraysize(simd128_registers_));
return base::ReadUnalignedValue<Float32>(
reinterpret_cast<Address>(simd128_registers_ + n));
}
Float64 RegisterValues::GetDoubleRegister(unsigned n) const {
V8_ASSUME(n < arraysize(simd128_registers_));
return base::ReadUnalignedValue<Float64>(
reinterpret_cast<Address>(simd128_registers_ + n));
}
void FrameDescription::SetCallerPc(unsigned offset, intptr_t value) {
Address new_context =
static_cast<Address>(GetTop()) + offset + kPCOnStackSize;
value = PointerAuthentication::SignAndCheckPC(isolate_, value, new_context);
SetFrameSlot(offset, value);
}
void FrameDescription::SetCallerFp(unsigned offset, intptr_t value) {
SetFrameSlot(offset, value);
}
void FrameDescription::SetCallerConstantPool(unsigned offset, intptr_t value) {
// No embedded constant pool support.
UNREACHABLE();
}
void FrameDescription::SetPc(intptr_t pc) {
// TODO(v8:10026): We need to sign pointers to the embedded blob, which are
// stored in the isolate and code range objects.
if (ENABLE_CONTROL_FLOW_INTEGRITY_BOOL) {
CHECK(Deoptimizer::IsValidReturnAddress(PointerAuthentication::StripPAC(pc),
isolate_));
}
pc_ = pc;
}
} // namespace internal
} // namespace v8