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// Copyright 2012 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/deoptimizer/deoptimizer.h"
#include "src/execution/isolate-data.h"
namespace v8 {
namespace internal {
// The deopt exit sizes below depend on the following IsolateData layout
// guarantees:
#define ASSERT_OFFSET(BuiltinName) \
STATIC_ASSERT(IsolateData::builtin_tier0_entry_table_offset() + \
Builtins::ToInt(BuiltinName) * kSystemPointerSize <= \
0x1000)
ASSERT_OFFSET(Builtin::kDeoptimizationEntry_Eager);
ASSERT_OFFSET(Builtin::kDeoptimizationEntry_Lazy);
ASSERT_OFFSET(Builtin::kDeoptimizationEntry_Soft);
#undef ASSERT_OFFSET
const bool Deoptimizer::kSupportsFixedDeoptExitSizes = true;
const int Deoptimizer::kNonLazyDeoptExitSize = 2 * kInstrSize;
const int Deoptimizer::kLazyDeoptExitSize = 2 * kInstrSize;
Float32 RegisterValues::GetFloatRegister(unsigned n) const {
const int kShift = n % 2 == 0 ? 0 : 32;
return Float32::FromBits(
static_cast<uint32_t>(double_registers_[n / 2].get_bits() >> kShift));
}
void FrameDescription::SetCallerPc(unsigned offset, intptr_t value) {
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) { pc_ = pc; }
} // namespace internal
} // namespace v8
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