135 lines
3.3 KiB
C++
135 lines
3.3 KiB
C++
/*
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* Copyright (C) 2011 The Android Open Source Project
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*
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*/
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#ifndef ART_RUNTIME_VERIFIER_INSTRUCTION_FLAGS_H_
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#define ART_RUNTIME_VERIFIER_INSTRUCTION_FLAGS_H_
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#include <stdint.h>
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#include <string>
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#include "base/macros.h"
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namespace art {
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namespace verifier {
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class InstructionFlags final {
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public:
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InstructionFlags() : flags_(0) {}
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void SetIsOpcode() {
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flags_ |= 1 << kOpcode;
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}
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void ClearIsOpcode() {
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flags_ &= ~(1 << kOpcode);
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}
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bool IsOpcode() const {
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return (flags_ & (1 << kOpcode)) != 0;
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}
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void SetInTry() {
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flags_ |= 1 << kInTry;
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}
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void ClearInTry() {
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flags_ &= ~(1 << kInTry);
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}
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bool IsInTry() const {
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return (flags_ & (1 << kInTry)) != 0;
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}
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void SetBranchTarget() {
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flags_ |= 1 << kBranchTarget;
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}
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void ClearBranchTarget() {
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flags_ &= ~(1 << kBranchTarget);
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}
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bool IsBranchTarget() const {
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return (flags_ & (1 << kBranchTarget)) != 0;
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}
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void SetCompileTimeInfoPoint() {
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flags_ |= 1 << kCompileTimeInfoPoint;
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}
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void ClearCompileTimeInfoPoint() {
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flags_ &= ~(1 << kCompileTimeInfoPoint);
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}
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bool IsCompileTimeInfoPoint() const {
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return (flags_ & (1 << kCompileTimeInfoPoint)) != 0;
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}
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void SetVisited() {
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flags_ |= 1 << kVisited;
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}
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void ClearVisited() {
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flags_ &= ~(1 << kVisited);
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}
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bool IsVisited() const {
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return (flags_ & (1 << kVisited)) != 0;
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}
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void SetChanged() {
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flags_ |= 1 << kChanged;
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}
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void ClearChanged() {
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flags_ &= ~(1 << kChanged);
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}
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bool IsChanged() const {
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return (flags_ & (1 << kChanged)) != 0;
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}
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bool IsVisitedOrChanged() const {
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return IsVisited() || IsChanged();
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}
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void SetReturn() {
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flags_ |= 1 << kReturn;
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}
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void ClearReturn() {
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flags_ &= ~(1 << kReturn);
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}
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bool IsReturn() const {
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return (flags_ & (1 << kReturn)) != 0;
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}
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std::string ToString() const;
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private:
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enum {
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// The instruction has been visited and unless IsChanged() verified.
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kVisited = 0,
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// Register type information flowing into the instruction changed and so the instruction must be
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// reprocessed.
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kChanged = 1,
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// The item at this location is an opcode.
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kOpcode = 2,
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// Instruction is contained within a try region.
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kInTry = 3,
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// Instruction is the target of a branch (ie the start of a basic block).
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kBranchTarget = 4,
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// Location of interest to the compiler for GC maps and verifier based method sharpening.
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kCompileTimeInfoPoint = 5,
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// A return instruction.
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kReturn = 6,
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};
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uint8_t flags_;
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};
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static_assert(sizeof(InstructionFlags) == sizeof(uint8_t),
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"Size of InstructionFlags not equal to uint8_t");
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} // namespace verifier
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} // namespace art
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#endif // ART_RUNTIME_VERIFIER_INSTRUCTION_FLAGS_H_
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