| /* |
| * Copyright (C) 2018 The Android Open Source Project |
| * |
| * Licensed under the Apache License, Version 2.0 (the "License"); |
| * you may not use this file except in compliance with the License. |
| * You may obtain a copy of the License at |
| * |
| * http://www.apache.org/licenses/LICENSE-2.0 |
| * |
| * Unless required by applicable law or agreed to in writing, software |
| * distributed under the License is distributed on an "AS IS" BASIS, |
| * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
| * See the License for the specific language governing permissions and |
| * limitations under the License. |
| */ |
| |
| #include "android-base/logging.h" |
| #include "dex_builder.h" |
| |
| #include <fstream> |
| #include <string> |
| |
| // Adding tests here requires changes in several other places. See README.md in |
| // the view_compiler directory for more information. |
| |
| using namespace startop::dex; |
| using namespace std; |
| |
| void GenerateTrivialDexFile(const string& outdir) { |
| DexBuilder dex_file; |
| |
| ClassBuilder cbuilder{dex_file.MakeClass("android.startop.test.testcases.Trivial")}; |
| cbuilder.set_source_file("dex_testcase_generator.cc#GenerateTrivialDexFile"); |
| |
| slicer::MemView image{dex_file.CreateImage()}; |
| std::ofstream out_file(outdir + "/trivial.dex"); |
| out_file.write(image.ptr<const char>(), image.size()); |
| } |
| |
| // Generates test cases that test around 1 instruction. |
| void GenerateSimpleTestCases(const string& outdir) { |
| DexBuilder dex_file; |
| |
| ClassBuilder cbuilder{dex_file.MakeClass("android.startop.test.testcases.SimpleTests")}; |
| cbuilder.set_source_file("dex_testcase_generator.cc#GenerateSimpleTestCases"); |
| |
| // int return5() { return 5; } |
| auto return5{cbuilder.CreateMethod("return5", Prototype{TypeDescriptor::Int()})}; |
| { |
| Value r{return5.MakeRegister()}; |
| return5.BuildConst4(r, 5); |
| return5.BuildReturn(r); |
| } |
| return5.Encode(); |
| |
| // int return5() { return 5; } |
| auto integer_type{TypeDescriptor::FromClassname("java.lang.Integer")}; |
| auto returnInteger5{cbuilder.CreateMethod("returnInteger5", Prototype{integer_type})}; |
| [&](MethodBuilder& method) { |
| Value five{method.MakeRegister()}; |
| method.BuildConst4(five, 5); |
| Value object{method.MakeRegister()}; |
| method.BuildNew( |
| object, integer_type, Prototype{TypeDescriptor::Void(), TypeDescriptor::Int()}, five); |
| method.BuildReturn(object, /*is_object=*/true); |
| }(returnInteger5); |
| returnInteger5.Encode(); |
| |
| // // int returnParam(int x) { return x; } |
| auto returnParam{cbuilder.CreateMethod("returnParam", |
| Prototype{TypeDescriptor::Int(), TypeDescriptor::Int()})}; |
| returnParam.BuildReturn(Value::Parameter(0)); |
| returnParam.Encode(); |
| |
| // int returnStringLength(String x) { return x.length(); } |
| auto string_type{TypeDescriptor::FromClassname("java.lang.String")}; |
| MethodDeclData string_length{ |
| dex_file.GetOrDeclareMethod(string_type, "length", Prototype{TypeDescriptor::Int()})}; |
| |
| auto returnStringLength{ |
| cbuilder.CreateMethod("returnStringLength", Prototype{TypeDescriptor::Int(), string_type})}; |
| { |
| Value result = returnStringLength.MakeRegister(); |
| returnStringLength.AddInstruction( |
| Instruction::InvokeVirtual(string_length.id, result, Value::Parameter(0))); |
| returnStringLength.BuildReturn(result); |
| } |
| returnStringLength.Encode(); |
| |
| // int returnIfZero(int x) { if (x == 0) { return 5; } else { return 3; } } |
| MethodBuilder returnIfZero{cbuilder.CreateMethod( |
| "returnIfZero", Prototype{TypeDescriptor::Int(), TypeDescriptor::Int()})}; |
| { |
| Value resultIfZero{returnIfZero.MakeRegister()}; |
| Value else_target{returnIfZero.MakeLabel()}; |
| returnIfZero.AddInstruction(Instruction::OpWithArgs( |
| Instruction::Op::kBranchEqz, /*dest=*/{}, Value::Parameter(0), else_target)); |
| // else branch |
| returnIfZero.BuildConst4(resultIfZero, 3); |
| returnIfZero.AddInstruction( |
| Instruction::OpWithArgs(Instruction::Op::kReturn, /*dest=*/{}, resultIfZero)); |
| // then branch |
| returnIfZero.AddInstruction( |
| Instruction::OpWithArgs(Instruction::Op::kBindLabel, /*dest=*/{}, else_target)); |
| returnIfZero.BuildConst4(resultIfZero, 5); |
| returnIfZero.AddInstruction( |
| Instruction::OpWithArgs(Instruction::Op::kReturn, /*dest=*/{}, resultIfZero)); |
| } |
| returnIfZero.Encode(); |
| |
| // Make sure backwards branches work too. |
| // |
| // Pseudo code for test: |
| // { |
| // zero = 0; |
| // result = 1; |
| // if (zero == 0) goto B; |
| // A: |
| // return result; |
| // B: |
| // result = 2; |
| // if (zero == 0) goto A; |
| // result = 3; |
| // return result; |
| // } |
| // If it runs correctly, this test should return 2. |
| MethodBuilder backwardsBranch{ |
| cbuilder.CreateMethod("backwardsBranch", Prototype{TypeDescriptor::Int()})}; |
| [](MethodBuilder& method) { |
| Value zero = method.MakeRegister(); |
| Value result = method.MakeRegister(); |
| Value labelA = method.MakeLabel(); |
| Value labelB = method.MakeLabel(); |
| method.BuildConst4(zero, 0); |
| method.BuildConst4(result, 1); |
| method.AddInstruction( |
| Instruction::OpWithArgs(Instruction::Op::kBranchEqz, /*dest=*/{}, zero, labelB)); |
| |
| method.AddInstruction( |
| Instruction::OpWithArgs(Instruction::Op::kBindLabel, /*dest=*/{}, labelA)); |
| method.BuildReturn(result); |
| |
| method.AddInstruction( |
| Instruction::OpWithArgs(Instruction::Op::kBindLabel, /*dest=*/{}, labelB)); |
| method.BuildConst4(result, 2); |
| method.AddInstruction( |
| Instruction::OpWithArgs(Instruction::Op::kBranchEqz, /*dest=*/{}, zero, labelA)); |
| |
| method.BuildConst4(result, 3); |
| method.BuildReturn(result); |
| }(backwardsBranch); |
| backwardsBranch.Encode(); |
| |
| // Test that we can make a null value. Basically: |
| // |
| // public static String returnNull() { return null; } |
| MethodBuilder returnNull{cbuilder.CreateMethod("returnNull", Prototype{string_type})}; |
| [](MethodBuilder& method) { |
| Value zero = method.MakeRegister(); |
| method.BuildConst4(zero, 0); |
| method.BuildReturn(zero, /*is_object=*/true); |
| }(returnNull); |
| returnNull.Encode(); |
| |
| // Test that we can make String literals. Basically: |
| // |
| // public static String makeString() { return "Hello, World!"; } |
| MethodBuilder makeString{cbuilder.CreateMethod("makeString", Prototype{string_type})}; |
| [](MethodBuilder& method) { |
| Value string = method.MakeRegister(); |
| method.BuildConstString(string, "Hello, World!"); |
| method.BuildReturn(string, /*is_object=*/true); |
| }(makeString); |
| makeString.Encode(); |
| |
| // Make sure strings are sorted correctly. |
| // |
| // int returnStringIfZeroAB(int x) { if (x == 0) { return "a"; } else { return "b"; } } |
| MethodBuilder returnStringIfZeroAB{ |
| cbuilder.CreateMethod("returnStringIfZeroAB", Prototype{string_type, TypeDescriptor::Int()})}; |
| [&](MethodBuilder& method) { |
| Value resultIfZero{method.MakeRegister()}; |
| Value else_target{method.MakeLabel()}; |
| method.AddInstruction(Instruction::OpWithArgs( |
| Instruction::Op::kBranchEqz, /*dest=*/{}, Value::Parameter(0), else_target)); |
| // else branch |
| method.BuildConstString(resultIfZero, "b"); |
| method.AddInstruction( |
| Instruction::OpWithArgs(Instruction::Op::kReturnObject, /*dest=*/{}, resultIfZero)); |
| // then branch |
| method.AddInstruction( |
| Instruction::OpWithArgs(Instruction::Op::kBindLabel, /*dest=*/{}, else_target)); |
| method.BuildConstString(resultIfZero, "a"); |
| method.AddInstruction( |
| Instruction::OpWithArgs(Instruction::Op::kReturnObject, /*dest=*/{}, resultIfZero)); |
| method.Encode(); |
| }(returnStringIfZeroAB); |
| // int returnStringIfZeroAB(int x) { if (x == 0) { return "b"; } else { return "a"; } } |
| MethodBuilder returnStringIfZeroBA{ |
| cbuilder.CreateMethod("returnStringIfZeroBA", Prototype{string_type, TypeDescriptor::Int()})}; |
| [&](MethodBuilder& method) { |
| Value resultIfZero{method.MakeRegister()}; |
| Value else_target{method.MakeLabel()}; |
| method.AddInstruction(Instruction::OpWithArgs( |
| Instruction::Op::kBranchEqz, /*dest=*/{}, Value::Parameter(0), else_target)); |
| // else branch |
| method.BuildConstString(resultIfZero, "a"); |
| method.AddInstruction( |
| Instruction::OpWithArgs(Instruction::Op::kReturnObject, /*dest=*/{}, resultIfZero)); |
| // then branch |
| method.AddInstruction( |
| Instruction::OpWithArgs(Instruction::Op::kBindLabel, /*dest=*/{}, else_target)); |
| method.BuildConstString(resultIfZero, "b"); |
| method.AddInstruction( |
| Instruction::OpWithArgs(Instruction::Op::kReturnObject, /*dest=*/{}, resultIfZero)); |
| method.Encode(); |
| }(returnStringIfZeroBA); |
| |
| slicer::MemView image{dex_file.CreateImage()}; |
| std::ofstream out_file(outdir + "/simple.dex"); |
| out_file.write(image.ptr<const char>(), image.size()); |
| } |
| |
| int main(int argc, char** argv) { |
| CHECK_EQ(argc, 2); |
| |
| string outdir = argv[1]; |
| |
| GenerateTrivialDexFile(outdir); |
| GenerateSimpleTestCases(outdir); |
| } |