1 // Copyright 2011 The Chromium Authors
2 // Use of this source code is governed by a BSD-style license that can be
3 // found in the LICENSE file.
11 #include "base/bind.h"
12 #include "base/memory/ptr_util.h"
13 #include "courgette/assembly_program.h"
14 #include "courgette/courgette.h"
15 #include "courgette/encoded_program.h"
16 #include "courgette/image_utils.h"
17 #include "courgette/streams.h"
19 #include "testing/gtest/include/gtest/gtest.h"
25 class AdjustmentMethodTest : public testing::Test {
36 // Returns one of two similar simple programs. These differ only in Label
37 // assignment, so it is possible to make them look identical.
38 std::unique_ptr<AssemblyProgram> MakeProgram(int kind) const {
39 auto prog = std::make_unique<AssemblyProgram>(EXE_WIN_32_X86, 0x00400000);
41 RVA kRvaA = 0x00410000;
42 RVA kRvaB = 0x00410004;
44 std::vector<RVA> abs32_rvas;
45 abs32_rvas.push_back(kRvaA);
46 abs32_rvas.push_back(kRvaB);
47 std::vector<RVA> rel32_rvas; // Stub.
49 TrivialRvaVisitor abs32_visitor(abs32_rvas);
50 TrivialRvaVisitor rel32_visitor(rel32_rvas);
51 prog->PrecomputeLabels(&abs32_visitor, &rel32_visitor);
53 Label* labelA = prog->FindAbs32Label(kRvaA);
54 Label* labelB = prog->FindAbs32Label(kRvaB);
56 InstructionGenerator gen = base::BindRepeating(
57 [](Label* labelA, Label* labelB,
58 InstructionReceptor* receptor) -> CheckBool {
59 EXPECT_TRUE(receptor->EmitAbs32(labelA));
60 EXPECT_TRUE(receptor->EmitAbs32(labelA));
61 EXPECT_TRUE(receptor->EmitAbs32(labelB));
62 EXPECT_TRUE(receptor->EmitAbs32(labelA));
63 EXPECT_TRUE(receptor->EmitAbs32(labelA));
64 EXPECT_TRUE(receptor->EmitAbs32(labelB));
69 EXPECT_TRUE(prog->AnnotateLabels(gen));
70 EXPECT_EQ(6U, prog->abs32_label_annotations().size());
71 EXPECT_EQ(0U, prog->rel32_label_annotations().size());
80 prog->AssignRemainingIndexes();
85 std::unique_ptr<AssemblyProgram> MakeProgramA() const {
86 return MakeProgram(0);
88 std::unique_ptr<AssemblyProgram> MakeProgramB() const {
89 return MakeProgram(1);
92 // Returns a string that is the serialized version of |program| annotations.
93 std::string Serialize(AssemblyProgram* program) const {
94 std::ostringstream oss;
95 for (const Label* label : program->abs32_label_annotations())
96 oss << "(" << label->rva_ << "," << label->index_ << ")";
98 for (const Label* label : program->rel32_label_annotations())
99 oss << "(" << label->rva_ << "," << label->index_ << ")";
101 EXPECT_GT(oss.str().length(), 1U); // Ensure results are non-trivial.
106 void AdjustmentMethodTest::Test1() const {
107 std::unique_ptr<AssemblyProgram> prog1 = MakeProgramA();
108 std::unique_ptr<AssemblyProgram> prog2 = MakeProgramB();
109 std::string s1 = Serialize(prog1.get());
110 std::string s2 = Serialize(prog2.get());
112 // Don't use EXPECT_EQ because strings are unprintable.
113 EXPECT_FALSE(s1 == s2); // Unadjusted A and B differ.
115 std::unique_ptr<AssemblyProgram> prog5 = MakeProgramA();
116 std::unique_ptr<AssemblyProgram> prog6 = MakeProgramB();
117 Status can_adjust = Adjust(*prog5, prog6.get());
118 EXPECT_EQ(C_OK, can_adjust);
119 std::string s5 = Serialize(prog5.get());
120 std::string s6 = Serialize(prog6.get());
122 EXPECT_TRUE(s1 == s5); // Adjustment did not change A (prog5)
123 EXPECT_TRUE(s5 == s6); // Adjustment did change B into A
126 TEST_F(AdjustmentMethodTest, All) {
132 } // namespace courgette