1 /*
2  * Copyright (C) 2014 The Android Open Source Project
3  *
4  * Licensed under the Apache License, Version 2.0 (the "License");
5  * you may not use this file except in compliance with the License.
6  * You may obtain a copy of the License at
7  *
8  *      http://www.apache.org/licenses/LICENSE-2.0
9  *
10  * Unless required by applicable law or agreed to in writing, software
11  * distributed under the License is distributed on an "AS IS" BASIS,
12  * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
13  * See the License for the specific language governing permissions and
14  * limitations under the License.
15  */
16 
17 #include "instruction_set_features_arm.h"
18 
19 #include "gtest/gtest.h"
20 
21 namespace art {
22 
TEST(ArmInstructionSetFeaturesTest,ArmFeaturesFromVariant)23 TEST(ArmInstructionSetFeaturesTest, ArmFeaturesFromVariant) {
24   // Build features for a 32-bit ARM krait processor.
25   std::string error_msg;
26   std::unique_ptr<const InstructionSetFeatures> krait_features(
27       InstructionSetFeatures::FromVariant(InstructionSet::kArm, "krait", &error_msg));
28   ASSERT_TRUE(krait_features.get() != nullptr) << error_msg;
29 
30   ASSERT_EQ(krait_features->GetInstructionSet(), InstructionSet::kArm);
31   EXPECT_TRUE(krait_features->Equals(krait_features.get()));
32   EXPECT_TRUE(krait_features->AsArmInstructionSetFeatures()->HasDivideInstruction());
33   EXPECT_TRUE(krait_features->AsArmInstructionSetFeatures()->HasAtomicLdrdAndStrd());
34   EXPECT_STREQ("div,atomic_ldrd_strd,-armv8a", krait_features->GetFeatureString().c_str());
35   EXPECT_EQ(krait_features->AsBitmap(), 3U);
36 
37   // Build features for a 32-bit ARM kryo processor.
38   std::unique_ptr<const InstructionSetFeatures> kryo_features(
39       InstructionSetFeatures::FromVariant(InstructionSet::kArm, "kryo", &error_msg));
40   ASSERT_TRUE(kryo_features.get() != nullptr) << error_msg;
41 
42   ASSERT_EQ(kryo_features->GetInstructionSet(), InstructionSet::kArm);
43   EXPECT_TRUE(kryo_features->Equals(kryo_features.get()));
44   EXPECT_TRUE(kryo_features->AsArmInstructionSetFeatures()->HasDivideInstruction());
45   EXPECT_TRUE(kryo_features->AsArmInstructionSetFeatures()->HasAtomicLdrdAndStrd());
46   EXPECT_STREQ("div,atomic_ldrd_strd,armv8a", kryo_features->GetFeatureString().c_str());
47   EXPECT_EQ(kryo_features->AsBitmap(), 7U);
48 
49   // Build features for a 32-bit ARM denver processor.
50   std::unique_ptr<const InstructionSetFeatures> denver_features(
51       InstructionSetFeatures::FromVariant(InstructionSet::kArm, "denver", &error_msg));
52   ASSERT_TRUE(denver_features.get() != nullptr) << error_msg;
53 
54   EXPECT_TRUE(denver_features->Equals(denver_features.get()));
55   EXPECT_TRUE(denver_features->HasAtLeast(krait_features.get()));
56   EXPECT_FALSE(krait_features->Equals(denver_features.get()));
57   EXPECT_FALSE(krait_features->HasAtLeast(denver_features.get()));
58   EXPECT_TRUE(denver_features->AsArmInstructionSetFeatures()->HasDivideInstruction());
59   EXPECT_TRUE(denver_features->AsArmInstructionSetFeatures()->HasAtomicLdrdAndStrd());
60   EXPECT_STREQ("div,atomic_ldrd_strd,armv8a", denver_features->GetFeatureString().c_str());
61   EXPECT_EQ(denver_features->AsBitmap(), 7U);
62 
63   // Build features for a 32-bit ARMv7 processor.
64   std::unique_ptr<const InstructionSetFeatures> generic_features(
65       InstructionSetFeatures::FromVariant(InstructionSet::kArm, "generic", &error_msg));
66   ASSERT_TRUE(generic_features.get() != nullptr) << error_msg;
67 
68   EXPECT_TRUE(generic_features->Equals(generic_features.get()));
69   EXPECT_FALSE(generic_features->Equals(krait_features.get()));
70   EXPECT_FALSE(krait_features->Equals(generic_features.get()));
71   EXPECT_FALSE(generic_features->AsArmInstructionSetFeatures()->HasDivideInstruction());
72   EXPECT_FALSE(generic_features->AsArmInstructionSetFeatures()->HasAtomicLdrdAndStrd());
73   EXPECT_STREQ("-div,-atomic_ldrd_strd,-armv8a", generic_features->GetFeatureString().c_str());
74   EXPECT_EQ(generic_features->AsBitmap(), 0U);
75 
76   // ARM6 is not a supported architecture variant.
77   std::unique_ptr<const InstructionSetFeatures> arm6_features(
78       InstructionSetFeatures::FromVariant(InstructionSet::kArm, "arm6", &error_msg));
79   EXPECT_TRUE(arm6_features.get() == nullptr);
80   EXPECT_NE(error_msg.size(), 0U);
81 }
82 
TEST(ArmInstructionSetFeaturesTest,ArmAddFeaturesFromString)83 TEST(ArmInstructionSetFeaturesTest, ArmAddFeaturesFromString) {
84   std::string error_msg;
85   std::unique_ptr<const InstructionSetFeatures> base_features(
86       InstructionSetFeatures::FromVariant(InstructionSet::kArm, "generic", &error_msg));
87   ASSERT_TRUE(base_features.get() != nullptr) << error_msg;
88 
89   // Build features for a 32-bit ARM with LPAE and div processor.
90   std::unique_ptr<const InstructionSetFeatures> krait_features(
91       base_features->AddFeaturesFromString("atomic_ldrd_strd,div", &error_msg));
92   ASSERT_TRUE(krait_features.get() != nullptr) << error_msg;
93 
94   ASSERT_EQ(krait_features->GetInstructionSet(), InstructionSet::kArm);
95   EXPECT_TRUE(krait_features->Equals(krait_features.get()));
96   EXPECT_TRUE(krait_features->AsArmInstructionSetFeatures()->HasDivideInstruction());
97   EXPECT_TRUE(krait_features->AsArmInstructionSetFeatures()->HasAtomicLdrdAndStrd());
98   EXPECT_STREQ("div,atomic_ldrd_strd,-armv8a", krait_features->GetFeatureString().c_str());
99   EXPECT_EQ(krait_features->AsBitmap(), 3U);
100 
101   // Build features for a 32-bit ARM with LPAE and div processor.
102   std::unique_ptr<const InstructionSetFeatures> kryo_features(
103       base_features->AddFeaturesFromString("atomic_ldrd_strd,div", &error_msg));
104   ASSERT_TRUE(kryo_features.get() != nullptr) << error_msg;
105 
106   ASSERT_EQ(kryo_features->GetInstructionSet(), InstructionSet::kArm);
107   EXPECT_TRUE(kryo_features->Equals(krait_features.get()));
108   EXPECT_TRUE(kryo_features->AsArmInstructionSetFeatures()->HasDivideInstruction());
109   EXPECT_TRUE(kryo_features->AsArmInstructionSetFeatures()->HasAtomicLdrdAndStrd());
110   EXPECT_STREQ("div,atomic_ldrd_strd,-armv8a", kryo_features->GetFeatureString().c_str());
111   EXPECT_EQ(kryo_features->AsBitmap(), 3U);
112 
113   // Build features for a 32-bit ARM processor with LPAE and div flipped.
114   std::unique_ptr<const InstructionSetFeatures> denver_features(
115       base_features->AddFeaturesFromString("div,atomic_ldrd_strd,armv8a", &error_msg));
116   ASSERT_TRUE(denver_features.get() != nullptr) << error_msg;
117 
118   EXPECT_TRUE(denver_features->Equals(denver_features.get()));
119   EXPECT_FALSE(denver_features->Equals(krait_features.get()));
120   EXPECT_TRUE(denver_features->HasAtLeast(krait_features.get()));
121   EXPECT_FALSE(krait_features->Equals(denver_features.get()));
122   EXPECT_TRUE(denver_features->AsArmInstructionSetFeatures()->HasDivideInstruction());
123   EXPECT_TRUE(denver_features->AsArmInstructionSetFeatures()->HasAtomicLdrdAndStrd());
124   EXPECT_STREQ("div,atomic_ldrd_strd,armv8a", denver_features->GetFeatureString().c_str());
125   EXPECT_EQ(denver_features->AsBitmap(), 7U);
126 
127   // Build features for a 32-bit default ARM processor.
128   std::unique_ptr<const InstructionSetFeatures> generic_features(
129       base_features->AddFeaturesFromString("default", &error_msg));
130   ASSERT_TRUE(generic_features.get() != nullptr) << error_msg;
131 
132   EXPECT_TRUE(generic_features->Equals(generic_features.get()));
133   EXPECT_FALSE(generic_features->Equals(krait_features.get()));
134   EXPECT_FALSE(krait_features->Equals(generic_features.get()));
135   EXPECT_FALSE(generic_features->AsArmInstructionSetFeatures()->HasDivideInstruction());
136   EXPECT_FALSE(generic_features->AsArmInstructionSetFeatures()->HasAtomicLdrdAndStrd());
137   EXPECT_STREQ("-div,-atomic_ldrd_strd,-armv8a", generic_features->GetFeatureString().c_str());
138   EXPECT_EQ(generic_features->AsBitmap(), 0U);
139 }
140 
141 }  // namespace art
142