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(kArm, "krait", &error_msg));
28 ASSERT_TRUE(krait_features.get() != nullptr) << error_msg;
29
30 ASSERT_EQ(krait_features->GetInstructionSet(), 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(kArm, "kryo", &error_msg));
40 ASSERT_TRUE(kryo_features.get() != nullptr) << error_msg;
41
42 ASSERT_EQ(kryo_features->GetInstructionSet(), 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(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(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(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(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(), 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(), 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