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 ARMv7 processor.
50 std::unique_ptr<const InstructionSetFeatures> generic_features(
51 InstructionSetFeatures::FromVariant(InstructionSet::kArm, "generic", &error_msg));
52 ASSERT_TRUE(generic_features.get() != nullptr) << error_msg;
53
54 EXPECT_TRUE(generic_features->Equals(generic_features.get()));
55 EXPECT_FALSE(generic_features->Equals(krait_features.get()));
56 EXPECT_FALSE(krait_features->Equals(generic_features.get()));
57 EXPECT_FALSE(generic_features->AsArmInstructionSetFeatures()->HasDivideInstruction());
58 EXPECT_FALSE(generic_features->AsArmInstructionSetFeatures()->HasAtomicLdrdAndStrd());
59 EXPECT_STREQ("-div,-atomic_ldrd_strd,-armv8a", generic_features->GetFeatureString().c_str());
60 EXPECT_EQ(generic_features->AsBitmap(), 0U);
61
62 // ARM6 is not a supported architecture variant.
63 std::unique_ptr<const InstructionSetFeatures> arm6_features(
64 InstructionSetFeatures::FromVariant(InstructionSet::kArm, "arm6", &error_msg));
65 EXPECT_TRUE(arm6_features.get() == nullptr);
66 EXPECT_NE(error_msg.size(), 0U);
67 }
68
TEST(ArmInstructionSetFeaturesTest,ArmAddFeaturesFromString)69 TEST(ArmInstructionSetFeaturesTest, ArmAddFeaturesFromString) {
70 std::string error_msg;
71 std::unique_ptr<const InstructionSetFeatures> base_features(
72 InstructionSetFeatures::FromVariant(InstructionSet::kArm, "generic", &error_msg));
73 ASSERT_TRUE(base_features.get() != nullptr) << error_msg;
74
75 // Build features for a 32-bit ARM with LPAE and div processor.
76 std::unique_ptr<const InstructionSetFeatures> krait_features(
77 base_features->AddFeaturesFromString("atomic_ldrd_strd,div", &error_msg));
78 ASSERT_TRUE(krait_features.get() != nullptr) << error_msg;
79
80 ASSERT_EQ(krait_features->GetInstructionSet(), InstructionSet::kArm);
81 EXPECT_TRUE(krait_features->Equals(krait_features.get()));
82 EXPECT_TRUE(krait_features->AsArmInstructionSetFeatures()->HasDivideInstruction());
83 EXPECT_TRUE(krait_features->AsArmInstructionSetFeatures()->HasAtomicLdrdAndStrd());
84 EXPECT_STREQ("div,atomic_ldrd_strd,-armv8a", krait_features->GetFeatureString().c_str());
85 EXPECT_EQ(krait_features->AsBitmap(), 3U);
86
87 // Build features for a 32-bit ARM with LPAE and div processor.
88 std::unique_ptr<const InstructionSetFeatures> kryo_features(
89 base_features->AddFeaturesFromString("atomic_ldrd_strd,div", &error_msg));
90 ASSERT_TRUE(kryo_features.get() != nullptr) << error_msg;
91
92 ASSERT_EQ(kryo_features->GetInstructionSet(), InstructionSet::kArm);
93 EXPECT_TRUE(kryo_features->Equals(krait_features.get()));
94 EXPECT_TRUE(kryo_features->AsArmInstructionSetFeatures()->HasDivideInstruction());
95 EXPECT_TRUE(kryo_features->AsArmInstructionSetFeatures()->HasAtomicLdrdAndStrd());
96 EXPECT_STREQ("div,atomic_ldrd_strd,-armv8a", kryo_features->GetFeatureString().c_str());
97 EXPECT_EQ(kryo_features->AsBitmap(), 3U);
98
99 // Build features for a 32-bit ARM processor with LPAE and div flipped.
100 std::unique_ptr<const InstructionSetFeatures> denver_features(
101 base_features->AddFeaturesFromString("div,atomic_ldrd_strd,armv8a", &error_msg));
102 ASSERT_TRUE(denver_features.get() != nullptr) << error_msg;
103
104 EXPECT_TRUE(denver_features->Equals(denver_features.get()));
105 EXPECT_FALSE(denver_features->Equals(krait_features.get()));
106 EXPECT_TRUE(denver_features->HasAtLeast(krait_features.get()));
107 EXPECT_FALSE(krait_features->Equals(denver_features.get()));
108 EXPECT_TRUE(denver_features->AsArmInstructionSetFeatures()->HasDivideInstruction());
109 EXPECT_TRUE(denver_features->AsArmInstructionSetFeatures()->HasAtomicLdrdAndStrd());
110 EXPECT_STREQ("div,atomic_ldrd_strd,armv8a", denver_features->GetFeatureString().c_str());
111 EXPECT_EQ(denver_features->AsBitmap(), 7U);
112
113 // Build features for a 32-bit default ARM processor.
114 std::unique_ptr<const InstructionSetFeatures> generic_features(
115 base_features->AddFeaturesFromString("default", &error_msg));
116 ASSERT_TRUE(generic_features.get() != nullptr) << error_msg;
117
118 EXPECT_TRUE(generic_features->Equals(generic_features.get()));
119 EXPECT_FALSE(generic_features->Equals(krait_features.get()));
120 EXPECT_FALSE(krait_features->Equals(generic_features.get()));
121 EXPECT_FALSE(generic_features->AsArmInstructionSetFeatures()->HasDivideInstruction());
122 EXPECT_FALSE(generic_features->AsArmInstructionSetFeatures()->HasAtomicLdrdAndStrd());
123 EXPECT_STREQ("-div,-atomic_ldrd_strd,-armv8a", generic_features->GetFeatureString().c_str());
124 EXPECT_EQ(generic_features->AsBitmap(), 0U);
125 }
126
127 } // namespace art
128