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| 1 // Copyright 2014 The Crashpad Authors. All rights reserved. | 1 // Copyright 2014 The Crashpad Authors. All rights reserved. |
| 2 // | 2 // |
| 3 // Licensed under the Apache License, Version 2.0 (the "License"); | 3 // Licensed under the Apache License, Version 2.0 (the "License"); |
| 4 // you may not use this file except in compliance with the License. | 4 // you may not use this file except in compliance with the License. |
| 5 // You may obtain a copy of the License at | 5 // You may obtain a copy of the License at |
| 6 // | 6 // |
| 7 // http://www.apache.org/licenses/LICENSE-2.0 | 7 // http://www.apache.org/licenses/LICENSE-2.0 |
| 8 // | 8 // |
| 9 // Unless required by applicable law or agreed to in writing, software | 9 // Unless required by applicable law or agreed to in writing, software |
| 10 // distributed under the License is distributed on an "AS IS" BASIS, | 10 // distributed under the License is distributed on an "AS IS" BASIS, |
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| 88 return context->uts.ts64.__rsp; | 88 return context->uts.ts64.__rsp; |
| 89 #endif | 89 #endif |
| 90 } | 90 } |
| 91 | 91 |
| 92 void TestCaptureContext() { | 92 void TestCaptureContext() { |
| 93 NativeCPUContext context_1; | 93 NativeCPUContext context_1; |
| 94 CaptureContext(&context_1); | 94 CaptureContext(&context_1); |
| 95 | 95 |
| 96 { | 96 { |
| 97 SCOPED_TRACE("context_1"); | 97 SCOPED_TRACE("context_1"); |
| 98 SanityCheckContext(&context_1); | 98 ASSERT_NO_FATAL_FAILURE(SanityCheckContext(&context_1)); |
| 99 } | |
| 100 if (testing::Test::HasFatalFailure()) { | |
| 101 return; | |
| 102 } | 99 } |
| 103 | 100 |
| 104 // The program counter reference value is this function’s address. The | 101 // The program counter reference value is this function’s address. The |
| 105 // captured program counter should be slightly greater than or equal to the | 102 // captured program counter should be slightly greater than or equal to the |
| 106 // reference program counter. | 103 // reference program counter. |
| 107 const uintptr_t kReferencePC = | 104 const uintptr_t kReferencePC = |
| 108 reinterpret_cast<uintptr_t>(TestCaptureContext); | 105 reinterpret_cast<uintptr_t>(TestCaptureContext); |
| 109 uintptr_t pc = ProgramCounterFromContext(&context_1); | 106 uintptr_t pc = ProgramCounterFromContext(&context_1); |
| 110 EXPECT_LT(pc - kReferencePC, 64u); | 107 EXPECT_LT(pc - kReferencePC, 64u); |
| 111 | 108 |
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| 127 EXPECT_LT(kReferenceSP - sp, 512u); | 124 EXPECT_LT(kReferenceSP - sp, 512u); |
| 128 | 125 |
| 129 // Capture the context again, expecting that the stack pointer stays the same | 126 // Capture the context again, expecting that the stack pointer stays the same |
| 130 // and the program counter increases. Strictly speaking, there’s no guarantee | 127 // and the program counter increases. Strictly speaking, there’s no guarantee |
| 131 // that these conditions will hold, although they do for known compilers even | 128 // that these conditions will hold, although they do for known compilers even |
| 132 // under typical optimization. | 129 // under typical optimization. |
| 133 CaptureContext(&context_2); | 130 CaptureContext(&context_2); |
| 134 | 131 |
| 135 { | 132 { |
| 136 SCOPED_TRACE("context_2"); | 133 SCOPED_TRACE("context_2"); |
| 137 SanityCheckContext(&context_2); | 134 ASSERT_NO_FATAL_FAILURE(SanityCheckContext(&context_2)); |
| 138 } | |
| 139 if (testing::Test::HasFatalFailure()) { | |
| 140 return; | |
| 141 } | 135 } |
| 142 | 136 |
| 143 EXPECT_EQ(sp, StackPointerFromContext(&context_2)); | 137 EXPECT_EQ(sp, StackPointerFromContext(&context_2)); |
| 144 EXPECT_GT(ProgramCounterFromContext(&context_2), pc); | 138 EXPECT_GT(ProgramCounterFromContext(&context_2), pc); |
| 145 } | 139 } |
| 146 | 140 |
| 147 TEST(CaptureContextMac, CaptureContext) { | 141 TEST(CaptureContextMac, CaptureContext) { |
| 148 TestCaptureContext(); | 142 ASSERT_NO_FATAL_FAILURE(TestCaptureContext()); |
| 149 if (Test::HasFatalFailure()) { | |
| 150 return; | |
| 151 } | |
| 152 } | 143 } |
| 153 | 144 |
| 154 } // namespace | 145 } // namespace |
| 155 } // namespace test | 146 } // namespace test |
| 156 } // namespace crashpad | 147 } // namespace crashpad |
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