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/*
* Copyright (C) 2016 The Android Open Source Project
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
#include <stdint.h>
#include <gtest/gtest.h>
#include <unwindstack/DwarfError.h>
#include "DwarfEhFrame.h"
#include "DwarfEncoding.h"
#include "LogFake.h"
#include "MemoryFake.h"
namespace unwindstack {
template <typename TypeParam>
class DwarfEhFrameTest : public ::testing::Test {
protected:
void SetUp() override {
memory_.Clear();
eh_frame_ = new DwarfEhFrame<TypeParam>(&memory_);
ResetLogs();
}
void TearDown() override { delete eh_frame_; }
MemoryFake memory_;
DwarfEhFrame<TypeParam>* eh_frame_ = nullptr;
};
TYPED_TEST_CASE_P(DwarfEhFrameTest);
// NOTE: All test class variables need to be referenced as this->.
// Only verify different cie/fde format. All other DwarfSection corner
// cases are tested in DwarfDebugFrameTest.cpp.
TYPED_TEST_P(DwarfEhFrameTest, GetFdeCieFromOffset32) {
// CIE 32 information.
this->memory_.SetData32(0x5000, 0xfc);
// Indicates this is a cie for eh_frame.
this->memory_.SetData32(0x5004, 0);
this->memory_.SetMemory(0x5008, std::vector<uint8_t>{1, '\0', 16, 32, 1});
// FDE 32 information.
this->memory_.SetData32(0x5100, 0xfc);
this->memory_.SetData32(0x5104, 0x104);
this->memory_.SetData32(0x5108, 0x1500);
this->memory_.SetData32(0x510c, 0x200);
const DwarfFde* fde = this->eh_frame_->GetFdeFromOffset(0x5100);
ASSERT_TRUE(fde != nullptr);
EXPECT_EQ(0x5000U, fde->cie_offset);
EXPECT_EQ(0x5110U, fde->cfa_instructions_offset);
EXPECT_EQ(0x5200U, fde->cfa_instructions_end);
EXPECT_EQ(0x6608U, fde->pc_start);
EXPECT_EQ(0x6808U, fde->pc_end);
EXPECT_EQ(0U, fde->lsda_address);
const DwarfCie* cie = fde->cie;
ASSERT_TRUE(cie != nullptr);
EXPECT_EQ(1U, cie->version);
EXPECT_EQ(DW_EH_PE_sdata4, cie->fde_address_encoding);
EXPECT_EQ(DW_EH_PE_omit, cie->lsda_encoding);
EXPECT_EQ(0U, cie->segment_size);
EXPECT_EQ('\0', cie->augmentation_string[0]);
EXPECT_EQ(0U, cie->personality_handler);
EXPECT_EQ(0x500dU, cie->cfa_instructions_offset);
EXPECT_EQ(0x5100U, cie->cfa_instructions_end);
EXPECT_EQ(16U, cie->code_alignment_factor);
EXPECT_EQ(32U, cie->data_alignment_factor);
EXPECT_EQ(1U, cie->return_address_register);
}
TYPED_TEST_P(DwarfEhFrameTest, GetFdeCieFromOffset64) {
// CIE 64 information.
this->memory_.SetData32(0x5000, 0xffffffff);
this->memory_.SetData64(0x5004, 0xfc);
// Indicates this is a cie for eh_frame.
this->memory_.SetData64(0x500c, 0);
this->memory_.SetMemory(0x5014, std::vector<uint8_t>{1, '\0', 16, 32, 1});
// FDE 64 information.
this->memory_.SetData32(0x5100, 0xffffffff);
this->memory_.SetData64(0x5104, 0xfc);
this->memory_.SetData64(0x510c, 0x10c);
this->memory_.SetData64(0x5114, 0x1500);
this->memory_.SetData64(0x511c, 0x200);
const DwarfFde* fde = this->eh_frame_->GetFdeFromOffset(0x5100);
ASSERT_TRUE(fde != nullptr);
EXPECT_EQ(0x5000U, fde->cie_offset);
EXPECT_EQ(0x5124U, fde->cfa_instructions_offset);
EXPECT_EQ(0x5208U, fde->cfa_instructions_end);
EXPECT_EQ(0x6618U, fde->pc_start);
EXPECT_EQ(0x6818U, fde->pc_end);
EXPECT_EQ(0U, fde->lsda_address);
const DwarfCie* cie = fde->cie;
ASSERT_TRUE(cie != nullptr);
EXPECT_EQ(1U, cie->version);
EXPECT_EQ(DW_EH_PE_sdata8, cie->fde_address_encoding);
EXPECT_EQ(DW_EH_PE_omit, cie->lsda_encoding);
EXPECT_EQ(0U, cie->segment_size);
EXPECT_EQ('\0', cie->augmentation_string[0]);
EXPECT_EQ(0U, cie->personality_handler);
EXPECT_EQ(0x5019U, cie->cfa_instructions_offset);
EXPECT_EQ(0x5108U, cie->cfa_instructions_end);
EXPECT_EQ(16U, cie->code_alignment_factor);
EXPECT_EQ(32U, cie->data_alignment_factor);
EXPECT_EQ(1U, cie->return_address_register);
}
REGISTER_TYPED_TEST_CASE_P(DwarfEhFrameTest, GetFdeCieFromOffset32, GetFdeCieFromOffset64);
typedef ::testing::Types<uint32_t, uint64_t> DwarfEhFrameTestTypes;
INSTANTIATE_TYPED_TEST_CASE_P(, DwarfEhFrameTest, DwarfEhFrameTestTypes);
} // namespace unwindstack
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