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platform_system_core/libunwindstack/tests/DwarfSectionImplTest.cpp
Christopher Ferris 92acaac8c7 Refactor the DwarfSection classes. 
Modify the code for the no header sections because it turns out that
it is not okay to assume that the fdes are non-overlapping. It's necessary
to read the fdes in order and match as you go.

Modify the code so that it only reads until it finds the given pc rather than
reading all of the cie/fde entries at once.

Rewrote the tests to verify the new behavior.

Bug: 68998033
Bug: 110235461

Test: Ran libbacktrace/libunwindstack unit tests.
Test: Unwind the mediaserver process on a walleye and verify it
Test: unwinds properly.

Change-Id: I7bb59d1db72c13fa34caa9735ec34c1a60e20ed2
2018-06-27 14:52:21 -07:00

588 lines
20 KiB
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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 <unwindstack/DwarfSection.h>
#include "DwarfEncoding.h"
#include "LogFake.h"
#include "MemoryFake.h"
#include "RegsFake.h"
namespace unwindstack {
template <typename TypeParam>
class TestDwarfSectionImpl : public DwarfSectionImpl<TypeParam> {
public:
TestDwarfSectionImpl(Memory* memory) : DwarfSectionImpl<TypeParam>(memory) {}
virtual ~TestDwarfSectionImpl() = default;
bool Init(uint64_t, uint64_t, uint64_t) override { return false; }
void GetFdes(std::vector<const DwarfFde*>*) override {}
const DwarfFde* GetFdeFromPc(uint64_t) override { return nullptr; }
uint64_t GetCieOffsetFromFde32(uint32_t) { return 0; }
uint64_t GetCieOffsetFromFde64(uint64_t) { return 0; }
uint64_t AdjustPcFromFde(uint64_t) override { return 0; }
void TestSetCachedCieLocRegs(uint64_t offset, const dwarf_loc_regs_t& loc_regs) {
this->cie_loc_regs_[offset] = loc_regs;
}
void TestClearCachedCieLocRegs() { this->cie_loc_regs_.clear(); }
void TestClearError() { this->last_error_.code = DWARF_ERROR_NONE; }
};
template <typename TypeParam>
class DwarfSectionImplTest : public ::testing::Test {
protected:
void SetUp() override {
memory_.Clear();
section_ = new TestDwarfSectionImpl<TypeParam>(&memory_);
ResetLogs();
}
void TearDown() override { delete section_; }
MemoryFake memory_;
TestDwarfSectionImpl<TypeParam>* section_ = nullptr;
};
TYPED_TEST_CASE_P(DwarfSectionImplTest);
// NOTE: All test class variables need to be referenced as this->.
TYPED_TEST_P(DwarfSectionImplTest, GetCieFromOffset_fail_should_not_cache) {
ASSERT_TRUE(this->section_->GetCieFromOffset(0x4000) == nullptr);
EXPECT_EQ(DWARF_ERROR_MEMORY_INVALID, this->section_->LastErrorCode());
EXPECT_EQ(0x4000U, this->section_->LastErrorAddress());
this->section_->TestClearError();
ASSERT_TRUE(this->section_->GetCieFromOffset(0x4000) == nullptr);
EXPECT_EQ(DWARF_ERROR_MEMORY_INVALID, this->section_->LastErrorCode());
EXPECT_EQ(0x4000U, this->section_->LastErrorAddress());
}
TYPED_TEST_P(DwarfSectionImplTest, GetFdeFromOffset_fail_should_not_cache) {
ASSERT_TRUE(this->section_->GetFdeFromOffset(0x4000) == nullptr);
EXPECT_EQ(DWARF_ERROR_MEMORY_INVALID, this->section_->LastErrorCode());
EXPECT_EQ(0x4000U, this->section_->LastErrorAddress());
this->section_->TestClearError();
ASSERT_TRUE(this->section_->GetFdeFromOffset(0x4000) == nullptr);
EXPECT_EQ(DWARF_ERROR_MEMORY_INVALID, this->section_->LastErrorCode());
EXPECT_EQ(0x4000U, this->section_->LastErrorAddress());
}
TYPED_TEST_P(DwarfSectionImplTest, Eval_cfa_expr_eval_fail) {
DwarfCie cie{.version = 3, .return_address_register = 5};
RegsImplFake<TypeParam> regs(10);
dwarf_loc_regs_t loc_regs;
regs.set_pc(0x100);
regs.set_sp(0x2000);
regs[5] = 0x20;
regs[9] = 0x3000;
loc_regs[CFA_REG] = DwarfLocation{DWARF_LOCATION_VAL_EXPRESSION, {0x2, 0x5002}};
bool finished;
ASSERT_FALSE(this->section_->Eval(&cie, &this->memory_, loc_regs, &regs, &finished));
EXPECT_EQ(DWARF_ERROR_MEMORY_INVALID, this->section_->LastErrorCode());
EXPECT_EQ(0x5000U, this->section_->LastErrorAddress());
}
TYPED_TEST_P(DwarfSectionImplTest, Eval_cfa_expr_no_stack) {
DwarfCie cie{.version = 3, .return_address_register = 5};
RegsImplFake<TypeParam> regs(10);
dwarf_loc_regs_t loc_regs;
regs.set_pc(0x100);
regs.set_sp(0x2000);
regs[5] = 0x20;
regs[9] = 0x3000;
this->memory_.SetMemory(0x5000, std::vector<uint8_t>{0x96, 0x96, 0x96});
loc_regs[CFA_REG] = DwarfLocation{DWARF_LOCATION_VAL_EXPRESSION, {0x2, 0x5002}};
bool finished;
ASSERT_FALSE(this->section_->Eval(&cie, &this->memory_, loc_regs, &regs, &finished));
EXPECT_EQ(DWARF_ERROR_ILLEGAL_STATE, this->section_->LastErrorCode());
}
TYPED_TEST_P(DwarfSectionImplTest, Eval_cfa_expr) {
DwarfCie cie{.version = 3, .return_address_register = 5};
RegsImplFake<TypeParam> regs(10);
dwarf_loc_regs_t loc_regs;
regs.set_pc(0x100);
regs.set_sp(0x2000);
regs[5] = 0x20;
regs[9] = 0x3000;
this->memory_.SetMemory(0x5000, std::vector<uint8_t>{0x0c, 0x00, 0x00, 0x00, 0x80});
TypeParam cfa_value = 0x12345;
this->memory_.SetMemory(0x80000000, &cfa_value, sizeof(cfa_value));
loc_regs[CFA_REG] = DwarfLocation{DWARF_LOCATION_EXPRESSION, {0x4, 0x5004}};
bool finished;
ASSERT_FALSE(this->section_->Eval(&cie, &this->memory_, loc_regs, &regs, &finished));
EXPECT_EQ(DWARF_ERROR_ILLEGAL_VALUE, this->section_->LastErrorCode());
}
TYPED_TEST_P(DwarfSectionImplTest, Eval_cfa_val_expr) {
DwarfCie cie{.version = 3, .return_address_register = 5};
RegsImplFake<TypeParam> regs(10);
dwarf_loc_regs_t loc_regs;
regs.set_pc(0x100);
regs.set_sp(0x2000);
regs[5] = 0x20;
regs[9] = 0x3000;
this->memory_.SetMemory(0x5000, std::vector<uint8_t>{0x0c, 0x00, 0x00, 0x00, 0x80});
loc_regs[CFA_REG] = DwarfLocation{DWARF_LOCATION_VAL_EXPRESSION, {0x4, 0x5004}};
bool finished;
ASSERT_TRUE(this->section_->Eval(&cie, &this->memory_, loc_regs, &regs, &finished));
ASSERT_FALSE(finished);
EXPECT_EQ(0x80000000U, regs.sp());
EXPECT_EQ(0x20U, regs.pc());
}
TYPED_TEST_P(DwarfSectionImplTest, Eval_cfa_expr_is_register) {
DwarfCie cie{.version = 3, .return_address_register = 5};
RegsImplFake<TypeParam> regs(10);
dwarf_loc_regs_t loc_regs;
regs.set_pc(0x100);
regs.set_sp(0x2000);
regs[5] = 0x20;
regs[9] = 0x3000;
this->memory_.SetMemory(0x5000, std::vector<uint8_t>{0x50, 0x96, 0x96});
loc_regs[CFA_REG] = DwarfLocation{DWARF_LOCATION_VAL_EXPRESSION, {0x2, 0x5002}};
bool finished;
ASSERT_FALSE(this->section_->Eval(&cie, &this->memory_, loc_regs, &regs, &finished));
EXPECT_EQ(DWARF_ERROR_NOT_IMPLEMENTED, this->section_->LastErrorCode());
}
TYPED_TEST_P(DwarfSectionImplTest, Eval_bad_regs) {
DwarfCie cie{.return_address_register = 60};
RegsImplFake<TypeParam> regs(10);
dwarf_loc_regs_t loc_regs;
bool finished;
ASSERT_FALSE(this->section_->Eval(&cie, &this->memory_, loc_regs, &regs, &finished));
EXPECT_EQ(DWARF_ERROR_ILLEGAL_VALUE, this->section_->LastErrorCode());
}
TYPED_TEST_P(DwarfSectionImplTest, Eval_no_cfa) {
DwarfCie cie{.return_address_register = 5};
RegsImplFake<TypeParam> regs(10);
dwarf_loc_regs_t loc_regs;
bool finished;
ASSERT_FALSE(this->section_->Eval(&cie, &this->memory_, loc_regs, &regs, &finished));
EXPECT_EQ(DWARF_ERROR_CFA_NOT_DEFINED, this->section_->LastErrorCode());
}
TYPED_TEST_P(DwarfSectionImplTest, Eval_cfa_bad) {
DwarfCie cie{.return_address_register = 5};
RegsImplFake<TypeParam> regs(10);
dwarf_loc_regs_t loc_regs;
loc_regs[CFA_REG] = DwarfLocation{DWARF_LOCATION_REGISTER, {20, 0}};
bool finished;
ASSERT_FALSE(this->section_->Eval(&cie, &this->memory_, loc_regs, &regs, &finished));
EXPECT_EQ(DWARF_ERROR_ILLEGAL_VALUE, this->section_->LastErrorCode());
this->section_->TestClearError();
loc_regs.erase(CFA_REG);
loc_regs[CFA_REG] = DwarfLocation{DWARF_LOCATION_INVALID, {0, 0}};
ASSERT_FALSE(this->section_->Eval(&cie, &this->memory_, loc_regs, &regs, &finished));
EXPECT_EQ(DWARF_ERROR_ILLEGAL_VALUE, this->section_->LastErrorCode());
this->section_->TestClearError();
loc_regs.erase(CFA_REG);
loc_regs[CFA_REG] = DwarfLocation{DWARF_LOCATION_OFFSET, {0, 0}};
ASSERT_FALSE(this->section_->Eval(&cie, &this->memory_, loc_regs, &regs, &finished));
EXPECT_EQ(DWARF_ERROR_ILLEGAL_VALUE, this->section_->LastErrorCode());
this->section_->TestClearError();
loc_regs.erase(CFA_REG);
loc_regs[CFA_REG] = DwarfLocation{DWARF_LOCATION_VAL_OFFSET, {0, 0}};
ASSERT_FALSE(this->section_->Eval(&cie, &this->memory_, loc_regs, &regs, &finished));
EXPECT_EQ(DWARF_ERROR_ILLEGAL_VALUE, this->section_->LastErrorCode());
}
TYPED_TEST_P(DwarfSectionImplTest, Eval_cfa_register_prev) {
DwarfCie cie{.return_address_register = 5};
RegsImplFake<TypeParam> regs(10);
dwarf_loc_regs_t loc_regs;
regs.set_pc(0x100);
regs.set_sp(0x2000);
regs[5] = 0x20;
regs[9] = 0x3000;
loc_regs[CFA_REG] = DwarfLocation{DWARF_LOCATION_REGISTER, {9, 0}};
bool finished;
ASSERT_TRUE(this->section_->Eval(&cie, &this->memory_, loc_regs, &regs, &finished));
EXPECT_FALSE(finished);
EXPECT_EQ(0x20U, regs.pc());
EXPECT_EQ(0x3000U, regs.sp());
}
TYPED_TEST_P(DwarfSectionImplTest, Eval_cfa_register_from_value) {
DwarfCie cie{.return_address_register = 5};
RegsImplFake<TypeParam> regs(10);
dwarf_loc_regs_t loc_regs;
regs.set_pc(0x100);
regs.set_sp(0x2000);
regs[5] = 0x20;
regs[6] = 0x4000;
regs[9] = 0x3000;
loc_regs[CFA_REG] = DwarfLocation{DWARF_LOCATION_REGISTER, {6, 0}};
bool finished;
ASSERT_TRUE(this->section_->Eval(&cie, &this->memory_, loc_regs, &regs, &finished));
EXPECT_FALSE(finished);
EXPECT_EQ(0x20U, regs.pc());
EXPECT_EQ(0x4000U, regs.sp());
}
TYPED_TEST_P(DwarfSectionImplTest, Eval_double_indirection) {
DwarfCie cie{.return_address_register = 5};
RegsImplFake<TypeParam> regs(10);
dwarf_loc_regs_t loc_regs;
regs.set_pc(0x100);
regs.set_sp(0x2000);
regs[1] = 0x100;
regs[3] = 0x300;
regs[8] = 0x10;
loc_regs[CFA_REG] = DwarfLocation{DWARF_LOCATION_REGISTER, {8, 0}};
loc_regs[1] = DwarfLocation{DWARF_LOCATION_REGISTER, {3, 1}};
loc_regs[9] = DwarfLocation{DWARF_LOCATION_REGISTER, {1, 2}};
bool finished;
ASSERT_TRUE(this->section_->Eval(&cie, &this->memory_, loc_regs, &regs, &finished));
EXPECT_EQ(0x301U, regs[1]);
EXPECT_EQ(0x300U, regs[3]);
EXPECT_EQ(0x10U, regs[8]);
EXPECT_EQ(0x102U, regs[9]);
}
TYPED_TEST_P(DwarfSectionImplTest, Eval_register_reference_chain) {
DwarfCie cie{.return_address_register = 5};
RegsImplFake<TypeParam> regs(10);
dwarf_loc_regs_t loc_regs;
regs.set_pc(0x100);
regs.set_sp(0x2000);
regs[0] = 0x10;
regs[1] = 0x20;
regs[2] = 0x30;
regs[3] = 0x40;
regs[4] = 0x50;
regs[5] = 0x60;
regs[8] = 0x20;
loc_regs[CFA_REG] = DwarfLocation{DWARF_LOCATION_REGISTER, {8, 0}};
loc_regs[1] = DwarfLocation{DWARF_LOCATION_REGISTER, {0, 1}};
loc_regs[2] = DwarfLocation{DWARF_LOCATION_REGISTER, {1, 2}};
loc_regs[3] = DwarfLocation{DWARF_LOCATION_REGISTER, {2, 3}};
loc_regs[4] = DwarfLocation{DWARF_LOCATION_REGISTER, {3, 4}};
loc_regs[5] = DwarfLocation{DWARF_LOCATION_REGISTER, {4, 5}};
bool finished;
ASSERT_TRUE(this->section_->Eval(&cie, &this->memory_, loc_regs, &regs, &finished));
EXPECT_EQ(0x10U, regs[0]);
EXPECT_EQ(0x11U, regs[1]);
EXPECT_EQ(0x22U, regs[2]);
EXPECT_EQ(0x33U, regs[3]);
EXPECT_EQ(0x44U, regs[4]);
EXPECT_EQ(0x55U, regs[5]);
EXPECT_EQ(0x20U, regs[8]);
}
TYPED_TEST_P(DwarfSectionImplTest, Eval_dex_pc) {
DwarfCie cie{.return_address_register = 5};
RegsImplFake<TypeParam> regs(10);
dwarf_loc_regs_t loc_regs;
regs.set_pc(0x100);
regs.set_sp(0x2000);
regs[0] = 0x10;
regs[8] = 0x20;
loc_regs[CFA_REG] = DwarfLocation{DWARF_LOCATION_REGISTER, {8, 0}};
loc_regs[1] = DwarfLocation{DWARF_LOCATION_VAL_EXPRESSION, {0x8, 0x5008}};
this->memory_.SetMemory(0x5000, std::vector<uint8_t>{0x0c, 'D', 'E', 'X', '1', 0x13, 0x08, 0x11});
bool finished;
ASSERT_TRUE(this->section_->Eval(&cie, &this->memory_, loc_regs, &regs, &finished));
EXPECT_EQ(0x10U, regs[0]);
EXPECT_EQ(0x20U, regs[8]);
EXPECT_EQ(0x11U, regs.dex_pc());
}
TYPED_TEST_P(DwarfSectionImplTest, Eval_invalid_register) {
DwarfCie cie{.return_address_register = 5};
RegsImplFake<TypeParam> regs(10);
dwarf_loc_regs_t loc_regs;
regs.set_pc(0x100);
regs.set_sp(0x2000);
regs[8] = 0x10;
loc_regs[CFA_REG] = DwarfLocation{DWARF_LOCATION_REGISTER, {8, 0}};
loc_regs[1] = DwarfLocation{DWARF_LOCATION_REGISTER, {10, 0}};
bool finished;
ASSERT_FALSE(this->section_->Eval(&cie, &this->memory_, loc_regs, &regs, &finished));
EXPECT_EQ(DWARF_ERROR_ILLEGAL_VALUE, this->section_->LastErrorCode());
}
TYPED_TEST_P(DwarfSectionImplTest, Eval_different_reg_locations) {
DwarfCie cie{.return_address_register = 5};
RegsImplFake<TypeParam> regs(10);
dwarf_loc_regs_t loc_regs;
if (sizeof(TypeParam) == sizeof(uint64_t)) {
this->memory_.SetData64(0x2150, 0x12345678abcdef00ULL);
} else {
this->memory_.SetData32(0x2150, 0x12345678);
}
regs.set_pc(0x100);
regs.set_sp(0x2000);
regs[3] = 0x234;
regs[5] = 0x10;
regs[8] = 0x2100;
loc_regs[CFA_REG] = DwarfLocation{DWARF_LOCATION_REGISTER, {8, 0}};
loc_regs[1] = DwarfLocation{DWARF_LOCATION_VAL_OFFSET, {0x100, 0}};
loc_regs[2] = DwarfLocation{DWARF_LOCATION_OFFSET, {0x50, 0}};
loc_regs[3] = DwarfLocation{DWARF_LOCATION_UNDEFINED, {0, 0}};
bool finished;
ASSERT_TRUE(this->section_->Eval(&cie, &this->memory_, loc_regs, &regs, &finished));
EXPECT_FALSE(finished);
EXPECT_EQ(0x10U, regs.pc());
EXPECT_EQ(0x2100U, regs.sp());
EXPECT_EQ(0x2200U, regs[1]);
EXPECT_EQ(0x234U, regs[3]);
if (sizeof(TypeParam) == sizeof(uint64_t)) {
EXPECT_EQ(0x12345678abcdef00ULL, regs[2]);
} else {
EXPECT_EQ(0x12345678U, regs[2]);
}
}
TYPED_TEST_P(DwarfSectionImplTest, Eval_return_address_undefined) {
DwarfCie cie{.return_address_register = 5};
RegsImplFake<TypeParam> regs(10);
dwarf_loc_regs_t loc_regs;
regs.set_pc(0x100);
regs.set_sp(0x2000);
regs[5] = 0x20;
regs[8] = 0x10;
loc_regs[CFA_REG] = DwarfLocation{DWARF_LOCATION_REGISTER, {8, 0}};
loc_regs[5] = DwarfLocation{DWARF_LOCATION_UNDEFINED, {0, 0}};
bool finished;
ASSERT_TRUE(this->section_->Eval(&cie, &this->memory_, loc_regs, &regs, &finished));
EXPECT_TRUE(finished);
EXPECT_EQ(0U, regs.pc());
EXPECT_EQ(0x10U, regs.sp());
}
TYPED_TEST_P(DwarfSectionImplTest, Eval_pc_zero) {
DwarfCie cie{.return_address_register = 5};
RegsImplFake<TypeParam> regs(10);
dwarf_loc_regs_t loc_regs;
regs.set_pc(0x100);
regs.set_sp(0x2000);
regs[5] = 0;
regs[8] = 0x10;
loc_regs[CFA_REG] = DwarfLocation{DWARF_LOCATION_REGISTER, {8, 0}};
bool finished;
ASSERT_TRUE(this->section_->Eval(&cie, &this->memory_, loc_regs, &regs, &finished));
EXPECT_TRUE(finished);
EXPECT_EQ(0U, regs.pc());
EXPECT_EQ(0x10U, regs.sp());
}
TYPED_TEST_P(DwarfSectionImplTest, Eval_return_address) {
DwarfCie cie{.return_address_register = 5};
RegsImplFake<TypeParam> regs(10);
dwarf_loc_regs_t loc_regs;
regs.set_pc(0x100);
regs.set_sp(0x2000);
regs[5] = 0x20;
regs[8] = 0x10;
loc_regs[CFA_REG] = DwarfLocation{DWARF_LOCATION_REGISTER, {8, 0}};
bool finished;
ASSERT_TRUE(this->section_->Eval(&cie, &this->memory_, loc_regs, &regs, &finished));
EXPECT_FALSE(finished);
EXPECT_EQ(0x20U, regs.pc());
EXPECT_EQ(0x10U, regs.sp());
}
TYPED_TEST_P(DwarfSectionImplTest, Eval_ignore_large_reg_loc) {
DwarfCie cie{.return_address_register = 5};
RegsImplFake<TypeParam> regs(10);
dwarf_loc_regs_t loc_regs;
regs.set_pc(0x100);
regs.set_sp(0x2000);
regs[5] = 0x20;
regs[8] = 0x10;
loc_regs[CFA_REG] = DwarfLocation{DWARF_LOCATION_REGISTER, {8, 0}};
// This should not result in any errors.
loc_regs[20] = DwarfLocation{DWARF_LOCATION_REGISTER, {8, 0}};
bool finished;
ASSERT_TRUE(this->section_->Eval(&cie, &this->memory_, loc_regs, &regs, &finished));
EXPECT_FALSE(finished);
EXPECT_EQ(0x20U, regs.pc());
EXPECT_EQ(0x10U, regs.sp());
}
TYPED_TEST_P(DwarfSectionImplTest, Eval_reg_expr) {
DwarfCie cie{.version = 3, .return_address_register = 5};
RegsImplFake<TypeParam> regs(10);
dwarf_loc_regs_t loc_regs;
regs.set_pc(0x100);
regs.set_sp(0x2000);
regs[8] = 0x3000;
this->memory_.SetMemory(0x5000, std::vector<uint8_t>{0x0c, 0x00, 0x00, 0x00, 0x80});
TypeParam cfa_value = 0x12345;
this->memory_.SetMemory(0x80000000, &cfa_value, sizeof(cfa_value));
loc_regs[CFA_REG] = DwarfLocation{DWARF_LOCATION_REGISTER, {8, 0}};
loc_regs[5] = DwarfLocation{DWARF_LOCATION_EXPRESSION, {0x4, 0x5004}};
bool finished;
ASSERT_TRUE(this->section_->Eval(&cie, &this->memory_, loc_regs, &regs, &finished));
EXPECT_FALSE(finished);
EXPECT_EQ(0x3000U, regs.sp());
EXPECT_EQ(0x12345U, regs.pc());
}
TYPED_TEST_P(DwarfSectionImplTest, Eval_reg_val_expr) {
DwarfCie cie{.version = 3, .return_address_register = 5};
RegsImplFake<TypeParam> regs(10);
dwarf_loc_regs_t loc_regs;
regs.set_pc(0x100);
regs.set_sp(0x2000);
regs[8] = 0x3000;
this->memory_.SetMemory(0x5000, std::vector<uint8_t>{0x0c, 0x00, 0x00, 0x00, 0x80});
loc_regs[CFA_REG] = DwarfLocation{DWARF_LOCATION_REGISTER, {8, 0}};
loc_regs[5] = DwarfLocation{DWARF_LOCATION_VAL_EXPRESSION, {0x4, 0x5004}};
bool finished;
ASSERT_TRUE(this->section_->Eval(&cie, &this->memory_, loc_regs, &regs, &finished));
EXPECT_FALSE(finished);
EXPECT_EQ(0x3000U, regs.sp());
EXPECT_EQ(0x80000000U, regs.pc());
}
TYPED_TEST_P(DwarfSectionImplTest, GetCfaLocationInfo_cie_not_cached) {
DwarfCie cie{};
cie.cfa_instructions_offset = 0x3000;
cie.cfa_instructions_end = 0x3002;
DwarfFde fde{};
fde.cie = &cie;
fde.cie_offset = 0x8000;
fde.cfa_instructions_offset = 0x6000;
fde.cfa_instructions_end = 0x6002;
this->memory_.SetMemory(0x3000, std::vector<uint8_t>{0x09, 0x02, 0x01});
this->memory_.SetMemory(0x6000, std::vector<uint8_t>{0x09, 0x04, 0x03});
dwarf_loc_regs_t loc_regs;
ASSERT_TRUE(this->section_->GetCfaLocationInfo(0x100, &fde, &loc_regs));
ASSERT_EQ(2U, loc_regs.size());
auto entry = loc_regs.find(2);
ASSERT_NE(entry, loc_regs.end());
ASSERT_EQ(DWARF_LOCATION_REGISTER, entry->second.type);
ASSERT_EQ(1U, entry->second.values[0]);
entry = loc_regs.find(4);
ASSERT_NE(entry, loc_regs.end());
ASSERT_EQ(DWARF_LOCATION_REGISTER, entry->second.type);
ASSERT_EQ(3U, entry->second.values[0]);
}
TYPED_TEST_P(DwarfSectionImplTest, GetCfaLocationInfo_cie_cached) {
DwarfCie cie{};
cie.cfa_instructions_offset = 0x3000;
cie.cfa_instructions_end = 0x3002;
DwarfFde fde{};
fde.cie = &cie;
fde.cie_offset = 0x8000;
fde.cfa_instructions_offset = 0x6000;
fde.cfa_instructions_end = 0x6002;
dwarf_loc_regs_t cie_loc_regs;
cie_loc_regs[6] = DwarfLocation{DWARF_LOCATION_REGISTER, {4, 0}};
this->section_->TestSetCachedCieLocRegs(0x8000, cie_loc_regs);
this->memory_.SetMemory(0x6000, std::vector<uint8_t>{0x09, 0x04, 0x03});
dwarf_loc_regs_t loc_regs;
ASSERT_TRUE(this->section_->GetCfaLocationInfo(0x100, &fde, &loc_regs));
ASSERT_EQ(2U, loc_regs.size());
auto entry = loc_regs.find(6);
ASSERT_NE(entry, loc_regs.end());
ASSERT_EQ(DWARF_LOCATION_REGISTER, entry->second.type);
ASSERT_EQ(4U, entry->second.values[0]);
entry = loc_regs.find(4);
ASSERT_NE(entry, loc_regs.end());
ASSERT_EQ(DWARF_LOCATION_REGISTER, entry->second.type);
ASSERT_EQ(3U, entry->second.values[0]);
}
TYPED_TEST_P(DwarfSectionImplTest, Log) {
DwarfCie cie{};
cie.cfa_instructions_offset = 0x5000;
cie.cfa_instructions_end = 0x5001;
DwarfFde fde{};
fde.cie = &cie;
fde.cfa_instructions_offset = 0x6000;
fde.cfa_instructions_end = 0x6001;
this->memory_.SetMemory(0x5000, std::vector<uint8_t>{0x00});
this->memory_.SetMemory(0x6000, std::vector<uint8_t>{0xc2});
ASSERT_TRUE(this->section_->Log(2, 0x1000, &fde));
ASSERT_EQ(
"4 unwind DW_CFA_nop\n"
"4 unwind Raw Data: 0x00\n"
"4 unwind DW_CFA_restore register(2)\n"
"4 unwind Raw Data: 0xc2\n",
GetFakeLogPrint());
ASSERT_EQ("", GetFakeLogBuf());
}
REGISTER_TYPED_TEST_CASE_P(DwarfSectionImplTest, GetCieFromOffset_fail_should_not_cache,
GetFdeFromOffset_fail_should_not_cache, Eval_cfa_expr_eval_fail,
Eval_cfa_expr_no_stack, Eval_cfa_expr_is_register, Eval_cfa_expr,
Eval_cfa_val_expr, Eval_bad_regs, Eval_no_cfa, Eval_cfa_bad,
Eval_cfa_register_prev, Eval_cfa_register_from_value,
Eval_double_indirection, Eval_register_reference_chain, Eval_dex_pc,
Eval_invalid_register, Eval_different_reg_locations,
Eval_return_address_undefined, Eval_pc_zero, Eval_return_address,
Eval_ignore_large_reg_loc, Eval_reg_expr, Eval_reg_val_expr,
GetCfaLocationInfo_cie_not_cached, GetCfaLocationInfo_cie_cached, Log);
typedef ::testing::Types<uint32_t, uint64_t> DwarfSectionImplTestTypes;
INSTANTIATE_TYPED_TEST_CASE_P(, DwarfSectionImplTest, DwarfSectionImplTestTypes);
} // namespace unwindstack
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