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/*
* Copyright (C) 2020 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 "OfflineUnwinder.h"
#include "OfflineUnwinder_impl.h"
#include <android-base/parseint.h>
#include <unwindstack/RegsArm64.h>
#include <gtest/gtest.h>
using namespace simpleperf;
bool CheckUnwindMaps(UnwindMaps& maps, const MapSet& map_set) {
if (maps.Total() != map_set.maps.size()) {
return false;
}
std::shared_ptr<unwindstack::MapInfo> prev_real_map;
for (auto& info : maps) {
if (info == nullptr || map_set.maps.find(info->start()) == map_set.maps.end()) {
return false;
}
if (prev_real_map != nullptr && prev_real_map->name() == info->name() &&
prev_real_map != info->GetPrevRealMap()) {
return false;
}
if (!info->IsBlank()) {
prev_real_map = info;
}
}
return true;
}
// @CddTest = 6.1/C-0-2
TEST(OfflineUnwinder, UnwindMaps) {
// 1. Create fake map entries.
std::unique_ptr<Dso> fake_dso = Dso::CreateDso(DSO_UNKNOWN_FILE, "unknown");
std::vector<MapEntry> map_entries;
for (size_t i = 0; i < 10; i++) {
map_entries.emplace_back(i, 1, i, fake_dso.get(), false);
}
// 2. Init with empty maps.
MapSet map_set;
UnwindMaps maps;
maps.UpdateMaps(map_set);
ASSERT_TRUE(CheckUnwindMaps(maps, map_set));
// 3. Add maps starting from even addr.
map_set.version = 1;
for (size_t i = 0; i < map_entries.size(); i += 2) {
map_set.maps.insert(std::make_pair(map_entries[i].start_addr, &map_entries[i]));
}
maps.UpdateMaps(map_set);
ASSERT_TRUE(CheckUnwindMaps(maps, map_set));
// 4. Add maps starting from odd addr.
map_set.version = 2;
for (size_t i = 1; i < 10; i += 2) {
map_set.maps.insert(std::make_pair(map_entries[i].start_addr, &map_entries[i]));
}
maps.UpdateMaps(map_set);
ASSERT_TRUE(CheckUnwindMaps(maps, map_set));
// 5. Remove maps starting from even addr.
map_set.version = 3;
for (size_t i = 0; i < 10; i += 2) {
map_set.maps.erase(map_entries[i].start_addr);
}
maps.UpdateMaps(map_set);
ASSERT_TRUE(CheckUnwindMaps(maps, map_set));
// 6. Remove all maps.
map_set.version = 4;
map_set.maps.clear();
maps.UpdateMaps(map_set);
ASSERT_TRUE(CheckUnwindMaps(maps, map_set));
}
// @CddTest = 6.1/C-0-2
TEST(OfflineUnwinder, CollectMetaInfo) {
std::unordered_map<std::string, std::string> info_map;
OfflineUnwinder::CollectMetaInfo(&info_map);
if (auto it = info_map.find(OfflineUnwinder::META_KEY_ARM64_PAC_MASK); it != info_map.end()) {
uint64_t arm64_pack_mask;
ASSERT_TRUE(android::base::ParseUint(it->second, &arm64_pack_mask));
ASSERT_NE(arm64_pack_mask, 0);
}
}
// @CddTest = 6.1/C-0-2
TEST(OfflineUnwinder, ARM64PackMask) {
std::unordered_map<std::string, std::string> info_map;
info_map[OfflineUnwinder::META_KEY_ARM64_PAC_MASK] = "0xff00000000";
std::unique_ptr<OfflineUnwinderImpl> unwinder(new OfflineUnwinderImpl(false));
unwinder->LoadMetaInfo(info_map);
RegSet fake_regs(0, 0, nullptr);
fake_regs.arch = ARCH_ARM64;
unwindstack::Regs* regs = unwinder->GetBacktraceRegs(fake_regs);
ASSERT_TRUE(regs != nullptr);
auto& arm64 = *static_cast<unwindstack::RegsArm64*>(regs);
arm64.SetPseudoRegister(unwindstack::Arm64Reg::ARM64_PREG_RA_SIGN_STATE, 1);
arm64.set_pc(0xffccccccccULL);
ASSERT_EQ(arm64.pc(), 0xccccccccULL);
}
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