Init .gnu_debugdata in GetElf().
- Modify the tests to share some code for the generation of the elf data.
- Move the gnu_debugdata files into a separate directory.
- Add tests for GetElf().
- Move the CreateMemory() tests and the GetElf() tests into separate files.
Bug: 23762183
Test: New unit tests pass.
Change-Id: Ie3380296bb49753c2ac8801cfa11f93d6ff7121d
diff --git a/libunwindstack/tests/MapInfoGetElfTest.cpp b/libunwindstack/tests/MapInfoGetElfTest.cpp
new file mode 100644
index 0000000..fc36cc6
--- /dev/null
+++ b/libunwindstack/tests/MapInfoGetElfTest.cpp
@@ -0,0 +1,140 @@
+/*
+ * 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 <elf.h>
+#include <errno.h>
+#include <signal.h>
+#include <string.h>
+#include <sys/mman.h>
+#include <sys/ptrace.h>
+#include <sys/types.h>
+#include <unistd.h>
+
+#include <memory>
+#include <vector>
+
+#include <android-base/file.h>
+#include <android-base/test_utils.h>
+#include <gtest/gtest.h>
+
+#include "Elf.h"
+#include "ElfTestUtils.h"
+#include "MapInfo.h"
+
+class MapInfoGetElfTest : public ::testing::Test {
+ protected:
+ void SetUp() override {
+ map_ = mmap(nullptr, kMapSize, PROT_READ | PROT_WRITE, MAP_PRIVATE | MAP_ANONYMOUS, -1, 0);
+ ASSERT_NE(MAP_FAILED, map_);
+
+ uint64_t start = reinterpret_cast<uint64_t>(map_);
+ info_.reset(new MapInfo{.start = start, .end = start + 1024, .offset = 0, .name = ""});
+ }
+
+ void TearDown() override { munmap(map_, kMapSize); }
+
+ const size_t kMapSize = 4096;
+
+ void* map_ = nullptr;
+ std::unique_ptr<MapInfo> info_;
+};
+
+TEST_F(MapInfoGetElfTest, invalid) {
+ // The map is empty, but this should still create an invalid elf object.
+ std::unique_ptr<Elf> elf(info_->GetElf(getpid(), false));
+ ASSERT_TRUE(elf.get() != nullptr);
+ ASSERT_FALSE(elf->valid());
+}
+
+TEST_F(MapInfoGetElfTest, valid32) {
+ Elf32_Ehdr ehdr;
+ TestInitEhdr<Elf32_Ehdr>(&ehdr, ELFCLASS32, EM_ARM);
+ memcpy(map_, &ehdr, sizeof(ehdr));
+
+ std::unique_ptr<Elf> elf(info_->GetElf(getpid(), false));
+ ASSERT_TRUE(elf.get() != nullptr);
+ ASSERT_TRUE(elf->valid());
+ EXPECT_EQ(static_cast<uint32_t>(EM_ARM), elf->machine_type());
+ EXPECT_EQ(ELFCLASS32, elf->class_type());
+}
+
+TEST_F(MapInfoGetElfTest, valid64) {
+ Elf64_Ehdr ehdr;
+ TestInitEhdr<Elf64_Ehdr>(&ehdr, ELFCLASS64, EM_AARCH64);
+ memcpy(map_, &ehdr, sizeof(ehdr));
+
+ std::unique_ptr<Elf> elf(info_->GetElf(getpid(), false));
+ ASSERT_TRUE(elf.get() != nullptr);
+ ASSERT_TRUE(elf->valid());
+ EXPECT_EQ(static_cast<uint32_t>(EM_AARCH64), elf->machine_type());
+ EXPECT_EQ(ELFCLASS64, elf->class_type());
+}
+
+TEST_F(MapInfoGetElfTest, gnu_debugdata_do_not_init32) {
+ TestInitGnuDebugdata<Elf32_Ehdr, Elf32_Shdr>(
+ ELFCLASS32, EM_ARM, false, [&](uint64_t offset, const void* ptr, size_t size) {
+ memcpy(&reinterpret_cast<uint8_t*>(map_)[offset], ptr, size);
+ });
+
+ std::unique_ptr<Elf> elf(info_->GetElf(getpid(), false));
+ ASSERT_TRUE(elf.get() != nullptr);
+ ASSERT_TRUE(elf->valid());
+ EXPECT_EQ(static_cast<uint32_t>(EM_ARM), elf->machine_type());
+ EXPECT_EQ(ELFCLASS32, elf->class_type());
+ EXPECT_TRUE(elf->gnu_debugdata_interface() == nullptr);
+}
+
+TEST_F(MapInfoGetElfTest, gnu_debugdata_do_not_init64) {
+ TestInitGnuDebugdata<Elf64_Ehdr, Elf64_Shdr>(
+ ELFCLASS64, EM_AARCH64, false, [&](uint64_t offset, const void* ptr, size_t size) {
+ memcpy(&reinterpret_cast<uint8_t*>(map_)[offset], ptr, size);
+ });
+
+ std::unique_ptr<Elf> elf(info_->GetElf(getpid(), false));
+ ASSERT_TRUE(elf.get() != nullptr);
+ ASSERT_TRUE(elf->valid());
+ EXPECT_EQ(static_cast<uint32_t>(EM_AARCH64), elf->machine_type());
+ EXPECT_EQ(ELFCLASS64, elf->class_type());
+ EXPECT_TRUE(elf->gnu_debugdata_interface() == nullptr);
+}
+
+TEST_F(MapInfoGetElfTest, gnu_debugdata_init32) {
+ TestInitGnuDebugdata<Elf32_Ehdr, Elf32_Shdr>(
+ ELFCLASS32, EM_ARM, true, [&](uint64_t offset, const void* ptr, size_t size) {
+ memcpy(&reinterpret_cast<uint8_t*>(map_)[offset], ptr, size);
+ });
+
+ std::unique_ptr<Elf> elf(info_->GetElf(getpid(), true));
+ ASSERT_TRUE(elf.get() != nullptr);
+ ASSERT_TRUE(elf->valid());
+ EXPECT_EQ(static_cast<uint32_t>(EM_ARM), elf->machine_type());
+ EXPECT_EQ(ELFCLASS32, elf->class_type());
+ EXPECT_TRUE(elf->gnu_debugdata_interface() != nullptr);
+}
+
+TEST_F(MapInfoGetElfTest, gnu_debugdata_init64) {
+ TestInitGnuDebugdata<Elf64_Ehdr, Elf64_Shdr>(
+ ELFCLASS64, EM_AARCH64, true, [&](uint64_t offset, const void* ptr, size_t size) {
+ memcpy(&reinterpret_cast<uint8_t*>(map_)[offset], ptr, size);
+ });
+
+ std::unique_ptr<Elf> elf(info_->GetElf(getpid(), true));
+ ASSERT_TRUE(elf.get() != nullptr);
+ ASSERT_TRUE(elf->valid());
+ EXPECT_EQ(static_cast<uint32_t>(EM_AARCH64), elf->machine_type());
+ EXPECT_EQ(ELFCLASS64, elf->class_type());
+ EXPECT_TRUE(elf->gnu_debugdata_interface() != nullptr);
+}