df683b7439
The code was not properly getting the variable addresses and using the offset and address fields of the .data section. Fix all of that, and update the tests. Bug: 145162678 Test: Unit tests pass. Test: ./art/test/run-test --dex2oat-jobs 4 --host --prebuild --compact-dex-level fast --jit --no-relocate --runtime-option -Xcheck:jni 137-cfi Test: ./art/test/testrunner/testrunner.py -t 137 --host Change-Id: Ic61c4487334fd2273cda9c56eb1a3b525a03edb7
414 lines
14 KiB
C++
414 lines
14 KiB
C++
/*
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* Copyright (C) 2018 The Android Open Source Project
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*
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*/
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#include <elf.h>
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#include <string.h>
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#include <memory>
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#include <vector>
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#include <gtest/gtest.h>
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#include <unwindstack/Elf.h>
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#include <unwindstack/JitDebug.h>
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#include <unwindstack/MapInfo.h>
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#include <unwindstack/Maps.h>
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#include <unwindstack/Memory.h>
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#include "ElfFake.h"
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#include "MemoryFake.h"
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namespace unwindstack {
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class JitDebugTest : public ::testing::Test {
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protected:
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void CreateFakeElf(MapInfo* map_info, uint64_t global_offset, uint64_t data_offset,
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uint64_t data_vaddr, uint64_t data_size) {
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MemoryFake* memory = new MemoryFake;
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ElfFake* elf = new ElfFake(memory);
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elf->FakeSetValid(true);
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ElfInterfaceFake* interface = new ElfInterfaceFake(memory);
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elf->FakeSetInterface(interface);
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interface->FakeSetGlobalVariable("__jit_debug_descriptor", global_offset);
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interface->FakeSetDataOffset(data_offset);
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interface->FakeSetDataVaddrStart(data_vaddr);
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interface->FakeSetDataVaddrEnd(data_vaddr + data_size);
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map_info->elf.reset(elf);
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}
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void Init(ArchEnum arch) {
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jit_debug_.reset(new JitDebug(process_memory_));
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jit_debug_->SetArch(arch);
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maps_.reset(
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new BufferMaps("1000-4000 ---s 00000000 00:00 0 /fake/elf1\n"
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"4000-6000 r--s 00000000 00:00 0 /fake/elf1\n"
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"6000-8000 -wxs 00002000 00:00 0 /fake/elf1\n"
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"a000-c000 --xp 00000000 00:00 0 /fake/elf2\n"
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"c000-f000 rw-p 00002000 00:00 0 /fake/elf2\n"
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"f000-11000 r--p 00000000 00:00 0 /fake/elf3\n"
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"11000-12000 rw-p 00002000 00:00 0 /fake/elf3\n"
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"12000-14000 r--p 00000000 00:00 0 /fake/elf4\n"
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"100000-110000 rw-p 00ee000 00:00 0 /fake/elf4\n"
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"200000-210000 rw-p 01ee000 00:00 0 /fake/elf4\n"));
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ASSERT_TRUE(maps_->Parse());
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MapInfo* map_info = maps_->Get(3);
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ASSERT_TRUE(map_info != nullptr);
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CreateFakeElf(map_info, 0x2800, 0x2000, 0x2000, 0x3000);
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map_info = maps_->Get(5);
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ASSERT_TRUE(map_info != nullptr);
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CreateFakeElf(map_info, 0x2800, 0x2000, 0x2000, 0x3000);
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map_info = maps_->Get(7);
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ASSERT_TRUE(map_info != nullptr);
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CreateFakeElf(map_info, 0xee800, 0xee000, 0xee000, 0x10000);
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}
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void SetUp() override {
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memory_ = new MemoryFake;
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process_memory_.reset(memory_);
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Init(ARCH_ARM);
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}
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template <typename EhdrType, typename ShdrType>
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void CreateElf(uint64_t offset, uint8_t class_type, uint8_t machine_type, uint32_t pc,
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uint32_t size) {
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EhdrType ehdr;
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memset(&ehdr, 0, sizeof(ehdr));
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uint64_t sh_offset = sizeof(ehdr);
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memcpy(ehdr.e_ident, ELFMAG, SELFMAG);
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ehdr.e_ident[EI_CLASS] = class_type;
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ehdr.e_machine = machine_type;
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ehdr.e_shstrndx = 1;
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ehdr.e_shoff = sh_offset;
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ehdr.e_shentsize = sizeof(ShdrType);
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ehdr.e_shnum = 3;
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memory_->SetMemory(offset, &ehdr, sizeof(ehdr));
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ShdrType shdr;
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memset(&shdr, 0, sizeof(shdr));
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shdr.sh_type = SHT_NULL;
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memory_->SetMemory(offset + sh_offset, &shdr, sizeof(shdr));
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sh_offset += sizeof(shdr);
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memset(&shdr, 0, sizeof(shdr));
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shdr.sh_type = SHT_STRTAB;
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shdr.sh_name = 1;
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shdr.sh_offset = 0x500;
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shdr.sh_size = 0x100;
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memory_->SetMemory(offset + sh_offset, &shdr, sizeof(shdr));
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memory_->SetMemory(offset + 0x500, ".debug_frame");
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sh_offset += sizeof(shdr);
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memset(&shdr, 0, sizeof(shdr));
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shdr.sh_type = SHT_PROGBITS;
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shdr.sh_name = 0;
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shdr.sh_addr = 0x600;
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shdr.sh_offset = 0x600;
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shdr.sh_size = 0x200;
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memory_->SetMemory(offset + sh_offset, &shdr, sizeof(shdr));
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// Now add a single cie/fde.
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uint64_t dwarf_offset = offset + 0x600;
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if (class_type == ELFCLASS32) {
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// CIE 32 information.
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memory_->SetData32(dwarf_offset, 0xfc);
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memory_->SetData32(dwarf_offset + 0x4, 0xffffffff);
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memory_->SetData8(dwarf_offset + 0x8, 1);
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memory_->SetData8(dwarf_offset + 0x9, '\0');
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memory_->SetData8(dwarf_offset + 0xa, 0x4);
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memory_->SetData8(dwarf_offset + 0xb, 0x4);
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memory_->SetData8(dwarf_offset + 0xc, 0x1);
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// FDE 32 information.
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memory_->SetData32(dwarf_offset + 0x100, 0xfc);
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memory_->SetData32(dwarf_offset + 0x104, 0);
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memory_->SetData32(dwarf_offset + 0x108, pc);
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memory_->SetData32(dwarf_offset + 0x10c, size);
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} else {
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// CIE 64 information.
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memory_->SetData32(dwarf_offset, 0xffffffff);
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memory_->SetData64(dwarf_offset + 4, 0xf4);
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memory_->SetData64(dwarf_offset + 0xc, 0xffffffffffffffffULL);
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memory_->SetData8(dwarf_offset + 0x14, 1);
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memory_->SetData8(dwarf_offset + 0x15, '\0');
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memory_->SetData8(dwarf_offset + 0x16, 0x4);
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memory_->SetData8(dwarf_offset + 0x17, 0x4);
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memory_->SetData8(dwarf_offset + 0x18, 0x1);
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// FDE 64 information.
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memory_->SetData32(dwarf_offset + 0x100, 0xffffffff);
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memory_->SetData64(dwarf_offset + 0x104, 0xf4);
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memory_->SetData64(dwarf_offset + 0x10c, 0);
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memory_->SetData64(dwarf_offset + 0x114, pc);
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memory_->SetData64(dwarf_offset + 0x11c, size);
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}
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}
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void WriteDescriptor32(uint64_t addr, uint32_t entry);
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void WriteDescriptor64(uint64_t addr, uint64_t entry);
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void WriteEntry32Pack(uint64_t addr, uint32_t prev, uint32_t next, uint32_t elf_addr,
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uint64_t elf_size);
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void WriteEntry32Pad(uint64_t addr, uint32_t prev, uint32_t next, uint32_t elf_addr,
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uint64_t elf_size);
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void WriteEntry64(uint64_t addr, uint64_t prev, uint64_t next, uint64_t elf_addr,
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uint64_t elf_size);
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std::shared_ptr<Memory> process_memory_;
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MemoryFake* memory_;
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std::unique_ptr<JitDebug> jit_debug_;
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std::unique_ptr<BufferMaps> maps_;
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};
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void JitDebugTest::WriteDescriptor32(uint64_t addr, uint32_t entry) {
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// Format of the 32 bit JITDescriptor structure:
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// uint32_t version
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memory_->SetData32(addr, 1);
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// uint32_t action_flag
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memory_->SetData32(addr + 4, 0);
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// uint32_t relevant_entry
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memory_->SetData32(addr + 8, 0);
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// uint32_t first_entry
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memory_->SetData32(addr + 12, entry);
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}
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void JitDebugTest::WriteDescriptor64(uint64_t addr, uint64_t entry) {
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// Format of the 64 bit JITDescriptor structure:
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// uint32_t version
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memory_->SetData32(addr, 1);
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// uint32_t action_flag
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memory_->SetData32(addr + 4, 0);
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// uint64_t relevant_entry
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memory_->SetData64(addr + 8, 0);
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// uint64_t first_entry
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memory_->SetData64(addr + 16, entry);
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}
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void JitDebugTest::WriteEntry32Pack(uint64_t addr, uint32_t prev, uint32_t next, uint32_t elf_addr,
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uint64_t elf_size) {
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// Format of the 32 bit JITCodeEntry structure:
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// uint32_t next
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memory_->SetData32(addr, next);
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// uint32_t prev
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memory_->SetData32(addr + 4, prev);
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// uint32_t symfile_addr
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memory_->SetData32(addr + 8, elf_addr);
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// uint64_t symfile_size
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memory_->SetData64(addr + 12, elf_size);
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}
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void JitDebugTest::WriteEntry32Pad(uint64_t addr, uint32_t prev, uint32_t next, uint32_t elf_addr,
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uint64_t elf_size) {
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// Format of the 32 bit JITCodeEntry structure:
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// uint32_t next
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memory_->SetData32(addr, next);
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// uint32_t prev
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memory_->SetData32(addr + 4, prev);
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// uint32_t symfile_addr
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memory_->SetData32(addr + 8, elf_addr);
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// uint32_t pad
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memory_->SetData32(addr + 12, 0);
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// uint64_t symfile_size
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memory_->SetData64(addr + 16, elf_size);
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}
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void JitDebugTest::WriteEntry64(uint64_t addr, uint64_t prev, uint64_t next, uint64_t elf_addr,
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uint64_t elf_size) {
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// Format of the 64 bit JITCodeEntry structure:
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// uint64_t next
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memory_->SetData64(addr, next);
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// uint64_t prev
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memory_->SetData64(addr + 8, prev);
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// uint64_t symfile_addr
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memory_->SetData64(addr + 16, elf_addr);
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// uint64_t symfile_size
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memory_->SetData64(addr + 24, elf_size);
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}
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TEST_F(JitDebugTest, get_elf_invalid) {
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Elf* elf = jit_debug_->GetElf(maps_.get(), 0x1500);
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ASSERT_TRUE(elf == nullptr);
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}
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TEST_F(JitDebugTest, get_elf_no_global_variable) {
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maps_.reset(new BufferMaps(""));
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Elf* elf = jit_debug_->GetElf(maps_.get(), 0x1500);
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ASSERT_TRUE(elf == nullptr);
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}
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TEST_F(JitDebugTest, get_elf_no_valid_descriptor_in_memory) {
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CreateElf<Elf32_Ehdr, Elf32_Shdr>(0x4000, ELFCLASS32, EM_ARM, 0x1500, 0x200);
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Elf* elf = jit_debug_->GetElf(maps_.get(), 0x1500);
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ASSERT_TRUE(elf == nullptr);
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}
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TEST_F(JitDebugTest, get_elf_no_valid_code_entry) {
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CreateElf<Elf32_Ehdr, Elf32_Shdr>(0x4000, ELFCLASS32, EM_ARM, 0x1500, 0x200);
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WriteDescriptor32(0x11800, 0x200000);
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Elf* elf = jit_debug_->GetElf(maps_.get(), 0x1500);
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ASSERT_TRUE(elf == nullptr);
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}
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TEST_F(JitDebugTest, get_elf_invalid_descriptor_first_entry) {
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CreateElf<Elf32_Ehdr, Elf32_Shdr>(0x4000, ELFCLASS32, EM_ARM, 0x1500, 0x200);
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WriteDescriptor32(0x11800, 0);
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Elf* elf = jit_debug_->GetElf(maps_.get(), 0x1500);
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ASSERT_TRUE(elf == nullptr);
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}
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TEST_F(JitDebugTest, get_elf_invalid_descriptor_version) {
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CreateElf<Elf32_Ehdr, Elf32_Shdr>(0x4000, ELFCLASS32, EM_ARM, 0x1500, 0x200);
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WriteDescriptor32(0x11800, 0x20000);
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// Set the version to an invalid value.
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memory_->SetData32(0x11800, 2);
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Elf* elf = jit_debug_->GetElf(maps_.get(), 0x1500);
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ASSERT_TRUE(elf == nullptr);
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}
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TEST_F(JitDebugTest, get_elf_32) {
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CreateElf<Elf32_Ehdr, Elf32_Shdr>(0x4000, ELFCLASS32, EM_ARM, 0x1500, 0x200);
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WriteDescriptor32(0x11800, 0x200000);
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WriteEntry32Pad(0x200000, 0, 0, 0x4000, 0x1000);
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Elf* elf = jit_debug_->GetElf(maps_.get(), 0x1500);
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ASSERT_TRUE(elf != nullptr);
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// Clear the memory and verify all of the data is cached.
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memory_->Clear();
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Elf* elf2 = jit_debug_->GetElf(maps_.get(), 0x1500);
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ASSERT_TRUE(elf2 != nullptr);
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EXPECT_EQ(elf, elf2);
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}
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TEST_F(JitDebugTest, get_multiple_jit_debug_descriptors_valid) {
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CreateElf<Elf32_Ehdr, Elf32_Shdr>(0x4000, ELFCLASS32, EM_ARM, 0x1500, 0x200);
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CreateElf<Elf32_Ehdr, Elf32_Shdr>(0x5000, ELFCLASS32, EM_ARM, 0x2000, 0x300);
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WriteDescriptor32(0x11800, 0x200000);
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WriteEntry32Pad(0x200000, 0, 0, 0x4000, 0x1000);
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WriteDescriptor32(0x100800, 0x201000);
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WriteEntry32Pad(0x201000, 0, 0, 0x5000, 0x1000);
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ASSERT_TRUE(jit_debug_->GetElf(maps_.get(), 0x1500) != nullptr);
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ASSERT_TRUE(jit_debug_->GetElf(maps_.get(), 0x2000) == nullptr);
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// Now clear the descriptor entry for the first one.
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WriteDescriptor32(0x11800, 0);
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jit_debug_.reset(new JitDebug(process_memory_));
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jit_debug_->SetArch(ARCH_ARM);
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ASSERT_TRUE(jit_debug_->GetElf(maps_.get(), 0x1500) == nullptr);
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ASSERT_TRUE(jit_debug_->GetElf(maps_.get(), 0x2000) != nullptr);
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}
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TEST_F(JitDebugTest, get_elf_x86) {
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Init(ARCH_X86);
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CreateElf<Elf32_Ehdr, Elf32_Shdr>(0x4000, ELFCLASS32, EM_ARM, 0x1500, 0x200);
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WriteDescriptor32(0x11800, 0x200000);
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WriteEntry32Pack(0x200000, 0, 0, 0x4000, 0x1000);
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jit_debug_->SetArch(ARCH_X86);
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Elf* elf = jit_debug_->GetElf(maps_.get(), 0x1500);
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ASSERT_TRUE(elf != nullptr);
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// Clear the memory and verify all of the data is cached.
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memory_->Clear();
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Elf* elf2 = jit_debug_->GetElf(maps_.get(), 0x1500);
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ASSERT_TRUE(elf2 != nullptr);
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EXPECT_EQ(elf, elf2);
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}
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TEST_F(JitDebugTest, get_elf_64) {
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Init(ARCH_ARM64);
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CreateElf<Elf64_Ehdr, Elf64_Shdr>(0x4000, ELFCLASS64, EM_AARCH64, 0x1500, 0x200);
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WriteDescriptor64(0x11800, 0x200000);
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WriteEntry64(0x200000, 0, 0, 0x4000, 0x1000);
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Elf* elf = jit_debug_->GetElf(maps_.get(), 0x1500);
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ASSERT_TRUE(elf != nullptr);
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// Clear the memory and verify all of the data is cached.
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memory_->Clear();
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Elf* elf2 = jit_debug_->GetElf(maps_.get(), 0x1500);
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ASSERT_TRUE(elf2 != nullptr);
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EXPECT_EQ(elf, elf2);
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}
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TEST_F(JitDebugTest, get_elf_multiple_entries) {
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CreateElf<Elf32_Ehdr, Elf32_Shdr>(0x4000, ELFCLASS32, EM_ARM, 0x1500, 0x200);
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CreateElf<Elf32_Ehdr, Elf32_Shdr>(0x5000, ELFCLASS32, EM_ARM, 0x2300, 0x400);
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WriteDescriptor32(0x11800, 0x200000);
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WriteEntry32Pad(0x200000, 0, 0x200100, 0x4000, 0x1000);
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WriteEntry32Pad(0x200100, 0x200100, 0, 0x5000, 0x1000);
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Elf* elf_2 = jit_debug_->GetElf(maps_.get(), 0x2400);
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ASSERT_TRUE(elf_2 != nullptr);
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Elf* elf_1 = jit_debug_->GetElf(maps_.get(), 0x1600);
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ASSERT_TRUE(elf_1 != nullptr);
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// Clear the memory and verify all of the data is cached.
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memory_->Clear();
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EXPECT_EQ(elf_1, jit_debug_->GetElf(maps_.get(), 0x1500));
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EXPECT_EQ(elf_1, jit_debug_->GetElf(maps_.get(), 0x16ff));
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EXPECT_EQ(elf_2, jit_debug_->GetElf(maps_.get(), 0x2300));
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EXPECT_EQ(elf_2, jit_debug_->GetElf(maps_.get(), 0x26ff));
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EXPECT_EQ(nullptr, jit_debug_->GetElf(maps_.get(), 0x1700));
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EXPECT_EQ(nullptr, jit_debug_->GetElf(maps_.get(), 0x2700));
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}
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TEST_F(JitDebugTest, get_elf_search_libs) {
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CreateElf<Elf32_Ehdr, Elf32_Shdr>(0x4000, ELFCLASS32, EM_ARM, 0x1500, 0x200);
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WriteDescriptor32(0x11800, 0x200000);
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WriteEntry32Pad(0x200000, 0, 0, 0x4000, 0x1000);
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// Only search a given named list of libs.
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std::vector<std::string> libs{"libart.so"};
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jit_debug_.reset(new JitDebug(process_memory_, libs));
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jit_debug_->SetArch(ARCH_ARM);
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EXPECT_TRUE(jit_debug_->GetElf(maps_.get(), 0x1500) == nullptr);
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// Change the name of the map that includes the value and verify this works.
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MapInfo* map_info = maps_->Get(5);
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map_info->name = "/system/lib/libart.so";
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map_info = maps_->Get(6);
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map_info->name = "/system/lib/libart.so";
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jit_debug_.reset(new JitDebug(process_memory_, libs));
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// Make sure that clearing our copy of the libs doesn't affect the
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// JitDebug object.
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libs.clear();
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jit_debug_->SetArch(ARCH_ARM);
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EXPECT_TRUE(jit_debug_->GetElf(maps_.get(), 0x1500) != nullptr);
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}
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} // namespace unwindstack
|