a4a00ced0c
Summary: This patch extends the ModuleSpec class to include a DataBufferSP which contains the module data. If this data is provided, LLDB won't try to hit the filesystem to create the Module, but use only the data stored in the ModuleSpec. Reviewers: labath, espindola Subscribers: emaste, MaskRay, lldb-commits Tags: #lldb Differential Revision: https://reviews.llvm.org/D83512
258 lines
8.5 KiB
C++
258 lines
8.5 KiB
C++
//===-- TestDWARFCallFrameInfo.cpp ----------------------------------------===//
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//
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//
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// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
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// See https://llvm.org/LICENSE.txt for license information.
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// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
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//
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//===----------------------------------------------------------------------===//
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#include "gtest/gtest.h"
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#include "Plugins/ObjectFile/ELF/ObjectFileELF.h"
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#include "Plugins/Process/Utility/RegisterContext_x86.h"
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#include "Plugins/SymbolFile/Symtab/SymbolFileSymtab.h"
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#include "TestingSupport/SubsystemRAII.h"
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#include "TestingSupport/TestUtilities.h"
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#include "lldb/Core/Module.h"
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#include "lldb/Core/ModuleSpec.h"
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#include "lldb/Core/Section.h"
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#include "lldb/Host/FileSystem.h"
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#include "lldb/Host/HostInfo.h"
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#include "lldb/Symbol/DWARFCallFrameInfo.h"
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#include "lldb/Utility/StreamString.h"
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#include "llvm/Testing/Support/Error.h"
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#include "llvm/Support/FileUtilities.h"
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#include "llvm/Support/Path.h"
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#include "llvm/Support/Program.h"
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#include "llvm/Support/raw_ostream.h"
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using namespace lldb_private;
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using namespace lldb;
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class DWARFCallFrameInfoTest : public testing::Test {
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SubsystemRAII<FileSystem, HostInfo, ObjectFileELF, SymbolFileSymtab>
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subsystems;
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protected:
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void TestBasic(DWARFCallFrameInfo::Type type, llvm::StringRef symbol);
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};
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namespace lldb_private {
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static std::ostream &operator<<(std::ostream &OS, const UnwindPlan::Row &row) {
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StreamString SS;
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row.Dump(SS, nullptr, nullptr, 0);
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return OS << SS.GetData();
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}
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} // namespace lldb_private
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static UnwindPlan::Row GetExpectedRow0() {
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UnwindPlan::Row row;
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row.SetOffset(0);
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row.GetCFAValue().SetIsRegisterPlusOffset(dwarf_rsp_x86_64, 8);
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row.SetRegisterLocationToAtCFAPlusOffset(dwarf_rip_x86_64, -8, false);
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return row;
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}
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static UnwindPlan::Row GetExpectedRow1() {
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UnwindPlan::Row row;
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row.SetOffset(1);
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row.GetCFAValue().SetIsRegisterPlusOffset(dwarf_rsp_x86_64, 16);
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row.SetRegisterLocationToAtCFAPlusOffset(dwarf_rip_x86_64, -8, false);
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row.SetRegisterLocationToAtCFAPlusOffset(dwarf_rbp_x86_64, -16, false);
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return row;
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}
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static UnwindPlan::Row GetExpectedRow2() {
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UnwindPlan::Row row;
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row.SetOffset(4);
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row.GetCFAValue().SetIsRegisterPlusOffset(dwarf_rbp_x86_64, 16);
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row.SetRegisterLocationToAtCFAPlusOffset(dwarf_rip_x86_64, -8, false);
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row.SetRegisterLocationToAtCFAPlusOffset(dwarf_rbp_x86_64, -16, false);
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return row;
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}
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void DWARFCallFrameInfoTest::TestBasic(DWARFCallFrameInfo::Type type,
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llvm::StringRef symbol) {
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auto ExpectedFile = TestFile::fromYaml(R"(
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--- !ELF
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FileHeader:
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Class: ELFCLASS64
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Data: ELFDATA2LSB
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Type: ET_DYN
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Machine: EM_X86_64
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Entry: 0x0000000000000260
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Sections:
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- Name: .text
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Type: SHT_PROGBITS
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Flags: [ SHF_ALLOC, SHF_EXECINSTR ]
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Address: 0x0000000000000260
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AddressAlign: 0x0000000000000010
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Content: 554889E5897DFC8B45FC5DC30F1F4000554889E5897DFC8B45FC5DC30F1F4000554889E5897DFC8B45FC5DC3
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#0000000000000260 <eh_frame>:
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# 260: 55 push %rbp
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# 261: 48 89 e5 mov %rsp,%rbp
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# 264: 89 7d fc mov %edi,-0x4(%rbp)
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# 267: 8b 45 fc mov -0x4(%rbp),%eax
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# 26a: 5d pop %rbp
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# 26b: c3 retq
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# 26c: 0f 1f 40 00 nopl 0x0(%rax)
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#
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#0000000000000270 <debug_frame3>:
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# 270: 55 push %rbp
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# 271: 48 89 e5 mov %rsp,%rbp
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# 274: 89 7d fc mov %edi,-0x4(%rbp)
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# 277: 8b 45 fc mov -0x4(%rbp),%eax
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# 27a: 5d pop %rbp
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# 27b: c3 retq
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# 27c: 0f 1f 40 00 nopl 0x0(%rax)
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#
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#0000000000000280 <debug_frame4>:
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# 280: 55 push %rbp
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# 281: 48 89 e5 mov %rsp,%rbp
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# 284: 89 7d fc mov %edi,-0x4(%rbp)
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# 287: 8b 45 fc mov -0x4(%rbp),%eax
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# 28a: 5d pop %rbp
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# 28b: c3 retq
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- Name: .eh_frame
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Type: SHT_X86_64_UNWIND
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Flags: [ SHF_ALLOC ]
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Address: 0x0000000000000290
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AddressAlign: 0x0000000000000008
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Content: 1400000000000000017A5200017810011B0C0708900100001C0000001C000000B0FFFFFF0C00000000410E108602430D0600000000000000
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#00000000 0000000000000014 00000000 CIE
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# Version: 1
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# Augmentation: "zR"
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# Code alignment factor: 1
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# Data alignment factor: -8
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# Return address column: 16
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# Augmentation data: 1b
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#
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# DW_CFA_def_cfa: r7 (rsp) ofs 8
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# DW_CFA_offset: r16 (rip) at cfa-8
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# DW_CFA_nop
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# DW_CFA_nop
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#
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#00000018 000000000000001c 0000001c FDE cie=00000000 pc=ffffffffffffffd0..ffffffffffffffdc
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# DW_CFA_advance_loc: 1 to ffffffffffffffd1
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# DW_CFA_def_cfa_offset: 16
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# DW_CFA_offset: r6 (rbp) at cfa-16
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# DW_CFA_advance_loc: 3 to ffffffffffffffd4
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# DW_CFA_def_cfa_register: r6 (rbp)
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# DW_CFA_nop
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# DW_CFA_nop
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# DW_CFA_nop
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# DW_CFA_nop
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# DW_CFA_nop
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# DW_CFA_nop
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# DW_CFA_nop
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- Name: .debug_frame
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Type: SHT_PROGBITS
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AddressAlign: 0x0000000000000008
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Content: 14000000FFFFFFFF03000178100C070890010000000000001C0000000000000070020000000000000C00000000000000410E108602430D0614000000FFFFFFFF040008000178100C07089001000000001C0000003800000080020000000000000C00000000000000410E108602430D06
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#00000000 0000000000000014 ffffffff CIE
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# Version: 3
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# Augmentation: ""
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# Code alignment factor: 1
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# Data alignment factor: -8
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# Return address column: 16
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#
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# DW_CFA_def_cfa: r7 (rsp) ofs 8
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# DW_CFA_offset: r16 (rip) at cfa-8
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# DW_CFA_nop
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# DW_CFA_nop
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# DW_CFA_nop
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# DW_CFA_nop
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# DW_CFA_nop
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# DW_CFA_nop
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#
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#00000018 000000000000001c 00000000 FDE cie=00000000 pc=0000000000000270..000000000000027c
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# DW_CFA_advance_loc: 1 to 0000000000000271
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# DW_CFA_def_cfa_offset: 16
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# DW_CFA_offset: r6 (rbp) at cfa-16
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# DW_CFA_advance_loc: 3 to 0000000000000274
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# DW_CFA_def_cfa_register: r6 (rbp)
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#
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#00000038 0000000000000014 ffffffff CIE
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# Version: 4
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# Augmentation: ""
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# Pointer Size: 8
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# Segment Size: 0
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# Code alignment factor: 1
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# Data alignment factor: -8
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# Return address column: 16
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#
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# DW_CFA_def_cfa: r7 (rsp) ofs 8
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# DW_CFA_offset: r16 (rip) at cfa-8
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# DW_CFA_nop
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# DW_CFA_nop
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# DW_CFA_nop
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# DW_CFA_nop
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#
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#00000050 000000000000001c 00000038 FDE cie=00000038 pc=0000000000000280..000000000000028c
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# DW_CFA_advance_loc: 1 to 0000000000000281
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# DW_CFA_def_cfa_offset: 16
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# DW_CFA_offset: r6 (rbp) at cfa-16
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# DW_CFA_advance_loc: 3 to 0000000000000284
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# DW_CFA_def_cfa_register: r6 (rbp)
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Symbols:
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- Name: eh_frame
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Type: STT_FUNC
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Section: .text
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Value: 0x0000000000000260
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Size: 0x000000000000000C
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Binding: STB_GLOBAL
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- Name: debug_frame3
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Type: STT_FUNC
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Section: .text
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Value: 0x0000000000000270
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Size: 0x000000000000000C
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Binding: STB_GLOBAL
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- Name: debug_frame4
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Type: STT_FUNC
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Section: .text
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Value: 0x0000000000000280
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Size: 0x000000000000000C
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Binding: STB_GLOBAL
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...
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)");
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ASSERT_THAT_EXPECTED(ExpectedFile, llvm::Succeeded());
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auto module_sp = std::make_shared<Module>(ExpectedFile->moduleSpec());
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SectionList *list = module_sp->GetSectionList();
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ASSERT_NE(nullptr, list);
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auto section_sp = list->FindSectionByType(type == DWARFCallFrameInfo::EH
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? eSectionTypeEHFrame
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: eSectionTypeDWARFDebugFrame,
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false);
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ASSERT_NE(nullptr, section_sp);
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DWARFCallFrameInfo cfi(*module_sp->GetObjectFile(), section_sp, type);
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const Symbol *sym = module_sp->FindFirstSymbolWithNameAndType(
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ConstString(symbol), eSymbolTypeAny);
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ASSERT_NE(nullptr, sym);
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UnwindPlan plan(eRegisterKindGeneric);
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ASSERT_TRUE(cfi.GetUnwindPlan(sym->GetAddress(), plan));
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ASSERT_EQ(3, plan.GetRowCount());
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EXPECT_EQ(GetExpectedRow0(), *plan.GetRowAtIndex(0));
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EXPECT_EQ(GetExpectedRow1(), *plan.GetRowAtIndex(1));
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EXPECT_EQ(GetExpectedRow2(), *plan.GetRowAtIndex(2));
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}
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TEST_F(DWARFCallFrameInfoTest, Basic_dwarf3) {
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TestBasic(DWARFCallFrameInfo::DWARF, "debug_frame3");
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}
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TEST_F(DWARFCallFrameInfoTest, Basic_dwarf4) {
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TestBasic(DWARFCallFrameInfo::DWARF, "debug_frame4");
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}
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TEST_F(DWARFCallFrameInfoTest, Basic_eh) {
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TestBasic(DWARFCallFrameInfo::EH, "eh_frame");
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}
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