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//===-- TestDWARFCallFrameInfo.cpp ------------------------------*- C++ -*-===//
//
//
// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
// See https://llvm.org/LICENSE.txt for license information.
// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
//
//===----------------------------------------------------------------------===//
#include "gtest/gtest.h"
#include "Plugins/ObjectFile/ELF/ObjectFileELF.h"
#include "Plugins/Process/Utility/RegisterContext_x86.h"
#include "Plugins/SymbolFile/Symtab/SymbolFileSymtab.h"
#include "TestingSupport/SubsystemRAII.h"
#include "TestingSupport/TestUtilities.h"
#include "lldb/Core/Module.h"
#include "lldb/Core/ModuleSpec.h"
#include "lldb/Core/Section.h"
#include "lldb/Host/FileSystem.h"
#include "lldb/Host/HostInfo.h"
#include "lldb/Symbol/DWARFCallFrameInfo.h"
#include "lldb/Utility/StreamString.h"
#include "llvm/Testing/Support/Error.h"
#include "llvm/Support/FileUtilities.h"
#include "llvm/Support/Path.h"
#include "llvm/Support/Program.h"
#include "llvm/Support/raw_ostream.h"
using namespace lldb_private;
using namespace lldb;
class DWARFCallFrameInfoTest : public testing::Test {
SubsystemRAII<FileSystem, HostInfo, ObjectFileELF, SymbolFileSymtab>
subsystems;
protected:
void TestBasic(DWARFCallFrameInfo::Type type, llvm::StringRef symbol);
};
namespace lldb_private {
static std::ostream &operator<<(std::ostream &OS, const UnwindPlan::Row &row) {
StreamString SS;
row.Dump(SS, nullptr, nullptr, 0);
return OS << SS.GetData();
}
} // namespace lldb_private
static UnwindPlan::Row GetExpectedRow0() {
UnwindPlan::Row row;
row.SetOffset(0);
row.GetCFAValue().SetIsRegisterPlusOffset(dwarf_rsp_x86_64, 8);
row.SetRegisterLocationToAtCFAPlusOffset(dwarf_rip_x86_64, -8, false);
return row;
}
static UnwindPlan::Row GetExpectedRow1() {
UnwindPlan::Row row;
row.SetOffset(1);
row.GetCFAValue().SetIsRegisterPlusOffset(dwarf_rsp_x86_64, 16);
row.SetRegisterLocationToAtCFAPlusOffset(dwarf_rip_x86_64, -8, false);
row.SetRegisterLocationToAtCFAPlusOffset(dwarf_rbp_x86_64, -16, false);
return row;
}
static UnwindPlan::Row GetExpectedRow2() {
UnwindPlan::Row row;
row.SetOffset(4);
row.GetCFAValue().SetIsRegisterPlusOffset(dwarf_rbp_x86_64, 16);
row.SetRegisterLocationToAtCFAPlusOffset(dwarf_rip_x86_64, -8, false);
row.SetRegisterLocationToAtCFAPlusOffset(dwarf_rbp_x86_64, -16, false);
return row;
}
void DWARFCallFrameInfoTest::TestBasic(DWARFCallFrameInfo::Type type,
llvm::StringRef symbol) {
auto ExpectedFile = TestFile::fromYaml(R"(
--- !ELF
FileHeader:
Class: ELFCLASS64
Data: ELFDATA2LSB
Type: ET_DYN
Machine: EM_X86_64
Entry: 0x0000000000000260
Sections:
- Name: .text
Type: SHT_PROGBITS
Flags: [ SHF_ALLOC, SHF_EXECINSTR ]
Address: 0x0000000000000260
AddressAlign: 0x0000000000000010
Content: 554889E5897DFC8B45FC5DC30F1F4000554889E5897DFC8B45FC5DC30F1F4000554889E5897DFC8B45FC5DC3
#0000000000000260 <eh_frame>:
# 260: 55 push %rbp
# 261: 48 89 e5 mov %rsp,%rbp
# 264: 89 7d fc mov %edi,-0x4(%rbp)
# 267: 8b 45 fc mov -0x4(%rbp),%eax
# 26a: 5d pop %rbp
# 26b: c3 retq
# 26c: 0f 1f 40 00 nopl 0x0(%rax)
#
#0000000000000270 <debug_frame3>:
# 270: 55 push %rbp
# 271: 48 89 e5 mov %rsp,%rbp
# 274: 89 7d fc mov %edi,-0x4(%rbp)
# 277: 8b 45 fc mov -0x4(%rbp),%eax
# 27a: 5d pop %rbp
# 27b: c3 retq
# 27c: 0f 1f 40 00 nopl 0x0(%rax)
#
#0000000000000280 <debug_frame4>:
# 280: 55 push %rbp
# 281: 48 89 e5 mov %rsp,%rbp
# 284: 89 7d fc mov %edi,-0x4(%rbp)
# 287: 8b 45 fc mov -0x4(%rbp),%eax
# 28a: 5d pop %rbp
# 28b: c3 retq
- Name: .eh_frame
Type: SHT_X86_64_UNWIND
Flags: [ SHF_ALLOC ]
Address: 0x0000000000000290
AddressAlign: 0x0000000000000008
Content: 1400000000000000017A5200017810011B0C0708900100001C0000001C000000B0FFFFFF0C00000000410E108602430D0600000000000000
#00000000 0000000000000014 00000000 CIE
# Version: 1
# Augmentation: "zR"
# Code alignment factor: 1
# Data alignment factor: -8
# Return address column: 16
# Augmentation data: 1b
#
# DW_CFA_def_cfa: r7 (rsp) ofs 8
# DW_CFA_offset: r16 (rip) at cfa-8
# DW_CFA_nop
# DW_CFA_nop
#
#00000018 000000000000001c 0000001c FDE cie=00000000 pc=ffffffffffffffd0..ffffffffffffffdc
# DW_CFA_advance_loc: 1 to ffffffffffffffd1
# DW_CFA_def_cfa_offset: 16
# DW_CFA_offset: r6 (rbp) at cfa-16
# DW_CFA_advance_loc: 3 to ffffffffffffffd4
# DW_CFA_def_cfa_register: r6 (rbp)
# DW_CFA_nop
# DW_CFA_nop
# DW_CFA_nop
# DW_CFA_nop
# DW_CFA_nop
# DW_CFA_nop
# DW_CFA_nop
- Name: .debug_frame
Type: SHT_PROGBITS
AddressAlign: 0x0000000000000008
Content: 14000000FFFFFFFF03000178100C070890010000000000001C0000000000000070020000000000000C00000000000000410E108602430D0614000000FFFFFFFF040008000178100C07089001000000001C0000003800000080020000000000000C00000000000000410E108602430D06
#00000000 0000000000000014 ffffffff CIE
# Version: 3
# Augmentation: ""
# Code alignment factor: 1
# Data alignment factor: -8
# Return address column: 16
#
# DW_CFA_def_cfa: r7 (rsp) ofs 8
# DW_CFA_offset: r16 (rip) at cfa-8
# DW_CFA_nop
# DW_CFA_nop
# DW_CFA_nop
# DW_CFA_nop
# DW_CFA_nop
# DW_CFA_nop
#
#00000018 000000000000001c 00000000 FDE cie=00000000 pc=0000000000000270..000000000000027c
# DW_CFA_advance_loc: 1 to 0000000000000271
# DW_CFA_def_cfa_offset: 16
# DW_CFA_offset: r6 (rbp) at cfa-16
# DW_CFA_advance_loc: 3 to 0000000000000274
# DW_CFA_def_cfa_register: r6 (rbp)
#
#00000038 0000000000000014 ffffffff CIE
# Version: 4
# Augmentation: ""
# Pointer Size: 8
# Segment Size: 0
# Code alignment factor: 1
# Data alignment factor: -8
# Return address column: 16
#
# DW_CFA_def_cfa: r7 (rsp) ofs 8
# DW_CFA_offset: r16 (rip) at cfa-8
# DW_CFA_nop
# DW_CFA_nop
# DW_CFA_nop
# DW_CFA_nop
#
#00000050 000000000000001c 00000038 FDE cie=00000038 pc=0000000000000280..000000000000028c
# DW_CFA_advance_loc: 1 to 0000000000000281
# DW_CFA_def_cfa_offset: 16
# DW_CFA_offset: r6 (rbp) at cfa-16
# DW_CFA_advance_loc: 3 to 0000000000000284
# DW_CFA_def_cfa_register: r6 (rbp)
Symbols:
- Name: eh_frame
Type: STT_FUNC
Section: .text
Value: 0x0000000000000260
Size: 0x000000000000000C
Binding: STB_GLOBAL
- Name: debug_frame3
Type: STT_FUNC
Section: .text
Value: 0x0000000000000270
Size: 0x000000000000000C
Binding: STB_GLOBAL
- Name: debug_frame4
Type: STT_FUNC
Section: .text
Value: 0x0000000000000280
Size: 0x000000000000000C
Binding: STB_GLOBAL
...
)");
ASSERT_THAT_EXPECTED(ExpectedFile, llvm::Succeeded());
auto module_sp =
std::make_shared<Module>(ModuleSpec(FileSpec(ExpectedFile->name())));
SectionList *list = module_sp->GetSectionList();
ASSERT_NE(nullptr, list);
auto section_sp = list->FindSectionByType(type == DWARFCallFrameInfo::EH
? eSectionTypeEHFrame
: eSectionTypeDWARFDebugFrame,
false);
ASSERT_NE(nullptr, section_sp);
DWARFCallFrameInfo cfi(*module_sp->GetObjectFile(), section_sp, type);
const Symbol *sym = module_sp->FindFirstSymbolWithNameAndType(
ConstString(symbol), eSymbolTypeAny);
ASSERT_NE(nullptr, sym);
UnwindPlan plan(eRegisterKindGeneric);
ASSERT_TRUE(cfi.GetUnwindPlan(sym->GetAddress(), plan));
ASSERT_EQ(3, plan.GetRowCount());
EXPECT_EQ(GetExpectedRow0(), *plan.GetRowAtIndex(0));
EXPECT_EQ(GetExpectedRow1(), *plan.GetRowAtIndex(1));
EXPECT_EQ(GetExpectedRow2(), *plan.GetRowAtIndex(2));
}
TEST_F(DWARFCallFrameInfoTest, Basic_dwarf3) {
TestBasic(DWARFCallFrameInfo::DWARF, "debug_frame3");
}
TEST_F(DWARFCallFrameInfoTest, Basic_dwarf4) {
TestBasic(DWARFCallFrameInfo::DWARF, "debug_frame4");
}
TEST_F(DWARFCallFrameInfoTest, Basic_eh) {
TestBasic(DWARFCallFrameInfo::EH, "eh_frame");
}
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