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[DWARF5] Added support for debug_macro section parsing and dumping in llvm-dwarfdump. 

Summary:
This patch adds parsing and dumping DWARFv5 .debug_macro section in llvm-dwarfdump,
it does not introduce any new switch. Existing switch "--debug-macro"
should be used to dump macinfo or macro section.

Reviewed By: dblaikie, ikudrin, jhenderson

Differential Revision: https://reviews.llvm.org/D73086
This commit is contained in:
Sourabh Singh Tomar 2020-03-26 13:15:15 +05:30
parent bd1d70bf0e
commit 69c8fb1c65
9 changed files with 345 additions and 46 deletions
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21
llvm/include/llvm/DebugInfo/DWARF/DWARFContext.h
View File

@ -61,6 +61,7 @@ class DWARFContext : public DIContext {
std::unique_ptr<DWARFDebugLine> Line;
std::unique_ptr<DWARFDebugFrame> DebugFrame;
std::unique_ptr<DWARFDebugFrame> EHFrame;
std::unique_ptr<DWARFDebugMacro> Macro;
std::unique_ptr<DWARFDebugMacro> Macinfo;
std::unique_ptr<DWARFDebugNames> Names;
std::unique_ptr<AppleAcceleratorTable> AppleNames;
@ -104,6 +105,15 @@ class DWARFContext : public DIContext {
std::unique_ptr<const DWARFObject> DObj;
/// Helper enum to distinguish between macro[.dwo] and macinfo[.dwo]
/// section.
enum MacroSecType {
MacinfoSection,
MacinfoDwoSection,
MacroSection
// FIXME: Add support for.debug_macro.dwo section.
};
public:
DWARFContext(std::unique_ptr<const DWARFObject> DObj,
std::string DWPName = "",
@ -272,12 +282,15 @@ public:
/// Get a pointer to the parsed eh frame information object.
const DWARFDebugFrame *getEHFrame();
/// Get a pointer to the parsed DebugMacro object.
/// Get a pointer to the parsed DebugMacinfo information object.
const DWARFDebugMacro *getDebugMacinfo();
/// Get a pointer to the parsed dwo DebugMacro object.
/// Get a pointer to the parsed DebugMacinfoDWO information object.
const DWARFDebugMacro *getDebugMacinfoDWO();
/// Get a pointer to the parsed DebugMacro information object.
const DWARFDebugMacro *getDebugMacro();
/// Get a reference to the parsed accelerator table object.
const DWARFDebugNames &getDebugNames();
@ -382,6 +395,10 @@ public:
}
private:
/// Parse a macro[.dwo] or macinfo[.dwo] section.
std::unique_ptr<DWARFDebugMacro>
parseMacroOrMacinfo(MacroSecType SectionType);
/// Return the compile unit which contains instruction with provided
/// address.
/// TODO: change input parameter from "uint64_t Address"

56
llvm/include/llvm/DebugInfo/DWARF/DWARFDebugMacro.h
View File

@ -10,7 +10,10 @@
#define LLVM_DEBUGINFO_DWARF_DWARFDEBUGMACRO_H
#include "llvm/ADT/SmallVector.h"
#include "llvm/Support/DataExtractor.h"
#include "llvm/DebugInfo/DWARF/DWARFDataExtractor.h"
#include "llvm/Support/Errc.h"
#include "llvm/Support/Error.h"
#include "llvm/Support/WithColor.h"
#include <cstdint>
namespace llvm {
@ -18,6 +21,45 @@ namespace llvm {
class raw_ostream;
class DWARFDebugMacro {
/// DWARFv5 section 6.3.1 Macro Information Header.
enum HeaderFlagMask {
#define HANDLE_MACRO_FLAG(ID, NAME) MACRO_##NAME = ID,
#include "llvm/BinaryFormat/Dwarf.def"
};
struct MacroHeader {
/// Macro version information number.
uint16_t Version = 0;
/// The bits of the flags field are interpreted as a set of flags, some of
/// which may indicate that additional fields follow. The following flags,
/// beginning with the least significant bit, are defined:
/// offset_size_flag:
/// If the offset_size_flag is zero, the header is for a 32-bit DWARF
/// format macro section and all offsets are 4 bytes long; if it is one,
/// the header is for a 64-bit DWARF format macro section and all offsets
/// are 8 bytes long.
/// debug_line_offset_flag:
/// If the debug_line_offset_flag is one, the debug_line_offset field (see
/// below) is present. If zero, that field is omitted.
/// opcode_operands_table_flag:
/// If the opcode_operands_table_flag is one, the opcode_operands_table
/// field (see below) is present. If zero, that field is omitted.
uint8_t Flags;
/// debug_line_offset
/// An offset in the .debug_line section of the beginning of the line
/// number information in the containing compilation unit, encoded as a
/// 4-byte offset for a 32-bit DWARF format macro section and an 8-byte
/// offset for a 64-bit DWARF format macro section.
uint64_t DebugLineOffset;
/// Print the macro header from the debug_macro section.
void dumpMacroHeader(raw_ostream &OS) const;
/// Parse the debug_macro header.
Error parseMacroHeader(DWARFDataExtractor Data, uint64_t *Offset);
};
/// A single macro entry within a macro list.
struct Entry {
/// The type of the macro entry.
@ -40,6 +82,10 @@ class DWARFDebugMacro {
};
struct MacroList {
// A value 0 in the `Header.Version` field indicates that we're parsing
// a macinfo[.dwo] section which doesn't have header itself, hence
// for that case other fields in the `Header` are uninitialized.
MacroHeader Header;
SmallVector<Entry, 4> Macros;
uint64_t Offset;
};
@ -50,11 +96,13 @@ class DWARFDebugMacro {
public:
DWARFDebugMacro() = default;
/// Print the macro list found within the debug_macinfo section.
/// Print the macro list found within the debug_macinfo/debug_macro section.
void dump(raw_ostream &OS) const;
/// Parse the debug_macinfo section accessible via the 'data' parameter.
void parse(DataExtractor data);
/// Parse the debug_macinfo/debug_macro section accessible via the 'Data'
/// parameter.
Error parse(DataExtractor StringExtractor, DWARFDataExtractor Data,
bool IsMacro);
/// Return whether the section has any entries.
bool empty() const { return MacroLists.empty(); }

1
llvm/include/llvm/DebugInfo/DWARF/DWARFObject.h
View File

@ -47,6 +47,7 @@ public:
virtual StringRef getStrSection() const { return ""; }
virtual const DWARFSection &getRangesSection() const { return Dummy; }
virtual const DWARFSection &getRnglistsSection() const { return Dummy; }
virtual const DWARFSection &getMacroSection() const { return Dummy; }
virtual StringRef getMacinfoSection() const { return ""; }
virtual StringRef getMacinfoDWOSection() const { return ""; }
virtual const DWARFSection &getPubnamesSection() const { return Dummy; }

72
llvm/lib/DebugInfo/DWARF/DWARFContext.cpp
View File

@ -292,6 +292,36 @@ static void dumpRnglistsSection(
}
}
std::unique_ptr<DWARFDebugMacro>
DWARFContext::parseMacroOrMacinfo(MacroSecType SectionType) {
auto Macro = std::make_unique<DWARFDebugMacro>();
auto ParseAndDump = [&](DWARFDataExtractor &Data, bool IsMacro) {
if (Error Err = Macro->parse(getStringExtractor(), Data, IsMacro)) {
RecoverableErrorHandler(std::move(Err));
Macro = nullptr;
}
};
switch (SectionType) {
case MacinfoSection: {
DWARFDataExtractor Data(DObj->getMacinfoSection(), isLittleEndian(), 0);
ParseAndDump(Data, /*IsMacro=*/false);
break;
}
case MacinfoDwoSection: {
DWARFDataExtractor Data(DObj->getMacinfoDWOSection(), isLittleEndian(), 0);
ParseAndDump(Data, /*IsMacro=*/false);
break;
}
case MacroSection: {
DWARFDataExtractor Data(*DObj, DObj->getMacroSection(), isLittleEndian(),
0);
ParseAndDump(Data, /*IsMacro=*/true);
break;
}
}
return std::move(Macro);
}
static void dumpLoclistsSection(raw_ostream &OS, DIDumpOptions DumpOpts,
DWARFDataExtractor Data,
const MCRegisterInfo *MRI,
@ -444,14 +474,22 @@ void DWARFContext::dump(
DObj->getEHFrameSection().Data))
getEHFrame()->dump(OS, getRegisterInfo(), *Off);
if (shouldDump(Explicit, ".debug_macro", DIDT_ID_DebugMacro,
DObj->getMacroSection().Data)) {
if (auto Macro = getDebugMacro())
Macro->dump(OS);
}
if (shouldDump(Explicit, ".debug_macinfo", DIDT_ID_DebugMacro,
DObj->getMacinfoSection())) {
getDebugMacinfo()->dump(OS);
if (auto Macinfo = getDebugMacinfo())
Macinfo->dump(OS);
}
if (shouldDump(Explicit, ".debug_macinfo.dwo", DIDT_ID_DebugMacro,
DObj->getMacinfoDWOSection())) {
getDebugMacinfoDWO()->dump(OS);
if (auto MacinfoDWO = getDebugMacinfoDWO())
MacinfoDWO->dump(OS);
}
if (shouldDump(Explicit, ".debug_aranges", DIDT_ID_DebugAranges,
@ -815,27 +853,24 @@ const DWARFDebugFrame *DWARFContext::getEHFrame() {
return DebugFrame.get();
}
const DWARFDebugMacro *DWARFContext::getDebugMacinfoDWO() {
if (MacinfoDWO)
return MacinfoDWO.get();
DataExtractor MacinfoDWOData(DObj->getMacinfoDWOSection(), isLittleEndian(),
0);
MacinfoDWO.reset(new DWARFDebugMacro());
MacinfoDWO->parse(MacinfoDWOData);
return MacinfoDWO.get();
const DWARFDebugMacro *DWARFContext::getDebugMacro() {
if (!Macro)
Macro = parseMacroOrMacinfo(MacroSection);
return Macro.get();
}
const DWARFDebugMacro *DWARFContext::getDebugMacinfo() {
if (Macinfo)
return Macinfo.get();
DataExtractor MacinfoData(DObj->getMacinfoSection(), isLittleEndian(), 0);
Macinfo.reset(new DWARFDebugMacro());
Macinfo->parse(MacinfoData);
if (!Macinfo)
Macinfo = parseMacroOrMacinfo(MacinfoSection);
return Macinfo.get();
}
const DWARFDebugMacro *DWARFContext::getDebugMacinfoDWO() {
if (!MacinfoDWO)
MacinfoDWO = parseMacroOrMacinfo(MacinfoDwoSection);
return MacinfoDWO.get();
}
template <typename T>
static T &getAccelTable(std::unique_ptr<T> &Cache, const DWARFObject &Obj,
const DWARFSection &Section, StringRef StringSection,
@ -1476,6 +1511,7 @@ class DWARFObjInMemory final : public DWARFObject {
DWARFSectionMap PubtypesSection;
DWARFSectionMap GnuPubnamesSection;
DWARFSectionMap GnuPubtypesSection;
DWARFSectionMap MacroSection;
DWARFSectionMap *mapNameToDWARFSection(StringRef Name) {
return StringSwitch<DWARFSectionMap *>(Name)
@ -1503,6 +1539,7 @@ class DWARFObjInMemory final : public DWARFObject {
.Case("apple_namespaces", &AppleNamespacesSection)
.Case("apple_namespac", &AppleNamespacesSection)
.Case("apple_objc", &AppleObjCSection)
.Case("debug_macro", &MacroSection)
.Default(nullptr);
}
@ -1847,6 +1884,7 @@ public:
const DWARFSection &getRnglistsSection() const override {
return RnglistsSection;
}
const DWARFSection &getMacroSection() const override { return MacroSection; }
StringRef getMacinfoSection() const override { return MacinfoSection; }
StringRef getMacinfoDWOSection() const override { return MacinfoDWOSection; }
const DWARFSection &getPubnamesSection() const override { return PubnamesSection; }

114
llvm/lib/DebugInfo/DWARF/DWARFDebugMacro.cpp
View File

@ -8,6 +8,8 @@
#include "llvm/DebugInfo/DWARF/DWARFDebugMacro.h"
#include "llvm/BinaryFormat/Dwarf.h"
#include "llvm/DebugInfo/DWARF/DWARFContext.h"
#include "llvm/DebugInfo/DWARF/DWARFDataExtractor.h"
#include "llvm/Support/WithColor.h"
#include "llvm/Support/raw_ostream.h"
#include <cstdint>
@ -15,10 +17,22 @@
using namespace llvm;
using namespace dwarf;
void DWARFDebugMacro::MacroHeader::dumpMacroHeader(raw_ostream &OS) const {
// FIXME: Add support for dumping opcode_operands_table
OS << format("macro header: version = 0x%04" PRIx16 ", flags = 0x%02" PRIx8,
Version, Flags);
if (Flags & MACRO_DEBUG_LINE_OFFSET)
OS << format(", debug_line_offset = 0x%04" PRIx64 "\n", DebugLineOffset);
else
OS << "\n";
}
void DWARFDebugMacro::dump(raw_ostream &OS) const {
unsigned IndLevel = 0;
for (const auto &Macros : MacroLists) {
OS << format("0x%08" PRIx64 ":\n", Macros.Offset);
if (Macros.Header.Version >= 5)
Macros.Header.dumpMacroHeader(OS);
for (const Entry &E : Macros.Macros) {
// There should not be DW_MACINFO_end_file when IndLevel is Zero. However,
// this check handles the case of corrupted ".debug_macinfo" section.
@ -28,22 +42,34 @@ void DWARFDebugMacro::dump(raw_ostream &OS) const {
for (unsigned I = 0; I < IndLevel; I++)
OS << " ";
IndLevel += (E.Type == DW_MACINFO_start_file);
WithColor(OS, HighlightColor::Macro).get() << MacinfoString(E.Type);
// Based on which version we are handling choose appropriate macro forms.
if (Macros.Header.Version >= 5)
WithColor(OS, HighlightColor::Macro).get() << MacroString(E.Type);
else
WithColor(OS, HighlightColor::Macro).get() << MacinfoString(E.Type);
switch (E.Type) {
default:
// Got a corrupted ".debug_macinfo" section (invalid macinfo type).
// Got a corrupted ".debug_macinfo/.debug_macro" section (invalid
// macinfo type).
break;
case DW_MACINFO_define:
case DW_MACINFO_undef:
// debug_macro and debug_macinfo share some common encodings.
// DW_MACRO_define == DW_MACINFO_define
// DW_MACRO_undef == DW_MACINFO_undef
// DW_MACRO_start_file == DW_MACINFO_start_file
// DW_MACRO_end_file == DW_MACINFO_end_file
// For readability/uniformity we are using DW_MACRO_*.
case DW_MACRO_define:
case DW_MACRO_undef:
case DW_MACRO_define_strp:
case DW_MACRO_undef_strp:
OS << " - lineno: " << E.Line;
OS << " macro: " << E.MacroStr;
break;
case DW_MACINFO_start_file:
case DW_MACRO_start_file:
OS << " - lineno: " << E.Line;
OS << " filenum: " << E.File;
break;
case DW_MACINFO_end_file:
case DW_MACRO_end_file:
break;
case DW_MACINFO_vendor_ext:
OS << " - constant: " << E.ExtConstant;
@ -55,23 +81,29 @@ void DWARFDebugMacro::dump(raw_ostream &OS) const {
}
}
void DWARFDebugMacro::parse(DataExtractor data) {
Error DWARFDebugMacro::parse(DataExtractor StringExtractor,
DWARFDataExtractor Data, bool IsMacro) {
uint64_t Offset = 0;
MacroList *M = nullptr;
while (data.isValidOffset(Offset)) {
while (Data.isValidOffset(Offset)) {
if (!M) {
MacroLists.emplace_back();
M = &MacroLists.back();
M->Offset = Offset;
if (IsMacro) {
auto Err = M->Header.parseMacroHeader(Data, &Offset);
if (Err)
return std::move(Err);
}
}
// A macro list entry consists of:
M->Macros.emplace_back();
Entry &E = M->Macros.back();
// 1. Macinfo type
E.Type = data.getULEB128(&Offset);
E.Type = Data.getULEB128(&Offset);
if (E.Type == 0) {
// Reached end of a ".debug_macinfo" section contribution.
// Reached end of a ".debug_macinfo/debug_macro" section contribution.
M = nullptr;
continue;
}
@ -81,28 +113,64 @@ void DWARFDebugMacro::parse(DataExtractor data) {
// Got a corrupted ".debug_macinfo" section (invalid macinfo type).
// Push the corrupted entry to the list and halt parsing.
E.Type = DW_MACINFO_invalid;
return;
case DW_MACINFO_define:
case DW_MACINFO_undef:
return Error::success();
// debug_macro and debug_macinfo share some common encodings.
// DW_MACRO_define == DW_MACINFO_define
// DW_MACRO_undef == DW_MACINFO_undef
// DW_MACRO_start_file == DW_MACINFO_start_file
// DW_MACRO_end_file == DW_MACINFO_end_file
// For readibility/uniformity we are using DW_MACRO_*.
case DW_MACRO_define:
case DW_MACRO_undef:
// 2. Source line
E.Line = data.getULEB128(&Offset);
E.Line = Data.getULEB128(&Offset);
// 3. Macro string
E.MacroStr = data.getCStr(&Offset);
E.MacroStr = Data.getCStr(&Offset);
break;
case DW_MACINFO_start_file:
case DW_MACRO_define_strp:
case DW_MACRO_undef_strp: {
uint64_t StrOffset = 0;
// 2. Source line
E.Line = data.getULEB128(&Offset);
// 3. Source file id
E.File = data.getULEB128(&Offset);
E.Line = Data.getULEB128(&Offset);
// 3. Macro string
// FIXME: Add support for DWARF64
StrOffset = Data.getRelocatedValue(/*OffsetSize=*/4, &Offset);
E.MacroStr = StringExtractor.getCStr(&StrOffset);
break;
case DW_MACINFO_end_file:
}
case DW_MACRO_start_file:
// 2. Source line
E.Line = Data.getULEB128(&Offset);
// 3. Source file id
E.File = Data.getULEB128(&Offset);
break;
case DW_MACRO_end_file:
break;
case DW_MACINFO_vendor_ext:
// 2. Vendor extension constant
E.ExtConstant = data.getULEB128(&Offset);
E.ExtConstant = Data.getULEB128(&Offset);
// 3. Vendor extension string
E.ExtStr = data.getCStr(&Offset);
E.ExtStr = Data.getCStr(&Offset);
break;
}
}
return Error::success();
}
Error DWARFDebugMacro::MacroHeader::parseMacroHeader(DWARFDataExtractor Data,
uint64_t *Offset) {
Version = Data.getU16(Offset);
uint8_t FlagData = Data.getU8(Offset);
// FIXME: Add support for DWARF64
if (FlagData & MACRO_OFFSET_SIZE)
return createStringError(errc::not_supported, "DWARF64 is not supported");
// FIXME: Add support for parsing opcode_operands_table
if (FlagData & MACRO_OPCODE_OPERANDS_TABLE)
return createStringError(errc::not_supported,
"opcode_operands_table is not supported");
Flags = FlagData;
if (Flags & MACRO_DEBUG_LINE_OFFSET)
DebugLineOffset = Data.getU32(Offset);
return Error::success();
}

47
llvm/test/DebugInfo/X86/debug-macro-macinfo.s Normal file
View File

@ -0,0 +1,47 @@
## This test checks that llvm-dwarfdump can dump both debug_macro and debug_macinfo
## sections present in the same object.
# RUN: llvm-mc -triple x86_64-unknown-linux -filetype=obj %s -o -| \
# RUN: llvm-dwarfdump -debug-macro - | FileCheck -strict-whitespace -match-full-lines %s
# CHECK:.debug_macro contents:
# CHECK-NEXT:0x00000000:
# CHECK-NEXT:macro header: version = 0x0005, flags = 0x02, debug_line_offset = 0x0000
# CHECK-NEXT:DW_MACRO_start_file - lineno: 0 filenum: 0
# CHECK-NEXT: DW_MACRO_define_strp - lineno: 1 macro: DWARF_VERSION 5
# CHECK-NEXT:DW_MACRO_end_file
# CHECK:.debug_macinfo contents:
# CHECK-NEXT:0x00000000:
# CHECK-NEXT:DW_MACINFO_start_file - lineno: 0 filenum: 2
# CHECK-NEXT: DW_MACINFO_define - lineno: 6 macro: DWARF_VERSION 4
# CHECK-NEXT:DW_MACINFO_end_file
.section .debug_macro,"",@progbits
.Lcu_macro_begin0:
.short 5 # Macro information version
.byte 2 # Flags: 32 bit, debug_line_offset present
.long 0 # debug_line_offset
.byte 3 # DW_MACRO_start_file
.byte 0 # Line Number
.byte 0 # File Number
.byte 5 # DW_MACRO_define_strp
.byte 1 # Line Number
.long .Linfo_string0 # Macro String
.byte 4 # DW_MACRO_end_file
.byte 0 # End Of Macro List Mark
.section .debug_macinfo,"",@progbits
.Lcu_macro_begin1:
.byte 3 # DW_MACINFO_start_file
.byte 0 # Line Number
.byte 2 # File Number
.byte 1 # DW_MACINFO_define
.byte 6 # Line Number
.asciz "DWARF_VERSION 4" # Macro String
.byte 4 # DW_MACINFO_end_file
.byte 0 # End Of Macro List Mark
.section .debug_str,"MS",@progbits,1
.Linfo_string0:
.asciz "DWARF_VERSION 5"

54
llvm/test/DebugInfo/X86/debug-macro-v5.s Normal file
View File

@ -0,0 +1,54 @@
## This test checks llvm-dwarfdump can dump debug_macro section containing
## multiple macro units.
# RUN: llvm-mc -triple x86_64-unknown-linux -filetype=obj %s -o -| \
# RUN: llvm-dwarfdump -debug-macro - | FileCheck -strict-whitespace -match-full-lines %s
# CHECK:.debug_macro contents:
# CHECK-NEXT:0x00000000:
# CHECK-NEXT:macro header: version = 0x0005, flags = 0x02, debug_line_offset = 0x0000
# CHECK-NEXT:DW_MACRO_start_file - lineno: 0 filenum: 0
# CHECK-NEXT: DW_MACRO_start_file - lineno: 1 filenum: 6
# CHECK-NEXT: DW_MACRO_define_strp - lineno: 1 macro: FOO 5
# CHECK-NEXT: DW_MACRO_end_file
# CHECK-NEXT: DW_MACRO_undef_strp - lineno: 8 macro: WORLD1
# CHECK-NEXT:DW_MACRO_end_file
# CHECK:0x{{.*}}:
# CHECK-NEXT:macro header: version = 0x0005, flags = 0x00
# CHECK-NEXT:DW_MACRO_define_strp - lineno: 0 macro: WORLD 2
.section .debug_macro,"",@progbits
.Lcu_macro_begin0:
.short 5 # Macro information version
.byte 2 # Flags: 32 bit, debug_line_offset present
.long 0 # debug_line_offset
.byte 3 # DW_MACRO_start_file
.byte 0 # Line Number
.byte 0 # File Number
.byte 3 # DW_MACRO_start_file
.byte 1 # Line Number
.byte 6 # File Number
.byte 5 # DW_MACRO_define_strp
.byte 1 # Line Number
.long .Linfo_string0 # Macro String
.byte 4 # DW_MACRO_end_file
.byte 6 # DW_MACRO_undef_strp
.byte 8 # Line Number
.long .Linfo_string1 # Macro String
.byte 4 # DW_MACRO_end_file
.byte 0 # End Of Macro List Mark
.short 5 # Macro information version
.byte 0 # Flags: 32 bit
.byte 5 # DW_MACRO_define_strp
.byte 0 # Line Number
.long .Linfo_string2 # Macro String
.byte 0 # End Of Macro List Mark
.section .debug_str,"MS",@progbits,1
.Linfo_string0:
.asciz "FOO 5"
.Linfo_string1:
.asciz "WORLD1"
.Linfo_string2:
.asciz "WORLD 2"

13
llvm/test/DebugInfo/X86/unsupported-dwarf64-debug-macro-v5.s Normal file
View File

@ -0,0 +1,13 @@
## This test checks llvm-dwarfdump emits correct error diagnostics for the
## unsupported case where DWARF64 flag is present in the debug_macro section header.
# RUN: llvm-mc -triple x86_64-unknown-linux -filetype=obj %s -o -| \
# RUN: not llvm-dwarfdump -debug-macro - /dev/null 2>&1 | FileCheck %s
# CHECK:error: DWARF64 is not supported
.section .debug_macro,"",@progbits
.Lcu_macro_begin0:
.short 5 # Macro information version
.byte 3 # Flags: 64 bit, debug_line_offset present
.quad 0 # debug_line_offset

13
llvm/test/DebugInfo/X86/unsupported-opcode_operands_table-debug-macro-v5.s Normal file
View File

@ -0,0 +1,13 @@
## This test checks llvm-dwarfdump emits correct error diagnostics for the
## unsupported case where the opcode_operands_table flag is present in the
## debug_macro section header.
# RUN: llvm-mc -triple x86_64-unknown-linux -filetype=obj %s -o -| \
# RUN: not llvm-dwarfdump -debug-macro - /dev/null 2>&1 | FileCheck %s
# CHECK:error: opcode_operands_table is not supported
.section .debug_macro,"",@progbits
.Lcu_macro_begin0:
.short 5 # Macro information version
.byte 4 # Flags: 32 bit, debug_line_offset absent, opcode_operands_table present