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[DWARFYAML] Implement the .debug_loclists section.

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This patch implements the .debug_loclists section. There are only two
DWARF expressions are implemented in this patch (DW_OP_consts,
DW_OP_stack_value). We will implement more in the future.

The YAML description of the .debug_loclists section is:

```
debug_loclists:
  - Format:              DWARF32 ## Optional
    Length:              0x1234  ## Optional
    Version:             5       ## Optional (5 by default)
    AddressSize:         8       ## Optional
    SegmentSelectorSize: 0       ## Optional (0 by default)
    OffsetEntryCount:    1       ## Optional
    Offsets:             [ 1 ]   ## Optional
    Lists:
      - Entries:
          - Operator:          DW_LLE_startx_endx
            Values:            [ 0x1234, 0x4321 ]
            DescriptorsLength: 0x1234             ## Optional
            Descriptors:
              - Operator: DW_OP_consts
                Values:   [ 0x1234 ]
```

Reviewed By: jhenderson

Differential Revision: https://reviews.llvm.org/D84234
This commit is contained in:
Xing GUO 2020-08-03 23:19:42 +08:00
parent 4e0af248b2
commit 8d54ee8a03
5 changed files with 1115 additions and 0 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

1
include/llvm/ObjectYAML/DWARFEmitter.h
View File

@ -42,6 +42,7 @@ Error emitDebugLine(raw_ostream &OS, const Data &DI);
Error emitDebugAddr(raw_ostream &OS, const Data &DI);
Error emitDebugStrOffsets(raw_ostream &OS, const Data &DI);
Error emitDebugRnglists(raw_ostream &OS, const Data &DI);
Error emitDebugLoclists(raw_ostream &OS, const Data &DI);
std::function<Error(raw_ostream &, const Data &)>
getDWARFEmitterByName(StringRef SecName);

46
include/llvm/ObjectYAML/DWARFYAML.h
View File

@ -184,11 +184,23 @@ struct StringOffsetsTable {
std::vector<yaml::Hex64> Offsets;
};
struct DWARFOperation {
dwarf::LocationAtom Operator;
std::vector<yaml::Hex64> Values;
};
struct RnglistEntry {
dwarf::RnglistEntries Operator;
std::vector<yaml::Hex64> Values;
};
struct LoclistEntry {
dwarf::LoclistEntries Operator;
std::vector<yaml::Hex64> Values;
Optional<yaml::Hex64> DescriptionsLength;
std::vector<DWARFOperation> Descriptions;
};
template <typename EntryType> struct ListEntries {
Optional<std::vector<EntryType>> Entries;
Optional<yaml::BinaryRef> Content;
@ -224,6 +236,7 @@ struct Data {
std::vector<LineTable> DebugLines;
Optional<std::vector<ListTable<RnglistEntry>>> DebugRnglists;
Optional<std::vector<ListTable<LoclistEntry>>> DebugLoclists;
bool isEmpty() const;
@ -254,6 +267,12 @@ LLVM_YAML_IS_SEQUENCE_VECTOR(
LLVM_YAML_IS_SEQUENCE_VECTOR(
llvm::DWARFYAML::ListEntries<DWARFYAML::RnglistEntry>)
LLVM_YAML_IS_SEQUENCE_VECTOR(llvm::DWARFYAML::RnglistEntry)
LLVM_YAML_IS_SEQUENCE_VECTOR(
llvm::DWARFYAML::ListTable<DWARFYAML::LoclistEntry>)
LLVM_YAML_IS_SEQUENCE_VECTOR(
llvm::DWARFYAML::ListEntries<DWARFYAML::LoclistEntry>)
LLVM_YAML_IS_SEQUENCE_VECTOR(llvm::DWARFYAML::LoclistEntry)
LLVM_YAML_IS_SEQUENCE_VECTOR(llvm::DWARFYAML::DWARFOperation)
namespace llvm {
namespace yaml {
@ -322,6 +341,10 @@ template <> struct MappingTraits<DWARFYAML::SegAddrPair> {
static void mapping(IO &IO, DWARFYAML::SegAddrPair &SegAddrPair);
};
template <> struct MappingTraits<DWARFYAML::DWARFOperation> {
static void mapping(IO &IO, DWARFYAML::DWARFOperation &DWARFOperation);
};
template <typename EntryType>
struct MappingTraits<DWARFYAML::ListTable<EntryType>> {
static void mapping(IO &IO, DWARFYAML::ListTable<EntryType> &ListTable);
@ -338,6 +361,10 @@ template <> struct MappingTraits<DWARFYAML::RnglistEntry> {
static void mapping(IO &IO, DWARFYAML::RnglistEntry &RnglistEntry);
};
template <> struct MappingTraits<DWARFYAML::LoclistEntry> {
static void mapping(IO &IO, DWARFYAML::LoclistEntry &LoclistEntry);
};
template <> struct MappingTraits<DWARFYAML::AddrTableEntry> {
static void mapping(IO &IO, DWARFYAML::AddrTableEntry &AddrTable);
};
@ -434,6 +461,25 @@ template <> struct ScalarEnumerationTraits<dwarf::RnglistEntries> {
}
};
#define HANDLE_DW_LLE(unused, name) \
io.enumCase(value, "DW_LLE_" #name, dwarf::DW_LLE_##name);
template <> struct ScalarEnumerationTraits<dwarf::LoclistEntries> {
static void enumeration(IO &io, dwarf::LoclistEntries &value) {
#include "llvm/BinaryFormat/Dwarf.def"
}
};
#define HANDLE_DW_OP(id, name, version, vendor) \
io.enumCase(value, "DW_OP_" #name, dwarf::DW_OP_##name);
template <> struct ScalarEnumerationTraits<dwarf::LocationAtom> {
static void enumeration(IO &io, dwarf::LocationAtom &value) {
#include "llvm/BinaryFormat/Dwarf.def"
io.enumFallback<yaml::Hex8>(value);
}
};
} // end namespace yaml
} // end namespace llvm

137
lib/ObjectYAML/DWARFEmitter.cpp
View File

@ -611,6 +611,39 @@ static Error writeListEntryAddress(StringRef EncodingName, raw_ostream &OS,
return Error::success();
}
static Expected<uint64_t>
writeDWARFExpression(raw_ostream &OS,
const DWARFYAML::DWARFOperation &Operation,
uint8_t AddrSize, bool IsLittleEndian) {
auto CheckOperands = [&](uint64_t ExpectedOperands) -> Error {
return checkOperandCount(dwarf::OperationEncodingString(Operation.Operator),
Operation.Values, ExpectedOperands);
};
uint64_t ExpressionBegin = OS.tell();
writeInteger((uint8_t)Operation.Operator, OS, IsLittleEndian);
switch (Operation.Operator) {
case dwarf::DW_OP_consts:
if (Error Err = CheckOperands(1))
return std::move(Err);
encodeSLEB128(Operation.Values[0], OS);
break;
case dwarf::DW_OP_stack_value:
if (Error Err = CheckOperands(0))
return std::move(Err);
break;
default:
StringRef EncodingStr = dwarf::OperationEncodingString(Operation.Operator);
return createStringError(errc::not_supported,
"DWARF expression: " +
(EncodingStr.empty()
? "0x" + utohexstr(Operation.Operator)
: EncodingStr) +
" is not supported");
}
return OS.tell() - ExpressionBegin;
}
static Expected<uint64_t> writeListEntry(raw_ostream &OS,
const DWARFYAML::RnglistEntry &Entry,
uint8_t AddrSize,
@ -672,6 +705,103 @@ static Expected<uint64_t> writeListEntry(raw_ostream &OS,
return OS.tell() - BeginOffset;
}
static Expected<uint64_t> writeListEntry(raw_ostream &OS,
const DWARFYAML::LoclistEntry &Entry,
uint8_t AddrSize,
bool IsLittleEndian) {
uint64_t BeginOffset = OS.tell();
writeInteger((uint8_t)Entry.Operator, OS, IsLittleEndian);
StringRef EncodingName = dwarf::LocListEncodingString(Entry.Operator);
auto CheckOperands = [&](uint64_t ExpectedOperands) -> Error {
return checkOperandCount(EncodingName, Entry.Values, ExpectedOperands);
};
auto WriteAddress = [&](uint64_t Addr) -> Error {
return writeListEntryAddress(EncodingName, OS, Addr, AddrSize,
IsLittleEndian);
};
auto WriteDWARFOperations = [&]() -> Error {
std::string OpBuffer;
raw_string_ostream OpBufferOS(OpBuffer);
uint64_t DescriptionsLength = 0;
for (const DWARFYAML::DWARFOperation &Op : Entry.Descriptions) {
if (Expected<uint64_t> OpSize =
writeDWARFExpression(OpBufferOS, Op, AddrSize, IsLittleEndian))
DescriptionsLength += *OpSize;
else
return OpSize.takeError();
}
if (Entry.DescriptionsLength)
DescriptionsLength = *Entry.DescriptionsLength;
else
DescriptionsLength = OpBuffer.size();
encodeULEB128(DescriptionsLength, OS);
OS.write(OpBuffer.data(), OpBuffer.size());
return Error::success();
};
switch (Entry.Operator) {
case dwarf::DW_LLE_end_of_list:
if (Error Err = CheckOperands(0))
return std::move(Err);
break;
case dwarf::DW_LLE_base_addressx:
if (Error Err = CheckOperands(1))
return std::move(Err);
encodeULEB128(Entry.Values[0], OS);
break;
case dwarf::DW_LLE_startx_endx:
case dwarf::DW_LLE_startx_length:
case dwarf::DW_LLE_offset_pair:
if (Error Err = CheckOperands(2))
return std::move(Err);
encodeULEB128(Entry.Values[0], OS);
encodeULEB128(Entry.Values[1], OS);
if (Error Err = WriteDWARFOperations())
return std::move(Err);
break;
case dwarf::DW_LLE_default_location:
if (Error Err = CheckOperands(0))
return std::move(Err);
if (Error Err = WriteDWARFOperations())
return std::move(Err);
break;
case dwarf::DW_LLE_base_address:
if (Error Err = CheckOperands(1))
return std::move(Err);
if (Error Err = WriteAddress(Entry.Values[0]))
return std::move(Err);
break;
case dwarf::DW_LLE_start_end:
if (Error Err = CheckOperands(2))
return std::move(Err);
if (Error Err = WriteAddress(Entry.Values[0]))
return std::move(Err);
cantFail(WriteAddress(Entry.Values[1]));
if (Error Err = WriteDWARFOperations())
return std::move(Err);
break;
case dwarf::DW_LLE_start_length:
if (Error Err = CheckOperands(2))
return std::move(Err);
if (Error Err = WriteAddress(Entry.Values[0]))
return std::move(Err);
encodeULEB128(Entry.Values[1], OS);
if (Error Err = WriteDWARFOperations())
return std::move(Err);
break;
}
return OS.tell() - BeginOffset;
}
template <typename EntryType>
Error writeDWARFLists(raw_ostream &OS,
ArrayRef<DWARFYAML::ListTable<EntryType>> Tables,
@ -764,6 +894,12 @@ Error DWARFYAML::emitDebugRnglists(raw_ostream &OS, const Data &DI) {
OS, *DI.DebugRnglists, DI.IsLittleEndian, DI.Is64BitAddrSize);
}
Error DWARFYAML::emitDebugLoclists(raw_ostream &OS, const Data &DI) {
assert(DI.DebugLoclists && "unexpected emitDebugRnglists() call");
return writeDWARFLists<DWARFYAML::LoclistEntry>(
OS, *DI.DebugLoclists, DI.IsLittleEndian, DI.Is64BitAddrSize);
}
std::function<Error(raw_ostream &, const DWARFYAML::Data &)>
DWARFYAML::getDWARFEmitterByName(StringRef SecName) {
auto EmitFunc =
@ -776,6 +912,7 @@ DWARFYAML::getDWARFEmitterByName(StringRef SecName) {
.Case("debug_gnu_pubtypes", DWARFYAML::emitDebugGNUPubtypes)
.Case("debug_info", DWARFYAML::emitDebugInfo)
.Case("debug_line", DWARFYAML::emitDebugLine)
.Case("debug_loclists", DWARFYAML::emitDebugLoclists)
.Case("debug_pubnames", DWARFYAML::emitDebugPubnames)
.Case("debug_pubtypes", DWARFYAML::emitDebugPubtypes)
.Case("debug_ranges", DWARFYAML::emitDebugRanges)

17
lib/ObjectYAML/DWARFYAML.cpp
View File

@ -50,6 +50,8 @@ SetVector<StringRef> DWARFYAML::Data::getNonEmptySectionNames() const {
SecNames.insert("debug_str_offsets");
if (DebugRnglists)
SecNames.insert("debug_rnglists");
if (DebugLoclists)
SecNames.insert("debug_loclists");
return SecNames;
}
@ -74,6 +76,7 @@ void MappingTraits<DWARFYAML::Data>::mapping(IO &IO, DWARFYAML::Data &DWARF) {
IO.mapOptional("debug_addr", DWARF.DebugAddr);
IO.mapOptional("debug_str_offsets", DWARF.DebugStrOffsets);
IO.mapOptional("debug_rnglists", DWARF.DebugRnglists);
IO.mapOptional("debug_loclists", DWARF.DebugLoclists);
IO.setContext(OldContext);
}
@ -235,12 +238,26 @@ void MappingTraits<DWARFYAML::StringOffsetsTable>::mapping(
IO.mapOptional("Offsets", StrOffsetsTable.Offsets);
}
void MappingTraits<DWARFYAML::DWARFOperation>::mapping(
IO &IO, DWARFYAML::DWARFOperation &DWARFOperation) {
IO.mapRequired("Operator", DWARFOperation.Operator);
IO.mapOptional("Values", DWARFOperation.Values);
}
void MappingTraits<DWARFYAML::RnglistEntry>::mapping(
IO &IO, DWARFYAML::RnglistEntry &RnglistEntry) {
IO.mapRequired("Operator", RnglistEntry.Operator);
IO.mapOptional("Values", RnglistEntry.Values);
}
void MappingTraits<DWARFYAML::LoclistEntry>::mapping(
IO &IO, DWARFYAML::LoclistEntry &LoclistEntry) {
IO.mapRequired("Operator", LoclistEntry.Operator);
IO.mapOptional("Values", LoclistEntry.Values);
IO.mapOptional("DescriptionsLength", LoclistEntry.DescriptionsLength);
IO.mapOptional("Descriptions", LoclistEntry.Descriptions);
}
template <typename EntryType>
void MappingTraits<DWARFYAML::ListEntries<EntryType>>::mapping(
IO &IO, DWARFYAML::ListEntries<EntryType> &ListEntries) {

914
test/tools/yaml2obj/ELF/DWARF/debug-loclists.yaml Normal file
View File

@ -0,0 +1,914 @@
## Test that yaml2obj emits a .debug_loclists section when requested.
## a) Generate and verify a little endian DWARF32 .debug_loclists section in a 64-bit object file.
# RUN: yaml2obj --docnum=1 -DENDIAN=ELFDATA2LSB %s -o %t1.dwarf32.le.o
# RUN: llvm-readobj --sections --section-data %t1.dwarf32.le.o | \
# RUN: FileCheck -DSIZE=133 -DADDRALIGN=1 %s --check-prefixes=SHDR,DWARF32-LE
# SHDR: Index: 1
# SHDR-NEXT: Name: .debug_loclists (1)
# SHDR-NEXT: Type: SHT_PROGBITS (0x1)
# SHDR-NEXT: Flags [ (0x0)
# SHDR-NEXT: ]
# SHDR-NEXT: Address: 0x0
# SHDR-NEXT: Offset: 0x40
# SHDR-NEXT: Size: [[SIZE]]
# SHDR-NEXT: Link: 0
# SHDR-NEXT: Info: 0
# SHDR-NEXT: AddressAlignment: [[ADDRALIGN]]
# SHDR-NEXT: EntrySize: 0
# DWARF32-LE-NEXT: SectionData (
# DWARF32-LE-NEXT: 0000: 3D000000 05000800 03000000 0C000000 |=...............|
## ^------- unit_length (4-byte)
## ^--- version (2-byte)
## ^- address_size (1-byte)
## ^- segment_selector_size (1-byte)
## ^------- offset_entry_count (4-byte)
## ^------- offsets[0] (4-byte)
# DWARF32-LE-NEXT: 0010: 1B000000 2F000000 01B42402 B424A186 |..../.....$..$..|
## ^------- offsets[1] (4-byte)
## ^------- offsets[2] (4-byte)
## ^- DW_LLE_base_addressx
## ^--- operands[0] (ULEB128) 0x1234
## ^- DW_LLE_startx_endx
## ^--- operands[0] (ULEB128) 0x1234
## ^--- operands[1] (ULEB128) 0x4321
# DWARF32-LE-NEXT: 0020: 010411B4 249F0003 B424A186 0102117D |....$....$.....}|
## --
## ^- location descriptions length (ULEB128) 0x04
## ^- DW_OP_consts
## ^---- operands[0] (SLEB128) +0x1234
## ^- DW_OP_stack_value
## ^- DW_LLE_end_of_list
## ^- DW_LLE_startx_length
## ^--- operands[0] (ULEB128) 0x1234
## ^------ operands[1] (ULEB128) 0x4321
## ^- location descriptions length (ULEB128) 0x02
## ^- DW_OP_consts
## ^- operands[0] (SLEB128) -0x03
# DWARF32-LE-NEXT: 0030: 04B424A1 86010311 B4240005 0311B424 |..$......$.....$|
## ^- DW_LLE_offset_pair
## ^--- operands[0] (ULEB128) 0x1234
## ^------ operands[1] (ULEB128) 0x4321
## ^- location descriptions length (ULEB128) 0x03
## ^- DW_OP_consts
## ^--- operands[0] (SLEB128) +0x1234
## ^- DW_LLE_end_of_list
## ^- DW_LLE_default_location
## ^- location descriptions length (ULEB128) 0x03
## ^- DW_OP_consts
## ^--- operands[0] (SLEB128) +0x1234
# DWARF32-LE-NEXT: 0040: 00400000 00050008 00020000 00080000 |.@..............|
## ^- DW_LLE_end_of_list
## ^-------- unit_length (4-byte)
## ^--- version (2-byte)
## ^- address_size (1-byte)
## ^- segment_selector_size (1-byte)
## ^-------- offset_entry_count (4-byte)
## ^----- offsets[0] (4-byte)
# DWARF32-LE-NEXT: 0050: 00270000 00063412 00000000 00000734 |.'....4........4|
## --
## ^-------- offsets[1] (4-byte)
## ^- DW_LLE_base_address
## ^----------------- operands[0] (8-byte)
## ^- DW_LLE_start_end
## ^- operands[0] (8-byte)
# DWARF32-LE-NEXT: 0060: 12000000 00000021 43000000 00000003 |.......!C.......|
## ---------------
## ^----------------- operands[1] (8-byte)
## ^- location descriptions length (ULEB128) 0x03
# DWARF32-LE-NEXT: 0070: 11B42400 08341200 00000000 00A18601 |..$..4..........|
## ^- DW_OP_consts
## ^--- operands[0] (SLEB128) +0x1234
## ^- DW_LLE_end_of_list
## ^- DW_LLE_start_length
## ^----------------- operands[0] (8-byte)
## ^----- operands[1] (LEB128) 0x4321
# DWARF32-LE-NEXT: 0080: 0311B424 00 |...$.|
## ^- location descriptions length (ULEB128) 0x03
## ^- DW_OP_consts
## ^--- operands[0] (SLEB128) +0x1234
## ^- DW_LLE_end_of_list
# DWARF32-LE-NEXT: )
--- !ELF
FileHeader:
Class: ELFCLASS64
Data: [[ENDIAN]]
Type: ET_EXEC
Machine: EM_X86_64
DWARF:
debug_loclists:
- Lists:
- Entries:
- Operator: DW_LLE_base_addressx
Values: [ 0x1234 ]
- Operator: DW_LLE_startx_endx
Values: [ 0x1234, 0x4321 ]
Descriptions:
- Operator: DW_OP_consts
Values: [ 0x1234 ]
- Operator: DW_OP_stack_value
- Operator: DW_LLE_end_of_list
- Entries:
- Operator: DW_LLE_startx_length
Values: [ 0x1234, 0x4321 ]
Descriptions:
- Operator: DW_OP_consts
## Test a negative number (-3).
Values: [ 0xfffffffffffffffd ]
- Operator: DW_LLE_offset_pair
Values: [ 0x1234, 0x4321 ]
Descriptions:
- Operator: DW_OP_consts
Values: [ 0x1234 ]
- Operator: DW_LLE_end_of_list
- Entries:
- Operator: DW_LLE_default_location
Descriptions:
- Operator: DW_OP_consts
Values: [ 0x1234 ]
- Operator: DW_LLE_end_of_list
- Lists:
- Entries:
- Operator: DW_LLE_base_address
Values: [ 0x1234 ]
- Operator: DW_LLE_start_end
Values: [ 0x1234, 0x4321 ]
Descriptions:
- Operator: DW_OP_consts
Values: [ 0x1234 ]
- Operator: DW_LLE_end_of_list
- Entries:
- Operator: DW_LLE_start_length
Values: [ 0x1234, 0x4321 ]
Descriptions:
- Operator: DW_OP_consts
Values: [ 0x1234 ]
- Operator: DW_LLE_end_of_list
## b) Generate and verify a big endian DWARF32 .debug_loclists section in a 64-bit object file.
# RUN: yaml2obj --docnum=1 -DENDIAN=ELFDATA2MSB %s -o %t.dwarf32.be.o
# RUN: llvm-readobj --sections --section-data %t.dwarf32.be.o | \
# RUN: FileCheck -DSIZE=133 -DADDRALIGN=1 %s --check-prefixes=SHDR,DWARF32-BE
# DWARF32-BE-NEXT: SectionData (
# DWARF32-BE-NEXT: 0000: 0000003D 00050800 00000003 0000000C |...=............|
## ^------- unit_length (4-byte)
## ^--- version (2-byte)
## ^- address_size (1-byte)
## ^- segment_selector_size (1-byte)
## ^------- offset_entry_count (4-byte)
## ^------- offsets[0] (4-byte)
# DWARF32-BE-NEXT: 0010: 0000001B 0000002F 01B42402 B424A186 |......./..$..$..|
## ^------- offsets[1] (4-byte)
## ^------- offsets[2] (4-byte)
## ^- DW_LLE_base_addressx
## ^--- operands[0] (ULEB128) 0x1234
## ^- DW_LLE_startx_endx
## ^--- operands[0] (ULEB128) 0x1234
## ^--- operands[1] (ULEB128) 0x4321
# DWARF32-BE-NEXT: 0020: 010411B4 249F0003 B424A186 0102117D |....$....$.....}|
## --
## ^- location descriptions length (ULEB128) 0x04
## ^- DW_OP_consts
## ^---- operands[0] (SLEB128) +0x1234
## ^- DW_OP_stack_value
## ^- DW_LLE_end_of_list
## ^- DW_LLE_startx_length
## ^--- operands[0] (ULEB128) 0x1234
## ^------ operands[1] (ULEB128) 0x4321
## ^- location descriptions length (ULEB128) 0x02
## ^- DW_OP_consts
## ^- operands[0] (SLEB128) -0x03
# DWARF32-BE-NEXT: 0030: 04B424A1 86010311 B4240005 0311B424 |..$......$.....$|
## ^- DW_LLE_offset_pair
## ^--- operands[0] (ULEB128) 0x1234
## ^------ operands[1] (ULEB128) 0x4321
## ^- location descriptions length (ULEB128) 0x03
## ^- DW_OP_consts
## ^--- operands[0] (SLEB128) +0x1234
## ^- DW_LLE_end_of_list
## ^- DW_LLE_default_location
## ^- location descriptions length (ULEB128) 0x03
## ^- DW_OP_consts
## ^--- operands[0] (SLEB128) +0x1234
# DWARF32-BE-NEXT: 0040: 00000000 40000508 00000000 02000000 |....@...........|
## ^- DW_LLE_end_of_list
## ^-------- unit_length (4-byte)
## ^--- version (2-byte)
## ^- address_size (1-byte)
## ^- segment_selector_size (1-byte)
## ^-------- offset_entry_count (4-byte)
## ^----- offsets[0] (4-byte)
# DWARF32-BE-NEXT: 0050: 08000000 27060000 00000000 12340700 |....'........4..|
## --
## ^-------- offsets[1] (4-byte)
## ^- DW_LLE_base_address
## ^----------------- operands[0] (8-byte)
## ^- DW_LLE_start_end
## ^- operands[0] (8-byte)
# DWARF32-BE-NEXT: 0060: 00000000 00123400 00000000 00432103 |......4......C!.|
## ---------------
## ^----------------- operands[1] (8-byte)
## ^- location descriptions length (ULEB128) 0x03
# DWARF32-BE-NEXT: 0070: 11B42400 08000000 00000012 34A18601 |..$.........4...|
## ^- DW_OP_consts
## ^--- operands[0] (SLEB128) +0x1234
## ^- DW_LLE_end_of_list
## ^- DW_LLE_start_length
## ^----------------- operands[0] (8-byte)
## ^----- operands[1] (LEB128) 0x4321
# DWARF32-BE-NEXT: 0080: 0311B424 00 |...$.|
## ^- location descriptions length (ULEB128) 0x03
## ^- DW_OP_consts
## ^--- operands[0] (SLEB128) +0x1234
## ^- DW_LLE_end_of_list
# DWARF32-BE-NEXT: )
## c) Generate and verify a little endian DWARF64 .debug_loclists section in a 64-bit object file.
# RUN: yaml2obj --docnum=2 -DENDIAN=ELFDATA2LSB %s -o %t2.dwarf64.le.o
# RUN: llvm-readobj --sections --section-data %t2.dwarf64.le.o | \
# RUN: FileCheck -DSIZE=47 -DADDRALIGN=1 %s --check-prefixes=SHDR,DWARF64-LE
# DWARF64-LE-NEXT: SectionData (
# DWARF64-LE-NEXT: 0000: FFFFFFFF 23000000 00000000 05000800 |....#...........|
## ^------------------------- unit_length (12-byte)
## ^--- version (2-byte)
## ^- address_size (1-byte)
## ^- segment_selector_size (1-byte)
# DWARF64-LE-NEXT: 0010: 02000000 10000000 00000000 1A000000 |................|
## ^------- offset_entry_count (4-byte)
## ^---------------- offsets[0] (8-byte)
## ^------- offsets[1] (8-byte)
# DWARF64-LE-NEXT: 0020: 00000000 02B424A1 86010311 B42400 |......$......$.|
## --------
## ^- DW_LLE_startx_endx
## ^--- operands[0] (ULEB128) 0x1234
## ^------ operands[1] (ULEB128) 0x4321
## ^- location descriptions length (ULEB128) 0x03
## ^- DW_OP_consts
## ^--- operands[0] (SLEB128) +0x1234
## ^- DW_LLE_end_of_list
# DWARF64-LE-NEXT: )
--- !ELF
FileHeader:
Class: ELFCLASS64
Data: [[ENDIAN]]
Type: ET_EXEC
Machine: EM_X86_64
DWARF:
debug_loclists:
- Format: DWARF64
Lists:
- Entries:
- Operator: DW_LLE_startx_endx
Values: [ 0x1234, 0x4321 ]
Descriptions:
- Operator: DW_OP_consts
Values: [ 0x1234 ]
- Entries:
- Operator: DW_LLE_end_of_list
## d) Generate and verify a big endian DWARF64 .debug_loclists section in a 64-bit object file.
# RUN: yaml2obj --docnum=2 -DENDIAN=ELFDATA2MSB %s -o %t2.dwarf64.be.o
# RUN: llvm-readobj --sections --section-data %t2.dwarf64.be.o | \
# RUN: FileCheck -DSIZE=47 -DADDRALIGN=1 %s --check-prefixes=SHDR,DWARF64-BE
# DWARF64-BE-NEXT: SectionData (
# DWARF64-BE-NEXT: 0000: FFFFFFFF 00000000 00000023 00050800 |...........#....|
## ^------------------------- unit_length (12-byte)
## ^--- version (2-byte)
## ^- address_size (1-byte)
## ^- segment_selector_size (1-byte)
# DWARF64-BE-NEXT: 0010: 00000002 00000000 00000010 00000000 |................|
## ^------- offset_entry_count (4-byte)
## ^---------------- offsets[0] (8-byte)
## ^------- offsets[1] (8-byte)
# DWARF64-BE-NEXT: 0020: 0000001A 02B424A1 86010311 B42400 |......$......$.|
## --------
## ^- DW_LLE_startx_endx
## ^--- operands[0] (ULEB128) 0x1234
## ^------ operands[1] (ULEB128) 0x4321
## ^- location descriptions length (ULEB128) 0x03
## ^- DW_OP_consts
## ^--- operands[0] (SLEB128) +0x1234
## ^- DW_LLE_end_of_list
# DWARF64-BE-NEXT: )
## e) Test that the length, version, segment_selector_size, address_size, offset_entry_count,
## offsets and location descriptions length fields can be specified manually.
# RUN: yaml2obj --docnum=3 %s -o %t3.o
# RUN: llvm-readelf --hex-dump=.debug_loclists %t3.o | \
# RUN: FileCheck %s --check-prefix=OVERWRITE
# OVERWRITE: Hex dump of section '.debug_loclists':
# OVERWRITE-NEXT: 0x00000000 34120000 06000303 04000000 01000000 4...............
## ^------- unit_length (4-byte) 0x1234
## ^--- version (2-byte) 0x06
## ^- address_size (1-byte) 0x03
## ^- segment_selector_size (1-byte) 0x03
## ^------- offset_entry_count (4-byte) 0x04
## ^------- offsets[0] (4-byte) 0x01
# OVERWRITE-NEXT: 0x00000010 02b424a1 8601a186 019f00 ..$........
## ^- DW_LLE_startx_endx
## ^--- operands[0] (ULEB128) 0x1234
## ^------ operands[1] (ULEB128) 0x4321
## ^------ location descriptions length (ULEB128) 0x4321
## ^- DW_OP_stack_value
## ^- DW_LLE_end_of_list
--- !ELF
FileHeader:
Class: ELFCLASS64
Data: ELFDATA2LSB
Type: ET_EXEC
Machine: EM_X86_64
DWARF:
debug_loclists:
- Length: 0x1234
Version: 6
AddressSize: 3
SegmentSelectorSize: 3
OffsetEntryCount: 4
Offsets: [ 0x01 ]
Lists:
- Entries:
- Operator: DW_LLE_startx_endx
Values: [ 0x1234, 0x4321 ]
DescriptionsLength: 0x4321
Descriptions:
- Operator: DW_OP_stack_value
- Entries:
- Operator: DW_LLE_end_of_list
## f) Test that location descriptions can be omitted from the YAML description.
# RUN: yaml2obj --docnum=4 %s -o %t4.o
# RUN: llvm-readelf --hex-dump=.debug_loclists %t4.o | \
# RUN: FileCheck %s --check-prefix=OMIT-DESCRIPTIONS
# OMIT-DESCRIPTIONS: Hex dump of section '.debug_loclists':
# OMIT-DESCRIPTIONS-NEXT: 0x00000000 42000000 05000800 01000000 04000000 B...............
# OMIT-DESCRIPTIONS-NEXT: 0x00000010 02b424a1 86010003 b424a186 010004b4 ..$......$......
## ^- DW_LLE_startx_endx
## ^--- operands[0] (ULEB128) 0x1234
## ^------ operands[1] (ULEB128) 0x4321
## ^- location descriptions length (ULEB128) 0x00
## ^- DW_LLE_startx_length
## ^--- operands[0] (ULEB128) 0x1234
## ^------ operands[1] (ULEB128) 0x4321
## ^- location descriptions length (ULEB128) 0x00
## ^- DW_LLE_offset_pair
## ^- operands[0] (ULEB128) 0x1234
# OMIT-DESCRIPTIONS-NEXT: 0x00000020 24a18601 00050007 34120000 00000000 $.......4.......
## --
## ^----- operands[1] (ULEB128) 0x4321
## ^- location descriptions length (ULEB128) 0x00
## ^- DW_LLE_default_location
## ^- location descriptions length (ULEB128) 0x00
## ^- DW_LLE_start_end
## ^---------------- operands[0] (8-byte)
# OMIT-DESCRIPTIONS-NEXT: 0x00000030 21430000 00000000 00083412 00000000 !C........4.....
## ^---------------- operands[1] (8-byte)
## ^- location descriptions length (ULEB128) 0x00
## ^- DW_LLE_start_length
## ^------------ operands[0] (8-byte)
# OMIT-DESCRIPTIONS-NEXT: 0x00000040 0000a186 0100 ......
## ----
## ^------ operands[1] (ULEB128) 0x4321
## ^- location descriptions length (ULEB128) 0x00
--- !ELF
FileHeader:
Class: ELFCLASS64
Data: ELFDATA2LSB
Type: ET_EXEC
Machine: EM_X86_64
DWARF:
debug_loclists:
- Lists:
- Entries:
- Operator: DW_LLE_startx_endx
Values: [ 0x1234, 0x4321 ]
- Operator: DW_LLE_startx_length
Values: [ 0x1234, 0x4321 ]
- Operator: DW_LLE_offset_pair
Values: [ 0x1234, 0x4321 ]
- Operator: DW_LLE_default_location
- Operator: DW_LLE_start_end
Values: [ 0x1234, 0x4321 ]
- Operator: DW_LLE_start_length
Values: [ 0x1234, 0x4321 ]
## g) Test that the default value of the address_size field in a 32-bit object file is 4.
# RUN: yaml2obj --docnum=5 %s -o %t5.o
# RUN: llvm-readelf --hex-dump=.debug_loclists %t5.o | \
# RUN: FileCheck %s --check-prefix=ADDRSIZE32
# ADDRSIZE32: Hex dump of section '.debug_loclists':
# ADDRSIZE32-NEXT: 0x00000000 24000000 05000400 01000000 04000000 $...............
## ^- address_size (1-byte) 0x04
# ADDRSIZE32-NEXT: 0x00000010 06341200 00073412 00002143 00000008 .4....4...!C....
## ^- DW_LLE_base_address
## ^-------- operands[0] (4-byte)
## ^- DW_LLE_start_end
## ^-------- operands[0] (4-byte)
## ^-------- operands[1] (4-byte)
## ^- counted location description
## ^- DW_LLE_start_length
# ADDRSIZE32-NEXT: 0x00000020 34120000 a1860100 4.......
## ^------- operands[0] (4-byte)
## ^----- operands[1] (ULEB128) 0x4321
## ^- counted location description
--- !ELF
FileHeader:
Class: ELFCLASS32
Data: ELFDATA2LSB
Type: ET_EXEC
Machine: EM_X86_64
DWARF:
debug_loclists:
- Lists:
- Entries:
- Operator: DW_LLE_base_address
Values: [ 0x1234 ]
- Operator: DW_LLE_start_end
Values: [ 0x1234, 0x4321 ]
- Operator: DW_LLE_start_length
Values: [ 0x1234, 0x4321 ]
## h) Test that the address_size field can be specified manually and the size of
## corresponding operands will be changed accordingly.
# RUN: yaml2obj --docnum=6 %s -o %t6.o
# RUN: llvm-readelf --hex-dump=.debug_loclists %t6.o | \
# RUN: FileCheck %s --check-prefix=ADDRSIZE32
--- !ELF
FileHeader:
Class: ELFCLASS64
Data: ELFDATA2LSB
Type: ET_EXEC
Machine: EM_X86_64
DWARF:
debug_loclists:
- AddressSize: 4
Lists:
- Entries:
- Operator: DW_LLE_base_address
Values: [ 0x1234 ]
- Operator: DW_LLE_start_end
Values: [ 0x1234, 0x4321 ]
- Operator: DW_LLE_start_length
Values: [ 0x1234, 0x4321 ]
## i) Test that yaml2obj emits an error message if we try to assign an invalid value to
## 'AddressSize' when there is an entry whose operands contain address.
# RUN: not yaml2obj -DOPERATOR=base_address -DVALUES=[0x01] --docnum=7 %s 2>&1 | \
# RUN: FileCheck -DOPERATOR=base_address %s --check-prefix=INVALID-ADDRSIZE
# RUN: not yaml2obj -DOPERATOR=start_end -DVALUES=[0x01,0x02] --docnum=7 %s 2>&1 | \
# RUN: FileCheck -DOPERATOR=start_end %s --check-prefix=INVALID-ADDRSIZE
# RUN: not yaml2obj -DOPERATOR=start_length -DVALUES=[0x01,0x02] --docnum=7 %s 2>&1 | \
# RUN: FileCheck -DOPERATOR=start_length %s --check-prefix=INVALID-ADDRSIZE
# INVALID-ADDRSIZE: yaml2obj: error: unable to write address for the operator DW_LLE_[[OPERATOR]]: invalid integer write size: 3
--- !ELF
FileHeader:
Class: ELFCLASS64
Data: ELFDATA2LSB
Type: ET_EXEC
Machine: EM_X86_64
DWARF:
debug_loclists:
- AddressSize: 3
Lists:
- Entries:
- Operator: DW_LLE_[[OPERATOR]]
Values: [[VALUES]]
## j) Test that yaml2obj emits an error message if we specify invalid numbers of operands
## for a location list encoding.
# RUN: not yaml2obj -DOPERATOR=end_of_list -DVALUES=[0x01] --docnum=8 %s 2>&1 | \
# RUN: FileCheck -DOPERATOR=end_of_list -DACTUAL=1 -DEXPECTED=0 %s --check-prefix=INVALID-LLE-OPERANDS
# RUN: not yaml2obj -DOPERATOR=base_addressx -DVALUES=[] --docnum=8 %s 2>&1 | \
# RUN: FileCheck -DOPERATOR=base_addressx -DACTUAL=0 -DEXPECTED=1 %s --check-prefix=INVALID-LLE-OPERANDS
# RUN: not yaml2obj -DOPERATOR=startx_endx -DVALUES=[0x01] --docnum=8 %s 2>&1 | \
# RUN: FileCheck -DOPERATOR=startx_endx -DACTUAL=1 -DEXPECTED=2 %s --check-prefix=INVALID-LLE-OPERANDS
# RUN: not yaml2obj -DOPERATOR=startx_length -DVALUES=[0x01] --docnum=8 %s 2>&1 | \
# RUN: FileCheck -DOPERATOR=startx_length -DACTUAL=1 -DEXPECTED=2 %s --check-prefix=INVALID-LLE-OPERANDS
# RUN: not yaml2obj -DOPERATOR=offset_pair -DVALUES=[] --docnum=8 %s 2>&1 | \
# RUN: FileCheck -DOPERATOR=offset_pair -DACTUAL=0 -DEXPECTED=2 %s --check-prefix=INVALID-LLE-OPERANDS
# RUN: not yaml2obj -DOPERATOR=default_location -DVALUES=[0x01] --docnum=8 %s 2>&1 | \
# RUN: FileCheck -DOPERATOR=default_location -DACTUAL=1 -DEXPECTED=0 %s --check-prefix=INVALID-LLE-OPERANDS
# RUN: not yaml2obj -DOPERATOR=base_address -DVALUES=[0x01,0x02] --docnum=8 %s 2>&1 | \
# RUN: FileCheck -DOPERATOR=base_address -DACTUAL=2 -DEXPECTED=1 %s --check-prefix=INVALID-LLE-OPERANDS
# RUN: not yaml2obj -DOPERATOR=start_end -DVALUES=[0x01,0x02,0x03] --docnum=8 %s 2>&1 | \
# RUN: FileCheck -DOPERATOR=start_end -DACTUAL=3 -DEXPECTED=2 %s --check-prefix=INVALID-LLE-OPERANDS
# RUN: not yaml2obj -DOPERATOR=start_length -DVALUES=[0x01] --docnum=8 %s 2>&1 | \
# RUN: FileCheck -DOPERATOR=start_length -DACTUAL=1 -DEXPECTED=2 %s --check-prefix=INVALID-LLE-OPERANDS
# INVALID-LLE-OPERANDS: yaml2obj: error: invalid number ([[ACTUAL]]) of operands for the operator: DW_LLE_[[OPERATOR]], [[EXPECTED]] expected
--- !ELF
FileHeader:
Class: ELFCLASS64
Data: ELFDATA2LSB
Type: ET_EXEC
Machine: EM_X86_64
DWARF:
debug_loclists:
- Lists:
- Entries:
- Operator: DW_LLE_[[OPERATOR]]
Values: [[VALUES]]
## k) Test that yaml2obj emits an error message if we specify invalid numbers of operands
## for a DWARF expression operator.
# RUN: not yaml2obj --docnum=9 -DOPERATOR=consts -DVALUES=[0x01,0x02] %s 2>&1 | \
# RUN: FileCheck -DACTUAL=2 -DEXPECTED=1 -DOPERATOR=consts %s --check-prefix=INVALID-OP-OPERANDS
# RUN: not yaml2obj --docnum=9 -DOPERATOR=stack_value -DVALUES=[0x01] %s 2>&1 | \
# RUN: FileCheck -DACTUAL=1 -DEXPECTED=0 -DOPERATOR=stack_value %s --check-prefix=INVALID-OP-OPERANDS
# INVALID-OP-OPERANDS: yaml2obj: error: invalid number ([[ACTUAL]]) of operands for the operator: DW_OP_[[OPERATOR]], [[EXPECTED]] expected
--- !ELF
FileHeader:
Class: ELFCLASS64
Data: ELFDATA2LSB
Type: ET_EXEC
Machine: EM_X86_64
DWARF:
debug_loclists:
- Lists:
- Entries:
- Operator: DW_LLE_startx_endx
Values: [ 0x01, 0x02 ]
Descriptions:
- Operator: DW_OP_[[OPERATOR]]
Values: [[VALUES]]
## l) Test that an empty list is allowed for a location list table.
# RUN: yaml2obj --docnum=10 %s -o %t10.o
# RUN: llvm-readelf --hex-dump=.debug_loclists %t10.o | \
# RUN: FileCheck %s --check-prefix=EMPTY-LIST
# EMPTY-LIST: Hex dump of section '.debug_loclists':
# EMPTY-LIST-NEXT: 0x00000000 08000000 05000800 00000000 ............
## ^------- unit_length (4-byte)
## ^--- version (2-byte)
## ^- address_size (1-byte)
## ^- segment_selector_size (1-byte)
## ^------- offset_entry_count (4-byte)
--- !ELF
FileHeader:
Class: ELFCLASS64
Data: ELFDATA2LSB
Type: ET_EXEC
Machine: EM_X86_64
DWARF:
debug_loclists:
- Lists: []
## m) Generate the .debug_loclists section from raw section content.
# RUN: yaml2obj --docnum=11 %s -o %t11.o
# RUN: llvm-readobj --sections --section-data %t11.o | \
# RUN: FileCheck %s -DSIZE=3 -DADDRALIGN=0 --check-prefixes=SHDR,ARBITRARY-CONTENT
# ARBITRARY-CONTENT: SectionData (
# ARBITRARY-CONTENT-NEXT: 0000: 112233
# ARBITRARY-CONTENT-NEXT: )
--- !ELF
FileHeader:
Class: ELFCLASS64
Data: ELFDATA2LSB
Type: ET_EXEC
Machine: EM_X86_64
Sections:
- Name: .debug_loclists
Type: SHT_PROGBITS
Content: "112233"
## n) Generate the .debug_loclists section when the "Size" is specified.
# RUN: yaml2obj --docnum=12 %s -o %t12.o
# RUN: llvm-readelf --hex-dump=.debug_loclists %t12.o | \
# RUN: FileCheck %s --check-prefix=SIZE
# SIZE: Hex dump of section '.debug_loclists':
# SIZE-NEXT: 0x00000000 00000000 00000000 00000000 00000000 ................
# SIZE-EMPTY:
--- !ELF
FileHeader:
Class: ELFCLASS64
Data: ELFDATA2LSB
Type: ET_EXEC
Machine: EM_X86_64
Sections:
- Name: .debug_loclists
Type: SHT_PROGBITS
Size: 0x10
## o) Test that yaml2obj emits an error message when both the "Size" and the
## "debug_loclists" entry are specified at the same time.
# RUN: not yaml2obj --docnum=13 %s 2>&1 | FileCheck %s --check-prefix=ERROR
# ERROR: yaml2obj: error: cannot specify section '.debug_loclists' contents in the 'DWARF' entry and the 'Content' or 'Size' in the 'Sections' entry at the same time
--- !ELF
FileHeader:
Class: ELFCLASS64
Data: ELFDATA2LSB
Type: ET_EXEC
Machine: EM_X86_64
Sections:
- Name: .debug_loclists
Type: SHT_PROGBITS
Size: 0x10
DWARF:
debug_loclists:
- Lists: []
## p) Test that yaml2obj emits an error message when both the "Content" and the
## "debug_loclists" entry are specified at the same time.
# RUN: not yaml2obj --docnum=14 %s 2>&1 | FileCheck %s --check-prefix=ERROR
--- !ELF
FileHeader:
Class: ELFCLASS64
Data: ELFDATA2LSB
Type: ET_EXEC
Machine: EM_X86_64
Sections:
- Name: .debug_loclists
Type: SHT_PROGBITS
Content: "00"
DWARF:
debug_loclists:
- Lists: []
## q) Test that all the properties can be overridden by the section header when
## the "debug_loclists" entry doesn't exist.
# RUN: yaml2obj --docnum=15 %s -o %t15.o
# RUN: llvm-readelf --sections %t15.o | FileCheck %s --check-prefix=OVERRIDDEN
# OVERRIDDEN: [Nr] Name Type Address Off Size ES Flg Lk Inf Al
# OVERRIDDEN: [ 1] .debug_loclists STRTAB 0000000000002020 000050 00000c 01 A 2 1 2
# OVERRIDDEN-NEXT: [ 2] .sec STRTAB 0000000000000000 00005c 000000 00 0 0 0
--- !ELF
FileHeader:
Class: ELFCLASS64
Data: ELFDATA2LSB
Type: ET_EXEC
Machine: EM_X86_64
Sections:
- Name: .debug_loclists
Type: SHT_STRTAB ## SHT_PROGBITS by default.
Flags: [SHF_ALLOC] ## 0 by default.
Link: .sec ## 0 by default.
EntSize: 1 ## 0 by default.
Info: 1 ## 0 by default.
AddressAlign: 2 ## 0 by default.
Address: 0x2020 ## 0x00 by default.
Offset: 0x50 ## 0x40 for the first section.
Size: 0x0c ## Set the "Size" so that we can reuse the check tag "OVERRIDDEN".
- Name: .sec ## Linked by .debug_loclists.
Type: SHT_STRTAB
## r) Test that all the properties can be overridden by the section header when
## the "debug_loclists" entry exists.
# RUN: yaml2obj --docnum=16 %s -o %t16.o
# RUN: llvm-readelf --sections %t16.o | FileCheck %s --check-prefix=OVERRIDDEN
--- !ELF
FileHeader:
Class: ELFCLASS64
Data: ELFDATA2LSB
Type: ET_EXEC
Machine: EM_X86_64
Sections:
- Name: .debug_loclists
Type: SHT_STRTAB ## SHT_PROGBITS by default.
Flags: [SHF_ALLOC] ## 0 by default.
Link: .sec ## 0 by default.
EntSize: 1 ## 0 by default.
Info: 1 ## 0 by default.
AddressAlign: 2 ## 1 by default.
Address: 0x2020 ## 0x00 by default.
Offset: 0x50 ## 0x40 for the first section.
- Name: .sec ## Linked by .debug_loclists.
Type: SHT_STRTAB
DWARF:
debug_loclists:
- Lists: []
## s) Test that the .debug_loclists section header is emitted if the "debug_loclists"
## entry is empty.
# RUN: yaml2obj --docnum=17 %s -o %t17.o
# RUN: llvm-readobj --sections --section-data %t17.o | \
# RUN: FileCheck -DSIZE=0 -DADDRALIGN=1 %s --check-prefixes=SHDR,EMPTY-CONTENT
# EMPTY-CONTENT-NEXT: SectionData (
# EMPTY-CONTENT-NEXT: )
--- !ELF
FileHeader:
Class: ELFCLASS64
Data: ELFDATA2LSB
Type: ET_EXEC
Machine: EM_X86_64
DWARF:
debug_loclists: []
## t) Test that yaml2obj emits an error message if we use an unimplemented DWARF expression
## operator.
# RUN: not yaml2obj --docnum=18 -DOP=0x01 %s 2>&1 | \
# RUN: FileCheck -DOP=0x1 %s --check-prefix=UNSUPPORTED-OP
# UNSUPPORTED-OP: yaml2obj: error: DWARF expression: [[OP]] is not supported
# RUN: not yaml2obj --docnum=18 -DOP=DW_OP_entry_value %s 2>&1 | \
# RUN: FileCheck -DOP=DW_OP_entry_value %s --check-prefix=UNSUPPORTED-OP
--- !ELF
FileHeader:
Class: ELFCLASS64
Data: ELFDATA2LSB
Type: ET_EXEC
Machine: EM_X86_64
DWARF:
debug_loclists:
- Lists:
- Entries:
- Operator: DW_LLE_default_location
Descriptions:
- Operator: [[OP]]
## u) Test that we are able to generate a location list via raw binary data.
# RUN: yaml2obj --docnum=19 %s -o %t19.o
# RUN: llvm-readelf --hex-dump=.debug_loclists %t19.o | \
# RUN: FileCheck %s --check-prefix=CUSTOM-LIST
# CUSTOM-LIST: Hex dump of section '.debug_loclists':
# CUSTOM-LIST-NEXT: 0x00000000 2a000000 05000800 03000000 0c000000 *...............
## ^------- unit_length (4-byte)
## ^--- version (2-byte)
## ^- address_size (1-byte)
## ^- segment_selector_size (1-byte)
## ^------- offset_entry_count (4-byte)
## ^------- offsets[0] (4-byte)
# CUSTOM-LIST-NEXT: 0x00000010 12000000 1a000000 02b424b4 24001234 ..........$.$..4
## ^------- offsets[1] (4-byte)
## ^------- offsets[2] (4-byte)
## ^- DW_LLE_startx_endx
## ^--- operands[0] (ULEB128) 0x1234
## ^---- operands[1] (ULEB128) 0x1234
## ^- location descriptions length (ULEB128) 0x00
## ^--- custom list content
# CUSTOM-LIST-NEXT: 0x00000020 567890ab cdefabcd ef123456 7890 Vx........4Vx.
## -------------
## ^----------------- custom list content
--- !ELF
FileHeader:
Class: ELFCLASS64
Data: ELFDATA2LSB
Type: ET_EXEC
Machine: EM_X86_64
DWARF:
debug_loclists:
- Lists:
- Entries:
- Operator: DW_LLE_startx_endx
Values: [ 0x1234, 0x1234 ]
- Content: '1234567890abcdef'
- Content: 'abcdef1234567890'
## v) Test that yaml2obj emits an error message when 'Content' and 'Entries' are specified
## at the same time.
# RUN: not yaml2obj --docnum=20 %s 2>&1 | FileCheck %s --check-prefix=ERR
# ERR: YAML:{{.*}}: error: Entries and Content can't be used together
# ERR-NEXT: - Entries: []
# ERR-NEXT: ^
--- !ELF
FileHeader:
Class: ELFCLASS64
Data: ELFDATA2LSB
Type: ET_EXEC
Machine: EM_X86_64
DWARF:
debug_loclists:
- Lists:
- Entries: []
Content: ''
## w) Test that when the "OffsetEntryCount" is specified to be 0 and "Offsets" is not specified,
## the offsets array is not emitted.
# RUN: yaml2obj --docnum=21 -DOFFSETENTRIES=0 %s -o %t21.o
# RUN: llvm-readelf --hex-dump=.debug_loclists %t21.o | \
# RUN: FileCheck %s --check-prefix=NO-OFFSETS
# NO-OFFSETS: Hex dump of section '.debug_loclists':
# NO-OFFSETS-NEXT: 0x00000000 0e000000 05000800 00000000 01010201 ................
## ^------- unit_length (4-byte)
## ^--- version (2-byte)
## ^- address_size (1-byte)
## ^- segment_selector_size (1-byte)
## ^------- offset_entry_count (4-byte)
## ^- DW_LLE_base_addressx
## ^- operands[0] (ULEB128) 0x01
## ^- DW_LLE_startx_endx
## ^- operands[0] (ULEB128) 0x01
# NO-OFFSETS-NEXT: 0x00000010 0200 ..
## ^- operands[1] (ULEB128) 0x02
## ^- location descriptions length (ULEB128) 0x00
--- !ELF
FileHeader:
Class: ELFCLASS64
Data: ELFDATA2LSB
Type: ET_EXEC
Machine: EM_X86_64
DWARF:
debug_loclists:
- OffsetEntryCount: [[OFFSETENTRIES=<none>]]
Offsets: [[OFFSETS=<none>]]
Lists:
- Entries:
- Operator: DW_LLE_base_addressx
Values: [ 0x01 ]
- Operator: DW_LLE_startx_endx
Values: [ 0x01, 0x02 ]
## x) Test that when the "Offsets" entry is specified to be empty and the "OffsetEntryCount" is not specified,
## the offsets array will be omitted.
# RUN: yaml2obj --docnum=21 -DOFFSETS=[] %s -o %t22.o
# RUN: llvm-readelf --hex-dump=.debug_loclists %t22.o | \
# RUN: FileCheck %s --check-prefix=NO-OFFSETS
## y) Test that if "Offsets" is specified, the offsets array will be emitted accordingly, even when
## the "OffsetEntryCount" is specified to be 0.
# RUN: yaml2obj --docnum=21 -DOFFSETENTRIES=0 -DOFFSETS=[0x01,0x02,0x03] %s -o %t23.o
# RUN: llvm-readelf --hex-dump=.debug_loclists %t23.o | \
# RUN: FileCheck %s --check-prefix=OFFSETS
# OFFSETS: Hex dump of section '.debug_loclists':
# OFFSETS-NEXT: 0x00000000 0e000000 05000800 00000000 01000000 ................
## ^------- unit_length (4-byte)
## ^--- version (2-byte)
## ^- address_size (1-byte)
## ^- segment_selector_size (1-byte)
## ^------- offset_entry_count (4-byte)
## ^------- offsets[0] (4-byte)
# OFFSETS-NEXT: 0x00000010 02000000 03000000 01010201 0200 ..............
## ^------- offsets[1] (4-byte)
## ^------- offsets[2] (4-byte)
## ^- DW_LLE_base_addressx
## ^- operands[0] (ULEB128) 0x01
## ^- DW_LLE_startx_endx
## ^- operands[0] (ULEB128) 0x01
## ^- operands[1] (ULEB128) 0x02
## ^- location descriptions length (ULEB128) 0x00