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//===- llvm/unittest/DebugInfo/DWARFDieTest.cpp ---------------------------===//
//
// 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 "llvm/BinaryFormat/Dwarf.h"
#include "llvm/DebugInfo/DWARF/DWARFContext.h"
#include "llvm/ObjectYAML/DWARFEmitter.h"
#include "llvm/Testing/Support/Error.h"
#include "gtest/gtest.h"
using namespace llvm;
using namespace llvm::dwarf;
using object::SectionedAddress;
namespace {
TEST(DWARFDie, getLocations) {
const char *yamldata = R"(
debug_abbrev:
- Table:
- Code: 0x00000001
Tag: DW_TAG_compile_unit
Children: DW_CHILDREN_no
Attributes:
- Attribute: DW_AT_location
Form: DW_FORM_sec_offset
- Attribute: DW_AT_data_member_location
Form: DW_FORM_exprloc
- Attribute: DW_AT_vtable_elem_location
Form: DW_FORM_sec_offset
- Attribute: DW_AT_call_data_location
Form: DW_FORM_sec_offset
debug_info:
- Version: 5
UnitType: DW_UT_compile
AddrSize: 4
Entries:
- AbbrCode: 0x00000001
Values:
- Value: 12
- Value: 0x0000000000000001
BlockData: [ 0x47 ]
- Value: 20
- Value: 25
debug_loclists:
- AddressSize: 4
OffsetEntryCount: 0
Lists:
- Entries:
- Operator: DW_LLE_start_length
Values: [ 0x01, 0x02 ]
- Operator: DW_LLE_end_of_list
- Entries:
- Operator: DW_LLE_startx_length
Values: [ 0x01, 0x02 ]
- Operator: DW_LLE_end_of_list
- Entries:
- Operator: DW_LLE_start_length
Values: [ 0x01, 0x02 ]
## end_of_list intentionally missing.
)";
Expected<StringMap<std::unique_ptr<MemoryBuffer>>> Sections =
DWARFYAML::emitDebugSections(StringRef(yamldata),
/*IsLittleEndian=*/true,
/*Is64BitAddrSize=*/false);
ASSERT_THAT_EXPECTED(Sections, Succeeded());
std::unique_ptr<DWARFContext> Ctx =
DWARFContext::create(*Sections, 4, /*isLittleEndian=*/true);
DWARFCompileUnit *CU = Ctx->getCompileUnitForOffset(0);
ASSERT_NE(nullptr, CU);
DWARFDie Die = CU->getUnitDIE();
ASSERT_TRUE(Die.isValid());
EXPECT_THAT_EXPECTED(Die.getLocations(DW_AT_location),
HasValue(testing::ElementsAre(DWARFLocationExpression{
DWARFAddressRange{1, 3}, {}})));
EXPECT_THAT_EXPECTED(
Die.getLocations(DW_AT_data_member_location),
HasValue(testing::ElementsAre(DWARFLocationExpression{None, {0x47}})));
EXPECT_THAT_EXPECTED(
Die.getLocations(DW_AT_vtable_elem_location),
Failed<ErrorInfoBase>(testing::Property(
&ErrorInfoBase::message,
"Unable to resolve indirect address 1 for: DW_LLE_startx_length")));
EXPECT_THAT_EXPECTED(
Die.getLocations(DW_AT_call_data_location),
FailedWithMessage(
"unexpected end of data at offset 0x20 while reading [0x20, 0x21)"));
EXPECT_THAT_EXPECTED(
Die.getLocations(DW_AT_call_data_value),
Failed<ErrorInfoBase>(testing::Property(&ErrorInfoBase::message,
"No DW_AT_call_data_value")));
}
} // end anonymous namespace
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