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