forked from OSchip/llvm-project
276 lines
9.3 KiB
C++
276 lines
9.3 KiB
C++
//===-- DWARFASTParserClangTests.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 "Plugins/SymbolFile/DWARF/DWARFASTParserClang.h"
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#include "Plugins/SymbolFile/DWARF/DWARFCompileUnit.h"
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#include "Plugins/SymbolFile/DWARF/DWARFDIE.h"
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#include "TestingSupport/Symbol/YAMLModuleTester.h"
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#include "gmock/gmock.h"
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#include "gtest/gtest.h"
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using namespace lldb;
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using namespace lldb_private;
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using namespace lldb_private::dwarf;
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namespace {
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class DWARFASTParserClangTests : public testing::Test {};
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class DWARFASTParserClangStub : public DWARFASTParserClang {
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public:
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using DWARFASTParserClang::DWARFASTParserClang;
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using DWARFASTParserClang::LinkDeclContextToDIE;
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std::vector<const clang::DeclContext *> GetDeclContextToDIEMapKeys() {
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std::vector<const clang::DeclContext *> keys;
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for (const auto &it : m_decl_ctx_to_die)
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keys.push_back(it.first);
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return keys;
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}
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};
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} // namespace
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// If your implementation needs to dereference the dummy pointers we are
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// defining here, causing this test to fail, feel free to delete it.
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TEST_F(DWARFASTParserClangTests,
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EnsureAllDIEsInDeclContextHaveBeenParsedParsesOnlyMatchingEntries) {
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/// Auxiliary debug info.
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const char *yamldata = R"(
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--- !ELF
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FileHeader:
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Class: ELFCLASS64
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Data: ELFDATA2LSB
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Type: ET_EXEC
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Machine: EM_386
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DWARF:
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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_yes
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Attributes:
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- Attribute: DW_AT_language
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Form: DW_FORM_data2
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- Code: 0x00000002
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Tag: DW_TAG_base_type
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Children: DW_CHILDREN_no
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Attributes:
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- Attribute: DW_AT_encoding
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Form: DW_FORM_data1
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- Attribute: DW_AT_byte_size
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Form: DW_FORM_data1
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debug_info:
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- Version: 4
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AddrSize: 8
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Entries:
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- AbbrCode: 0x00000001
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Values:
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- Value: 0x000000000000000C
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- AbbrCode: 0x00000002
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Values:
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- Value: 0x0000000000000007 # DW_ATE_unsigned
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- Value: 0x0000000000000004
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- AbbrCode: 0x00000002
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Values:
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- Value: 0x0000000000000007 # DW_ATE_unsigned
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- Value: 0x0000000000000008
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- AbbrCode: 0x00000002
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Values:
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- Value: 0x0000000000000005 # DW_ATE_signed
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- Value: 0x0000000000000008
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- AbbrCode: 0x00000002
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Values:
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- Value: 0x0000000000000008 # DW_ATE_unsigned_char
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- Value: 0x0000000000000001
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- AbbrCode: 0x00000000
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)";
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YAMLModuleTester t(yamldata);
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ASSERT_TRUE((bool)t.GetDwarfUnit());
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TypeSystemClang ast_ctx("dummy ASTContext", HostInfoBase::GetTargetTriple());
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DWARFASTParserClangStub ast_parser(ast_ctx);
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DWARFUnit *unit = t.GetDwarfUnit();
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const DWARFDebugInfoEntry *die_first = unit->DIE().GetDIE();
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const DWARFDebugInfoEntry *die_child0 = die_first->GetFirstChild();
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const DWARFDebugInfoEntry *die_child1 = die_child0->GetSibling();
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const DWARFDebugInfoEntry *die_child2 = die_child1->GetSibling();
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const DWARFDebugInfoEntry *die_child3 = die_child2->GetSibling();
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std::vector<DWARFDIE> dies = {
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DWARFDIE(unit, die_child0), DWARFDIE(unit, die_child1),
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DWARFDIE(unit, die_child2), DWARFDIE(unit, die_child3)};
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std::vector<clang::DeclContext *> decl_ctxs = {
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(clang::DeclContext *)1LL, (clang::DeclContext *)2LL,
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(clang::DeclContext *)2LL, (clang::DeclContext *)3LL};
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for (int i = 0; i < 4; ++i)
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ast_parser.LinkDeclContextToDIE(decl_ctxs[i], dies[i]);
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ast_parser.EnsureAllDIEsInDeclContextHaveBeenParsed(
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CompilerDeclContext(nullptr, decl_ctxs[1]));
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EXPECT_THAT(ast_parser.GetDeclContextToDIEMapKeys(),
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testing::UnorderedElementsAre(decl_ctxs[0], decl_ctxs[3]));
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}
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TEST_F(DWARFASTParserClangTests, TestCallingConventionParsing) {
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// Tests parsing DW_AT_calling_convention values.
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// The DWARF below just declares a list of function types with
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// DW_AT_calling_convention on them.
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const char *yamldata = R"(
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--- !ELF
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FileHeader:
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Class: ELFCLASS32
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Data: ELFDATA2LSB
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Type: ET_EXEC
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Machine: EM_386
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DWARF:
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debug_str:
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- func1
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- func2
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- func3
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- func4
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- func5
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- func6
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- func7
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- func8
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- func9
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debug_abbrev:
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- ID: 0
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Table:
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- Code: 0x1
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Tag: DW_TAG_compile_unit
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Children: DW_CHILDREN_yes
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Attributes:
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- Attribute: DW_AT_language
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Form: DW_FORM_data2
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- Code: 0x2
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Tag: DW_TAG_subprogram
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Children: DW_CHILDREN_no
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Attributes:
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- Attribute: DW_AT_low_pc
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Form: DW_FORM_addr
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- Attribute: DW_AT_high_pc
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Form: DW_FORM_data4
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- Attribute: DW_AT_name
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Form: DW_FORM_strp
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- Attribute: DW_AT_calling_convention
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Form: DW_FORM_data1
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- Attribute: DW_AT_external
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Form: DW_FORM_flag_present
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debug_info:
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- Version: 4
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AddrSize: 4
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Entries:
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- AbbrCode: 0x1
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Values:
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- Value: 0xC
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- AbbrCode: 0x2
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Values:
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- Value: 0x0
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- Value: 0x5
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- Value: 0x00
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- Value: 0xCB
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- Value: 0x1
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- AbbrCode: 0x2
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Values:
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- Value: 0x10
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- Value: 0x5
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- Value: 0x06
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- Value: 0xB3
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- Value: 0x1
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- AbbrCode: 0x2
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Values:
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- Value: 0x20
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- Value: 0x5
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- Value: 0x0C
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- Value: 0xB1
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- Value: 0x1
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- AbbrCode: 0x2
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Values:
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- Value: 0x30
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- Value: 0x5
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- Value: 0x12
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- Value: 0xC0
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- Value: 0x1
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- AbbrCode: 0x2
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Values:
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- Value: 0x40
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- Value: 0x5
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- Value: 0x18
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- Value: 0xB2
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- Value: 0x1
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- AbbrCode: 0x2
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Values:
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- Value: 0x50
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- Value: 0x5
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- Value: 0x1E
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- Value: 0xC1
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- Value: 0x1
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- AbbrCode: 0x2
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Values:
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- Value: 0x60
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- Value: 0x5
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- Value: 0x24
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- Value: 0xC2
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- Value: 0x1
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- AbbrCode: 0x2
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Values:
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- Value: 0x70
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- Value: 0x5
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- Value: 0x2a
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- Value: 0xEE
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- Value: 0x1
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- AbbrCode: 0x2
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Values:
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- Value: 0x80
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- Value: 0x5
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- Value: 0x30
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- Value: 0x01
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- Value: 0x1
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- AbbrCode: 0x0
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...
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)";
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YAMLModuleTester t(yamldata);
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DWARFUnit *unit = t.GetDwarfUnit();
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ASSERT_NE(unit, nullptr);
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const DWARFDebugInfoEntry *cu_entry = unit->DIE().GetDIE();
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ASSERT_EQ(cu_entry->Tag(), DW_TAG_compile_unit);
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DWARFDIE cu_die(unit, cu_entry);
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TypeSystemClang ast_ctx("dummy ASTContext", HostInfoBase::GetTargetTriple());
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DWARFASTParserClangStub ast_parser(ast_ctx);
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std::vector<std::string> found_function_types;
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// The DWARF above is just a list of functions. Parse all of them to
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// extract the function types and their calling convention values.
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for (DWARFDIE func : cu_die.children()) {
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ASSERT_EQ(func.Tag(), DW_TAG_subprogram);
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SymbolContext sc;
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bool new_type = false;
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lldb::TypeSP type = ast_parser.ParseTypeFromDWARF(sc, func, &new_type);
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found_function_types.push_back(
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type->GetForwardCompilerType().GetTypeName().AsCString());
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}
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// Compare the parsed function types against the expected list of types.
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const std::vector<std::string> expected_function_types = {
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"void () __attribute__((regcall))",
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"void () __attribute__((fastcall))",
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"void () __attribute__((stdcall))",
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"void () __attribute__((vectorcall))",
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"void () __attribute__((pascal))",
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"void () __attribute__((ms_abi))",
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"void () __attribute__((sysv_abi))",
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"void ()", // invalid calling convention.
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"void ()", // DW_CC_normal -> no attribute
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};
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ASSERT_EQ(found_function_types, expected_function_types);
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}
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