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[lldb] Add support for recognizing swift ast sections in object files

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In Apple's downstream fork, there is support for understanding the swift
AST sections in various binaries. Even though the lldb on llvm.org does
not have support for debugging swift, I think it makes sense to move
support for recognizing swift ast sections upstream.

Differential Revision: https://reviews.llvm.org/D159142
This commit is contained in:
Alex Langford 2023-08-29 14:11:41 -07:00
parent dfc0ede1f8
commit 764287f1ad
6 changed files with 11 additions and 0 deletions
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1
lldb/include/lldb/lldb-enumerations.h
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@ -739,6 +739,7 @@ enum SectionType {
eSectionTypeDWARFDebugLocListsDwo,
eSectionTypeDWARFDebugTuIndex,
eSectionTypeCTF,
eSectionTypeSwiftModules,
};
FLAGS_ENUM(EmulateInstructionOptions){

3
lldb/source/Core/Section.cpp
View File

@ -149,6 +149,8 @@ const char *Section::GetTypeAsCString() const {
return "ctf";
case eSectionTypeOther:
return "regular";
case eSectionTypeSwiftModules:
return "swift-modules";
}
return "unknown";
}
@ -455,6 +457,7 @@ bool Section::ContainsOnlyDebugInfo() const {
case eSectionTypeDWARFAppleObjC:
case eSectionTypeDWARFGNUDebugAltLink:
case eSectionTypeCTF:
case eSectionTypeSwiftModules:
return true;
}
return false;

1
lldb/source/Plugins/ObjectFile/ELF/ObjectFileELF.cpp
View File

@ -1679,6 +1679,7 @@ static SectionType GetSectionTypeFromName(llvm::StringRef Name) {
.Case(".gnu_debugaltlink", eSectionTypeDWARFGNUDebugAltLink)
.Case(".gosymtab", eSectionTypeGoSymtab)
.Case(".text", eSectionTypeCode)
.Case(".swift_ast", eSectionTypeSwiftModules)
.Default(eSectionTypeOther);
}

4
lldb/source/Plugins/ObjectFile/Mach-O/ObjectFileMachO.cpp
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@ -1202,6 +1202,7 @@ AddressClass ObjectFileMachO::GetAddressClass(lldb::addr_t file_addr) {
case eSectionTypeDWARFAppleObjC:
case eSectionTypeDWARFGNUDebugAltLink:
case eSectionTypeCTF:
case eSectionTypeSwiftModules:
return AddressClass::eDebug;
case eSectionTypeEHFrame:
@ -1476,6 +1477,7 @@ static lldb::SectionType GetSectionType(uint32_t flags,
static ConstString g_sect_name_data("__data");
static ConstString g_sect_name_go_symtab("__gosymtab");
static ConstString g_sect_name_ctf("__ctf");
static ConstString g_sect_name_swift_ast("__swift_ast");
if (section_name == g_sect_name_dwarf_debug_abbrev)
return eSectionTypeDWARFDebugAbbrev;
@ -1555,6 +1557,8 @@ static lldb::SectionType GetSectionType(uint32_t flags,
return eSectionTypeGoSymtab;
if (section_name == g_sect_name_ctf)
return eSectionTypeCTF;
if (section_name == g_sect_name_swift_ast)
return eSectionTypeSwiftModules;
if (section_name == g_sect_name_objc_data ||
section_name == g_sect_name_objc_classrefs ||
section_name == g_sect_name_objc_superrefs ||

1
lldb/source/Plugins/ObjectFile/PECOFF/ObjectFilePECOFF.cpp
View File

@ -1009,6 +1009,7 @@ SectionType ObjectFilePECOFF::GetSectionType(llvm::StringRef sect_name,
// .eh_frame can be truncated to 8 chars.
.Cases(".eh_frame", ".eh_fram", eSectionTypeEHFrame)
.Case(".gosymtab", eSectionTypeGoSymtab)
.Case("swiftast", eSectionTypeSwiftModules)
.Default(eSectionTypeInvalid);
if (section_type != eSectionTypeInvalid)
return section_type;

1
lldb/source/Symbol/ObjectFile.cpp
View File

@ -357,6 +357,7 @@ AddressClass ObjectFile::GetAddressClass(addr_t file_addr) {
case eSectionTypeDWARFAppleObjC:
case eSectionTypeDWARFGNUDebugAltLink:
case eSectionTypeCTF:
case eSectionTypeSwiftModules:
return AddressClass::eDebug;
case eSectionTypeEHFrame:
case eSectionTypeARMexidx: