| //===- DarwinAsmParser.cpp - Darwin (Mach-O) Assembly Parser --------------===// |
| // |
| // 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/ADT/SmallVector.h" |
| #include "llvm/ADT/StringRef.h" |
| #include "llvm/ADT/StringSwitch.h" |
| #include "llvm/ADT/Triple.h" |
| #include "llvm/ADT/Twine.h" |
| #include "llvm/BinaryFormat/MachO.h" |
| #include "llvm/MC/MCContext.h" |
| #include "llvm/MC/MCDirectives.h" |
| #include "llvm/MC/MCParser/MCAsmLexer.h" |
| #include "llvm/MC/MCParser/MCAsmParser.h" |
| #include "llvm/MC/MCParser/MCAsmParserExtension.h" |
| #include "llvm/MC/MCSectionMachO.h" |
| #include "llvm/MC/MCStreamer.h" |
| #include "llvm/MC/MCSymbol.h" |
| #include "llvm/MC/SectionKind.h" |
| #include "llvm/Support/Error.h" |
| #include "llvm/Support/FileSystem.h" |
| #include "llvm/Support/MemoryBuffer.h" |
| #include "llvm/Support/SMLoc.h" |
| #include "llvm/Support/SourceMgr.h" |
| #include "llvm/Support/raw_ostream.h" |
| #include <cstddef> |
| #include <cstdint> |
| #include <string> |
| #include <system_error> |
| #include <utility> |
| |
| using namespace llvm; |
| |
| namespace { |
| |
| /// Implementation of directive handling which is shared across all |
| /// Darwin targets. |
| class DarwinAsmParser : public MCAsmParserExtension { |
| template<bool (DarwinAsmParser::*HandlerMethod)(StringRef, SMLoc)> |
| void addDirectiveHandler(StringRef Directive) { |
| MCAsmParser::ExtensionDirectiveHandler Handler = std::make_pair( |
| this, HandleDirective<DarwinAsmParser, HandlerMethod>); |
| getParser().addDirectiveHandler(Directive, Handler); |
| } |
| |
| bool parseSectionSwitch(StringRef Segment, StringRef Section, |
| unsigned TAA = 0, unsigned ImplicitAlign = 0, |
| unsigned StubSize = 0); |
| |
| SMLoc LastVersionDirective; |
| |
| public: |
| DarwinAsmParser() = default; |
| |
| void Initialize(MCAsmParser &Parser) override { |
| // Call the base implementation. |
| this->MCAsmParserExtension::Initialize(Parser); |
| |
| addDirectiveHandler<&DarwinAsmParser::parseDirectiveAltEntry>(".alt_entry"); |
| addDirectiveHandler<&DarwinAsmParser::parseDirectiveDesc>(".desc"); |
| addDirectiveHandler<&DarwinAsmParser::parseDirectiveIndirectSymbol>( |
| ".indirect_symbol"); |
| addDirectiveHandler<&DarwinAsmParser::parseDirectiveLsym>(".lsym"); |
| addDirectiveHandler<&DarwinAsmParser::parseDirectiveSubsectionsViaSymbols>( |
| ".subsections_via_symbols"); |
| addDirectiveHandler<&DarwinAsmParser::parseDirectiveDumpOrLoad>(".dump"); |
| addDirectiveHandler<&DarwinAsmParser::parseDirectiveDumpOrLoad>(".load"); |
| addDirectiveHandler<&DarwinAsmParser::parseDirectiveSection>(".section"); |
| addDirectiveHandler<&DarwinAsmParser::parseDirectivePushSection>( |
| ".pushsection"); |
| addDirectiveHandler<&DarwinAsmParser::parseDirectivePopSection>( |
| ".popsection"); |
| addDirectiveHandler<&DarwinAsmParser::parseDirectivePrevious>(".previous"); |
| addDirectiveHandler<&DarwinAsmParser::parseDirectiveSecureLogUnique>( |
| ".secure_log_unique"); |
| addDirectiveHandler<&DarwinAsmParser::parseDirectiveSecureLogReset>( |
| ".secure_log_reset"); |
| addDirectiveHandler<&DarwinAsmParser::parseDirectiveTBSS>(".tbss"); |
| addDirectiveHandler<&DarwinAsmParser::parseDirectiveZerofill>(".zerofill"); |
| |
| addDirectiveHandler<&DarwinAsmParser::parseDirectiveDataRegion>( |
| ".data_region"); |
| addDirectiveHandler<&DarwinAsmParser::parseDirectiveDataRegionEnd>( |
| ".end_data_region"); |
| |
| // Special section directives. |
| addDirectiveHandler<&DarwinAsmParser::parseSectionDirectiveBss>(".bss"); |
| addDirectiveHandler<&DarwinAsmParser::parseSectionDirectiveConst>(".const"); |
| addDirectiveHandler<&DarwinAsmParser::parseSectionDirectiveConstData>( |
| ".const_data"); |
| addDirectiveHandler<&DarwinAsmParser::parseSectionDirectiveConstructor>( |
| ".constructor"); |
| addDirectiveHandler<&DarwinAsmParser::parseSectionDirectiveCString>( |
| ".cstring"); |
| addDirectiveHandler<&DarwinAsmParser::parseSectionDirectiveData>(".data"); |
| addDirectiveHandler<&DarwinAsmParser::parseSectionDirectiveDestructor>( |
| ".destructor"); |
| addDirectiveHandler<&DarwinAsmParser::parseSectionDirectiveDyld>(".dyld"); |
| addDirectiveHandler<&DarwinAsmParser::parseSectionDirectiveFVMLibInit0>( |
| ".fvmlib_init0"); |
| addDirectiveHandler<&DarwinAsmParser::parseSectionDirectiveFVMLibInit1>( |
| ".fvmlib_init1"); |
| addDirectiveHandler< |
| &DarwinAsmParser::parseSectionDirectiveLazySymbolPointers>( |
| ".lazy_symbol_pointer"); |
| addDirectiveHandler<&DarwinAsmParser::parseDirectiveLinkerOption>( |
| ".linker_option"); |
| addDirectiveHandler<&DarwinAsmParser::parseSectionDirectiveLiteral16>( |
| ".literal16"); |
| addDirectiveHandler<&DarwinAsmParser::parseSectionDirectiveLiteral4>( |
| ".literal4"); |
| addDirectiveHandler<&DarwinAsmParser::parseSectionDirectiveLiteral8>( |
| ".literal8"); |
| addDirectiveHandler<&DarwinAsmParser::parseSectionDirectiveModInitFunc>( |
| ".mod_init_func"); |
| addDirectiveHandler<&DarwinAsmParser::parseSectionDirectiveModTermFunc>( |
| ".mod_term_func"); |
| addDirectiveHandler< |
| &DarwinAsmParser::parseSectionDirectiveNonLazySymbolPointers>( |
| ".non_lazy_symbol_pointer"); |
| addDirectiveHandler< |
| &DarwinAsmParser::parseSectionDirectiveThreadLocalVariablePointers>( |
| ".thread_local_variable_pointer"); |
| addDirectiveHandler<&DarwinAsmParser::parseSectionDirectiveObjCCatClsMeth>( |
| ".objc_cat_cls_meth"); |
| addDirectiveHandler<&DarwinAsmParser::parseSectionDirectiveObjCCatInstMeth>( |
| ".objc_cat_inst_meth"); |
| addDirectiveHandler<&DarwinAsmParser::parseSectionDirectiveObjCCategory>( |
| ".objc_category"); |
| addDirectiveHandler<&DarwinAsmParser::parseSectionDirectiveObjCClass>( |
| ".objc_class"); |
| addDirectiveHandler<&DarwinAsmParser::parseSectionDirectiveObjCClassNames>( |
| ".objc_class_names"); |
| addDirectiveHandler<&DarwinAsmParser::parseSectionDirectiveObjCClassVars>( |
| ".objc_class_vars"); |
| addDirectiveHandler<&DarwinAsmParser::parseSectionDirectiveObjCClsMeth>( |
| ".objc_cls_meth"); |
| addDirectiveHandler<&DarwinAsmParser::parseSectionDirectiveObjCClsRefs>( |
| ".objc_cls_refs"); |
| addDirectiveHandler<&DarwinAsmParser::parseSectionDirectiveObjCInstMeth>( |
| ".objc_inst_meth"); |
| addDirectiveHandler< |
| &DarwinAsmParser::parseSectionDirectiveObjCInstanceVars>( |
| ".objc_instance_vars"); |
| addDirectiveHandler<&DarwinAsmParser::parseSectionDirectiveObjCMessageRefs>( |
| ".objc_message_refs"); |
| addDirectiveHandler<&DarwinAsmParser::parseSectionDirectiveObjCMetaClass>( |
| ".objc_meta_class"); |
| addDirectiveHandler< |
| &DarwinAsmParser::parseSectionDirectiveObjCMethVarNames>( |
| ".objc_meth_var_names"); |
| addDirectiveHandler< |
| &DarwinAsmParser::parseSectionDirectiveObjCMethVarTypes>( |
| ".objc_meth_var_types"); |
| addDirectiveHandler<&DarwinAsmParser::parseSectionDirectiveObjCModuleInfo>( |
| ".objc_module_info"); |
| addDirectiveHandler<&DarwinAsmParser::parseSectionDirectiveObjCProtocol>( |
| ".objc_protocol"); |
| addDirectiveHandler< |
| &DarwinAsmParser::parseSectionDirectiveObjCSelectorStrs>( |
| ".objc_selector_strs"); |
| addDirectiveHandler< |
| &DarwinAsmParser::parseSectionDirectiveObjCStringObject>( |
| ".objc_string_object"); |
| addDirectiveHandler<&DarwinAsmParser::parseSectionDirectiveObjCSymbols>( |
| ".objc_symbols"); |
| addDirectiveHandler<&DarwinAsmParser::parseSectionDirectivePICSymbolStub>( |
| ".picsymbol_stub"); |
| addDirectiveHandler<&DarwinAsmParser::parseSectionDirectiveStaticConst>( |
| ".static_const"); |
| addDirectiveHandler<&DarwinAsmParser::parseSectionDirectiveStaticData>( |
| ".static_data"); |
| addDirectiveHandler<&DarwinAsmParser::parseSectionDirectiveSymbolStub>( |
| ".symbol_stub"); |
| addDirectiveHandler<&DarwinAsmParser::parseSectionDirectiveTData>(".tdata"); |
| addDirectiveHandler<&DarwinAsmParser::parseSectionDirectiveText>(".text"); |
| addDirectiveHandler<&DarwinAsmParser::parseSectionDirectiveThreadInitFunc>( |
| ".thread_init_func"); |
| addDirectiveHandler<&DarwinAsmParser::parseSectionDirectiveTLV>(".tlv"); |
| |
| addDirectiveHandler<&DarwinAsmParser::parseSectionDirectiveIdent>(".ident"); |
| addDirectiveHandler<&DarwinAsmParser::parseWatchOSVersionMin>( |
| ".watchos_version_min"); |
| addDirectiveHandler<&DarwinAsmParser::parseTvOSVersionMin>( |
| ".tvos_version_min"); |
| addDirectiveHandler<&DarwinAsmParser::parseIOSVersionMin>( |
| ".ios_version_min"); |
| addDirectiveHandler<&DarwinAsmParser::parseMacOSXVersionMin>( |
| ".macosx_version_min"); |
| addDirectiveHandler<&DarwinAsmParser::parseBuildVersion>(".build_version"); |
| addDirectiveHandler<&DarwinAsmParser::parseDirectiveCGProfile>( |
| ".cg_profile"); |
| |
| LastVersionDirective = SMLoc(); |
| } |
| |
| bool parseDirectiveAltEntry(StringRef, SMLoc); |
| bool parseDirectiveDesc(StringRef, SMLoc); |
| bool parseDirectiveIndirectSymbol(StringRef, SMLoc); |
| bool parseDirectiveDumpOrLoad(StringRef, SMLoc); |
| bool parseDirectiveLsym(StringRef, SMLoc); |
| bool parseDirectiveLinkerOption(StringRef, SMLoc); |
| bool parseDirectiveSection(StringRef, SMLoc); |
| bool parseDirectivePushSection(StringRef, SMLoc); |
| bool parseDirectivePopSection(StringRef, SMLoc); |
| bool parseDirectivePrevious(StringRef, SMLoc); |
| bool parseDirectiveSecureLogReset(StringRef, SMLoc); |
| bool parseDirectiveSecureLogUnique(StringRef, SMLoc); |
| bool parseDirectiveSubsectionsViaSymbols(StringRef, SMLoc); |
| bool parseDirectiveTBSS(StringRef, SMLoc); |
| bool parseDirectiveZerofill(StringRef, SMLoc); |
| bool parseDirectiveDataRegion(StringRef, SMLoc); |
| bool parseDirectiveDataRegionEnd(StringRef, SMLoc); |
| |
| // Named Section Directive |
| bool parseSectionDirectiveBss(StringRef, SMLoc) { |
| return parseSectionSwitch("__DATA", "__bss"); |
| } |
| |
| bool parseSectionDirectiveConst(StringRef, SMLoc) { |
| return parseSectionSwitch("__TEXT", "__const"); |
| } |
| |
| bool parseSectionDirectiveStaticConst(StringRef, SMLoc) { |
| return parseSectionSwitch("__TEXT", "__static_const"); |
| } |
| |
| bool parseSectionDirectiveCString(StringRef, SMLoc) { |
| return parseSectionSwitch("__TEXT","__cstring", |
| MachO::S_CSTRING_LITERALS); |
| } |
| |
| bool parseSectionDirectiveLiteral4(StringRef, SMLoc) { |
| return parseSectionSwitch("__TEXT", "__literal4", |
| MachO::S_4BYTE_LITERALS, 4); |
| } |
| |
| bool parseSectionDirectiveLiteral8(StringRef, SMLoc) { |
| return parseSectionSwitch("__TEXT", "__literal8", |
| MachO::S_8BYTE_LITERALS, 8); |
| } |
| |
| bool parseSectionDirectiveLiteral16(StringRef, SMLoc) { |
| return parseSectionSwitch("__TEXT","__literal16", |
| MachO::S_16BYTE_LITERALS, 16); |
| } |
| |
| bool parseSectionDirectiveConstructor(StringRef, SMLoc) { |
| return parseSectionSwitch("__TEXT","__constructor"); |
| } |
| |
| bool parseSectionDirectiveDestructor(StringRef, SMLoc) { |
| return parseSectionSwitch("__TEXT","__destructor"); |
| } |
| |
| bool parseSectionDirectiveFVMLibInit0(StringRef, SMLoc) { |
| return parseSectionSwitch("__TEXT","__fvmlib_init0"); |
| } |
| |
| bool parseSectionDirectiveFVMLibInit1(StringRef, SMLoc) { |
| return parseSectionSwitch("__TEXT","__fvmlib_init1"); |
| } |
| |
| bool parseSectionDirectiveSymbolStub(StringRef, SMLoc) { |
| return parseSectionSwitch("__TEXT","__symbol_stub", |
| MachO::S_SYMBOL_STUBS | |
| MachO::S_ATTR_PURE_INSTRUCTIONS, |
| // FIXME: Different on PPC and ARM. |
| 0, 16); |
| } |
| |
| bool parseSectionDirectivePICSymbolStub(StringRef, SMLoc) { |
| return parseSectionSwitch("__TEXT","__picsymbol_stub", |
| MachO::S_SYMBOL_STUBS | |
| MachO::S_ATTR_PURE_INSTRUCTIONS, 0, 26); |
| } |
| |
| bool parseSectionDirectiveData(StringRef, SMLoc) { |
| return parseSectionSwitch("__DATA", "__data"); |
| } |
| |
| bool parseSectionDirectiveStaticData(StringRef, SMLoc) { |
| return parseSectionSwitch("__DATA", "__static_data"); |
| } |
| |
| bool parseSectionDirectiveNonLazySymbolPointers(StringRef, SMLoc) { |
| return parseSectionSwitch("__DATA", "__nl_symbol_ptr", |
| MachO::S_NON_LAZY_SYMBOL_POINTERS, 4); |
| } |
| |
| bool parseSectionDirectiveLazySymbolPointers(StringRef, SMLoc) { |
| return parseSectionSwitch("__DATA", "__la_symbol_ptr", |
| MachO::S_LAZY_SYMBOL_POINTERS, 4); |
| } |
| |
| bool parseSectionDirectiveThreadLocalVariablePointers(StringRef, SMLoc) { |
| return parseSectionSwitch("__DATA", "__thread_ptr", |
| MachO::S_THREAD_LOCAL_VARIABLE_POINTERS, 4); |
| } |
| |
| bool parseSectionDirectiveDyld(StringRef, SMLoc) { |
| return parseSectionSwitch("__DATA", "__dyld"); |
| } |
| |
| bool parseSectionDirectiveModInitFunc(StringRef, SMLoc) { |
| return parseSectionSwitch("__DATA", "__mod_init_func", |
| MachO::S_MOD_INIT_FUNC_POINTERS, 4); |
| } |
| |
| bool parseSectionDirectiveModTermFunc(StringRef, SMLoc) { |
| return parseSectionSwitch("__DATA", "__mod_term_func", |
| MachO::S_MOD_TERM_FUNC_POINTERS, 4); |
| } |
| |
| bool parseSectionDirectiveConstData(StringRef, SMLoc) { |
| return parseSectionSwitch("__DATA", "__const"); |
| } |
| |
| bool parseSectionDirectiveObjCClass(StringRef, SMLoc) { |
| return parseSectionSwitch("__OBJC", "__class", |
| MachO::S_ATTR_NO_DEAD_STRIP); |
| } |
| |
| bool parseSectionDirectiveObjCMetaClass(StringRef, SMLoc) { |
| return parseSectionSwitch("__OBJC", "__meta_class", |
| MachO::S_ATTR_NO_DEAD_STRIP); |
| } |
| |
| bool parseSectionDirectiveObjCCatClsMeth(StringRef, SMLoc) { |
| return parseSectionSwitch("__OBJC", "__cat_cls_meth", |
| MachO::S_ATTR_NO_DEAD_STRIP); |
| } |
| |
| bool parseSectionDirectiveObjCCatInstMeth(StringRef, SMLoc) { |
| return parseSectionSwitch("__OBJC", "__cat_inst_meth", |
| MachO::S_ATTR_NO_DEAD_STRIP); |
| } |
| |
| bool parseSectionDirectiveObjCProtocol(StringRef, SMLoc) { |
| return parseSectionSwitch("__OBJC", "__protocol", |
| MachO::S_ATTR_NO_DEAD_STRIP); |
| } |
| |
| bool parseSectionDirectiveObjCStringObject(StringRef, SMLoc) { |
| return parseSectionSwitch("__OBJC", "__string_object", |
| MachO::S_ATTR_NO_DEAD_STRIP); |
| } |
| |
| bool parseSectionDirectiveObjCClsMeth(StringRef, SMLoc) { |
| return parseSectionSwitch("__OBJC", "__cls_meth", |
| MachO::S_ATTR_NO_DEAD_STRIP); |
| } |
| |
| bool parseSectionDirectiveObjCInstMeth(StringRef, SMLoc) { |
| return parseSectionSwitch("__OBJC", "__inst_meth", |
| MachO::S_ATTR_NO_DEAD_STRIP); |
| } |
| |
| bool parseSectionDirectiveObjCClsRefs(StringRef, SMLoc) { |
| return parseSectionSwitch("__OBJC", "__cls_refs", |
| MachO::S_ATTR_NO_DEAD_STRIP | |
| MachO::S_LITERAL_POINTERS, 4); |
| } |
| |
| bool parseSectionDirectiveObjCMessageRefs(StringRef, SMLoc) { |
| return parseSectionSwitch("__OBJC", "__message_refs", |
| MachO::S_ATTR_NO_DEAD_STRIP | |
| MachO::S_LITERAL_POINTERS, 4); |
| } |
| |
| bool parseSectionDirectiveObjCSymbols(StringRef, SMLoc) { |
| return parseSectionSwitch("__OBJC", "__symbols", |
| MachO::S_ATTR_NO_DEAD_STRIP); |
| } |
| |
| bool parseSectionDirectiveObjCCategory(StringRef, SMLoc) { |
| return parseSectionSwitch("__OBJC", "__category", |
| MachO::S_ATTR_NO_DEAD_STRIP); |
| } |
| |
| bool parseSectionDirectiveObjCClassVars(StringRef, SMLoc) { |
| return parseSectionSwitch("__OBJC", "__class_vars", |
| MachO::S_ATTR_NO_DEAD_STRIP); |
| } |
| |
| bool parseSectionDirectiveObjCInstanceVars(StringRef, SMLoc) { |
| return parseSectionSwitch("__OBJC", "__instance_vars", |
| MachO::S_ATTR_NO_DEAD_STRIP); |
| } |
| |
| bool parseSectionDirectiveObjCModuleInfo(StringRef, SMLoc) { |
| return parseSectionSwitch("__OBJC", "__module_info", |
| MachO::S_ATTR_NO_DEAD_STRIP); |
| } |
| |
| bool parseSectionDirectiveObjCClassNames(StringRef, SMLoc) { |
| return parseSectionSwitch("__TEXT", "__cstring", |
| MachO::S_CSTRING_LITERALS); |
| } |
| |
| bool parseSectionDirectiveObjCMethVarTypes(StringRef, SMLoc) { |
| return parseSectionSwitch("__TEXT", "__cstring", |
| MachO::S_CSTRING_LITERALS); |
| } |
| |
| bool parseSectionDirectiveObjCMethVarNames(StringRef, SMLoc) { |
| return parseSectionSwitch("__TEXT", "__cstring", |
| MachO::S_CSTRING_LITERALS); |
| } |
| |
| bool parseSectionDirectiveObjCSelectorStrs(StringRef, SMLoc) { |
| return parseSectionSwitch("__OBJC", "__selector_strs", |
| MachO::S_CSTRING_LITERALS); |
| } |
| |
| bool parseSectionDirectiveTData(StringRef, SMLoc) { |
| return parseSectionSwitch("__DATA", "__thread_data", |
| MachO::S_THREAD_LOCAL_REGULAR); |
| } |
| |
| bool parseSectionDirectiveText(StringRef, SMLoc) { |
| return parseSectionSwitch("__TEXT", "__text", |
| MachO::S_ATTR_PURE_INSTRUCTIONS); |
| } |
| |
| bool parseSectionDirectiveTLV(StringRef, SMLoc) { |
| return parseSectionSwitch("__DATA", "__thread_vars", |
| MachO::S_THREAD_LOCAL_VARIABLES); |
| } |
| |
| bool parseSectionDirectiveIdent(StringRef, SMLoc) { |
| // Darwin silently ignores the .ident directive. |
| getParser().eatToEndOfStatement(); |
| return false; |
| } |
| |
| bool parseSectionDirectiveThreadInitFunc(StringRef, SMLoc) { |
| return parseSectionSwitch("__DATA", "__thread_init", |
| MachO::S_THREAD_LOCAL_INIT_FUNCTION_POINTERS); |
| } |
| |
| bool parseWatchOSVersionMin(StringRef Directive, SMLoc Loc) { |
| return parseVersionMin(Directive, Loc, MCVM_WatchOSVersionMin); |
| } |
| bool parseTvOSVersionMin(StringRef Directive, SMLoc Loc) { |
| return parseVersionMin(Directive, Loc, MCVM_TvOSVersionMin); |
| } |
| bool parseIOSVersionMin(StringRef Directive, SMLoc Loc) { |
| return parseVersionMin(Directive, Loc, MCVM_IOSVersionMin); |
| } |
| bool parseMacOSXVersionMin(StringRef Directive, SMLoc Loc) { |
| return parseVersionMin(Directive, Loc, MCVM_OSXVersionMin); |
| } |
| |
| bool parseBuildVersion(StringRef Directive, SMLoc Loc); |
| bool parseVersionMin(StringRef Directive, SMLoc Loc, MCVersionMinType Type); |
| bool parseMajorMinorVersionComponent(unsigned *Major, unsigned *Minor, |
| const char *VersionName); |
| bool parseOptionalTrailingVersionComponent(unsigned *Component, |
| const char *ComponentName); |
| bool parseVersion(unsigned *Major, unsigned *Minor, unsigned *Update); |
| bool parseSDKVersion(VersionTuple &SDKVersion); |
| void checkVersion(StringRef Directive, StringRef Arg, SMLoc Loc, |
| Triple::OSType ExpectedOS); |
| bool parseDirectiveCGProfile(StringRef Directive, SMLoc Loc); |
| }; |
| |
| } // end anonymous namespace |
| |
| bool DarwinAsmParser::parseSectionSwitch(StringRef Segment, StringRef Section, |
| unsigned TAA, unsigned Alignment, |
| unsigned StubSize) { |
| if (getLexer().isNot(AsmToken::EndOfStatement)) |
| return TokError("unexpected token in section switching directive"); |
| Lex(); |
| |
| // FIXME: Arch specific. |
| bool isText = TAA & MachO::S_ATTR_PURE_INSTRUCTIONS; |
| getStreamer().switchSection(getContext().getMachOSection( |
| Segment, Section, TAA, StubSize, |
| isText ? SectionKind::getText() : SectionKind::getData())); |
| |
| // Set the implicit alignment, if any. |
| // |
| // FIXME: This isn't really what 'as' does; I think it just uses the implicit |
| // alignment on the section (e.g., if one manually inserts bytes into the |
| // section, then just issuing the section switch directive will not realign |
| // the section. However, this is arguably more reasonable behavior, and there |
| // is no good reason for someone to intentionally emit incorrectly sized |
| // values into the implicitly aligned sections. |
| if (Alignment) |
| getStreamer().emitValueToAlignment(Align(Alignment)); |
| |
| return false; |
| } |
| |
| /// parseDirectiveAltEntry |
| /// ::= .alt_entry identifier |
| bool DarwinAsmParser::parseDirectiveAltEntry(StringRef, SMLoc) { |
| StringRef Name; |
| if (getParser().parseIdentifier(Name)) |
| return TokError("expected identifier in directive"); |
| |
| // Look up symbol. |
| MCSymbol *Sym = getContext().getOrCreateSymbol(Name); |
| |
| if (Sym->isDefined()) |
| return TokError(".alt_entry must preceed symbol definition"); |
| |
| if (!getStreamer().emitSymbolAttribute(Sym, MCSA_AltEntry)) |
| return TokError("unable to emit symbol attribute"); |
| |
| Lex(); |
| return false; |
| } |
| |
| /// parseDirectiveDesc |
| /// ::= .desc identifier , expression |
| bool DarwinAsmParser::parseDirectiveDesc(StringRef, SMLoc) { |
| StringRef Name; |
| if (getParser().parseIdentifier(Name)) |
| return TokError("expected identifier in directive"); |
| |
| // Handle the identifier as the key symbol. |
| MCSymbol *Sym = getContext().getOrCreateSymbol(Name); |
| |
| if (getLexer().isNot(AsmToken::Comma)) |
| return TokError("unexpected token in '.desc' directive"); |
| Lex(); |
| |
| int64_t DescValue; |
| if (getParser().parseAbsoluteExpression(DescValue)) |
| return true; |
| |
| if (getLexer().isNot(AsmToken::EndOfStatement)) |
| return TokError("unexpected token in '.desc' directive"); |
| |
| Lex(); |
| |
| // Set the n_desc field of this Symbol to this DescValue |
| getStreamer().emitSymbolDesc(Sym, DescValue); |
| |
| return false; |
| } |
| |
| /// parseDirectiveIndirectSymbol |
| /// ::= .indirect_symbol identifier |
| bool DarwinAsmParser::parseDirectiveIndirectSymbol(StringRef, SMLoc Loc) { |
| const MCSectionMachO *Current = static_cast<const MCSectionMachO *>( |
| getStreamer().getCurrentSectionOnly()); |
| MachO::SectionType SectionType = Current->getType(); |
| if (SectionType != MachO::S_NON_LAZY_SYMBOL_POINTERS && |
| SectionType != MachO::S_LAZY_SYMBOL_POINTERS && |
| SectionType != MachO::S_THREAD_LOCAL_VARIABLE_POINTERS && |
| SectionType != MachO::S_SYMBOL_STUBS) |
| return Error(Loc, "indirect symbol not in a symbol pointer or stub " |
| "section"); |
| |
| StringRef Name; |
| if (getParser().parseIdentifier(Name)) |
| return TokError("expected identifier in .indirect_symbol directive"); |
| |
| MCSymbol *Sym = getContext().getOrCreateSymbol(Name); |
| |
| // Assembler local symbols don't make any sense here. Complain loudly. |
| if (Sym->isTemporary()) |
| return TokError("non-local symbol required in directive"); |
| |
| if (!getStreamer().emitSymbolAttribute(Sym, MCSA_IndirectSymbol)) |
| return TokError("unable to emit indirect symbol attribute for: " + Name); |
| |
| if (getLexer().isNot(AsmToken::EndOfStatement)) |
| return TokError("unexpected token in '.indirect_symbol' directive"); |
| |
| Lex(); |
| |
| return false; |
| } |
| |
| /// parseDirectiveDumpOrLoad |
| /// ::= ( .dump | .load ) "filename" |
| bool DarwinAsmParser::parseDirectiveDumpOrLoad(StringRef Directive, |
| SMLoc IDLoc) { |
| bool IsDump = Directive == ".dump"; |
| if (getLexer().isNot(AsmToken::String)) |
| return TokError("expected string in '.dump' or '.load' directive"); |
| |
| Lex(); |
| |
| if (getLexer().isNot(AsmToken::EndOfStatement)) |
| return TokError("unexpected token in '.dump' or '.load' directive"); |
| |
| Lex(); |
| |
| // FIXME: If/when .dump and .load are implemented they will be done in the |
| // the assembly parser and not have any need for an MCStreamer API. |
| if (IsDump) |
| return Warning(IDLoc, "ignoring directive .dump for now"); |
| else |
| return Warning(IDLoc, "ignoring directive .load for now"); |
| } |
| |
| /// ParseDirectiveLinkerOption |
| /// ::= .linker_option "string" ( , "string" )* |
| bool DarwinAsmParser::parseDirectiveLinkerOption(StringRef IDVal, SMLoc) { |
| SmallVector<std::string, 4> Args; |
| while (true) { |
| if (getLexer().isNot(AsmToken::String)) |
| return TokError("expected string in '" + Twine(IDVal) + "' directive"); |
| |
| std::string Data; |
| if (getParser().parseEscapedString(Data)) |
| return true; |
| |
| Args.push_back(Data); |
| |
| if (getLexer().is(AsmToken::EndOfStatement)) |
| break; |
| |
| if (getLexer().isNot(AsmToken::Comma)) |
| return TokError("unexpected token in '" + Twine(IDVal) + "' directive"); |
| Lex(); |
| } |
| |
| getStreamer().emitLinkerOptions(Args); |
| return false; |
| } |
| |
| /// parseDirectiveLsym |
| /// ::= .lsym identifier , expression |
| bool DarwinAsmParser::parseDirectiveLsym(StringRef, SMLoc) { |
| StringRef Name; |
| if (getParser().parseIdentifier(Name)) |
| return TokError("expected identifier in directive"); |
| |
| // Handle the identifier as the key symbol. |
| MCSymbol *Sym = getContext().getOrCreateSymbol(Name); |
| |
| if (getLexer().isNot(AsmToken::Comma)) |
| return TokError("unexpected token in '.lsym' directive"); |
| Lex(); |
| |
| const MCExpr *Value; |
| if (getParser().parseExpression(Value)) |
| return true; |
| |
| if (getLexer().isNot(AsmToken::EndOfStatement)) |
| return TokError("unexpected token in '.lsym' directive"); |
| |
| Lex(); |
| |
| // We don't currently support this directive. |
| // |
| // FIXME: Diagnostic location! |
| (void) Sym; |
| return TokError("directive '.lsym' is unsupported"); |
| } |
| |
| /// parseDirectiveSection: |
| /// ::= .section identifier (',' identifier)* |
| bool DarwinAsmParser::parseDirectiveSection(StringRef, SMLoc) { |
| SMLoc Loc = getLexer().getLoc(); |
| |
| StringRef SectionName; |
| if (getParser().parseIdentifier(SectionName)) |
| return Error(Loc, "expected identifier after '.section' directive"); |
| |
| // Verify there is a following comma. |
| if (!getLexer().is(AsmToken::Comma)) |
| return TokError("unexpected token in '.section' directive"); |
| |
| std::string SectionSpec = std::string(SectionName); |
| SectionSpec += ","; |
| |
| // Add all the tokens until the end of the line, ParseSectionSpecifier will |
| // handle this. |
| StringRef EOL = getLexer().LexUntilEndOfStatement(); |
| SectionSpec.append(EOL.begin(), EOL.end()); |
| |
| Lex(); |
| if (getLexer().isNot(AsmToken::EndOfStatement)) |
| return TokError("unexpected token in '.section' directive"); |
| Lex(); |
| |
| StringRef Segment, Section; |
| unsigned StubSize; |
| unsigned TAA; |
| bool TAAParsed; |
| if (class Error E = MCSectionMachO::ParseSectionSpecifier( |
| SectionSpec, Segment, Section, TAA, TAAParsed, StubSize)) |
| return Error(Loc, toString(std::move(E))); |
| |
| // Issue a warning if the target is not powerpc and Section is a *coal* section. |
| Triple TT = getParser().getContext().getTargetTriple(); |
| Triple::ArchType ArchTy = TT.getArch(); |
| |
| if (ArchTy != Triple::ppc && ArchTy != Triple::ppc64) { |
| StringRef NonCoalSection = StringSwitch<StringRef>(Section) |
| .Case("__textcoal_nt", "__text") |
| .Case("__const_coal", "__const") |
| .Case("__datacoal_nt", "__data") |
| .Default(Section); |
| |
| if (!Section.equals(NonCoalSection)) { |
| StringRef SectionVal(Loc.getPointer()); |
| size_t B = SectionVal.find(',') + 1, E = SectionVal.find(',', B); |
| SMLoc BLoc = SMLoc::getFromPointer(SectionVal.data() + B); |
| SMLoc ELoc = SMLoc::getFromPointer(SectionVal.data() + E); |
| getParser().Warning(Loc, "section \"" + Section + "\" is deprecated", |
| SMRange(BLoc, ELoc)); |
| getParser().Note(Loc, "change section name to \"" + NonCoalSection + |
| "\"", SMRange(BLoc, ELoc)); |
| } |
| } |
| |
| // FIXME: Arch specific. |
| bool isText = Segment == "__TEXT"; // FIXME: Hack. |
| getStreamer().switchSection(getContext().getMachOSection( |
| Segment, Section, TAA, StubSize, |
| isText ? SectionKind::getText() : SectionKind::getData())); |
| return false; |
| } |
| |
| /// ParseDirectivePushSection: |
| /// ::= .pushsection identifier (',' identifier)* |
| bool DarwinAsmParser::parseDirectivePushSection(StringRef S, SMLoc Loc) { |
| getStreamer().pushSection(); |
| |
| if (parseDirectiveSection(S, Loc)) { |
| getStreamer().popSection(); |
| return true; |
| } |
| |
| return false; |
| } |
| |
| /// ParseDirectivePopSection: |
| /// ::= .popsection |
| bool DarwinAsmParser::parseDirectivePopSection(StringRef, SMLoc) { |
| if (!getStreamer().popSection()) |
| return TokError(".popsection without corresponding .pushsection"); |
| return false; |
| } |
| |
| /// ParseDirectivePrevious: |
| /// ::= .previous |
| bool DarwinAsmParser::parseDirectivePrevious(StringRef DirName, SMLoc) { |
| MCSectionSubPair PreviousSection = getStreamer().getPreviousSection(); |
| if (!PreviousSection.first) |
| return TokError(".previous without corresponding .section"); |
| getStreamer().switchSection(PreviousSection.first, PreviousSection.second); |
| return false; |
| } |
| |
| /// ParseDirectiveSecureLogUnique |
| /// ::= .secure_log_unique ... message ... |
| bool DarwinAsmParser::parseDirectiveSecureLogUnique(StringRef, SMLoc IDLoc) { |
| StringRef LogMessage = getParser().parseStringToEndOfStatement(); |
| if (getLexer().isNot(AsmToken::EndOfStatement)) |
| return TokError("unexpected token in '.secure_log_unique' directive"); |
| |
| if (getContext().getSecureLogUsed()) |
| return Error(IDLoc, ".secure_log_unique specified multiple times"); |
| |
| // Get the secure log path. |
| StringRef SecureLogFile = getContext().getSecureLogFile(); |
| if (SecureLogFile.empty()) |
| return Error(IDLoc, ".secure_log_unique used but AS_SECURE_LOG_FILE " |
| "environment variable unset."); |
| |
| // Open the secure log file if we haven't already. |
| raw_fd_ostream *OS = getContext().getSecureLog(); |
| if (!OS) { |
| std::error_code EC; |
| auto NewOS = std::make_unique<raw_fd_ostream>( |
| SecureLogFile, EC, sys::fs::OF_Append | sys::fs::OF_TextWithCRLF); |
| if (EC) |
| return Error(IDLoc, Twine("can't open secure log file: ") + |
| SecureLogFile + " (" + EC.message() + ")"); |
| OS = NewOS.get(); |
| getContext().setSecureLog(std::move(NewOS)); |
| } |
| |
| // Write the message. |
| unsigned CurBuf = getSourceManager().FindBufferContainingLoc(IDLoc); |
| *OS << getSourceManager().getBufferInfo(CurBuf).Buffer->getBufferIdentifier() |
| << ":" << getSourceManager().FindLineNumber(IDLoc, CurBuf) << ":" |
| << LogMessage + "\n"; |
| |
| getContext().setSecureLogUsed(true); |
| |
| return false; |
| } |
| |
| /// ParseDirectiveSecureLogReset |
| /// ::= .secure_log_reset |
| bool DarwinAsmParser::parseDirectiveSecureLogReset(StringRef, SMLoc IDLoc) { |
| if (getLexer().isNot(AsmToken::EndOfStatement)) |
| return TokError("unexpected token in '.secure_log_reset' directive"); |
| |
| Lex(); |
| |
| getContext().setSecureLogUsed(false); |
| |
| return false; |
| } |
| |
| /// parseDirectiveSubsectionsViaSymbols |
| /// ::= .subsections_via_symbols |
| bool DarwinAsmParser::parseDirectiveSubsectionsViaSymbols(StringRef, SMLoc) { |
| if (getLexer().isNot(AsmToken::EndOfStatement)) |
| return TokError("unexpected token in '.subsections_via_symbols' directive"); |
| |
| Lex(); |
| |
| getStreamer().emitAssemblerFlag(MCAF_SubsectionsViaSymbols); |
| |
| return false; |
| } |
| |
| /// ParseDirectiveTBSS |
| /// ::= .tbss identifier, size, align |
| bool DarwinAsmParser::parseDirectiveTBSS(StringRef, SMLoc) { |
| SMLoc IDLoc = getLexer().getLoc(); |
| StringRef Name; |
| if (getParser().parseIdentifier(Name)) |
| return TokError("expected identifier in directive"); |
| |
| // Handle the identifier as the key symbol. |
| MCSymbol *Sym = getContext().getOrCreateSymbol(Name); |
| |
| if (getLexer().isNot(AsmToken::Comma)) |
| return TokError("unexpected token in directive"); |
| Lex(); |
| |
| int64_t Size; |
| SMLoc SizeLoc = getLexer().getLoc(); |
| if (getParser().parseAbsoluteExpression(Size)) |
| return true; |
| |
| int64_t Pow2Alignment = 0; |
| SMLoc Pow2AlignmentLoc; |
| if (getLexer().is(AsmToken::Comma)) { |
| Lex(); |
| Pow2AlignmentLoc = getLexer().getLoc(); |
| if (getParser().parseAbsoluteExpression(Pow2Alignment)) |
| return true; |
| } |
| |
| if (getLexer().isNot(AsmToken::EndOfStatement)) |
| return TokError("unexpected token in '.tbss' directive"); |
| |
| Lex(); |
| |
| if (Size < 0) |
| return Error(SizeLoc, "invalid '.tbss' directive size, can't be less than" |
| "zero"); |
| |
| // FIXME: Diagnose overflow. |
| if (Pow2Alignment < 0) |
| return Error(Pow2AlignmentLoc, "invalid '.tbss' alignment, can't be less" |
| "than zero"); |
| |
| if (!Sym->isUndefined()) |
| return Error(IDLoc, "invalid symbol redefinition"); |
| |
| getStreamer().emitTBSSSymbol( |
| getContext().getMachOSection("__DATA", "__thread_bss", |
| MachO::S_THREAD_LOCAL_ZEROFILL, 0, |
| SectionKind::getThreadBSS()), |
| Sym, Size, Align(1ULL << Pow2Alignment)); |
| |
| return false; |
| } |
| |
| /// ParseDirectiveZerofill |
| /// ::= .zerofill segname , sectname [, identifier , size_expression [ |
| /// , align_expression ]] |
| bool DarwinAsmParser::parseDirectiveZerofill(StringRef, SMLoc) { |
| StringRef Segment; |
| if (getParser().parseIdentifier(Segment)) |
| return TokError("expected segment name after '.zerofill' directive"); |
| |
| if (getLexer().isNot(AsmToken::Comma)) |
| return TokError("unexpected token in directive"); |
| Lex(); |
| |
| StringRef Section; |
| SMLoc SectionLoc = getLexer().getLoc(); |
| if (getParser().parseIdentifier(Section)) |
| return TokError("expected section name after comma in '.zerofill' " |
| "directive"); |
| |
| // If this is the end of the line all that was wanted was to create the |
| // the section but with no symbol. |
| if (getLexer().is(AsmToken::EndOfStatement)) { |
| // Create the zerofill section but no symbol |
| getStreamer().emitZerofill( |
| getContext().getMachOSection(Segment, Section, MachO::S_ZEROFILL, 0, |
| SectionKind::getBSS()), |
| /*Symbol=*/nullptr, /*Size=*/0, Align(1), SectionLoc); |
| return false; |
| } |
| |
| if (getLexer().isNot(AsmToken::Comma)) |
| return TokError("unexpected token in directive"); |
| Lex(); |
| |
| SMLoc IDLoc = getLexer().getLoc(); |
| StringRef IDStr; |
| if (getParser().parseIdentifier(IDStr)) |
| return TokError("expected identifier in directive"); |
| |
| // handle the identifier as the key symbol. |
| MCSymbol *Sym = getContext().getOrCreateSymbol(IDStr); |
| |
| if (getLexer().isNot(AsmToken::Comma)) |
| return TokError("unexpected token in directive"); |
| Lex(); |
| |
| int64_t Size; |
| SMLoc SizeLoc = getLexer().getLoc(); |
| if (getParser().parseAbsoluteExpression(Size)) |
| return true; |
| |
| int64_t Pow2Alignment = 0; |
| SMLoc Pow2AlignmentLoc; |
| if (getLexer().is(AsmToken::Comma)) { |
| Lex(); |
| Pow2AlignmentLoc = getLexer().getLoc(); |
| if (getParser().parseAbsoluteExpression(Pow2Alignment)) |
| return true; |
| } |
| |
| if (getLexer().isNot(AsmToken::EndOfStatement)) |
| return TokError("unexpected token in '.zerofill' directive"); |
| |
| Lex(); |
| |
| if (Size < 0) |
| return Error(SizeLoc, "invalid '.zerofill' directive size, can't be less " |
| "than zero"); |
| |
| // NOTE: The alignment in the directive is a power of 2 value, the assembler |
| // may internally end up wanting an alignment in bytes. |
| // FIXME: Diagnose overflow. |
| if (Pow2Alignment < 0) |
| return Error(Pow2AlignmentLoc, "invalid '.zerofill' directive alignment, " |
| "can't be less than zero"); |
| |
| if (!Sym->isUndefined()) |
| return Error(IDLoc, "invalid symbol redefinition"); |
| |
| // Create the zerofill Symbol with Size and Pow2Alignment |
| // |
| // FIXME: Arch specific. |
| getStreamer().emitZerofill( |
| getContext().getMachOSection(Segment, Section, MachO::S_ZEROFILL, 0, |
| SectionKind::getBSS()), |
| Sym, Size, Align(1ULL << Pow2Alignment), SectionLoc); |
| |
| return false; |
| } |
| |
| /// ParseDirectiveDataRegion |
| /// ::= .data_region [ ( jt8 | jt16 | jt32 ) ] |
| bool DarwinAsmParser::parseDirectiveDataRegion(StringRef, SMLoc) { |
| if (getLexer().is(AsmToken::EndOfStatement)) { |
| Lex(); |
| getStreamer().emitDataRegion(MCDR_DataRegion); |
| return false; |
| } |
| StringRef RegionType; |
| SMLoc Loc = getParser().getTok().getLoc(); |
| if (getParser().parseIdentifier(RegionType)) |
| return TokError("expected region type after '.data_region' directive"); |
| int Kind = StringSwitch<int>(RegionType) |
| .Case("jt8", MCDR_DataRegionJT8) |
| .Case("jt16", MCDR_DataRegionJT16) |
| .Case("jt32", MCDR_DataRegionJT32) |
| .Default(-1); |
| if (Kind == -1) |
| return Error(Loc, "unknown region type in '.data_region' directive"); |
| Lex(); |
| |
| getStreamer().emitDataRegion((MCDataRegionType)Kind); |
| return false; |
| } |
| |
| /// ParseDirectiveDataRegionEnd |
| /// ::= .end_data_region |
| bool DarwinAsmParser::parseDirectiveDataRegionEnd(StringRef, SMLoc) { |
| if (getLexer().isNot(AsmToken::EndOfStatement)) |
| return TokError("unexpected token in '.end_data_region' directive"); |
| |
| Lex(); |
| getStreamer().emitDataRegion(MCDR_DataRegionEnd); |
| return false; |
| } |
| |
| static bool isSDKVersionToken(const AsmToken &Tok) { |
| return Tok.is(AsmToken::Identifier) && Tok.getIdentifier() == "sdk_version"; |
| } |
| |
| /// parseMajorMinorVersionComponent ::= major, minor |
| bool DarwinAsmParser::parseMajorMinorVersionComponent(unsigned *Major, |
| unsigned *Minor, |
| const char *VersionName) { |
| // Get the major version number. |
| if (getLexer().isNot(AsmToken::Integer)) |
| return TokError(Twine("invalid ") + VersionName + |
| " major version number, integer expected"); |
| int64_t MajorVal = getLexer().getTok().getIntVal(); |
| if (MajorVal > 65535 || MajorVal <= 0) |
| return TokError(Twine("invalid ") + VersionName + " major version number"); |
| *Major = (unsigned)MajorVal; |
| Lex(); |
| if (getLexer().isNot(AsmToken::Comma)) |
| return TokError(Twine(VersionName) + |
| " minor version number required, comma expected"); |
| Lex(); |
| // Get the minor version number. |
| if (getLexer().isNot(AsmToken::Integer)) |
| return TokError(Twine("invalid ") + VersionName + |
| " minor version number, integer expected"); |
| int64_t MinorVal = getLexer().getTok().getIntVal(); |
| if (MinorVal > 255 || MinorVal < 0) |
| return TokError(Twine("invalid ") + VersionName + " minor version number"); |
| *Minor = MinorVal; |
| Lex(); |
| return false; |
| } |
| |
| /// parseOptionalTrailingVersionComponent ::= , version_number |
| bool DarwinAsmParser::parseOptionalTrailingVersionComponent( |
| unsigned *Component, const char *ComponentName) { |
| assert(getLexer().is(AsmToken::Comma) && "comma expected"); |
| Lex(); |
| if (getLexer().isNot(AsmToken::Integer)) |
| return TokError(Twine("invalid ") + ComponentName + |
| " version number, integer expected"); |
| int64_t Val = getLexer().getTok().getIntVal(); |
| if (Val > 255 || Val < 0) |
| return TokError(Twine("invalid ") + ComponentName + " version number"); |
| *Component = Val; |
| Lex(); |
| return false; |
| } |
| |
| /// parseVersion ::= parseMajorMinorVersionComponent |
| /// parseOptionalTrailingVersionComponent |
| bool DarwinAsmParser::parseVersion(unsigned *Major, unsigned *Minor, |
| unsigned *Update) { |
| if (parseMajorMinorVersionComponent(Major, Minor, "OS")) |
| return true; |
| |
| // Get the update level, if specified |
| *Update = 0; |
| if (getLexer().is(AsmToken::EndOfStatement) || |
| isSDKVersionToken(getLexer().getTok())) |
| return false; |
| if (getLexer().isNot(AsmToken::Comma)) |
| return TokError("invalid OS update specifier, comma expected"); |
| if (parseOptionalTrailingVersionComponent(Update, "OS update")) |
| return true; |
| return false; |
| } |
| |
| bool DarwinAsmParser::parseSDKVersion(VersionTuple &SDKVersion) { |
| assert(isSDKVersionToken(getLexer().getTok()) && "expected sdk_version"); |
| Lex(); |
| unsigned Major, Minor; |
| if (parseMajorMinorVersionComponent(&Major, &Minor, "SDK")) |
| return true; |
| SDKVersion = VersionTuple(Major, Minor); |
| |
| // Get the subminor version, if specified. |
| if (getLexer().is(AsmToken::Comma)) { |
| unsigned Subminor; |
| if (parseOptionalTrailingVersionComponent(&Subminor, "SDK subminor")) |
| return true; |
| SDKVersion = VersionTuple(Major, Minor, Subminor); |
| } |
| return false; |
| } |
| |
| void DarwinAsmParser::checkVersion(StringRef Directive, StringRef Arg, |
| SMLoc Loc, Triple::OSType ExpectedOS) { |
| const Triple &Target = getContext().getTargetTriple(); |
| if (Target.getOS() != ExpectedOS) |
| Warning(Loc, Twine(Directive) + |
| (Arg.empty() ? Twine() : Twine(' ') + Arg) + |
| " used while targeting " + Target.getOSName()); |
| |
| if (LastVersionDirective.isValid()) { |
| Warning(Loc, "overriding previous version directive"); |
| Note(LastVersionDirective, "previous definition is here"); |
| } |
| LastVersionDirective = Loc; |
| } |
| |
| static Triple::OSType getOSTypeFromMCVM(MCVersionMinType Type) { |
| switch (Type) { |
| case MCVM_WatchOSVersionMin: return Triple::WatchOS; |
| case MCVM_TvOSVersionMin: return Triple::TvOS; |
| case MCVM_IOSVersionMin: return Triple::IOS; |
| case MCVM_OSXVersionMin: return Triple::MacOSX; |
| } |
| llvm_unreachable("Invalid mc version min type"); |
| } |
| |
| /// parseVersionMin |
| /// ::= .ios_version_min parseVersion parseSDKVersion |
| /// | .macosx_version_min parseVersion parseSDKVersion |
| /// | .tvos_version_min parseVersion parseSDKVersion |
| /// | .watchos_version_min parseVersion parseSDKVersion |
| bool DarwinAsmParser::parseVersionMin(StringRef Directive, SMLoc Loc, |
| MCVersionMinType Type) { |
| unsigned Major; |
| unsigned Minor; |
| unsigned Update; |
| if (parseVersion(&Major, &Minor, &Update)) |
| return true; |
| |
| VersionTuple SDKVersion; |
| if (isSDKVersionToken(getLexer().getTok()) && parseSDKVersion(SDKVersion)) |
| return true; |
| |
| if (parseToken(AsmToken::EndOfStatement)) |
| return addErrorSuffix(Twine(" in '") + Directive + "' directive"); |
| |
| Triple::OSType ExpectedOS = getOSTypeFromMCVM(Type); |
| checkVersion(Directive, StringRef(), Loc, ExpectedOS); |
| getStreamer().emitVersionMin(Type, Major, Minor, Update, SDKVersion); |
| return false; |
| } |
| |
| static Triple::OSType getOSTypeFromPlatform(MachO::PlatformType Type) { |
| switch (Type) { |
| case MachO::PLATFORM_UNKNOWN: /* silence warning */ |
| break; |
| case MachO::PLATFORM_MACOS: return Triple::MacOSX; |
| case MachO::PLATFORM_IOS: return Triple::IOS; |
| case MachO::PLATFORM_TVOS: return Triple::TvOS; |
| case MachO::PLATFORM_WATCHOS: return Triple::WatchOS; |
| case MachO::PLATFORM_BRIDGEOS: /* silence warning */ break; |
| case MachO::PLATFORM_DRIVERKIT: |
| return Triple::DriverKit; |
| case MachO::PLATFORM_MACCATALYST: return Triple::IOS; |
| case MachO::PLATFORM_IOSSIMULATOR: /* silence warning */ break; |
| case MachO::PLATFORM_TVOSSIMULATOR: /* silence warning */ break; |
| case MachO::PLATFORM_WATCHOSSIMULATOR: /* silence warning */ break; |
| } |
| llvm_unreachable("Invalid mach-o platform type"); |
| } |
| |
| /// parseBuildVersion |
| /// ::= .build_version (macos|ios|tvos|watchos), parseVersion parseSDKVersion |
| bool DarwinAsmParser::parseBuildVersion(StringRef Directive, SMLoc Loc) { |
| StringRef PlatformName; |
| SMLoc PlatformLoc = getTok().getLoc(); |
| if (getParser().parseIdentifier(PlatformName)) |
| return TokError("platform name expected"); |
| |
| unsigned Platform = StringSwitch<unsigned>(PlatformName) |
| .Case("macos", MachO::PLATFORM_MACOS) |
| .Case("ios", MachO::PLATFORM_IOS) |
| .Case("tvos", MachO::PLATFORM_TVOS) |
| .Case("watchos", MachO::PLATFORM_WATCHOS) |
| .Case("macCatalyst", MachO::PLATFORM_MACCATALYST) |
| .Case("driverkit", MachO::PLATFORM_DRIVERKIT) |
| .Default(0); |
| if (Platform == 0) |
| return Error(PlatformLoc, "unknown platform name"); |
| |
| if (getLexer().isNot(AsmToken::Comma)) |
| return TokError("version number required, comma expected"); |
| Lex(); |
| |
| unsigned Major; |
| unsigned Minor; |
| unsigned Update; |
| if (parseVersion(&Major, &Minor, &Update)) |
| return true; |
| |
| VersionTuple SDKVersion; |
| if (isSDKVersionToken(getLexer().getTok()) && parseSDKVersion(SDKVersion)) |
| return true; |
| |
| if (parseToken(AsmToken::EndOfStatement)) |
| return addErrorSuffix(" in '.build_version' directive"); |
| |
| Triple::OSType ExpectedOS |
| = getOSTypeFromPlatform((MachO::PlatformType)Platform); |
| checkVersion(Directive, PlatformName, Loc, ExpectedOS); |
| getStreamer().emitBuildVersion(Platform, Major, Minor, Update, SDKVersion); |
| return false; |
| } |
| |
| /// parseDirectiveCGProfile |
| /// ::= .cg_profile from, to, count |
| bool DarwinAsmParser::parseDirectiveCGProfile(StringRef S, SMLoc Loc) { |
| return MCAsmParserExtension::ParseDirectiveCGProfile(S, Loc); |
| } |
| |
| namespace llvm { |
| |
| MCAsmParserExtension *createDarwinAsmParser() { |
| return new DarwinAsmParser; |
| } |
| |
| } // end llvm namespace |
