1148 lines
40 KiB
C++
1148 lines
40 KiB
C++
//===- DarwinAsmParser.cpp - Darwin (Mach-O) Assembly Parser --------------===//
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//
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// The LLVM Compiler Infrastructure
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//
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// This file is distributed under the University of Illinois Open Source
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// License. See LICENSE.TXT for details.
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//
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//===----------------------------------------------------------------------===//
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#include "llvm/ADT/STLExtras.h"
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#include "llvm/ADT/SmallVector.h"
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#include "llvm/ADT/StringRef.h"
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#include "llvm/ADT/StringSwitch.h"
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#include "llvm/ADT/Triple.h"
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#include "llvm/ADT/Twine.h"
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#include "llvm/BinaryFormat/MachO.h"
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#include "llvm/MC/MCContext.h"
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#include "llvm/MC/MCDirectives.h"
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#include "llvm/MC/MCObjectFileInfo.h"
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#include "llvm/MC/MCParser/MCAsmLexer.h"
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#include "llvm/MC/MCParser/MCAsmParser.h"
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#include "llvm/MC/MCParser/MCAsmParserExtension.h"
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#include "llvm/MC/MCSectionMachO.h"
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#include "llvm/MC/MCStreamer.h"
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#include "llvm/MC/MCSymbol.h"
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#include "llvm/MC/SectionKind.h"
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#include "llvm/Support/FileSystem.h"
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#include "llvm/Support/MemoryBuffer.h"
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#include "llvm/Support/SMLoc.h"
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#include "llvm/Support/SourceMgr.h"
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#include "llvm/Support/raw_ostream.h"
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#include <algorithm>
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#include <cstddef>
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#include <cstdint>
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#include <string>
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#include <system_error>
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#include <utility>
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using namespace llvm;
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namespace {
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/// Implementation of directive handling which is shared across all
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/// Darwin targets.
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class DarwinAsmParser : public MCAsmParserExtension {
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template<bool (DarwinAsmParser::*HandlerMethod)(StringRef, SMLoc)>
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void addDirectiveHandler(StringRef Directive) {
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MCAsmParser::ExtensionDirectiveHandler Handler = std::make_pair(
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this, HandleDirective<DarwinAsmParser, HandlerMethod>);
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getParser().addDirectiveHandler(Directive, Handler);
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}
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bool parseSectionSwitch(StringRef Segment, StringRef Section,
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unsigned TAA = 0, unsigned ImplicitAlign = 0,
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unsigned StubSize = 0);
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SMLoc LastVersionDirective;
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public:
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DarwinAsmParser() = default;
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void Initialize(MCAsmParser &Parser) override {
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// Call the base implementation.
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this->MCAsmParserExtension::Initialize(Parser);
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addDirectiveHandler<&DarwinAsmParser::parseDirectiveAltEntry>(".alt_entry");
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addDirectiveHandler<&DarwinAsmParser::parseDirectiveDesc>(".desc");
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addDirectiveHandler<&DarwinAsmParser::parseDirectiveIndirectSymbol>(
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".indirect_symbol");
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addDirectiveHandler<&DarwinAsmParser::parseDirectiveLsym>(".lsym");
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addDirectiveHandler<&DarwinAsmParser::parseDirectiveSubsectionsViaSymbols>(
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".subsections_via_symbols");
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addDirectiveHandler<&DarwinAsmParser::parseDirectiveDumpOrLoad>(".dump");
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addDirectiveHandler<&DarwinAsmParser::parseDirectiveDumpOrLoad>(".load");
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addDirectiveHandler<&DarwinAsmParser::parseDirectiveSection>(".section");
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addDirectiveHandler<&DarwinAsmParser::parseDirectivePushSection>(
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".pushsection");
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addDirectiveHandler<&DarwinAsmParser::parseDirectivePopSection>(
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".popsection");
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addDirectiveHandler<&DarwinAsmParser::parseDirectivePrevious>(".previous");
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addDirectiveHandler<&DarwinAsmParser::parseDirectiveSecureLogUnique>(
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".secure_log_unique");
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addDirectiveHandler<&DarwinAsmParser::parseDirectiveSecureLogReset>(
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".secure_log_reset");
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addDirectiveHandler<&DarwinAsmParser::parseDirectiveTBSS>(".tbss");
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addDirectiveHandler<&DarwinAsmParser::parseDirectiveZerofill>(".zerofill");
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addDirectiveHandler<&DarwinAsmParser::parseDirectiveDataRegion>(
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".data_region");
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addDirectiveHandler<&DarwinAsmParser::parseDirectiveDataRegionEnd>(
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".end_data_region");
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// Special section directives.
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addDirectiveHandler<&DarwinAsmParser::parseSectionDirectiveBss>(".bss");
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addDirectiveHandler<&DarwinAsmParser::parseSectionDirectiveConst>(".const");
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addDirectiveHandler<&DarwinAsmParser::parseSectionDirectiveConstData>(
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".const_data");
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addDirectiveHandler<&DarwinAsmParser::parseSectionDirectiveConstructor>(
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".constructor");
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addDirectiveHandler<&DarwinAsmParser::parseSectionDirectiveCString>(
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".cstring");
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addDirectiveHandler<&DarwinAsmParser::parseSectionDirectiveData>(".data");
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addDirectiveHandler<&DarwinAsmParser::parseSectionDirectiveDestructor>(
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".destructor");
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addDirectiveHandler<&DarwinAsmParser::parseSectionDirectiveDyld>(".dyld");
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addDirectiveHandler<&DarwinAsmParser::parseSectionDirectiveFVMLibInit0>(
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".fvmlib_init0");
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addDirectiveHandler<&DarwinAsmParser::parseSectionDirectiveFVMLibInit1>(
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".fvmlib_init1");
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addDirectiveHandler<
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&DarwinAsmParser::parseSectionDirectiveLazySymbolPointers>(
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".lazy_symbol_pointer");
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addDirectiveHandler<&DarwinAsmParser::parseDirectiveLinkerOption>(
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".linker_option");
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addDirectiveHandler<&DarwinAsmParser::parseSectionDirectiveLiteral16>(
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".literal16");
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addDirectiveHandler<&DarwinAsmParser::parseSectionDirectiveLiteral4>(
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".literal4");
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addDirectiveHandler<&DarwinAsmParser::parseSectionDirectiveLiteral8>(
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".literal8");
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addDirectiveHandler<&DarwinAsmParser::parseSectionDirectiveModInitFunc>(
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".mod_init_func");
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addDirectiveHandler<&DarwinAsmParser::parseSectionDirectiveModTermFunc>(
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".mod_term_func");
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addDirectiveHandler<
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&DarwinAsmParser::parseSectionDirectiveNonLazySymbolPointers>(
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".non_lazy_symbol_pointer");
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addDirectiveHandler<
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&DarwinAsmParser::parseSectionDirectiveThreadLocalVariablePointers>(
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".thread_local_variable_pointer");
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addDirectiveHandler<&DarwinAsmParser::parseSectionDirectiveObjCCatClsMeth>(
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".objc_cat_cls_meth");
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addDirectiveHandler<&DarwinAsmParser::parseSectionDirectiveObjCCatInstMeth>(
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".objc_cat_inst_meth");
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addDirectiveHandler<&DarwinAsmParser::parseSectionDirectiveObjCCategory>(
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".objc_category");
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addDirectiveHandler<&DarwinAsmParser::parseSectionDirectiveObjCClass>(
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".objc_class");
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addDirectiveHandler<&DarwinAsmParser::parseSectionDirectiveObjCClassNames>(
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".objc_class_names");
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addDirectiveHandler<&DarwinAsmParser::parseSectionDirectiveObjCClassVars>(
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".objc_class_vars");
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addDirectiveHandler<&DarwinAsmParser::parseSectionDirectiveObjCClsMeth>(
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".objc_cls_meth");
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addDirectiveHandler<&DarwinAsmParser::parseSectionDirectiveObjCClsRefs>(
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".objc_cls_refs");
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addDirectiveHandler<&DarwinAsmParser::parseSectionDirectiveObjCInstMeth>(
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".objc_inst_meth");
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addDirectiveHandler<
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&DarwinAsmParser::parseSectionDirectiveObjCInstanceVars>(
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".objc_instance_vars");
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addDirectiveHandler<&DarwinAsmParser::parseSectionDirectiveObjCMessageRefs>(
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".objc_message_refs");
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addDirectiveHandler<&DarwinAsmParser::parseSectionDirectiveObjCMetaClass>(
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".objc_meta_class");
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addDirectiveHandler<
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&DarwinAsmParser::parseSectionDirectiveObjCMethVarNames>(
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".objc_meth_var_names");
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addDirectiveHandler<
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&DarwinAsmParser::parseSectionDirectiveObjCMethVarTypes>(
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".objc_meth_var_types");
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addDirectiveHandler<&DarwinAsmParser::parseSectionDirectiveObjCModuleInfo>(
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".objc_module_info");
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addDirectiveHandler<&DarwinAsmParser::parseSectionDirectiveObjCProtocol>(
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".objc_protocol");
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addDirectiveHandler<
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&DarwinAsmParser::parseSectionDirectiveObjCSelectorStrs>(
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".objc_selector_strs");
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addDirectiveHandler<
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&DarwinAsmParser::parseSectionDirectiveObjCStringObject>(
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".objc_string_object");
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addDirectiveHandler<&DarwinAsmParser::parseSectionDirectiveObjCSymbols>(
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".objc_symbols");
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addDirectiveHandler<&DarwinAsmParser::parseSectionDirectivePICSymbolStub>(
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".picsymbol_stub");
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addDirectiveHandler<&DarwinAsmParser::parseSectionDirectiveStaticConst>(
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".static_const");
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addDirectiveHandler<&DarwinAsmParser::parseSectionDirectiveStaticData>(
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".static_data");
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addDirectiveHandler<&DarwinAsmParser::parseSectionDirectiveSymbolStub>(
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".symbol_stub");
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addDirectiveHandler<&DarwinAsmParser::parseSectionDirectiveTData>(".tdata");
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addDirectiveHandler<&DarwinAsmParser::parseSectionDirectiveText>(".text");
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addDirectiveHandler<&DarwinAsmParser::parseSectionDirectiveThreadInitFunc>(
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".thread_init_func");
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addDirectiveHandler<&DarwinAsmParser::parseSectionDirectiveTLV>(".tlv");
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addDirectiveHandler<&DarwinAsmParser::parseSectionDirectiveIdent>(".ident");
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addDirectiveHandler<&DarwinAsmParser::parseWatchOSVersionMin>(
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".watchos_version_min");
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addDirectiveHandler<&DarwinAsmParser::parseTvOSVersionMin>(
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".tvos_version_min");
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addDirectiveHandler<&DarwinAsmParser::parseIOSVersionMin>(
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".ios_version_min");
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addDirectiveHandler<&DarwinAsmParser::parseMacOSXVersionMin>(
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".macosx_version_min");
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addDirectiveHandler<&DarwinAsmParser::parseBuildVersion>(".build_version");
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LastVersionDirective = SMLoc();
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}
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bool parseDirectiveAltEntry(StringRef, SMLoc);
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bool parseDirectiveDesc(StringRef, SMLoc);
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bool parseDirectiveIndirectSymbol(StringRef, SMLoc);
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bool parseDirectiveDumpOrLoad(StringRef, SMLoc);
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bool parseDirectiveLsym(StringRef, SMLoc);
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bool parseDirectiveLinkerOption(StringRef, SMLoc);
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bool parseDirectiveSection(StringRef, SMLoc);
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bool parseDirectivePushSection(StringRef, SMLoc);
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bool parseDirectivePopSection(StringRef, SMLoc);
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bool parseDirectivePrevious(StringRef, SMLoc);
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bool parseDirectiveSecureLogReset(StringRef, SMLoc);
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bool parseDirectiveSecureLogUnique(StringRef, SMLoc);
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bool parseDirectiveSubsectionsViaSymbols(StringRef, SMLoc);
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bool parseDirectiveTBSS(StringRef, SMLoc);
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bool parseDirectiveZerofill(StringRef, SMLoc);
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bool parseDirectiveDataRegion(StringRef, SMLoc);
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bool parseDirectiveDataRegionEnd(StringRef, SMLoc);
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// Named Section Directive
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bool parseSectionDirectiveBss(StringRef, SMLoc) {
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return parseSectionSwitch("__DATA", "__bss");
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}
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bool parseSectionDirectiveConst(StringRef, SMLoc) {
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return parseSectionSwitch("__TEXT", "__const");
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}
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bool parseSectionDirectiveStaticConst(StringRef, SMLoc) {
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return parseSectionSwitch("__TEXT", "__static_const");
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}
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bool parseSectionDirectiveCString(StringRef, SMLoc) {
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return parseSectionSwitch("__TEXT","__cstring",
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MachO::S_CSTRING_LITERALS);
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}
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bool parseSectionDirectiveLiteral4(StringRef, SMLoc) {
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return parseSectionSwitch("__TEXT", "__literal4",
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MachO::S_4BYTE_LITERALS, 4);
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}
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bool parseSectionDirectiveLiteral8(StringRef, SMLoc) {
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return parseSectionSwitch("__TEXT", "__literal8",
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MachO::S_8BYTE_LITERALS, 8);
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}
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bool parseSectionDirectiveLiteral16(StringRef, SMLoc) {
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return parseSectionSwitch("__TEXT","__literal16",
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MachO::S_16BYTE_LITERALS, 16);
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}
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bool parseSectionDirectiveConstructor(StringRef, SMLoc) {
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return parseSectionSwitch("__TEXT","__constructor");
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}
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bool parseSectionDirectiveDestructor(StringRef, SMLoc) {
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return parseSectionSwitch("__TEXT","__destructor");
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}
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bool parseSectionDirectiveFVMLibInit0(StringRef, SMLoc) {
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return parseSectionSwitch("__TEXT","__fvmlib_init0");
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}
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bool parseSectionDirectiveFVMLibInit1(StringRef, SMLoc) {
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return parseSectionSwitch("__TEXT","__fvmlib_init1");
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}
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bool parseSectionDirectiveSymbolStub(StringRef, SMLoc) {
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return parseSectionSwitch("__TEXT","__symbol_stub",
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MachO::S_SYMBOL_STUBS |
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MachO::S_ATTR_PURE_INSTRUCTIONS,
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// FIXME: Different on PPC and ARM.
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0, 16);
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}
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bool parseSectionDirectivePICSymbolStub(StringRef, SMLoc) {
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return parseSectionSwitch("__TEXT","__picsymbol_stub",
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MachO::S_SYMBOL_STUBS |
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MachO::S_ATTR_PURE_INSTRUCTIONS, 0, 26);
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}
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bool parseSectionDirectiveData(StringRef, SMLoc) {
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return parseSectionSwitch("__DATA", "__data");
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}
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bool parseSectionDirectiveStaticData(StringRef, SMLoc) {
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return parseSectionSwitch("__DATA", "__static_data");
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}
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bool parseSectionDirectiveNonLazySymbolPointers(StringRef, SMLoc) {
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return parseSectionSwitch("__DATA", "__nl_symbol_ptr",
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MachO::S_NON_LAZY_SYMBOL_POINTERS, 4);
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}
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bool parseSectionDirectiveLazySymbolPointers(StringRef, SMLoc) {
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return parseSectionSwitch("__DATA", "__la_symbol_ptr",
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MachO::S_LAZY_SYMBOL_POINTERS, 4);
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}
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bool parseSectionDirectiveThreadLocalVariablePointers(StringRef, SMLoc) {
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return parseSectionSwitch("__DATA", "__thread_ptr",
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MachO::S_THREAD_LOCAL_VARIABLE_POINTERS, 4);
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}
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bool parseSectionDirectiveDyld(StringRef, SMLoc) {
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return parseSectionSwitch("__DATA", "__dyld");
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}
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bool parseSectionDirectiveModInitFunc(StringRef, SMLoc) {
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return parseSectionSwitch("__DATA", "__mod_init_func",
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MachO::S_MOD_INIT_FUNC_POINTERS, 4);
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}
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bool parseSectionDirectiveModTermFunc(StringRef, SMLoc) {
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return parseSectionSwitch("__DATA", "__mod_term_func",
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MachO::S_MOD_TERM_FUNC_POINTERS, 4);
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}
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bool parseSectionDirectiveConstData(StringRef, SMLoc) {
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return parseSectionSwitch("__DATA", "__const");
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}
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bool parseSectionDirectiveObjCClass(StringRef, SMLoc) {
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return parseSectionSwitch("__OBJC", "__class",
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MachO::S_ATTR_NO_DEAD_STRIP);
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}
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bool parseSectionDirectiveObjCMetaClass(StringRef, SMLoc) {
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return parseSectionSwitch("__OBJC", "__meta_class",
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MachO::S_ATTR_NO_DEAD_STRIP);
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}
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bool parseSectionDirectiveObjCCatClsMeth(StringRef, SMLoc) {
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return parseSectionSwitch("__OBJC", "__cat_cls_meth",
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MachO::S_ATTR_NO_DEAD_STRIP);
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}
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bool parseSectionDirectiveObjCCatInstMeth(StringRef, SMLoc) {
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return parseSectionSwitch("__OBJC", "__cat_inst_meth",
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MachO::S_ATTR_NO_DEAD_STRIP);
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}
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bool parseSectionDirectiveObjCProtocol(StringRef, SMLoc) {
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return parseSectionSwitch("__OBJC", "__protocol",
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MachO::S_ATTR_NO_DEAD_STRIP);
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}
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bool parseSectionDirectiveObjCStringObject(StringRef, SMLoc) {
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return parseSectionSwitch("__OBJC", "__string_object",
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MachO::S_ATTR_NO_DEAD_STRIP);
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}
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bool parseSectionDirectiveObjCClsMeth(StringRef, SMLoc) {
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return parseSectionSwitch("__OBJC", "__cls_meth",
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MachO::S_ATTR_NO_DEAD_STRIP);
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}
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bool parseSectionDirectiveObjCInstMeth(StringRef, SMLoc) {
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return parseSectionSwitch("__OBJC", "__inst_meth",
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MachO::S_ATTR_NO_DEAD_STRIP);
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}
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bool parseSectionDirectiveObjCClsRefs(StringRef, SMLoc) {
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return parseSectionSwitch("__OBJC", "__cls_refs",
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MachO::S_ATTR_NO_DEAD_STRIP |
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MachO::S_LITERAL_POINTERS, 4);
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}
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bool parseSectionDirectiveObjCMessageRefs(StringRef, SMLoc) {
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return parseSectionSwitch("__OBJC", "__message_refs",
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MachO::S_ATTR_NO_DEAD_STRIP |
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MachO::S_LITERAL_POINTERS, 4);
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}
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bool parseSectionDirectiveObjCSymbols(StringRef, SMLoc) {
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return parseSectionSwitch("__OBJC", "__symbols",
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MachO::S_ATTR_NO_DEAD_STRIP);
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}
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bool parseSectionDirectiveObjCCategory(StringRef, SMLoc) {
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return parseSectionSwitch("__OBJC", "__category",
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MachO::S_ATTR_NO_DEAD_STRIP);
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}
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bool parseSectionDirectiveObjCClassVars(StringRef, SMLoc) {
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return parseSectionSwitch("__OBJC", "__class_vars",
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MachO::S_ATTR_NO_DEAD_STRIP);
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}
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bool parseSectionDirectiveObjCInstanceVars(StringRef, SMLoc) {
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return parseSectionSwitch("__OBJC", "__instance_vars",
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MachO::S_ATTR_NO_DEAD_STRIP);
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}
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bool parseSectionDirectiveObjCModuleInfo(StringRef, SMLoc) {
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return parseSectionSwitch("__OBJC", "__module_info",
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MachO::S_ATTR_NO_DEAD_STRIP);
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}
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bool parseSectionDirectiveObjCClassNames(StringRef, SMLoc) {
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return parseSectionSwitch("__TEXT", "__cstring",
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MachO::S_CSTRING_LITERALS);
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}
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bool parseSectionDirectiveObjCMethVarTypes(StringRef, SMLoc) {
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return parseSectionSwitch("__TEXT", "__cstring",
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MachO::S_CSTRING_LITERALS);
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}
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bool parseSectionDirectiveObjCMethVarNames(StringRef, SMLoc) {
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return parseSectionSwitch("__TEXT", "__cstring",
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MachO::S_CSTRING_LITERALS);
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}
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bool parseSectionDirectiveObjCSelectorStrs(StringRef, SMLoc) {
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return parseSectionSwitch("__OBJC", "__selector_strs",
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MachO::S_CSTRING_LITERALS);
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}
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bool parseSectionDirectiveTData(StringRef, SMLoc) {
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return parseSectionSwitch("__DATA", "__thread_data",
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MachO::S_THREAD_LOCAL_REGULAR);
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}
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bool parseSectionDirectiveText(StringRef, SMLoc) {
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return parseSectionSwitch("__TEXT", "__text",
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MachO::S_ATTR_PURE_INSTRUCTIONS);
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}
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bool parseSectionDirectiveTLV(StringRef, SMLoc) {
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return parseSectionSwitch("__DATA", "__thread_vars",
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MachO::S_THREAD_LOCAL_VARIABLES);
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}
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bool parseSectionDirectiveIdent(StringRef, SMLoc) {
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// Darwin silently ignores the .ident directive.
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getParser().eatToEndOfStatement();
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return false;
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}
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|
|
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 parseVersion(unsigned *Major, unsigned *Minor, unsigned *Update);
|
|
void checkVersion(StringRef Directive, StringRef Arg, SMLoc Loc,
|
|
Triple::OSType ExpectedOS);
|
|
};
|
|
|
|
} // end anonymous namespace
|
|
|
|
bool DarwinAsmParser::parseSectionSwitch(StringRef Segment, StringRef Section,
|
|
unsigned TAA, unsigned Align,
|
|
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 (Align)
|
|
getStreamer().EmitValueToAlignment(Align);
|
|
|
|
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 = 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;
|
|
std::string ErrorStr =
|
|
MCSectionMachO::ParseSectionSpecifier(SectionSpec, Segment, Section,
|
|
TAA, TAAParsed, StubSize);
|
|
|
|
if (!ErrorStr.empty())
|
|
return Error(Loc, ErrorStr);
|
|
|
|
// Issue a warning if the target is not powerpc and Section is a *coal* section.
|
|
Triple TT = getParser().getContext().getObjectFileInfo()->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.
|
|
const char *SecureLogFile = getContext().getSecureLogFile();
|
|
if (!SecureLogFile)
|
|
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 = llvm::make_unique<raw_fd_ostream>(
|
|
StringRef(SecureLogFile), EC, sys::fs::F_Append | sys::fs::F_Text);
|
|
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, 1 << 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, /*ByteAlignment=*/0, 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, 1 << 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;
|
|
}
|
|
|
|
/// parseVersion ::= major, minor [, update]
|
|
bool DarwinAsmParser::parseVersion(unsigned *Major, unsigned *Minor,
|
|
unsigned *Update) {
|
|
// Get the major version number.
|
|
if (getLexer().isNot(AsmToken::Integer))
|
|
return TokError("invalid OS major version number, integer expected");
|
|
int64_t MajorVal = getLexer().getTok().getIntVal();
|
|
if (MajorVal > 65535 || MajorVal <= 0)
|
|
return TokError("invalid OS major version number");
|
|
*Major = (unsigned)MajorVal;
|
|
Lex();
|
|
if (getLexer().isNot(AsmToken::Comma))
|
|
return TokError("OS minor version number required, comma expected");
|
|
Lex();
|
|
// Get the minor version number.
|
|
if (getLexer().isNot(AsmToken::Integer))
|
|
return TokError("invalid OS minor version number, integer expected");
|
|
int64_t MinorVal = getLexer().getTok().getIntVal();
|
|
if (MinorVal > 255 || MinorVal < 0)
|
|
return TokError("invalid OS minor version number");
|
|
*Minor = MinorVal;
|
|
Lex();
|
|
|
|
// Get the update level, if specified
|
|
*Update = 0;
|
|
if (getLexer().is(AsmToken::EndOfStatement))
|
|
return false;
|
|
if (getLexer().isNot(AsmToken::Comma))
|
|
return TokError("invalid OS update specifier, comma expected");
|
|
Lex();
|
|
if (getLexer().isNot(AsmToken::Integer))
|
|
return TokError("invalid OS update version number, integer expected");
|
|
int64_t UpdateVal = getLexer().getTok().getIntVal();
|
|
if (UpdateVal > 255 || UpdateVal < 0)
|
|
return TokError("invalid OS update version number");
|
|
*Update = UpdateVal;
|
|
Lex();
|
|
return false;
|
|
}
|
|
|
|
void DarwinAsmParser::checkVersion(StringRef Directive, StringRef Arg,
|
|
SMLoc Loc, Triple::OSType ExpectedOS) {
|
|
const Triple &Target = getContext().getObjectFileInfo()->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
|
|
/// | .macosx_version_min parseVersion
|
|
/// | .tvos_version_min parseVersion
|
|
/// | .watchos_version_min parseVersion
|
|
bool DarwinAsmParser::parseVersionMin(StringRef Directive, SMLoc Loc,
|
|
MCVersionMinType Type) {
|
|
unsigned Major;
|
|
unsigned Minor;
|
|
unsigned Update;
|
|
if (parseVersion(&Major, &Minor, &Update))
|
|
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);
|
|
return false;
|
|
}
|
|
|
|
static Triple::OSType getOSTypeFromPlatform(MachO::PlatformType Type) {
|
|
switch (Type) {
|
|
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;
|
|
}
|
|
llvm_unreachable("Invalid mach-o platform type");
|
|
}
|
|
|
|
/// parseBuildVersion
|
|
/// ::= .build_version (macos|ios|tvos|watchos), parseVersion
|
|
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)
|
|
.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;
|
|
|
|
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);
|
|
return false;
|
|
}
|
|
|
|
|
|
namespace llvm {
|
|
|
|
MCAsmParserExtension *createDarwinAsmParser() {
|
|
return new DarwinAsmParser;
|
|
}
|
|
|
|
} // end llvm namespace
|