1 //===-- cc1as_main.cpp - Clang Assembler  ---------------------------------===//
5 // SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
7 //===----------------------------------------------------------------------===//
9 // This is the entry point to the clang -cc1as functionality, which implements
12 //===----------------------------------------------------------------------===//
80   /// The list of target specific features to enable or disable -- this should
81   /// be a list of strings starting with '+' or '-'.
164   // Whether to emit compact-unwind for non-canonical entries.
175   /// The ABI targeted by the backend. Specified using -target-abi. Empty
183   /// The version of the darwin target variant SDK which was used during the
195     InputFile = "-";  in AssemblerInvocation()
196     OutputPath = "-";  in AssemblerInvocation()
238     Diags.Report(diag::err_drv_missing_argument)  in CreateFromArgs()
245     auto ArgString = A->getAsString(Args);  in CreateFromArgs()
248       Diags.Report(diag::err_drv_unknown_argument) << ArgString;  in CreateFromArgs()
250       Diags.Report(diag::err_drv_unknown_argument_with_suggestion)  in CreateFromArgs()
260     Opts.DarwinTargetVariantTriple = llvm::Triple(A->getValue());  in CreateFromArgs()
262     VersionTuple Version;  in CreateFromArgs()  local
263     if (Version.tryParse(A->getValue()))  in CreateFromArgs()
264       Diags.Report(diag::err_drv_invalid_value)  in CreateFromArgs()
265           << A->getAsString(Args) << A->getValue();  in CreateFromArgs()
267       Opts.DarwinTargetVariantSDKVersion = Version;  in CreateFromArgs()
286         llvm::StringSwitch<llvm::DebugCompressionType>(A->getValue())  in CreateFromArgs()
296     Opts.Dwarf64 = DwarfFormatArg->getOption().matches(OPT_gdwarf64);  in CreateFromArgs()
304     Opts.DebugCompilationDir = A->getValue();  in CreateFromArgs()
317         Opts.InputFile = A->getValue();  in CreateFromArgs()
320         Diags.Report(diag::err_drv_unknown_argument) << A->getAsString(Args);  in CreateFromArgs()
330     StringRef Name = A->getValue();  in CreateFromArgs()
337       Diags.Report(diag::err_drv_invalid_value) << A->getAsString(Args) << Name;  in CreateFromArgs()
364   // EmbedBitcode Option. If -fembed-bitcode is enabled, set the flag.  in CreateFromArgs()
367     Opts.EmbedBitcode = llvm::StringSwitch<unsigned>(A->getValue())  in CreateFromArgs()
376         llvm::StringSwitch<EmitDwarfUnwindType>(A->getValue())  in CreateFromArgs()
378             .Case("no-compact-unwind", EmitDwarfUnwindType::NoCompactUnwind)  in CreateFromArgs()
395   if (Path != "-")  in getOutputStream()
402     Diags.Report(diag::err_fe_unable_to_open_output) << Path << EC.message();  in getOutputStream()
415     return Diags.Report(diag::err_target_unknown_triple) << Opts.Triple;  in ExecuteAssemblerImpl()
421     return Diags.Report(diag::err_fe_error_reading)  in ExecuteAssemblerImpl()
434   std::unique_ptr<MCRegisterInfo> MRI(TheTarget->createMCRegInfo(Opts.Triple));  in ExecuteAssemblerImpl()
449       TheTarget->createMCAsmInfo(*MRI, Opts.Triple, MCOptions));  in ExecuteAssemblerImpl()
458     Opts.OutputPath = "-";  in ExecuteAssemblerImpl()
471       TheTarget->createMCSubtargetInfo(Opts.Triple, Opts.CPU, FS));  in ExecuteAssemblerImpl()
483     assert(Opts.RelocationModel == "dynamic-no-pic" &&  in ExecuteAssemblerImpl()
491       TheTarget->createMCObjectFileInfo(Ctx, PIC));  in ExecuteAssemblerImpl()
493     MOFI->setDarwinTargetVariantTriple(*Opts.DarwinTargetVariantTriple);  in ExecuteAssemblerImpl()
495     MOFI->setDarwinTargetVariantSDKVersion(Opts.DarwinTargetVariantSDKVersion);  in ExecuteAssemblerImpl()
521                             SrcMgr.getMemoryBuffer(BufferIndex)->getBuffer());  in ExecuteAssemblerImpl()
525   std::unique_ptr<MCInstrInfo> MCII(TheTarget->createMCInstrInfo());  in ExecuteAssemblerImpl()
541     MCInstPrinter *IP = TheTarget->createMCInstPrinter(  in ExecuteAssemblerImpl()
546       CE.reset(TheTarget->createMCCodeEmitter(*MCII, Ctx));  in ExecuteAssemblerImpl()
548         TheTarget->createMCAsmBackend(*STI, *MRI, MCOptions));  in ExecuteAssemblerImpl()
551     Str.reset(TheTarget->createAsmStreamer(Ctx, std::move(FOut), IP,  in ExecuteAssemblerImpl()
558     if (!FDOS->supportsSeeking()) {  in ExecuteAssemblerImpl()
564         TheTarget->createMCCodeEmitter(*MCII, Ctx));  in ExecuteAssemblerImpl()
566         TheTarget->createMCAsmBackend(*STI, *MRI, MCOptions));  in ExecuteAssemblerImpl()
570         DwoOS ? MAB->createDwoObjectWriter(*Out, *DwoOS)  in ExecuteAssemblerImpl()
571               : MAB->createObjectWriter(*Out);  in ExecuteAssemblerImpl()
574     Str.reset(TheTarget->createMCObjectStreamer(  in ExecuteAssemblerImpl()
576     Str.get()->initSections(Opts.NoExecStack, *STI);  in ExecuteAssemblerImpl()
579   // When -fembed-bitcode is passed to clang_as, a 1-byte marker  in ExecuteAssemblerImpl()
584     Str.get()->switchSection(AsmLabel);  in ExecuteAssemblerImpl()
585     Str.get()->emitZeros(1);  in ExecuteAssemblerImpl()
595       TheTarget->createMCAsmParser(*STI, *Parser, *MCII, MCOptions));  in ExecuteAssemblerImpl()
597     Failed = Diags.Report(diag::err_target_unknown_triple) << Opts.Triple;  in ExecuteAssemblerImpl()
607     Ctx.setSymbolValue(Parser->getStreamer(), Sym, Value);  in ExecuteAssemblerImpl()
611     Parser->setTargetParser(*TAP.get());  in ExecuteAssemblerImpl()
612     Failed = Parser->Run(Opts.NoInitialTextSection);  in ExecuteAssemblerImpl()
624     if (Opts.OutputPath != "-")  in ExecuteAssembler()
626     if (!Opts.SplitDwarfOutput.empty() && Opts.SplitDwarfOutput != "-")  in ExecuteAssembler()
637   Diags.Report(diag::err_fe_error_backend) << Message;  in LLVMErrorHandler()
653   DiagClient->setPrefix("clang -cc1as");  in cc1as_main()
669         llvm::outs(), "clang -cc1as [options] file...",  in cc1as_main()
677   // Honor -version.  in cc1as_main()
679   // FIXME: Use a better -version message?  in cc1as_main()
685   // Honor -mllvm.  in cc1as_main()