1 //===- MCTargetOptions.h - MC Target Options --------------------*- C++ -*-===// 2 // 3 // Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions. 4 // See https://llvm.org/LICENSE.txt for license information. 5 // SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception 6 // 7 //===----------------------------------------------------------------------===// 8 9 #ifndef LLVM_MC_MCTARGETOPTIONS_H 10 #define LLVM_MC_MCTARGETOPTIONS_H 11 12 #include "llvm/ADT/ArrayRef.h" 13 #include "llvm/Support/Compression.h" 14 #include <string> 15 #include <vector> 16 17 namespace llvm { 18 19 enum class ExceptionHandling { 20 None, ///< No exception support 21 DwarfCFI, ///< DWARF-like instruction based exceptions 22 SjLj, ///< setjmp/longjmp based exceptions 23 ARM, ///< ARM EHABI 24 WinEH, ///< Windows Exception Handling 25 Wasm, ///< WebAssembly Exception Handling 26 AIX, ///< AIX Exception Handling 27 ZOS, ///< z/OS MVS Exception Handling. Very similar to DwarfCFI, but the PPA1 28 ///< is used instead of an .eh_frame section. 29 }; 30 31 enum class EmitDwarfUnwindType { 32 Always, // Always emit dwarf unwind 33 NoCompactUnwind, // Only emit if compact unwind isn't available 34 Default, // Default behavior is based on the target 35 }; 36 37 class StringRef; 38 39 class MCTargetOptions { 40 public: 41 enum AsmInstrumentation { 42 AsmInstrumentationNone, 43 AsmInstrumentationAddress 44 }; 45 46 bool MCRelaxAll : 1; 47 bool MCNoExecStack : 1; 48 bool MCFatalWarnings : 1; 49 bool MCNoWarn : 1; 50 bool MCNoDeprecatedWarn : 1; 51 bool MCNoTypeCheck : 1; 52 bool MCSaveTempLabels : 1; 53 bool MCIncrementalLinkerCompatible : 1; 54 bool FDPIC : 1; 55 bool ShowMCEncoding : 1; 56 bool ShowMCInst : 1; 57 bool AsmVerbose : 1; 58 59 /// Preserve Comments in Assembly. 60 bool PreserveAsmComments : 1; 61 62 bool Dwarf64 : 1; 63 64 // Use CREL relocation format for ELF. 65 bool Crel = false; 66 67 // If true, prefer R_X86_64_[REX_]GOTPCRELX to R_X86_64_GOTPCREL on x86-64 68 // ELF. 69 bool X86RelaxRelocations = true; 70 71 bool X86Sse2Avx = false; 72 73 EmitDwarfUnwindType EmitDwarfUnwind; 74 75 int DwarfVersion = 0; 76 77 enum DwarfDirectory { 78 // Force disable 79 DisableDwarfDirectory, 80 // Force enable, for assemblers that support 81 // `.file fileno directory filename' syntax 82 EnableDwarfDirectory, 83 // Default is based on the target 84 DefaultDwarfDirectory 85 }; 86 DwarfDirectory MCUseDwarfDirectory; 87 88 // Whether to compress DWARF debug sections. 89 DebugCompressionType CompressDebugSections = DebugCompressionType::None; 90 91 std::string ABIName; 92 std::string AssemblyLanguage; 93 std::string SplitDwarfFile; 94 std::string AsSecureLogFile; 95 96 const char *Argv0 = nullptr; 97 ArrayRef<std::string> CommandLineArgs; 98 99 /// Additional paths to search for `.include` directives when using the 100 /// integrated assembler. 101 std::vector<std::string> IASSearchPaths; 102 103 // Whether to emit compact-unwind for non-canonical personality 104 // functions on Darwins. 105 bool EmitCompactUnwindNonCanonical : 1; 106 107 // Whether or not to use full register names on PowerPC. 108 bool PPCUseFullRegisterNames : 1; 109 110 MCTargetOptions(); 111 112 /// getABIName - If this returns a non-empty string this represents the 113 /// textual name of the ABI that we want the backend to use, e.g. o32, or 114 /// aapcs-linux. 115 StringRef getABIName() const; 116 117 /// getAssemblyLanguage - If this returns a non-empty string this represents 118 /// the textual name of the assembly language that we will use for this 119 /// target, e.g. masm. 120 StringRef getAssemblyLanguage() const; 121 }; 122 123 } // end namespace llvm 124 125 #endif // LLVM_MC_MCTARGETOPTIONS_H 126