1 //===--- RISCV.h - Declare RISCV target feature support ---------*- 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 // This file declares RISCV TargetInfo objects. 10 // 11 //===----------------------------------------------------------------------===// 12 13 #ifndef LLVM_CLANG_LIB_BASIC_TARGETS_RISCV_H 14 #define LLVM_CLANG_LIB_BASIC_TARGETS_RISCV_H 15 16 #include "clang/Basic/TargetInfo.h" 17 #include "clang/Basic/TargetOptions.h" 18 #include "llvm/ADT/Triple.h" 19 #include "llvm/Support/Compiler.h" 20 21 namespace clang { 22 namespace targets { 23 24 // RISC-V Target 25 class RISCVTargetInfo : public TargetInfo { setDataLayout()26 void setDataLayout() { 27 StringRef Layout; 28 29 if (ABI == "ilp32" || ABI == "ilp32f" || ABI == "ilp32d" || 30 ABI == "ilp32e" || 31 ABI == "il32pc64" || ABI == "il32pc64f" || ABI == "il32pc64d" || 32 ABI == "il32pc64e") { 33 if (HasCheri) 34 Layout = "e-m:e-pf200:64:64:64:32-p:32:32-i64:64-n32-S128"; 35 else 36 Layout = "e-m:e-p:32:32-i64:64-n32-S128"; 37 } else if (ABI == "lp64" || ABI == "lp64f" || ABI == "lp64d" || 38 ABI == "l64pc128" || ABI == "l64pc128f" || ABI == "l64pc128d") { 39 if (HasCheri) 40 Layout = "e-m:e-pf200:128:128:128:64-p:64:64-i64:64-i128:128-n64-S128"; 41 else 42 Layout = "e-m:e-p:64:64-i64:64-i128:128-n64-S128"; 43 } else 44 llvm_unreachable("Invalid ABI"); 45 46 StringRef PurecapOptions = ""; 47 // Only set globals address space to 200 for cap-table mode 48 if (CapabilityABI) 49 PurecapOptions = "-A200-P200-G200"; 50 51 resetDataLayout((Layout + PurecapOptions).str()); 52 } 53 54 protected: 55 std::string ABI; 56 bool HasM; 57 bool HasA; 58 bool HasF; 59 bool HasD; 60 bool HasC; 61 bool HasB; 62 bool HasCheri = false; 63 int CapSize = -1; 64 setCapabilityABITypes()65 void setCapabilityABITypes() { 66 IntPtrType = TargetInfo::SignedIntCap; 67 } 68 69 public: RISCVTargetInfo(const llvm::Triple & Triple,const TargetOptions &)70 RISCVTargetInfo(const llvm::Triple &Triple, const TargetOptions &) 71 : TargetInfo(Triple), HasM(false), HasA(false), HasF(false), 72 HasD(false), HasC(false), HasB(false) { 73 LongDoubleWidth = 128; 74 LongDoubleAlign = 128; 75 LongDoubleFormat = &llvm::APFloat::IEEEquad(); 76 SuitableAlign = 128; 77 WCharType = SignedInt; 78 WIntType = UnsignedInt; 79 } 80 getABI()81 StringRef getABI() const override { return ABI; } 82 void getTargetDefines(const LangOptions &Opts, 83 MacroBuilder &Builder) const override; 84 getTargetBuiltins()85 ArrayRef<Builtin::Info> getTargetBuiltins() const override { return None; } 86 getBuiltinVaListKind()87 BuiltinVaListKind getBuiltinVaListKind() const override { 88 return TargetInfo::VoidPtrBuiltinVaList; 89 } 90 getClobbers()91 const char *getClobbers() const override { return ""; } 92 93 ArrayRef<const char *> getGCCRegNames() const override; 94 getEHDataRegisterNumber(unsigned RegNo)95 int getEHDataRegisterNumber(unsigned RegNo) const override { 96 if (RegNo == 0) 97 return 10; 98 else if (RegNo == 1) 99 return 11; 100 else 101 return -1; 102 } 103 104 ArrayRef<TargetInfo::GCCRegAlias> getGCCRegAliases() const override; 105 106 bool validateAsmConstraint(const char *&Name, 107 TargetInfo::ConstraintInfo &Info) const override; 108 109 bool hasFeature(StringRef Feature) const override; 110 111 bool handleTargetFeatures(std::vector<std::string> &Features, 112 DiagnosticsEngine &Diags) override; 113 getIntCapWidth()114 unsigned getIntCapWidth() const override { return CapSize; } getIntCapAlign()115 unsigned getIntCapAlign() const override { return CapSize; } 116 getCHERICapabilityWidth()117 uint64_t getCHERICapabilityWidth() const override { return CapSize; } 118 getCHERICapabilityAlign()119 uint64_t getCHERICapabilityAlign() const override { return CapSize; } 120 getPointerWidthV(unsigned AddrSpace)121 uint64_t getPointerWidthV(unsigned AddrSpace) const override { 122 return (AddrSpace == 200) ? CapSize : PointerWidth; 123 } 124 getPointerRangeV(unsigned AddrSpace)125 uint64_t getPointerRangeV(unsigned AddrSpace) const override { 126 return (AddrSpace == 200) ? getPointerRangeForCHERICapability() : PointerWidth; 127 } 128 getPointerAlignV(unsigned AddrSpace)129 uint64_t getPointerAlignV(unsigned AddrSpace) const override { 130 return (AddrSpace == 200) ? CapSize : PointerAlign; 131 } 132 SupportsCapabilities()133 bool SupportsCapabilities() const override { return HasCheri; } 134 135 bool validateTarget(DiagnosticsEngine &Diags) const override; 136 hasExtIntType()137 bool hasExtIntType() const override { return true; } 138 }; 139 class LLVM_LIBRARY_VISIBILITY RISCV32TargetInfo : public RISCVTargetInfo { 140 public: RISCV32TargetInfo(const llvm::Triple & Triple,const TargetOptions & Opts)141 RISCV32TargetInfo(const llvm::Triple &Triple, const TargetOptions &Opts) 142 : RISCVTargetInfo(Triple, Opts) { 143 ABI = "ilp32"; 144 IntPtrType = SignedInt; 145 PtrDiffType = SignedInt; 146 SizeType = UnsignedInt; 147 } 148 setABI(const std::string & Name)149 bool setABI(const std::string &Name) override { 150 if (Name == "ilp32" || Name == "ilp32f" || Name == "ilp32d") { 151 ABI = Name; 152 return true; 153 } 154 if (Name == "il32pc64" || Name == "il32pc64f" || Name == "il32pc64d") { 155 setCapabilityABITypes(); 156 CapabilityABI = true; 157 ABI = Name; 158 return true; 159 } 160 return false; 161 } 162 setMaxAtomicWidth()163 void setMaxAtomicWidth() override { 164 MaxAtomicPromoteWidth = 128; 165 166 if (HasA) 167 MaxAtomicInlineWidth = 32; 168 } 169 getPointerRangeForCHERICapability()170 uint64_t getPointerRangeForCHERICapability() const override { return 32; } 171 }; 172 class LLVM_LIBRARY_VISIBILITY RISCV64TargetInfo : public RISCVTargetInfo { 173 public: RISCV64TargetInfo(const llvm::Triple & Triple,const TargetOptions & Opts)174 RISCV64TargetInfo(const llvm::Triple &Triple, const TargetOptions &Opts) 175 : RISCVTargetInfo(Triple, Opts) { 176 ABI = "lp64"; 177 LongWidth = LongAlign = PointerWidth = PointerAlign = 64; 178 IntMaxType = Int64Type = SignedLong; 179 } 180 setABI(const std::string & Name)181 bool setABI(const std::string &Name) override { 182 if (Name == "lp64" || Name == "lp64f" || Name == "lp64d") { 183 ABI = Name; 184 return true; 185 } 186 if (Name == "l64pc128" || Name == "l64pc128f" || Name == "l64pc128d") { 187 setCapabilityABITypes(); 188 CapabilityABI = true; 189 ABI = Name; 190 return true; 191 } 192 return false; 193 } 194 setMaxAtomicWidth()195 void setMaxAtomicWidth() override { 196 MaxAtomicPromoteWidth = 128; 197 198 if (HasA) 199 MaxAtomicInlineWidth = 64; 200 } 201 getPointerRangeForCHERICapability()202 uint64_t getPointerRangeForCHERICapability() const override { return 64; } 203 }; 204 } // namespace targets 205 } // namespace clang 206 207 #endif // LLVM_CLANG_LIB_BASIC_TARGETS_RISCV_H 208