1 //===--- BPF.h - Declare BPF 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 BPF TargetInfo objects. 10 // 11 //===----------------------------------------------------------------------===// 12 13 #ifndef LLVM_CLANG_LIB_BASIC_TARGETS_BPF_H 14 #define LLVM_CLANG_LIB_BASIC_TARGETS_BPF_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 class LLVM_LIBRARY_VISIBILITY BPFTargetInfo : public TargetInfo { 25 static const Builtin::Info BuiltinInfo[]; 26 27 public: 28 BPFTargetInfo(const llvm::Triple &Triple, const TargetOptions &) 29 : TargetInfo(Triple) { 30 LongWidth = LongAlign = PointerWidth = PointerAlign = 64; 31 SizeType = UnsignedLong; 32 PtrDiffType = SignedLong; 33 IntPtrType = SignedLong; 34 IntMaxType = SignedLong; 35 Int64Type = SignedLong; 36 RegParmMax = 5; 37 if (Triple.getArch() == llvm::Triple::bpfeb) { 38 resetDataLayout("E-m:e-p:64:64-i64:64-i128:128-n32:64-S128"); 39 } else { 40 resetDataLayout("e-m:e-p:64:64-i64:64-i128:128-n32:64-S128"); 41 } 42 MaxAtomicPromoteWidth = 64; 43 MaxAtomicInlineWidth = 64; 44 TLSSupported = false; 45 } 46 47 void getTargetDefines(const LangOptions &Opts, 48 MacroBuilder &Builder) const override; 49 50 bool hasFeature(StringRef Feature) const override { 51 return Feature == "bpf" || Feature == "alu32" || Feature == "dwarfris"; 52 } 53 54 void setFeatureEnabled(llvm::StringMap<bool> &Features, StringRef Name, 55 bool Enabled) const override { 56 Features[Name] = Enabled; 57 } 58 59 ArrayRef<Builtin::Info> getTargetBuiltins() const override; 60 61 const char *getClobbers() const override { return ""; } 62 63 BuiltinVaListKind getBuiltinVaListKind() const override { 64 return TargetInfo::VoidPtrBuiltinVaList; 65 } 66 67 bool isValidGCCRegisterName(StringRef Name) const override { return true; } 68 ArrayRef<const char *> getGCCRegNames() const override { return None; } 69 70 bool validateAsmConstraint(const char *&Name, 71 TargetInfo::ConstraintInfo &info) const override { 72 return true; 73 } 74 75 ArrayRef<TargetInfo::GCCRegAlias> getGCCRegAliases() const override { 76 return None; 77 } 78 79 bool allowDebugInfoForExternalVar() const override { return true; } 80 81 CallingConvCheckResult checkCallingConvention(CallingConv CC) const override { 82 switch (CC) { 83 default: 84 return CCCR_Warning; 85 case CC_C: 86 case CC_OpenCLKernel: 87 return CCCR_OK; 88 } 89 } 90 91 bool isValidCPUName(StringRef Name) const override; 92 93 void fillValidCPUList(SmallVectorImpl<StringRef> &Values) const override; 94 95 bool setCPU(const std::string &Name) override { 96 StringRef CPUName(Name); 97 return isValidCPUName(CPUName); 98 } 99 }; 100 } // namespace targets 101 } // namespace clang 102 #endif // LLVM_CLANG_LIB_BASIC_TARGETS_BPF_H 103