1 //===--- BPF.cpp - Implement BPF target feature support -------------------===// 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 implements BPF TargetInfo objects. 10 // 11 //===----------------------------------------------------------------------===// 12 13 #include "BPF.h" 14 #include "Targets.h" 15 #include "clang/Basic/MacroBuilder.h" 16 #include "clang/Basic/TargetBuiltins.h" 17 #include "llvm/ADT/StringRef.h" 18 19 using namespace clang; 20 using namespace clang::targets; 21 22 static constexpr Builtin::Info BuiltinInfo[] = { 23 #define BUILTIN(ID, TYPE, ATTRS) \ 24 {#ID, TYPE, ATTRS, nullptr, HeaderDesc::NO_HEADER, ALL_LANGUAGES}, 25 #include "clang/Basic/BuiltinsBPF.def" 26 }; 27 28 void BPFTargetInfo::getTargetDefines(const LangOptions &Opts, 29 MacroBuilder &Builder) const { 30 Builder.defineMacro("__bpf__"); 31 Builder.defineMacro("__BPF__"); 32 } 33 34 static constexpr llvm::StringLiteral ValidCPUNames[] = {"generic", "v1", "v2", 35 "v3", "probe"}; 36 37 bool BPFTargetInfo::isValidCPUName(StringRef Name) const { 38 return llvm::is_contained(ValidCPUNames, Name); 39 } 40 41 void BPFTargetInfo::fillValidCPUList(SmallVectorImpl<StringRef> &Values) const { 42 Values.append(std::begin(ValidCPUNames), std::end(ValidCPUNames)); 43 } 44 45 ArrayRef<Builtin::Info> BPFTargetInfo::getTargetBuiltins() const { 46 return llvm::ArrayRef(BuiltinInfo, 47 clang::BPF::LastTSBuiltin - Builtin::FirstTSBuiltin); 48 } 49 50 bool BPFTargetInfo::handleTargetFeatures(std::vector<std::string> &Features, 51 DiagnosticsEngine &Diags) { 52 for (const auto &Feature : Features) { 53 if (Feature == "+alu32") { 54 HasAlu32 = true; 55 } 56 } 57 58 return true; 59 } 60