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//===--- BPF.h - Declare BPF target feature support -------------*- C++ -*-===//
//
// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
// See https://llvm.org/LICENSE.txt for license information.
// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
//
//===----------------------------------------------------------------------===//
//
// This file declares BPF TargetInfo objects.
//
//===----------------------------------------------------------------------===//
#ifndef LLVM_CLANG_LIB_BASIC_TARGETS_BPF_H
#define LLVM_CLANG_LIB_BASIC_TARGETS_BPF_H
#include "clang/Basic/TargetInfo.h"
#include "clang/Basic/TargetOptions.h"
#include "llvm/ADT/Triple.h"
#include "llvm/Support/Compiler.h"
namespace clang {
namespace targets {
class LLVM_LIBRARY_VISIBILITY BPFTargetInfo : public TargetInfo {
static const Builtin::Info BuiltinInfo[];
bool HasAlu32 = false;
public:
BPFTargetInfo(const llvm::Triple &Triple, const TargetOptions &)
: TargetInfo(Triple) {
LongWidth = LongAlign = PointerWidth = PointerAlign = 64;
SizeType = UnsignedLong;
PtrDiffType = SignedLong;
IntPtrType = SignedLong;
IntMaxType = SignedLong;
Int64Type = SignedLong;
RegParmMax = 5;
if (Triple.getArch() == llvm::Triple::bpfeb) {
resetDataLayout("E-m:e-p:64:64-i64:64-i128:128-n32:64-S128");
} else {
resetDataLayout("e-m:e-p:64:64-i64:64-i128:128-n32:64-S128");
}
MaxAtomicPromoteWidth = 64;
MaxAtomicInlineWidth = 64;
TLSSupported = false;
}
void getTargetDefines(const LangOptions &Opts,
MacroBuilder &Builder) const override;
bool hasFeature(StringRef Feature) const override {
return Feature == "bpf" || Feature == "alu32" || Feature == "dwarfris";
}
void setFeatureEnabled(llvm::StringMap<bool> &Features, StringRef Name,
bool Enabled) const override {
Features[Name] = Enabled;
}
bool handleTargetFeatures(std::vector<std::string> &Features,
DiagnosticsEngine &Diags) override;
ArrayRef<Builtin::Info> getTargetBuiltins() const override;
const char *getClobbers() const override { return ""; }
BuiltinVaListKind getBuiltinVaListKind() const override {
return TargetInfo::VoidPtrBuiltinVaList;
}
bool isValidGCCRegisterName(StringRef Name) const override { return true; }
ArrayRef<const char *> getGCCRegNames() const override { return None; }
bool validateAsmConstraint(const char *&Name,
TargetInfo::ConstraintInfo &Info) const override {
switch (*Name) {
default:
break;
case 'w':
if (HasAlu32) {
Info.setAllowsRegister();
}
break;
}
return true;
}
ArrayRef<TargetInfo::GCCRegAlias> getGCCRegAliases() const override {
return None;
}
bool allowDebugInfoForExternalRef() const override { return true; }
CallingConvCheckResult checkCallingConvention(CallingConv CC) const override {
switch (CC) {
default:
return CCCR_Warning;
case CC_C:
case CC_OpenCLKernel:
return CCCR_OK;
}
}
bool isValidCPUName(StringRef Name) const override;
void fillValidCPUList(SmallVectorImpl<StringRef> &Values) const override;
bool setCPU(const std::string &Name) override {
if (Name == "v3") {
HasAlu32 = true;
}
StringRef CPUName(Name);
return isValidCPUName(CPUName);
}
};
} // namespace targets
} // namespace clang
#endif // LLVM_CLANG_LIB_BASIC_TARGETS_BPF_H
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