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//===- BPFCORE.h - Common info for Compile-Once Run-EveryWhere -*- 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
//
//===----------------------------------------------------------------------===//
#ifndef LLVM_LIB_TARGET_BPF_BPFCORE_H
#define LLVM_LIB_TARGET_BPF_BPFCORE_H
#include "llvm/ADT/StringRef.h"
namespace llvm {
class BasicBlock;
class Instruction;
class Module;
class BPFCoreSharedInfo {
public:
enum PatchableRelocKind : uint32_t {
FIELD_BYTE_OFFSET = 0,
FIELD_BYTE_SIZE,
FIELD_EXISTENCE,
FIELD_SIGNEDNESS,
FIELD_LSHIFT_U64,
FIELD_RSHIFT_U64,
BTF_TYPE_ID_LOCAL,
BTF_TYPE_ID_REMOTE,
TYPE_EXISTENCE,
TYPE_SIZE,
ENUM_VALUE_EXISTENCE,
ENUM_VALUE,
TYPE_MATCH,
MAX_FIELD_RELOC_KIND,
};
enum BTFTypeIdFlag : uint32_t {
BTF_TYPE_ID_LOCAL_RELOC = 0,
BTF_TYPE_ID_REMOTE_RELOC,
MAX_BTF_TYPE_ID_FLAG,
};
enum PreserveTypeInfo : uint32_t {
PRESERVE_TYPE_INFO_EXISTENCE = 0,
PRESERVE_TYPE_INFO_SIZE,
PRESERVE_TYPE_INFO_MATCH,
MAX_PRESERVE_TYPE_INFO_FLAG,
};
enum PreserveEnumValue : uint32_t {
PRESERVE_ENUM_VALUE_EXISTENCE = 0,
PRESERVE_ENUM_VALUE,
MAX_PRESERVE_ENUM_VALUE_FLAG,
};
/// The attribute attached to globals representing a field access
static constexpr StringRef AmaAttr = "btf_ama";
/// The attribute attached to globals representing a type id
static constexpr StringRef TypeIdAttr = "btf_type_id";
/// llvm.bpf.passthrough builtin seq number
static uint32_t SeqNum;
/// Insert a bpf passthrough builtin function.
static Instruction *insertPassThrough(Module *M, BasicBlock *BB,
Instruction *Input,
Instruction *Before);
};
} // namespace llvm
#endif
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