77 lines
1.9 KiB
C
77 lines
1.9 KiB
C
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//===- BPFCORE.h - Common info for Compile-Once Run-EveryWhere -*- C++ -*-===//
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//
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// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
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// See https://llvm.org/LICENSE.txt for license information.
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// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
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//
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//===----------------------------------------------------------------------===//
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#ifndef LLVM_LIB_TARGET_BPF_BPFCORE_H
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#define LLVM_LIB_TARGET_BPF_BPFCORE_H
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#include "llvm/ADT/StringRef.h"
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namespace llvm {
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class BasicBlock;
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class Instruction;
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class Module;
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class BPFCoreSharedInfo {
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public:
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enum PatchableRelocKind : uint32_t {
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FIELD_BYTE_OFFSET = 0,
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FIELD_BYTE_SIZE,
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FIELD_EXISTENCE,
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FIELD_SIGNEDNESS,
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FIELD_LSHIFT_U64,
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FIELD_RSHIFT_U64,
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BTF_TYPE_ID_LOCAL,
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BTF_TYPE_ID_REMOTE,
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TYPE_EXISTENCE,
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TYPE_SIZE,
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ENUM_VALUE_EXISTENCE,
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ENUM_VALUE,
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MAX_FIELD_RELOC_KIND,
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};
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enum BTFTypeIdFlag : uint32_t {
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BTF_TYPE_ID_LOCAL_RELOC = 0,
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BTF_TYPE_ID_REMOTE_RELOC,
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MAX_BTF_TYPE_ID_FLAG,
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};
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enum PreserveTypeInfo : uint32_t {
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PRESERVE_TYPE_INFO_EXISTENCE = 0,
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PRESERVE_TYPE_INFO_SIZE,
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MAX_PRESERVE_TYPE_INFO_FLAG,
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};
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enum PreserveEnumValue : uint32_t {
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PRESERVE_ENUM_VALUE_EXISTENCE = 0,
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PRESERVE_ENUM_VALUE,
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MAX_PRESERVE_ENUM_VALUE_FLAG,
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};
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/// The attribute attached to globals representing a field access
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static constexpr StringRef AmaAttr = "btf_ama";
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/// The attribute attached to globals representing a type id
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static constexpr StringRef TypeIdAttr = "btf_type_id";
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/// llvm.bpf.passthrough builtin seq number
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static uint32_t SeqNum;
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/// Insert a bpf passthrough builtin function.
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static Instruction *insertPassThrough(Module *M, BasicBlock *BB,
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Instruction *Input,
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Instruction *Before);
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};
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} // namespace llvm
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#endif
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