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Linux kernel recently added support for kernel modules https://lore.kernel.org/bpf/20201110011932.3201430-5-andrii@kernel.org/ In such cases, a type id in the kernel needs to be presented as (btf id for modules, btf type id for this module). Change __builtin_btf_type_id() to return 64bit value so libbpf can do the above encoding. Differential Revision: https://reviews.llvm.org/D91489
38 lines
2.0 KiB
TableGen
38 lines
2.0 KiB
TableGen
//===- IntrinsicsBPF.td - Defines BPF intrinsics -----------*- tablegen -*-===//
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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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//
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// This file defines all of the BPF-specific intrinsics.
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//
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//===----------------------------------------------------------------------===//
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// Specialized loads from packet
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let TargetPrefix = "bpf" in { // All intrinsics start with "llvm.bpf."
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def int_bpf_load_byte : GCCBuiltin<"__builtin_bpf_load_byte">,
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Intrinsic<[llvm_i64_ty], [llvm_ptr_ty, llvm_i64_ty], [IntrReadMem]>;
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def int_bpf_load_half : GCCBuiltin<"__builtin_bpf_load_half">,
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Intrinsic<[llvm_i64_ty], [llvm_ptr_ty, llvm_i64_ty], [IntrReadMem]>;
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def int_bpf_load_word : GCCBuiltin<"__builtin_bpf_load_word">,
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Intrinsic<[llvm_i64_ty], [llvm_ptr_ty, llvm_i64_ty], [IntrReadMem]>;
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def int_bpf_pseudo : GCCBuiltin<"__builtin_bpf_pseudo">,
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Intrinsic<[llvm_i64_ty], [llvm_i64_ty, llvm_i64_ty]>;
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def int_bpf_preserve_field_info : GCCBuiltin<"__builtin_bpf_preserve_field_info">,
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Intrinsic<[llvm_i32_ty], [llvm_anyptr_ty, llvm_i64_ty],
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[IntrNoMem, ImmArg<ArgIndex<1>>]>;
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def int_bpf_btf_type_id : GCCBuiltin<"__builtin_bpf_btf_type_id">,
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Intrinsic<[llvm_i64_ty], [llvm_i32_ty, llvm_i64_ty],
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[IntrNoMem]>;
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def int_bpf_preserve_type_info : GCCBuiltin<"__builtin_bpf_preserve_type_info">,
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Intrinsic<[llvm_i32_ty], [llvm_i32_ty, llvm_i64_ty],
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[IntrNoMem]>;
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def int_bpf_preserve_enum_value : GCCBuiltin<"__builtin_bpf_preserve_enum_value">,
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Intrinsic<[llvm_i64_ty], [llvm_i32_ty, llvm_ptr_ty, llvm_i64_ty],
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[IntrNoMem]>;
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def int_bpf_passthrough : GCCBuiltin<"__builtin_bpf_passthrough">,
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Intrinsic<[llvm_any_ty], [llvm_i32_ty, llvm_any_ty], [IntrNoMem]>;
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}
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