Differential D101336 Diff 344635 lld/ELF/Arch/BPF.cpp

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lld/ELF/Arch/BPF.cpp

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				//===---- BPF.cpp ---------------------------------------------------------===//
				//
				// 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
				//
				//===----------------------------------------------------------------------===//

				#include "InputFiles.h"
				#include "Symbols.h"
				#include "Target.h"
				#include "llvm/Object/ELF.h"

				using namespace llvm;
				using namespace llvm::ELF;
				using namespace lld;
				using namespace lld::elf;

				namespace {
				class BPF final : public TargetInfo {
				public:
				BPF();
				void relocate(uint8_t *loc, const Relocation &rel,
				uint64_t val) const override;
				RelType getDynRel(RelType type) const override;
				RelExpr getRelExpr(RelType type, const Symbol &s,
				const uint8_t *loc) const override;
				bool emitFuncDataSections() const override;
				};
				} // namespace

				BPF::BPF() { noneRel = R_BPF_NONE; }

				void BPF::relocate(uint8_t *loc, const Relocation &rel, uint64_t val) const {
				switch (rel.type) {
				case R_BPF_NONE:
				break;
				case R_BPF_64_64:
				write64(loc, val);
				break;
				case R_BPF_64_32:
				write32(loc, val);
				break;
				default:
				llvm_unreachable("unknown relocation");
				}
				}

				RelType BPF::getDynRel(RelType type) const { return type; }
				MaskRayUnsubmitted Not Done Reply Inline Actions `R_NONE` if no dynamic relocation is expected MaskRay: `R_NONE` if no dynamic relocation is expected

				RelExpr BPF::getRelExpr(RelType type, const Symbol &s,
				const uint8_t *loc) const {
				if (type == R_BPF_NONE)
				MaskRayUnsubmitted Not Done Reply Inline Actions See other `Arch/.cpp`: add switch in getRelExpr and add `error` MaskRay:* See other `Arch/*.cpp`: add switch in getRelExpr and add `error`
				return R_NONE;
				return R_ABS;
				}

				MaskRayUnsubmitted Not Done Reply Inline Actions See other getRelExpr implementations. The allowed relocation types must be listed. MaskRay: See other getRelExpr implementations. The allowed relocation types must be listed.
				yonghong-songAuthorUnsubmitted Done Reply Inline Actions will do. yonghong-song: will do.
				bool BPF::emitFuncDataSections() const { return !config->relocatable; }

				TargetInfo *elf::getBPFTargetInfo() {
				static BPF target;
				return &target;
				}