4c81bb7e3f
At present each TargetRelocationHandler generates a pretty similar error string and calls llvm_unreachable() when encountering an unknown relocation. This is not ideal for two reasons: 1. llvm_unreachable disappears in release builds but we still want to know if we encountered a relocation we couldn't handle in release builds. 2. Duplication is bad - there is no need to have a per-architecture error message. This change adds a test for AArch64 to test whether or not the error message actually works. The other architectures have not been tested but they compile and check-lld passes. llvm-svn: 223782
62 lines
2.2 KiB
C++
62 lines
2.2 KiB
C++
//===- lib/ReaderWriter/ELF/Mips/MipsTargetHandler.cpp --------------------===//
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//
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// The LLVM Linker
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//
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// This file is distributed under the University of Illinois Open Source
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// License. See LICENSE.TXT for details.
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//
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//===----------------------------------------------------------------------===//
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#include "ELFFile.h"
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#include "MipsDynamicLibraryWriter.h"
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#include "MipsExecutableWriter.h"
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#include "MipsLinkingContext.h"
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#include "MipsTargetHandler.h"
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using namespace lld;
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using namespace elf;
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typedef llvm::object::ELFType<llvm::support::little, 2, false> Mips32ElELFType;
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MipsTargetHandler::MipsTargetHandler(MipsLinkingContext &ctx)
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: DefaultTargetHandler(ctx), _ctx(ctx),
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_runtimeFile(new MipsRuntimeFile<Mips32ElELFType>(ctx)),
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_targetLayout(new MipsTargetLayout<Mips32ElELFType>(ctx)),
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_relocationHandler(new MipsTargetRelocationHandler(*_targetLayout, ctx)) {}
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std::unique_ptr<Writer> MipsTargetHandler::getWriter() {
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switch (_ctx.getOutputELFType()) {
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case llvm::ELF::ET_EXEC:
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return std::unique_ptr<Writer>(new MipsExecutableWriter<Mips32ElELFType>(
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_ctx, *_targetLayout, _elfFlagsMerger));
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case llvm::ELF::ET_DYN:
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return std::unique_ptr<Writer>(
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new MipsDynamicLibraryWriter<Mips32ElELFType>(_ctx, *_targetLayout,
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_elfFlagsMerger));
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case llvm::ELF::ET_REL:
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llvm_unreachable("TODO: support -r mode");
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default:
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llvm_unreachable("unsupported output type");
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}
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}
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void MipsTargetHandler::registerRelocationNames(Registry ®istry) {
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registry.addKindTable(Reference::KindNamespace::ELF,
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Reference::KindArch::Mips, kindStrings);
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}
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#define ELF_RELOC(name, value) LLD_KIND_STRING_ENTRY(name),
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const Registry::KindStrings MipsTargetHandler::kindStrings[] = {
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#include "llvm/Support/ELFRelocs/Mips.def"
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LLD_KIND_STRING_ENTRY(LLD_R_MIPS_GLOBAL_GOT),
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LLD_KIND_STRING_ENTRY(LLD_R_MIPS_32_HI16),
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LLD_KIND_STRING_ENTRY(LLD_R_MIPS_GLOBAL_26),
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LLD_KIND_STRING_ENTRY(LLD_R_MIPS_HI16),
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LLD_KIND_STRING_ENTRY(LLD_R_MIPS_LO16),
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LLD_KIND_STRING_ENTRY(LLD_R_MIPS_STO_PLT),
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LLD_KIND_STRING_END
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};
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#undef ELF_RELOC
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