forked from OSchip/llvm-project
82 lines
2.3 KiB
C++
82 lines
2.3 KiB
C++
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//===- lib/ReaderWriter/ELF/ELFTargetInfo.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 "lld/ReaderWriter/ELFTargetInfo.h"
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#include "lld/Core/LinkerOptions.h"
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#include "llvm/ADT/Triple.h"
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#include "llvm/Support/ELF.h"
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namespace lld {
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uint16_t ELFTargetInfo::getOutputType() const {
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switch (_options._outputKind) {
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case OutputKind::Executable:
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return llvm::ELF::ET_EXEC;
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case OutputKind::Relocatable:
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return llvm::ELF::ET_REL;
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case OutputKind::Shared:
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return llvm::ELF::ET_DYN;
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}
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llvm_unreachable("Unhandled OutputKind");
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}
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uint16_t ELFTargetInfo::getOutputMachine() const {
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switch (getTriple().getArch()) {
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case llvm::Triple::x86:
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return llvm::ELF::EM_386;
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case llvm::Triple::x86_64:
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return llvm::ELF::EM_X86_64;
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case llvm::Triple::hexagon:
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return llvm::ELF::EM_HEXAGON;
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case llvm::Triple::ppc:
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return llvm::ELF::EM_PPC;
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default:
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llvm_unreachable("Unhandled arch");
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}
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}
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class X86ELFTargetInfo final : public ELFTargetInfo {
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public:
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X86ELFTargetInfo(const LinkerOptions &lo) : ELFTargetInfo(lo) {}
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virtual uint64_t getPageSize() const { return 0x1000; }
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};
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class HexagonELFTargetInfo final : public ELFTargetInfo {
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public:
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HexagonELFTargetInfo(const LinkerOptions &lo) : ELFTargetInfo(lo) {}
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virtual uint64_t getPageSize() const { return 0x1000; }
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};
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class PPCELFTargetInfo final : public ELFTargetInfo {
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public:
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PPCELFTargetInfo(const LinkerOptions &lo) : ELFTargetInfo(lo) {}
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virtual bool isLittleEndian() const { return false; }
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virtual uint64_t getPageSize() const { return 0x1000; }
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};
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std::unique_ptr<ELFTargetInfo> ELFTargetInfo::create(const LinkerOptions &lo) {
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switch (llvm::Triple(llvm::Triple::normalize(lo._target)).getArch()) {
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case llvm::Triple::x86:
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case llvm::Triple::x86_64:
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return std::unique_ptr<ELFTargetInfo>(new X86ELFTargetInfo(lo));
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case llvm::Triple::hexagon:
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return std::unique_ptr<ELFTargetInfo>(new HexagonELFTargetInfo(lo));
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case llvm::Triple::ppc:
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return std::unique_ptr<ELFTargetInfo>(new PPCELFTargetInfo(lo));
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default:
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return std::unique_ptr<ELFTargetInfo>();
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}
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}
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} // end namespace lld
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