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3e85a68388
Local symbols in the indirect symbol table contain the value `INDIRECT_SYMBOL_LOCAL` and the corresponding __pointers entry must contain the address of the target. In r349060, I added support for local symbols in the indirect symbol table, which was checking if the symbol `isDefined` && `!isExternal` to determine if the symbol is local or not. It turns out that `isDefined` will return false if the user of the symbol comes before its definition, and we'll again generate .long 0 which will be the symbol at the adress 0x0. Instead of doing that, use GlobalValue::hasLocalLinkage() to check if the symbol is local. Differential Revision: https://reviews.llvm.org/D66563 git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@369671 91177308-0d34-0410-b5e6-96231b3b80d8
77 lines
3.1 KiB
C++
77 lines
3.1 KiB
C++
//===-- X86TargetObjectFile.h - X86 Object Info -----------------*- 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_X86_X86TARGETOBJECTFILE_H
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#define LLVM_LIB_TARGET_X86_X86TARGETOBJECTFILE_H
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#include "llvm/CodeGen/TargetLoweringObjectFileImpl.h"
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#include "llvm/Target/TargetLoweringObjectFile.h"
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namespace llvm {
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/// X86_64MachoTargetObjectFile - This TLOF implementation is used for Darwin
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/// x86-64.
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class X86_64MachoTargetObjectFile : public TargetLoweringObjectFileMachO {
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public:
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const MCExpr *getTTypeGlobalReference(const GlobalValue *GV,
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unsigned Encoding,
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const TargetMachine &TM,
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MachineModuleInfo *MMI,
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MCStreamer &Streamer) const override;
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// getCFIPersonalitySymbol - The symbol that gets passed to
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// .cfi_personality.
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MCSymbol *getCFIPersonalitySymbol(const GlobalValue *GV,
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const TargetMachine &TM,
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MachineModuleInfo *MMI) const override;
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const MCExpr *getIndirectSymViaGOTPCRel(const GlobalValue *GV,
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const MCSymbol *Sym,
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const MCValue &MV, int64_t Offset,
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MachineModuleInfo *MMI,
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MCStreamer &Streamer) const override;
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};
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/// This implemenatation is used for X86 ELF targets that don't
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/// have a further specialization.
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class X86ELFTargetObjectFile : public TargetLoweringObjectFileELF {
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public:
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X86ELFTargetObjectFile() {
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PLTRelativeVariantKind = MCSymbolRefExpr::VK_PLT;
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}
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/// Describe a TLS variable address within debug info.
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const MCExpr *getDebugThreadLocalSymbol(const MCSymbol *Sym) const override;
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};
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/// X86FreeBSDTargetObjectFile - This implementation is used for FreeBSD
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/// on x86 and x86-64.
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class X86FreeBSDTargetObjectFile : public X86ELFTargetObjectFile {
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void Initialize(MCContext &Ctx, const TargetMachine &TM) override;
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};
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/// This implementation is used for Fuchsia on x86-64.
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class X86FuchsiaTargetObjectFile : public X86ELFTargetObjectFile {
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void Initialize(MCContext &Ctx, const TargetMachine &TM) override;
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};
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/// X86LinuxNaClTargetObjectFile - This implementation is used for linux and
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/// Native Client on x86 and x86-64.
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class X86LinuxNaClTargetObjectFile : public X86ELFTargetObjectFile {
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void Initialize(MCContext &Ctx, const TargetMachine &TM) override;
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};
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/// This implementation is used for Solaris on x86/x86-64.
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class X86SolarisTargetObjectFile : public X86ELFTargetObjectFile {
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void Initialize(MCContext &Ctx, const TargetMachine &TM) override;
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};
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} // end namespace llvm
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#endif
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