From fd5c1f9497ed6d1d03839a52fae4134c8459957b Mon Sep 17 00:00:00 2001 From: Venkatraman Govindaraju Date: Wed, 29 Jan 2014 04:51:35 +0000 Subject: [Sparc] Use %r_disp32 for pc_rel entries in gcc_except_table and eh_frame. Otherwise, assembler (gas) fails to assemble them with error message "operation combines symbols in different segments". This is because MC computes pc_rel entries with subtract expression between labels from different sections. llvm-svn: 200373 --- llvm/lib/Target/Sparc/SparcTargetObjectFile.cpp | 43 +++++++++++++++++++++++++ 1 file changed, 43 insertions(+) create mode 100644 llvm/lib/Target/Sparc/SparcTargetObjectFile.cpp (limited to 'llvm/lib/Target/Sparc/SparcTargetObjectFile.cpp') diff --git a/llvm/lib/Target/Sparc/SparcTargetObjectFile.cpp b/llvm/lib/Target/Sparc/SparcTargetObjectFile.cpp new file mode 100644 index 00000000000..4913ea75fd9 --- /dev/null +++ b/llvm/lib/Target/Sparc/SparcTargetObjectFile.cpp @@ -0,0 +1,43 @@ +//===------- SparcTargetObjectFile.cpp - Sparc Object Info Impl -----------===// +// +// The LLVM Compiler Infrastructure +// +// This file is distributed under the University of Illinois Open Source +// License. See LICENSE.TXT for details. +// +//===----------------------------------------------------------------------===// + +#include "SparcTargetObjectFile.h" +#include "MCTargetDesc/SparcMCExpr.h" +#include "llvm/CodeGen/MachineModuleInfoImpls.h" +#include "llvm/Support/Dwarf.h" + +using namespace llvm; + + +const MCExpr *SparcELFTargetObjectFile:: +getTTypeGlobalReference(const GlobalValue *GV, Mangler *Mang, + MachineModuleInfo *MMI, unsigned Encoding, + MCStreamer &Streamer) const { + + if (Encoding & dwarf::DW_EH_PE_pcrel) { + MachineModuleInfoELF &ELFMMI = MMI->getObjFileInfo(); + + MCSymbol *SSym = getSymbolWithGlobalValueBase(*Mang, GV, ".DW.stub"); + + // Add information about the stub reference to ELFMMI so that the stub + // gets emitted by the asmprinter. + MachineModuleInfoImpl::StubValueTy &StubSym = ELFMMI.getGVStubEntry(SSym); + if (StubSym.getPointer() == 0) { + MCSymbol *Sym = getSymbol(*Mang, GV); + StubSym = MachineModuleInfoImpl::StubValueTy(Sym, !GV->hasLocalLinkage()); + } + + MCContext &Ctx = getContext(); + return SparcMCExpr::Create(SparcMCExpr::VK_Sparc_R_DISP32, + MCSymbolRefExpr::Create(SSym, Ctx), Ctx); + } + + return TargetLoweringObjectFileELF:: + getTTypeGlobalReference(GV, Mang, MMI, Encoding, Streamer); +} -- cgit v1.2.3