From 28a626319e7009c068a13536ce0f825ea58a2ce2 Mon Sep 17 00:00:00 2001 From: Joerg Sonnenberger Date: Fri, 21 Nov 2014 14:42:43 +0000 Subject: [PATCH] Allow FDE references outside the +/-2GB range supported by PC relative offsets for code models other than small/medium. For JIT application, memory layout is less controlled and can result in truncations otherwise. Patch from Akos Kiss. Differential Revision: http://reviews.llvm.org/D6079 git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@222538 91177308-0d34-0410-b5e6-96231b3b80d8 --- lib/MC/MCObjectFileInfo.cpp | 11 +++++++++++ 1 file changed, 11 insertions(+) diff --git a/lib/MC/MCObjectFileInfo.cpp b/lib/MC/MCObjectFileInfo.cpp index 1b88462c8a1..1c774185f0f 100644 --- a/lib/MC/MCObjectFileInfo.cpp +++ b/lib/MC/MCObjectFileInfo.cpp @@ -273,6 +273,17 @@ void MCObjectFileInfo::InitELFMCObjectFileInfo(Triple T) { case Triple::mips64el: FDECFIEncoding = dwarf::DW_EH_PE_sdata8; break; + case Triple::x86_64: + if (RelocM == Reloc::PIC_) { + FDECFIEncoding = dwarf::DW_EH_PE_pcrel | + ((CMModel == CodeModel::Small || CMModel == CodeModel::Medium) + ? dwarf::DW_EH_PE_sdata4 : dwarf::DW_EH_PE_sdata8); + } else { + FDECFIEncoding = + (CMModel == CodeModel::Small || CMModel == CodeModel::Medium) + ? dwarf::DW_EH_PE_udata4 : dwarf::DW_EH_PE_absptr; + } + break; default: FDECFIEncoding = dwarf::DW_EH_PE_pcrel | dwarf::DW_EH_PE_sdata4; break; -- 2.34.1