PowerPC: Fix eh_frame relocation for PIC
This patch fixes the PPC eh_frame definitions for the personality and
frame unwinding for PIC objects. It makes PIC build correctly creates
relative relocations in the '.rela.eh_frame' segments and thus avoiding
a text relocation that generates a DT_TEXTREL segments in link phase.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@171506 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/lib/MC/MCObjectFileInfo.cpp b/lib/MC/MCObjectFileInfo.cpp
index d73b9b1..a46f7be 100644
--- a/lib/MC/MCObjectFileInfo.cpp
+++ b/lib/MC/MCObjectFileInfo.cpp
@@ -256,6 +256,17 @@
TTypeEncoding = (CMModel == CodeModel::Small)
? dwarf::DW_EH_PE_udata4 : dwarf::DW_EH_PE_absptr;
}
+ } else if (T.getArch() == Triple::ppc64) {
+ PersonalityEncoding = dwarf::DW_EH_PE_udata8;
+ PersonalityEncoding |= (RelocM == Reloc::PIC_)
+ ? dwarf::DW_EH_PE_indirect | dwarf::DW_EH_PE_pcrel
+ : dwarf::DW_EH_PE_absptr;
+ unsigned PICFlag = (RelocM == Reloc::PIC_) ? dwarf::DW_EH_PE_pcrel
+ : dwarf::DW_EH_PE_absptr;
+ FDECFIEncoding = PICFlag | dwarf::DW_EH_PE_sdata4;
+ LSDAEncoding = PICFlag | dwarf::DW_EH_PE_udata8;
+ FDEEncoding = PICFlag | dwarf::DW_EH_PE_sdata4;
+ TTypeEncoding = PICFlag | dwarf::DW_EH_PE_sdata4;
}
// Solaris requires different flags for .eh_frame to seemingly every other