diff options
| author | Adhemerval Zanella <azanella@linux.vnet.ibm.com> | 2012-10-25 12:27:42 +0000 |
|---|---|---|
| committer | Adhemerval Zanella <azanella@linux.vnet.ibm.com> | 2012-10-25 12:27:42 +0000 |
| commit | aa71428378c1cb491ca60041d8ba7aa110bc963d (patch) | |
| tree | 908897b170bef9bf01d423f2c18bca9ec90be162 /lib/Target/PowerPC/PPCAsmPrinter.cpp | |
| parent | c0cd72204d35bedbd2a36b240d9e5e95647fd2d2 (diff) | |
Initial TOC support for PowerPC64 object creation
This patch adds initial PPC64 TOC MC object creation using the small mcmodel
(a single 64K TOC) adding the some TOC relocations (R_PPC64_TOC,
R_PPC64_TOC16, and R_PPC64_TOC16DS).
The addition of 'undefinedExplicitRelSym' hook on 'MCELFObjectTargetWriter'
is meant to avoid the creation of an unreferenced ".TOC." symbol (used in
the .odp creation) as well to set the R_PPC64_TOC relocation target as the
temporary ".TOC." symbol. On PPC64 ABI, the R_PPC64_TOC relocation should
not point to any symbol.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@166677 91177308-0d34-0410-b5e6-96231b3b80d8
Diffstat (limited to 'lib/Target/PowerPC/PPCAsmPrinter.cpp')
| -rw-r--r-- | lib/Target/PowerPC/PPCAsmPrinter.cpp | 8 |
1 files changed, 6 insertions, 2 deletions
diff --git a/lib/Target/PowerPC/PPCAsmPrinter.cpp b/lib/Target/PowerPC/PPCAsmPrinter.cpp index d8abd9fba0..6941413ed4 100644 --- a/lib/Target/PowerPC/PPCAsmPrinter.cpp +++ b/lib/Target/PowerPC/PPCAsmPrinter.cpp @@ -420,10 +420,14 @@ void PPCLinuxAsmPrinter::EmitFunctionEntryLabel() { OutStreamer.EmitValueToAlignment(8); MCSymbol *Symbol1 = OutContext.GetOrCreateSymbol(".L." + Twine(CurrentFnSym->getName())); - MCSymbol *Symbol2 = OutContext.GetOrCreateSymbol(StringRef(".TOC.@tocbase")); + // Generates a R_PPC64_ADDR64 (from FK_DATA_8) relocation for the function + // entry point. OutStreamer.EmitValue(MCSymbolRefExpr::Create(Symbol1, OutContext), 8/*size*/, 0/*addrspace*/); - OutStreamer.EmitValue(MCSymbolRefExpr::Create(Symbol2, OutContext), + MCSymbol *Symbol2 = OutContext.GetOrCreateSymbol(StringRef(".TOC.")); + // Generates a R_PPC64_TOC relocation for TOC base insertion. + OutStreamer.EmitValue(MCSymbolRefExpr::Create(Symbol2, + MCSymbolRefExpr::VK_PPC_TOC, OutContext), 8/*size*/, 0/*addrspace*/); // Emit a null environment pointer. OutStreamer.EmitIntValue(0, 8 /* size */, 0 /* addrspace */); |