diff options
Diffstat (limited to 'contrib/llvm/lib/Target/PowerPC/PPCAsmPrinter.cpp')
| -rw-r--r-- | contrib/llvm/lib/Target/PowerPC/PPCAsmPrinter.cpp | 50 |
1 files changed, 46 insertions, 4 deletions
diff --git a/contrib/llvm/lib/Target/PowerPC/PPCAsmPrinter.cpp b/contrib/llvm/lib/Target/PowerPC/PPCAsmPrinter.cpp index 87a5236..199a0de 100644 --- a/contrib/llvm/lib/Target/PowerPC/PPCAsmPrinter.cpp +++ b/contrib/llvm/lib/Target/PowerPC/PPCAsmPrinter.cpp @@ -197,7 +197,7 @@ void PPCAsmPrinter::printOperand(const MachineInstr *MI, unsigned OpNo, // External or weakly linked global variables need non-lazily-resolved stubs if (TM.getRelocationModel() != Reloc::Static && - (GV->isDeclaration() || GV->isWeakForLinker())) { + !GV->isStrongDefinitionForLinker()) { if (!GV->hasHiddenVisibility()) { SymToPrint = getSymbolWithGlobalValueBase(GV, "$non_lazy_ptr"); MachineModuleInfoImpl::StubValueTy &StubSym = @@ -369,28 +369,70 @@ void PPCAsmPrinter::LowerPATCHPOINT(MCStreamer &OutStreamer, StackMaps &SM, assert((CallTarget & 0xFFFFFFFFFFFF) == CallTarget && "High 16 bits of call target should be zero."); unsigned ScratchReg = MI.getOperand(Opers.getNextScratchIdx()).getReg(); - EncodedBytes = 6*4; + EncodedBytes = 0; // Materialize the jump address: EmitToStreamer(OutStreamer, MCInstBuilder(PPC::LI8) .addReg(ScratchReg) .addImm((CallTarget >> 32) & 0xFFFF)); + ++EncodedBytes; EmitToStreamer(OutStreamer, MCInstBuilder(PPC::RLDIC) .addReg(ScratchReg) .addReg(ScratchReg) .addImm(32).addImm(16)); + ++EncodedBytes; EmitToStreamer(OutStreamer, MCInstBuilder(PPC::ORIS8) .addReg(ScratchReg) .addReg(ScratchReg) .addImm((CallTarget >> 16) & 0xFFFF)); + ++EncodedBytes; EmitToStreamer(OutStreamer, MCInstBuilder(PPC::ORI8) .addReg(ScratchReg) .addReg(ScratchReg) .addImm(CallTarget & 0xFFFF)); + // Save the current TOC pointer before the remote call. + int TOCSaveOffset = Subtarget->isELFv2ABI() ? 24 : 40; + EmitToStreamer(OutStreamer, MCInstBuilder(PPC::STD) + .addReg(PPC::X2) + .addImm(TOCSaveOffset) + .addReg(PPC::X1)); + ++EncodedBytes; + + + // If we're on ELFv1, then we need to load the actual function pointer from + // the function descriptor. + if (!Subtarget->isELFv2ABI()) { + // Load the new TOC pointer and the function address, but not r11 + // (needing this is rare, and loading it here would prevent passing it + // via a 'nest' parameter. + EmitToStreamer(OutStreamer, MCInstBuilder(PPC::LD) + .addReg(PPC::X2) + .addImm(8) + .addReg(ScratchReg)); + ++EncodedBytes; + EmitToStreamer(OutStreamer, MCInstBuilder(PPC::LD) + .addReg(ScratchReg) + .addImm(0) + .addReg(ScratchReg)); + ++EncodedBytes; + } + EmitToStreamer(OutStreamer, MCInstBuilder(PPC::MTCTR8).addReg(ScratchReg)); + ++EncodedBytes; EmitToStreamer(OutStreamer, MCInstBuilder(PPC::BCTRL8)); + ++EncodedBytes; + + // Restore the TOC pointer after the call. + EmitToStreamer(OutStreamer, MCInstBuilder(PPC::LD) + .addReg(PPC::X2) + .addImm(TOCSaveOffset) + .addReg(PPC::X1)); + ++EncodedBytes; } + // Each instruction is 4 bytes. + EncodedBytes *= 4; + // Emit padding. unsigned NumBytes = Opers.getMetaOper(PatchPointOpers::NBytesPos).getImm(); assert(NumBytes >= EncodedBytes && @@ -624,7 +666,7 @@ void PPCAsmPrinter::EmitInstruction(const MachineInstr *MI) { IsExternal = GV->isDeclaration(); IsCommon = GV->hasCommonLinkage(); IsNonLocalFunction = GV->getType()->getElementType()->isFunctionTy() && - (GV->isDeclaration() || GV->isWeakForLinker()); + !GV->isStrongDefinitionForLinker(); IsAvailExt = GV->hasAvailableExternallyLinkage(); } else if (MO.isCPI()) MOSymbol = GetCPISymbol(MO.getIndex()); @@ -706,7 +748,7 @@ void PPCAsmPrinter::EmitInstruction(const MachineInstr *MI) { MOSymbol = getSymbol(GV); IsExternal = GV->isDeclaration(); IsNonLocalFunction = GV->getType()->getElementType()->isFunctionTy() && - (GV->isDeclaration() || GV->isWeakForLinker()); + !GV->isStrongDefinitionForLinker(); } else if (MO.isCPI()) MOSymbol = GetCPISymbol(MO.getIndex()); |
