diff options
Diffstat (limited to 'contrib/llvm/lib/Target/PowerPC/PPCAsmPrinter.cpp')
| -rw-r--r-- | contrib/llvm/lib/Target/PowerPC/PPCAsmPrinter.cpp | 128 |
1 files changed, 71 insertions, 57 deletions
diff --git a/contrib/llvm/lib/Target/PowerPC/PPCAsmPrinter.cpp b/contrib/llvm/lib/Target/PowerPC/PPCAsmPrinter.cpp index 199a0de..4444466 100644 --- a/contrib/llvm/lib/Target/PowerPC/PPCAsmPrinter.cpp +++ b/contrib/llvm/lib/Target/PowerPC/PPCAsmPrinter.cpp @@ -363,71 +363,85 @@ void PPCAsmPrinter::LowerPATCHPOINT(MCStreamer &OutStreamer, StackMaps &SM, SM.recordPatchPoint(MI); PatchPointOpers Opers(&MI); - int64_t CallTarget = Opers.getMetaOper(PatchPointOpers::TargetPos).getImm(); unsigned EncodedBytes = 0; - if (CallTarget) { - assert((CallTarget & 0xFFFFFFFFFFFF) == CallTarget && - "High 16 bits of call target should be zero."); - unsigned ScratchReg = MI.getOperand(Opers.getNextScratchIdx()).getReg(); - 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) + const MachineOperand &CalleeMO = + Opers.getMetaOper(PatchPointOpers::TargetPos); + + if (CalleeMO.isImm()) { + int64_t CallTarget = Opers.getMetaOper(PatchPointOpers::TargetPos).getImm(); + if (CallTarget) { + assert((CallTarget & 0xFFFFFFFFFFFF) == CallTarget && + "High 16 bits of call target should be zero."); + unsigned ScratchReg = MI.getOperand(Opers.getNextScratchIdx()).getReg(); + 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(8) + .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(ScratchReg) - .addImm(0) - .addReg(ScratchReg)); + .addReg(PPC::X2) + .addImm(TOCSaveOffset) + .addReg(PPC::X1)); ++EncodedBytes; } + } else if (CalleeMO.isGlobal()) { + const GlobalValue *GValue = CalleeMO.getGlobal(); + MCSymbol *MOSymbol = getSymbol(GValue); + const MCExpr *SymVar = MCSymbolRefExpr::create(MOSymbol, OutContext); - 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; + EmitToStreamer(OutStreamer, MCInstBuilder(PPC::BL8_NOP) + .addExpr(SymVar)); + EncodedBytes += 2; } // Each instruction is 4 bytes. |
