diff options
Diffstat (limited to 'lib/Target/Mips/MipsISelLowering.cpp')
| -rw-r--r-- | lib/Target/Mips/MipsISelLowering.cpp | 58 |
1 files changed, 58 insertions, 0 deletions
diff --git a/lib/Target/Mips/MipsISelLowering.cpp b/lib/Target/Mips/MipsISelLowering.cpp index d8097032ca..e9f330ffc1 100644 --- a/lib/Target/Mips/MipsISelLowering.cpp +++ b/lib/Target/Mips/MipsISelLowering.cpp @@ -321,6 +321,13 @@ MipsTargetLowering(MipsTargetMachine &TM) setTruncStoreAction(MVT::i64, MVT::i32, Custom); } + // @LOCALMOD-BEGIN + if (Subtarget->isTargetNaCl()) { + setOperationAction(ISD::NACL_TP_TLS_OFFSET, MVT::i32, Custom); + setOperationAction(ISD::NACL_TP_TDB_OFFSET, MVT::i32, Custom); + } + // @LOCALMOD-END + setTargetDAGCombine(ISD::ADDE); setTargetDAGCombine(ISD::SUBE); setTargetDAGCombine(ISD::SDIVREM); @@ -870,6 +877,11 @@ LowerOperation(SDValue Op, SelectionDAG &DAG) const case ISD::STORE: return LowerSTORE(Op, DAG); case ISD::INTRINSIC_WO_CHAIN: return LowerINTRINSIC_WO_CHAIN(Op, DAG); case ISD::INTRINSIC_W_CHAIN: return LowerINTRINSIC_W_CHAIN(Op, DAG); + + // @LOCALMOD-BEGIN + case ISD::NACL_TP_TLS_OFFSET: return LowerNaClTpTlsOffset(Op, DAG); + case ISD::NACL_TP_TDB_OFFSET: return LowerNaClTpTdbOffset(Op, DAG); + // @LOCALMOD-END } return SDValue(); } @@ -1766,6 +1778,24 @@ SDValue MipsTargetLowering::LowerBlockAddress(SDValue Op, return DAG.getNode(ISD::ADD, dl, ValTy, Load, Lo); } +// @LOCALMOD-BEGIN + +// NaCl TLS setup / layout intrinsics. +// See: native_client/src/untrusted/nacl/tls_params.h +SDValue MipsTargetLowering::LowerNaClTpTlsOffset(SDValue Op, + SelectionDAG &DAG) const { + return DAG.getConstant(0, Op.getValueType().getSimpleVT()); +} + +SDValue MipsTargetLowering::LowerNaClTpTdbOffset(SDValue Op, + SelectionDAG &DAG) const { + DebugLoc dl = Op.getDebugLoc(); + return DAG.getNode(ISD::SUB, dl, Op.getValueType().getSimpleVT(), + DAG.getConstant(0, Op.getValueType().getSimpleVT()), + Op.getOperand(0)); +} +// @LOCALMOD-END + SDValue MipsTargetLowering:: LowerGlobalTLSAddress(SDValue Op, SelectionDAG &DAG) const { @@ -1780,6 +1810,34 @@ LowerGlobalTLSAddress(SDValue Op, SelectionDAG &DAG) const TLSModel::Model model = getTargetMachine().getTLSModel(GV); + // @LOCALMOD-BEGIN + if (getTargetMachine().getSubtarget<MipsSubtarget>().isTargetNaCl()) { + SDVTList VTs = DAG.getVTList(MVT::i32); + SDValue TGAHi = DAG.getTargetGlobalAddress(GV, dl, MVT::i32, 0, + MipsII::MO_TPREL_HI); + SDValue TGALo = DAG.getTargetGlobalAddress(GV, dl, MVT::i32, 0, + MipsII::MO_TPREL_LO); + SDValue Hi = DAG.getNode(MipsISD::Hi, dl, VTs, &TGAHi, 1); + SDValue Lo = DAG.getNode(MipsISD::Lo, dl, MVT::i32, TGALo); + SDValue Offset = DAG.getNode(ISD::ADD, dl, MVT::i32, Hi, Lo); + + unsigned PtrSize = PtrVT.getSizeInBits(); + IntegerType *PtrTy = Type::getIntNTy(*DAG.getContext(), PtrSize); + + SDValue TlsGetAddr = DAG.getExternalSymbol("__tls_get_addr", PtrVT); + + ArgListTy Args; + std::pair<SDValue, SDValue> CallResult = + LowerCallTo(DAG.getEntryNode(), + (Type *) Type::getInt32Ty(*DAG.getContext()), + false, false, false, false, 0, CallingConv::C, false, + false, true, TlsGetAddr, Args, DAG, dl); + + SDValue ThreadPointer = CallResult.first; + return DAG.getNode(ISD::ADD, dl, PtrVT, ThreadPointer, Offset); + } + // @LOCALMOD-END + if (model == TLSModel::GeneralDynamic || model == TLSModel::LocalDynamic) { // General Dynamic and Local Dynamic TLS Model. unsigned Flag = (model == TLSModel::LocalDynamic) ? MipsII::MO_TLSLDM |