diff options
Diffstat (limited to 'lib/Target/Mips/MCTargetDesc/MipsTargetStreamer.cpp')
| -rw-r--r-- | lib/Target/Mips/MCTargetDesc/MipsTargetStreamer.cpp | 153 |
1 files changed, 153 insertions, 0 deletions
diff --git a/lib/Target/Mips/MCTargetDesc/MipsTargetStreamer.cpp b/lib/Target/Mips/MCTargetDesc/MipsTargetStreamer.cpp index fb6aff2..a8fa272 100644 --- a/lib/Target/Mips/MCTargetDesc/MipsTargetStreamer.cpp +++ b/lib/Target/Mips/MCTargetDesc/MipsTargetStreamer.cpp @@ -85,6 +85,13 @@ void MipsTargetAsmStreamer::emitDirectiveEnt(const MCSymbol &Symbol) { } void MipsTargetAsmStreamer::emitDirectiveAbiCalls() { OS << "\t.abicalls\n"; } + +void MipsTargetAsmStreamer::emitDirectiveNaN2008() { OS << "\t.nan\t2008\n"; } + +void MipsTargetAsmStreamer::emitDirectiveNaNLegacy() { + OS << "\t.nan\tlegacy\n"; +} + void MipsTargetAsmStreamer::emitDirectiveOptionPic0() { OS << "\t.option\tpic0\n"; } @@ -137,6 +144,29 @@ void MipsTargetAsmStreamer::emitFMask(unsigned FPUBitmask, OS << "," << FPUTopSavedRegOff << '\n'; } +void MipsTargetAsmStreamer::emitDirectiveCpload(unsigned RegNo) { + OS << "\t.cpload\t$" + << StringRef(MipsInstPrinter::getRegisterName(RegNo)).lower() << "\n"; +} + +void MipsTargetAsmStreamer::emitDirectiveCpsetup(unsigned RegNo, + int RegOrOffset, + const MCSymbol &Sym, + bool IsReg) { + OS << "\t.cpsetup\t$" + << StringRef(MipsInstPrinter::getRegisterName(RegNo)).lower() << ", "; + + if (IsReg) + OS << "$" + << StringRef(MipsInstPrinter::getRegisterName(RegOrOffset)).lower(); + else + OS << RegOrOffset; + + OS << ", "; + + OS << Sym.getName() << "\n"; +} + // This part is for ELF object output. MipsTargetELFStreamer::MipsTargetELFStreamer(MCStreamer &S, const MCSubtargetInfo &STI) @@ -180,6 +210,10 @@ MipsTargetELFStreamer::MipsTargetELFStreamer(MCStreamer &S, EFlags |= ELF::EF_MIPS_ABI_O32; } + // Other options. + if (Features & Mips::FeatureNaN2008) + EFlags |= ELF::EF_MIPS_NAN2008; + MCA.setELFHeaderEFlags(EFlags); } @@ -325,6 +359,21 @@ void MipsTargetELFStreamer::emitDirectiveAbiCalls() { Flags |= ELF::EF_MIPS_CPIC | ELF::EF_MIPS_PIC; MCA.setELFHeaderEFlags(Flags); } + +void MipsTargetELFStreamer::emitDirectiveNaN2008() { + MCAssembler &MCA = getStreamer().getAssembler(); + unsigned Flags = MCA.getELFHeaderEFlags(); + Flags |= ELF::EF_MIPS_NAN2008; + MCA.setELFHeaderEFlags(Flags); +} + +void MipsTargetELFStreamer::emitDirectiveNaNLegacy() { + MCAssembler &MCA = getStreamer().getAssembler(); + unsigned Flags = MCA.getELFHeaderEFlags(); + Flags &= ~ELF::EF_MIPS_NAN2008; + MCA.setELFHeaderEFlags(Flags); +} + void MipsTargetELFStreamer::emitDirectiveOptionPic0() { MCAssembler &MCA = getStreamer().getAssembler(); unsigned Flags = MCA.getELFHeaderEFlags(); @@ -376,3 +425,107 @@ void MipsTargetELFStreamer::emitDirectiveSetMips64R2() { void MipsTargetELFStreamer::emitDirectiveSetDsp() { // No action required for ELF output. } + +void MipsTargetELFStreamer::emitDirectiveCpload(unsigned RegNo) { + // .cpload $reg + // This directive expands to: + // lui $gp, %hi(_gp_disp) + // addui $gp, $gp, %lo(_gp_disp) + // addu $gp, $gp, $reg + // when support for position independent code is enabled. + if (!Pic || (isN32() || isN64())) + return; + + // There's a GNU extension controlled by -mno-shared that allows + // locally-binding symbols to be accessed using absolute addresses. + // This is currently not supported. When supported -mno-shared makes + // .cpload expand to: + // lui $gp, %hi(__gnu_local_gp) + // addiu $gp, $gp, %lo(__gnu_local_gp) + + StringRef SymName("_gp_disp"); + MCAssembler &MCA = getStreamer().getAssembler(); + MCSymbol *GP_Disp = MCA.getContext().GetOrCreateSymbol(SymName); + MCA.getOrCreateSymbolData(*GP_Disp); + + MCInst TmpInst; + TmpInst.setOpcode(Mips::LUi); + TmpInst.addOperand(MCOperand::CreateReg(Mips::GP)); + const MCSymbolRefExpr *HiSym = MCSymbolRefExpr::Create( + "_gp_disp", MCSymbolRefExpr::VK_Mips_ABS_HI, MCA.getContext()); + TmpInst.addOperand(MCOperand::CreateExpr(HiSym)); + getStreamer().EmitInstruction(TmpInst, STI); + + TmpInst.clear(); + + TmpInst.setOpcode(Mips::ADDiu); + TmpInst.addOperand(MCOperand::CreateReg(Mips::GP)); + TmpInst.addOperand(MCOperand::CreateReg(Mips::GP)); + const MCSymbolRefExpr *LoSym = MCSymbolRefExpr::Create( + "_gp_disp", MCSymbolRefExpr::VK_Mips_ABS_LO, MCA.getContext()); + TmpInst.addOperand(MCOperand::CreateExpr(LoSym)); + getStreamer().EmitInstruction(TmpInst, STI); + + TmpInst.clear(); + + TmpInst.setOpcode(Mips::ADDu); + TmpInst.addOperand(MCOperand::CreateReg(Mips::GP)); + TmpInst.addOperand(MCOperand::CreateReg(Mips::GP)); + TmpInst.addOperand(MCOperand::CreateReg(RegNo)); + getStreamer().EmitInstruction(TmpInst, STI); +} + +void MipsTargetELFStreamer::emitDirectiveCpsetup(unsigned RegNo, + int RegOrOffset, + const MCSymbol &Sym, + bool IsReg) { + // Only N32 and N64 emit anything for .cpsetup iff PIC is set. + if (!Pic || !(isN32() || isN64())) + return; + + MCAssembler &MCA = getStreamer().getAssembler(); + MCInst Inst; + + // Either store the old $gp in a register or on the stack + if (IsReg) { + // move $save, $gpreg + Inst.setOpcode(Mips::DADDu); + Inst.addOperand(MCOperand::CreateReg(RegOrOffset)); + Inst.addOperand(MCOperand::CreateReg(Mips::GP)); + Inst.addOperand(MCOperand::CreateReg(Mips::ZERO)); + } else { + // sd $gpreg, offset($sp) + Inst.setOpcode(Mips::SD); + Inst.addOperand(MCOperand::CreateReg(Mips::GP)); + Inst.addOperand(MCOperand::CreateReg(Mips::SP)); + Inst.addOperand(MCOperand::CreateImm(RegOrOffset)); + } + getStreamer().EmitInstruction(Inst, STI); + Inst.clear(); + + const MCSymbolRefExpr *HiExpr = MCSymbolRefExpr::Create( + Sym.getName(), MCSymbolRefExpr::VK_Mips_GPOFF_HI, MCA.getContext()); + const MCSymbolRefExpr *LoExpr = MCSymbolRefExpr::Create( + Sym.getName(), MCSymbolRefExpr::VK_Mips_GPOFF_LO, MCA.getContext()); + // lui $gp, %hi(%neg(%gp_rel(funcSym))) + Inst.setOpcode(Mips::LUi); + Inst.addOperand(MCOperand::CreateReg(Mips::GP)); + Inst.addOperand(MCOperand::CreateExpr(HiExpr)); + getStreamer().EmitInstruction(Inst, STI); + Inst.clear(); + + // addiu $gp, $gp, %lo(%neg(%gp_rel(funcSym))) + Inst.setOpcode(Mips::ADDiu); + Inst.addOperand(MCOperand::CreateReg(Mips::GP)); + Inst.addOperand(MCOperand::CreateReg(Mips::GP)); + Inst.addOperand(MCOperand::CreateExpr(LoExpr)); + getStreamer().EmitInstruction(Inst, STI); + Inst.clear(); + + // daddu $gp, $gp, $funcreg + Inst.setOpcode(Mips::DADDu); + Inst.addOperand(MCOperand::CreateReg(Mips::GP)); + Inst.addOperand(MCOperand::CreateReg(Mips::GP)); + Inst.addOperand(MCOperand::CreateReg(RegNo)); + getStreamer().EmitInstruction(Inst, STI); +} |