diff options
Diffstat (limited to 'lib/Target/PowerPC/AsmPrinter')
| -rw-r--r-- | lib/Target/PowerPC/AsmPrinter/CMakeLists.txt | 6 | ||||
| -rw-r--r-- | lib/Target/PowerPC/AsmPrinter/Makefile | 15 | ||||
| -rw-r--r-- | lib/Target/PowerPC/AsmPrinter/PPCAsmPrinter.cpp | 922 |
3 files changed, 0 insertions, 943 deletions
diff --git a/lib/Target/PowerPC/AsmPrinter/CMakeLists.txt b/lib/Target/PowerPC/AsmPrinter/CMakeLists.txt deleted file mode 100644 index 42cd486..0000000 --- a/lib/Target/PowerPC/AsmPrinter/CMakeLists.txt +++ /dev/null @@ -1,6 +0,0 @@ -include_directories( ${CMAKE_CURRENT_BINARY_DIR}/.. ${CMAKE_CURRENT_SOURCE_DIR}/.. ) - -add_llvm_library(LLVMPowerPCAsmPrinter - PPCAsmPrinter.cpp - ) -add_dependencies(LLVMPowerPCAsmPrinter PowerPCCodeGenTable_gen) diff --git a/lib/Target/PowerPC/AsmPrinter/Makefile b/lib/Target/PowerPC/AsmPrinter/Makefile deleted file mode 100644 index bd5dce1..0000000 --- a/lib/Target/PowerPC/AsmPrinter/Makefile +++ /dev/null @@ -1,15 +0,0 @@ -##===- lib/Target/PowerPC/AsmPrinter/Makefile --------------*- Makefile -*-===## -# -# The LLVM Compiler Infrastructure -# -# This file is distributed under the University of Illinois Open Source -# License. See LICENSE.TXT for details. -# -##===----------------------------------------------------------------------===## -LEVEL = ../../../.. -LIBRARYNAME = LLVMPowerPCAsmPrinter - -# Hack: we need to include 'main' PowerPC target directory to grab private headers -CPP.Flags += -I$(PROJ_OBJ_DIR)/.. -I$(PROJ_SRC_DIR)/.. - -include $(LEVEL)/Makefile.common diff --git a/lib/Target/PowerPC/AsmPrinter/PPCAsmPrinter.cpp b/lib/Target/PowerPC/AsmPrinter/PPCAsmPrinter.cpp deleted file mode 100644 index c1a5663..0000000 --- a/lib/Target/PowerPC/AsmPrinter/PPCAsmPrinter.cpp +++ /dev/null @@ -1,922 +0,0 @@ -//===-- PPCAsmPrinter.cpp - Print machine instrs to PowerPC assembly --------=// -// -// The LLVM Compiler Infrastructure -// -// This file is distributed under the University of Illinois Open Source -// License. See LICENSE.TXT for details. -// -//===----------------------------------------------------------------------===// -// -// This file contains a printer that converts from our internal representation -// of machine-dependent LLVM code to PowerPC assembly language. This printer is -// the output mechanism used by `llc'. -// -// Documentation at http://developer.apple.com/documentation/DeveloperTools/ -// Reference/Assembler/ASMIntroduction/chapter_1_section_1.html -// -//===----------------------------------------------------------------------===// - -#define DEBUG_TYPE "asmprinter" -#include "PPC.h" -#include "PPCPredicates.h" -#include "PPCTargetMachine.h" -#include "PPCSubtarget.h" -#include "llvm/Analysis/DebugInfo.h" -#include "llvm/Constants.h" -#include "llvm/DerivedTypes.h" -#include "llvm/Module.h" -#include "llvm/Assembly/Writer.h" -#include "llvm/CodeGen/AsmPrinter.h" -#include "llvm/CodeGen/MachineFunctionPass.h" -#include "llvm/CodeGen/MachineInstr.h" -#include "llvm/CodeGen/MachineInstrBuilder.h" -#include "llvm/CodeGen/MachineModuleInfoImpls.h" -#include "llvm/CodeGen/TargetLoweringObjectFileImpl.h" -#include "llvm/MC/MCAsmInfo.h" -#include "llvm/MC/MCContext.h" -#include "llvm/MC/MCExpr.h" -#include "llvm/MC/MCSectionMachO.h" -#include "llvm/MC/MCStreamer.h" -#include "llvm/MC/MCSymbol.h" -#include "llvm/Target/Mangler.h" -#include "llvm/Target/TargetRegisterInfo.h" -#include "llvm/Target/TargetInstrInfo.h" -#include "llvm/Target/TargetOptions.h" -#include "llvm/Target/TargetRegistry.h" -#include "llvm/Support/Debug.h" -#include "llvm/Support/MathExtras.h" -#include "llvm/Support/ErrorHandling.h" -#include "llvm/Support/raw_ostream.h" -#include "llvm/ADT/StringExtras.h" -#include "llvm/ADT/StringSet.h" -#include "llvm/ADT/SmallString.h" -using namespace llvm; - -namespace { - class PPCAsmPrinter : public AsmPrinter { - protected: - DenseMap<MCSymbol*, MCSymbol*> TOC; - const PPCSubtarget &Subtarget; - uint64_t LabelID; - public: - explicit PPCAsmPrinter(TargetMachine &TM, MCStreamer &Streamer) - : AsmPrinter(TM, Streamer), - Subtarget(TM.getSubtarget<PPCSubtarget>()), LabelID(0) {} - - virtual const char *getPassName() const { - return "PowerPC Assembly Printer"; - } - - PPCTargetMachine &getTM() { - return static_cast<PPCTargetMachine&>(TM); - } - - unsigned enumRegToMachineReg(unsigned enumReg) { - switch (enumReg) { - default: llvm_unreachable("Unhandled register!"); - case PPC::CR0: return 0; - case PPC::CR1: return 1; - case PPC::CR2: return 2; - case PPC::CR3: return 3; - case PPC::CR4: return 4; - case PPC::CR5: return 5; - case PPC::CR6: return 6; - case PPC::CR7: return 7; - } - llvm_unreachable(0); - } - - /// printInstruction - This method is automatically generated by tablegen - /// from the instruction set description. This method returns true if the - /// machine instruction was sufficiently described to print it, otherwise it - /// returns false. - void printInstruction(const MachineInstr *MI, raw_ostream &O); - static const char *getRegisterName(unsigned RegNo); - - - virtual void EmitInstruction(const MachineInstr *MI); - void printOp(const MachineOperand &MO, raw_ostream &O); - - /// stripRegisterPrefix - This method strips the character prefix from a - /// register name so that only the number is left. Used by for linux asm. - const char *stripRegisterPrefix(const char *RegName) { - switch (RegName[0]) { - case 'r': - case 'f': - case 'v': return RegName + 1; - case 'c': if (RegName[1] == 'r') return RegName + 2; - } - - return RegName; - } - - /// printRegister - Print register according to target requirements. - /// - void printRegister(const MachineOperand &MO, bool R0AsZero, raw_ostream &O){ - unsigned RegNo = MO.getReg(); - assert(TargetRegisterInfo::isPhysicalRegister(RegNo) && "Not physreg??"); - - // If we should use 0 for R0. - if (R0AsZero && RegNo == PPC::R0) { - O << "0"; - return; - } - - const char *RegName = getRegisterName(RegNo); - // Linux assembler (Others?) does not take register mnemonics. - // FIXME - What about special registers used in mfspr/mtspr? - if (!Subtarget.isDarwin()) RegName = stripRegisterPrefix(RegName); - O << RegName; - } - - void printOperand(const MachineInstr *MI, unsigned OpNo, raw_ostream &O) { - const MachineOperand &MO = MI->getOperand(OpNo); - if (MO.isReg()) { - printRegister(MO, false, O); - } else if (MO.isImm()) { - O << MO.getImm(); - } else { - printOp(MO, O); - } - } - - bool PrintAsmOperand(const MachineInstr *MI, unsigned OpNo, - unsigned AsmVariant, const char *ExtraCode, - raw_ostream &O); - bool PrintAsmMemoryOperand(const MachineInstr *MI, unsigned OpNo, - unsigned AsmVariant, const char *ExtraCode, - raw_ostream &O); - - - void printS5ImmOperand(const MachineInstr *MI, unsigned OpNo, - raw_ostream &O) { - char value = MI->getOperand(OpNo).getImm(); - value = (value << (32-5)) >> (32-5); - O << (int)value; - } - void printU5ImmOperand(const MachineInstr *MI, unsigned OpNo, - raw_ostream &O) { - unsigned char value = MI->getOperand(OpNo).getImm(); - assert(value <= 31 && "Invalid u5imm argument!"); - O << (unsigned int)value; - } - void printU6ImmOperand(const MachineInstr *MI, unsigned OpNo, - raw_ostream &O) { - unsigned char value = MI->getOperand(OpNo).getImm(); - assert(value <= 63 && "Invalid u6imm argument!"); - O << (unsigned int)value; - } - void printS16ImmOperand(const MachineInstr *MI, unsigned OpNo, - raw_ostream &O) { - O << (short)MI->getOperand(OpNo).getImm(); - } - void printU16ImmOperand(const MachineInstr *MI, unsigned OpNo, - raw_ostream &O) { - O << (unsigned short)MI->getOperand(OpNo).getImm(); - } - void printS16X4ImmOperand(const MachineInstr *MI, unsigned OpNo, - raw_ostream &O) { - if (MI->getOperand(OpNo).isImm()) { - O << (short)(MI->getOperand(OpNo).getImm()*4); - } else { - O << "lo16("; - printOp(MI->getOperand(OpNo), O); - if (TM.getRelocationModel() == Reloc::PIC_) - O << "-\"L" << getFunctionNumber() << "$pb\")"; - else - O << ')'; - } - } - void printBranchOperand(const MachineInstr *MI, unsigned OpNo, - raw_ostream &O) { - // Branches can take an immediate operand. This is used by the branch - // selection pass to print $+8, an eight byte displacement from the PC. - if (MI->getOperand(OpNo).isImm()) { - O << "$+" << MI->getOperand(OpNo).getImm()*4; - } else { - printOp(MI->getOperand(OpNo), O); - } - } - void printCallOperand(const MachineInstr *MI, unsigned OpNo, - raw_ostream &O) { - const MachineOperand &MO = MI->getOperand(OpNo); - if (TM.getRelocationModel() != Reloc::Static) { - if (MO.isGlobal()) { - const GlobalValue *GV = MO.getGlobal(); - if (GV->isDeclaration() || GV->isWeakForLinker()) { - // Dynamically-resolved functions need a stub for the function. - MCSymbol *Sym = GetSymbolWithGlobalValueBase(GV, "$stub"); - MachineModuleInfoImpl::StubValueTy &StubSym = - MMI->getObjFileInfo<MachineModuleInfoMachO>().getFnStubEntry(Sym); - if (StubSym.getPointer() == 0) - StubSym = MachineModuleInfoImpl:: - StubValueTy(Mang->getSymbol(GV), !GV->hasInternalLinkage()); - O << *Sym; - return; - } - } - if (MO.isSymbol()) { - SmallString<128> TempNameStr; - TempNameStr += StringRef(MO.getSymbolName()); - TempNameStr += StringRef("$stub"); - - MCSymbol *Sym = GetExternalSymbolSymbol(TempNameStr.str()); - MachineModuleInfoImpl::StubValueTy &StubSym = - MMI->getObjFileInfo<MachineModuleInfoMachO>().getFnStubEntry(Sym); - if (StubSym.getPointer() == 0) - StubSym = MachineModuleInfoImpl:: - StubValueTy(GetExternalSymbolSymbol(MO.getSymbolName()), true); - O << *Sym; - return; - } - } - - printOp(MI->getOperand(OpNo), O); - } - void printAbsAddrOperand(const MachineInstr *MI, unsigned OpNo, - raw_ostream &O) { - O << (int)MI->getOperand(OpNo).getImm()*4; - } - void printPICLabel(const MachineInstr *MI, unsigned OpNo, raw_ostream &O) { - O << "\"L" << getFunctionNumber() << "$pb\"\n"; - O << "\"L" << getFunctionNumber() << "$pb\":"; - } - void printSymbolHi(const MachineInstr *MI, unsigned OpNo, raw_ostream &O) { - if (MI->getOperand(OpNo).isImm()) { - printS16ImmOperand(MI, OpNo, O); - } else { - if (Subtarget.isDarwin()) O << "ha16("; - printOp(MI->getOperand(OpNo), O); - if (TM.getRelocationModel() == Reloc::PIC_) - O << "-\"L" << getFunctionNumber() << "$pb\""; - if (Subtarget.isDarwin()) - O << ')'; - else - O << "@ha"; - } - } - void printSymbolLo(const MachineInstr *MI, unsigned OpNo, raw_ostream &O) { - if (MI->getOperand(OpNo).isImm()) { - printS16ImmOperand(MI, OpNo, O); - } else { - if (Subtarget.isDarwin()) O << "lo16("; - printOp(MI->getOperand(OpNo), O); - if (TM.getRelocationModel() == Reloc::PIC_) - O << "-\"L" << getFunctionNumber() << "$pb\""; - if (Subtarget.isDarwin()) - O << ')'; - else - O << "@l"; - } - } - void printcrbitm(const MachineInstr *MI, unsigned OpNo, raw_ostream &O) { - unsigned CCReg = MI->getOperand(OpNo).getReg(); - unsigned RegNo = enumRegToMachineReg(CCReg); - O << (0x80 >> RegNo); - } - // The new addressing mode printers. - void printMemRegImm(const MachineInstr *MI, unsigned OpNo, raw_ostream &O) { - printSymbolLo(MI, OpNo, O); - O << '('; - if (MI->getOperand(OpNo+1).isReg() && - MI->getOperand(OpNo+1).getReg() == PPC::R0) - O << "0"; - else - printOperand(MI, OpNo+1, O); - O << ')'; - } - void printMemRegImmShifted(const MachineInstr *MI, unsigned OpNo, - raw_ostream &O) { - if (MI->getOperand(OpNo).isImm()) - printS16X4ImmOperand(MI, OpNo, O); - else - printSymbolLo(MI, OpNo, O); - O << '('; - if (MI->getOperand(OpNo+1).isReg() && - MI->getOperand(OpNo+1).getReg() == PPC::R0) - O << "0"; - else - printOperand(MI, OpNo+1, O); - O << ')'; - } - - void printMemRegReg(const MachineInstr *MI, unsigned OpNo, raw_ostream &O) { - // When used as the base register, r0 reads constant zero rather than - // the value contained in the register. For this reason, the darwin - // assembler requires that we print r0 as 0 (no r) when used as the base. - const MachineOperand &MO = MI->getOperand(OpNo); - printRegister(MO, true, O); - O << ", "; - printOperand(MI, OpNo+1, O); - } - - void printTOCEntryLabel(const MachineInstr *MI, unsigned OpNo, - raw_ostream &O) { - const MachineOperand &MO = MI->getOperand(OpNo); - assert(MO.isGlobal()); - MCSymbol *Sym = Mang->getSymbol(MO.getGlobal()); - - // Map symbol -> label of TOC entry. - MCSymbol *&TOCEntry = TOC[Sym]; - if (TOCEntry == 0) - TOCEntry = OutContext. - GetOrCreateSymbol(StringRef(MAI->getPrivateGlobalPrefix()) + - "C" + Twine(LabelID++)); - - O << *TOCEntry << "@toc"; - } - - void printPredicateOperand(const MachineInstr *MI, unsigned OpNo, - raw_ostream &O, const char *Modifier); - - MachineLocation getDebugValueLocation(const MachineInstr *MI) const { - - MachineLocation Location; - assert (MI->getNumOperands() == 4 && "Invalid no. of machine operands!"); - // Frame address. Currently handles register +- offset only. - if (MI->getOperand(0).isReg() && MI->getOperand(2).isImm()) - Location.set(MI->getOperand(0).getReg(), MI->getOperand(2).getImm()); - else { - DEBUG(dbgs() << "DBG_VALUE instruction ignored! " << *MI << "\n"); - } - return Location; - } - }; - - /// PPCLinuxAsmPrinter - PowerPC assembly printer, customized for Linux - class PPCLinuxAsmPrinter : public PPCAsmPrinter { - public: - explicit PPCLinuxAsmPrinter(TargetMachine &TM, MCStreamer &Streamer) - : PPCAsmPrinter(TM, Streamer) {} - - virtual const char *getPassName() const { - return "Linux PPC Assembly Printer"; - } - - bool doFinalization(Module &M); - - virtual void EmitFunctionEntryLabel(); - }; - - /// PPCDarwinAsmPrinter - PowerPC assembly printer, customized for Darwin/Mac - /// OS X - class PPCDarwinAsmPrinter : public PPCAsmPrinter { - public: - explicit PPCDarwinAsmPrinter(TargetMachine &TM, MCStreamer &Streamer) - : PPCAsmPrinter(TM, Streamer) {} - - virtual const char *getPassName() const { - return "Darwin PPC Assembly Printer"; - } - - bool doFinalization(Module &M); - void EmitStartOfAsmFile(Module &M); - - void EmitFunctionStubs(const MachineModuleInfoMachO::SymbolListTy &Stubs); - }; -} // end of anonymous namespace - -// Include the auto-generated portion of the assembly writer -#include "PPCGenAsmWriter.inc" - -void PPCAsmPrinter::printOp(const MachineOperand &MO, raw_ostream &O) { - switch (MO.getType()) { - case MachineOperand::MO_Immediate: - llvm_unreachable("printOp() does not handle immediate values"); - - case MachineOperand::MO_MachineBasicBlock: - O << *MO.getMBB()->getSymbol(); - return; - case MachineOperand::MO_JumpTableIndex: - O << MAI->getPrivateGlobalPrefix() << "JTI" << getFunctionNumber() - << '_' << MO.getIndex(); - // FIXME: PIC relocation model - return; - case MachineOperand::MO_ConstantPoolIndex: - O << MAI->getPrivateGlobalPrefix() << "CPI" << getFunctionNumber() - << '_' << MO.getIndex(); - return; - case MachineOperand::MO_BlockAddress: - O << *GetBlockAddressSymbol(MO.getBlockAddress()); - return; - case MachineOperand::MO_ExternalSymbol: { - // Computing the address of an external symbol, not calling it. - if (TM.getRelocationModel() == Reloc::Static) { - O << *GetExternalSymbolSymbol(MO.getSymbolName()); - return; - } - - MCSymbol *NLPSym = - OutContext.GetOrCreateSymbol(StringRef(MAI->getGlobalPrefix())+ - MO.getSymbolName()+"$non_lazy_ptr"); - MachineModuleInfoImpl::StubValueTy &StubSym = - MMI->getObjFileInfo<MachineModuleInfoMachO>().getGVStubEntry(NLPSym); - if (StubSym.getPointer() == 0) - StubSym = MachineModuleInfoImpl:: - StubValueTy(GetExternalSymbolSymbol(MO.getSymbolName()), true); - - O << *NLPSym; - return; - } - case MachineOperand::MO_GlobalAddress: { - // Computing the address of a global symbol, not calling it. - const GlobalValue *GV = MO.getGlobal(); - MCSymbol *SymToPrint; - - // External or weakly linked global variables need non-lazily-resolved stubs - if (TM.getRelocationModel() != Reloc::Static && - (GV->isDeclaration() || GV->isWeakForLinker())) { - if (!GV->hasHiddenVisibility()) { - SymToPrint = GetSymbolWithGlobalValueBase(GV, "$non_lazy_ptr"); - MachineModuleInfoImpl::StubValueTy &StubSym = - MMI->getObjFileInfo<MachineModuleInfoMachO>() - .getGVStubEntry(SymToPrint); - if (StubSym.getPointer() == 0) - StubSym = MachineModuleInfoImpl:: - StubValueTy(Mang->getSymbol(GV), !GV->hasInternalLinkage()); - } else if (GV->isDeclaration() || GV->hasCommonLinkage() || - GV->hasAvailableExternallyLinkage()) { - SymToPrint = GetSymbolWithGlobalValueBase(GV, "$non_lazy_ptr"); - - MachineModuleInfoImpl::StubValueTy &StubSym = - MMI->getObjFileInfo<MachineModuleInfoMachO>(). - getHiddenGVStubEntry(SymToPrint); - if (StubSym.getPointer() == 0) - StubSym = MachineModuleInfoImpl:: - StubValueTy(Mang->getSymbol(GV), !GV->hasInternalLinkage()); - } else { - SymToPrint = Mang->getSymbol(GV); - } - } else { - SymToPrint = Mang->getSymbol(GV); - } - - O << *SymToPrint; - - printOffset(MO.getOffset(), O); - return; - } - - default: - O << "<unknown operand type: " << MO.getType() << ">"; - return; - } -} - -/// PrintAsmOperand - Print out an operand for an inline asm expression. -/// -bool PPCAsmPrinter::PrintAsmOperand(const MachineInstr *MI, unsigned OpNo, - unsigned AsmVariant, - const char *ExtraCode, raw_ostream &O) { - // Does this asm operand have a single letter operand modifier? - if (ExtraCode && ExtraCode[0]) { - if (ExtraCode[1] != 0) return true; // Unknown modifier. - - switch (ExtraCode[0]) { - default: return true; // Unknown modifier. - case 'c': // Don't print "$" before a global var name or constant. - // PPC never has a prefix. - printOperand(MI, OpNo, O); - return false; - case 'L': // Write second word of DImode reference. - // Verify that this operand has two consecutive registers. - if (!MI->getOperand(OpNo).isReg() || - OpNo+1 == MI->getNumOperands() || - !MI->getOperand(OpNo+1).isReg()) - return true; - ++OpNo; // Return the high-part. - break; - case 'I': - // Write 'i' if an integer constant, otherwise nothing. Used to print - // addi vs add, etc. - if (MI->getOperand(OpNo).isImm()) - O << "i"; - return false; - } - } - - printOperand(MI, OpNo, O); - return false; -} - -// At the moment, all inline asm memory operands are a single register. -// In any case, the output of this routine should always be just one -// assembler operand. - -bool PPCAsmPrinter::PrintAsmMemoryOperand(const MachineInstr *MI, unsigned OpNo, - unsigned AsmVariant, - const char *ExtraCode, - raw_ostream &O) { - if (ExtraCode && ExtraCode[0]) - return true; // Unknown modifier. - assert (MI->getOperand(OpNo).isReg()); - O << "0("; - printOperand(MI, OpNo, O); - O << ")"; - return false; -} - -void PPCAsmPrinter::printPredicateOperand(const MachineInstr *MI, unsigned OpNo, - raw_ostream &O, const char *Modifier){ - assert(Modifier && "Must specify 'cc' or 'reg' as predicate op modifier!"); - unsigned Code = MI->getOperand(OpNo).getImm(); - if (!strcmp(Modifier, "cc")) { - switch ((PPC::Predicate)Code) { - case PPC::PRED_ALWAYS: return; // Don't print anything for always. - case PPC::PRED_LT: O << "lt"; return; - case PPC::PRED_LE: O << "le"; return; - case PPC::PRED_EQ: O << "eq"; return; - case PPC::PRED_GE: O << "ge"; return; - case PPC::PRED_GT: O << "gt"; return; - case PPC::PRED_NE: O << "ne"; return; - case PPC::PRED_UN: O << "un"; return; - case PPC::PRED_NU: O << "nu"; return; - } - - } else { - assert(!strcmp(Modifier, "reg") && - "Need to specify 'cc' or 'reg' as predicate op modifier!"); - // Don't print the register for 'always'. - if (Code == PPC::PRED_ALWAYS) return; - printOperand(MI, OpNo+1, O); - } -} - - -/// EmitInstruction -- Print out a single PowerPC MI in Darwin syntax to -/// the current output stream. -/// -void PPCAsmPrinter::EmitInstruction(const MachineInstr *MI) { - SmallString<128> Str; - raw_svector_ostream O(Str); - - if (MI->getOpcode() == TargetOpcode::DBG_VALUE) { - unsigned NOps = MI->getNumOperands(); - assert(NOps==4); - O << '\t' << MAI->getCommentString() << "DEBUG_VALUE: "; - // cast away const; DIetc do not take const operands for some reason. - DIVariable V(const_cast<MDNode *>(MI->getOperand(NOps-1).getMetadata())); - O << V.getName(); - O << " <- "; - // Frame address. Currently handles register +- offset only. - assert(MI->getOperand(0).isReg() && MI->getOperand(1).isImm()); - O << '['; printOperand(MI, 0, O); O << '+'; printOperand(MI, 1, O); - O << ']'; - O << "+"; - printOperand(MI, NOps-2, O); - OutStreamer.EmitRawText(O.str()); - return; - } - // Check for slwi/srwi mnemonics. - if (MI->getOpcode() == PPC::RLWINM) { - unsigned char SH = MI->getOperand(2).getImm(); - unsigned char MB = MI->getOperand(3).getImm(); - unsigned char ME = MI->getOperand(4).getImm(); - bool useSubstituteMnemonic = false; - if (SH <= 31 && MB == 0 && ME == (31-SH)) { - O << "\tslwi "; useSubstituteMnemonic = true; - } - if (SH <= 31 && MB == (32-SH) && ME == 31) { - O << "\tsrwi "; useSubstituteMnemonic = true; - SH = 32-SH; - } - if (useSubstituteMnemonic) { - printOperand(MI, 0, O); - O << ", "; - printOperand(MI, 1, O); - O << ", " << (unsigned int)SH; - OutStreamer.EmitRawText(O.str()); - return; - } - } - - if ((MI->getOpcode() == PPC::OR || MI->getOpcode() == PPC::OR8) && - MI->getOperand(1).getReg() == MI->getOperand(2).getReg()) { - O << "\tmr "; - printOperand(MI, 0, O); - O << ", "; - printOperand(MI, 1, O); - OutStreamer.EmitRawText(O.str()); - return; - } - - if (MI->getOpcode() == PPC::RLDICR) { - unsigned char SH = MI->getOperand(2).getImm(); - unsigned char ME = MI->getOperand(3).getImm(); - // rldicr RA, RS, SH, 63-SH == sldi RA, RS, SH - if (63-SH == ME) { - O << "\tsldi "; - printOperand(MI, 0, O); - O << ", "; - printOperand(MI, 1, O); - O << ", " << (unsigned int)SH; - OutStreamer.EmitRawText(O.str()); - return; - } - } - - printInstruction(MI, O); - OutStreamer.EmitRawText(O.str()); -} - -void PPCLinuxAsmPrinter::EmitFunctionEntryLabel() { - if (!Subtarget.isPPC64()) // linux/ppc32 - Normal entry label. - return AsmPrinter::EmitFunctionEntryLabel(); - - // Emit an official procedure descriptor. - // FIXME 64-bit SVR4: Use MCSection here! - OutStreamer.EmitRawText(StringRef("\t.section\t\".opd\",\"aw\"")); - OutStreamer.EmitRawText(StringRef("\t.align 3")); - OutStreamer.EmitLabel(CurrentFnSym); - OutStreamer.EmitRawText("\t.quad .L." + Twine(CurrentFnSym->getName()) + - ",.TOC.@tocbase"); - OutStreamer.EmitRawText(StringRef("\t.previous")); - OutStreamer.EmitRawText(".L." + Twine(CurrentFnSym->getName()) + ":"); -} - - -bool PPCLinuxAsmPrinter::doFinalization(Module &M) { - const TargetData *TD = TM.getTargetData(); - - bool isPPC64 = TD->getPointerSizeInBits() == 64; - - if (isPPC64 && !TOC.empty()) { - // FIXME 64-bit SVR4: Use MCSection here? - OutStreamer.EmitRawText(StringRef("\t.section\t\".toc\",\"aw\"")); - - // FIXME: This is nondeterminstic! - for (DenseMap<MCSymbol*, MCSymbol*>::iterator I = TOC.begin(), - E = TOC.end(); I != E; ++I) { - OutStreamer.EmitLabel(I->second); - OutStreamer.EmitRawText("\t.tc " + Twine(I->first->getName()) + - "[TC]," + I->first->getName()); - } - } - - return AsmPrinter::doFinalization(M); -} - -void PPCDarwinAsmPrinter::EmitStartOfAsmFile(Module &M) { - static const char *const CPUDirectives[] = { - "", - "ppc", - "ppc601", - "ppc602", - "ppc603", - "ppc7400", - "ppc750", - "ppc970", - "ppc64" - }; - - unsigned Directive = Subtarget.getDarwinDirective(); - if (Subtarget.isGigaProcessor() && Directive < PPC::DIR_970) - Directive = PPC::DIR_970; - if (Subtarget.hasAltivec() && Directive < PPC::DIR_7400) - Directive = PPC::DIR_7400; - if (Subtarget.isPPC64() && Directive < PPC::DIR_970) - Directive = PPC::DIR_64; - assert(Directive <= PPC::DIR_64 && "Directive out of range."); - OutStreamer.EmitRawText("\t.machine " + Twine(CPUDirectives[Directive])); - - // Prime text sections so they are adjacent. This reduces the likelihood a - // large data or debug section causes a branch to exceed 16M limit. - const TargetLoweringObjectFileMachO &TLOFMacho = - static_cast<const TargetLoweringObjectFileMachO &>(getObjFileLowering()); - OutStreamer.SwitchSection(TLOFMacho.getTextCoalSection()); - if (TM.getRelocationModel() == Reloc::PIC_) { - OutStreamer.SwitchSection( - OutContext.getMachOSection("__TEXT", "__picsymbolstub1", - MCSectionMachO::S_SYMBOL_STUBS | - MCSectionMachO::S_ATTR_PURE_INSTRUCTIONS, - 32, SectionKind::getText())); - } else if (TM.getRelocationModel() == Reloc::DynamicNoPIC) { - OutStreamer.SwitchSection( - OutContext.getMachOSection("__TEXT","__symbol_stub1", - MCSectionMachO::S_SYMBOL_STUBS | - MCSectionMachO::S_ATTR_PURE_INSTRUCTIONS, - 16, SectionKind::getText())); - } - OutStreamer.SwitchSection(getObjFileLowering().getTextSection()); -} - -static MCSymbol *GetLazyPtr(MCSymbol *Sym, MCContext &Ctx) { - // Remove $stub suffix, add $lazy_ptr. - SmallString<128> TmpStr(Sym->getName().begin(), Sym->getName().end()-5); - TmpStr += "$lazy_ptr"; - return Ctx.GetOrCreateSymbol(TmpStr.str()); -} - -static MCSymbol *GetAnonSym(MCSymbol *Sym, MCContext &Ctx) { - // Add $tmp suffix to $stub, yielding $stub$tmp. - SmallString<128> TmpStr(Sym->getName().begin(), Sym->getName().end()); - TmpStr += "$tmp"; - return Ctx.GetOrCreateSymbol(TmpStr.str()); -} - -void PPCDarwinAsmPrinter:: -EmitFunctionStubs(const MachineModuleInfoMachO::SymbolListTy &Stubs) { - bool isPPC64 = TM.getTargetData()->getPointerSizeInBits() == 64; - - const TargetLoweringObjectFileMachO &TLOFMacho = - static_cast<const TargetLoweringObjectFileMachO &>(getObjFileLowering()); - - // .lazy_symbol_pointer - const MCSection *LSPSection = TLOFMacho.getLazySymbolPointerSection(); - - // Output stubs for dynamically-linked functions - if (TM.getRelocationModel() == Reloc::PIC_) { - const MCSection *StubSection = - OutContext.getMachOSection("__TEXT", "__picsymbolstub1", - MCSectionMachO::S_SYMBOL_STUBS | - MCSectionMachO::S_ATTR_PURE_INSTRUCTIONS, - 32, SectionKind::getText()); - for (unsigned i = 0, e = Stubs.size(); i != e; ++i) { - OutStreamer.SwitchSection(StubSection); - EmitAlignment(4); - - MCSymbol *Stub = Stubs[i].first; - MCSymbol *RawSym = Stubs[i].second.getPointer(); - MCSymbol *LazyPtr = GetLazyPtr(Stub, OutContext); - MCSymbol *AnonSymbol = GetAnonSym(Stub, OutContext); - - OutStreamer.EmitLabel(Stub); - OutStreamer.EmitSymbolAttribute(RawSym, MCSA_IndirectSymbol); - // FIXME: MCize this. - OutStreamer.EmitRawText(StringRef("\tmflr r0")); - OutStreamer.EmitRawText("\tbcl 20,31," + Twine(AnonSymbol->getName())); - OutStreamer.EmitLabel(AnonSymbol); - OutStreamer.EmitRawText(StringRef("\tmflr r11")); - OutStreamer.EmitRawText("\taddis r11,r11,ha16("+Twine(LazyPtr->getName())+ - "-" + AnonSymbol->getName() + ")"); - OutStreamer.EmitRawText(StringRef("\tmtlr r0")); - - if (isPPC64) - OutStreamer.EmitRawText("\tldu r12,lo16(" + Twine(LazyPtr->getName()) + - "-" + AnonSymbol->getName() + ")(r11)"); - else - OutStreamer.EmitRawText("\tlwzu r12,lo16(" + Twine(LazyPtr->getName()) + - "-" + AnonSymbol->getName() + ")(r11)"); - OutStreamer.EmitRawText(StringRef("\tmtctr r12")); - OutStreamer.EmitRawText(StringRef("\tbctr")); - - OutStreamer.SwitchSection(LSPSection); - OutStreamer.EmitLabel(LazyPtr); - OutStreamer.EmitSymbolAttribute(RawSym, MCSA_IndirectSymbol); - - if (isPPC64) - OutStreamer.EmitRawText(StringRef("\t.quad dyld_stub_binding_helper")); - else - OutStreamer.EmitRawText(StringRef("\t.long dyld_stub_binding_helper")); - } - OutStreamer.AddBlankLine(); - return; - } - - const MCSection *StubSection = - OutContext.getMachOSection("__TEXT","__symbol_stub1", - MCSectionMachO::S_SYMBOL_STUBS | - MCSectionMachO::S_ATTR_PURE_INSTRUCTIONS, - 16, SectionKind::getText()); - for (unsigned i = 0, e = Stubs.size(); i != e; ++i) { - MCSymbol *Stub = Stubs[i].first; - MCSymbol *RawSym = Stubs[i].second.getPointer(); - MCSymbol *LazyPtr = GetLazyPtr(Stub, OutContext); - - OutStreamer.SwitchSection(StubSection); - EmitAlignment(4); - OutStreamer.EmitLabel(Stub); - OutStreamer.EmitSymbolAttribute(RawSym, MCSA_IndirectSymbol); - OutStreamer.EmitRawText("\tlis r11,ha16(" + Twine(LazyPtr->getName()) +")"); - if (isPPC64) - OutStreamer.EmitRawText("\tldu r12,lo16(" + Twine(LazyPtr->getName()) + - ")(r11)"); - else - OutStreamer.EmitRawText("\tlwzu r12,lo16(" + Twine(LazyPtr->getName()) + - ")(r11)"); - OutStreamer.EmitRawText(StringRef("\tmtctr r12")); - OutStreamer.EmitRawText(StringRef("\tbctr")); - OutStreamer.SwitchSection(LSPSection); - OutStreamer.EmitLabel(LazyPtr); - OutStreamer.EmitSymbolAttribute(RawSym, MCSA_IndirectSymbol); - - if (isPPC64) - OutStreamer.EmitRawText(StringRef("\t.quad dyld_stub_binding_helper")); - else - OutStreamer.EmitRawText(StringRef("\t.long dyld_stub_binding_helper")); - } - - OutStreamer.AddBlankLine(); -} - - -bool PPCDarwinAsmPrinter::doFinalization(Module &M) { - bool isPPC64 = TM.getTargetData()->getPointerSizeInBits() == 64; - - // Darwin/PPC always uses mach-o. - const TargetLoweringObjectFileMachO &TLOFMacho = - static_cast<const TargetLoweringObjectFileMachO &>(getObjFileLowering()); - MachineModuleInfoMachO &MMIMacho = - MMI->getObjFileInfo<MachineModuleInfoMachO>(); - - MachineModuleInfoMachO::SymbolListTy Stubs = MMIMacho.GetFnStubList(); - if (!Stubs.empty()) - EmitFunctionStubs(Stubs); - - if (MAI->doesSupportExceptionHandling() && MMI) { - // Add the (possibly multiple) personalities to the set of global values. - // Only referenced functions get into the Personalities list. - const std::vector<const Function*> &Personalities = MMI->getPersonalities(); - for (std::vector<const Function*>::const_iterator I = Personalities.begin(), - E = Personalities.end(); I != E; ++I) { - if (*I) { - MCSymbol *NLPSym = GetSymbolWithGlobalValueBase(*I, "$non_lazy_ptr"); - MachineModuleInfoImpl::StubValueTy &StubSym = - MMIMacho.getGVStubEntry(NLPSym); - StubSym = MachineModuleInfoImpl::StubValueTy(Mang->getSymbol(*I), true); - } - } - } - - // Output stubs for dynamically-linked functions. - Stubs = MMIMacho.GetGVStubList(); - - // Output macho stubs for external and common global variables. - if (!Stubs.empty()) { - // Switch with ".non_lazy_symbol_pointer" directive. - OutStreamer.SwitchSection(TLOFMacho.getNonLazySymbolPointerSection()); - EmitAlignment(isPPC64 ? 3 : 2); - - for (unsigned i = 0, e = Stubs.size(); i != e; ++i) { - // L_foo$stub: - OutStreamer.EmitLabel(Stubs[i].first); - // .indirect_symbol _foo - MachineModuleInfoImpl::StubValueTy &MCSym = Stubs[i].second; - OutStreamer.EmitSymbolAttribute(MCSym.getPointer(), MCSA_IndirectSymbol); - - if (MCSym.getInt()) - // External to current translation unit. - OutStreamer.EmitIntValue(0, isPPC64 ? 8 : 4/*size*/, 0/*addrspace*/); - else - // Internal to current translation unit. - // - // When we place the LSDA into the TEXT section, the type info pointers - // need to be indirect and pc-rel. We accomplish this by using NLPs. - // However, sometimes the types are local to the file. So we need to - // fill in the value for the NLP in those cases. - OutStreamer.EmitValue(MCSymbolRefExpr::Create(MCSym.getPointer(), - OutContext), - isPPC64 ? 8 : 4/*size*/, 0/*addrspace*/); - } - - Stubs.clear(); - OutStreamer.AddBlankLine(); - } - - Stubs = MMIMacho.GetHiddenGVStubList(); - if (!Stubs.empty()) { - OutStreamer.SwitchSection(getObjFileLowering().getDataSection()); - EmitAlignment(isPPC64 ? 3 : 2); - - for (unsigned i = 0, e = Stubs.size(); i != e; ++i) { - // L_foo$stub: - OutStreamer.EmitLabel(Stubs[i].first); - // .long _foo - OutStreamer.EmitValue(MCSymbolRefExpr:: - Create(Stubs[i].second.getPointer(), - OutContext), - isPPC64 ? 8 : 4/*size*/, 0/*addrspace*/); - } - - Stubs.clear(); - OutStreamer.AddBlankLine(); - } - - // Funny Darwin hack: This flag tells the linker that no global symbols - // contain code that falls through to other global symbols (e.g. the obvious - // implementation of multiple entry points). If this doesn't occur, the - // linker can safely perform dead code stripping. Since LLVM never generates - // code that does this, it is always safe to set. - OutStreamer.EmitAssemblerFlag(MCAF_SubsectionsViaSymbols); - - return AsmPrinter::doFinalization(M); -} - -/// createPPCAsmPrinterPass - Returns a pass that prints the PPC assembly code -/// for a MachineFunction to the given output stream, in a format that the -/// Darwin assembler can deal with. -/// -static AsmPrinter *createPPCAsmPrinterPass(TargetMachine &tm, - MCStreamer &Streamer) { - const PPCSubtarget *Subtarget = &tm.getSubtarget<PPCSubtarget>(); - - if (Subtarget->isDarwin()) - return new PPCDarwinAsmPrinter(tm, Streamer); - return new PPCLinuxAsmPrinter(tm, Streamer); -} - -// Force static initialization. -extern "C" void LLVMInitializePowerPCAsmPrinter() { - TargetRegistry::RegisterAsmPrinter(ThePPC32Target, createPPCAsmPrinterPass); - TargetRegistry::RegisterAsmPrinter(ThePPC64Target, createPPCAsmPrinterPass); -} |
