+++ /dev/null
-include_directories( ${CMAKE_CURRENT_BINARY_DIR}/.. ${CMAKE_CURRENT_SOURCE_DIR}/.. )
-
-add_llvm_library(LLVMPowerPCAsmPrinter
- PPCAsmPrinter.cpp
- )
-add_dependencies(LLVMPowerPCAsmPrinter PowerPCCodeGenTable_gen)
+++ /dev/null
-##===- lib/Target/PowerPC/AsmPrinter/Makefile --------------*- Makefile -*-===##
-#
-# The LLVM Compiler Infrastructure
-#
-# This file is distributed under the University of Illinois Open Source
-# License. See LICENSE.TXT for details.
-#
-##===----------------------------------------------------------------------===##
-LEVEL = ../../../..
-LIBRARYNAME = LLVMPowerPCAsmPrinter
-
-# Hack: we need to include 'main' PowerPC target directory to grab private headers
-CPP.Flags += -I$(PROJ_OBJ_DIR)/.. -I$(PROJ_SRC_DIR)/..
-
-include $(LEVEL)/Makefile.common
+++ /dev/null
-//===-- 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";
- }
-
- 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);
-}
tablegen(PPCGenSubtarget.inc -gen-subtarget)
add_llvm_target(PowerPCCodeGen
+ PPCAsmPrinter.cpp
PPCBranchSelector.cpp
PPCCodeEmitter.cpp
PPCHazardRecognizers.cpp
PPCGenInstrInfo.inc PPCGenDAGISel.inc \
PPCGenSubtarget.inc PPCGenCallingConv.inc
-DIRS = AsmPrinter TargetInfo
+DIRS = TargetInfo
include $(LEVEL)/Makefile.common
--- /dev/null
+//===-- 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";
+ }
+
+ 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);
+}
projects / oota-llvm.git / commitdiff