-//===-- PPCAsmPrinter.cpp - Print machine instrs to PowerPC assembly --------=//
+//===-- PPCAsmPrinter.cpp - Print machine instrs to PowerPC assembly ------===//
//
// The LLVM Compiler Infrastructure
//
#define DEBUG_TYPE "asmprinter"
#include "PPC.h"
-#include "PPCPredicates.h"
-#include "PPCTargetMachine.h"
+#include "InstPrinter/PPCInstPrinter.h"
+#include "MCTargetDesc/PPCMCExpr.h"
+#include "MCTargetDesc/PPCPredicates.h"
#include "PPCSubtarget.h"
-#include "llvm/Constants.h"
-#include "llvm/DerivedTypes.h"
-#include "llvm/Module.h"
+#include "PPCTargetMachine.h"
+#include "PPCTargetStreamer.h"
+#include "llvm/ADT/MapVector.h"
+#include "llvm/ADT/SmallString.h"
+#include "llvm/ADT/StringExtras.h"
#include "llvm/Assembly/Writer.h"
#include "llvm/CodeGen/AsmPrinter.h"
-#include "llvm/CodeGen/DwarfWriter.h"
-#include "llvm/CodeGen/MachineModuleInfo.h"
#include "llvm/CodeGen/MachineFunctionPass.h"
#include "llvm/CodeGen/MachineInstr.h"
#include "llvm/CodeGen/MachineInstrBuilder.h"
-#include "llvm/Support/Mangler.h"
-#include "llvm/Support/MathExtras.h"
+#include "llvm/CodeGen/MachineModuleInfoImpls.h"
+#include "llvm/CodeGen/TargetLoweringObjectFileImpl.h"
+#include "llvm/DebugInfo.h"
+#include "llvm/IR/Constants.h"
+#include "llvm/IR/DerivedTypes.h"
+#include "llvm/IR/Module.h"
+#include "llvm/MC/MCAsmInfo.h"
+#include "llvm/MC/MCContext.h"
+#include "llvm/MC/MCExpr.h"
+#include "llvm/MC/MCInst.h"
+#include "llvm/MC/MCInstBuilder.h"
+#include "llvm/MC/MCSectionELF.h"
+#include "llvm/MC/MCSectionMachO.h"
+#include "llvm/MC/MCStreamer.h"
+#include "llvm/MC/MCSymbol.h"
#include "llvm/Support/CommandLine.h"
#include "llvm/Support/Debug.h"
-#include "llvm/Support/Compiler.h"
-#include "llvm/Target/TargetAsmInfo.h"
-#include "llvm/Target/TargetRegisterInfo.h"
+#include "llvm/Support/ELF.h"
+#include "llvm/Support/ErrorHandling.h"
+#include "llvm/Support/MathExtras.h"
+#include "llvm/Support/TargetRegistry.h"
+#include "llvm/Support/raw_ostream.h"
+#include "llvm/Target/Mangler.h"
#include "llvm/Target/TargetInstrInfo.h"
#include "llvm/Target/TargetOptions.h"
-#include "llvm/ADT/Statistic.h"
-#include "llvm/ADT/StringExtras.h"
-#include <set>
+#include "llvm/Target/TargetRegisterInfo.h"
using namespace llvm;
-STATISTIC(EmittedInsts, "Number of machine instrs printed");
-
namespace {
- struct VISIBILITY_HIDDEN PPCAsmPrinter : public AsmPrinter {
- std::set<std::string> FnStubs, GVStubs;
+ class PPCAsmPrinter : public AsmPrinter {
+ protected:
+ MapVector<MCSymbol*, MCSymbol*> TOC;
const PPCSubtarget &Subtarget;
-
- PPCAsmPrinter(std::ostream &O, TargetMachine &TM, const TargetAsmInfo *T)
- : AsmPrinter(O, TM, T), Subtarget(TM.getSubtarget<PPCSubtarget>()) {
- }
+ uint64_t TOCLabelID;
+ public:
+ explicit PPCAsmPrinter(TargetMachine &TM, MCStreamer &Streamer)
+ : AsmPrinter(TM, Streamer),
+ Subtarget(TM.getSubtarget<PPCSubtarget>()), TOCLabelID(0) {}
virtual const char *getPassName() const {
return "PowerPC Assembly Printer";
}
- PPCTargetMachine &getTM() {
- return static_cast<PPCTargetMachine&>(TM);
- }
-
- unsigned enumRegToMachineReg(unsigned enumReg) {
- switch (enumReg) {
- default: assert(0 && "Unhandled register!"); break;
- 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;
- }
- abort();
- }
+ MCSymbol *lookUpOrCreateTOCEntry(MCSymbol *Sym);
- /// 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.
- bool printInstruction(const MachineInstr *MI);
+ virtual void EmitInstruction(const MachineInstr *MI);
- void printMachineInstruction(const MachineInstr *MI);
- void printOp(const MachineOperand &MO);
-
- /// 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) {
- 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 = TM.getRegisterInfo()->get(RegNo).AsmName;
- // 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);
- void printOperand(const MachineInstr *MI, unsigned OpNo) {
- const MachineOperand &MO = MI->getOperand(OpNo);
- if (MO.isRegister()) {
- printRegister(MO, false);
- } else if (MO.isImmediate()) {
- O << MO.getImm();
- } else {
- printOp(MO);
- }
- }
-
bool PrintAsmOperand(const MachineInstr *MI, unsigned OpNo,
- unsigned AsmVariant, const char *ExtraCode);
+ unsigned AsmVariant, const char *ExtraCode,
+ raw_ostream &O);
bool PrintAsmMemoryOperand(const MachineInstr *MI, unsigned OpNo,
- unsigned AsmVariant, const char *ExtraCode);
-
-
- void printS5ImmOperand(const MachineInstr *MI, unsigned OpNo) {
- char value = MI->getOperand(OpNo).getImm();
- value = (value << (32-5)) >> (32-5);
- O << (int)value;
- }
- void printU5ImmOperand(const MachineInstr *MI, unsigned OpNo) {
- unsigned char value = MI->getOperand(OpNo).getImm();
- assert(value <= 31 && "Invalid u5imm argument!");
- O << (unsigned int)value;
- }
- void printU6ImmOperand(const MachineInstr *MI, unsigned OpNo) {
- unsigned char value = MI->getOperand(OpNo).getImm();
- assert(value <= 63 && "Invalid u6imm argument!");
- O << (unsigned int)value;
- }
- void printS16ImmOperand(const MachineInstr *MI, unsigned OpNo) {
- O << (short)MI->getOperand(OpNo).getImm();
- }
- void printU16ImmOperand(const MachineInstr *MI, unsigned OpNo) {
- O << (unsigned short)MI->getOperand(OpNo).getImm();
- }
- void printS16X4ImmOperand(const MachineInstr *MI, unsigned OpNo) {
- if (MI->getOperand(OpNo).isImmediate()) {
- O << (short)(MI->getOperand(OpNo).getImm()*4);
- } else {
- O << "lo16(";
- printOp(MI->getOperand(OpNo));
- if (TM.getRelocationModel() == Reloc::PIC_)
- O << "-\"L" << getFunctionNumber() << "$pb\")";
- else
- O << ')';
- }
- }
- void printBranchOperand(const MachineInstr *MI, unsigned OpNo) {
- // Branches can take an immediate operand. This is used by the branch
- // selection pass to print $+8, an eight byte displacement from the PC.
- if (MI->getOperand(OpNo).isImmediate()) {
- O << "$+" << MI->getOperand(OpNo).getImm()*4;
- } else {
- printOp(MI->getOperand(OpNo));
- }
- }
- void printCallOperand(const MachineInstr *MI, unsigned OpNo) {
- const MachineOperand &MO = MI->getOperand(OpNo);
- if (TM.getRelocationModel() != Reloc::Static) {
- if (MO.getType() == MachineOperand::MO_GlobalAddress) {
- GlobalValue *GV = MO.getGlobal();
- if (((GV->isDeclaration() || GV->hasWeakLinkage() ||
- GV->hasLinkOnceLinkage() || GV->hasCommonLinkage()))) {
- // Dynamically-resolved functions need a stub for the function.
- std::string Name = Mang->getValueName(GV);
- FnStubs.insert(Name);
- O << "L" << Name << "$stub";
- if (GV->hasExternalWeakLinkage())
- ExtWeakSymbols.insert(GV);
- return;
- }
- }
- if (MO.getType() == MachineOperand::MO_ExternalSymbol) {
- std::string Name(TAI->getGlobalPrefix()); Name += MO.getSymbolName();
- FnStubs.insert(Name);
- O << "L" << Name << "$stub";
- return;
- }
- }
-
- printOp(MI->getOperand(OpNo));
- }
- void printAbsAddrOperand(const MachineInstr *MI, unsigned OpNo) {
- O << (int)MI->getOperand(OpNo).getImm()*4;
- }
- void printPICLabel(const MachineInstr *MI, unsigned OpNo) {
- O << "\"L" << getFunctionNumber() << "$pb\"\n";
- O << "\"L" << getFunctionNumber() << "$pb\":";
- }
- void printSymbolHi(const MachineInstr *MI, unsigned OpNo) {
- if (MI->getOperand(OpNo).isImmediate()) {
- printS16ImmOperand(MI, OpNo);
- } else {
- if (Subtarget.isDarwin()) O << "ha16(";
- printOp(MI->getOperand(OpNo));
- if (TM.getRelocationModel() == Reloc::PIC_)
- O << "-\"L" << getFunctionNumber() << "$pb\"";
- if (Subtarget.isDarwin())
- O << ')';
- else
- O << "@ha";
- }
- }
- void printSymbolLo(const MachineInstr *MI, unsigned OpNo) {
- if (MI->getOperand(OpNo).isImmediate()) {
- printS16ImmOperand(MI, OpNo);
- } else {
- if (Subtarget.isDarwin()) O << "lo16(";
- printOp(MI->getOperand(OpNo));
- if (TM.getRelocationModel() == Reloc::PIC_)
- O << "-\"L" << getFunctionNumber() << "$pb\"";
- if (Subtarget.isDarwin())
- O << ')';
- else
- O << "@l";
- }
- }
- void printcrbitm(const MachineInstr *MI, unsigned OpNo) {
- 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) {
- printSymbolLo(MI, OpNo);
- O << '(';
- if (MI->getOperand(OpNo+1).isRegister() &&
- MI->getOperand(OpNo+1).getReg() == PPC::R0)
- O << "0";
- else
- printOperand(MI, OpNo+1);
- O << ')';
- }
- void printMemRegImmShifted(const MachineInstr *MI, unsigned OpNo) {
- if (MI->getOperand(OpNo).isImmediate())
- printS16X4ImmOperand(MI, OpNo);
- else
- printSymbolLo(MI, OpNo);
- O << '(';
- if (MI->getOperand(OpNo+1).isRegister() &&
- MI->getOperand(OpNo+1).getReg() == PPC::R0)
- O << "0";
- else
- printOperand(MI, OpNo+1);
- O << ')';
- }
-
- void printMemRegReg(const MachineInstr *MI, unsigned OpNo) {
- // 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 << ", ";
- printOperand(MI, OpNo+1);
- }
-
- void printPredicateOperand(const MachineInstr *MI, unsigned OpNo,
- const char *Modifier);
-
- virtual bool runOnMachineFunction(MachineFunction &F) = 0;
- virtual bool doFinalization(Module &M) = 0;
-
- virtual void EmitExternalGlobal(const GlobalVariable *GV);
+ unsigned AsmVariant, const char *ExtraCode,
+ raw_ostream &O);
};
- /// LinuxAsmPrinter - PowerPC assembly printer, customized for Linux
- struct VISIBILITY_HIDDEN LinuxAsmPrinter : public PPCAsmPrinter {
-
- DwarfWriter DW;
-
- LinuxAsmPrinter(std::ostream &O, PPCTargetMachine &TM,
- const TargetAsmInfo *T)
- : PPCAsmPrinter(O, TM, T), DW(O, this, T) {
- }
+ /// 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 runOnMachineFunction(MachineFunction &F);
- bool doInitialization(Module &M);
bool doFinalization(Module &M);
-
- void getAnalysisUsage(AnalysisUsage &AU) const {
- AU.setPreservesAll();
- AU.addRequired<MachineModuleInfo>();
- PPCAsmPrinter::getAnalysisUsage(AU);
- }
- /// getSectionForFunction - Return the section that we should emit the
- /// specified function body into.
- virtual std::string getSectionForFunction(const Function &F) const;
- };
+ virtual void EmitFunctionEntryLabel();
- /// DarwinAsmPrinter - PowerPC assembly printer, customized for Darwin/Mac OS
- /// X
- struct VISIBILITY_HIDDEN DarwinAsmPrinter : public PPCAsmPrinter {
-
- DwarfWriter DW;
- MachineModuleInfo *MMI;
+ void EmitFunctionBodyEnd();
+ };
- DarwinAsmPrinter(std::ostream &O, PPCTargetMachine &TM,
- const TargetAsmInfo *T)
- : PPCAsmPrinter(O, TM, T), DW(O, this, T), MMI(0) {
- }
+ /// 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 runOnMachineFunction(MachineFunction &F);
- bool doInitialization(Module &M);
+
bool doFinalization(Module &M);
-
- void getAnalysisUsage(AnalysisUsage &AU) const {
- AU.setPreservesAll();
- AU.addRequired<MachineModuleInfo>();
- PPCAsmPrinter::getAnalysisUsage(AU);
- }
+ void EmitStartOfAsmFile(Module &M);
- /// getSectionForFunction - Return the section that we should emit the
- /// specified function body into.
- virtual std::string getSectionForFunction(const Function &F) const;
+ void EmitFunctionStubs(const MachineModuleInfoMachO::SymbolListTy &Stubs);
};
} // end of anonymous namespace
-// Include the auto-generated portion of the assembly writer
-#include "PPCGenAsmWriter.inc"
+/// stripRegisterPrefix - This method strips the character prefix from a
+/// register name so that only the number is left. Used by for linux asm.
+static 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;
+}
-void PPCAsmPrinter::printOp(const MachineOperand &MO) {
+void PPCAsmPrinter::printOperand(const MachineInstr *MI, unsigned OpNo,
+ raw_ostream &O) {
+ const DataLayout *DL = TM.getDataLayout();
+ const MachineOperand &MO = MI->getOperand(OpNo);
+
switch (MO.getType()) {
+ case MachineOperand::MO_Register: {
+ const char *RegName = PPCInstPrinter::getRegisterName(MO.getReg());
+ // 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;
+ return;
+ }
case MachineOperand::MO_Immediate:
- cerr << "printOp() does not handle immediate values\n";
- abort();
+ O << MO.getImm();
return;
case MachineOperand::MO_MachineBasicBlock:
- printBasicBlockLabel(MO.getMBB());
- return;
- case MachineOperand::MO_JumpTableIndex:
- O << TAI->getPrivateGlobalPrefix() << "JTI" << getFunctionNumber()
- << '_' << MO.getIndex();
- // FIXME: PIC relocation model
+ O << *MO.getMBB()->getSymbol();
return;
case MachineOperand::MO_ConstantPoolIndex:
- O << TAI->getPrivateGlobalPrefix() << "CPI" << getFunctionNumber()
+ O << DL->getPrivateGlobalPrefix() << "CPI" << getFunctionNumber()
<< '_' << MO.getIndex();
return;
- case MachineOperand::MO_ExternalSymbol:
- // Computing the address of an external symbol, not calling it.
- if (TM.getRelocationModel() != Reloc::Static) {
- std::string Name(TAI->getGlobalPrefix()); Name += MO.getSymbolName();
- GVStubs.insert(Name);
- O << "L" << Name << "$non_lazy_ptr";
- return;
- }
- O << TAI->getGlobalPrefix() << MO.getSymbolName();
+ case MachineOperand::MO_BlockAddress:
+ O << *GetBlockAddressSymbol(MO.getBlockAddress());
return;
case MachineOperand::MO_GlobalAddress: {
// Computing the address of a global symbol, not calling it.
- GlobalValue *GV = MO.getGlobal();
- std::string Name = Mang->getValueName(GV);
+ const GlobalValue *GV = MO.getGlobal();
+ MCSymbol *SymToPrint;
// External or weakly linked global variables need non-lazily-resolved stubs
- if (TM.getRelocationModel() != Reloc::Static) {
- if (((GV->isDeclaration() || GV->hasWeakLinkage() ||
- GV->hasLinkOnceLinkage() || GV->hasCommonLinkage()))) {
- GVStubs.insert(Name);
- O << "L" << Name << "$non_lazy_ptr";
- if (GV->hasExternalWeakLinkage())
- ExtWeakSymbols.insert(GV);
- return;
+ if (TM.getRelocationModel() != Reloc::Static &&
+ (GV->isDeclaration() || GV->isWeakForLinker())) {
+ if (!GV->hasHiddenVisibility()) {
+ SymToPrint = getSymbolWithGlobalValueBase(GV, "$non_lazy_ptr");
+ MachineModuleInfoImpl::StubValueTy &StubSym =
+ MMI->getObjFileInfo<MachineModuleInfoMachO>()
+ .getGVStubEntry(SymToPrint);
+ if (StubSym.getPointer() == 0)
+ StubSym = MachineModuleInfoImpl::
+ StubValueTy(getSymbol(GV), !GV->hasInternalLinkage());
+ } else if (GV->isDeclaration() || GV->hasCommonLinkage() ||
+ GV->hasAvailableExternallyLinkage()) {
+ SymToPrint = getSymbolWithGlobalValueBase(GV, "$non_lazy_ptr");
+
+ MachineModuleInfoImpl::StubValueTy &StubSym =
+ MMI->getObjFileInfo<MachineModuleInfoMachO>().
+ getHiddenGVStubEntry(SymToPrint);
+ if (StubSym.getPointer() == 0)
+ StubSym = MachineModuleInfoImpl::
+ StubValueTy(getSymbol(GV), !GV->hasInternalLinkage());
+ } else {
+ SymToPrint = getSymbol(GV);
}
+ } else {
+ SymToPrint = getSymbol(GV);
}
- O << Name;
-
- if (MO.getOffset() > 0)
- O << "+" << MO.getOffset();
- else if (MO.getOffset() < 0)
- O << MO.getOffset();
- if (GV->hasExternalWeakLinkage())
- ExtWeakSymbols.insert(GV);
+ O << *SymToPrint;
+
+ printOffset(MO.getOffset(), O);
return;
}
}
}
-/// EmitExternalGlobal - In this case we need to use the indirect symbol.
-///
-void PPCAsmPrinter::EmitExternalGlobal(const GlobalVariable *GV) {
- std::string Name = getGlobalLinkName(GV);
- if (TM.getRelocationModel() != Reloc::Static) {
- GVStubs.insert(Name);
- O << "L" << Name << "$non_lazy_ptr";
- return;
- }
- O << Name;
-}
-
/// PrintAsmOperand - Print out an operand for an inline asm expression.
///
bool PPCAsmPrinter::PrintAsmOperand(const MachineInstr *MI, unsigned OpNo,
- unsigned AsmVariant,
- const char *ExtraCode) {
+ unsigned AsmVariant,
+ const char *ExtraCode, raw_ostream &O) {
// Does this asm operand have a single letter operand modifier?
if (ExtraCode && ExtraCode[0]) {
if (ExtraCode[1] != 0) return true; // Unknown modifier.
-
+
switch (ExtraCode[0]) {
- default: return true; // Unknown modifier.
+ default:
+ // See if this is a generic print operand
+ return AsmPrinter::PrintAsmOperand(MI, OpNo, AsmVariant, ExtraCode, O);
case 'c': // Don't print "$" before a global var name or constant.
- // PPC never has a prefix.
- printOperand(MI, OpNo);
- return false;
- case 'L': // Write second word of DImode reference.
+ break; // PPC never has a prefix.
+ case 'L': // Write second word of DImode reference.
// Verify that this operand has two consecutive registers.
- if (!MI->getOperand(OpNo).isRegister() ||
+ if (!MI->getOperand(OpNo).isReg() ||
OpNo+1 == MI->getNumOperands() ||
- !MI->getOperand(OpNo+1).isRegister())
+ !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).isImmediate())
+ if (MI->getOperand(OpNo).isImm())
O << "i";
return false;
}
}
-
- printOperand(MI, OpNo);
+
+ 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) {
- if (ExtraCode && ExtraCode[0])
- return true; // Unknown modifier.
- if (MI->getOperand(OpNo).isRegister())
- printMemRegReg(MI, OpNo);
- else
- printMemRegImm(MI, OpNo);
+ unsigned AsmVariant,
+ const char *ExtraCode,
+ raw_ostream &O) {
+ if (ExtraCode && ExtraCode[0]) {
+ if (ExtraCode[1] != 0) return true; // Unknown modifier.
+
+ switch (ExtraCode[0]) {
+ default: return true; // Unknown modifier.
+ case 'y': // A memory reference for an X-form instruction
+ {
+ const char *RegName = "r0";
+ if (!Subtarget.isDarwin()) RegName = stripRegisterPrefix(RegName);
+ O << RegName << ", ";
+ printOperand(MI, OpNo, O);
+ return false;
+ }
+ }
+ }
+
+ assert(MI->getOperand(OpNo).isReg());
+ O << "0(";
+ printOperand(MI, OpNo, O);
+ O << ")";
return false;
}
-void PPCAsmPrinter::printPredicateOperand(const MachineInstr *MI, unsigned OpNo,
- 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;
+
+/// lookUpOrCreateTOCEntry -- Given a symbol, look up whether a TOC entry
+/// exists for it. If not, create one. Then return a symbol that references
+/// the TOC entry.
+MCSymbol *PPCAsmPrinter::lookUpOrCreateTOCEntry(MCSymbol *Sym) {
+ const DataLayout *DL = TM.getDataLayout();
+ MCSymbol *&TOCEntry = TOC[Sym];
+
+ // To avoid name clash check if the name already exists.
+ while (TOCEntry == 0) {
+ if (OutContext.LookupSymbol(Twine(DL->getPrivateGlobalPrefix()) +
+ "C" + Twine(TOCLabelID++)) == 0) {
+ TOCEntry = GetTempSymbol("C", TOCLabelID);
}
-
- } 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);
}
+
+ return TOCEntry;
}
-/// printMachineInstruction -- Print out a single PowerPC MI in Darwin syntax to
+/// EmitInstruction -- Print out a single PowerPC MI in Darwin syntax to
/// the current output stream.
///
-void PPCAsmPrinter::printMachineInstruction(const MachineInstr *MI) {
- ++EmittedInsts;
-
- // Check for slwi/srwi mnemonics.
- if (MI->getOpcode() == PPC::RLWINM) {
- bool FoundMnemonic = false;
- unsigned char SH = MI->getOperand(2).getImm();
- unsigned char MB = MI->getOperand(3).getImm();
- unsigned char ME = MI->getOperand(4).getImm();
- if (SH <= 31 && MB == 0 && ME == (31-SH)) {
- O << "\tslwi "; FoundMnemonic = true;
+void PPCAsmPrinter::EmitInstruction(const MachineInstr *MI) {
+ MCInst TmpInst;
+ bool isPPC64 = Subtarget.isPPC64();
+
+ // Lower multi-instruction pseudo operations.
+ switch (MI->getOpcode()) {
+ default: break;
+ case TargetOpcode::DBG_VALUE:
+ llvm_unreachable("Should be handled target independently");
+ case PPC::MovePCtoLR:
+ case PPC::MovePCtoLR8: {
+ // Transform %LR = MovePCtoLR
+ // Into this, where the label is the PIC base:
+ // bl L1$pb
+ // L1$pb:
+ MCSymbol *PICBase = MF->getPICBaseSymbol();
+
+ // Emit the 'bl'.
+ OutStreamer.EmitInstruction(MCInstBuilder(PPC::BL)
+ // FIXME: We would like an efficient form for this, so we don't have to do
+ // a lot of extra uniquing.
+ .addExpr(MCSymbolRefExpr::Create(PICBase, OutContext)));
+
+ // Emit the label.
+ OutStreamer.EmitLabel(PICBase);
+ return;
+ }
+ case PPC::LDtocJTI:
+ case PPC::LDtocCPT:
+ case PPC::LDtoc: {
+ // Transform %X3 = LDtoc <ga:@min1>, %X2
+ LowerPPCMachineInstrToMCInst(MI, TmpInst, *this, Subtarget.isDarwin());
+
+ // Change the opcode to LD, and the global address operand to be a
+ // reference to the TOC entry we will synthesize later.
+ TmpInst.setOpcode(PPC::LD);
+ const MachineOperand &MO = MI->getOperand(1);
+
+ // Map symbol -> label of TOC entry
+ assert(MO.isGlobal() || MO.isCPI() || MO.isJTI());
+ MCSymbol *MOSymbol = 0;
+ if (MO.isGlobal())
+ MOSymbol = getSymbol(MO.getGlobal());
+ else if (MO.isCPI())
+ MOSymbol = GetCPISymbol(MO.getIndex());
+ else if (MO.isJTI())
+ MOSymbol = GetJTISymbol(MO.getIndex());
+
+ MCSymbol *TOCEntry = lookUpOrCreateTOCEntry(MOSymbol);
+
+ const MCExpr *Exp =
+ MCSymbolRefExpr::Create(TOCEntry, MCSymbolRefExpr::VK_PPC_TOC,
+ OutContext);
+ TmpInst.getOperand(1) = MCOperand::CreateExpr(Exp);
+ OutStreamer.EmitInstruction(TmpInst);
+ return;
+ }
+
+ case PPC::ADDIStocHA: {
+ // Transform %Xd = ADDIStocHA %X2, <ga:@sym>
+ LowerPPCMachineInstrToMCInst(MI, TmpInst, *this, Subtarget.isDarwin());
+
+ // Change the opcode to ADDIS8. If the global address is external,
+ // has common linkage, is a function address, or is a jump table
+ // address, then generate a TOC entry and reference that. Otherwise
+ // reference the symbol directly.
+ TmpInst.setOpcode(PPC::ADDIS8);
+ const MachineOperand &MO = MI->getOperand(2);
+ assert((MO.isGlobal() || MO.isCPI() || MO.isJTI()) &&
+ "Invalid operand for ADDIStocHA!");
+ MCSymbol *MOSymbol = 0;
+ bool IsExternal = false;
+ bool IsFunction = false;
+ bool IsCommon = false;
+ bool IsAvailExt = false;
+
+ if (MO.isGlobal()) {
+ const GlobalValue *GValue = MO.getGlobal();
+ const GlobalAlias *GAlias = dyn_cast<GlobalAlias>(GValue);
+ const GlobalValue *RealGValue = GAlias ?
+ GAlias->resolveAliasedGlobal(false) : GValue;
+ MOSymbol = getSymbol(RealGValue);
+ const GlobalVariable *GVar = dyn_cast<GlobalVariable>(RealGValue);
+ IsExternal = GVar && !GVar->hasInitializer();
+ IsCommon = GVar && RealGValue->hasCommonLinkage();
+ IsFunction = !GVar;
+ IsAvailExt = GVar && RealGValue->hasAvailableExternallyLinkage();
+ } else if (MO.isCPI())
+ MOSymbol = GetCPISymbol(MO.getIndex());
+ else if (MO.isJTI())
+ MOSymbol = GetJTISymbol(MO.getIndex());
+
+ if (IsExternal || IsFunction || IsCommon || IsAvailExt || MO.isJTI() ||
+ TM.getCodeModel() == CodeModel::Large)
+ MOSymbol = lookUpOrCreateTOCEntry(MOSymbol);
+
+ const MCExpr *Exp =
+ MCSymbolRefExpr::Create(MOSymbol, MCSymbolRefExpr::VK_PPC_TOC_HA,
+ OutContext);
+ TmpInst.getOperand(2) = MCOperand::CreateExpr(Exp);
+ OutStreamer.EmitInstruction(TmpInst);
+ return;
+ }
+ case PPC::LDtocL: {
+ // Transform %Xd = LDtocL <ga:@sym>, %Xs
+ LowerPPCMachineInstrToMCInst(MI, TmpInst, *this, Subtarget.isDarwin());
+
+ // Change the opcode to LD. If the global address is external, has
+ // common linkage, or is a jump table address, then reference the
+ // associated TOC entry. Otherwise reference the symbol directly.
+ TmpInst.setOpcode(PPC::LD);
+ const MachineOperand &MO = MI->getOperand(1);
+ assert((MO.isGlobal() || MO.isJTI() || MO.isCPI()) &&
+ "Invalid operand for LDtocL!");
+ MCSymbol *MOSymbol = 0;
+
+ if (MO.isJTI())
+ MOSymbol = lookUpOrCreateTOCEntry(GetJTISymbol(MO.getIndex()));
+ else if (MO.isCPI()) {
+ MOSymbol = GetCPISymbol(MO.getIndex());
+ if (TM.getCodeModel() == CodeModel::Large)
+ MOSymbol = lookUpOrCreateTOCEntry(MOSymbol);
}
- if (SH <= 31 && MB == (32-SH) && ME == 31) {
- O << "\tsrwi "; FoundMnemonic = true;
- SH = 32-SH;
+ else if (MO.isGlobal()) {
+ const GlobalValue *GValue = MO.getGlobal();
+ const GlobalAlias *GAlias = dyn_cast<GlobalAlias>(GValue);
+ const GlobalValue *RealGValue = GAlias ?
+ GAlias->resolveAliasedGlobal(false) : GValue;
+ MOSymbol = getSymbol(RealGValue);
+ const GlobalVariable *GVar = dyn_cast<GlobalVariable>(RealGValue);
+
+ if (!GVar || !GVar->hasInitializer() || RealGValue->hasCommonLinkage() ||
+ RealGValue->hasAvailableExternallyLinkage() ||
+ TM.getCodeModel() == CodeModel::Large)
+ MOSymbol = lookUpOrCreateTOCEntry(MOSymbol);
}
- if (FoundMnemonic) {
- printOperand(MI, 0);
- O << ", ";
- printOperand(MI, 1);
- O << ", " << (unsigned int)SH << "\n";
+
+ const MCExpr *Exp =
+ MCSymbolRefExpr::Create(MOSymbol, MCSymbolRefExpr::VK_PPC_TOC_LO,
+ OutContext);
+ TmpInst.getOperand(1) = MCOperand::CreateExpr(Exp);
+ OutStreamer.EmitInstruction(TmpInst);
+ return;
+ }
+ case PPC::ADDItocL: {
+ // Transform %Xd = ADDItocL %Xs, <ga:@sym>
+ LowerPPCMachineInstrToMCInst(MI, TmpInst, *this, Subtarget.isDarwin());
+
+ // Change the opcode to ADDI8. If the global address is external, then
+ // generate a TOC entry and reference that. Otherwise reference the
+ // symbol directly.
+ TmpInst.setOpcode(PPC::ADDI8);
+ const MachineOperand &MO = MI->getOperand(2);
+ assert((MO.isGlobal() || MO.isCPI()) && "Invalid operand for ADDItocL");
+ MCSymbol *MOSymbol = 0;
+ bool IsExternal = false;
+ bool IsFunction = false;
+
+ if (MO.isGlobal()) {
+ const GlobalValue *GValue = MO.getGlobal();
+ const GlobalAlias *GAlias = dyn_cast<GlobalAlias>(GValue);
+ const GlobalValue *RealGValue = GAlias ?
+ GAlias->resolveAliasedGlobal(false) : GValue;
+ MOSymbol = getSymbol(RealGValue);
+ const GlobalVariable *GVar = dyn_cast<GlobalVariable>(RealGValue);
+ IsExternal = GVar && !GVar->hasInitializer();
+ IsFunction = !GVar;
+ } else if (MO.isCPI())
+ MOSymbol = GetCPISymbol(MO.getIndex());
+
+ if (IsFunction || IsExternal || TM.getCodeModel() == CodeModel::Large)
+ MOSymbol = lookUpOrCreateTOCEntry(MOSymbol);
+
+ const MCExpr *Exp =
+ MCSymbolRefExpr::Create(MOSymbol, MCSymbolRefExpr::VK_PPC_TOC_LO,
+ OutContext);
+ TmpInst.getOperand(2) = MCOperand::CreateExpr(Exp);
+ OutStreamer.EmitInstruction(TmpInst);
+ return;
+ }
+ case PPC::ADDISgotTprelHA: {
+ // Transform: %Xd = ADDISgotTprelHA %X2, <ga:@sym>
+ // Into: %Xd = ADDIS8 %X2, sym@got@tlsgd@ha
+ assert(Subtarget.isPPC64() && "Not supported for 32-bit PowerPC");
+ const MachineOperand &MO = MI->getOperand(2);
+ const GlobalValue *GValue = MO.getGlobal();
+ MCSymbol *MOSymbol = getSymbol(GValue);
+ const MCExpr *SymGotTprel =
+ MCSymbolRefExpr::Create(MOSymbol, MCSymbolRefExpr::VK_PPC_GOT_TPREL_HA,
+ OutContext);
+ OutStreamer.EmitInstruction(MCInstBuilder(PPC::ADDIS8)
+ .addReg(MI->getOperand(0).getReg())
+ .addReg(PPC::X2)
+ .addExpr(SymGotTprel));
+ return;
+ }
+ case PPC::LDgotTprelL:
+ case PPC::LDgotTprelL32: {
+ // Transform %Xd = LDgotTprelL <ga:@sym>, %Xs
+ LowerPPCMachineInstrToMCInst(MI, TmpInst, *this, Subtarget.isDarwin());
+
+ // Change the opcode to LD.
+ TmpInst.setOpcode(isPPC64 ? PPC::LD : PPC::LWZ);
+ const MachineOperand &MO = MI->getOperand(1);
+ const GlobalValue *GValue = MO.getGlobal();
+ MCSymbol *MOSymbol = getSymbol(GValue);
+ const MCExpr *Exp =
+ MCSymbolRefExpr::Create(MOSymbol, MCSymbolRefExpr::VK_PPC_GOT_TPREL_LO,
+ OutContext);
+ TmpInst.getOperand(1) = MCOperand::CreateExpr(Exp);
+ OutStreamer.EmitInstruction(TmpInst);
+ return;
+ }
+
+ case PPC::PPC32GOT: {
+ MCSymbol *GOTSymbol = OutContext.GetOrCreateSymbol(StringRef("_GLOBAL_OFFSET_TABLE_"));
+ const MCExpr *SymGotTlsL =
+ MCSymbolRefExpr::Create(GOTSymbol, MCSymbolRefExpr::VK_PPC_LO,
+ OutContext);
+ const MCExpr *SymGotTlsHA =
+ MCSymbolRefExpr::Create(GOTSymbol, MCSymbolRefExpr::VK_PPC_HA,
+ OutContext);
+ OutStreamer.EmitInstruction(MCInstBuilder(PPC::LI)
+ .addReg(MI->getOperand(0).getReg())
+ .addExpr(SymGotTlsL));
+ OutStreamer.EmitInstruction(MCInstBuilder(PPC::ADDIS)
+ .addReg(MI->getOperand(0).getReg())
+ .addReg(MI->getOperand(0).getReg())
+ .addExpr(SymGotTlsHA));
+ return;
+ }
+ case PPC::ADDIStlsgdHA: {
+ // Transform: %Xd = ADDIStlsgdHA %X2, <ga:@sym>
+ // Into: %Xd = ADDIS8 %X2, sym@got@tlsgd@ha
+ assert(Subtarget.isPPC64() && "Not supported for 32-bit PowerPC");
+ const MachineOperand &MO = MI->getOperand(2);
+ const GlobalValue *GValue = MO.getGlobal();
+ MCSymbol *MOSymbol = getSymbol(GValue);
+ const MCExpr *SymGotTlsGD =
+ MCSymbolRefExpr::Create(MOSymbol, MCSymbolRefExpr::VK_PPC_GOT_TLSGD_HA,
+ OutContext);
+ OutStreamer.EmitInstruction(MCInstBuilder(PPC::ADDIS8)
+ .addReg(MI->getOperand(0).getReg())
+ .addReg(PPC::X2)
+ .addExpr(SymGotTlsGD));
+ return;
+ }
+ case PPC::ADDItlsgdL: {
+ // Transform: %Xd = ADDItlsgdL %Xs, <ga:@sym>
+ // Into: %Xd = ADDI8 %Xs, sym@got@tlsgd@l
+ assert(Subtarget.isPPC64() && "Not supported for 32-bit PowerPC");
+ const MachineOperand &MO = MI->getOperand(2);
+ const GlobalValue *GValue = MO.getGlobal();
+ MCSymbol *MOSymbol = getSymbol(GValue);
+ const MCExpr *SymGotTlsGD =
+ MCSymbolRefExpr::Create(MOSymbol, MCSymbolRefExpr::VK_PPC_GOT_TLSGD_LO,
+ OutContext);
+ OutStreamer.EmitInstruction(MCInstBuilder(PPC::ADDI8)
+ .addReg(MI->getOperand(0).getReg())
+ .addReg(MI->getOperand(1).getReg())
+ .addExpr(SymGotTlsGD));
+ return;
+ }
+ case PPC::GETtlsADDR: {
+ // Transform: %X3 = GETtlsADDR %X3, <ga:@sym>
+ // Into: BL8_NOP_TLS __tls_get_addr(sym@tlsgd)
+ assert(Subtarget.isPPC64() && "Not supported for 32-bit PowerPC");
+
+ StringRef Name = "__tls_get_addr";
+ MCSymbol *TlsGetAddr = OutContext.GetOrCreateSymbol(Name);
+ const MCSymbolRefExpr *TlsRef =
+ MCSymbolRefExpr::Create(TlsGetAddr, MCSymbolRefExpr::VK_None, OutContext);
+ const MachineOperand &MO = MI->getOperand(2);
+ const GlobalValue *GValue = MO.getGlobal();
+ MCSymbol *MOSymbol = getSymbol(GValue);
+ const MCExpr *SymVar =
+ MCSymbolRefExpr::Create(MOSymbol, MCSymbolRefExpr::VK_PPC_TLSGD,
+ OutContext);
+ OutStreamer.EmitInstruction(MCInstBuilder(PPC::BL8_NOP_TLS)
+ .addExpr(TlsRef)
+ .addExpr(SymVar));
+ return;
+ }
+ case PPC::ADDIStlsldHA: {
+ // Transform: %Xd = ADDIStlsldHA %X2, <ga:@sym>
+ // Into: %Xd = ADDIS8 %X2, sym@got@tlsld@ha
+ assert(Subtarget.isPPC64() && "Not supported for 32-bit PowerPC");
+ const MachineOperand &MO = MI->getOperand(2);
+ const GlobalValue *GValue = MO.getGlobal();
+ MCSymbol *MOSymbol = getSymbol(GValue);
+ const MCExpr *SymGotTlsLD =
+ MCSymbolRefExpr::Create(MOSymbol, MCSymbolRefExpr::VK_PPC_GOT_TLSLD_HA,
+ OutContext);
+ OutStreamer.EmitInstruction(MCInstBuilder(PPC::ADDIS8)
+ .addReg(MI->getOperand(0).getReg())
+ .addReg(PPC::X2)
+ .addExpr(SymGotTlsLD));
+ return;
+ }
+ case PPC::ADDItlsldL: {
+ // Transform: %Xd = ADDItlsldL %Xs, <ga:@sym>
+ // Into: %Xd = ADDI8 %Xs, sym@got@tlsld@l
+ assert(Subtarget.isPPC64() && "Not supported for 32-bit PowerPC");
+ const MachineOperand &MO = MI->getOperand(2);
+ const GlobalValue *GValue = MO.getGlobal();
+ MCSymbol *MOSymbol = getSymbol(GValue);
+ const MCExpr *SymGotTlsLD =
+ MCSymbolRefExpr::Create(MOSymbol, MCSymbolRefExpr::VK_PPC_GOT_TLSLD_LO,
+ OutContext);
+ OutStreamer.EmitInstruction(MCInstBuilder(PPC::ADDI8)
+ .addReg(MI->getOperand(0).getReg())
+ .addReg(MI->getOperand(1).getReg())
+ .addExpr(SymGotTlsLD));
+ return;
+ }
+ case PPC::GETtlsldADDR: {
+ // Transform: %X3 = GETtlsldADDR %X3, <ga:@sym>
+ // Into: BL8_NOP_TLS __tls_get_addr(sym@tlsld)
+ assert(Subtarget.isPPC64() && "Not supported for 32-bit PowerPC");
+
+ StringRef Name = "__tls_get_addr";
+ MCSymbol *TlsGetAddr = OutContext.GetOrCreateSymbol(Name);
+ const MCSymbolRefExpr *TlsRef =
+ MCSymbolRefExpr::Create(TlsGetAddr, MCSymbolRefExpr::VK_None, OutContext);
+ const MachineOperand &MO = MI->getOperand(2);
+ const GlobalValue *GValue = MO.getGlobal();
+ MCSymbol *MOSymbol = getSymbol(GValue);
+ const MCExpr *SymVar =
+ MCSymbolRefExpr::Create(MOSymbol, MCSymbolRefExpr::VK_PPC_TLSLD,
+ OutContext);
+ OutStreamer.EmitInstruction(MCInstBuilder(PPC::BL8_NOP_TLS)
+ .addExpr(TlsRef)
+ .addExpr(SymVar));
+ return;
+ }
+ case PPC::ADDISdtprelHA: {
+ // Transform: %Xd = ADDISdtprelHA %X3, <ga:@sym>
+ // Into: %Xd = ADDIS8 %X3, sym@dtprel@ha
+ assert(Subtarget.isPPC64() && "Not supported for 32-bit PowerPC");
+ const MachineOperand &MO = MI->getOperand(2);
+ const GlobalValue *GValue = MO.getGlobal();
+ MCSymbol *MOSymbol = getSymbol(GValue);
+ const MCExpr *SymDtprel =
+ MCSymbolRefExpr::Create(MOSymbol, MCSymbolRefExpr::VK_PPC_DTPREL_HA,
+ OutContext);
+ OutStreamer.EmitInstruction(MCInstBuilder(PPC::ADDIS8)
+ .addReg(MI->getOperand(0).getReg())
+ .addReg(PPC::X3)
+ .addExpr(SymDtprel));
+ return;
+ }
+ case PPC::ADDIdtprelL: {
+ // Transform: %Xd = ADDIdtprelL %Xs, <ga:@sym>
+ // Into: %Xd = ADDI8 %Xs, sym@dtprel@l
+ assert(Subtarget.isPPC64() && "Not supported for 32-bit PowerPC");
+ const MachineOperand &MO = MI->getOperand(2);
+ const GlobalValue *GValue = MO.getGlobal();
+ MCSymbol *MOSymbol = getSymbol(GValue);
+ const MCExpr *SymDtprel =
+ MCSymbolRefExpr::Create(MOSymbol, MCSymbolRefExpr::VK_PPC_DTPREL_LO,
+ OutContext);
+ OutStreamer.EmitInstruction(MCInstBuilder(PPC::ADDI8)
+ .addReg(MI->getOperand(0).getReg())
+ .addReg(MI->getOperand(1).getReg())
+ .addExpr(SymDtprel));
+ return;
+ }
+ case PPC::MFOCRF:
+ case PPC::MFOCRF8:
+ if (!Subtarget.hasMFOCRF()) {
+ // Transform: %R3 = MFOCRF %CR7
+ // Into: %R3 = MFCR ;; cr7
+ unsigned NewOpcode =
+ MI->getOpcode() == PPC::MFOCRF ? PPC::MFCR : PPC::MFCR8;
+ OutStreamer.AddComment(PPCInstPrinter::
+ getRegisterName(MI->getOperand(1).getReg()));
+ OutStreamer.EmitInstruction(MCInstBuilder(NewOpcode)
+ .addReg(MI->getOperand(0).getReg()));
return;
}
- } else if (MI->getOpcode() == PPC::OR || MI->getOpcode() == PPC::OR8) {
- if (MI->getOperand(1).getReg() == MI->getOperand(2).getReg()) {
- O << "\tmr ";
- printOperand(MI, 0);
- O << ", ";
- printOperand(MI, 1);
- O << "\n";
+ break;
+ case PPC::MTOCRF:
+ case PPC::MTOCRF8:
+ if (!Subtarget.hasMFOCRF()) {
+ // Transform: %CR7 = MTOCRF %R3
+ // Into: MTCRF mask, %R3 ;; cr7
+ unsigned NewOpcode =
+ MI->getOpcode() == PPC::MTOCRF ? PPC::MTCRF : PPC::MTCRF8;
+ unsigned Mask = 0x80 >> OutContext.getRegisterInfo()
+ ->getEncodingValue(MI->getOperand(0).getReg());
+ OutStreamer.AddComment(PPCInstPrinter::
+ getRegisterName(MI->getOperand(0).getReg()));
+ OutStreamer.EmitInstruction(MCInstBuilder(NewOpcode)
+ .addImm(Mask)
+ .addReg(MI->getOperand(1).getReg()));
return;
}
- } else 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 << ", ";
- printOperand(MI, 1);
- O << ", " << (unsigned int)SH << "\n";
+ break;
+ case PPC::SYNC:
+ // In Book E sync is called msync, handle this special case here...
+ if (Subtarget.isBookE()) {
+ OutStreamer.EmitRawText(StringRef("\tmsync"));
return;
}
- }
-
- if (printInstruction(MI))
- return; // Printer was automatically generated
-
- assert(0 && "Unhandled instruction in asm writer!");
- abort();
- return;
-}
-
-/// runOnMachineFunction - This uses the printMachineInstruction()
-/// method to print assembly for each instruction.
-///
-bool LinuxAsmPrinter::runOnMachineFunction(MachineFunction &MF) {
- DW.SetModuleInfo(&getAnalysis<MachineModuleInfo>());
-
- SetupMachineFunction(MF);
- O << "\n\n";
-
- // Print out constants referenced by the function
- EmitConstantPool(MF.getConstantPool());
-
- // Print out labels for the function.
- const Function *F = MF.getFunction();
- SwitchToTextSection(getSectionForFunction(*F).c_str(), F);
-
- switch (F->getLinkage()) {
- default: assert(0 && "Unknown linkage type!");
- case Function::InternalLinkage: // Symbols default to internal.
break;
- case Function::ExternalLinkage:
- O << "\t.global\t" << CurrentFnName << '\n'
- << "\t.type\t" << CurrentFnName << ", @function\n";
- break;
- case Function::WeakLinkage:
- case Function::LinkOnceLinkage:
- O << "\t.global\t" << CurrentFnName << '\n';
- O << "\t.weak\t" << CurrentFnName << '\n';
+ case PPC::LD:
+ case PPC::STD:
+ case PPC::LWA_32:
+ case PPC::LWA: {
+ // Verify alignment is legal, so we don't create relocations
+ // that can't be supported.
+ // FIXME: This test is currently disabled for Darwin. The test
+ // suite shows a handful of test cases that fail this check for
+ // Darwin. Those need to be investigated before this sanity test
+ // can be enabled for those subtargets.
+ if (!Subtarget.isDarwin()) {
+ unsigned OpNum = (MI->getOpcode() == PPC::STD) ? 2 : 1;
+ const MachineOperand &MO = MI->getOperand(OpNum);
+ if (MO.isGlobal() && MO.getGlobal()->getAlignment() < 4)
+ llvm_unreachable("Global must be word-aligned for LD, STD, LWA!");
+ }
+ // Now process the instruction normally.
break;
}
-
- if (F->hasHiddenVisibility())
- if (const char *Directive = TAI->getHiddenDirective())
- O << Directive << CurrentFnName << "\n";
-
- EmitAlignment(2, F);
- O << CurrentFnName << ":\n";
-
- // Emit pre-function debug information.
- DW.BeginFunction(&MF);
-
- // Print out code for the function.
- for (MachineFunction::const_iterator I = MF.begin(), E = MF.end();
- I != E; ++I) {
- // Print a label for the basic block.
- if (I != MF.begin()) {
- printBasicBlockLabel(I, true, true);
- O << '\n';
- }
- for (MachineBasicBlock::const_iterator II = I->begin(), E = I->end();
- II != E; ++II) {
- // Print the assembly for the instruction.
- printMachineInstruction(II);
- }
}
- O << "\t.size\t" << CurrentFnName << ",.-" << CurrentFnName << "\n";
-
- // Print out jump tables referenced by the function.
- EmitJumpTableInfo(MF.getJumpTableInfo(), MF);
-
- // Emit post-function debug information.
- DW.EndFunction();
-
- // We didn't modify anything.
- return false;
+ LowerPPCMachineInstrToMCInst(MI, TmpInst, *this, Subtarget.isDarwin());
+ OutStreamer.EmitInstruction(TmpInst);
}
-bool LinuxAsmPrinter::doInitialization(Module &M) {
- bool Result = AsmPrinter::doInitialization(M);
-
- // GNU as handles section names wrapped in quotes
- Mang->setUseQuotes(true);
-
- SwitchToTextSection(TAI->getTextSection());
-
- // Emit initial debug information.
- DW.BeginModule(&M);
- return Result;
-}
-
-/// PrintUnmangledNameSafely - Print out the printable characters in the name.
-/// Don't print things like \n or \0.
-static void PrintUnmangledNameSafely(const Value *V, std::ostream &OS) {
- for (const char *Name = V->getNameStart(), *E = Name+V->getNameLen();
- Name != E; ++Name)
- if (isprint(*Name))
- OS << *Name;
+void PPCLinuxAsmPrinter::EmitFunctionEntryLabel() {
+ if (!Subtarget.isPPC64()) // linux/ppc32 - Normal entry label.
+ return AsmPrinter::EmitFunctionEntryLabel();
+
+ // Emit an official procedure descriptor.
+ MCSectionSubPair Current = OutStreamer.getCurrentSection();
+ const MCSectionELF *Section = OutStreamer.getContext().getELFSection(".opd",
+ ELF::SHT_PROGBITS, ELF::SHF_WRITE | ELF::SHF_ALLOC,
+ SectionKind::getReadOnly());
+ OutStreamer.SwitchSection(Section);
+ OutStreamer.EmitLabel(CurrentFnSym);
+ OutStreamer.EmitValueToAlignment(8);
+ MCSymbol *Symbol1 =
+ OutContext.GetOrCreateSymbol(".L." + Twine(CurrentFnSym->getName()));
+ // Generates a R_PPC64_ADDR64 (from FK_DATA_8) relocation for the function
+ // entry point.
+ OutStreamer.EmitValue(MCSymbolRefExpr::Create(Symbol1, OutContext),
+ 8 /*size*/);
+ MCSymbol *Symbol2 = OutContext.GetOrCreateSymbol(StringRef(".TOC."));
+ // Generates a R_PPC64_TOC relocation for TOC base insertion.
+ OutStreamer.EmitValue(MCSymbolRefExpr::Create(Symbol2,
+ MCSymbolRefExpr::VK_PPC_TOCBASE, OutContext),
+ 8/*size*/);
+ // Emit a null environment pointer.
+ OutStreamer.EmitIntValue(0, 8 /* size */);
+ OutStreamer.SwitchSection(Current.first, Current.second);
+
+ MCSymbol *RealFnSym = OutContext.GetOrCreateSymbol(
+ ".L." + Twine(CurrentFnSym->getName()));
+ OutStreamer.EmitLabel(RealFnSym);
+ CurrentFnSymForSize = RealFnSym;
}
-bool LinuxAsmPrinter::doFinalization(Module &M) {
- const TargetData *TD = TM.getTargetData();
-
- // Print out module-level global variables here.
- for (Module::const_global_iterator I = M.global_begin(), E = M.global_end();
- I != E; ++I) {
- if (!I->hasInitializer()) continue; // External global require no code
-
- // Check to see if this is a special global used by LLVM, if so, emit it.
- if (EmitSpecialLLVMGlobal(I))
- continue;
- std::string name = Mang->getValueName(I);
+bool PPCLinuxAsmPrinter::doFinalization(Module &M) {
+ const DataLayout *TD = TM.getDataLayout();
- if (I->hasHiddenVisibility())
- if (const char *Directive = TAI->getHiddenDirective())
- O << Directive << name << "\n";
-
- Constant *C = I->getInitializer();
- unsigned Size = TD->getABITypeSize(C->getType());
- unsigned Align = TD->getPreferredAlignmentLog(I);
-
- if (C->isNullValue() && /* FIXME: Verify correct */
- !I->hasSection() && (I->hasCommonLinkage() ||
- I->hasInternalLinkage() || I->hasWeakLinkage() ||
- I->hasLinkOnceLinkage() || I->hasExternalLinkage())) {
- if (Size == 0) Size = 1; // .comm Foo, 0 is undefined, avoid it.
- if (I->hasExternalLinkage()) {
- O << "\t.global " << name << '\n';
- O << "\t.type " << name << ", @object\n";
- if (TAI->getBSSSection())
- SwitchToDataSection(TAI->getBSSSection(), I);
- O << name << ":\n";
- O << "\t.zero " << Size << "\n";
- } else if (I->hasInternalLinkage()) {
- SwitchToDataSection("\t.data", I);
- O << TAI->getLCOMMDirective() << name << "," << Size;
- } else {
- SwitchToDataSection("\t.data", I);
- O << ".comm " << name << "," << Size;
- }
- O << "\t\t" << TAI->getCommentString() << " '";
- PrintUnmangledNameSafely(I, O);
- O << "'\n";
- } else {
- switch (I->getLinkage()) {
- case GlobalValue::LinkOnceLinkage:
- case GlobalValue::WeakLinkage:
- case GlobalValue::CommonLinkage:
- O << "\t.global " << name << '\n'
- << "\t.type " << name << ", @object\n"
- << "\t.weak " << name << '\n';
- SwitchToDataSection("\t.data", I);
- break;
- case GlobalValue::AppendingLinkage:
- // FIXME: appending linkage variables should go into a section of
- // their name or something. For now, just emit them as external.
- case GlobalValue::ExternalLinkage:
- // If external or appending, declare as a global symbol
- O << "\t.global " << name << "\n"
- << "\t.type " << name << ", @object\n";
- // FALL THROUGH
- case GlobalValue::InternalLinkage:
- if (I->isConstant()) {
- const ConstantArray *CVA = dyn_cast<ConstantArray>(C);
- if (TAI->getCStringSection() && CVA && CVA->isCString()) {
- SwitchToDataSection(TAI->getCStringSection(), I);
- break;
- }
- }
-
- // FIXME: special handling for ".ctors" & ".dtors" sections
- if (I->hasSection() &&
- (I->getSection() == ".ctors" ||
- I->getSection() == ".dtors")) {
- std::string SectionName = ".section " + I->getSection()
- + ",\"aw\",@progbits";
- SwitchToDataSection(SectionName.c_str());
- } else {
- if (I->isConstant() && TAI->getReadOnlySection())
- SwitchToDataSection(TAI->getReadOnlySection(), I);
- else
- SwitchToDataSection(TAI->getDataSection(), I);
- }
- break;
- default:
- cerr << "Unknown linkage type!";
- abort();
- }
+ bool isPPC64 = TD->getPointerSizeInBits() == 64;
- EmitAlignment(Align, I);
- O << name << ":\t\t\t\t" << TAI->getCommentString() << " '";
- PrintUnmangledNameSafely(I, O);
- O << "'\n";
+ PPCTargetStreamer &TS =
+ static_cast<PPCTargetStreamer &>(OutStreamer.getTargetStreamer());
- // If the initializer is a extern weak symbol, remember to emit the weak
- // reference!
- if (const GlobalValue *GV = dyn_cast<GlobalValue>(C))
- if (GV->hasExternalWeakLinkage())
- ExtWeakSymbols.insert(GV);
+ if (isPPC64 && !TOC.empty()) {
+ const MCSectionELF *Section = OutStreamer.getContext().getELFSection(".toc",
+ ELF::SHT_PROGBITS, ELF::SHF_WRITE | ELF::SHF_ALLOC,
+ SectionKind::getReadOnly());
+ OutStreamer.SwitchSection(Section);
- EmitGlobalConstant(C);
- O << '\n';
+ for (MapVector<MCSymbol*, MCSymbol*>::iterator I = TOC.begin(),
+ E = TOC.end(); I != E; ++I) {
+ OutStreamer.EmitLabel(I->second);
+ MCSymbol *S = OutContext.GetOrCreateSymbol(I->first->getName());
+ TS.emitTCEntry(*S);
}
}
- // TODO
-
- // Emit initial debug information.
- DW.EndModule();
-
- return AsmPrinter::doFinalization(M);
-}
+ MachineModuleInfoELF &MMIELF =
+ MMI->getObjFileInfo<MachineModuleInfoELF>();
+
+ MachineModuleInfoELF::SymbolListTy Stubs = MMIELF.GetGVStubList();
+ if (!Stubs.empty()) {
+ OutStreamer.SwitchSection(getObjFileLowering().getDataSection());
+ 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*/);
+ }
-std::string LinuxAsmPrinter::getSectionForFunction(const Function &F) const {
- switch (F.getLinkage()) {
- default: assert(0 && "Unknown linkage type!");
- case Function::ExternalLinkage:
- case Function::InternalLinkage: return TAI->getTextSection();
- case Function::WeakLinkage:
- case Function::LinkOnceLinkage:
- return ".text";
+ Stubs.clear();
+ OutStreamer.AddBlankLine();
}
-}
-std::string DarwinAsmPrinter::getSectionForFunction(const Function &F) const {
- switch (F.getLinkage()) {
- default: assert(0 && "Unknown linkage type!");
- case Function::ExternalLinkage:
- case Function::InternalLinkage: return TAI->getTextSection();
- case Function::WeakLinkage:
- case Function::LinkOnceLinkage:
- return "\t.section __TEXT,__textcoal_nt,coalesced,pure_instructions";
- }
+ return AsmPrinter::doFinalization(M);
}
-/// runOnMachineFunction - This uses the printMachineInstruction()
-/// method to print assembly for each instruction.
+/// EmitFunctionBodyEnd - Print the traceback table before the .size
+/// directive.
///
-bool DarwinAsmPrinter::runOnMachineFunction(MachineFunction &MF) {
- // We need this for Personality functions.
- MMI = &getAnalysis<MachineModuleInfo>();
- DW.SetModuleInfo(MMI);
-
- SetupMachineFunction(MF);
- O << "\n\n";
-
- // Print out constants referenced by the function
- EmitConstantPool(MF.getConstantPool());
-
- // Print out labels for the function.
- const Function *F = MF.getFunction();
- SwitchToTextSection(getSectionForFunction(*F).c_str(), F);
-
- switch (F->getLinkage()) {
- default: assert(0 && "Unknown linkage type!");
- case Function::InternalLinkage: // Symbols default to internal.
- break;
- case Function::ExternalLinkage:
- O << "\t.globl\t" << CurrentFnName << "\n";
- break;
- case Function::WeakLinkage:
- case Function::LinkOnceLinkage:
- O << "\t.globl\t" << CurrentFnName << "\n";
- O << "\t.weak_definition\t" << CurrentFnName << "\n";
- break;
+void PPCLinuxAsmPrinter::EmitFunctionBodyEnd() {
+ // Only the 64-bit target requires a traceback table. For now,
+ // we only emit the word of zeroes that GDB requires to find
+ // the end of the function, and zeroes for the eight-byte
+ // mandatory fields.
+ // FIXME: We should fill in the eight-byte mandatory fields as described in
+ // the PPC64 ELF ABI (this is a low-priority item because GDB does not
+ // currently make use of these fields).
+ if (Subtarget.isPPC64()) {
+ OutStreamer.EmitIntValue(0, 4/*size*/);
+ OutStreamer.EmitIntValue(0, 8/*size*/);
}
-
- if (F->hasHiddenVisibility())
- if (const char *Directive = TAI->getHiddenDirective())
- O << Directive << CurrentFnName << "\n";
-
- EmitAlignment(OptimizeForSize ? 2 : 4, F);
- O << CurrentFnName << ":\n";
-
- // Emit pre-function debug information.
- DW.BeginFunction(&MF);
-
- // If the function is empty, then we need to emit *something*. Otherwise, the
- // function's label might be associated with something that it wasn't meant to
- // be associated with. We emit a noop in this situation.
- MachineFunction::iterator I = MF.begin();
-
- if (++I == MF.end() && MF.front().empty())
- O << "\tnop\n";
-
- // Print out code for the function.
- for (MachineFunction::const_iterator I = MF.begin(), E = MF.end();
- I != E; ++I) {
- // Print a label for the basic block.
- if (I != MF.begin()) {
- printBasicBlockLabel(I, true, true);
- O << '\n';
- }
- for (MachineBasicBlock::const_iterator II = I->begin(), IE = I->end();
- II != IE; ++II) {
- // Print the assembly for the instruction.
- printMachineInstruction(II);
- }
- }
-
- // Print out jump tables referenced by the function.
- EmitJumpTableInfo(MF.getJumpTableInfo(), MF);
-
- // Emit post-function debug information.
- DW.EndFunction();
-
- // We didn't modify anything.
- return false;
}
-
-bool DarwinAsmPrinter::doInitialization(Module &M) {
+void PPCDarwinAsmPrinter::EmitStartOfAsmFile(Module &M) {
static const char *const CPUDirectives[] = {
"",
"ppc",
+ "ppc440",
"ppc601",
"ppc602",
"ppc603",
"ppc7400",
"ppc750",
"ppc970",
- "ppc64"
+ "ppcA2",
+ "ppce500mc",
+ "ppce5500",
+ "power3",
+ "power4",
+ "power5",
+ "power5x",
+ "power6",
+ "power6x",
+ "power7",
+ "ppc64",
+ "ppc64le"
};
unsigned Directive = Subtarget.getDarwinDirective();
- if (Subtarget.isGigaProcessor() && Directive < PPC::DIR_970)
+ if (Subtarget.hasMFOCRF() && 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)
+ if (Subtarget.isPPC64() && Directive < PPC::DIR_64)
Directive = PPC::DIR_64;
assert(Directive <= PPC::DIR_64 && "Directive out of range.");
- O << "\t.machine " << CPUDirectives[Directive] << "\n";
-
- bool Result = AsmPrinter::doInitialization(M);
-
- // Darwin wants symbols to be quoted if they have complex names.
- Mang->setUseQuotes(true);
+ // FIXME: This is a total hack, finish mc'izing the PPC backend.
+ if (OutStreamer.hasRawTextSupport()) {
+ assert(Directive < array_lengthof(CPUDirectives) &&
+ "CPUDirectives[] might not be up-to-date!");
+ 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.
- SwitchToTextSection("\t.section __TEXT,__textcoal_nt,coalesced,"
- "pure_instructions");
+ const TargetLoweringObjectFileMachO &TLOFMacho =
+ static_cast<const TargetLoweringObjectFileMachO &>(getObjFileLowering());
+ OutStreamer.SwitchSection(TLOFMacho.getTextCoalSection());
if (TM.getRelocationModel() == Reloc::PIC_) {
- SwitchToTextSection("\t.section __TEXT,__picsymbolstub1,symbol_stubs,"
- "pure_instructions,32");
+ OutStreamer.SwitchSection(
+ OutContext.getMachOSection("__TEXT", "__picsymbolstub1",
+ MCSectionMachO::S_SYMBOL_STUBS |
+ MCSectionMachO::S_ATTR_PURE_INSTRUCTIONS,
+ 32, SectionKind::getText()));
} else if (TM.getRelocationModel() == Reloc::DynamicNoPIC) {
- SwitchToTextSection("\t.section __TEXT,__symbol_stub1,symbol_stubs,"
- "pure_instructions,16");
+ OutStreamer.SwitchSection(
+ OutContext.getMachOSection("__TEXT","__symbol_stub1",
+ MCSectionMachO::S_SYMBOL_STUBS |
+ MCSectionMachO::S_ATTR_PURE_INSTRUCTIONS,
+ 16, SectionKind::getText()));
}
- SwitchToTextSection(TAI->getTextSection());
-
- // Emit initial debug information.
- DW.BeginModule(&M);
- return Result;
+ OutStreamer.SwitchSection(getObjFileLowering().getTextSection());
}
-bool DarwinAsmPrinter::doFinalization(Module &M) {
- const TargetData *TD = TM.getTargetData();
-
- // Print out module-level global variables here.
- for (Module::const_global_iterator I = M.global_begin(), E = M.global_end();
- I != E; ++I) {
- if (!I->hasInitializer()) continue; // External global require no code
-
- // Check to see if this is a special global used by LLVM, if so, emit it.
- if (EmitSpecialLLVMGlobal(I)) {
- if (TM.getRelocationModel() == Reloc::Static) {
- if (I->getName() == "llvm.global_ctors")
- O << ".reference .constructors_used\n";
- else if (I->getName() == "llvm.global_dtors")
- O << ".reference .destructors_used\n";
- }
- continue;
- }
-
- std::string name = Mang->getValueName(I);
-
- if (I->hasHiddenVisibility())
- if (const char *Directive = TAI->getHiddenDirective())
- O << Directive << name << "\n";
-
- Constant *C = I->getInitializer();
- const Type *Type = C->getType();
- unsigned Size = TD->getABITypeSize(Type);
- unsigned Align = TD->getPreferredAlignmentLog(I);
-
- if (C->isNullValue() && /* FIXME: Verify correct */
- !I->hasSection() && (I->hasCommonLinkage() ||
- I->hasInternalLinkage() || I->hasWeakLinkage() ||
- I->hasLinkOnceLinkage() || I->hasExternalLinkage())) {
- if (Size == 0) Size = 1; // .comm Foo, 0 is undefined, avoid it.
- if (I->hasExternalLinkage()) {
- O << "\t.globl " << name << '\n';
- O << "\t.zerofill __DATA, __common, " << name << ", "
- << Size << ", " << Align;
- } else if (I->hasInternalLinkage()) {
- SwitchToDataSection("\t.data", I);
- O << TAI->getLCOMMDirective() << name << "," << Size << "," << Align;
- } else if (!I->hasCommonLinkage()) {
- O << "\t.globl " << name << "\n"
- << TAI->getWeakDefDirective() << name << "\n";
- SwitchToDataSection("\t.section __DATA,__datacoal_nt,coalesced", I);
- EmitAlignment(Align, I);
- O << name << ":\t\t\t\t" << TAI->getCommentString() << " ";
- PrintUnmangledNameSafely(I, O);
- O << "\n";
- EmitGlobalConstant(C);
- continue;
- } else {
- SwitchToDataSection("\t.data", I);
- O << ".comm " << name << "," << Size;
- // Darwin 9 and above support aligned common data.
- if (Subtarget.isDarwin9())
- O << "," << Align;
- }
- O << "\t\t" << TAI->getCommentString() << " '";
- PrintUnmangledNameSafely(I, O);
- O << "'\n";
- } else {
- switch (I->getLinkage()) {
- case GlobalValue::LinkOnceLinkage:
- case GlobalValue::WeakLinkage:
- case GlobalValue::CommonLinkage:
- O << "\t.globl " << name << '\n'
- << "\t.weak_definition " << name << '\n';
- SwitchToDataSection("\t.section __DATA,__datacoal_nt,coalesced", I);
- break;
- case GlobalValue::AppendingLinkage:
- // FIXME: appending linkage variables should go into a section of
- // their name or something. For now, just emit them as external.
- case GlobalValue::ExternalLinkage:
- // If external or appending, declare as a global symbol
- O << "\t.globl " << name << "\n";
- // FALL THROUGH
- case GlobalValue::InternalLinkage:
- if (I->isConstant()) {
- const ConstantArray *CVA = dyn_cast<ConstantArray>(C);
- if (TAI->getCStringSection() && CVA && CVA->isCString()) {
- SwitchToDataSection(TAI->getCStringSection(), I);
- break;
- }
- }
- if (I->hasSection()) {
- // Honor all section names on Darwin; ObjC uses this
- std::string SectionName = ".section " + I->getSection();
- SwitchToDataSection(SectionName.c_str());
- } else if (!I->isConstant())
- SwitchToDataSection(TAI->getDataSection(), I);
- else {
- // Read-only data.
- bool HasReloc = C->ContainsRelocations();
- if (HasReloc &&
- TM.getRelocationModel() != Reloc::Static)
- SwitchToDataSection("\t.const_data\n");
- else if (!HasReloc && Size == 4 &&
- TAI->getFourByteConstantSection())
- SwitchToDataSection(TAI->getFourByteConstantSection(), I);
- else if (!HasReloc && Size == 8 &&
- TAI->getEightByteConstantSection())
- SwitchToDataSection(TAI->getEightByteConstantSection(), I);
- else if (!HasReloc && Size == 16 &&
- TAI->getSixteenByteConstantSection())
- SwitchToDataSection(TAI->getSixteenByteConstantSection(), I);
- else if (TAI->getReadOnlySection())
- SwitchToDataSection(TAI->getReadOnlySection(), I);
- else
- SwitchToDataSection(TAI->getDataSection(), I);
- }
- break;
- default:
- cerr << "Unknown linkage type!";
- abort();
- }
-
- EmitAlignment(Align, I);
- O << name << ":\t\t\t\t" << TAI->getCommentString() << " '";
- PrintUnmangledNameSafely(I, O);
- O << "'\n";
-
- // If the initializer is a extern weak symbol, remember to emit the weak
- // reference!
- if (const GlobalValue *GV = dyn_cast<GlobalValue>(C))
- if (GV->hasExternalWeakLinkage())
- ExtWeakSymbols.insert(GV);
+static MCSymbol *GetLazyPtr(MCSymbol *Sym, MCContext &Ctx) {
+ // Remove $stub suffix, add $lazy_ptr.
+ StringRef NoStub = Sym->getName().substr(0, Sym->getName().size()-5);
+ return Ctx.GetOrCreateSymbol(NoStub + "$lazy_ptr");
+}
- EmitGlobalConstant(C);
- O << '\n';
- }
- }
+static MCSymbol *GetAnonSym(MCSymbol *Sym, MCContext &Ctx) {
+ // Add $tmp suffix to $stub, yielding $stub$tmp.
+ return Ctx.GetOrCreateSymbol(Sym->getName() + "$tmp");
+}
- bool isPPC64 = TD->getPointerSizeInBits() == 64;
+void PPCDarwinAsmPrinter::
+EmitFunctionStubs(const MachineModuleInfoMachO::SymbolListTy &Stubs) {
+ bool isPPC64 = TM.getDataLayout()->getPointerSizeInBits() == 64;
+ bool isDarwin = Subtarget.isDarwin();
+
+ const TargetLoweringObjectFileMachO &TLOFMacho =
+ static_cast<const TargetLoweringObjectFileMachO &>(getObjFileLowering());
+ // .lazy_symbol_pointer
+ const MCSection *LSPSection = TLOFMacho.getLazySymbolPointerSection();
+
// Output stubs for dynamically-linked functions
if (TM.getRelocationModel() == Reloc::PIC_) {
- for (std::set<std::string>::iterator i = FnStubs.begin(), e = FnStubs.end();
- i != e; ++i) {
- SwitchToTextSection("\t.section __TEXT,__picsymbolstub1,symbol_stubs,"
- "pure_instructions,32");
+ const MCSection *StubSection =
+ OutContext.getMachOSection("__TEXT", "__picsymbolstub1",
+ MCSectionMachO::S_SYMBOL_STUBS |
+ MCSectionMachO::S_ATTR_PURE_INSTRUCTIONS,
+ 32, SectionKind::getText());
+ for (unsigned i = 0, e = Stubs.size(); i != e; ++i) {
+ OutStreamer.SwitchSection(StubSection);
EmitAlignment(4);
- O << "L" << *i << "$stub:\n";
- O << "\t.indirect_symbol " << *i << "\n";
- O << "\tmflr r0\n";
- O << "\tbcl 20,31,L0$" << *i << "\n";
- O << "L0$" << *i << ":\n";
- O << "\tmflr r11\n";
- O << "\taddis r11,r11,ha16(L" << *i << "$lazy_ptr-L0$" << *i << ")\n";
- O << "\tmtlr r0\n";
- if (isPPC64)
- O << "\tldu r12,lo16(L" << *i << "$lazy_ptr-L0$" << *i << ")(r11)\n";
- else
- O << "\tlwzu r12,lo16(L" << *i << "$lazy_ptr-L0$" << *i << ")(r11)\n";
- O << "\tmtctr r12\n";
- O << "\tbctr\n";
- SwitchToDataSection(".lazy_symbol_pointer");
- O << "L" << *i << "$lazy_ptr:\n";
- O << "\t.indirect_symbol " << *i << "\n";
- if (isPPC64)
- O << "\t.quad dyld_stub_binding_helper\n";
- else
- O << "\t.long dyld_stub_binding_helper\n";
+
+ 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);
+
+ const MCExpr *Anon = MCSymbolRefExpr::Create(AnonSymbol, OutContext);
+ const MCExpr *LazyPtrExpr = MCSymbolRefExpr::Create(LazyPtr, OutContext);
+ const MCExpr *Sub =
+ MCBinaryExpr::CreateSub(LazyPtrExpr, Anon, OutContext);
+
+ // mflr r0
+ OutStreamer.EmitInstruction(MCInstBuilder(PPC::MFLR).addReg(PPC::R0));
+ // bcl 20, 31, AnonSymbol
+ OutStreamer.EmitInstruction(MCInstBuilder(PPC::BCLalways).addExpr(Anon));
+ OutStreamer.EmitLabel(AnonSymbol);
+ // mflr r11
+ OutStreamer.EmitInstruction(MCInstBuilder(PPC::MFLR).addReg(PPC::R11));
+ // addis r11, r11, ha16(LazyPtr - AnonSymbol)
+ const MCExpr *SubHa16 = PPCMCExpr::CreateHa(Sub, isDarwin, OutContext);
+ OutStreamer.EmitInstruction(MCInstBuilder(PPC::ADDIS)
+ .addReg(PPC::R11)
+ .addReg(PPC::R11)
+ .addExpr(SubHa16));
+ // mtlr r0
+ OutStreamer.EmitInstruction(MCInstBuilder(PPC::MTLR).addReg(PPC::R0));
+
+ // ldu r12, lo16(LazyPtr - AnonSymbol)(r11)
+ // lwzu r12, lo16(LazyPtr - AnonSymbol)(r11)
+ const MCExpr *SubLo16 = PPCMCExpr::CreateLo(Sub, isDarwin, OutContext);
+ OutStreamer.EmitInstruction(MCInstBuilder(isPPC64 ? PPC::LDU : PPC::LWZU)
+ .addReg(PPC::R12)
+ .addExpr(SubLo16).addExpr(SubLo16)
+ .addReg(PPC::R11));
+ // mtctr r12
+ OutStreamer.EmitInstruction(MCInstBuilder(PPC::MTCTR).addReg(PPC::R12));
+ // bctr
+ OutStreamer.EmitInstruction(MCInstBuilder(PPC::BCTR));
+
+ OutStreamer.SwitchSection(LSPSection);
+ OutStreamer.EmitLabel(LazyPtr);
+ OutStreamer.EmitSymbolAttribute(RawSym, MCSA_IndirectSymbol);
+
+ MCSymbol *DyldStubBindingHelper =
+ OutContext.GetOrCreateSymbol(StringRef("dyld_stub_binding_helper"));
+ if (isPPC64) {
+ // .quad dyld_stub_binding_helper
+ OutStreamer.EmitSymbolValue(DyldStubBindingHelper, 8);
+ } else {
+ // .long dyld_stub_binding_helper
+ OutStreamer.EmitSymbolValue(DyldStubBindingHelper, 4);
+ }
}
- } else {
- for (std::set<std::string>::iterator i = FnStubs.begin(), e = FnStubs.end();
- i != e; ++i) {
- SwitchToTextSection("\t.section __TEXT,__symbol_stub1,symbol_stubs,"
- "pure_instructions,16");
- EmitAlignment(4);
- O << "L" << *i << "$stub:\n";
- O << "\t.indirect_symbol " << *i << "\n";
- O << "\tlis r11,ha16(L" << *i << "$lazy_ptr)\n";
- if (isPPC64)
- O << "\tldu r12,lo16(L" << *i << "$lazy_ptr)(r11)\n";
- else
- O << "\tlwzu r12,lo16(L" << *i << "$lazy_ptr)(r11)\n";
- O << "\tmtctr r12\n";
- O << "\tbctr\n";
- SwitchToDataSection(".lazy_symbol_pointer");
- O << "L" << *i << "$lazy_ptr:\n";
- O << "\t.indirect_symbol " << *i << "\n";
- if (isPPC64)
- O << "\t.quad dyld_stub_binding_helper\n";
- else
- O << "\t.long dyld_stub_binding_helper\n";
+ 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);
+ const MCExpr *LazyPtrExpr = MCSymbolRefExpr::Create(LazyPtr, OutContext);
+
+ OutStreamer.SwitchSection(StubSection);
+ EmitAlignment(4);
+ OutStreamer.EmitLabel(Stub);
+ OutStreamer.EmitSymbolAttribute(RawSym, MCSA_IndirectSymbol);
+
+ // lis r11, ha16(LazyPtr)
+ const MCExpr *LazyPtrHa16 =
+ PPCMCExpr::CreateHa(LazyPtrExpr, isDarwin, OutContext);
+ OutStreamer.EmitInstruction(MCInstBuilder(PPC::LIS)
+ .addReg(PPC::R11)
+ .addExpr(LazyPtrHa16));
+
+ // ldu r12, lo16(LazyPtr)(r11)
+ // lwzu r12, lo16(LazyPtr)(r11)
+ const MCExpr *LazyPtrLo16 =
+ PPCMCExpr::CreateLo(LazyPtrExpr, isDarwin, OutContext);
+ OutStreamer.EmitInstruction(MCInstBuilder(isPPC64 ? PPC::LDU : PPC::LWZU)
+ .addReg(PPC::R12)
+ .addExpr(LazyPtrLo16).addExpr(LazyPtrLo16)
+ .addReg(PPC::R11));
+
+ // mtctr r12
+ OutStreamer.EmitInstruction(MCInstBuilder(PPC::MTCTR).addReg(PPC::R12));
+ // bctr
+ OutStreamer.EmitInstruction(MCInstBuilder(PPC::BCTR));
+
+ OutStreamer.SwitchSection(LSPSection);
+ OutStreamer.EmitLabel(LazyPtr);
+ OutStreamer.EmitSymbolAttribute(RawSym, MCSA_IndirectSymbol);
+
+ MCSymbol *DyldStubBindingHelper =
+ OutContext.GetOrCreateSymbol(StringRef("dyld_stub_binding_helper"));
+ if (isPPC64) {
+ // .quad dyld_stub_binding_helper
+ OutStreamer.EmitSymbolValue(DyldStubBindingHelper, 8);
+ } else {
+ // .long dyld_stub_binding_helper
+ OutStreamer.EmitSymbolValue(DyldStubBindingHelper, 4);
}
}
+
+ OutStreamer.AddBlankLine();
+}
- O << "\n";
- if (TAI->doesSupportExceptionHandling() && MMI) {
+bool PPCDarwinAsmPrinter::doFinalization(Module &M) {
+ bool isPPC64 = TM.getDataLayout()->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<Function *>& Personalities = MMI->getPersonalities();
-
- for (std::vector<Function *>::const_iterator I = Personalities.begin(),
- E = Personalities.end(); I != E; ++I)
- if (*I) GVStubs.insert("_" + (*I)->getName());
+ 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, "$non_lazy_ptr");
+ MachineModuleInfoImpl::StubValueTy &StubSym =
+ MMIMacho.getGVStubEntry(NLPSym);
+ StubSym = MachineModuleInfoImpl::StubValueTy(getSymbol(*I), true);
+ }
+ }
}
- // Output stubs for external and common global variables.
- if (!GVStubs.empty()) {
- SwitchToDataSection(".non_lazy_symbol_pointer");
- for (std::set<std::string>::iterator I = GVStubs.begin(),
- E = GVStubs.end(); I != E; ++I) {
- O << "L" << *I << "$non_lazy_ptr:\n";
- O << "\t.indirect_symbol " << *I << "\n";
- if (isPPC64)
- O << "\t.quad\t0\n";
+ // 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$stub:
+ OutStreamer.EmitLabel(Stubs[i].first);
+ // .indirect_symbol _foo
+ MachineModuleInfoImpl::StubValueTy &MCSym = Stubs[i].second;
+ OutStreamer.EmitSymbolAttribute(MCSym.getPointer(), MCSA_IndirectSymbol);
+
+ if (MCSym.getInt())
+ // External to current translation unit.
+ OutStreamer.EmitIntValue(0, isPPC64 ? 8 : 4/*size*/);
else
- O << "\t.long\t0\n";
-
+ // Internal to current translation unit.
+ //
+ // When we place the LSDA into the TEXT section, the type info pointers
+ // need to be indirect and pc-rel. We accomplish this by using NLPs.
+ // However, sometimes the types are local to the file. So we need to
+ // fill in the value for the NLP in those cases.
+ OutStreamer.EmitValue(MCSymbolRefExpr::Create(MCSym.getPointer(),
+ OutContext),
+ isPPC64 ? 8 : 4/*size*/);
}
+
+ Stubs.clear();
+ OutStreamer.AddBlankLine();
}
- // Emit initial debug information.
- DW.EndModule();
+ Stubs = MMIMacho.GetHiddenGVStubList();
+ if (!Stubs.empty()) {
+ OutStreamer.SwitchSection(getObjFileLowering().getDataSection());
+ EmitAlignment(isPPC64 ? 3 : 2);
+
+ for (unsigned i = 0, e = Stubs.size(); i != e; ++i) {
+ // L_foo$stub:
+ OutStreamer.EmitLabel(Stubs[i].first);
+ // .long _foo
+ OutStreamer.EmitValue(MCSymbolRefExpr::
+ Create(Stubs[i].second.getPointer(),
+ OutContext),
+ isPPC64 ? 8 : 4/*size*/);
+ }
+
+ 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.
- O << "\t.subsections_via_symbols\n";
+ 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.
///
-FunctionPass *llvm::createPPCAsmPrinterPass(std::ostream &o,
- PPCTargetMachine &tm) {
+static AsmPrinter *createPPCAsmPrinterPass(TargetMachine &tm,
+ MCStreamer &Streamer) {
const PPCSubtarget *Subtarget = &tm.getSubtarget<PPCSubtarget>();
- if (Subtarget->isDarwin()) {
- return new DarwinAsmPrinter(o, tm, tm.getTargetAsmInfo());
- } else {
- return new LinuxAsmPrinter(o, tm, tm.getTargetAsmInfo());
- }
+ 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 / blobdiff