-//===-- SparcV8AsmPrinter.cpp - SparcV8 LLVM assembly writer --------------===//
+//===-- SparcAsmPrinter.cpp - Sparc LLVM assembly writer ------------------===//
//
// The LLVM Compiler Infrastructure
//
-// This file was developed by the LLVM research group and is distributed under
-// the University of Illinois Open Source License. See LICENSE.TXT for details.
+// 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 GAS-format Sparc V8 assembly language.
+// of machine-dependent LLVM code to GAS-format SPARC assembly language.
//
//===----------------------------------------------------------------------===//
-#include "SparcV8.h"
-#include "SparcV8InstrInfo.h"
-#include "llvm/Constants.h"
-#include "llvm/DerivedTypes.h"
-#include "llvm/Module.h"
-#include "llvm/Assembly/Writer.h"
-#include "llvm/CodeGen/MachineFunctionPass.h"
-#include "llvm/CodeGen/MachineConstantPool.h"
+#define DEBUG_TYPE "asm-printer"
+#include "Sparc.h"
+#include "InstPrinter/SparcInstPrinter.h"
+#include "MCTargetDesc/SparcMCExpr.h"
+#include "SparcInstrInfo.h"
+#include "SparcTargetMachine.h"
+#include "SparcTargetStreamer.h"
+#include "llvm/ADT/SmallString.h"
+#include "llvm/CodeGen/AsmPrinter.h"
#include "llvm/CodeGen/MachineInstr.h"
-#include "llvm/Target/TargetMachine.h"
-#include "llvm/Support/Mangler.h"
-#include "llvm/ADT/Statistic.h"
-#include "llvm/ADT/StringExtras.h"
-#include "llvm/Support/CommandLine.h"
-#include "llvm/Support/MathExtras.h"
-#include <cctype>
+#include "llvm/CodeGen/MachineModuleInfoImpls.h"
+#include "llvm/CodeGen/MachineRegisterInfo.h"
+#include "llvm/CodeGen/TargetLoweringObjectFileImpl.h"
+#include "llvm/IR/Mangler.h"
+#include "llvm/MC/MCAsmInfo.h"
+#include "llvm/MC/MCContext.h"
+#include "llvm/MC/MCInst.h"
+#include "llvm/MC/MCStreamer.h"
+#include "llvm/MC/MCSymbol.h"
+#include "llvm/Support/TargetRegistry.h"
+#include "llvm/Support/raw_ostream.h"
using namespace llvm;
namespace {
- Statistic<> EmittedInsts("asm-printer", "Number of machine instrs printed");
-
- struct SparcV8AsmPrinter : public MachineFunctionPass {
- /// Output stream on which we're printing assembly code.
- ///
- std::ostream &O;
+ class SparcAsmPrinter : public AsmPrinter {
+ SparcTargetStreamer &getTargetStreamer() {
+ return static_cast<SparcTargetStreamer &>(
+ *OutStreamer.getTargetStreamer());
+ }
+ public:
+ explicit SparcAsmPrinter(TargetMachine &TM, MCStreamer &Streamer)
+ : AsmPrinter(TM, Streamer) {}
- /// Target machine description which we query for reg. names, data
- /// layout, etc.
- ///
- TargetMachine &TM;
+ virtual const char *getPassName() const {
+ return "Sparc Assembly Printer";
+ }
- /// Name-mangler for global names.
- ///
- Mangler *Mang;
+ void printOperand(const MachineInstr *MI, int opNum, raw_ostream &OS);
+ void printMemOperand(const MachineInstr *MI, int opNum, raw_ostream &OS,
+ const char *Modifier = 0);
+ void printCCOperand(const MachineInstr *MI, int opNum, raw_ostream &OS);
- SparcV8AsmPrinter(std::ostream &o, TargetMachine &tm) : O(o), TM(tm) { }
+ virtual void EmitFunctionBodyStart();
+ virtual void EmitInstruction(const MachineInstr *MI);
+ virtual void EmitEndOfAsmFile(Module &M);
- /// We name each basic block in a Function with a unique number, so
- /// that we can consistently refer to them later. This is cleared
- /// at the beginning of each call to runOnMachineFunction().
- ///
- typedef std::map<const Value *, unsigned> ValueMapTy;
- ValueMapTy NumberForBB;
+ static const char *getRegisterName(unsigned RegNo) {
+ return SparcInstPrinter::getRegisterName(RegNo);
+ }
- /// Cache of mangled name for current function. This is
- /// recalculated at the beginning of each call to
- /// runOnMachineFunction().
- ///
- std::string CurrentFnName;
+ 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);
- virtual const char *getPassName() const {
- return "SparcV8 Assembly Printer";
- }
+ void LowerGETPCXAndEmitMCInsts(const MachineInstr *MI,
+ const MCSubtargetInfo &STI);
- void emitConstantValueOnly(const Constant *CV);
- void emitGlobalConstant(const Constant *CV);
- void printConstantPool(MachineConstantPool *MCP);
- void printOperand(const MachineInstr *MI, int opNum);
- void printBaseOffsetPair (const MachineInstr *MI, int i);
- void printMachineInstruction(const MachineInstr *MI);
- bool printInstruction(const MachineInstr *MI); // autogenerated.
- bool runOnMachineFunction(MachineFunction &F);
- bool doInitialization(Module &M);
- bool doFinalization(Module &M);
};
} // end of anonymous namespace
-#include "SparcV8GenAsmWriter.inc"
+static MCOperand createSparcMCOperand(SparcMCExpr::VariantKind Kind,
+ MCSymbol *Sym, MCContext &OutContext) {
+ const MCSymbolRefExpr *MCSym = MCSymbolRefExpr::Create(Sym,
+ OutContext);
+ const SparcMCExpr *expr = SparcMCExpr::Create(Kind, MCSym, OutContext);
+ return MCOperand::CreateExpr(expr);
-/// createSparcV8CodePrinterPass - Returns a pass that prints the SparcV8
-/// assembly code for a MachineFunction to the given output stream,
-/// using the given target machine description. This should work
-/// regardless of whether the function is in SSA form.
-///
-FunctionPass *llvm::createSparcV8CodePrinterPass (std::ostream &o,
- TargetMachine &tm) {
- return new SparcV8AsmPrinter(o, tm);
+}
+static MCOperand createPCXCallOP(MCSymbol *Label,
+ MCContext &OutContext) {
+ return createSparcMCOperand(SparcMCExpr::VK_Sparc_None, Label, OutContext);
}
-/// toOctal - Convert the low order bits of X into an octal digit.
-///
-static inline char toOctal(int X) {
- return (X&7)+'0';
+static MCOperand createPCXRelExprOp(SparcMCExpr::VariantKind Kind,
+ MCSymbol *GOTLabel, MCSymbol *StartLabel,
+ MCSymbol *CurLabel,
+ MCContext &OutContext)
+{
+ const MCSymbolRefExpr *GOT = MCSymbolRefExpr::Create(GOTLabel, OutContext);
+ const MCSymbolRefExpr *Start = MCSymbolRefExpr::Create(StartLabel,
+ OutContext);
+ const MCSymbolRefExpr *Cur = MCSymbolRefExpr::Create(CurLabel,
+ OutContext);
+
+ const MCBinaryExpr *Sub = MCBinaryExpr::CreateSub(Cur, Start, OutContext);
+ const MCBinaryExpr *Add = MCBinaryExpr::CreateAdd(GOT, Sub, OutContext);
+ const SparcMCExpr *expr = SparcMCExpr::Create(Kind,
+ Add, OutContext);
+ return MCOperand::CreateExpr(expr);
}
-/// getAsCString - Return the specified array as a C compatible
-/// string, only if the predicate isStringCompatible is true.
-///
-static void printAsCString(std::ostream &O, const ConstantArray *CVA) {
- assert(CVA->isString() && "Array is not string compatible!");
-
- O << "\"";
- for (unsigned i = 0; i != CVA->getNumOperands(); ++i) {
- unsigned char C = cast<ConstantInt>(CVA->getOperand(i))->getRawValue();
-
- if (C == '"') {
- O << "\\\"";
- } else if (C == '\\') {
- O << "\\\\";
- } else if (isprint(C)) {
- O << C;
- } else {
- switch(C) {
- case '\b': O << "\\b"; break;
- case '\f': O << "\\f"; break;
- case '\n': O << "\\n"; break;
- case '\r': O << "\\r"; break;
- case '\t': O << "\\t"; break;
- default:
- O << '\\';
- O << toOctal(C >> 6);
- O << toOctal(C >> 3);
- O << toOctal(C >> 0);
- break;
- }
- }
- }
- O << "\"";
+static void EmitCall(MCStreamer &OutStreamer,
+ MCOperand &Callee,
+ const MCSubtargetInfo &STI)
+{
+ MCInst CallInst;
+ CallInst.setOpcode(SP::CALL);
+ CallInst.addOperand(Callee);
+ OutStreamer.EmitInstruction(CallInst, STI);
}
-// Print out the specified constant, without a storage class. Only the
-// constants valid in constant expressions can occur here.
-void SparcV8AsmPrinter::emitConstantValueOnly(const Constant *CV) {
- if (CV->isNullValue() || isa<UndefValue> (CV))
- O << "0";
- else if (const ConstantBool *CB = dyn_cast<ConstantBool>(CV)) {
- assert(CB == ConstantBool::True);
- O << "1";
- } else if (const ConstantSInt *CI = dyn_cast<ConstantSInt>(CV))
- if (((CI->getValue() << 32) >> 32) == CI->getValue())
- O << CI->getValue();
- else
- O << (unsigned long long)CI->getValue();
- else if (const ConstantUInt *CI = dyn_cast<ConstantUInt>(CV))
- O << CI->getValue();
- else if (const GlobalValue *GV = dyn_cast<GlobalValue>(CV))
- // This is a constant address for a global variable or function. Use the
- // name of the variable or function as the address value.
- O << Mang->getValueName(GV);
- else if (const ConstantExpr *CE = dyn_cast<ConstantExpr>(CV)) {
- const TargetData &TD = TM.getTargetData();
- switch(CE->getOpcode()) {
- case Instruction::GetElementPtr: {
- // generate a symbolic expression for the byte address
- const Constant *ptrVal = CE->getOperand(0);
- std::vector<Value*> idxVec(CE->op_begin()+1, CE->op_end());
- if (unsigned Offset = TD.getIndexedOffset(ptrVal->getType(), idxVec)) {
- O << "(";
- emitConstantValueOnly(ptrVal);
- O << ") + " << Offset;
- } else {
- emitConstantValueOnly(ptrVal);
- }
- break;
- }
- case Instruction::Cast: {
- // Support only non-converting or widening casts for now, that is, ones
- // that do not involve a change in value. This assertion is really gross,
- // and may not even be a complete check.
- Constant *Op = CE->getOperand(0);
- const Type *OpTy = Op->getType(), *Ty = CE->getType();
-
- // Pointers on ILP32 machines can be losslessly converted back and
- // forth into 32-bit or wider integers, regardless of signedness.
- assert(((isa<PointerType>(OpTy)
- && (Ty == Type::LongTy || Ty == Type::ULongTy
- || Ty == Type::IntTy || Ty == Type::UIntTy))
- || (isa<PointerType>(Ty)
- && (OpTy == Type::LongTy || OpTy == Type::ULongTy
- || OpTy == Type::IntTy || OpTy == Type::UIntTy))
- || (((TD.getTypeSize(Ty) >= TD.getTypeSize(OpTy))
- && OpTy->isLosslesslyConvertibleTo(Ty))))
- && "FIXME: Don't yet support this kind of constant cast expr");
- O << "(";
- emitConstantValueOnly(Op);
- O << ")";
- break;
- }
- case Instruction::Add:
- O << "(";
- emitConstantValueOnly(CE->getOperand(0));
- O << ") + (";
- emitConstantValueOnly(CE->getOperand(1));
- O << ")";
- break;
- default:
- assert(0 && "Unsupported operator!");
- }
- } else {
- assert(0 && "Unknown constant value!");
- }
+static void EmitSETHI(MCStreamer &OutStreamer,
+ MCOperand &Imm, MCOperand &RD,
+ const MCSubtargetInfo &STI)
+{
+ MCInst SETHIInst;
+ SETHIInst.setOpcode(SP::SETHIi);
+ SETHIInst.addOperand(RD);
+ SETHIInst.addOperand(Imm);
+ OutStreamer.EmitInstruction(SETHIInst, STI);
}
-// Print a constant value or values, with the appropriate storage class as a
-// prefix.
-void SparcV8AsmPrinter::emitGlobalConstant(const Constant *CV) {
- const TargetData &TD = TM.getTargetData();
-
- if (const ConstantArray *CVA = dyn_cast<ConstantArray>(CV)) {
- if (CVA->isString()) {
- O << "\t.ascii\t";
- printAsCString(O, CVA);
- O << "\n";
- } else { // Not a string. Print the values in successive locations
- for (unsigned i = 0, e = CVA->getNumOperands(); i != e; i++)
- emitGlobalConstant(CVA->getOperand(i));
- }
- return;
- } else if (const ConstantStruct *CVS = dyn_cast<ConstantStruct>(CV)) {
- // Print the fields in successive locations. Pad to align if needed!
- const StructLayout *cvsLayout = TD.getStructLayout(CVS->getType());
- unsigned sizeSoFar = 0;
- for (unsigned i = 0, e = CVS->getNumOperands(); i != e; i++) {
- const Constant* field = CVS->getOperand(i);
-
- // Check if padding is needed and insert one or more 0s.
- unsigned fieldSize = TD.getTypeSize(field->getType());
- unsigned padSize = ((i == e-1? cvsLayout->StructSize
- : cvsLayout->MemberOffsets[i+1])
- - cvsLayout->MemberOffsets[i]) - fieldSize;
- sizeSoFar += fieldSize + padSize;
-
- // Now print the actual field value
- emitGlobalConstant(field);
-
- // Insert the field padding unless it's zero bytes...
- if (padSize)
- O << "\t.skip\t " << padSize << "\n";
- }
- assert(sizeSoFar == cvsLayout->StructSize &&
- "Layout of constant struct may be incorrect!");
- return;
- } else if (const ConstantFP *CFP = dyn_cast<ConstantFP>(CV)) {
- // FP Constants are printed as integer constants to avoid losing
- // precision...
- double Val = CFP->getValue();
- switch (CFP->getType()->getTypeID()) {
- default: assert(0 && "Unknown floating point type!");
- case Type::FloatTyID: {
- O << ".long\t" << FloatToBits(Val) << "\t! float " << Val << "\n";
- return;
+static void EmitBinary(MCStreamer &OutStreamer, unsigned Opcode,
+ MCOperand &RS1, MCOperand &Src2, MCOperand &RD,
+ const MCSubtargetInfo &STI)
+{
+ MCInst Inst;
+ Inst.setOpcode(Opcode);
+ Inst.addOperand(RD);
+ Inst.addOperand(RS1);
+ Inst.addOperand(Src2);
+ OutStreamer.EmitInstruction(Inst, STI);
+}
+
+static void EmitOR(MCStreamer &OutStreamer,
+ MCOperand &RS1, MCOperand &Imm, MCOperand &RD,
+ const MCSubtargetInfo &STI) {
+ EmitBinary(OutStreamer, SP::ORri, RS1, Imm, RD, STI);
+}
+
+static void EmitADD(MCStreamer &OutStreamer,
+ MCOperand &RS1, MCOperand &RS2, MCOperand &RD,
+ const MCSubtargetInfo &STI) {
+ EmitBinary(OutStreamer, SP::ADDrr, RS1, RS2, RD, STI);
+}
+
+static void EmitSHL(MCStreamer &OutStreamer,
+ MCOperand &RS1, MCOperand &Imm, MCOperand &RD,
+ const MCSubtargetInfo &STI) {
+ EmitBinary(OutStreamer, SP::SLLri, RS1, Imm, RD, STI);
+}
+
+
+static void EmitHiLo(MCStreamer &OutStreamer, MCSymbol *GOTSym,
+ SparcMCExpr::VariantKind HiKind,
+ SparcMCExpr::VariantKind LoKind,
+ MCOperand &RD,
+ MCContext &OutContext,
+ const MCSubtargetInfo &STI) {
+
+ MCOperand hi = createSparcMCOperand(HiKind, GOTSym, OutContext);
+ MCOperand lo = createSparcMCOperand(LoKind, GOTSym, OutContext);
+ EmitSETHI(OutStreamer, hi, RD, STI);
+ EmitOR(OutStreamer, RD, lo, RD, STI);
+}
+
+void SparcAsmPrinter::LowerGETPCXAndEmitMCInsts(const MachineInstr *MI,
+ const MCSubtargetInfo &STI)
+{
+ MCSymbol *GOTLabel =
+ OutContext.GetOrCreateSymbol(Twine("_GLOBAL_OFFSET_TABLE_"));
+
+ const MachineOperand &MO = MI->getOperand(0);
+ assert(MO.getReg() != SP::O7 &&
+ "%o7 is assigned as destination for getpcx!");
+
+ MCOperand MCRegOP = MCOperand::CreateReg(MO.getReg());
+
+
+ if (TM.getRelocationModel() != Reloc::PIC_) {
+ // Just load the address of GOT to MCRegOP.
+ switch(TM.getCodeModel()) {
+ default:
+ llvm_unreachable("Unsupported absolute code model");
+ case CodeModel::Small:
+ EmitHiLo(OutStreamer, GOTLabel,
+ SparcMCExpr::VK_Sparc_HI, SparcMCExpr::VK_Sparc_LO,
+ MCRegOP, OutContext, STI);
+ break;
+ case CodeModel::Medium: {
+ EmitHiLo(OutStreamer, GOTLabel,
+ SparcMCExpr::VK_Sparc_H44, SparcMCExpr::VK_Sparc_M44,
+ MCRegOP, OutContext, STI);
+ MCOperand imm = MCOperand::CreateExpr(MCConstantExpr::Create(12,
+ OutContext));
+ EmitSHL(OutStreamer, MCRegOP, imm, MCRegOP, STI);
+ MCOperand lo = createSparcMCOperand(SparcMCExpr::VK_Sparc_L44,
+ GOTLabel, OutContext);
+ EmitOR(OutStreamer, MCRegOP, lo, MCRegOP, STI);
+ break;
}
- case Type::DoubleTyID: {
- O << ".word\t0x" << std::hex << (DoubleToBits(Val) >> 32) << std::dec << "\t! double " << Val << "\n";
- O << ".word\t0x" << std::hex << (DoubleToBits(Val) & 0xffffffffUL) << std::dec << "\t! double " << Val << "\n";
- return;
+ case CodeModel::Large: {
+ EmitHiLo(OutStreamer, GOTLabel,
+ SparcMCExpr::VK_Sparc_HH, SparcMCExpr::VK_Sparc_HM,
+ MCRegOP, OutContext, STI);
+ MCOperand imm = MCOperand::CreateExpr(MCConstantExpr::Create(32,
+ OutContext));
+ EmitSHL(OutStreamer, MCRegOP, imm, MCRegOP, STI);
+ // Use register %o7 to load the lower 32 bits.
+ MCOperand RegO7 = MCOperand::CreateReg(SP::O7);
+ EmitHiLo(OutStreamer, GOTLabel,
+ SparcMCExpr::VK_Sparc_HI, SparcMCExpr::VK_Sparc_LO,
+ RegO7, OutContext, STI);
+ EmitADD(OutStreamer, MCRegOP, RegO7, MCRegOP, STI);
}
}
- } else if (isa<UndefValue> (CV)) {
- unsigned size = TD.getTypeSize (CV->getType ());
- O << "\t.skip\t " << size << "\n";
- return;
- } else if (isa<ConstantAggregateZero> (CV)) {
- unsigned size = TD.getTypeSize (CV->getType ());
- for (unsigned i = 0; i < size; ++i)
- O << "\t.byte 0\n";
return;
}
- const Type *type = CV->getType();
- O << "\t";
- switch (type->getTypeID()) {
- case Type::BoolTyID: case Type::UByteTyID: case Type::SByteTyID:
- O << ".byte";
- break;
- case Type::UShortTyID: case Type::ShortTyID:
- O << ".half";
- break;
- case Type::FloatTyID: case Type::PointerTyID:
- case Type::UIntTyID: case Type::IntTyID:
- O << ".word";
- break;
- case Type::DoubleTyID:
- case Type::ULongTyID: case Type::LongTyID:
- O << ".xword";
- break;
- default:
- assert (0 && "Can't handle printing this type of thing");
- break;
- }
- O << "\t";
- emitConstantValueOnly(CV);
- O << "\n";
+ MCSymbol *StartLabel = OutContext.CreateTempSymbol();
+ MCSymbol *EndLabel = OutContext.CreateTempSymbol();
+ MCSymbol *SethiLabel = OutContext.CreateTempSymbol();
+
+ MCOperand RegO7 = MCOperand::CreateReg(SP::O7);
+
+ // <StartLabel>:
+ // call <EndLabel>
+ // <SethiLabel>:
+ // sethi %hi(_GLOBAL_OFFSET_TABLE_+(<SethiLabel>-<StartLabel>)), <MO>
+ // <EndLabel>:
+ // or <MO>, %lo(_GLOBAL_OFFSET_TABLE_+(<EndLabel>-<StartLabel>))), <MO>
+ // add <MO>, %o7, <MO>
+
+ OutStreamer.EmitLabel(StartLabel);
+ MCOperand Callee = createPCXCallOP(EndLabel, OutContext);
+ EmitCall(OutStreamer, Callee, STI);
+ OutStreamer.EmitLabel(SethiLabel);
+ MCOperand hiImm = createPCXRelExprOp(SparcMCExpr::VK_Sparc_PC22,
+ GOTLabel, StartLabel, SethiLabel,
+ OutContext);
+ EmitSETHI(OutStreamer, hiImm, MCRegOP, STI);
+ OutStreamer.EmitLabel(EndLabel);
+ MCOperand loImm = createPCXRelExprOp(SparcMCExpr::VK_Sparc_PC10,
+ GOTLabel, StartLabel, EndLabel,
+ OutContext);
+ EmitOR(OutStreamer, MCRegOP, loImm, MCRegOP, STI);
+ EmitADD(OutStreamer, MCRegOP, RegO7, MCRegOP, STI);
}
-/// printConstantPool - Print to the current output stream assembly
-/// representations of the constants in the constant pool MCP. This is
-/// used to print out constants which have been "spilled to memory" by
-/// the code generator.
-///
-void SparcV8AsmPrinter::printConstantPool(MachineConstantPool *MCP) {
- const std::vector<Constant*> &CP = MCP->getConstants();
- const TargetData &TD = TM.getTargetData();
-
- if (CP.empty()) return;
-
- for (unsigned i = 0, e = CP.size(); i != e; ++i) {
- O << "\t.section \".rodata\"\n";
- O << "\t.align " << (unsigned)TD.getTypeAlignment(CP[i]->getType())
- << "\n";
- O << ".CPI" << CurrentFnName << "_" << i << ":\t\t\t\t\t!"
- << *CP[i] << "\n";
- emitGlobalConstant(CP[i]);
+void SparcAsmPrinter::EmitInstruction(const MachineInstr *MI)
+{
+
+ switch (MI->getOpcode()) {
+ default: break;
+ case TargetOpcode::DBG_VALUE:
+ // FIXME: Debug Value.
+ return;
+ case SP::GETPCX:
+ LowerGETPCXAndEmitMCInsts(MI, getSubtargetInfo());
+ return;
}
+ MachineBasicBlock::const_instr_iterator I = MI;
+ MachineBasicBlock::const_instr_iterator E = MI->getParent()->instr_end();
+ do {
+ MCInst TmpInst;
+ LowerSparcMachineInstrToMCInst(I, TmpInst, *this);
+ EmitToStreamer(OutStreamer, TmpInst);
+ } while ((++I != E) && I->isInsideBundle()); // Delay slot check.
}
-/// runOnMachineFunction - This uses the printMachineInstruction()
-/// method to print assembly for each instruction.
-///
-bool SparcV8AsmPrinter::runOnMachineFunction(MachineFunction &MF) {
- // BBNumber is used here so that a given Printer will never give two
- // BBs the same name. (If you have a better way, please let me know!)
- static unsigned BBNumber = 0;
-
- O << "\n\n";
- // What's my mangled name?
- CurrentFnName = Mang->getValueName(MF.getFunction());
-
- // Print out constants referenced by the function
- printConstantPool(MF.getConstantPool());
-
- // Print out labels for the function.
- O << "\t.text\n";
- O << "\t.align 16\n";
- O << "\t.globl\t" << CurrentFnName << "\n";
- O << "\t.type\t" << CurrentFnName << ", #function\n";
- O << CurrentFnName << ":\n";
-
- // Number each basic block so that we can consistently refer to them
- // in PC-relative references.
- NumberForBB.clear();
- for (MachineFunction::const_iterator I = MF.begin(), E = MF.end();
- I != E; ++I) {
- NumberForBB[I->getBasicBlock()] = BBNumber++;
- }
+void SparcAsmPrinter::EmitFunctionBodyStart() {
+ if (!TM.getSubtarget<SparcSubtarget>().is64Bit())
+ return;
- // 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.
- O << ".LBB" << Mang->getValueName(MF.getFunction ())
- << "_" << I->getNumber () << ":\t! "
- << I->getBasicBlock ()->getName () << "\n";
- for (MachineBasicBlock::const_iterator II = I->begin(), E = I->end();
- II != E; ++II) {
- // Print the assembly for the instruction.
- printMachineInstruction(II);
- }
- }
+ const MachineRegisterInfo &MRI = MF->getRegInfo();
+ const unsigned globalRegs[] = { SP::G2, SP::G3, SP::G6, SP::G7, 0 };
+ for (unsigned i = 0; globalRegs[i] != 0; ++i) {
+ unsigned reg = globalRegs[i];
+ if (MRI.use_empty(reg))
+ continue;
- // We didn't modify anything.
- return false;
+ if (reg == SP::G6 || reg == SP::G7)
+ getTargetStreamer().emitSparcRegisterIgnore(reg);
+ else
+ getTargetStreamer().emitSparcRegisterScratch(reg);
+ }
}
-void SparcV8AsmPrinter::printOperand(const MachineInstr *MI, int opNum) {
+void SparcAsmPrinter::printOperand(const MachineInstr *MI, int opNum,
+ raw_ostream &O) {
+ const DataLayout *DL = TM.getDataLayout();
const MachineOperand &MO = MI->getOperand (opNum);
- const MRegisterInfo &RI = *TM.getRegisterInfo();
- bool CloseParen = false;
- if (MI->getOpcode() == V8::SETHIi && !MO.isRegister() && !MO.isImmediate()) {
- O << "%hi(";
- CloseParen = true;
- } else if (MI->getOpcode() ==V8::ORri &&!MO.isRegister() &&!MO.isImmediate())
- {
- O << "%lo(";
- CloseParen = true;
+ SparcMCExpr::VariantKind TF = (SparcMCExpr::VariantKind) MO.getTargetFlags();
+
+#ifndef NDEBUG
+ // Verify the target flags.
+ if (MO.isGlobal() || MO.isSymbol() || MO.isCPI()) {
+ if (MI->getOpcode() == SP::CALL)
+ assert(TF == SparcMCExpr::VK_Sparc_None &&
+ "Cannot handle target flags on call address");
+ else if (MI->getOpcode() == SP::SETHIi || MI->getOpcode() == SP::SETHIXi)
+ assert((TF == SparcMCExpr::VK_Sparc_HI
+ || TF == SparcMCExpr::VK_Sparc_H44
+ || TF == SparcMCExpr::VK_Sparc_HH
+ || TF == SparcMCExpr::VK_Sparc_TLS_GD_HI22
+ || TF == SparcMCExpr::VK_Sparc_TLS_LDM_HI22
+ || TF == SparcMCExpr::VK_Sparc_TLS_LDO_HIX22
+ || TF == SparcMCExpr::VK_Sparc_TLS_IE_HI22
+ || TF == SparcMCExpr::VK_Sparc_TLS_LE_HIX22) &&
+ "Invalid target flags for address operand on sethi");
+ else if (MI->getOpcode() == SP::TLS_CALL)
+ assert((TF == SparcMCExpr::VK_Sparc_None
+ || TF == SparcMCExpr::VK_Sparc_TLS_GD_CALL
+ || TF == SparcMCExpr::VK_Sparc_TLS_LDM_CALL) &&
+ "Cannot handle target flags on tls call address");
+ else if (MI->getOpcode() == SP::TLS_ADDrr)
+ assert((TF == SparcMCExpr::VK_Sparc_TLS_GD_ADD
+ || TF == SparcMCExpr::VK_Sparc_TLS_LDM_ADD
+ || TF == SparcMCExpr::VK_Sparc_TLS_LDO_ADD
+ || TF == SparcMCExpr::VK_Sparc_TLS_IE_ADD) &&
+ "Cannot handle target flags on add for TLS");
+ else if (MI->getOpcode() == SP::TLS_LDrr)
+ assert(TF == SparcMCExpr::VK_Sparc_TLS_IE_LD &&
+ "Cannot handle target flags on ld for TLS");
+ else if (MI->getOpcode() == SP::TLS_LDXrr)
+ assert(TF == SparcMCExpr::VK_Sparc_TLS_IE_LDX &&
+ "Cannot handle target flags on ldx for TLS");
+ else if (MI->getOpcode() == SP::XORri || MI->getOpcode() == SP::XORXri)
+ assert((TF == SparcMCExpr::VK_Sparc_TLS_LDO_LOX10
+ || TF == SparcMCExpr::VK_Sparc_TLS_LE_LOX10) &&
+ "Cannot handle target flags on xor for TLS");
+ else
+ assert((TF == SparcMCExpr::VK_Sparc_LO
+ || TF == SparcMCExpr::VK_Sparc_M44
+ || TF == SparcMCExpr::VK_Sparc_L44
+ || TF == SparcMCExpr::VK_Sparc_HM
+ || TF == SparcMCExpr::VK_Sparc_TLS_GD_LO10
+ || TF == SparcMCExpr::VK_Sparc_TLS_LDM_LO10
+ || TF == SparcMCExpr::VK_Sparc_TLS_IE_LO10 ) &&
+ "Invalid target flags for small address operand");
}
+#endif
+
+
+ bool CloseParen = SparcMCExpr::printVariantKind(O, TF);
+
switch (MO.getType()) {
- case MachineOperand::MO_VirtualRegister:
- if (Value *V = MO.getVRegValueOrNull()) {
- O << "<" << V->getName() << ">";
- break;
- }
- // FALLTHROUGH
- case MachineOperand::MO_MachineRegister:
- if (MRegisterInfo::isPhysicalRegister(MO.getReg()))
- O << "%" << LowercaseString (RI.get(MO.getReg()).Name);
- else
- O << "%reg" << MO.getReg();
+ case MachineOperand::MO_Register:
+ O << "%" << StringRef(getRegisterName(MO.getReg())).lower();
break;
- case MachineOperand::MO_SignExtendedImmed:
- case MachineOperand::MO_UnextendedImmed:
- O << (int)MO.getImmedValue();
+ case MachineOperand::MO_Immediate:
+ O << (int)MO.getImm();
break;
- case MachineOperand::MO_MachineBasicBlock: {
- MachineBasicBlock *MBBOp = MO.getMachineBasicBlock();
- O << ".LBB" << Mang->getValueName(MBBOp->getParent()->getFunction())
- << "_" << MBBOp->getNumber () << "\t! "
- << MBBOp->getBasicBlock ()->getName ();
- return;
- }
- case MachineOperand::MO_PCRelativeDisp:
- std::cerr << "Shouldn't use addPCDisp() when building SparcV8 MachineInstrs";
- abort ();
+ case MachineOperand::MO_MachineBasicBlock:
+ O << *MO.getMBB()->getSymbol();
return;
case MachineOperand::MO_GlobalAddress:
- O << Mang->getValueName(MO.getGlobal());
+ O << *getSymbol(MO.getGlobal());
+ break;
+ case MachineOperand::MO_BlockAddress:
+ O << GetBlockAddressSymbol(MO.getBlockAddress())->getName();
break;
case MachineOperand::MO_ExternalSymbol:
O << MO.getSymbolName();
break;
case MachineOperand::MO_ConstantPoolIndex:
- O << ".CPI" << CurrentFnName << "_" << MO.getConstantPoolIndex();
+ O << DL->getPrivateGlobalPrefix() << "CPI" << getFunctionNumber() << "_"
+ << MO.getIndex();
break;
default:
- O << "<unknown operand type>"; abort (); break;
+ llvm_unreachable("<unknown operand type>");
}
if (CloseParen) O << ")";
}
-static bool isPseudoInstruction (const MachineInstr *MI) {
- switch (MI->getOpcode ()) {
- case V8::PHI:
- case V8::ADJCALLSTACKUP:
- case V8::ADJCALLSTACKDOWN:
- case V8::IMPLICIT_USE:
- case V8::IMPLICIT_DEF:
- return true;
- default:
- return false;
+void SparcAsmPrinter::printMemOperand(const MachineInstr *MI, int opNum,
+ raw_ostream &O, const char *Modifier) {
+ printOperand(MI, opNum, O);
+
+ // If this is an ADD operand, emit it like normal operands.
+ if (Modifier && !strcmp(Modifier, "arith")) {
+ O << ", ";
+ printOperand(MI, opNum+1, O);
+ return;
}
+
+ if (MI->getOperand(opNum+1).isReg() &&
+ MI->getOperand(opNum+1).getReg() == SP::G0)
+ return; // don't print "+%g0"
+ if (MI->getOperand(opNum+1).isImm() &&
+ MI->getOperand(opNum+1).getImm() == 0)
+ return; // don't print "+0"
+
+ O << "+";
+ printOperand(MI, opNum+1, O);
}
-/// printBaseOffsetPair - Print two consecutive operands of MI, starting at #i,
-/// which form a base + offset pair (which may have brackets around it, if
-/// brackets is true, or may be in the form base - constant, if offset is a
-/// negative constant).
+/// PrintAsmOperand - Print out an operand for an inline asm expression.
///
-void SparcV8AsmPrinter::printBaseOffsetPair (const MachineInstr *MI, int i) {
- O << "[";
- printOperand (MI, i);
- if (MI->getOperand (i + 1).isImmediate()) {
- int Val = (int) MI->getOperand (i + 1).getImmedValue ();
- if (Val != 0) {
- O << ((Val >= 0) ? " + " : " - ");
- O << ((Val >= 0) ? Val : -Val);
+bool SparcAsmPrinter::PrintAsmOperand(const MachineInstr *MI, unsigned 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:
+ // See if this is a generic print operand
+ return AsmPrinter::PrintAsmOperand(MI, OpNo, AsmVariant, ExtraCode, O);
+ case 'r':
+ break;
}
- } else {
- O << " + ";
- printOperand (MI, i + 1);
}
- O << "]";
-}
-/// printMachineInstruction -- Print out a single SparcV8 LLVM instruction
-/// MI in GAS syntax to the current output stream.
-///
-void SparcV8AsmPrinter::printMachineInstruction(const MachineInstr *MI) {
- O << "\t";
- if (printInstruction(MI)) return;
-
- unsigned Opcode = MI->getOpcode();
- const TargetInstrInfo &TII = *TM.getInstrInfo();
- const TargetInstrDescriptor &Desc = TII.get(Opcode);
-
- // If it's a pseudo-instruction, comment it out.
- if (isPseudoInstruction (MI))
- O << "! ";
-
- O << Desc.Name << " ";
-
- // print non-immediate, non-register-def operands
- // then print immediate operands
- // then print register-def operands.
- std::vector<int> print_order;
- for (unsigned i = 0; i < MI->getNumOperands (); ++i)
- if (!(MI->getOperand (i).isImmediate ()
- || (MI->getOperand (i).isRegister ()
- && MI->getOperand (i).isDef ())))
- print_order.push_back (i);
- for (unsigned i = 0; i < MI->getNumOperands (); ++i)
- if (MI->getOperand (i).isImmediate ())
- print_order.push_back (i);
- for (unsigned i = 0; i < MI->getNumOperands (); ++i)
- if (MI->getOperand (i).isRegister () && MI->getOperand (i).isDef ())
- print_order.push_back (i);
- for (unsigned i = 0, e = print_order.size (); i != e; ++i) {
- printOperand (MI, print_order[i]);
- if (i != (print_order.size () - 1))
- O << ", ";
- }
- O << "\n";
-}
+ printOperand(MI, OpNo, O);
-bool SparcV8AsmPrinter::doInitialization(Module &M) {
- Mang = new Mangler(M);
- return false; // success
+ return false;
}
-// SwitchSection - Switch to the specified section of the executable if we are
-// not already in it!
-//
-static void SwitchSection(std::ostream &OS, std::string &CurSection,
- const char *NewSection) {
- if (CurSection != NewSection) {
- CurSection = NewSection;
- if (!CurSection.empty())
- OS << "\t.section \"" << NewSection << "\"\n";
- }
+bool SparcAsmPrinter::PrintAsmMemoryOperand(const MachineInstr *MI,
+ unsigned OpNo, unsigned AsmVariant,
+ const char *ExtraCode,
+ raw_ostream &O) {
+ if (ExtraCode && ExtraCode[0])
+ return true; // Unknown modifier
+
+ O << '[';
+ printMemOperand(MI, OpNo, O);
+ O << ']';
+
+ return false;
}
-bool SparcV8AsmPrinter::doFinalization(Module &M) {
- const TargetData &TD = TM.getTargetData();
- std::string CurSection;
-
- // 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()) { // External global require no code
- O << "\n\n";
- std::string name = Mang->getValueName(I);
- Constant *C = I->getInitializer();
- unsigned Size = TD.getTypeSize(C->getType());
- unsigned Align = TD.getTypeAlignment(C->getType());
-
- if (C->isNullValue() &&
- (I->hasLinkOnceLinkage() || I->hasInternalLinkage() ||
- I->hasWeakLinkage() /* FIXME: Verify correct */)) {
- SwitchSection(O, CurSection, ".data");
- if (I->hasInternalLinkage())
- O << "\t.local " << name << "\n";
-
- O << "\t.comm " << name << "," << TD.getTypeSize(C->getType())
- << "," << (unsigned)TD.getTypeAlignment(C->getType());
- O << "\t\t! ";
- WriteAsOperand(O, I, true, true, &M);
- O << "\n";
- } else {
- switch (I->getLinkage()) {
- case GlobalValue::LinkOnceLinkage:
- case GlobalValue::WeakLinkage: // FIXME: Verify correct for weak.
- // Nonnull linkonce -> weak
- O << "\t.weak " << name << "\n";
- SwitchSection(O, CurSection, "");
- O << "\t.section\t\".llvm.linkonce.d." << name << "\",\"aw\",@progbits\n";
- 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 (C->isNullValue())
- SwitchSection(O, CurSection, ".bss");
- else
- SwitchSection(O, CurSection, ".data");
- break;
- case GlobalValue::GhostLinkage:
- std::cerr << "Should not have any unmaterialized functions!\n";
- abort();
- }
-
- O << "\t.align " << Align << "\n";
- O << "\t.type " << name << ",#object\n";
- O << "\t.size " << name << "," << Size << "\n";
- O << name << ":\t\t\t\t! ";
- WriteAsOperand(O, I, true, true, &M);
- O << " = ";
- WriteAsOperand(O, C, false, false, &M);
- O << "\n";
- emitGlobalConstant(C);
- }
+void SparcAsmPrinter::EmitEndOfAsmFile(Module &M) {
+ const TargetLoweringObjectFileELF &TLOFELF =
+ static_cast<const TargetLoweringObjectFileELF &>(getObjFileLowering());
+ MachineModuleInfoELF &MMIELF = MMI->getObjFileInfo<MachineModuleInfoELF>();
+
+ // Generate stubs for global variables.
+ MachineModuleInfoELF::SymbolListTy Stubs = MMIELF.GetGVStubList();
+ if (!Stubs.empty()) {
+ OutStreamer.SwitchSection(TLOFELF.getDataSection());
+ unsigned PtrSize = TM.getDataLayout()->getPointerSize(0);
+ for (unsigned i = 0, e = Stubs.size(); i != e; ++i) {
+ OutStreamer.EmitLabel(Stubs[i].first);
+ OutStreamer.EmitSymbolValue(Stubs[i].second.getPointer(), PtrSize);
}
+ }
+}
- delete Mang;
- return false; // success
+// Force static initialization.
+extern "C" void LLVMInitializeSparcAsmPrinter() {
+ RegisterAsmPrinter<SparcAsmPrinter> X(TheSparcTarget);
+ RegisterAsmPrinter<SparcAsmPrinter> Y(TheSparcV9Target);
}