1 //===-- PowerPCAsmPrinter.cpp - Print machine instrs to PowerPC assembly --===//
3 // The LLVM Compiler Infrastructure
5 // This file was developed by the LLVM research group and is distributed under
6 // the University of Illinois Open Source License. See LICENSE.TXT for details.
8 //===----------------------------------------------------------------------===//
10 // This file contains a printer that converts from our internal representation
11 // of machine-dependent LLVM code to PowerPC assembly language. This printer is
12 // the output mechanism used by `llc'.
14 // Documentation at http://developer.apple.com/documentation/DeveloperTools/
15 // Reference/Assembler/ASMIntroduction/chapter_1_section_1.html
17 //===----------------------------------------------------------------------===//
19 #define DEBUG_TYPE "asmprinter"
21 #include "PowerPCTargetMachine.h"
22 #include "PowerPCSubtarget.h"
23 #include "llvm/Constants.h"
24 #include "llvm/DerivedTypes.h"
25 #include "llvm/Module.h"
26 #include "llvm/Assembly/Writer.h"
27 #include "llvm/CodeGen/AsmPrinter.h"
28 #include "llvm/CodeGen/MachineConstantPool.h"
29 #include "llvm/CodeGen/MachineFunctionPass.h"
30 #include "llvm/CodeGen/MachineInstr.h"
31 #include "llvm/CodeGen/ValueTypes.h"
32 #include "llvm/Support/Mangler.h"
33 #include "llvm/Support/MathExtras.h"
34 #include "llvm/Support/CommandLine.h"
35 #include "llvm/Support/Debug.h"
36 #include "llvm/Target/MRegisterInfo.h"
37 #include "llvm/Target/TargetInstrInfo.h"
38 #include "llvm/ADT/Statistic.h"
39 #include "llvm/ADT/StringExtras.h"
44 Statistic<> EmittedInsts("asm-printer", "Number of machine instrs printed");
46 struct PowerPCAsmPrinter : public AsmPrinter {
47 std::set<std::string> FnStubs, GVStubs, LinkOnceStubs;
49 PowerPCAsmPrinter(std::ostream &O, TargetMachine &TM)
50 : AsmPrinter(O, TM), LabelNumber(0) {}
52 /// Unique incrementer for label values for referencing Global values.
56 virtual const char *getPassName() const {
57 return "PowerPC Assembly Printer";
60 PowerPCTargetMachine &getTM() {
61 return static_cast<PowerPCTargetMachine&>(TM);
64 unsigned enumRegToMachineReg(unsigned enumReg) {
66 default: assert(0 && "Unhandled register!"); break;
67 case PPC::CR0: return 0;
68 case PPC::CR1: return 1;
69 case PPC::CR2: return 2;
70 case PPC::CR3: return 3;
71 case PPC::CR4: return 4;
72 case PPC::CR5: return 5;
73 case PPC::CR6: return 6;
74 case PPC::CR7: return 7;
79 /// printInstruction - This method is automatically generated by tablegen
80 /// from the instruction set description. This method returns true if the
81 /// machine instruction was sufficiently described to print it, otherwise it
83 bool printInstruction(const MachineInstr *MI);
85 void printMachineInstruction(const MachineInstr *MI);
86 void printOp(const MachineOperand &MO, bool IsCallOp = false);
88 void printOperand(const MachineInstr *MI, unsigned OpNo, MVT::ValueType VT){
89 const MachineOperand &MO = MI->getOperand(OpNo);
90 if (MO.getType() == MachineOperand::MO_MachineRegister) {
91 assert(MRegisterInfo::isPhysicalRegister(MO.getReg())&&"Not physreg??");
92 O << TM.getRegisterInfo()->get(MO.getReg()).Name;
93 } else if (MO.isImmediate()) {
94 O << MO.getImmedValue();
100 void printU5ImmOperand(const MachineInstr *MI, unsigned OpNo,
102 unsigned char value = MI->getOperand(OpNo).getImmedValue();
103 assert(value <= 31 && "Invalid u5imm argument!");
104 O << (unsigned int)value;
106 void printU6ImmOperand(const MachineInstr *MI, unsigned OpNo,
108 unsigned char value = MI->getOperand(OpNo).getImmedValue();
109 assert(value <= 63 && "Invalid u6imm argument!");
110 O << (unsigned int)value;
112 void printS16ImmOperand(const MachineInstr *MI, unsigned OpNo,
114 O << (short)MI->getOperand(OpNo).getImmedValue();
116 void printU16ImmOperand(const MachineInstr *MI, unsigned OpNo,
118 O << (unsigned short)MI->getOperand(OpNo).getImmedValue();
120 void printBranchOperand(const MachineInstr *MI, unsigned OpNo,
122 // Branches can take an immediate operand. This is used by the branch
123 // selection pass to print $+8, an eight byte displacement from the PC.
124 if (MI->getOperand(OpNo).isImmediate()) {
125 O << "$+" << MI->getOperand(OpNo).getImmedValue();
127 printOp(MI->getOperand(OpNo),
128 TM.getInstrInfo()->isCall(MI->getOpcode()));
131 void printPICLabel(const MachineInstr *MI, unsigned OpNo,
133 // FIXME: should probably be converted to cout.width and cout.fill
134 O << "\"L0000" << LabelNumber << "$pb\"\n";
135 O << "\"L0000" << LabelNumber << "$pb\":";
137 void printSymbolHi(const MachineInstr *MI, unsigned OpNo,
139 if (MI->getOperand(OpNo).isImmediate()) {
140 printS16ImmOperand(MI, OpNo, VT);
143 printOp(MI->getOperand(OpNo));
145 O << "-\"L0000" << LabelNumber << "$pb\")";
150 void printSymbolLo(const MachineInstr *MI, unsigned OpNo,
152 if (MI->getOperand(OpNo).isImmediate()) {
153 printS16ImmOperand(MI, OpNo, VT);
156 printOp(MI->getOperand(OpNo));
158 O << "-\"L0000" << LabelNumber << "$pb\")";
163 void printcrbit(const MachineInstr *MI, unsigned OpNo,
165 unsigned char value = MI->getOperand(OpNo).getImmedValue();
166 assert(value <= 3 && "Invalid crbit argument!");
167 unsigned CCReg = MI->getOperand(OpNo-1).getReg();
168 unsigned RegNo = enumRegToMachineReg(CCReg);
169 O << 4 * RegNo + value;
171 void printcrbitm(const MachineInstr *MI, unsigned OpNo,
173 unsigned CCReg = MI->getOperand(OpNo).getReg();
174 unsigned RegNo = enumRegToMachineReg(CCReg);
175 O << (0x80 >> RegNo);
178 virtual void printConstantPool(MachineConstantPool *MCP) = 0;
179 virtual bool runOnMachineFunction(MachineFunction &F) = 0;
180 virtual bool doFinalization(Module &M) = 0;
183 /// DarwinAsmPrinter - PowerPC assembly printer, customized for Darwin/Mac OS
186 struct DarwinAsmPrinter : public PowerPCAsmPrinter {
188 DarwinAsmPrinter(std::ostream &O, TargetMachine &TM)
189 : PowerPCAsmPrinter(O, TM) {
192 ZeroDirective = "\t.space\t"; // ".space N" emits N zeros.
193 Data64bitsDirective = 0; // we can't emit a 64-bit unit
194 AlignmentIsInBytes = false; // Alignment is by power of 2.
197 virtual const char *getPassName() const {
198 return "Darwin PPC Assembly Printer";
201 void printConstantPool(MachineConstantPool *MCP);
202 bool runOnMachineFunction(MachineFunction &F);
203 bool doInitialization(Module &M);
204 bool doFinalization(Module &M);
207 /// AIXAsmPrinter - PowerPC assembly printer, customized for AIX
209 struct AIXAsmPrinter : public PowerPCAsmPrinter {
210 /// Map for labels corresponding to global variables
212 std::map<const GlobalVariable*,std::string> GVToLabelMap;
214 AIXAsmPrinter(std::ostream &O, TargetMachine &TM)
215 : PowerPCAsmPrinter(O, TM) {
218 ZeroDirective = "\t.space\t"; // ".space N" emits N zeros.
219 Data64bitsDirective = 0; // we can't emit a 64-bit unit
220 AlignmentIsInBytes = false; // Alignment is by power of 2.
223 virtual const char *getPassName() const {
224 return "AIX PPC Assembly Printer";
227 void printConstantPool(MachineConstantPool *MCP);
228 bool runOnMachineFunction(MachineFunction &F);
229 bool doInitialization(Module &M);
230 bool doFinalization(Module &M);
232 } // end of anonymous namespace
234 // SwitchSection - Switch to the specified section of the executable if we are
235 // not already in it!
237 static void SwitchSection(std::ostream &OS, std::string &CurSection,
238 const char *NewSection) {
239 if (CurSection != NewSection) {
240 CurSection = NewSection;
241 if (!CurSection.empty())
242 OS << "\t" << NewSection << "\n";
246 /// createDarwinAsmPrinterPass - Returns a pass that prints the PPC assembly
247 /// code for a MachineFunction to the given output stream, in a format that the
248 /// Darwin assembler can deal with.
250 FunctionPass *llvm::createDarwinAsmPrinter(std::ostream &o, TargetMachine &tm) {
251 return new DarwinAsmPrinter(o, tm);
254 /// createAIXAsmPrinterPass - Returns a pass that prints the PPC assembly code
255 /// for a MachineFunction to the given output stream, in a format that the
256 /// AIX 5L assembler can deal with.
258 FunctionPass *llvm::createAIXAsmPrinter(std::ostream &o, TargetMachine &tm) {
259 return new AIXAsmPrinter(o, tm);
262 // Include the auto-generated portion of the assembly writer
263 #include "PowerPCGenAsmWriter.inc"
265 void PowerPCAsmPrinter::printOp(const MachineOperand &MO, bool IsCallOp) {
266 const MRegisterInfo &RI = *TM.getRegisterInfo();
269 switch (MO.getType()) {
270 case MachineOperand::MO_VirtualRegister:
271 if (Value *V = MO.getVRegValueOrNull()) {
272 O << "<" << V->getName() << ">";
276 case MachineOperand::MO_MachineRegister:
277 case MachineOperand::MO_CCRegister:
278 O << RI.get(MO.getReg()).Name;
281 case MachineOperand::MO_SignExtendedImmed:
282 case MachineOperand::MO_UnextendedImmed:
283 std::cerr << "printOp() does not handle immediate values\n";
287 case MachineOperand::MO_PCRelativeDisp:
288 std::cerr << "Shouldn't use addPCDisp() when building PPC MachineInstrs";
292 case MachineOperand::MO_MachineBasicBlock: {
293 MachineBasicBlock *MBBOp = MO.getMachineBasicBlock();
294 O << ".LBB" << Mang->getValueName(MBBOp->getParent()->getFunction())
295 << "_" << MBBOp->getNumber() << "\t; "
296 << MBBOp->getBasicBlock()->getName();
300 case MachineOperand::MO_ConstantPoolIndex:
301 O << ".CPI" << CurrentFnName << "_" << MO.getConstantPoolIndex();
304 case MachineOperand::MO_ExternalSymbol:
306 std::string Name(GlobalPrefix); Name += MO.getSymbolName();
307 FnStubs.insert(Name);
308 O << "L" << Name << "$stub";
311 O << GlobalPrefix << MO.getSymbolName();
314 case MachineOperand::MO_GlobalAddress: {
315 GlobalValue *GV = MO.getGlobal();
316 std::string Name = Mang->getValueName(GV);
318 // Dynamically-resolved functions need a stub for the function. Be
319 // wary however not to output $stub for external functions whose addresses
320 // are taken. Those should be emitted as $non_lazy_ptr below.
321 Function *F = dyn_cast<Function>(GV);
322 if (F && IsCallOp && F->isExternal()) {
323 FnStubs.insert(Name);
324 O << "L" << Name << "$stub";
328 // External or weakly linked global variables need non-lazily-resolved stubs
329 if ((GV->isExternal() || GV->hasWeakLinkage() || GV->hasLinkOnceLinkage())){
330 if (GV->hasLinkOnceLinkage())
331 LinkOnceStubs.insert(Name);
333 GVStubs.insert(Name);
334 O << "L" << Name << "$non_lazy_ptr";
338 O << Mang->getValueName(GV);
343 O << "<unknown operand type: " << MO.getType() << ">";
348 /// printMachineInstruction -- Print out a single PowerPC MI in Darwin syntax to
349 /// the current output stream.
351 void PowerPCAsmPrinter::printMachineInstruction(const MachineInstr *MI) {
353 // Check for slwi/srwi mnemonics.
354 if (MI->getOpcode() == PPC::RLWINM) {
355 bool FoundMnemonic = false;
356 unsigned char SH = MI->getOperand(2).getImmedValue();
357 unsigned char MB = MI->getOperand(3).getImmedValue();
358 unsigned char ME = MI->getOperand(4).getImmedValue();
359 if (SH <= 31 && MB == 0 && ME == (31-SH)) {
360 O << "slwi "; FoundMnemonic = true;
362 if (SH <= 31 && MB == (32-SH) && ME == 31) {
363 O << "srwi "; FoundMnemonic = true;
367 printOperand(MI, 0, MVT::i64);
369 printOperand(MI, 1, MVT::i64);
370 O << ", " << (unsigned int)SH << "\n";
375 if (printInstruction(MI))
376 return; // Printer was automatically generated
378 assert(0 && "Unhandled instruction in asm writer!");
383 /// runOnMachineFunction - This uses the printMachineInstruction()
384 /// method to print assembly for each instruction.
386 bool DarwinAsmPrinter::runOnMachineFunction(MachineFunction &MF) {
387 setupMachineFunction(MF);
390 // Print out constants referenced by the function
391 printConstantPool(MF.getConstantPool());
393 // Print out labels for the function.
396 O << "\t.globl\t" << CurrentFnName << "\n";
397 O << CurrentFnName << ":\n";
399 // Print out code for the function.
400 for (MachineFunction::const_iterator I = MF.begin(), E = MF.end();
402 // Print a label for the basic block.
403 if (I != MF.begin()) {
404 O << ".LBB" << CurrentFnName << "_" << I->getNumber() << ":\t";
405 if (!I->getBasicBlock()->getName().empty())
406 O << CommentString << " " << I->getBasicBlock()->getName();
409 for (MachineBasicBlock::const_iterator II = I->begin(), E = I->end();
411 // Print the assembly for the instruction.
413 printMachineInstruction(II);
418 // We didn't modify anything.
422 /// printConstantPool - Print to the current output stream assembly
423 /// representations of the constants in the constant pool MCP. This is
424 /// used to print out constants which have been "spilled to memory" by
425 /// the code generator.
427 void DarwinAsmPrinter::printConstantPool(MachineConstantPool *MCP) {
428 const std::vector<Constant*> &CP = MCP->getConstants();
429 const TargetData &TD = TM.getTargetData();
431 if (CP.empty()) return;
433 for (unsigned i = 0, e = CP.size(); i != e; ++i) {
435 // FIXME: force doubles to be naturally aligned. We should handle this
436 // more correctly in the future.
437 if (Type::DoubleTy == CP[i]->getType())
440 emitAlignment(TD.getTypeAlignmentShift(CP[i]->getType()));
441 O << ".CPI" << CurrentFnName << "_" << i << ":\t\t\t\t\t" << CommentString
443 emitGlobalConstant(CP[i]);
447 bool DarwinAsmPrinter::doInitialization(Module &M) {
448 if (TM.getSubtarget<PPCSubtarget>().isGigaProcessor())
449 O << "\t.machine ppc970\n";
450 AsmPrinter::doInitialization(M);
454 bool DarwinAsmPrinter::doFinalization(Module &M) {
455 const TargetData &TD = TM.getTargetData();
456 std::string CurSection;
458 // Print out module-level global variables here.
459 for (Module::const_global_iterator I = M.global_begin(), E = M.global_end(); I != E; ++I)
460 if (I->hasInitializer()) { // External global require no code
462 std::string name = Mang->getValueName(I);
463 Constant *C = I->getInitializer();
464 unsigned Size = TD.getTypeSize(C->getType());
465 unsigned Align = TD.getTypeAlignmentShift(C->getType());
467 if (C->isNullValue() && /* FIXME: Verify correct */
468 (I->hasInternalLinkage() || I->hasWeakLinkage() ||
469 I->hasLinkOnceLinkage())) {
470 SwitchSection(O, CurSection, ".data");
471 if (Size == 0) Size = 1; // .comm Foo, 0 is undefined, avoid it.
472 if (I->hasInternalLinkage())
473 O << ".lcomm " << name << "," << Size << "," << Align;
475 O << ".comm " << name << "," << Size;
477 WriteAsOperand(O, I, true, true, &M);
480 switch (I->getLinkage()) {
481 case GlobalValue::LinkOnceLinkage:
482 O << ".section __TEXT,__textcoal_nt,coalesced,no_toc\n"
483 << ".weak_definition " << name << '\n'
484 << ".private_extern " << name << '\n'
485 << ".section __DATA,__datacoal_nt,coalesced,no_toc\n";
486 LinkOnceStubs.insert(name);
488 case GlobalValue::WeakLinkage:
489 O << ".weak_definition " << name << '\n'
490 << ".private_extern " << name << '\n';
492 case GlobalValue::AppendingLinkage:
493 // FIXME: appending linkage variables should go into a section of
494 // their name or something. For now, just emit them as external.
495 case GlobalValue::ExternalLinkage:
496 // If external or appending, declare as a global symbol
497 O << "\t.globl " << name << "\n";
499 case GlobalValue::InternalLinkage:
500 SwitchSection(O, CurSection, ".data");
502 case GlobalValue::GhostLinkage:
503 std::cerr << "Error: unmaterialized (GhostLinkage) function in asm!";
507 emitAlignment(Align);
508 O << name << ":\t\t\t\t; ";
509 WriteAsOperand(O, I, true, true, &M);
511 WriteAsOperand(O, C, false, false, &M);
513 emitGlobalConstant(C);
517 // Output stubs for dynamically-linked functions
518 for (std::set<std::string>::iterator i = FnStubs.begin(), e = FnStubs.end();
523 O << ".section __TEXT,__picsymbolstub1,symbol_stubs,pure_instructions,32\n";
525 O << "L" << *i << "$stub:\n";
526 O << "\t.indirect_symbol " << *i << "\n";
528 O << "\tbcl 20,31,L0$" << *i << "\n";
529 O << "L0$" << *i << ":\n";
531 O << "\taddis r11,r11,ha16(L" << *i << "$lazy_ptr-L0$" << *i << ")\n";
533 O << "\tlwzu r12,lo16(L" << *i << "$lazy_ptr-L0$" << *i << ")(r11)\n";
534 O << "\tmtctr r12\n";
537 O << ".lazy_symbol_pointer\n";
538 O << "L" << *i << "$lazy_ptr:\n";
539 O << "\t.indirect_symbol " << *i << "\n";
540 O << "\t.long dyld_stub_binding_helper\n";
542 O << "\t.section __TEXT,__symbol_stub1,symbol_stubs,pure_instructions,16\n";
544 O << "L" << *i << "$stub:\n";
545 O << "\t.indirect_symbol " << *i << "\n";
546 O << "\tlis r11,ha16(L" << *i << "$lazy_ptr)\n";
547 O << "\tlwzu r12,lo16(L" << *i << "$lazy_ptr)(r11)\n";
548 O << "\tmtctr r12\n";
550 O << "\t.lazy_symbol_pointer\n";
551 O << "L" << *i << "$lazy_ptr:\n";
552 O << "\t.indirect_symbol " << *i << "\n";
553 O << "\t.long dyld_stub_binding_helper\n";
559 // Output stubs for external global variables
560 if (GVStubs.begin() != GVStubs.end())
561 O << ".data\n.non_lazy_symbol_pointer\n";
562 for (std::set<std::string>::iterator i = GVStubs.begin(), e = GVStubs.end();
564 O << "L" << *i << "$non_lazy_ptr:\n";
565 O << "\t.indirect_symbol " << *i << "\n";
569 // Output stubs for link-once variables
570 if (LinkOnceStubs.begin() != LinkOnceStubs.end())
571 O << ".data\n.align 2\n";
572 for (std::set<std::string>::iterator i = LinkOnceStubs.begin(),
573 e = LinkOnceStubs.end(); i != e; ++i) {
574 O << "L" << *i << "$non_lazy_ptr:\n"
575 << "\t.long\t" << *i << '\n';
578 AsmPrinter::doFinalization(M);
579 return false; // success
582 /// runOnMachineFunction - This uses the printMachineInstruction()
583 /// method to print assembly for each instruction.
585 bool AIXAsmPrinter::runOnMachineFunction(MachineFunction &MF) {
586 CurrentFnName = MF.getFunction()->getName();
588 // Print out constants referenced by the function
589 printConstantPool(MF.getConstantPool());
591 // Print out header for the function.
592 O << "\t.csect .text[PR]\n"
594 << "\t.globl " << CurrentFnName << '\n'
595 << "\t.globl ." << CurrentFnName << '\n'
596 << "\t.csect " << CurrentFnName << "[DS],3\n"
597 << CurrentFnName << ":\n"
598 << "\t.llong ." << CurrentFnName << ", TOC[tc0], 0\n"
599 << "\t.csect .text[PR]\n"
600 << '.' << CurrentFnName << ":\n";
602 // Print out code for the function.
603 for (MachineFunction::const_iterator I = MF.begin(), E = MF.end();
605 // Print a label for the basic block.
606 O << "LBB" << CurrentFnName << "_" << I->getNumber() << ":\t# "
607 << I->getBasicBlock()->getName() << "\n";
608 for (MachineBasicBlock::const_iterator II = I->begin(), E = I->end();
610 // Print the assembly for the instruction.
612 printMachineInstruction(II);
617 O << "LT.." << CurrentFnName << ":\n"
619 << "\t.byte 0,0,32,65,128,0,0,0\n"
620 << "\t.long LT.." << CurrentFnName << "-." << CurrentFnName << '\n'
622 << "\t.byte \"" << CurrentFnName << "\"\n"
625 // We didn't modify anything.
629 /// printConstantPool - Print to the current output stream assembly
630 /// representations of the constants in the constant pool MCP. This is
631 /// used to print out constants which have been "spilled to memory" by
632 /// the code generator.
634 void AIXAsmPrinter::printConstantPool(MachineConstantPool *MCP) {
635 const std::vector<Constant*> &CP = MCP->getConstants();
636 const TargetData &TD = TM.getTargetData();
638 if (CP.empty()) return;
640 for (unsigned i = 0, e = CP.size(); i != e; ++i) {
642 O << "\t.align " << (unsigned)TD.getTypeAlignment(CP[i]->getType())
644 O << ".CPI" << CurrentFnName << "_" << i << ":\t\t\t\t\t;"
646 emitGlobalConstant(CP[i]);
650 bool AIXAsmPrinter::doInitialization(Module &M) {
651 const TargetData &TD = TM.getTargetData();
652 std::string CurSection;
654 O << "\t.machine \"ppc64\"\n"
656 << "\t.csect .text[PR]\n";
658 // Print out module-level global variables
659 for (Module::const_global_iterator I = M.global_begin(), E = M.global_end();
661 if (!I->hasInitializer())
664 std::string Name = I->getName();
665 Constant *C = I->getInitializer();
666 // N.B.: We are defaulting to writable strings
667 if (I->hasExternalLinkage()) {
668 O << "\t.globl " << Name << '\n'
669 << "\t.csect .data[RW],3\n";
671 O << "\t.csect _global.rw_c[RW],3\n";
674 emitGlobalConstant(C);
677 // Output labels for globals
678 if (M.global_begin() != M.global_end()) O << "\t.toc\n";
679 for (Module::const_global_iterator I = M.global_begin(), E = M.global_end();
681 const GlobalVariable *GV = I;
682 // Do not output labels for unused variables
683 if (GV->isExternal() && GV->use_begin() == GV->use_end())
686 std::string Name = GV->getName();
687 std::string Label = "LC.." + utostr(LabelNumber++);
688 GVToLabelMap[GV] = Label;
690 << "\t.tc " << Name << "[TC]," << Name;
691 if (GV->isExternal()) O << "[RW]";
695 Mang = new Mangler(M, ".");
696 return false; // success
699 bool AIXAsmPrinter::doFinalization(Module &M) {
700 const TargetData &TD = TM.getTargetData();
701 // Print out module-level global variables
702 for (Module::const_global_iterator I = M.global_begin(), E = M.global_end();
704 if (I->hasInitializer() || I->hasExternalLinkage())
707 std::string Name = I->getName();
708 if (I->hasInternalLinkage()) {
709 O << "\t.lcomm " << Name << ",16,_global.bss_c";
711 O << "\t.comm " << Name << "," << TD.getTypeSize(I->getType())
712 << "," << Log2_32((unsigned)TD.getTypeAlignment(I->getType()));
715 WriteAsOperand(O, I, true, true, &M);
719 O << "_section_.text:\n"
720 << "\t.csect .data[RW],3\n"
721 << "\t.llong _section_.text\n";
724 return false; // success