X-Git-Url: http://demsky.eecs.uci.edu/git/?a=blobdiff_plain;f=lib%2FTarget%2FPowerPC%2FPPCAsmPrinter.cpp;h=717b831086d39ef2a8899adfb5de45c3a98ebfb2;hb=88276b887c426cf5d998b705a14663bfa38f8efd;hp=10a6dbce728c1683d0320f31bad5a3de354f6aa2;hpb=9dc4d3cbac284b8301832fb1b575364490c745f3;p=oota-llvm.git diff --git a/lib/Target/PowerPC/PPCAsmPrinter.cpp b/lib/Target/PowerPC/PPCAsmPrinter.cpp index 10a6dbce728..717b831086d 100644 --- a/lib/Target/PowerPC/PPCAsmPrinter.cpp +++ b/lib/Target/PowerPC/PPCAsmPrinter.cpp @@ -1,4 +1,4 @@ -//===-- PowerPCAsmPrinter.cpp - Print machine instrs to PowerPC assembly --===// +//===-- PPCAsmPrinter.cpp - Print machine instrs to PowerPC assembly --------=// // // The LLVM Compiler Infrastructure // @@ -17,18 +17,17 @@ //===----------------------------------------------------------------------===// #define DEBUG_TYPE "asmprinter" -#include "PowerPC.h" -#include "PowerPCTargetMachine.h" -#include "PowerPCSubtarget.h" +#include "PPC.h" +#include "PPCTargetMachine.h" +#include "PPCSubtarget.h" #include "llvm/Constants.h" #include "llvm/DerivedTypes.h" #include "llvm/Module.h" #include "llvm/Assembly/Writer.h" #include "llvm/CodeGen/AsmPrinter.h" -#include "llvm/CodeGen/MachineConstantPool.h" +#include "llvm/CodeGen/MachineDebugInfo.h" #include "llvm/CodeGen/MachineFunctionPass.h" #include "llvm/CodeGen/MachineInstr.h" -#include "llvm/CodeGen/ValueTypes.h" #include "llvm/Support/Mangler.h" #include "llvm/Support/MathExtras.h" #include "llvm/Support/CommandLine.h" @@ -43,22 +42,19 @@ using namespace llvm; namespace { Statistic<> EmittedInsts("asm-printer", "Number of machine instrs printed"); - struct PowerPCAsmPrinter : public AsmPrinter { - std::set FnStubs, GVStubs, LinkOnceStubs; - - PowerPCAsmPrinter(std::ostream &O, TargetMachine &TM) - : AsmPrinter(O, TM), LabelNumber(0) {} - - /// Unique incrementer for label values for referencing Global values. - /// - unsigned LabelNumber; + class PPCAsmPrinter : public AsmPrinter { + public: + std::set FnStubs, GVStubs; + + PPCAsmPrinter(std::ostream &O, TargetMachine &TM) + : AsmPrinter(O, TM) {} virtual const char *getPassName() const { return "PowerPC Assembly Printer"; } - PowerPCTargetMachine &getTM() { - return static_cast(TM); + PPCTargetMachine &getTM() { + return static_cast(TM); } unsigned enumRegToMachineReg(unsigned enumReg) { @@ -83,9 +79,9 @@ namespace { bool printInstruction(const MachineInstr *MI); void printMachineInstruction(const MachineInstr *MI); - void printOp(const MachineOperand &MO, bool IsCallOp = false); + void printOp(const MachineOperand &MO); - void printOperand(const MachineInstr *MI, unsigned OpNo, MVT::ValueType VT){ + void printOperand(const MachineInstr *MI, unsigned OpNo){ const MachineOperand &MO = MI->getOperand(OpNo); if (MO.getType() == MachineOperand::MO_MachineRegister) { assert(MRegisterInfo::isPhysicalRegister(MO.getReg())&&"Not physreg??"); @@ -97,85 +93,114 @@ namespace { } } - void printU5ImmOperand(const MachineInstr *MI, unsigned OpNo, - MVT::ValueType VT) { + void printU5ImmOperand(const MachineInstr *MI, unsigned OpNo) { unsigned char value = MI->getOperand(OpNo).getImmedValue(); assert(value <= 31 && "Invalid u5imm argument!"); O << (unsigned int)value; } - void printU6ImmOperand(const MachineInstr *MI, unsigned OpNo, - MVT::ValueType VT) { + void printU6ImmOperand(const MachineInstr *MI, unsigned OpNo) { unsigned char value = MI->getOperand(OpNo).getImmedValue(); assert(value <= 63 && "Invalid u6imm argument!"); O << (unsigned int)value; } - void printS16ImmOperand(const MachineInstr *MI, unsigned OpNo, - MVT::ValueType VT) { + void printS16ImmOperand(const MachineInstr *MI, unsigned OpNo) { O << (short)MI->getOperand(OpNo).getImmedValue(); } - void printU16ImmOperand(const MachineInstr *MI, unsigned OpNo, - MVT::ValueType VT) { + void printU16ImmOperand(const MachineInstr *MI, unsigned OpNo) { O << (unsigned short)MI->getOperand(OpNo).getImmedValue(); } - void printBranchOperand(const MachineInstr *MI, unsigned OpNo, - MVT::ValueType VT) { + void printS16X4ImmOperand(const MachineInstr *MI, unsigned OpNo) { + O << (short)MI->getOperand(OpNo).getImmedValue()*4; + } + 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).getImmedValue(); } else { - printOp(MI->getOperand(OpNo), - TM.getInstrInfo()->isCall(MI->getOpcode())); + printOp(MI->getOperand(OpNo)); + } + } + void printCallOperand(const MachineInstr *MI, unsigned OpNo) { + const MachineOperand &MO = MI->getOperand(OpNo); + if (!PPCGenerateStaticCode) { + if (MO.getType() == MachineOperand::MO_GlobalAddress) { + GlobalValue *GV = MO.getGlobal(); + if (((GV->isExternal() || GV->hasWeakLinkage() || + GV->hasLinkOnceLinkage()))) { + // Dynamically-resolved functions need a stub for the function. + std::string Name = Mang->getValueName(GV); + FnStubs.insert(Name); + O << "L" << Name << "$stub"; + return; + } + } + if (MO.getType() == MachineOperand::MO_ExternalSymbol) { + std::string Name(GlobalPrefix); Name += MO.getSymbolName(); + FnStubs.insert(Name); + O << "L" << Name << "$stub"; + return; + } } + + printOp(MI->getOperand(OpNo)); + } + void printAbsAddrOperand(const MachineInstr *MI, unsigned OpNo) { + O << (int)MI->getOperand(OpNo).getImmedValue()*4; } - void printPICLabel(const MachineInstr *MI, unsigned OpNo, - MVT::ValueType VT) { - // FIXME: should probably be converted to cout.width and cout.fill - O << "\"L0000" << LabelNumber << "$pb\"\n"; - O << "\"L0000" << LabelNumber << "$pb\":"; + void printPICLabel(const MachineInstr *MI, unsigned OpNo) { + O << "\"L" << getFunctionNumber() << "$pb\"\n"; + O << "\"L" << getFunctionNumber() << "$pb\":"; } - void printSymbolHi(const MachineInstr *MI, unsigned OpNo, - MVT::ValueType VT) { + void printSymbolHi(const MachineInstr *MI, unsigned OpNo) { if (MI->getOperand(OpNo).isImmediate()) { - printS16ImmOperand(MI, OpNo, VT); + printS16ImmOperand(MI, OpNo); } else { O << "ha16("; printOp(MI->getOperand(OpNo)); if (PICEnabled) - O << "-\"L0000" << LabelNumber << "$pb\")"; + O << "-\"L" << getFunctionNumber() << "$pb\")"; else O << ')'; } } - void printSymbolLo(const MachineInstr *MI, unsigned OpNo, - MVT::ValueType VT) { + void printSymbolLo(const MachineInstr *MI, unsigned OpNo) { if (MI->getOperand(OpNo).isImmediate()) { - printS16ImmOperand(MI, OpNo, VT); + printS16ImmOperand(MI, OpNo); } else { O << "lo16("; printOp(MI->getOperand(OpNo)); if (PICEnabled) - O << "-\"L0000" << LabelNumber << "$pb\")"; + O << "-\"L" << getFunctionNumber() << "$pb\")"; else O << ')'; } } - void printcrbit(const MachineInstr *MI, unsigned OpNo, - MVT::ValueType VT) { - unsigned char value = MI->getOperand(OpNo).getImmedValue(); - assert(value <= 3 && "Invalid crbit argument!"); - unsigned CCReg = MI->getOperand(OpNo-1).getReg(); - unsigned RegNo = enumRegToMachineReg(CCReg); - O << 4 * RegNo + value; - } - void printcrbitm(const MachineInstr *MI, unsigned OpNo, - MVT::ValueType VT) { + void printcrbitm(const MachineInstr *MI, unsigned OpNo) { unsigned CCReg = MI->getOperand(OpNo).getReg(); unsigned RegNo = enumRegToMachineReg(CCReg); O << (0x80 >> RegNo); } - - virtual void printConstantPool(MachineConstantPool *MCP) = 0; + // The new addressing mode printers, currently empty + void printMemRegImm(const MachineInstr *MI, unsigned OpNo) { + printSymbolLo(MI, OpNo); + O << '('; + 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); + if (MO.getReg() == PPC::R0) + O << '0'; + else + O << TM.getRegisterInfo()->get(MO.getReg()).Name; + O << ", "; + printOperand(MI, OpNo+1); + } + virtual bool runOnMachineFunction(MachineFunction &F) = 0; virtual bool doFinalization(Module &M) = 0; }; @@ -183,22 +208,26 @@ namespace { /// DarwinAsmPrinter - PowerPC assembly printer, customized for Darwin/Mac OS /// X /// - struct DarwinAsmPrinter : public PowerPCAsmPrinter { + struct DarwinAsmPrinter : public PPCAsmPrinter { DarwinAsmPrinter(std::ostream &O, TargetMachine &TM) - : PowerPCAsmPrinter(O, TM) { + : PPCAsmPrinter(O, TM) { CommentString = ";"; GlobalPrefix = "_"; + PrivateGlobalPrefix = "L"; // Marker for constant pool idxs ZeroDirective = "\t.space\t"; // ".space N" emits N zeros. Data64bitsDirective = 0; // we can't emit a 64-bit unit AlignmentIsInBytes = false; // Alignment is by power of 2. + ConstantPoolSection = "\t.const\t"; + LCOMMDirective = "\t.lcomm\t"; + StaticCtorsSection = ".mod_init_func"; + StaticDtorsSection = ".mod_term_func"; } virtual const char *getPassName() const { return "Darwin PPC Assembly Printer"; } - - void printConstantPool(MachineConstantPool *MCP); + bool runOnMachineFunction(MachineFunction &F); bool doInitialization(Module &M); bool doFinalization(Module &M); @@ -206,43 +235,31 @@ namespace { /// AIXAsmPrinter - PowerPC assembly printer, customized for AIX /// - struct AIXAsmPrinter : public PowerPCAsmPrinter { + struct AIXAsmPrinter : public PPCAsmPrinter { /// Map for labels corresponding to global variables /// std::map GVToLabelMap; AIXAsmPrinter(std::ostream &O, TargetMachine &TM) - : PowerPCAsmPrinter(O, TM) { + : PPCAsmPrinter(O, TM) { CommentString = "#"; - GlobalPrefix = "_"; + GlobalPrefix = "."; ZeroDirective = "\t.space\t"; // ".space N" emits N zeros. Data64bitsDirective = 0; // we can't emit a 64-bit unit AlignmentIsInBytes = false; // Alignment is by power of 2. + ConstantPoolSection = "\t.const\t"; } virtual const char *getPassName() const { return "AIX PPC Assembly Printer"; } - void printConstantPool(MachineConstantPool *MCP); bool runOnMachineFunction(MachineFunction &F); bool doInitialization(Module &M); bool doFinalization(Module &M); }; } // end of anonymous namespace -// 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" << NewSection << "\n"; - } -} - /// createDarwinAsmPrinterPass - 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. @@ -260,9 +277,9 @@ FunctionPass *llvm::createAIXAsmPrinter(std::ostream &o, TargetMachine &tm) { } // Include the auto-generated portion of the assembly writer -#include "PowerPCGenAsmWriter.inc" +#include "PPCGenAsmWriter.inc" -void PowerPCAsmPrinter::printOp(const MachineOperand &MO, bool IsCallOp) { +void PPCAsmPrinter::printOp(const MachineOperand &MO) { const MRegisterInfo &RI = *TM.getRegisterInfo(); int new_symbol; @@ -291,51 +308,41 @@ void PowerPCAsmPrinter::printOp(const MachineOperand &MO, bool IsCallOp) { case MachineOperand::MO_MachineBasicBlock: { MachineBasicBlock *MBBOp = MO.getMachineBasicBlock(); - O << ".LBB" << Mang->getValueName(MBBOp->getParent()->getFunction()) - << "_" << MBBOp->getNumber() << "\t; " - << MBBOp->getBasicBlock()->getName(); + O << PrivateGlobalPrefix << "BB" << getFunctionNumber() << "_" + << MBBOp->getNumber() << "\t; " << MBBOp->getBasicBlock()->getName(); return; } case MachineOperand::MO_ConstantPoolIndex: - O << ".CPI" << CurrentFnName << "_" << MO.getConstantPoolIndex(); + O << PrivateGlobalPrefix << "CPI" << getFunctionNumber() + << '_' << MO.getConstantPoolIndex(); return; - case MachineOperand::MO_ExternalSymbol: - if (IsCallOp) { + // Computing the address of an external symbol, not calling it. + if (!PPCGenerateStaticCode) { std::string Name(GlobalPrefix); Name += MO.getSymbolName(); - FnStubs.insert(Name); - O << "L" << Name << "$stub"; + GVStubs.insert(Name); + O << "L" << Name << "$non_lazy_ptr"; return; } O << GlobalPrefix << MO.getSymbolName(); 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); - // Dynamically-resolved functions need a stub for the function. Be - // wary however not to output $stub for external functions whose addresses - // are taken. Those should be emitted as $non_lazy_ptr below. - Function *F = dyn_cast(GV); - if (F && IsCallOp && F->isExternal()) { - FnStubs.insert(Name); - O << "L" << Name << "$stub"; - return; - } - // External or weakly linked global variables need non-lazily-resolved stubs - if ((GV->isExternal() || GV->hasWeakLinkage() || GV->hasLinkOnceLinkage())){ - if (GV->hasLinkOnceLinkage()) - LinkOnceStubs.insert(Name); - else + if (!PPCGenerateStaticCode) { + if (((GV->isExternal() || GV->hasWeakLinkage() || + GV->hasLinkOnceLinkage()))) { GVStubs.insert(Name); - O << "L" << Name << "$non_lazy_ptr"; - return; + O << "L" << Name << "$non_lazy_ptr"; + return; + } } - O << Mang->getValueName(GV); + O << Name; return; } @@ -348,8 +355,9 @@ void PowerPCAsmPrinter::printOp(const MachineOperand &MO, bool IsCallOp) { /// printMachineInstruction -- Print out a single PowerPC MI in Darwin syntax to /// the current output stream. /// -void PowerPCAsmPrinter::printMachineInstruction(const MachineInstr *MI) { +void PPCAsmPrinter::printMachineInstruction(const MachineInstr *MI) { ++EmittedInsts; + // Check for slwi/srwi mnemonics. if (MI->getOpcode() == PPC::RLWINM) { bool FoundMnemonic = false; @@ -364,9 +372,9 @@ void PowerPCAsmPrinter::printMachineInstruction(const MachineInstr *MI) { SH = 32-SH; } if (FoundMnemonic) { - printOperand(MI, 0, MVT::i64); + printOperand(MI, 0); O << ", "; - printOperand(MI, 1, MVT::i64); + printOperand(MI, 1); O << ", " << (unsigned int)SH << "\n"; return; } @@ -380,20 +388,45 @@ void PowerPCAsmPrinter::printMachineInstruction(const MachineInstr *MI) { return; } + /// runOnMachineFunction - This uses the printMachineInstruction() /// method to print assembly for each instruction. /// bool DarwinAsmPrinter::runOnMachineFunction(MachineFunction &MF) { - setupMachineFunction(MF); + SetupMachineFunction(MF); O << "\n\n"; + + // Print out dwarf file info + MachineDebugInfo &DebugInfo = MF.getDebugInfo(); + std::vector Sources = DebugInfo.getSourceFiles(); + for (unsigned i = 0, N = Sources.size(); i < N; i++) { + O << "\t; .file\t" << (i + 1) << "," << "\"" << Sources[i] << "\"" << "\n"; + } // Print out constants referenced by the function - printConstantPool(MF.getConstantPool()); + EmitConstantPool(MF.getConstantPool()); // Print out labels for the function. - O << "\t.text\n"; - emitAlignment(2); - O << "\t.globl\t" << CurrentFnName << "\n"; + const Function *F = MF.getFunction(); + switch (F->getLinkage()) { + default: assert(0 && "Unknown linkage type!"); + case Function::InternalLinkage: // Symbols default to internal. + SwitchSection(".text", F); + EmitAlignment(4, F); + break; + case Function::ExternalLinkage: + SwitchSection(".text", F); + EmitAlignment(4, F); + O << "\t.globl\t" << CurrentFnName << "\n"; + break; + case Function::WeakLinkage: + case Function::LinkOnceLinkage: + SwitchSection(".section __TEXT,__textcoal_nt,coalesced,pure_instructions", + F); + O << "\t.globl\t" << CurrentFnName << "\n"; + O << "\t.weak_definition\t" << CurrentFnName << "\n"; + break; + } O << CurrentFnName << ":\n"; // Print out code for the function. @@ -401,7 +434,8 @@ bool DarwinAsmPrinter::runOnMachineFunction(MachineFunction &MF) { I != E; ++I) { // Print a label for the basic block. if (I != MF.begin()) { - O << ".LBB" << CurrentFnName << "_" << I->getNumber() << ":\t"; + O << PrivateGlobalPrefix << "BB" << getFunctionNumber() << '_' + << I->getNumber() << ":\t"; if (!I->getBasicBlock()->getName().empty()) O << CommentString << " " << I->getBasicBlock()->getName(); O << "\n"; @@ -413,167 +447,141 @@ bool DarwinAsmPrinter::runOnMachineFunction(MachineFunction &MF) { printMachineInstruction(II); } } - ++LabelNumber; // We didn't modify anything. return false; } -/// 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 DarwinAsmPrinter::printConstantPool(MachineConstantPool *MCP) { - const std::vector &CP = MCP->getConstants(); - const TargetData &TD = TM.getTargetData(); - - if (CP.empty()) return; - - for (unsigned i = 0, e = CP.size(); i != e; ++i) { - O << "\t.const\n"; - // FIXME: force doubles to be naturally aligned. We should handle this - // more correctly in the future. - if (Type::DoubleTy == CP[i]->getType()) - emitAlignment(3); - else - emitAlignment(TD.getTypeAlignmentShift(CP[i]->getType())); - O << ".CPI" << CurrentFnName << "_" << i << ":\t\t\t\t\t" << CommentString - << *CP[i] << "\n"; - emitGlobalConstant(CP[i]); - } -} bool DarwinAsmPrinter::doInitialization(Module &M) { if (TM.getSubtarget().isGigaProcessor()) O << "\t.machine ppc970\n"; AsmPrinter::doInitialization(M); + + // Darwin wants symbols to be quoted if they have complex names. + Mang->setUseQuotes(true); return false; } bool DarwinAsmPrinter::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'; - std::string name = Mang->getValueName(I); - Constant *C = I->getInitializer(); - unsigned Size = TD.getTypeSize(C->getType()); - unsigned Align = TD.getTypeAlignmentShift(C->getType()); - - if (C->isNullValue() && /* FIXME: Verify correct */ - (I->hasInternalLinkage() || I->hasWeakLinkage() || - I->hasLinkOnceLinkage())) { - SwitchSection(O, CurSection, ".data"); - if (Size == 0) Size = 1; // .comm Foo, 0 is undefined, avoid it. - if (I->hasInternalLinkage()) - O << ".lcomm " << name << "," << Size << "," << Align; - else - O << ".comm " << name << "," << Size; - O << "\t\t; "; - WriteAsOperand(O, I, true, true, &M); - O << '\n'; - } else { - switch (I->getLinkage()) { - case GlobalValue::LinkOnceLinkage: - O << ".section __TEXT,__textcoal_nt,coalesced,no_toc\n" - << ".weak_definition " << name << '\n' - << ".private_extern " << name << '\n' - << ".section __DATA,__datacoal_nt,coalesced,no_toc\n"; - LinkOnceStubs.insert(name); - break; - case GlobalValue::WeakLinkage: - O << ".weak_definition " << name << '\n' - << ".private_extern " << name << '\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: - SwitchSection(O, CurSection, ".data"); - break; - case GlobalValue::GhostLinkage: - std::cerr << "Error: unmaterialized (GhostLinkage) function in asm!"; - abort(); - } - - emitAlignment(Align); - O << name << ":\t\t\t\t; "; - WriteAsOperand(O, I, true, true, &M); - O << " = "; - WriteAsOperand(O, C, false, false, &M); - O << "\n"; - emitGlobalConstant(C); + 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 (I->hasAppendingLinkage() && EmitSpecialLLVMGlobal(I)) + continue; + + O << '\n'; + std::string name = Mang->getValueName(I); + Constant *C = I->getInitializer(); + unsigned Size = TD.getTypeSize(C->getType()); + unsigned Align = TD.getTypeAlignmentShift(C->getType()); + + if (C->isNullValue() && /* FIXME: Verify correct */ + (I->hasInternalLinkage() || I->hasWeakLinkage() || + I->hasLinkOnceLinkage())) { + SwitchSection(".data", I); + if (Size == 0) Size = 1; // .comm Foo, 0 is undefined, avoid it. + if (I->hasInternalLinkage()) + O << LCOMMDirective << name << "," << Size << "," << Align; + else + O << ".comm " << name << "," << Size; + O << "\t\t; '" << I->getName() << "'\n"; + } else { + switch (I->getLinkage()) { + case GlobalValue::LinkOnceLinkage: + case GlobalValue::WeakLinkage: + O << ".globl " << name << '\n' + << ".weak_definition " << name << '\n' + << ".private_extern " << name << '\n'; + SwitchSection(".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: + SwitchSection(".data", I); + break; + default: + std::cerr << "Unknown linkage type!"; + abort(); } + + EmitAlignment(Align, I); + O << name << ":\t\t\t\t; '" << I->getName() << "'\n"; + EmitGlobalConstant(C); } + } // Output stubs for dynamically-linked functions - for (std::set::iterator i = FnStubs.begin(), e = FnStubs.end(); - i != e; ++i) - { - if (PICEnabled) { - O << ".data\n"; - O << ".section __TEXT,__picsymbolstub1,symbol_stubs,pure_instructions,32\n"; - emitAlignment(2); - 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$" << *i << ")\n"; - O << "\tmtlr r0\n"; - O << "\tlwzu r12,lo16(L" << *i << "$lazy_ptr-L0$" << *i << ")(r11)\n"; - O << "\tmtctr r12\n"; - O << "\tbctr\n"; - O << ".data\n"; - O << ".lazy_symbol_pointer\n"; - O << "L" << *i << "$lazy_ptr:\n"; - O << "\t.indirect_symbol " << *i << "\n"; - O << "\t.long dyld_stub_binding_helper\n"; - } else { - O << "\t.section __TEXT,__symbol_stub1,symbol_stubs,pure_instructions,16\n"; - emitAlignment(4); - O << "L" << *i << "$stub:\n"; - O << "\t.indirect_symbol " << *i << "\n"; - O << "\tlis r11,ha16(L" << *i << "$lazy_ptr)\n"; - O << "\tlwzu r12,lo16(L" << *i << "$lazy_ptr)(r11)\n"; - O << "\tmtctr r12\n"; - O << "\tbctr\n"; - O << "\t.lazy_symbol_pointer\n"; - O << "L" << *i << "$lazy_ptr:\n"; - O << "\t.indirect_symbol " << *i << "\n"; - O << "\t.long dyld_stub_binding_helper\n"; + if (PICEnabled) { + for (std::set::iterator i = FnStubs.begin(), e = FnStubs.end(); + i != e; ++i) { + SwitchSection(".section __TEXT,__picsymbolstub1,symbol_stubs," + "pure_instructions,32", 0); + EmitAlignment(2); + 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$" << *i << ")\n"; + O << "\tmtlr r0\n"; + O << "\tlwzu r12,lo16(L" << *i << "$lazy_ptr-L0$" << *i << ")(r11)\n"; + O << "\tmtctr r12\n"; + O << "\tbctr\n"; + SwitchSection(".lazy_symbol_pointer", 0); + O << "L" << *i << "$lazy_ptr:\n"; + O << "\t.indirect_symbol " << *i << "\n"; + O << "\t.long dyld_stub_binding_helper\n"; + } + } else { + for (std::set::iterator i = FnStubs.begin(), e = FnStubs.end(); + i != e; ++i) { + SwitchSection(".section __TEXT,__symbol_stub1,symbol_stubs," + "pure_instructions,16", 0); + EmitAlignment(4); + O << "L" << *i << "$stub:\n"; + O << "\t.indirect_symbol " << *i << "\n"; + O << "\tlis r11,ha16(L" << *i << "$lazy_ptr)\n"; + O << "\tlwzu r12,lo16(L" << *i << "$lazy_ptr)(r11)\n"; + O << "\tmtctr r12\n"; + O << "\tbctr\n"; + SwitchSection(".lazy_symbol_pointer", 0); + O << "L" << *i << "$lazy_ptr:\n"; + O << "\t.indirect_symbol " << *i << "\n"; + O << "\t.long dyld_stub_binding_helper\n"; } } O << "\n"; - // Output stubs for external global variables - if (GVStubs.begin() != GVStubs.end()) - O << ".data\n.non_lazy_symbol_pointer\n"; - for (std::set::iterator i = GVStubs.begin(), e = GVStubs.end(); - i != e; ++i) { - O << "L" << *i << "$non_lazy_ptr:\n"; - O << "\t.indirect_symbol " << *i << "\n"; - O << "\t.long\t0\n"; + // Output stubs for external and common global variables. + if (GVStubs.begin() != GVStubs.end()) { + SwitchSection(".non_lazy_symbol_pointer", 0); + for (std::set::iterator I = GVStubs.begin(), + E = GVStubs.end(); I != E; ++I) { + O << "L" << *I << "$non_lazy_ptr:\n"; + O << "\t.indirect_symbol " << *I << "\n"; + O << "\t.long\t0\n"; + } } - // Output stubs for link-once variables - if (LinkOnceStubs.begin() != LinkOnceStubs.end()) - O << ".data\n.align 2\n"; - for (std::set::iterator i = LinkOnceStubs.begin(), - e = LinkOnceStubs.end(); i != e; ++i) { - O << "L" << *i << "$non_lazy_ptr:\n" - << "\t.long\t" << *i << '\n'; - } + // 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"; AsmPrinter::doFinalization(M); return false; // success @@ -583,10 +591,10 @@ bool DarwinAsmPrinter::doFinalization(Module &M) { /// method to print assembly for each instruction. /// bool AIXAsmPrinter::runOnMachineFunction(MachineFunction &MF) { - CurrentFnName = MF.getFunction()->getName(); + SetupMachineFunction(MF); // Print out constants referenced by the function - printConstantPool(MF.getConstantPool()); + EmitConstantPool(MF.getConstantPool()); // Print out header for the function. O << "\t.csect .text[PR]\n" @@ -603,8 +611,9 @@ bool AIXAsmPrinter::runOnMachineFunction(MachineFunction &MF) { for (MachineFunction::const_iterator I = MF.begin(), E = MF.end(); I != E; ++I) { // Print a label for the basic block. - O << "LBB" << CurrentFnName << "_" << I->getNumber() << ":\t# " - << I->getBasicBlock()->getName() << "\n"; + O << PrivateGlobalPrefix << "BB" << getFunctionNumber() << '_' + << I->getNumber() + << ":\t" << CommentString << I->getBasicBlock()->getName() << '\n'; for (MachineBasicBlock::const_iterator II = I->begin(), E = I->end(); II != E; ++II) { // Print the assembly for the instruction. @@ -612,7 +621,6 @@ bool AIXAsmPrinter::runOnMachineFunction(MachineFunction &MF) { printMachineInstruction(II); } } - ++LabelNumber; O << "LT.." << CurrentFnName << ":\n" << "\t.long 0\n" @@ -626,30 +634,9 @@ bool AIXAsmPrinter::runOnMachineFunction(MachineFunction &MF) { return false; } -/// 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 AIXAsmPrinter::printConstantPool(MachineConstantPool *MCP) { - const std::vector &CP = MCP->getConstants(); - const TargetData &TD = TM.getTargetData(); - - if (CP.empty()) return; - - for (unsigned i = 0, e = CP.size(); i != e; ++i) { - O << "\t.const\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]); - } -} - bool AIXAsmPrinter::doInitialization(Module &M) { + SwitchSection("", 0); const TargetData &TD = TM.getTargetData(); - std::string CurSection; O << "\t.machine \"ppc64\"\n" << "\t.toc\n" @@ -671,7 +658,7 @@ bool AIXAsmPrinter::doInitialization(Module &M) { O << "\t.csect _global.rw_c[RW],3\n"; } O << Name << ":\n"; - emitGlobalConstant(C); + EmitGlobalConstant(C); } // Output labels for globals @@ -683,16 +670,17 @@ bool AIXAsmPrinter::doInitialization(Module &M) { if (GV->isExternal() && GV->use_begin() == GV->use_end()) continue; + IncrementFunctionNumber(); std::string Name = GV->getName(); - std::string Label = "LC.." + utostr(LabelNumber++); + std::string Label = "LC.." + utostr(getFunctionNumber()); GVToLabelMap[GV] = Label; O << Label << ":\n" << "\t.tc " << Name << "[TC]," << Name; if (GV->isExternal()) O << "[RW]"; O << '\n'; - } + } - Mang = new Mangler(M, "."); + AsmPrinter::doInitialization(M); return false; // success } @@ -711,15 +699,14 @@ bool AIXAsmPrinter::doFinalization(Module &M) { O << "\t.comm " << Name << "," << TD.getTypeSize(I->getType()) << "," << Log2_32((unsigned)TD.getTypeAlignment(I->getType())); } - O << "\t\t# "; - WriteAsOperand(O, I, true, true, &M); + O << "\t\t" << CommentString << " "; + WriteAsOperand(O, I, false, true, &M); O << "\n"; } O << "_section_.text:\n" << "\t.csect .data[RW],3\n" << "\t.llong _section_.text\n"; - - delete Mang; + AsmPrinter::doFinalization(M); return false; // success }