#include "llvm/Module.h"
#include "llvm/Assembly/Writer.h"
#include "llvm/CodeGen/AsmPrinter.h"
-#include "llvm/CodeGen/MachineConstantPool.h"
+#include "llvm/CodeGen/DwarfWriter.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"
#include "llvm/Support/Debug.h"
+#include "llvm/Support/Compiler.h"
+#include "llvm/Target/TargetAsmInfo.h"
#include "llvm/Target/MRegisterInfo.h"
#include "llvm/Target/TargetInstrInfo.h"
+#include "llvm/Target/TargetOptions.h"
#include "llvm/ADT/Statistic.h"
#include "llvm/ADT/StringExtras.h"
+#include <iostream>
#include <set>
using namespace llvm;
namespace {
Statistic<> EmittedInsts("asm-printer", "Number of machine instrs printed");
- class PPCAsmPrinter : public AsmPrinter {
- std::string CurSection;
- public:
- std::set<std::string> FnStubs, GVStubs, LinkOnceStubs;
+ struct VISIBILITY_HIDDEN PPCAsmPrinter : public AsmPrinter {
+ std::set<std::string> FnStubs, GVStubs;
+ const PPCSubtarget &Subtarget;
- PPCAsmPrinter(std::ostream &O, TargetMachine &TM)
- : AsmPrinter(O, TM), FunctionNumber(0) {}
-
- /// Unique incrementer for label values for referencing Global values.
- ///
- unsigned FunctionNumber;
+ PPCAsmPrinter(std::ostream &O, TargetMachine &TM, const TargetAsmInfo *T)
+ : AsmPrinter(O, TM, T), Subtarget(TM.getSubtarget<PPCSubtarget>()) {
+ }
virtual const char *getPassName() const {
return "PowerPC Assembly Printer";
return static_cast<PPCTargetMachine&>(TM);
}
- /// SwitchSection - Switch to the specified section of the executable if we
- /// are not already in it!
- ///
- void SwitchSection(const char *NewSection, const GlobalValue *GV) {
- std::string NS;
-
- if (GV && GV->hasSection())
- NS = ".section " + GV->getSection();
- else
- NS = NewSection;
-
- if (CurSection != NS) {
- CurSection = NS;
- if (!CurSection.empty())
- O << "\t" << CurSection << "\n";
- }
- }
-
unsigned enumRegToMachineReg(unsigned enumReg) {
switch (enumReg) {
default: assert(0 && "Unhandled register!"); break;
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) {
+ if (MO.isRegister()) {
assert(MRegisterInfo::isPhysicalRegister(MO.getReg())&&"Not physreg??");
O << TM.getRegisterInfo()->get(MO.getReg()).Name;
} else if (MO.isImmediate()) {
printOp(MO);
}
}
-
- void printU5ImmOperand(const MachineInstr *MI, unsigned OpNo,
- MVT::ValueType VT) {
+
+ bool PrintAsmOperand(const MachineInstr *MI, unsigned OpNo,
+ unsigned AsmVariant, const char *ExtraCode);
+ bool PrintAsmMemoryOperand(const MachineInstr *MI, unsigned OpNo,
+ unsigned AsmVariant, const char *ExtraCode);
+
+
+ void printS5ImmOperand(const MachineInstr *MI, unsigned OpNo) {
+ char value = MI->getOperand(OpNo).getImmedValue();
+ value = (value << (32-5)) >> (32-5);
+ O << (int)value;
+ }
+ 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 printS16X4ImmOperand(const MachineInstr *MI, unsigned OpNo,
- MVT::ValueType VT) {
- O << (short)MI->getOperand(OpNo).getImmedValue()*4;
+ void printS16X4ImmOperand(const MachineInstr *MI, unsigned OpNo) {
+ O << (short)(MI->getOperand(OpNo).getImmedValue()*4);
}
- void printBranchOperand(const MachineInstr *MI, unsigned OpNo,
- MVT::ValueType VT) {
+ 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();
+ O << "$+" << MI->getOperand(OpNo).getImmedValue()*4;
} else {
printOp(MI->getOperand(OpNo));
}
}
- void printCallOperand(const MachineInstr *MI, unsigned OpNo,
- MVT::ValueType VT) {
- printOp(MI->getOperand(OpNo), true);
+ void printCallOperand(const MachineInstr *MI, unsigned OpNo) {
+ const MachineOperand &MO = MI->getOperand(OpNo);
+ if (TM.getRelocationModel() != Reloc::Static) {
+ if (MO.getType() == MachineOperand::MO_GlobalAddress) {
+ GlobalValue *GV = MO.getGlobal();
+ if (((GV->isExternal() || GV->hasWeakLinkage() ||
+ GV->hasLinkOnceLinkage()))) {
+ // Dynamically-resolved functions need a stub for the function.
+ std::string Name = Mang->getValueName(GV);
+ FnStubs.insert(Name);
+ O << "L" << Name << "$stub";
+ return;
+ }
+ }
+ if (MO.getType() == MachineOperand::MO_ExternalSymbol) {
+ std::string Name(TAI->getGlobalPrefix()); Name += MO.getSymbolName();
+ FnStubs.insert(Name);
+ O << "L" << Name << "$stub";
+ return;
+ }
+ }
+
+ printOp(MI->getOperand(OpNo));
}
- void printAbsAddrOperand(const MachineInstr *MI, unsigned OpNo,
- MVT::ValueType VT) {
+ void printAbsAddrOperand(const MachineInstr *MI, unsigned OpNo) {
O << (int)MI->getOperand(OpNo).getImmedValue()*4;
}
- void printPICLabel(const MachineInstr *MI, unsigned OpNo,
- MVT::ValueType VT) {
- // FIXME: should probably be converted to cout.width and cout.fill
- O << "\"L0000" << FunctionNumber << "$pb\"\n";
- O << "\"L0000" << FunctionNumber << "$pb\":";
+ void printPICLabel(const MachineInstr *MI, unsigned OpNo) {
+ O << "\"L" << getFunctionNumber() << "$pb\"\n";
+ O << "\"L" << getFunctionNumber() << "$pb\":";
}
- void printSymbolHi(const MachineInstr *MI, unsigned OpNo,
- MVT::ValueType VT) {
+ void printSymbolHi(const MachineInstr *MI, unsigned OpNo) {
if (MI->getOperand(OpNo).isImmediate()) {
- printS16ImmOperand(MI, OpNo, VT);
+ printS16ImmOperand(MI, OpNo);
} else {
O << "ha16(";
printOp(MI->getOperand(OpNo));
- if (PICEnabled)
- O << "-\"L0000" << FunctionNumber << "$pb\")";
+ if (TM.getRelocationModel() == Reloc::PIC_)
+ O << "-\"L" << getFunctionNumber() << "$pb\")";
else
O << ')';
}
}
- void printSymbolLo(const MachineInstr *MI, unsigned OpNo,
- MVT::ValueType VT) {
+ void printSymbolLo(const MachineInstr *MI, unsigned OpNo) {
if (MI->getOperand(OpNo).isImmediate()) {
- printS16ImmOperand(MI, OpNo, VT);
+ printS16ImmOperand(MI, OpNo);
} else {
O << "lo16(";
printOp(MI->getOperand(OpNo));
- if (PICEnabled)
- O << "-\"L0000" << FunctionNumber << "$pb\")";
+ if (TM.getRelocationModel() == Reloc::PIC_)
+ O << "-\"L" << getFunctionNumber() << "$pb\")";
else
O << ')';
}
}
- 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.
+ 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);
+ 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;
};
/// DarwinAsmPrinter - PowerPC assembly printer, customized for Darwin/Mac OS
/// X
- ///
- struct DarwinAsmPrinter : public PPCAsmPrinter {
+ struct VISIBILITY_HIDDEN DarwinAsmPrinter : public PPCAsmPrinter {
+
+ DwarfWriter DW;
- DarwinAsmPrinter(std::ostream &O, TargetMachine &TM)
- : PPCAsmPrinter(O, TM) {
- CommentString = ";";
- 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.
+ DarwinAsmPrinter(std::ostream &O, PPCTargetMachine &TM,
+ const TargetAsmInfo *T)
+ : PPCAsmPrinter(O, TM, T), DW(O, this, T) {
+ bool isPPC64 = Subtarget.isPPC64();
}
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);
- };
-
- /// AIXAsmPrinter - PowerPC assembly printer, customized for AIX
- ///
- struct AIXAsmPrinter : public PPCAsmPrinter {
- /// Map for labels corresponding to global variables
- ///
- std::map<const GlobalVariable*,std::string> GVToLabelMap;
-
- AIXAsmPrinter(std::ostream &O, TargetMachine &TM)
- : PPCAsmPrinter(O, TM) {
- CommentString = "#";
- 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.
- }
-
- virtual const char *getPassName() const {
- return "AIX PPC Assembly Printer";
+
+ void getAnalysisUsage(AnalysisUsage &AU) const {
+ AU.setPreservesAll();
+ AU.addRequired<MachineDebugInfo>();
+ PPCAsmPrinter::getAnalysisUsage(AU);
}
- void printConstantPool(MachineConstantPool *MCP);
- bool runOnMachineFunction(MachineFunction &F);
- bool doInitialization(Module &M);
- bool doFinalization(Module &M);
+ /// getSectionForFunction - Return the section that we should emit the
+ /// specified function body into.
+ virtual std::string getSectionForFunction(const Function &F) const;
};
} // end of anonymous namespace
-/// 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.
-///
-FunctionPass *llvm::createDarwinAsmPrinter(std::ostream &o, TargetMachine &tm) {
- return new DarwinAsmPrinter(o, tm);
-}
-
-/// createAIXAsmPrinterPass - Returns a pass that prints the PPC assembly code
-/// for a MachineFunction to the given output stream, in a format that the
-/// AIX 5L assembler can deal with.
-///
-FunctionPass *llvm::createAIXAsmPrinter(std::ostream &o, TargetMachine &tm) {
- return new AIXAsmPrinter(o, tm);
-}
-
// Include the auto-generated portion of the assembly writer
#include "PPCGenAsmWriter.inc"
-void PPCAsmPrinter::printOp(const MachineOperand &MO, bool IsCallOp) {
- const MRegisterInfo &RI = *TM.getRegisterInfo();
- int new_symbol;
-
+void PPCAsmPrinter::printOp(const MachineOperand &MO) {
switch (MO.getType()) {
- case MachineOperand::MO_VirtualRegister:
- if (Value *V = MO.getVRegValueOrNull()) {
- O << "<" << V->getName() << ">";
- return;
- }
- // FALLTHROUGH
- case MachineOperand::MO_MachineRegister:
- case MachineOperand::MO_CCRegister:
- O << RI.get(MO.getReg()).Name;
- return;
-
- case MachineOperand::MO_SignExtendedImmed:
- case MachineOperand::MO_UnextendedImmed:
+ case MachineOperand::MO_Immediate:
std::cerr << "printOp() does not handle immediate values\n";
abort();
return;
- case MachineOperand::MO_PCRelativeDisp:
- std::cerr << "Shouldn't use addPCDisp() when building PPC MachineInstrs";
- abort();
+ case MachineOperand::MO_MachineBasicBlock:
+ printBasicBlockLabel(MO.getMachineBasicBlock());
return;
-
- case MachineOperand::MO_MachineBasicBlock: {
- MachineBasicBlock *MBBOp = MO.getMachineBasicBlock();
- O << "LBB" << FunctionNumber << "_" << MBBOp->getNumber() << "\t; "
- << MBBOp->getBasicBlock()->getName();
+ case MachineOperand::MO_JumpTableIndex:
+ O << TAI->getPrivateGlobalPrefix() << "JTI" << getFunctionNumber()
+ << '_' << MO.getJumpTableIndex();
+ // FIXME: PIC relocation model
return;
- }
-
case MachineOperand::MO_ConstantPoolIndex:
- O << "LCPI" << FunctionNumber << '_' << MO.getConstantPoolIndex();
+ O << TAI->getPrivateGlobalPrefix() << "CPI" << getFunctionNumber()
+ << '_' << MO.getConstantPoolIndex();
return;
-
case MachineOperand::MO_ExternalSymbol:
- if (IsCallOp) {
- std::string Name(GlobalPrefix); Name += MO.getSymbolName();
- FnStubs.insert(Name);
- O << "L" << Name << "$stub";
+ // 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 << GlobalPrefix << MO.getSymbolName();
+ O << TAI->getGlobalPrefix() << 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 $non_lazy_ptr below.
- Function *F = dyn_cast<Function>(GV);
- if (F && IsCallOp && F->isExternal()) {
- FnStubs.insert(Name);
- O << "L" << Name << "$stub";
- return;
- }
+ int offset = MO.getOffset();
// 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 (TM.getRelocationModel() != Reloc::Static) {
+ 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;
}
}
}
+/// PrintAsmOperand - Print out an operand for an inline asm expression.
+///
+bool PPCAsmPrinter::PrintAsmOperand(const MachineInstr *MI, unsigned OpNo,
+ unsigned AsmVariant,
+ const char *ExtraCode) {
+ // Does this asm operand have a single letter operand modifier?
+ if (ExtraCode && ExtraCode[0]) {
+ if (ExtraCode[1] != 0) return true; // Unknown modifier.
+
+ switch (ExtraCode[0]) {
+ default: return true; // Unknown modifier.
+ case 'L': // Write second word of DImode reference.
+ // Verify that this operand has two consecutive registers.
+ if (!MI->getOperand(OpNo).isRegister() ||
+ OpNo+1 == MI->getNumOperands() ||
+ !MI->getOperand(OpNo+1).isRegister())
+ return true;
+ ++OpNo; // Return the high-part.
+ break;
+ }
+ }
+
+ printOperand(MI, OpNo);
+ return false;
+}
+
+bool PPCAsmPrinter::PrintAsmMemoryOperand(const MachineInstr *MI, unsigned OpNo,
+ unsigned AsmVariant,
+ const char *ExtraCode) {
+ if (ExtraCode && ExtraCode[0])
+ return true; // Unknown modifier.
+ printMemRegReg(MI, OpNo);
+ return false;
+}
+
/// printMachineInstruction -- Print out a single PowerPC MI in Darwin syntax to
/// the current output stream.
///
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;
}
+ } else if (MI->getOpcode() == PPC::OR || MI->getOpcode() == PPC::OR8) {
+ if (MI->getOperand(1).getReg() == MI->getOperand(2).getReg()) {
+ O << "mr ";
+ printOperand(MI, 0);
+ O << ", ";
+ printOperand(MI, 1);
+ O << "\n";
+ return;
+ }
}
if (printInstruction(MI))
return;
}
+
+
+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 ".section __TEXT,__textcoal_nt,coalesced,pure_instructions";
+ }
+}
+
/// runOnMachineFunction - This uses the printMachineInstruction()
/// method to print assembly for each instruction.
///
bool DarwinAsmPrinter::runOnMachineFunction(MachineFunction &MF) {
- setupMachineFunction(MF);
- O << "\n\n";
+ DW.SetDebugInfo(&getAnalysis<MachineDebugInfo>());
+ SetupMachineFunction(MF);
+ O << "\n\n";
+
// Print out constants referenced by the function
- printConstantPool(MF.getConstantPool());
+ EmitConstantPool(MF.getConstantPool());
// Print out labels for the function.
const Function *F = MF.getFunction();
- SwitchSection(".text", F);
- emitAlignment(4, F);
- if (!F->hasInternalLinkage())
+ 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;
+ }
+ EmitAlignment(4, 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()) {
- O << "LBB" << FunctionNumber << '_' << I->getNumber() << ":\t";
- if (!I->getBasicBlock()->getName().empty())
- O << CommentString << " " << I->getBasicBlock()->getName();
- O << "\n";
+ printBasicBlockLabel(I, true);
+ O << '\n';
}
for (MachineBasicBlock::const_iterator II = I->begin(), E = I->end();
II != E; ++II) {
printMachineInstruction(II);
}
}
- ++FunctionNumber;
+ // 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;
}
-/// 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<Constant*> &CP = MCP->getConstants();
- const TargetData &TD = TM.getTargetData();
-
- if (CP.empty()) return;
-
- for (unsigned i = 0, e = CP.size(); i != e; ++i) {
- SwitchSection(".const", 0);
- // 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 << "LCPI" << FunctionNumber << '_' << i << ":\t\t\t\t\t" << CommentString
- << *CP[i] << '\n';
- emitGlobalConstant(CP[i]);
- }
-}
bool DarwinAsmPrinter::doInitialization(Module &M) {
- if (TM.getSubtarget<PPCSubtarget>().isGigaProcessor())
+ if (Subtarget.isGigaProcessor())
O << "\t.machine ppc970\n";
- SwitchSection("", 0);
AsmPrinter::doInitialization(M);
// Darwin wants symbols to be quoted if they have complex names.
Mang->setUseQuotes(true);
+
+ // Emit initial debug information.
+ DW.BeginModule(&M);
return false;
}
bool DarwinAsmPrinter::doFinalization(Module &M) {
- const TargetData &TD = TM.getTargetData();
+ 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()) { // 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(".data", I);
- 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; '" << I->getName() << "'\n";
+ 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);
+ Constant *C = I->getInitializer();
+ unsigned Size = TD->getTypeSize(C->getType());
+ unsigned Align = TD->getPreferredAlignmentLog(I);
+
+ if (C->isNullValue() && /* FIXME: Verify correct */
+ (I->hasInternalLinkage() || I->hasWeakLinkage() ||
+ I->hasLinkOnceLinkage() ||
+ (I->hasExternalLinkage() && !I->hasSection()))) {
+ 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 {
- switch (I->getLinkage()) {
- case GlobalValue::LinkOnceLinkage:
- SwitchSection("", 0);
- 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(".data", I);
- break;
- default:
- std::cerr << "Unknown linkage type!";
- abort();
+ SwitchToDataSection("\t.data", I);
+ O << ".comm " << name << "," << Size;
+ }
+ O << "\t\t; '" << I->getName() << "'\n";
+ } else {
+ switch (I->getLinkage()) {
+ case GlobalValue::LinkOnceLinkage:
+ case GlobalValue::WeakLinkage:
+ O << "\t.globl " << name << '\n'
+ << "\t.weak_definition " << name << '\n';
+ SwitchToDataSection(".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;
+ }
}
- emitAlignment(Align, I);
- O << name << ":\t\t\t\t; '" << I->getName() << "'\n";
- emitGlobalConstant(C);
+ SwitchToDataSection("\t.data", I);
+ break;
+ default:
+ std::cerr << "Unknown linkage type!";
+ abort();
}
+
+ EmitAlignment(Align, I);
+ O << name << ":\t\t\t\t; '" << I->getName() << "'\n";
+ EmitGlobalConstant(C);
+ O << '\n';
}
+ }
+
+ bool isPPC64 = TD->getPointerSizeInBits() == 64;
// Output stubs for dynamically-linked functions
- for (std::set<std::string>::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 (TM.getRelocationModel() == Reloc::PIC_) {
+ for (std::set<std::string>::iterator i = FnStubs.begin(), e = FnStubs.end();
+ i != e; ++i) {
+ SwitchToTextSection(".section __TEXT,__picsymbolstub1,symbol_stubs,"
+ "pure_instructions,32");
+ 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";
+ }
+ } else {
+ for (std::set<std::string>::iterator i = FnStubs.begin(), e = FnStubs.end();
+ i != e; ++i) {
+ SwitchToTextSection(".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 << "$lazy_ptr:\n";
+ O << "\t.indirect_symbol " << *i << "\n";
+ if (isPPC64)
+ O << "\t.quad dyld_stub_binding_helper\n";
+ else
+ O << "\t.long dyld_stub_binding_helper\n";
}
}
O << "\n";
- // Output stubs for external global variables
- if (GVStubs.begin() != GVStubs.end())
- O << ".data\n.non_lazy_symbol_pointer\n";
- for (std::set<std::string>::iterator i = GVStubs.begin(), e = GVStubs.end();
- i != e; ++i) {
- O << "L" << *i << "$non_lazy_ptr:\n";
- O << "\t.indirect_symbol " << *i << "\n";
- O << "\t.long\t0\n";
+ // Output stubs for external and common global variables.
+ if (GVStubs.begin() != GVStubs.end()) {
+ SwitchToDataSection(".non_lazy_symbol_pointer");
+ for (std::set<std::string>::iterator I = GVStubs.begin(),
+ E = GVStubs.end(); I != E; ++I) {
+ O << "L" << *I << "$non_lazy_ptr:\n";
+ O << "\t.indirect_symbol " << *I << "\n";
+ if (isPPC64)
+ O << "\t.quad\t0\n";
+ else
+ O << "\t.long\t0\n";
+
+ }
}
- // Output stubs for link-once variables
- if (LinkOnceStubs.begin() != LinkOnceStubs.end())
- O << ".data\n.align 2\n";
- for (std::set<std::string>::iterator i = LinkOnceStubs.begin(),
- e = LinkOnceStubs.end(); i != e; ++i) {
- O << "L" << *i << "$non_lazy_ptr:\n"
- << "\t.long\t" << *i << '\n';
- }
+ // Emit initial debug information.
+ DW.EndModule();
// 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
return false; // success
}
-/// runOnMachineFunction - This uses the printMachineInstruction()
-/// method to print assembly for each instruction.
-///
-bool AIXAsmPrinter::runOnMachineFunction(MachineFunction &MF) {
- CurrentFnName = MF.getFunction()->getName();
-
- // Print out constants referenced by the function
- printConstantPool(MF.getConstantPool());
-
- // Print out header for the function.
- O << "\t.csect .text[PR]\n"
- << "\t.align 2\n"
- << "\t.globl " << CurrentFnName << '\n'
- << "\t.globl ." << CurrentFnName << '\n'
- << "\t.csect " << CurrentFnName << "[DS],3\n"
- << CurrentFnName << ":\n"
- << "\t.llong ." << CurrentFnName << ", TOC[tc0], 0\n"
- << "\t.csect .text[PR]\n"
- << '.' << CurrentFnName << ":\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.
- O << "LBB" << CurrentFnName << '_' << 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.
- O << "\t";
- printMachineInstruction(II);
- }
- }
- ++FunctionNumber;
-
- O << "LT.." << CurrentFnName << ":\n"
- << "\t.long 0\n"
- << "\t.byte 0,0,32,65,128,0,0,0\n"
- << "\t.long LT.." << CurrentFnName << "-." << CurrentFnName << '\n'
- << "\t.short 3\n"
- << "\t.byte \"" << CurrentFnName << "\"\n"
- << "\t.align 2\n";
- // 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.
+/// createDarwinCodePrinterPass - 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.
///
-void AIXAsmPrinter::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) {
- SwitchSection(".const", 0);
- O << "\t.align " << (unsigned)TD.getTypeAlignment(CP[i]->getType())
- << "\n";
- O << "LCPI" << FunctionNumber << '_' << i << ":\t\t\t\t\t;"
- << *CP[i] << '\n';
- emitGlobalConstant(CP[i]);
- }
+FunctionPass *llvm::createPPCAsmPrinterPass(std::ostream &o,
+ PPCTargetMachine &tm) {
+ return new DarwinAsmPrinter(o, tm, tm.getTargetAsmInfo());
}
-bool AIXAsmPrinter::doInitialization(Module &M) {
- SwitchSection("", 0);
- const TargetData &TD = TM.getTargetData();
-
- O << "\t.machine \"ppc64\"\n"
- << "\t.toc\n"
- << "\t.csect .text[PR]\n";
-
- // Print out module-level global variables
- for (Module::const_global_iterator I = M.global_begin(), E = M.global_end();
- I != E; ++I) {
- if (!I->hasInitializer())
- continue;
-
- std::string Name = I->getName();
- Constant *C = I->getInitializer();
- // N.B.: We are defaulting to writable strings
- if (I->hasExternalLinkage()) {
- O << "\t.globl " << Name << '\n'
- << "\t.csect .data[RW],3\n";
- } else {
- O << "\t.csect _global.rw_c[RW],3\n";
- }
- O << Name << ":\n";
- emitGlobalConstant(C);
- }
-
- // Output labels for globals
- if (M.global_begin() != M.global_end()) O << "\t.toc\n";
- for (Module::const_global_iterator I = M.global_begin(), E = M.global_end();
- I != E; ++I) {
- const GlobalVariable *GV = I;
- // Do not output labels for unused variables
- if (GV->isExternal() && GV->use_begin() == GV->use_end())
- continue;
-
- std::string Name = GV->getName();
- std::string Label = "LC.." + utostr(FunctionNumber++);
- GVToLabelMap[GV] = Label;
- O << Label << ":\n"
- << "\t.tc " << Name << "[TC]," << Name;
- if (GV->isExternal()) O << "[RW]";
- O << '\n';
- }
-
- AsmPrinter::doInitialization(M);
- return false; // success
-}
-
-bool AIXAsmPrinter::doFinalization(Module &M) {
- const TargetData &TD = TM.getTargetData();
- // Print out module-level global variables
- for (Module::const_global_iterator I = M.global_begin(), E = M.global_end();
- I != E; ++I) {
- if (I->hasInitializer() || I->hasExternalLinkage())
- continue;
-
- std::string Name = I->getName();
- if (I->hasInternalLinkage()) {
- O << "\t.lcomm " << Name << ",16,_global.bss_c";
- } else {
- O << "\t.comm " << Name << "," << TD.getTypeSize(I->getType())
- << "," << Log2_32((unsigned)TD.getTypeAlignment(I->getType()));
- }
- O << "\t\t# ";
- WriteAsOperand(O, I, false, true, &M);
- O << "\n";
- }
-
- O << "_section_.text:\n"
- << "\t.csect .data[RW],3\n"
- << "\t.llong _section_.text\n";
- AsmPrinter::doFinalization(M);
- return false; // success
-}
projects / oota-llvm.git / blobdiff