#define DEBUG_TYPE "asmprinter"
#include "PPC.h"
+#include "PPCPredicates.h"
#include "PPCTargetMachine.h"
#include "PPCSubtarget.h"
#include "llvm/Constants.h"
#include "llvm/Module.h"
#include "llvm/Assembly/Writer.h"
#include "llvm/CodeGen/AsmPrinter.h"
+#include "llvm/CodeGen/DwarfWriter.h"
#include "llvm/CodeGen/MachineDebugInfo.h"
#include "llvm/CodeGen/MachineFunctionPass.h"
#include "llvm/CodeGen/MachineInstr.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 <set>
using namespace llvm;
namespace {
- Statistic<> EmittedInsts("asm-printer", "Number of machine instrs printed");
+ Statistic EmittedInsts("asm-printer", "Number of machine instrs printed");
- class PPCAsmPrinter : public AsmPrinter {
- public:
+ struct VISIBILITY_HIDDEN PPCAsmPrinter : public AsmPrinter {
std::set<std::string> FnStubs, GVStubs;
+ const PPCSubtarget &Subtarget;
- PPCAsmPrinter(std::ostream &O, TargetMachine &TM)
- : AsmPrinter(O, TM) {}
+ // Necessary for external weak linkage support
+ std::set<std::string> ExtWeakSymbols;
+
+ 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";
void printMachineInstruction(const MachineInstr *MI);
void printOp(const MachineOperand &MO);
- void printOperand(const MachineInstr *MI, unsigned OpNo){
+ 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);
}
}
-
+
+ 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 short)MI->getOperand(OpNo).getImmedValue();
}
void printS16X4ImmOperand(const MachineInstr *MI, unsigned OpNo) {
- O << (short)MI->getOperand(OpNo).getImmedValue()*4;
+ if (MI->getOperand(OpNo).isImmediate()) {
+ O << (short)(MI->getOperand(OpNo).getImmedValue()*4);
+ } else {
+ O << "lo16(";
+ printOp(MI->getOperand(OpNo));
+ if (TM.getRelocationModel() == Reloc::PIC_)
+ O << "-\"L" << getFunctionNumber() << "$pb\")";
+ else
+ O << ')';
+ }
}
void printBranchOperand(const MachineInstr *MI, unsigned OpNo) {
// Branches can take an immediate operand. This is used by the branch
// selection pass to print $+8, an eight byte displacement from the PC.
if (MI->getOperand(OpNo).isImmediate()) {
- O << "$+" << MI->getOperand(OpNo).getImmedValue();
+ O << "$+" << MI->getOperand(OpNo).getImmedValue()*4;
} else {
printOp(MI->getOperand(OpNo));
}
}
void printCallOperand(const MachineInstr *MI, unsigned OpNo) {
const MachineOperand &MO = MI->getOperand(OpNo);
- if (!PPCGenerateStaticCode) {
+ if (TM.getRelocationModel() != Reloc::Static) {
if (MO.getType() == MachineOperand::MO_GlobalAddress) {
GlobalValue *GV = MO.getGlobal();
if (((GV->isExternal() || GV->hasWeakLinkage() ||
std::string Name = Mang->getValueName(GV);
FnStubs.insert(Name);
O << "L" << Name << "$stub";
+ if (GV->hasExternalWeakLinkage())
+ ExtWeakSymbols.insert(Name);
return;
}
}
if (MO.getType() == MachineOperand::MO_ExternalSymbol) {
- std::string Name(GlobalPrefix); Name += MO.getSymbolName();
+ std::string Name(TAI->getGlobalPrefix()); Name += MO.getSymbolName();
FnStubs.insert(Name);
O << "L" << Name << "$stub";
return;
} else {
O << "ha16(";
printOp(MI->getOperand(OpNo));
- if (PICEnabled)
+ if (TM.getRelocationModel() == Reloc::PIC_)
O << "-\"L" << getFunctionNumber() << "$pb\")";
else
O << ')';
} else {
O << "lo16(";
printOp(MI->getOperand(OpNo));
- if (PICEnabled)
+ if (TM.getRelocationModel() == Reloc::PIC_)
O << "-\"L" << getFunctionNumber() << "$pb\")";
else
O << ')';
unsigned RegNo = enumRegToMachineReg(CCReg);
O << (0x80 >> RegNo);
}
- // The new addressing mode printers, currently empty
+ // The new addressing mode printers.
void printMemRegImm(const MachineInstr *MI, unsigned OpNo) {
printSymbolLo(MI, OpNo);
O << '(';
- printOperand(MI, OpNo+1);
+ 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
printOperand(MI, OpNo+1);
}
+ void printPredicateOperand(const MachineInstr *MI, unsigned OpNo,
+ const char *Modifier);
+
virtual bool runOnMachineFunction(MachineFunction &F) = 0;
virtual bool doFinalization(Module &M) = 0;
};
/// DarwinAsmPrinter - PowerPC assembly printer, customized for Darwin/Mac OS
/// X
- ///
- struct DarwinAsmPrinter : public PPCAsmPrinter {
-
- DarwinAsmPrinter(std::ostream &O, TargetMachine &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";
+ struct VISIBILITY_HIDDEN DarwinAsmPrinter : public PPCAsmPrinter {
+
+ DwarfWriter DW;
+
+ DarwinAsmPrinter(std::ostream &O, PPCTargetMachine &TM,
+ const TargetAsmInfo *T)
+ : PPCAsmPrinter(O, TM, T), DW(O, this, T) {
}
virtual const char *getPassName() const {
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.
- ConstantPoolSection = "\t.const\t";
- }
-
- virtual const char *getPassName() const {
- return "AIX PPC Assembly Printer";
+
+ void getAnalysisUsage(AnalysisUsage &AU) const {
+ AU.setPreservesAll();
+ AU.addRequired<MachineDebugInfo>();
+ PPCAsmPrinter::getAnalysisUsage(AU);
}
- 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) {
- const MRegisterInfo &RI = *TM.getRegisterInfo();
- int new_symbol;
-
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:
- std::cerr << "printOp() does not handle immediate values\n";
+ case MachineOperand::MO_Immediate:
+ 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 << PrivateGlobalPrefix << "BB" << getFunctionNumber() << "_"
- << 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 << PrivateGlobalPrefix << "CPI" << getFunctionNumber()
+ O << TAI->getPrivateGlobalPrefix() << "CPI" << getFunctionNumber()
<< '_' << MO.getConstantPoolIndex();
return;
case MachineOperand::MO_ExternalSymbol:
// Computing the address of an external symbol, not calling it.
- if (!PPCGenerateStaticCode) {
- std::string Name(GlobalPrefix); Name += MO.getSymbolName();
+ 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.
std::string Name = Mang->getValueName(GV);
// External or weakly linked global variables need non-lazily-resolved stubs
- if (!PPCGenerateStaticCode) {
+ if (TM.getRelocationModel() != Reloc::Static) {
if (((GV->isExternal() || GV->hasWeakLinkage() ||
GV->hasLinkOnceLinkage()))) {
GVStubs.insert(Name);
return;
}
}
-
O << Name;
+
+ if (GV->hasExternalWeakLinkage())
+ ExtWeakSymbols.insert(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;
+}
+
+void PPCAsmPrinter::printPredicateOperand(const MachineInstr *MI, unsigned OpNo,
+ const char *Modifier) {
+ assert(Modifier && "Must specify 'cc' or 'reg' as predicate op modifier!");
+ unsigned Code = MI->getOperand(OpNo).getImm();
+ if (!strcmp(Modifier, "cc")) {
+ switch ((PPC::Predicate)Code) {
+ case PPC::PRED_ALWAYS: return; // Don't print anything for always.
+ case PPC::PRED_LT: O << "lt"; return;
+ case PPC::PRED_LE: O << "le"; return;
+ case PPC::PRED_EQ: O << "eq"; return;
+ case PPC::PRED_GE: O << "ge"; return;
+ case PPC::PRED_GT: O << "gt"; return;
+ case PPC::PRED_NE: O << "ne"; return;
+ case PPC::PRED_UN: O << "un"; return;
+ case PPC::PRED_NU: O << "nu"; return;
+ }
+
+ } else {
+ assert(!strcmp(Modifier, "reg") &&
+ "Need to specify 'cc' or 'reg' as predicate op modifier!");
+ // Don't print the register for 'always'.
+ if (Code == PPC::PRED_ALWAYS) return;
+ printOperand(MI, OpNo+1);
+ }
+}
+
+
/// printMachineInstruction -- Print out a single PowerPC MI in Darwin syntax to
/// the current output stream.
///
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;
+ }
+ } else if (MI->getOpcode() == PPC::RLDICR) {
+ unsigned char SH = MI->getOperand(2).getImmedValue();
+ unsigned char ME = MI->getOperand(3).getImmedValue();
+ // rldicr RA, RS, SH, 63-SH == sldi RA, RS, SH
+ if (63-SH == ME) {
+ O << "sldi ";
+ printOperand(MI, 0);
+ O << ", ";
+ printOperand(MI, 1);
+ O << ", " << (unsigned int)SH << "\n";
+ return;
+ }
}
if (printInstruction(MI))
}
+
+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) {
+ DW.SetDebugInfo(&getAnalysis<MachineDebugInfo>());
+
SetupMachineFunction(MF);
O << "\n\n";
- // Print out dwarf file info
- MachineDebugInfo &DebugInfo = MF.getDebugInfo();
- std::vector<std::string> 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
EmitConstantPool(MF.getConstantPool());
// Print out labels for the function.
const Function *F = MF.getFunction();
+ SwitchToTextSection(getSectionForFunction(*F).c_str(), F);
+
switch (F->getLinkage()) {
default: assert(0 && "Unknown linkage type!");
case Function::InternalLinkage: // Symbols default to internal.
- 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;
}
+ 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 << PrivateGlobalPrefix << "BB" << getFunctionNumber() << '_'
- << 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) {
}
}
+ // Print out jump tables referenced by the function.
+ EmitJumpTableInfo(MF.getJumpTableInfo(), MF);
+
+ // Emit post-function debug information.
+ DW.EndFunction();
+
// We didn't modify anything.
return false;
}
bool DarwinAsmPrinter::doInitialization(Module &M) {
- if (TM.getSubtarget<PPCSubtarget>().isGigaProcessor())
+ if (Subtarget.isGigaProcessor())
O << "\t.machine ppc970\n";
AsmPrinter::doInitialization(M);
// Darwin wants symbols to be quoted if they have complex names.
Mang->setUseQuotes(true);
+
+ // Prime text sections so they are adjacent. This reduces the likelihood a
+ // large data or debug section causes a branch to exceed 16M limit.
+ SwitchToTextSection(".section __TEXT,__textcoal_nt,coalesced,"
+ "pure_instructions");
+ if (TM.getRelocationModel() == Reloc::PIC_) {
+ SwitchToTextSection(".section __TEXT,__picsymbolstub1,symbol_stubs,"
+ "pure_instructions,32");
+ } else if (TM.getRelocationModel() == Reloc::DynamicNoPIC) {
+ SwitchToTextSection(".section __TEXT,__symbol_stub1,symbol_stubs,"
+ "pure_instructions,16");
+ }
+ SwitchToTextSection(TAI->getTextSection());
+
+ // 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();
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))
+ if (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());
+ unsigned Size = TD->getTypeSize(C->getType());
+ unsigned Align = TD->getPreferredAlignmentLog(I);
if (C->isNullValue() && /* FIXME: Verify correct */
(I->hasInternalLinkage() || I->hasWeakLinkage() ||
- I->hasLinkOnceLinkage())) {
- SwitchSection(".data", I);
+ I->hasLinkOnceLinkage() ||
+ (I->hasExternalLinkage() && !I->hasSection()))) {
if (Size == 0) Size = 1; // .comm Foo, 0 is undefined, avoid it.
- if (I->hasInternalLinkage())
- O << LCOMMDirective << name << "," << Size << "," << Align;
- else
+ 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 {
+ SwitchToDataSection("\t.data", I);
O << ".comm " << name << "," << Size;
+ }
O << "\t\t; '" << I->getName() << "'\n";
} else {
switch (I->getLinkage()) {
case GlobalValue::WeakLinkage:
O << "\t.globl " << name << '\n'
<< "\t.weak_definition " << name << '\n';
- SwitchSection(".section __DATA,__datacoal_nt,coalesced", I);
+ SwitchToDataSection(".section __DATA,__datacoal_nt,coalesced", I);
break;
case GlobalValue::AppendingLinkage:
// FIXME: appending linkage variables should go into a section of
O << "\t.globl " << name << "\n";
// FALL THROUGH
case GlobalValue::InternalLinkage:
- SwitchSection(".data", I);
+ if (I->isConstant()) {
+ const ConstantArray *CVA = dyn_cast<ConstantArray>(C);
+ if (TAI->getCStringSection() && CVA && CVA->isCString()) {
+ SwitchToDataSection(TAI->getCStringSection(), I);
+ break;
+ }
+ }
+
+ SwitchToDataSection("\t.data", I);
break;
default:
- std::cerr << "Unknown linkage type!";
+ cerr << "Unknown linkage type!";
abort();
}
EmitAlignment(Align, I);
O << name << ":\t\t\t\t; '" << I->getName() << "'\n";
+
+ // If the initializer is a extern weak symbol, remember to emit the weak
+ // reference!
+ if (const GlobalValue *GV = dyn_cast<GlobalValue>(C))
+ if (GV->hasExternalWeakLinkage())
+ ExtWeakSymbols.insert(Mang->getValueName(GV));
+
EmitGlobalConstant(C);
+ O << '\n';
}
}
+ if (TAI->getWeakRefDirective()) {
+ if (ExtWeakSymbols.begin() != ExtWeakSymbols.end())
+ SwitchToDataSection("");
+ for (std::set<std::string>::iterator i = ExtWeakSymbols.begin(),
+ e = ExtWeakSymbols.end(); i != e; ++i) {
+ O << TAI->getWeakRefDirective() << *i << "\n";
+ }
+ }
+
+ bool isPPC64 = TD->getPointerSizeInBits() == 64;
+
// Output stubs for dynamically-linked functions
- if (PICEnabled) {
+ if (TM.getRelocationModel() == Reloc::PIC_) {
for (std::set<std::string>::iterator i = FnStubs.begin(), e = FnStubs.end();
i != e; ++i) {
- SwitchSection(".section __TEXT,__picsymbolstub1,symbol_stubs,"
- "pure_instructions,32", 0);
- EmitAlignment(2);
+ SwitchToTextSection(".section __TEXT,__picsymbolstub1,symbol_stubs,"
+ "pure_instructions,32");
+ EmitAlignment(4);
O << "L" << *i << "$stub:\n";
O << "\t.indirect_symbol " << *i << "\n";
O << "\tmflr r0\n";
O << "\tmflr r11\n";
O << "\taddis r11,r11,ha16(L" << *i << "$lazy_ptr-L0$" << *i << ")\n";
O << "\tmtlr r0\n";
- O << "\tlwzu r12,lo16(L" << *i << "$lazy_ptr-L0$" << *i << ")(r11)\n";
+ if (isPPC64)
+ O << "\tldu r12,lo16(L" << *i << "$lazy_ptr-L0$" << *i << ")(r11)\n";
+ else
+ O << "\tlwzu r12,lo16(L" << *i << "$lazy_ptr-L0$" << *i << ")(r11)\n";
O << "\tmtctr r12\n";
O << "\tbctr\n";
- SwitchSection(".lazy_symbol_pointer", 0);
+ SwitchToDataSection(".lazy_symbol_pointer");
O << "L" << *i << "$lazy_ptr:\n";
O << "\t.indirect_symbol " << *i << "\n";
- O << "\t.long dyld_stub_binding_helper\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) {
- SwitchSection(".section __TEXT,__symbol_stub1,symbol_stubs,"
- "pure_instructions,16", 0);
+ 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";
- O << "\tlwzu r12,lo16(L" << *i << "$lazy_ptr)(r11)\n";
+ if (isPPC64)
+ O << "\tldu r12,lo16(L" << *i << "$lazy_ptr)(r11)\n";
+ else
+ O << "\tlwzu r12,lo16(L" << *i << "$lazy_ptr)(r11)\n";
O << "\tmtctr r12\n";
O << "\tbctr\n";
- SwitchSection(".lazy_symbol_pointer", 0);
+ SwitchToDataSection(".lazy_symbol_pointer");
O << "L" << *i << "$lazy_ptr:\n";
O << "\t.indirect_symbol " << *i << "\n";
- O << "\t.long dyld_stub_binding_helper\n";
+ if (isPPC64)
+ O << "\t.quad dyld_stub_binding_helper\n";
+ else
+ O << "\t.long dyld_stub_binding_helper\n";
}
}
// Output stubs for external and common global variables.
if (GVStubs.begin() != GVStubs.end()) {
- SwitchSection(".non_lazy_symbol_pointer", 0);
+ 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";
- O << "\t.long\t0\n";
+ if (isPPC64)
+ O << "\t.quad\t0\n";
+ else
+ O << "\t.long\t0\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
// implementation of multiple entry points). If this doesn't occur, the
return false; // success
}
-/// runOnMachineFunction - This uses the printMachineInstruction()
-/// method to print assembly for each instruction.
-///
-bool AIXAsmPrinter::runOnMachineFunction(MachineFunction &MF) {
- SetupMachineFunction(MF);
- // Print out constants referenced by the function
- EmitConstantPool(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 << 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.
- O << "\t";
- printMachineInstruction(II);
- }
- }
-
- 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;
-}
-
-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;
-
- IncrementFunctionNumber();
- std::string Name = GV->getName();
- std::string Label = "LC.." + utostr(getFunctionNumber());
- GVToLabelMap[GV] = Label;
- O << Label << ":\n"
- << "\t.tc " << Name << "[TC]," << Name;
- if (GV->isExternal()) O << "[RW]";
- O << '\n';
- }
-
- AsmPrinter::doInitialization(M);
- return false; // success
+/// 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.
+///
+FunctionPass *llvm::createPPCAsmPrinterPass(std::ostream &o,
+ PPCTargetMachine &tm) {
+ return new DarwinAsmPrinter(o, tm, tm.getTargetAsmInfo());
}
-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" << CommentString << " ";
- 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