-//===-- PowerPCAsmPrinter.cpp - Print machine instrs to PowerPC assembly --===//
-//
+//===-- PPCAsmPrinter.cpp - Print machine instrs to PowerPC assembly --------=//
+//
// The LLVM Compiler Infrastructure
//
// This file was developed by the LLVM research group and is distributed under
// the University of Illinois Open Source License. See LICENSE.TXT for details.
-//
+//
//===----------------------------------------------------------------------===//
//
// This file contains a printer that converts from our internal representation
//===----------------------------------------------------------------------===//
#define DEBUG_TYPE "asmprinter"
-#include "PowerPC.h"
-#include "PowerPCTargetMachine.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/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/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");
- struct PowerPCAsmPrinter : public AsmPrinter {
- std::set<std::string> FnStubs, GVStubs, LinkOnceStubs;
- std::set<std::string> Strings;
+ class PPCAsmPrinter : public AsmPrinter {
+ public:
+ std::set<std::string> FnStubs, GVStubs;
- PowerPCAsmPrinter(std::ostream &O, TargetMachine &TM)
- : AsmPrinter(O, TM), LabelNumber(0) {}
+ PPCAsmPrinter(std::ostream &O, TargetMachine &TM)
+ : AsmPrinter(O, TM) {}
- /// Unique incrementer for label values for referencing Global values.
- ///
- unsigned LabelNumber;
-
virtual const char *getPassName() const {
return "PowerPC Assembly Printer";
}
- PowerPCTargetMachine &getTM() {
- return static_cast<PowerPCTargetMachine&>(TM);
+ PPCTargetMachine &getTM() {
+ return static_cast<PPCTargetMachine&>(TM);
+ }
+
+ unsigned enumRegToMachineReg(unsigned enumReg) {
+ switch (enumReg) {
+ default: assert(0 && "Unhandled register!"); break;
+ case PPC::CR0: return 0;
+ case PPC::CR1: return 1;
+ case PPC::CR2: return 2;
+ case PPC::CR3: return 3;
+ case PPC::CR4: return 4;
+ case PPC::CR5: return 5;
+ case PPC::CR6: return 6;
+ case PPC::CR7: return 7;
+ }
+ abort();
}
/// printInstruction - This method is automatically generated by tablegen
bool printInstruction(const MachineInstr *MI);
void printMachineInstruction(const MachineInstr *MI);
- void printOp(const MachineOperand &MO, bool LoadAddrOp = 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??");
- O << LowercaseString(TM.getRegisterInfo()->get(MO.getReg()).Name);
+ O << TM.getRegisterInfo()->get(MO.getReg()).Name;
} else if (MO.isImmediate()) {
O << MO.getImmedValue();
} else {
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 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() << '\n';
+ O << "$+" << MI->getOperand(OpNo).getImmedValue();
+ } else {
+ printOp(MI->getOperand(OpNo));
+ }
+ }
+ void printCallOperand(const MachineInstr *MI, unsigned OpNo) {
+ const MachineOperand &MO = MI->getOperand(OpNo);
+ if (TM.getRelocationModel() != Reloc::Static) {
+ if (MO.getType() == MachineOperand::MO_GlobalAddress) {
+ GlobalValue *GV = MO.getGlobal();
+ if (((GV->isExternal() || GV->hasWeakLinkage() ||
+ GV->hasLinkOnceLinkage()))) {
+ // Dynamically-resolved functions need a stub for the function.
+ std::string Name = Mang->getValueName(GV);
+ FnStubs.insert(Name);
+ O << "L" << Name << "$stub";
+ return;
+ }
+ }
+ if (MO.getType() == MachineOperand::MO_ExternalSymbol) {
+ std::string Name(GlobalPrefix); Name += MO.getSymbolName();
+ FnStubs.insert(Name);
+ O << "L" << Name << "$stub";
+ return;
+ }
+ }
+
+ printOp(MI->getOperand(OpNo));
+ }
+ void printAbsAddrOperand(const MachineInstr *MI, unsigned OpNo) {
+ O << (int)MI->getOperand(OpNo).getImmedValue()*4;
+ }
+ void printPICLabel(const MachineInstr *MI, unsigned OpNo) {
+ O << "\"L" << getFunctionNumber() << "$pb\"\n";
+ O << "\"L" << getFunctionNumber() << "$pb\":";
+ }
+ void printSymbolHi(const MachineInstr *MI, unsigned OpNo) {
+ if (MI->getOperand(OpNo).isImmediate()) {
+ printS16ImmOperand(MI, OpNo);
} else {
+ O << "ha16(";
printOp(MI->getOperand(OpNo));
+ if (TM.getRelocationModel() == Reloc::PIC)
+ O << "-\"L" << getFunctionNumber() << "$pb\")";
+ else
+ O << ')';
}
}
- 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 printSymbolHi(const MachineInstr *MI, unsigned OpNo,
- MVT::ValueType VT) {
- O << "ha16(";
- printOp(MI->getOperand(OpNo), true /* LoadAddrOp */);
- O << "-\"L0000" << LabelNumber << "$pb\")";
- }
- void printSymbolLo(const MachineInstr *MI, unsigned OpNo,
- MVT::ValueType VT) {
- // FIXME: Because LFS, LFD, and LWZ can be used either with a s16imm or
- // a lo16 of a global or constant pool operand, we must handle both here.
- // this isn't a great design, but it works for now.
+ void printSymbolLo(const MachineInstr *MI, unsigned OpNo) {
if (MI->getOperand(OpNo).isImmediate()) {
- O << (short)MI->getOperand(OpNo).getImmedValue();
+ printS16ImmOperand(MI, OpNo);
} else {
O << "lo16(";
- printOp(MI->getOperand(OpNo), true /* LoadAddrOp */);
- O << "-\"L0000" << LabelNumber << "$pb\")";
+ printOp(MI->getOperand(OpNo));
+ if (TM.getRelocationModel() == Reloc::PIC)
+ O << "-\"L" << getFunctionNumber() << "$pb\")";
+ else
+ O << ')';
}
}
-
- virtual void printConstantPool(MachineConstantPool *MCP) = 0;
- virtual bool runOnMachineFunction(MachineFunction &F) = 0;
+ void printcrbitm(const MachineInstr *MI, unsigned OpNo) {
+ unsigned CCReg = MI->getOperand(OpNo).getReg();
+ unsigned RegNo = enumRegToMachineReg(CCReg);
+ O << (0x80 >> RegNo);
+ }
+ // 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;
+
};
-
+
+ /// DarwinDwarfWriter - Dwarf debug info writer customized for Darwin/Mac OS X
+ ///
+ struct DarwinDwarfWriter : public DwarfWriter {
+ // Ctor.
+ DarwinDwarfWriter(std::ostream &o, AsmPrinter *ap)
+ : DwarfWriter(o, ap)
+ {
+ needsSet = true;
+ DwarfAbbrevSection = ".section __DWARFA,__debug_abbrev";
+ DwarfInfoSection = ".section __DWARFA,__debug_info";
+ DwarfLineSection = ".section __DWARFA,__debug_line";
+ DwarfFrameSection = ".section __DWARFA,__debug_frame";
+ DwarfPubNamesSection = ".section __DWARFA,__debug_pubnames";
+ DwarfPubTypesSection = ".section __DWARFA,__debug_pubtypes";
+ DwarfStrSection = ".section __DWARFA,__debug_str";
+ DwarfLocSection = ".section __DWARFA,__debug_loc";
+ DwarfARangesSection = ".section __DWARFA,__debug_aranges";
+ DwarfRangesSection = ".section __DWARFA,__debug_ranges";
+ DwarfMacInfoSection = ".section __DWARFA,__debug_macinfo";
+ TextSection = ".text";
+ DataSection = ".data";
+ }
+ };
+
/// DarwinAsmPrinter - PowerPC assembly printer, customized for Darwin/Mac OS
/// X
- ///
- struct DarwinAsmPrinter : public PowerPCAsmPrinter {
+ struct DarwinAsmPrinter : public PPCAsmPrinter {
+
+ DarwinDwarfWriter DW;
DarwinAsmPrinter(std::ostream &O, TargetMachine &TM)
- : PowerPCAsmPrinter(O, TM) {
+ : PPCAsmPrinter(O, TM), DW(O, this) {
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";
+ InlineAsmStart = InlineAsmEnd = ""; // Don't use #APP/#NO_APP
}
virtual const char *getPassName() const {
return "Darwin PPC Assembly Printer";
}
-
- void printConstantPool(MachineConstantPool *MCP);
- bool runOnMachineFunction(MachineFunction &F);
+
+ bool runOnMachineFunction(MachineFunction &F);
+ bool doInitialization(Module &M);
bool doFinalization(Module &M);
+
+ void getAnalysisUsage(AnalysisUsage &AU) const {
+ AU.setPreservesAll();
+ AU.addRequired<MachineDebugInfo>();
+ PPCAsmPrinter::getAnalysisUsage(AU);
+ }
+
};
-
+
/// AIXAsmPrinter - PowerPC assembly printer, customized for AIX
///
- struct AIXAsmPrinter : public PowerPCAsmPrinter {
+ struct AIXAsmPrinter : public PPCAsmPrinter {
/// Map for labels corresponding to global variables
///
std::map<const GlobalVariable*,std::string> 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 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";
- }
-}
-
-/// isStringCompatible - Can we treat the specified array as a string?
-/// Only if it is an array of ubytes or non-negative sbytes.
-///
-static bool isStringCompatible(const ConstantArray *CVA) {
- const Type *ETy = cast<ArrayType>(CVA->getType())->getElementType();
- if (ETy == Type::UByteTy) return true;
- if (ETy != Type::SByteTy) return false;
-
- for (unsigned i = 0; i < CVA->getNumOperands(); ++i)
- if (cast<ConstantSInt>(CVA->getOperand(i))->getValue() < 0)
- return false;
-
- return true;
-}
-
-/// toOctal - Convert the low order bits of X into an octal digit.
-///
-static inline char toOctal(int X) {
- return (X&7)+'0';
-}
-
-// Possible states while outputting ASCII strings
-namespace {
- enum StringSection {
- None,
- Alpha,
- Numeric
- };
-}
-
-/// SwitchStringSection - manage the changes required to output bytes as
-/// characters in a string vs. numeric decimal values
-///
-static inline void SwitchStringSection(std::ostream &O, StringSection NewSect,
- StringSection &Current) {
- if (Current == None) {
- if (NewSect == Alpha)
- O << "\t.byte \"";
- else if (NewSect == Numeric)
- O << "\t.byte ";
- } else if (Current == Alpha) {
- if (NewSect == None)
- O << "\"";
- else if (NewSect == Numeric)
- O << "\"\n"
- << "\t.byte ";
- } else if (Current == Numeric) {
- if (NewSect == Alpha)
- O << '\n'
- << "\t.byte \"";
- else if (NewSect == Numeric)
- O << ", ";
- }
-
- Current = NewSect;
-}
-
-/// getAsCString - Return the specified array as a C compatible
-/// string, only if the predicate isStringCompatible is true.
-///
-static void printAsCString(std::ostream &O, const ConstantArray *CVA) {
- assert(isStringCompatible(CVA) && "Array is not string compatible!");
-
- if (CVA->getNumOperands() == 0)
- return;
-
- StringSection Current = None;
- for (unsigned i = 0, e = CVA->getNumOperands(); i != e; ++i) {
- unsigned char C = cast<ConstantInt>(CVA->getOperand(i))->getRawValue();
- if (C == '"') {
- SwitchStringSection(O, Alpha, Current);
- O << "\"\"";
- } else if (isprint(C)) {
- SwitchStringSection(O, Alpha, Current);
- O << C;
- } else {
- SwitchStringSection(O, Numeric, Current);
- O << utostr((unsigned)C);
- }
- }
- SwitchStringSection(O, None, Current);
- O << '\n';
-}
-
-/// createDarwinAsmPrinterPass - Returns a pass that prints the PPC assembly
-/// code for a MachineFunction to the given output stream, in a format that the
+/// 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) {
+FunctionPass *llvm::createDarwinAsmPrinter(std::ostream &o,
+ PPCTargetMachine &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
+/// 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) {
+FunctionPass *llvm::createAIXAsmPrinter(std::ostream &o, PPCTargetMachine &tm) {
return new AIXAsmPrinter(o, tm);
}
// Include the auto-generated portion of the assembly writer
-#include "PowerPCGenAsmWriter.inc"
+#include "PPCGenAsmWriter.inc"
-void PowerPCAsmPrinter::printOp(const MachineOperand &MO,
- bool LoadAddrOp /* = false */) {
+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()) {
// FALLTHROUGH
case MachineOperand::MO_MachineRegister:
case MachineOperand::MO_CCRegister:
- O << LowercaseString(RI.get(MO.getReg()).Name);
+ O << RI.get(MO.getReg()).Name;
return;
case MachineOperand::MO_SignExtendedImmed:
std::cerr << "Shouldn't use addPCDisp() when building PPC MachineInstrs";
abort();
return;
-
+
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:
- O << MO.getSymbolName();
+ // Computing the address of an external symbol, not calling it.
+ if (TM.getRelocationModel() != Reloc::Static) {
+ std::string Name(GlobalPrefix); Name += MO.getSymbolName();
+ 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);
+ int offset = MO.getOffset();
- // 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 $non_lazy_ptr below.
- Function *F = dyn_cast<Function>(GV);
- if (F && F->isExternal() && !LoadAddrOp &&
- getTM().CalledFunctions.count(F)) {
- FnStubs.insert(Name);
- O << "L" << Name << "$stub";
- return;
- }
-
// External or weakly linked global variables need non-lazily-resolved stubs
- if ((GV->isExternal() || GV->hasWeakLinkage()) &&
- getTM().AddressTaken.count(GV)) {
- GVStubs.insert(Name);
- O << "L" << Name << "$non_lazy_ptr";
- return;
- }
-
- if (F && LoadAddrOp && getTM().AddressTaken.count(GV)) {
- LinkOnceStubs.insert(Name);
- O << "L" << Name << "$non_lazy_ptr";
- return;
+ if (TM.getRelocationModel() != Reloc::Static) {
+ if (((GV->isExternal() || GV->hasWeakLinkage() ||
+ GV->hasLinkOnceLinkage()))) {
+ GVStubs.insert(Name);
+ O << "L" << Name << "$non_lazy_ptr";
+ return;
+ }
}
-
- O << Mang->getValueName(GV);
+
+ O << Name;
return;
}
-
+
default:
O << "<unknown operand type: " << MO.getType() << ">";
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.
///
-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;
+ unsigned char SH = MI->getOperand(2).getImmedValue();
+ unsigned char MB = MI->getOperand(3).getImmedValue();
+ unsigned char ME = MI->getOperand(4).getImmedValue();
+ if (SH <= 31 && MB == 0 && ME == (31-SH)) {
+ O << "slwi "; FoundMnemonic = true;
+ }
+ if (SH <= 31 && MB == (32-SH) && ME == 31) {
+ O << "srwi "; FoundMnemonic = true;
+ SH = 32-SH;
+ }
+ if (FoundMnemonic) {
+ printOperand(MI, 0);
+ O << ", ";
+ printOperand(MI, 1);
+ O << ", " << (unsigned int)SH << "\n";
+ return;
+ }
+ } else if (MI->getOpcode() == PPC::OR4 || 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; // Printer was automatically generated
-
+
assert(0 && "Unhandled instruction in asm writer!");
abort();
return;
}
+
/// runOnMachineFunction - This uses the printMachineInstruction()
/// method to print assembly for each instruction.
///
bool DarwinAsmPrinter::runOnMachineFunction(MachineFunction &MF) {
- setupMachineFunction(MF);
+ // FIXME - is this the earliest this can be set?
+ DW.SetDebugInfo(&getAnalysis<MachineDebugInfo>());
+
+ SetupMachineFunction(MF);
O << "\n\n";
+
+ // Emit pre-function debug information.
+ DW.BeginFunction(&MF);
// 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);
+ break;
+ case Function::ExternalLinkage:
+ SwitchSection(".text", 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";
// 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"
- << CommentString << " " << I->getBasicBlock()->getName() << "\n";
+ if (I != MF.begin()) {
+ O << PrivateGlobalPrefix << "BB" << getFunctionNumber() << '_'
+ << I->getNumber() << ":\t";
+ if (!I->getBasicBlock()->getName().empty())
+ O << CommentString << " " << I->getBasicBlock()->getName();
+ O << "\n";
+ }
for (MachineBasicBlock::const_iterator II = I->begin(), E = I->end();
II != E; ++II) {
// Print the assembly for the instruction.
printMachineInstruction(II);
}
}
- ++LabelNumber;
+
+ // 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) {
- O << "\t.const\n";
- 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<PPCSubtarget>().isGigaProcessor())
+ O << "\t.machine ppc970\n";
+ 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();
- std::string CurSection;
// Print out module-level global variables here.
- for (Module::const_giterator I = M.gbegin(), E = M.gend(); 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())) {
- SwitchSection(O, CurSection, ".data");
- if (I->hasInternalLinkage())
- O << ".lcomm " << name << "," << TD.getTypeSize(C->getType())
- << "," << Align;
- else
- O << ".comm " << name << "," << TD.getTypeSize(C->getType());
- O << "\t\t; ";
- WriteAsOperand(O, I, true, true, &M);
- O << '\n';
+ 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 (EmitSpecialLLVMGlobal(I))
+ continue;
+
+ std::string name = Mang->getValueName(I);
+ Constant *C = I->getInitializer();
+ unsigned Size = TD.getTypeSize(C->getType());
+ unsigned Align = 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()) {
+ SwitchSection(".data", I);
+ O << LCOMMDirective << name << "," << Size << "," << Align;
} 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: // FIXME: Verify correct for weak.
- // Nonnull linkonce -> weak
- O << "\t.weak " << name << "\n";
- SwitchSection(O, CurSection, "");
- O << "\t.section\t.llvm.linkonce.d." << name << ",\"aw\",@progbits\n";
- break;
- case GlobalValue::AppendingLinkage:
- // FIXME: appending linkage variables should go into a section of
- // their name or something. For now, just emit them as external.
- case GlobalValue::ExternalLinkage:
- // If external or appending, declare as a global symbol
- O << "\t.globl " << name << "\n";
- // FALL THROUGH
- case GlobalValue::InternalLinkage:
- SwitchSection(O, CurSection, ".data");
- break;
- }
-
- 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);
+ SwitchSection(".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';
+ 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);
+ O << '\n';
}
+ }
// Output stubs for dynamically-linked functions
- for (std::set<std::string>::iterator i = FnStubs.begin(), e = FnStubs.end();
- i != e; ++i)
- {
- 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 << "$lazy_ptr:\n";
- O << "\t.indirect_symbol " << *i << "\n";
- O << "\t.long dyld_stub_binding_helper\n";
+ if (TM.getRelocationModel() == Reloc::PIC) {
+ for (std::set<std::string>::iterator i = FnStubs.begin(), e = FnStubs.end();
+ i != e; ++i) {
+ SwitchSection(".section __TEXT,__picsymbolstub1,symbol_stubs,"
+ "pure_instructions,32", 0);
+ EmitAlignment(2);
+ O << "L" << *i << "$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 << "$lazy_ptr:\n";
+ O << "\t.indirect_symbol " << *i << "\n";
+ O << "\t.long dyld_stub_binding_helper\n";
+ }
+ } else {
+ for (std::set<std::string>::iterator i = FnStubs.begin(), e = FnStubs.end();
+ i != e; ++i) {
+ SwitchSection(".section __TEXT,__symbol_stub1,symbol_stubs,"
+ "pure_instructions,16", 0);
+ EmitAlignment(4);
+ O << "L" << *i << "$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 << "$lazy_ptr:\n";
+ O << "\t.indirect_symbol " << *i << "\n";
+ O << "\t.long dyld_stub_binding_helper\n";
+ }
}
O << "\n";
- // Output stubs for external global variables
- if (GVStubs.begin() != GVStubs.end())
- O << ".data\n.non_lazy_symbol_pointer\n";
- for (std::set<std::string>::iterator i = GVStubs.begin(), e = GVStubs.end();
- i != e; ++i) {
- O << "L" << *i << "$non_lazy_ptr:\n";
- O << "\t.indirect_symbol " << *i << "\n";
- O << "\t.long\t0\n";
- }
-
- // Output stubs for 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 << "$non_lazy_ptr:\n"
- << "\t.long\t" << *i << '\n';
+ // Output stubs for external and common global variables.
+ if (GVStubs.begin() != GVStubs.end()) {
+ SwitchSection(".non_lazy_symbol_pointer", 0);
+ for (std::set<std::string>::iterator I = GVStubs.begin(),
+ E = GVStubs.end(); I != E; ++I) {
+ O << "L" << *I << "$non_lazy_ptr:\n";
+ O << "\t.indirect_symbol " << *I << "\n";
+ O << "\t.long\t0\n";
+ }
}
-
+
+ // 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
+ // 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
}
-/// runOnMachineFunction - This uses the printMachineInstruction()
+/// runOnMachineFunction - This uses the e()
/// 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"
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.
printMachineInstruction(II);
}
}
- ++LabelNumber;
O << "LT.." << CurrentFnName << ":\n"
<< "\t.long 0\n"
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<Constant*> &CP = MCP->getConstants();
- const TargetData &TD = TM.getTargetData();
-
- if (CP.empty()) return;
-
- for (unsigned i = 0, e = CP.size(); i != e; ++i) {
- O << "\t.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"
+ O << "\t.machine \"ppc64\"\n"
<< "\t.toc\n"
<< "\t.csect .text[PR]\n";
// Print out module-level global variables
- for (Module::const_giterator I = M.gbegin(), E = M.gend(); I != E; ++I) {
+ 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()) {
+ 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);
+ EmitGlobalConstant(C);
}
// Output labels for globals
- if (M.gbegin() != M.gend()) O << "\t.toc\n";
- for (Module::const_giterator I = M.gbegin(), E = M.gend(); I != E; ++I) {
+ 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(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
}
bool AIXAsmPrinter::doFinalization(Module &M) {
const TargetData &TD = TM.getTargetData();
// Print out module-level global variables
- for (Module::const_giterator I = M.gbegin(), E = M.gend(); I != E; ++I) {
+ for (Module::const_global_iterator I = M.global_begin(), E = M.global_end();
+ I != E; ++I) {
if (I->hasInitializer() || I->hasExternalLinkage())
continue;
O << "\t.lcomm " << Name << ",16,_global.bss_c";
} else {
O << "\t.comm " << Name << "," << TD.getTypeSize(I->getType())
- << "," << log2((unsigned)TD.getTypeAlignment(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
}
projects / oota-llvm.git / blobdiff