-//===-- PowerPCAsmPrinter.cpp - Print machine instrs to PowerPC assembly --===//
+//===-- PPCAsmPrinter.cpp - Print machine instrs to PowerPC assembly --------=//
//
// The LLVM Compiler Infrastructure
//
//===----------------------------------------------------------------------===//
#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"
namespace {
Statistic<> EmittedInsts("asm-printer", "Number of machine instrs printed");
- struct PowerPCAsmPrinter : public AsmPrinter {
+ struct PPCAsmPrinter : public AsmPrinter {
std::set<std::string> FnStubs, GVStubs, LinkOnceStubs;
- PowerPCAsmPrinter(std::ostream &O, TargetMachine &TM)
+ PPCAsmPrinter(std::ostream &O, TargetMachine &TM)
: AsmPrinter(O, TM), LabelNumber(0) {}
/// Unique incrementer for label values for referencing Global values.
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
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 {
MVT::ValueType VT) {
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 printBranchOperand(const MachineInstr *MI, unsigned OpNo,
MVT::ValueType VT) {
// Branches can take an immediate operand. This is used by the branch
}
void printSymbolHi(const MachineInstr *MI, unsigned OpNo,
MVT::ValueType VT) {
- O << "ha16(";
- printOp(MI->getOperand(OpNo));
- O << "-\"L0000" << LabelNumber << "$pb\")";
+ if (MI->getOperand(OpNo).isImmediate()) {
+ printS16ImmOperand(MI, OpNo, VT);
+ } else {
+ O << "ha16(";
+ printOp(MI->getOperand(OpNo));
+ if (PICEnabled)
+ O << "-\"L0000" << LabelNumber << "$pb\")";
+ else
+ O << ')';
+ }
}
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.
if (MI->getOperand(OpNo).isImmediate()) {
- O << (short)MI->getOperand(OpNo).getImmedValue();
+ printS16ImmOperand(MI, OpNo, VT);
} else {
O << "lo16(";
printOp(MI->getOperand(OpNo));
- O << "-\"L0000" << LabelNumber << "$pb\")";
+ if (PICEnabled)
+ O << "-\"L0000" << LabelNumber << "$pb\")";
+ else
+ O << ')';
}
}
- void printcrbit(const MachineInstr *MI, unsigned OpNo,
+ void printcrbitm(const MachineInstr *MI, unsigned OpNo,
MVT::ValueType VT) {
- unsigned char value = MI->getOperand(OpNo).getImmedValue();
- assert(value <= 3 && "Invalid crbit argument!");
- unsigned RegNo, CCReg = MI->getOperand(OpNo-1).getReg();
- switch (CCReg) {
- case PPC::CR0: RegNo = 0; break;
- case PPC::CR1: RegNo = 1; break;
- case PPC::CR2: RegNo = 2; break;
- case PPC::CR3: RegNo = 3; break;
- case PPC::CR4: RegNo = 4; break;
- case PPC::CR5: RegNo = 5; break;
- case PPC::CR6: RegNo = 6; break;
- case PPC::CR7: RegNo = 7; break;
- default:
- std::cerr << "Unhandled reg in enumRegToRealReg!\n";
- abort();
- }
- O << 4 * RegNo + value;
+ unsigned CCReg = MI->getOperand(OpNo).getReg();
+ unsigned RegNo = enumRegToMachineReg(CCReg);
+ O << (0x80 >> RegNo);
}
virtual void printConstantPool(MachineConstantPool *MCP) = 0;
/// DarwinAsmPrinter - PowerPC assembly printer, customized for Darwin/Mac OS
/// X
///
- struct DarwinAsmPrinter : public PowerPCAsmPrinter {
+ struct DarwinAsmPrinter : public PPCAsmPrinter {
DarwinAsmPrinter(std::ostream &O, TargetMachine &TM)
- : PowerPCAsmPrinter(O, TM) {
+ : PPCAsmPrinter(O, TM) {
CommentString = ";";
GlobalPrefix = "_";
ZeroDirective = "\t.space\t"; // ".space N" emits N zeros.
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 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.
}
}
-/// 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
/// Darwin assembler can deal with.
}
// Include the auto-generated portion of the assembly writer
-#include "PowerPCGenAsmWriter.inc"
+#include "PPCGenAsmWriter.inc"
-void PowerPCAsmPrinter::printOp(const MachineOperand &MO, bool IsCallOp) {
+void PPCAsmPrinter::printOp(const MachineOperand &MO, bool IsCallOp) {
const MRegisterInfo &RI = *TM.getRegisterInfo();
int new_symbol;
// 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:
case MachineOperand::MO_MachineBasicBlock: {
MachineBasicBlock *MBBOp = MO.getMachineBasicBlock();
- O << ".LBB" << Mang->getValueName(MBBOp->getParent()->getFunction())
+ O << "LBB" << Mang->getValueName(MBBOp->getParent()->getFunction())
<< "_" << MBBOp->getNumber() << "\t; "
<< MBBOp->getBasicBlock()->getName();
return;
}
case MachineOperand::MO_ConstantPoolIndex:
- O << ".CPI" << CurrentFnName << "_" << MO.getConstantPoolIndex();
+ O << "LCPI" << CurrentFnName << "_" << MO.getConstantPoolIndex();
return;
case MachineOperand::MO_ExternalSymbol:
/// 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;
// Print out labels for the function.
O << "\t.text\n";
- emitAlignment(2);
- O << "\t.globl\t" << CurrentFnName << "\n";
+ emitAlignment(4);
+ if (!MF.getFunction()->hasInternalLinkage())
+ O << "\t.globl\t" << CurrentFnName << "\n";
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 << "LBB" << CurrentFnName << "_" << 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.
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
+ // 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" << 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);
+ return false;
+}
+
bool DarwinAsmPrinter::doFinalization(Module &M) {
const TargetData &TD = TM.getTargetData();
std::string CurSection;
O << ".lcomm " << name << "," << Size << "," << Align;
else
O << ".comm " << name << "," << Size;
- O << "\t\t; ";
- WriteAsOperand(O, I, true, true, &M);
- O << '\n';
+ O << "\t\t; '" << I->getName() << "'\n";
} else {
switch (I->getLinkage()) {
case GlobalValue::LinkOnceLinkage:
<< ".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";
+ 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
}
emitAlignment(Align);
- O << name << ":\t\t\t\t; ";
- WriteAsOperand(O, I, true, true, &M);
- O << " = ";
- WriteAsOperand(O, C, false, false, &M);
- O << "\n";
+ O << name << ":\t\t\t\t; '" << I->getName() << "'\n";
emitGlobalConstant(C);
}
}
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 << "$lazy_ptr:\n";
O << "\t.indirect_symbol " << *i << "\n";
O << "\t.long dyld_stub_binding_helper\n";
+ } else {
+ O << "\t.section __TEXT,__symbol_stub1,symbol_stubs,pure_instructions,16\n";
+ emitAlignment(4);
+ O << "L" << *i << "$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";
+ }
}
O << "\n";
<< "\t.long\t" << *i << '\n';
}
+ // Funny Darwin hack: This flag tells the linker that no global symbols
+ // contain code that falls through to other global symbols (e.g. the obvious
+ // implementation of multiple entry points). If this doesn't occur, the
+ // linker can safely perform dead code stripping. Since LLVM never generates
+ // code that does this, it is always safe to set.
+ O << "\t.subsections_via_symbols\n";
+
AsmPrinter::doFinalization(M);
return false; // success
}
O << "\t.const\n";
O << "\t.align " << (unsigned)TD.getTypeAlignment(CP[i]->getType())
<< "\n";
- O << ".CPI" << CurrentFnName << "_" << i << ":\t\t\t\t\t;"
+ O << "LCPI" << CurrentFnName << "_" << i << ":\t\t\t\t\t;"
<< *CP[i] << "\n";
emitGlobalConstant(CP[i]);
}
<< "\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) {
+ for (Module::const_global_iterator I = M.global_begin(), E = M.global_end();
+ I != E; ++I) {
if (!I->hasInitializer())
continue;
// 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) {
+ 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())
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_global_iterator I = M.global_begin(), E = M.global_end(); 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);
+ 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