-//===-- MipsAsmPrinter.cpp - Mips LLVM assembly writer --------------------===//
+//===-- MipsAsmPrinter.cpp - Mips LLVM Assembly Printer -------------------===//
//
// The LLVM Compiler Infrastructure
//
//===----------------------------------------------------------------------===//
#define DEBUG_TYPE "mips-asm-printer"
+#include "MipsAsmPrinter.h"
+#include "InstPrinter/MipsInstPrinter.h"
+#include "MCTargetDesc/MipsBaseInfo.h"
#include "Mips.h"
-#include "MipsSubtarget.h"
#include "MipsInstrInfo.h"
-#include "MipsTargetMachine.h"
-#include "MipsMachineFunction.h"
+#include "MipsMCInstLower.h"
+#include "llvm/ADT/SmallString.h"
+#include "llvm/ADT/StringExtras.h"
+#include "llvm/ADT/Twine.h"
#include "llvm/BasicBlock.h"
-#include "llvm/Instructions.h"
-#include "llvm/CodeGen/AsmPrinter.h"
-#include "llvm/CodeGen/MachineFunctionPass.h"
#include "llvm/CodeGen/MachineConstantPool.h"
#include "llvm/CodeGen/MachineFrameInfo.h"
+#include "llvm/CodeGen/MachineFunctionPass.h"
#include "llvm/CodeGen/MachineInstr.h"
-#include "llvm/MC/MCStreamer.h"
+#include "llvm/CodeGen/MachineMemOperand.h"
+#include "llvm/DataLayout.h"
+#include "llvm/InlineAsm.h"
+#include "llvm/Instructions.h"
#include "llvm/MC/MCAsmInfo.h"
+#include "llvm/MC/MCInst.h"
+#include "llvm/MC/MCStreamer.h"
#include "llvm/MC/MCSymbol.h"
+#include "llvm/Support/TargetRegistry.h"
+#include "llvm/Support/raw_ostream.h"
#include "llvm/Target/Mangler.h"
-#include "llvm/Target/TargetData.h"
#include "llvm/Target/TargetLoweringObjectFile.h"
-#include "llvm/Target/TargetMachine.h"
#include "llvm/Target/TargetOptions.h"
-#include "llvm/Target/TargetRegistry.h"
-#include "llvm/ADT/SmallString.h"
-#include "llvm/ADT/StringExtras.h"
-#include "llvm/ADT/Twine.h"
-#include "llvm/Support/raw_ostream.h"
-#include "llvm/Analysis/DebugInfo.h"
using namespace llvm;
-namespace {
- class MipsAsmPrinter : public AsmPrinter {
- const MipsSubtarget *Subtarget;
- public:
- explicit MipsAsmPrinter(TargetMachine &TM, MCStreamer &Streamer)
- : AsmPrinter(TM, Streamer) {
- Subtarget = &TM.getSubtarget<MipsSubtarget>();
- }
+bool MipsAsmPrinter::runOnMachineFunction(MachineFunction &MF) {
+ MipsFI = MF.getInfo<MipsFunctionInfo>();
+ AsmPrinter::runOnMachineFunction(MF);
+ return true;
+}
- virtual const char *getPassName() const {
- return "Mips Assembly Printer";
- }
+bool MipsAsmPrinter::lowerOperand(const MachineOperand &MO, MCOperand &MCOp) {
+ MCOp = MCInstLowering.LowerOperand(MO);
+ return MCOp.isValid();
+}
- bool PrintAsmOperand(const MachineInstr *MI, unsigned OpNo,
- unsigned AsmVariant, const char *ExtraCode,
- raw_ostream &O);
- bool PrintAsmMemoryOperand(const MachineInstr *MI, unsigned OpNum,
- unsigned AsmVariant, const char *ExtraCode,
- raw_ostream &O);
- void printOperand(const MachineInstr *MI, int opNum, raw_ostream &O);
- void printUnsignedImm(const MachineInstr *MI, int opNum, raw_ostream &O);
- void printMemOperand(const MachineInstr *MI, int opNum, raw_ostream &O,
- const char *Modifier = 0);
- void printFCCOperand(const MachineInstr *MI, int opNum, raw_ostream &O,
- const char *Modifier = 0);
- void printSavedRegsBitmask(raw_ostream &O);
- void printHex32(unsigned int Value, raw_ostream &O);
-
- const char *getCurrentABIString() const;
- void emitFrameDirective();
-
- void printInstruction(const MachineInstr *MI, raw_ostream &O); // autogen'd.
- void EmitInstruction(const MachineInstr *MI) {
- SmallString<128> Str;
- raw_svector_ostream OS(Str);
-
- if (MI->isDebugValue())
- PrintDebugValueComment(MI, OS);
-
- printInstruction(MI, OS);
- OutStreamer.EmitRawText(OS.str());
- }
- virtual void EmitFunctionBodyStart();
- virtual void EmitFunctionBodyEnd();
- virtual bool isBlockOnlyReachableByFallthrough(const MachineBasicBlock*
- MBB) const;
- static const char *getRegisterName(unsigned RegNo);
+#include "MipsGenMCPseudoLowering.inc"
- virtual void EmitFunctionEntryLabel();
- void EmitStartOfAsmFile(Module &M);
- virtual MachineLocation getDebugValueLocation(const MachineInstr *MI) const;
+void MipsAsmPrinter::EmitInstruction(const MachineInstr *MI) {
+ if (MI->isDebugValue()) {
+ SmallString<128> Str;
+ raw_svector_ostream OS(Str);
- void PrintDebugValueComment(const MachineInstr *MI, raw_ostream &OS);
- };
-} // end of anonymous namespace
+ PrintDebugValueComment(MI, OS);
+ return;
+ }
+
+ // Do any auto-generated pseudo lowerings.
+ if (emitPseudoExpansionLowering(OutStreamer, MI))
+ return;
+
+ MachineBasicBlock::const_instr_iterator I = MI;
+ MachineBasicBlock::const_instr_iterator E = MI->getParent()->instr_end();
-#include "MipsGenAsmWriter.inc"
+ do {
+ MCInst TmpInst0;
+ MCInstLowering.Lower(I++, TmpInst0);
+
+ OutStreamer.EmitInstruction(TmpInst0);
+ } while ((I != E) && I->isInsideBundle()); // Delay slot check
+}
//===----------------------------------------------------------------------===//
//
const MachineFrameInfo *MFI = MF->getFrameInfo();
const std::vector<CalleeSavedInfo> &CSI = MFI->getCalleeSavedInfo();
// size of stack area to which FP callee-saved regs are saved.
- unsigned CPURegSize = Mips::CPURegsRegisterClass->getSize();
- unsigned FGR32RegSize = Mips::FGR32RegisterClass->getSize();
- unsigned AFGR64RegSize = Mips::AFGR64RegisterClass->getSize();
+ unsigned CPURegSize = Mips::CPURegsRegClass.getSize();
+ unsigned FGR32RegSize = Mips::FGR32RegClass.getSize();
+ unsigned AFGR64RegSize = Mips::AFGR64RegClass.getSize();
bool HasAFGR64Reg = false;
unsigned CSFPRegsSize = 0;
unsigned i, e = CSI.size();
// Set FPU Bitmask.
for (i = 0; i != e; ++i) {
unsigned Reg = CSI[i].getReg();
- if (Mips::CPURegsRegisterClass->contains(Reg))
+ if (Mips::CPURegsRegClass.contains(Reg))
break;
- unsigned RegNum = MipsRegisterInfo::getRegisterNumbering(Reg);
- if (Mips::AFGR64RegisterClass->contains(Reg)) {
+ unsigned RegNum = TM.getRegisterInfo()->getEncodingValue(Reg);
+ if (Mips::AFGR64RegClass.contains(Reg)) {
FPUBitmask |= (3 << RegNum);
CSFPRegsSize += AFGR64RegSize;
HasAFGR64Reg = true;
// Set CPU Bitmask.
for (; i != e; ++i) {
unsigned Reg = CSI[i].getReg();
- unsigned RegNum = MipsRegisterInfo::getRegisterNumbering(Reg);
+ unsigned RegNum = TM.getRegisterInfo()->getEncodingValue(Reg);
CPUBitmask |= (1 << RegNum);
}
void MipsAsmPrinter::printHex32(unsigned Value, raw_ostream &O) {
O << "0x";
for (int i = 7; i >= 0; i--)
- O << utohexstr((Value & (0xF << (i*4))) >> (i*4));
+ O.write_hex((Value & (0xF << (i*4))) >> (i*4));
}
//===----------------------------------------------------------------------===//
unsigned returnReg = RI.getRARegister();
unsigned stackSize = MF->getFrameInfo()->getStackSize();
- OutStreamer.EmitRawText("\t.frame\t$" +
- Twine(LowercaseString(getRegisterName(stackReg))) +
- "," + Twine(stackSize) + ",$" +
- Twine(LowercaseString(getRegisterName(returnReg))));
+ if (OutStreamer.hasRawTextSupport())
+ OutStreamer.EmitRawText("\t.frame\t$" +
+ StringRef(MipsInstPrinter::getRegisterName(stackReg)).lower() +
+ "," + Twine(stackSize) + ",$" +
+ StringRef(MipsInstPrinter::getRegisterName(returnReg)).lower());
}
/// Emit Set directives.
const char *MipsAsmPrinter::getCurrentABIString() const {
switch (Subtarget->getTargetABI()) {
case MipsSubtarget::O32: return "abi32";
- case MipsSubtarget::O64: return "abiO64";
case MipsSubtarget::N32: return "abiN32";
case MipsSubtarget::N64: return "abi64";
case MipsSubtarget::EABI: return "eabi32"; // TODO: handle eabi64
- default: break;
+ default: llvm_unreachable("Unknown Mips ABI");
}
-
- llvm_unreachable("Unknown Mips ABI");
- return NULL;
}
void MipsAsmPrinter::EmitFunctionEntryLabel() {
- OutStreamer.EmitRawText("\t.ent\t" + Twine(CurrentFnSym->getName()));
+ if (OutStreamer.hasRawTextSupport()) {
+ if (Subtarget->inMips16Mode())
+ OutStreamer.EmitRawText(StringRef("\t.set\tmips16"));
+ else
+ OutStreamer.EmitRawText(StringRef("\t.set\tnomips16"));
+ // leave out until FSF available gas has micromips changes
+ // OutStreamer.EmitRawText(StringRef("\t.set\tnomicromips"));
+ OutStreamer.EmitRawText("\t.ent\t" + Twine(CurrentFnSym->getName()));
+ }
OutStreamer.EmitLabel(CurrentFnSym);
}
/// EmitFunctionBodyStart - Targets can override this to emit stuff before
/// the first basic block in the function.
void MipsAsmPrinter::EmitFunctionBodyStart() {
+ MCInstLowering.Initialize(Mang, &MF->getContext());
+
emitFrameDirective();
- SmallString<128> Str;
- raw_svector_ostream OS(Str);
- printSavedRegsBitmask(OS);
- OutStreamer.EmitRawText(OS.str());
+ if (OutStreamer.hasRawTextSupport()) {
+ SmallString<128> Str;
+ raw_svector_ostream OS(Str);
+ printSavedRegsBitmask(OS);
+ OutStreamer.EmitRawText(OS.str());
+
+ OutStreamer.EmitRawText(StringRef("\t.set\tnoreorder"));
+ OutStreamer.EmitRawText(StringRef("\t.set\tnomacro"));
+ OutStreamer.EmitRawText(StringRef("\t.set\tnoat"));
+ }
}
/// EmitFunctionBodyEnd - Targets can override this to emit stuff after
// There are instruction for this macros, but they must
// always be at the function end, and we can't emit and
// break with BB logic.
- OutStreamer.EmitRawText(StringRef("\t.set\tmacro"));
- OutStreamer.EmitRawText(StringRef("\t.set\treorder"));
- OutStreamer.EmitRawText("\t.end\t" + Twine(CurrentFnSym->getName()));
+ if (OutStreamer.hasRawTextSupport()) {
+ OutStreamer.EmitRawText(StringRef("\t.set\tat"));
+ OutStreamer.EmitRawText(StringRef("\t.set\tmacro"));
+ OutStreamer.EmitRawText(StringRef("\t.set\treorder"));
+ OutStreamer.EmitRawText("\t.end\t" + Twine(CurrentFnSym->getName()));
+ }
}
-
/// isBlockOnlyReachableByFallthough - Return true if the basic block has
/// exactly one predecessor and the control transfer mechanism between
/// the predecessor and this block is a fall-through.
// If there isn't exactly one predecessor, it can't be a fall through.
MachineBasicBlock::const_pred_iterator PI = MBB->pred_begin(), PI2 = PI;
++PI2;
-
+
if (PI2 != MBB->pred_end())
- return false;
+ return false;
// The predecessor has to be immediately before this block.
if (!Pred->isLayoutSuccessor(MBB))
return false;
-
+
// If the block is completely empty, then it definitely does fall through.
if (Pred->empty())
return true;
-
+
// Otherwise, check the last instruction.
// Check if the last terminator is an unconditional branch.
MachineBasicBlock::const_iterator I = Pred->end();
- while (I != Pred->begin() && !(--I)->getDesc().isTerminator()) ;
+ while (I != Pred->begin() && !(--I)->isTerminator()) ;
- return !I->getDesc().isBarrier();
+ return !I->isBarrier();
}
// Print out an operand for an inline asm expression.
-bool MipsAsmPrinter::PrintAsmOperand(const MachineInstr *MI, unsigned OpNo,
+bool MipsAsmPrinter::PrintAsmOperand(const MachineInstr *MI, unsigned OpNum,
unsigned AsmVariant,const char *ExtraCode,
raw_ostream &O) {
// Does this asm operand have a single letter operand modifier?
- if (ExtraCode && ExtraCode[0])
- return true; // Unknown modifier.
+ if (ExtraCode && ExtraCode[0]) {
+ if (ExtraCode[1] != 0) return true; // Unknown modifier.
- printOperand(MI, OpNo, O);
+ const MachineOperand &MO = MI->getOperand(OpNum);
+ switch (ExtraCode[0]) {
+ default:
+ // See if this is a generic print operand
+ return AsmPrinter::PrintAsmOperand(MI,OpNum,AsmVariant,ExtraCode,O);
+ case 'X': // hex const int
+ if ((MO.getType()) != MachineOperand::MO_Immediate)
+ return true;
+ O << "0x" << StringRef(utohexstr(MO.getImm())).lower();
+ return false;
+ case 'x': // hex const int (low 16 bits)
+ if ((MO.getType()) != MachineOperand::MO_Immediate)
+ return true;
+ O << "0x" << StringRef(utohexstr(MO.getImm() & 0xffff)).lower();
+ return false;
+ case 'd': // decimal const int
+ if ((MO.getType()) != MachineOperand::MO_Immediate)
+ return true;
+ O << MO.getImm();
+ return false;
+ case 'm': // decimal const int minus 1
+ if ((MO.getType()) != MachineOperand::MO_Immediate)
+ return true;
+ O << MO.getImm() - 1;
+ return false;
+ case 'z': {
+ // $0 if zero, regular printing otherwise
+ if (MO.getType() != MachineOperand::MO_Immediate)
+ return true;
+ int64_t Val = MO.getImm();
+ if (Val)
+ O << Val;
+ else
+ O << "$0";
+ return false;
+ }
+ case 'D': // Second part of a double word register operand
+ case 'L': // Low order register of a double word register operand
+ case 'M': // High order register of a double word register operand
+ {
+ if (OpNum == 0)
+ return true;
+ const MachineOperand &FlagsOP = MI->getOperand(OpNum - 1);
+ if (!FlagsOP.isImm())
+ return true;
+ unsigned Flags = FlagsOP.getImm();
+ unsigned NumVals = InlineAsm::getNumOperandRegisters(Flags);
+ // Number of registers represented by this operand. We are looking
+ // for 2 for 32 bit mode and 1 for 64 bit mode.
+ if (NumVals != 2) {
+ if (Subtarget->isGP64bit() && NumVals == 1 && MO.isReg()) {
+ unsigned Reg = MO.getReg();
+ O << '$' << MipsInstPrinter::getRegisterName(Reg);
+ return false;
+ }
+ return true;
+ }
+
+ unsigned RegOp = OpNum;
+ if (!Subtarget->isGP64bit()){
+ // Endianess reverses which register holds the high or low value
+ // between M and L.
+ switch(ExtraCode[0]) {
+ case 'M':
+ RegOp = (Subtarget->isLittle()) ? OpNum + 1 : OpNum;
+ break;
+ case 'L':
+ RegOp = (Subtarget->isLittle()) ? OpNum : OpNum + 1;
+ break;
+ case 'D': // Always the second part
+ RegOp = OpNum + 1;
+ }
+ if (RegOp >= MI->getNumOperands())
+ return true;
+ const MachineOperand &MO = MI->getOperand(RegOp);
+ if (!MO.isReg())
+ return true;
+ unsigned Reg = MO.getReg();
+ O << '$' << MipsInstPrinter::getRegisterName(Reg);
+ return false;
+ }
+ }
+ }
+ }
+
+ printOperand(MI, OpNum, O);
return false;
}
const char *ExtraCode,
raw_ostream &O) {
if (ExtraCode && ExtraCode[0])
- return true; // Unknown modifier.
-
+ return true; // Unknown modifier.
+
const MachineOperand &MO = MI->getOperand(OpNum);
assert(MO.isReg() && "unexpected inline asm memory operand");
- O << "0($" << MipsAsmPrinter::getRegisterName(MO.getReg()) << ")";
+ O << "0($" << MipsInstPrinter::getRegisterName(MO.getReg()) << ")";
+
return false;
}
case MipsII::MO_GOTTPREL: O << "%gottprel("; break;
case MipsII::MO_TPREL_HI: O << "%tprel_hi("; break;
case MipsII::MO_TPREL_LO: O << "%tprel_lo("; break;
+ case MipsII::MO_GPOFF_HI: O << "%hi(%neg(%gp_rel("; break;
+ case MipsII::MO_GPOFF_LO: O << "%lo(%neg(%gp_rel("; break;
+ case MipsII::MO_GOT_DISP: O << "%got_disp("; break;
+ case MipsII::MO_GOT_PAGE: O << "%got_page("; break;
+ case MipsII::MO_GOT_OFST: O << "%got_ofst("; break;
}
switch (MO.getType()) {
case MachineOperand::MO_Register:
- O << '$' << LowercaseString(getRegisterName(MO.getReg()));
+ O << '$'
+ << StringRef(MipsInstPrinter::getRegisterName(MO.getReg())).lower();
break;
case MachineOperand::MO_Immediate:
break;
case MachineOperand::MO_BlockAddress: {
- MCSymbol* BA = GetBlockAddressSymbol(MO.getBlockAddress());
+ MCSymbol *BA = GetBlockAddressSymbol(MO.getBlockAddress());
O << BA->getName();
break;
}
}
void MipsAsmPrinter::
-printMemOperand(const MachineInstr *MI, int opNum, raw_ostream &O,
- const char *Modifier) {
- // when using stack locations for not load/store instructions
- // print the same way as all normal 3 operand instructions.
- if (Modifier && !strcmp(Modifier, "stackloc")) {
- printOperand(MI, opNum+1, O);
- O << ", ";
- printOperand(MI, opNum, O);
- return;
- }
-
+printMemOperand(const MachineInstr *MI, int opNum, raw_ostream &O) {
// Load/Store memory operands -- imm($reg)
// If PIC target the target is loaded as the
// pattern lw $25,%call16($28)
- printOperand(MI, opNum, O);
- O << "(";
printOperand(MI, opNum+1, O);
+ O << "(";
+ printOperand(MI, opNum, O);
O << ")";
}
+void MipsAsmPrinter::
+printMemOperandEA(const MachineInstr *MI, int opNum, raw_ostream &O) {
+ // when using stack locations for not load/store instructions
+ // print the same way as all normal 3 operand instructions.
+ printOperand(MI, opNum, O);
+ O << ", ";
+ printOperand(MI, opNum+1, O);
+ return;
+}
+
void MipsAsmPrinter::
printFCCOperand(const MachineInstr *MI, int opNum, raw_ostream &O,
const char *Modifier) {
- const MachineOperand& MO = MI->getOperand(opNum);
+ const MachineOperand &MO = MI->getOperand(opNum);
O << Mips::MipsFCCToString((Mips::CondCode)MO.getImm());
}
// FIXME: Use SwitchSection.
// Tell the assembler which ABI we are using
- OutStreamer.EmitRawText("\t.section .mdebug." + Twine(getCurrentABIString()));
+ if (OutStreamer.hasRawTextSupport())
+ OutStreamer.EmitRawText("\t.section .mdebug." +
+ Twine(getCurrentABIString()));
// TODO: handle O64 ABI
- if (Subtarget->isABI_EABI()) {
- if (Subtarget->isGP32bit())
- OutStreamer.EmitRawText(StringRef("\t.section .gcc_compiled_long32"));
- else
- OutStreamer.EmitRawText(StringRef("\t.section .gcc_compiled_long64"));
+ if (OutStreamer.hasRawTextSupport()) {
+ if (Subtarget->isABI_EABI()) {
+ if (Subtarget->isGP32bit())
+ OutStreamer.EmitRawText(StringRef("\t.section .gcc_compiled_long32"));
+ else
+ OutStreamer.EmitRawText(StringRef("\t.section .gcc_compiled_long64"));
+ }
}
// return to previous section
- OutStreamer.EmitRawText(StringRef("\t.previous"));
+ if (OutStreamer.hasRawTextSupport())
+ OutStreamer.EmitRawText(StringRef("\t.previous"));
}
MachineLocation
extern "C" void LLVMInitializeMipsAsmPrinter() {
RegisterAsmPrinter<MipsAsmPrinter> X(TheMipsTarget);
RegisterAsmPrinter<MipsAsmPrinter> Y(TheMipselTarget);
+ RegisterAsmPrinter<MipsAsmPrinter> A(TheMips64Target);
+ RegisterAsmPrinter<MipsAsmPrinter> B(TheMips64elTarget);
}