#include "ARMBuildAttrs.h"
#include "ARMAddressingModes.h"
#include "ARMConstantPoolValue.h"
-#include "AsmPrinter/ARMInstPrinter.h"
+#include "InstPrinter/ARMInstPrinter.h"
#include "ARMMachineFunctionInfo.h"
#include "ARMMCInstLower.h"
#include "ARMTargetMachine.h"
+#include "ARMTargetObjectFile.h"
#include "llvm/Analysis/DebugInfo.h"
#include "llvm/Constants.h"
#include "llvm/Module.h"
#include "llvm/CodeGen/MachineModuleInfoImpls.h"
#include "llvm/CodeGen/MachineFunctionPass.h"
#include "llvm/CodeGen/MachineJumpTableInfo.h"
-#include "llvm/CodeGen/TargetLoweringObjectFileImpl.h"
#include "llvm/MC/MCAsmInfo.h"
+#include "llvm/MC/MCAssembler.h"
#include "llvm/MC/MCContext.h"
#include "llvm/MC/MCExpr.h"
#include "llvm/MC/MCInst.h"
#include "llvm/MC/MCSectionMachO.h"
+#include "llvm/MC/MCObjectStreamer.h"
#include "llvm/MC/MCStreamer.h"
#include "llvm/MC/MCSymbol.h"
#include "llvm/Target/Mangler.h"
#include <cctype>
using namespace llvm;
-static cl::opt<bool>
-EnableMCInst("enable-arm-mcinst-printer", cl::Hidden, cl::init(true),
- cl::desc("enable experimental asmprinter gunk in the arm backend"));
-
namespace llvm {
namespace ARM {
enum DW_ISA {
}
namespace {
+
+ // Per section and per symbol attributes are not supported.
+ // To implement them we would need the ability to delay this emission
+ // until the assembly file is fully parsed/generated as only then do we
+ // know the symbol and section numbers.
+ class AttributeEmitter {
+ public:
+ virtual void MaybeSwitchVendor(StringRef Vendor) = 0;
+ virtual void EmitAttribute(unsigned Attribute, unsigned Value) = 0;
+ virtual void Finish() = 0;
+ };
+
+ class AsmAttributeEmitter : public AttributeEmitter {
+ MCStreamer &Streamer;
+
+ public:
+ AsmAttributeEmitter(MCStreamer &Streamer_) : Streamer(Streamer_) {}
+ void MaybeSwitchVendor(StringRef Vendor) { }
+
+ void EmitAttribute(unsigned Attribute, unsigned Value) {
+ Streamer.EmitRawText("\t.eabi_attribute " +
+ Twine(Attribute) + ", " + Twine(Value));
+ }
+
+ void Finish() { }
+ };
+
+ class ObjectAttributeEmitter : public AttributeEmitter {
+ MCObjectStreamer &Streamer;
+ size_t SectionStart;
+ size_t TagStart;
+ StringRef CurrentVendor;
+ SmallString<64> Contents;
+
+ public:
+ ObjectAttributeEmitter(MCObjectStreamer &Streamer_) :
+ Streamer(Streamer_), CurrentVendor("") { }
+
+ void MaybeSwitchVendor(StringRef Vendor) {
+ assert(!Vendor.empty() && "Vendor cannot be empty.");
+
+ if (CurrentVendor.empty())
+ CurrentVendor = Vendor;
+ else if (CurrentVendor == Vendor)
+ return;
+ else
+ Finish();
+
+ CurrentVendor = Vendor;
+
+ SectionStart = Contents.size();
+
+ // Length of the data for this vendor.
+ Contents.append(4, (char)0);
+
+ Contents.append(Vendor.begin(), Vendor.end());
+ Contents += 0;
+
+ Contents += ARMBuildAttrs::File;
+
+ TagStart = Contents.size();
+
+ // Length of the data for this tag.
+ Contents.append(4, (char)0);
+ }
+
+ void EmitAttribute(unsigned Attribute, unsigned Value) {
+ // FIXME: should be ULEB
+ Contents += Attribute;
+ Contents += Value;
+ }
+
+ void Finish() {
+ size_t EndPos = Contents.size();
+
+ // FIXME: endian.
+ *((uint32_t*)&Contents[SectionStart]) = EndPos - SectionStart;
+
+ // +1 since it includes the tag that came before it.
+ *((uint32_t*)&Contents[TagStart]) = EndPos - TagStart + 1;
+
+ Streamer.EmitBytes(Contents, 0);
+ }
+ };
+
class ARMAsmPrinter : public AsmPrinter {
/// Subtarget - Keep a pointer to the ARMSubtarget around so that we can
return "ARM Assembly Printer";
}
- void EmitJumpTable(const MachineInstr *MI);
- void EmitJump2Table(const MachineInstr *MI);
- void printInstructionThroughMCStreamer(const MachineInstr *MI);
-
-
void printOperand(const MachineInstr *MI, int OpNum, raw_ostream &O,
const char *Modifier = 0);
- void printSOImmOperand(const MachineInstr *MI, int OpNum, raw_ostream &O);
- void printSOImm2PartOperand(const MachineInstr *MI, int OpNum,
- raw_ostream &O);
- void printSORegOperand(const MachineInstr *MI, int OpNum,
- raw_ostream &O);
- void printAddrMode2Operand(const MachineInstr *MI, int OpNum,
- raw_ostream &O);
- void printAddrMode2OffsetOperand(const MachineInstr *MI, int OpNum,
- raw_ostream &O);
- void printAddrMode3Operand(const MachineInstr *MI, int OpNum,
- raw_ostream &O);
- void printAddrMode3OffsetOperand(const MachineInstr *MI, int OpNum,
- raw_ostream &O);
- void printAddrMode4Operand(const MachineInstr *MI, int OpNum,raw_ostream &O,
- const char *Modifier = 0);
- void printAddrMode5Operand(const MachineInstr *MI, int OpNum,raw_ostream &O,
- const char *Modifier = 0);
- void printAddrMode6Operand(const MachineInstr *MI, int OpNum,
- raw_ostream &O);
- void printAddrMode6OffsetOperand(const MachineInstr *MI, int OpNum,
- raw_ostream &O);
- void printAddrModePCOperand(const MachineInstr *MI, int OpNum,
- raw_ostream &O,
- const char *Modifier = 0);
- void printBitfieldInvMaskImmOperand(const MachineInstr *MI, int OpNum,
- raw_ostream &O);
- void printMemBOption(const MachineInstr *MI, int OpNum,
- raw_ostream &O);
- void printShiftImmOperand(const MachineInstr *MI, int OpNum,
- raw_ostream &O);
-
- void printThumbS4ImmOperand(const MachineInstr *MI, int OpNum,
- raw_ostream &O);
- void printThumbITMask(const MachineInstr *MI, int OpNum, raw_ostream &O);
- void printThumbAddrModeRROperand(const MachineInstr *MI, int OpNum,
- raw_ostream &O);
- void printThumbAddrModeRI5Operand(const MachineInstr *MI, int OpNum,
- raw_ostream &O,
- unsigned Scale);
- void printThumbAddrModeS1Operand(const MachineInstr *MI, int OpNum,
- raw_ostream &O);
- void printThumbAddrModeS2Operand(const MachineInstr *MI, int OpNum,
- raw_ostream &O);
- void printThumbAddrModeS4Operand(const MachineInstr *MI, int OpNum,
- raw_ostream &O);
- void printThumbAddrModeSPOperand(const MachineInstr *MI, int OpNum,
- raw_ostream &O);
-
- void printT2SOOperand(const MachineInstr *MI, int OpNum, raw_ostream &O);
- void printT2AddrModeImm12Operand(const MachineInstr *MI, int OpNum,
- raw_ostream &O);
- void printT2AddrModeImm8Operand(const MachineInstr *MI, int OpNum,
- raw_ostream &O);
- void printT2AddrModeImm8s4Operand(const MachineInstr *MI, int OpNum,
- raw_ostream &O);
- void printT2AddrModeImm8OffsetOperand(const MachineInstr *MI, int OpNum,
- raw_ostream &O);
- void printT2AddrModeImm8s4OffsetOperand(const MachineInstr *MI, int OpNum,
- raw_ostream &O) {}
- void printT2AddrModeSoRegOperand(const MachineInstr *MI, int OpNum,
- raw_ostream &O);
-
- void printCPSOptionOperand(const MachineInstr *MI, int OpNum,
- raw_ostream &O) {}
- void printMSRMaskOperand(const MachineInstr *MI, int OpNum,
- raw_ostream &O) {}
- void printNegZeroOperand(const MachineInstr *MI, int OpNum,
- raw_ostream &O) {}
- void printPredicateOperand(const MachineInstr *MI, int OpNum,
- raw_ostream &O);
- void printMandatoryPredicateOperand(const MachineInstr *MI, int OpNum,
- raw_ostream &O);
- void printSBitModifierOperand(const MachineInstr *MI, int OpNum,
- raw_ostream &O);
- void printPCLabel(const MachineInstr *MI, int OpNum,
- raw_ostream &O);
- void printRegisterList(const MachineInstr *MI, int OpNum,
- raw_ostream &O);
- void printCPInstOperand(const MachineInstr *MI, int OpNum,
- raw_ostream &O,
- const char *Modifier);
- void printJTBlockOperand(const MachineInstr *MI, int OpNum,
- raw_ostream &O);
- void printJT2BlockOperand(const MachineInstr *MI, int OpNum,
- raw_ostream &O);
- void printTBAddrMode(const MachineInstr *MI, int OpNum,
- raw_ostream &O);
- void printNoHashImmediate(const MachineInstr *MI, int OpNum,
- raw_ostream &O);
- void printVFPf32ImmOperand(const MachineInstr *MI, int OpNum,
- raw_ostream &O);
- void printVFPf64ImmOperand(const MachineInstr *MI, int OpNum,
- raw_ostream &O);
- void printNEONModImmOperand(const MachineInstr *MI, int OpNum,
- raw_ostream &O);
virtual bool PrintAsmOperand(const MachineInstr *MI, unsigned OpNum,
unsigned AsmVariant, const char *ExtraCode,
unsigned AsmVariant,
const char *ExtraCode, raw_ostream &O);
- void printInstruction(const MachineInstr *MI, raw_ostream &O); // autogen
- static const char *getRegisterName(unsigned RegNo);
-
+ void EmitJumpTable(const MachineInstr *MI);
+ void EmitJump2Table(const MachineInstr *MI);
virtual void EmitInstruction(const MachineInstr *MI);
bool runOnMachineFunction(MachineFunction &F);
void EmitStartOfAsmFile(Module &M);
void EmitEndOfAsmFile(Module &M);
+ private:
+ // Helpers for EmitStartOfAsmFile() and EmitEndOfAsmFile()
+ void emitAttributes();
+
+ // Helper for ELF .o only
+ void emitARMAttributeSection();
+
+ public:
+ void PrintDebugValueComment(const MachineInstr *MI, raw_ostream &OS);
+
MachineLocation getDebugValueLocation(const MachineInstr *MI) const {
MachineLocation Location;
assert (MI->getNumOperands() == 4 && "Invalid no. of machine operands!");
};
} // end of anonymous namespace
-#include "ARMGenAsmWriter.inc"
-
void ARMAsmPrinter::EmitFunctionEntryLabel() {
if (AFI->isThumbFunction()) {
OutStreamer.EmitRawText(StringRef("\t.code\t16"));
OutStreamer.EmitLabel(CurrentFnSym);
}
-/// runOnMachineFunction - This uses the printInstruction()
+/// runOnMachineFunction - This uses the EmitInstruction()
/// method to print assembly for each instruction.
///
bool ARMAsmPrinter::runOnMachineFunction(MachineFunction &MF) {
case MachineOperand::MO_Register: {
unsigned Reg = MO.getReg();
assert(TargetRegisterInfo::isPhysicalRegister(Reg));
- if (Modifier && strcmp(Modifier, "lane") == 0) {
- unsigned RegNum = getARMRegisterNumbering(Reg);
- unsigned DReg =
- TM.getRegisterInfo()->getMatchingSuperReg(Reg,
- RegNum & 1 ? ARM::ssub_1 : ARM::ssub_0, &ARM::DPR_VFP2RegClass);
- O << getRegisterName(DReg) << '[' << (RegNum & 1) << ']';
- } else {
- assert(!MO.getSubReg() && "Subregs should be eliminated!");
- O << getRegisterName(Reg);
- }
+ assert(!MO.getSubReg() && "Subregs should be eliminated!");
+ O << ARMInstPrinter::getRegisterName(Reg);
break;
}
case MachineOperand::MO_Immediate: {
int64_t Imm = MO.getImm();
O << '#';
if ((Modifier && strcmp(Modifier, "lo16") == 0) ||
- (TF & ARMII::MO_LO16))
+ (TF == ARMII::MO_LO16))
O << ":lower16:";
else if ((Modifier && strcmp(Modifier, "hi16") == 0) ||
- (TF & ARMII::MO_HI16))
+ (TF == ARMII::MO_HI16))
O << ":upper16:";
O << Imm;
break;
O << *MO.getMBB()->getSymbol();
return;
case MachineOperand::MO_GlobalAddress: {
- bool isCallOp = Modifier && !strcmp(Modifier, "call");
const GlobalValue *GV = MO.getGlobal();
-
if ((Modifier && strcmp(Modifier, "lo16") == 0) ||
(TF & ARMII::MO_LO16))
O << ":lower16:";
O << *Mang->getSymbol(GV);
printOffset(MO.getOffset(), O);
-
- if (isCallOp && Subtarget->isTargetELF() &&
- TM.getRelocationModel() == Reloc::PIC_)
+ if (TF == ARMII::MO_PLT)
O << "(PLT)";
break;
}
case MachineOperand::MO_ExternalSymbol: {
- bool isCallOp = Modifier && !strcmp(Modifier, "call");
O << *GetExternalSymbolSymbol(MO.getSymbolName());
-
- if (isCallOp && Subtarget->isTargetELF() &&
- TM.getRelocationModel() == Reloc::PIC_)
+ if (TF == ARMII::MO_PLT)
O << "(PLT)";
break;
}
}
}
-static void printSOImm(raw_ostream &O, int64_t V, bool VerboseAsm,
- const MCAsmInfo *MAI) {
- // Break it up into two parts that make up a shifter immediate.
- V = ARM_AM::getSOImmVal(V);
- assert(V != -1 && "Not a valid so_imm value!");
-
- unsigned Imm = ARM_AM::getSOImmValImm(V);
- unsigned Rot = ARM_AM::getSOImmValRot(V);
-
- // Print low-level immediate formation info, per
- // A5.1.3: "Data-processing operands - Immediate".
- if (Rot) {
- O << "#" << Imm << ", " << Rot;
- // Pretty printed version.
- if (VerboseAsm) {
- O << "\t" << MAI->getCommentString() << ' ';
- O << (int)ARM_AM::rotr32(Imm, Rot);
- }
- } else {
- O << "#" << Imm;
- }
-}
-
-/// printSOImmOperand - SOImm is 4-bit rotate amount in bits 8-11 with 8-bit
-/// immediate in bits 0-7.
-void ARMAsmPrinter::printSOImmOperand(const MachineInstr *MI, int OpNum,
- raw_ostream &O) {
- const MachineOperand &MO = MI->getOperand(OpNum);
- assert(MO.isImm() && "Not a valid so_imm value!");
- printSOImm(O, MO.getImm(), isVerbose(), MAI);
-}
-
-/// printSOImm2PartOperand - SOImm is broken into two pieces using a 'mov'
-/// followed by an 'orr' to materialize.
-void ARMAsmPrinter::printSOImm2PartOperand(const MachineInstr *MI, int OpNum,
- raw_ostream &O) {
- const MachineOperand &MO = MI->getOperand(OpNum);
- assert(MO.isImm() && "Not a valid so_imm value!");
- unsigned V1 = ARM_AM::getSOImmTwoPartFirst(MO.getImm());
- unsigned V2 = ARM_AM::getSOImmTwoPartSecond(MO.getImm());
- printSOImm(O, V1, isVerbose(), MAI);
- O << "\n\torr";
- printPredicateOperand(MI, 2, O);
- O << "\t";
- printOperand(MI, 0, O);
- O << ", ";
- printOperand(MI, 0, O);
- O << ", ";
- printSOImm(O, V2, isVerbose(), MAI);
-}
-
-// so_reg is a 4-operand unit corresponding to register forms of the A5.1
-// "Addressing Mode 1 - Data-processing operands" forms. This includes:
-// REG 0 0 - e.g. R5
-// REG REG 0,SH_OPC - e.g. R5, ROR R3
-// REG 0 IMM,SH_OPC - e.g. R5, LSL #3
-void ARMAsmPrinter::printSORegOperand(const MachineInstr *MI, int Op,
- raw_ostream &O) {
- const MachineOperand &MO1 = MI->getOperand(Op);
- const MachineOperand &MO2 = MI->getOperand(Op+1);
- const MachineOperand &MO3 = MI->getOperand(Op+2);
-
- O << getRegisterName(MO1.getReg());
-
- // Print the shift opc.
- ARM_AM::ShiftOpc ShOpc = ARM_AM::getSORegShOp(MO3.getImm());
- O << ", " << ARM_AM::getShiftOpcStr(ShOpc);
- if (MO2.getReg()) {
- O << ' ' << getRegisterName(MO2.getReg());
- assert(ARM_AM::getSORegOffset(MO3.getImm()) == 0);
- } else if (ShOpc != ARM_AM::rrx) {
- O << " #" << ARM_AM::getSORegOffset(MO3.getImm());
- }
-}
-
-void ARMAsmPrinter::printAddrMode2Operand(const MachineInstr *MI, int Op,
- raw_ostream &O) {
- const MachineOperand &MO1 = MI->getOperand(Op);
- const MachineOperand &MO2 = MI->getOperand(Op+1);
- const MachineOperand &MO3 = MI->getOperand(Op+2);
-
- if (!MO1.isReg()) { // FIXME: This is for CP entries, but isn't right.
- printOperand(MI, Op, O);
- return;
- }
-
- O << "[" << getRegisterName(MO1.getReg());
-
- if (!MO2.getReg()) {
- if (ARM_AM::getAM2Offset(MO3.getImm())) // Don't print +0.
- O << ", #"
- << ARM_AM::getAddrOpcStr(ARM_AM::getAM2Op(MO3.getImm()))
- << ARM_AM::getAM2Offset(MO3.getImm());
- O << "]";
- return;
- }
-
- O << ", "
- << ARM_AM::getAddrOpcStr(ARM_AM::getAM2Op(MO3.getImm()))
- << getRegisterName(MO2.getReg());
-
- if (unsigned ShImm = ARM_AM::getAM2Offset(MO3.getImm()))
- O << ", "
- << ARM_AM::getShiftOpcStr(ARM_AM::getAM2ShiftOpc(MO3.getImm()))
- << " #" << ShImm;
- O << "]";
-}
-
-void ARMAsmPrinter::printAddrMode2OffsetOperand(const MachineInstr *MI, int Op,
- raw_ostream &O) {
- const MachineOperand &MO1 = MI->getOperand(Op);
- const MachineOperand &MO2 = MI->getOperand(Op+1);
-
- if (!MO1.getReg()) {
- unsigned ImmOffs = ARM_AM::getAM2Offset(MO2.getImm());
- O << "#"
- << ARM_AM::getAddrOpcStr(ARM_AM::getAM2Op(MO2.getImm()))
- << ImmOffs;
- return;
- }
-
- O << ARM_AM::getAddrOpcStr(ARM_AM::getAM2Op(MO2.getImm()))
- << getRegisterName(MO1.getReg());
-
- if (unsigned ShImm = ARM_AM::getAM2Offset(MO2.getImm()))
- O << ", "
- << ARM_AM::getShiftOpcStr(ARM_AM::getAM2ShiftOpc(MO2.getImm()))
- << " #" << ShImm;
-}
-
-void ARMAsmPrinter::printAddrMode3Operand(const MachineInstr *MI, int Op,
- raw_ostream &O) {
- const MachineOperand &MO1 = MI->getOperand(Op);
- const MachineOperand &MO2 = MI->getOperand(Op+1);
- const MachineOperand &MO3 = MI->getOperand(Op+2);
-
- assert(TargetRegisterInfo::isPhysicalRegister(MO1.getReg()));
- O << "[" << getRegisterName(MO1.getReg());
-
- if (MO2.getReg()) {
- O << ", "
- << (char)ARM_AM::getAM3Op(MO3.getImm())
- << getRegisterName(MO2.getReg())
- << "]";
- return;
- }
-
- if (unsigned ImmOffs = ARM_AM::getAM3Offset(MO3.getImm()))
- O << ", #"
- << ARM_AM::getAddrOpcStr(ARM_AM::getAM3Op(MO3.getImm()))
- << ImmOffs;
- O << "]";
-}
-
-void ARMAsmPrinter::printAddrMode3OffsetOperand(const MachineInstr *MI, int Op,
- raw_ostream &O){
- const MachineOperand &MO1 = MI->getOperand(Op);
- const MachineOperand &MO2 = MI->getOperand(Op+1);
-
- if (MO1.getReg()) {
- O << (char)ARM_AM::getAM3Op(MO2.getImm())
- << getRegisterName(MO1.getReg());
- return;
- }
-
- unsigned ImmOffs = ARM_AM::getAM3Offset(MO2.getImm());
- O << "#"
- << ARM_AM::getAddrOpcStr(ARM_AM::getAM3Op(MO2.getImm()))
- << ImmOffs;
-}
-
-void ARMAsmPrinter::printAddrMode4Operand(const MachineInstr *MI, int Op,
- raw_ostream &O,
- const char *Modifier) {
- const MachineOperand &MO2 = MI->getOperand(Op+1);
- ARM_AM::AMSubMode Mode = ARM_AM::getAM4SubMode(MO2.getImm());
- if (Modifier && strcmp(Modifier, "submode") == 0) {
- O << ARM_AM::getAMSubModeStr(Mode);
- } else if (Modifier && strcmp(Modifier, "wide") == 0) {
- ARM_AM::AMSubMode Mode = ARM_AM::getAM4SubMode(MO2.getImm());
- if (Mode == ARM_AM::ia)
- O << ".w";
- } else {
- printOperand(MI, Op, O);
- }
-}
-
-void ARMAsmPrinter::printAddrMode5Operand(const MachineInstr *MI, int Op,
- raw_ostream &O,
- const char *Modifier) {
- const MachineOperand &MO1 = MI->getOperand(Op);
- const MachineOperand &MO2 = MI->getOperand(Op+1);
-
- if (!MO1.isReg()) { // FIXME: This is for CP entries, but isn't right.
- printOperand(MI, Op, O);
- return;
- }
-
- assert(TargetRegisterInfo::isPhysicalRegister(MO1.getReg()));
-
- O << "[" << getRegisterName(MO1.getReg());
-
- if (unsigned ImmOffs = ARM_AM::getAM5Offset(MO2.getImm())) {
- O << ", #"
- << ARM_AM::getAddrOpcStr(ARM_AM::getAM5Op(MO2.getImm()))
- << ImmOffs*4;
- }
- O << "]";
-}
-
-void ARMAsmPrinter::printAddrMode6Operand(const MachineInstr *MI, int Op,
- raw_ostream &O) {
- const MachineOperand &MO1 = MI->getOperand(Op);
- const MachineOperand &MO2 = MI->getOperand(Op+1);
-
- O << "[" << getRegisterName(MO1.getReg());
- if (MO2.getImm()) {
- // FIXME: Both darwin as and GNU as violate ARM docs here.
- O << ", :" << (MO2.getImm() << 3);
- }
- O << "]";
-}
-
-void ARMAsmPrinter::printAddrMode6OffsetOperand(const MachineInstr *MI, int Op,
- raw_ostream &O){
- const MachineOperand &MO = MI->getOperand(Op);
- if (MO.getReg() == 0)
- O << "!";
- else
- O << ", " << getRegisterName(MO.getReg());
-}
-
-void ARMAsmPrinter::printAddrModePCOperand(const MachineInstr *MI, int Op,
- raw_ostream &O,
- const char *Modifier) {
- if (Modifier && strcmp(Modifier, "label") == 0) {
- printPCLabel(MI, Op+1, O);
- return;
- }
-
- const MachineOperand &MO1 = MI->getOperand(Op);
- assert(TargetRegisterInfo::isPhysicalRegister(MO1.getReg()));
- O << "[pc, " << getRegisterName(MO1.getReg()) << "]";
-}
-
-void
-ARMAsmPrinter::printBitfieldInvMaskImmOperand(const MachineInstr *MI, int Op,
- raw_ostream &O) {
- const MachineOperand &MO = MI->getOperand(Op);
- uint32_t v = ~MO.getImm();
- int32_t lsb = CountTrailingZeros_32(v);
- int32_t width = (32 - CountLeadingZeros_32 (v)) - lsb;
- assert(MO.isImm() && "Not a valid bf_inv_mask_imm value!");
- O << "#" << lsb << ", #" << width;
-}
-
-void
-ARMAsmPrinter::printMemBOption(const MachineInstr *MI, int OpNum,
- raw_ostream &O) {
- unsigned val = MI->getOperand(OpNum).getImm();
- O << ARM_MB::MemBOptToString(val);
-}
-
-void ARMAsmPrinter::printShiftImmOperand(const MachineInstr *MI, int OpNum,
- raw_ostream &O) {
- unsigned ShiftOp = MI->getOperand(OpNum).getImm();
- ARM_AM::ShiftOpc Opc = ARM_AM::getSORegShOp(ShiftOp);
- switch (Opc) {
- case ARM_AM::no_shift:
- return;
- case ARM_AM::lsl:
- O << ", lsl #";
- break;
- case ARM_AM::asr:
- O << ", asr #";
- break;
- default:
- assert(0 && "unexpected shift opcode for shift immediate operand");
- }
- O << ARM_AM::getSORegOffset(ShiftOp);
-}
-
-//===--------------------------------------------------------------------===//
-
-void ARMAsmPrinter::printThumbS4ImmOperand(const MachineInstr *MI, int Op,
- raw_ostream &O) {
- O << "#" << MI->getOperand(Op).getImm() * 4;
-}
-
-void
-ARMAsmPrinter::printThumbITMask(const MachineInstr *MI, int Op,
- raw_ostream &O) {
- // (3 - the number of trailing zeros) is the number of then / else.
- unsigned Mask = MI->getOperand(Op).getImm();
- unsigned CondBit0 = Mask >> 4 & 1;
- unsigned NumTZ = CountTrailingZeros_32(Mask);
- assert(NumTZ <= 3 && "Invalid IT mask!");
- for (unsigned Pos = 3, e = NumTZ; Pos > e; --Pos) {
- bool T = ((Mask >> Pos) & 1) == CondBit0;
- if (T)
- O << 't';
- else
- O << 'e';
- }
-}
-
-void
-ARMAsmPrinter::printThumbAddrModeRROperand(const MachineInstr *MI, int Op,
- raw_ostream &O) {
- const MachineOperand &MO1 = MI->getOperand(Op);
- const MachineOperand &MO2 = MI->getOperand(Op+1);
- O << "[" << getRegisterName(MO1.getReg());
- O << ", " << getRegisterName(MO2.getReg()) << "]";
-}
-
-void
-ARMAsmPrinter::printThumbAddrModeRI5Operand(const MachineInstr *MI, int Op,
- raw_ostream &O,
- unsigned Scale) {
- const MachineOperand &MO1 = MI->getOperand(Op);
- const MachineOperand &MO2 = MI->getOperand(Op+1);
- const MachineOperand &MO3 = MI->getOperand(Op+2);
-
- if (!MO1.isReg()) { // FIXME: This is for CP entries, but isn't right.
- printOperand(MI, Op, O);
- return;
- }
-
- O << "[" << getRegisterName(MO1.getReg());
- if (MO3.getReg())
- O << ", " << getRegisterName(MO3.getReg());
- else if (unsigned ImmOffs = MO2.getImm())
- O << ", #" << ImmOffs * Scale;
- O << "]";
-}
-
-void
-ARMAsmPrinter::printThumbAddrModeS1Operand(const MachineInstr *MI, int Op,
- raw_ostream &O) {
- printThumbAddrModeRI5Operand(MI, Op, O, 1);
-}
-void
-ARMAsmPrinter::printThumbAddrModeS2Operand(const MachineInstr *MI, int Op,
- raw_ostream &O) {
- printThumbAddrModeRI5Operand(MI, Op, O, 2);
-}
-void
-ARMAsmPrinter::printThumbAddrModeS4Operand(const MachineInstr *MI, int Op,
- raw_ostream &O) {
- printThumbAddrModeRI5Operand(MI, Op, O, 4);
-}
-
-void ARMAsmPrinter::printThumbAddrModeSPOperand(const MachineInstr *MI,int Op,
- raw_ostream &O) {
- const MachineOperand &MO1 = MI->getOperand(Op);
- const MachineOperand &MO2 = MI->getOperand(Op+1);
- O << "[" << getRegisterName(MO1.getReg());
- if (unsigned ImmOffs = MO2.getImm())
- O << ", #" << ImmOffs*4;
- O << "]";
-}
-
//===--------------------------------------------------------------------===//
-// Constant shifts t2_so_reg is a 2-operand unit corresponding to the Thumb2
-// register with shift forms.
-// REG 0 0 - e.g. R5
-// REG IMM, SH_OPC - e.g. R5, LSL #3
-void ARMAsmPrinter::printT2SOOperand(const MachineInstr *MI, int OpNum,
- raw_ostream &O) {
- const MachineOperand &MO1 = MI->getOperand(OpNum);
- const MachineOperand &MO2 = MI->getOperand(OpNum+1);
-
- unsigned Reg = MO1.getReg();
- assert(TargetRegisterInfo::isPhysicalRegister(Reg));
- O << getRegisterName(Reg);
-
- // Print the shift opc.
- assert(MO2.isImm() && "Not a valid t2_so_reg value!");
- ARM_AM::ShiftOpc ShOpc = ARM_AM::getSORegShOp(MO2.getImm());
- O << ", " << ARM_AM::getShiftOpcStr(ShOpc);
- if (ShOpc != ARM_AM::rrx)
- O << " #" << ARM_AM::getSORegOffset(MO2.getImm());
-}
-
-void ARMAsmPrinter::printT2AddrModeImm12Operand(const MachineInstr *MI,
- int OpNum,
- raw_ostream &O) {
- const MachineOperand &MO1 = MI->getOperand(OpNum);
- const MachineOperand &MO2 = MI->getOperand(OpNum+1);
-
- O << "[" << getRegisterName(MO1.getReg());
-
- unsigned OffImm = MO2.getImm();
- if (OffImm) // Don't print +0.
- O << ", #" << OffImm;
- O << "]";
-}
-
-void ARMAsmPrinter::printT2AddrModeImm8Operand(const MachineInstr *MI,
- int OpNum,
- raw_ostream &O) {
- const MachineOperand &MO1 = MI->getOperand(OpNum);
- const MachineOperand &MO2 = MI->getOperand(OpNum+1);
-
- O << "[" << getRegisterName(MO1.getReg());
-
- int32_t OffImm = (int32_t)MO2.getImm();
- // Don't print +0.
- if (OffImm < 0)
- O << ", #-" << -OffImm;
- else if (OffImm > 0)
- O << ", #" << OffImm;
- O << "]";
-}
-
-void ARMAsmPrinter::printT2AddrModeImm8s4Operand(const MachineInstr *MI,
- int OpNum,
- raw_ostream &O) {
- const MachineOperand &MO1 = MI->getOperand(OpNum);
- const MachineOperand &MO2 = MI->getOperand(OpNum+1);
-
- O << "[" << getRegisterName(MO1.getReg());
-
- int32_t OffImm = (int32_t)MO2.getImm() / 4;
- // Don't print +0.
- if (OffImm < 0)
- O << ", #-" << -OffImm * 4;
- else if (OffImm > 0)
- O << ", #" << OffImm * 4;
- O << "]";
-}
-
-void ARMAsmPrinter::printT2AddrModeImm8OffsetOperand(const MachineInstr *MI,
- int OpNum,
- raw_ostream &O) {
- const MachineOperand &MO1 = MI->getOperand(OpNum);
- int32_t OffImm = (int32_t)MO1.getImm();
- // Don't print +0.
- if (OffImm < 0)
- O << "#-" << -OffImm;
- else if (OffImm > 0)
- O << "#" << OffImm;
-}
-
-void ARMAsmPrinter::printT2AddrModeSoRegOperand(const MachineInstr *MI,
- int OpNum,
- raw_ostream &O) {
- const MachineOperand &MO1 = MI->getOperand(OpNum);
- const MachineOperand &MO2 = MI->getOperand(OpNum+1);
- const MachineOperand &MO3 = MI->getOperand(OpNum+2);
-
- O << "[" << getRegisterName(MO1.getReg());
-
- assert(MO2.getReg() && "Invalid so_reg load / store address!");
- O << ", " << getRegisterName(MO2.getReg());
-
- unsigned ShAmt = MO3.getImm();
- if (ShAmt) {
- assert(ShAmt <= 3 && "Not a valid Thumb2 addressing mode!");
- O << ", lsl #" << ShAmt;
- }
- O << "]";
-}
-
-
-//===--------------------------------------------------------------------===//
-
-void ARMAsmPrinter::printPredicateOperand(const MachineInstr *MI, int OpNum,
- raw_ostream &O) {
- ARMCC::CondCodes CC = (ARMCC::CondCodes)MI->getOperand(OpNum).getImm();
- if (CC != ARMCC::AL)
- O << ARMCondCodeToString(CC);
-}
-
-void ARMAsmPrinter::printMandatoryPredicateOperand(const MachineInstr *MI,
- int OpNum,
- raw_ostream &O) {
- ARMCC::CondCodes CC = (ARMCC::CondCodes)MI->getOperand(OpNum).getImm();
- O << ARMCondCodeToString(CC);
-}
-
-void ARMAsmPrinter::printSBitModifierOperand(const MachineInstr *MI, int OpNum,
- raw_ostream &O){
- unsigned Reg = MI->getOperand(OpNum).getReg();
- if (Reg) {
- assert(Reg == ARM::CPSR && "Expect ARM CPSR register!");
- O << 's';
- }
-}
-
-void ARMAsmPrinter::printPCLabel(const MachineInstr *MI, int OpNum,
- raw_ostream &O) {
- int Id = (int)MI->getOperand(OpNum).getImm();
- O << MAI->getPrivateGlobalPrefix()
- << "PC" << getFunctionNumber() << "_" << Id;
-}
-
-void ARMAsmPrinter::printRegisterList(const MachineInstr *MI, int OpNum,
- raw_ostream &O) {
- O << "{";
- for (unsigned i = OpNum, e = MI->getNumOperands(); i != e; ++i) {
- if (MI->getOperand(i).isImplicit())
- continue;
- if ((int)i != OpNum) O << ", ";
- printOperand(MI, i, O);
- }
- O << "}";
-}
-
-void ARMAsmPrinter::printCPInstOperand(const MachineInstr *MI, int OpNum,
- raw_ostream &O, const char *Modifier) {
- assert(Modifier && "This operand only works with a modifier!");
- // There are two aspects to a CONSTANTPOOL_ENTRY operand, the label and the
- // data itself.
- if (!strcmp(Modifier, "label")) {
- unsigned ID = MI->getOperand(OpNum).getImm();
- OutStreamer.EmitLabel(GetCPISymbol(ID));
- } else {
- assert(!strcmp(Modifier, "cpentry") && "Unknown modifier for CPE");
- unsigned CPI = MI->getOperand(OpNum).getIndex();
-
- const MachineConstantPoolEntry &MCPE = MCP->getConstants()[CPI];
-
- if (MCPE.isMachineConstantPoolEntry()) {
- EmitMachineConstantPoolValue(MCPE.Val.MachineCPVal);
- } else {
- EmitGlobalConstant(MCPE.Val.ConstVal);
- }
- }
-}
-
MCSymbol *ARMAsmPrinter::
GetARMSetPICJumpTableLabel2(unsigned uid, unsigned uid2,
const MachineBasicBlock *MBB) const {
return OutContext.GetOrCreateSymbol(Name.str());
}
-void ARMAsmPrinter::printJTBlockOperand(const MachineInstr *MI, int OpNum,
- raw_ostream &O) {
- assert(!Subtarget->isThumb2() && "Thumb2 should use double-jump jumptables!");
-
- const MachineOperand &MO1 = MI->getOperand(OpNum);
- const MachineOperand &MO2 = MI->getOperand(OpNum+1); // Unique Id
-
- unsigned JTI = MO1.getIndex();
- MCSymbol *JTISymbol = GetARMJTIPICJumpTableLabel2(JTI, MO2.getImm());
- // Can't use EmitLabel until instprinter happens, label comes out in the wrong
- // order.
- O << "\n" << *JTISymbol << ":\n";
-
- const char *JTEntryDirective = MAI->getData32bitsDirective();
-
- const MachineJumpTableInfo *MJTI = MF->getJumpTableInfo();
- const std::vector<MachineJumpTableEntry> &JT = MJTI->getJumpTables();
- const std::vector<MachineBasicBlock*> &JTBBs = JT[JTI].MBBs;
- bool UseSet= MAI->hasSetDirective() && TM.getRelocationModel() == Reloc::PIC_;
- SmallPtrSet<MachineBasicBlock*, 8> JTSets;
- for (unsigned i = 0, e = JTBBs.size(); i != e; ++i) {
- MachineBasicBlock *MBB = JTBBs[i];
- bool isNew = JTSets.insert(MBB);
-
- if (UseSet && isNew) {
- O << "\t.set\t"
- << *GetARMSetPICJumpTableLabel2(JTI, MO2.getImm(), MBB) << ','
- << *MBB->getSymbol() << '-' << *JTISymbol << '\n';
- }
-
- O << JTEntryDirective << ' ';
- if (UseSet)
- O << *GetARMSetPICJumpTableLabel2(JTI, MO2.getImm(), MBB);
- else if (TM.getRelocationModel() == Reloc::PIC_)
- O << *MBB->getSymbol() << '-' << *JTISymbol;
- else
- O << *MBB->getSymbol();
-
- if (i != e-1)
- O << '\n';
- }
-}
-
-void ARMAsmPrinter::printJT2BlockOperand(const MachineInstr *MI, int OpNum,
- raw_ostream &O) {
- const MachineOperand &MO1 = MI->getOperand(OpNum);
- const MachineOperand &MO2 = MI->getOperand(OpNum+1); // Unique Id
- unsigned JTI = MO1.getIndex();
-
- MCSymbol *JTISymbol = GetARMJTIPICJumpTableLabel2(JTI, MO2.getImm());
-
- // Can't use EmitLabel until instprinter happens, label comes out in the wrong
- // order.
- O << "\n" << *JTISymbol << ":\n";
-
- const MachineJumpTableInfo *MJTI = MF->getJumpTableInfo();
- const std::vector<MachineJumpTableEntry> &JT = MJTI->getJumpTables();
- const std::vector<MachineBasicBlock*> &JTBBs = JT[JTI].MBBs;
- bool ByteOffset = false, HalfWordOffset = false;
- if (MI->getOpcode() == ARM::t2TBB)
- ByteOffset = true;
- else if (MI->getOpcode() == ARM::t2TBH)
- HalfWordOffset = true;
-
- for (unsigned i = 0, e = JTBBs.size(); i != e; ++i) {
- MachineBasicBlock *MBB = JTBBs[i];
- if (ByteOffset)
- O << MAI->getData8bitsDirective();
- else if (HalfWordOffset)
- O << MAI->getData16bitsDirective();
-
- if (ByteOffset || HalfWordOffset)
- O << '(' << *MBB->getSymbol() << "-" << *JTISymbol << ")/2";
- else
- O << "\tb.w " << *MBB->getSymbol();
-
- if (i != e-1)
- O << '\n';
- }
-}
-
-void ARMAsmPrinter::printTBAddrMode(const MachineInstr *MI, int OpNum,
- raw_ostream &O) {
- O << "[pc, " << getRegisterName(MI->getOperand(OpNum).getReg());
- if (MI->getOpcode() == ARM::t2TBH)
- O << ", lsl #1";
- O << ']';
-}
-
-void ARMAsmPrinter::printNoHashImmediate(const MachineInstr *MI, int OpNum,
- raw_ostream &O) {
- O << MI->getOperand(OpNum).getImm();
-}
-
-void ARMAsmPrinter::printVFPf32ImmOperand(const MachineInstr *MI, int OpNum,
- raw_ostream &O) {
- const ConstantFP *FP = MI->getOperand(OpNum).getFPImm();
- O << '#' << FP->getValueAPF().convertToFloat();
- if (isVerbose()) {
- O << "\t\t" << MAI->getCommentString() << ' ';
- WriteAsOperand(O, FP, /*PrintType=*/false);
- }
-}
-
-void ARMAsmPrinter::printVFPf64ImmOperand(const MachineInstr *MI, int OpNum,
- raw_ostream &O) {
- const ConstantFP *FP = MI->getOperand(OpNum).getFPImm();
- O << '#' << FP->getValueAPF().convertToDouble();
- if (isVerbose()) {
- O << "\t\t" << MAI->getCommentString() << ' ';
- WriteAsOperand(O, FP, /*PrintType=*/false);
- }
-}
-
-void ARMAsmPrinter::printNEONModImmOperand(const MachineInstr *MI, int OpNum,
- raw_ostream &O) {
- unsigned EncodedImm = MI->getOperand(OpNum).getImm();
- unsigned EltBits;
- uint64_t Val = ARM_AM::decodeNEONModImm(EncodedImm, EltBits);
- O << "#0x" << utohexstr(Val);
-}
-
bool ARMAsmPrinter::PrintAsmOperand(const MachineInstr *MI, unsigned OpNum,
unsigned AsmVariant, const char *ExtraCode,
raw_ostream &O) {
default: return true; // Unknown modifier.
case 'a': // Print as a memory address.
if (MI->getOperand(OpNum).isReg()) {
- O << "[" << getRegisterName(MI->getOperand(OpNum).getReg()) << "]";
+ O << "["
+ << ARMInstPrinter::getRegisterName(MI->getOperand(OpNum).getReg())
+ << "]";
return false;
}
// Fallthrough
case 'c': // Don't print "#" before an immediate operand.
if (!MI->getOperand(OpNum).isImm())
return true;
- printNoHashImmediate(MI, OpNum, O);
+ O << MI->getOperand(OpNum).getImm();
return false;
case 'P': // Print a VFP double precision register.
case 'q': // Print a NEON quad precision register.
const MachineOperand &MO = MI->getOperand(OpNum);
assert(MO.isReg() && "unexpected inline asm memory operand");
- O << "[" << getRegisterName(MO.getReg()) << "]";
+ O << "[" << ARMInstPrinter::getRegisterName(MO.getReg()) << "]";
return false;
}
-void ARMAsmPrinter::EmitInstruction(const MachineInstr *MI) {
- if (EnableMCInst) {
- printInstructionThroughMCStreamer(MI);
- return;
- }
-
- if (MI->getOpcode() == ARM::CONSTPOOL_ENTRY)
- EmitAlignment(2);
-
- SmallString<128> Str;
- raw_svector_ostream OS(Str);
- if (MI->getOpcode() == ARM::DBG_VALUE) {
- unsigned NOps = MI->getNumOperands();
- assert(NOps==4);
- OS << '\t' << MAI->getCommentString() << "DEBUG_VALUE: ";
- // cast away const; DIetc do not take const operands for some reason.
- DIVariable V(const_cast<MDNode *>(MI->getOperand(NOps-1).getMetadata()));
- OS << V.getName();
- OS << " <- ";
- // Frame address. Currently handles register +- offset only.
- assert(MI->getOperand(0).isReg() && MI->getOperand(1).isImm());
- OS << '['; printOperand(MI, 0, OS); OS << '+'; printOperand(MI, 1, OS);
- OS << ']';
- OS << "+";
- printOperand(MI, NOps-2, OS);
- } else if (MI->getOpcode() == ARM::MOVs) {
- // FIXME: Thumb variants?
- const MachineOperand &Dst = MI->getOperand(0);
- const MachineOperand &MO1 = MI->getOperand(1);
- const MachineOperand &MO2 = MI->getOperand(2);
- const MachineOperand &MO3 = MI->getOperand(3);
-
- OS << '\t' << ARM_AM::getShiftOpcStr(ARM_AM::getSORegShOp(MO3.getImm()));
- printSBitModifierOperand(MI, 6, OS);
- printPredicateOperand(MI, 4, OS);
-
- OS << '\t' << getRegisterName(Dst.getReg())
- << ", " << getRegisterName(MO1.getReg());
-
- if (ARM_AM::getSORegShOp(MO3.getImm()) != ARM_AM::rrx) {
- OS << ", ";
-
- if (MO2.getReg()) {
- OS << getRegisterName(MO2.getReg());
- assert(ARM_AM::getSORegOffset(MO3.getImm()) == 0);
- } else {
- OS << "#" << ARM_AM::getSORegOffset(MO3.getImm());
- }
- }
- } else
- // A8.6.123 PUSH
- if ((MI->getOpcode() == ARM::STM_UPD || MI->getOpcode() == ARM::t2STM_UPD) &&
- MI->getOperand(0).getReg() == ARM::SP &&
- ARM_AM::getAM4SubMode(MI->getOperand(2).getImm()) == ARM_AM::db) {
- OS << '\t' << "push";
- printPredicateOperand(MI, 3, OS);
- OS << '\t';
- printRegisterList(MI, 5, OS);
- } else
- // A8.6.122 POP
- if ((MI->getOpcode() == ARM::LDM_UPD || MI->getOpcode() == ARM::t2LDM_UPD) &&
- MI->getOperand(0).getReg() == ARM::SP &&
- ARM_AM::getAM4SubMode(MI->getOperand(2).getImm()) == ARM_AM::ia) {
- OS << '\t' << "pop";
- printPredicateOperand(MI, 3, OS);
- OS << '\t';
- printRegisterList(MI, 5, OS);
- } else
- // A8.6.355 VPUSH
- if ((MI->getOpcode() == ARM::VSTMS_UPD || MI->getOpcode() ==ARM::VSTMD_UPD) &&
- MI->getOperand(0).getReg() == ARM::SP &&
- ARM_AM::getAM4SubMode(MI->getOperand(2).getImm()) == ARM_AM::db) {
- OS << '\t' << "vpush";
- printPredicateOperand(MI, 3, OS);
- OS << '\t';
- printRegisterList(MI, 5, OS);
- } else
- // A8.6.354 VPOP
- if ((MI->getOpcode() == ARM::VLDMS_UPD || MI->getOpcode() ==ARM::VLDMD_UPD) &&
- MI->getOperand(0).getReg() == ARM::SP &&
- ARM_AM::getAM4SubMode(MI->getOperand(2).getImm()) == ARM_AM::ia) {
- OS << '\t' << "vpop";
- printPredicateOperand(MI, 3, OS);
- OS << '\t';
- printRegisterList(MI, 5, OS);
- } else
- // TRAP and tTRAP need special handling for non-Darwin. The GNU binutils
- // don't (yet) support the 'trap' mnemonic. (Use decimal, not hex, to
- // be consistent with the MC instruction printer.)
- // FIXME: This really should be in AsmPrinter/ARMInstPrinter.cpp, not here.
- // Need a way to ask "isTargetDarwin()" there, first, though.
- if (MI->getOpcode() == ARM::TRAP && !Subtarget->isTargetDarwin()) {
- OS << "\t.long\t3892305662\t\t" << MAI->getCommentString() << "trap";
- } else if (MI->getOpcode() == ARM::tTRAP && !Subtarget->isTargetDarwin()) {
- OS << "\t.short\t57086\t\t\t" << MAI->getCommentString() << " trap";
- } else
- printInstruction(MI, OS);
-
- // Output the instruction to the stream
- OutStreamer.EmitRawText(OS.str());
-
- // Make sure the instruction that follows TBB is 2-byte aligned.
- // FIXME: Constant island pass should insert an "ALIGN" instruction instead.
- if (MI->getOpcode() == ARM::t2TBB)
- EmitAlignment(1);
-}
-
void ARMAsmPrinter::EmitStartOfAsmFile(Module &M) {
if (Subtarget->isTargetDarwin()) {
Reloc::Model RelocM = TM.getRelocationModel();
}
// Use unified assembler syntax.
- OutStreamer.EmitRawText(StringRef("\t.syntax unified"));
+ OutStreamer.EmitAssemblerFlag(MCAF_SyntaxUnified);
// Emit ARM Build Attributes
if (Subtarget->isTargetELF()) {
- // CPU Type
- std::string CPUString = Subtarget->getCPUString();
- if (CPUString != "generic")
- OutStreamer.EmitRawText("\t.cpu " + Twine(CPUString));
-
- // FIXME: Emit FPU type
- if (Subtarget->hasVFP2())
- OutStreamer.EmitRawText("\t.eabi_attribute " +
- Twine(ARMBuildAttrs::VFP_arch) + ", 2");
-
- // Signal various FP modes.
- if (!UnsafeFPMath) {
- OutStreamer.EmitRawText("\t.eabi_attribute " +
- Twine(ARMBuildAttrs::ABI_FP_denormal) + ", 1");
- OutStreamer.EmitRawText("\t.eabi_attribute " +
- Twine(ARMBuildAttrs::ABI_FP_exceptions) + ", 1");
- }
- if (NoInfsFPMath && NoNaNsFPMath)
- OutStreamer.EmitRawText("\t.eabi_attribute " +
- Twine(ARMBuildAttrs::ABI_FP_number_model)+ ", 1");
- else
- OutStreamer.EmitRawText("\t.eabi_attribute " +
- Twine(ARMBuildAttrs::ABI_FP_number_model)+ ", 3");
-
- // 8-bytes alignment stuff.
- OutStreamer.EmitRawText("\t.eabi_attribute " +
- Twine(ARMBuildAttrs::ABI_align8_needed) + ", 1");
- OutStreamer.EmitRawText("\t.eabi_attribute " +
- Twine(ARMBuildAttrs::ABI_align8_preserved) + ", 1");
-
- // Hard float. Use both S and D registers and conform to AAPCS-VFP.
- if (Subtarget->isAAPCS_ABI() && FloatABIType == FloatABI::Hard) {
- OutStreamer.EmitRawText("\t.eabi_attribute " +
- Twine(ARMBuildAttrs::ABI_HardFP_use) + ", 3");
- OutStreamer.EmitRawText("\t.eabi_attribute " +
- Twine(ARMBuildAttrs::ABI_VFP_args) + ", 1");
- }
- // FIXME: Should we signal R9 usage?
+ emitAttributes();
}
}
}
}
+//===----------------------------------------------------------------------===//
+// Helper routines for EmitStartOfAsmFile() and EmitEndOfAsmFile()
+// FIXME:
+// The following seem like one-off assembler flags, but they actually need
+// to appear in the .ARM.attributes section in ELF.
+// Instead of subclassing the MCELFStreamer, we do the work here.
+
+void ARMAsmPrinter::emitAttributes() {
+
+ emitARMAttributeSection();
+
+ AttributeEmitter *AttrEmitter;
+ if (OutStreamer.hasRawTextSupport())
+ AttrEmitter = new AsmAttributeEmitter(OutStreamer);
+ else {
+ MCObjectStreamer &O = static_cast<MCObjectStreamer&>(OutStreamer);
+ AttrEmitter = new ObjectAttributeEmitter(O);
+ }
+
+ AttrEmitter->MaybeSwitchVendor("aeabi");
+
+ std::string CPUString = Subtarget->getCPUString();
+ if (OutStreamer.hasRawTextSupport()) {
+ if (CPUString != "generic")
+ OutStreamer.EmitRawText(StringRef("\t.cpu ") + CPUString);
+ } else {
+ assert(CPUString == "generic" && "Unsupported .cpu attribute for ELF/.o");
+ // FIXME: Why these defaults?
+ AttrEmitter->EmitAttribute(ARMBuildAttrs::CPU_arch, ARMBuildAttrs::v4T);
+ AttrEmitter->EmitAttribute(ARMBuildAttrs::ARM_ISA_use, 1);
+ AttrEmitter->EmitAttribute(ARMBuildAttrs::THUMB_ISA_use, 1);
+ }
+
+ // FIXME: Emit FPU type
+ if (Subtarget->hasVFP2())
+ AttrEmitter->EmitAttribute(ARMBuildAttrs::VFP_arch, 2);
+
+ // Signal various FP modes.
+ if (!UnsafeFPMath) {
+ AttrEmitter->EmitAttribute(ARMBuildAttrs::ABI_FP_denormal, 1);
+ AttrEmitter->EmitAttribute(ARMBuildAttrs::ABI_FP_exceptions, 1);
+ }
+
+ if (NoInfsFPMath && NoNaNsFPMath)
+ AttrEmitter->EmitAttribute(ARMBuildAttrs::ABI_FP_number_model, 1);
+ else
+ AttrEmitter->EmitAttribute(ARMBuildAttrs::ABI_FP_number_model, 3);
+
+ // 8-bytes alignment stuff.
+ AttrEmitter->EmitAttribute(ARMBuildAttrs::ABI_align8_needed, 1);
+ AttrEmitter->EmitAttribute(ARMBuildAttrs::ABI_align8_preserved, 1);
+
+ // Hard float. Use both S and D registers and conform to AAPCS-VFP.
+ if (Subtarget->isAAPCS_ABI() && FloatABIType == FloatABI::Hard) {
+ AttrEmitter->EmitAttribute(ARMBuildAttrs::ABI_HardFP_use, 3);
+ AttrEmitter->EmitAttribute(ARMBuildAttrs::ABI_VFP_args, 1);
+ }
+ // FIXME: Should we signal R9 usage?
+
+ AttrEmitter->EmitAttribute(ARMBuildAttrs::DIV_use, 1);
+
+ AttrEmitter->Finish();
+ delete AttrEmitter;
+}
+
+void ARMAsmPrinter::emitARMAttributeSection() {
+ // <format-version>
+ // [ <section-length> "vendor-name"
+ // [ <file-tag> <size> <attribute>*
+ // | <section-tag> <size> <section-number>* 0 <attribute>*
+ // | <symbol-tag> <size> <symbol-number>* 0 <attribute>*
+ // ]+
+ // ]*
+
+ if (OutStreamer.hasRawTextSupport())
+ return;
+
+ const ARMElfTargetObjectFile &TLOFELF =
+ static_cast<const ARMElfTargetObjectFile &>
+ (getObjFileLowering());
+
+ OutStreamer.SwitchSection(TLOFELF.getAttributesSection());
+
+ // Format version
+ OutStreamer.EmitIntValue(0x41, 1);
+}
+
//===----------------------------------------------------------------------===//
static MCSymbol *getPICLabel(const char *Prefix, unsigned FunctionNumber,
EmitAlignment(1);
}
-void ARMAsmPrinter::printInstructionThroughMCStreamer(const MachineInstr *MI) {
+void ARMAsmPrinter::PrintDebugValueComment(const MachineInstr *MI,
+ raw_ostream &OS) {
+ unsigned NOps = MI->getNumOperands();
+ assert(NOps==4);
+ OS << '\t' << MAI->getCommentString() << "DEBUG_VALUE: ";
+ // cast away const; DIetc do not take const operands for some reason.
+ DIVariable V(const_cast<MDNode *>(MI->getOperand(NOps-1).getMetadata()));
+ OS << V.getName();
+ OS << " <- ";
+ // Frame address. Currently handles register +- offset only.
+ assert(MI->getOperand(0).isReg() && MI->getOperand(1).isImm());
+ OS << '['; printOperand(MI, 0, OS); OS << '+'; printOperand(MI, 1, OS);
+ OS << ']';
+ OS << "+";
+ printOperand(MI, NOps-2, OS);
+}
+
+void ARMAsmPrinter::EmitInstruction(const MachineInstr *MI) {
ARMMCInstLower MCInstLowering(OutContext, *Mang, *this);
switch (MI->getOpcode()) {
case ARM::t2MOVi32imm:
assert(0 && "Should be lowered by thumb2it pass");
default: break;
+ case ARM::DBG_VALUE: {
+ if (isVerbose() && OutStreamer.hasRawTextSupport()) {
+ SmallString<128> TmpStr;
+ raw_svector_ostream OS(TmpStr);
+ PrintDebugValueComment(MI, OS);
+ OutStreamer.EmitRawText(StringRef(OS.str()));
+ }
+ return;
+ }
case ARM::tPICADD: {
// This is a pseudo op for a label + instruction sequence, which looks like:
// LPC0:
OutStreamer.EmitInstruction(AddInst);
return;
}
- case ARM::PICADD: { // FIXME: Remove asm string from td file.
+ case ARM::PICADD: {
// This is a pseudo op for a label + instruction sequence, which looks like:
// LPC0:
// add r0, pc, r0
return;
}
- case ARM::CONSTPOOL_ENTRY: { // FIXME: Remove asm string from td file.
+ case ARM::CONSTPOOL_ENTRY: {
/// CONSTPOOL_ENTRY - This instruction represents a floating constant pool
/// in the function. The first operand is the ID# for this instruction, the
/// second is the index into the MachineConstantPool that this is, the third
return;
}
- case ARM::MOVi2pieces: { // FIXME: Remove asmstring from td file.
+ case ARM::MOVi2pieces: {
+ // FIXME: We'd like to remove the asm string in the .td file, but the
// This is a hack that lowers as a two instruction sequence.
unsigned DstReg = MI->getOperand(0).getReg();
unsigned ImmVal = (unsigned)MI->getOperand(1).getImm();
}
return;
}
- case ARM::MOVi32imm: { // FIXME: Remove asmstring from td file.
+ case ARM::MOVi32imm: {
+ // FIXME: We'd like to remove the asm string in the .td file, but the
// This is a hack that lowers as a two instruction sequence.
unsigned DstReg = MI->getOperand(0).getReg();
const MachineOperand &MO = MI->getOperand(1);
// Non-Darwin binutils don't yet support the "trap" mnemonic.
// FIXME: Remove this special case when they do.
if (!Subtarget->isTargetDarwin()) {
- //.long 0xe7ffdefe ${:comment} trap
+ //.long 0xe7ffdefe @ trap
uint32_t Val = 0xe7ffdefeUL;
OutStreamer.AddComment("trap");
OutStreamer.EmitIntValue(Val, 4);
// Non-Darwin binutils don't yet support the "trap" mnemonic.
// FIXME: Remove this special case when they do.
if (!Subtarget->isTargetDarwin()) {
- //.short 57086 ${:comment} trap
+ //.short 57086 @ trap
uint16_t Val = 0xdefe;
OutStreamer.AddComment("trap");
OutStreamer.EmitIntValue(Val, 2);
}
case ARM::t2Int_eh_sjlj_setjmp:
case ARM::t2Int_eh_sjlj_setjmp_nofp:
- case ARM::tInt_eh_sjlj_setjmp: { // FIXME: Remove asmstring from td file.
+ case ARM::tInt_eh_sjlj_setjmp: {
// Two incoming args: GPR:$src, GPR:$val
// mov $val, pc
// adds $val, #7
}
case ARM::Int_eh_sjlj_setjmp_nofp:
- case ARM::Int_eh_sjlj_setjmp: { // FIXME: Remove asmstring from td file.
+ case ARM::Int_eh_sjlj_setjmp: {
// Two incoming args: GPR:$src, GPR:$val
// add $val, pc, #8
// str $val, [$src, #+4]
projects / oota-llvm.git / blobdiff