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Add assert in asmprinter to catch such cases and xfail the tests. PR is to be filled. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@86375 91177308-0d34-0410-b5e6-96231b3b80d8
1524 lines
52 KiB
C++
1524 lines
52 KiB
C++
//===-- ARMAsmPrinter.cpp - Print machine code to an ARM .s file ----------===//
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//
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// The LLVM Compiler Infrastructure
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//
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// This file is distributed under the University of Illinois Open Source
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// License. See LICENSE.TXT for details.
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//
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//===----------------------------------------------------------------------===//
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//
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// This file contains a printer that converts from our internal representation
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// of machine-dependent LLVM code to GAS-format ARM assembly language.
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//
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//===----------------------------------------------------------------------===//
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#define DEBUG_TYPE "asm-printer"
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#include "ARM.h"
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#include "ARMBuildAttrs.h"
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#include "ARMAddressingModes.h"
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#include "ARMConstantPoolValue.h"
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#include "ARMInstPrinter.h"
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#include "ARMMachineFunctionInfo.h"
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#include "ARMMCInstLower.h"
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#include "ARMTargetMachine.h"
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#include "llvm/Constants.h"
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#include "llvm/Module.h"
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#include "llvm/Assembly/Writer.h"
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#include "llvm/CodeGen/AsmPrinter.h"
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#include "llvm/CodeGen/DwarfWriter.h"
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#include "llvm/CodeGen/MachineModuleInfoImpls.h"
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#include "llvm/CodeGen/MachineFunctionPass.h"
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#include "llvm/CodeGen/MachineJumpTableInfo.h"
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#include "llvm/MC/MCAsmInfo.h"
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#include "llvm/MC/MCContext.h"
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#include "llvm/MC/MCInst.h"
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#include "llvm/MC/MCSectionMachO.h"
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#include "llvm/MC/MCStreamer.h"
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#include "llvm/MC/MCSymbol.h"
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#include "llvm/Target/TargetData.h"
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#include "llvm/Target/TargetLoweringObjectFile.h"
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#include "llvm/Target/TargetMachine.h"
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#include "llvm/Target/TargetOptions.h"
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#include "llvm/Target/TargetRegistry.h"
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#include "llvm/ADT/SmallPtrSet.h"
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#include "llvm/ADT/SmallString.h"
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#include "llvm/ADT/Statistic.h"
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#include "llvm/ADT/StringExtras.h"
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#include "llvm/ADT/StringSet.h"
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#include "llvm/Support/CommandLine.h"
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#include "llvm/Support/ErrorHandling.h"
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#include "llvm/Support/FormattedStream.h"
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#include "llvm/Support/Mangler.h"
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#include "llvm/Support/MathExtras.h"
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#include <cctype>
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using namespace llvm;
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STATISTIC(EmittedInsts, "Number of machine instrs printed");
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static cl::opt<bool>
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EnableMCInst("enable-arm-mcinst-printer", cl::Hidden,
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cl::desc("enable experimental asmprinter gunk in the arm backend"));
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namespace {
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class ARMAsmPrinter : public AsmPrinter {
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/// Subtarget - Keep a pointer to the ARMSubtarget around so that we can
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/// make the right decision when printing asm code for different targets.
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const ARMSubtarget *Subtarget;
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/// AFI - Keep a pointer to ARMFunctionInfo for the current
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/// MachineFunction.
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ARMFunctionInfo *AFI;
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/// MCP - Keep a pointer to constantpool entries of the current
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/// MachineFunction.
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const MachineConstantPool *MCP;
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public:
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explicit ARMAsmPrinter(formatted_raw_ostream &O, TargetMachine &TM,
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const MCAsmInfo *T, bool V)
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: AsmPrinter(O, TM, T, V), AFI(NULL), MCP(NULL) {
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Subtarget = &TM.getSubtarget<ARMSubtarget>();
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}
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virtual const char *getPassName() const {
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return "ARM Assembly Printer";
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}
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void printMCInst(const MCInst *MI) {
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ARMInstPrinter(O, *MAI, VerboseAsm).printInstruction(MI);
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}
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void printInstructionThroughMCStreamer(const MachineInstr *MI);
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void printOperand(const MachineInstr *MI, int OpNum,
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const char *Modifier = 0);
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void printSOImmOperand(const MachineInstr *MI, int OpNum);
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void printSOImm2PartOperand(const MachineInstr *MI, int OpNum);
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void printSORegOperand(const MachineInstr *MI, int OpNum);
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void printAddrMode2Operand(const MachineInstr *MI, int OpNum);
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void printAddrMode2OffsetOperand(const MachineInstr *MI, int OpNum);
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void printAddrMode3Operand(const MachineInstr *MI, int OpNum);
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void printAddrMode3OffsetOperand(const MachineInstr *MI, int OpNum);
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void printAddrMode4Operand(const MachineInstr *MI, int OpNum,
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const char *Modifier = 0);
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void printAddrMode5Operand(const MachineInstr *MI, int OpNum,
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const char *Modifier = 0);
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void printAddrMode6Operand(const MachineInstr *MI, int OpNum);
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void printAddrModePCOperand(const MachineInstr *MI, int OpNum,
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const char *Modifier = 0);
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void printBitfieldInvMaskImmOperand (const MachineInstr *MI, int OpNum);
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void printThumbITMask(const MachineInstr *MI, int OpNum);
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void printThumbAddrModeRROperand(const MachineInstr *MI, int OpNum);
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void printThumbAddrModeRI5Operand(const MachineInstr *MI, int OpNum,
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unsigned Scale);
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void printThumbAddrModeS1Operand(const MachineInstr *MI, int OpNum);
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void printThumbAddrModeS2Operand(const MachineInstr *MI, int OpNum);
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void printThumbAddrModeS4Operand(const MachineInstr *MI, int OpNum);
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void printThumbAddrModeSPOperand(const MachineInstr *MI, int OpNum);
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void printT2SOOperand(const MachineInstr *MI, int OpNum);
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void printT2AddrModeImm12Operand(const MachineInstr *MI, int OpNum);
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void printT2AddrModeImm8Operand(const MachineInstr *MI, int OpNum);
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void printT2AddrModeImm8s4Operand(const MachineInstr *MI, int OpNum);
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void printT2AddrModeImm8OffsetOperand(const MachineInstr *MI, int OpNum);
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void printT2AddrModeSoRegOperand(const MachineInstr *MI, int OpNum);
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void printPredicateOperand(const MachineInstr *MI, int OpNum);
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void printSBitModifierOperand(const MachineInstr *MI, int OpNum);
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void printPCLabel(const MachineInstr *MI, int OpNum);
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void printRegisterList(const MachineInstr *MI, int OpNum);
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void printCPInstOperand(const MachineInstr *MI, int OpNum,
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const char *Modifier);
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void printJTBlockOperand(const MachineInstr *MI, int OpNum);
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void printJT2BlockOperand(const MachineInstr *MI, int OpNum);
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void printTBAddrMode(const MachineInstr *MI, int OpNum);
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void printNoHashImmediate(const MachineInstr *MI, int OpNum);
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void printVFPf32ImmOperand(const MachineInstr *MI, int OpNum);
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void printVFPf64ImmOperand(const MachineInstr *MI, int OpNum);
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void printHex8ImmOperand(const MachineInstr *MI, int OpNum) {
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O << "#0x" << utohexstr(MI->getOperand(OpNum).getImm() & 0xff);
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}
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void printHex16ImmOperand(const MachineInstr *MI, int OpNum) {
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O << "#0x" << utohexstr(MI->getOperand(OpNum).getImm() & 0xffff);
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}
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void printHex32ImmOperand(const MachineInstr *MI, int OpNum) {
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O << "#0x" << utohexstr(MI->getOperand(OpNum).getImm() & 0xffffffff);
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}
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void printHex64ImmOperand(const MachineInstr *MI, int OpNum) {
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O << "#0x" << utohexstr(MI->getOperand(OpNum).getImm());
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}
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virtual bool PrintAsmOperand(const MachineInstr *MI, unsigned OpNum,
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unsigned AsmVariant, const char *ExtraCode);
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virtual bool PrintAsmMemoryOperand(const MachineInstr *MI, unsigned OpNum,
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unsigned AsmVariant,
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const char *ExtraCode);
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void PrintGlobalVariable(const GlobalVariable* GVar);
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void printInstruction(const MachineInstr *MI); // autogenerated.
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static const char *getRegisterName(unsigned RegNo);
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void printMachineInstruction(const MachineInstr *MI);
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bool runOnMachineFunction(MachineFunction &F);
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void EmitStartOfAsmFile(Module &M);
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void EmitEndOfAsmFile(Module &M);
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/// EmitMachineConstantPoolValue - Print a machine constantpool value to
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/// the .s file.
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virtual void EmitMachineConstantPoolValue(MachineConstantPoolValue *MCPV) {
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printDataDirective(MCPV->getType());
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ARMConstantPoolValue *ACPV = static_cast<ARMConstantPoolValue*>(MCPV);
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std::string Name;
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if (ACPV->isLSDA()) {
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SmallString<16> LSDAName;
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raw_svector_ostream(LSDAName) << MAI->getPrivateGlobalPrefix() <<
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"_LSDA_" << getFunctionNumber();
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Name = LSDAName.str();
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} else if (ACPV->isBlockAddress()) {
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Name = GetBlockAddressSymbol(ACPV->getBlockAddress())->getName();
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} else if (ACPV->isGlobalValue()) {
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GlobalValue *GV = ACPV->getGV();
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bool isIndirect = Subtarget->isTargetDarwin() &&
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Subtarget->GVIsIndirectSymbol(GV, TM.getRelocationModel());
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if (!isIndirect)
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Name = Mang->getMangledName(GV);
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else {
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// FIXME: Remove this when Darwin transition to @GOT like syntax.
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Name = Mang->getMangledName(GV, "$non_lazy_ptr", true);
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MCSymbol *Sym = OutContext.GetOrCreateSymbol(StringRef(Name));
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MachineModuleInfoMachO &MMIMachO =
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MMI->getObjFileInfo<MachineModuleInfoMachO>();
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const MCSymbol *&StubSym =
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GV->hasHiddenVisibility() ? MMIMachO.getHiddenGVStubEntry(Sym) :
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MMIMachO.getGVStubEntry(Sym);
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if (StubSym == 0) {
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SmallString<128> NameStr;
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Mang->getNameWithPrefix(NameStr, GV, false);
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StubSym = OutContext.GetOrCreateSymbol(NameStr.str());
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}
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}
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} else {
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assert(ACPV->isExtSymbol() && "unrecognized constant pool value");
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Name = Mang->makeNameProper(ACPV->getSymbol());
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}
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O << Name;
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if (ACPV->hasModifier()) O << "(" << ACPV->getModifier() << ")";
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if (ACPV->getPCAdjustment() != 0) {
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O << "-(" << MAI->getPrivateGlobalPrefix() << "PC"
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<< getFunctionNumber() << "_" << ACPV->getLabelId()
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<< "+" << (unsigned)ACPV->getPCAdjustment();
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if (ACPV->mustAddCurrentAddress())
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O << "-.";
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O << ")";
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}
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O << "\n";
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}
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void getAnalysisUsage(AnalysisUsage &AU) const {
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AsmPrinter::getAnalysisUsage(AU);
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AU.setPreservesAll();
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AU.addRequired<MachineModuleInfo>();
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AU.addRequired<DwarfWriter>();
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}
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};
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} // end of anonymous namespace
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#include "ARMGenAsmWriter.inc"
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/// runOnMachineFunction - This uses the printInstruction()
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/// method to print assembly for each instruction.
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///
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bool ARMAsmPrinter::runOnMachineFunction(MachineFunction &MF) {
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this->MF = &MF;
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AFI = MF.getInfo<ARMFunctionInfo>();
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MCP = MF.getConstantPool();
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SetupMachineFunction(MF);
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O << "\n";
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// NOTE: we don't print out constant pools here, they are handled as
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// instructions.
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O << '\n';
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// Print out labels for the function.
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const Function *F = MF.getFunction();
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OutStreamer.SwitchSection(getObjFileLowering().SectionForGlobal(F, Mang, TM));
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switch (F->getLinkage()) {
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default: llvm_unreachable("Unknown linkage type!");
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case Function::PrivateLinkage:
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case Function::InternalLinkage:
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break;
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case Function::ExternalLinkage:
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O << "\t.globl\t" << CurrentFnName << "\n";
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break;
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case Function::LinkerPrivateLinkage:
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case Function::WeakAnyLinkage:
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case Function::WeakODRLinkage:
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case Function::LinkOnceAnyLinkage:
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case Function::LinkOnceODRLinkage:
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if (Subtarget->isTargetDarwin()) {
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O << "\t.globl\t" << CurrentFnName << "\n";
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O << "\t.weak_definition\t" << CurrentFnName << "\n";
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} else {
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O << MAI->getWeakRefDirective() << CurrentFnName << "\n";
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}
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break;
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}
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printVisibility(CurrentFnName, F->getVisibility());
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unsigned FnAlign = 1 << MF.getAlignment(); // MF alignment is log2.
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if (AFI->isThumbFunction()) {
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EmitAlignment(FnAlign, F, AFI->getAlign());
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O << "\t.code\t16\n";
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O << "\t.thumb_func";
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if (Subtarget->isTargetDarwin())
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O << "\t" << CurrentFnName;
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O << "\n";
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} else {
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EmitAlignment(FnAlign, F);
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}
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O << CurrentFnName << ":\n";
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// Emit pre-function debug information.
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DW->BeginFunction(&MF);
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if (Subtarget->isTargetDarwin()) {
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// If the function is empty, then we need to emit *something*. Otherwise,
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// the function's label might be associated with something that it wasn't
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// meant to be associated with. We emit a noop in this situation.
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MachineFunction::iterator I = MF.begin();
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if (++I == MF.end() && MF.front().empty())
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O << "\tnop\n";
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}
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// Print out code for the function.
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for (MachineFunction::const_iterator I = MF.begin(), E = MF.end();
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I != E; ++I) {
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// Print a label for the basic block.
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if (I != MF.begin())
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EmitBasicBlockStart(I);
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// Print the assembly for the instruction.
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for (MachineBasicBlock::const_iterator II = I->begin(), E = I->end();
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II != E; ++II)
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printMachineInstruction(II);
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}
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if (MAI->hasDotTypeDotSizeDirective())
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O << "\t.size " << CurrentFnName << ", .-" << CurrentFnName << "\n";
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// Emit post-function debug information.
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DW->EndFunction(&MF);
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return false;
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}
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void ARMAsmPrinter::printOperand(const MachineInstr *MI, int OpNum,
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const char *Modifier) {
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const MachineOperand &MO = MI->getOperand(OpNum);
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switch (MO.getType()) {
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default:
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assert(0 && "<unknown operand type>");
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case MachineOperand::MO_Register: {
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unsigned Reg = MO.getReg();
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assert(TargetRegisterInfo::isPhysicalRegister(Reg));
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if (Modifier && strcmp(Modifier, "dregpair") == 0) {
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unsigned DRegLo = TRI->getSubReg(Reg, 5); // arm_dsubreg_0
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unsigned DRegHi = TRI->getSubReg(Reg, 6); // arm_dsubreg_1
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O << '{'
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<< getRegisterName(DRegLo) << ',' << getRegisterName(DRegHi)
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<< '}';
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} else if (Modifier && strcmp(Modifier, "lane") == 0) {
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unsigned RegNum = ARMRegisterInfo::getRegisterNumbering(Reg);
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unsigned DReg = TRI->getMatchingSuperReg(Reg, RegNum & 1 ? 2 : 1,
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&ARM::DPR_VFP2RegClass);
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O << getRegisterName(DReg) << '[' << (RegNum & 1) << ']';
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} else {
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assert(!MO.getSubReg() && "Subregs should be eliminated!");
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O << getRegisterName(Reg);
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}
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break;
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}
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case MachineOperand::MO_Immediate: {
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int64_t Imm = MO.getImm();
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O << '#';
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if (Modifier) {
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if (strcmp(Modifier, "lo16") == 0)
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O << ":lower16:";
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else if (strcmp(Modifier, "hi16") == 0)
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O << ":upper16:";
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}
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O << Imm;
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break;
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}
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case MachineOperand::MO_MachineBasicBlock:
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GetMBBSymbol(MO.getMBB()->getNumber())->print(O, MAI);
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return;
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case MachineOperand::MO_GlobalAddress: {
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bool isCallOp = Modifier && !strcmp(Modifier, "call");
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GlobalValue *GV = MO.getGlobal();
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O << Mang->getMangledName(GV);
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printOffset(MO.getOffset());
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if (isCallOp && Subtarget->isTargetELF() &&
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TM.getRelocationModel() == Reloc::PIC_)
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O << "(PLT)";
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break;
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}
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case MachineOperand::MO_ExternalSymbol: {
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bool isCallOp = Modifier && !strcmp(Modifier, "call");
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std::string Name = Mang->makeNameProper(MO.getSymbolName());
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O << Name;
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if (isCallOp && Subtarget->isTargetELF() &&
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TM.getRelocationModel() == Reloc::PIC_)
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O << "(PLT)";
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break;
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}
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case MachineOperand::MO_ConstantPoolIndex:
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O << MAI->getPrivateGlobalPrefix() << "CPI" << getFunctionNumber()
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<< '_' << MO.getIndex();
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break;
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case MachineOperand::MO_JumpTableIndex:
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O << MAI->getPrivateGlobalPrefix() << "JTI" << getFunctionNumber()
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<< '_' << MO.getIndex();
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break;
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}
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}
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static void printSOImm(formatted_raw_ostream &O, int64_t V, bool VerboseAsm,
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const MCAsmInfo *MAI) {
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// Break it up into two parts that make up a shifter immediate.
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V = ARM_AM::getSOImmVal(V);
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assert(V != -1 && "Not a valid so_imm value!");
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unsigned Imm = ARM_AM::getSOImmValImm(V);
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unsigned Rot = ARM_AM::getSOImmValRot(V);
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// Print low-level immediate formation info, per
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// A5.1.3: "Data-processing operands - Immediate".
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if (Rot) {
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O << "#" << Imm << ", " << Rot;
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// Pretty printed version.
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if (VerboseAsm) {
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O.PadToColumn(MAI->getCommentColumn());
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O << MAI->getCommentString() << ' ';
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O << (int)ARM_AM::rotr32(Imm, Rot);
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}
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} else {
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O << "#" << Imm;
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}
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}
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/// printSOImmOperand - SOImm is 4-bit rotate amount in bits 8-11 with 8-bit
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/// immediate in bits 0-7.
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void ARMAsmPrinter::printSOImmOperand(const MachineInstr *MI, int OpNum) {
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const MachineOperand &MO = MI->getOperand(OpNum);
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assert(MO.isImm() && "Not a valid so_imm value!");
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printSOImm(O, MO.getImm(), VerboseAsm, MAI);
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}
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/// printSOImm2PartOperand - SOImm is broken into two pieces using a 'mov'
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/// followed by an 'orr' to materialize.
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void ARMAsmPrinter::printSOImm2PartOperand(const MachineInstr *MI, int OpNum) {
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const MachineOperand &MO = MI->getOperand(OpNum);
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assert(MO.isImm() && "Not a valid so_imm value!");
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unsigned V1 = ARM_AM::getSOImmTwoPartFirst(MO.getImm());
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unsigned V2 = ARM_AM::getSOImmTwoPartSecond(MO.getImm());
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printSOImm(O, V1, VerboseAsm, MAI);
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O << "\n\torr";
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printPredicateOperand(MI, 2);
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O << "\t";
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printOperand(MI, 0);
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O << ", ";
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printOperand(MI, 0);
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O << ", ";
|
|
printSOImm(O, V2, VerboseAsm, 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) {
|
|
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.
|
|
O << ", "
|
|
<< ARM_AM::getShiftOpcStr(ARM_AM::getSORegShOp(MO3.getImm()))
|
|
<< " ";
|
|
|
|
if (MO2.getReg()) {
|
|
O << getRegisterName(MO2.getReg());
|
|
assert(ARM_AM::getSORegOffset(MO3.getImm()) == 0);
|
|
} else {
|
|
O << "#" << ARM_AM::getSORegOffset(MO3.getImm());
|
|
}
|
|
}
|
|
|
|
void ARMAsmPrinter::printAddrMode2Operand(const MachineInstr *MI, int Op) {
|
|
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);
|
|
return;
|
|
}
|
|
|
|
O << "[" << getRegisterName(MO1.getReg());
|
|
|
|
if (!MO2.getReg()) {
|
|
if (ARM_AM::getAM2Offset(MO3.getImm())) // Don't print +0.
|
|
O << ", #"
|
|
<< (char)ARM_AM::getAM2Op(MO3.getImm())
|
|
<< ARM_AM::getAM2Offset(MO3.getImm());
|
|
O << "]";
|
|
return;
|
|
}
|
|
|
|
O << ", "
|
|
<< (char)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){
|
|
const MachineOperand &MO1 = MI->getOperand(Op);
|
|
const MachineOperand &MO2 = MI->getOperand(Op+1);
|
|
|
|
if (!MO1.getReg()) {
|
|
unsigned ImmOffs = ARM_AM::getAM2Offset(MO2.getImm());
|
|
assert(ImmOffs && "Malformed indexed load / store!");
|
|
O << "#"
|
|
<< (char)ARM_AM::getAM2Op(MO2.getImm())
|
|
<< ImmOffs;
|
|
return;
|
|
}
|
|
|
|
O << (char)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) {
|
|
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 << ", #"
|
|
<< (char)ARM_AM::getAM3Op(MO3.getImm())
|
|
<< ImmOffs;
|
|
O << "]";
|
|
}
|
|
|
|
void ARMAsmPrinter::printAddrMode3OffsetOperand(const MachineInstr *MI, int Op){
|
|
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());
|
|
assert(ImmOffs && "Malformed indexed load / store!");
|
|
O << "#"
|
|
<< (char)ARM_AM::getAM3Op(MO2.getImm())
|
|
<< ImmOffs;
|
|
}
|
|
|
|
void ARMAsmPrinter::printAddrMode4Operand(const MachineInstr *MI, int Op,
|
|
const char *Modifier) {
|
|
const MachineOperand &MO1 = MI->getOperand(Op);
|
|
const MachineOperand &MO2 = MI->getOperand(Op+1);
|
|
ARM_AM::AMSubMode Mode = ARM_AM::getAM4SubMode(MO2.getImm());
|
|
if (Modifier && strcmp(Modifier, "submode") == 0) {
|
|
if (MO1.getReg() == ARM::SP) {
|
|
// FIXME
|
|
bool isLDM = (MI->getOpcode() == ARM::LDM ||
|
|
MI->getOpcode() == ARM::LDM_RET ||
|
|
MI->getOpcode() == ARM::t2LDM ||
|
|
MI->getOpcode() == ARM::t2LDM_RET);
|
|
O << ARM_AM::getAMSubModeAltStr(Mode, isLDM);
|
|
} else
|
|
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);
|
|
if (ARM_AM::getAM4WBFlag(MO2.getImm()))
|
|
O << "!";
|
|
}
|
|
}
|
|
|
|
void ARMAsmPrinter::printAddrMode5Operand(const MachineInstr *MI, int Op,
|
|
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);
|
|
return;
|
|
}
|
|
|
|
assert(TargetRegisterInfo::isPhysicalRegister(MO1.getReg()));
|
|
|
|
if (Modifier && strcmp(Modifier, "submode") == 0) {
|
|
ARM_AM::AMSubMode Mode = ARM_AM::getAM5SubMode(MO2.getImm());
|
|
if (MO1.getReg() == ARM::SP) {
|
|
bool isFLDM = (MI->getOpcode() == ARM::FLDMD ||
|
|
MI->getOpcode() == ARM::FLDMS);
|
|
O << ARM_AM::getAMSubModeAltStr(Mode, isFLDM);
|
|
} else
|
|
O << ARM_AM::getAMSubModeStr(Mode);
|
|
return;
|
|
} else if (Modifier && strcmp(Modifier, "base") == 0) {
|
|
// Used for FSTM{D|S} and LSTM{D|S} operations.
|
|
O << getRegisterName(MO1.getReg());
|
|
if (ARM_AM::getAM5WBFlag(MO2.getImm()))
|
|
O << "!";
|
|
return;
|
|
}
|
|
|
|
O << "[" << getRegisterName(MO1.getReg());
|
|
|
|
if (unsigned ImmOffs = ARM_AM::getAM5Offset(MO2.getImm())) {
|
|
O << ", #"
|
|
<< (char)ARM_AM::getAM5Op(MO2.getImm())
|
|
<< ImmOffs*4;
|
|
}
|
|
O << "]";
|
|
}
|
|
|
|
void ARMAsmPrinter::printAddrMode6Operand(const MachineInstr *MI, int Op) {
|
|
const MachineOperand &MO1 = MI->getOperand(Op);
|
|
const MachineOperand &MO2 = MI->getOperand(Op+1);
|
|
const MachineOperand &MO3 = MI->getOperand(Op+2);
|
|
|
|
// FIXME: No support yet for specifying alignment.
|
|
O << "[" << getRegisterName(MO1.getReg()) << "]";
|
|
|
|
if (ARM_AM::getAM6WBFlag(MO3.getImm())) {
|
|
if (MO2.getReg() == 0)
|
|
O << "!";
|
|
else
|
|
O << ", " << getRegisterName(MO2.getReg());
|
|
}
|
|
}
|
|
|
|
void ARMAsmPrinter::printAddrModePCOperand(const MachineInstr *MI, int Op,
|
|
const char *Modifier) {
|
|
if (Modifier && strcmp(Modifier, "label") == 0) {
|
|
printPCLabel(MI, Op+1);
|
|
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) {
|
|
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::printThumbITMask(const MachineInstr *MI, int Op) {
|
|
// (3 - the number of trailing zeros) is the number of then / else.
|
|
unsigned Mask = MI->getOperand(Op).getImm();
|
|
unsigned NumTZ = CountTrailingZeros_32(Mask);
|
|
assert(NumTZ <= 3 && "Invalid IT mask!");
|
|
for (unsigned Pos = 3, e = NumTZ; Pos > e; --Pos) {
|
|
bool T = (Mask & (1 << Pos)) == 0;
|
|
if (T)
|
|
O << 't';
|
|
else
|
|
O << 'e';
|
|
}
|
|
}
|
|
|
|
void
|
|
ARMAsmPrinter::printThumbAddrModeRROperand(const MachineInstr *MI, int Op) {
|
|
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,
|
|
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);
|
|
return;
|
|
}
|
|
|
|
O << "[" << getRegisterName(MO1.getReg());
|
|
if (MO3.getReg())
|
|
O << ", " << getRegisterName(MO3.getReg());
|
|
else if (unsigned ImmOffs = MO2.getImm()) {
|
|
O << ", #" << ImmOffs;
|
|
if (Scale > 1)
|
|
O << " * " << Scale;
|
|
}
|
|
O << "]";
|
|
}
|
|
|
|
void
|
|
ARMAsmPrinter::printThumbAddrModeS1Operand(const MachineInstr *MI, int Op) {
|
|
printThumbAddrModeRI5Operand(MI, Op, 1);
|
|
}
|
|
void
|
|
ARMAsmPrinter::printThumbAddrModeS2Operand(const MachineInstr *MI, int Op) {
|
|
printThumbAddrModeRI5Operand(MI, Op, 2);
|
|
}
|
|
void
|
|
ARMAsmPrinter::printThumbAddrModeS4Operand(const MachineInstr *MI, int Op) {
|
|
printThumbAddrModeRI5Operand(MI, Op, 4);
|
|
}
|
|
|
|
void ARMAsmPrinter::printThumbAddrModeSPOperand(const MachineInstr *MI,int Op) {
|
|
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) {
|
|
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.
|
|
O << ", "
|
|
<< ARM_AM::getShiftOpcStr(ARM_AM::getSORegShOp(MO2.getImm()))
|
|
<< " ";
|
|
|
|
assert(MO2.isImm() && "Not a valid t2_so_reg value!");
|
|
O << "#" << ARM_AM::getSORegOffset(MO2.getImm());
|
|
}
|
|
|
|
void ARMAsmPrinter::printT2AddrModeImm12Operand(const MachineInstr *MI,
|
|
int OpNum) {
|
|
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) {
|
|
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) {
|
|
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) {
|
|
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) {
|
|
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) {
|
|
ARMCC::CondCodes CC = (ARMCC::CondCodes)MI->getOperand(OpNum).getImm();
|
|
if (CC != ARMCC::AL)
|
|
O << ARMCondCodeToString(CC);
|
|
}
|
|
|
|
void ARMAsmPrinter::printSBitModifierOperand(const MachineInstr *MI, int OpNum){
|
|
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) {
|
|
int Id = (int)MI->getOperand(OpNum).getImm();
|
|
O << MAI->getPrivateGlobalPrefix()
|
|
<< "PC" << getFunctionNumber() << "_" << Id;
|
|
}
|
|
|
|
void ARMAsmPrinter::printRegisterList(const MachineInstr *MI, int OpNum) {
|
|
O << "{";
|
|
// Always skip the first operand, it's the optional (and implicit writeback).
|
|
for (unsigned i = OpNum+1, e = MI->getNumOperands(); i != e; ++i) {
|
|
if (MI->getOperand(i).isImplicit())
|
|
continue;
|
|
if ((int)i != OpNum+1) O << ", ";
|
|
printOperand(MI, i);
|
|
}
|
|
O << "}";
|
|
}
|
|
|
|
void ARMAsmPrinter::printCPInstOperand(const MachineInstr *MI, int OpNum,
|
|
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();
|
|
O << MAI->getPrivateGlobalPrefix() << "CPI" << getFunctionNumber()
|
|
<< '_' << ID << ":\n";
|
|
} 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);
|
|
}
|
|
}
|
|
}
|
|
|
|
void ARMAsmPrinter::printJTBlockOperand(const MachineInstr *MI, int OpNum) {
|
|
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();
|
|
O << MAI->getPrivateGlobalPrefix() << "JTI" << getFunctionNumber()
|
|
<< '_' << JTI << '_' << MO2.getImm() << ":\n";
|
|
|
|
const char *JTEntryDirective = MAI->getData32bitsDirective();
|
|
|
|
const MachineFunction *MF = MI->getParent()->getParent();
|
|
const MachineJumpTableInfo *MJTI = MF->getJumpTableInfo();
|
|
const std::vector<MachineJumpTableEntry> &JT = MJTI->getJumpTables();
|
|
const std::vector<MachineBasicBlock*> &JTBBs = JT[JTI].MBBs;
|
|
bool UseSet= MAI->getSetDirective() && 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)
|
|
printPICJumpTableSetLabel(JTI, MO2.getImm(), MBB);
|
|
|
|
O << JTEntryDirective << ' ';
|
|
if (UseSet)
|
|
O << MAI->getPrivateGlobalPrefix() << getFunctionNumber()
|
|
<< '_' << JTI << '_' << MO2.getImm()
|
|
<< "_set_" << MBB->getNumber();
|
|
else if (TM.getRelocationModel() == Reloc::PIC_) {
|
|
GetMBBSymbol(MBB->getNumber())->print(O, MAI);
|
|
O << '-' << MAI->getPrivateGlobalPrefix() << "JTI"
|
|
<< getFunctionNumber() << '_' << JTI << '_' << MO2.getImm();
|
|
} else {
|
|
GetMBBSymbol(MBB->getNumber())->print(O, MAI);
|
|
}
|
|
if (i != e-1)
|
|
O << '\n';
|
|
}
|
|
}
|
|
|
|
void ARMAsmPrinter::printJT2BlockOperand(const MachineInstr *MI, int OpNum) {
|
|
const MachineOperand &MO1 = MI->getOperand(OpNum);
|
|
const MachineOperand &MO2 = MI->getOperand(OpNum+1); // Unique Id
|
|
unsigned JTI = MO1.getIndex();
|
|
O << MAI->getPrivateGlobalPrefix() << "JTI" << getFunctionNumber()
|
|
<< '_' << JTI << '_' << MO2.getImm() << ":\n";
|
|
|
|
const MachineFunction *MF = MI->getParent()->getParent();
|
|
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 << '(';
|
|
GetMBBSymbol(MBB->getNumber())->print(O, MAI);
|
|
O << "-" << MAI->getPrivateGlobalPrefix() << "JTI" << getFunctionNumber()
|
|
<< '_' << JTI << '_' << MO2.getImm() << ")/2";
|
|
} else {
|
|
O << "\tb.w ";
|
|
GetMBBSymbol(MBB->getNumber())->print(O, MAI);
|
|
}
|
|
if (i != e-1)
|
|
O << '\n';
|
|
}
|
|
|
|
// Make sure the instruction that follows TBB is 2-byte aligned.
|
|
// FIXME: Constant island pass should insert an "ALIGN" instruction instead.
|
|
if (ByteOffset && (JTBBs.size() & 1)) {
|
|
O << '\n';
|
|
EmitAlignment(1);
|
|
}
|
|
}
|
|
|
|
void ARMAsmPrinter::printTBAddrMode(const MachineInstr *MI, int OpNum) {
|
|
O << "[pc, " << getRegisterName(MI->getOperand(OpNum).getReg());
|
|
if (MI->getOpcode() == ARM::t2TBH)
|
|
O << ", lsl #1";
|
|
O << ']';
|
|
}
|
|
|
|
void ARMAsmPrinter::printNoHashImmediate(const MachineInstr *MI, int OpNum) {
|
|
O << MI->getOperand(OpNum).getImm();
|
|
}
|
|
|
|
void ARMAsmPrinter::printVFPf32ImmOperand(const MachineInstr *MI, int OpNum) {
|
|
const ConstantFP *FP = MI->getOperand(OpNum).getFPImm();
|
|
O << '#' << ARM::getVFPf32Imm(FP->getValueAPF());
|
|
if (VerboseAsm) {
|
|
O.PadToColumn(MAI->getCommentColumn());
|
|
O << MAI->getCommentString() << ' ';
|
|
WriteAsOperand(O, FP, /*PrintType=*/false);
|
|
}
|
|
}
|
|
|
|
void ARMAsmPrinter::printVFPf64ImmOperand(const MachineInstr *MI, int OpNum) {
|
|
const ConstantFP *FP = MI->getOperand(OpNum).getFPImm();
|
|
O << '#' << ARM::getVFPf64Imm(FP->getValueAPF());
|
|
if (VerboseAsm) {
|
|
O.PadToColumn(MAI->getCommentColumn());
|
|
O << MAI->getCommentString() << ' ';
|
|
WriteAsOperand(O, FP, /*PrintType=*/false);
|
|
}
|
|
}
|
|
|
|
bool ARMAsmPrinter::PrintAsmOperand(const MachineInstr *MI, unsigned OpNum,
|
|
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 'a': // Print as a memory address.
|
|
if (MI->getOperand(OpNum).isReg()) {
|
|
O << "[" << 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);
|
|
return false;
|
|
case 'P': // Print a VFP double precision register.
|
|
printOperand(MI, OpNum);
|
|
return false;
|
|
case 'Q':
|
|
if (TM.getTargetData()->isLittleEndian())
|
|
break;
|
|
// Fallthrough
|
|
case 'R':
|
|
if (TM.getTargetData()->isBigEndian())
|
|
break;
|
|
// Fallthrough
|
|
case 'H': // Write second word of DI / DF reference.
|
|
// Verify that this operand has two consecutive registers.
|
|
if (!MI->getOperand(OpNum).isReg() ||
|
|
OpNum+1 == MI->getNumOperands() ||
|
|
!MI->getOperand(OpNum+1).isReg())
|
|
return true;
|
|
++OpNum; // Return the high-part.
|
|
}
|
|
}
|
|
|
|
printOperand(MI, OpNum);
|
|
return false;
|
|
}
|
|
|
|
bool ARMAsmPrinter::PrintAsmMemoryOperand(const MachineInstr *MI,
|
|
unsigned OpNum, unsigned AsmVariant,
|
|
const char *ExtraCode) {
|
|
if (ExtraCode && ExtraCode[0])
|
|
return true; // Unknown modifier.
|
|
|
|
const MachineOperand &MO = MI->getOperand(OpNum);
|
|
assert(MO.isReg() && "unexpected inline asm memory operand");
|
|
O << "[" << getRegisterName(MO.getReg()) << "]";
|
|
return false;
|
|
}
|
|
|
|
void ARMAsmPrinter::printMachineInstruction(const MachineInstr *MI) {
|
|
++EmittedInsts;
|
|
|
|
// Call the autogenerated instruction printer routines.
|
|
processDebugLoc(MI, true);
|
|
|
|
if (EnableMCInst) {
|
|
printInstructionThroughMCStreamer(MI);
|
|
} else {
|
|
int Opc = MI->getOpcode();
|
|
if (Opc == ARM::CONSTPOOL_ENTRY)
|
|
EmitAlignment(2);
|
|
|
|
printInstruction(MI);
|
|
}
|
|
|
|
if (VerboseAsm && !MI->getDebugLoc().isUnknown())
|
|
EmitComments(*MI);
|
|
O << '\n';
|
|
processDebugLoc(MI, false);
|
|
}
|
|
|
|
void ARMAsmPrinter::EmitStartOfAsmFile(Module &M) {
|
|
if (Subtarget->isTargetDarwin()) {
|
|
Reloc::Model RelocM = TM.getRelocationModel();
|
|
if (RelocM == Reloc::PIC_ || RelocM == Reloc::DynamicNoPIC) {
|
|
// Declare all the text sections up front (before the DWARF sections
|
|
// emitted by AsmPrinter::doInitialization) so the assembler will keep
|
|
// them together at the beginning of the object file. This helps
|
|
// avoid out-of-range branches that are due a fundamental limitation of
|
|
// the way symbol offsets are encoded with the current Darwin ARM
|
|
// relocations.
|
|
TargetLoweringObjectFileMachO &TLOFMacho =
|
|
static_cast<TargetLoweringObjectFileMachO &>(getObjFileLowering());
|
|
OutStreamer.SwitchSection(TLOFMacho.getTextSection());
|
|
OutStreamer.SwitchSection(TLOFMacho.getTextCoalSection());
|
|
OutStreamer.SwitchSection(TLOFMacho.getConstTextCoalSection());
|
|
if (RelocM == Reloc::DynamicNoPIC) {
|
|
const MCSection *sect =
|
|
TLOFMacho.getMachOSection("__TEXT", "__symbol_stub4",
|
|
MCSectionMachO::S_SYMBOL_STUBS,
|
|
12, SectionKind::getText());
|
|
OutStreamer.SwitchSection(sect);
|
|
} else {
|
|
const MCSection *sect =
|
|
TLOFMacho.getMachOSection("__TEXT", "__picsymbolstub4",
|
|
MCSectionMachO::S_SYMBOL_STUBS,
|
|
16, SectionKind::getText());
|
|
OutStreamer.SwitchSection(sect);
|
|
}
|
|
}
|
|
}
|
|
|
|
// Use unified assembler syntax mode for Thumb.
|
|
if (Subtarget->isThumb())
|
|
O << "\t.syntax unified\n";
|
|
|
|
// Emit ARM Build Attributes
|
|
if (Subtarget->isTargetELF()) {
|
|
// CPU Type
|
|
std::string CPUString = Subtarget->getCPUString();
|
|
if (CPUString != "generic")
|
|
O << "\t.cpu " << CPUString << '\n';
|
|
|
|
// FIXME: Emit FPU type
|
|
if (Subtarget->hasVFP2())
|
|
O << "\t.eabi_attribute " << ARMBuildAttrs::VFP_arch << ", 2\n";
|
|
|
|
// Signal various FP modes.
|
|
if (!UnsafeFPMath)
|
|
O << "\t.eabi_attribute " << ARMBuildAttrs::ABI_FP_denormal << ", 1\n"
|
|
<< "\t.eabi_attribute " << ARMBuildAttrs::ABI_FP_exceptions << ", 1\n";
|
|
|
|
if (FiniteOnlyFPMath())
|
|
O << "\t.eabi_attribute " << ARMBuildAttrs::ABI_FP_number_model << ", 1\n";
|
|
else
|
|
O << "\t.eabi_attribute " << ARMBuildAttrs::ABI_FP_number_model << ", 3\n";
|
|
|
|
// 8-bytes alignment stuff.
|
|
O << "\t.eabi_attribute " << ARMBuildAttrs::ABI_align8_needed << ", 1\n"
|
|
<< "\t.eabi_attribute " << ARMBuildAttrs::ABI_align8_preserved << ", 1\n";
|
|
|
|
// Hard float. Use both S and D registers and conform to AAPCS-VFP.
|
|
if (Subtarget->isAAPCS_ABI() && FloatABIType == FloatABI::Hard)
|
|
O << "\t.eabi_attribute " << ARMBuildAttrs::ABI_HardFP_use << ", 3\n"
|
|
<< "\t.eabi_attribute " << ARMBuildAttrs::ABI_VFP_args << ", 1\n";
|
|
|
|
// FIXME: Should we signal R9 usage?
|
|
}
|
|
}
|
|
|
|
void ARMAsmPrinter::PrintGlobalVariable(const GlobalVariable* GVar) {
|
|
const TargetData *TD = TM.getTargetData();
|
|
|
|
if (!GVar->hasInitializer()) // External global require no code
|
|
return;
|
|
|
|
// Check to see if this is a special global used by LLVM, if so, emit it.
|
|
|
|
if (EmitSpecialLLVMGlobal(GVar)) {
|
|
if (Subtarget->isTargetDarwin() &&
|
|
TM.getRelocationModel() == Reloc::Static) {
|
|
if (GVar->getName() == "llvm.global_ctors")
|
|
O << ".reference .constructors_used\n";
|
|
else if (GVar->getName() == "llvm.global_dtors")
|
|
O << ".reference .destructors_used\n";
|
|
}
|
|
return;
|
|
}
|
|
|
|
std::string name = Mang->getMangledName(GVar);
|
|
Constant *C = GVar->getInitializer();
|
|
const Type *Type = C->getType();
|
|
unsigned Size = TD->getTypeAllocSize(Type);
|
|
unsigned Align = TD->getPreferredAlignmentLog(GVar);
|
|
bool isDarwin = Subtarget->isTargetDarwin();
|
|
|
|
printVisibility(name, GVar->getVisibility());
|
|
|
|
if (Subtarget->isTargetELF())
|
|
O << "\t.type " << name << ",%object\n";
|
|
|
|
const MCSection *TheSection =
|
|
getObjFileLowering().SectionForGlobal(GVar, Mang, TM);
|
|
OutStreamer.SwitchSection(TheSection);
|
|
|
|
// FIXME: get this stuff from section kind flags.
|
|
if (C->isNullValue() && !GVar->hasSection() && !GVar->isThreadLocal() &&
|
|
// Don't put things that should go in the cstring section into "comm".
|
|
!TheSection->getKind().isMergeableCString()) {
|
|
if (GVar->hasExternalLinkage()) {
|
|
if (const char *Directive = MAI->getZeroFillDirective()) {
|
|
O << "\t.globl\t" << name << "\n";
|
|
O << Directive << "__DATA, __common, " << name << ", "
|
|
<< Size << ", " << Align << "\n";
|
|
return;
|
|
}
|
|
}
|
|
|
|
if (GVar->hasLocalLinkage() || GVar->isWeakForLinker()) {
|
|
if (Size == 0) Size = 1; // .comm Foo, 0 is undefined, avoid it.
|
|
|
|
if (isDarwin) {
|
|
if (GVar->hasLocalLinkage()) {
|
|
O << MAI->getLCOMMDirective() << name << "," << Size
|
|
<< ',' << Align;
|
|
} else if (GVar->hasCommonLinkage()) {
|
|
O << MAI->getCOMMDirective() << name << "," << Size
|
|
<< ',' << Align;
|
|
} else {
|
|
OutStreamer.SwitchSection(TheSection);
|
|
O << "\t.globl " << name << '\n'
|
|
<< MAI->getWeakDefDirective() << name << '\n';
|
|
EmitAlignment(Align, GVar);
|
|
O << name << ":";
|
|
if (VerboseAsm) {
|
|
O.PadToColumn(MAI->getCommentColumn());
|
|
O << MAI->getCommentString() << ' ';
|
|
WriteAsOperand(O, GVar, /*PrintType=*/false, GVar->getParent());
|
|
}
|
|
O << '\n';
|
|
EmitGlobalConstant(C);
|
|
return;
|
|
}
|
|
} else if (MAI->getLCOMMDirective() != NULL) {
|
|
if (GVar->hasLocalLinkage()) {
|
|
O << MAI->getLCOMMDirective() << name << "," << Size;
|
|
} else {
|
|
O << MAI->getCOMMDirective() << name << "," << Size;
|
|
if (MAI->getCOMMDirectiveTakesAlignment())
|
|
O << ',' << (MAI->getAlignmentIsInBytes() ? (1 << Align) : Align);
|
|
}
|
|
} else {
|
|
if (GVar->hasLocalLinkage())
|
|
O << "\t.local\t" << name << "\n";
|
|
O << MAI->getCOMMDirective() << name << "," << Size;
|
|
if (MAI->getCOMMDirectiveTakesAlignment())
|
|
O << "," << (MAI->getAlignmentIsInBytes() ? (1 << Align) : Align);
|
|
}
|
|
if (VerboseAsm) {
|
|
O.PadToColumn(MAI->getCommentColumn());
|
|
O << MAI->getCommentString() << ' ';
|
|
WriteAsOperand(O, GVar, /*PrintType=*/false, GVar->getParent());
|
|
}
|
|
O << "\n";
|
|
return;
|
|
}
|
|
}
|
|
|
|
switch (GVar->getLinkage()) {
|
|
case GlobalValue::CommonLinkage:
|
|
case GlobalValue::LinkOnceAnyLinkage:
|
|
case GlobalValue::LinkOnceODRLinkage:
|
|
case GlobalValue::WeakAnyLinkage:
|
|
case GlobalValue::WeakODRLinkage:
|
|
case GlobalValue::LinkerPrivateLinkage:
|
|
if (isDarwin) {
|
|
O << "\t.globl " << name << "\n"
|
|
<< "\t.weak_definition " << name << "\n";
|
|
} else {
|
|
O << "\t.weak " << name << "\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:
|
|
O << "\t.globl " << name << "\n";
|
|
break;
|
|
case GlobalValue::PrivateLinkage:
|
|
case GlobalValue::InternalLinkage:
|
|
break;
|
|
default:
|
|
llvm_unreachable("Unknown linkage type!");
|
|
}
|
|
|
|
EmitAlignment(Align, GVar);
|
|
O << name << ":";
|
|
if (VerboseAsm) {
|
|
O.PadToColumn(MAI->getCommentColumn());
|
|
O << MAI->getCommentString() << ' ';
|
|
WriteAsOperand(O, GVar, /*PrintType=*/false, GVar->getParent());
|
|
}
|
|
O << "\n";
|
|
if (MAI->hasDotTypeDotSizeDirective())
|
|
O << "\t.size " << name << ", " << Size << "\n";
|
|
|
|
EmitGlobalConstant(C);
|
|
O << '\n';
|
|
}
|
|
|
|
|
|
void ARMAsmPrinter::EmitEndOfAsmFile(Module &M) {
|
|
if (Subtarget->isTargetDarwin()) {
|
|
// All darwin targets use mach-o.
|
|
TargetLoweringObjectFileMachO &TLOFMacho =
|
|
static_cast<TargetLoweringObjectFileMachO &>(getObjFileLowering());
|
|
MachineModuleInfoMachO &MMIMacho =
|
|
MMI->getObjFileInfo<MachineModuleInfoMachO>();
|
|
|
|
O << '\n';
|
|
|
|
// Output non-lazy-pointers for external and common global variables.
|
|
MachineModuleInfoMachO::SymbolListTy Stubs = MMIMacho.GetGVStubList();
|
|
|
|
if (!Stubs.empty()) {
|
|
// Switch with ".non_lazy_symbol_pointer" directive.
|
|
OutStreamer.SwitchSection(TLOFMacho.getNonLazySymbolPointerSection());
|
|
EmitAlignment(2);
|
|
for (unsigned i = 0, e = Stubs.size(); i != e; ++i) {
|
|
Stubs[i].first->print(O, MAI);
|
|
O << ":\n\t.indirect_symbol ";
|
|
Stubs[i].second->print(O, MAI);
|
|
O << "\n\t.long\t0\n";
|
|
}
|
|
}
|
|
|
|
Stubs = MMIMacho.GetHiddenGVStubList();
|
|
if (!Stubs.empty()) {
|
|
OutStreamer.SwitchSection(getObjFileLowering().getDataSection());
|
|
EmitAlignment(2);
|
|
for (unsigned i = 0, e = Stubs.size(); i != e; ++i) {
|
|
Stubs[i].first->print(O, MAI);
|
|
O << ":\n\t.long ";
|
|
Stubs[i].second->print(O, MAI);
|
|
O << "\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.
|
|
OutStreamer.EmitAssemblerFlag(MCStreamer::SubsectionsViaSymbols);
|
|
}
|
|
}
|
|
|
|
//===----------------------------------------------------------------------===//
|
|
|
|
void ARMAsmPrinter::printInstructionThroughMCStreamer(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 TargetInstrInfo::DBG_LABEL:
|
|
case TargetInstrInfo::EH_LABEL:
|
|
case TargetInstrInfo::GC_LABEL:
|
|
printLabel(MI);
|
|
return;
|
|
case TargetInstrInfo::KILL:
|
|
printKill(MI);
|
|
return;
|
|
case TargetInstrInfo::INLINEASM:
|
|
printInlineAsm(MI);
|
|
return;
|
|
case TargetInstrInfo::IMPLICIT_DEF:
|
|
printImplicitDef(MI);
|
|
return;
|
|
case ARM::PICADD: { // FIXME: Remove asm string from td file.
|
|
// This is a pseudo op for a label + instruction sequence, which looks like:
|
|
// LPC0:
|
|
// add r0, pc, r0
|
|
// This adds the address of LPC0 to r0.
|
|
|
|
// Emit the label.
|
|
// FIXME: MOVE TO SHARED PLACE.
|
|
unsigned Id = (unsigned)MI->getOperand(2).getImm();
|
|
const char *Prefix = MAI->getPrivateGlobalPrefix();
|
|
MCSymbol *Label =OutContext.GetOrCreateSymbol(Twine(Prefix)
|
|
+ "PC" + Twine(getFunctionNumber()) + "_" + Twine(Id));
|
|
OutStreamer.EmitLabel(Label);
|
|
|
|
|
|
// Form and emit tha dd.
|
|
MCInst AddInst;
|
|
AddInst.setOpcode(ARM::ADDrr);
|
|
AddInst.addOperand(MCOperand::CreateReg(MI->getOperand(0).getReg()));
|
|
AddInst.addOperand(MCOperand::CreateReg(ARM::PC));
|
|
AddInst.addOperand(MCOperand::CreateReg(MI->getOperand(1).getReg()));
|
|
printMCInst(&AddInst);
|
|
return;
|
|
}
|
|
case ARM::CONSTPOOL_ENTRY: { // FIXME: Remove asm string from td file.
|
|
/// 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
|
|
/// is the size in bytes of this constant pool entry.
|
|
unsigned LabelId = (unsigned)MI->getOperand(0).getImm();
|
|
unsigned CPIdx = (unsigned)MI->getOperand(1).getIndex();
|
|
|
|
EmitAlignment(2);
|
|
|
|
const char *Prefix = MAI->getPrivateGlobalPrefix();
|
|
MCSymbol *Label = OutContext.GetOrCreateSymbol(Twine(Prefix)+"CPI"+
|
|
Twine(getFunctionNumber())+
|
|
"_"+ Twine(LabelId));
|
|
OutStreamer.EmitLabel(Label);
|
|
|
|
const MachineConstantPoolEntry &MCPE = MCP->getConstants()[CPIdx];
|
|
if (MCPE.isMachineConstantPoolEntry())
|
|
EmitMachineConstantPoolValue(MCPE.Val.MachineCPVal);
|
|
else
|
|
EmitGlobalConstant(MCPE.Val.ConstVal);
|
|
|
|
return;
|
|
}
|
|
case ARM::MOVi2pieces: { // FIXME: Remove asmstring from td file.
|
|
// This is a hack that lowers as a two instruction sequence.
|
|
unsigned DstReg = MI->getOperand(0).getReg();
|
|
unsigned ImmVal = (unsigned)MI->getOperand(1).getImm();
|
|
|
|
unsigned SOImmValV1 = ARM_AM::getSOImmTwoPartFirst(ImmVal);
|
|
unsigned SOImmValV2 = ARM_AM::getSOImmTwoPartSecond(ImmVal);
|
|
|
|
{
|
|
MCInst TmpInst;
|
|
TmpInst.setOpcode(ARM::MOVi);
|
|
TmpInst.addOperand(MCOperand::CreateReg(DstReg));
|
|
TmpInst.addOperand(MCOperand::CreateImm(SOImmValV1));
|
|
|
|
// Predicate.
|
|
TmpInst.addOperand(MCOperand::CreateImm(MI->getOperand(2).getImm()));
|
|
TmpInst.addOperand(MCOperand::CreateReg(MI->getOperand(3).getReg()));
|
|
|
|
TmpInst.addOperand(MCOperand::CreateReg(0)); // cc_out
|
|
printMCInst(&TmpInst);
|
|
O << '\n';
|
|
}
|
|
|
|
{
|
|
MCInst TmpInst;
|
|
TmpInst.setOpcode(ARM::ORRri);
|
|
TmpInst.addOperand(MCOperand::CreateReg(DstReg)); // dstreg
|
|
TmpInst.addOperand(MCOperand::CreateReg(DstReg)); // inreg
|
|
TmpInst.addOperand(MCOperand::CreateImm(SOImmValV2)); // so_imm
|
|
// Predicate.
|
|
TmpInst.addOperand(MCOperand::CreateImm(MI->getOperand(2).getImm()));
|
|
TmpInst.addOperand(MCOperand::CreateReg(MI->getOperand(3).getReg()));
|
|
|
|
TmpInst.addOperand(MCOperand::CreateReg(0)); // cc_out
|
|
printMCInst(&TmpInst);
|
|
}
|
|
return;
|
|
}
|
|
case ARM::MOVi32imm: { // FIXME: Remove asmstring from td file.
|
|
// This is a hack that lowers as a two instruction sequence.
|
|
unsigned DstReg = MI->getOperand(0).getReg();
|
|
unsigned ImmVal = (unsigned)MI->getOperand(1).getImm();
|
|
|
|
{
|
|
MCInst TmpInst;
|
|
TmpInst.setOpcode(ARM::MOVi16);
|
|
TmpInst.addOperand(MCOperand::CreateReg(DstReg)); // dstreg
|
|
TmpInst.addOperand(MCOperand::CreateImm(ImmVal & 65535)); // lower16(imm)
|
|
|
|
// Predicate.
|
|
TmpInst.addOperand(MCOperand::CreateImm(MI->getOperand(2).getImm()));
|
|
TmpInst.addOperand(MCOperand::CreateReg(MI->getOperand(3).getReg()));
|
|
|
|
printMCInst(&TmpInst);
|
|
O << '\n';
|
|
}
|
|
|
|
{
|
|
MCInst TmpInst;
|
|
TmpInst.setOpcode(ARM::MOVTi16);
|
|
TmpInst.addOperand(MCOperand::CreateReg(DstReg)); // dstreg
|
|
TmpInst.addOperand(MCOperand::CreateReg(DstReg)); // srcreg
|
|
TmpInst.addOperand(MCOperand::CreateImm(ImmVal >> 16)); // upper16(imm)
|
|
|
|
// Predicate.
|
|
TmpInst.addOperand(MCOperand::CreateImm(MI->getOperand(2).getImm()));
|
|
TmpInst.addOperand(MCOperand::CreateReg(MI->getOperand(3).getReg()));
|
|
|
|
printMCInst(&TmpInst);
|
|
}
|
|
|
|
return;
|
|
}
|
|
}
|
|
|
|
MCInst TmpInst;
|
|
MCInstLowering.Lower(MI, TmpInst);
|
|
|
|
printMCInst(&TmpInst);
|
|
}
|
|
|
|
//===----------------------------------------------------------------------===//
|
|
// Target Registry Stuff
|
|
//===----------------------------------------------------------------------===//
|
|
|
|
static MCInstPrinter *createARMMCInstPrinter(const Target &T,
|
|
unsigned SyntaxVariant,
|
|
const MCAsmInfo &MAI,
|
|
raw_ostream &O) {
|
|
if (SyntaxVariant == 0)
|
|
return new ARMInstPrinter(O, MAI, false);
|
|
return 0;
|
|
}
|
|
|
|
// Force static initialization.
|
|
extern "C" void LLVMInitializeARMAsmPrinter() {
|
|
RegisterAsmPrinter<ARMAsmPrinter> X(TheARMTarget);
|
|
RegisterAsmPrinter<ARMAsmPrinter> Y(TheThumbTarget);
|
|
|
|
TargetRegistry::RegisterMCInstPrinter(TheARMTarget, createARMMCInstPrinter);
|
|
TargetRegistry::RegisterMCInstPrinter(TheThumbTarget, createARMMCInstPrinter);
|
|
}
|
|
|