summaryrefslogtreecommitdiffstats
path: root/llvm/lib/Target/ARM/ARMAsmPrinter.cpp
diff options
context:
space:
mode:
Diffstat (limited to 'llvm/lib/Target/ARM/ARMAsmPrinter.cpp')
-rw-r--r--llvm/lib/Target/ARM/ARMAsmPrinter.cpp1030
1 files changed, 0 insertions, 1030 deletions
diff --git a/llvm/lib/Target/ARM/ARMAsmPrinter.cpp b/llvm/lib/Target/ARM/ARMAsmPrinter.cpp
deleted file mode 100644
index 89b0a8a77e8..00000000000
--- a/llvm/lib/Target/ARM/ARMAsmPrinter.cpp
+++ /dev/null
@@ -1,1030 +0,0 @@
-//===-- ARMAsmPrinter.cpp - ARM LLVM assembly writer ----------------------===//
-//
-// The LLVM Compiler Infrastructure
-//
-// This file is distributed under the University of Illinois Open Source
-// License. See LICENSE.TXT for details.
-//
-//===----------------------------------------------------------------------===//
-//
-// This file contains a printer that converts from our internal representation
-// of machine-dependent LLVM code to GAS-format ARM assembly language.
-//
-//===----------------------------------------------------------------------===//
-
-#define DEBUG_TYPE "asm-printer"
-#include "ARM.h"
-#include "ARMTargetMachine.h"
-#include "ARMAddressingModes.h"
-#include "ARMConstantPoolValue.h"
-#include "ARMMachineFunctionInfo.h"
-#include "llvm/Constants.h"
-#include "llvm/Module.h"
-#include "llvm/CodeGen/AsmPrinter.h"
-#include "llvm/CodeGen/DwarfWriter.h"
-#include "llvm/CodeGen/MachineModuleInfo.h"
-#include "llvm/CodeGen/MachineFunctionPass.h"
-#include "llvm/CodeGen/MachineJumpTableInfo.h"
-#include "llvm/Target/TargetAsmInfo.h"
-#include "llvm/Target/TargetData.h"
-#include "llvm/Target/TargetMachine.h"
-#include "llvm/Target/TargetOptions.h"
-#include "llvm/ADT/SmallPtrSet.h"
-#include "llvm/ADT/Statistic.h"
-#include "llvm/ADT/StringExtras.h"
-#include "llvm/Support/Compiler.h"
-#include "llvm/Support/Mangler.h"
-#include "llvm/Support/MathExtras.h"
-#include <cctype>
-using namespace llvm;
-
-STATISTIC(EmittedInsts, "Number of machine instrs printed");
-
-namespace {
- struct VISIBILITY_HIDDEN ARMAsmPrinter : public AsmPrinter {
- ARMAsmPrinter(std::ostream &O, TargetMachine &TM, const TargetAsmInfo *T)
- : AsmPrinter(O, TM, T), DW(O, this, T), MMI(NULL), AFI(NULL),
- InCPMode(false) {
- Subtarget = &TM.getSubtarget<ARMSubtarget>();
- }
-
- DwarfWriter DW;
- MachineModuleInfo *MMI;
-
- /// Subtarget - Keep a pointer to the ARMSubtarget around so that we can
- /// make the right decision when printing asm code for different targets.
- const ARMSubtarget *Subtarget;
-
- /// AFI - Keep a pointer to ARMFunctionInfo for the current
- /// MachineFunction
- ARMFunctionInfo *AFI;
-
- /// We name each basic block in a Function with a unique number, so
- /// that we can consistently refer to them later. This is cleared
- /// at the beginning of each call to runOnMachineFunction().
- ///
- typedef std::map<const Value *, unsigned> ValueMapTy;
- ValueMapTy NumberForBB;
-
- /// GVNonLazyPtrs - Keeps the set of GlobalValues that require
- /// non-lazy-pointers for indirect access.
- std::set<std::string> GVNonLazyPtrs;
-
- /// FnStubs - Keeps the set of external function GlobalAddresses that the
- /// asm printer should generate stubs for.
- std::set<std::string> FnStubs;
-
- /// PCRelGVs - Keeps the set of GlobalValues used in pc relative
- /// constantpool.
- SmallPtrSet<const GlobalValue*, 8> PCRelGVs;
-
- /// True if asm printer is printing a series of CONSTPOOL_ENTRY.
- bool InCPMode;
-
- virtual const char *getPassName() const {
- return "ARM Assembly Printer";
- }
-
- void printOperand(const MachineInstr *MI, int opNum,
- const char *Modifier = 0);
- void printSOImmOperand(const MachineInstr *MI, int opNum);
- void printSOImm2PartOperand(const MachineInstr *MI, int opNum);
- void printSORegOperand(const MachineInstr *MI, int opNum);
- void printAddrMode2Operand(const MachineInstr *MI, int OpNo);
- void printAddrMode2OffsetOperand(const MachineInstr *MI, int OpNo);
- void printAddrMode3Operand(const MachineInstr *MI, int OpNo);
- void printAddrMode3OffsetOperand(const MachineInstr *MI, int OpNo);
- void printAddrMode4Operand(const MachineInstr *MI, int OpNo,
- const char *Modifier = 0);
- void printAddrMode5Operand(const MachineInstr *MI, int OpNo,
- const char *Modifier = 0);
- void printAddrModePCOperand(const MachineInstr *MI, int OpNo,
- const char *Modifier = 0);
- void printThumbAddrModeRROperand(const MachineInstr *MI, int OpNo);
- void printThumbAddrModeRI5Operand(const MachineInstr *MI, int OpNo,
- unsigned Scale);
- void printThumbAddrModeS1Operand(const MachineInstr *MI, int OpNo);
- void printThumbAddrModeS2Operand(const MachineInstr *MI, int OpNo);
- void printThumbAddrModeS4Operand(const MachineInstr *MI, int OpNo);
- void printThumbAddrModeSPOperand(const MachineInstr *MI, int OpNo);
- void printPredicateOperand(const MachineInstr *MI, int opNum);
- void printSBitModifierOperand(const MachineInstr *MI, int opNum);
- void printPCLabel(const MachineInstr *MI, int opNum);
- void printRegisterList(const MachineInstr *MI, int opNum);
- void printCPInstOperand(const MachineInstr *MI, int opNum,
- const char *Modifier);
- void printJTBlockOperand(const MachineInstr *MI, int opNum);
-
- virtual bool PrintAsmOperand(const MachineInstr *MI, unsigned OpNo,
- unsigned AsmVariant, const char *ExtraCode);
-
- void printModuleLevelGV(const GlobalVariable* GVar);
- bool printInstruction(const MachineInstr *MI); // autogenerated.
- void printMachineInstruction(const MachineInstr *MI);
- bool runOnMachineFunction(MachineFunction &F);
- bool doInitialization(Module &M);
- bool doFinalization(Module &M);
-
- /// getSectionForFunction - Return the section that we should emit the
- /// specified function body into.
- virtual std::string getSectionForFunction(const Function &F) const;
-
- /// EmitMachineConstantPoolValue - Print a machine constantpool value to
- /// the .s file.
- virtual void EmitMachineConstantPoolValue(MachineConstantPoolValue *MCPV) {
- printDataDirective(MCPV->getType());
-
- ARMConstantPoolValue *ACPV = static_cast<ARMConstantPoolValue*>(MCPV);
- GlobalValue *GV = ACPV->getGV();
- std::string Name = GV ? Mang->getValueName(GV) : TAI->getGlobalPrefix();
- if (!GV)
- Name += ACPV->getSymbol();
- if (ACPV->isNonLazyPointer()) {
- GVNonLazyPtrs.insert(Name);
- printSuffixedName(Name, "$non_lazy_ptr");
- } else if (ACPV->isStub()) {
- FnStubs.insert(Name);
- printSuffixedName(Name, "$stub");
- } else
- O << Name;
- if (ACPV->hasModifier()) O << "(" << ACPV->getModifier() << ")";
- if (ACPV->getPCAdjustment() != 0) {
- O << "-(" << TAI->getPrivateGlobalPrefix() << "PC"
- << utostr(ACPV->getLabelId())
- << "+" << (unsigned)ACPV->getPCAdjustment();
- if (ACPV->mustAddCurrentAddress())
- O << "-.";
- O << ")";
- }
- O << "\n";
-
- // If the constant pool value is a extern weak symbol, remember to emit
- // the weak reference.
- if (GV && GV->hasExternalWeakLinkage())
- ExtWeakSymbols.insert(GV);
- }
-
- void getAnalysisUsage(AnalysisUsage &AU) const {
- AsmPrinter::getAnalysisUsage(AU);
- AU.setPreservesAll();
- AU.addRequired<MachineModuleInfo>();
- }
- };
-} // end of anonymous namespace
-
-#include "ARMGenAsmWriter.inc"
-
-/// createARMCodePrinterPass - Returns a pass that prints the ARM
-/// assembly code for a MachineFunction to the given output stream,
-/// using the given target machine description. This should work
-/// regardless of whether the function is in SSA form.
-///
-FunctionPass *llvm::createARMCodePrinterPass(std::ostream &o,
- ARMTargetMachine &tm) {
- return new ARMAsmPrinter(o, tm, tm.getTargetAsmInfo());
-}
-
-// Substitute old hook with new one temporary
-std::string ARMAsmPrinter::getSectionForFunction(const Function &F) const {
- return TAI->SectionForGlobal(&F);
-}
-
-/// runOnMachineFunction - This uses the printInstruction()
-/// method to print assembly for each instruction.
-///
-bool ARMAsmPrinter::runOnMachineFunction(MachineFunction &MF) {
- AFI = MF.getInfo<ARMFunctionInfo>();
-
- SetupMachineFunction(MF);
- O << "\n";
-
- // NOTE: we don't print out constant pools here, they are handled as
- // instructions.
-
- O << "\n";
- // Print out labels for the function.
- const Function *F = MF.getFunction();
- switch (F->getLinkage()) {
- default: assert(0 && "Unknown linkage type!");
- case Function::InternalLinkage:
- SwitchToTextSection("\t.text", F);
- break;
- case Function::ExternalLinkage:
- SwitchToTextSection("\t.text", F);
- O << "\t.globl\t" << CurrentFnName << "\n";
- break;
- case Function::WeakLinkage:
- case Function::LinkOnceLinkage:
- if (Subtarget->isTargetDarwin()) {
- SwitchToTextSection(
- ".section __TEXT,__textcoal_nt,coalesced,pure_instructions", F);
- O << "\t.globl\t" << CurrentFnName << "\n";
- O << "\t.weak_definition\t" << CurrentFnName << "\n";
- } else {
- O << TAI->getWeakRefDirective() << CurrentFnName << "\n";
- }
- break;
- }
-
- printVisibility(CurrentFnName, F->getVisibility());
-
- if (AFI->isThumbFunction()) {
- EmitAlignment(1, F, AFI->getAlign());
- O << "\t.code\t16\n";
- O << "\t.thumb_func";
- if (Subtarget->isTargetDarwin())
- O << "\t" << CurrentFnName;
- O << "\n";
- InCPMode = false;
- } else
- EmitAlignment(2, F);
-
- O << CurrentFnName << ":\n";
- // Emit pre-function debug information.
- DW.BeginFunction(&MF);
-
- if (Subtarget->isTargetDarwin()) {
- // If the function is empty, then we need to emit *something*. Otherwise,
- // the function's label might be associated with something that it wasn't
- // meant to be associated with. We emit a noop in this situation.
- MachineFunction::iterator I = MF.begin();
-
- if (++I == MF.end() && MF.front().empty())
- O << "\tnop\n";
- }
-
- // Print out code for the function.
- for (MachineFunction::const_iterator I = MF.begin(), E = MF.end();
- I != E; ++I) {
- // Print a label for the basic block.
- if (I != MF.begin()) {
- printBasicBlockLabel(I, true, true);
- O << '\n';
- }
- for (MachineBasicBlock::const_iterator II = I->begin(), E = I->end();
- II != E; ++II) {
- // Print the assembly for the instruction.
- printMachineInstruction(II);
- }
- }
-
- if (TAI->hasDotTypeDotSizeDirective())
- O << "\t.size " << CurrentFnName << ", .-" << CurrentFnName << "\n";
-
- // Emit post-function debug information.
- DW.EndFunction();
-
- return false;
-}
-
-void ARMAsmPrinter::printOperand(const MachineInstr *MI, int opNum,
- const char *Modifier) {
- const MachineOperand &MO = MI->getOperand(opNum);
- switch (MO.getType()) {
- case MachineOperand::MO_Register:
- if (TargetRegisterInfo::isPhysicalRegister(MO.getReg()))
- O << TM.getRegisterInfo()->get(MO.getReg()).AsmName;
- else
- assert(0 && "not implemented");
- break;
- case MachineOperand::MO_Immediate: {
- if (!Modifier || strcmp(Modifier, "no_hash") != 0)
- O << "#";
-
- O << (int)MO.getImm();
- break;
- }
- case MachineOperand::MO_MachineBasicBlock:
- printBasicBlockLabel(MO.getMBB());
- return;
- case MachineOperand::MO_GlobalAddress: {
- bool isCallOp = Modifier && !strcmp(Modifier, "call");
- GlobalValue *GV = MO.getGlobal();
- std::string Name = Mang->getValueName(GV);
- bool isExt = (GV->isDeclaration() || GV->hasWeakLinkage() ||
- GV->hasLinkOnceLinkage());
- if (isExt && isCallOp && Subtarget->isTargetDarwin() &&
- TM.getRelocationModel() != Reloc::Static) {
- printSuffixedName(Name, "$stub");
- FnStubs.insert(Name);
- } else
- O << Name;
-
- if (MO.getOffset() > 0)
- O << '+' << MO.getOffset();
- else if (MO.getOffset() < 0)
- O << MO.getOffset();
-
- if (isCallOp && Subtarget->isTargetELF() &&
- TM.getRelocationModel() == Reloc::PIC_)
- O << "(PLT)";
- if (GV->hasExternalWeakLinkage())
- ExtWeakSymbols.insert(GV);
- break;
- }
- case MachineOperand::MO_ExternalSymbol: {
- bool isCallOp = Modifier && !strcmp(Modifier, "call");
- std::string Name(TAI->getGlobalPrefix());
- Name += MO.getSymbolName();
- if (isCallOp && Subtarget->isTargetDarwin() &&
- TM.getRelocationModel() != Reloc::Static) {
- printSuffixedName(Name, "$stub");
- FnStubs.insert(Name);
- } else
- O << Name;
- if (isCallOp && Subtarget->isTargetELF() &&
- TM.getRelocationModel() == Reloc::PIC_)
- O << "(PLT)";
- break;
- }
- case MachineOperand::MO_ConstantPoolIndex:
- O << TAI->getPrivateGlobalPrefix() << "CPI" << getFunctionNumber()
- << '_' << MO.getIndex();
- break;
- case MachineOperand::MO_JumpTableIndex:
- O << TAI->getPrivateGlobalPrefix() << "JTI" << getFunctionNumber()
- << '_' << MO.getIndex();
- break;
- default:
- O << "<unknown operand type>"; abort (); break;
- }
-}
-
-static void printSOImm(std::ostream &O, int64_t V, const TargetAsmInfo *TAI) {
- assert(V < (1 << 12) && "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.
- O << ' ' << TAI->getCommentString() << ' ' << (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) {
- const MachineOperand &MO = MI->getOperand(OpNum);
- assert(MO.isImmediate() && "Not a valid so_imm value!");
- printSOImm(O, MO.getImm(), TAI);
-}
-
-/// printSOImm2PartOperand - SOImm is broken into two pieces using a mov
-/// followed by a or to materialize.
-void ARMAsmPrinter::printSOImm2PartOperand(const MachineInstr *MI, int OpNum) {
- const MachineOperand &MO = MI->getOperand(OpNum);
- assert(MO.isImmediate() && "Not a valid so_imm value!");
- unsigned V1 = ARM_AM::getSOImmTwoPartFirst(MO.getImm());
- unsigned V2 = ARM_AM::getSOImmTwoPartSecond(MO.getImm());
- printSOImm(O, ARM_AM::getSOImmVal(V1), TAI);
- O << "\n\torr";
- printPredicateOperand(MI, 2);
- O << " ";
- printOperand(MI, 0);
- O << ", ";
- printOperand(MI, 0);
- O << ", ";
- printSOImm(O, ARM_AM::getSOImmVal(V2), TAI);
-}
-
-// 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);
-
- assert(TargetRegisterInfo::isPhysicalRegister(MO1.getReg()));
- O << TM.getRegisterInfo()->get(MO1.getReg()).AsmName;
-
- // Print the shift opc.
- O << ", "
- << ARM_AM::getShiftOpcStr(ARM_AM::getSORegShOp(MO3.getImm()))
- << " ";
-
- if (MO2.getReg()) {
- assert(TargetRegisterInfo::isPhysicalRegister(MO2.getReg()));
- O << TM.getRegisterInfo()->get(MO2.getReg()).AsmName;
- 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.isRegister()) { // FIXME: This is for CP entries, but isn't right.
- printOperand(MI, Op);
- return;
- }
-
- O << "[" << TM.getRegisterInfo()->get(MO1.getReg()).AsmName;
-
- 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())
- << TM.getRegisterInfo()->get(MO2.getReg()).AsmName;
-
- 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())
- << TM.getRegisterInfo()->get(MO1.getReg()).AsmName;
-
- 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 << "[" << TM.getRegisterInfo()->get(MO1.getReg()).AsmName;
-
- if (MO2.getReg()) {
- O << ", "
- << (char)ARM_AM::getAM3Op(MO3.getImm())
- << TM.getRegisterInfo()->get(MO2.getReg()).AsmName
- << "]";
- 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())
- << TM.getRegisterInfo()->get(MO1.getReg()).AsmName;
- 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) {
- bool isLDM = (MI->getOpcode() == ARM::LDM ||
- MI->getOpcode() == ARM::LDM_RET);
- O << ARM_AM::getAMSubModeAltStr(Mode, isLDM);
- } else
- O << ARM_AM::getAMSubModeStr(Mode);
- } 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.isRegister()) { // 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 << TM.getRegisterInfo()->get(MO1.getReg()).AsmName;
- if (ARM_AM::getAM5WBFlag(MO2.getImm()))
- O << "!";
- return;
- }
-
- O << "[" << TM.getRegisterInfo()->get(MO1.getReg()).AsmName;
-
- if (unsigned ImmOffs = ARM_AM::getAM5Offset(MO2.getImm())) {
- O << ", #"
- << (char)ARM_AM::getAM5Op(MO2.getImm())
- << ImmOffs*4;
- }
- O << "]";
-}
-
-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, +" << TM.getRegisterInfo()->get(MO1.getReg()).AsmName << "]";
-}
-
-void
-ARMAsmPrinter::printThumbAddrModeRROperand(const MachineInstr *MI, int Op) {
- const MachineOperand &MO1 = MI->getOperand(Op);
- const MachineOperand &MO2 = MI->getOperand(Op+1);
- O << "[" << TM.getRegisterInfo()->get(MO1.getReg()).AsmName;
- O << ", " << TM.getRegisterInfo()->get(MO2.getReg()).AsmName << "]";
-}
-
-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.isRegister()) { // FIXME: This is for CP entries, but isn't right.
- printOperand(MI, Op);
- return;
- }
-
- O << "[" << TM.getRegisterInfo()->get(MO1.getReg()).AsmName;
- if (MO3.getReg())
- O << ", " << TM.getRegisterInfo()->get(MO3.getReg()).AsmName;
- 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 << "[" << TM.getRegisterInfo()->get(MO1.getReg()).AsmName;
- if (unsigned ImmOffs = MO2.getImm())
- O << ", #" << ImmOffs << " * 4";
- 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 << TAI->getPrivateGlobalPrefix() << "PC" << Id;
-}
-
-void ARMAsmPrinter::printRegisterList(const MachineInstr *MI, int opNum) {
- O << "{";
- for (unsigned i = opNum, e = MI->getNumOperands(); i != e; ++i) {
- printOperand(MI, i);
- if (i != e-1) O << ", ";
- }
- O << "}";
-}
-
-void ARMAsmPrinter::printCPInstOperand(const MachineInstr *MI, int OpNo,
- 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(OpNo).getImm();
- O << TAI->getPrivateGlobalPrefix() << "CPI" << getFunctionNumber()
- << '_' << ID << ":\n";
- } else {
- assert(!strcmp(Modifier, "cpentry") && "Unknown modifier for CPE");
- unsigned CPI = MI->getOperand(OpNo).getIndex();
-
- const MachineConstantPoolEntry &MCPE = // Chasing pointers is fun?
- MI->getParent()->getParent()->getConstantPool()->getConstants()[CPI];
-
- if (MCPE.isMachineConstantPoolEntry()) {
- EmitMachineConstantPoolValue(MCPE.Val.MachineCPVal);
- ARMConstantPoolValue *ACPV =
- static_cast<ARMConstantPoolValue*>(MCPE.Val.MachineCPVal);
- if (ACPV->getPCAdjustment() != 0) {
- const GlobalValue *GV = ACPV->getGV();
- PCRelGVs.insert(GV);
- }
- } else {
- EmitGlobalConstant(MCPE.Val.ConstVal);
- // remember to emit the weak reference
- if (const GlobalValue *GV = dyn_cast<GlobalValue>(MCPE.Val.ConstVal))
- if (GV->hasExternalWeakLinkage())
- ExtWeakSymbols.insert(GV);
- }
- }
-}
-
-void ARMAsmPrinter::printJTBlockOperand(const MachineInstr *MI, int OpNo) {
- const MachineOperand &MO1 = MI->getOperand(OpNo);
- const MachineOperand &MO2 = MI->getOperand(OpNo+1); // Unique Id
- unsigned JTI = MO1.getIndex();
- O << TAI->getPrivateGlobalPrefix() << "JTI" << getFunctionNumber()
- << '_' << JTI << '_' << MO2.getImm() << ":\n";
-
- const char *JTEntryDirective = TAI->getJumpTableDirective();
- if (!JTEntryDirective)
- JTEntryDirective = TAI->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= TAI->getSetDirective() && TM.getRelocationModel() == Reloc::PIC_;
- std::set<MachineBasicBlock*> JTSets;
- for (unsigned i = 0, e = JTBBs.size(); i != e; ++i) {
- MachineBasicBlock *MBB = JTBBs[i];
- if (UseSet && JTSets.insert(MBB).second)
- printPICJumpTableSetLabel(JTI, MO2.getImm(), MBB);
-
- O << JTEntryDirective << ' ';
- if (UseSet)
- O << TAI->getPrivateGlobalPrefix() << getFunctionNumber()
- << '_' << JTI << '_' << MO2.getImm()
- << "_set_" << MBB->getNumber();
- else if (TM.getRelocationModel() == Reloc::PIC_) {
- printBasicBlockLabel(MBB, false, false, false);
- // If the arch uses custom Jump Table directives, don't calc relative to JT
- if (!TAI->getJumpTableDirective())
- O << '-' << TAI->getPrivateGlobalPrefix() << "JTI"
- << getFunctionNumber() << '_' << JTI << '_' << MO2.getImm();
- } else
- printBasicBlockLabel(MBB, false, false, false);
- if (i != e-1)
- O << '\n';
- }
-}
-
-
-bool ARMAsmPrinter::PrintAsmOperand(const MachineInstr *MI, unsigned OpNo,
- unsigned AsmVariant, const char *ExtraCode){
- // Does this asm operand have a single letter operand modifier?
- if (ExtraCode && ExtraCode[0]) {
- if (ExtraCode[1] != 0) return true; // Unknown modifier.
-
- switch (ExtraCode[0]) {
- default: return true; // Unknown modifier.
- case 'c': // Don't print "$" before a global var name or constant.
- case 'P': // Print a VFP double precision register.
- printOperand(MI, OpNo);
- 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(OpNo).isRegister() ||
- OpNo+1 == MI->getNumOperands() ||
- !MI->getOperand(OpNo+1).isRegister())
- return true;
- ++OpNo; // Return the high-part.
- }
- }
-
- printOperand(MI, OpNo);
- return false;
-}
-
-void ARMAsmPrinter::printMachineInstruction(const MachineInstr *MI) {
- ++EmittedInsts;
-
- int Opc = MI->getOpcode();
- switch (Opc) {
- case ARM::CONSTPOOL_ENTRY:
- if (!InCPMode && AFI->isThumbFunction()) {
- EmitAlignment(2);
- InCPMode = true;
- }
- break;
- default: {
- if (InCPMode && AFI->isThumbFunction())
- InCPMode = false;
- switch (Opc) {
- case ARM::PICADD:
- case ARM::PICLD:
- case ARM::PICLDZH:
- case ARM::PICLDZB:
- case ARM::PICLDH:
- case ARM::PICLDB:
- case ARM::PICLDSH:
- case ARM::PICLDSB:
- case ARM::PICSTR:
- case ARM::PICSTRH:
- case ARM::PICSTRB:
- case ARM::tPICADD:
- break;
- default:
- break;
- }
- }}
-
- // Call the autogenerated instruction printer routines.
- printInstruction(MI);
-}
-
-bool ARMAsmPrinter::doInitialization(Module &M) {
- // Emit initial debug information.
- DW.BeginModule(&M);
-
- bool Result = AsmPrinter::doInitialization(M);
-
- // AsmPrinter::doInitialization should have done this analysis.
- MMI = getAnalysisToUpdate<MachineModuleInfo>();
- assert(MMI);
- DW.SetModuleInfo(MMI);
-
- // Darwin wants symbols to be quoted if they have complex names.
- if (Subtarget->isTargetDarwin())
- Mang->setUseQuotes(true);
-
- return Result;
-}
-
-/// PrintUnmangledNameSafely - Print out the printable characters in the name.
-/// Don't print things like \n or \0.
-static void PrintUnmangledNameSafely(const Value *V, std::ostream &OS) {
- for (const char *Name = V->getNameStart(), *E = Name+V->getNameLen();
- Name != E; ++Name)
- if (isprint(*Name))
- OS << *Name;
-}
-
-void ARMAsmPrinter::printModuleLevelGV(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 SectionName = TAI->SectionForGlobal(GVar);
- std::string name = Mang->getValueName(GVar);
- Constant *C = GVar->getInitializer();
- const Type *Type = C->getType();
- unsigned Size = TD->getABITypeSize(Type);
- unsigned Align = TD->getPreferredAlignmentLog(GVar);
-
- printVisibility(name, GVar->getVisibility());
-
- if (Subtarget->isTargetELF())
- O << "\t.type " << name << ",%object\n";
-
- SwitchToDataSection(SectionName.c_str());
-
- if (C->isNullValue() && !GVar->hasSection() && !GVar->isThreadLocal()) {
- // FIXME: This seems to be pretty darwin-specific
-
- if (GVar->hasExternalLinkage()) {
- if (const char *Directive = TAI->getZeroFillDirective()) {
- O << "\t.globl\t" << name << "\n";
- O << Directive << "__DATA, __common, " << name << ", "
- << Size << ", " << Align << "\n";
- return;
- }
- }
-
- if (GVar->hasInternalLinkage() || GVar->isWeakForLinker()) {
- if (Size == 0) Size = 1; // .comm Foo, 0 is undefined, avoid it.
-
- if (TAI->getLCOMMDirective() != NULL) {
- if (PCRelGVs.count(GVar) || GVar->hasInternalLinkage()) {
- O << TAI->getLCOMMDirective() << name << "," << Size;
- if (Subtarget->isTargetDarwin())
- O << "," << Align;
- } else
- O << TAI->getCOMMDirective() << name << "," << Size;
- } else {
- if (GVar->hasInternalLinkage())
- O << "\t.local\t" << name << "\n";
- O << TAI->getCOMMDirective() << name << "," << Size;
- if (TAI->getCOMMDirectiveTakesAlignment())
- O << "," << (TAI->getAlignmentIsInBytes() ? (1 << Align) : Align);
- }
- O << "\t\t" << TAI->getCommentString() << " ";
- PrintUnmangledNameSafely(GVar, O);
- O << "\n";
- return;
- }
- }
-
- switch (GVar->getLinkage()) {
- case GlobalValue::LinkOnceLinkage:
- case GlobalValue::WeakLinkage:
- if (Subtarget->isTargetDarwin()) {
- 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";
- // FALL THROUGH
- case GlobalValue::InternalLinkage:
- break;
- default:
- assert(0 && "Unknown linkage type!");
- break;
- }
-
- EmitAlignment(Align, GVar);
- O << name << ":\t\t\t\t" << TAI->getCommentString() << " ";
- PrintUnmangledNameSafely(GVar, O);
- O << "\n";
- if (TAI->hasDotTypeDotSizeDirective())
- O << "\t.size " << name << ", " << Size << "\n";
-
- // If the initializer is a extern weak symbol, remember to emit the weak
- // reference!
- if (const GlobalValue *GV = dyn_cast<GlobalValue>(C))
- if (GV->hasExternalWeakLinkage())
- ExtWeakSymbols.insert(GV);
-
- EmitGlobalConstant(C);
- O << '\n';
-}
-
-
-bool ARMAsmPrinter::doFinalization(Module &M) {
- for (Module::const_global_iterator I = M.global_begin(), E = M.global_end();
- I != E; ++I)
- printModuleLevelGV(I);
-
- if (Subtarget->isTargetDarwin()) {
- SwitchToDataSection("");
-
- // Output stubs for dynamically-linked functions
- unsigned j = 1;
- for (std::set<std::string>::iterator i = FnStubs.begin(), e = FnStubs.end();
- i != e; ++i, ++j) {
- if (TM.getRelocationModel() == Reloc::PIC_)
- SwitchToTextSection(".section __TEXT,__picsymbolstub4,symbol_stubs,"
- "none,16", 0);
- else
- SwitchToTextSection(".section __TEXT,__symbol_stub4,symbol_stubs,"
- "none,12", 0);
-
- EmitAlignment(2);
- O << "\t.code\t32\n";
-
- std::string p = *i;
- printSuffixedName(p, "$stub");
- O << ":\n";
- O << "\t.indirect_symbol " << *i << "\n";
- O << "\tldr ip, ";
- printSuffixedName(p, "$slp");
- O << "\n";
- if (TM.getRelocationModel() == Reloc::PIC_) {
- printSuffixedName(p, "$scv");
- O << ":\n";
- O << "\tadd ip, pc, ip\n";
- }
- O << "\tldr pc, [ip, #0]\n";
- printSuffixedName(p, "$slp");
- O << ":\n";
- O << "\t.long\t";
- printSuffixedName(p, "$lazy_ptr");
- if (TM.getRelocationModel() == Reloc::PIC_) {
- O << "-(";
- printSuffixedName(p, "$scv");
- O << "+8)\n";
- } else
- O << "\n";
- SwitchToDataSection(".lazy_symbol_pointer", 0);
- printSuffixedName(p, "$lazy_ptr");
- O << ":\n";
- O << "\t.indirect_symbol " << *i << "\n";
- O << "\t.long\tdyld_stub_binding_helper\n";
- }
- O << "\n";
-
- // Output non-lazy-pointers for external and common global variables.
- if (!GVNonLazyPtrs.empty())
- SwitchToDataSection(".non_lazy_symbol_pointer", 0);
- for (std::set<std::string>::iterator i = GVNonLazyPtrs.begin(),
- e = GVNonLazyPtrs.end(); i != e; ++i) {
- std::string p = *i;
- printSuffixedName(p, "$non_lazy_ptr");
- O << ":\n";
- O << "\t.indirect_symbol " << *i << "\n";
- O << "\t.long\t0\n";
- }
-
- // Emit initial debug information.
- DW.EndModule();
-
- // Funny Darwin hack: This flag tells the linker that no global symbols
- // contain code that falls through to other global symbols (e.g. the obvious
- // implementation of multiple entry points). If this doesn't occur, the
- // linker can safely perform dead code stripping. Since LLVM never
- // generates code that does this, it is always safe to set.
- O << "\t.subsections_via_symbols\n";
- } else {
- // Emit final debug information for ELF.
- DW.EndModule();
- }
-
- return AsmPrinter::doFinalization(M);
-}
OpenPOWER on IntegriCloud