//===----------------------------------------------------------------------===//
#define DEBUG_TYPE "mips-asm-printer"
-
#include "Mips.h"
+#include "MipsSubtarget.h"
#include "MipsInstrInfo.h"
#include "MipsTargetMachine.h"
#include "MipsMachineFunction.h"
-#include "llvm/Constants.h"
-#include "llvm/DerivedTypes.h"
-#include "llvm/Module.h"
+#include "llvm/BasicBlock.h"
+#include "llvm/Instructions.h"
#include "llvm/CodeGen/AsmPrinter.h"
#include "llvm/CodeGen/MachineFunctionPass.h"
#include "llvm/CodeGen/MachineConstantPool.h"
#include "llvm/CodeGen/MachineFrameInfo.h"
#include "llvm/CodeGen/MachineInstr.h"
-#include "llvm/Target/TargetAsmInfo.h"
+#include "llvm/MC/MCStreamer.h"
+#include "llvm/MC/MCAsmInfo.h"
+#include "llvm/MC/MCSymbol.h"
+#include "llvm/Target/Mangler.h"
#include "llvm/Target/TargetData.h"
+#include "llvm/Target/TargetLoweringObjectFile.h"
#include "llvm/Target/TargetMachine.h"
#include "llvm/Target/TargetOptions.h"
-#include "llvm/Support/Mangler.h"
-#include "llvm/ADT/Statistic.h"
+#include "llvm/Target/TargetRegistry.h"
+#include "llvm/ADT/SmallString.h"
#include "llvm/ADT/StringExtras.h"
-#include "llvm/Support/Debug.h"
-#include "llvm/Support/CommandLine.h"
-#include "llvm/Support/MathExtras.h"
-#include <cctype>
-
+#include "llvm/ADT/Twine.h"
+#include "llvm/Support/raw_ostream.h"
using namespace llvm;
-STATISTIC(EmittedInsts, "Number of machine instrs printed");
-
namespace {
- struct VISIBILITY_HIDDEN MipsAsmPrinter : public AsmPrinter {
- MipsAsmPrinter(std::ostream &O, MipsTargetMachine &TM,
- const TargetAsmInfo *T):
- AsmPrinter(O, TM, T) {}
+ class MipsAsmPrinter : public AsmPrinter {
+ const MipsSubtarget *Subtarget;
+ public:
+ explicit MipsAsmPrinter(TargetMachine &TM, MCStreamer &Streamer)
+ : AsmPrinter(TM, Streamer) {
+ Subtarget = &TM.getSubtarget<MipsSubtarget>();
+ }
virtual const char *getPassName() const {
return "Mips Assembly Printer";
}
- enum SetDirectiveFlags {
- REORDER, // enables instruction reordering.
- NOREORDER, // disables instruction reordering.
- MACRO, // enables GAS macros.
- NOMACRO // disables GAS macros.
- };
-
- void printOperand(const MachineInstr *MI, int opNum);
- void printMemOperand(const MachineInstr *MI, int opNum,
+ bool PrintAsmOperand(const MachineInstr *MI, unsigned OpNo,
+ unsigned AsmVariant, const char *ExtraCode,
+ raw_ostream &O);
+ void printOperand(const MachineInstr *MI, int opNum, raw_ostream &O);
+ void printUnsignedImm(const MachineInstr *MI, int opNum, raw_ostream &O);
+ void printMemOperand(const MachineInstr *MI, int opNum, raw_ostream &O,
const char *Modifier = 0);
+ void printFCCOperand(const MachineInstr *MI, int opNum, raw_ostream &O,
+ const char *Modifier = 0);
+ void printSavedRegsBitmask(raw_ostream &O);
+ void printHex32(unsigned int Value, raw_ostream &O);
+
+ const char *getCurrentABIString() const;
+ void emitFrameDirective();
+
+ void printInstruction(const MachineInstr *MI, raw_ostream &O); // autogen'd.
+ void EmitInstruction(const MachineInstr *MI) {
+ SmallString<128> Str;
+ raw_svector_ostream OS(Str);
+ printInstruction(MI, OS);
+ OutStreamer.EmitRawText(OS.str());
+ }
+ virtual void EmitFunctionBodyStart();
+ virtual void EmitFunctionBodyEnd();
+ virtual bool isBlockOnlyReachableByFallthrough(const MachineBasicBlock *MBB) const;
+ static const char *getRegisterName(unsigned RegNo);
- unsigned int getSavedRegsBitmask(bool isFloat, MachineFunction &MF);
- void printHex32(unsigned int Value);
-
- void emitFunctionStart(MachineFunction &MF);
- void emitFunctionEnd(MachineFunction &MF);
- void emitFrameDirective(MachineFunction &MF);
- void emitMaskDirective(MachineFunction &MF);
- void emitFMaskDirective(MachineFunction &MF);
- void emitSetDirective(SetDirectiveFlags Flag);
-
- bool printInstruction(const MachineInstr *MI); // autogenerated.
- bool runOnMachineFunction(MachineFunction &F);
- bool doInitialization(Module &M);
- bool doFinalization(Module &M);
+ virtual void EmitFunctionEntryLabel();
+ void EmitStartOfAsmFile(Module &M);
};
} // end of anonymous namespace
#include "MipsGenAsmWriter.inc"
-/// createMipsCodePrinterPass - Returns a pass that prints the MIPS
-/// 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::createMipsCodePrinterPass(std::ostream &o,
- MipsTargetMachine &tm)
-{
- return new MipsAsmPrinter(o, tm, tm.getTargetAsmInfo());
-}
-
//===----------------------------------------------------------------------===//
//
// Mips Asm Directives
//
//===----------------------------------------------------------------------===//
-/// Mask directive for GPR
-void MipsAsmPrinter::
-emitMaskDirective(MachineFunction &MF)
-{
- MipsFunctionInfo *MipsFI = MF.getInfo<MipsFunctionInfo>();
-
- int StackSize = MF.getFrameInfo()->getStackSize();
- int Offset = (!MipsFI->getTopSavedRegOffset()) ? 0 :
- (-(StackSize-MipsFI->getTopSavedRegOffset()));
-
- #ifndef NDEBUG
- DOUT << "--> emitMaskDirective" << "\n";
- DOUT << "StackSize : " << StackSize << "\n";
- DOUT << "getTopSavedReg : " << MipsFI->getTopSavedRegOffset() << "\n";
- DOUT << "Offset : " << Offset << "\n\n";
- #endif
-
- unsigned int Bitmask = getSavedRegsBitmask(false, MF);
- O << "\t.mask \t";
- printHex32(Bitmask);
- O << "," << Offset << "\n";
-}
-
-/// TODO: Mask Directive for Float Point
-void MipsAsmPrinter::
-emitFMaskDirective(MachineFunction &MF)
-{
- unsigned int Bitmask = getSavedRegsBitmask(true, MF);
-
- O << "\t.fmask\t";
- printHex32(Bitmask);
- O << ",0" << "\n";
-}
-
-/// Frame Directive
-void MipsAsmPrinter::
-emitFrameDirective(MachineFunction &MF)
-{
- const TargetRegisterInfo &RI = *TM.getRegisterInfo();
-
- unsigned stackReg = RI.getFrameRegister(MF);
- unsigned returnReg = RI.getRARegister();
- unsigned stackSize = MF.getFrameInfo()->getStackSize();
+//===----------------------------------------------------------------------===//
+// Mask directives
+//===----------------------------------------------------------------------===//
+// Create a bitmask with all callee saved registers for CPU or Floating Point
+// registers. For CPU registers consider RA, GP and FP for saving if necessary.
+void MipsAsmPrinter::printSavedRegsBitmask(raw_ostream &O) {
+ const TargetFrameLowering *TFI = TM.getFrameLowering();
+ const TargetRegisterInfo *RI = TM.getRegisterInfo();
+ const MipsFunctionInfo *MipsFI = MF->getInfo<MipsFunctionInfo>();
- O << "\t.frame\t" << "$" << LowercaseString(RI.get(stackReg).AsmName)
- << "," << stackSize << ","
- << "$" << LowercaseString(RI.get(returnReg).AsmName)
- << "\n";
-}
+ // CPU and FPU Saved Registers Bitmasks
+ unsigned int CPUBitmask = 0;
+ unsigned int FPUBitmask = 0;
-/// Emit Set directives.
-void MipsAsmPrinter::
-emitSetDirective(SetDirectiveFlags Flag)
-{
- O << "\t.set\t";
- switch(Flag) {
- case REORDER: O << "reorder" << "\n"; break;
- case NOREORDER: O << "noreorder" << "\n"; break;
- case MACRO: O << "macro" << "\n"; break;
- case NOMACRO: O << "nomacro" << "\n"; break;
- default: break;
+ // Set the CPU and FPU Bitmasks
+ const MachineFrameInfo *MFI = MF->getFrameInfo();
+ const std::vector<CalleeSavedInfo> &CSI = MFI->getCalleeSavedInfo();
+ for (unsigned i = 0, e = CSI.size(); i != e; ++i) {
+ unsigned Reg = CSI[i].getReg();
+ unsigned RegNum = MipsRegisterInfo::getRegisterNumbering(Reg);
+ if (Mips::CPURegsRegisterClass->contains(Reg))
+ CPUBitmask |= (1 << RegNum);
+ else
+ FPUBitmask |= (1 << RegNum);
}
-}
-// Create a bitmask with all callee saved registers for CPU
-// or Float Point registers. For CPU registers consider RA,
-// GP and FP for saving if necessary.
-unsigned int MipsAsmPrinter::
-getSavedRegsBitmask(bool isFloat, MachineFunction &MF)
-{
- const TargetRegisterInfo &RI = *TM.getRegisterInfo();
-
- // Float Point Registers, TODO
- if (isFloat)
- return 0;
+ // Return Address and Frame registers must also be set in CPUBitmask.
+ // FIXME: Do we really need hasFP() call here? When no FP is present SP is
+ // just returned -- will it be ok?
+ if (TFI->hasFP(*MF))
+ CPUBitmask |= (1 << MipsRegisterInfo::
+ getRegisterNumbering(RI->getFrameRegister(*MF)));
- // CPU Registers
- unsigned int Bitmask = 0;
+ if (MFI->adjustsStack())
+ CPUBitmask |= (1 << MipsRegisterInfo::
+ getRegisterNumbering(RI->getRARegister()));
- MachineFrameInfo *MFI = MF.getFrameInfo();
- const std::vector<CalleeSavedInfo> &CSI = MFI->getCalleeSavedInfo();
- for (unsigned i = 0, e = CSI.size(); i != e; ++i)
- Bitmask |= (1 << MipsRegisterInfo::getRegisterNumbering(CSI[i].getReg()));
-
- if (RI.hasFP(MF))
- Bitmask |= (1 << MipsRegisterInfo::
- getRegisterNumbering(RI.getFrameRegister(MF)));
-
- if (MF.getFrameInfo()->hasCalls())
- Bitmask |= (1 << MipsRegisterInfo::
- getRegisterNumbering(RI.getRARegister()));
+ // Print CPUBitmask
+ O << "\t.mask \t"; printHex32(CPUBitmask, O);
+ O << ',' << MipsFI->getCPUTopSavedRegOff() << '\n';
- return Bitmask;
+ // Print FPUBitmask
+ O << "\t.fmask\t"; printHex32(FPUBitmask, O); O << ","
+ << MipsFI->getFPUTopSavedRegOff() << '\n';
}
// Print a 32 bit hex number with all numbers.
-void MipsAsmPrinter::
-printHex32(unsigned int Value)
-{
- O << "0x" << std::hex;
+void MipsAsmPrinter::printHex32(unsigned Value, raw_ostream &O) {
+ O << "0x";
for (int i = 7; i >= 0; i--)
- O << std::hex << ( (Value & (0xF << (i*4))) >> (i*4) );
- O << std::dec;
+ O << utohexstr((Value & (0xF << (i*4))) >> (i*4));
}
-/// Emit the directives used by GAS on the start of functions
-void MipsAsmPrinter::
-emitFunctionStart(MachineFunction &MF)
-{
- // Print out the label for the function.
- const Function *F = MF.getFunction();
- SwitchToTextSection(getSectionForFunction(*F).c_str(), F);
-
- // 2 bits aligned
- EmitAlignment(2, F);
-
- O << "\t.globl\t" << CurrentFnName << "\n";
- O << "\t.ent\t" << CurrentFnName << "\n";
- O << "\t.type\t" << CurrentFnName << ", @function\n";
- O << CurrentFnName << ":\n";
-
- emitFrameDirective(MF);
- emitMaskDirective(MF);
- emitFMaskDirective(MF);
-
- if (TM.getRelocationModel() == Reloc::Static) {
- emitSetDirective(NOREORDER);
- emitSetDirective(NOMACRO);
- }
-
- O << "\n";
-}
+//===----------------------------------------------------------------------===//
+// Frame and Set directives
+//===----------------------------------------------------------------------===//
-/// Emit the directives used by GAS on the end of functions
-void MipsAsmPrinter::
-emitFunctionEnd(MachineFunction &MF)
-{
- if (TM.getRelocationModel() == Reloc::Static) {
- emitSetDirective(MACRO);
- emitSetDirective(REORDER);
- }
-
- O << "\t.end\t" << CurrentFnName << "\n";
-}
+/// Frame Directive
+void MipsAsmPrinter::emitFrameDirective() {
+ const TargetRegisterInfo &RI = *TM.getRegisterInfo();
-/// runOnMachineFunction - This uses the printMachineInstruction()
-/// method to print assembly for each instruction.
-bool MipsAsmPrinter::
-runOnMachineFunction(MachineFunction &MF)
-{
- SetupMachineFunction(MF);
+ unsigned stackReg = RI.getFrameRegister(*MF);
+ unsigned returnReg = RI.getRARegister();
+ unsigned stackSize = MF->getFrameInfo()->getStackSize();
- // Print out constants referenced by the function
- EmitConstantPool(MF.getConstantPool());
+ OutStreamer.EmitRawText("\t.frame\t$" +
+ Twine(LowercaseString(getRegisterName(stackReg))) +
+ "," + Twine(stackSize) + ",$" +
+ Twine(LowercaseString(getRegisterName(returnReg))));
+}
- // Print out jump tables referenced by the function
- EmitJumpTableInfo(MF.getJumpTableInfo(), MF);
+/// Emit Set directives.
+const char *MipsAsmPrinter::getCurrentABIString() const {
+ switch (Subtarget->getTargetABI()) {
+ case MipsSubtarget::O32: return "abi32";
+ case MipsSubtarget::O64: return "abiO64";
+ case MipsSubtarget::N32: return "abiN32";
+ case MipsSubtarget::N64: return "abi64";
+ case MipsSubtarget::EABI: return "eabi32"; // TODO: handle eabi64
+ default: break;
+ }
- O << "\n\n";
+ llvm_unreachable("Unknown Mips ABI");
+ return NULL;
+}
- // What's my mangled name?
- CurrentFnName = Mang->getValueName(MF.getFunction());
+void MipsAsmPrinter::EmitFunctionEntryLabel() {
+ OutStreamer.EmitRawText("\t.ent\t" + Twine(CurrentFnSym->getName()));
+ OutStreamer.EmitLabel(CurrentFnSym);
+}
- // Emit the function start directives
- emitFunctionStart(MF);
+/// EmitFunctionBodyStart - Targets can override this to emit stuff before
+/// the first basic block in the function.
+void MipsAsmPrinter::EmitFunctionBodyStart() {
+ emitFrameDirective();
+
+ SmallString<128> Str;
+ raw_svector_ostream OS(Str);
+ printSavedRegsBitmask(OS);
+ OutStreamer.EmitRawText(OS.str());
+}
- // Print out code for the function.
- for (MachineFunction::const_iterator I = MF.begin(), E = MF.end();
- I != E; ++I) {
+/// EmitFunctionBodyEnd - Targets can override this to emit stuff after
+/// the last basic block in the function.
+void MipsAsmPrinter::EmitFunctionBodyEnd() {
+ // There are instruction for this macros, but they must
+ // always be at the function end, and we can't emit and
+ // break with BB logic.
+ OutStreamer.EmitRawText(StringRef("\t.set\tmacro"));
+ OutStreamer.EmitRawText(StringRef("\t.set\treorder"));
+ OutStreamer.EmitRawText("\t.end\t" + Twine(CurrentFnSym->getName()));
+}
- // 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.
- printInstruction(II);
- ++EmittedInsts;
- }
+/// isBlockOnlyReachableByFallthough - Return true if the basic block has
+/// exactly one predecessor and the control transfer mechanism between
+/// the predecessor and this block is a fall-through.
+bool MipsAsmPrinter::isBlockOnlyReachableByFallthrough(const MachineBasicBlock *MBB)
+ const {
+ // The predecessor has to be immediately before this block.
+ const MachineBasicBlock *Pred = *MBB->pred_begin();
- // Each Basic Block is separated by a newline
- O << '\n';
- }
+ // If the predecessor is a switch statement, assume a jump table
+ // implementation, so it is not a fall through.
+ if (const BasicBlock *bb = Pred->getBasicBlock())
+ if (isa<SwitchInst>(bb->getTerminator()))
+ return false;
+
+ return AsmPrinter::isBlockOnlyReachableByFallthrough(MBB);
+}
- // Emit function end directives
- emitFunctionEnd(MF);
+// Print out an operand for an inline asm expression.
+bool MipsAsmPrinter::PrintAsmOperand(const MachineInstr *MI, unsigned OpNo,
+ unsigned AsmVariant,const char *ExtraCode,
+ raw_ostream &O) {
+ // Does this asm operand have a single letter operand modifier?
+ if (ExtraCode && ExtraCode[0])
+ return true; // Unknown modifier.
- // We didn't modify anything.
+ printOperand(MI, OpNo, O);
return false;
}
-void MipsAsmPrinter::
-printOperand(const MachineInstr *MI, int opNum)
-{
+void MipsAsmPrinter::printOperand(const MachineInstr *MI, int opNum,
+ raw_ostream &O) {
const MachineOperand &MO = MI->getOperand(opNum);
- const TargetRegisterInfo &RI = *TM.getRegisterInfo();
bool closeP = false;
- bool isPIC = (TM.getRelocationModel() == Reloc::PIC_);
- bool isCodeLarge = (TM.getCodeModel() == CodeModel::Large);
-
- // %hi and %lo used on mips gas to load global addresses on
- // static code. %got is used to load global addresses when
- // using PIC_. %call16 is used to load direct call targets
- // on PIC_ and small code size. %call_lo and %call_hi load
- // direct call targets on PIC_ and large code size.
- if (MI->getOpcode() == Mips::LUi && !MO.isRegister()
- && !MO.isImmediate()) {
- if ((isPIC) && (isCodeLarge))
- O << "%call_hi(";
+
+ if (MO.getTargetFlags())
+ closeP = true;
+
+ switch(MO.getTargetFlags()) {
+ case MipsII::MO_GPREL: O << "%gp_rel("; break;
+ case MipsII::MO_GOT_CALL: O << "%call16("; break;
+ case MipsII::MO_GOT: {
+ const MachineOperand &LastMO = MI->getOperand(opNum-1);
+ bool LastMOIsGP = LastMO.getType() == MachineOperand::MO_Register
+ && LastMO.getReg() == Mips::GP;
+ if (MI->getOpcode() == Mips::LW || LastMOIsGP)
+ O << "%got(";
else
+ O << "%lo(";
+ break;
+ }
+ case MipsII::MO_ABS_HILO:
+ if (MI->getOpcode() == Mips::LUi)
O << "%hi(";
- closeP = true;
- } else if ((MI->getOpcode() == Mips::ADDiu) && !MO.isRegister()
- && !MO.isImmediate()) {
- O << "%lo(";
- closeP = true;
- } else if ((isPIC) && (MI->getOpcode() == Mips::LW)
- && (!MO.isRegister()) && (!MO.isImmediate())) {
- const MachineOperand &firstMO = MI->getOperand(opNum-1);
- const MachineOperand &lastMO = MI->getOperand(opNum+1);
- if ((firstMO.isRegister()) && (lastMO.isRegister())) {
- if ((firstMO.getReg() == Mips::T9) && (lastMO.getReg() == Mips::GP)
- && (!isCodeLarge))
- O << "%call16(";
- else if ((firstMO.getReg() != Mips::T9) && (lastMO.getReg() == Mips::GP))
- O << "%got(";
- else if ((firstMO.getReg() == Mips::T9) && (lastMO.getReg() != Mips::GP)
- && (isCodeLarge))
- O << "%call_lo(";
- closeP = true;
- }
+ else
+ O << "%lo(";
+ break;
}
-
- switch (MO.getType())
- {
+
+ switch (MO.getType()) {
case MachineOperand::MO_Register:
- if (TargetRegisterInfo::isPhysicalRegister(MO.getReg()))
- O << "$" << LowercaseString (RI.get(MO.getReg()).AsmName);
- else
- O << "$" << MO.getReg();
+ O << '$' << LowercaseString(getRegisterName(MO.getReg()));
break;
case MachineOperand::MO_Immediate:
- if ((MI->getOpcode() == Mips::SLTiu) || (MI->getOpcode() == Mips::ORi) ||
- (MI->getOpcode() == Mips::LUi) || (MI->getOpcode() == Mips::ANDi))
- O << (unsigned short int)MO.getImm();
- else
- O << (short int)MO.getImm();
+ O << (short int)MO.getImm();
break;
case MachineOperand::MO_MachineBasicBlock:
- printBasicBlockLabel(MO.getMBB());
+ O << *MO.getMBB()->getSymbol();
return;
case MachineOperand::MO_GlobalAddress:
- O << Mang->getValueName(MO.getGlobal());
+ O << *Mang->getSymbol(MO.getGlobal());
break;
case MachineOperand::MO_ExternalSymbol:
- O << MO.getSymbolName();
+ O << *GetExternalSymbolSymbol(MO.getSymbolName());
break;
case MachineOperand::MO_JumpTableIndex:
- O << TAI->getPrivateGlobalPrefix() << "JTI" << getFunctionNumber()
- << '_' << MO.getIndex();
+ O << MAI->getPrivateGlobalPrefix() << "JTI" << getFunctionNumber()
+ << '_' << MO.getIndex();
break;
- // FIXME: Verify correct
case MachineOperand::MO_ConstantPoolIndex:
- O << TAI->getPrivateGlobalPrefix() << "CPI"
+ O << MAI->getPrivateGlobalPrefix() << "CPI"
<< getFunctionNumber() << "_" << MO.getIndex();
+ if (MO.getOffset())
+ O << "+" << MO.getOffset();
break;
default:
- O << "<unknown operand type>"; abort (); break;
+ llvm_unreachable("<unknown operand type>");
}
if (closeP) O << ")";
}
+void MipsAsmPrinter::printUnsignedImm(const MachineInstr *MI, int opNum,
+ raw_ostream &O) {
+ const MachineOperand &MO = MI->getOperand(opNum);
+ if (MO.isImm())
+ O << (unsigned short int)MO.getImm();
+ else
+ printOperand(MI, opNum, O);
+}
+
void MipsAsmPrinter::
-printMemOperand(const MachineInstr *MI, int opNum, const char *Modifier)
-{
+printMemOperand(const MachineInstr *MI, int opNum, raw_ostream &O,
+ const char *Modifier) {
// when using stack locations for not load/store instructions
// print the same way as all normal 3 operand instructions.
if (Modifier && !strcmp(Modifier, "stackloc")) {
- printOperand(MI, opNum+1);
+ printOperand(MI, opNum+1, O);
O << ", ";
- printOperand(MI, opNum);
+ printOperand(MI, opNum, O);
return;
}
// Load/Store memory operands -- imm($reg)
// If PIC target the target is loaded as the
// pattern lw $25,%call16($28)
- printOperand(MI, opNum);
+ printOperand(MI, opNum, O);
O << "(";
- printOperand(MI, opNum+1);
+ printOperand(MI, opNum+1, O);
O << ")";
}
-bool MipsAsmPrinter::
-doInitialization(Module &M)
-{
- Mang = new Mangler(M);
- return false; // success
+void MipsAsmPrinter::
+printFCCOperand(const MachineInstr *MI, int opNum, raw_ostream &O,
+ const char *Modifier) {
+ const MachineOperand& MO = MI->getOperand(opNum);
+ O << Mips::MipsFCCToString((Mips::CondCode)MO.getImm());
}
-bool MipsAsmPrinter::
-doFinalization(Module &M)
-{
- const TargetData *TD = TM.getTargetData();
-
- // Print out module-level global variables here.
- for (Module::const_global_iterator I = M.global_begin(),
- E = M.global_end(); I != E; ++I)
-
- // External global require no code
- if (I->hasInitializer()) {
-
- // Check to see if this is a special global
- // used by LLVM, if so, emit it.
- if (EmitSpecialLLVMGlobal(I))
- continue;
-
- O << "\n\n";
- std::string name = Mang->getValueName(I);
- Constant *C = I->getInitializer();
- unsigned Size = TD->getABITypeSize(C->getType());
- unsigned Align = TD->getPreferredAlignmentLog(I);
-
- // Is this correct ?
- if (C->isNullValue() && (I->hasLinkOnceLinkage() ||
- I->hasInternalLinkage() || I->hasWeakLinkage() ||
- I->hasCommonLinkage()))
- {
- if (Size == 0) Size = 1; // .comm Foo, 0 is undefined, avoid it.
-
- if (!NoZerosInBSS && TAI->getBSSSection())
- SwitchToDataSection(TAI->getBSSSection(), I);
- else
- SwitchToDataSection(TAI->getDataSection(), I);
-
- if (I->hasInternalLinkage()) {
- if (TAI->getLCOMMDirective())
- O << TAI->getLCOMMDirective() << name << "," << Size;
- else
- O << "\t.local\t" << name << "\n";
- } else {
- O << TAI->getCOMMDirective() << name << "," << Size;
- // The .comm alignment in bytes.
- if (TAI->getCOMMDirectiveTakesAlignment())
- O << "," << (1 << Align);
- }
-
- } else {
-
- switch (I->getLinkage())
- {
- case GlobalValue::LinkOnceLinkage:
- case GlobalValue::CommonLinkage:
- case GlobalValue::WeakLinkage:
- // FIXME: Verify correct for weak.
- // Nonnull linkonce -> weak
- O << "\t.weak " << name << "\n";
- SwitchToDataSection("", I);
- O << "\t.section\t\".llvm.linkonce.d." << name
- << "\",\"aw\",@progbits\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:
- // If external or appending, declare as a global symbol
- O << TAI->getGlobalDirective() << name << "\n";
- // Fall Through
- case GlobalValue::InternalLinkage:
- // FIXME: special handling for ".ctors" & ".dtors" sections
- if (I->hasSection() && (I->getSection() == ".ctors" ||
- I->getSection() == ".dtors")) {
- std::string SectionName = ".section " + I->getSection();
- SectionName += ",\"aw\",%progbits";
- SwitchToDataSection(SectionName.c_str());
- } else {
- if (C->isNullValue() && !NoZerosInBSS && TAI->getBSSSection())
- SwitchToDataSection(TAI->getBSSSection(), I);
- else if (!I->isConstant())
- SwitchToDataSection(TAI->getDataSection(), I);
- else {
- // Read-only data.
- if (TAI->getReadOnlySection())
- SwitchToDataSection(TAI->getReadOnlySection(), I);
- else
- SwitchToDataSection(TAI->getDataSection(), I);
- }
- }
- break;
- case GlobalValue::GhostLinkage:
- cerr << "Should not have any unmaterialized functions!\n";
- abort();
- case GlobalValue::DLLImportLinkage:
- cerr << "DLLImport linkage is not supported by this target!\n";
- abort();
- case GlobalValue::DLLExportLinkage:
- cerr << "DLLExport linkage is not supported by this target!\n";
- abort();
- default:
- assert(0 && "Unknown linkage type!");
- }
-
- O << "\t.align " << Align << "\n";
- O << "\t.type " << name << ",@object\n";
- O << "\t.size " << name << "," << Size << "\n";
- O << name << ":\n";
- EmitGlobalConstant(C);
- }
+void MipsAsmPrinter::EmitStartOfAsmFile(Module &M) {
+ // FIXME: Use SwitchSection.
+
+ // Tell the assembler which ABI we are using
+ OutStreamer.EmitRawText("\t.section .mdebug." + Twine(getCurrentABIString()));
+
+ // TODO: handle O64 ABI
+ if (Subtarget->isABI_EABI()) {
+ if (Subtarget->isGP32bit())
+ OutStreamer.EmitRawText(StringRef("\t.section .gcc_compiled_long32"));
+ else
+ OutStreamer.EmitRawText(StringRef("\t.section .gcc_compiled_long64"));
}
- O << "\n";
+ // return to previous section
+ OutStreamer.EmitRawText(StringRef("\t.previous"));
+}
- return AsmPrinter::doFinalization(M);
+// Force static initialization.
+extern "C" void LLVMInitializeMipsAsmPrinter() {
+ RegisterAsmPrinter<MipsAsmPrinter> X(TheMipsTarget);
+ RegisterAsmPrinter<MipsAsmPrinter> Y(TheMipselTarget);
}
projects / oota-llvm.git / blobdiff