mirror of
https://github.com/c64scene-ar/llvm-6502.git
synced 2024-10-17 03:26:03 +00:00
c5ea263a23
the MCInst path of the asmprinter. Instead, pull comment printing out of the autogenerated asmprinter into each target that uses the autogenerated asmprinter. This causes code duplication into each target, but in a way that will be easier to clean up later when more asmprinter stuff is commonized into the base AsmPrinter class. This also fixes an xcore strangeness where it inserted two tabs before every instruction. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@81396 91177308-0d34-0410-b5e6-96231b3b80d8
341 lines
11 KiB
C++
341 lines
11 KiB
C++
//===-- SparcAsmPrinter.cpp - Sparc 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 SPARC assembly language.
|
|
//
|
|
//===----------------------------------------------------------------------===//
|
|
|
|
#define DEBUG_TYPE "asm-printer"
|
|
#include "Sparc.h"
|
|
#include "SparcInstrInfo.h"
|
|
#include "SparcTargetMachine.h"
|
|
#include "llvm/Constants.h"
|
|
#include "llvm/DerivedTypes.h"
|
|
#include "llvm/Module.h"
|
|
#include "llvm/CodeGen/AsmPrinter.h"
|
|
#include "llvm/CodeGen/DwarfWriter.h"
|
|
#include "llvm/CodeGen/MachineFunctionPass.h"
|
|
#include "llvm/CodeGen/MachineConstantPool.h"
|
|
#include "llvm/CodeGen/MachineInstr.h"
|
|
#include "llvm/MC/MCStreamer.h"
|
|
#include "llvm/MC/MCAsmInfo.h"
|
|
#include "llvm/Target/TargetLoweringObjectFile.h"
|
|
#include "llvm/Target/TargetRegistry.h"
|
|
#include "llvm/ADT/Statistic.h"
|
|
#include "llvm/ADT/StringExtras.h"
|
|
#include "llvm/Support/CommandLine.h"
|
|
#include "llvm/Support/ErrorHandling.h"
|
|
#include "llvm/Support/FormattedStream.h"
|
|
#include "llvm/Support/Mangler.h"
|
|
#include "llvm/Support/MathExtras.h"
|
|
#include <cctype>
|
|
#include <cstring>
|
|
#include <map>
|
|
using namespace llvm;
|
|
|
|
STATISTIC(EmittedInsts, "Number of machine instrs printed");
|
|
|
|
namespace {
|
|
class VISIBILITY_HIDDEN SparcAsmPrinter : public AsmPrinter {
|
|
/// 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;
|
|
unsigned BBNumber;
|
|
public:
|
|
explicit SparcAsmPrinter(formatted_raw_ostream &O, TargetMachine &TM,
|
|
const MCAsmInfo *T, bool V)
|
|
: AsmPrinter(O, TM, T, V), BBNumber(0) {}
|
|
|
|
virtual const char *getPassName() const {
|
|
return "Sparc Assembly Printer";
|
|
}
|
|
|
|
void PrintGlobalVariable(const GlobalVariable *GVar);
|
|
void printOperand(const MachineInstr *MI, int opNum);
|
|
void printMemOperand(const MachineInstr *MI, int opNum,
|
|
const char *Modifier = 0);
|
|
void printCCOperand(const MachineInstr *MI, int opNum);
|
|
|
|
void printInstruction(const MachineInstr *MI); // autogenerated.
|
|
bool runOnMachineFunction(MachineFunction &F);
|
|
bool PrintAsmOperand(const MachineInstr *MI, unsigned OpNo,
|
|
unsigned AsmVariant, const char *ExtraCode);
|
|
bool PrintAsmMemoryOperand(const MachineInstr *MI, unsigned OpNo,
|
|
unsigned AsmVariant, const char *ExtraCode);
|
|
};
|
|
} // end of anonymous namespace
|
|
|
|
#include "SparcGenAsmWriter.inc"
|
|
|
|
|
|
/// runOnMachineFunction - This uses the printInstruction()
|
|
/// method to print assembly for each instruction.
|
|
///
|
|
bool SparcAsmPrinter::runOnMachineFunction(MachineFunction &MF) {
|
|
this->MF = &MF;
|
|
|
|
SetupMachineFunction(MF);
|
|
|
|
// Print out constants referenced by the function
|
|
EmitConstantPool(MF.getConstantPool());
|
|
|
|
// BBNumber is used here so that a given Printer will never give two
|
|
// BBs the same name. (If you have a better way, please let me know!)
|
|
|
|
O << "\n\n";
|
|
|
|
// Print out the label for the function.
|
|
const Function *F = MF.getFunction();
|
|
OutStreamer.SwitchSection(getObjFileLowering().SectionForGlobal(F, Mang, TM));
|
|
EmitAlignment(MF.getAlignment(), F);
|
|
O << "\t.globl\t" << CurrentFnName << '\n';
|
|
|
|
printVisibility(CurrentFnName, F->getVisibility());
|
|
|
|
O << "\t.type\t" << CurrentFnName << ", #function\n";
|
|
O << CurrentFnName << ":\n";
|
|
// Emit pre-function debug information.
|
|
DW->BeginFunction(&MF);
|
|
|
|
// Number each basic block so that we can consistently refer to them
|
|
// in PC-relative references.
|
|
// FIXME: Why not use the MBB numbers?
|
|
NumberForBB.clear();
|
|
for (MachineFunction::const_iterator I = MF.begin(), E = MF.end();
|
|
I != E; ++I) {
|
|
NumberForBB[I->getBasicBlock()] = BBNumber++;
|
|
}
|
|
|
|
// 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.
|
|
processDebugLoc(II->getDebugLoc());
|
|
printInstruction(II);
|
|
|
|
if (VerboseAsm && !II->getDebugLoc().isUnknown())
|
|
EmitComments(*II);
|
|
O << '\n';
|
|
|
|
++EmittedInsts;
|
|
}
|
|
}
|
|
|
|
// Emit post-function debug information.
|
|
DW->EndFunction(&MF);
|
|
|
|
// We didn't modify anything.
|
|
return false;
|
|
}
|
|
|
|
void SparcAsmPrinter::printOperand(const MachineInstr *MI, int opNum) {
|
|
const MachineOperand &MO = MI->getOperand (opNum);
|
|
const TargetRegisterInfo &RI = *TM.getRegisterInfo();
|
|
bool CloseParen = false;
|
|
if (MI->getOpcode() == SP::SETHIi && !MO.isReg() && !MO.isImm()) {
|
|
O << "%hi(";
|
|
CloseParen = true;
|
|
} else if ((MI->getOpcode() == SP::ORri || MI->getOpcode() == SP::ADDri) &&
|
|
!MO.isReg() && !MO.isImm()) {
|
|
O << "%lo(";
|
|
CloseParen = true;
|
|
}
|
|
switch (MO.getType()) {
|
|
case MachineOperand::MO_Register:
|
|
if (TargetRegisterInfo::isPhysicalRegister(MO.getReg()))
|
|
O << "%" << LowercaseString (RI.get(MO.getReg()).AsmName);
|
|
else
|
|
O << "%reg" << MO.getReg();
|
|
break;
|
|
|
|
case MachineOperand::MO_Immediate:
|
|
O << (int)MO.getImm();
|
|
break;
|
|
case MachineOperand::MO_MachineBasicBlock:
|
|
printBasicBlockLabel(MO.getMBB());
|
|
return;
|
|
case MachineOperand::MO_GlobalAddress:
|
|
O << Mang->getMangledName(MO.getGlobal());
|
|
break;
|
|
case MachineOperand::MO_ExternalSymbol:
|
|
O << MO.getSymbolName();
|
|
break;
|
|
case MachineOperand::MO_ConstantPoolIndex:
|
|
O << MAI->getPrivateGlobalPrefix() << "CPI" << getFunctionNumber() << "_"
|
|
<< MO.getIndex();
|
|
break;
|
|
default:
|
|
llvm_unreachable("<unknown operand type>");
|
|
}
|
|
if (CloseParen) O << ")";
|
|
}
|
|
|
|
void SparcAsmPrinter::printMemOperand(const MachineInstr *MI, int opNum,
|
|
const char *Modifier) {
|
|
printOperand(MI, opNum);
|
|
|
|
// If this is an ADD operand, emit it like normal operands.
|
|
if (Modifier && !strcmp(Modifier, "arith")) {
|
|
O << ", ";
|
|
printOperand(MI, opNum+1);
|
|
return;
|
|
}
|
|
|
|
if (MI->getOperand(opNum+1).isReg() &&
|
|
MI->getOperand(opNum+1).getReg() == SP::G0)
|
|
return; // don't print "+%g0"
|
|
if (MI->getOperand(opNum+1).isImm() &&
|
|
MI->getOperand(opNum+1).getImm() == 0)
|
|
return; // don't print "+0"
|
|
|
|
O << "+";
|
|
if (MI->getOperand(opNum+1).isGlobal() ||
|
|
MI->getOperand(opNum+1).isCPI()) {
|
|
O << "%lo(";
|
|
printOperand(MI, opNum+1);
|
|
O << ")";
|
|
} else {
|
|
printOperand(MI, opNum+1);
|
|
}
|
|
}
|
|
|
|
void SparcAsmPrinter::printCCOperand(const MachineInstr *MI, int opNum) {
|
|
int CC = (int)MI->getOperand(opNum).getImm();
|
|
O << SPARCCondCodeToString((SPCC::CondCodes)CC);
|
|
}
|
|
|
|
void SparcAsmPrinter::PrintGlobalVariable(const GlobalVariable* GVar) {
|
|
const TargetData *TD = TM.getTargetData();
|
|
|
|
if (!GVar->hasInitializer())
|
|
return; // External global require no code
|
|
|
|
// Check to see if this is a special global used by LLVM, if so, emit it.
|
|
if (EmitSpecialLLVMGlobal(GVar))
|
|
return;
|
|
|
|
O << "\n\n";
|
|
std::string name = Mang->getMangledName(GVar);
|
|
Constant *C = GVar->getInitializer();
|
|
unsigned Size = TD->getTypeAllocSize(C->getType());
|
|
unsigned Align = TD->getPreferredAlignment(GVar);
|
|
|
|
printVisibility(name, GVar->getVisibility());
|
|
|
|
OutStreamer.SwitchSection(getObjFileLowering().SectionForGlobal(GVar, Mang,
|
|
TM));
|
|
|
|
if (C->isNullValue() && !GVar->hasSection()) {
|
|
if (!GVar->isThreadLocal() &&
|
|
(GVar->hasLocalLinkage() || GVar->isWeakForLinker())) {
|
|
if (Size == 0) Size = 1; // .comm Foo, 0 is undefined, avoid it.
|
|
|
|
if (GVar->hasLocalLinkage())
|
|
O << "\t.local " << name << '\n';
|
|
|
|
O << MAI->getCOMMDirective() << name << ',' << Size;
|
|
if (MAI->getCOMMDirectiveTakesAlignment())
|
|
O << ',' << (1 << Align);
|
|
|
|
O << '\n';
|
|
return;
|
|
}
|
|
}
|
|
|
|
switch (GVar->getLinkage()) {
|
|
case GlobalValue::CommonLinkage:
|
|
case GlobalValue::LinkOnceAnyLinkage:
|
|
case GlobalValue::LinkOnceODRLinkage:
|
|
case GlobalValue::WeakAnyLinkage: // FIXME: Verify correct for weak.
|
|
case GlobalValue::WeakODRLinkage: // FIXME: Verify correct for weak.
|
|
// Nonnull linkonce -> weak
|
|
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:
|
|
// If external or appending, declare as a global symbol
|
|
O << MAI->getGlobalDirective() << name << '\n';
|
|
// FALL THROUGH
|
|
case GlobalValue::PrivateLinkage:
|
|
case GlobalValue::LinkerPrivateLinkage:
|
|
case GlobalValue::InternalLinkage:
|
|
break;
|
|
case GlobalValue::GhostLinkage:
|
|
llvm_unreachable("Should not have any unmaterialized functions!");
|
|
case GlobalValue::DLLImportLinkage:
|
|
llvm_unreachable("DLLImport linkage is not supported by this target!");
|
|
case GlobalValue::DLLExportLinkage:
|
|
llvm_unreachable("DLLExport linkage is not supported by this target!");
|
|
default:
|
|
llvm_unreachable("Unknown linkage type!");
|
|
}
|
|
|
|
EmitAlignment(Align, GVar);
|
|
|
|
if (MAI->hasDotTypeDotSizeDirective()) {
|
|
O << "\t.type " << name << ",#object\n";
|
|
O << "\t.size " << name << ',' << Size << '\n';
|
|
}
|
|
|
|
O << name << ":\n";
|
|
EmitGlobalConstant(C);
|
|
}
|
|
|
|
/// PrintAsmOperand - Print out an operand for an inline asm expression.
|
|
///
|
|
bool SparcAsmPrinter::PrintAsmOperand(const MachineInstr *MI, unsigned OpNo,
|
|
unsigned AsmVariant,
|
|
const char *ExtraCode) {
|
|
if (ExtraCode && ExtraCode[0]) {
|
|
if (ExtraCode[1] != 0) return true; // Unknown modifier.
|
|
|
|
switch (ExtraCode[0]) {
|
|
default: return true; // Unknown modifier.
|
|
case 'r':
|
|
break;
|
|
}
|
|
}
|
|
|
|
printOperand(MI, OpNo);
|
|
|
|
return false;
|
|
}
|
|
|
|
bool SparcAsmPrinter::PrintAsmMemoryOperand(const MachineInstr *MI,
|
|
unsigned OpNo,
|
|
unsigned AsmVariant,
|
|
const char *ExtraCode) {
|
|
if (ExtraCode && ExtraCode[0])
|
|
return true; // Unknown modifier
|
|
|
|
O << '[';
|
|
printMemOperand(MI, OpNo);
|
|
O << ']';
|
|
|
|
return false;
|
|
}
|
|
|
|
// Force static initialization.
|
|
extern "C" void LLVMInitializeSparcAsmPrinter() {
|
|
RegisterAsmPrinter<SparcAsmPrinter> X(TheSparcTarget);
|
|
}
|