#define DEBUG_TYPE "asm-printer"
#include "X86ATTAsmPrinter.h"
+#include "X86MCInstLower.h"
#include "X86.h"
#include "X86COFF.h"
#include "X86MachineFunctionInfo.h"
#include "X86TargetMachine.h"
-#include "X86TargetAsmInfo.h"
#include "llvm/CallingConv.h"
#include "llvm/DerivedTypes.h"
#include "llvm/Module.h"
-#include "llvm/MDNode.h"
#include "llvm/Type.h"
-#include "llvm/ADT/Statistic.h"
-#include "llvm/ADT/StringExtras.h"
+#include "llvm/Assembly/Writer.h"
#include "llvm/MC/MCContext.h"
-#include "llvm/MC/MCInst.h"
+#include "llvm/MC/MCSectionMachO.h"
#include "llvm/MC/MCStreamer.h"
-#include "llvm/CodeGen/DwarfWriter.h"
+#include "llvm/MC/MCSymbol.h"
#include "llvm/CodeGen/MachineJumpTableInfo.h"
-#include "llvm/Support/CommandLine.h"
+#include "llvm/Support/ErrorHandling.h"
+#include "llvm/Support/FormattedStream.h"
#include "llvm/Support/Mangler.h"
-#include "llvm/Support/raw_ostream.h"
-#include "llvm/Target/TargetAsmInfo.h"
+#include "llvm/MC/MCAsmInfo.h"
+#include "llvm/Target/TargetLoweringObjectFile.h"
#include "llvm/Target/TargetOptions.h"
+#include "llvm/ADT/SmallString.h"
+#include "llvm/ADT/Statistic.h"
using namespace llvm;
STATISTIC(EmittedInsts, "Number of machine instrs printed");
-static cl::opt<bool> NewAsmPrinter("experimental-asm-printer",
- cl::Hidden);
-
//===----------------------------------------------------------------------===//
// Primitive Helper Functions.
//===----------------------------------------------------------------------===//
void X86ATTAsmPrinter::PrintPICBaseSymbol() const {
- if (Subtarget->isTargetDarwin())
- O << "\"L" << getFunctionNumber() << "$pb\"";
- else if (Subtarget->isTargetELF())
- O << ".Lllvm$" << getFunctionNumber() << ".$piclabel";
- else
- assert(0 && "Don't know how to print PIC label!\n");
-}
-
-/// PrintUnmangledNameSafely - Print out the printable characters in the name.
-/// Don't print things like \\n or \\0.
-static void PrintUnmangledNameSafely(const Value *V, raw_ostream &OS) {
- for (const char *Name = V->getNameStart(), *E = Name+V->getNameLen();
- Name != E; ++Name)
- if (isprint(*Name))
- OS << *Name;
+ // FIXME: Gross const cast hack.
+ X86ATTAsmPrinter *AP = const_cast<X86ATTAsmPrinter*>(this);
+ X86MCInstLower(OutContext, 0, *AP).GetPICBaseSymbol()->print(O, MAI);
}
static X86MachineFunctionInfo calculateFunctionInfo(const Function *F,
return Info;
}
-/// decorateName - Query FunctionInfoMap and use this information for various
-/// name decoration.
-void X86ATTAsmPrinter::decorateName(std::string &Name,
- const GlobalValue *GV) {
+/// DecorateCygMingName - Query FunctionInfoMap and use this information for
+/// various name decorations for Cygwin and MingW.
+void X86ATTAsmPrinter::DecorateCygMingName(SmallVectorImpl<char> &Name,
+ const GlobalValue *GV) {
+ assert(Subtarget->isTargetCygMing() && "This is only for cygwin and mingw");
+
const Function *F = dyn_cast<Function>(GV);
if (!F) return;
-
+
+ // Save function name for later type emission.
+ if (F->isDeclaration())
+ CygMingStubs.insert(StringRef(Name.data(), Name.size()));
+
// We don't want to decorate non-stdcall or non-fastcall functions right now
- unsigned CC = F->getCallingConv();
+ CallingConv::ID CC = F->getCallingConv();
if (CC != CallingConv::X86_StdCall && CC != CallingConv::X86_FastCall)
return;
-
- // Decorate names only when we're targeting Cygwin/Mingw32 targets
- if (!Subtarget->isTargetCygMing())
- return;
-
- FMFInfoMap::const_iterator info_item = FunctionInfoMap.find(F);
-
+
+
const X86MachineFunctionInfo *Info;
+
+ FMFInfoMap::const_iterator info_item = FunctionInfoMap.find(F);
if (info_item == FunctionInfoMap.end()) {
// Calculate apropriate function info and populate map
FunctionInfoMap[F] = calculateFunctionInfo(F, TM.getTargetData());
} else {
Info = &info_item->second;
}
-
+
+ if (Info->getDecorationStyle() == None) return;
const FunctionType *FT = F->getFunctionType();
- switch (Info->getDecorationStyle()) {
- case None:
- break;
- case StdCall:
- // "Pure" variadic functions do not receive @0 suffix.
- if (!FT->isVarArg() || (FT->getNumParams() == 0) ||
- (FT->getNumParams() == 1 && F->hasStructRetAttr()))
- Name += '@' + utostr_32(Info->getBytesToPopOnReturn());
- break;
- case FastCall:
- // "Pure" variadic functions do not receive @0 suffix.
- if (!FT->isVarArg() || (FT->getNumParams() == 0) ||
- (FT->getNumParams() == 1 && F->hasStructRetAttr()))
- Name += '@' + utostr_32(Info->getBytesToPopOnReturn());
- if (Name[0] == '_') {
+ // "Pure" variadic functions do not receive @0 suffix.
+ if (!FT->isVarArg() || FT->getNumParams() == 0 ||
+ (FT->getNumParams() == 1 && F->hasStructRetAttr()))
+ raw_svector_ostream(Name) << '@' << Info->getBytesToPopOnReturn();
+
+ if (Info->getDecorationStyle() == FastCall) {
+ if (Name[0] == '_')
Name[0] = '@';
- } else {
- Name = '@' + Name;
- }
- break;
- default:
- assert(0 && "Unsupported DecorationStyle");
- }
+ else
+ Name.insert(Name.begin(), '@');
+ }
+}
+
+/// DecorateCygMingName - Query FunctionInfoMap and use this information for
+/// various name decorations for Cygwin and MingW.
+void X86ATTAsmPrinter::DecorateCygMingName(std::string &Name,
+ const GlobalValue *GV) {
+ SmallString<128> NameStr(Name.begin(), Name.end());
+ DecorateCygMingName(NameStr, GV);
+ Name.assign(NameStr.begin(), NameStr.end());
}
void X86ATTAsmPrinter::emitFunctionHeader(const MachineFunction &MF) {
unsigned FnAlign = MF.getAlignment();
const Function *F = MF.getFunction();
- decorateName(CurrentFnName, F);
+ if (Subtarget->isTargetCygMing())
+ DecorateCygMingName(CurrentFnName, F);
+
+ OutStreamer.SwitchSection(getObjFileLowering().SectionForGlobal(F, Mang, TM));
+ EmitAlignment(FnAlign, F);
- SwitchToSection(TAI->SectionForGlobal(F));
switch (F->getLinkage()) {
- default: assert(0 && "Unknown linkage type!");
+ default: llvm_unreachable("Unknown linkage type!");
case Function::InternalLinkage: // Symbols default to internal.
case Function::PrivateLinkage:
- EmitAlignment(FnAlign, F);
break;
case Function::DLLExportLinkage:
case Function::ExternalLinkage:
- EmitAlignment(FnAlign, F);
O << "\t.globl\t" << CurrentFnName << '\n';
break;
+ case Function::LinkerPrivateLinkage:
case Function::LinkOnceAnyLinkage:
case Function::LinkOnceODRLinkage:
case Function::WeakAnyLinkage:
case Function::WeakODRLinkage:
- EmitAlignment(FnAlign, F);
if (Subtarget->isTargetDarwin()) {
O << "\t.globl\t" << CurrentFnName << '\n';
- O << TAI->getWeakDefDirective() << CurrentFnName << '\n';
+ O << MAI->getWeakDefDirective() << CurrentFnName << '\n';
} else if (Subtarget->isTargetCygMing()) {
O << "\t.globl\t" << CurrentFnName << "\n"
"\t.linkonce discard\n";
<< ";\t.endef\n";
}
- O << CurrentFnName << ":\n";
+ O << CurrentFnName << ':';
+ if (VerboseAsm) {
+ O.PadToColumn(MAI->getCommentColumn());
+ O << MAI->getCommentString() << ' ';
+ WriteAsOperand(O, F, /*PrintType=*/false, F->getParent());
+ }
+ O << '\n';
+
// Add some workaround for linkonce linkage on Cygwin\MinGW
if (Subtarget->isTargetCygMing() &&
(F->hasLinkOnceLinkage() || F->hasWeakLinkage()))
bool X86ATTAsmPrinter::runOnMachineFunction(MachineFunction &MF) {
const Function *F = MF.getFunction();
this->MF = &MF;
- unsigned CC = F->getCallingConv();
+ CallingConv::ID CC = F->getCallingConv();
SetupMachineFunction(MF);
O << "\n\n";
EmitConstantPool(MF.getConstantPool());
if (F->hasDLLExportLinkage())
- DLLExportedFns.insert(Mang->makeNameProper(F->getName(), ""));
+ DLLExportedFns.insert(Mang->getMangledName(F));
// Print the 'header' of function
emitFunctionHeader(MF);
// Emit pre-function debug and/or EH information.
- if (TAI->doesSupportDebugInformation() || TAI->doesSupportExceptionHandling())
+ if (MAI->doesSupportDebugInformation() || MAI->doesSupportExceptionHandling())
DW->BeginFunction(&MF);
// Print out code for the function.
// This is an entry block or a block that's only reachable via a
// fallthrough edge. In non-VerboseAsm mode, don't print the label.
} else {
- printBasicBlockLabel(I, true, true, VerboseAsm);
+ EmitBasicBlockStart(I);
O << '\n';
}
for (MachineBasicBlock::const_iterator II = I->begin(), IE = I->end();
O << "\tnop\n";
}
- if (TAI->hasDotTypeDotSizeDirective())
+ if (MAI->hasDotTypeDotSizeDirective())
O << "\t.size\t" << CurrentFnName << ", .-" << CurrentFnName << '\n';
// Emit post-function debug information.
- if (TAI->doesSupportDebugInformation() || TAI->doesSupportExceptionHandling())
+ if (MAI->doesSupportDebugInformation() || MAI->doesSupportExceptionHandling())
DW->EndFunction(&MF);
// Print out jump tables referenced by the function.
EmitJumpTableInfo(MF.getJumpTableInfo(), MF);
- O.flush();
-
// We didn't modify anything.
return false;
}
-/// print_pcrel_imm - This is used to print an immediate value that ends up
-/// being encoded as a pc-relative value. These print slightly differently, for
-/// example, a $ is not emitted.
-void X86ATTAsmPrinter::print_pcrel_imm(const MachineInstr *MI, unsigned OpNo) {
- const MachineOperand &MO = MI->getOperand(OpNo);
+/// printSymbolOperand - Print a raw symbol reference operand. This handles
+/// jump tables, constant pools, global address and external symbols, all of
+/// which print to a label with various suffixes for relocation types etc.
+void X86ATTAsmPrinter::printSymbolOperand(const MachineOperand &MO) {
switch (MO.getType()) {
- default: assert(0 && "Unknown pcrel immediate operand");
- case MachineOperand::MO_Immediate:
- O << MO.getImm();
- return;
- case MachineOperand::MO_MachineBasicBlock:
- printBasicBlockLabel(MO.getMBB(), false, false, VerboseAsm);
- return;
-
+ default: llvm_unreachable("unknown symbol type!");
+ case MachineOperand::MO_JumpTableIndex:
+ O << MAI->getPrivateGlobalPrefix() << "JTI" << getFunctionNumber() << '_'
+ << MO.getIndex();
+ break;
+ case MachineOperand::MO_ConstantPoolIndex:
+ O << MAI->getPrivateGlobalPrefix() << "CPI" << getFunctionNumber() << '_'
+ << MO.getIndex();
+ printOffset(MO.getOffset());
+ break;
case MachineOperand::MO_GlobalAddress: {
const GlobalValue *GV = MO.getGlobal();
- std::string Name = Mang->getValueName(GV);
- decorateName(Name, GV);
- bool needCloseParen = false;
- if (Name[0] == '$') {
- // The name begins with a dollar-sign. In order to avoid having it look
- // like an integer immediate to the assembler, enclose it in parens.
- O << '(';
- needCloseParen = true;
- }
+ const char *Suffix = "";
+ if (MO.getTargetFlags() == X86II::MO_DARWIN_STUB)
+ Suffix = "$stub";
+ else if (MO.getTargetFlags() == X86II::MO_DARWIN_NONLAZY ||
+ MO.getTargetFlags() == X86II::MO_DARWIN_NONLAZY_PIC_BASE ||
+ MO.getTargetFlags() == X86II::MO_DARWIN_HIDDEN_NONLAZY_PIC_BASE)
+ Suffix = "$non_lazy_ptr";
- if (Subtarget->isPICStyleStub()) {
- // DARWIN/X86-32 in != static mode.
-
- // Link-once, declaration, or Weakly-linked global variables need
- // non-lazily-resolved stubs
- if (GV->isDeclaration() || GV->isWeakForLinker()) {
- // Dynamically-resolved functions need a stub for the function.
- if (isa<Function>(GV)) {
- // Function stubs are no longer needed for Mac OS X 10.5 and up.
- if (Subtarget->isTargetDarwin() && Subtarget->getDarwinVers() >= 9) {
- O << Name;
- } else {
- FnStubs.insert(Name);
- printSuffixedName(Name, "$stub");
- }
- assert(MO.getTargetFlags() == 0);
- } else if (GV->hasHiddenVisibility()) {
- if (!GV->isDeclaration() && !GV->hasCommonLinkage())
- // Definition is not definitely in the current translation unit.
- O << Name;
- else {
- HiddenGVStubs.insert(Name);
- printSuffixedName(Name, "$non_lazy_ptr");
- assert(MO.getTargetFlags() == 0);
- }
- } else {
- GVStubs.insert(Name);
- printSuffixedName(Name, "$non_lazy_ptr");
- assert(MO.getTargetFlags() == 0);
- }
- } else {
- O << Name;
- }
- } else {
- // Handle dllimport linkage.
- if (MO.getTargetFlags() == X86II::MO_DLLIMPORT)
- O << "__imp_";
- O << Name;
-
- // Assemble call via PLT for externally visible symbols.
- if (MO.getTargetFlags() == X86II::MO_PLT)
- O << "@PLT";
-
-
- if (Subtarget->isTargetCygMing() && GV->isDeclaration())
- // Save function name for later type emission
- FnStubs.insert(Name);
- }
-
- printOffset(MO.getOffset());
+ std::string Name = Mang->getMangledName(GV, Suffix, Suffix[0] != '\0');
+ if (Subtarget->isTargetCygMing())
+ DecorateCygMingName(Name, GV);
- if (needCloseParen)
- O << ')';
- return;
- }
-
- case MachineOperand::MO_ExternalSymbol: {
- bool needCloseParen = false;
- std::string Name(TAI->getGlobalPrefix());
- Name += MO.getSymbolName();
- // Print function stub suffix unless it's Mac OS X 10.5 and up.
- if (Subtarget->isPICStyleStub() &&
- // DARWIN/X86-32 in != static mode.
- Subtarget->getDarwinVers() < 9) {
- FnStubs.insert(Name);
- printSuffixedName(Name, "$stub");
- return;
- }
+ // Handle dllimport linkage.
+ if (MO.getTargetFlags() == X86II::MO_DLLIMPORT)
+ Name = "__imp_" + Name;
- if (Name[0] == '$') {
- // The name begins with a dollar-sign. In order to avoid having it look
- // like an integer immediate to the assembler, enclose it in parens.
- O << '(';
- needCloseParen = true;
- }
-
- O << Name;
-
- if (MO.getTargetFlags() == X86II::MO_GOT_ABSOLUTE_ADDRESS) {
- O << " + [.-";
- PrintPICBaseSymbol();
- O << ']';
+ if (MO.getTargetFlags() == X86II::MO_DARWIN_NONLAZY ||
+ MO.getTargetFlags() == X86II::MO_DARWIN_NONLAZY_PIC_BASE) {
+ SmallString<128> NameStr;
+ Mang->getNameWithPrefix(NameStr, GV, true);
+ NameStr += "$non_lazy_ptr";
+ MCSymbol *Sym = OutContext.GetOrCreateSymbol(NameStr.str());
+ MCSymbol *&StubSym = GVStubs[Sym];
+ if (StubSym == 0) {
+ NameStr.clear();
+ Mang->getNameWithPrefix(NameStr, GV, false);
+ StubSym = OutContext.GetOrCreateSymbol(NameStr.str());
+ }
+ } else if (MO.getTargetFlags() == X86II::MO_DARWIN_HIDDEN_NONLAZY_PIC_BASE){
+ SmallString<128> NameStr;
+ Mang->getNameWithPrefix(NameStr, GV, true);
+ NameStr += "$non_lazy_ptr";
+ MCSymbol *Sym = OutContext.GetOrCreateSymbol(NameStr.str());
+ MCSymbol *&StubSym = HiddenGVStubs[Sym];
+ if (StubSym == 0) {
+ NameStr.clear();
+ Mang->getNameWithPrefix(NameStr, GV, false);
+ StubSym = OutContext.GetOrCreateSymbol(NameStr.str());
+ }
+ } else if (MO.getTargetFlags() == X86II::MO_DARWIN_STUB) {
+ SmallString<128> NameStr;
+ Mang->getNameWithPrefix(NameStr, GV, true);
+ NameStr += "$stub";
+ MCSymbol *Sym = OutContext.GetOrCreateSymbol(NameStr.str());
+ MCSymbol *&StubSym = FnStubs[Sym];
+ if (StubSym == 0) {
+ NameStr.clear();
+ Mang->getNameWithPrefix(NameStr, GV, false);
+ StubSym = OutContext.GetOrCreateSymbol(NameStr.str());
+ }
}
- if (MO.getTargetFlags() == X86II::MO_PLT)
- O << "@PLT";
-
- if (needCloseParen)
- O << ')';
+ // If the name begins with a dollar-sign, enclose it in parens. We do this
+ // to avoid having it look like an integer immediate to the assembler.
+ if (Name[0] == '$')
+ O << '(' << Name << ')';
+ else
+ O << Name;
- return;
- }
- }
-}
-
-void X86ATTAsmPrinter::printOperand(const MachineInstr *MI, unsigned OpNo,
- const char *Modifier) {
- const MachineOperand &MO = MI->getOperand(OpNo);
- switch (MO.getType()) {
- default: assert(0 && "unknown operand type!");
- case MachineOperand::MO_Register: {
- assert(TargetRegisterInfo::isPhysicalRegister(MO.getReg()) &&
- "Virtual registers should not make it this far!");
- O << '%';
- unsigned Reg = MO.getReg();
- if (Modifier && strncmp(Modifier, "subreg", strlen("subreg")) == 0) {
- MVT VT = (strcmp(Modifier+6,"64") == 0) ?
- MVT::i64 : ((strcmp(Modifier+6, "32") == 0) ? MVT::i32 :
- ((strcmp(Modifier+6,"16") == 0) ? MVT::i16 : MVT::i8));
- Reg = getX86SubSuperRegister(Reg, VT);
- }
- O << TRI->getAsmName(Reg);
- return;
- }
-
- case MachineOperand::MO_Immediate:
- if (!Modifier || (strcmp(Modifier, "debug") && strcmp(Modifier, "mem")))
- O << '$';
- O << MO.getImm();
- return;
- case MachineOperand::MO_JumpTableIndex: {
- bool isMemOp = Modifier && !strcmp(Modifier, "mem");
- if (!isMemOp) O << '$';
- O << TAI->getPrivateGlobalPrefix() << "JTI" << getFunctionNumber() << '_'
- << MO.getIndex();
- break;
- }
- case MachineOperand::MO_ConstantPoolIndex: {
- bool isMemOp = Modifier && !strcmp(Modifier, "mem");
- if (!isMemOp) O << '$';
- O << TAI->getPrivateGlobalPrefix() << "CPI" << getFunctionNumber() << '_'
- << MO.getIndex();
-
printOffset(MO.getOffset());
break;
}
- case MachineOperand::MO_GlobalAddress: {
- bool isMemOp = Modifier && !strcmp(Modifier, "mem");
- const GlobalValue *GV = MO.getGlobal();
- std::string Name = Mang->getValueName(GV);
- decorateName(Name, GV);
-
- bool needCloseParen = false;
- if (!isMemOp)
- O << '$';
- else if (Name[0] == '$') {
- // The name begins with a dollar-sign. In order to avoid having it look
- // like an integer immediate to the assembler, enclose it in parens.
- O << '(';
- needCloseParen = true;
- }
-
- if (Subtarget->isPICStyleStub()) {
- // DARWIN/X86-32 in != static mode.
-
- // Link-once, declaration, or Weakly-linked global variables need
- // non-lazily-resolved stubs
- if (GV->isDeclaration() || GV->isWeakForLinker()) {
- if (GV->hasHiddenVisibility()) {
- if (!GV->isDeclaration() && !GV->hasCommonLinkage())
- // Definition is not definitely in the current translation unit.
- O << Name;
- else {
- HiddenGVStubs.insert(Name);
- printSuffixedName(Name, "$non_lazy_ptr");
- assert(MO.getTargetFlags() == 0);
- }
- } else {
- GVStubs.insert(Name);
- printSuffixedName(Name, "$non_lazy_ptr");
- assert(MO.getTargetFlags() == 0);
- }
- } else {
- O << Name;
+ case MachineOperand::MO_ExternalSymbol: {
+ std::string Name = Mang->makeNameProper(MO.getSymbolName());
+ if (MO.getTargetFlags() == X86II::MO_DARWIN_STUB) {
+ Name += "$stub";
+ MCSymbol *&StubSym = FnStubs[OutContext.GetOrCreateSymbol(Name)];
+ if (StubSym == 0) {
+ Name.erase(Name.end()-5, Name.end());
+ StubSym = OutContext.GetOrCreateSymbol(Name);
}
-
- if (TM.getRelocationModel() == Reloc::PIC_) {
- O << '-';
- PrintPICBaseSymbol();
- }
- } else {
- // Handle dllimport linkage.
- if (MO.getTargetFlags() == X86II::MO_DLLIMPORT)
- O << "__imp_";
- O << Name;
}
-
- printOffset(MO.getOffset());
-
- if (needCloseParen)
- O << ')';
+ // If the name begins with a dollar-sign, enclose it in parens. We do this
+ // to avoid having it look like an integer immediate to the assembler.
+ if (Name[0] == '$')
+ O << '(' << Name << ')';
+ else
+ O << Name;
break;
}
- case MachineOperand::MO_ExternalSymbol:
- /// NOTE: MO_ExternalSymbol in a non-pcrel_imm context is *only* generated
- /// by _GLOBAL_OFFSET_TABLE_ on X86-32. All others are call operands, which
- /// are pcrel_imm's.
- assert(!Subtarget->is64Bit() && !Subtarget->isPICStyleRIPRel());
- // These are never used as memory operands.
- assert(Modifier == 0 || strcmp(Modifier, "mem"));
- O << '$';
- O << TAI->getGlobalPrefix();
- O << MO.getSymbolName();
- break;
}
switch (MO.getTargetFlags()) {
default:
- assert(0 && "Unknown target flag on GV operand");
+ llvm_unreachable("Unknown target flag on GV operand");
case X86II::MO_NO_FLAG: // No flag.
- case X86II::MO_DLLIMPORT: // Prefix, not a suffix.
+ break;
+ case X86II::MO_DARWIN_NONLAZY:
+ case X86II::MO_DLLIMPORT:
+ case X86II::MO_DARWIN_STUB:
+ // These affect the name of the symbol, not any suffix.
break;
case X86II::MO_GOT_ABSOLUTE_ADDRESS:
O << " + [.-";
O << ']';
break;
case X86II::MO_PIC_BASE_OFFSET:
+ case X86II::MO_DARWIN_NONLAZY_PIC_BASE:
+ case X86II::MO_DARWIN_HIDDEN_NONLAZY_PIC_BASE:
O << '-';
PrintPICBaseSymbol();
break;
case X86II::MO_GOTPCREL: O << "@GOTPCREL"; break;
case X86II::MO_GOT: O << "@GOT"; break;
case X86II::MO_GOTOFF: O << "@GOTOFF"; break;
+ case X86II::MO_PLT: O << "@PLT"; break;
+ }
+}
+
+/// print_pcrel_imm - This is used to print an immediate value that ends up
+/// being encoded as a pc-relative value. These print slightly differently, for
+/// example, a $ is not emitted.
+void X86ATTAsmPrinter::print_pcrel_imm(const MachineInstr *MI, unsigned OpNo) {
+ const MachineOperand &MO = MI->getOperand(OpNo);
+ switch (MO.getType()) {
+ default: llvm_unreachable("Unknown pcrel immediate operand");
+ case MachineOperand::MO_Immediate:
+ O << MO.getImm();
+ return;
+ case MachineOperand::MO_MachineBasicBlock:
+ GetMBBSymbol(MO.getMBB()->getNumber())->print(O, MAI);
+ return;
+ case MachineOperand::MO_GlobalAddress:
+ case MachineOperand::MO_ExternalSymbol:
+ printSymbolOperand(MO);
+ return;
+ }
+}
+
+
+void X86ATTAsmPrinter::printOperand(const MachineInstr *MI, unsigned OpNo,
+ const char *Modifier) {
+ const MachineOperand &MO = MI->getOperand(OpNo);
+ switch (MO.getType()) {
+ default: llvm_unreachable("unknown operand type!");
+ case MachineOperand::MO_Register: {
+ assert(TargetRegisterInfo::isPhysicalRegister(MO.getReg()) &&
+ "Virtual registers should not make it this far!");
+ O << '%';
+ unsigned Reg = MO.getReg();
+ if (Modifier && strncmp(Modifier, "subreg", strlen("subreg")) == 0) {
+ EVT VT = (strcmp(Modifier+6,"64") == 0) ?
+ MVT::i64 : ((strcmp(Modifier+6, "32") == 0) ? MVT::i32 :
+ ((strcmp(Modifier+6,"16") == 0) ? MVT::i16 : MVT::i8));
+ Reg = getX86SubSuperRegister(Reg, VT);
+ }
+ O << TRI->getAsmName(Reg);
+ return;
+ }
+
+ case MachineOperand::MO_Immediate:
+ O << '$' << MO.getImm();
+ return;
+
+ case MachineOperand::MO_JumpTableIndex:
+ case MachineOperand::MO_ConstantPoolIndex:
+ case MachineOperand::MO_GlobalAddress:
+ case MachineOperand::MO_ExternalSymbol: {
+ O << '$';
+ printSymbolOperand(MO);
+ break;
+ }
}
}
} else {
assert(DispSpec.isGlobal() || DispSpec.isCPI() ||
DispSpec.isJTI() || DispSpec.isSymbol());
- printOperand(MI, Op+3, "mem");
+ printSymbolOperand(MI->getOperand(Op+3));
}
if (HasParenPart) {
void X86ATTAsmPrinter::printPICJumpTableSetLabel(unsigned uid,
const MachineBasicBlock *MBB) const {
- if (!TAI->getSetDirective())
+ if (!MAI->getSetDirective())
return;
// We don't need .set machinery if we have GOT-style relocations
if (Subtarget->isPICStyleGOT())
return;
- O << TAI->getSetDirective() << ' ' << TAI->getPrivateGlobalPrefix()
+ O << MAI->getSetDirective() << ' ' << MAI->getPrivateGlobalPrefix()
<< getFunctionNumber() << '_' << uid << "_set_" << MBB->getNumber() << ',';
- printBasicBlockLabel(MBB, false, false, false);
+
+ GetMBBSymbol(MBB->getNumber())->print(O, MAI);
+
if (Subtarget->isPICStyleRIPRel())
- O << '-' << TAI->getPrivateGlobalPrefix() << "JTI" << getFunctionNumber()
+ O << '-' << MAI->getPrivateGlobalPrefix() << "JTI" << getFunctionNumber()
<< '_' << uid << '\n';
else {
O << '-';
O << ':';
}
-
void X86ATTAsmPrinter::printPICJumpTableEntry(const MachineJumpTableInfo *MJTI,
const MachineBasicBlock *MBB,
- unsigned uid) const
-{
+ unsigned uid) const {
const char *JTEntryDirective = MJTI->getEntrySize() == 4 ?
- TAI->getData32bitsDirective() : TAI->getData64bitsDirective();
+ MAI->getData32bitsDirective() : MAI->getData64bitsDirective();
O << JTEntryDirective << ' ';
- if (TM.getRelocationModel() == Reloc::PIC_) {
- if (Subtarget->isPICStyleRIPRel() || Subtarget->isPICStyleStub()) {
- O << TAI->getPrivateGlobalPrefix() << getFunctionNumber()
- << '_' << uid << "_set_" << MBB->getNumber();
- } else if (Subtarget->isPICStyleGOT()) {
- printBasicBlockLabel(MBB, false, false, false);
- O << "@GOTOFF";
- } else
- assert(0 && "Don't know how to print MBB label for this PIC mode");
+ if (Subtarget->isPICStyleRIPRel() || Subtarget->isPICStyleStubPIC()) {
+ O << MAI->getPrivateGlobalPrefix() << getFunctionNumber()
+ << '_' << uid << "_set_" << MBB->getNumber();
+ } else if (Subtarget->isPICStyleGOT()) {
+ GetMBBSymbol(MBB->getNumber())->print(O, MAI);
+ O << "@GOTOFF";
} else
- printBasicBlockLabel(MBB, false, false, false);
+ GetMBBSymbol(MBB->getNumber())->print(O, MAI);
}
bool X86ATTAsmPrinter::printAsmMRegister(const MachineOperand &MO, char Mode) {
if (ExtraCode && ExtraCode[0]) {
if (ExtraCode[1] != 0) return true; // Unknown modifier.
+ const MachineOperand &MO = MI->getOperand(OpNo);
+
switch (ExtraCode[0]) {
default: return true; // Unknown modifier.
+ case 'a': // This is an address. Currently only 'i' and 'r' are expected.
+ if (MO.isImm()) {
+ O << MO.getImm();
+ return false;
+ }
+ if (MO.isGlobal() || MO.isCPI() || MO.isJTI() || MO.isSymbol()) {
+ printSymbolOperand(MO);
+ return false;
+ }
+ if (MO.isReg()) {
+ O << '(';
+ printOperand(MI, OpNo);
+ O << ')';
+ return false;
+ }
+ return true;
+
case 'c': // Don't print "$" before a global var name or constant.
- printOperand(MI, OpNo, "mem");
+ if (MO.isImm())
+ O << MO.getImm();
+ else if (MO.isGlobal() || MO.isCPI() || MO.isJTI() || MO.isSymbol())
+ printSymbolOperand(MO);
+ else
+ printOperand(MI, OpNo);
return false;
+
+ case 'A': // Print '*' before a register (it must be a register)
+ if (MO.isReg()) {
+ O << '*';
+ printOperand(MI, OpNo);
+ return false;
+ }
+ return true;
+
case 'b': // Print QImode register
case 'h': // Print QImode high register
case 'w': // Print HImode register
case 'k': // Print SImode register
case 'q': // Print DImode register
- if (MI->getOperand(OpNo).isReg())
- return printAsmMRegister(MI->getOperand(OpNo), ExtraCode[0]);
+ if (MO.isReg())
+ return printAsmMRegister(MO, ExtraCode[0]);
printOperand(MI, OpNo);
return false;
print_pcrel_imm(MI, OpNo);
return false;
- case 'n': { // Negate the immediate or print a '-' before the operand.
+ case 'n': // Negate the immediate or print a '-' before the operand.
// Note: this is a temporary solution. It should be handled target
// independently as part of the 'MC' work.
- const MachineOperand &MO = MI->getOperand(OpNo);
if (MO.isImm()) {
O << -MO.getImm();
return false;
}
O << '-';
}
- }
}
printOperand(MI, OpNo);
return false;
}
-static void lower_lea64_32mem(MCInst *MI, unsigned OpNo) {
- // Convert registers in the addr mode according to subreg64.
- for (unsigned i = 0; i != 4; ++i) {
- if (!MI->getOperand(i).isReg()) continue;
-
- unsigned Reg = MI->getOperand(i).getReg();
- if (Reg == 0) continue;
-
- MI->getOperand(i).setReg(getX86SubSuperRegister(Reg, MVT::i64));
- }
-}
+
/// printMachineInstruction -- Print out a single X86 LLVM instruction MI in
/// AT&T syntax to the current output stream.
void X86ATTAsmPrinter::printMachineInstruction(const MachineInstr *MI) {
++EmittedInsts;
- if (NewAsmPrinter) {
- if (MI->getOpcode() == TargetInstrInfo::INLINEASM) {
- O << "\t";
- printInlineAsm(MI);
- return;
- } else if (MI->isLabel()) {
- printLabel(MI);
- return;
- } else if (MI->getOpcode() == TargetInstrInfo::DECLARE) {
- printDeclare(MI);
- return;
- } else if (MI->getOpcode() == TargetInstrInfo::IMPLICIT_DEF) {
- printImplicitDef(MI);
- return;
- }
-
- O << "NEW: ";
- MCInst TmpInst;
-
- TmpInst.setOpcode(MI->getOpcode());
-
- for (unsigned i = 0, e = MI->getNumOperands(); i != e; ++i) {
- const MachineOperand &MO = MI->getOperand(i);
-
- MCOperand MCOp;
- if (MO.isReg()) {
- MCOp.MakeReg(MO.getReg());
- } else if (MO.isImm()) {
- MCOp.MakeImm(MO.getImm());
- } else if (MO.isMBB()) {
- MCOp.MakeMBBLabel(getFunctionNumber(), MO.getMBB()->getNumber());
- } else {
- assert(0 && "Unimp");
- }
-
- TmpInst.addOperand(MCOp);
- }
-
- switch (TmpInst.getOpcode()) {
- case X86::LEA64_32r:
- // Handle the 'subreg rewriting' for the lea64_32mem operand.
- lower_lea64_32mem(&TmpInst, 1);
- break;
- }
-
- // FIXME: Convert TmpInst.
- printInstruction(&TmpInst);
- O << "OLD: ";
- }
+ processDebugLoc(MI->getDebugLoc());
- // Call the autogenerated instruction printer routines.
- printInstruction(MI);
-}
-
-/// doInitialization
-bool X86ATTAsmPrinter::doInitialization(Module &M) {
- if (NewAsmPrinter) {
- Context = new MCContext();
- // FIXME: Send this to "O" instead of outs(). For now, we force it to
- // stdout to make it easy to compare.
- Streamer = createAsmStreamer(*Context, outs());
- }
+ printInstructionThroughMCStreamer(MI);
- return AsmPrinter::doInitialization(M);
+ if (VerboseAsm && !MI->getDebugLoc().isUnknown())
+ EmitComments(*MI);
+ O << '\n';
}
-void X86ATTAsmPrinter::printModuleLevelGV(const GlobalVariable* GVar) {
+void X86ATTAsmPrinter::PrintGlobalVariable(const GlobalVariable* GVar) {
const TargetData *TD = TM.getTargetData();
if (!GVar->hasInitializer())
return;
}
- std::string name = Mang->getValueName(GVar);
+ std::string name = Mang->getMangledName(GVar);
Constant *C = GVar->getInitializer();
- if (isa<MDNode>(C) || isa<MDString>(C))
- return;
const Type *Type = C->getType();
unsigned Size = TD->getTypeAllocSize(Type);
unsigned Align = TD->getPreferredAlignmentLog(GVar);
if (Subtarget->isTargetELF())
O << "\t.type\t" << name << ",@object\n";
- SwitchToSection(TAI->SectionForGlobal(GVar));
+
+ SectionKind GVKind = TargetLoweringObjectFile::getKindForGlobal(GVar, TM);
+ const MCSection *TheSection =
+ getObjFileLowering().SectionForGlobal(GVar, GVKind, Mang, TM);
+ OutStreamer.SwitchSection(TheSection);
+ // FIXME: get this stuff from section kind flags.
if (C->isNullValue() && !GVar->hasSection() &&
- !(Subtarget->isTargetDarwin() &&
- TAI->SectionKindForGlobal(GVar) == SectionKind::RODataMergeStr)) {
- // FIXME: This seems to be pretty darwin-specific
+ // Don't put things that should go in the cstring section into "comm".
+ !TheSection->getKind().isMergeableCString()) {
if (GVar->hasExternalLinkage()) {
- if (const char *Directive = TAI->getZeroFillDirective()) {
+ if (const char *Directive = MAI->getZeroFillDirective()) {
O << "\t.globl " << name << '\n';
O << Directive << "__DATA, __common, " << name << ", "
<< Size << ", " << Align << '\n';
(GVar->hasLocalLinkage() || GVar->isWeakForLinker())) {
if (Size == 0) Size = 1; // .comm Foo, 0 is undefined, avoid it.
- if (TAI->getLCOMMDirective() != NULL) {
+ if (MAI->getLCOMMDirective() != NULL) {
if (GVar->hasLocalLinkage()) {
- O << TAI->getLCOMMDirective() << name << ',' << Size;
+ O << MAI->getLCOMMDirective() << name << ',' << Size;
if (Subtarget->isTargetDarwin())
O << ',' << Align;
} else if (Subtarget->isTargetDarwin() && !GVar->hasCommonLinkage()) {
O << "\t.globl " << name << '\n'
- << TAI->getWeakDefDirective() << name << '\n';
+ << MAI->getWeakDefDirective() << name << '\n';
EmitAlignment(Align, GVar);
O << name << ":";
if (VerboseAsm) {
- O << "\t\t\t\t" << TAI->getCommentString() << ' ';
- PrintUnmangledNameSafely(GVar, O);
+ O.PadToColumn(MAI->getCommentColumn());
+ O << MAI->getCommentString() << ' ';
+ WriteAsOperand(O, GVar, /*PrintType=*/false, GVar->getParent());
}
O << '\n';
EmitGlobalConstant(C);
return;
} else {
- O << TAI->getCOMMDirective() << name << ',' << Size;
- if (TAI->getCOMMDirectiveTakesAlignment())
- O << ',' << (TAI->getAlignmentIsInBytes() ? (1 << Align) : Align);
+ O << MAI->getCOMMDirective() << name << ',' << Size;
+ if (MAI->getCOMMDirectiveTakesAlignment())
+ O << ',' << (MAI->getAlignmentIsInBytes() ? (1 << Align) : Align);
}
} else {
if (!Subtarget->isTargetCygMing()) {
if (GVar->hasLocalLinkage())
O << "\t.local\t" << name << '\n';
}
- O << TAI->getCOMMDirective() << name << ',' << Size;
- if (TAI->getCOMMDirectiveTakesAlignment())
- O << ',' << (TAI->getAlignmentIsInBytes() ? (1 << Align) : Align);
+ O << MAI->getCOMMDirective() << name << ',' << Size;
+ if (MAI->getCOMMDirectiveTakesAlignment())
+ O << ',' << (MAI->getAlignmentIsInBytes() ? (1 << Align) : Align);
}
if (VerboseAsm) {
- O << "\t\t" << TAI->getCommentString() << ' ';
- PrintUnmangledNameSafely(GVar, O);
+ O.PadToColumn(MAI->getCommentColumn());
+ O << MAI->getCommentString() << ' ';
+ WriteAsOperand(O, GVar, /*PrintType=*/false, GVar->getParent());
}
O << '\n';
return;
case GlobalValue::LinkOnceODRLinkage:
case GlobalValue::WeakAnyLinkage:
case GlobalValue::WeakODRLinkage:
+ case GlobalValue::LinkerPrivateLinkage:
if (Subtarget->isTargetDarwin()) {
O << "\t.globl " << name << '\n'
- << TAI->getWeakDefDirective() << name << '\n';
+ << MAI->getWeakDefDirective() << name << '\n';
} else if (Subtarget->isTargetCygMing()) {
O << "\t.globl\t" << name << "\n"
"\t.linkonce same_size\n";
case GlobalValue::InternalLinkage:
break;
default:
- assert(0 && "Unknown linkage type!");
+ llvm_unreachable("Unknown linkage type!");
}
EmitAlignment(Align, GVar);
O << name << ":";
if (VerboseAsm){
- O << "\t\t\t\t" << TAI->getCommentString() << ' ';
- PrintUnmangledNameSafely(GVar, O);
+ O.PadToColumn(MAI->getCommentColumn());
+ O << MAI->getCommentString() << ' ';
+ WriteAsOperand(O, GVar, /*PrintType=*/false, GVar->getParent());
}
O << '\n';
- if (TAI->hasDotTypeDotSizeDirective())
- O << "\t.size\t" << name << ", " << Size << '\n';
EmitGlobalConstant(C);
+
+ if (MAI->hasDotTypeDotSizeDirective())
+ O << "\t.size\t" << name << ", " << Size << '\n';
+}
+
+static int SortSymbolPair(const void *LHS, const void *RHS) {
+ MCSymbol *LHSS = ((const std::pair<MCSymbol*, MCSymbol*>*)LHS)->first;
+ MCSymbol *RHSS = ((const std::pair<MCSymbol*, MCSymbol*>*)RHS)->first;
+ return LHSS->getName().compare(RHSS->getName());
+}
+
+/// GetSortedStubs - Return the entries from a DenseMap in a deterministic
+/// sorted orer.
+static std::vector<std::pair<MCSymbol*, MCSymbol*> >
+GetSortedStubs(const DenseMap<MCSymbol*, MCSymbol*> &Map) {
+ assert(!Map.empty());
+ std::vector<std::pair<MCSymbol*, MCSymbol*> > List(Map.begin(), Map.end());
+ qsort(&List[0], List.size(), sizeof(List[0]), SortSymbolPair);
+ return List;
}
bool X86ATTAsmPrinter::doFinalization(Module &M) {
// Print out module-level global variables here.
for (Module::const_global_iterator I = M.global_begin(), E = M.global_end();
I != E; ++I) {
- printModuleLevelGV(I);
-
if (I->hasDLLExportLinkage())
- DLLExportedGVs.insert(Mang->makeNameProper(I->getName(),""));
+ DLLExportedGVs.insert(Mang->getMangledName(I));
}
if (Subtarget->isTargetDarwin()) {
- SwitchToDataSection("");
+ // All darwin targets use mach-o.
+ TargetLoweringObjectFileMachO &TLOFMacho =
+ static_cast<TargetLoweringObjectFileMachO &>(getObjFileLowering());
// Add the (possibly multiple) personalities to the set of global value
// stubs. Only referenced functions get into the Personalities list.
- if (TAI->doesSupportExceptionHandling() && MMI && !Subtarget->is64Bit()) {
+ if (MAI->doesSupportExceptionHandling() && MMI && !Subtarget->is64Bit()) {
const std::vector<Function*> &Personalities = MMI->getPersonalities();
for (unsigned i = 0, e = Personalities.size(); i != e; ++i) {
if (Personalities[i] == 0)
continue;
- std::string Name = Mang->getValueName(Personalities[i]);
- decorateName(Name, Personalities[i]);
- GVStubs.insert(Name);
+
+ SmallString<128> Name;
+ Mang->getNameWithPrefix(Name, Personalities[i], true /*private label*/);
+ Name += "$non_lazy_ptr";
+ MCSymbol *NLPName = OutContext.GetOrCreateSymbol(Name.str());
+
+ MCSymbol *&StubName = GVStubs[NLPName];
+ if (StubName != 0) continue;
+
+
+ Name.clear();
+ Mang->getNameWithPrefix(Name, Personalities[i], false);
+ StubName = OutContext.GetOrCreateSymbol(Name.str());
}
}
// Output stubs for dynamically-linked functions
if (!FnStubs.empty()) {
- for (StringSet<>::iterator I = FnStubs.begin(), E = FnStubs.end();
- I != E; ++I) {
- SwitchToDataSection("\t.section __IMPORT,__jump_table,symbol_stubs,"
- "self_modifying_code+pure_instructions,5", 0);
- const char *Name = I->getKeyData();
- printSuffixedName(Name, "$stub");
- O << ":\n"
- "\t.indirect_symbol " << Name << "\n"
- "\thlt ; hlt ; hlt ; hlt ; hlt\n";
+ const MCSection *TheSection =
+ TLOFMacho.getMachOSection("__IMPORT", "__jump_table",
+ MCSectionMachO::S_SYMBOL_STUBS |
+ MCSectionMachO::S_ATTR_SELF_MODIFYING_CODE |
+ MCSectionMachO::S_ATTR_PURE_INSTRUCTIONS,
+ 5, SectionKind::getMetadata());
+ OutStreamer.SwitchSection(TheSection);
+
+ std::vector<std::pair<MCSymbol*, MCSymbol*> > Stubs
+ = GetSortedStubs(FnStubs);
+ for (unsigned i = 0, e = Stubs.size(); i != e; ++i) {
+ Stubs[i].first->print(O, MAI);
+ O << ":\n" << "\t.indirect_symbol ";
+ // Get the MCSymbol without the $stub suffix.
+ Stubs[i].second->print(O, MAI);
+ O << "\n\thlt ; hlt ; hlt ; hlt ; hlt\n";
}
O << '\n';
}
// Output stubs for external and common global variables.
if (!GVStubs.empty()) {
- SwitchToDataSection(
- "\t.section __IMPORT,__pointers,non_lazy_symbol_pointers");
- for (StringSet<>::iterator I = GVStubs.begin(), E = GVStubs.end();
- I != E; ++I) {
- const char *Name = I->getKeyData();
- printSuffixedName(Name, "$non_lazy_ptr");
- O << ":\n\t.indirect_symbol " << Name << "\n\t.long\t0\n";
+ const MCSection *TheSection =
+ TLOFMacho.getMachOSection("__IMPORT", "__pointers",
+ MCSectionMachO::S_NON_LAZY_SYMBOL_POINTERS,
+ SectionKind::getMetadata());
+ OutStreamer.SwitchSection(TheSection);
+
+ std::vector<std::pair<MCSymbol*, MCSymbol*> > Stubs
+ = GetSortedStubs(GVStubs);
+ 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";
}
}
if (!HiddenGVStubs.empty()) {
- SwitchToSection(TAI->getDataSection());
+ OutStreamer.SwitchSection(getObjFileLowering().getDataSection());
EmitAlignment(2);
- for (StringSet<>::iterator I = HiddenGVStubs.begin(),
- E = HiddenGVStubs.end(); I != E; ++I) {
- const char *Name = I->getKeyData();
- printSuffixedName(Name, "$non_lazy_ptr");
- O << ":\n" << TAI->getData32bitsDirective() << Name << '\n';
+
+ std::vector<std::pair<MCSymbol*, MCSymbol*> > Stubs
+ = GetSortedStubs(HiddenGVStubs);
+ for (unsigned i = 0, e = Stubs.size(); i != e; ++i) {
+ Stubs[i].first->print(O, MAI);
+ O << ":\n" << MAI->getData32bitsDirective();
+ Stubs[i].second->print(O, MAI);
+ O << '\n';
}
}
O << "\t.subsections_via_symbols\n";
} else if (Subtarget->isTargetCygMing()) {
// Emit type information for external functions
- for (StringSet<>::iterator i = FnStubs.begin(), e = FnStubs.end();
+ for (StringSet<>::iterator i = CygMingStubs.begin(), e = CygMingStubs.end();
i != e; ++i) {
O << "\t.def\t " << i->getKeyData()
<< ";\t.scl\t" << COFF::C_EXT
// Output linker support code for dllexported globals on windows.
- if (!DLLExportedGVs.empty()) {
- SwitchToDataSection(".section .drectve");
+ if (!DLLExportedGVs.empty() || !DLLExportedFns.empty()) {
+ // dllexport symbols only exist on coff targets.
+ TargetLoweringObjectFileCOFF &TLOFMacho =
+ static_cast<TargetLoweringObjectFileCOFF&>(getObjFileLowering());
+
+ OutStreamer.SwitchSection(TLOFMacho.getCOFFSection(".section .drectve",true,
+ SectionKind::getMetadata()));
for (StringSet<>::iterator i = DLLExportedGVs.begin(),
e = DLLExportedGVs.end(); i != e; ++i)
O << "\t.ascii \" -export:" << i->getKeyData() << ",data\"\n";
- }
-
- if (!DLLExportedFns.empty()) {
- SwitchToDataSection(".section .drectve");
for (StringSet<>::iterator i = DLLExportedFns.begin(),
e = DLLExportedFns.end();
}
// Do common shutdown.
- bool Changed = AsmPrinter::doFinalization(M);
-
- if (NewAsmPrinter) {
- Streamer->Finish();
-
- delete Streamer;
- delete Context;
- Streamer = 0;
- Context = 0;
- }
-
- return Changed;
+ return AsmPrinter::doFinalization(M);
}
-// Include the auto-generated portion of the assembly writer.
-#include "X86GenAsmWriter.inc"
projects / oota-llvm.git / blobdiff