#include "llvm/MC/MCCodeEmitter.h"
#include "llvm/MC/MCContext.h"
#include "llvm/MC/MCExpr.h"
+#include "llvm/MC/MCFixupKindInfo.h"
#include "llvm/MC/MCInst.h"
#include "llvm/MC/MCInstPrinter.h"
+#include "llvm/MC/MCRegisterInfo.h"
#include "llvm/MC/MCSectionMachO.h"
#include "llvm/MC/MCSymbol.h"
#include "llvm/ADT/OwningPtr.h"
#include "llvm/ADT/SmallString.h"
+#include "llvm/ADT/StringExtras.h"
#include "llvm/ADT/Twine.h"
#include "llvm/Support/ErrorHandling.h"
#include "llvm/Support/MathExtras.h"
#include "llvm/Support/Format.h"
#include "llvm/Support/FormattedStream.h"
+#include "llvm/Target/TargetAsmBackend.h"
+#include "llvm/Target/TargetAsmInfo.h"
+#include "llvm/Target/TargetLoweringObjectFile.h"
+#include <cctype>
using namespace llvm;
namespace {
class MCAsmStreamer : public MCStreamer {
+protected:
formatted_raw_ostream &OS;
const MCAsmInfo &MAI;
+private:
OwningPtr<MCInstPrinter> InstPrinter;
- MCCodeEmitter *Emitter;
-
+ OwningPtr<MCCodeEmitter> Emitter;
+ OwningPtr<TargetAsmBackend> AsmBackend;
+
SmallString<128> CommentToEmit;
raw_svector_ostream CommentStream;
- unsigned IsLittleEndian : 1;
unsigned IsVerboseAsm : 1;
unsigned ShowInst : 1;
+ unsigned UseLoc : 1;
+ unsigned UseCFI : 1;
+
+ enum EHSymbolFlags { EHGlobal = 1,
+ EHWeakDefinition = 1 << 1,
+ EHPrivateExtern = 1 << 2 };
+ DenseMap<const MCSymbol*, unsigned> FlagMap;
+
+ bool needsSet(const MCExpr *Value);
+
+ void EmitRegisterName(int64_t Register);
public:
MCAsmStreamer(MCContext &Context, formatted_raw_ostream &os,
- bool isLittleEndian, bool isVerboseAsm, MCInstPrinter *printer,
- MCCodeEmitter *emitter, bool showInst)
+ bool isVerboseAsm, bool useLoc, bool useCFI,
+ MCInstPrinter *printer, MCCodeEmitter *emitter,
+ TargetAsmBackend *asmbackend,
+ bool showInst)
: MCStreamer(Context), OS(os), MAI(Context.getAsmInfo()),
- InstPrinter(printer), Emitter(emitter), CommentStream(CommentToEmit),
- IsLittleEndian(isLittleEndian), IsVerboseAsm(isVerboseAsm),
- ShowInst(showInst) {
+ InstPrinter(printer), Emitter(emitter), AsmBackend(asmbackend),
+ CommentStream(CommentToEmit), IsVerboseAsm(isVerboseAsm),
+ ShowInst(showInst), UseLoc(useLoc), UseCFI(useCFI) {
if (InstPrinter && IsVerboseAsm)
InstPrinter->setCommentStream(CommentStream);
}
~MCAsmStreamer() {}
- bool isLittleEndian() const { return IsLittleEndian; }
-
inline void EmitEOL() {
// If we don't have any comments, just emit a \n.
if (!IsVerboseAsm) {
/// isVerboseAsm - Return true if this streamer supports verbose assembly at
/// all.
virtual bool isVerboseAsm() const { return IsVerboseAsm; }
-
+
/// hasRawTextSupport - We support EmitRawText.
virtual bool hasRawTextSupport() const { return true; }
/// @name MCStreamer Interface
/// @{
- virtual void SwitchSection(const MCSection *Section);
+ virtual void ChangeSection(const MCSection *Section);
- virtual void EmitLabel(MCSymbol *Symbol);
+ virtual void InitSections() {
+ // FIXME, this is MachO specific, but the testsuite
+ // expects this.
+ SwitchSection(getContext().getMachOSection("__TEXT", "__text",
+ MCSectionMachO::S_ATTR_PURE_INSTRUCTIONS,
+ 0, SectionKind::getText()));
+ }
+ virtual void EmitLabel(MCSymbol *Symbol);
+ virtual void EmitEHSymAttributes(const MCSymbol *Symbol,
+ MCSymbol *EHSymbol);
virtual void EmitAssemblerFlag(MCAssemblerFlag Flag);
+ virtual void EmitThumbFunc(MCSymbol *Func);
virtual void EmitAssignment(MCSymbol *Symbol, const MCExpr *Value);
+ virtual void EmitWeakReference(MCSymbol *Alias, const MCSymbol *Symbol);
+ virtual void EmitDwarfAdvanceLineAddr(int64_t LineDelta,
+ const MCSymbol *LastLabel,
+ const MCSymbol *Label,
+ unsigned PointerSize);
+ virtual void EmitDwarfAdvanceFrameAddr(const MCSymbol *LastLabel,
+ const MCSymbol *Label);
virtual void EmitSymbolAttribute(MCSymbol *Symbol, MCSymbolAttr Attribute);
/// @param Symbol - The common symbol to emit.
/// @param Size - The size of the common symbol.
virtual void EmitLocalCommonSymbol(MCSymbol *Symbol, uint64_t Size);
-
+
virtual void EmitZerofill(const MCSection *Section, MCSymbol *Symbol = 0,
unsigned Size = 0, unsigned ByteAlignment = 0);
virtual void EmitTBSSSymbol (const MCSection *Section, MCSymbol *Symbol,
uint64_t Size, unsigned ByteAlignment = 0);
-
+
virtual void EmitBytes(StringRef Data, unsigned AddrSpace);
- virtual void EmitValue(const MCExpr *Value, unsigned Size,unsigned AddrSpace);
- virtual void EmitIntValue(uint64_t Value, unsigned Size, unsigned AddrSpace);
+ virtual void EmitValueImpl(const MCExpr *Value, unsigned Size,
+ unsigned AddrSpace);
+ virtual void EmitIntValue(uint64_t Value, unsigned Size,
+ unsigned AddrSpace = 0);
+
+ virtual void EmitULEB128Value(const MCExpr *Value);
+
+ virtual void EmitSLEB128Value(const MCExpr *Value);
+
virtual void EmitGPRel32Value(const MCExpr *Value);
-
+
virtual void EmitFill(uint64_t NumBytes, uint8_t FillValue,
unsigned AddrSpace);
unsigned char Value = 0);
virtual void EmitFileDirective(StringRef Filename);
- virtual void EmitDwarfFileDirective(unsigned FileNo, StringRef Filename);
+ virtual bool EmitDwarfFileDirective(unsigned FileNo, StringRef Filename);
+ virtual void EmitDwarfLocDirective(unsigned FileNo, unsigned Line,
+ unsigned Column, unsigned Flags,
+ unsigned Isa, unsigned Discriminator,
+ StringRef FileName);
+
+ virtual void EmitCFISections(bool EH, bool Debug);
+ virtual void EmitCFIStartProc();
+ virtual void EmitCFIEndProc();
+ virtual void EmitCFIDefCfa(int64_t Register, int64_t Offset);
+ virtual void EmitCFIDefCfaOffset(int64_t Offset);
+ virtual void EmitCFIDefCfaRegister(int64_t Register);
+ virtual void EmitCFIOffset(int64_t Register, int64_t Offset);
+ virtual void EmitCFIPersonality(const MCSymbol *Sym, unsigned Encoding);
+ virtual void EmitCFILsda(const MCSymbol *Sym, unsigned Encoding);
+ virtual void EmitCFIRememberState();
+ virtual void EmitCFIRestoreState();
+ virtual void EmitCFISameValue(int64_t Register);
+ virtual void EmitCFIRelOffset(int64_t Register, int64_t Offset);
+ virtual void EmitCFIAdjustCfaOffset(int64_t Adjustment);
+
+ virtual void EmitWin64EHStartProc(const MCSymbol *Symbol);
+ virtual void EmitWin64EHEndProc();
+ virtual void EmitWin64EHStartChained();
+ virtual void EmitWin64EHEndChained();
+ virtual void EmitWin64EHHandler(const MCSymbol *Sym, bool Unwind,
+ bool Except);
+ virtual void EmitWin64EHHandlerData();
+ virtual void EmitWin64EHPushReg(unsigned Register);
+ virtual void EmitWin64EHSetFrame(unsigned Register, unsigned Offset);
+ virtual void EmitWin64EHAllocStack(unsigned Size);
+ virtual void EmitWin64EHSaveReg(unsigned Register, unsigned Offset);
+ virtual void EmitWin64EHSaveXMM(unsigned Register, unsigned Offset);
+ virtual void EmitWin64EHPushFrame(bool Code);
+ virtual void EmitWin64EHEndProlog();
+
+ virtual void EmitFnStart();
+ virtual void EmitFnEnd();
+ virtual void EmitCantUnwind();
+ virtual void EmitPersonality(const MCSymbol *Personality);
+ virtual void EmitHandlerData();
+ virtual void EmitSetFP(unsigned FpReg, unsigned SpReg, int64_t Offset = 0);
+ virtual void EmitPad(int64_t Offset);
+ virtual void EmitRegSave(const SmallVectorImpl<unsigned> &RegList, bool);
+
virtual void EmitInstruction(const MCInst &Inst);
-
- /// EmitRawText - If this file is backed by a assembly streamer, this dumps
+
+ /// EmitRawText - If this file is backed by an assembly streamer, this dumps
/// the specified string in the output .s file. This capability is
/// indicated by the hasRawTextSupport() predicate.
virtual void EmitRawText(StringRef String);
-
+
virtual void Finish();
-
+
/// @}
};
/// verbose assembly output is enabled.
void MCAsmStreamer::AddComment(const Twine &T) {
if (!IsVerboseAsm) return;
-
+
// Make sure that CommentStream is flushed.
CommentStream.flush();
-
+
T.toVector(CommentToEmit);
// Each comment goes on its own line.
CommentToEmit.push_back('\n');
-
+
// Tell the comment stream that the vector changed underneath it.
CommentStream.resync();
}
OS << '\n';
return;
}
-
+
CommentStream.flush();
StringRef Comments = CommentToEmit.str();
-
+
assert(Comments.back() == '\n' &&
"Comment array not newline terminated");
do {
OS.PadToColumn(MAI.getCommentColumn());
size_t Position = Comments.find('\n');
OS << MAI.getCommentString() << ' ' << Comments.substr(0, Position) << '\n';
-
+
Comments = Comments.substr(Position+1);
} while (!Comments.empty());
-
+
CommentToEmit.clear();
// Tell the comment stream that the vector changed underneath it.
CommentStream.resync();
return Value & ((uint64_t) (int64_t) -1 >> (64 - Bytes * 8));
}
-void MCAsmStreamer::SwitchSection(const MCSection *Section) {
+void MCAsmStreamer::ChangeSection(const MCSection *Section) {
assert(Section && "Cannot switch to a null section!");
- if (Section != CurSection) {
- CurSection = Section;
- Section->PrintSwitchToSection(MAI, OS);
- }
+ Section->PrintSwitchToSection(MAI, OS);
+}
+
+void MCAsmStreamer::EmitEHSymAttributes(const MCSymbol *Symbol,
+ MCSymbol *EHSymbol) {
+ if (UseCFI)
+ return;
+
+ unsigned Flags = FlagMap.lookup(Symbol);
+
+ if (Flags & EHGlobal)
+ EmitSymbolAttribute(EHSymbol, MCSA_Global);
+ if (Flags & EHWeakDefinition)
+ EmitSymbolAttribute(EHSymbol, MCSA_WeakDefinition);
+ if (Flags & EHPrivateExtern)
+ EmitSymbolAttribute(EHSymbol, MCSA_PrivateExtern);
}
void MCAsmStreamer::EmitLabel(MCSymbol *Symbol) {
assert(Symbol->isUndefined() && "Cannot define a symbol twice!");
- assert(!Symbol->isVariable() && "Cannot emit a variable symbol!");
- assert(CurSection && "Cannot emit before setting section!");
+ MCStreamer::EmitLabel(Symbol);
- OS << *Symbol << ":";
+ OS << *Symbol << MAI.getLabelSuffix();
EmitEOL();
- Symbol->setSection(*CurSection);
}
void MCAsmStreamer::EmitAssemblerFlag(MCAssemblerFlag Flag) {
switch (Flag) {
default: assert(0 && "Invalid flag!");
+ case MCAF_SyntaxUnified: OS << "\t.syntax unified"; break;
case MCAF_SubsectionsViaSymbols: OS << ".subsections_via_symbols"; break;
+ case MCAF_Code16: OS << "\t.code\t16"; break;
+ case MCAF_Code32: OS << "\t.code\t32"; break;
}
EmitEOL();
}
+void MCAsmStreamer::EmitThumbFunc(MCSymbol *Func) {
+ // This needs to emit to a temporary string to get properly quoted
+ // MCSymbols when they have spaces in them.
+ OS << "\t.thumb_func";
+ // Only Mach-O hasSubsectionsViaSymbols()
+ if (MAI.hasSubsectionsViaSymbols())
+ OS << '\t' << *Func;
+ EmitEOL();
+}
+
void MCAsmStreamer::EmitAssignment(MCSymbol *Symbol, const MCExpr *Value) {
OS << *Symbol << " = " << *Value;
EmitEOL();
Symbol->setVariableValue(Value);
}
+void MCAsmStreamer::EmitWeakReference(MCSymbol *Alias, const MCSymbol *Symbol) {
+ OS << ".weakref " << *Alias << ", " << *Symbol;
+ EmitEOL();
+}
+
+void MCAsmStreamer::EmitDwarfAdvanceLineAddr(int64_t LineDelta,
+ const MCSymbol *LastLabel,
+ const MCSymbol *Label,
+ unsigned PointerSize) {
+ EmitDwarfSetLineAddr(LineDelta, Label, PointerSize);
+}
+
+void MCAsmStreamer::EmitDwarfAdvanceFrameAddr(const MCSymbol *LastLabel,
+ const MCSymbol *Label) {
+ EmitIntValue(dwarf::DW_CFA_advance_loc4, 1);
+ const MCExpr *AddrDelta = BuildSymbolDiff(getContext(), Label, LastLabel);
+ AddrDelta = ForceExpAbs(AddrDelta);
+ EmitValue(AddrDelta, 4);
+}
+
+
void MCAsmStreamer::EmitSymbolAttribute(MCSymbol *Symbol,
MCSymbolAttr Attribute) {
switch (Attribute) {
case MCSA_ELF_TypeTLS: /// .type _foo, STT_TLS # aka @tls_object
case MCSA_ELF_TypeCommon: /// .type _foo, STT_COMMON # aka @common
case MCSA_ELF_TypeNoType: /// .type _foo, STT_NOTYPE # aka @notype
+ case MCSA_ELF_TypeGnuUniqueObject: /// .type _foo, @gnu_unique_object
assert(MAI.hasDotTypeDotSizeDirective() && "Symbol Attr not supported");
OS << "\t.type\t" << *Symbol << ','
<< ((MAI.getCommentString()[0] != '@') ? '@' : '%');
case MCSA_ELF_TypeTLS: OS << "tls_object"; break;
case MCSA_ELF_TypeCommon: OS << "common"; break;
case MCSA_ELF_TypeNoType: OS << "no_type"; break;
+ case MCSA_ELF_TypeGnuUniqueObject: OS << "gnu_unique_object"; break;
}
EmitEOL();
return;
case MCSA_Global: // .globl/.global
OS << MAI.getGlobalDirective();
+ FlagMap[Symbol] |= EHGlobal;
break;
case MCSA_Hidden: OS << "\t.hidden\t"; break;
case MCSA_IndirectSymbol: OS << "\t.indirect_symbol\t"; break;
case MCSA_LazyReference: OS << "\t.lazy_reference\t"; break;
case MCSA_Local: OS << "\t.local\t"; break;
case MCSA_NoDeadStrip: OS << "\t.no_dead_strip\t"; break;
- case MCSA_PrivateExtern: OS << "\t.private_extern\t"; break;
+ case MCSA_SymbolResolver: OS << "\t.symbol_resolver\t"; break;
+ case MCSA_PrivateExtern:
+ OS << "\t.private_extern\t";
+ FlagMap[Symbol] |= EHPrivateExtern;
+ break;
case MCSA_Protected: OS << "\t.protected\t"; break;
case MCSA_Reference: OS << "\t.reference\t"; break;
case MCSA_Weak: OS << "\t.weak\t"; break;
- case MCSA_WeakDefinition: OS << "\t.weak_definition\t"; break;
+ case MCSA_WeakDefinition:
+ OS << "\t.weak_definition\t";
+ FlagMap[Symbol] |= EHWeakDefinition;
+ break;
// .weak_reference
case MCSA_WeakReference: OS << MAI.getWeakRefDirective(); break;
case MCSA_WeakDefAutoPrivate: OS << "\t.weak_def_can_be_hidden\t"; break;
unsigned Size, unsigned ByteAlignment) {
// Note: a .zerofill directive does not switch sections.
OS << ".zerofill ";
-
+
// This is a mach-o specific directive.
const MCSectionMachO *MOSection = ((const MCSectionMachO*)Section);
OS << MOSection->getSegmentName() << "," << MOSection->getSectionName();
-
+
if (Symbol != NULL) {
OS << ',' << *Symbol << ',' << Size;
if (ByteAlignment != 0)
// Instead of using the Section we'll just use the shortcut.
// This is a mach-o specific directive and section.
OS << ".tbss " << *Symbol << ", " << Size;
-
+
// Output align if we have it. We default to 1 so don't bother printing
// that.
if (ByteAlignment > 1) OS << ", " << Log2_32(ByteAlignment);
-
+
EmitEOL();
}
static void PrintQuotedString(StringRef Data, raw_ostream &OS) {
OS << '"';
-
+
for (unsigned i = 0, e = Data.size(); i != e; ++i) {
unsigned char C = Data[i];
if (C == '"' || C == '\\') {
OS << '\\' << (char)C;
continue;
}
-
+
if (isprint((unsigned char)C)) {
OS << (char)C;
continue;
}
-
+
switch (C) {
case '\b': OS << "\\b"; break;
case '\f': OS << "\\f"; break;
break;
}
}
-
+
OS << '"';
}
void MCAsmStreamer::EmitBytes(StringRef Data, unsigned AddrSpace) {
- assert(CurSection && "Cannot emit contents before setting section!");
+ assert(getCurrentSection() && "Cannot emit contents before setting section!");
if (Data.empty()) return;
-
+
if (Data.size() == 1) {
OS << MAI.getData8bitsDirective(AddrSpace);
OS << (unsigned)(unsigned char)Data[0];
EmitEOL();
}
-/// EmitIntValue - Special case of EmitValue that avoids the client having
-/// to pass in a MCExpr for constant integers.
void MCAsmStreamer::EmitIntValue(uint64_t Value, unsigned Size,
unsigned AddrSpace) {
- assert(CurSection && "Cannot emit contents before setting section!");
+ EmitValue(MCConstantExpr::Create(Value, getContext()), Size, AddrSpace);
+}
+
+void MCAsmStreamer::EmitValueImpl(const MCExpr *Value, unsigned Size,
+ unsigned AddrSpace) {
+ assert(getCurrentSection() && "Cannot emit contents before setting section!");
const char *Directive = 0;
switch (Size) {
default: break;
Directive = MAI.getData64bitsDirective(AddrSpace);
// If the target doesn't support 64-bit data, emit as two 32-bit halves.
if (Directive) break;
- if (isLittleEndian()) {
- EmitIntValue((uint32_t)(Value >> 0 ), 4, AddrSpace);
- EmitIntValue((uint32_t)(Value >> 32), 4, AddrSpace);
+ int64_t IntValue;
+ if (!Value->EvaluateAsAbsolute(IntValue))
+ report_fatal_error("Don't know how to emit this value.");
+ if (getContext().getAsmInfo().isLittleEndian()) {
+ EmitIntValue((uint32_t)(IntValue >> 0 ), 4, AddrSpace);
+ EmitIntValue((uint32_t)(IntValue >> 32), 4, AddrSpace);
} else {
- EmitIntValue((uint32_t)(Value >> 32), 4, AddrSpace);
- EmitIntValue((uint32_t)(Value >> 0 ), 4, AddrSpace);
+ EmitIntValue((uint32_t)(IntValue >> 32), 4, AddrSpace);
+ EmitIntValue((uint32_t)(IntValue >> 0 ), 4, AddrSpace);
}
return;
}
-
+
assert(Directive && "Invalid size for machine code value!");
- OS << Directive << truncateToSize(Value, Size);
+ OS << Directive << *Value;
EmitEOL();
}
-void MCAsmStreamer::EmitValue(const MCExpr *Value, unsigned Size,
- unsigned AddrSpace) {
- assert(CurSection && "Cannot emit contents before setting section!");
- const char *Directive = 0;
- switch (Size) {
- default: break;
- case 1: Directive = MAI.getData8bitsDirective(AddrSpace); break;
- case 2: Directive = MAI.getData16bitsDirective(AddrSpace); break;
- case 4: Directive = MAI.getData32bitsDirective(AddrSpace); break;
- case 8: Directive = MAI.getData64bitsDirective(AddrSpace); break;
+void MCAsmStreamer::EmitULEB128Value(const MCExpr *Value) {
+ int64_t IntValue;
+ if (Value->EvaluateAsAbsolute(IntValue)) {
+ EmitULEB128IntValue(IntValue);
+ return;
}
-
- assert(Directive && "Invalid size for machine code value!");
- OS << Directive << *Value;
+ assert(MAI.hasLEB128() && "Cannot print a .uleb");
+ OS << ".uleb128 " << *Value;
+ EmitEOL();
+}
+
+void MCAsmStreamer::EmitSLEB128Value(const MCExpr *Value) {
+ int64_t IntValue;
+ if (Value->EvaluateAsAbsolute(IntValue)) {
+ EmitSLEB128IntValue(IntValue);
+ return;
+ }
+ assert(MAI.hasLEB128() && "Cannot print a .sleb");
+ OS << ".sleb128 " << *Value;
EmitEOL();
}
void MCAsmStreamer::EmitFill(uint64_t NumBytes, uint8_t FillValue,
unsigned AddrSpace) {
if (NumBytes == 0) return;
-
+
if (AddrSpace == 0)
if (const char *ZeroDirective = MAI.getZeroDirective()) {
OS << ZeroDirective << NumBytes;
case 4: OS << ".p2alignl "; break;
case 8: llvm_unreachable("Unsupported alignment size!");
}
-
+
if (MAI.getAlignmentIsInBytes())
OS << ByteAlignment;
else
OS << ", 0x";
OS.write_hex(truncateToSize(Value, ValueSize));
- if (MaxBytesToEmit)
+ if (MaxBytesToEmit)
OS << ", " << MaxBytesToEmit;
}
EmitEOL();
return;
}
-
+
// Non-power of two alignment. This is not widely supported by assemblers.
// FIXME: Parameterize this based on MAI.
switch (ValueSize) {
OS << ' ' << ByteAlignment;
OS << ", " << truncateToSize(Value, ValueSize);
- if (MaxBytesToEmit)
+ if (MaxBytesToEmit)
OS << ", " << MaxBytesToEmit;
EmitEOL();
}
EmitEOL();
}
-void MCAsmStreamer::EmitDwarfFileDirective(unsigned FileNo, StringRef Filename){
- OS << "\t.file\t" << FileNo << ' ';
- PrintQuotedString(Filename, OS);
+bool MCAsmStreamer::EmitDwarfFileDirective(unsigned FileNo, StringRef Filename){
+ if (UseLoc) {
+ OS << "\t.file\t" << FileNo << ' ';
+ PrintQuotedString(Filename, OS);
+ EmitEOL();
+ }
+ return this->MCStreamer::EmitDwarfFileDirective(FileNo, Filename);
+}
+
+void MCAsmStreamer::EmitDwarfLocDirective(unsigned FileNo, unsigned Line,
+ unsigned Column, unsigned Flags,
+ unsigned Isa,
+ unsigned Discriminator,
+ StringRef FileName) {
+ this->MCStreamer::EmitDwarfLocDirective(FileNo, Line, Column, Flags,
+ Isa, Discriminator, FileName);
+ if (!UseLoc)
+ return;
+
+ OS << "\t.loc\t" << FileNo << " " << Line << " " << Column;
+ if (Flags & DWARF2_FLAG_BASIC_BLOCK)
+ OS << " basic_block";
+ if (Flags & DWARF2_FLAG_PROLOGUE_END)
+ OS << " prologue_end";
+ if (Flags & DWARF2_FLAG_EPILOGUE_BEGIN)
+ OS << " epilogue_begin";
+
+ unsigned OldFlags = getContext().getCurrentDwarfLoc().getFlags();
+ if ((Flags & DWARF2_FLAG_IS_STMT) != (OldFlags & DWARF2_FLAG_IS_STMT)) {
+ OS << " is_stmt ";
+
+ if (Flags & DWARF2_FLAG_IS_STMT)
+ OS << "1";
+ else
+ OS << "0";
+ }
+
+ if (Isa)
+ OS << "isa " << Isa;
+ if (Discriminator)
+ OS << "discriminator " << Discriminator;
+
+ if (IsVerboseAsm) {
+ OS.PadToColumn(MAI.getCommentColumn());
+ OS << MAI.getCommentString() << ' ' << FileName << ':'
+ << Line << ':' << Column;
+ }
+ EmitEOL();
+}
+
+void MCAsmStreamer::EmitCFISections(bool EH, bool Debug) {
+ MCStreamer::EmitCFISections(EH, Debug);
+
+ if (!UseCFI)
+ return;
+
+ OS << "\t.cfi_sections ";
+ if (EH) {
+ OS << ".eh_frame";
+ if (Debug)
+ OS << ", .debug_frame";
+ } else if (Debug) {
+ OS << ".debug_frame";
+ }
+
+ EmitEOL();
+}
+
+void MCAsmStreamer::EmitCFIStartProc() {
+ MCStreamer::EmitCFIStartProc();
+
+ if (!UseCFI)
+ return;
+
+ OS << "\t.cfi_startproc";
+ EmitEOL();
+}
+
+void MCAsmStreamer::EmitCFIEndProc() {
+ MCStreamer::EmitCFIEndProc();
+
+ if (!UseCFI)
+ return;
+
+ OS << "\t.cfi_endproc";
+ EmitEOL();
+}
+
+void MCAsmStreamer::EmitRegisterName(int64_t Register) {
+ if (InstPrinter && !MAI.useDwarfRegNumForCFI()) {
+ const MCRegisterInfo &MRI = getContext().getRegisterInfo();
+ unsigned LLVMRegister = MRI.getLLVMRegNum(Register, true);
+ InstPrinter->printRegName(OS, LLVMRegister);
+ } else {
+ OS << Register;
+ }
+}
+
+void MCAsmStreamer::EmitCFIDefCfa(int64_t Register, int64_t Offset) {
+ MCStreamer::EmitCFIDefCfa(Register, Offset);
+
+ if (!UseCFI)
+ return;
+
+ OS << "\t.cfi_def_cfa ";
+ EmitRegisterName(Register);
+ OS << ", " << Offset;
+ EmitEOL();
+}
+
+void MCAsmStreamer::EmitCFIDefCfaOffset(int64_t Offset) {
+ MCStreamer::EmitCFIDefCfaOffset(Offset);
+
+ if (!UseCFI)
+ return;
+
+ OS << "\t.cfi_def_cfa_offset " << Offset;
+ EmitEOL();
+}
+
+void MCAsmStreamer::EmitCFIDefCfaRegister(int64_t Register) {
+ MCStreamer::EmitCFIDefCfaRegister(Register);
+
+ if (!UseCFI)
+ return;
+
+ OS << "\t.cfi_def_cfa_register ";
+ EmitRegisterName(Register);
+ EmitEOL();
+}
+
+void MCAsmStreamer::EmitCFIOffset(int64_t Register, int64_t Offset) {
+ this->MCStreamer::EmitCFIOffset(Register, Offset);
+
+ if (!UseCFI)
+ return;
+
+ OS << "\t.cfi_offset ";
+ EmitRegisterName(Register);
+ OS << ", " << Offset;
+ EmitEOL();
+}
+
+void MCAsmStreamer::EmitCFIPersonality(const MCSymbol *Sym,
+ unsigned Encoding) {
+ MCStreamer::EmitCFIPersonality(Sym, Encoding);
+
+ if (!UseCFI)
+ return;
+
+ OS << "\t.cfi_personality " << Encoding << ", " << *Sym;
+ EmitEOL();
+}
+
+void MCAsmStreamer::EmitCFILsda(const MCSymbol *Sym, unsigned Encoding) {
+ MCStreamer::EmitCFILsda(Sym, Encoding);
+
+ if (!UseCFI)
+ return;
+
+ OS << "\t.cfi_lsda " << Encoding << ", " << *Sym;
+ EmitEOL();
+}
+
+void MCAsmStreamer::EmitCFIRememberState() {
+ MCStreamer::EmitCFIRememberState();
+
+ if (!UseCFI)
+ return;
+
+ OS << "\t.cfi_remember_state";
+ EmitEOL();
+}
+
+void MCAsmStreamer::EmitCFIRestoreState() {
+ MCStreamer::EmitCFIRestoreState();
+
+ if (!UseCFI)
+ return;
+
+ OS << "\t.cfi_restore_state";
+ EmitEOL();
+}
+
+void MCAsmStreamer::EmitCFISameValue(int64_t Register) {
+ MCStreamer::EmitCFISameValue(Register);
+
+ if (!UseCFI)
+ return;
+
+ OS << "\t.cfi_same_value ";
+ EmitRegisterName(Register);
+ EmitEOL();
+}
+
+void MCAsmStreamer::EmitCFIRelOffset(int64_t Register, int64_t Offset) {
+ MCStreamer::EmitCFIRelOffset(Register, Offset);
+
+ if (!UseCFI)
+ return;
+
+ OS << "\t.cfi_rel_offset ";
+ EmitRegisterName(Register);
+ OS << ", " << Offset;
+ EmitEOL();
+}
+
+void MCAsmStreamer::EmitCFIAdjustCfaOffset(int64_t Adjustment) {
+ MCStreamer::EmitCFIAdjustCfaOffset(Adjustment);
+
+ if (!UseCFI)
+ return;
+
+ OS << "\t.cfi_adjust_cfa_offset " << Adjustment;
+ EmitEOL();
+}
+
+void MCAsmStreamer::EmitWin64EHStartProc(const MCSymbol *Symbol) {
+ MCStreamer::EmitWin64EHStartProc(Symbol);
+
+ OS << ".seh_proc " << *Symbol;
+ EmitEOL();
+}
+
+void MCAsmStreamer::EmitWin64EHEndProc() {
+ MCStreamer::EmitWin64EHEndProc();
+
+ OS << "\t.seh_endproc";
+ EmitEOL();
+}
+
+void MCAsmStreamer::EmitWin64EHStartChained() {
+ MCStreamer::EmitWin64EHStartChained();
+
+ OS << "\t.seh_startchained";
+ EmitEOL();
+}
+
+void MCAsmStreamer::EmitWin64EHEndChained() {
+ MCStreamer::EmitWin64EHEndChained();
+
+ OS << "\t.seh_endchained";
+ EmitEOL();
+}
+
+void MCAsmStreamer::EmitWin64EHHandler(const MCSymbol *Sym, bool Unwind,
+ bool Except) {
+ MCStreamer::EmitWin64EHHandler(Sym, Unwind, Except);
+
+ OS << "\t.seh_handler " << *Sym;
+ if (Unwind)
+ OS << ", @unwind";
+ if (Except)
+ OS << ", @except";
+ EmitEOL();
+}
+
+void MCAsmStreamer::EmitWin64EHHandlerData() {
+ MCStreamer::EmitWin64EHHandlerData();
+
+ // Switch sections. Don't call SwitchSection directly, because that will
+ // cause the section switch to be visible in the emitted assembly.
+ // We only do this so the section switch that terminates the handler
+ // data block is visible.
+ MCWin64EHUnwindInfo *CurFrame = getCurrentW64UnwindInfo();
+ StringRef suffix=MCWin64EHUnwindEmitter::GetSectionSuffix(CurFrame->Function);
+ const MCSection *xdataSect =
+ getContext().getTargetAsmInfo().getWin64EHTableSection(suffix);
+ if (xdataSect)
+ SwitchSectionNoChange(xdataSect);
+
+ OS << "\t.seh_handlerdata";
+ EmitEOL();
+}
+
+void MCAsmStreamer::EmitWin64EHPushReg(unsigned Register) {
+ MCStreamer::EmitWin64EHPushReg(Register);
+
+ OS << "\t.seh_pushreg " << Register;
+ EmitEOL();
+}
+
+void MCAsmStreamer::EmitWin64EHSetFrame(unsigned Register, unsigned Offset) {
+ MCStreamer::EmitWin64EHSetFrame(Register, Offset);
+
+ OS << "\t.seh_setframe " << Register << ", " << Offset;
+ EmitEOL();
+}
+
+void MCAsmStreamer::EmitWin64EHAllocStack(unsigned Size) {
+ MCStreamer::EmitWin64EHAllocStack(Size);
+
+ OS << "\t.seh_stackalloc " << Size;
+ EmitEOL();
+}
+
+void MCAsmStreamer::EmitWin64EHSaveReg(unsigned Register, unsigned Offset) {
+ MCStreamer::EmitWin64EHSaveReg(Register, Offset);
+
+ OS << "\t.seh_savereg " << Register << ", " << Offset;
+ EmitEOL();
+}
+
+void MCAsmStreamer::EmitWin64EHSaveXMM(unsigned Register, unsigned Offset) {
+ MCStreamer::EmitWin64EHSaveXMM(Register, Offset);
+
+ OS << "\t.seh_savexmm " << Register << ", " << Offset;
+ EmitEOL();
+}
+
+void MCAsmStreamer::EmitWin64EHPushFrame(bool Code) {
+ MCStreamer::EmitWin64EHPushFrame(Code);
+
+ OS << "\t.seh_pushframe";
+ if (Code)
+ OS << " @code";
+ EmitEOL();
+}
+
+void MCAsmStreamer::EmitWin64EHEndProlog(void) {
+ MCStreamer::EmitWin64EHEndProlog();
+
+ OS << "\t.seh_endprologue";
EmitEOL();
}
for (unsigned i = 0, e = Fixups.size(); i != e; ++i) {
MCFixup &F = Fixups[i];
- const MCFixupKindInfo &Info = Emitter->getFixupKindInfo(F.getKind());
+ const MCFixupKindInfo &Info = AsmBackend->getFixupKindInfo(F.getKind());
for (unsigned j = 0; j != Info.TargetSize; ++j) {
unsigned Index = F.getOffset() * 8 + Info.TargetOffset + j;
assert(Index < Code.size() * 8 && "Invalid offset in fixup!");
}
}
+ // FIXME: Note the fixup comments for Thumb2 are completely bogus since the
+ // high order halfword of a 32-bit Thumb2 instruction is emitted first.
OS << "encoding: [";
for (unsigned i = 0, e = Code.size(); i != e; ++i) {
if (i)
if (MapEntry == 0) {
OS << format("0x%02x", uint8_t(Code[i]));
} else {
- assert(Code[i] == 0 && "Encoder wrote into fixed up bit!");
- OS << char('A' + MapEntry - 1);
+ if (Code[i]) {
+ // FIXME: Some of the 8 bits require fix up.
+ OS << format("0x%02x", uint8_t(Code[i])) << '\''
+ << char('A' + MapEntry - 1) << '\'';
+ } else
+ OS << char('A' + MapEntry - 1);
}
} else {
// Otherwise, write out in binary.
OS << "0b";
for (unsigned j = 8; j--;) {
unsigned Bit = (Code[i] >> j) & 1;
- if (uint8_t MapEntry = FixupMap[i * 8 + j]) {
+
+ unsigned FixupBit;
+ if (getContext().getAsmInfo().isLittleEndian())
+ FixupBit = i * 8 + j;
+ else
+ FixupBit = i * 8 + (7-j);
+
+ if (uint8_t MapEntry = FixupMap[FixupBit]) {
assert(Bit == 0 && "Encoder wrote into fixed up bit!");
OS << char('A' + MapEntry - 1);
} else
for (unsigned i = 0, e = Fixups.size(); i != e; ++i) {
MCFixup &F = Fixups[i];
- const MCFixupKindInfo &Info = Emitter->getFixupKindInfo(F.getKind());
+ const MCFixupKindInfo &Info = AsmBackend->getFixupKindInfo(F.getKind());
OS << " fixup " << char('A' + i) << " - " << "offset: " << F.getOffset()
<< ", value: " << *F.getValue() << ", kind: " << Info.Name << "\n";
}
}
+void MCAsmStreamer::EmitFnStart() {
+ OS << "\t.fnstart";
+ EmitEOL();
+}
+
+void MCAsmStreamer::EmitFnEnd() {
+ OS << "\t.fnend";
+ EmitEOL();
+}
+
+void MCAsmStreamer::EmitCantUnwind() {
+ OS << "\t.cantunwind";
+ EmitEOL();
+}
+
+void MCAsmStreamer::EmitHandlerData() {
+ OS << "\t.handlerdata";
+ EmitEOL();
+}
+
+void MCAsmStreamer::EmitPersonality(const MCSymbol *Personality) {
+ OS << "\t.personality " << Personality->getName();
+ EmitEOL();
+}
+
+void MCAsmStreamer::EmitSetFP(unsigned FpReg, unsigned SpReg, int64_t Offset) {
+ OS << "\t.setfp\t";
+ InstPrinter->printRegName(OS, FpReg);
+ OS << ", ";
+ InstPrinter->printRegName(OS, SpReg);
+ if (Offset)
+ OS << ", #" << Offset;
+ EmitEOL();
+}
+
+void MCAsmStreamer::EmitPad(int64_t Offset) {
+ OS << "\t.pad\t#" << Offset;
+ EmitEOL();
+}
+
+void MCAsmStreamer::EmitRegSave(const SmallVectorImpl<unsigned> &RegList,
+ bool isVector) {
+ assert(RegList.size() && "RegList should not be empty");
+ if (isVector)
+ OS << "\t.vsave\t{";
+ else
+ OS << "\t.save\t{";
+
+ InstPrinter->printRegName(OS, RegList[0]);
+
+ for (unsigned i = 1, e = RegList.size(); i != e; ++i) {
+ OS << ", ";
+ InstPrinter->printRegName(OS, RegList[i]);
+ }
+
+ OS << "}";
+ EmitEOL();
+}
+
void MCAsmStreamer::EmitInstruction(const MCInst &Inst) {
- assert(CurSection && "Cannot emit contents before setting section!");
+ assert(getCurrentSection() && "Cannot emit contents before setting section!");
// Show the encoding in a comment if we have a code emitter.
if (Emitter)
EmitEOL();
}
-/// EmitRawText - If this file is backed by a assembly streamer, this dumps
+/// EmitRawText - If this file is backed by an assembly streamer, this dumps
/// the specified string in the output .s file. This capability is
/// indicated by the hasRawTextSupport() predicate.
void MCAsmStreamer::EmitRawText(StringRef String) {
}
void MCAsmStreamer::Finish() {
-}
+ // Dump out the dwarf file & directory tables and line tables.
+ if (getContext().hasDwarfFiles() && !UseLoc)
+ MCDwarfFileTable::Emit(this);
+ if (!UseCFI)
+ EmitFrames(false);
+}
MCStreamer *llvm::createAsmStreamer(MCContext &Context,
formatted_raw_ostream &OS,
- bool isLittleEndian,
- bool isVerboseAsm, MCInstPrinter *IP,
- MCCodeEmitter *CE, bool ShowInst) {
- return new MCAsmStreamer(Context, OS, isLittleEndian, isVerboseAsm,
- IP, CE, ShowInst);
+ bool isVerboseAsm, bool useLoc,
+ bool useCFI, MCInstPrinter *IP,
+ MCCodeEmitter *CE, TargetAsmBackend *TAB,
+ bool ShowInst) {
+ return new MCAsmStreamer(Context, OS, isVerboseAsm, useLoc, useCFI,
+ IP, CE, TAB, ShowInst);
}
projects / oota-llvm.git / blobdiff