//===----------------------------------------------------------------------===//
#include "llvm/MC/MCStreamer.h"
+#include "llvm/ADT/OwningPtr.h"
+#include "llvm/ADT/SmallString.h"
+#include "llvm/ADT/StringExtras.h"
+#include "llvm/ADT/Twine.h"
+#include "llvm/MC/MCAsmBackend.h"
#include "llvm/MC/MCAsmInfo.h"
#include "llvm/MC/MCCodeEmitter.h"
#include "llvm/MC/MCContext.h"
#include "llvm/MC/MCFixupKindInfo.h"
#include "llvm/MC/MCInst.h"
#include "llvm/MC/MCInstPrinter.h"
+#include "llvm/MC/MCObjectFileInfo.h"
+#include "llvm/MC/MCRegisterInfo.h"
+#include "llvm/MC/MCSectionCOFF.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 "llvm/Support/MathExtras.h"
+#include "llvm/Support/PathV2.h"
#include <cctype>
using namespace llvm;
private:
OwningPtr<MCInstPrinter> InstPrinter;
OwningPtr<MCCodeEmitter> Emitter;
- OwningPtr<TargetAsmBackend> AsmBackend;
+ OwningPtr<MCAsmBackend> AsmBackend;
SmallString<128> CommentToEmit;
raw_svector_ostream CommentStream;
unsigned ShowInst : 1;
unsigned UseLoc : 1;
unsigned UseCFI : 1;
+ unsigned UseDwarfDirectory : 1;
enum EHSymbolFlags { EHGlobal = 1,
EHWeakDefinition = 1 << 1,
bool needsSet(const MCExpr *Value);
void EmitRegisterName(int64_t Register);
+ virtual void EmitCFIStartProcImpl(MCDwarfFrameInfo &Frame);
+ virtual void EmitCFIEndProcImpl(MCDwarfFrameInfo &Frame);
public:
MCAsmStreamer(MCContext &Context, formatted_raw_ostream &os,
bool isVerboseAsm, bool useLoc, bool useCFI,
+ bool useDwarfDirectory,
MCInstPrinter *printer, MCCodeEmitter *emitter,
- TargetAsmBackend *asmbackend,
+ MCAsmBackend *asmbackend,
bool showInst)
: MCStreamer(Context), OS(os), MAI(Context.getAsmInfo()),
InstPrinter(printer), Emitter(emitter), AsmBackend(asmbackend),
CommentStream(CommentToEmit), IsVerboseAsm(isVerboseAsm),
- ShowInst(showInst), UseLoc(useLoc), UseCFI(useCFI) {
+ ShowInst(showInst), UseLoc(useLoc), UseCFI(useCFI),
+ UseDwarfDirectory(useDwarfDirectory) {
if (InstPrinter && IsVerboseAsm)
InstPrinter->setCommentStream(CommentStream);
}
virtual void EmitEHSymAttributes(const MCSymbol *Symbol,
MCSymbol *EHSymbol);
virtual void EmitAssemblerFlag(MCAssemblerFlag Flag);
+ virtual void EmitDataRegion(MCDataRegionType Kind);
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);
+ const MCSymbol *Label,
+ unsigned PointerSize);
virtual void EmitDwarfAdvanceFrameAddr(const MCSymbol *LastLabel,
const MCSymbol *Label);
virtual void EmitCOFFSymbolStorageClass(int StorageClass);
virtual void EmitCOFFSymbolType(int Type);
virtual void EndCOFFSymbolDef();
+ virtual void EmitCOFFSecRel32(MCSymbol const *Symbol);
virtual void EmitELFSize(MCSymbol *Symbol, const MCExpr *Value);
virtual void EmitCommonSymbol(MCSymbol *Symbol, uint64_t Size,
unsigned ByteAlignment);
///
/// @param Symbol - The common symbol to emit.
/// @param Size - The size of the common symbol.
- virtual void EmitLocalCommonSymbol(MCSymbol *Symbol, uint64_t Size);
+ /// @param ByteAlignment - The alignment of the common symbol in bytes.
+ virtual void EmitLocalCommonSymbol(MCSymbol *Symbol, uint64_t Size,
+ unsigned ByteAlignment);
virtual void EmitZerofill(const MCSection *Section, MCSymbol *Symbol = 0,
- unsigned Size = 0, unsigned ByteAlignment = 0);
+ uint64_t Size = 0, unsigned ByteAlignment = 0);
virtual void EmitTBSSSymbol (const MCSection *Section, MCSymbol *Symbol,
uint64_t Size, unsigned ByteAlignment = 0);
virtual void EmitSLEB128Value(const MCExpr *Value);
+ virtual void EmitGPRel64Value(const MCExpr *Value);
+
virtual void EmitGPRel32Value(const MCExpr *Value);
virtual void EmitCodeAlignment(unsigned ByteAlignment,
unsigned MaxBytesToEmit = 0);
- virtual void EmitValueToOffset(const MCExpr *Offset,
+ virtual bool EmitValueToOffset(const MCExpr *Offset,
unsigned char Value = 0);
virtual void EmitFileDirective(StringRef Filename);
- virtual bool EmitDwarfFileDirective(unsigned FileNo, StringRef Filename);
+ virtual bool EmitDwarfFileDirective(unsigned FileNo, StringRef Directory,
+ 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 EmitCFISameValue(int64_t Register);
virtual void EmitCFIRelOffset(int64_t Register, int64_t Offset);
virtual void EmitCFIAdjustCfaOffset(int64_t Adjustment);
+ virtual void EmitCFISignalFrame();
+ virtual void EmitCFIUndefined(int64_t Register);
+ virtual void EmitCFIRegister(int64_t Register1, int64_t Register2);
virtual void EmitWin64EHStartProc(const MCSymbol *Symbol);
virtual void EmitWin64EHEndProc();
virtual void EmitPad(int64_t Offset);
virtual void EmitRegSave(const SmallVectorImpl<unsigned> &RegList, bool);
+ virtual void EmitTCEntry(const MCSymbol &S);
virtual void EmitInstruction(const MCInst &Inst);
/// indicated by the hasRawTextSupport() predicate.
virtual void EmitRawText(StringRef String);
- virtual void Finish();
+ virtual void FinishImpl();
/// @}
};
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;
+ case MCAF_Code16: OS << '\t'<< MAI.getCode16Directive(); break;
+ case MCAF_Code32: OS << '\t'<< MAI.getCode32Directive(); break;
+ case MCAF_Code64: OS << '\t'<< MAI.getCode64Directive(); break;
+ }
+ EmitEOL();
+}
+
+void MCAsmStreamer::EmitDataRegion(MCDataRegionType Kind) {
+ MCContext &Ctx = getContext();
+ const MCAsmInfo &MAI = Ctx.getAsmInfo();
+ if (!MAI.doesSupportDataRegionDirectives())
+ return;
+ switch (Kind) {
+ case MCDR_DataRegion: OS << "\t.data_region"; break;
+ case MCDR_DataRegionJT8: OS << "\t.data_region jt8"; break;
+ case MCDR_DataRegionJT16: OS << "\t.data_region jt16"; break;
+ case MCDR_DataRegionJT32: OS << "\t.data_region jt32"; break;
+ case MCDR_DataRegionEnd: OS << "\t.end_data_region"; break;
}
EmitEOL();
}
void MCAsmStreamer::EmitDwarfAdvanceLineAddr(int64_t LineDelta,
const MCSymbol *LastLabel,
- const MCSymbol *Label) {
- EmitDwarfSetLineAddr(LineDelta, Label,
- getContext().getTargetAsmInfo().getPointerSize());
+ const MCSymbol *Label,
+ unsigned PointerSize) {
+ EmitDwarfSetLineAddr(LineDelta, Label, PointerSize);
}
void MCAsmStreamer::EmitDwarfAdvanceFrameAddr(const MCSymbol *LastLabel,
void MCAsmStreamer::EmitSymbolAttribute(MCSymbol *Symbol,
MCSymbolAttr Attribute) {
switch (Attribute) {
- case MCSA_Invalid: assert(0 && "Invalid symbol attribute");
+ case MCSA_Invalid: llvm_unreachable("Invalid symbol attribute");
case MCSA_ELF_TypeFunction: /// .type _foo, STT_FUNC # aka @function
case MCSA_ELF_TypeIndFunction: /// .type _foo, STT_GNU_IFUNC
case MCSA_ELF_TypeObject: /// .type _foo, STT_OBJECT # aka @object
OS << "\t.type\t" << *Symbol << ','
<< ((MAI.getCommentString()[0] != '@') ? '@' : '%');
switch (Attribute) {
- default: assert(0 && "Unknown ELF .type");
+ default: llvm_unreachable("Unknown ELF .type");
case MCSA_ELF_TypeFunction: OS << "function"; break;
case MCSA_ELF_TypeIndFunction: OS << "gnu_indirect_function"; break;
case MCSA_ELF_TypeObject: OS << "object"; break;
EmitEOL();
}
+void MCAsmStreamer::EmitCOFFSecRel32(MCSymbol const *Symbol) {
+ OS << "\t.secrel32\t" << *Symbol << '\n';
+ EmitEOL();
+}
+
void MCAsmStreamer::EmitELFSize(MCSymbol *Symbol, const MCExpr *Value) {
assert(MAI.hasDotTypeDotSizeDirective());
OS << "\t.size\t" << *Symbol << ", " << *Value << '\n';
///
/// @param Symbol - The common symbol to emit.
/// @param Size - The size of the common symbol.
-void MCAsmStreamer::EmitLocalCommonSymbol(MCSymbol *Symbol, uint64_t Size) {
- assert(MAI.hasLCOMMDirective() && "Doesn't have .lcomm, can't emit it!");
+void MCAsmStreamer::EmitLocalCommonSymbol(MCSymbol *Symbol, uint64_t Size,
+ unsigned ByteAlign) {
OS << "\t.lcomm\t" << *Symbol << ',' << Size;
+ if (ByteAlign > 1) {
+ switch (MAI.getLCOMMDirectiveAlignmentType()) {
+ case LCOMM::NoAlignment:
+ llvm_unreachable("alignment not supported on .lcomm!");
+ case LCOMM::ByteAlignment:
+ OS << ',' << ByteAlign;
+ break;
+ case LCOMM::Log2Alignment:
+ assert(isPowerOf2_32(ByteAlign) && "alignment must be a power of 2");
+ OS << ',' << Log2_32(ByteAlign);
+ break;
+ }
+ }
EmitEOL();
}
void MCAsmStreamer::EmitZerofill(const MCSection *Section, MCSymbol *Symbol,
- unsigned Size, unsigned ByteAlignment) {
+ uint64_t Size, unsigned ByteAlignment) {
// Note: a .zerofill directive does not switch sections.
OS << ".zerofill ";
int64_t IntValue;
if (!Value->EvaluateAsAbsolute(IntValue))
report_fatal_error("Don't know how to emit this value.");
- if (getContext().getTargetAsmInfo().isLittleEndian()) {
+ if (getContext().getAsmInfo().isLittleEndian()) {
EmitIntValue((uint32_t)(IntValue >> 0 ), 4, AddrSpace);
EmitIntValue((uint32_t)(IntValue >> 32), 4, AddrSpace);
} else {
EmitEOL();
}
+void MCAsmStreamer::EmitGPRel64Value(const MCExpr *Value) {
+ assert(MAI.getGPRel64Directive() != 0);
+ OS << MAI.getGPRel64Directive() << *Value;
+ EmitEOL();
+}
+
void MCAsmStreamer::EmitGPRel32Value(const MCExpr *Value) {
assert(MAI.getGPRel32Directive() != 0);
OS << MAI.getGPRel32Directive() << *Value;
1, MaxBytesToEmit);
}
-void MCAsmStreamer::EmitValueToOffset(const MCExpr *Offset,
+bool MCAsmStreamer::EmitValueToOffset(const MCExpr *Offset,
unsigned char Value) {
// FIXME: Verify that Offset is associated with the current section.
OS << ".org " << *Offset << ", " << (unsigned) Value;
EmitEOL();
+ return false;
}
EmitEOL();
}
-bool MCAsmStreamer::EmitDwarfFileDirective(unsigned FileNo, StringRef Filename){
+bool MCAsmStreamer::EmitDwarfFileDirective(unsigned FileNo, StringRef Directory,
+ StringRef Filename) {
+ if (!UseDwarfDirectory && !Directory.empty()) {
+ if (sys::path::is_absolute(Filename))
+ return EmitDwarfFileDirective(FileNo, "", Filename);
+
+ SmallString<128> FullPathName = Directory;
+ sys::path::append(FullPathName, Filename);
+ return EmitDwarfFileDirective(FileNo, "", FullPathName);
+ }
+
if (UseLoc) {
OS << "\t.file\t" << FileNo << ' ';
+ if (!Directory.empty()) {
+ PrintQuotedString(Directory, OS);
+ OS << ' ';
+ }
PrintQuotedString(Filename, OS);
EmitEOL();
}
- return this->MCStreamer::EmitDwarfFileDirective(FileNo, Filename);
+ return this->MCStreamer::EmitDwarfFileDirective(FileNo, Directory, Filename);
}
void MCAsmStreamer::EmitDwarfLocDirective(unsigned FileNo, unsigned Line,
if (IsVerboseAsm) {
OS.PadToColumn(MAI.getCommentColumn());
- OS << MAI.getCommentString() << ' ' << FileName << ':'
+ OS << MAI.getCommentString() << ' ' << FileName << ':'
<< Line << ':' << Column;
}
EmitEOL();
EmitEOL();
}
-void MCAsmStreamer::EmitCFIStartProc() {
- MCStreamer::EmitCFIStartProc();
-
- if (!UseCFI)
+void MCAsmStreamer::EmitCFIStartProcImpl(MCDwarfFrameInfo &Frame) {
+ if (!UseCFI) {
+ RecordProcStart(Frame);
return;
+ }
OS << "\t.cfi_startproc";
EmitEOL();
}
-void MCAsmStreamer::EmitCFIEndProc() {
- MCStreamer::EmitCFIEndProc();
-
- if (!UseCFI)
+void MCAsmStreamer::EmitCFIEndProcImpl(MCDwarfFrameInfo &Frame) {
+ if (!UseCFI) {
+ RecordProcEnd(Frame);
return;
+ }
+
+ // Put a dummy non-null value in Frame.End to mark that this frame has been
+ // closed.
+ Frame.End = (MCSymbol *) 1;
OS << "\t.cfi_endproc";
EmitEOL();
}
void MCAsmStreamer::EmitRegisterName(int64_t Register) {
- if (InstPrinter) {
- const TargetAsmInfo &asmInfo = getContext().getTargetAsmInfo();
- unsigned LLVMRegister = asmInfo.getLLVMRegNum(Register, true);
+ if (InstPrinter && !MAI.useDwarfRegNumForCFI()) {
+ const MCRegisterInfo &MRI = getContext().getRegisterInfo();
+ unsigned LLVMRegister = MRI.getLLVMRegNum(Register, true);
InstPrinter->printRegName(OS, LLVMRegister);
} else {
OS << Register;
EmitEOL();
}
+void MCAsmStreamer::EmitCFISignalFrame() {
+ MCStreamer::EmitCFISignalFrame();
+
+ if (!UseCFI)
+ return;
+
+ OS << "\t.cfi_signal_frame";
+ EmitEOL();
+}
+
+void MCAsmStreamer::EmitCFIUndefined(int64_t Register) {
+ MCStreamer::EmitCFIUndefined(Register);
+
+ if (!UseCFI)
+ return;
+
+ OS << "\t.cfi_undefined " << Register;
+ EmitEOL();
+}
+
+void MCAsmStreamer::EmitCFIRegister(int64_t Register1, int64_t Register2) {
+ MCStreamer::EmitCFIRegister(Register1, Register2);
+
+ if (!UseCFI)
+ return;
+
+ OS << "\t.cfi_register " << Register1 << ", " << Register2;
+ EmitEOL();
+}
+
void MCAsmStreamer::EmitWin64EHStartProc(const MCSymbol *Symbol) {
MCStreamer::EmitWin64EHStartProc(Symbol);
EmitEOL();
}
+static const MCSection *getWin64EHTableSection(StringRef suffix,
+ MCContext &context) {
+ // FIXME: This doesn't belong in MCObjectFileInfo. However,
+ /// this duplicate code in MCWin64EH.cpp.
+ if (suffix == "")
+ return context.getObjectFileInfo()->getXDataSection();
+ return context.getCOFFSection((".xdata"+suffix).str(),
+ COFF::IMAGE_SCN_CNT_INITIALIZED_DATA |
+ COFF::IMAGE_SCN_MEM_READ |
+ COFF::IMAGE_SCN_MEM_WRITE,
+ SectionKind::getDataRel());
+}
+
void MCAsmStreamer::EmitWin64EHHandlerData() {
MCStreamer::EmitWin64EHHandlerData();
// data block is visible.
MCWin64EHUnwindInfo *CurFrame = getCurrentW64UnwindInfo();
StringRef suffix=MCWin64EHUnwindEmitter::GetSectionSuffix(CurFrame->Function);
- const MCSection *xdataSect =
- getContext().getTargetAsmInfo().getWin64EHTableSection(suffix);
+ const MCSection *xdataSect = getWin64EHTableSection(suffix, getContext());
if (xdataSect)
SwitchSectionNoChange(xdataSect);
}
}
- // FIXME: Node the fixup comments for Thumb2 are completely bogus since the
+ // 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) {
unsigned Bit = (Code[i] >> j) & 1;
unsigned FixupBit;
- if (getContext().getTargetAsmInfo().isLittleEndian())
+ if (getContext().getAsmInfo().isLittleEndian())
FixupBit = i * 8 + j;
else
FixupBit = i * 8 + (7-j);
EmitEOL();
}
+void MCAsmStreamer::EmitTCEntry(const MCSymbol &S) {
+ OS << "\t.tc ";
+ OS << S.getName();
+ OS << "[TC],";
+ OS << S.getName();
+ EmitEOL();
+}
+
void MCAsmStreamer::EmitInstruction(const MCInst &Inst) {
assert(getCurrentSection() && "Cannot emit contents before setting section!");
// If we have an AsmPrinter, use that to print, otherwise print the MCInst.
if (InstPrinter)
- InstPrinter->printInst(&Inst, OS);
+ InstPrinter->printInst(&Inst, OS, "");
else
Inst.print(OS, &MAI);
EmitEOL();
EmitEOL();
}
-void MCAsmStreamer::Finish() {
+void MCAsmStreamer::FinishImpl() {
+ // FIXME: This header is duplicated with MCObjectStreamer
// Dump out the dwarf file & directory tables and line tables.
+ const MCSymbol *LineSectionSymbol = NULL;
if (getContext().hasDwarfFiles() && !UseLoc)
- MCDwarfFileTable::Emit(this);
+ LineSectionSymbol = MCDwarfFileTable::Emit(this);
+
+ // If we are generating dwarf for assembly source files dump out the sections.
+ if (getContext().getGenDwarfForAssembly())
+ MCGenDwarfInfo::Emit(this, LineSectionSymbol);
if (!UseCFI)
EmitFrames(false);
MCStreamer *llvm::createAsmStreamer(MCContext &Context,
formatted_raw_ostream &OS,
bool isVerboseAsm, bool useLoc,
- bool useCFI, MCInstPrinter *IP,
- MCCodeEmitter *CE, TargetAsmBackend *TAB,
- bool ShowInst) {
+ bool useCFI, bool useDwarfDirectory,
+ MCInstPrinter *IP, MCCodeEmitter *CE,
+ MCAsmBackend *MAB, bool ShowInst) {
return new MCAsmStreamer(Context, OS, isVerboseAsm, useLoc, useCFI,
- IP, CE, TAB, ShowInst);
+ useDwarfDirectory, IP, CE, MAB, ShowInst);
}
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