//
//===----------------------------------------------------------------------===//
-#include "llvm/MC/MCAsmInfo.h"
#include "llvm/MC/MCDwarf.h"
+#include "llvm/MC/MCAsmInfo.h"
+#include "llvm/MC/MCContext.h"
+#include "llvm/MC/MCObjectFileInfo.h"
+#include "llvm/MC/MCObjectWriter.h"
+#include "llvm/MC/MCRegisterInfo.h"
#include "llvm/MC/MCStreamer.h"
#include "llvm/MC/MCSymbol.h"
#include "llvm/MC/MCExpr.h"
-#include "llvm/MC/MCContext.h"
-#include "llvm/MC/MCObjectWriter.h"
#include "llvm/Support/Debug.h"
#include "llvm/Support/ErrorHandling.h"
#include "llvm/Support/raw_ostream.h"
-#include "llvm/Target/TargetAsmInfo.h"
#include "llvm/ADT/FoldingSet.h"
#include "llvm/ADT/SmallString.h"
#include "llvm/ADT/StringExtras.h"
MCOS->EmitLabel(SectionEnd);
// Switch back the the dwarf line section.
- MCOS->SwitchSection(context.getTargetAsmInfo().getDwarfLineSection());
+ MCOS->SwitchSection(context.getObjectFileInfo()->getDwarfLineSection());
const MCAsmInfo &asmInfo = MCOS->getContext().getAsmInfo();
MCOS->EmitDwarfAdvanceLineAddr(INT64_MAX, LastLabel, SectionEnd,
void MCDwarfFileTable::Emit(MCStreamer *MCOS) {
MCContext &context = MCOS->getContext();
// Switch to the section where the table will be emitted into.
- MCOS->SwitchSection(context.getTargetAsmInfo().getDwarfLineSection());
+ MCOS->SwitchSection(context.getObjectFileInfo()->getDwarfLineSection());
// Create a symbol at the beginning of this section.
MCSymbol *LineStartSym = context.CreateTempSymbol();
bool IsEH;
const MCSymbol *SectionStart;
public:
- FrameEmitterImpl(bool usingCFI, bool isEH, const MCSymbol *sectionStart) :
- CFAOffset(0), CIENum(0), UsingCFI(usingCFI), IsEH(isEH),
- SectionStart(sectionStart) {
- }
+ FrameEmitterImpl(bool usingCFI, bool isEH)
+ : CFAOffset(0), CIENum(0), UsingCFI(usingCFI), IsEH(isEH),
+ SectionStart(0) {}
+
+ void setSectionStart(const MCSymbol *Label) { SectionStart = Label; }
/// EmitCompactUnwind - Emit the unwind information in a compact way. If
/// we're successful, return 'true'. Otherwise, return 'false' and it will
bool FrameEmitterImpl::EmitCompactUnwind(MCStreamer &Streamer,
const MCDwarfFrameInfo &Frame) {
MCContext &Context = Streamer.getContext();
- const TargetAsmInfo &TAI = Context.getTargetAsmInfo();
+ const MCObjectFileInfo *MOFI = Context.getObjectFileInfo();
bool VerboseAsm = Streamer.isVerboseAsm();
// range-start range-length compact-unwind-enc personality-func lsda
if (Frame.Lsda)
Encoding |= 0x40000000;
- Streamer.SwitchSection(TAI.getCompactUnwindSection());
+ Streamer.SwitchSection(MOFI->getCompactUnwindSection());
// Range Start
- unsigned FDEEncoding = TAI.getFDEEncoding(UsingCFI);
+ unsigned FDEEncoding = MOFI->getFDEEncoding(UsingCFI);
unsigned Size = getSizeForEncoding(Streamer, FDEEncoding);
if (VerboseAsm) Streamer.AddComment("Range Start");
Streamer.EmitSymbolValue(Frame.Function, Size);
unsigned lsdaEncoding) {
MCContext &context = streamer.getContext();
const MCRegisterInfo &MRI = context.getRegisterInfo();
- const TargetAsmInfo &TAI = context.getTargetAsmInfo();
+ const MCObjectFileInfo *MOFI = context.getObjectFileInfo();
bool verboseAsm = streamer.isVerboseAsm();
MCSymbol *sectionStart;
- if (TAI.isFunctionEHFrameSymbolPrivate() || !IsEH)
+ if (MOFI->isFunctionEHFrameSymbolPrivate() || !IsEH)
sectionStart = context.CreateTempSymbol();
else
sectionStart = context.GetOrCreateSymbol(Twine("EH_frame") + Twine(CIENum));
EmitEncodingByte(streamer, lsdaEncoding, "LSDA Encoding");
// Encoding of the FDE pointers
- EmitEncodingByte(streamer, TAI.getFDEEncoding(UsingCFI),
+ EmitEncodingByte(streamer, MOFI->getFDEEncoding(UsingCFI),
"FDE Encoding");
}
MCContext &context = streamer.getContext();
MCSymbol *fdeStart = context.CreateTempSymbol();
MCSymbol *fdeEnd = context.CreateTempSymbol();
- const TargetAsmInfo &TAI = context.getTargetAsmInfo();
+ const MCObjectFileInfo *MOFI = context.getObjectFileInfo();
bool verboseAsm = streamer.isVerboseAsm();
- if (!TAI.isFunctionEHFrameSymbolPrivate() && IsEH) {
+ if (!MOFI->isFunctionEHFrameSymbolPrivate() && IsEH) {
MCSymbol *EHSym =
context.GetOrCreateSymbol(frame.Function->getName() + Twine(".eh"));
streamer.EmitEHSymAttributes(frame.Function, EHSym);
streamer.EmitSymbolValue(&cieStart, 4);
}
- unsigned fdeEncoding = TAI.getFDEEncoding(UsingCFI);
+ unsigned fdeEncoding = MOFI->getFDEEncoding(UsingCFI);
unsigned size = getSizeForEncoding(streamer, fdeEncoding);
// PC Begin
bool UsingCFI,
bool IsEH) {
MCContext &Context = Streamer.getContext();
- const TargetAsmInfo &TAI = Context.getTargetAsmInfo();
- const MCSection &Section = IsEH ? *TAI.getEHFrameSection() :
- *TAI.getDwarfFrameSection();
+ MCObjectFileInfo *MOFI =
+ const_cast<MCObjectFileInfo*>(Context.getObjectFileInfo());
+ FrameEmitterImpl Emitter(UsingCFI, IsEH);
+ SmallVector<MCDwarfFrameInfo, 8> RequiresFDE;
+ ArrayRef<MCDwarfFrameInfo> FrameArray;
+
+ if (IsEH && MOFI->getCompactUnwindSection()) {
+ for (unsigned i = 0, n = Streamer.getNumFrameInfos(); i < n; ++i) {
+ const MCDwarfFrameInfo &Frame = Streamer.getFrameInfo(i);
+ if (!Frame.CompactUnwindEncoding ||
+ !Emitter.EmitCompactUnwind(Streamer, Frame))
+ RequiresFDE.push_back(Streamer.getFrameInfo(i));
+ }
+
+ // Early exit if we don't need to emit FDEs.
+ if (RequiresFDE.empty()) return;
+ FrameArray = RequiresFDE;
+ } else {
+ FrameArray = Streamer.getFrameInfos();
+ }
+
+ const MCSection &Section = IsEH ? *MOFI->getEHFrameSection() :
+ *MOFI->getDwarfFrameSection();
Streamer.SwitchSection(&Section);
MCSymbol *SectionStart = Context.CreateTempSymbol();
Streamer.EmitLabel(SectionStart);
+ Emitter.setSectionStart(SectionStart);
MCSymbol *FDEEnd = NULL;
DenseMap<CIEKey, const MCSymbol*> CIEStarts;
- FrameEmitterImpl Emitter(UsingCFI, IsEH, SectionStart);
const MCSymbol *DummyDebugKey = NULL;
- for (unsigned i = 0, n = Streamer.getNumFrameInfos(); i < n; ++i) {
- const MCDwarfFrameInfo &Frame = Streamer.getFrameInfo(i);
- if (IsEH && TAI.getCompactUnwindSection() && Frame.CompactUnwindEncoding &&
- Emitter.EmitCompactUnwind(Streamer, Frame)) {
- FDEEnd = NULL;
- continue;
- }
-
+ for (unsigned i = 0, n = FrameArray.size(); i < n; ++i) {
+ const MCDwarfFrameInfo &Frame = FrameArray[i];
CIEKey Key(Frame.Personality, Frame.PersonalityEncoding,
Frame.LsdaEncoding);
const MCSymbol *&CIEStart = IsEH ? CIEStarts[Key] : DummyDebugKey;