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Move EH/Debug frame handling to the object streamer.

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Now that the asm streamer doesn't use it, the MCStreamer doesn't need to know
about it.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@208562 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Rafael Espindola 2014-05-12 14:02:44 +00:00
parent 6ec481443b
commit 23f2d7ae23
4 changed files with 27 additions and 23 deletions
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4
include/llvm/MC/MCObjectStreamer.h
View File

@ -35,6 +35,8 @@ class MCObjectStreamer : public MCStreamer {
MCAssembler *Assembler;
MCSectionData *CurSectionData;
MCSectionData::iterator CurInsertionPoint;
bool EmitEHFrame;
bool EmitDebugFrame;
virtual void EmitInstToData(const MCInst &Inst, const MCSubtargetInfo&) = 0;
void EmitCFIStartProcImpl(MCDwarfFrameInfo &Frame) override;
@ -57,6 +59,8 @@ public:
MCSymbolData &getOrCreateSymbolData(const MCSymbol *Symbol) {
return getAssembler().getOrCreateSymbolData(*Symbol);
}
void EmitFrames(MCAsmBackend *MAB);
void EmitCFISections(bool EH, bool Debug) override;
protected:
MCSectionData *getCurrentSectionData() const {

4
include/llvm/MC/MCStreamer.h
View File

@ -154,9 +154,6 @@ class MCStreamer {
MCStreamer(const MCStreamer &) LLVM_DELETED_FUNCTION;
MCStreamer &operator=(const MCStreamer &) LLVM_DELETED_FUNCTION;
bool EmitEHFrame;
bool EmitDebugFrame;
std::vector<MCDwarfFrameInfo> FrameInfos;
MCDwarfFrameInfo *getCurrentFrameInfo();
MCSymbol *EmitCFICommon();
@ -189,7 +186,6 @@ protected:
virtual void EmitCFIStartProcImpl(MCDwarfFrameInfo &Frame);
void RecordProcEnd(MCDwarfFrameInfo &Frame);
virtual void EmitCFIEndProcImpl(MCDwarfFrameInfo &CurFrame);
void EmitFrames(MCAsmBackend *MAB);
MCWin64EHUnwindInfo *getCurrentW64UnwindInfo() {
return CurrentW64UnwindInfo;

24
lib/MC/MCObjectStreamer.cpp
View File

@ -27,12 +27,13 @@ MCObjectStreamer::MCObjectStreamer(MCContext &Context, MCAsmBackend &TAB,
: MCStreamer(Context),
Assembler(new MCAssembler(Context, TAB, *Emitter_,
*TAB.createObjectWriter(OS), OS)),
CurSectionData(nullptr) {}
CurSectionData(nullptr), EmitEHFrame(true), EmitDebugFrame(false) {}
MCObjectStreamer::MCObjectStreamer(MCContext &Context, MCAsmBackend &TAB,
raw_ostream &OS, MCCodeEmitter *Emitter_,
MCAssembler *_Assembler)
: MCStreamer(Context), Assembler(_Assembler), CurSectionData(nullptr) {}
: MCStreamer(Context), Assembler(_Assembler), CurSectionData(nullptr),
EmitEHFrame(true), EmitDebugFrame(false) {}
MCObjectStreamer::~MCObjectStreamer() {
delete &Assembler->getBackend();
@ -46,9 +47,22 @@ void MCObjectStreamer::reset() {
Assembler->reset();
CurSectionData = nullptr;
CurInsertionPoint = MCSectionData::iterator();
EmitEHFrame = true;
EmitDebugFrame = false;
MCStreamer::reset();
}
void MCObjectStreamer::EmitFrames(MCAsmBackend *MAB) {
if (!getNumFrameInfos())
return;
if (EmitEHFrame)
MCDwarfFrameEmitter::Emit(*this, MAB, true);
if (EmitDebugFrame)
MCDwarfFrameEmitter::Emit(*this, MAB, false);
}
MCFragment *MCObjectStreamer::getCurrentFragment() const {
assert(getCurrentSectionData() && "No current section!");
@ -97,6 +111,12 @@ const MCExpr *MCObjectStreamer::AddValueSymbols(const MCExpr *Value) {
return Value;
}
void MCObjectStreamer::EmitCFISections(bool EH, bool Debug) {
MCStreamer::EmitCFISections(EH, Debug);
EmitEHFrame = EH;
EmitDebugFrame = Debug;
}
void MCObjectStreamer::EmitValueImpl(const MCExpr *Value, unsigned Size,
const SMLoc &Loc) {
MCDataFragment *DF = getOrCreateDataFragment();

18
lib/MC/MCStreamer.cpp
View File

@ -37,8 +37,7 @@ void MCTargetStreamer::finish() {}
void MCTargetStreamer::emitAssignment(MCSymbol *Symbol, const MCExpr *Value) {}
MCStreamer::MCStreamer(MCContext &Ctx)
: Context(Ctx), EmitEHFrame(true), EmitDebugFrame(false),
CurrentW64UnwindInfo(nullptr), LastSymbol(nullptr) {
: Context(Ctx), CurrentW64UnwindInfo(nullptr), LastSymbol(nullptr) {
SectionStack.push_back(std::pair<MCSectionSubPair, MCSectionSubPair>());
}
@ -51,8 +50,6 @@ void MCStreamer::reset() {
for (unsigned i = 0; i < getNumW64UnwindInfos(); ++i)
delete W64UnwindInfos[i];
W64UnwindInfos.clear();
EmitEHFrame = true;
EmitDebugFrame = false;
CurrentW64UnwindInfo = nullptr;
LastSymbol = nullptr;
SectionStack.clear();
@ -259,8 +256,6 @@ void MCStreamer::EmitCompactUnwindEncoding(uint32_t CompactUnwindEncoding) {
void MCStreamer::EmitCFISections(bool EH, bool Debug) {
assert(EH || Debug);
EmitEHFrame = EH;
EmitDebugFrame = Debug;
}
void MCStreamer::EmitCFIStartProc(bool IsSimple) {
@ -615,17 +610,6 @@ void MCStreamer::EmitRawText(const Twine &T) {
EmitRawTextImpl(T.toStringRef(Str));
}
void MCStreamer::EmitFrames(MCAsmBackend *MAB) {
if (!getNumFrameInfos())
return;
if (EmitEHFrame)
MCDwarfFrameEmitter::Emit(*this, MAB, true);
if (EmitDebugFrame)
MCDwarfFrameEmitter::Emit(*this, MAB, false);
}
void MCStreamer::EmitW64Tables() {
if (!getNumW64UnwindInfos())
return;