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-rw-r--r--include/llvm/MC/MCELFStreamer.h20
-rw-r--r--include/llvm/MC/MCObjectStreamer.h8
-rw-r--r--include/llvm/MC/MCStreamer.h91
3 files changed, 76 insertions, 43 deletions
diff --git a/include/llvm/MC/MCELFStreamer.h b/include/llvm/MC/MCELFStreamer.h
index 0f45a93f95..8dbe337b0f 100644
--- a/include/llvm/MC/MCELFStreamer.h
+++ b/include/llvm/MC/MCELFStreamer.h
@@ -29,13 +29,15 @@ class raw_ostream;
class MCELFStreamer : public MCObjectStreamer {
public:
- MCELFStreamer(MCContext &Context, MCAsmBackend &TAB, raw_ostream &OS,
- MCCodeEmitter *Emitter)
- : MCObjectStreamer(Context, TAB, OS, Emitter) {}
+ MCELFStreamer(MCContext &Context, MCTargetStreamer *TargetStreamer,
+ MCAsmBackend &TAB, raw_ostream &OS, MCCodeEmitter *Emitter)
+ : MCObjectStreamer(Context, TargetStreamer, TAB, OS, Emitter) {}
- MCELFStreamer(MCContext &Context, MCAsmBackend &TAB, raw_ostream &OS,
- MCCodeEmitter *Emitter, MCAssembler *Assembler)
- : MCObjectStreamer(Context, TAB, OS, Emitter, Assembler) {}
+ MCELFStreamer(MCContext &Context, MCTargetStreamer *TargetStreamer,
+ MCAsmBackend &TAB, raw_ostream &OS, MCCodeEmitter *Emitter,
+ MCAssembler *Assembler)
+ : MCObjectStreamer(Context, TargetStreamer, TAB, OS, Emitter, Assembler) {
+ }
virtual ~MCELFStreamer();
@@ -75,8 +77,6 @@ public:
virtual void EmitFileDirective(StringRef Filename);
- virtual void EmitTCEntry(const MCSymbol &S);
-
virtual void EmitValueToAlignment(unsigned, int64_t, unsigned, unsigned);
virtual void Flush();
@@ -111,10 +111,6 @@ private:
void SetSectionBss();
};
-MCELFStreamer *createMipsELFStreamer(MCContext &Context, MCAsmBackend &TAB,
- raw_ostream &OS, MCCodeEmitter *Emitter,
- bool RelaxAll, bool NoExecStack);
-
MCELFStreamer *createARMELFStreamer(MCContext &Context, MCAsmBackend &TAB,
raw_ostream &OS, MCCodeEmitter *Emitter,
bool RelaxAll, bool NoExecStack,
diff --git a/include/llvm/MC/MCObjectStreamer.h b/include/llvm/MC/MCObjectStreamer.h
index f6a7e713c4..5667544301 100644
--- a/include/llvm/MC/MCObjectStreamer.h
+++ b/include/llvm/MC/MCObjectStreamer.h
@@ -40,10 +40,12 @@ class MCObjectStreamer : public MCStreamer {
virtual void EmitCFIEndProcImpl(MCDwarfFrameInfo &Frame);
protected:
- MCObjectStreamer(MCContext &Context, MCAsmBackend &TAB, raw_ostream &_OS,
+ MCObjectStreamer(MCContext &Context, MCTargetStreamer *TargetStreamer,
+ MCAsmBackend &TAB, raw_ostream &_OS,
MCCodeEmitter *_Emitter);
- MCObjectStreamer(MCContext &Context, MCAsmBackend &TAB, raw_ostream &_OS,
- MCCodeEmitter *_Emitter, MCAssembler *_Assembler);
+ MCObjectStreamer(MCContext &Context, MCTargetStreamer *TargetStreamer,
+ MCAsmBackend &TAB, raw_ostream &_OS, MCCodeEmitter *_Emitter,
+ MCAssembler *_Assembler);
~MCObjectStreamer();
public:
diff --git a/include/llvm/MC/MCStreamer.h b/include/llvm/MC/MCStreamer.h
index 3cd5c773c1..10fc69ef84 100644
--- a/include/llvm/MC/MCStreamer.h
+++ b/include/llvm/MC/MCStreamer.h
@@ -31,6 +31,7 @@ class MCExpr;
class MCInst;
class MCInstPrinter;
class MCSection;
+class MCStreamer;
class MCSymbol;
class StringRef;
class Twine;
@@ -39,6 +40,55 @@ class formatted_raw_ostream;
typedef std::pair<const MCSection *, const MCExpr *> MCSectionSubPair;
+/// Target specific streamer interface. This is used so that targets can
+/// implement support for target specific assembly directives.
+///
+/// If target foo wants to use this, it should implement 3 classes:
+/// * FooTargetStreamer : public MCTargetStreamer
+/// * FooTargetAsmSreamer : public FooTargetStreamer
+/// * FooTargetELFStreamer : public FooTargetStreamer
+///
+/// FooTargetStreamer should have a pure virtual method for each directive. For
+/// example, for a ".bar symbol_name" directive, it should have
+/// virtual emitBar(const MCSymbol &Symbol) = 0;
+///
+/// The FooTargetAsmSreamer and FooTargetELFStreamer classes implement the
+/// method. The assembly streamer just prints ".bar symbol_name". The object
+/// streamer does whatever is needed to implement .bar in the object file.
+///
+/// In the assembly printer and parser the target streamer can be used by
+/// calling getTargetStreamer and casting it to FooTargetStreamer:
+///
+/// MCTargetStreamer &TS = OutStreamer.getTargetStreamer();
+/// FooTargetStreamer &ATS = static_cast<FooTargetStreamer &>(TS);
+///
+/// The base classes FooTargetAsmSreamer and FooTargetELFStreamer should *never*
+/// be treated differently. Callers should always talk to a FooTargetStreamer.
+class MCTargetStreamer {
+protected:
+ OwningPtr<MCStreamer> Streamer;
+
+public:
+ virtual ~MCTargetStreamer();
+ void setStreamer(MCStreamer *S) { Streamer.reset(S); }
+};
+
+// FIXME: declared here because it is used from
+// lib/CodeGen/AsmPrinter/ARMException.cpp.
+class ARMTargetStreamer : public MCTargetStreamer {
+public:
+ virtual void emitFnStart() = 0;
+ virtual void emitFnEnd() = 0;
+ virtual void emitCantUnwind() = 0;
+ virtual void emitPersonality(const MCSymbol *Personality) = 0;
+ virtual void emitHandlerData() = 0;
+ virtual void emitSetFP(unsigned FpReg, unsigned SpReg,
+ int64_t Offset = 0) = 0;
+ virtual void emitPad(int64_t Offset) = 0;
+ virtual void emitRegSave(const SmallVectorImpl<unsigned> &RegList,
+ bool isVector) = 0;
+};
+
/// MCStreamer - Streaming machine code generation interface. This interface
/// is intended to provide a programatic interface that is very similar to the
/// level that an assembler .s file provides. It has callbacks to emit bytes,
@@ -50,6 +100,7 @@ typedef std::pair<const MCSection *, const MCExpr *> MCSectionSubPair;
///
class MCStreamer {
MCContext &Context;
+ MCTargetStreamer *TargetStreamer;
MCStreamer(const MCStreamer &) LLVM_DELETED_FUNCTION;
MCStreamer &operator=(const MCStreamer &) LLVM_DELETED_FUNCTION;
@@ -80,7 +131,7 @@ class MCStreamer {
bool AutoInitSections;
protected:
- MCStreamer(MCContext &Ctx);
+ MCStreamer(MCContext &Ctx, MCTargetStreamer *TargetStreamer);
const MCExpr *BuildSymbolDiff(MCContext &Context, const MCSymbol *A,
const MCSymbol *B);
@@ -107,6 +158,11 @@ public:
MCContext &getContext() const { return Context; }
+ MCTargetStreamer &getTargetStreamer() {
+ assert(TargetStreamer);
+ return *TargetStreamer;
+ }
+
unsigned getNumFrameInfos() { return FrameInfos.size(); }
const MCDwarfFrameInfo &getFrameInfo(unsigned i) { return FrameInfos[i]; }
@@ -600,28 +656,6 @@ public:
virtual void EmitRawText(StringRef String);
void EmitRawText(const Twine &String);
- /// ARM-related methods.
- /// FIXME: Eventually we should have some "target MC streamer" and move
- /// these methods there.
- 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 isVector);
-
- /// Mips-related methods.
- virtual void emitMipsHackELFFlags(unsigned Flags);
- virtual void emitMipsHackSTOCG(MCSymbol *Sym, unsigned Val);
-
- /// PPC-related methods.
- /// FIXME: Eventually replace it with some "target MC streamer" and move
- /// these methods there.
- virtual void EmitTCEntry(const MCSymbol &S);
-
/// Flush - Causes any cached state to be written out.
virtual void Flush() {}
@@ -652,9 +686,9 @@ MCStreamer *createNullStreamer(MCContext &Ctx);
///
/// \param ShowInst - Whether to show the MCInst representation inline with
/// the assembly.
-MCStreamer *createAsmStreamer(MCContext &Ctx, formatted_raw_ostream &OS,
- bool isVerboseAsm, bool useLoc, bool useCFI,
- bool useDwarfDirectory,
+MCStreamer *createAsmStreamer(MCContext &Ctx, MCTargetStreamer *TargetStreamer,
+ formatted_raw_ostream &OS, bool isVerboseAsm,
+ bool useLoc, bool useCFI, bool useDwarfDirectory,
MCInstPrinter *InstPrint = 0,
MCCodeEmitter *CE = 0, MCAsmBackend *TAB = 0,
bool ShowInst = false);
@@ -677,8 +711,9 @@ MCStreamer *createWinCOFFStreamer(MCContext &Ctx, MCAsmBackend &TAB,
/// createELFStreamer - Create a machine code streamer which will generate
/// ELF format object files.
-MCStreamer *createELFStreamer(MCContext &Ctx, MCAsmBackend &TAB,
- raw_ostream &OS, MCCodeEmitter *CE, bool RelaxAll,
+MCStreamer *createELFStreamer(MCContext &Ctx, MCTargetStreamer *TargetStreamer,
+ MCAsmBackend &TAB, raw_ostream &OS,
+ MCCodeEmitter *CE, bool RelaxAll,
bool NoExecStack);
/// createPureStreamer - Create a machine code streamer which will generate
generated by cgit v1.2.3 (git 2.25.1) at 2024-06-03 01:14:35 +0000