Add an option that allows one to "decode" the LSDA.

[oota-llvm.git] / include / llvm / MC / MCStreamer.h

diff --git a/include/llvm/MC/MCStreamer.h b/include/llvm/MC/MCStreamer.h
index 97f93589da55aec851ac6b39e47c1d2935e55acd..6f017136c2dc2b7e28b357556f24ad1a40628ba5 100644 (file)
--- a/include/llvm/MC/MCStreamer.h
+++ b/include/llvm/MC/MCStreamer.h
@@ -18,6 +18,7 @@
 #include "llvm/Support/DataTypes.h"
 #include "llvm/MC/MCDirectives.h"
 #include "llvm/MC/MCDwarf.h"
+#include "llvm/MC/MCWin64EH.h"
 
 namespace llvm {
   class MCAsmInfo;
@@ -57,6 +58,11 @@ namespace llvm {
     MCDwarfFrameInfo *getCurrentFrameInfo();
     void EnsureValidFrame();
 
+    std::vector<MCWin64EHUnwindInfo *> W64UnwindInfos;
+    MCWin64EHUnwindInfo *CurrentW64UnwindInfo;
+    void setCurrentW64UnwindInfo(MCWin64EHUnwindInfo *Frame);
+    void EnsureValidW64UnwindInfo();
+
     const MCSymbol* LastNonPrivate;
 
     /// SectionStack - This is stack of current and previous section
@@ -70,8 +76,12 @@ namespace llvm {
     const MCExpr *BuildSymbolDiff(MCContext &Context, const MCSymbol *A,
                                   const MCSymbol *B);
 
-    const MCExpr *ForceExpAbs(MCStreamer *Streamer, MCContext &Context,
-                              const MCExpr* Expr);
+    const MCExpr *ForceExpAbs(const MCExpr* Expr);
+
+    void EmitFrames(bool usingCFI);
+
+    MCWin64EHUnwindInfo *getCurrentW64UnwindInfo(){return CurrentW64UnwindInfo;}
+    void EmitW64Tables();
 
   public:
     virtual ~MCStreamer();
@@ -86,6 +96,14 @@ namespace llvm {
       return FrameInfos[i];
     }
 
+    unsigned getNumW64UnwindInfos() {
+      return W64UnwindInfos.size();
+    }
+
+    MCWin64EHUnwindInfo &getW64UnwindInfo(unsigned i) {
+      return *W64UnwindInfos[i];
+    }
+
     /// @name Assembly File Formatting.
     /// @{
 
@@ -177,6 +195,17 @@ namespace llvm {
       }
     }
 
+    /// SwitchSectionNoChange - Set the current section where code is being
+    /// emitted to @p Section.  This is required to update CurSection. This
+    /// version does not call ChangeSection.
+    void SwitchSectionNoChange(const MCSection *Section) {
+      assert(Section && "Cannot switch to a null section!");
+      const MCSection *curSection = SectionStack.back().first;
+      SectionStack.back().second = curSection;
+      if (Section != curSection)
+        SectionStack.back().first = Section;
+    }
+
     /// InitSections - Create the default sections and set the initial one.
     virtual void InitSections() = 0;
 
@@ -291,6 +320,7 @@ namespace llvm {
     /// if non-zero.  This must be a power of 2 on some targets.
     virtual void EmitTBSSSymbol(const MCSection *Section, MCSymbol *Symbol,
                                 uint64_t Size, unsigned ByteAlignment = 0) = 0;
+
     /// @}
     /// @name Generating Data
     /// @{
@@ -454,6 +484,21 @@ namespace llvm {
     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();
+
     /// EmitInstruction - Emit the given @p Instruction into the current
     /// section.
     virtual void EmitInstruction(const MCInst &Inst) = 0;
@@ -502,6 +547,9 @@ namespace llvm {
   ///
   /// \param ShowInst - Whether to show the MCInst representation inline with
   /// the assembly.
+  ///
+  /// \param DecodeLSDA - If true, emit comments that translates the LSDA into a
+  /// human readable format. Only usable with CFI.
   MCStreamer *createAsmStreamer(MCContext &Ctx, formatted_raw_ostream &OS,
                                 bool isVerboseAsm,
                                 bool useLoc,
@@ -509,7 +557,8 @@ namespace llvm {
                                 MCInstPrinter *InstPrint = 0,
                                 MCCodeEmitter *CE = 0,
                                 TargetAsmBackend *TAB = 0,
-                                bool ShowInst = false);
+                                bool ShowInst = false,
+                                bool DecodeLSDA = false);
 
   /// createMachOStreamer - Create a machine code streamer which will generate
   /// Mach-O format object files.