Rename TargetAsmParser to MCTargetAsmParser and TargetAsmLexer to MCTargetAsmLexer...

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

diff --git a/include/llvm/MC/MCDwarf.h b/include/llvm/MC/MCDwarf.h
index 52371f697923726dcfe9fa5dde0f30208274df2d..431e3c4da86a7fffd091db1e929ca7a6f2ff27fb 100644 (file)
--- a/include/llvm/MC/MCDwarf.h
+++ b/include/llvm/MC/MCDwarf.h
@@ -16,6 +16,7 @@
 #define LLVM_MC_MCDWARF_H
 
 #include "llvm/ADT/StringRef.h"
+#include "llvm/MC/MachineLocation.h"
 #include "llvm/MC/MCObjectWriter.h"
 #include "llvm/Support/raw_ostream.h"
 #include "llvm/Support/Dwarf.h"
@@ -23,6 +24,7 @@
 
 namespace llvm {
   class MCContext;
+  class MCExpr;
   class MCSection;
   class MCSectionData;
   class MCStreamer;
@@ -208,8 +210,7 @@ namespace llvm {
     //
     // This emits the Dwarf file and the line tables.
     //
-    static void Emit(MCStreamer *MCOS, const MCSection *DwarfLineSection,
-                     MCSectionData *DLS, int PointerSize);
+    static void Emit(MCStreamer *MCOS);
   };
 
   class MCDwarfLineAddr {
@@ -221,13 +222,69 @@ namespace llvm {
     static void Emit(MCStreamer *MCOS,
                      int64_t LineDelta,uint64_t AddrDelta);
 
-    /// Utility function to compute the size of the encoding.
-    static uint64_t ComputeSize(int64_t LineDelta, uint64_t AddrDelta);
-
     /// Utility function to write the encoding to an object writer.
     static void Write(MCObjectWriter *OW,
                       int64_t LineDelta, uint64_t AddrDelta);
   };
+
+  class MCCFIInstruction {
+  public:
+    enum OpType { SameValue, Remember, Restore, Move, RelMove };
+  private:
+    OpType Operation;
+    MCSymbol *Label;
+    // Move to & from location.
+    MachineLocation Destination;
+    MachineLocation Source;
+  public:
+    MCCFIInstruction(OpType Op, MCSymbol *L)
+      : Operation(Op), Label(L) {
+      assert(Op == Remember || Op == Restore);
+    }
+    MCCFIInstruction(OpType Op, MCSymbol *L, unsigned Register)
+      : Operation(Op), Label(L), Destination(Register) {
+      assert(Op == SameValue);
+    }
+    MCCFIInstruction(MCSymbol *L, const MachineLocation &D,
+                     const MachineLocation &S)
+      : Operation(Move), Label(L), Destination(D), Source(S) {
+    }
+    MCCFIInstruction(OpType Op, MCSymbol *L, const MachineLocation &D,
+                     const MachineLocation &S)
+      : Operation(Op), Label(L), Destination(D), Source(S) {
+      assert(Op == RelMove);
+    }
+    OpType getOperation() const { return Operation; }
+    MCSymbol *getLabel() const { return Label; }
+    const MachineLocation &getDestination() const { return Destination; }
+    const MachineLocation &getSource() const { return Source; }
+  };
+
+  struct MCDwarfFrameInfo {
+    MCDwarfFrameInfo() : Begin(0), End(0), Personality(0), Lsda(0),
+                         Function(0), Instructions(), PersonalityEncoding(),
+                         LsdaEncoding(0), CompactUnwindEncoding(0) {}
+    MCSymbol *Begin;
+    MCSymbol *End;
+    const MCSymbol *Personality;
+    const MCSymbol *Lsda;
+    const MCSymbol *Function;
+    std::vector<MCCFIInstruction> Instructions;
+    unsigned PersonalityEncoding;
+    unsigned LsdaEncoding;
+    uint32_t CompactUnwindEncoding;
+  };
+
+  class MCDwarfFrameEmitter {
+  public:
+    //
+    // This emits the frame info section.
+    //
+    static void Emit(MCStreamer &streamer, bool usingCFI,
+                     bool isEH);
+    static void EmitAdvanceLoc(MCStreamer &Streamer, uint64_t AddrDelta);
+    static void EncodeAdvanceLoc(uint64_t AddrDelta, raw_ostream &OS);
+  };
 } // end namespace llvm
 
 #endif