1 files changed, 167 insertions, 0 deletions
diff --git a/lib/CodeGen/AsmPrinter/DwarfPrinter.h b/lib/CodeGen/AsmPrinter/DwarfPrinter.h
new file mode 100644
index 0000000000..69d9c27ff0
--- /dev/null
+++ b/lib/CodeGen/AsmPrinter/DwarfPrinter.h
@@ -0,0 +1,167 @@
+//===--- lib/CodeGen/DwarfPrinter.h - Dwarf Printer -------------*- C++ -*-===//
+//
+//                     The LLVM Compiler Infrastructure
+//
+// This file is distributed under the University of Illinois Open Source
+// License. See LICENSE.TXT for details.
+//
+//===----------------------------------------------------------------------===//
+//
+// Emit general DWARF directives.
+// 
+//===----------------------------------------------------------------------===//
+
+#ifndef CODEGEN_ASMPRINTER_DWARFPRINTER_H__
+#define CODEGEN_ASMPRINTER_DWARFPRINTER_H__
+
+#include "DwarfLabel.h"
+#include "llvm/CodeGen/MachineLocation.h"
+#include "llvm/Support/Compiler.h"
+#include "llvm/Support/FormattedStream.h"
+#include <vector>
+
+namespace llvm {
+class AsmPrinter;
+class MachineFunction;
+class MachineModuleInfo;
+class Module;
+class MCAsmInfo;
+class TargetData;
+class TargetRegisterInfo;
+class MCSymbol;
+class Twine;
+
+class DwarfPrinter {
+protected:
+  ~DwarfPrinter() {}
+
+  //===-------------------------------------------------------------==---===//
+  // Core attributes used by the DWARF printer.
+  //
+
+  /// O - Stream to .s file.
+  raw_ostream &O;
+
+  /// Asm - Target of Dwarf emission.
+  AsmPrinter *Asm;
+
+  /// MAI - Target asm information.
+  const MCAsmInfo *MAI;
+
+  /// TD - Target data.
+  const TargetData *TD;
+
+  /// RI - Register Information.
+  const TargetRegisterInfo *RI;
+
+  /// M - Current module.
+  Module *M;
+
+  /// MF - Current machine function.
+  const MachineFunction *MF;
+
+  /// MMI - Collected machine module information.
+  MachineModuleInfo *MMI;
+
+  /// SubprogramCount - The running count of functions being compiled.
+  unsigned SubprogramCount;
+
+  /// Flavor - A unique string indicating what dwarf producer this is, used to
+  /// unique labels.
+  const char * const Flavor;
+
+  /// SetCounter - A unique number for each '.set' directive.
+  unsigned SetCounter;
+
+  DwarfPrinter(raw_ostream &OS, AsmPrinter *A, const MCAsmInfo *T,
+               const char *flavor);
+public:
+  
+  //===------------------------------------------------------------------===//
+  // Accessors.
+  //
+  const AsmPrinter *getAsm() const { return Asm; }
+  MachineModuleInfo *getMMI() const { return MMI; }
+  const MCAsmInfo *getMCAsmInfo() const { return MAI; }
+  const TargetData *getTargetData() const { return TD; }
+
+  void PrintRelDirective(bool Force32Bit = false,
+                         bool isInSection = false) const;
+
+  /// EOL - Print a newline character to asm stream.  If a comment is present
+  /// then it will be printed first.  Comments should not contain '\n'.
+  void EOL(const Twine &Comment) const;
+  
+  /// EmitEncodingByte - Emit a .byte 42 directive that corresponds to an
+  /// encoding.  If verbose assembly output is enabled, we output comments
+  /// describing the encoding.  Desc is a string saying what the encoding is
+  /// specifying (e.g. "LSDA").
+  void EmitEncodingByte(unsigned Val, const char *Desc);
+  
+  /// EmitCFAByte - Emit a .byte 42 directive for a DW_CFA_xxx value.
+  void EmitCFAByte(unsigned Val);
+  
+  
+  /// EmitSLEB128 - emit the specified signed leb128 value.
+  void EmitSLEB128(int Value, const char *Desc) const;
+
+  /// EmitULEB128 - emit the specified unsigned leb128 value.
+  void EmitULEB128(unsigned Value, const char *Desc = 0) const;
+
+  
+  /// PrintLabelName - Print label name in form used by Dwarf writer.
+  ///
+  void PrintLabelName(const DWLabel &Label) const {
+    PrintLabelName(Label.getTag(), Label.getNumber());
+  }
+  void PrintLabelName(const char *Tag, unsigned Number) const;
+  void PrintLabelName(const char *Tag, unsigned Number,
+                      const char *Suffix) const;
+
+  /// EmitLabel - Emit location label for internal use by Dwarf.
+  ///
+  void EmitLabel(const DWLabel &Label) const {
+    EmitLabel(Label.getTag(), Label.getNumber());
+  }
+  void EmitLabel(const char *Tag, unsigned Number) const;
+
+  /// EmitReference - Emit a reference to a label.
+  ///
+  void EmitReference(const DWLabel &Label, bool IsPCRelative = false,
+                     bool Force32Bit = false) const {
+    EmitReference(Label.getTag(), Label.getNumber(),
+                  IsPCRelative, Force32Bit);
+  }
+  void EmitReference(const char *Tag, unsigned Number,
+                     bool IsPCRelative = false,
+                     bool Force32Bit = false) const;
+  void EmitReference(const std::string &Name, bool IsPCRelative = false,
+                     bool Force32Bit = false) const;
+  void EmitReference(const MCSymbol *Sym, bool IsPCRelative = false,
+                     bool Force32Bit = false) const;
+
+  /// EmitDifference - Emit the difference between two labels.
+  void EmitDifference(const DWLabel &LabelHi, const DWLabel &LabelLo,
+                      bool IsSmall = false) {
+    EmitDifference(LabelHi.getTag(), LabelHi.getNumber(),
+                   LabelLo.getTag(), LabelLo.getNumber(),
+                   IsSmall);
+  }
+  void EmitDifference(const char *TagHi, unsigned NumberHi,
+                      const char *TagLo, unsigned NumberLo,
+                      bool IsSmall = false);
+
+  void EmitSectionOffset(const char* Label, const char* Section,
+                         unsigned LabelNumber, unsigned SectionNumber,
+                         bool IsSmall = false, bool isEH = false,
+                         bool useSet = true);
+
+  /// EmitFrameMoves - Emit frame instructions to describe the layout of the
+  /// frame.
+  void EmitFrameMoves(const char *BaseLabel, unsigned BaseLabelID,
+                      const std::vector<MachineMove> &Moves, bool isEH);
+};
+
+} // end llvm namespace
+
+#endif