Disassembler for x64.

runtime/vm/disassembler.h

 // Copyright (c) 2011, the Dart project authors.  Please see the AUTHORS file
 // for details. All rights reserved. Use of this source code is governed by a
 // BSD-style license that can be found in the LICENSE file.
 
 #ifndef VM_DISASSEMBLER_H_
 #define VM_DISASSEMBLER_H_
 
 #include "vm/allocation.h"
 #include "vm/assembler.h"
 #include "vm/globals.h"
 
 namespace dart {
 
 // Froward declaration.
 class MemoryRegion;
 
 // Disassembly formatter interface, which consumes the
 // disassembled instructions in any desired form.
 class DisassemblyFormatter {
  public:
   DisassemblyFormatter() { }
   virtual ~DisassemblyFormatter() { }
 
   // Consume the decoded instruction at the given pc.
   virtual void ConsumeInstruction(char* hex_buffer,
                                   intptr_t hex_size,
                                   char* human_buffer,
                                   intptr_t human_size,
                                   uword pc) = 0;
+
+  // Print a formatted message.
+  virtual void Print(const char* format, ...) = 0;

[Ivan Posva, 2011/11/30 22:42:12]

Can you add a TODO to remove this once we have the real x64 disassembler?

[regis, 2011/11/30 23:11:52]

Done.

 };
 
 
 // Basic disassembly formatter that outputs the disassembled instruction
 // to stdout.
 class DisassembleToStdout : public DisassemblyFormatter {
  public:
   DisassembleToStdout() : DisassemblyFormatter() { }
   ~DisassembleToStdout() { }
 
   virtual void ConsumeInstruction(char* hex_buffer,
                                   intptr_t hex_size,
                                   char* human_buffer,
                                   intptr_t human_size,
                                   uword pc);
 
+  virtual void Print(const char* format, ...);
+
  private:
   DISALLOW_ALLOCATION()
   DISALLOW_COPY_AND_ASSIGN(DisassembleToStdout);
 };
 
 
 // Disassemble instructions.
 class Disassembler : public AllStatic {
  public:
   // Disassemble instructions between start and end.
   // (The assumption is that start is at a valid instruction).
   static void Disassemble(uword start,
                           uword end,
                           DisassemblyFormatter* formatter);
   static void Disassemble(uword start, uword end) {
     DisassembleToStdout stdout_formatter;
     Disassemble(start, end, &stdout_formatter);
   }
 
   // Disassemble instructions in a memory region.
   static void DisassembleMemoryRegionRange(const MemoryRegion& instructions,

[Ivan Posva, 2011/11/30 22:42:12]

Not sure if this is really needed. Siva, do you see any need for keeping this
alive?

[regis, 2011/11/30 23:11:52]

Removed for now since unused.

                                            uword from,
                                            uword to,
                                            DisassemblyFormatter* formatter);
   static void DisassembleMemoryRegion(const MemoryRegion& instructions,
                                       DisassemblyFormatter* formatter) {
     uword start = instructions.start();
     uword end = instructions.end();
     Disassemble(start, end, formatter);
   }
   static void DisassembleMemoryRegion(const MemoryRegion& instructions) {
     uword start = instructions.start();
     uword end = instructions.end();
     Disassemble(start, end);
   }
 
   // Decodes one instruction.
   // Writes a hexadecimal representation into the hex_buffer and a
   // human-readable representation into the human_buffer.
   // Returns the length of the decoded instruction in bytes.
   static int DecodeInstruction(char* hex_buffer, intptr_t hex_size,
                                char* human_buffer, intptr_t human_size,
                                uword pc);
 
   // Returns the name for the given register. For instance the Register EAX
   // returns the string "eax".
   static const char* RegisterName(Register reg);

[regis, 2011/11/30 23:11:52]

Also removed since unused.

 
  private:
   static const int kHexadecimalBufferSize = 32;
   static const int kUserReadableBufferSize = 256;
 };
 
 }  // namespace dart
 
 #endif  // VM_DISASSEMBLER_H_