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      1 // Copyright 2006-2008 the V8 project authors. All rights reserved.
      2 // Redistribution and use in source and binary forms, with or without
      3 // modification, are permitted provided that the following conditions are
      4 // met:
      5 //
      6 //     * Redistributions of source code must retain the above copyright
      7 //       notice, this list of conditions and the following disclaimer.
      8 //     * Redistributions in binary form must reproduce the above
      9 //       copyright notice, this list of conditions and the following
     10 //       disclaimer in the documentation and/or other materials provided
     11 //       with the distribution.
     12 //     * Neither the name of Google Inc. nor the names of its
     13 //       contributors may be used to endorse or promote products derived
     14 //       from this software without specific prior written permission.
     15 //
     16 // THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
     17 // "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
     18 // LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
     19 // A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
     20 // OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
     21 // SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
     22 // LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
     23 // DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
     24 // THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
     25 // (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
     26 // OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
     27 
     28 #ifndef V8_DISASSEMBLER_H_
     29 #define V8_DISASSEMBLER_H_
     30 
     31 #include "allocation.h"
     32 
     33 namespace v8 {
     34 namespace internal {
     35 
     36 class Disassembler : public AllStatic {
     37  public:
     38   // Print the bytes in the interval [begin, end) into f.
     39   static void Dump(FILE* f, byte* begin, byte* end);
     40 
     41   // Decode instructions in the the interval [begin, end) and print the
     42   // code into f. Returns the number of bytes disassembled or 1 if no
     43   // instruction could be decoded.
     44   static int Decode(Isolate* isolate, FILE* f, byte* begin, byte* end);
     45 
     46   // Decode instructions in code.
     47   static void Decode(FILE* f, Code* code);
     48  private:
     49   // Decode instruction at pc and print disassembled instruction into f.
     50   // Returns the instruction length in bytes, or 1 if the instruction could
     51   // not be decoded.  The number of characters written is written into
     52   // the out parameter char_count.
     53   static int Decode(FILE* f, byte* pc, int* char_count);
     54 };
     55 
     56 } }  // namespace v8::internal
     57 
     58 #endif  // V8_DISASSEMBLER_H_
     59