Courgette: Add static method QuickDetect() to optimize program detection.

courgette/disassembler.h

 // Copyright (c) 2011 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #ifndef COURGETTE_DISASSEMBLER_H_
 #define COURGETTE_DISASSEMBLER_H_
 
 #include <stddef.h>
 #include <stdint.h>
 
@@ skipping 74 matching lines @@
   // ok() may always be called but returns true only after ParseHeader()
   // succeeds.
   bool ok() const { return failure_reason_ == nullptr; }
 
   // Returns the length of the image. May reduce after ParseHeader().
   size_t length() const { return length_; }
   const uint8_t* start() const { return start_; }
   const uint8_t* end() const { return end_; }
 
  protected:
-  Disassembler(const void* start, size_t length);
+  Disassembler(const uint8_t* start, size_t length);
 
   bool Good();
   bool Bad(const char *reason);
 
   // Returns true if the array lies within our memory region.
   bool IsArrayInBounds(size_t offset, size_t elements, size_t element_size) {
     return offset <= length() && elements <= (length() - offset) / element_size;
   }
 
   // Computes and stores all Labels before scanning program bytes.
@@ skipping 14 matching lines @@
   size_t length_;         // In current memory.
   const uint8_t* start_;  // In current memory, base for 'file offsets'.
   const uint8_t* end_;    // In current memory.
 
   DISALLOW_COPY_AND_ASSIGN(Disassembler);
 };
 
 }  // namespace courgette
 
 #endif  // COURGETTE_DISASSEMBLER_H_