Add Elf 32 Support to Courgette.

courgette/disassembler.cc

 // 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.
 
 #include "courgette/disassembler.h"
 
 #include <algorithm>
 #include <string>
 #include <vector>
 
 #include "base/basictypes.h"
 #include "base/logging.h"
 
 #include "courgette/assembly_program.h"
 #include "courgette/courgette.h"
+#include "courgette/disassembler_elf_32_x86.h"
 #include "courgette/disassembler_win32_x86.h"
 #include "courgette/encoded_program.h"
 
 // COURGETTE_HISTOGRAM_TARGETS prints out a histogram of how frequently
 // different target addresses are referenced.  Purely for debugging.
 #define COURGETTE_HISTOGRAM_TARGETS 0
 
 namespace courgette {
 
 ////////////////////////////////////////////////////////////////////////////////
 
 Disassembler* DetectDisassembler(const void* buffer, size_t length) {
   Disassembler* disassembler = NULL;
 
   disassembler = new DisassemblerWin32X86(buffer, length);
   if (disassembler->ParseHeader())
     return disassembler;
+  else
+    delete disassembler;
 
-  delete disassembler;
+  disassembler = new DisassemblerElf32X86(buffer, length);
+  if (disassembler->ParseHeader())
+    return disassembler;
+  else
+    delete disassembler;
 
   return NULL;
 }
 
 Status DetectExecutableType(const void* buffer, size_t length,
                             ExecutableType* type,
                             size_t* detected_length) {
 
   Disassembler* disassembler = DetectDisassembler(buffer, length);
 
@@ skipping 61 matching lines @@
   failure_reason_ = reason;
   return false;
 }
 
 void Disassembler::ReduceLength(size_t reduced_length) {
   if (reduced_length < length_)
     length_ = reduced_length;
 }
 
 }  // namespace courgette