Revert "VM: New calling convention for generated code."

runtime/vm/instructions_ia32.h

 // Copyright (c) 2012, 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.
 // Classes that describe assembly patterns as used by inline caches.
 
 #ifndef VM_INSTRUCTIONS_IA32_H_
 #define VM_INSTRUCTIONS_IA32_H_
 
 #ifndef VM_INSTRUCTIONS_H_
 #error Do not include instructions_ia32.h directly; use instructions.h instead.
@@ skipping 86 matching lines @@
     return kCallPattern;
   }
 
  private:
   static const int kLengthInBytes = 5;
 
   DISALLOW_COPY_AND_ASSIGN(CallPattern);
 };
 
 
+class JumpPattern : public CallOrJumpPattern<JumpPattern> {
+ public:
+  JumpPattern(uword pc, const Code& code) : CallOrJumpPattern(pc) {}
+
+  static int pattern_length_in_bytes() { return kLengthInBytes; }
+  static const int* pattern() {
+    static const int kJumpPattern[kLengthInBytes] = {0xE9, -1, -1, -1, -1};
+    return kJumpPattern;
+  }
+
+ private:
+  static const int kLengthInBytes = 5;
+
+  DISALLOW_COPY_AND_ASSIGN(JumpPattern);
+};
+
+
 class ReturnPattern : public InstructionPattern<ReturnPattern> {
  public:
   explicit ReturnPattern(uword pc) : InstructionPattern(pc) {}
 
   static const int* pattern() {
     static const int kReturnPattern[kLengthInBytes] = { 0xC3 };
     return kReturnPattern;
   }
   static int pattern_length_in_bytes() { return kLengthInBytes; }
 
@@ skipping 33 matching lines @@
 
   static int pattern_length_in_bytes() { return kLengthInBytes; }
 
  private:
   static const int kLengthInBytes = 2;
 };
 
 }  // namespace dart
 
 #endif  // VM_INSTRUCTIONS_IA32_H_