Introduce architecture specific headers describing Dart stack frames.

runtime/vm/constants_ia32.h

 // Copyright (c) 2013, 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_CONSTANTS_IA32_H_
 #define VM_CONSTANTS_IA32_H_
 
 #include "platform/assert.h"
 
 namespace dart {
@@ skipping 57 matching lines @@
 
 // Exception object is passed in this register to the catch handlers when an
 // exception is thrown.
 const Register kExceptionObjectReg = EAX;
 
 // Stack trace object is passed in this register to the catch handlers when
 // an exception is thrown.
 const Register kStackTraceObjectReg = EDX;
 
 
-// TODO(regis): Move these constants to stack_frame_ia32.h.
-// Dart stack frame layout.
-static const int kLastParamSlotIndex = 2;  // From fp.
-static const int kFirstLocalSlotIndex = -2;  // From fp.
-static const int kPcSlotIndexFromSp = -1;
-
-/* IA32 Dart Frame Layout
-
-               |                   | <- TOS
-Callee frame   | ...               |
-               | current ret addr  |    (PC of current frame)
-               +-------------------+
-Current frame  | ...               | <- ESP of current frame
-               | first local       |
-               | PC Marker         |    (current frame's code entry)
-               | caller's EBP      | <- EBP of current frame
-               | caller's ret addr |    (PC of caller frame)
-               +-------------------+
-Caller frame   | last parameter    |
-               |  ...              |
-*/
-
-
 enum ScaleFactor {
   TIMES_1 = 0,
   TIMES_2 = 1,
   TIMES_4 = 2,
   TIMES_8 = 3,
   TIMES_16 = 4,
   TIMES_HALF_WORD_SIZE = kWordSizeLog2 - 1
 };
 
 
@@ skipping 49 matching lines @@
 };
 
 
 // The largest multibyte nop we will emit.  This could go up to 15 if it
 // becomes important to us.
 const int MAX_NOP_SIZE = 8;
 
 }  // namespace dart
 
 #endif  // VM_CONSTANTS_IA32_H_