bytecode/BytecodeConventions.h

   1 /*
   2  * Copyright (C) 2012 Apple Inc. All rights reserved.
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   8  *    notice, this list of conditions and the following disclaimer.
   9  * 2. Redistributions in binary form must reproduce the above copyright
  10  *    notice, this list of conditions and the following disclaimer in the
  11  *    documentation and/or other materials provided with the distribution.
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  13  * THIS SOFTWARE IS PROVIDED BY APPLE INC. ``AS IS'' AND ANY
  14  * EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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  25
  26 #ifndef BytecodeConventions_h
  27 #define BytecodeConventions_h
  28
  29 // Register numbers used in bytecode operations have different meaning according to their ranges:
  30 //      0x80000000-0xFFFFFFFF  Negative indices from the CallFrame pointer are entries in the call frame, see RegisterFile.h.
  31 //      0x00000000-0x3FFFFFFF  Forwards indices from the CallFrame pointer are local vars and temporaries with the function's callframe.
  32 //      0x40000000-0x7FFFFFFF  Positive indices from 0x40000000 specify entries in the constant pool on the CodeBlock.
  33 static const int FirstConstantRegisterIndex = 0x40000000;
  34
  35 #endif // BytecodeConventions_h
  36