Re: 64-bit experiment

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On 08/04/17 17:32, Earnie wrote:
>>>> Going forward, we could begin to develop a proper 64-bit port of
>>>> our runtime and w32api.  The first roadblock, I think, is the
>>>> startup code.
>>
>> Seems like a good place to start; we should conditionalize, to make 
>> it as multi-arch as possible.
>
> IIRC _win64 is defined as well as _win32 by the compiler.  The absence
> of _win64 is what can be used to indicate 32bit versus 64bit.

More or less.  AFAIK, the two macros are actually _WIN32 and _WIN64, 
(upper case matters), and *both* are defined by the 64-bit compiler; 
the 32-bit compiler defines only _WIN32.  Thus, the structure for the 
conditionals becomes:

  #if defined _WIN64
  /* 64-bit specific code here:
   */
   .
   .
  #elif defined _WIN32 /* or maybe just #else */
  /* 32-bit specific code here:
   */
   .
   .
  #endif

- -- 
Regards,
Keith.

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