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From: olcott <polcott333@gmail.com>
Newsgroups: comp.lang.c,comp.lang.c++
Subject: Re: Can someone please verify the execution trace of this?
Date: Mon, 20 May 2024 15:36:29 -0500
Organization: A noiseless patient Spider
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On 5/20/2024 3:32 PM, Chris M. Thomasson wrote:
> On 5/20/2024 1:31 PM, Chris M. Thomasson wrote:
>> On 5/20/2024 1:30 PM, olcott wrote:
>>> On 5/20/2024 3:19 PM, Chris M. Thomasson wrote:
>>>> On 5/20/2024 1:10 PM, olcott wrote:
>>>>> On 5/20/2024 3:04 PM, Chris M. Thomasson wrote:
> [...]
>>>> So, you created a simulator for x86? 32-bit I am assuming. Fwiw, I 
>>>> am interested on how you simulate the cmpxchg8b and/or the 
>>>> cmpxchg16b functions?
>>>>
>>>
>>> I use libx86emu providing an interface so that any C function
>>> can simulate any other C function in debug step mode. The
>>> original H can even simulated itself simulating P.
>>
>> Can you show me a sample H? Is H a little program?
> [...]
> 
> I notice this:
> 
> 
> typedef int (*ptr)();  // ptr is pointer to int function
> 00 int H(ptr p, ptr i);
> 01 int D(ptr p)
> 02 {
> 03   int Halt_Status = H(p, p);
> 04   if (Halt_Status)
> 05     HERE: goto HERE;
> 06   return Halt_Status;
> 07 }
> 08
> 09 int main()
> 10 {
> 11   H(D,D);
> 12   return 0;
> 13 }
> 
> But, where is H?
> 

*IF YOU NEED TO RE0READ THIS 500 TIMES TO GET IT PLEASE DO*
*IF YOU NEED TO RE0READ THIS 500 TIMES TO GET IT PLEASE DO*
*IF YOU NEED TO RE0READ THIS 500 TIMES TO GET IT PLEASE DO*

Every element of an infinite set of H/D pairs matching the above
template where H correctly simulates 1 to ∞ steps of D thus including
0 to ∞ recursive simulations of H simulating itself simulating D.
*D correctly simulated by H never reaches its own line 06 and halts*

-- 
Copyright 2024 Olcott "Talent hits a target no one else can hit; Genius
hits a target no one else can see." Arthur Schopenhauer