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From: olcott <polcott333@gmail.com>
Newsgroups: comp.theory
Subject: Re: DD correctly emulated by HHH --- Kicking the straw-man deception
 out on its ass
Date: Mon, 3 Mar 2025 08:08:47 -0600
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On 3/3/2025 2:46 AM, Fred. Zwarts wrote:
> Op 02.mrt.2025 om 23:28 schreef olcott:
>> On 3/2/2025 4:15 PM, Fred. Zwarts wrote:
>>> Op 02.mrt.2025 om 22:21 schreef olcott:
>>>> int DD()
>>>> {
>>>>    int Halt_Status = HHH(DD);
>>>>    if (Halt_Status)
>>>>      HERE: goto HERE;
>>>>    return Halt_Status;
>>>> }
>>>>
>>>> _DD()
>>>> [00002133] 55         push ebp      ; housekeeping
>>>> [00002134] 8bec       mov ebp,esp   ; housekeeping
>>>> [00002136] 51         push ecx      ; make space for local
>>>> [00002137] 6833210000 push 00002133 ; push DD
>>>> [0000213c] e882f4ffff call 000015c3 ; call HHH(DD)
>>>> [00002141] 83c404     add esp,+04
>>>> [00002144] 8945fc     mov [ebp-04],eax
>>>> [00002147] 837dfc00   cmp dword [ebp-04],+00
>>>> [0000214b] 7402       jz 0000214f
>>>> [0000214d] ebfe       jmp 0000214d
>>>> [0000214f] 8b45fc     mov eax,[ebp-04]
>>>> [00002152] 8be5       mov esp,ebp
>>>> [00002154] 5d         pop ebp
>>>> [00002155] c3         ret
>>>> Size in bytes:(0035) [00002155]
>>>>
>>>> DD emulated by HHH according to the behavior that DD
>>>> specifies cannot possibly reach its own "ret" instruction
>>>> and terminate normally.
>>>>
>>>> This process computes the mapping from the actual input
>>>> (not any other damn thing) finite string to the non
>>>> terminating behavior that this finite specifies when
>>>> it calls its own emulator in recursive emulation.
>>>
>>> In other words 'non terminating behavior' means that *HHH* was unable 
>>> to reach the 'ret' instruction. 
>>
>> Not at all. The fact that DD calls its own emulator
>> makes DD unable to reach its own "ret" instruction.
>>
> 
> Counter factual. The exact same finite string in direct execution or 
> simulated by HHH1 shows that DD is perfectly able to reach its 'ret' 

Because neither of these cases has DD calling its own emulator.
Ignoring how this changes the behavior of DD is stupid.

> instruction of the exact same input,  
> because *HHH* cannot simulate itself.

That your technical skills are insufficient to understand
the code that conclusively proves that HHH does emulate
itself emulating DD.

https://github.com/plolcott/x86utm/blob/master/Halt7.c
Is far less than no rebuttal at all.

> It is *HHH* that fails to reach this 'ret' instruction.


-- 
Copyright 2025 Olcott "Talent hits a target no one else can hit; Genius
hits a target no one else can see." Arthur Schopenhauer