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From: olcott <polcott333@gmail.com>
Newsgroups: comp.theory
Subject: Re: Anyone with sufficient knowledge of C knows that DD specifies
 non-terminating behavior to HHH
Date: Thu, 27 Feb 2025 18:04:48 -0600
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On 2/27/2025 3:00 PM, joes wrote:
> Am Thu, 27 Feb 2025 13:06:41 -0600 schrieb olcott:
>> On 2/27/2025 3:36 AM, Fred. Zwarts wrote:
>>> Op 27.feb.2025 om 05:40 schreef olcott:
>>>> On 2/26/2025 9:52 AM, joes wrote:
>>>>> Am Wed, 26 Feb 2025 08:49:42 -0600 schrieb olcott:
>>>>>> On 2/26/2025 3:48 AM, Fred. Zwarts wrote:
>>>>>>> Op 26.feb.2025 om 05:50 schreef olcott:
>>>>>>>> On 2/25/2025 10:21 PM, Richard Damon wrote:
>>>>>>
>>>>>>>> You already know that you are stupidly wrong about the emulation
>>>>>>>> being incorrect or you would have provided the correct emulation
>>>>>>>> sequence long ago.
>>>>>>>> What are the first 15 lines of DD correctly emulated by HHH?
>>>>>>> The error in the simulation occurs already at the 5th instruction,
>>>>>>> the 'call 000015c3'. Instead of simulating this instruction,
>>>>>> What are the correct first 15 lines of DD emulated by HHH.
>>>>> There can be no correct continuation.
>>>> If I am wrong then a correct simulation must exist.
>>> HHH1 did a correct simulation, so, there it is.
>> That dishonestly dodged the original question:
>> What are the first 15 *lines of DD* correctly emulated by HHH?
> Look at what HHH1 does.
> 
>> _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]

> Anyway: ignoring the call to HHH, 
Is stupidly wrong.

> because it doesn't call DD in turn,
> we continue with 2141 until the conditional jump, whereupon we
> either enter an infinite loop (which is more than 15 instructions)
> or proceed to return (which is 13 instructions), depending on the
> return value of HHH.
> 


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