Sujet : Re: People are still trying to get away with disagreeing with the semantics of the x86 language
De : polcott333 (at) *nospam* gmail.com (olcott)
Groupes : comp.theoryDate : 01. Jul 2024, 14:44:57
Autres entêtes
Organisation : A noiseless patient Spider
Message-ID : <v5u8c9$12udb$1@dont-email.me>
References : 1 2 3 4
User-Agent : Mozilla Thunderbird
On 7/1/2024 1:05 AM, Mikko wrote:
On 2024-06-30 17:18:09 +0000, olcott said:
>
Richard just said that he affirms that when DDD correctly
simulated by HHH calls HHH(DDD) that this call returns even
though the semantics of the x86 language disagrees.
>
On 6/30/2024 7:34 AM, Richard Damon wrote:
> It is still true that the xemantics of the x86
> language define the behavior of a set of bytes,
> as the behavior when you ACTUALLY RUN THEM,
> and nothing else.
>
_DDD()
[00002172] 55 push ebp ; housekeeping
[00002173] 8bec mov ebp,esp ; housekeeping
[00002175] 6872210000 push 00002172 ; push DDD
[0000217a] e853f4ffff call 000015d2 ; call HHH(DDD)
[0000217f] 83c404 add esp,+04
[00002182] 5d pop ebp
[00002183] c3 ret
Size in bytes:(0018) [00002183]
>
Richard thinks that he can get away with disagreeing with this
verified fact:
>
The call from DDD to HHH(DDD) when N steps of DDD are correctly
emulated by any pure function x86 emulator HHH cannot possibly
return.
It is your HHH so you should know whether it returns. Others may
have wrong impression about it if they have trusted your lies.
I have never lied about this.
_DDD()
[00002172] 55 push ebp ; housekeeping
[00002173] 8bec mov ebp,esp ; housekeeping
[00002175] 6872210000 push 00002172 ; push DDD
[0000217a] e853f4ffff call 000015d2 ; call HHH(DDD)
[0000217f] 83c404 add esp,+04
[00002182] 5d pop ebp
[00002183] c3 ret
Size in bytes:(0018) [00002183]
DDD is correctly emulated by HHH which calls an
emulated HHH(DDD) to repeat the process until aborted.
Once aborted the DDD emulated by HHH immediately stops.
At no point in this emulation does the call from DDD
correctly emulated by HHH to HHH(DDD) ever return.
You can understand this or fail to understand this
disagreement is flat out incorrect.
-- Copyright 2024 Olcott "Talent hits a target no one else can hit; Geniushits a target no one else can see." Arthur Schopenhauer