Path: ...!3.eu.feeder.erje.net!feeder.erje.net!eternal-september.org!feeder3.eternal-september.org!news.eternal-september.org!.POSTED!not-for-mail
From: olcott <polcott333@gmail.com>
Newsgroups: comp.theory
Subject: Re: DDD emulated by HHH --- (does not refer to prior posts)
Date: Fri, 6 Sep 2024 06:20:52 -0500
Organization: A noiseless patient Spider
Lines: 30
Message-ID: <vbeoik$punj$2@dont-email.me>
References: <vajdta$2qe9s$1@dont-email.me> <vak3a0$2teq9$1@dont-email.me>
 <vakhnf$302rl$2@dont-email.me> <vamk7l$3d7ki$1@dont-email.me>
 <van3v7$3f6c0$5@dont-email.me> <vap7b1$3sobs$1@dont-email.me>
 <vapvbc$3vumk$5@dont-email.me>
 <e10aee5b3ede543da42ba76ac4d7f0a0fe762695@i2pn2.org>
 <vasmn8$hmpd$1@dont-email.me> <vaumg9$ut9s$1@dont-email.me>
 <vav0r9$10jsm$1@dont-email.me> <vavb4a$11uqn$1@dont-email.me>
 <vavca1$1283f$1@dont-email.me> <vave2b$11uqn$7@dont-email.me>
 <vavfoi$12m8t$4@dont-email.me> <vb1hq0$1fgj7$1@dont-email.me>
 <vb4enb$2rs5t$3@dont-email.me> <vb6iop$39hrf$1@dont-email.me>
 <vb74m3$3b4ub$11@dont-email.me> <vbel4p$pko5$1@dont-email.me>
MIME-Version: 1.0
Content-Type: text/plain; charset=UTF-8; format=flowed
Content-Transfer-Encoding: 8bit
Injection-Date: Fri, 06 Sep 2024 13:20:53 +0200 (CEST)
Injection-Info: dont-email.me; posting-host="be3ab62c57446c7ddf1fbbd69383ba43";
	logging-data="850675"; mail-complaints-to="abuse@eternal-september.org";	posting-account="U2FsdGVkX18V8QlcVIQBTT4FxIHtKV9x"
User-Agent: Mozilla Thunderbird
Cancel-Lock: sha1:R9H6Y4t6r0aK66XtSrxCskoLnTY=
Content-Language: en-US
In-Reply-To: <vbel4p$pko5$1@dont-email.me>
Bytes: 2879

On 9/6/2024 5:22 AM, Mikko wrote:
> On 2024-09-03 13:58:27 +0000, olcott said:
>>
>> _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]
>>
>> Anyone that is not dumber than a box of rocks can tell
>> that machine address 0000217f is unreachable for every
>> DDD emulated by HHH according to the semantics of the
>> x86 language where HHH emulates itself emulating DDD.
> 
> Anyone who really knows either x86 assembly or machine langage or
> C can see that the machine address 217f is unreachachable only if
> the program at 000015d2, named HHH, does not return.
> 

That is not exactly true. There is a directly executed HHH
that always returns and a DDD emulated by HHH that calls
an emulated HHH that never returns.

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