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Path: ...!eternal-september.org!feeder3.eternal-september.org!news.eternal-september.org!eternal-september.org!.POSTED!not-for-mail From: Mikko <mikko.levanto@iki.fi> Newsgroups: comp.theory Subject: Re: DDD correctly emulated by HHH --- Correct Emulation Defined Date: Thu, 20 Mar 2025 11:16:49 +0200 Organization: - Lines: 28 Message-ID: <vrgme1$2tr56$1@dont-email.me> References: <vrfuob$256og$1@dont-email.me> MIME-Version: 1.0 Content-Type: text/plain; charset=utf-8; format=flowed Content-Transfer-Encoding: 8bit Injection-Date: Thu, 20 Mar 2025 10:16:51 +0100 (CET) Injection-Info: dont-email.me; posting-host="07eb843a3e8d1b9262ebd76c548f87cc"; logging-data="3075238"; mail-complaints-to="abuse@eternal-september.org"; posting-account="U2FsdGVkX18h3hTsQkpa6Iz/hthXEYrS" User-Agent: Unison/2.2 Cancel-Lock: sha1:RD47CAPd9miCpqaQu6vAbRxXlE0= Bytes: 1903 On 2025-03-20 02:32:43 +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] > > When N steps of DDD are emulated by HHH according > to the semantics of the x86 language then these > N steps are emulated correctly. That does not make much sense to define the correct emulation of DDD as it should mean whatever "correct emulation" means when applied to DDD. Althouth promised otherwise on the subject line the meaning of "DDD correctly emulated by HHH" when N is not specified is not defined. The term should be or include "partial emulation" when the intent is that an emulation that could be continued is not is called "correct". -- Mikko