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Path: ...!weretis.net!feeder8.news.weretis.net!eternal-september.org!feeder3.eternal-september.org!news.eternal-september.org!.POSTED!not-for-mail From: "Fred. Zwarts" <F.Zwarts@HetNet.nl> Newsgroups: comp.theory Subject: Re: People are still trying to get away with disagreeing with the semantics of the x86 language Date: Tue, 2 Jul 2024 21:22:46 +0200 Organization: A noiseless patient Spider Lines: 68 Message-ID: <v61k27$1oec9$3@dont-email.me> References: <v5pbjf$55h$1@dont-email.me> <v5r5q9$ekvf$1@dont-email.me> <v5s40h$jvgt$1@dont-email.me> <v5tgvj$utcb$1@dont-email.me> <v5u8c9$12udb$1@dont-email.me> <v608ft$1hqo6$1@dont-email.me> <v61hoo$1og2o$1@dont-email.me> MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8; format=flowed Content-Transfer-Encoding: 8bit Injection-Date: Tue, 02 Jul 2024 21:22:47 +0200 (CEST) Injection-Info: dont-email.me; posting-host="53ee6a76ae1277aa2fa0ccc5a0217e91"; logging-data="1849737"; mail-complaints-to="abuse@eternal-september.org"; posting-account="U2FsdGVkX18JKHkyGGJMIhX/ecor72dc" User-Agent: Mozilla Thunderbird Cancel-Lock: sha1:7dUgCoZwRunIYwZHIYeFHfxH+/0= In-Reply-To: <v61hoo$1og2o$1@dont-email.me> Content-Language: en-GB Bytes: 4041 Op 02.jul.2024 om 20:43 schreef olcott: > On 7/2/2024 1:59 AM, Mikko wrote: >> On 2024-07-01 12:44:57 +0000, olcott said: >> >>> 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. >> >> At least you have claimed more than proven. >> >>> _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. >> >> The correctness remain unproven. >> > > IT IS PROVEN BY THE SEMANTICS OF THE X86 LANGUAGE > THAT YOU REMAIN WILLFULLY IGNORANT OF SEMANTICS OF > THE X86 LANGUAGE DOES NOT MEAN IT HAS NOT BEEN PROVEN. > Please, point to the paragraph in the specification of the X86 language that says that a two cycle recursion should be aborted after one cycle. Claiming that the abort is related to the x86 language is apparently wilfully incorrect.