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From: Mikko <mikko.levanto@iki.fi>
Newsgroups: comp.theory
Subject: Re: DDD correctly emulated by EEE --- Correct Emulation Defined
Date: Tue, 25 Mar 2025 11:38:58 +0200
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On 2025-03-24 14:08:27 +0000, olcott said:

> On 3/24/2025 2:30 AM, Mikko wrote:
>> On 2025-03-23 17:10:48 +0000, olcott said:
>> 
>>> On 3/23/2025 4:11 AM, Mikko wrote:
>>>> On 2025-03-23 03:57:30 +0000, olcott said:
>>>> 
>>>>> On 3/22/2025 9:53 PM, Richard Damon wrote:
>>>>>> On 3/22/25 2:00 PM, olcott wrote:
>>>>>>> On 3/22/2025 12:34 PM, Richard Damon wrote:
>>>>>>>> On 3/22/25 10:52 AM, olcott wrote:
>>>>>>>>> _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 EEE(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]
>>>>>>>>> 
>>>>>>>>> When finite integer N instructions of the above x86
>>>>>>>>> machine language DD are emulated by each x86 emulator
>>>>>>>>> EEE[N] at machine address [000015c3] according to the
>>>>>>>>> semantics of the x86 language no DD ever reaches its own
>>>>>>>>> "ret" instruction at machine address [00002155] and
>>>>>>>>> terminates normally.
>>>>>>>>> 
>>>>>>>> 
>>>>>>>> Your can't emulate the above code for N > 4, as you get into undefine memory.
>>>>>>>> 
>>>>>>> 
>>>>>>> I have already addressed this objection dozens of times.
>>>>>>> 
>>>>>> 
>>>>>> No you haven't. You have given several different LIES about it.
>>>>>> 
>>>>>> As I have pointed out, if you don't include Halt7.c as part of the 
>>>>>> definition, then you can't do it as you are looking at undefined memory.
>>>>>> 
>>>>> 
>>>>> Your lack of technical competence is showing.
>>>>> (1) We are talking about a hypothetical infinite
>>>>> set of pure x86 emulators that have no decider code.
>>>>> 
>>>>> (2) The memory space of x86 machine code is not
>>>>> in the C source file, it is in the object file.
>>>> 
>>>> It isn't in the object file, either. Only the initial values of some
>>>> memory locations are there. The object file does not even specify
>>>> where in the memory space those locations are. The execution of a
>>>> program requires a memory space larger than the object file.
>>>> 
>>> 
>>> I patch the Halt7.obj file so that functions
>>> are at a fixed address. This file is never linked.
>> 
>> Doesn't affect the fact that important parts of the memory space are not
>> containted in the object file.
>> i
> 
> Richard stupidly complained that III could not call EEE
> because he stupidly believed that there were in different
> memory spaces.

Irrelevant to anything I said.

Anyway, it is not a good idea to lie about another person.

-- 
Mikko