Re: mmx instruction support on bohcs

And I have find some useful clue for that.But I am not quite sure.

at cpu/fetchdecode.cc :
  if (! BX_CPU_THIS_PTR sse_ok)
  {
     if (op_flags & BX_PREPARE_SSE)
 {
        if (i->execute != &BX_CPU_C::BxError) i->execute =
&BX_CPU_C::BxNoSSE;
        return(1);
     }

sse_ok affect bochs's execution for pxor instr .

And sse_ok is assigned according to some bits of cr0 and cr4.

hope for guide .









2013/4/25 Hatte John <[email protected]>

> here is the output at the start of log file :
>
>  00000000000i[     ] System configuration
> 00000000000i[     ]   processors: 1 (cores=1, HT threads=1)
> 00000000000i[     ]   A20 line support: yes
> 00000000000i[     ] IPS is set to 4000000
> 00000000000i[     ] CPU configuration
> 00000000000i[     ]   level: 6
> 00000000000i[     ]   SMP support: no
> 00000000000i[     ]   APIC support: xapic
> 00000000000i[     ]   FPU support: yes
> 00000000000i[     ]   MMX support: yes
> 00000000000i[     ]   3dnow! support: no
> 00000000000i[     ]   SEP support: yes
> 00000000000i[     ]   SSE support: sse2
> 00000000000i[     ]   XSAVE support: no
> 00000000000i[     ]   AES support: no
> 00000000000i[     ]   MOVBE support: no
> 00000000000i[     ]   ADX support: no
> 00000000000i[     ]   x86-64 support: no
> 00000000000i[     ]   MWAIT support: yes
>
> My bochs halt at this :  0x40092587:  pxor   %xmm0,%xmm0 .
>
>
> Thanks!
>
>
>
>
>
>
>
>
>
>
>
> 2013/4/25 Stanislav <[email protected]>
>
>> Not, enough. How about complete config?****
>>
>> What Bochs writes you in the log file when it starts ?****
>>
>> ** **
>>
>> >BTW,do you know some irc channel dedicated to bochs ?****
>>
>> ** **
>>
>> Probably there is old IRC channel but nobody is there ….****
>>
>> ** **
>>
>> Stanislav****
>>
>> ** **
>>
>> *From:* Hatte John [mailto:[email protected]]
>> *Sent:* Thursday, April 25, 2013 5:40 AM
>> *To:* Stanislav
>> *Cc:* [email protected]
>> *Subject:* Re: [Bochs-developers] mmx instruction support on bohcs****
>>
>> ** **
>>
>> thanks at first .****
>>
>> ** **
>>
>> here is my cpuid config set :cpuid: mmx =1,   sep=1  ,and my coulevel is 6
>> ****
>>
>> ** **
>>
>> BTW,do you know some irc channel dedicated to bochs ?****
>>
>> ** **
>>
>> ** **
>>
>> ** **
>>
>> 2013/4/25 Stanislav <[email protected]>****
>>
>> You didn’t post your .bochsrc and configure options so nobody can guess
>> what are doing wrong …****
>>
>>  ****
>>
>> *From:* Hatte John [mailto:[email protected]]
>> *Sent:* Wednesday, April 24, 2013 6:52 PM
>> *To:* [email protected]
>> *Subject:* [Bochs-developers] mmx instruction support on bohcs****
>>
>>  ****
>>
>>    ****
>>
>>    My custom bochs can not recognize this inst:  pxor   %xmm0,%xmm0****
>>
>>    I think that is needed one config option set for cpuid in bochsrc file
>> .****
>>
>>    how can I write the config option?****
>>
>>   ****
>>
>>    I have write mmx=1 , but it can not exec that instrc .****
>>
>>    So I am confused . I am using 2.6 version .****
>>
>>  ****
>>
>>    Thanks in advance !****
>>
>> ** **
>>
>
>

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