[Qemu-devel][BUG] MIPS statements ei, di no longer work (regression)

[Qemu-devel][BUG] MIPS statements ei, di no longer work (regression)

[Stefan Weil]

Hi,

booting a linux kernel with mips malta no longer works.
Both big and little endian mips r2 stop at assembly code di.

A simple test program shows the same kind of error for
di and ei. Both statements result in this output:

$ ./mipsel-softmmu/qemu-system-mipsel -M malta -kernel /tmp/test-le -d 
in_asm
/home/stefan/src/qemu-trunk/trunk/tcg/tcg.c:1726: tcg fatal error
Abgebrochen (= aborted)

The regression was introduced somewhere after Qemu r4753.

Kind regards
Stefan

Re: [Qemu-devel][BUG] MIPS statements ei, di no longer work (regression)

[Thiemo Seufer]

Stefan Weil wrote:
> Hi,
>
> booting a linux kernel with mips malta no longer works.
> Both big and little endian mips r2 stop at assembly code di.
>
> A simple test program shows the same kind of error for
> di and ei. Both statements result in this output:
>
> $ ./mipsel-softmmu/qemu-system-mipsel -M malta -kernel /tmp/test-le -d  
> in_asm
> /home/stefan/src/qemu-trunk/trunk/tcg/tcg.c:1726: tcg fatal error
> Abgebrochen (= aborted)
>
> The regression was introduced somewhere after Qemu r4753.

Should be fixed now, thanks for the report.


Thiemo

Re: [Qemu-devel][BUG] MIPS statements ei, di no longer work (regression)

[Stefan Weil]

Thiemo Seufer schrieb:
> Stefan Weil wrote:
>   
>> Hi,
>>
>> booting a linux kernel with mips malta no longer works.
>> Both big and little endian mips r2 stop at assembly code di.
>>
>> A simple test program shows the same kind of error for
>> di and ei. Both statements result in this output:
>>
>> $ ./mipsel-softmmu/qemu-system-mipsel -M malta -kernel /tmp/test-le -d  
>> in_asm
>> /home/stefan/src/qemu-trunk/trunk/tcg/tcg.c:1726: tcg fatal error
>> Abgebrochen (= aborted)
>>
>> The regression was introduced somewhere after Qemu r4753.
>>     
>
> Should be fixed now, thanks for the report.
>
>
> Thiemo
ei, di is fixed by your latest changes, thanks.

Now "ext  v0,a1,0x7,0x3" is the next kernel code which
stops Qemu with a tcg fatal error.

Stefan

Re: [Qemu-devel] [BUG] MIPS statements ei, di no longer work (regression)

[Some user]

Stefan Weil-3 wrote:
> 
> Thiemo Seufer schrieb:
>> Stefan Weil wrote:
>>   ...
>>> booting a linux kernel with mips malta no longer works.
>>> Both big and little endian mips r2 stop at assembly code di.
>>>
> 

Confirmed, broken on MIPS in the trunk (rev. 5478): 

# qemu-system-mips -M malta -cpu 24Kc ... 

/qemu/trunk/tcg/tcg.c:1484: tcg fatal error
Aborted


The same command works OK in "Debian GNU/Linux's Repository version",
0.9.1-6 .



Thiemo Seufer schrieb wrote:
> 
>>>
>>> The regression was introduced somewhere after Qemu r4753.
>>>     
>>
>> Should be fixed now, thanks for the report.
>>
>>
>> Thiemo
> 


Stefan Weil-3 wrote:
> 
> ei, di is fixed by your latest changes, thanks.
> 
> Now "ext  v0,a1,0x7,0x3" is the next kernel code which
> stops Qemu with a tcg fatal error.
> 
> Stefan
> 


(In the weeks to come, and not today) I'll do a diff on the Debian Repo
source and the trunk.


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