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Re: [Qemu-devel] Provide safe_syscall for s390x
From: |
Michael Tokarev |
Subject: |
Re: [Qemu-devel] Provide safe_syscall for s390x |
Date: |
Mon, 17 Oct 2016 13:55:38 +0300 |
User-agent: |
Mozilla/5.0 (X11; Linux x86_64; rv:45.0) Gecko/20100101 Icedove/45.4.0 |
17.10.2016 13:53, Thomas Huth wrote:
> On 17.10.2016 12:49, Michael Tokarev wrote:
>> 17.10.2016 13:39, Michael Tokarev wrote:
>>
>>> (cc is gcc 6.2.0)
>>>
>>> I've no idea which -march is the default and what choices are available.
>>
>> $ gcc -march=?
>> gcc: error: unrecognized argument in option '-march=?'
>> gcc: note: valid arguments to '-march=' are: g5 g6 native z10 z13 z196
>> z9-109 z9-ec z900 z990 zEC12
>>
>> I guess g5 is the default?
>
> I hope it is not the default - at least not for -m64.
Nope, z900 is the default. For it and z990, asm generates that error.
> Could you please run the following and post the results:
>
> gcc -Q --help=target
The following options are target specific:
-m31 [disabled]
-m64 [enabled]
-march= z900
-mbackchain [disabled]
-mbionic [disabled]
-mbranch-cost= 0x1
-mdebug [disabled]
-mesa [disabled]
-mfused-madd
-mglibc [enabled]
-mhard-dfp [enabled]
-mhard-float [enabled]
-mhotpatch=
-mhtm [enabled]
-mlong-double-128 [disabled]
-mlong-double-64 [enabled]
-mlra [enabled]
-mmusl [disabled]
-mmvcle [disabled]
-mno-stack-guard
-mno-stack-size
-mpacked-stack [disabled]
-msmall-exec [disabled]
-msoft-float [disabled]
-mstack-guard= 0
-mstack-size= 0
-mtune= [default]
-muclibc [disabled]
-mvx [enabled]
-mwarn-dynamicstack [disabled]
-mwarn-framesize= 0
-mzarch [enabled]
-mzvector [disabled]
Thanks,
/mjt