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Re: [Qemu-trivial] [Qemu-devel] [PATCH] tests: Fix 'make test' for i686

From: Stefan Weil
Subject: Re: [Qemu-trivial] [Qemu-devel] [PATCH] tests: Fix 'make test' for i686 hosts (buildregression))
Date: Fri, 07 Mar 2014 14:19:36 +0100
User-agent: Mozilla/5.0 (X11; Linux i686; rv:24.0) Gecko/20100101 Thunderbird/24.3.0

Am 07.03.2014 13:56, schrieb Andreas Färber:
> Am 07.03.2014 13:40, schrieb Stefan Weil:
>> Am 07.03.2014 13:06, schrieb Alex Bennée:
>>> Stefan Weil <address@hidden> writes:
>>>> 'make test' is broken at least since commit
>>>> baacf04799ace72a9c735dd9306a1ceaf305e7cf. Several source files were moved
>>>> to util/, and some of them there split, so add the missing prefix and new
>>>> files to fix the compiler and linker errors.
> [...]
>> In the meantime I tried older versions. Even version 1.1 already shows
>> unwanted differences between native and QEMU emulated FPU operations.
>> The test binary is now available from this URL:
>> http://qemu.weilnetz.de/test/user/i386/test-i386
>> Run it native and with qemu-i386 and compare the output of both runs
>> to see the problems.
> So... is QEMU or the test mistaken? :)
> Regards,
> Andreas

Hi Andreas,

test-i386 does some calculations and prints the results (see source code
tests/tcg/test-i386.c). If the user mode emulation of QEMU works, it
should not matter whether that executable runs native or emulated and
both outputs be identical. They aren't - that's why I think we have a
TCG problem to solve.


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