** Changed in: qemu
Status: New => Confirmed
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https://bugs.launchpad.net/bugs/661696
Title:
incomplete emulation of fstenv under TCG
Status in QEMU:
Confirmed
Bug descriptio
Thanks for the links Nikita.
I'll see if I can add the missing features (fpop, fpdp) to the patch.
Since I don't depend on those features, it will be relatively low
priority for me, and I will probably not get to it before late August.
// MOKI
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Thanks for porting the patch.
This is the mailing thread I started back in 2010 with that patch:
http://lists.gnu.org/archive/html/qemu-devel/2010-11/msg02497.html
That thread has some problems noted.
Sadly, I did not have enough free time to investigate all the other
places that should be fixed
Am 29.06.2013 19:10, schrieb Morten Shearman Kirkegaard:
> The bug is still present in the newly released QEMU-1.5.1. I've ported
> Chalkerx's patch to this release as well. See attached patch.
>
> Is there a problem with this patch, since it has not been committed?
>
> // MOKI
>
> ** Patch adde
The bug is still present in the newly released QEMU-1.5.1. I've ported
Chalkerx's patch to this release as well. See attached patch.
Is there a problem with this patch, since it has not been committed?
// MOKI
** Patch added: "patch-qemu-1.5.1-fpip.diff"
https://bugs.launchpad.net/qemu/+bug/
I've had quite some problems with this bug as well. It would be really
nice if it could be fixed.
I have ported Chalkerx's patch to QEMU-1.5.0. The patch is attached.
// MOKI
** Patch added: "patch-qemu-1.5.0-fpip.diff"
https://bugs.launchpad.net/qemu/+bug/661696/+attachment/3683865/+files/p
Ok. Here is a full patch to QEMU 0.13.
Works with and without -singlestep.
Works with all fpu instructions.
Should also work with fsave.
** Patch added: "Bug fix. For version 0.13. This patch fixes the bug (for me)
completely."
https://bugs.launchpad.net/qemu/+bug/661696/+attachment/1744859
This was just an example of how it could be done.
$ ./qemu-0.12.5/i386-linux-user/qemu-i386 -singlestep ./test
80483b4 80483b4
--
incomplete emulation of fstenv under TCG
https://bugs.launchpad.net/bugs/661696
You received this bug notification because you are a member of qemu-
devel-ml, which i
Example patch.
Works only for FLDZ and only in -singlestep mode.
Based on version 0.12.5.
** Patch added: "Patch. Works only for FLDZ and only in -singlestep mode .
Based on 0.12.5."
https://bugs.launchpad.net/qemu/+bug/661696/+attachment/1738944/+files/patch.diff
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incomplete emulation of
The full testcase:
#include
extern void *x;
int main() {
int a;
asm volatile ("x: fldz\n\
push %%edx\n\
fnstenv -0xc(%%esp)\n\
pop %%edx\n" : "=d" (a) : : "memory");
printf ("%x %x\n", a, &x);
return 0;
}
$ gcc -m32 test.c -o test
$ ./test
80483ae 80483ae
$ ./qemu/i386-linux
Any news on this bug?
--
incomplete emulation of fstenv under TCG
https://bugs.launchpad.net/bugs/661696
You received this bug notification because you are a member of qemu-
devel-ml, which is subscribed to QEMU.
Status in QEMU: New
Bug description:
Steps to reproduce:
1) Install Windows (trie
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