To: poletaev
Cc: qemu-devel@nongnu.org
Subject: Re: [Qemu-devel] [PATCH] improve emulation correctness
On Thu, Apr 24, 2014 at 12:35:24PM +0400, poletaev wrote:
There is a set of test, that checks QEMU CPU for similar behavior with
real hardware (http://roberto.greyhats.it/projects/pills.html
On Thu, Apr 24, 2014 at 12:35:24PM +0400, poletaev wrote:
The commit message is vague so I guess the maintainers skipped your
email. I have CCed Paolo, Richard, and Andreas who may be able to
review and apply your patch.
Please make the commit message more specific:
target-i386: don't touch
On Thu, Apr 24, 2014 at 12:35:24PM +0400, poletaev wrote:
There is a set of test, that checks QEMU CPU for similar behavior with real
hardware (http://roberto.greyhats.it/projects/pills.html). Test
reg/pill2579.c can detect, that program is execute in emulated environment.
It is related with
25.04.2014, 21:09, Richard Henderson r...@twiddle.net:
On 04/25/2014 01:13 AM, Dmitry Poletaev wrote:
There is a set of test, that checks QEMU CPU for similar behavior with
real hardware (http://roberto.greyhats.it/projects/pills.html). Test
reg/pill2579.c can detect, that program is
27.04.2014, 20:59, Peter Maydell peter.mayd...@linaro.org:
On 27 April 2014 17:46, Michael Tokarev m...@tls.msk.ru wrote:
25.04.2014 21:24, Peter Maydell wrote:
It is always going to be possible to determine that you're
running on an emulator rather than real hardware, so changing
On 28 April 2014 14:41, Dmitry Poletaev poletaev-q...@yandex.ru wrote:
Let's imagine we analyse a program(may be a malware) and so
run it in emulator. Malware can execute that test and understand
that it run in an emulator. After that malware can make decision,
that someone analyse it and
I'm understand your position.
But why in TCG undefined flags obviously change to zero in some cases?
For example:
af = 0; /* undefined */
It is not a part of Intel specification, what reason was apply that convention?
28.04.2014, 17:49, Peter Maydell peter.mayd...@linaro.org:
On 28 April
On 04/28/2014 06:05 AM, Dmitry Poletaev wrote:
-env-cc_src = (eflags ~(CC_C | CC_O)) |
-(lshift(src ^ t0, 11 - (DATA_BITS - 1)) CC_O) |
+env-cc_src = (eflags ~CC_C) |
((src (DATA_BITS - count)) CC_C);
+if (count == 1) {
+
On 04/28/2014 07:32 AM, Dmitry Poletaev wrote:
I'm understand your position.
But why in TCG undefined flags obviously change to zero in some cases?
For example:
af = 0; /* undefined */
It is not a part of Intel specification, what reason was apply that
convention?
Because it's
25.04.2014 21:24, Peter Maydell wrote:
On 25 April 2014 09:13, Dmitry Poletaev poletaev-q...@yandex.ru wrote:
Emulated program can execute that test and after that
can understand environment not real.
It is always going to be possible to determine that you're
running on an emulator rather
On 27 April 2014 17:46, Michael Tokarev m...@tls.msk.ru wrote:
25.04.2014 21:24, Peter Maydell wrote:
It is always going to be possible to determine that you're
running on an emulator rather than real hardware, so changing
QEMU behaviour just for this is uninteresting. If QEMU
behaves
There is a set of test, that checks QEMU CPU for similar behavior with real
hardware (http://roberto.greyhats.it/projects/pills.html). Test reg/pill2579.c
can detect, that program is execute in emulated environment. It is related with
behavior of rcl instruction. If the number of shifted bits
On 04/25/2014 01:13 AM, Dmitry Poletaev wrote:
There is a set of test, that checks QEMU CPU for similar behavior with real
hardware (http://roberto.greyhats.it/projects/pills.html). Test
reg/pill2579.c can detect, that program is execute in emulated environment.
It is related with behavior
There is a set of test, that checks QEMU CPU for similar behavior with real
hardware (http://roberto.greyhats.it/projects/pills.html). Test
reg/pill2579.c can detect, that program is execute in emulated environment.
It is related with behavior of rcl instruction. If the number of shifted
bits more
On 25 April 2014 09:13, Dmitry Poletaev poletaev-q...@yandex.ru wrote:
There is a set of test, that checks QEMU CPU for similar behavior with real
hardware (http://roberto.greyhats.it/projects/pills.html). Test
reg/pill2579.c can detect, that program is execute in emulated environment.
It
On 04/24/2014 02:35 AM, poletaev wrote:
There is a set of test, that checks QEMU CPU for similar behavior with real
hardware (http://roberto.greyhats.it/projects/pills.html). Test
reg/pill2579.c can detect, that program is execute in emulated environment.
It is related with behavior of rcl
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