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Re: [Qemu-devel] Lack of codes in logging


From: Yue Chen
Subject: Re: [Qemu-devel] Lack of codes in logging
Date: Mon, 28 May 2012 22:37:47 -0400

What's the helper function? Thanks.

On Mon, May 28, 2012 at 10:30 PM, 陳韋任 (Wei-Ren Chen) <address@hidden> wrote:
> When I use "log in_asm", "log op" in monitor mode to log instructions, there
> are some situations like follows:
>
> ----------------------------------------------------------------
> IN: 
> 0x7c91ee39:  push   %eax
> 0x7c91ee3a:  call   0x7c9020f5
>
> IN: 
> 0x7c91ee3f:  mov    -0x3c(%ebp),%ax
> ----------------------------------------------------------------

 I bet guess is 0x7c9020f5 is the address of helper function, you can check it
in GDB like this,

(gdb) break *0x7c9020f5

to see what you get. Basically, QEMU will faithfully log any in_asm it executed,
but executing helper function is not included.

Regards,
chenwj

--
Wei-Ren Chen (陳韋任)
Computer Systems Lab, Institute of Information Science,
Academia Sinica, Taiwan (R.O.C.)
Tel:886-2-2788-3799 #1667
Homepage: http://people.cs.nctu.edu.tw/~chenwj


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