RE: [Xen-devel] [PATCH] enable modifying of registers from gdb

["Kamble, Nitin A" <nitin.a.kamble@xxxxxxxxx>]

Hi Keir, Ian,
   I have updated the code with more fixes/changes in the patch and also 
cleaned up the map_domain_va code further. Now gdb is able to get guest memory 
correctly in various guest modes. 

For all these combinations of guests ...
   * 32bit guest on 32bit xen
   * 64bit guest on 64bit xen
   * 32bit guest on 64bit xen

... gdb is able to access the guest memory properly in these modes:
* Paging disabled kernel
* Paging enabled kernel
* Real mode
* User process memory
* 2M kernel pages on 64bit guest
* 4K user pages on 64bit guest

Also the setting of registers works for all the combinations.

Diffstat of the patch:
 tools/libxc/xc_ptrace.c    |  383 ++++++++++++++++++++++++---------------------
 tools/libxc/xc_ptrace.h    |    6
 xen/arch/x86/hvm/vmx/vmx.c |   47 +++++
 xen/common/domain.c        |   17 +
 4 files changed, 274 insertions(+), 179 deletions(-)

Please Comment or Apply.

Signed-Off-By: Nitin A Kamble <nitin.a.kamble@xxxxxxxxx> 

Thanks & Regards,
Nitin
-----------------------------------------------------------------------------------
Open Source Technology Center, Intel Corp
________________________________________
From: xen-devel-bounces@xxxxxxxxxxxxxxxxxxx 
[mailto:xen-devel-bounces@xxxxxxxxxxxxxxxxxxx] On Behalf Of Kamble, Nitin A
Sent: Monday, March 27, 2006 8:12 PM
To: Keir.Fraser@xxxxxxxxxxxx; Mallick, Asit K
Cc: xen-devel@xxxxxxxxxxxxxxxxxxx
Subject: [Xen-devel] [PATCH] enable modifying of registers from gdb

Hi Keir, Ian,
   There were couple of bugs in the my friday's patch to enable 64bit gdb 
debugging. I have fixed them in this patch. Also cleaned up the code for 
map_domain_va_XX codet. Other than that, now this patch also enables setting of 
registers from the gdb. Please comment or Apply.

Signed-Off-By: Nitin A Kamble <nitin.a.kamble@xxxxxxxxx>

Thanks & Regards,
Nitin
-----------------------------------------------------------------------------------
Open Source Technology Center, Intel Corp

Attachment: gdbserver_setregs_2M_pages_32bit_on_64bit_fix.patch
Description: gdbserver_setregs_2M_pages_32bit_on_64bit_fix.patch

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