RE: question of watchpoint
"Metzger, Markus T" <[email protected]>
| Newsgroups | gmane.comp.gdb.devel |
|---|---|
| Message-ID | <A78C989F6D9628469189715575E55B236B3E2880@IRSMSX104.ger.corp.intel.com> |
The question is what the underlying hardware does. On IA, the watchpoint is evaluated on the linear (virtual) address, so you wouldn't get an exception when modifying the memory via the other mapping. Markus. > -----Original Message----- > From: [email protected] <[email protected]> On Behalf Of > [email protected] > Sent: 22 February 2019 03:06 > To: gdb <[email protected]> > Subject: question of watchpoint > > Hi, guys: > > I have a question about watch-point. > If the program mapped a physical address(PA) to two（or more than one） > virtual address (VA and VB), if I set a watchpiont at Va, after this, I modify VB, > what does gdb do? > Trigger a watchpoint or do nothing? If triggered a watchpoint how to report it? > If anyone knows, pls help me with it. > > Thinks a lot. > > Ron Ren Intel Deutschland GmbH Registered Address: Am Campeon 10-12, 85579 Neubiberg, Germany Tel: +49 89 99 8853-0, www.intel.de Managing Directors: Christin Eisenschmid, , Gary Kershaw Chairperson of the Supervisory Board: Nicole Lau Registered Office: Munich Commercial Register: Amtsgericht Muenchen HRB 186928