* No code to flush instruction cache in gdbserver?
@ 2005-08-01 9:32 Jie Zhang
2005-08-01 13:13 ` Daniel Jacobowitz
0 siblings, 1 reply; 3+ messages in thread
From: Jie Zhang @ 2005-08-01 9:32 UTC (permalink / raw)
To: gdb
Hi,
I have a question about gdbserver. For some architectures it's needed
to flush instruction cache to maintain the cache coherency after
inserting or removing breakpoint. However, I found there is no cache
flush code in gdbserver. So here are my questions:
1. Is it needed to flush instruction cache in gdbserver? If not, why?
2. If yes, is there not code do cache flush in gdbserver or just I
didn't find them?
3. If there is no such code, is there any effort on going to add it currently?
Any comments will be appreciated.
Thanks,
Jie
^ permalink raw reply [flat|nested] 3+ messages in thread
* Re: No code to flush instruction cache in gdbserver?
2005-08-01 9:32 No code to flush instruction cache in gdbserver? Jie Zhang
@ 2005-08-01 13:13 ` Daniel Jacobowitz
2005-08-01 13:25 ` Jie Zhang
0 siblings, 1 reply; 3+ messages in thread
From: Daniel Jacobowitz @ 2005-08-01 13:13 UTC (permalink / raw)
To: Jie Zhang; +Cc: gdb
On Mon, Aug 01, 2005 at 05:32:21PM +0800, Jie Zhang wrote:
> Hi,
>
> I have a question about gdbserver. For some architectures it's needed
> to flush instruction cache to maintain the cache coherency after
> inserting or removing breakpoint.
It's not gdbserver's responsibility. If your kernel fails to flush the
cache after PTRACE_POKETEXT, then report that as a kernel bug.
--
Daniel Jacobowitz
CodeSourcery, LLC
^ permalink raw reply [flat|nested] 3+ messages in thread
* Re: No code to flush instruction cache in gdbserver?
2005-08-01 13:13 ` Daniel Jacobowitz
@ 2005-08-01 13:25 ` Jie Zhang
0 siblings, 0 replies; 3+ messages in thread
From: Jie Zhang @ 2005-08-01 13:25 UTC (permalink / raw)
To: Jie Zhang, gdb
Thank you so much. :-)
Jie
On 8/1/05, Daniel Jacobowitz <drow@false.org> wrote:
> On Mon, Aug 01, 2005 at 05:32:21PM +0800, Jie Zhang wrote:
> > Hi,
> >
> > I have a question about gdbserver. For some architectures it's needed
> > to flush instruction cache to maintain the cache coherency after
> > inserting or removing breakpoint.
>
> It's not gdbserver's responsibility. If your kernel fails to flush the
> cache after PTRACE_POKETEXT, then report that as a kernel bug.
>
> --
> Daniel Jacobowitz
> CodeSourcery, LLC
>
^ permalink raw reply [flat|nested] 3+ messages in thread
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2005-08-01 9:32 No code to flush instruction cache in gdbserver? Jie Zhang
2005-08-01 13:13 ` Daniel Jacobowitz
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