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Re: How to use gdbserver for X86 host with arm-linux target ?
- From: "Ulrich Weigand" <uweigand at de dot ibm dot com>
- To: pedro at codesourcery dot com (Pedro Alves)
- Cc: gdb at sourceware dot org, karl dot leplat at parrot dot com (karl leplat)
- Date: Mon, 12 Sep 2011 19:24:36 +0200 (CEST)
- Subject: Re: How to use gdbserver for X86 host with arm-linux target ?
Pedro Alves wrote:
> On Monday 12 September 2011 12:24:01, karl leplat wrote:
> > Hi,
> > When i inserted a hardware breakpoint, i got the result :
> > Side gdb:
> > Warning:
> > Cannot insert hardware breakpoint 1.
> > Could not insert hardware breakpoints:
> > You may have requested too many hardware breakpoints/watchpoints.
> > Side gdbserver:
> > In the file: "gdbserver/linux-arm-low.c" , i have seen that the target
> > has not registered the function insert_point.
> > Is it normal ?
> Yes. The arm-linux gdbserver port was never taught about
> managing breakpoints itself. When that callback is not installed,
> gdb itself inserts breakpoints in program memory, using regular
> memory writes to plant the breakpoint insn.
> > Is there a solution ?
> There's code in native arm port of gdb to support hardware breakpoints
> and watchpoints (arm-linux-nat.c). Someone interested should be able
> to port it to gdbserver.
As it happens, this is what I've been working on recently. I've just
posted a patch implementing this feature:
Dr. Ulrich Weigand
GNU Toolchain for Linux on System z and Cell BE