Re: [PATCH] RISC-V: Allow setting breakpoints at invalid addresses.

[Jim Wilson <jimw at sifive dot com>]

On Sat, Apr 13, 2019 at 4:16 PM Andrew Burgess
<andrew.burgess@embecosm.com> wrote:
> I think that you can just use something like:
>
>           /* Read the opcode byte to determine the instruction length.  If
>              the read fails this may be because we tried to set the
>              breakpoint at an invalid address.  We provide a fake result
>              which will give a breakpoint length of 4, hopefully when we
>              try to actually insert the breakpoint we will see a failure
>              then too.  */
>           if (target_read_code (*pcptr, buf, 1) == -1)
>             buf[0] = 0;
>
> and avoid the try/catch.

Yes, thanks, this looks a little simpler than what I suggested.  I
confirmed that this works with a riscv64-linux gdb build and make
check.

Jim