Re: [PATCH 4/5] RISC-V: Add native linux support.

Jim Wilson
2018-10-25T16:40:59Z

On Thu, Oct 25, 2018 at 3:49 AM Andreas Schwab <schwab@suse.de> wrote:
> On Aug 08 2018, Jim Wilson <jimw@sifive.com> wrote:
>
> > + if ((regnum == RISCV_CSR_MISA_REGNUM)
> > + || (regnum == -1))
> > + {
> > + /* TODO: Need to add a ptrace call for this. */
> > + regcache->raw_supply_zeroed (regnum);
>
> ../../gdb/gdb/regcache.c:337: internal-error: void reg_buffer::assert_regnum(int) const: Assertion `regnum >= 0' failed.

I just wrote a patch for that a couple of days ago but have been tied
up with other things and haven't had a chance to submit it yet. It is
effectively the same as the patch Andrew Burgess wrote, though I kept
the braces. I also have a patch to support signal handler frames, and
can now go up to where the signal occurred. Step into signal handler
doesn't work, but I found a comment yesterday that says it isn't
expected to work with software single stepping, so I will just submit
what I already have, as apparently it is as good as it can be for now.

Jim