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From: "luis.machado at arm dot com" <sourceware-bugzilla@sourceware.org>
To: gdb-prs@sourceware.org
Subject: [Bug tdep/29423] [gdb, tdep/aarch64] FAIL:
 gdb.base/watchpoint-unaligned.exp: continue (timeout)
Date: Wed, 12 Apr 2023 13:12:57 +0000
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https://sourceware.org/bugzilla/show_bug.cgi?id=3D29423

Luis Machado <luis.machado at arm dot com> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
             Status|WAITING                     |NEW

--- Comment #18 from Luis Machado <luis.machado at arm dot com> ---
Thanks!

That gives me a good indication of what's going wrong.

Looks like these blocks in
gdb/nat/aarch64-linux-hw-point.c:aarch64_linux_get_debug_reg_capacity are
failing:

  if (ptrace (PTRACE_GETREGSET, tid, NT_ARM_HW_WATCH, &iov) =3D=3D 0
      && compatible_debug_arch (AARCH64_DEBUG_ARCH (dreg_state.dbg_info)))

and

  if (ptrace (PTRACE_GETREGSET, tid, NT_ARM_HW_BREAK, &iov) =3D=3D 0
      && compatible_debug_arch (AARCH64_DEBUG_ARCH (dreg_state.dbg_info)))

I suppose ptrace wouldn't fail, so I'm guessing compatible_debug_arch might=
 be
the culprit, since it checks a hardcoded number of variations of
AARCH64_DEBUG_ARCH_V8*, and we may be returning false if the AARCH64_DEBUG_=
ARCH
is outside of the expected range.

We might need a new bug for this.

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