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Re: [PATCH qemu v4 0/2] ARM: Add support for V8M special registers in GD
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From: |
Peter Maydell |
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Subject: |
Re: [PATCH qemu v4 0/2] ARM: Add support for V8M special registers in GDB stub |
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Date: |
Tue, 7 Feb 2023 17:51:59 +0000 |
On Tue, 7 Feb 2023 at 17:37, ~dreiss-meta <dreiss-meta@git.sr.ht> wrote:
>
> New in v4: Moved arm_v7m_mrs_control out of the `#ifdef
> CONFIG_USER_ONLY` block, unbreaking the user-only build. The downside
> is that this function is now taking up space in the user-only binary,
> but it can (presumably?) never be used because there are no user modes
> for v8m cores. Let me know if you'd prefer for me to wrap `#ifdef
> CONFIG_USER_ONLY` around the v8m registers in the gdb stub. Also, let
> me know if you'd prefer a separate commit for renaming and moving
> v7m_mrs_control.
We do support the M-profile cores in the linux-user executables,
so this code is "live". The view that the guest program and
the debugger should see is that the core is always in
user mode (aka unprivileged, Thread mode).
thanks
-- PMM