[Bug target/64379] VFP register restore in ARM epilogue can break indirect tailcalls

[ebotcazou at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=64379

--- Comment #11 from Eric Botcazou <ebotcazou at gcc dot gnu.org> ---
> While we are here, what's the thought on deprecating mapcs-frame in the
> arm-wrs-vxworks community ?  It is not really something that's part of the
> ABI (it predates EABI), doesn't work with Thumb2 and not tested regularly
> and we keep finding issues with this.
> 
> Can arm-wrs-vxworks move to using the EHABI information and unwinding
> information from there to handle such backtraces - after all libunwind has
> the capability now for unwinding ARM EHABI tables if you needed a generic
> library to do this ? 

Let me check what the status of the just released VxWorks 7 is with the
resident expert here at AdaCore.  IIUC there is a clear move to EABI, but I'm
not sure if it is complete.