Re: _Unwind_Resume() references in libgcc division functions

[Sebastian Huber <sebastian.huber@embedded-brains.de>]

On 21/06/2022 15:24, Jakub Jelinek wrote:
> On Tue, Jun 21, 2022 at 03:13:19PM +0200, Sebastian Huber wrote:
>> Hello,
>>
>> I noticed that several division related routines provided by libgcc such as
>> __divdi3, __moddi3 and __umoddi3 have references to _Unwind_Resume for the
>> sparc-rtems target. For example:
> 
> That is because:
> 
> ifeq ($(LIB2_DIVMOD_EXCEPTION_FLAGS),)
> # Provide default flags for compiling divmod functions, if they haven't been
> # set already by a target-specific Makefile fragment.
> LIB2_DIVMOD_EXCEPTION_FLAGS := -fexceptions -fnon-call-exceptions
> endif
> 
> which is there so that e.g. Ada or other -fnon-call-exceptions languages can
> have properly working divisions.

Thanks for the hint. It seems also the optimization level has an impact. 
The _Unwind_Resume dependency is only present if I use 
CFLAGS_FOR_TARGET="-O0 -g".

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