Re: CVS commit: pkgsrc/meta-pkgs/boost

[maya%netbsd.org@localhost]

On Sat, Sep 02, 2017 at 10:42:12AM +0000, Manuel Bouyer wrote:
> Module Name:  pkgsrc
> Committed By: bouyer
> Date:         Sat Sep  2 10:42:12 UTC 2017
> 
> Modified Files:
>       pkgsrc/meta-pkgs/boost: distinfo
> Added Files:
>       pkgsrc/meta-pkgs/boost/patches:
>           patch-libs_context_src_asm_jump_arm_aapcs_elf_gas.S
>           patch-libs_context_src_asm_ontop_arm_aapcs_elf_gas.S
> 
> Log Message:
> If we have a VFP, assume it is VFP3. In the default mode on NetBSD, the
> assembler complains:
> libs/context/src/asm/ontop_arm_aapcs_elf_gas.S:55: Error: selected processor does not support `vstmia sp,{d8-d15}' in ARM mode
> libs/context/src/asm/ontop_arm_aapcs_elf_gas.S:69: Error: selected processor does not support `vldmia sp,{d8-d15}' in ARM mode
> 
> XXX what about VFP4 ?
> 
> Should fix PR pkg/52425.

Hello bouyer,

It seems ARM has two variants: VFPv3-D32 and VFPv3-D16.
D16 is the common denominator, but D32 has twice as many registers.
I'm not an expert on ARM, but it sounds like it is assuming D16?

It may fail unexpectedly if built for VFPv3-D32 :-(

Also, vstmia is VFPv3, and will SIGILL on VFPv1 (the original report
was for v6).

Another option is to disable boost-context, which we are doing for some
architectures.