Add unwind annotations for freebsd/x86 getcontext.S. Rearrange the code to put the slow branch out of main body, and pinch the fixed amount of stack space to be able to annotate the code.
Add unwind annotations for freebsd/x86 getcontext.S.
Rearrange the code to put the slow branch out of main body,
and pinch the fixed amount of stack space to be able to annotate
the code.

krytarowski/libunwind,libunwind/libunwind,dagar/libunwind,evaautomation/libunwind,rantala/libunwind,unkadoug/libunwind,tkelman/libunwind,vtjnash/libunwind,CyanogenMod/android_external_libunwind,rntz/libunwind,maltek/platform_external_libunwind,SyndicateRogue/libunwind,rogwfu/libunwind,tronical/libunwind,zliu2014/libunwind-tilegx,djwatson/libunwind,fillexen/libunwind,joyent/libunwind,tkelman/libunwind,krytarowski/libunwind,DroidSim/platform_external_libunwind,pathscale/libunwind,project-zerus/libunwind,0xlab/0xdroid-external_libunwind,fillexen/libunwind,rntz/libunwind,dagar/libunwind,cms-externals/libunwind,rogwfu/libunwind,project-zerus/libunwind,lat/libunwind,Keno/libunwind,mpercy/libunwind,maltek/platform_external_libunwind,SyndicateRogue/libunwind,DroidSim/platform_external_libunwind,evaautomation/libunwind,Chilledheart/libunwind,0xlab/0xdroid-external_libunwind,krytarowski/libunwind,wdv4758h/libunwind,dreal-deps/libunwind,mpercy/libunwind,0xlab/0xdroid-external_libunwind,atanasyan/libunwind,tony/libunwind,yuyichao/libunwind,joyent/libunwind,dreal-deps/libunwind,vegard/libunwind,rogwfu/libunwind,atanasyan/libunwind,wdv4758h/libunwind,lat/libunwind,Keno/libunwind,wdv4758h/libunwind,geekboxzone/lollipop_external_libunwind,rantala/libunwind,zeldin/platform_external_libunwind,zliu2014/libunwind-tilegx,fdoray/libunwind,Keno/libunwind,yuyichao/libunwind,igprof/libunwind,vtjnash/libunwind,geekboxzone/lollipop_external_libunwind,jrmuizel/libunwind,geekboxzone/mmallow_external_libunwind,joyent/libunwind,android-ia/platform_external_libunwind,CyanogenMod/android_external_libunwind,adsharma/libunwind,olibc/libunwind,dropbox/libunwind,djwatson/libunwind,androidarmv6/android_external_libunwind,djwatson/libunwind,dagar/libunwind,tony/libunwind,jrmuizel/libunwind,DroidSim/platform_external_libunwind,jrmuizel/libunwind,ehsan/libunwind,libunwind/libunwind,bo-on-software/libunwind,atanasyan/libunwind-android,cms-externals/libunwind,android-ia/platform_external_libunwind,tronical/libunwind,igprof/libunwind,martyone/libunwind,atanasyan/libunwind-android,dreal-deps/libunwind,zeldin/platform_external_libunwind,cms-externals/libunwind,pathscale/libunwind,martyone/libunwind,maltek/platform_external_libunwind,unkadoug/libunwind,Chilledheart/libunwind,rntz/libunwind,zeldin/platform_external_libunwind,vegard/libunwind,bo-on-software/libunwind,evaautomation/libunwind,atanasyan/libunwind,geekboxzone/lollipop_external_libunwind,yuyichao/libunwind,geekboxzone/mmallow_external_libunwind,libunwind/libunwind,fdoray/libunwind,SyndicateRogue/libunwind,Chilledheart/libunwind,dropbox/libunwind,lat/libunwind,vtjnash/libunwind,bo-on-software/libunwind,fillexen/libunwind,cloudius-systems/libunwind,martyone/libunwind,tkelman/libunwind,dropbox/libunwind,zliu2014/libunwind-tilegx,frida/libunwind,rantala/libunwind,geekboxzone/mmallow_external_libunwind,CyanogenMod/android_external_libunwind,vegard/libunwind,frida/libunwind,adsharma/libunwind,project-zerus/libunwind,igprof/libunwind,unkadoug/libunwind,cloudius-systems/libunwind,androidarmv6/android_external_libunwind,tronical/libunwind,mpercy/libunwind,olibc/libunwind,tony/libunwind,pathscale/libunwind,frida/libunwind,ehsan/libunwind,android-ia/platform_external_libunwind,adsharma/libunwind,fdoray/libunwind,androidarmv6/android_external_libunwind,atanasyan/libunwind-android,olibc/libunwind,cloudius-systems/libunwind,ehsan/libunwind