Michael Van Canneyt <mich...@freepascal.org> schrieb am Do., 25. Okt. 2018, 11:51:
> > > On Thu, 25 Oct 2018, Sven Barth via fpc-devel wrote: > > > Michael Van Canneyt <mich...@freepascal.org> schrieb am Do., 25. Okt. > 2018, > > 09:38: > > > >> > >> > >> On Sat, 20 Oct 2018, Simon Kissel wrote: > >> > >>> - Make Exception handling, TLS etc use the infrastructure that > >>> libpthread is providing > >> > >> TLS is handled already by libpthread. I doubt you will gain much there. > >> > >> However, Exception handling is a problem. There are 2 possible ways > ahead: > >> - DWARF exception handling as mentioned by Sven. > >> - Port SEH to be cross platform, this is the approach as taken by Kylix. > >> Kilyx has a small rtlunwind library that mimics the needed run-time > >> functionality > >> offered by Windows. > >> > >> Conceivably, it can be duplicated. wine probably has such a library > which > >> can be used as an inspiration. > >> > >> The needed compiler infrastructure for SEH already exists, so this is > >> most likely > >> the fastest way to proceed. > >> > > > > I'm against emulating SEH. Better implement DWARF exceptions. The > > infrastructure that was created for SEH inside the compiler should help > > nevertheless. > > You can be against, and you don't need to work on it, > but if someone supplies a patch, I don't think we should refuse it. > I don't agree here. > Personally I am also in favour of a more open technique instead of a > technique which is proprietary to a platform, and in this sense I > understand > and endorse your point of view, but beggars can't be choosers. > > There is no problem to have both techniques available. As I wrote, the SEH > is the fastest path. > I have my doubts especially as the rtlunwind stuff of Kylix only works on i386. The SEH mechanism between i386 and all other Windows platforms differs significantly and I doubt that Simon only wants i386 to benefit. Regards, Sven
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