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.
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.
So hopefully we will be able to compare and can still choose the better/faster
one.
Michael.
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