[Mono-dev] Building Mono on Linux/Alpha

Sergey Tikhonov tsv at solvo.ru
Fri Jun 30 03:22:17 EDT 2006

Zoltan Varga wrote:

>                                                Hi,
>  Exception support requires implementing:
> - the opcodes like throw, start_handler, endfinally
> - the functions in exceptions-<ARCH>.c
> - mono_arch_emit_exceptions ().
> As usual, the best documentation is the code of the other backends, 
> but there
> is some documentation in mono/docs/exception-handling.txt. I suggest
> going throu the tests in exceptions.cs in the order they are in the 
> file, and
> trying to implement the support needed by them. LMF handling can be done
> at a later stage since it is only needed by some later tests.

Hello Zoltan,

I did some progress on exception implemetation. Now it can throw and 
catch them. I got stuck with finding
of correct exception handler if an exception is thrown in unmanaged 
code. In my case the exception is thrown
by mono_fconv_ovf_u8 and my current implementation of 
mono_arch_find_jit_info can't find "ji" info for it
(mono_jit_info_table_find return NULL for it). AMD64 version of 
mono_arch_find_jit_info expects LMF
info for such methods. Do I have to implement LMF support or have to try 
to find previous frame by analizing stack?
Finding of exception handlers for managed code seems to be working.

Thank you,

PS. At what point I should ask to apply my changes to the main 
repository? Of cause it is not complete, but there is
possibility that someone else would be interested to help and there is a 
base to start with.

Sergey Tikhonov

Solvo Ltd.
Saint-Petersburg, Russia
tsv at solvo.ru

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