On Sun, 2007-06-03 at 19:01 +0100, Pedro Alves wrote: > The exception c++ model that both mingw32ce and cegcc use is the sjlj model. > It is similar with the SEH model on x86. It certainly works. > > SEH is an OS thing, so it always works, but it happens that registering > handlers manually is much harder on ARM than it is on x86/9x/NT.
Pedro,
I've been trying to figure out what kind of exception handling gcc
supports.
I started by simply trying to use -fexceptions, but that doesn't appear
to influence what the compiler does. I tried it on
arm-wince-mingw32ce-gcc, the size of the .o file produced doesn't
change.
Trying the same on the x86 gcc that comes with my Linux distribution,
this does produce a larger .o file. Objdump reveals that something
called ".eh_frame" is added.
I then looked at the gcc sources, and found a configure option called
--enable-sjlj-exceptions . Even with that turned on, I don't see a
difference in the .o file produced by the ARM compiler.
The src/gcc/gcc/doc directory comes up almost empty if you grep for
SJLJ, and src/gcc/gcc/except.[ch] don't contain much documentation
either.
What am I missing ?
Danny
--
Danny Backx ; danny.backx - at - scarlet.be ; http://danny.backx.info
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