Startup problem on ARM
gback at cs.utah.edu
Wed Nov 24 15:59:52 PST 1999
> Stefan Hellkvist wrote:
> | My name is Stefan and I'm trying to get kaffe 1.0.5 working on a
> | Netwinder (ARM-linux). I'm using the debian disk image (small
> | image with kernel 2.2.10). I built Kaffe without the JIT and it built ok but
> | when I run a simple Hello world program it crashes in the startup
> | process like this:
> There are many versions of the ARM processor out there. Early versions of
> the ARM did not support byte and 16-bit load/store instructions, so C
> char/short were 32-bit aligned on those versions. Java's byte and short
> are likewise aligned.
> Later versions of the ARM (such as the Netwinder's StrongARM) have byte
> load/store instructions so they don't have these restrictions.
> With this in mind, determine which structure padding convention is in use
> by your system and investigate from there.
To add to what Dave said:
a) You can check what alignment your tools are configured for by compiling
and running kaffe/developers/alignment_of_size.c. This must match what
Kaffe assumes internally.
b) More info about alignment on the arm than you ever wanted to know:
The ARM alignment FAQ http://www.netwinder.org/~brianbr/alignment.html
More information about the kaffe