H8300 Multilib Questions

[Joel Sherrill]

OK.  I have done what I think is the minimum to get h8300 to build multilib.
There are LOTS of warnings where code assumes int is bigger than 16 bits
particularly in the DOS filesystem but I can build the tree now.

I have attached the two patches. 

machine-param.h.diff is the diff of the RTEMS specific machine/param.h
from newlib.  I just hacked on the installed version to get things to 
compile.

cpukit-h8300.diff is a surprisingly small diff required to get the 
compilation
errors  out of CPUKIT for this target.

There are nearly 300 warnings for various types of overflows but this
is the first time it has built to completion. 

Comments, thoughts.

--joel

Joel Sherrill wrote:
> Hi,
>
> I am trying to resolve compilation issues with the multilib
> builds of the RTEMS CPUKIT.  On the H8300 port, one of the
> multilibs is "-mh" which gcc documentation describes as:
>
> `-mh'
>     Generate code for the H8/300H.
>
> After fixing another issue, the multilib build now fails with
>
> ../../../lib/include/sys/buf.h:108: warning: integer overflow in 
> expression
> ../../../lib/include/sys/buf.h:108: error: size of array 'b_pages' is 
> too large
>
>
> rtems/cpukit/libnetworking/sys/buf.h has this at line 108
>
>        struct  vm_page *b_pages[btoc(MAXPHYS)];
>
> newlib -- machine/param.h has
>
> #define MAXPHYS         (64 * 1024)     /* max raw I/O transfer size */
>
> Since __INT_MAX__ is 32767, I am assuming that array needs to be MUCH
> smaller.
>
> Any suggestions or thoughts would be appreciated.
>
> --joel

-------------- next part --------------
A non-text attachment was scrubbed...
Name: cpukit-h8300.diff
Type: text/x-patch
Size: 1165 bytes
Desc: not available
URL: <http://lists.rtems.org/pipermail/users/attachments/20060811/a71830e6/attachment-0002.bin>
-------------- next part --------------
A non-text attachment was scrubbed...
Name: machine-param.h.diff
Type: text/x-patch
Size: 520 bytes
Desc: not available
URL: <http://lists.rtems.org/pipermail/users/attachments/20060811/a71830e6/attachment-0003.bin>