[ECOS] Error when write a uint32 with not aligned pointer.

[wang cui]

Hi, compiler and ARM experts:

I am faceing a problem like below:

Arch of my target is arm7tdmi(lpc2xxx), little endian.

When I use a (cyg_uint32 *)ptr to write a 32bit value, it always error if 
the ptr is not 4-byte aligned.

For example:
ptr = 0x8106409a;
*ptr = 0x00000001;

The result is not like:
0x81064098: 0xXX - shouldn't be modified
0x81064099: 0xXX - shouldn't be modified
0x8106409a: 0x01
0x8106409b: 0x00
0x8106409c: 0x00
0x8106409d: 0x00
but
0x81064098: 0x01
0x81064099: 0x00
0x8106409a: 0x00
0x8106409b: 0x00
0x8106409c: 0xXX - should be modified
0x8106409d: 0xXX - should be modified

It always cause problem when I use tcpip stack.(not cause problem for other 
packages with luck)

So how to solve it? Should I modify some compiling options?

Thanks in advance!

_________________________________________________________________
Ãâ·ÑÏÂÔØ MSN Explorer:   http://explorer.msn.com/lccn  


-- 
Before posting, please read the FAQ: http://ecos.sourceware.org/fom/ecos
and search the list archive: http://ecos.sourceware.org/ml/ecos-discuss