RE: [U-Boot-Users] struct NS16550 {...} __attribute__ ((packed)) at ns16550.h

If this is really true, then there is either bug in GCC or in the code. If I code a 32 bit access the compiler must not use any other accesses.

If you use __attribute__ ((packed)), you are telling the compiler you have an unaligned data structure (e.g. longs not by-4 aligned). Therefore, GCC will always reassemble the 32-bit value from byte accesses.

Art Shipkowski Videon Central Software Engineer (814)235-1111 x307 art@videon-central.com