Dear Wolfgang, Wolfgang Denk wrote: >> nothing magical in offsets actually... we usually have offsets in specs >> not C structures... >> > > Just to name one reason (but a very important one): using a struct > allows for strict type checking by the compiler. If you use address + > offset you will not get any help from the compiler when you for > example read 8 bit from a register that must be accessed as a 32 bit > entity. >
But this works only if we use "memory-style" IO access, if we use read/write accessor functions that info we be lost as all pointers we be silently converted into void*... And using "memory-style" IO access is strongly discouraged in the kernel... BTW, what is the general rule for U-Boot? I can see that most accesses are done "memory-style" but I can see accessor functions used here and there... Regards, Ilya. _______________________________________________ U-Boot mailing list [email protected] http://lists.denx.de/mailman/listinfo/u-boot
