> : I find this curious... C99 (6.7.2.1) says "the allocation order of > : bit-fields within a unit (high-order to low-order or low-order to > : high-order) is implementation defined". I can't see any requirement > : for this, so is it just convention that bitfields on big endian systems > : start from the most significant bit, and those on little endian systems > : start from the least significant bit? (My thinking is that endianness > : usually refers to byte ordering and not so much bit ordering.) > > This is a convention that goes back a very long ways. It was this way > in the mid 1980's, and has remained true through today. I've > personally observed this to be the case on many different MIPS > compilers, ARM compilers and SPARC compilers over the years.
I'm fairly sure I've seen targets that use other bitfield orderings, though I can't remember offhand what they were. Paul _______________________________________________ Qemu-devel mailing list Qemu-devel@nongnu.org http://lists.nongnu.org/mailman/listinfo/qemu-devel
