Messages in this thread | | | Date | Fri, 05 Oct 2007 14:35:07 -0500 | From | Timur Tabi <> | Subject | Re: __LITTLE_ENDIAN vs. __LITTLE_ENDIAN_BITFIELD |
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Jan Engelhardt wrote: > On Oct 5 2007 13:27, Timur Tabi wrote: >> What's the difference between __LITTLE_ENDIAN and __LITTLE_ENDIAN_BITFIELD? Can >> someone give me an example when __BIG_ENDIAN and __LITTLE_ENDIAN_BITFIELD would >> both be defined simultaneously? > > standard x86: > ---LSB-- ---2SB-- ---3SB-- ---MSB-- [bytes] LITTLE_ENDIAN > M765432L M765432L M765432L M765432L [bits] ?_BITFIELD > > (Not sure what bitfield type, but I'd guess BIG_ENDIAN_BITFIELD)
Are you sure? I would think that all machines would have the same byte and bit endian, otherwise you'd never be able to put a 16-bit value into a shift register. Your bits will be shifted out like this:
<-- 07 06 05 04 03 02 01 00 15 14 13 12 11 10 09 08
So I think x86 is:
---LSB-- ---2SB-- ---3SB-- ---MSB-- [bytes] LITTLE_ENDIAN L234567M L234567M L234567M L234567M [bits] LITTLE_ENDIAN_BITFIELD
-- Timur Tabi Linux Kernel Developer @ Freescale - To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
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