Martin Pitt [2015-02-18 15:06 +0100]: > I couldn't quickly find a reference for EFI variables (which is the > main thing we are using this for), and I don't have/know a big-endian > EFI machine to check this on.
I had a look into the official spec http://www.uefi.org/sites/default/files/resources/UEFI_2.4.pdf While it defines the encoding of strings in several places, like in "28.2.6 Strings" (page 1542), it only says that it uses the UCS-2 subset of UTF-16. UCS-2 is defined to be big-endian only, but wikipedia says that in practice a lot of implementations use little-endian. "little-endian" and "big-endian" have no useful hits, and "UTF-16LE" and "UTF-16BE" have no hits in the document. On my x86_64 laptop it quite clearly uses little-endian, and the variables don't seem to have a BOM marker at the start to indicate endianness. > So if EFI variables are defined to be UTF16LE always, your patch is > correct. So meh -- is this defined at all? Martin -- Martin Pitt | http://www.piware.de Ubuntu Developer (www.ubuntu.com) | Debian Developer (www.debian.org)
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