Date: Mon, 7 Apr 2003 00:58:44 -0700 (PDT) From: Peter Wemm <peter@FreeBSD.org> To: Perforce Change Reviews <perforce@freebsd.org> Subject: PERFORCE change 28415 for review Message-ID: <200304070758.h377wia7050691@repoman.freebsd.org>
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http://perforce.freebsd.org/chv.cgi?CH=28415 Change 28415 by peter@peter_overcee on 2003/04/07 00:58:17 Constrain registers for xchgb that have byte halves. eg: %bh, %bl. The upper %rXX do not have an upper byte half. Affected files ... .. //depot/projects/hammer/sys/x86_64/include/endian.h#6 edit Differences ... ==== //depot/projects/hammer/sys/x86_64/include/endian.h#6 (text+ko) ==== @@ -86,7 +86,7 @@ #define __byte_swap_word(x) \ __extension__ ({ register __uint16_t __X = (x); \ - __asm ("xchgb %h0, %b0" : "+q" (__X)); \ + __asm ("xchgb %h0, %b0" : "+Q" (__X)); \ __X; }) static __inline __uint64_t
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