Now that we don't support running 6-CURRENT on i386 class machines (vs. 486 and newer), I'd like to commit this minor optimization. Issues? Concerns? Index: htonl.S =================================================================== RCS file: /home/ncvs/src/lib/libc/i386/net/htonl.S,v retrieving revision 1.9 diff -u -r1.9 htonl.S --- htonl.S 23 Mar 2002 02:06:08 -0000 1.9 +++ htonl.S 16 Oct 2004 17:40:31 -0000 _at__at_ -46,7 +46,11 _at__at_ .set CNAME(htonl),CNAME(__htonl) ENTRY(__htonl) movl 4(%esp),%eax +#ifdef I386_CPU xchgb %al,%ah roll $16,%eax xchgb %al,%ah +#else + bswap %eax +#endif ret Index: ntohl.S =================================================================== RCS file: /home/ncvs/src/lib/libc/i386/net/ntohl.S,v retrieving revision 1.9 diff -u -r1.9 ntohl.S --- ntohl.S 23 Mar 2002 02:06:08 -0000 1.9 +++ ntohl.S 16 Oct 2004 17:38:24 -0000 _at__at_ -46,7 +46,11 _at__at_ .set CNAME(ntohl),CNAME(__ntohl) ENTRY(__ntohl) movl 4(%esp),%eax +#ifdef I386_CPU xchgb %al,%ah roll $16,%eax xchgb %al,%ah +#else + bswap %eax +#endif ret -- -- David (obrien_at_FreeBSD.org)Received on Sat Oct 16 2004 - 15:49:27 UTC
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