CRIS v10: Remove duplicated folding of carry from lib/checksumcopy.S, it is not needed.
Also, remove useless CVS id tag.
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@ -1,4 +1,4 @@
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/* $Id: checksumcopy.S,v 1.1 2001/12/17 13:59:27 bjornw Exp $
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/*
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* A fast checksum+copy routine using movem
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* A fast checksum+copy routine using movem
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* Copyright (c) 1998, 2001 Axis Communications AB
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* Copyright (c) 1998, 2001 Axis Communications AB
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*
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*
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@ -67,8 +67,6 @@ _mloop: movem [$r10+],$r9 ; read 10 longwords
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ax
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ax
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addq 0,$r13
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addq 0,$r13
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ax ; do it again, since we might have generated a carry
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addq 0,$r13
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subq 10*4,$r12
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subq 10*4,$r12
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bge _mloop
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bge _mloop
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@ -91,10 +89,6 @@ _word_loop:
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lsrq 16,$r9 ; r0 = checksum >> 16
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lsrq 16,$r9 ; r0 = checksum >> 16
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and.d 0xffff,$r13 ; checksum = checksum & 0xffff
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and.d 0xffff,$r13 ; checksum = checksum & 0xffff
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add.d $r9,$r13 ; checksum += r0
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add.d $r9,$r13 ; checksum += r0
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move.d $r13,$r9 ; do the same again, maybe we got a carry last add
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lsrq 16,$r9
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and.d 0xffff,$r13
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add.d $r9,$r13
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_no_fold:
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_no_fold:
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cmpq 2,$r12
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cmpq 2,$r12
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