Commit 4d5c34ec authored by Ivan Kokshaysky's avatar Ivan Kokshaysky Committed by Linus Torvalds
Browse files

[PATCH] Alpha: strncpy() fix



As it turned out after recent SCSI changes, strncpy() was broken -
it mixed up the return values from __stxncpy() in registers $24 and $27.

Thanks to Mathieu Chouquet-Stringer for tracking down the problem
and providing an excellent test case.
Signed-off-by: default avatarIvan Kokshaysky <ink@jurassic.park.msu.ru>
Signed-off-by: default avatarLinus Torvalds <torvalds@osdl.org>
parent 454ac778
......@@ -43,8 +43,8 @@ strncpy:
.align 4
$multiword:
subq $24, 1, $2 # clear the final bits in the prev word
or $2, $24, $2
subq $27, 1, $2 # clear the final bits in the prev word
or $2, $27, $2
zapnot $1, $2, $1
subq $18, 1, $18
......@@ -70,8 +70,8 @@ $multiword:
bne $18, 0b
1: ldq_u $1, 0($16) # clear the leading bits in the final word
subq $27, 1, $2
or $2, $27, $2
subq $24, 1, $2
or $2, $24, $2
zap $1, $2, $1
stq_u $1, 0($16)
......
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