Re: About that Alpha kernel bug mentioned in beta3 errata
tags 237884 pending
quit
On Mon, Apr 05, 2004 at 06:41:07PM +0200, Bjoern Brill wrote:
>
> Result: CD drive is properly detected, symlink in /dev/cdroms looks alright.
> (Should it matter: this is on a EV5 machine.)
Thank you very much.
The following patch from glibc should fix the problem.
--
Debian GNU/Linux 3.0 is out! ( http://www.debian.org/ )
Email: Herbert Xu ~{PmV>HI~} <herbert@gondor.apana.org.au>
Home Page: http://gondor.apana.org.au/~herbert/
PGP Key: http://gondor.apana.org.au/~herbert/pubkey.txt
Index: arch/alpha/lib/stxncpy.S
===================================================================
RCS file: /home/gondolin/herbert/src/CVS/debian/kernel-source-2.4/arch/alpha/lib/stxncpy.S,v
retrieving revision 1.4
diff -u -r1.4 stxncpy.S
--- a/arch/alpha/lib/stxncpy.S 3 Sep 2003 10:26:49 -0000 1.4
+++ b/arch/alpha/lib/stxncpy.S 9 Apr 2004 10:23:30 -0000
@@ -313,9 +313,9 @@
lda t2, -1 # e0 : for creating masks later
beq t12, $u_head # .. e1 :
- extql t2, a1, t2 # e0 :
+ mskqh t2, t5, t2 # e0 : begin src validity mask
cmpbge zero, t1, t8 # .. e1 : is there a zero?
- andnot t2, t6, t12 # e0 : dest mask for a single word copy
+ extql t2, a1, t2 # e0 :
or t8, t10, t5 # .. e1 : test for end-of-count too
cmpbge zero, t2, t3 # e0 :
cmoveq a2, t5, t8 # .. e1 :
@@ -330,14 +330,14 @@
ldq_u t0, 0(a0) # e0 :
negq t8, t6 # .. e1 : build bitmask of bytes <= zero
mskqh t1, t4, t1 # e0 :
- and t6, t8, t2 # .. e1 :
- subq t2, 1, t6 # e0 :
- or t6, t2, t8 # e1 :
+ and t6, t8, t12 # .. e1 :
+ subq t12, 1, t6 # e0 :
+ or t6, t12, t8 # e1 :
- zapnot t12, t8, t12 # e0 : prepare source word; mirror changes
+ zapnot t2, t8, t2 # e0 : prepare source word; mirror changes
zapnot t1, t8, t1 # .. e1 : to source validity mask
- andnot t0, t12, t0 # e0 : zero place for source to reside
+ andnot t0, t2, t0 # e0 : zero place for source to reside
or t0, t1, t0 # e1 : and put it there
stq_u t0, 0(a0) # e0 :
ret (t9) # .. e1 :
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