[crosstool-ng] [patch] glibc 2.9 powerpc 860 and glibc sysdeps/powerpc/power3/memset.S: CPU15 "dcbX" errata
Nye Liu
nyet@mrv.com
Sat Mar 28 01:32:00 GMT 2009
looks like same patch from
http://sourceware.org/ml/crossgcc/2008-10/msg00067.html
(glibc/2.7/290-powerpc-8xx-CPU15-errata.patch)
applies to 2.9
Index: patches/glibc/2_9/540-2.7-powerpc-8xx-CPU15-errata.patch
===================================================================
--- patches/glibc/2_9/540-2.7-powerpc-8xx-CPU15-errata.patch (revision 0)
+++ patches/glibc/2_9/540-2.7-powerpc-8xx-CPU15-errata.patch (revision 0)
@@ -0,0 +1,50 @@
+From glibc-2.7 290-powerpc-8xx-CPU15-errata.patch
+
+--- glibc-2.9_orig/sysdeps/powerpc/powerpc32/memset.S 2007-03-26 13:09:07.000000000 -0700
++++ glibc-2.9/sysdeps/powerpc/powerpc32/memset.S 2009-03-27 17:12:09.000000000 -0700
+@@ -112,11 +112,13 @@
+ clrrwi. rALIGN, rLEN, 5
+ mtcrf 0x01, rLEN /* 40th instruction from .align */
+
++#ifndef BROKEN_PPC_8xx_CPU15
+ /* Check if we can use the special case for clearing memory using dcbz.
+ This requires that we know the correct cache line size for this
+ processor. Getting the __cache_line_size may require establishing GOT
+ addressability, so branch out of line to set this up. */
+ beq cr1, L(checklinesize)
++#endif
+
+ /* Store blocks of 32-bytes (256-bits) starting on a 32-byte boundary.
+ Can't assume that rCHR is zero or that the cache line size is either
+@@ -158,6 +160,7 @@
+ add rMEMP, rMEMP, rALIGN
+ b L(medium_tail2) /* 72nd instruction from .align */
+
++#ifndef BROKEN_PPC_8xx_CPU15
+ .align 5
+ nop
+ /* Clear cache lines of memory in 128-byte chunks.
+@@ -191,6 +194,7 @@
+ bdnz L(zloop)
+ beqlr cr5
+ b L(medium_tail2)
++#endif /* ! BROKEN_PPC_8xx_CPU15 */
+
+ .align 5
+ L(small):
+@@ -248,6 +252,7 @@
+ stw rCHR, -8(rMEMP)
+ blr
+
++#ifndef BROKEN_PPC_8xx_CPU15
+ L(checklinesize):
+ #ifdef SHARED
+ mflr rTMP
+@@ -329,6 +334,7 @@
+ L(handletail32):
+ clrrwi. rALIGN, rLEN, 5
+ b L(nondcbz)
++#endif /* ! BROKEN_PPC_8xx_CPU15 */
+
+ END (BP_SYM (memset))
+ libc_hidden_builtin_def (memset)
--
Nye Liu
nliu@mrv.com
(818) 772-6235x248
(818) 772-0576 fax
"Who would be stupid enough to quote a fictitious character?"
-- Don Quixote
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