1.1 --- /dev/null	Thu Jan 01 00:00:00 1970 +0000
     1.2 +++ b/patches/glibc/linuxthreads-2.2.5/linuxthreads-2.2.5-ppc405erratum77.patch	Sat Feb 24 11:00:05 2007 +0000
     1.3 @@ -0,0 +1,34 @@
     1.4 +# see http://bugs.gnu.org/cgi-bin/gnatsweb.pl?cmd=view%20audit-trail&pr=4155
     1.5 +# and http://www.kegel.com/xgcc3/ppc405erratum77.html
     1.6 +# See also matching patch for glibc
     1.7 +
     1.8 +diff -aur glibc-2.2.5.orig/linuxthreads/sysdeps/powerpc/pt-machine.h glibc-2.2.5/linuxthreads/sysdeps/powerpc/pt-machine.h
     1.9 +--- glibc-2.2.5.orig/linuxthreads/sysdeps/powerpc/pt-machine.h	Thu May 17 12:47:46 2001
    1.10 ++++ glibc-2.2.5/linuxthreads/sysdeps/powerpc/pt-machine.h	Tue Jul 23 05:38:24 2002
    1.11 +@@ -41,6 +41,17 @@
    1.12 + #define HAS_COMPARE_AND_SWAP_WITH_RELEASE_SEMANTICS
    1.13 + #define IMPLEMENT_TAS_WITH_CAS
    1.14 + 
    1.15 ++#ifdef __PPC405__
    1.16 ++/* workaround for PPC405 erratum #77 - Mark Hatle, dank.  References:
    1.17 ++   http://www-3.ibm.com/chips/techlib/techlib.nsf/techdocs/89DED00DEBFF54BF87256A8000491BA2/$file/405CR_C_errata_1_2.pdf
    1.18 ++   http://ppc.bkbits.net:8080/linuxppc_2_4_devel/cset@1.489
    1.19 ++   http://www.kegel.com/xgcc3/ppc405erratum77.html
    1.20 ++   FIXME: using dbct instead of sync would be faster  */
    1.21 ++#define __LINUXTHREADS_PPC405_ERR77_SYNC   "sync \n\t"
    1.22 ++#else
    1.23 ++#define __LINUXTHREADS_PPC405_ERR77_SYNC
    1.24 ++#endif
    1.25 ++
    1.26 + PT_EI int
    1.27 + __compare_and_swap (long int *p, long int oldval, long int newval)
    1.28 + {
    1.29 +@@ -50,6 +61,7 @@
    1.30 + 	   "0:    lwarx %0,0,%1 ;"
    1.31 + 	   "      xor. %0,%3,%0;"
    1.32 + 	   "      bne 1f;"
    1.33 ++	   __LINUXTHREADS_PPC405_ERR77_SYNC
    1.34 + 	   "      stwcx. %2,0,%1;"
    1.35 + 	   "      bne- 0b;"
    1.36 + 	   "1:    "
    1.37 +