diff options
Diffstat (limited to 'recipes/glibc/glibc-2.2.5/linuxthreads-2.2.5-ppc405erratum77.patch')
| -rw-r--r-- | recipes/glibc/glibc-2.2.5/linuxthreads-2.2.5-ppc405erratum77.patch | 34 |
1 files changed, 34 insertions, 0 deletions
diff --git a/recipes/glibc/glibc-2.2.5/linuxthreads-2.2.5-ppc405erratum77.patch b/recipes/glibc/glibc-2.2.5/linuxthreads-2.2.5-ppc405erratum77.patch new file mode 100644 index 0000000000..48127a1281 --- /dev/null +++ b/recipes/glibc/glibc-2.2.5/linuxthreads-2.2.5-ppc405erratum77.patch @@ -0,0 +1,34 @@ +# see http://bugs.gnu.org/cgi-bin/gnatsweb.pl?cmd=view%20audit-trail&pr=4155 +# and http://www.kegel.com/xgcc3/ppc405erratum77.html +# See also matching patch for glibc + +diff -aur glibc-2.2.5.orig/linuxthreads/sysdeps/powerpc/pt-machine.h glibc-2.2.5/linuxthreads/sysdeps/powerpc/pt-machine.h +--- glibc-2.2.5.orig/linuxthreads/sysdeps/powerpc/pt-machine.h Thu May 17 12:47:46 2001 ++++ glibc-2.2.5/linuxthreads/sysdeps/powerpc/pt-machine.h Tue Jul 23 05:38:24 2002 +@@ -41,6 +41,17 @@ + #define HAS_COMPARE_AND_SWAP_WITH_RELEASE_SEMANTICS + #define IMPLEMENT_TAS_WITH_CAS + ++#ifdef __PPC405__ ++/* workaround for PPC405 erratum #77 - Mark Hatle, dank. References: ++ http://www-3.ibm.com/chips/techlib/techlib.nsf/techdocs/89DED00DEBFF54BF87256A8000491BA2/$file/405CR_C_errata_1_2.pdf ++ http://ppc.bkbits.net:8080/linuxppc_2_4_devel/cset@1.489 ++ http://www.kegel.com/xgcc3/ppc405erratum77.html ++ FIXME: using dbct instead of sync would be faster */ ++#define __LINUXTHREADS_PPC405_ERR77_SYNC "sync \n\t" ++#else ++#define __LINUXTHREADS_PPC405_ERR77_SYNC ++#endif ++ + PT_EI int + __compare_and_swap (long int *p, long int oldval, long int newval) + { +@@ -50,6 +61,7 @@ + "0: lwarx %0,0,%1 ;" + " xor. %0,%3,%0;" + " bne 1f;" ++ __LINUXTHREADS_PPC405_ERR77_SYNC + " stwcx. %2,0,%1;" + " bne- 0b;" + "1: " + |