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authorYann E. MORIN" <yann.morin.1998@anciens.enib.fr>2007-02-24 11:00:05 (GMT)
committerYann E. MORIN" <yann.morin.1998@anciens.enib.fr>2007-02-24 11:00:05 (GMT)
commit1906cf93f86d8d66f45f90380a8d3da25c087ee5 (patch)
tree90916c99abe1f1ec26709ee420e6c349eda4670a /patches/glibc/linuxthreads-2.2.5/linuxthreads-2.2.5-ppc405erratum77.patch
parent2609573aede4ce198b3462976725b25eb1637d2e (diff)
Add the full crosstool-NG sources to the new repository of its own.
You might just say: 'Yeah! crosstool-NG's got its own repo!". Unfortunately, that's because the previous repo got damaged beyond repair and I had no backup. That means I'm putting backups in place in the afternoon. That also means we've lost history... :-(
Diffstat (limited to 'patches/glibc/linuxthreads-2.2.5/linuxthreads-2.2.5-ppc405erratum77.patch')
-rw-r--r--patches/glibc/linuxthreads-2.2.5/linuxthreads-2.2.5-ppc405erratum77.patch34
1 files changed, 34 insertions, 0 deletions
diff --git a/patches/glibc/linuxthreads-2.2.5/linuxthreads-2.2.5-ppc405erratum77.patch b/patches/glibc/linuxthreads-2.2.5/linuxthreads-2.2.5-ppc405erratum77.patch
new file mode 100644
index 0000000..48127a1
--- /dev/null
+++ b/patches/glibc/linuxthreads-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: "
+