aboutsummaryrefslogtreecommitdiffstats
path: root/packages/glibc/glibc-2.2.5/glibc-2.2.5-ppc405erratum77.patch
diff options
context:
space:
mode:
Diffstat (limited to 'packages/glibc/glibc-2.2.5/glibc-2.2.5-ppc405erratum77.patch')
-rw-r--r--packages/glibc/glibc-2.2.5/glibc-2.2.5-ppc405erratum77.patch65
1 files changed, 65 insertions, 0 deletions
diff --git a/packages/glibc/glibc-2.2.5/glibc-2.2.5-ppc405erratum77.patch b/packages/glibc/glibc-2.2.5/glibc-2.2.5-ppc405erratum77.patch
index e69de29bb2..7a27bacea1 100644
--- a/packages/glibc/glibc-2.2.5/glibc-2.2.5-ppc405erratum77.patch
+++ b/packages/glibc/glibc-2.2.5/glibc-2.2.5-ppc405erratum77.patch
@@ -0,0 +1,65 @@
+
+#
+# Patch managed by http://www.mn-logistik.de/unsupported/pxa250/patcher
+#
+
+--- glibc-2.2.5/sysdeps/powerpc/atomicity.h~glibc-2.2.5-ppc405erratum77.patch 2004-09-03 19:00:33.000000000 -0500
++++ glibc-2.2.5/sysdeps/powerpc/atomicity.h 2004-09-03 19:00:38.000000000 -0500
+@@ -28,6 +28,17 @@
+ # define __ATOMICITY_INLINE inline
+ #endif
+
++#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 __LIBC_PPC405_ERR77_SYNC "sync \n\t"
++#else
++#define __LIBC_PPC405_ERR77_SYNC
++#endif
++
+ static __ATOMICITY_INLINE int
+ __attribute__ ((unused))
+ exchange_and_add (volatile uint32_t *mem, int val)
+@@ -36,6 +47,7 @@
+ __asm__ ("\n\
+ 0: lwarx %0,0,%2 \n\
+ add%I3 %1,%0,%3 \n\
++ " __LIBC_PPC405_ERR77_SYNC "\n\
+ stwcx. %1,0,%2 \n\
+ bne- 0b \n\
+ " : "=&b"(result), "=&r"(tmp) : "r" (mem), "Ir"(val) : "cr0", "memory");
+@@ -50,6 +62,7 @@
+ __asm__ ("\n\
+ 0: lwarx %0,0,%1 \n\
+ add%I2 %0,%0,%2 \n\
++ " __LIBC_PPC405_ERR77_SYNC "\n\
+ stwcx. %0,0,%1 \n\
+ bne- 0b \n\
+ " : "=&b"(tmp) : "r" (mem), "Ir"(val) : "cr0", "memory");
+@@ -65,6 +78,7 @@
+ sub%I2c. %0,%0,%2 \n\
+ cntlzw %0,%0 \n\
+ bne- 1f \n\
++ " __LIBC_PPC405_ERR77_SYNC "\n\
+ stwcx. %3,0,%1 \n\
+ bne- 0b \n\
+ 1: \n\
+@@ -79,6 +93,7 @@
+ long int result;
+ __asm__ ("\n\
+ 0: lwarx %0,0,%1 \n\
++ " __LIBC_PPC405_ERR77_SYNC "\n\
+ stwcx. %2,0,%1 \n\
+ bne- 0b \n\
+ " : "=&r"(result) : "r"(p), "r"(newval) : "cr0", "memory");
+@@ -94,6 +109,7 @@
+ 0: lwarx %0,0,%1 \n\
+ cmpwi %0,0 \n\
+ bne- 1f \n\
++ " __LIBC_PPC405_ERR77_SYNC "\n\
+ stwcx. %2,0,%1 \n\
+ bne- 0b \n\
+ 1: \n\