1.1 --- /dev/null Thu Jan 01 00:00:00 1970 +0000
1.2 +++ b/patches/glibc/2.2.5/glibc-2.2.5-ppc405erratum77.patch Tue May 01 16:33:17 2007 +0000
1.3 @@ -0,0 +1,65 @@
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 linuxthreads
1.7 +
1.8 +diff -aur glibc-2.2.5.orig/sysdeps/powerpc/atomicity.h glibc-2.2.5/sysdeps/powerpc/atomicity.h
1.9 +--- glibc-2.2.5.orig/sysdeps/powerpc/atomicity.h Thu Jul 5 21:56:01 2001
1.10 ++++ glibc-2.2.5/sysdeps/powerpc/atomicity.h Tue Jul 23 05:39:38 2002
1.11 +@@ -28,6 +28,17 @@
1.12 + # define __ATOMICITY_INLINE inline
1.13 + #endif
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 __LIBC_PPC405_ERR77_SYNC "sync \n\t"
1.22 ++#else
1.23 ++#define __LIBC_PPC405_ERR77_SYNC
1.24 ++#endif
1.25 ++
1.26 + static __ATOMICITY_INLINE int
1.27 + __attribute__ ((unused))
1.28 + exchange_and_add (volatile uint32_t *mem, int val)
1.29 +@@ -36,6 +47,7 @@
1.30 + __asm__ ("\n\
1.31 + 0: lwarx %0,0,%2 \n\
1.32 + add%I3 %1,%0,%3 \n\
1.33 ++ " __LIBC_PPC405_ERR77_SYNC "\n\
1.34 + stwcx. %1,0,%2 \n\
1.35 + bne- 0b \n\
1.36 + " : "=&b"(result), "=&r"(tmp) : "r" (mem), "Ir"(val) : "cr0", "memory");
1.37 +@@ -50,6 +62,7 @@
1.38 + __asm__ ("\n\
1.39 + 0: lwarx %0,0,%1 \n\
1.40 + add%I2 %0,%0,%2 \n\
1.41 ++ " __LIBC_PPC405_ERR77_SYNC "\n\
1.42 + stwcx. %0,0,%1 \n\
1.43 + bne- 0b \n\
1.44 + " : "=&b"(tmp) : "r" (mem), "Ir"(val) : "cr0", "memory");
1.45 +@@ -65,6 +78,7 @@
1.46 + sub%I2c. %0,%0,%2 \n\
1.47 + cntlzw %0,%0 \n\
1.48 + bne- 1f \n\
1.49 ++ " __LIBC_PPC405_ERR77_SYNC "\n\
1.50 + stwcx. %3,0,%1 \n\
1.51 + bne- 0b \n\
1.52 + 1: \n\
1.53 +@@ -79,6 +93,7 @@
1.54 + long int result;
1.55 + __asm__ ("\n\
1.56 + 0: lwarx %0,0,%1 \n\
1.57 ++ " __LIBC_PPC405_ERR77_SYNC "\n\
1.58 + stwcx. %2,0,%1 \n\
1.59 + bne- 0b \n\
1.60 + " : "=&r"(result) : "r"(p), "r"(newval) : "cr0", "memory");
1.61 +@@ -94,6 +109,7 @@
1.62 + 0: lwarx %0,0,%1 \n\
1.63 + cmpwi %0,0 \n\
1.64 + bne- 1f \n\
1.65 ++ " __LIBC_PPC405_ERR77_SYNC "\n\
1.66 + stwcx. %2,0,%1 \n\
1.67 + bne- 0b \n\
1.68 + 1: \n\