diff options
Diffstat (limited to 'patches/glibc/2.2.5/glibc-2.2.5-ppc405erratum77.patch')
| -rw-r--r-- | patches/glibc/2.2.5/glibc-2.2.5-ppc405erratum77.patch | 65 |
1 files changed, 65 insertions, 0 deletions
diff --git a/patches/glibc/2.2.5/glibc-2.2.5-ppc405erratum77.patch b/patches/glibc/2.2.5/glibc-2.2.5-ppc405erratum77.patch new file mode 100644 index 0000000..2267f85 --- /dev/null +++ b/patches/glibc/2.2.5/glibc-2.2.5-ppc405erratum77.patch @@ -0,0 +1,65 @@ +# 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 linuxthreads + +diff -aur glibc-2.2.5.orig/sysdeps/powerpc/atomicity.h glibc-2.2.5/sysdeps/powerpc/atomicity.h +--- glibc-2.2.5.orig/sysdeps/powerpc/atomicity.h Thu Jul 5 21:56:01 2001 ++++ glibc-2.2.5/sysdeps/powerpc/atomicity.h Tue Jul 23 05:39:38 2002 +@@ -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\ |