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authorRong Xu <xur@google.com>2014-10-13 15:06:37 -0700
committerRong Xu <xur@google.com>2014-10-13 15:06:37 -0700
commitc16bf8984b9f89eeb79abd9a3789151f5c98d02f (patch)
treef4f01e14d95a1d713169e3064537758e1d594197 /gcc-4.9/gcc/configure.ac
parentc5748954561f492fe1c4ea772e0290079af9960b (diff)
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[gcc-4.9] fix for for cortex-a53 erratum 835769
This patch cherry picks r216116 from google/gcc-4_9 branch (which is r216077 and r216079 from upstream gcc-4_9 branch). Tested the built compiler with aarch64 devicde. Change-Id: I75745fe35aae83bc3b64135a2efc7f8ffd9cfb1f
Diffstat (limited to 'gcc-4.9/gcc/configure.ac')
-rw-r--r--gcc-4.9/gcc/configure.ac23
1 files changed, 23 insertions, 0 deletions
diff --git a/gcc-4.9/gcc/configure.ac b/gcc-4.9/gcc/configure.ac
index 309f068e2..7e545d74a 100644
--- a/gcc-4.9/gcc/configure.ac
+++ b/gcc-4.9/gcc/configure.ac
@@ -3562,6 +3562,29 @@ case "$target" in
done
fi
fi
+ # Enable default workaround for AArch64 Cortex-A53 erratum 835769.
+ AC_ARG_ENABLE(fix-cortex-a53-835769,
+ [
+AS_HELP_STRING([--enable-fix-cortex-a53-835769],
+ [enable workaround for AArch64 Cortex-A53 erratum 835769 by default])
+AS_HELP_STRING([--disable-fix-cortex-a53-835769],
+ [disable workaround for AArch64 Cortex-A53 erratum 835769 by default])
+ ],
+ [
+ case $enableval in
+ yes)
+ tm_defines="${tm_defines} TARGET_FIX_ERR_A53_835769_DEFAULT=1"
+ ;;
+ no)
+ ;;
+ *)
+ AC_MSG_ERROR(['$enableval' is an invalid value for --enable-fix-cortex-a53-835769.\
+ Valid choices are 'yes' and 'no'.])
+ ;;
+
+ esac
+ ],
+ [])
;;
# All TARGET_ABI_OSF targets.