[PATCH 1/4] arm: Install __sync libfuncs for Linux.

[Richard Henderson]

Cc: Richard Earnshaw <richard.earnshaw@arm.com>
Cc: Ramana Radhakrishnan <ramana.radhakrishnan@arm.com>
---
 gcc/config/arm/arm.c |    4 ++++
 1 files changed, 4 insertions(+), 0 deletions(-)

diff --git a/gcc/config/arm/arm.c b/gcc/config/arm/arm.c
index 6ef6f62..abf8ce1 100644
--- a/gcc/config/arm/arm.c
+++ b/gcc/config/arm/arm.c
@@ -1096,6 +1096,10 @@ arm_set_fixed_conv_libfunc (convert_optab optable, enum machine_mode to,
 static void
 arm_init_libfuncs (void)
 {
+  /* For Linux, we have access to kernel support for atomic operations.  */
+  if (arm_abi == ARM_ABI_AAPCS_LINUX)
+    init_sync_libfuncs (8);
+
   /* There are no special library functions unless we are using the
      ARM BPABI.  */
   if (!TARGET_BPABI)
-- 
1.7.6.4