From 380af8096daaabbdfc0d112f02f62814a670e524 Mon Sep 17 00:00:00 2001 From: Richard Henderson Date: Sat, 26 Nov 2011 16:20:48 -0800 Subject: [PATCH] arm: Install __sync libfuncs for Linux. * config/arm/arm.c (arm_init_libfuncs): Call init_sync_libfuncs for Linux. From-SVN: r181755 --- gcc/ChangeLog | 5 +++++ gcc/config/arm/arm.c | 4 ++++ 2 files changed, 9 insertions(+) diff --git a/gcc/ChangeLog b/gcc/ChangeLog index c16f1d8db58..5a6b5d33733 100644 --- a/gcc/ChangeLog +++ b/gcc/ChangeLog @@ -1,3 +1,8 @@ +2011-11-26 Richard Henderson + + * config/arm/arm.c (arm_init_libfuncs): Call init_sync_libfuncs + for Linux. + 2011-11-26 Richard Henderson * optabs.c (expand_atomic_fetch_op): Always return result. diff --git a/gcc/config/arm/arm.c b/gcc/config/arm/arm.c index e3b0b883ec8..ee26c51b0a0 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 (2 * UNITS_PER_WORD); + /* There are no special library functions unless we are using the ARM BPABI. */ if (!TARGET_BPABI) -- 2.30.2