eal: fix clang build with intrinsics forced
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Commit Message
This fixes x86_64-native-linuxapp-clang build with
CONFIG_RTE_FORCE_INTRINSICS=y:
include/generic/rte_atomic.h:218:9: error:
implicit declaration of function '__atomic_exchange_2'
is invalid in C99 [-Werror,-Wimplicit-function-declaration]
include/generic/rte_atomic.h:501:9: error:
implicit declaration of function '__atomic_exchange_4'
is invalid in C99 [-Werror,-Wimplicit-function-declaration]
include/generic/rte_atomic.h:783:9: error:
implicit declaration of function '__atomic_exchange_8'
is invalid in C99 [-Werror,-Wimplicit-function-declaration]
We didn't caught this issue previously on other platforms because
CONFIG_RTE_FORCE_INTRINSICS enabled by default only for armv8.
Fixes: 7bdccb93078e ("eal: fix ARM build with clang")
Cc: stable@dpdk.org
Signed-off-by: Ilya Maximets <i.maximets@samsung.com>
---
lib/librte_eal/common/include/generic/rte_atomic.h | 6 +++---
1 file changed, 3 insertions(+), 3 deletions(-)
Comments
15/01/2019 12:29, Ilya Maximets:
> This fixes x86_64-native-linuxapp-clang build with
> CONFIG_RTE_FORCE_INTRINSICS=y:
>
> include/generic/rte_atomic.h:218:9: error:
> implicit declaration of function '__atomic_exchange_2'
> is invalid in C99 [-Werror,-Wimplicit-function-declaration]
>
> include/generic/rte_atomic.h:501:9: error:
> implicit declaration of function '__atomic_exchange_4'
> is invalid in C99 [-Werror,-Wimplicit-function-declaration]
>
> include/generic/rte_atomic.h:783:9: error:
> implicit declaration of function '__atomic_exchange_8'
> is invalid in C99 [-Werror,-Wimplicit-function-declaration]
>
> We didn't caught this issue previously on other platforms because
> CONFIG_RTE_FORCE_INTRINSICS enabled by default only for armv8.
>
> Fixes: 7bdccb93078e ("eal: fix ARM build with clang")
> Cc: stable@dpdk.org
>
> Signed-off-by: Ilya Maximets <i.maximets@samsung.com>
Applied, thanks
@@ -212,7 +212,7 @@ rte_atomic16_exchange(volatile uint16_t *dst, uint16_t val);
static inline uint16_t
rte_atomic16_exchange(volatile uint16_t *dst, uint16_t val)
{
-#if defined(RTE_ARCH_ARM64) && defined(__clang__)
+#if defined(__clang__)
return __atomic_exchange_n(dst, val, __ATOMIC_SEQ_CST);
#else
return __atomic_exchange_2(dst, val, __ATOMIC_SEQ_CST);
@@ -495,7 +495,7 @@ rte_atomic32_exchange(volatile uint32_t *dst, uint32_t val);
static inline uint32_t
rte_atomic32_exchange(volatile uint32_t *dst, uint32_t val)
{
-#if defined(RTE_ARCH_ARM64) && defined(__clang__)
+#if defined(__clang__)
return __atomic_exchange_n(dst, val, __ATOMIC_SEQ_CST);
#else
return __atomic_exchange_4(dst, val, __ATOMIC_SEQ_CST);
@@ -777,7 +777,7 @@ rte_atomic64_exchange(volatile uint64_t *dst, uint64_t val);
static inline uint64_t
rte_atomic64_exchange(volatile uint64_t *dst, uint64_t val)
{
-#if defined(RTE_ARCH_ARM64) && defined(__clang__)
+#if defined(__clang__)
return __atomic_exchange_n(dst, val, __ATOMIC_SEQ_CST);
#else
return __atomic_exchange_8(dst, val, __ATOMIC_SEQ_CST);