[rtems-libbsd commit] atomic.h: Add atomic_load_32()
Sebastian Huber
sebh at rtems.org
Mon Feb 11 08:37:54 UTC 2019
Module: rtems-libbsd
Branch: 5-freebsd-12
Commit: d7504f837286619ae5a7d9dea2c36d739b420875
Changeset: http://git.rtems.org/rtems-libbsd/commit/?id=d7504f837286619ae5a7d9dea2c36d739b420875
Author: Sebastian Huber <sebastian.huber at embedded-brains.de>
Date: Tue Feb 5 14:15:47 2019 +0100
atomic.h: Add atomic_load_32()
---
rtemsbsd/include/machine/atomic.h | 21 +++++++++++++++++++++
1 file changed, 21 insertions(+)
diff --git a/rtemsbsd/include/machine/atomic.h b/rtemsbsd/include/machine/atomic.h
index 052df5a..eb9e3cc 100644
--- a/rtemsbsd/include/machine/atomic.h
+++ b/rtemsbsd/include/machine/atomic.h
@@ -997,6 +997,27 @@ atomic_readandclear_32(volatile uint32_t *p)
}
static inline uint32_t
+atomic_load_32(volatile uint32_t *p)
+{
+ uint32_t tmp;
+
+#if defined(_RTEMS_BSD_MACHINE_ATOMIC_USE_ATOMIC)
+ std::atomic_int *q =
+ reinterpret_cast<std::atomic_uint_least32_t *>(const_cast<uint32_t *>(p));
+
+ tmp = q->load(std::memory_order_relaxed);
+#elif defined(_RTEMS_BSD_MACHINE_ATOMIC_USE_STDATOMIC)
+ atomic_uint_least32_t *q = (atomic_uint_least32_t *)RTEMS_DEVOLATILE(uint32_t *, p);
+
+ tmp = atomic_load_explicit(q, memory_order_relaxed);
+#else
+ tmp = *p;
+#endif
+
+ return (tmp);
+}
+
+static inline uint32_t
atomic_load_acq_32(volatile uint32_t *p)
{
uint32_t tmp;
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