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diff --git a/sys/riscv/include/atomic.h b/sys/riscv/include/atomic.h
--- a/sys/riscv/include/atomic.h
+++ b/sys/riscv/include/atomic.h
@@ -1,5 +1,5 @@
/*-
- * Copyright (c) 2015 Ruslan Bukin <br@bsdpad.com>
+ * Copyright (c) 2015-2024 Ruslan Bukin <br@bsdpad.com>
* All rights reserved.
*
* Portions of this software were developed by SRI International and the
@@ -105,8 +105,6 @@
ATOMIC_CMPSET_ACQ_REL(8);
ATOMIC_FCMPSET_ACQ_REL(8);
-ATOMIC_CMPSET_ACQ_REL(16);
-ATOMIC_FCMPSET_ACQ_REL(16);
#define atomic_cmpset_char atomic_cmpset_8
#define atomic_cmpset_acq_char atomic_cmpset_acq_8
@@ -116,11 +114,40 @@
#define atomic_fcmpset_rel_char atomic_fcmpset_rel_8
#define atomic_cmpset_short atomic_cmpset_16
-#define atomic_cmpset_acq_short atomic_cmpset_acq_16
-#define atomic_cmpset_rel_short atomic_cmpset_rel_16
#define atomic_fcmpset_short atomic_fcmpset_16
+
+ATOMIC_CMPSET_ACQ_REL(16);
+ATOMIC_FCMPSET_ACQ_REL(16);
+
+#define atomic_load_acq_16 atomic_load_acq_16
+static __inline uint16_t
+atomic_load_acq_16(volatile uint16_t *p)
+{
+ uint16_t ret;
+
+ ret = *p;
+
+ fence();
+
+ return (ret);
+}
+
+static __inline void
+atomic_store_rel_16(volatile uint16_t *p, uint16_t val)
+{
+
+ fence();
+
+ *p = val;
+}
+
+#define atomic_cmpset_acq_short atomic_cmpset_acq_16
#define atomic_fcmpset_acq_short atomic_fcmpset_acq_16
+#define atomic_load_acq_short atomic_load_acq_16
+
+#define atomic_cmpset_rel_short atomic_cmpset_rel_16
#define atomic_fcmpset_rel_short atomic_fcmpset_rel_16
+#define atomic_store_rel_short atomic_store_rel_16
static __inline void
atomic_add_32(volatile uint32_t *p, uint32_t val)

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