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Message-ID: <20240902195614.3169239-1-Mr.Bossman075@gmail.com>
Date: Mon, 2 Sep 2024 15:56:14 -0400
From: Jesse Taube <mr.bossman075@...il.com>
To: musl@...ts.openwall.com
Cc: dalias@...c.org,
Jesse Taube <Mr.Bossman075@...il.com>
Subject: [PATCH] arch/riscv*/atomic_arch.h: Check if atomic is supported
Define a_cas and a_cas_p only if atomic instructions are supported.
Signed-off-by: Jesse Taube <Mr.Bossman075@...il.com>
---
arch/riscv32/atomic_arch.h | 4 ++++
arch/riscv64/atomic_arch.h | 4 ++++
2 files changed, 8 insertions(+)
diff --git a/arch/riscv32/atomic_arch.h b/arch/riscv32/atomic_arch.h
index 4d418f63..331ce46e 100644
--- a/arch/riscv32/atomic_arch.h
+++ b/arch/riscv32/atomic_arch.h
@@ -4,6 +4,8 @@ static inline void a_barrier()
__asm__ __volatile__ ("fence rw,rw" : : : "memory");
}
+#if defined(__riscv_a) || defined(__riscv_atomic)
+
#define a_cas a_cas
static inline int a_cas(volatile int *p, int t, int s)
{
@@ -19,3 +21,5 @@ static inline int a_cas(volatile int *p, int t, int s)
: "memory");
return old;
}
+
+#endif
diff --git a/arch/riscv64/atomic_arch.h b/arch/riscv64/atomic_arch.h
index 0c382588..dac972d2 100644
--- a/arch/riscv64/atomic_arch.h
+++ b/arch/riscv64/atomic_arch.h
@@ -4,6 +4,8 @@ static inline void a_barrier()
__asm__ __volatile__ ("fence rw,rw" : : : "memory");
}
+#if defined(__riscv_a) || defined(__riscv_atomic)
+
#define a_cas a_cas
static inline int a_cas(volatile int *p, int t, int s)
{
@@ -36,3 +38,5 @@ static inline void *a_cas_p(volatile void *p, void *t, void *s)
: "memory");
return old;
}
+
+#endif
--
2.45.2
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