On 20/5/23 18:26, Richard Henderson wrote:
Separates the aarch64-specific portion into its own file.
Signed-off-by: Richard Henderson <richard.hender...@linaro.org>
---
host/include/aarch64/host/atomic128-cas.h | 43 ++++++++++++++++++
host/include/generic/host/atomic128-cas.h | 43 ++++++++++++++++++
include/qemu/atomic128.h | 55 +----------------------
3 files changed, 87 insertions(+), 54 deletions(-)
create mode 100644 host/include/aarch64/host/atomic128-cas.h
create mode 100644 host/include/generic/host/atomic128-cas.h
diff --git a/host/include/aarch64/host/atomic128-cas.h
b/host/include/aarch64/host/atomic128-cas.h
new file mode 100644
index 0000000000..1247995419
--- /dev/null
+++ b/host/include/aarch64/host/atomic128-cas.h
@@ -0,0 +1,43 @@
+/*
+ * SPDX-License-Identifier: GPL-2.0-or-later
+ * Compare-and-swap for 128-bit atomic operations, generic version.
"Aarch64 specific"
+ *
+ * Copyright (C) 2018, 2023 Linaro, Ltd.
+ *
+ * See docs/devel/atomics.rst for discussion about the guarantees each
+ * atomic primitive is meant to provide.
+ */
+
+#ifndef AARCH64_ATOMIC128_CAS_H
+#define AARCH64_ATOMIC128_CAS_H
+
+/* Through gcc 10, aarch64 has no support for 128-bit atomics. */
