Import and fix old code

1 files changed, 21 insertions, 0 deletions

diff --git a/include/musl/sys/membarrier.h b/include/musl/sys/membarrier.h
new file mode 100644
index 0000000..11193ed
--- /dev/null
+++ b/include/musl/sys/membarrier.h
@@ -0,0 +1,21 @@
+#ifndef _SYS_MEMBARRIER_H
+#define _SYS_MEMBARRIER_H
+
+#define MEMBARRIER_CMD_QUERY 0
+#define MEMBARRIER_CMD_GLOBAL 1
+#define MEMBARRIER_CMD_GLOBAL_EXPEDITED 2
+#define MEMBARRIER_CMD_REGISTER_GLOBAL_EXPEDITED 4
+#define MEMBARRIER_CMD_PRIVATE_EXPEDITED 8
+#define MEMBARRIER_CMD_REGISTER_PRIVATE_EXPEDITED 16
+#define MEMBARRIER_CMD_PRIVATE_EXPEDITED_SYNC_CORE 32
+#define MEMBARRIER_CMD_REGISTER_PRIVATE_EXPEDITED_SYNC_CORE 64
+#define MEMBARRIER_CMD_PRIVATE_EXPEDITED_RSEQ 128
+#define MEMBARRIER_CMD_REGISTER_PRIVATE_EXPEDITED_RSEQ 256
+
+#define MEMBARRIER_CMD_SHARED MEMBARRIER_CMD_GLOBAL
+
+#define MEMBARRIER_CMD_FLAG_CPU 1
+
+int membarrier(int, int);
+
+#endif