Cleanup: Re-organise source dir

[userspace-rcu.git] / include / urcu / arch / s390.h

diff --git a/include/urcu/arch/s390.h b/include/urcu/arch/s390.h
new file mode 100644 (file)
index 0000000..67461b4
--- /dev/null
+++ b/include/urcu/arch/s390.h
@@ -0,0 +1,71 @@
+#ifndef _URCU_ARCH_S390_H
+#define _URCU_ARCH_S390_H
+
+/*
+ * Trivial definitions for the S390 architecture based on information from the
+ * Principles of Operation "CPU Serialization" (5-91), "BRANCH ON CONDITION"
+ * (7-25) and "STORE CLOCK" (7-169).
+ *
+ * Copyright (c) 2009 Novell, Inc.
+ * Author: Jan Blunck <jblunck@suse.de>
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a copy
+ * of this software and associated documentation files (the "Software"), to
+ * deal in the Software without restriction, including without limitation the
+ * rights to use, copy, modify, merge, publish, distribute, sublicense, and/or
+ * sell copies of the Software, and to permit persons to whom the Software is
+ * furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be included in
+ * all copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+ * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+ * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
+ * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS
+ * IN THE SOFTWARE.
+ */
+
+#include <urcu/compiler.h>
+#include <urcu/config.h>
+#include <urcu/syscall-compat.h>
+#include <stdint.h>
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+#define CAA_CACHE_LINE_SIZE    128
+
+#define cmm_mb()    __asm__ __volatile__("bcr 15,0" : : : "memory")
+
+#define HAS_CAA_GET_CYCLES
+
+typedef uint64_t caa_cycles_t;
+
+static inline caa_cycles_t caa_get_cycles (void)
+{
+       caa_cycles_t cycles;
+
+       __asm__ __volatile__("stck %0" : "=m" (cycles) : : "cc", "memory" );
+
+       return cycles;
+}
+
+/*
+ * On Linux, define the membarrier system call number if not yet available in
+ * the system headers.
+ */
+#if (defined(__linux__) && !defined(__NR_membarrier))
+#define __NR_membarrier                356
+#endif
+
+#ifdef __cplusplus
+}
+#endif
+
+#include <urcu/arch/generic.h>
+
+#endif /* _URCU_ARCH_S390_H */