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-rw-r--r--sys/arm64/include/tls.h61
1 files changed, 61 insertions, 0 deletions
diff --git a/sys/arm64/include/tls.h b/sys/arm64/include/tls.h
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+/*-
+ * Copyright (c) 2005 David Xu <davidxu@freebsd.org>.
+ * Copyright (c) 2014 the FreeBSD Foundation
+ * All rights reserved.
+ *
+ * Portions of this software were developed by Andrew Turner
+ * under sponsorship from the FreeBSD Foundation
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ *
+ * 1. Redistributions of source code must retain the above copyright
+ * notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ * notice, this list of conditions and the following disclaimer in the
+ * documentation and/or other materials provided with the distribution.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
+ * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
+ * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
+ * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
+ * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
+ * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+ * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+ * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+ * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
+ * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ */
+
+#ifdef __arm__
+#include <arm/tls.h>
+#else /* !__arm__ */
+
+#ifndef _MACHINE_TLS_H_
+#define _MACHINE_TLS_H_
+
+#include <sys/_tls_variant_i.h>
+
+#define TLS_DTV_OFFSET 0
+#define TLS_TCB_ALIGN 16
+#define TLS_TP_OFFSET 0
+
+static __inline void
+_tcb_set(struct tcb *tcb)
+{
+ __asm __volatile("msr tpidr_el0, %x0" :: "r" (tcb));
+}
+
+static __inline struct tcb *
+_tcb_get(void)
+{
+ struct tcb *tcb;
+
+ __asm __volatile("mrs %x0, tpidr_el0" : "=r" (tcb));
+ return (tcb);
+}
+
+#endif /* !_MACHINE_TLS_H_ */
+
+#endif /* !__arm__ */