1 files changed, 106 insertions, 0 deletions
diff --git a/lib/libthr/arch/arm/include/pthread_md.h b/lib/libthr/arch/arm/include/pthread_md.h
new file mode 100644
index 0000000..626d567
--- /dev/null
+++ b/lib/libthr/arch/arm/include/pthread_md.h
@@ -0,0 +1,106 @@
+/*-
+ * Copyright (c) 2005 David Xu <davidxu@freebsd.org>.
+ * All rights reserved.
+ *
+ * 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.
+ *
+ * $FreeBSD$
+ */
+
+/*
+ * Machine-dependent thread prototypes/definitions.
+ */
+#ifndef _PTHREAD_MD_H_
+#define	_PTHREAD_MD_H_
+
+#include <sys/types.h>
+#include <machine/sysarch.h>
+#include <stddef.h>
+#include <errno.h>
+
+static __inline int atomic_cmpset_32(volatile uint32_t *, uint32_t, uint32_t);
+
+#include <sys/umtx.h>
+
+#define	DTV_OFFSET		offsetof(struct tcb, tcb_dtv)
+
+/*
+ * Variant II tcb, first two members are required by rtld.
+ */
+struct tcb {
+	struct tcb              *tcb_self;	/* required by rtld */
+	void                    *tcb_dtv;	/* required by rtld */
+	struct pthread          *tcb_thread;	/* our hook */
+	void			*tcb_spare[1];
+};
+
+/*
+ * The tcb constructors.
+ */
+struct tcb	*_tcb_ctor(struct pthread *, int);
+void		_tcb_dtor(struct tcb *);
+
+/* Called from the thread to set its private data. */
+static __inline void
+_tcb_set(struct tcb *tcb)
+{
+	*((struct tcb **)ARM_TP_ADDRESS) = tcb;
+}
+
+/*
+ * Get the current tcb.
+ */
+static __inline struct tcb *
+_tcb_get(void)
+{
+	return (*((struct tcb **)ARM_TP_ADDRESS));
+}
+
+extern struct pthread *_thr_initial;
+
+static __inline struct pthread *
+_get_curthread(void)
+{
+	if (_thr_initial)
+		return (_tcb_get()->tcb_thread);
+	return (NULL);
+}
+
+extern struct umtx arm_umtx;
+
+static __inline int
+atomic_cmpset_32(volatile uint32_t *dst, uint32_t old, uint32_t newval)
+{						
+	int ret;				
+
+	_umtx_lock(&arm_umtx);
+	arm_umtx.u_owner = (void*)((uint32_t)arm_umtx.u_owner | UMTX_CONTESTED);
+	if (*dst == old) {
+		*dst = newval;
+		ret = 1;
+	} else
+		ret = 0;
+	_umtx_unlock(&arm_umtx);
+	return (ret);
+}
+
+#endif /* _PTHREAD_MD_H_ */