1 files changed, 108 insertions, 0 deletions
diff --git a/lib/libthr/arch/i386/include/pthread_md.h b/lib/libthr/arch/i386/include/pthread_md.h
new file mode 100644
index 0000000..5c00cf6
--- /dev/null
+++ b/lib/libthr/arch/i386/include/pthread_md.h
@@ -0,0 +1,108 @@
+/*-
+ * Copyright (c) 2002 Daniel Eischen <deischen@freebsd.org>.
+ * 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 AND CONTRIBUTORS ``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 OR CONTRIBUTORS 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 <stddef.h>
+#include <sys/types.h>
+#include <machine/sysarch.h>
+
+#define	CPU_SPINWAIT		__asm __volatile("pause")
+
+#define	DTV_OFFSET		offsetof(struct tcb, tcb_dtv)
+
+/*
+ * Variant II tcb, first two members are required by rtld,
+ * %gs points to the structure.
+ */
+struct tcb {
+	struct tcb		*tcb_self;	/* required by rtld */
+	void			*tcb_dtv;	/* required by rtld */
+	struct pthread		*tcb_thread;
+};
+
+/*
+ * Evaluates to the byte offset of the per-tcb variable name.
+ */
+#define	__tcb_offset(name)	__offsetof(struct tcb, name)
+
+/*
+ * Evaluates to the type of the per-tcb variable name.
+ */
+#define	__tcb_type(name)	__typeof(((struct tcb *)0)->name)
+
+/*
+ * Evaluates to the value of the per-tcb variable name.
+ */
+#define	TCB_GET32(name) ({					\
+	__tcb_type(name) __result;				\
+								\
+	u_int __i;						\
+	__asm __volatile("movl %%gs:%1, %0"			\
+	    : "=r" (__i)					\
+	    : "m" (*(u_int *)(__tcb_offset(name))));		\
+	__result = (__tcb_type(name))__i;			\
+								\
+	__result;						\
+})
+
+/*
+ * The constructors.
+ */
+struct tcb	*_tcb_ctor(struct pthread *, int);
+void		_tcb_dtor(struct tcb *tcb);
+
+/* Called from the thread to set its private data. */
+static __inline void
+_tcb_set(struct tcb *tcb)
+{
+ 	i386_set_gsbase(tcb);
+}
+
+/* Get the current kcb. */
+static __inline struct tcb *
+_tcb_get(void)
+{
+	return (TCB_GET32(tcb_self));
+}
+
+/* Get the current thread. */
+static __inline struct pthread *
+_get_curthread(void)
+{
+	return (TCB_GET32(tcb_thread));
+}
+
+#define HAS__UMTX_OP_ERR	1
+
+#endif