an amd64 arch support.

hacked by art@ from netbsd sources and then later debugged
by me into the shape where it can host itself.
no bootloader yet as needs redoing from the
recent advanced i386 sources (anyone? ;)

1 files changed, 96 insertions, 0 deletions

diff --git a/sys/arch/amd64/include/atomic.h b/sys/arch/amd64/include/atomic.h
new file mode 100644
index 00000000000..027415b18c2
--- /dev/null
+++ b/sys/arch/amd64/include/atomic.h
@@ -0,0 +1,96 @@
+/*	$OpenBSD: atomic.h,v 1.1 2004/01/28 01:39:39 mickey Exp $	*/
+/*	$NetBSD: atomic.h,v 1.1 2003/04/26 18:39:37 fvdl Exp $	*/
+
+/*
+ * Copyright 2002 (c) Wasabi Systems, Inc.
+ * All rights reserved.
+ *
+ * Written by Frank van der Linden for Wasabi Systems, Inc.
+ *
+ * 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.
+ * 3. All advertising materials mentioning features or use of this software
+ *    must display the following acknowledgement:
+ *      This product includes software developed for the NetBSD Project by
+ *      Wasabi Systems, Inc.
+ * 4. The name of Wasabi Systems, Inc. may not be used to endorse
+ *    or promote products derived from this software without specific prior
+ *    written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY WASABI SYSTEMS, INC. ``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 WASABI SYSTEMS, INC
+ * 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.
+ */
+
+#ifndef _ATOMIC_H
+#define _ATOMIC_H
+
+#ifndef _LOCORE
+
+static __inline u_int64_t
+x86_atomic_testset_u64(volatile u_int64_t *ptr, u_int64_t val) {
+    __asm__ volatile ("xchgq %0,(%2)" :"=r" (val):"0" (val),"r" (ptr));
+    return val;
+}
+
+static __inline u_int32_t
+x86_atomic_testset_u32(volatile u_int32_t *ptr, u_int32_t val) {
+    __asm__ volatile ("xchgl %0,(%2)" :"=r" (val):"0" (val),"r" (ptr));
+    return val;
+}
+
+
+
+static __inline int32_t
+x86_atomic_testset_i32(volatile int32_t *ptr, int32_t val) {
+    __asm__ volatile ("xchgl %0,(%2)" :"=r" (val):"0" (val),"r" (ptr));
+    return val;
+}
+
+
+
+static __inline void
+x86_atomic_setbits_u32(volatile u_int32_t *ptr, u_int32_t bits) {
+    __asm __volatile("lock ; orl %1,%0" :  "=m" (*ptr) : "ir" (bits));
+}
+
+static __inline void
+x86_atomic_clearbits_u32(volatile u_int32_t *ptr, u_int32_t bits) {
+    __asm __volatile("lock ; andl %1,%0" :  "=m" (*ptr) : "ir" (~bits));
+}
+
+
+
+static __inline void
+x86_atomic_setbits_u64(volatile u_int64_t *ptr, u_int64_t bits) {
+    __asm __volatile("lock ; orq %1,%0" :  "=m" (*ptr) : "ir" (~bits));
+}
+
+static __inline void
+x86_atomic_clearbits_u64(volatile u_int64_t *ptr, u_int64_t bits) {
+    __asm __volatile("lock ; andq %1,%0" :  "=m" (*ptr) : "ir" (~bits));
+}
+
+#define x86_atomic_testset_ul	x86_atomic_testset_u32
+#define x86_atomic_testset_i	x86_atomic_testset_i32
+#define x86_atomic_setbits_l	x86_atomic_setbits_u32
+#define x86_atomic_setbits_ul	x86_atomic_setbits_u32
+#define x86_atomic_clearbits_l	x86_atomic_clearbits_u32
+#define x86_atomic_clearbits_ul	x86_atomic_clearbits_u32
+
+#endif
+#endif