Add macros for byte/word sized load and store instructions.

1 files changed, 76 insertions, 0 deletions

diff --git a/sys/alpha/include/bwx.h b/sys/alpha/include/bwx.h
new file mode 100644
index 0000000..266534d
--- /dev/null
+++ b/sys/alpha/include/bwx.h
@@ -0,0 +1,76 @@
+/*-
+ * Copyright (c) 1998 Doug Rabson
+ * 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.
+ *
+ *	$Id$
+ */
+
+#ifndef _MACHINE_BWX_H_
+#define	_MACHINE_BWX_H_
+
+static __inline u_int8_t
+ldbu(vm_offset_t va)
+{
+    u_int64_t r;
+    __asm__ __volatile__ ("ldbu %0,%1" : "=r"(r) : "m"(*(u_int8_t*)va));
+    return r;
+}
+
+static __inline u_int16_t
+ldwu(vm_offset_t va)
+{
+    u_int64_t r;
+    __asm__ __volatile__ ("ldwu %0,%1" : "=r"(r) : "m"(*(u_int16_t*)va));
+    return r;
+}
+
+static __inline u_int32_t
+ldl(vm_offset_t va)
+{
+    return *(u_int32_t*) va;
+}
+
+static __inline void
+stb(vm_offset_t va, u_int64_t r)
+{
+    __asm__ __volatile__ ("stb %1,%0" : "=m"(*(u_int8_t*)va) : "r"(r));
+    __asm__ __volatile__ ("mb");
+}
+
+static __inline void
+stw(vm_offset_t va, u_int64_t r)
+{
+    __asm__ __volatile__ ("stw %1,%0" : "=m"(*(u_int16_t*)va) : "r"(r));
+    __asm__ __volatile__ ("mb");
+}
+
+
+static __inline void
+stl(vm_offset_t va, u_int64_t r)
+{
+    __asm__ __volatile__ ("stl %1,%0" : "=m"(*(u_int32_t*)va) : "r"(r));
+    __asm__ __volatile__ ("mb");
+}
+
+#endif /* !_MACHINE_BWX_H_ */