From 082a6afc1c1ebffc8a26b7cf47fadb44e7ef5b0c Mon Sep 17 00:00:00 2001
From: jake <jake@FreeBSD.org>
Date: Mon, 29 Jul 2002 00:45:13 +0000
Subject: Add routines needed for high resolution profiling.

---
 sys/conf/files.sparc64             |  1 +
 sys/sparc64/sparc64/prof_machdep.c | 83 ++++++++++++++++++++++++++++++++++++++
 2 files changed, 84 insertions(+)
 create mode 100644 sys/sparc64/sparc64/prof_machdep.c

diff --git a/sys/conf/files.sparc64 b/sys/conf/files.sparc64
index 346aff3..a0758a5 100644
--- a/sys/conf/files.sparc64
+++ b/sys/conf/files.sparc64
@@ -56,6 +56,7 @@ sparc64/sparc64/nexus.c		standard
 sparc64/sparc64/ofw_bus.c	standard
 sparc64/sparc64/ofw_machdep.c	standard
 sparc64/sparc64/pmap.c		standard
+sparc64/sparc64/prof_machdep.c	optional	profiling-routine
 sparc64/sparc64/rwindow.c	standard
 sparc64/sparc64/sparcbus_if.m	standard
 sparc64/sparc64/support.s	standard
diff --git a/sys/sparc64/sparc64/prof_machdep.c b/sys/sparc64/sparc64/prof_machdep.c
new file mode 100644
index 0000000..065a1da
--- /dev/null
+++ b/sys/sparc64/sparc64/prof_machdep.c
@@ -0,0 +1,83 @@
+/*-
+ * Copyright (c) 1996 Bruce D. Evans.
+ * Copyright (c) 2002 by Thomas Moestl <tmm@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.
+ *
+ *	from: src/sys/i386/isa/prof_machdep.c,v 1.16 2000/07/04 11:25:19
+ *
+ * $FreeBSD$
+ */
+
+#ifdef GUPROF
+
+#include <sys/param.h>
+#include <sys/systm.h>
+#include <sys/gmon.h>
+#include <sys/kernel.h>
+#include <sys/sysctl.h>
+
+#include <machine/clock.h>
+#include <machine/profile.h>
+
+int	cputime_bias;
+
+/*
+ * Return the time elapsed since the last call.  The units are machine-
+ * dependent.
+ * XXX: this is not SMP-safe. It should use per-CPU variables; %tick can be
+ * used though.
+ */
+int
+cputime(void)
+{
+	u_long count;
+	int delta;
+	static u_long prev_count;
+
+	count = rd(tick);
+	delta = (int)(count - prev_count);
+	prev_count = count;
+	return (delta);
+}
+
+/*
+ * The start and stop routines need not be here since we turn off profiling
+ * before calling them.  They are here for convenience.
+ */
+void
+startguprof(struct gmonparam *gp)
+{
+
+	gp->profrate = tick_freq;
+	cputime_bias = 0;
+	cputime();
+}
+
+void
+stopguprof(struct gmonparam *gp)
+{
+	/* Nothing to do. */
+}
+
+#endif /* GUPROF */
-- 
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