[PATCH 4/5] libcflat: ppc: add timebase accessor

[ehrhardt@linux.vnet.ibm.com]

Provide a timebase accessor for ppc testcases.

Signed-off-by: Hollis Blanchard <hollisb@us.ibm.com>
Signed-off-by: Christian Ehrhardt <ehrhardt@linux.vnet.ibm.com>

[diffstat]
 config-powerpc-44x.mak          |    3 ++-
 test/lib/powerpc/44x/timebase.S |   28 ++++++++++++++++++++++++++++
 test/lib/powerpc/44x/timebase.h |   25 +++++++++++++++++++++++++
 3 files changed, 55 insertions(+), 1 deletion(-)

[diff]
diff --git a/user/config-powerpc-44x.mak b/user/config-powerpc-44x.mak
--- a/user/config-powerpc-44x.mak
+++ b/user/config-powerpc-44x.mak
@@ -5,7 +5,8 @@
 
 cflatobjs += \
 	test/lib/powerpc/44x/map.o \
-	test/lib/powerpc/44x/tlbwe.o
+	test/lib/powerpc/44x/tlbwe.o \
+	test/lib/powerpc/44x/timebase.o
 
 simpletests += \
 	test/powerpc/44x/tlbsx.bin \
diff --git a/user/test/lib/powerpc/44x/timebase.S b/user/test/lib/powerpc/44x/timebase.S
new file mode 100644
--- /dev/null
+++ b/user/test/lib/powerpc/44x/timebase.S
@@ -0,0 +1,28 @@
+/*
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License, version 2, as
+ * published by the Free Software Foundation.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301, USA.
+ *
+ * Copyright IBM Corp. 2008
+ *
+ * Authors: Hollis Blanchard <hollisb@us.ibm.com>
+ */
+
+/* unsigned long long mftb(void); */
+.global mftb
+mftb:
+	mftbu	r5
+	mftbl 	r4
+	mftbu 	r3
+	cmpw 	r3, r5
+	bne 	mftb
+	blr
diff --git a/user/test/lib/powerpc/44x/timebase.h b/user/test/lib/powerpc/44x/timebase.h
new file mode 100644
--- /dev/null
+++ b/user/test/lib/powerpc/44x/timebase.h
@@ -0,0 +1,25 @@
+/*
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License, version 2, as
+ * published by the Free Software Foundation.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301, USA.
+ *
+ * Copyright IBM Corp. 2008
+ *
+ * Authors: Hollis Blanchard <hollisb@us.ibm.com>
+ */
+
+#ifndef __TIMEBASE_H__
+#define __TIMEBASE_H__
+
+unsigned long long mftb(void);
+
+#endif /* __TIMEBASE_H__ */