From 875fbdbb49cae497c654c9f9f27d97de78225b30 Mon Sep 17 00:00:00 2001
From: Joel Sherrill <joel.sherrill@OARcorp.com>
Date: Mon, 22 Nov 1999 13:48:10 +0000
Subject: Added files missed by previous merger of SH-2 port.

---
 c/src/lib/libcpu/sh/sh7032/delay/Makefile.in | 70 ++++++++++++++++++++++++++++
 c/src/lib/libcpu/sh/sh7032/delay/delay.c     | 53 +++++++++++++++++++++
 2 files changed, 123 insertions(+)
 create mode 100644 c/src/lib/libcpu/sh/sh7032/delay/Makefile.in
 create mode 100644 c/src/lib/libcpu/sh/sh7032/delay/delay.c

(limited to 'c/src/lib/libcpu/sh/sh7032/delay')

diff --git a/c/src/lib/libcpu/sh/sh7032/delay/Makefile.in b/c/src/lib/libcpu/sh/sh7032/delay/Makefile.in
new file mode 100644
index 0000000000..740015b9f7
--- /dev/null
+++ b/c/src/lib/libcpu/sh/sh7032/delay/Makefile.in
@@ -0,0 +1,70 @@
+#
+#  $Id$
+#
+
+@SET_MAKE@
+srcdir = @srcdir@
+top_srcdir = @top_srcdir@
+top_builddir = ../../..
+subdir = sh/sh7032/delay
+
+RTEMS_ROOT = @RTEMS_ROOT@
+PROJECT_ROOT = @PROJECT_ROOT@
+
+VPATH = @srcdir@
+
+PGM = ${ARCH}/delay.rel
+
+# C source names, if any, go here -- minus the .c
+C_PIECES = delay
+C_FILES = $(C_PIECES:%=%.c)
+C_O_FILES = $(C_PIECES:%=${ARCH}/%.o)
+
+H_FILES =
+
+# Assembly source names, if any, go here -- minus the .S
+S_PIECES =
+S_FILES = $(S_PIECES:%=%.S)
+S_O_FILES = $(S_FILES:%.S=${ARCH}/%.o)
+
+SRCS = $(DOCS) $(C_FILES) $(H_FILES)
+OBJS = $(C_O_FILES)
+
+include $(RTEMS_ROOT)/make/custom/@RTEMS_BSP@.cfg
+include $(RTEMS_ROOT)/make/leaf.cfg
+
+INSTALL_CHANGE = @INSTALL_CHANGE@
+
+#
+# (OPTIONAL) Add local stuff here using +=
+#
+
+DEFINES +=
+CPPFLAGS +=
+CFLAGS +=
+
+LD_PATHS +=
+LD_LIBS +=
+LDFLAGS +=
+
+#
+# Add your list of files to delete here.  The config files
+#  already know how to delete some stuff, so you may want
+#  to just run 'make clean' first to see what gets missed.
+#  'make clobber' already includes 'make clean'
+#
+
+CLEAN_ADDITIONS +=
+CLOBBER_ADDITIONS +=
+
+${PGM}: ${SRCS} ${OBJS}
+	$(make-rel)
+
+all: ${ARCH} $(SRCS) $(PGM)
+
+# the .rel file built here will be put into libbsp.a by ../wrapup/Makefile
+install: all
+
+Makefile: $(srcdir)/Makefile.in $(top_builddir)/config.status
+	cd $(top_builddir) \
+	 && CONFIG_FILES=$(subdir)/$@ CONFIG_HEADERS= $(SHELL) ./config.status
diff --git a/c/src/lib/libcpu/sh/sh7032/delay/delay.c b/c/src/lib/libcpu/sh/sh7032/delay/delay.c
new file mode 100644
index 0000000000..83f48df853
--- /dev/null
+++ b/c/src/lib/libcpu/sh/sh7032/delay/delay.c
@@ -0,0 +1,53 @@
+/*  
+ *  This routine is a simple spin delay
+ *
+ *  Author: Ralf Corsepius (corsepiu@faw.uni-ulm.de)
+ *
+ *  COPYRIGHT (c) 1999, Ralf Corsepius, Ulm, Germany
+ *
+ *  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.
+ *
+ *
+ *  COPYRIGHT (c) 1989-1999.
+ *  On-Line Applications Research Corporation (OAR).
+ *  Copyright assigned to U.S. Government, 1994.
+ *
+ *  The license and distribution terms for this file may be
+ *  found in the file LICENSE in this distribution or at
+ *  http://www.OARcorp.com/rtems/license.html.
+ *
+ *  $Id$
+ */
+
+
+#include <rtems.h>
+
+/*
+ *  Simple spin delay in microsecond units for device drivers.
+ *  This is very dependent on the clock speed of the target.
+ *
+ *  Since we don't have a real time clock, this is a very rough
+ *  approximation, assuming that each cycle of the delay loop takes
+ *  approx. 4 machine cycles.
+ *
+ *  e.g.: clicks_per_second = 20MHz
+ *        => 5e-8 secs per instruction
+ *        => 4 * 5e-8 secs per delay loop
+ */
+
+void CPU_delay( unsigned32 microseconds )
+{ 
+  register unsigned32 clicks_per_usec = 
+    rtems_cpu_configuration_get_clicks_per_second() / 1000000 ;
+  register unsigned32 _delay = 
+    (microseconds) * (clicks_per_usec);
+  asm volatile (
+"0:	add  #-4,%0\n
+	nop\n
+	cmp/pl %0\n
+	bt 0b
+	nop"
+     :: "r" (_delay) );
+}
-- 
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