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-rw-r--r--c/src/lib/libbsp/sh/gensh1/clock/delay.c51
1 files changed, 0 insertions, 51 deletions
diff --git a/c/src/lib/libbsp/sh/gensh1/clock/delay.c b/c/src/lib/libbsp/sh/gensh1/clock/delay.c
deleted file mode 100644
index 085771f777..0000000000
--- a/c/src/lib/libbsp/sh/gensh1/clock/delay.c
+++ /dev/null
@@ -1,51 +0,0 @@
-/*
- * 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).
- *
- * The license and distribution terms for this file may be
- * found in the file LICENSE in this distribution or at
- * http://www.rtems.org/license/LICENSE.
- */
-
-
-#include <rtems.h>
-
-extern uint32_t bsp_clicks_per_second;
-
-/*
- * 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( uint32_t microseconds )
-{
- register uint32_t clicks_per_usec = bsp_clicks_per_second / 1000000;
- register uint32_t _delay = (microseconds) * (clicks_per_usec);
-
- __asm__ volatile (
-"0: add #-4,%0\n\
- nop\n\
- cmp/pl %0\n\
- bt 0b\n\
- nop"
- :: "r" (_delay) );
-}