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view packages/hal/h8300/sim_s/current/src/delay_us.S @ 1281:f58b62f3c85d

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Apply Yoshinori Sato's H8/300 patches plus a few of my own. See the individual ChangeLogs for detail of the changes in each package.
author nickg
date Mon, 06 Oct 2003 17:28:51 +0000
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;;delay_us

#include <pkgconf/hal.h>	

#include <cyg/hal/arch.inc>	
#include <cyg/hal/basetype.h>
#include <cyg/hal/mod_regs_tmr.h>

#define DELAY_COUNT (CYGHWR_HAL_H8300_PROCESSOR_SPEED/1000000)/8*25
	
//	.file	"delay_us.S"
	.h8300s
	.text

	.global	CYG_LABEL_DEFN(hal_delay_us)
CYG_LABEL_DEFN(hal_delay_us):
	shlr.l	er0
	shlr.l	er0
	shlr.l	er0
	mov.l	er0,er0
1:	
	ble	4f
	dec.l	#1,er0
	bra	1b
4:	
	rts