单片机intrins.h文件如何修改?可以循环移动4个字节的数据

ID:980872 · 发表于 2021-11-16 09:50

intrins.h 这个文件，_crol_ 只能操作unsigned char 的数据，我想循环移动4个字节的数据，请问一下这个intrins.h 文件怎么改呢？还要改别的文件吗？
/*--------------------------------------------------------------------------
INTRINS.H

Intrinsic functions for C51.
Copyright (c) 1988-2010 Keil Elektronik GmbH and ARM Germany GmbH
All rights reserved.
--------------------------------------------------------------------------*/

#ifndef __INTRINS_H__
#define __INTRINS_H__

#pragma SAVE

#if defined (__CX2__)
#pragma FUNCTIONS(STATIC)
/* intrinsic functions are reentrant, but need static attribute */
#endif

extern void       _nop_    (void);
extern bit          _testbit_ (bit);
extern unsigned char _cror_ (unsigned char, unsigned char);
extern unsigned int  _iror_ (unsigned int,  unsigned char);
extern unsigned long _lror_ (unsigned long, unsigned char);
extern unsigned char _crol_ (unsigned char, unsigned char);
extern unsigned int  _irol_ (unsigned int,  unsigned char);
extern unsigned long _lrol_ (unsigned long, unsigned char);
extern unsigned char _chkfloat_(float);
#if defined (__CX2__)
extern int          abs    (int);
extern void       _illop_ (void);
#endif
#if !defined (__CX2__)
extern void       _push_ (unsigned char _sfr);
extern void       _pop_    (unsigned char _sfr);
#endif

#pragma RESTORE

#endif

ID:824490 · 发表于 2021-11-16 11:03

不用改， _irol_ (unsigned int, unsigned char);这个就行了

ID:980872 · 发表于 2021-11-16 11:28

名字不是重点发表于 2021-11-16 11:03
不用改， _irol_ (unsigned int, unsigned char);这个就行了

_irol_ (unsigned int, unsigned char); 用的是keil C51，版本5，单片机是C8051F330，你看他的参数，我是unsigned int，我单步调试的话，循环移动的是后面16位

ID:980872 · 发表于 2021-11-16 11:37

用这个_lrol_，就可以对long进行操作了，谢谢

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