cpu_insn.h

来自「uT Kernel os source code for AT91」· C头文件 代码 · 共 73 行

/*
 *----------------------------------------------------------------------
 *    micro T-Kernel
 *
 *    Copyright (C) 2006-2007 by Ken Sakamura. All rights reserved.
 *    micro T-Kernel is distributed under the micro T-License.
 *----------------------------------------------------------------------
 *
 *    Version:   1.00.00
 *    Released by T-Engine Forum(http://www.t-engine.org) at 2007/03/26.
 *
 *----------------------------------------------------------------------
 */

/*
 *	cpu_insn.h (H8S2212)
 *	H8S2212-Dependent Operation
 */

#ifndef _CPU_INSN_
#define _CPU_INSN_

#include <sys/sysinfo.h>

IMPORT	W	knl_taskindp;

/* ------------------------------------------------------------------------ */
/*
 *	Control register operation
 */

/*
 * Get SR
 */
Inline UINT knl_getSR( void )
{
	UB	sr;
	Asm("stc.b ccr, %0l\n" : "=r"(sr));
	return sr;
}

/*
 * Set interrupt handler
 */
Inline void knl_define_inthdr( INT vecno, FP inthdr )
{
	knl_intvec[vecno] = inthdr;
}

/*
 * If it is the task-independent part, TRUE
 */
Inline BOOL knl_isTaskIndependent( void )
{
	return ( knl_taskindp > 0 )? TRUE: FALSE;
}

/*
 * Move to/Restore task independent part
 */
Inline void knl_EnterTaskIndependent( void )
{
	knl_taskindp++;
}
Inline void knl_LeaveTaskIndependent( void )
{
	knl_taskindp--;
}

/* ------------------------------------------------------------------------ */

#endif /* _CPU_INSN_ */