cpu.h

一个小型化的嵌入式实时操作系统源代码

/*
; ---------------------------------------------------------------------
; Header: cpu.h - cpu specific defines, MB80832 SPARClite-specific 
;
; uC/OS Real-time multitasking kernel for the SPARCLite processor.
;
; Written by Brad Denniston ([e-mail]) Sept 1998 
; ---------------------------------------------------------------------
*/

#ifndef _CPU_H_
#define _CPU_H_

#define	DEFAULT_STACK_FRAME	60		/* 16 for %l,%i; 36 for context; 
									   8 for callee, hidden value & alignment */

/* Interrupts */
#define	TRIGGER_MODE1	0x05100000
#define	IRL_CLEAR		0x00100000
#define	TRIGGER_MODE0	0x11c00000	/* int 11 falling edge */
#define	IRQ_MASK		0xf7fe0000	/* int 11 -- 1 second timer */
#define	IRQ_ALLMASK		0xffff0000	/* mask all ints */
#define	IRL_ALLCLEAR	0xffff0000	/* clear all ints */

#ifdef LANGUAGE_C
extern void		CPUInit();
extern void		IRQEnable(int);
extern void		IRQDisable(int);
extern int		IRQSetIntLevel(int);
extern void		IRQTrap(int);
#endif

#endif /* _CPU_H_ */