enum {	Maxprobe	= 32,}; typedef struct Archtrace Archtrace;struct Archtrace {	uchar	nprobe;	uchar	*text[Maxprobe];	uchar	probe[Maxprobe];	uchar	orig[Maxprobe];}; void	_tracein(void);void	_traceout(void);char	*archtracectlr(Archtrace*, char*, char*);void	archtraceinstall(Archtrace*);void	archtraceuninstall(Archtrace*);int	mkarchtrace(Archtrace*, uchar*, uchar**);