www.pudn.com > MP3+JPEG.rar > unExtMem.h

// Description: Support long pointer for near pointer compiler 
// Author     :J.K.Chen and Taylor Wang 
// Date       :2004/3/15 
//////////////////////////////////////////////////////////////// 
#ifndef	__UNEXTMEM_H__ 
#define	__UNEXTMEM_H__ 
 
#define LPCONST __attribute__((section(".code"))) 
 
#define GETSEG(label)	({					\ 
	register unsigned int __t;							\ 
	__asm__ __volatile__ ("%0 = seg %1"		\ 
		:"=r"(__t)							\ 
		:"p"(&label)						\ 
		);									\ 
	__t;									\ 
	}) 
#define GETHI6(label)	({					\ 
	register unsigned int __t;							\ 
	__asm__ __volatile__ ("%0 = high6 %1"	\ 
		:"=r"(__t)							\ 
		:"p"(&label)						\ 
		);									\ 
	__t;									\ 
	}) 
#define LB2LP(label)	({					\ 
	register union {						\ 
		unsigned long oval;					\ 
		unsigned int ival[2];				\ 
	}__t;									\ 
	__asm__ ("%0 = offset %2\n"				\ 
	"\t%1 = seg %2"							\ 
	:										\ 
	:"r"(__t.ival[0]),"r"(__t.ival[1]),		\ 
	"p"(&label)								\ 
	);										\ 
	__t.oval;								\ 
}) 
#define SP2LP(b) \ 
	(LPTR)(UINT) b 
#define GLPSTR(content)	({					\ 
	static LPCONST unsigned int __farstr[] = content;	\ 
	LB2LP(__farstr);						\ 
}) 
 
#define T_LHEAD(name)						\ 
	__asm__ (".public _"###name##"\n"		\ 
		".code\n"							\ 
		"_"###name##":"						\ 
		); 
		 
#define T_LLIST(element)					\ 
		__asm__(".dw offset _"###element	\ 
		",seg _"###element); 
		 
void WVUL(unsigned long paddr,unsigned long value); 
unsigned long RVUL(unsigned long paddr); 
void WVUI(unsigned long paddr, int value); 
unsigned int RVUI(unsigned long paddr); 
void WLPUL(unsigned int seg,unsigned int offset,unsigned long value); 
unsigned long RLPUL(unsigned int seg,unsigned int offset); 
void WLPUI(unsigned int seg,unsigned int offset, int value); 
unsigned int RLPUI(unsigned int seg,unsigned int offset); 
 
#endif