machine.h

来自「<B>Digital的Unix操作系统VAX 4.2源码</B>」· C头文件 代码 · 共 33 行

/*
 * @(#)machine.h	4.1	ULTRIX	7/2/90
 */

#include "../h/vm.h"

#define	PAGSIZ		(NBPG*CLSIZE)

#define DBNAME "kdb\n"
#define LPRMODE "%R"
#define OFFMODE "+%R"
#define	TXTRNDSIZ	PAGSIZ

#define	MAXINT	0x7fffffff
#define	MAXSTOR ((1L<<31) - ctob(UPAGES))
#define	MAXFILE 0xffffffff

/*
 * INSTACK tells whether its argument is a stack address.
 * INUDOT tells whether its argument is in the (extended) u. area.
 * These are used for consistency checking and dont have to be exact.
 *
 * INKERNEL tells whether its argument is a kernel space address.
 * KVTOPH trims a kernel virtal address back to its offset
 * in the kernel address space.
 */
#define	INSTACK(x)	(((x)&0xf0000000) == 0x70000000)
#define	INUDOT(x)	(((x)&0xf0000000) == 0x70000000)
#define	INKERNEL(x)	(((x)&0xf0000000) == 0x80000000)

#define	KVTOPH(x)	((x)&~ 0x80000000)
#define	KERNOFF		0x80000000