[unix-history] / usr / src / sys / tahoe / align / Aprobew.c

/*	Aprobew.c	1.2	90/12/04	*/

#include "align.h" 

#define	PSL_USER	PSL_CURMOD
probew(infop)	process_info *infop;
/*
/*	Probe write accessability.
/*
/*************************************/
{
	register	long	Register_12;	/* Has to be first reg ! */
	register	long	Register_11;
	register	long	Register_10;
	register	long	Register_9;

	Register_9 = operand(infop,0)->data & 1;	/* Required mode */
	if (psl & PSL_USER) Register_9 = 1;		/* user can't probe as
							 *  kernel ! */
	Register_10 = operand(infop,1)->address;	/* Base address */
	Register_11 = operand(infop,2)->data;		/* Length */
	Register_12=psl;
	Set_psl(r12);	/* restore the user psl */
	asm ("	probew	r9,(r10),r11");
	asm ("	movpsl	r12");
	New_cc (Register_12);
}
Commit	Line	Data
6499767c	1	/* Aprobew.c 1.2 90/12/04 */
c37c5e4d	2
6499767c	3	#include "align.h"
c37c5e4d SL	4
	5	#define PSL_USER PSL_CURMOD
	6	probew(infop) process_info *infop;
	7	/*
	8	/* Probe write accessability.
	9	/*
	10	/*************************************/
	11	{
	12	register long Register_12; /* Has to be first reg ! */
	13	register long Register_11;
	14	register long Register_10;
	15	register long Register_9;
	16
	17	Register_9 = operand(infop,0)->data & 1; /* Required mode */
	18	if (psl & PSL_USER) Register_9 = 1; /* user can't probe as
	19	* kernel ! */
	20	Register_10 = operand(infop,1)->address; /* Base address */
	21	Register_11 = operand(infop,2)->data; /* Length */
	22	Register_12=psl;
	23	Set_psl(r12); /* restore the user psl */
	24	asm (" probew r9,(r10),r11");
	25	asm (" movpsl r12");
	26	New_cc (Register_12);
	27	}