[unix-history] / usr / src / sys / tahoe / align / Asub2.c

/*	Asub2.c	1.2	90/12/04	*/

#include "align.h" 
sub2(infop)	process_info *infop;
/*
/*	Subtract , 2 operands.
/*
/*****************************************/
{

	register	long	Register_12;	/* Has to be first reg ! */
	register 	long	data0, data1, result;

	data0 = operand(infop,0)->data; 
	data1 = operand(infop,1)->data; 
	Register_12=psl;
	Set_psl(r12);	/* restore the user psl */
	result = data1 - data0;		/* 32 bits of true result */
	asm ("	movpsl	r12");
	New_cc (Register_12);
	write_back (infop,result, operand(infop,1) );
}
Commit	Line	Data
6499767c	1	/* Asub2.c 1.2 90/12/04 */
8cda1fc7	2
6499767c	3	#include "align.h"
8cda1fc7 SL	4	sub2(infop) process_info *infop;
	5	/*
	6	/* Subtract , 2 operands.
	7	/*
	8	/*****************************************/
	9	{
	10
	11	register long Register_12; /* Has to be first reg ! */
	12	register long data0, data1, result;
	13
	14	data0 = operand(infop,0)->data;
	15	data1 = operand(infop,1)->data;
	16	Register_12=psl;
	17	Set_psl(r12); /* restore the user psl */
	18	result = data1 - data0; /* 32 bits of true result */
	19	asm (" movpsl r12");
	20	New_cc (Register_12);
	21	write_back (infop,result, operand(infop,1) );
	22	}