xref: /original-bsd/sys/tahoe/align/Aadd3.c (revision a4d3ae46)
1 /*	Aadd3.c	1.1	86/07/20	*/
2 
3 #include "../tahoealign/align.h"
4 add3(infop)	process_info *infop;
5 /*
6 /*	Add , 3 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 = data0 + data1;		/* 32 bits of true result */
19 	asm ("	movpsl	r12");
20 	New_cc (Register_12);
21 	write_back (infop,result, operand(infop,2) );
22 }
23