1 /*- 2 * Copyright (c) 1986 The Regents of the University of California. 3 * All rights reserved. 4 * 5 * This code is derived from software contributed to Berkeley by 6 * Computer Consoles Inc. 7 * 8 * %sccs.include.redist.c% 9 * 10 * @(#)Ashal.c 7.1 (Berkeley) 12/06/90 11 */ 12 13 #include "align.h" shal(infop)14shal(infop) process_info *infop; 15 /* 16 /* Shift arithmetic left (longword). 17 /* Checks for overflow. 18 /* 19 /*******************************/ 20 { 21 register long Register_12; /* Has to be first reg ! */ 22 register long Register_11; 23 register long Register_10; 24 25 Register_12 = operand(infop,0)->data; 26 Register_11 = operand(infop,1)->data; 27 Register_10=psl; 28 Set_psl(r10); /* restore the user psl */ 29 asm (" shal r12,r11,r10"); 30 asm (" movpsl r12"); 31 New_cc (Register_12); 32 write_back (infop, Register_10, operand(infop,2)); 33 } 34