1*45760Sbostic /*- 2*45760Sbostic * Copyright (c) 1986 The Regents of the University of California. 3*45760Sbostic * All rights reserved. 4*45760Sbostic * 5*45760Sbostic * This code is derived from software contributed to Berkeley by 6*45760Sbostic * Computer Consoles Inc. 7*45760Sbostic * 8*45760Sbostic * %sccs.include.redist.c% 9*45760Sbostic * 10*45760Sbostic * @(#)align.c 7.1 (Berkeley) 12/06/90 11*45760Sbostic */ 1229646Ssam 1345699Sbostic #include "align.h" 1429646Ssam 1529646Ssam /* 1629646Ssam * Part of the parameter list is set up by locore.s. 1729646Ssam * First 2 dummy variables MUST BE the first local 1829646Ssam * variables; leaving place for registers 0 and 1 1929646Ssam * which are not preserved by the current C compiler. 2029646Ssam * Then, the array of structures and the last_operand 2129646Ssam * HAVE to be in the given order, to correspond to the 2229646Ssam * description of process_info in 'alignment.h'. 2329646Ssam */ alignment()2429646Ssamalignment() 2529646Ssam { 2629646Ssam long space_4_Register_1; /* register 1 */ 2729646Ssam long space_4_Register_0; /* register 0 */ 2829646Ssam struct oprnd space_4_decoded[4]; 2929646Ssam long space_4_opcode; 3029646Ssam long space_4_last_operand; /* Last operand # processed */ 3129646Ssam long space_4_saved_pc; 3229646Ssam long space_4_saved_sp; 3329646Ssam 3429646Ssam register process_info *infop; 3529646Ssam 3629646Ssam infop = (process_info *)&space_4_saved_sp; 3729646Ssam saved_pc = pc; 3829646Ssam saved_sp = sp; /* For possible exceptions */ 3929646Ssam 4029646Ssam last_operand = -1; /* To get the operand routine going correctly */ 4129646Ssam 4229646Ssam opCODE = 0xff & *(char *)pc; 4329646Ssam pc++; 4429646Ssam (*Table[opCODE].routine) (infop); /* Call relevant handler */ 4529646Ssam /* 4629646Ssam * NOTE: nothing should follow, except the return. 4729646Ssam * The register variables cannot be trusted anymore, 4829646Ssam * if an exception is signalled. See 'exception.c' 4929646Ssam * to understand why. 5029646Ssam */ 5129646Ssam } 52