/*- * Copyright (c) 1986 The Regents of the University of California. * All rights reserved. * * This code is derived from software contributed to Berkeley by * Computer Consoles Inc. * * Redistribution and use in source and binary forms, with or without * modification, are permitted provided that the following conditions * are met: * 1. Redistributions of source code must retain the above copyright * notice, this list of conditions and the following disclaimer. * 2. Redistributions in binary form must reproduce the above copyright * notice, this list of conditions and the following disclaimer in the * documentation and/or other materials provided with the distribution. * 3. All advertising materials mentioning features or use of this software * must display the following acknowledgement: * This product includes software developed by the University of * California, Berkeley and its contributors. * 4. Neither the name of the University nor the names of its contributors * may be used to endorse or promote products derived from this software * without specific prior written permission. * * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF * SUCH DAMAGE. * * @(#)align.c 7.1 (Berkeley) 12/6/90 */ #include "align.h" /* * Part of the parameter list is set up by locore.s. * First 2 dummy variables MUST BE the first local * variables; leaving place for registers 0 and 1 * which are not preserved by the current C compiler. * Then, the array of structures and the last_operand * HAVE to be in the given order, to correspond to the * description of process_info in 'alignment.h'. */ alignment() { long space_4_Register_1; /* register 1 */ long space_4_Register_0; /* register 0 */ struct oprnd space_4_decoded[4]; long space_4_opcode; long space_4_last_operand; /* Last operand # processed */ long space_4_saved_pc; long space_4_saved_sp; register process_info *infop; infop = (process_info *)&space_4_saved_sp; saved_pc = pc; saved_sp = sp; /* For possible exceptions */ last_operand = -1; /* To get the operand routine going correctly */ opCODE = 0xff & *(char *)pc; pc++; (*Table[opCODE].routine) (infop); /* Call relevant handler */ /* * NOTE: nothing should follow, except the return. * The register variables cannot be trusted anymore, * if an exception is signalled. See 'exception.c' * to understand why. */ }