1/* machine description file for the Plexus running System V.2. 2 Copyright (C) 1986, 2001, 2002, 2003, 2004, 2005, 3 2006, 2007 Free Software Foundation, Inc. 4 5This file is part of GNU Emacs. 6 7GNU Emacs is free software; you can redistribute it and/or modify 8it under the terms of the GNU General Public License as published by 9the Free Software Foundation; either version 2, or (at your option) 10any later version. 11 12GNU Emacs is distributed in the hope that it will be useful, 13but WITHOUT ANY WARRANTY; without even the implied warranty of 14MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 15GNU General Public License for more details. 16 17You should have received a copy of the GNU General Public License 18along with GNU Emacs; see the file COPYING. If not, write to 19the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor, 20Boston, MA 02110-1301, USA. */ 21 22 23/* The following line tells the configuration script what sort of 24 operating system this machine is likely to run. 25 USUAL-OPSYS="usg5-2" */ 26 27/* Define WORDS_BIG_ENDIAN iff lowest-numbered byte in a word 28 is the most significant byte. */ 29 30#define WORDS_BIG_ENDIAN 31 32/* Define NO_ARG_ARRAY if you cannot take the address of the first of a 33 * group of arguments and treat it as an array of the arguments. */ 34 35#undef NO_ARG_ARRAY 36 37/* Define WORD_MACHINE if addresses and such have 38 * to be corrected before they can be used as byte counts. */ 39 40#undef WORD_MACHINE 41 42/* Now define a symbol for the cpu type, if your compiler 43 does not define it automatically: 44 vax, m68000, ns16000, pyramid, orion, tahoe and APOLLO 45 are the ones defined so far. */ 46/* Plexus predefines m68 instead of m68000. */ 47#define m68000 m68 48 49/* Use type int rather than a union, to represent Lisp_Object */ 50/* This is desirable for most machines. */ 51 52#define NO_UNION_TYPE 53 54/* Define EXPLICIT_SIGN_EXTEND if XINT must explicitly sign-extend 55 the 24-bit bit field into an int. In other words, if bit fields 56 are always unsigned. 57 58 If you use NO_UNION_TYPE, this flag does not matter. */ 59 60#undef EXPLICIT_SIGN_EXTEND 61 62/* Data type of load average, as read out of kmem. */ 63 64#undef LOAD_AVE_TYPE 65 66/* Convert that into an integer that is 100 for a load average of 1.0 */ 67 68#undef LOAD_AVE_CVT 69 70/* Define CANNOT_DUMP on machines where unexec does not work. 71 Then the function dump-emacs will not be defined 72 and temacs will do (load "loadup") automatically unless told otherwise. */ 73 74#undef CANNOT_DUMP 75 76/* Define VIRT_ADDR_VARIES if the virtual addresses of 77 pure and impure space as loaded can vary, and even their 78 relative order cannot be relied on. 79 80 Otherwise Emacs assumes that text space precedes data space, 81 numerically. */ 82 83#undef VIRT_ADDR_VARIES 84 85/* Define NO_REMAP if memory segmentation makes it not work well 86 to change the boundary between the text section and data section 87 when Emacs is dumped. If you define this, the preloaded Lisp 88 code will not be sharable; but that's better than failing completely. */ 89 90#undef NO_REMAP 91 92/* Use the following on ld so we can use the gnu crt0 93 The plexus ld looks for start */ 94#define LD_SWITCH_MACHINE -e __start 95 96/* Use the PW library, which contains alloca. */ 97 98#define LIB_STANDARD -lPW -lc 99 100/* crt0.c should use the vax-bsd style of entry, with no dummy args. */ 101 102#define CRT0_DUMMIES zero1, zero2, 103 104/* This triggers some stuff to avoid a compiler bug */ 105 106#define TAHOE_REGISTER_BUG 107 108/* arch-tag: 78c607eb-b4f8-4750-b575-39670d979448 109 (do not change this comment) */ 110