1/* machine description file template. 2 Copyright (C) 1985, 1986, 2001, 2002, 2003, 2004, 3 2005, 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="<name of system .h file here, without the s- or .h>" */ 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#define 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#define WORD_MACHINE 41 42/* Now define a symbol for the cpu type, if your compiler 43 does not define it automatically: 44 Ones defined so far include vax, m68000, ns16000, pyramid, 45 orion, tahoe, APOLLO and many others */ 46 47/* Use type int rather than a union, to represent Lisp_Object */ 48/* This is desirable for most machines. */ 49 50#define NO_UNION_TYPE 51 52/* Define EXPLICIT_SIGN_EXTEND if XINT must explicitly sign-extend 53 the 24-bit bit field into an int. In other words, if bit fields 54 are always unsigned. 55 56 If you use NO_UNION_TYPE, this flag does not matter. */ 57 58#define EXPLICIT_SIGN_EXTEND 59 60/* Data type of load average, as read out of kmem. */ 61 62#define LOAD_AVE_TYPE long 63 64/* Convert that into an integer that is 100 for a load average of 1.0 */ 65 66#define LOAD_AVE_CVT(x) (int) (((double) (x)) * 100.0 / FSCALE) 67 68/* Define CANNOT_DUMP on machines where unexec does not work. 69 Then the function dump-emacs will not be defined 70 and temacs will do (load "loadup") automatically unless told otherwise. */ 71 72#define CANNOT_DUMP 73 74/* Define VIRT_ADDR_VARIES if the virtual addresses of 75 pure and impure space as loaded can vary, and even their 76 relative order cannot be relied on. 77 78 Otherwise Emacs assumes that text space precedes data space, 79 numerically. */ 80 81#define VIRT_ADDR_VARIES 82 83/* Define NO_REMAP if memory segmentation makes it not work well 84 to change the boundary between the text section and data section 85 when Emacs is dumped. If you define this, the preloaded Lisp 86 code will not be sharable; but that's better than failing completely. */ 87 88#define NO_REMAP 89 90/* Some really obscure 4.2-based systems (like Sequent DYNIX) 91 * do not support asynchronous I/O (using SIGIO) on sockets, 92 * even though it works fine on tty's. If you have one of 93 * these systems, define the following, and then use it in 94 * config.h (or elsewhere) to decide when (not) to use SIGIO. 95 * 96 * You'd think this would go in an operating-system description file, 97 * but since it only occurs on some, but not all, BSD systems, the 98 * reasonable place to select for it is in the machine description 99 * file. 100 */ 101 102#define NO_SOCK_SIGIO 103 104 105/* After adding support for a new system, modify the large case 106 statement in the `configure' script to recognize reasonable 107 configuration names, and add a description of the system to 108 `etc/MACHINES'. 109 110 If you've just fixed a problem in an existing configuration file, 111 you should also check `etc/MACHINES' to make sure its descriptions 112 of known problems in that configuration should be updated. */ 113 114/* arch-tag: d7dae0a9-4f99-4939-bef9-5738e1f33955 115 (do not change this comment) */ 116