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1 /* machine description file template.
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2 Copyright (C) 1985, 1986 Free Software Foundation, Inc.
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3
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4 This file is part of GNU Emacs.
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5
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6 GNU Emacs is free software; you can redistribute it and/or modify
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7 it under the terms of the GNU General Public License as published by
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8 the Free Software Foundation; either version 2, or (at your option)
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9 any later version.
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10
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11 GNU Emacs is distributed in the hope that it will be useful,
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12 but WITHOUT ANY WARRANTY; without even the implied warranty of
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13 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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14 GNU General Public License for more details.
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15
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16 You should have received a copy of the GNU General Public License
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17 along with XEmacs; see the file COPYING. If not, write to
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18 the Free Software Foundation, Inc., 59 Temple Place - Suite 330,
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19 Boston, MA 02111-1307, USA. */
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20
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21 /* Synched up with: FSF 19.31. */
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22
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23 /* The following line tells the configuration script what sort of
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24 operating system this machine is likely to run.
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25 USUAL-OPSYS="<name of system .h file here, without the .h>" */
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26
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27 /* Define WORD_MACHINE if addresses and such have
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28 * to be corrected before they can be used as byte counts. */
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29
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30 #define WORD_MACHINE
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31
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32 /* Now define a symbol for the cpu type, if your compiler
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33 does not define it automatically:
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34 Ones defined so far include vax, m68000, ns16000, pyramid,
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35 orion, tahoe, APOLLO and many others */
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36
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37 /* Define EXPLICIT_SIGN_EXTEND if XINT must explicitly sign-extend
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38 the bit field into an int. In other words, if bit fields
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39 are always unsigned.
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40
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41 If you use NO_UNION_TYPE, this flag does not matter. */
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42
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43 #define EXPLICIT_SIGN_EXTEND
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44
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45 /* Data type of load average, as read out of kmem. */
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46
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47 #define LOAD_AVE_TYPE long
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48
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49 /* Convert that into an integer that is 100 for a load average of 1.0 */
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50
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51 #define LOAD_AVE_CVT(x) (int) (((double) (x)) * 100.0 / FSCALE)
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52
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53 /* Define CANNOT_DUMP on machines where unexec does not work.
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54 Then the function dump-emacs will not be defined
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55 and temacs will do (load "loadup") automatically unless told otherwise. */
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56
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57 #define CANNOT_DUMP
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58
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59 /* Define VIRT_ADDR_VARIES if the virtual addresses of
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60 pure and impure space as loaded can vary, and even their
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61 relative order cannot be relied on.
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62
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63 Otherwise Emacs assumes that text space precedes data space,
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64 numerically. */
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65
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66 #define VIRT_ADDR_VARIES
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67
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68 /* Define C_ALLOCA if this machine does not support a true alloca
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69 and the one written in C should be used instead.
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70 Define HAVE_ALLOCA to say that the system provides a properly
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71 working alloca function and it should be used.
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72 Define neither one if an assembler-language alloca
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73 in the file alloca.s should be used. */
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74
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75 #define C_ALLOCA
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76 #define HAVE_ALLOCA
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77
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78 /* Define NO_REMAP if memory segmentation makes it not work well
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79 to change the boundary between the text section and data section
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80 when Emacs is dumped. If you define this, the preloaded Lisp
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81 code will not be sharable; but that's better than failing completely. */
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82
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83 #define NO_REMAP
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84
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85 /* Some really obscure 4.2-based systems (like Sequent DYNIX)
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86 * do not support asynchronous I/O (using SIGIO) on sockets,
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87 * even though it works fine on tty's. If you have one of
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88 * these systems, define the following, and then use it in
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89 * config.h (or elsewhere) to decide when (not) to use SIGIO.
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90 *
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91 * You'd think this would go in an operating-system description file,
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92 * but since it only occurs on some, but not all, BSD systems, the
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93 * reasonable place to select for it is in the machine description
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94 * file.
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95 */
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96
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97 #define NO_SOCK_SIGIO
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98
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99
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100 /* After adding support for a new system, modify the large case
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101 statement in the `configure' script to recognize reasonable
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102 configuration names, and add a description of the system to
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103 `etc/MACHINES'.
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104
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105 If you've just fixed a problem in an existing configuration file,
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106 you should also check `etc/MACHINES' to make sure its descriptions
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107 of known problems in that configuration should be updated. */
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