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1 /* machine description file for SEQUENT BALANCE machines
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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="note"
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26
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27 NOTE-START
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28 Use -opsystem=bsd4-2, or -opsystem=bsd4-3 on newer systems.
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29 NOTE-END */
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30
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31 /* NOTE: this file works for DYNIX release 2.0
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32 (not tested on 1.3) on NS32000's */
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33
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34 /* Define WORD_MACHINE if addresses and such have
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35 * to be corrected before they can be used as byte counts. */
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36
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37 /* #define WORD_MACHINE */
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38
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39 /* Now define a symbol for the cpu type, if your compiler
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40 does not define it automatically:
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41 vax, m68000, ns16000, pyramid, orion, tahoe and APOLLO
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42 are the ones defined so far. */
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43
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44 /* BTW: DYNIX defines sequent, ns32000, and ns16000 (GENIX compatibility) */
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45 #ifndef sequent /* pre DYNIX 2.1 releases */
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46 # define sequent
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47 #endif
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48
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49 /* crt0.c should use the vax-bsd style of entry, with these dummy args. */
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50
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51 #define CRT0_DUMMIES bogus_fp,
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52
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53 /* crt0.c should define a symbol `start' and do .globl with a dot. */
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54
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55 #define DOT_GLOBAL_START
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56
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57 /* Define EXPLICIT_SIGN_EXTEND if XINT must explicitly sign-extend
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58 the bit field into an int. In other words, if bit fields
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59 are always unsigned.
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60
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61 If you use NO_UNION_TYPE, this flag does not matter. */
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62
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63 #define EXPLICIT_SIGN_EXTEND
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64
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65 /* Data type of load average, as read out of kmem. */
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66
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67 #define LOAD_AVE_TYPE unsigned long
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68
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69 /* Convert that into an integer that is 100 for a load average of 1.0 */
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70
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71 #define FSCALE 1000.0
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72 #define LOAD_AVE_CVT(x) (int) (((double) (x)) * 100.0 / FSCALE)
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73
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74 /* Define CANNOT_DUMP on machines where unexec does not work.
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75 Then the function dump-emacs will not be defined
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76 and temacs will do (load "loadup") automatically unless told otherwise. */
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77
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78 /* #define CANNOT_DUMP */
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79
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80 /* Define VIRT_ADDR_VARIES if the virtual addresses of
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81 pure and impure space as loaded can vary, and even their
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82 relative order cannot be relied on.
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83
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84 Otherwise Emacs assumes that text space precedes data space,
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85 numerically. */
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86
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87 /* #define VIRT_ADDR_VARIES */
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88
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89 /* Define C_ALLOCA if this machine does not support a true alloca
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90 and the one written in C should be used instead.
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91 Define HAVE_ALLOCA to say that the system provides a properly
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92 working alloca function and it should be used.
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93 Define neither one if an assembler-language alloca
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94 in the file alloca.s should be used. */
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95
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96 /* #define C_ALLOCA */
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97 #define HAVE_ALLOCA
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98
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99 /* Name of file the to look in
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100 for the kernel symbol table (for load average) */
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101
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102 #undef KERNEL_FILE
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103 #define KERNEL_FILE "/dynix"
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104
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105 /* Avoids a compiler bug */
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106
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107 #define TAHOE_REGISTER_BUG
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108
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109 /* Say that the text segment of a.out includes the header;
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110 the header actually occupies the first few bytes of the text segment
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111 and is counted in hdr.a_text. Furthermore, the value written
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112 in the a_text in the file must have N_ADDRADJ added to it. */
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113
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114 #define A_TEXT_OFFSET(HDR) (sizeof (HDR) + N_ADDRADJ (HDR))
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115
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116 /* This is the offset of the executable's text, from the start of the file. */
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117
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118 #define A_TEXT_SEEK(HDR) (N_TXTOFF (hdr) + sizeof (hdr))
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119
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120 /* (short) negative-int doesn't sign-extend correctly */
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121 #define SHORT_CAST_BUG
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122
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123 /* Cause compilations to be done in parallel in ymakefile. */
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124 #define MAKE_PARALLEL &
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125
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126 /* Say that mailer interlocking uses flock. */
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127 #define MAIL_USE_FLOCK
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128
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129 /* On many 4.2-based systems, there's a rather tricky bug
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130 * with the interpretation of the pid/pgrp value given to
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131 * the F_SETOWN fcntl() call. It works as documented EXCEPT
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132 * when applied to filedescriptors for sockets, in which case
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133 * the sign must be reversed. If your emacs subprocesses get
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134 * SIGIO's when they shouldn't, while running on a socket
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135 * (e.g. under X windows), you should probably define this.
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136 */
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137
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138 #define F_SETOWN_SOCK_NEG
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139
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140 /* Some really obscure 4.2-based systems (like Sequent DYNIX)
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141 * do not support asynchronous I/O (using SIGIO) on sockets,
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142 * even though it works fine on tty's. If you have one of
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143 * these systems, define the following, and then use it in
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144 * config.h (or elsewhere) to decide when (not) to use SIGIO.
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145 */
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146
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147 #define NO_SOCK_SIGIO
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148
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149 /* Define how to search all pty names.
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150 This is for Dynix 3.0; delete next 5 definitions for older systems. */
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151
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152 #define PTY_MAJOR "pqrstuvwPQRSTUVW"
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153 #define PTY_MINOR "0123456789abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ"
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154 #define PTY_ITERATION \
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155 register int ma, mi; \
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156 for (ma = 0; ma < sizeof(PTY_MAJOR) - 1; ma++) \
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157 for (mi = 0; mi < sizeof(PTY_MINOR) - 1; mi++)
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158 #define PTY_NAME_SPRINTF \
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159 sprintf (ptyname, "/dev/pty%c%c", PTY_MAJOR[ma], PTY_MINOR[mi]);
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160 #define PTY_TTY_NAME_SPRINTF \
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161 sprintf (ptyname, "/dev/tty%c%c", PTY_MAJOR[ma], PTY_MINOR[mi]);
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