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428
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1 /* machine description for Bull DPX/2 range
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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="usg5-3" */
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26
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27 /*
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28 * You need to either un-comment one of these lines, or copy one
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29 * of them to config.h before you include this file.
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30 * Note that some simply define a constant and others set a value.
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31 */
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32
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33 /* #define ncl_el /* DPX/2 210,220 etc */
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34 /* #define ncl_mr 1 /* DPX/2 320,340 (and 360,380 ?) */
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35
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36 /* Define WORD_MACHINE if addresses and such have
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37 * to be corrected before they can be used as byte counts. */
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38
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39 /* #define WORD_MACHINE /**/
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40
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41 /* Now define a symbol for the cpu type, if your compiler
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42 does not define it automatically:
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43 Ones defined so far include vax, m68000, ns16000, pyramid,
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44 orion, tahoe, APOLLO and many others */
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45
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46 /* /bin/cc on ncl_el and ncl_mr define m68k and mc68000 */
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47
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48 /* Define EXPLICIT_SIGN_EXTEND if XINT must explicitly sign-extend
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49 the bit field into an int. In other words, if bit fields
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50 are always unsigned.
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51
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52 If you use NO_UNION_TYPE, this flag does not matter. */
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53
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54 #define EXPLICIT_SIGN_EXTEND
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55
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56 /* Data type of load average, as read out of kmem. */
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57
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58 #define LOAD_AVE_TYPE long
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59
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60 /* Convert that into an integer that is 100 for a load average of 1.0 */
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61
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62 #define FSCALE 1000.0
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63 #define LOAD_AVE_CVT(x) (int) (((double) (x)) * 100.0 / FSCALE)
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64
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65 /* Define CANNOT_DUMP on machines where unexec does not work.
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66 Then the function dump-emacs will not be defined
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67 and temacs will do (load "loadup") automatically unless told otherwise. */
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68
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69 /*#define CANNOT_DUMP /**/
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70
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71 /* Define VIRT_ADDR_VARIES if the virtual addresses of
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72 pure and impure space as loaded can vary, and even their
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73 relative order cannot be relied on.
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74
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75 Otherwise Emacs assumes that text space precedes data space,
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76 numerically. */
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77
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78 /* #define VIRT_ADDR_VARIES /**/
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79
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80 /* Define C_ALLOCA if this machine does not support a true alloca
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81 and the one written in C should be used instead.
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82 Define HAVE_ALLOCA to say that the system provides a properly
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83 working alloca function and it should be used.
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84 Define neither one if an assembler-language alloca
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85 in the file alloca.s should be used. */
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86
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87 #define C_ALLOCA
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88 /* #define HAVE_ALLOCA /**/
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89
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90 /* Define NO_REMAP if memory segmentation makes it not work well
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91 to change the boundary between the text section and data section
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92 when Emacs is dumped. If you define this, the preloaded Lisp
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93 code will not be sharable; but that's better than failing completely. */
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94
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95 #define NO_REMAP
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96
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97 /*
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98 * end of the standard macro's
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99 */
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100
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101 /*
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102 * a neat identifier to handle source mods (if needed)
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103 */
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104 #ifndef DPX2
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105 #define DPX2
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106 #endif
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107
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108 /* Disable support for shared libraries in unexec. */
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109
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110 #undef USG_SHARED_LIBRARIES
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111
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112 /*
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113 * if we use X11, libX11.a has these...
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114 */
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115 # undef LIB_X11_LIB
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116 # define LIB_X11_LIB "-lX11"
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117 # undef LIBX11_SYSTEM
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118 # define LIBX11_SYSTEM "-lmalloc -lnsl"
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119
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120 /*
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121 * useful if you have INET loaded
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122 */
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123 # define LIBS_MACHINE "-linet"
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124
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125
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126 #if (defined(ncl_mr) || defined(ncl_el)) && !defined (NBPC)
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127 # define NBPC 4096
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128 #endif
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129
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130 /*
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131 * if SIGIO is defined, much of the emacs
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132 * code assumes we are BSD !!
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133 */
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134 #ifdef SIGIO
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135 #define BROKEN_SIGIO
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136 #endif
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137
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138
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139 #ifdef SIGTSTP
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140 /*
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141 * sysdep.c(sys_suspend) works fine with emacs-18.58
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142 * and BOS 02.00.45, if you have an earler version
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143 * of Emacs and/or BOS, or have problems, or just prefer
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144 * to start a sub-shell rather than suspend-emacs,
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145 * un-comment out the next line.
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146 */
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147 /* # undef SIGTSTP /* make suspend-emacs spawn a sub-shell */
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148 #endif
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149 /*
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150 * no we don't want this at all
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151 */
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152 #ifdef USG_JOBCTRL
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153 # undef USG_JOBCTRL
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154 #endif
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155
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156 /* select also needs this header file--but not in ymakefile. */
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157 #ifndef NOT_C_CODE
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158 #include <sys/types.h>
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159 #include <sys/select.h>
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160 #endif
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161
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162 #define TEXT_START 0
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163
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164 /*
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165 * Define the direction of stack growth.
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166 */
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167
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168 #define STACK_DIRECTION -1
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169
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170 /* we also have this */
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171 #define HAVE_PTYS
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172 #define SYSV_PTYS
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173
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174 /* on bos2.00.45 there is a bug that makes the F_SETOWN fcntl() call
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175 enters in an infinite loop. Avoid calling it */
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176 #define F_SETOWN_BUG
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177
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178 /* system closedir sometimes complains about wrong descriptor
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179 for no apparent reasons. Use the provided closedir in sysdep.c instead */
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180 #ifdef HAVE_CLOSEDIR
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181 #undef HAVE_CLOSEDIR
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182 #endif
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183
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184 /* This is to prevent memory clobbering on the DPX/2 200. */
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185 #define LD_SWITCH_MACHINE "-N -T32"
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186
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187 /* end of dpx2.h */
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188
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189
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