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428
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1 /* machine description file for Iris-4D machines. Use with s-iris3-6.h
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2 Copyright (C) 1987 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="irix3-3" */
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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 #undef 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 #ifndef mips
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38 #define mips
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39 #endif
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40
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41 #ifndef IRIS_4D
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42 #define IRIS_4D
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43 #endif
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44
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45 /* Define EXPLICIT_SIGN_EXTEND if XINT must explicitly sign-extend
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46 the bit field into an int. In other words, if bit fields
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47 are always unsigned.
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48
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49 If you use NO_UNION_TYPE, this flag does not matter. */
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50
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51 #define EXPLICIT_SIGN_EXTEND
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52
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53 /* Data type of load average, as read out of kmem. */
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54
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55 #define LOAD_AVE_TYPE long /* This doesn't quite work on the 4D */
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56
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57 /* Convert that into an integer that is 100 for a load average of 1.0 */
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58
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59 #define LOAD_AVE_CVT(x) (int)(((double)(x)*100)/1024.0)
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60
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61 /* s-iris3-6.h uses /vmunix */
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62
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63 #undef KERNEL_FILE
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64 #define KERNEL_FILE "/unix"
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65
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66 /* Define CANNOT_DUMP on machines where unexec does not work.
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67 Then the function dump-emacs will not be defined
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68 and temacs will do (load "loadup") automatically unless told otherwise. */
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69
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70 #undef CANNOT_DUMP
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71
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72 /* Define VIRT_ADDR_VARIES if the virtual addresses of
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73 pure and impure space as loaded can vary, and even their
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74 relative order cannot be relied on.
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75
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76 Otherwise Emacs assumes that text space precedes data space,
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77 numerically. */
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78
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79 /* #define VIRT_ADDR_VARIES */
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80
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81 /* Define C_ALLOCA if this machine does not support a true alloca
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82 and the one written in C should be used instead.
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83 Define HAVE_ALLOCA to say that the system provides a properly
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84 working alloca function and it should be used.
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85 Define neither one if an assembler-language alloca
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86 in the file alloca.s should be used. */
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87
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88 #define C_ALLOCA
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89 /* #define HAVE_ALLOCA */
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90
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91 /* Define NO_REMAP if memory segmentation makes it not work well
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92 to change the boundary between the text section and data section
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93 when Emacs is dumped. If you define this, the preloaded Lisp
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94 code will not be sharable; but that's better than failing completely. */
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95
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96 #define NO_REMAP
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97
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98 /* This machine requires completely different unexec code
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99 which lives in a separate file. Specify the file name. */
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100
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101 #ifdef UNEXEC
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102 #undef UNEXEC
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103 #endif
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104 #define UNEXEC "unexelf.o"
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105
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106 #define TEXT_START 0x400000
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107
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108 /*
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109 * DATA_SEG_BITS forces extra bits to be or'd in with any pointers which
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110 * were stored in a Lisp_Object (as Emacs uses fewer than 32 bits for
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111 * the value field of a LISP_OBJECT).
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112 */
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113
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114 #define DATA_START 0x10000000
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115 #define DATA_SEG_BITS 0x10000000
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116
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117 #undef LIBS_MACHINE
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118 /* -lsun in case using Yellow Pages for passwords. */
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119 #define LIBS_DEBUG
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120
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121 /* Define this if you have a fairly recent system,
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122 in which crt1.o and crt1.n should be used. */
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123 #define HAVE_CRTN
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124
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125 #ifdef HAVE_CRTN
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126 /* Must define START-FILES so that the linker can find /usr/lib/crt0.o. */
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127 #define START_FILES "pre-crt0.o /usr/lib/crt1.o"
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128 #define LIB_STANDARD "-lbsd -lc /usr/lib/crtn.o"
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129 #else
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130 #define START_FILES "pre-crt0.o /usr/lib/crt0.o"
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131 /* The entry-point label (start of text segment) is `start', not `__start'. */
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132 #define DEFAULT_ENTRY_ADDRESS start
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133 #define LIB_STANDARD "-lbsd -lc"
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134 #endif
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135
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136 /* Use terminfo instead of termcap. */
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137
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138 #define TERMINFO
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139
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140 /* sioctl.h should be included where appropriate. */
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141
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142 #define NEED_SIOCTL
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143
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144 /* Letter to use in finding device name of first pty,
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145 if system supports pty's. 'a' means it is /dev/ptya0 */
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146
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147 #undef FIRST_PTY_LETTER
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148 #define FIRST_PTY_LETTER 'q'
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149
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150 /* Define STACK_DIRECTION for alloca.c */
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151
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152 #define STACK_DIRECTION -1
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153
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154 #ifndef __GNUC__
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155 /* Turn off some "helpful" error checks for type mismatches
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156 that we can't fix without breaking other machines. */
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157 #define C_SWITCH_MACHINE "-cckr"
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158 #endif
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