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428
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1 /* machine description file for sgi challange and onyx machines running
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2 Irix 5.1. It will probably work with other new SGI machines.
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3 Use with s-iris5-1.h
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4 by Hayden Schultz <haydens@ll.mit.edu> for XEmacs
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5
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6 Copyright (C) 1987, 1994 Free Software Foundation, Inc.
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7
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8 This file is part of GNU Emacs.
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9
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10 GNU Emacs is free software; you can redistribute it and/or modify
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11 it under the terms of the GNU General Public License as published by
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12 the Free Software Foundation; either version 2, or (at your option)
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13 any later version.
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14
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15 GNU Emacs is distributed in the hope that it will be useful,
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16 but WITHOUT ANY WARRANTY; without even the implied warranty of
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17 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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18 GNU General Public License for more details.
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19
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20 You should have received a copy of the GNU General Public License
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21 along with XEmacs; see the file COPYING. If not, write to
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22 the Free Software Foundation, Inc., 59 Temple Place - Suite 330,
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23 Boston, MA 02111-1307, USA. */
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24
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25 /* Synched up with: Not in FSF. */
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26
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27 /* The following line tells the configuration script what sort of
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28 operating system this machine is likely to run.
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29 USUAL-OPSYS="irix3-3" */
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30
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31 /* Define WORD_MACHINE if addresses and such have
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32 * to be corrected before they can be used as byte counts. */
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33
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34 #undef WORD_MACHINE
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35
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36 /* Now define a symbol for the cpu type, if your compiler
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37 does not define it automatically:
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38 Ones defined so far include vax, m68000, ns16000, pyramid,
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39 orion, tahoe, APOLLO and many others */
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40
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41 #ifndef mips
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42 #define mips
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43 #endif
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44
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45 #ifndef IRIS_4D
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46 #define IRIS_4D
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47 #endif
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48
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49 /*
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50 * For some reason I don't understand, the most expensive machines
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51 * SGI makes are the only SGI machines that don't come with sound
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52 */
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53 #ifdef HAVE_NATIVE_SOUND
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54 #undef HAVE_NATIVE_SOUND
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55 #endif
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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 long /* This doesn't quite work on the 4D */
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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 LOAD_AVE_CVT(x) (int)(((double)(x)*100)/1024.0)
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72
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73 /* s-iris3-6.h uses /vmunix */
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74
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75 #undef KERNEL_FILE
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76 #define KERNEL_FILE "/unix"
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77
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78 /* Define CANNOT_DUMP on machines where unexec does not work.
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79 Then the function dump-emacs will not be defined
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80 and temacs will do (load "loadup") automatically unless told otherwise. */
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81
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82 #undef CANNOT_DUMP
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83
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84 /* Define VIRT_ADDR_VARIES if the virtual addresses of
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85 pure and impure space as loaded can vary, and even their
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86 relative order cannot be relied on.
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87
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88 Otherwise Emacs assumes that text space precedes data space,
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89 numerically. */
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90
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91 /* #define VIRT_ADDR_VARIES */
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92
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93 /* Define C_ALLOCA if this machine does not support a true alloca
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94 and the one written in C should be used instead.
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95 Define HAVE_ALLOCA to say that the system provides a properly
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96 working alloca function and it should be used.
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97 Define neither one if an assembler-language alloca
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98 in the file alloca.s should be used. */
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99
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100 #define C_ALLOCA
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101 /* #define HAVE_ALLOCA */
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102
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103 /* Define NO_REMAP if memory segmentation makes it not work well
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104 to change the boundary between the text section and data section
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105 when Emacs is dumped. If you define this, the preloaded Lisp
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106 code will not be sharable; but that's better than failing completely. */
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107
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108 #define NO_REMAP
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109
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110 /* This machine requires completely different unexec code
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111 which lives in a separate file. Specify the file name. */
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112
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113 #ifdef UNEXEC
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114 #undef UNEXEC
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115 #endif
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116 #define UNEXEC "unexelfsgi.o"
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117
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118 #define TEXT_START 0x400000
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119
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120 /*
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121 * DATA_SEG_BITS forces that bit to be or'd in with any pointers which
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122 * are trying to access pure strings (as gnu-emacs only allows 24 bits
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123 * for the value field of a LISP_OBJECT).
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124 */
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125
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126 #define DATA_START 0x10000000
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127 #define DATA_SEG_BITS 0x10000000
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128
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129 #undef LIBS_MACHINE
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130 /* -lsun in case using Yellow Pages for passwords. */
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131 #define LIBS_DEBUG
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132
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133 /* Define this if you have a fairly recent system,
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134 in which crt1.o and crt1.n should be used. */
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135 #define HAVE_CRTN
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136
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137 #ifdef HAVE_CRTN
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138 /* Must define START-FILES so that the linker can find /usr/lib/crt0.o. */
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139 #define START_FILES "pre-crt0.o /usr/lib/crt1.o"
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140 #define LIB_STANDARD "-lbsd -nocount -lc_s -lc /usr/lib/crtn.o"
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141 #else
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142 #define START_FILES "pre-crt0.o /usr/lib/crt0.o"
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143 /* The entry-point label (start of text segment) is `start', not `__start'. */
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144 #define DEFAULT_ENTRY_ADDRESS start
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145 #define LIB_STANDARD "-lbsd -lc"
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146 #endif
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147
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148 /* Use terminfo instead of termcap. */
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149
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150 #define TERMINFO
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151
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152 /* sioctl.h should be included where appropriate. */
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153
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154 #define NEED_SIOCTL
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155
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156 /* Letter to use in finding device name of first pty,
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157 if system supports pty's. 'a' means it is /dev/ptya0 */
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158
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159 #undef FIRST_PTY_LETTER
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160 #define FIRST_PTY_LETTER 'q'
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161
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162 /* Define STACK_DIRECTION for alloca.c */
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163
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164 #define STACK_DIRECTION -1
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165
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166 /* By Tor Arntsen <tor@spacetec.no> for XEmacs. */
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167 #ifdef USE_GCC
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168 #define C_SWITCH_MACHINE "-D_BSD_TYPES -mcpu=r4000 -mips2"
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169 #else
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170 /* Turn off some "helpful" error checks for type mismatches
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171 that we can't fix without breaking other machines. */
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172 #define C_SWITCH_MACHINE "-D_BSD_TYPES -cckr -acpp -mips2"
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173 #endif
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