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1 /* Machine-dependent configuration for GNU Emacs for AT&T 3b machines.
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2 Copyright (C) 1986 Free Software Foundation, Inc.
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3
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4 Modified by David Robinson (daver@csvax.caltech.edu) 6/6/86
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5
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6 This file is part of GNU Emacs.
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7
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8 GNU Emacs is free software; you can redistribute it and/or modify
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9 it under the terms of the GNU General Public License as published by
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10 the Free Software Foundation; either version 2, or (at your option)
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11 any later version.
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12
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13 GNU Emacs is distributed in the hope that it will be useful,
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14 but WITHOUT ANY WARRANTY; without even the implied warranty of
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15 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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16 GNU General Public License for more details.
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17
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18 You should have received a copy of the GNU General Public License
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19 along with XEmacs; see the file COPYING. If not, write to
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20 the Free Software Foundation, Inc., 59 Temple Place - Suite 330,
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21 Boston, MA 02111-1307, USA. */
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22
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23 /* Synched up with: FSF 19.31. */
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24
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25 /* The following line tells the configuration script what sort of
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26 operating system this machine is likely to run.
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27 USUAL-OPSYS="usg5-2-2" */
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28
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29 /* Define WORD_MACHINE if addresses and such have
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30 * to be corrected before they can be used as byte counts. */
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31
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32 /* #define WORD_MACHINE */
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33
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34 /* Now define a symbol for the cpu type, if your compiler
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35 does not define it automatically */
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36 #define ATT3B
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37
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38 /* Define EXPLICIT_SIGN_EXTEND if XINT must explicitly sign-extend
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39 the bit field into an int. In other words, if bit fields
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40 are always unsigned.
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41
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42 If you use NO_UNION_TYPE, this flag does not matter. */
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43
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44 #define EXPLICIT_SIGN_EXTEND
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45
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46 /* Data type of load average, as read out of kmem. */
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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 /* #define CANNOT_DUMP */
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57
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58 /* Define VIRT_ADDR_VARIES if the virtual addresses of
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59 pure and impure space as loaded can vary, and even their
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60 relative order cannot be relied on.
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61
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62 Otherwise Emacs assumes that text space precedes data space,
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63 numerically. */
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64
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65 /* #define VIRT_ADDR_VARIES */ /* Karl Kleinpaste says this isn't needed. */
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66
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67 /* Define C_ALLOCA if this machine does not support a true alloca
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68 and the one written in C should be used instead.
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69 Define HAVE_ALLOCA to say that the system provides a properly
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70 working alloca function and it should be used.
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71 Define neither one if an assembler-language alloca
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72 in the file alloca.s should be used. */
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73
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74 /* SysV has alloca in the PW library */
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75
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163
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76 #define LIB_STANDARD "-lPW -lc"
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0
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77 #define HAVE_ALLOCA
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78
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79 /* Define NO_REMAP if memory segmentation makes it not work well
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80 to change the boundary between the text section and data section
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81 when Emacs is dumped. If you define this, the preloaded Lisp
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82 code will not be sharable; but that's better than failing completely. */
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83
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84 #define NO_REMAP
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85
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86 /* #define LD_SWITCH_MACHINE -N */
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87
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88 /* Use Terminfo, not Termcap. */
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89
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90 #define TERMINFO
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91
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92 /* -O has been observed to make correct C code in Emacs not work.
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93 So don't try to use it. */
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94
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95 #if u3b2 || u3b5 || u3b15
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96 #define C_OPTIMIZE_SWITCH
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97 #endif
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98
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99 /* Define our page size. */
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100
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101 #define NBPC 2048
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102
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103 /* The usual definition of XINT, which involves shifting, does not
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104 sign-extend properly on this machine. */
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105
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106 #define XREALINT(i) (((sign_extend_temp=(i)) & 0x00800000) \
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107 ? (sign_extend_temp | 0xFF000000) \
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108 : (sign_extend_temp & 0x00FFFFFF))
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109
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110 #ifdef emacs /* Don't do this when making xmakefile! */
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111 extern int sign_extend_temp;
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112 #endif
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113
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114 #if u3b2 || u3b5 || u3b15
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115
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116 /* On 3b2/5/15, data space has high order bit on. */
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117 #define VALBITS 27
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118 #define VALMASK (((1<<VALBITS) - 1) | (1 << 31))
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203
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119 /* XEmacs: markbit is between type bits and value bits */
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120 /* #define XTYPE(a) ((enum Lisp_Type) (((a) >> VALBITS) & GCTYPEMASK)) */
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121 #define XTYPE(a) ((enum Lisp_Type) (((a) >> ((VALBITS) + 1)) & GCTYPEMASK))
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0
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122
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123 #endif /* 3b2, 3b5 or 3b15 */
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124
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125 #define TEXT_START 0
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126
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127
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128 /* For alloca.c (not actually used, since HAVE_ALLOCA) */
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129 #define STACK_DIRECTION 1
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130
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131 /* (short) negative-int doesn't sign-extend correctly */
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132 #define SHORT_CAST_BUG
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133
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134 /* 3B2s with WIN/3B have winsize defined in ptem.h */
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135 #if u3b2
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136 #define NEED_PTEM_H
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137 #endif /* u3b2 */
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138
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139 /* 3b2 does not have memmove, I'm told. */
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140 /* It is safe to have no parens around the args in the safe_bcopy call,
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141 and parens would screw up the prototype decl for memmove. */
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142 #define memmove(d, s, n) safe_bcopy (s, d, n)
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143
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144 /* This affects filemode.c. */
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145 #define NO_MODE_T
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