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428
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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 /* Now define a symbol for the cpu type, if your compiler
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30 does not define it automatically */
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31 #define ATT3B
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32
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33 /* Data type of load average, as read out of kmem. */
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34 /* #define LOAD_AVE_TYPE long */
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35
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36 /* Convert that into an integer that is 100 for a load average of 1.0 */
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37
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38 /* #define LOAD_AVE_CVT(x) (int) (((double) (x)) * 100.0 / FSCALE) */
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39
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40 /* Define C_ALLOCA if this machine does not support a true alloca
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41 and the one written in C should be used instead.
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42 Define HAVE_ALLOCA to say that the system provides a properly
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43 working alloca function and it should be used.
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44 Define neither one if an assembler-language alloca
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45 in the file alloca.s should be used. */
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46
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47 /* SysV has alloca in the PW library */
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48
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49 #define LIB_STANDARD "-lPW -lc"
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50 #define HAVE_ALLOCA
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51
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52 /* Define NO_REMAP if memory segmentation makes it not work well
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53 to change the boundary between the text section and data section
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54 when Emacs is dumped. If you define this, the preloaded Lisp
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55 code will not be sharable; but that's better than failing completely. */
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56
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57 #define NO_REMAP
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58
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59 /* #define LD_SWITCH_MACHINE -N */
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60
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61 /* Use Terminfo, not Termcap. */
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62
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63 #define TERMINFO
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64
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65 /* -O has been observed to make correct C code in Emacs not work.
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66 So don't try to use it. */
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67
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68 #if u3b2 || u3b5 || u3b15
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69 #define C_OPTIMIZE_SWITCH
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70 #endif
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71
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72 /* Define our page size. */
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73
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74 #define NBPC 2048
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75
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76 /* The usual definition of XINT, which involves shifting, does not
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77 sign-extend properly on this machine. */
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78
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79 #define XREALINT(i) (((sign_extend_temp=(i)) & 0x00800000) \
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80 ? (sign_extend_temp | 0xFF000000) \
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81 : (sign_extend_temp & 0x00FFFFFF))
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82
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83 #ifdef emacs /* Don't do this when making xmakefile! */
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84 extern int sign_extend_temp;
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85 #endif
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86
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87 #if u3b2 || u3b5 || u3b15
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88
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89 /* On 3b2/5/15, data space has high order bit on. */
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90 #define VALBITS 27
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91 #define VALMASK (((1<<VALBITS) - 1) | (1 << 31))
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92 /* XEmacs: markbit is between type bits and value bits */
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93 /* #define XTYPE(a) ((enum Lisp_Type) (((a) >> VALBITS) & GCTYPEMASK)) */
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94 #define XTYPE(a) ((enum Lisp_Type) (((a) >> ((VALBITS) + 1)) & GCTYPEMASK))
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95
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96 #endif /* 3b2, 3b5 or 3b15 */
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97
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98 #define TEXT_START 0
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99
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100
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101 /* For alloca.c (not actually used, since HAVE_ALLOCA) */
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102 #define STACK_DIRECTION 1
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103
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104 /* (short) negative-int doesn't sign-extend correctly */
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105 #define SHORT_CAST_BUG
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106
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107 /* 3B2s with WIN/3B have winsize defined in ptem.h */
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108 #if u3b2
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109 #define NEED_PTEM_H
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110 #endif /* u3b2 */
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111
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112 /* 3b2 does not have memmove, I'm told. */
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113 /* It is safe to have no parens around the args in the safe_bcopy call,
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114 and parens would screw up the prototype decl for memmove. */
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115 #define memmove(d, s, n) safe_bcopy (s, d, n)
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116
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117 /* This affects filemode.c. */
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118 #define NO_MODE_T
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