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428
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1 /* machine description file for Convex (all models).
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2 Copyright (C) 1987, 1994 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="bsd4-3" */
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26
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27 /* Now define a symbol for the cpu type, if your compiler
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28 does not define it automatically. */
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29 #ifndef convex /* The compiler doesn't always do this. */
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30 #define convex
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31 #endif
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32
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33 #ifndef __GNUC__ /* David M. Cooke <dcooke@haven.larc.nasa.gov>
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34 and Ralph Sobek <Ralph.Sobek@cerfacs.fr> agree
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35 must ignore one arg when compiled with convex compiler. */
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36 #define CRT0_DUMMIES ignore,
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37 #else
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38 #define CRT0_DUMMIES
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39 #endif
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40
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41 /* crt0.c should define a symbol `start' and do .globl with a dot. */
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42
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43 #define DOT_GLOBAL_START
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44
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45 /* Data type of load average, as read out of kmem. */
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46
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47 #define LOAD_AVE_TYPE double
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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) ((x) * 100.0)
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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
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57 /* #define CANNOT_DUMP */
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58
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59 /* Define C_ALLOCA if this machine does not support a true alloca
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60 and the one written in C should be used instead.
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61 Define HAVE_ALLOCA to say that the system provides a properly
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62 working alloca function and it should be used.
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63 Define neither one if an assembler-language alloca
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64 in the file alloca.s should be used. */
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65
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66 /* #define C_ALLOCA */
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67 #define HAVE_ALLOCA
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68
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69 /* Must use the system's termcap. It does special things. */
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70
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71 #define LIBS_TERMCAP "-ltermcap"
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72
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73 /* Define NO_REMAP if memory segmentation makes it not work well
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74 to change the boundary between the text section and data section
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75 when Emacs is dumped. If you define this, the preloaded Lisp
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76 code will not be sharable; but that's better than failing completely. */
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77
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78 /* #define NO_REMAP */
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79
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80 /* Right shift is logical shift.
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81 And the usual way of handling such machines, which involves
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82 copying the number into sign_extend_temp, does not work
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83 for reasons as yet unknown. */
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84
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85 #define XREALINT(a) sign_extend_lisp_int (a)
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86
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87 /* Convex uses a special version of unexec. */
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88
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89 #define UNEXEC "unexconvex.o"
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90
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91 /* you gotta define 'COFF' for post 6.1 unexec. */
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92
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93 #define COFF
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94 #define TEXT_START 0x80001000
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95
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96 /* Posix stuff for Convex OS 8.1 and up. */
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97
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98 #define LD_SWITCH_MACHINE "-e__start -L /usr/lib '-A__iob=___ap$$iob' '-A_use_libc_sema=___ap$$use_libc_sema'"
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99
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100 #ifdef _POSIX_SOURCE
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101
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102 /* These symbols have been undefined to advance the state of the art. */
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103
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104 #define S_IFMT _S_IFMT
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105 #define S_IFDIR _S_IFDIR
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106
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107 #define S_IREAD _S_IREAD
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108 #define S_IWRITE _S_IWRITE
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109 #define S_IEXEC _S_IEXEC
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110
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111 #endif
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112
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113 /* Ptys may start below ptyp0; call a routine to hunt for where. */
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114
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115 #undef FIRST_PTY_LETTER
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116 #define FIRST_PTY_LETTER first_pty_letter()
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117
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118 #if 0
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119 /*
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120 * Force a K&R compilation and libraries with the Convex V 4.0 C compiler
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121 */
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122 #define C_SWITCH_MACHINE "-pcc"
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123 #define LIB_STANDARD "-lc_old"
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124 #define LIBS_MACHINE "-lC2_old"
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125 #define LD_SWITCH_MACHINE "-X -NL -fn -Enoposix -A__iob=___ap\$$iob -A_use_libc_sema=___ap\$$use_libc_sema -L /usr/lib"
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126 #endif
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127
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128 /* Avoid error in xrdb.c - d.m.cooke@larc.nasa.gov. */
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129 #define DECLARE_GETPWUID_WITH_UID_T
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130
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131 /* Tested for both Convex C and GNUC by d.m.cooke@larc.nasa.gov. */
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132 #define LIBS_MACHINE "-lC2"
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133
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134 /* Avoid error in getloadavg.c. */
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135 #define NLIST_NAME_UNION 1
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136
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137 #if 0 /* This is supposed to be an improvement.
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138 It would be good for people to try enabling this code
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139 and report the results. */
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140 /* gcc -nostdlib prevents some math symbols from being included.
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141 So we have to use -nostartfiles instead. */
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142 #define LINKER "$(CC) -nostartfiles"
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143
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144 #define ORDINARY_LINK
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145
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146 #undef LD_SWITCH_MACHINE
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147 #define LD_SWITCH_MACHINE "-L /usr/lib '-A__iob=___ap$$iob' '-A_use_libc_sema=___ap$$use_libc_sema'"
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148 #endif
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