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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 /* Must use the system's termcap. It does special things. */
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54
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55 #define LIBS_TERMCAP "-ltermcap"
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56
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57 /* Define NO_REMAP if memory segmentation makes it not work well
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58 to change the boundary between the text section and data section
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59 when Emacs is dumped. If you define this, the preloaded Lisp
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60 code will not be sharable; but that's better than failing completely. */
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61
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62 /* #define NO_REMAP */
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63
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64 /* Right shift is logical shift.
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65 And the usual way of handling such machines, which involves
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66 copying the number into sign_extend_temp, does not work
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67 for reasons as yet unknown. */
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68
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69 #define XREALINT(a) sign_extend_lisp_int (a)
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70
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71 /* Convex uses a special version of unexec. */
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72
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73 #define UNEXEC "unexconvex.o"
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74
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75 /* you gotta define 'COFF' for post 6.1 unexec. */
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76
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77 #define COFF
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78 #define TEXT_START 0x80001000
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79
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80 /* Posix stuff for Convex OS 8.1 and up. */
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81
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82 #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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83
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84 #ifdef _POSIX_SOURCE
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85
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86 /* These symbols have been undefined to advance the state of the art. */
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87
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88 #define S_IFMT _S_IFMT
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89 #define S_IFDIR _S_IFDIR
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90
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91 #define S_IREAD _S_IREAD
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92 #define S_IWRITE _S_IWRITE
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93 #define S_IEXEC _S_IEXEC
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94
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95 #endif
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96
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97 /* Ptys may start below ptyp0; call a routine to hunt for where. */
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98
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99 #undef FIRST_PTY_LETTER
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100 #define FIRST_PTY_LETTER first_pty_letter()
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101
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102 #if 0
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103 /*
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104 * Force a K&R compilation and libraries with the Convex V 4.0 C compiler
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105 */
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106 #define C_SWITCH_MACHINE "-pcc"
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107 #define LIB_STANDARD "-lc_old"
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108 #define LIBS_MACHINE "-lC2_old"
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109 #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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110 #endif
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111
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112 /* Avoid error in xrdb.c - d.m.cooke@larc.nasa.gov. */
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113 #define DECLARE_GETPWUID_WITH_UID_T
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114
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115 /* Tested for both Convex C and GNUC by d.m.cooke@larc.nasa.gov. */
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116 #define LIBS_MACHINE "-lC2"
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117
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118 /* Avoid error in getloadavg.c. */
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119 #define NLIST_NAME_UNION 1
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120
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121 #if 0 /* This is supposed to be an improvement.
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122 It would be good for people to try enabling this code
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123 and report the results. */
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124 /* gcc -nostdlib prevents some math symbols from being included.
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125 So we have to use -nostartfiles instead. */
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126 #define LINKER "$(CC) -nostartfiles"
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127
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128 #define ORDINARY_LINK
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129
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130 #undef LD_SWITCH_MACHINE
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131 #define LD_SWITCH_MACHINE "-L /usr/lib '-A__iob=___ap$$iob' '-A_use_libc_sema=___ap$$use_libc_sema'"
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132 #endif
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