src/m/gould.h

   1 /* machine description file for Gould PowerNodes with UTX/32 2.0 and 2.1.
   2    (See MACHINES for older versions.)
   3
   4 * NOTE: If you are running a pre-release of UTX/32 2.1 you should #define
   5 * RELEASE2_1 in config.h. This may also be necessary with un-updated
   6 * official releases of 2.1
   7
   8    Copyright (C) 1986 Free Software Foundation, Inc.
   9
  10 This file is part of GNU Emacs.
  11
  12 GNU Emacs is free software; you can redistribute it and/or modify
  13 it under the terms of the GNU General Public License as published by
  14 the Free Software Foundation; either version 2, or (at your option)
  15 any later version.
  16
  17 GNU Emacs is distributed in the hope that it will be useful,
  18 but WITHOUT ANY WARRANTY; without even the implied warranty of
  19 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  20 GNU General Public License for more details.
  21
  22 You should have received a copy of the GNU General Public License
  23 along with GNU Emacs; see the file COPYING.  If not, write to
  24 the Free Software Foundation, 675 Mass Ave, Cambridge, MA 02139, USA.  */
  25
  26
  27 /* The following line tells the configuration script what sort of
  28    operating system this machine is likely to run.
  29    USUAL-OPSYS="note"
  30
  31 NOTE-START
  32 Gould Power Node (-machine=gould -opsystem=bsd4-2 or bsd4-3)
  33 (gould.h; s-bsd4-2.h or s-bsd4-3.h)
  34
  35   18.36 worked on versions 1.2 and 2.0 of the operating system.
  36
  37   On UTX/32 2.0, use -opsystem=bsd4-3
  38
  39   On UTX/32 1.2 and UTX/32S 1.0, use -opsystem=bsd4-2 and note that compiling
  40   lib-src/sorted-doc tickles a compiler bug:  remove the -g flag to cc in the
  41   makefile.
  42
  43   UTX/32 1.3 has a bug in the bcopy library routine.  Fix it by
  44   #undef BSTRING in gould.h.
  45
  46   Version 19 incorporates support for releases 2.1 and later of UTX/32.
  47   A site running a pre-release of 2.1 should #define RELEASE2_1 in config.h.
  48 NOTE-END */
  49
  50 /* The following three symbols give information on
  51  the size of various data types.  */
  52
  53 #define SHORTBITS 16            /* Number of bits in a short */
  54
  55 #define INTBITS 32              /* Number of bits in an int */
  56
  57 #define LONGBITS 32             /* Number of bits in a long */
  58
  59 /* Define WORDS_BIG_ENDIAN iff lowest-numbered byte in a word
  60    is the most significant byte.  */
  61
  62 #define WORDS_BIG_ENDIAN
  63
  64 /* Define NO_ARG_ARRAY if you cannot take the address of the first of a
  65  * group of arguments and treat it as an array of the arguments.  */
  66
  67 #define NO_ARG_ARRAY
  68
  69 /* Define WORD_MACHINE if addresses and such have
  70  * to be corrected before they can be used as byte counts.  */
  71
  72 /* #define WORD_MACHINE */
  73
  74 /* Now define a symbol for the cpu type, if your compiler
  75    does not define it automatically */
  76
  77 #ifndef GOULD
  78 #define GOULD
  79 #endif
  80
  81 /* sel is an old preprocessor name on gould machines
  82   - it is no longer needed and interferes with a variable in xmenu.c */
  83 #undef sel
  84
  85 /* Use type int rather than a union, to represent Lisp_Object */
  86 /* This is desirable for most machines.  */
  87
  88 #define NO_UNION_TYPE
  89
  90 /* Define EXPLICIT_SIGN_EXTEND if XINT must explicitly sign-extend
  91    the 24-bit bit field into an int.  In other words, if bit fields
  92    are always unsigned.
  93
  94    If you use NO_UNION_TYPE, this flag does not matter.  */
  95
  96 #define EXPLICIT_SIGN_EXTEND
  97
  98 /* Data type of load average, as read out of kmem.  */
  99
 100 #define LOAD_AVE_TYPE double
 101
 102 /* Convert that into an integer that is 100 for a load average of 1.0  */
 103
 104 #define LOAD_AVE_CVT(x) (int) (((double) (x)) * 100.0)
 105
 106 /* Define CANNOT_DUMP on machines where unexec does not work.
 107    Then the function dump-emacs will not be defined
 108    and temacs will do (load "loadup") automatically unless told otherwise.  */
 109
 110 /* #define CANNOT_DUMP */
 111
 112 /* Define VIRT_ADDR_VARIES if the virtual addresses of
 113    pure and impure space as loaded can vary, and even their
 114    relative order cannot be relied on.
 115
 116    Otherwise Emacs assumes that text space precedes data space,
 117    numerically.  */
 118
 119 #define VIRT_ADDR_VARIES
 120
 121 /* Define C_ALLOCA if this machine does not support a true alloca
 122    and the one written in C should be used instead.
 123    Define HAVE_ALLOCA to say that the system provides a properly
 124    working alloca function and it should be used.
 125    Define neither one if an assembler-language alloca
 126    in the file alloca.s should be used.  */
 127
 128 #define C_ALLOCA
 129 #define STACK_DIRECTION -1  /* grows towards lower addresses on Gould UTX/32 */
 130
 131 /* No need to extend the user stack. */
 132
 133 /* If this is a 2.1 system, COFF will be predefined by cpp. If it's */
 134 /* pre-2.1 COFF won't be defined, which is as it should be. */
 135
 136 #ifdef COFF
 137
 138 #define HEADER_INCL_IN_TEXT
 139 #define COFF_BSD_SYMBOLS
 140
 141 /* Seems to be necessary with coff */
 142 #define NO_REMAP
 143
 144 #ifndef GOULD_NP1
 145 /* gould-np1.h includes this file */
 146 /* keep the old value - don't skip over the headers */
 147 #define KEEP_OLD_TEXT_SCNPTR
 148 #define KEEP_OLD_PADDR
 149 #ifndef RELEASE2_1
 150 #define ADJUST_TEXTBASE
 151 #endif /*RELEASE2_1*/
 152 #endif /* GOULD_NP1 */
 153
 154 #ifdef IN_UNEXEC
 155 /* make Gould NP and PN COFF look like USG COFF */
 156 /* PN COFF */
 157 #define aouthdr old_exec
 158 /* PN COFF doesn't have a data_start or a_dtbase field in its */
 159 /* optional header, so substitute a junk field */
 160 #define a_dtbase a_ccvers
 161 /* Gould COFF */
 162 #define magic a_magic
 163 #define tsize a_text
 164 #define dsize a_data
 165 #define bsize a_bss
 166 #define entry a_entry
 167 #define text_start a_txbase
 168 #define data_start a_dtbase
 169 #endif /* IN_UNEXEC */
 170
 171 /* Define how to search all pty names.
 172  * This is for UTX 2.1 and greater on PN and all NP versions. It is only
 173  * accident that this happens to correspond to the same versions of UTX
 174  * as COFF does, but we'll take advantage of that here.
 175  */
 176
 177 /*#define USE_PTY_PAIR*/
 178
 179 #endif /* COFF */
 180
 181 /* -g is sometimes broken on the Gould.  */
 182
 183 #define C_DEBUG_SWITCH
 184
 185 /* Comparing pointers as unsigned ints tickles a bug in older compilers.  */
 186
 187 #define PNTR_COMPARISON_TYPE int
 188
 189 /* The GOULD machine counts the a.out file header as part of the text.  */
 190
 191 #define A_TEXT_OFFSET(HDR) sizeof (HDR)
 192
 193 /* Machine-dependent action when about to dump an executable file.  */
 194
 195 #ifndef COFF
 196 #define ADJUST_EXEC_HEADER   \
 197   unexec_text_start = hdr.a_txbase + sizeof (hdr);
 198 #endif
 199
 200 /* We use the system's crt0.o.  Somehow it avoids losing
 201    with `environ' the way most standard crt0.o's do.  */
 202
 203 #define START_FILES pre-crt0.o /lib/crt0.o