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, Inc., 59 Temple Place - Suite 330,
  25 Boston, MA 02111-1307, USA.  */
  26
  27
  28 /* The following line tells the configuration script what sort of
  29    operating system this machine is likely to run.
  30    USUAL-OPSYS="note"
  31
  32 NOTE-START
  33 Gould Power Node (-machine=gould -opsystem=bsd4-2 or bsd4-3)
  34 (gould.h; s-bsd4-2.h or s-bsd4-3.h)
  35
  36   18.36 worked on versions 1.2 and 2.0 of the operating system.
  37
  38   On UTX/32 2.0, use -opsystem=bsd4-3
  39
  40   On UTX/32 1.2 and UTX/32S 1.0, use -opsystem=bsd4-2 and note that compiling
  41   lib-src/sorted-doc tickles a compiler bug:  remove the -g flag to cc in the
  42   makefile.
  43
  44   UTX/32 1.3 has a bug in the bcopy library routine.  Fix it by
  45   #undef BSTRING in gould.h.
  46
  47   Version 19 incorporates support for releases 2.1 and later of UTX/32.
  48   A site running a pre-release of 2.1 should #define RELEASE2_1 in config.h.
  49 NOTE-END */
  50
  51 /* Define WORDS_BIG_ENDIAN iff lowest-numbered byte in a word
  52    is the most significant byte.  */
  53
  54 #define WORDS_BIG_ENDIAN
  55
  56 /* Define NO_ARG_ARRAY if you cannot take the address of the first of a
  57  * group of arguments and treat it as an array of the arguments.  */
  58
  59 #define NO_ARG_ARRAY
  60
  61 /* Define WORD_MACHINE if addresses and such have
  62  * to be corrected before they can be used as byte counts.  */
  63
  64 /* #define WORD_MACHINE */
  65
  66 /* Now define a symbol for the cpu type, if your compiler
  67    does not define it automatically */
  68
  69 #ifndef GOULD
  70 #define GOULD
  71 #endif
  72
  73 /* sel is an old preprocessor name on gould machines
  74   - it is no longer needed and interferes with a variable in xmenu.c */
  75 #undef sel
  76
  77 /* Use type int rather than a union, to represent Lisp_Object */
  78 /* This is desirable for most machines.  */
  79
  80 #define NO_UNION_TYPE
  81
  82 /* Define EXPLICIT_SIGN_EXTEND if XINT must explicitly sign-extend
  83    the 24-bit bit field into an int.  In other words, if bit fields
  84    are always unsigned.
  85
  86    If you use NO_UNION_TYPE, this flag does not matter.  */
  87
  88 #define EXPLICIT_SIGN_EXTEND
  89
  90 /* Data type of load average, as read out of kmem.  */
  91
  92 #define LOAD_AVE_TYPE double
  93
  94 /* Convert that into an integer that is 100 for a load average of 1.0  */
  95
  96 #define LOAD_AVE_CVT(x) (int) (((double) (x)) * 100.0)
  97
  98 /* Define CANNOT_DUMP on machines where unexec does not work.
  99    Then the function dump-emacs will not be defined
 100    and temacs will do (load "loadup") automatically unless told otherwise.  */
 101
 102 /* #define CANNOT_DUMP */
 103
 104 /* Define VIRT_ADDR_VARIES if the virtual addresses of
 105    pure and impure space as loaded can vary, and even their
 106    relative order cannot be relied on.
 107
 108    Otherwise Emacs assumes that text space precedes data space,
 109    numerically.  */
 110
 111 #define VIRT_ADDR_VARIES
 112
 113 /* Define C_ALLOCA if this machine does not support a true alloca
 114    and the one written in C should be used instead.
 115    Define HAVE_ALLOCA to say that the system provides a properly
 116    working alloca function and it should be used.
 117    Define neither one if an assembler-language alloca
 118    in the file alloca.s should be used.  */
 119
 120 #define C_ALLOCA
 121 #define STACK_DIRECTION -1  /* grows towards lower addresses on Gould UTX/32 */
 122
 123 /* No need to extend the user stack. */
 124
 125 /* If this is a 2.1 system, COFF will be predefined by cpp. If it's */
 126 /* pre-2.1 COFF won't be defined, which is as it should be. */
 127
 128 #ifdef COFF
 129
 130 #define HEADER_INCL_IN_TEXT
 131 #define COFF_BSD_SYMBOLS
 132
 133 /* Seems to be necessary with coff */
 134 #define NO_REMAP
 135
 136 #ifndef GOULD_NP1
 137 /* gould-np1.h includes this file */
 138 /* keep the old value - don't skip over the headers */
 139 #define KEEP_OLD_TEXT_SCNPTR
 140 #define KEEP_OLD_PADDR
 141 #ifndef RELEASE2_1
 142 #define ADJUST_TEXTBASE
 143 #endif /*RELEASE2_1*/
 144 #endif /* GOULD_NP1 */
 145
 146 #ifdef IN_UNEXEC
 147 /* make Gould NP and PN COFF look like USG COFF */
 148 /* PN COFF */
 149 #define aouthdr old_exec
 150 /* PN COFF doesn't have a data_start or a_dtbase field in its */
 151 /* optional header, so substitute a junk field */
 152 #define a_dtbase a_ccvers
 153 /* Gould COFF */
 154 #define magic a_magic
 155 #define tsize a_text
 156 #define dsize a_data
 157 #define bsize a_bss
 158 #define entry a_entry
 159 #define text_start a_txbase
 160 #define data_start a_dtbase
 161 #endif /* IN_UNEXEC */
 162
 163 /* Define how to search all pty names.
 164  * This is for UTX 2.1 and greater on PN and all NP versions. It is only
 165  * accident that this happens to correspond to the same versions of UTX
 166  * as COFF does, but we'll take advantage of that here.
 167  */
 168
 169 /*#define USE_PTY_PAIR*/
 170
 171 #endif /* COFF */
 172
 173 /* -g is sometimes broken on the Gould.  */
 174
 175 #define C_DEBUG_SWITCH
 176
 177 /* Comparing pointers as unsigned ints tickles a bug in older compilers.  */
 178
 179 #define PNTR_COMPARISON_TYPE int
 180
 181 /* The GOULD machine counts the a.out file header as part of the text.  */
 182
 183 #define A_TEXT_OFFSET(HDR) sizeof (HDR)
 184
 185 /* Machine-dependent action when about to dump an executable file.  */
 186
 187 #ifndef COFF
 188 #define ADJUST_EXEC_HEADER   \
 189   unexec_text_start = hdr.a_txbase + sizeof (hdr);
 190 #endif
 191
 192 /* We use the system's crt0.o.  Somehow it avoids losing
 193    with `environ' the way most standard crt0.o's do.  */
 194
 195 #define START_FILES pre-crt0.o /lib/crt0.o