code.delx.au - gnu-emacs/blob - src/m/hp9000s300.h

   1 /* machine description file for hp9000 series 200 or 300 on either HPUX or BSD.
   2    Copyright (C) 1985, 2002 Free Software Foundation, Inc.
   3
   4 This file is part of GNU Emacs.
   5
   6 GNU Emacs is free software; you can redistribute it and/or modify
   7 it under the terms of the GNU General Public License as published by
   8 the Free Software Foundation; either version 2, or (at your option)
   9 any later version.
  10
  11 GNU Emacs is distributed in the hope that it will be useful,
  12 but WITHOUT ANY WARRANTY; without even the implied warranty of
  13 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  14 GNU General Public License for more details.
  15
  16 You should have received a copy of the GNU General Public License
  17 along with GNU Emacs; see the file COPYING.  If not, write to
  18 the Free Software Foundation, Inc., 59 Temple Place - Suite 330,
  19 Boston, MA 02111-1307, USA.  */
  20
  21
  22 /* The following line tells the configuration script what sort of
  23    operating system this machine is likely to run.
  24    USUAL-OPSYS="note"
  25
  26 NOTE-START
  27 HP 9000 series 200 or 300 (-machine=hp9000s300)
  28
  29   These machines are 68000-series CPUs running HP-UX
  30   (a derivative of sysV with some BSD features) or BSD 4.3 ported by Utah.
  31
  32   If you're running HP-UX, specify `-opsystem=hpux'.
  33   If you're running BSD, specify `-opsystem=bsd4-3'.
  34 NOTE-END */
  35
  36 /* I don't understand why we have to do this at all!  -JimB */
  37 #if 0
  38
  39 /* Do this here at the top of the file; including sys/wait.h may
  40    include <endian.h>, which defines BIG_ENDIAN, which will conflict
  41    with our definition of BIG_ENDIAN if we do this at the bottom.  */
  42 #ifndef NOT_C_CODE
  43 #ifndef NO_SHORTNAMES
  44 #include <sys/wait.h>
  45 #define WAITTYPE int
  46 #endif
  47 #define WRETCODE(w) (((w) >> 8) & 0377)
  48 #endif
  49
  50 #endif
  51
  52 /* Define NOMULTIPLEJOBS on versions of HPUX before 6.5.  */
  53
  54 /* #define NOMULTIPLEJOBS */
  55
  56 /* Define this symbol if you are running a version of HP-UX
  57    which predates version 6.01 */
  58
  59 /* #define HPUX_5 */
  60
  61 /* Define WORDS_BIG_ENDIAN iff lowest-numbered byte in a word
  62    is the most significant byte.  */
  63
  64 #define WORDS_BIG_ENDIAN
  65
  66 /* Define NO_ARG_ARRAY if you cannot take the address of the first of a
  67  * group of arguments and treat it as an array of the arguments.  */
  68
  69 /* #define NO_ARG_ARRAY */
  70
  71 /* Define WORD_MACHINE if addresses and such have
  72  * to be corrected before they can be used as byte counts.  */
  73
  74 /* #define WORD_MACHINE */
  75
  76 /* Now define a symbol for the cpu type, if your compiler
  77    does not define it automatically.  */
  78
  79 #ifndef hp9000s300
  80 #define hp9000s300
  81 #endif
  82
  83 /* Use type int rather than a union, to represent Lisp_Object */
  84 /* This is desirable for most machines.  */
  85
  86 #define NO_UNION_TYPE
  87
  88 /* Define EXPLICIT_SIGN_EXTEND if XINT must explicitly sign-extend
  89    the 24-bit bit field into an int.  In other words, if bit fields
  90    are always unsigned.
  91
  92    If you use NO_UNION_TYPE, this flag does not matter.  */
  93
  94 #define EXPLICIT_SIGN_EXTEND
  95
  96 /* Define CANNOT_DUMP on machines where unexec does not work.
  97    Then the function dump-emacs will not be defined
  98    and temacs will do (load "loadup") automatically unless told otherwise.  */
  99
 100 /* #define CANNOT_DUMP */
 101
 102 /* Define VIRT_ADDR_VARIES if the virtual addresses of
 103    pure and impure space as loaded can vary, and even their
 104    relative order cannot be relied on.
 105
 106    Otherwise Emacs assumes that text space precedes data space,
 107    numerically.  */
 108
 109 /* #define VIRT_ADDR_VARIES */
 110 \f
 111 /* For University of Utah 4.3bsd implementation on HP300s.
 112    The #ifndef __GNUC__ definitions are required for the "standard" cc,
 113    a very old, brain-dead version of PCC. */
 114
 115 #ifdef BSD4_3
 116
 117 /* Tell crt0.c that this is an ordinary 68020.  */
 118 #undef hp9000s300
 119 #define m68000
 120
 121 #define CRT0_DUMMIES            bogus_a6,
 122
 123 #ifndef __GNUC__
 124 #define LIBS_DEBUG              /* don't have -lg that works */
 125 #define C_DEBUG_SWITCH          /* don't support -g */
 126 #endif
 127
 128 #undef LOAD_AVE_TYPE
 129 #undef LOAD_AVE_CVT
 130 #define LOAD_AVE_TYPE long
 131 #define LOAD_AVE_CVT(x) ((int) (((double) (x)) / 2048.0 * 100.0))
 132
 133 #endif /* BSD4_3 */
 134 \f
 135 #ifndef BSD4_3
 136 /* The following definitions are for HPUX only.  */
 137
 138 /* The symbol in the kernel where the load average is found
 139    is named _avenrun on this machine.  */
 140
 141 #define LDAV_SYMBOL "_avenrun"
 142
 143 /* Data type of load average, as read out of kmem.  */
 144
 145 #define LOAD_AVE_TYPE double
 146
 147 /* Convert that into an integer that is 100 for a load average of 1.0  */
 148
 149 #define LOAD_AVE_CVT(x) ((int) ((x) * 100.0))
 150
 151 /* This library is needed with -g, on the 200/300 only.  */
 152
 153 #if !defined(__GNUC__) || defined(__HPUX_ASM__)
 154 #define LIBS_DEBUG /usr/lib/end.o
 155 #endif
 156
 157 /* Need a TEXT_START.  On the HP9000/s300 that is 0.  */
 158 #ifdef __GNUC__
 159 #define TEXT_START   0
 160 #endif
 161
 162 /* The symbol FIONREAD is defined, but the feature does not work
 163    on the 200/300.  */
 164
 165 #define BROKEN_FIONREAD
 166
 167 /* In older versions of hpux, for unknown reasons, S_IFLNK is defined
 168    even though symbolic links do not exist.
 169    Make sure our conditionals based on S_IFLNK are not confused.
 170
 171    Here we assume that stat.h is included before config.h
 172    so that we can override it here.
 173
 174    Version 6 of HP-UX has symbolic links.  */
 175
 176 #ifdef HPUX_5
 177 #undef S_IFLNK
 178 #endif
 179
 180 /* Define the BSTRING functions in terms of the sysV functions.
 181    Version 6 of HP-UX supplies these in the BSD library,
 182    but that library has reported bugs in `signal'.  */
 183
 184 /* #ifdef HPUX_5 */
 185 #define bcopy(a,b,s)    memcpy (b,a,s)
 186 #define bzero(a,s)      memset (a,0,s)
 187 #define bcmp            memcmp
 188 /* #endif */
 189
 190 /* On USG systems these have different names.
 191    Version 6 of HP-UX supplies these in the BSD library,
 192    which we currently want to avoid using.  */
 193
 194 /* #ifdef HPUX_5 */
 195 #define index strchr
 196 #define rindex strrchr
 197 /* #endif */
 198
 199 /* Define C_SWITCH_MACHINE to be +X if you want the s200/300
 200  * Emacs to run on both 68010 and 68020 based hp-ux's.
 201  *
 202  * Define OLD_HP_ASSEMBLER if you have an ancient assembler
 203  *
 204  * Define HPUX_68010 if you are using the new assembler but
 205  * compiling for a s200 (upgraded) or s310.  68010 based
 206  * processor without 68881.
 207  */
 208
 209 /* These switches increase the size of some internal C compiler tables.
 210    They are required for compiling the X11 interface files. */
 211
 212 #ifndef HPUX_5
 213 #ifndef __GNUC__
 214 #define C_SWITCH_MACHINE -Wc,-Nd4000,-Ns3000
 215 #endif
 216 #endif
 217
 218 /* Define NEED_BSDTTY if you have such. */
 219
 220 #ifndef NOMULTIPLEJOBS
 221 #define NEED_BSDTTY
 222 #endif
 223
 224 #endif /* not BSD4_3 */