src/m/sr2k.h

   1 /* machine description file for Hitachi SR2001/SR2201 machines.
   2    Copyright (C) 1996, 2001, 2002, 2003, 2004, 2005,
   3                  2006, 2007  Free Software Foundation, Inc.
   4
   5 This file is part of GNU Emacs.
   6
   7 GNU Emacs is free software; you can redistribute it and/or modify
   8 it under the terms of the GNU General Public License as published by
   9 the Free Software Foundation; either version 3, or (at your option)
  10 any later version.
  11
  12 GNU Emacs is distributed in the hope that it will be useful,
  13 but WITHOUT ANY WARRANTY; without even the implied warranty of
  14 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  15 GNU General Public License for more details.
  16
  17 You should have received a copy of the GNU General Public License
  18 along with GNU Emacs; see the file COPYING.  If not, write to
  19 the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
  20 Boston, MA 02110-1301, USA.  */
  21
  22
  23 /* The following line tells the configuration script what sort of
  24    operating system this machine is likely to run.
  25    USUAL-OPSYS="hpux"  */
  26
  27 /* Define WORDS_BIG_ENDIAN if lowest-numbered byte in a word
  28    is the most significant byte.  */
  29
  30 #define WORDS_BIG_ENDIAN
  31
  32 /* Define NO_ARG_ARRAY if you cannot take the address of the first of a
  33  * group of arguments and treat it as an array of the arguments.  */
  34
  35 #define NO_ARG_ARRAY
  36
  37 /* Define WORD_MACHINE if addresses and such have
  38  * to be corrected before they can be used as byte counts.  */
  39
  40 #undef WORD_MACHINE
  41
  42 /* Now define a symbol for the cpu type, if your compiler
  43    does not define it automatically:
  44    Ones defined so far include vax, m68000, ns16000, pyramid,
  45    orion, tahoe, APOLLO and many others */
  46 #ifndef hp9000s800
  47 #       define hp9000s800
  48 #endif
  49
  50 /* Use type int rather than a union, to represent Lisp_Object */
  51 /* This is desirable for most machines.  */
  52
  53 #define NO_UNION_TYPE
  54
  55 /* Define EXPLICIT_SIGN_EXTEND if XINT must explicitly sign-extend
  56    the bit field into an int.  In other words, if bit fields
  57    are always unsigned.
  58
  59    If you use NO_UNION_TYPE, this flag does not matter.  */
  60
  61 #define EXPLICIT_SIGN_EXTEND
  62
  63 /* The standard definitions of these macros would work ok,
  64    but these are faster because the constants are short. */
  65
  66
  67 #define XUINT(a) (((unsigned)(a) << BITS_PER_INT-VALBITS) >> BITS_PER_INT-VALBITS)
  68
  69 #define XSET(var, type, ptr) \
  70    ((var) = ((int)(type) << VALBITS) + (((unsigned) (ptr) << BITS_PER_INT-VALBITS) >> BITS_PER_INT-VALBITS))
  71 \f
  72 /* #ifdef __hpux */
  73 /* Now define a symbol for the cpu type, if your compiler
  74    does not define it automatically:
  75    Ones defined so far include vax, m68000, ns16000, pyramid,
  76    orion, tahoe, APOLLO and many others */
  77
  78 #ifndef hp9000s800
  79 #     define hp9000s800
  80 #endif
  81
  82
  83 /* Data type of load average, as read out of kmem.  */
  84
  85 #define LOAD_AVE_TYPE double
  86
  87 /* Convert that into an integer that is 100 for a load average of 1.0  */
  88
  89 #define LOAD_AVE_CVT(x) ((int) (x * 100.0))
  90
  91
  92 /* Define CANNOT_DUMP on machines where unexec does not work.
  93    Then the function dump-emacs will not be defined
  94    and temacs will do (load "loadup") automatically unless told otherwise.  */
  95
  96 #undef CANNOT_DUMP
  97
  98 /* Define VIRT_ADDR_VARIES if the virtual addresses of
  99    pure and impure space as loaded can vary, and even their
 100    relative order cannot be relied on.
 101
 102    Otherwise Emacs assumes that text space precedes data space,
 103    numerically.  */
 104
 105 #define VIRT_ADDR_VARIES
 106 \f
 107 /* the data segment on this machine always starts at address 0x40000000. */
 108
 109 #define DATA_SEG_BITS 0x40000000
 110
 111 #define DATA_START    0x40000000
 112 #define TEXT_START    0x00000000
 113
 114 /* Define NO_REMAP if memory segmentation makes it not work well
 115    to change the boundary between the text section and data section
 116    when Emacs is dumped.  If you define this, the preloaded Lisp
 117    code will not be sharable; but that's better than failing completely.  */
 118
 119 #define NO_REMAP
 120
 121 /* This machine requires completely different unexec code
 122    which lives in a separate file.  Specify the file name.  */
 123
 124 #define UNEXEC unexhp9k800.o
 125
 126 #define LIBS_MACHINE
 127 #define LIBS_DEBUG
 128
 129 /* Include the file bsdtty.h, since this machine has job control.  */
 130 /* #define NEED_BSDTTY */
 131 \f
 132 /* The symbol in the kernel where the load average is found
 133    is named _avenrun.  At this time there are two major flavors
 134    of hp-ux (there is the s800 and s300 (s200) flavors).  The
 135    differences are thusly moved to the corresponding machine description file.
 136 */
 137
 138 /* no underscore please */
 139 #define LDAV_SYMBOL "avenrun"
 140
 141 #if 0   /* Supposedly no longer true.  */
 142 /* In hpux, for unknown reasons, S_IFLNK is defined even though
 143    symbolic links do not exist.
 144    Make sure our conditionals based on S_IFLNK are not confused.
 145
 146    Here we assume that stat.h is included before config.h
 147    so that we can override it here.  */
 148
 149 #undef S_IFLNK
 150 #endif
 151
 152 /* On USG systems these have different names. */
 153
 154 #define index strchr
 155 #define rindex strrchr
 156
 157 /* #endif */
 158
 159 /* arch-tag: 4ced5b51-ffe6-4be1-9954-eb40657023a5
 160    (do not change this comment) */