src/m/ia64.h

   1 /* machine description file for the IA-64 architecture.
   2    Copyright (C) 2000, 2002, 2003, 2004, 2005,
   3                  2006 Free Software Foundation, Inc.
   4      Contributed by David Mosberger <davidm@hpl.hp.com>
   5
   6 This file is part of GNU Emacs.
   7
   8 GNU Emacs is free software; you can redistribute it and/or modify
   9 it under the terms of the GNU General Public License as published by
  10 the Free Software Foundation; either version 2, or (at your option)
  11 any later version.
  12
  13 GNU Emacs is distributed in the hope that it will be useful,
  14 but WITHOUT ANY WARRANTY; without even the implied warranty of
  15 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  16 GNU General Public License for more details.
  17
  18 You should have received a copy of the GNU General Public License
  19 along with GNU Emacs; see the file COPYING.  If not, write to
  20 the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
  21 Boston, MA 02110-1301, USA.  */
  22
  23 #define BITS_PER_LONG           64
  24 #define BITS_PER_EMACS_INT      64
  25
  26 /* Define WORDS_BIG_ENDIAN iff lowest-numbered byte in a word
  27    is the most significant byte.  */
  28
  29 #undef WORDS_BIG_ENDIAN
  30
  31 /* Define NO_ARG_ARRAY if you cannot take the address of the first of a
  32    group of arguments and treat it as an array of the arguments.  */
  33
  34 #define NO_ARG_ARRAY
  35
  36 /* Define WORD_MACHINE if addresses and such have
  37    to be corrected before they can be used as byte counts.  */
  38
  39 /* #define WORD_MACHINE */
  40
  41 /* Now define a symbol for the cpu type, if your compiler
  42    does not define it automatically:
  43    Ones defined so far include vax, m68000, ns16000, pyramid,
  44    orion, tahoe, APOLLO and many others */
  45
  46 /* __ia64__ defined automatically */
  47
  48
  49 /* Use type EMACS_INT rather than a union, to represent Lisp_Object */
  50 /* This is desirable for most machines.  */
  51
  52 #define NO_UNION_TYPE
  53
  54 /* Define the type to use.  */
  55 #define EMACS_INT               long
  56 #define EMACS_UINT              unsigned long
  57 #define SPECIAL_EMACS_INT
  58
  59 /* Define EXPLICIT_SIGN_EXTEND if XINT must explicitly sign-extend
  60    the 24-bit bit field into an int.  In other words, if bit fields
  61    are always unsigned.
  62
  63    If you use NO_UNION_TYPE, this flag does not matter.  */
  64
  65 #define EXPLICIT_SIGN_EXTEND
  66
  67 /* Data type of load average, as read out of kmem.  */
  68
  69 #define LOAD_AVE_TYPE           long
  70
  71 /* Convert that into an integer that is 100 for a load average of 1.0  */
  72
  73 #define LOAD_AVE_CVT(x) (int) (((double) (x)) * 100.0 / FSCALE)
  74
  75 /* Define CANNOT_DUMP on machines where unexec does not work.
  76    Then the function dump-emacs will not be defined
  77    and temacs will do (load "loadup") automatically unless told otherwise.  */
  78 #if 0
  79 #define CANNOT_DUMP
  80 #endif
  81
  82 /* Define VIRT_ADDR_VARIES if the virtual addresses of
  83    pure and impure space as loaded can vary, and even their
  84    relative order cannot be relied on.
  85
  86    Otherwise Emacs assumes that text space precedes data space,
  87    numerically.  */
  88
  89 /* #define VIRT_ADDR_VARIES */
  90
  91 /* Define the following if GNU malloc and the relocating allocator do
  92    not work together with X.  */
  93
  94 /* #define SYSTEM_MALLOC */
  95
  96 /* Define NO_REMAP if memory segmentation makes it not work well
  97    to change the boundary between the text section and data section
  98    when Emacs is dumped.  If you define this, the preloaded Lisp
  99    code will not be sharable; but that's better than failing completely.  */
 100
 101 /* #define NO_REMAP */
 102
 103 /* Some really obscure 4.2-based systems (like Sequent DYNIX) do not
 104    support asynchronous I/O (using SIGIO) on sockets, even though it
 105    works fine on tty's.  If you have one of these systems, define the
 106    following, and then use it in config.h (or elsewhere) to decide
 107    when (not) to use SIGIO.
 108
 109    You'd think this would go in an operating-system description file,
 110    but since it only occurs on some, but not all, BSD systems, the
 111    reasonable place to select for it is in the machine description
 112    file.  */
 113
 114 /* #define NO_SOCK_SIGIO */
 115
 116 #ifdef __ELF__
 117 #undef UNEXEC
 118 #define UNEXEC unexelf.o
 119 #endif
 120
 121 #define PNTR_COMPARISON_TYPE unsigned long
 122
 123 #ifndef NOT_C_CODE
 124
 125 #ifdef REL_ALLOC
 126 #ifndef _MALLOC_INTERNAL
 127 /* "char *" because ralloc.c defines it that way.  gmalloc.c thinks it
 128    is allowed to prototype these as "void *" so we don't prototype in
 129    that case.  You're right: it stinks!  */
 130 extern char *r_alloc (), *r_re_alloc ();
 131 extern void r_alloc_free ();
 132 #endif /* not _MALLOC_INTERNAL */
 133 #endif /* REL_ALLOC */
 134
 135 #endif /* not NOT_C_CODE */
 136
 137 #define HAVE_TEXT_START
 138
 139 /* arch-tag: 9b8e9fb2-2e49-4c22-b68f-11a488e77c66
 140    (do not change this comment) */