src/m/amdx86-64.h

   1 /* machine description file for AMD x86-64.
   2    Copyright (C) 2002, 2003, 2004, 2005, 2006, 2007, 2008
   3      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 #ifdef i386
  23 /* Although we're running on an amd64 kernel, we're actually compiling for
  24    the x86 architecture.  The user should probably have provided an
  25    explicit --build to `configure', but if everything else than the kernel
  26    is running in i386 mode, then the bug is really ours: we should have
  27    guessed better.  */
  28 #include "m/intel386.h"
  29 #else
  30
  31 /* The following line tells the configuration script what sort of
  32    operating system this machine is likely to run.
  33    USUAL-OPSYS="linux"  */
  34
  35 #define BITS_PER_LONG           64
  36 #define BITS_PER_EMACS_INT      64
  37
  38 /* Define WORDS_BIG_ENDIAN if lowest-numbered byte in a word
  39    is the most significant byte.  */
  40
  41 #undef WORDS_BIG_ENDIAN
  42
  43 /* Define NO_ARG_ARRAY if you cannot take the address of the first of a
  44  * group of arguments and treat it as an array of the arguments.  */
  45
  46 #define NO_ARG_ARRAY
  47
  48 /* Define WORD_MACHINE if addresses and such have
  49  * to be corrected before they can be used as byte counts.  */
  50
  51 /* #define WORD_MACHINE */
  52
  53 /* Now define a symbol for the cpu type, if your compiler
  54    does not define it automatically:
  55    Ones defined so far include vax, m68000, ns16000, pyramid,
  56    orion, tahoe, APOLLO and many others */
  57 /* __x86_64 defined automatically.  */
  58
  59 /* Use type int rather than a union, to represent Lisp_Object */
  60 /* This is desirable for most machines.  */
  61
  62 #define NO_UNION_TYPE
  63
  64 /* Define the type to use.  */
  65 #define EMACS_INT               long
  66 #define EMACS_UINT              unsigned long
  67 #define SPECIAL_EMACS_INT
  68
  69 /* Define EXPLICIT_SIGN_EXTEND if XINT must explicitly sign-extend
  70    the 24-bit bit field into an int.  In other words, if bit fields
  71    are always unsigned.
  72
  73    If you use NO_UNION_TYPE, this flag does not matter.  */
  74
  75 #define EXPLICIT_SIGN_EXTEND
  76
  77 /* Data type of load average, as read out of kmem.  */
  78
  79 #define LOAD_AVE_TYPE long
  80
  81 /* Convert that into an integer that is 100 for a load average of 1.0  */
  82
  83 #define LOAD_AVE_CVT(x) (int) (((double) (x)) * 100.0 / FSCALE)
  84
  85 /* Define CANNOT_DUMP on machines where unexec does not work.
  86    Then the function dump-emacs will not be defined
  87    and temacs will do (load "loadup") automatically unless told otherwise.  */
  88
  89 /* #define CANNOT_DUMP */
  90
  91 /* Define VIRT_ADDR_VARIES if the virtual addresses of
  92    pure and impure space as loaded can vary, and even their
  93    relative order cannot be relied on.
  94
  95    Otherwise Emacs assumes that text space precedes data space,
  96    numerically.  */
  97
  98 /* #define VIRT_ADDR_VARIES */
  99
 100 /* Define NO_REMAP if memory segmentation makes it not work well
 101    to change the boundary between the text section and data section
 102    when Emacs is dumped.  If you define this, the preloaded Lisp
 103    code will not be sharable; but that's better than failing completely.  */
 104
 105 /* #define NO_REMAP */
 106
 107 #define PNTR_COMPARISON_TYPE unsigned long
 108
 109 /* Define XPNTR to avoid or'ing with DATA_SEG_BITS */
 110 #undef DATA_SEG_BITS
 111
 112 #ifdef __FreeBSD__
 113
 114 /* The libraries for binaries native to the build host's architecture are
 115    installed under /usr/lib in FreeBSD, and the ones that need special paths
 116    are 32-bit compatibility libraries (installed under /usr/lib32).  To build
 117    a native binary of Emacs on FreeBSD/amd64 we can just point to /usr/lib.  */
 118
 119 #undef START_FILES
 120 #define START_FILES pre-crt0.o /usr/lib/crt1.o /usr/lib/crti.o
 121
 122 /* The duplicate -lgcc is intentional in the definition of LIB_STANDARD.
 123    The reason is that some functions in libgcc.a call functions from libc.a,
 124    and some libc.a functions need functions from libgcc.a.  Since most
 125    versions of ld are one-pass linkers, we need to mention -lgcc twice,
 126    or else we risk getting unresolved externals.  */
 127 #undef LIB_STANDARD
 128 #define LIB_STANDARD -lgcc -lc -lgcc /usr/lib/crtn.o
 129
 130 #elif defined(__OpenBSD__)
 131
 132 #undef START_FILES
 133 #define START_FILES pre-crt0.o /usr/lib/crt0.o /usr/lib/crtbegin.o
 134 #undef LIB_STANDARD
 135 #define LIB_STANDARD -lgcc -lc -lgcc /usr/lib/crtend.o
 136
 137 #elif defined(__NetBSD__)
 138
 139 /* LIB_STANDARD and START_FILES set correctly in s/netbsd.h */
 140
 141 #elif defined(sun)
 142
 143 #undef START_FILES
 144 #undef LIB_STANDARD
 145
 146 #else /* !__OpenBSD__ && !__FreeBSD__ && !__NetBSD__ && !sun */
 147
 148 #undef START_FILES
 149 #ifdef HAVE_LIB64_DIR
 150 #define START_FILES pre-crt0.o /usr/lib64/crt1.o /usr/lib64/crti.o
 151 #else
 152 #define START_FILES pre-crt0.o /usr/lib/crt1.o /usr/lib/crti.o
 153 #endif
 154
 155 /* The duplicate -lgcc is intentional in the definition of LIB_STANDARD.
 156    The reason is that some functions in libgcc.a call functions from libc.a,
 157    and some libc.a functions need functions from libgcc.a.  Since most
 158    versions of ld are one-pass linkers, we need to mention -lgcc twice,
 159    or else we risk getting unresolved externals.  */
 160 #undef LIB_STANDARD
 161 #ifdef HAVE_LIB64_DIR
 162 #define LIB_STANDARD -lgcc -lc -lgcc /usr/lib64/crtn.o
 163 #else
 164 #define LIB_STANDARD -lgcc -lc -lgcc /usr/lib/crtn.o
 165 #endif
 166
 167 #endif /* __FreeBSD__ */
 168 #endif /* !i386 */
 169
 170 /* arch-tag: 8a5e001d-e12e-4692-a3a6-0b15ba271c6e
 171    (do not change this comment) */