src/m/amdx86-64.h

   1 /* machine description file for AMD x86-64.
   2    Copyright (C) 2002, 2003, 2004, 2005, 2006, 2007 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 3, 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., 51 Franklin Street, Fifth Floor,
  19 Boston, MA 02110-1301, USA.  */
  20
  21 #ifdef i386
  22 /* Although we're running on an amd64 kernel, we're actually compiling for
  23    the x86 architecture.  The user should probably have provided an
  24    explicit --build to `configure', but if everything else than the kernel
  25    is running in i386 mode, then the bug is really ours: we should have
  26    guessed better.  */
  27 #include "m/intel386.h"
  28 #else
  29
  30 /* The following line tells the configuration script what sort of
  31    operating system this machine is likely to run.
  32    USUAL-OPSYS="linux"  */
  33
  34 #define BITS_PER_LONG           64
  35 #define BITS_PER_EMACS_INT      64
  36
  37 /* Define WORDS_BIG_ENDIAN if lowest-numbered byte in a word
  38    is the most significant byte.  */
  39
  40 #undef WORDS_BIG_ENDIAN
  41
  42 /* Define NO_ARG_ARRAY if you cannot take the address of the first of a
  43  * group of arguments and treat it as an array of the arguments.  */
  44
  45 #define NO_ARG_ARRAY
  46
  47 /* Define WORD_MACHINE if addresses and such have
  48  * to be corrected before they can be used as byte counts.  */
  49
  50 /* #define WORD_MACHINE */
  51
  52 /* Now define a symbol for the cpu type, if your compiler
  53    does not define it automatically:
  54    Ones defined so far include vax, m68000, ns16000, pyramid,
  55    orion, tahoe, APOLLO and many others */
  56 /* __x86_64 defined automatically.  */
  57
  58 /* Use type int rather than a union, to represent Lisp_Object */
  59 /* This is desirable for most machines.  */
  60
  61 #define NO_UNION_TYPE
  62
  63 /* Define the type to use.  */
  64 #define EMACS_INT               long
  65 #define EMACS_UINT              unsigned long
  66 #define SPECIAL_EMACS_INT
  67
  68 /* Define EXPLICIT_SIGN_EXTEND if XINT must explicitly sign-extend
  69    the 24-bit bit field into an int.  In other words, if bit fields
  70    are always unsigned.
  71
  72    If you use NO_UNION_TYPE, this flag does not matter.  */
  73
  74 #define EXPLICIT_SIGN_EXTEND
  75
  76 /* Data type of load average, as read out of kmem.  */
  77
  78 #define LOAD_AVE_TYPE long
  79
  80 /* Convert that into an integer that is 100 for a load average of 1.0  */
  81
  82 #define LOAD_AVE_CVT(x) (int) (((double) (x)) * 100.0 / FSCALE)
  83
  84 /* Define CANNOT_DUMP on machines where unexec does not work.
  85    Then the function dump-emacs will not be defined
  86    and temacs will do (load "loadup") automatically unless told otherwise.  */
  87
  88 /* #define CANNOT_DUMP */
  89
  90 /* Define VIRT_ADDR_VARIES if the virtual addresses of
  91    pure and impure space as loaded can vary, and even their
  92    relative order cannot be relied on.
  93
  94    Otherwise Emacs assumes that text space precedes data space,
  95    numerically.  */
  96
  97 /* #define VIRT_ADDR_VARIES */
  98
  99 /* Define NO_REMAP if memory segmentation makes it not work well
 100    to change the boundary between the text section and data section
 101    when Emacs is dumped.  If you define this, the preloaded Lisp
 102    code will not be sharable; but that's better than failing completely.  */
 103
 104 /* #define NO_REMAP */
 105
 106 #define PNTR_COMPARISON_TYPE unsigned long
 107
 108 /* Define XPNTR to avoid or'ing with DATA_SEG_BITS */
 109 #undef DATA_SEG_BITS
 110
 111 #ifdef __FreeBSD__
 112
 113 /* The libraries for binaries native to the build host's architecture are
 114    installed under /usr/lib in FreeBSD, and the ones that need special paths
 115    are 32-bit compatibility libraries (installed under /usr/lib32).  To build
 116    a native binary of Emacs on FreeBSD/amd64 we can just point to /usr/lib.  */
 117
 118 #undef START_FILES
 119 #define START_FILES pre-crt0.o /usr/lib/crt1.o /usr/lib/crti.o
 120
 121 /* The duplicate -lgcc is intentional in the definition of LIB_STANDARD.
 122    The reason is that some functions in libgcc.a call functions from libc.a,
 123    and some libc.a functions need functions from libgcc.a.  Since most
 124    versions of ld are one-pass linkers, we need to mention -lgcc twice,
 125    or else we risk getting unresolved externals.  */
 126 #undef LIB_STANDARD
 127 #define LIB_STANDARD -lgcc -lc -lgcc /usr/lib/crtn.o
 128
 129 #elif defined(__OpenBSD__)
 130
 131 #undef START_FILES
 132 #define START_FILES pre-crt0.o /usr/lib/crt0.o /usr/lib/crtbegin.o
 133 #undef LIB_STANDARD
 134 #define LIB_STANDARD -lgcc -lc -lgcc /usr/lib/crtend.o
 135
 136 #elif defined(__NetBSD__)
 137
 138 /* LIB_STANDARD and START_FILES set correctly in s/netbsd.h */
 139
 140 #elif defined(sun)
 141
 142 #undef START_FILES
 143 #undef LIB_STANDARD
 144
 145 #else /* !__OpenBSD__ && !__FreeBSD__ && !__NetBSD__ && !sun */
 146
 147 #undef START_FILES
 148 #ifdef HAVE_X86_64_LIB64_DIR
 149 #define START_FILES pre-crt0.o /usr/lib64/crt1.o /usr/lib64/crti.o
 150 #else
 151 #define START_FILES pre-crt0.o /usr/lib/crt1.o /usr/lib/crti.o
 152 #endif
 153
 154 /* The duplicate -lgcc is intentional in the definition of LIB_STANDARD.
 155    The reason is that some functions in libgcc.a call functions from libc.a,
 156    and some libc.a functions need functions from libgcc.a.  Since most
 157    versions of ld are one-pass linkers, we need to mention -lgcc twice,
 158    or else we risk getting unresolved externals.  */
 159 #undef LIB_STANDARD
 160 #ifdef HAVE_X86_64_LIB64_DIR
 161 #define LIB_STANDARD -lgcc -lc -lgcc /usr/lib64/crtn.o
 162 #else
 163 #define LIB_STANDARD -lgcc -lc -lgcc /usr/lib/crtn.o
 164 #endif
 165
 166 #endif /* __FreeBSD__ */
 167 #endif /* !i386 */
 168
 169 /* arch-tag: 8a5e001d-e12e-4692-a3a6-0b15ba271c6e
 170    (do not change this comment) */