code.delx.au - gnu-emacs/blob - 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 of the License, or
  10 (at your option) 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.  If not, see <http://www.gnu.org/licenses/>.  */
  19
  20 #ifdef i386
  21 /* Although we're running on an amd64 kernel, we're actually compiling for
  22    the x86 architecture.  The user should probably have provided an
  23    explicit --build to `configure', but if everything else than the kernel
  24    is running in i386 mode, then the bug is really ours: we should have
  25    guessed better.  */
  26 #include "m/intel386.h"
  27 #else
  28
  29 /* The following line tells the configuration script what sort of
  30    operating system this machine is likely to run.
  31    USUAL-OPSYS="linux"  */
  32
  33 #define BITS_PER_LONG           64
  34 #define BITS_PER_EMACS_INT      64
  35
  36 /* Define WORDS_BIG_ENDIAN if lowest-numbered byte in a word
  37    is the most significant byte.  */
  38
  39 #undef WORDS_BIG_ENDIAN
  40
  41 /* Define NO_ARG_ARRAY if you cannot take the address of the first of a
  42  * group of arguments and treat it as an array of the arguments.  */
  43
  44 #define NO_ARG_ARRAY
  45
  46 /* Now define a symbol for the cpu type, if your compiler
  47    does not define it automatically:
  48    Ones defined so far include vax, m68000, ns16000, pyramid,
  49    orion, tahoe, APOLLO and many others */
  50 /* __x86_64 defined automatically.  */
  51
  52 /* Define the type to use.  */
  53 #define EMACS_INT               long
  54 #define EMACS_UINT              unsigned long
  55 #define SPECIAL_EMACS_INT
  56
  57 /* Define EXPLICIT_SIGN_EXTEND if XINT must explicitly sign-extend
  58    the 24-bit bit field into an int.  In other words, if bit fields
  59    are always unsigned.
  60
  61    This flag only matters if you use USE_LISP_UNION_TYPE.  */
  62
  63 #define EXPLICIT_SIGN_EXTEND
  64
  65 /* Data type of load average, as read out of kmem.  */
  66
  67 #define LOAD_AVE_TYPE long
  68
  69 /* Convert that into an integer that is 100 for a load average of 1.0  */
  70
  71 #define LOAD_AVE_CVT(x) (int) (((double) (x)) * 100.0 / FSCALE)
  72
  73 /* Define CANNOT_DUMP on machines where unexec does not work.
  74    Then the function dump-emacs will not be defined
  75    and temacs will do (load "loadup") automatically unless told otherwise.  */
  76
  77 /* #define CANNOT_DUMP */
  78
  79 /* Define VIRT_ADDR_VARIES if the virtual addresses of
  80    pure and impure space as loaded can vary, and even their
  81    relative order cannot be relied on.
  82
  83    Otherwise Emacs assumes that text space precedes data space,
  84    numerically.  */
  85
  86 /* #define VIRT_ADDR_VARIES */
  87
  88 /* Define NO_REMAP if memory segmentation makes it not work well
  89    to change the boundary between the text section and data section
  90    when Emacs is dumped.  If you define this, the preloaded Lisp
  91    code will not be sharable; but that's better than failing completely.  */
  92
  93 /* #define NO_REMAP */
  94
  95 #define PNTR_COMPARISON_TYPE unsigned long
  96
  97 /* Define XPNTR to avoid or'ing with DATA_SEG_BITS */
  98 #undef DATA_SEG_BITS
  99
 100 #ifdef __FreeBSD__
 101
 102 /* The libraries for binaries native to the build host's architecture are
 103    installed under /usr/lib in FreeBSD, and the ones that need special paths
 104    are 32-bit compatibility libraries (installed under /usr/lib32).  To build
 105    a native binary of Emacs on FreeBSD/amd64 we can just point to /usr/lib.  */
 106
 107 #undef START_FILES
 108 #define START_FILES pre-crt0.o /usr/lib/crt1.o /usr/lib/crti.o
 109
 110 /* The duplicate -lgcc is intentional in the definition of LIB_STANDARD.
 111    The reason is that some functions in libgcc.a call functions from libc.a,
 112    and some libc.a functions need functions from libgcc.a.  Since most
 113    versions of ld are one-pass linkers, we need to mention -lgcc twice,
 114    or else we risk getting unresolved externals.  */
 115 #undef LIB_STANDARD
 116 #define LIB_STANDARD -lgcc -lc -lgcc /usr/lib/crtn.o
 117
 118 #elif defined(__OpenBSD__)
 119
 120 #undef START_FILES
 121 #define START_FILES pre-crt0.o /usr/lib/crt0.o /usr/lib/crtbegin.o
 122 #undef LIB_STANDARD
 123 #define LIB_STANDARD -lgcc -lc -lgcc /usr/lib/crtend.o
 124
 125 #elif defined(__NetBSD__)
 126
 127 /* LIB_STANDARD and START_FILES set correctly in s/netbsd.h */
 128
 129 #elif defined(sun)
 130
 131 #undef START_FILES
 132 #undef LIB_STANDARD
 133
 134 #else /* !__OpenBSD__ && !__FreeBSD__ && !__NetBSD__ && !sun */
 135
 136 #undef START_FILES
 137 #ifdef HAVE_LIB64_DIR
 138 #define START_FILES pre-crt0.o /usr/lib64/crt1.o /usr/lib64/crti.o
 139 #else
 140 #define START_FILES pre-crt0.o /usr/lib/crt1.o /usr/lib/crti.o
 141 #endif
 142
 143 /* The duplicate -lgcc is intentional in the definition of LIB_STANDARD.
 144    The reason is that some functions in libgcc.a call functions from libc.a,
 145    and some libc.a functions need functions from libgcc.a.  Since most
 146    versions of ld are one-pass linkers, we need to mention -lgcc twice,
 147    or else we risk getting unresolved externals.  */
 148 #undef LIB_STANDARD
 149 #ifdef HAVE_LIB64_DIR
 150 #define LIB_STANDARD -lgcc -lc -lgcc /usr/lib64/crtn.o
 151 #else
 152 #define LIB_STANDARD -lgcc -lc -lgcc /usr/lib/crtn.o
 153 #endif
 154
 155 #endif /* __FreeBSD__ */
 156 #endif /* !i386 */
 157
 158 /* arch-tag: 8a5e001d-e12e-4692-a3a6-0b15ba271c6e
 159    (do not change this comment) */