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
  56 /* Define EXPLICIT_SIGN_EXTEND if XINT must explicitly sign-extend
  57    the 24-bit bit field into an int.  In other words, if bit fields
  58    are always unsigned.
  59
  60    This flag only matters if you use USE_LISP_UNION_TYPE.  */
  61
  62 #define EXPLICIT_SIGN_EXTEND
  63
  64 /* Data type of load average, as read out of kmem.  */
  65
  66 #define LOAD_AVE_TYPE long
  67
  68 /* Convert that into an integer that is 100 for a load average of 1.0  */
  69
  70 #define LOAD_AVE_CVT(x) (int) (((double) (x)) * 100.0 / FSCALE)
  71
  72 /* Define CANNOT_DUMP on machines where unexec does not work.
  73    Then the function dump-emacs will not be defined
  74    and temacs will do (load "loadup") automatically unless told otherwise.  */
  75
  76 /* #define CANNOT_DUMP */
  77
  78 /* Define VIRT_ADDR_VARIES if the virtual addresses of
  79    pure and impure space as loaded can vary, and even their
  80    relative order cannot be relied on.
  81
  82    Otherwise Emacs assumes that text space precedes data space,
  83    numerically.  */
  84
  85 /* #define VIRT_ADDR_VARIES */
  86
  87 /* Define NO_REMAP if memory segmentation makes it not work well
  88    to change the boundary between the text section and data section
  89    when Emacs is dumped.  If you define this, the preloaded Lisp
  90    code will not be sharable; but that's better than failing completely.  */
  91
  92 /* #define NO_REMAP */
  93
  94 #define PNTR_COMPARISON_TYPE unsigned long
  95
  96 /* Define XPNTR to avoid or'ing with DATA_SEG_BITS */
  97 #undef DATA_SEG_BITS
  98
  99 #ifdef __FreeBSD__
 100
 101 /* The libraries for binaries native to the build host's architecture are
 102    installed under /usr/lib in FreeBSD, and the ones that need special paths
 103    are 32-bit compatibility libraries (installed under /usr/lib32).  To build
 104    a native binary of Emacs on FreeBSD/amd64 we can just point to /usr/lib.  */
 105
 106 #undef START_FILES
 107 #define START_FILES pre-crt0.o /usr/lib/crt1.o /usr/lib/crti.o
 108
 109 /* The duplicate -lgcc is intentional in the definition of LIB_STANDARD.
 110    The reason is that some functions in libgcc.a call functions from libc.a,
 111    and some libc.a functions need functions from libgcc.a.  Since most
 112    versions of ld are one-pass linkers, we need to mention -lgcc twice,
 113    or else we risk getting unresolved externals.  */
 114 #undef LIB_STANDARD
 115 #define LIB_STANDARD -lgcc -lc -lgcc /usr/lib/crtn.o
 116
 117 #elif defined(__OpenBSD__)
 118
 119 #undef START_FILES
 120 #define START_FILES pre-crt0.o /usr/lib/crt0.o /usr/lib/crtbegin.o
 121 #undef LIB_STANDARD
 122 #define LIB_STANDARD -lgcc -lc -lgcc /usr/lib/crtend.o
 123
 124 #elif defined(__NetBSD__)
 125
 126 /* LIB_STANDARD and START_FILES set correctly in s/netbsd.h */
 127
 128 #elif defined(sun)
 129
 130 #undef START_FILES
 131 #undef LIB_STANDARD
 132
 133 #else /* !__OpenBSD__ && !__FreeBSD__ && !__NetBSD__ && !sun */
 134
 135 #undef START_FILES
 136 #ifdef HAVE_LIB64_DIR
 137 #define START_FILES pre-crt0.o /usr/lib64/crt1.o /usr/lib64/crti.o
 138 #else
 139 #define START_FILES pre-crt0.o /usr/lib/crt1.o /usr/lib/crti.o
 140 #endif
 141
 142 /* The duplicate -lgcc is intentional in the definition of LIB_STANDARD.
 143    The reason is that some functions in libgcc.a call functions from libc.a,
 144    and some libc.a functions need functions from libgcc.a.  Since most
 145    versions of ld are one-pass linkers, we need to mention -lgcc twice,
 146    or else we risk getting unresolved externals.  */
 147 #undef LIB_STANDARD
 148 #ifdef HAVE_LIB64_DIR
 149 #define LIB_STANDARD -lgcc -lc -lgcc /usr/lib64/crtn.o
 150 #else
 151 #define LIB_STANDARD -lgcc -lc -lgcc /usr/lib/crtn.o
 152 #endif
 153
 154 #endif /* __FreeBSD__ */
 155 #endif /* !i386 */
 156
 157 /* arch-tag: 8a5e001d-e12e-4692-a3a6-0b15ba271c6e
 158    (do not change this comment) */