src/m/amdx86-64.h

   1 /* machine description file for AMD x86-64.
   2    Copyright (C) 2002, 2003, 2004, 2005, 2006, 2007, 2008, 2009, 2010, 2011
   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 XPNTR to avoid or'ing with DATA_SEG_BITS */
  73 #undef DATA_SEG_BITS
  74
  75 #ifdef __FreeBSD__
  76
  77 /* The libraries for binaries native to the build host's architecture are
  78    installed under /usr/lib in FreeBSD, and the ones that need special paths
  79    are 32-bit compatibility libraries (installed under /usr/lib32).  To build
  80    a native binary of Emacs on FreeBSD/amd64 we can just point to /usr/lib.  */
  81
  82 #undef START_FILES
  83 #define START_FILES pre-crt0.o $(CRT_DIR)/crt1.o $(CRT_DIR)/crti.o
  84
  85 /* The duplicate -lgcc is intentional in the definition of LIB_STANDARD.
  86    The reason is that some functions in libgcc.a call functions from libc.a,
  87    and some libc.a functions need functions from libgcc.a.  Since most
  88    versions of ld are one-pass linkers, we need to mention -lgcc twice,
  89    or else we risk getting unresolved externals.  */
  90 #undef LIB_STANDARD
  91 #define LIB_STANDARD -lgcc -lc -lgcc $(CRT_DIR)/crtn.o
  92
  93 #elif defined(__OpenBSD__)
  94
  95 #undef START_FILES
  96 #define START_FILES pre-crt0.o $(CRT_DIR)/crt0.o $(CRT_DIR)/crtbegin.o
  97 #undef LIB_STANDARD
  98 #define LIB_STANDARD -lgcc -lc -lgcc $(CRT_DIR)/crtend.o
  99
 100 #elif defined(__NetBSD__)
 101
 102 /* LIB_STANDARD and START_FILES set correctly in s/netbsd.h */
 103
 104 #elif defined(SOLARIS2)
 105
 106 #undef START_FILES
 107 #undef LIB_STANDARD
 108
 109 #elif defined(__APPLE__)
 110
 111 /* LIB_STANDARD and START_FILES set correctly in s/darwin.h */
 112
 113 #else /* !__OpenBSD__ && !__FreeBSD__ && !__NetBSD__ && !SOLARIS2
 114          && !__APPLE__ */
 115 /* The duplicate -lgcc is intentional in the definition of LIB_STANDARD.
 116    The reason is that some functions in libgcc.a call functions from libc.a,
 117    and some libc.a functions need functions from libgcc.a.  Since most
 118    versions of ld are one-pass linkers, we need to mention -lgcc twice,
 119    or else we risk getting unresolved externals.  */
 120 #undef START_FILES
 121 #undef LIB_STANDARD
 122 #define START_FILES pre-crt0.o $(CRT_DIR)/crt1.o $(CRT_DIR)/crti.o
 123 #define LIB_STANDARD -lgcc -lc -lgcc $(CRT_DIR)/crtn.o
 124
 125 #endif /* __FreeBSD__ */
 126 #endif /* !i386 */
 127
 128 /* arch-tag: 8a5e001d-e12e-4692-a3a6-0b15ba271c6e
 129    (do not change this comment) */