1/* machine description file for AMD x86-64. 2 Copyright (C) 2002, 2003, 2004, 2005, 2006, 2007 Free Software Foundation, Inc. 3 4This file is part of GNU Emacs. 5 6GNU Emacs is free software; you can redistribute it and/or modify 7it under the terms of the GNU General Public License as published by 8the Free Software Foundation; either version 2, or (at your option) 9any later version. 10 11GNU Emacs is distributed in the hope that it will be useful, 12but WITHOUT ANY WARRANTY; without even the implied warranty of 13MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 14GNU General Public License for more details. 15 16You should have received a copy of the GNU General Public License 17along with GNU Emacs; see the file COPYING. If not, write to 18the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor, 19Boston, MA 02110-1301, USA. */ 20 21 22/* The following line tells the configuration script what sort of 23 operating system this machine is likely to run. 24 USUAL-OPSYS="linux" */ 25 26#define BITS_PER_LONG 64 27#define BITS_PER_EMACS_INT 64 28 29/* Define WORDS_BIG_ENDIAN iff lowest-numbered byte in a word 30 is the most significant byte. */ 31 32#undef WORDS_BIG_ENDIAN 33 34/* Define NO_ARG_ARRAY if you cannot take the address of the first of a 35 * group of arguments and treat it as an array of the arguments. */ 36 37#define NO_ARG_ARRAY 38 39/* Define WORD_MACHINE if addresses and such have 40 * to be corrected before they can be used as byte counts. */ 41 42/* #define WORD_MACHINE */ 43 44/* Now define a symbol for the cpu type, if your compiler 45 does not define it automatically: 46 Ones defined so far include vax, m68000, ns16000, pyramid, 47 orion, tahoe, APOLLO and many others */ 48/* __x86_64 defined automatically. */ 49 50/* Use type int rather than a union, to represent Lisp_Object */ 51/* This is desirable for most machines. */ 52 53#define NO_UNION_TYPE 54 55/* Define the type to use. */ 56#define EMACS_INT long 57#define EMACS_UINT unsigned long 58#define SPECIAL_EMACS_INT 59 60/* Define EXPLICIT_SIGN_EXTEND if XINT must explicitly sign-extend 61 the 24-bit bit field into an int. In other words, if bit fields 62 are always unsigned. 63 64 If you use NO_UNION_TYPE, this flag does not matter. */ 65 66#define EXPLICIT_SIGN_EXTEND 67 68/* Data type of load average, as read out of kmem. */ 69 70#define LOAD_AVE_TYPE long 71 72/* Convert that into an integer that is 100 for a load average of 1.0 */ 73 74#define LOAD_AVE_CVT(x) (int) (((double) (x)) * 100.0 / FSCALE) 75 76/* Define CANNOT_DUMP on machines where unexec does not work. 77 Then the function dump-emacs will not be defined 78 and temacs will do (load "loadup") automatically unless told otherwise. */ 79 80/* #define CANNOT_DUMP */ 81 82/* Define VIRT_ADDR_VARIES if the virtual addresses of 83 pure and impure space as loaded can vary, and even their 84 relative order cannot be relied on. 85 86 Otherwise Emacs assumes that text space precedes data space, 87 numerically. */ 88 89/* #define VIRT_ADDR_VARIES */ 90 91/* Define NO_REMAP if memory segmentation makes it not work well 92 to change the boundary between the text section and data section 93 when Emacs is dumped. If you define this, the preloaded Lisp 94 code will not be sharable; but that's better than failing completely. */ 95 96/* #define NO_REMAP */ 97 98#define PNTR_COMPARISON_TYPE unsigned long 99 100/* Define XPNTR to avoid or'ing with DATA_SEG_BITS */ 101#undef DATA_SEG_BITS 102 103#ifdef __FreeBSD__ 104 105/* The libraries for binaries native to the build host's architecture are 106 installed under /usr/lib in FreeBSD, and the ones that need special paths 107 are 32-bit compatibility libraries (installed under /usr/lib32). To build 108 a native binary of Emacs on FreeBSD/amd64 we can just point to /usr/lib. */ 109 110#undef START_FILES 111#define START_FILES pre-crt0.o /usr/lib/crt1.o /usr/lib/crti.o 112 113/* The duplicate -lgcc is intentional in the definition of LIB_STANDARD. 114 The reason is that some functions in libgcc.a call functions from libc.a, 115 and some libc.a functions need functions from libgcc.a. Since most 116 versions of ld are one-pass linkers, we need to mention -lgcc twice, 117 or else we risk getting unresolved externals. */ 118#undef LIB_STANDARD 119#define LIB_STANDARD -lgcc -lc -lgcc /usr/lib/crtn.o 120 121#elif defined(__OpenBSD__) 122 123#undef START_FILES 124#define START_FILES pre-crt0.o /usr/lib/crt0.o /usr/lib/crtbegin.o 125#undef LIB_STANDARD 126#define LIB_STANDARD -lgcc -lc -lgcc /usr/lib/crtend.o 127 128#elif defined(__NetBSD__) 129 130/* LIB_STANDARD and START_FILES set correctly in s/netbsd.h */ 131 132#elif defined(sun) 133 134#undef START_FILES 135#undef LIB_STANDARD 136 137#else /* !__OpenBSD__ && !__FreeBSD__ && !__NetBSD__ && !sun */ 138 139#undef START_FILES 140#ifdef HAVE_X86_64_LIB64_DIR 141#define START_FILES pre-crt0.o /usr/lib64/crt1.o /usr/lib64/crti.o 142#else 143#define START_FILES pre-crt0.o /usr/lib/crt1.o /usr/lib/crti.o 144#endif 145 146/* The duplicate -lgcc is intentional in the definition of LIB_STANDARD. 147 The reason is that some functions in libgcc.a call functions from libc.a, 148 and some libc.a functions need functions from libgcc.a. Since most 149 versions of ld are one-pass linkers, we need to mention -lgcc twice, 150 or else we risk getting unresolved externals. */ 151#undef LIB_STANDARD 152#ifdef HAVE_X86_64_LIB64_DIR 153#define LIB_STANDARD -lgcc -lc -lgcc /usr/lib64/crtn.o 154#else 155#define LIB_STANDARD -lgcc -lc -lgcc /usr/lib/crtn.o 156#endif 157 158#endif /* __FreeBSD__ */ 159 160/* arch-tag: 8a5e001d-e12e-4692-a3a6-0b15ba271c6e 161 (do not change this comment) */ 162