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