1 /* machine description file for AMD x86-64.
2 Copyright (C) 2002, 2003 Free Software Foundation, Inc.
4 This file is part of GNU Emacs.
6 GNU Emacs is free software; you can redistribute it and/or modify
7 it under the terms of the GNU General Public License as published by
8 the Free Software Foundation; either version 2, or (at your option)
11 GNU Emacs is distributed in the hope that it will be useful,
12 but WITHOUT ANY WARRANTY; without even the implied warranty of
13 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
14 GNU General Public License for more details.
16 You should have received a copy of the GNU General Public License
17 along with GNU Emacs; see the file COPYING. If not, write to
18 the Free Software Foundation, Inc., 59 Temple Place - Suite 330,
19 Boston, MA 02111-1307, USA. */
22 /* The following line tells the configuration script what sort of
23 operating system this machine is likely to run.
24 USUAL-OPSYS="linux" */
26 #define BITS_PER_LONG 64
27 #define BITS_PER_EMACS_INT 64
29 /* Define WORDS_BIG_ENDIAN iff lowest-numbered byte in a word
30 is the most significant byte. */
32 #undef WORDS_BIG_ENDIAN
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. */
39 /* Define WORD_MACHINE if addresses and such have
40 * to be corrected before they can be used as byte counts. */
42 /* #define WORD_MACHINE */
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. */
50 /* Use type int rather than a union, to represent Lisp_Object */
51 /* This is desirable for most machines. */
55 /* Define the type to use. */
56 #define EMACS_INT long
57 #define EMACS_UINT unsigned long
58 #define SPECIAL_EMACS_INT
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
64 If you use NO_UNION_TYPE, this flag does not matter. */
66 #define EXPLICIT_SIGN_EXTEND
68 /* Data type of load average, as read out of kmem. */
70 #define LOAD_AVE_TYPE long
72 /* Convert that into an integer that is 100 for a load average of 1.0 */
74 #define LOAD_AVE_CVT(x) (int) (((double) (x)) * 100.0 / FSCALE)
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. */
80 /* #define CANNOT_DUMP */
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.
86 Otherwise Emacs assumes that text space precedes data space,
89 /* #define VIRT_ADDR_VARIES */
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. */
96 /* #define NO_REMAP */
98 #define PNTR_COMPARISON_TYPE unsigned long
100 /* On the 64 bit architecture, we can use 60 bits for addresses */
104 /* Define XINT and XUINT so that they can take arguments of type int */
105 #define XINT(a) (((long) (a) << (BITS_PER_LONG - VALBITS)) >> (BITS_PER_LONG - VALBITS))
106 #define XUINT(a) ((long) (a) & VALMASK)
108 /* Define XPNTR to avoid or'ing with DATA_SEG_BITS */
110 #define XPNTR(a) XUINT (a)
113 #define START_FILES pre-crt0.o /usr/lib64/crt1.o /usr/lib64/crti.o
116 #define LIB_STANDARD -lgcc -lc -lgcc /usr/lib64/crtn.o