1/* machine description file For the powerpc Macintosh.
2   Copyright (C) 1994, 2001, 2002, 2003, 2004,
3                 2005, 2006, 2007 Free Software Foundation, Inc.
4
5This file is part of GNU Emacs.
6
7GNU Emacs is free software; you can redistribute it and/or modify
8it under the terms of the GNU General Public License as published by
9the Free Software Foundation; either version 2, or (at your option)
10any later version.
11
12GNU Emacs is distributed in the hope that it will be useful,
13but WITHOUT ANY WARRANTY; without even the implied warranty of
14MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
15GNU General Public License for more details.
16
17You should have received a copy of the GNU General Public License
18along with GNU Emacs; see the file COPYING.  If not, write to
19the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
20Boston, MA 02110-1301, USA.  */
21
22/* Define WORDS_BIG_ENDIAN iff lowest-numbered byte in a word
23   is the most significant byte.  */
24
25#define WORDS_BIG_ENDIAN
26
27/* Define NO_ARG_ARRAY if you cannot take the address of the first of a
28 * group of arguments and treat it as an array of the arguments.  */
29
30#define NO_ARG_ARRAY
31
32/* Define WORD_MACHINE if addresses and such have
33 * to be corrected before they can be used as byte counts.  */
34
35/* #define WORD_MACHINE */
36
37/* Now define a symbol for the cpu type, if your compiler
38   does not define it automatically:
39   Ones defined so far include vax, m68000, ns16000, pyramid,
40   orion, tahoe, APOLLO and many others */
41
42/* Use type EMACS_INT rather than a union, to represent Lisp_Object */
43/* This is desirable for most machines.  */
44
45#define NO_UNION_TYPE
46
47/* Data type of load average, as read out of kmem.  */
48
49#define LOAD_AVE_TYPE long
50
51/* Convert that into an integer that is 100 for a load average of 1.0  */
52
53#define LOAD_AVE_CVT(x) (int) (((double) (x)) * 100.0 / FSCALE)
54
55/* Some really obscure 4.2-based systems (like Sequent DYNIX)
56 * do not support asynchronous I/O (using SIGIO) on sockets,
57 * even though it works fine on tty's.  If you have one of
58 * these systems, define the following, and then use it in
59 * config.h (or elsewhere) to decide when (not) to use SIGIO.
60 *
61 * You'd think this would go in an operating-system description file,
62 * but since it only occurs on some, but not all, BSD systems, the
63 * reasonable place to select for it is in the machine description
64 * file.
65 */
66
67/* #define NO_SOCK_SIGIO */
68
69#define UNEXEC unexelf.o
70
71#define NO_TERMIO
72
73#if defined (LINUX) || defined (__NetBSD__) || defined (__OpenBSD__)
74# define TEXT_END ({ extern int _etext; &_etext; })
75#endif
76
77#if (defined (__NetBSD__) || defined (__OpenBSD__)) && defined (__ELF__)
78#define HAVE_TEXT_START
79#endif
80
81/* NAKAJI Hiroyuki <nakaji@tutrp.tut.ac.jp> says this is needed
82   For MkLinux/LinuxPPC.  */
83
84#ifdef LINUX
85#define LINKER $(CC) -nostdlib
86/* s/gnu-linux.h defines this to `-z nocombreloc' which does not work here
87   because prefix-args is not used.  */
88#undef LD_SWITCH_SYSTEM_TEMACS
89#define LD_SWITCH_MACHINE_TEMACS -Xlinker -znocombreloc
90#ifdef _ARCH_PPC64
91#undef START_FILES
92#define START_FILES pre-crt0.o /usr/lib64/crt1.o /usr/lib64/crti.o
93#undef LIB_STANDARD
94#define LIB_STANDARD -lgcc -lc -lgcc /usr/lib64/crtn.o
95#endif
96#endif
97
98#if 0  /* This breaks things on PPC GNU/Linux ecept for Yellowdog,
99	  even with identical GCC, as, ld.  Let's take it out until we
100	  know what's really going on here.  */
101/* GCC 2.95 and newer on GNU/Linux PPC changed the load address to
102   0x10000000.  */
103#if defined __linux__
104#if __GNUC__ > 2 || (__GNUC__ == 2 && __GNUC_MINOR__ >= 95)
105#define DATA_SEG_BITS  0x10000000
106#endif
107#endif
108#endif /* 0 */
109
110#ifdef _ARCH_PPC64
111#ifndef _LP64
112#define _LP64
113#endif
114#endif
115
116/* arch-tag: 41913e4e-e7d1-4023-aadb-210cc31712ed
117   (do not change this comment) */
118