1/* m- file for Mips machines.
2   Copyright (C) 1987, 1992, 1993, 1995, 2001, 2002, 2003, 2004,
3                 2005, 2006, 2007  Free Software Foundation, Inc.
4
5   This file contains some changes for our SVR4 based SINIX-Mips 5.4.
6   I hope this is helpful to port the emacs to our RM?00 series and
7   maybe to the DC/OSx (Mips-based) machines of Pyramid Inc.
8     (Marco.Walther@mch.sni.de)
9
10This file is part of GNU Emacs.
11
12GNU Emacs is free software; you can redistribute it and/or modify
13it under the terms of the GNU General Public License as published by
14the Free Software Foundation; either version 2, or (at your option)
15any later version.
16
17GNU Emacs is distributed in the hope that it will be useful,
18but WITHOUT ANY WARRANTY; without even the implied warranty of
19MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
20GNU General Public License for more details.
21
22You should have received a copy of the GNU General Public License
23along with GNU Emacs; see the file COPYING.  If not, write to
24the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
25Boston, MA 02110-1301, USA.  */
26
27
28/* The following line tells the configuration script what sort of
29   operating system this machine is likely to run.
30   USUAL-OPSYS="note"
31
32NOTE-START
33Use m-mips4.h for RISCOS version 4; use s-bsd4-3.h with the BSD world.
34Note that the proper m- file for the Decstation is m-pmax.h.
35This is the m- file for SNI RM*00 machines. Use s- sinix5-4.h file!
36With this the file mips-siemens.h is obsolete.
37NOTE-END  */
38
39/* Define BIG_ENDIAN iff lowest-numbered byte in a word
40   is the most significant byte.  */
41
42#define BIG_ENDIAN
43
44/* Define NO_ARG_ARRAY if you cannot take the address of the first of a
45 * group of arguments and treat it as an array of the arguments.  */
46
47#define NO_ARG_ARRAY
48
49/* Define WORD_MACHINE if addresses and such have
50 * to be corrected before they can be used as byte counts.  */
51
52#undef WORD_MACHINE
53
54/* Define how to take a char and sign-extend into an int.
55   On machines where char is signed, this is a no-op.  */
56
57#define SIGN_EXTEND_CHAR(c) ((signed char)(c))
58
59/* Now define a symbol for the cpu type, if your compiler
60   does not define it automatically:
61   Ones defined so far include vax, m68000, ns16000, pyramid,
62   orion, tahoe, APOLLO and many others */
63#ifndef mips
64#	define mips
65#endif
66
67/* Use type int rather than a union, to represent Lisp_Object */
68/* This is desirable for most machines.  */
69
70#define NO_UNION_TYPE
71
72/* Define EXPLICIT_SIGN_EXTEND if XINT must explicitly sign-extend
73   the 24-bit bit field into an int.  In other words, if bit fields
74   are always unsigned.
75
76   If you use NO_UNION_TYPE, this flag does not matter.  */
77
78#define EXPLICIT_SIGN_EXTEND
79
80/* Data type of load average, as read out of kmem.  */
81
82#define LOAD_AVE_TYPE long
83
84/* Convert that into an integer that is 100 for a load average of 1.0  */
85
86#define LOAD_AVE_CVT(x) (int) (((double) (x)) * 100.0 / 256.0)
87
88/* CDC EP/IX 1.4.3 uses /unix */
89
90#undef KERNEL_FILE
91#define KERNEL_FILE "/unix"
92
93/* Define CANNOT_DUMP on machines where unexec does not work.
94   Then the function dump-emacs will not be defined
95   and temacs will do (load "loadup") automatically unless told otherwise.  */
96
97#undef CANNOT_DUMP
98
99/* Define VIRT_ADDR_VARIES if the virtual addresses of
100   pure and impure space as loaded can vary, and even their
101   relative order cannot be relied on.
102
103   Otherwise Emacs assumes that text space precedes data space,
104   numerically.  */
105
106/* #define VIRT_ADDR_VARIES */
107
108/* Define NO_REMAP if memory segmentation makes it not work well
109   to change the boundary between the text section and data section
110   when Emacs is dumped.  If you define this, the preloaded Lisp
111   code will not be sharable; but that's better than failing completely.  */
112
113#define NO_REMAP
114
115/* Describe layout of the address space in an executing process.  */
116/* MARCO ???
117*/
118#define TEXT_START 0x400000
119/*
120#define DATA_START 0x10000000
121#define DATA_SEG_BITS	0x10000000
122*/
123#ifdef UNEXEC
124#undef UNEXEC
125#endif
126#define UNEXEC unexsni.o
127
128#undef ORDINARY_LINK
129
130#undef LIBS_DEBUG
131
132/* Alter some of the options used when linking.  */
133
134#define LIBS_MACHINE -lmld
135#define START_FILES pre-crt0.o /usr/ccs/lib/crt1.o /usr/ccs/lib/crti.o /usr/ccs/lib/values-Xt.o
136
137#ifdef LIB_STANDARD
138#undef LIB_STANDARD
139#endif
140#define LIB_STANDARD -lc /usr/ccs/lib/crtn.o
141
142#ifdef __GNUC__
143#define C_DEBUG_SWITCH
144#define LD_SWITCH_MACHINE
145#else
146#define C_DEBUG_SWITCH -DSYSV
147#define C_OPTIMIZE_SWITCH -DSYSV
148#define LD_SWITCH_MACHINE
149#endif
150
151
152/* The standard definitions of these macros would work ok,
153   but these are faster because the constants are short.  */
154
155#define XUINT(a) (((unsigned)(a) << (BITS_PER_INT-VALBITS)) >> (BITS_PER_INT-VALBITS))
156
157#define XSET(var, type, ptr)						\
158  ((var) =								\
159   ((int)(type) << VALBITS)						\
160   + (((unsigned) (ptr) << (BITS_PER_INT-VALBITS)) >> (BITS_PER_INT-VALBITS)))
161
162/* arch-tag: a4f5c090-0bd5-48f0-9724-b7d531f9b6c8
163   (do not change this comment) */
164