1 /* machine description file for Iris-4D machines. Use with s-iris3-6.h
2 Copyright (C) 1987 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 XEmacs; 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. */
21 /* Synched up with: FSF 19.31. */
23 /* The following line tells the configuration script what sort of
24 operating system this machine is likely to run.
25 USUAL-OPSYS="irix3-3" */
27 /* Define WORD_MACHINE if addresses and such have
28 * to be corrected before they can be used as byte counts. */
32 /* Now define a symbol for the cpu type, if your compiler
33 does not define it automatically:
34 Ones defined so far include vax, m68000, ns16000, pyramid,
35 orion, tahoe, APOLLO and many others */
45 /* Define EXPLICIT_SIGN_EXTEND if XINT must explicitly sign-extend
46 the bit field into an int. In other words, if bit fields
49 If you use NO_UNION_TYPE, this flag does not matter. */
51 #define EXPLICIT_SIGN_EXTEND
53 /* Data type of load average, as read out of kmem. */
55 #define LOAD_AVE_TYPE long /* This doesn't quite work on the 4D */
57 /* Convert that into an integer that is 100 for a load average of 1.0 */
59 #define LOAD_AVE_CVT(x) (int)(((double)(x)*100)/1024.0)
61 /* s-iris3-6.h uses /vmunix */
64 #define KERNEL_FILE "/unix"
66 /* Define CANNOT_DUMP on machines where unexec does not work.
67 Then the function dump-emacs will not be defined
68 and temacs will do (load "loadup") automatically unless told otherwise. */
72 /* Define VIRT_ADDR_VARIES if the virtual addresses of
73 pure and impure space as loaded can vary, and even their
74 relative order cannot be relied on.
76 Otherwise Emacs assumes that text space precedes data space,
79 /* #define VIRT_ADDR_VARIES */
81 /* Define C_ALLOCA if this machine does not support a true alloca
82 and the one written in C should be used instead.
83 Define HAVE_ALLOCA to say that the system provides a properly
84 working alloca function and it should be used.
85 Define neither one if an assembler-language alloca
86 in the file alloca.s should be used. */
89 /* #define HAVE_ALLOCA */
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. */
98 /* This machine requires completely different unexec code
99 which lives in a separate file. Specify the file name. */
104 #define UNEXEC "unexelf.o"
106 #define TEXT_START 0x400000
109 * DATA_SEG_BITS forces extra bits to be or'd in with any pointers which
110 * were stored in a Lisp_Object (as Emacs uses fewer than 32 bits for
111 * the value field of a LISP_OBJECT).
114 #define DATA_START 0x10000000
115 #define DATA_SEG_BITS 0x10000000
118 /* -lsun in case using Yellow Pages for passwords. */
121 /* Define this if you have a fairly recent system,
122 in which crt1.o and crt1.n should be used. */
126 /* Must define START-FILES so that the linker can find /usr/lib/crt0.o. */
127 #define START_FILES "pre-crt0.o /usr/lib/crt1.o"
128 #define LIB_STANDARD "-lbsd -lc /usr/lib/crtn.o"
130 #define START_FILES "pre-crt0.o /usr/lib/crt0.o"
131 /* The entry-point label (start of text segment) is `start', not `__start'. */
132 #define DEFAULT_ENTRY_ADDRESS start
133 #define LIB_STANDARD "-lbsd -lc"
136 /* Use terminfo instead of termcap. */
140 /* sioctl.h should be included where appropriate. */
144 /* Letter to use in finding device name of first pty,
145 if system supports pty's. 'a' means it is /dev/ptya0 */
147 #undef FIRST_PTY_LETTER
148 #define FIRST_PTY_LETTER 'q'
150 /* Define STACK_DIRECTION for alloca.c */
152 #define STACK_DIRECTION -1
155 /* Turn off some "helpful" error checks for type mismatches
156 that we can't fix without breaking other machines. */
157 #define C_SWITCH_MACHINE "-cckr"