1 /* machine description file for SEQUENT machines running DYNIX/ptx
2 Copyright (C) 1985, 1986, 2002, 2003, 2004,
3 2005 Free Software Foundation, Inc.
5 This file is part of GNU Emacs.
7 GNU Emacs is free software; you can redistribute it and/or modify
8 it under the terms of the GNU General Public License as published by
9 the Free Software Foundation; either version 2, or (at your option)
12 GNU Emacs is distributed in the hope that it will be useful,
13 but WITHOUT ANY WARRANTY; without even the implied warranty of
14 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
15 GNU General Public License for more details.
17 You should have received a copy of the GNU General Public License
18 along with GNU Emacs; see the file COPYING. If not, write to
19 the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
20 Boston, MA 02110-1301, USA. */
23 /* The following line tells the configuration script what sort of
24 operating system this machine is likely to run.
29 /* Define how to take a char and sign-extend into an int.
30 On machines where char is signed, this is a no-op. */
32 #define SIGN_EXTEND_CHAR(c) (c)
34 /* Now define a symbol for the cpu type, if your compiler
35 does not define it automatically:
36 Ones defined so far include vax, m68000, ns16000, pyramid,
37 orion, tahoe, APOLLO and many others. */
39 /* BTW: ptx defines _SEQUENT_, i386 */
41 /* Use type int rather than a union, to represent Lisp_Object */
42 /* This is desirable for most machines. */
46 /* crt0.c should use the vax-bsd style of entry, with these dummy args. */
47 /* Already defined. Assume prior definition works for PTX. */
50 #define CRT0_DUMMIES dummy1, dummy2, dummy3,
53 /* Define EXPLICIT_SIGN_EXTEND if XINT must explicitly sign-extend
54 the 24-bit bit field into an int. In other words, if bit fields
57 If you use NO_UNION_TYPE, this flag does not matter. */
59 #define EXPLICIT_SIGN_EXTEND
61 /* Data type of load average, as read out of kmem. */
64 #define LOAD_AVE_TYPE unsigned long
66 /* Convert that into an integer that is 100 for a load average of 1.0 */
71 #define LOAD_AVE_CVT(x) (int) (((double) (x)) * 100.0 / FSCALE)
73 /* Define CANNOT_DUMP on machines where unexec does not work.
74 Then the function dump-emacs will not be defined
75 and temacs will do (load "loadup") automatically unless told otherwise. */
77 /* #define CANNOT_DUMP */
79 /* Define VIRT_ADDR_VARIES if the virtual addresses of
80 pure and impure space as loaded can vary, and even their
81 relative order cannot be relied on.
83 Otherwise Emacs assumes that text space precedes data space,
86 /* #define VIRT_ADDR_VARIES */
88 /* Define NO_REMAP if memory segmentation makes it not work well
89 to change the boundary between the text section and data section
90 when Emacs is dumped. If you define this, the preloaded Lisp
91 code will not be sharable; but that's better than failing completely. */
92 /* On PTX, can't seem to get a valid executable unless NO_REMAP is
93 defined. This did work in the Sequent patched Emacs 18.57. */
99 /* If a valid PTX executable could be dumped without NO_REMAP defined,
100 here's a guess at some defines to make it work. */
103 /* PTX has getpagesize() but it returns 296. Using the default method of
104 including getpagesize.h in unexec.c returns 4096 which seems more
106 #undef HAVE_GETPAGESIZE
108 /* Override magic number for a.out header. */
109 #define EXEC_MAGIC 0411 /* from a.out.h: separated I&D */
111 #define ADJUST_TEXT_SCNHDR_SIZE
112 #define ADJUST_TEXTBASE
114 /* The file sections in the Symmetry a.out must be on 4K boundaries. */
115 /* #define DATA_SECTION_ALIGNMENT (4096-1) */
117 #endif /* ifndef NO_REMAP */
119 /* Avoids a compiler bug. */
120 #define TAHOE_REGISTER_BUG
122 /* (short) negative-int doesn't sign-extend correctly. */
123 #define SHORT_CAST_BUG
125 /* Cause compilations to be done in parallel in ymakefile. */
126 #define MAKE_PARALLEL $&
128 /* Use terminfo library. */
129 #define LIBS_TERMCAP -ltermlib
131 /* arch-tag: 0494629b-7e11-4f6f-865f-62254ac46099
132 (do not change this comment) */