1 /* Machine-dependent configuration for GNU Emacs for AT&T 3b machines.
2 Copyright (C) 1986 Free Software Foundation, Inc.
4 Modified by David Robinson (daver@csvax.caltech.edu) 6/6/86
6 This file is part of GNU Emacs.
8 GNU Emacs is free software; you can redistribute it and/or modify
9 it under the terms of the GNU General Public License as published by
10 the Free Software Foundation; either version 2, or (at your option)
13 GNU Emacs is distributed in the hope that it will be useful,
14 but WITHOUT ANY WARRANTY; without even the implied warranty of
15 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
16 GNU General Public License for more details.
18 You should have received a copy of the GNU General Public License
19 along with XEmacs; see the file COPYING. If not, write to
20 the Free Software Foundation, Inc., 59 Temple Place - Suite 330,
21 Boston, MA 02111-1307, USA. */
23 /* Synched up with: FSF 19.31. */
25 /* The following line tells the configuration script what sort of
26 operating system this machine is likely to run.
27 USUAL-OPSYS="usg5-2-2" */
29 /* Now define a symbol for the cpu type, if your compiler
30 does not define it automatically */
33 /* Data type of load average, as read out of kmem. */
34 /* #define LOAD_AVE_TYPE long */
36 /* Convert that into an integer that is 100 for a load average of 1.0 */
38 /* #define LOAD_AVE_CVT(x) (int) (((double) (x)) * 100.0 / FSCALE) */
40 /* Define CANNOT_DUMP on machines where unexec does not work.
41 Then the function dump-emacs will not be defined
42 and temacs will do (load "loadup") automatically unless told otherwise. */
43 /* #define CANNOT_DUMP */
45 /* Define C_ALLOCA if this machine does not support a true alloca
46 and the one written in C should be used instead.
47 Define HAVE_ALLOCA to say that the system provides a properly
48 working alloca function and it should be used.
49 Define neither one if an assembler-language alloca
50 in the file alloca.s should be used. */
52 /* SysV has alloca in the PW library */
54 #define LIB_STANDARD "-lPW -lc"
57 /* Define NO_REMAP if memory segmentation makes it not work well
58 to change the boundary between the text section and data section
59 when Emacs is dumped. If you define this, the preloaded Lisp
60 code will not be sharable; but that's better than failing completely. */
64 /* #define LD_SWITCH_MACHINE -N */
66 /* Use Terminfo, not Termcap. */
70 /* -O has been observed to make correct C code in Emacs not work.
71 So don't try to use it. */
73 #if u3b2 || u3b5 || u3b15
74 #define C_OPTIMIZE_SWITCH
77 /* Define our page size. */
81 /* The usual definition of XINT, which involves shifting, does not
82 sign-extend properly on this machine. */
84 #define XREALINT(i) (((sign_extend_temp=(i)) & 0x00800000) \
85 ? (sign_extend_temp | 0xFF000000) \
86 : (sign_extend_temp & 0x00FFFFFF))
88 #ifdef emacs /* Don't do this when making xmakefile! */
89 extern int sign_extend_temp;
92 #if u3b2 || u3b5 || u3b15
94 /* On 3b2/5/15, data space has high order bit on. */
96 #define VALMASK (((1<<VALBITS) - 1) | (1 << 31))
97 /* XEmacs: markbit is between type bits and value bits */
98 /* #define XTYPE(a) ((enum Lisp_Type) (((a) >> VALBITS) & GCTYPEMASK)) */
99 #define XTYPE(a) ((enum Lisp_Type) (((a) >> ((VALBITS) + 1)) & GCTYPEMASK))
101 #endif /* 3b2, 3b5 or 3b15 */
106 /* For alloca.c (not actually used, since HAVE_ALLOCA) */
107 #define STACK_DIRECTION 1
109 /* (short) negative-int doesn't sign-extend correctly */
110 #define SHORT_CAST_BUG
112 /* 3B2s with WIN/3B have winsize defined in ptem.h */
117 /* 3b2 does not have memmove, I'm told. */
118 /* It is safe to have no parens around the args in the safe_bcopy call,
119 and parens would screw up the prototype decl for memmove. */
120 #define memmove(d, s, n) safe_bcopy (s, d, n)
122 /* This affects filemode.c. */