1 /* machine description file for ibm ps/2 aix386.
2 Copyright (C) 1989 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.
28 Use -opsystem=usg5-3 on AIX 1.2.
29 -opsystem=usg5-2-2 should work on either AIX 1.1 or 1.2, but may not
30 work with certain new X window managers, and may be suboptimal.
33 /* Now define a symbol for the cpu type, if your compiler
34 does not define it automatically:
35 Ones defined so far include vax, m68000, ns16000, pyramid,
36 orion, tahoe, APOLLO and many others */
43 /* crt0.c, if it is used, should use the i386-bsd style of entry.
44 with no extra dummy args. On USG and XENIX,
45 NO_REMAP says this isn't used. */
47 #define CRT0_DUMMIES bogus_fp,
49 /* crt0.c should define a symbol `start' and do .globl with a dot. */
51 #define DOT_GLOBAL_START
53 /* USG systems do not actually support the load average,
54 so disable it for them. */
56 /* Define CANNOT_DUMP on machines where unexec does not work.
57 Then the function dump-emacs will not be defined
58 and temacs will do (load "loadup") automatically unless told otherwise. */
60 /* #define CANNOT_DUMP */
62 /* Define VIRT_ADDR_VARIES if the virtual addresses of
63 pure and impure space as loaded can vary, and even their
64 relative order cannot be relied on.
66 Otherwise Emacs assumes that text space precedes data space,
69 /* #define VIRT_ADDR_VARIES */
71 /* Define addresses, macros, change some setup for dump */
76 #define TEXT_START 0x00000000
78 #define TEXT_START 0x00400000
80 #define DATA_START 0x00800000
85 #if 0 /* I refuse to promulgate a recommendation that would make
86 users unable to debug - RMS. */
87 /* delete the following line to foil optimization, enable debugging */
88 #define C_DEBUG_SWITCH "-O"
91 /* AIX utimes allegedly causes SIGSEGV. */
92 #undef HAVE_UTIMES /* override configuration decision */
94 /* Data type of load average, as read out of kmem. */
96 #define LOAD_AVE_TYPE long /* For AIX (sysV) */
98 /* Convert that into an integer that is 100 for a load average of 1.0 */
100 #define LOAD_AVE_CVT(x) (int) (((double) (x)/65535.0) * 100.0)
102 /* This page was added in June 1990. It may be incorrect for some versions
103 of aix, so delete it if it causes trouble. */
105 /* AIX386 has BSD4.3 PTYs */
109 /* #define SKTPAIR */ /* SKTPAIR works, but what is advantage over pipes? */
111 /* Specify the font for X to use. */
113 #define X_DEFAULT_FONT "8x13"
116 /* sioctl.h should not be included, says bytheway@cs.utah.edu. */
118 /* I'm guessing that that means it doesn't want ptem.h either. */
121 /* Here override various assumptions in ymakefile */
123 /* Define C_ALLOCA if this machine does not support a true alloca
124 and the one written in C should be used instead.
125 Define HAVE_ALLOCA to say that the system provides a properly
126 working alloca function and it should be used.
127 Define neither one if an assembler-language alloca
128 in the file alloca.s should be used. */
132 #define alloca(n) __builtin_alloca(n)
134 #define LIB_STANDARD "/usr/local/lib/gcc-gnulib -lbsd -lrts -lc "
136 /* -g fails to work, so it is omitted. */
137 /* tranle says that -fstrength-reduce does not help. */
138 #define C_DEBUG_SWITCH
141 #define STACK_DIRECTION -1 /* tell alloca.c which way it grows */
142 #define LIBS_MACHINE "-lbsd -lrts"
145 #define OBJECTS_MACHINE "hftctl.o"
146 #define LD_SWITCH_MACHINE "-T0x00400000 -K -e start"
147 #define LIBS_DEBUG /* no -lg on aix ps/2 */
151 #undef LD_SWITCH_MACHINE
152 #define LD_SWITCH_MACHINE "-T0x0 -K -e start"
154 /* Things defined in s-usg5-3.h that need to be overridden. */
155 #undef BROKEN_TIOCGETC
156 #undef BROKEN_TIOCGWINSZ
162 /* Shared libraries are supported in a patch release of ps/2 1.2.1.
163 If the system has them, the user can turn them on, and this code
164 will make them work. */
165 #define USG_SHARED_LIBRARIES /* Assume that by 19's release everyone has this. */
167 #ifdef USG_SHARED_LIBRARIES
168 #define ORDINARY_LINK
170 #undef LD_SWITCH_MACHINE
172 #define LD_SWITCH_MACHINE "-shlib"