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1.1 root 1: /* m- file for ibm ps/2 aix386.
2: Copyright (C) 1989 Free Software Foundation, Inc.
3:
4: This file is part of GNU Emacs.
5:
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 1, or (at your option)
9: any later version.
10:
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.
15:
16: You should have received a copy of the GNU General Public License
17: along with GNU Emacs; see the file COPYING. If not, write to
18: the Free Software Foundation, 675 Mass Ave, Cambridge, MA 02139, USA. */
19:
20:
21: /* The following three symbols give information on
22: the size of various data types. */
23:
24: #define SHORTBITS 16 /* Number of bits in a short */
25:
26: #define INTBITS 32 /* Number of bits in an int */
27:
28: #define LONGBITS 32 /* Number of bits in a long */
29:
30: /* i386 is not big-endian: lowest numbered byte is least significant. */
31:
32: /* #undef BIG_ENDIAN */
33:
34: /* Define NO_ARG_ARRAY if you cannot take the address of the first of a
35: * group of arguments and treat it as an array of the arguments. */
36:
37: /* #define NO_ARG_ARRAY */
38:
39: /* Define WORD_MACHINE if addresses and such have
40: * to be corrected before they can be used as byte counts. */
41:
42: /* #define WORD_MACHINE */
43:
44: /* Define how to take a char and sign-extend into an int.
45: On machines where char is signed, this is a no-op. */
46:
47: #define SIGN_EXTEND_CHAR(c) ((signed char)(c))
48:
49: /* Now define a symbol for the cpu type, if your compiler
50: does not define it automatically:
51: Ones defined so far include vax, m68000, ns16000, pyramid,
52: orion, tahoe, APOLLO and many others */
53:
54: #define INTEL386
55: #define aix386
56: #undef SYSTEM_TYPE
57: #define SYSTEM_TYPE "ibm-aix-386"
58:
59: /* Use type int rather than a union, to represent Lisp_Object */
60:
61: #define NO_UNION_TYPE
62:
63: /* crt0.c, if it is used, should use the i386-bsd style of entry.
64: with no extra dummy args. On USG and XENIX,
65: NO_REMAP says this isn't used. */
66:
67: #define CRT0_DUMMIES bogus_fp,
68:
69: /* crt0.c should define a symbol `start' and do .globl with a dot. */
70:
71: #define DOT_GLOBAL_START
72:
73: /* USG systems do not actually support the load average,
74: so disable it for them. */
75:
76: /* Define CANNOT_DUMP on machines where unexec does not work.
77: Then the function dump-emacs will not be defined
78: and temacs will do (load "loadup") automatically unless told otherwise. */
79:
80: /* #define CANNOT_DUMP */
81:
82: /* Define VIRT_ADDR_VARIES if the virtual addresses of
83: pure and impure space as loaded can vary, and even their
84: relative order cannot be relied on.
85:
86: Otherwise Emacs assumes that text space precedes data space,
87: numerically. */
88:
89: /* #define VIRT_ADDR_VARIES */
90:
91: /* Define addresses, macros, change some setup for dump */
92:
93: #define NO_REMAP
94: #undef static
95: /* Since NO_REMAP, problem with statics doesn't exist */
96:
97: #ifdef USG5_3
98: #define TEXT_START 0x00000000
99: #else
100: #define TEXT_START 0x00400000
101: #define TEXT_END 0
102: #define DATA_START 0x00800000
103: #define DATA_END 0
104:
105: /* The data segment in this machine always starts at address 0x00800000.
106: An address of data cannot be stored correctly in a Lisp object;
107: we always lose the high bits. We must tell XPNTR to add them back. */
108:
109: #define DATA_SEG_BITS 0x00800000
110: #endif
111:
112: #if 0 /* I refuse to promulgate a recommendation that would make
113: users unable to debug - RMS. */
114: /* delete the following line to foil optimization, enable debugging */
115: #define C_DEBUG_SWITCH -O
116: #endif
117:
118: #define BSTRING
119: #define HAVE_DUP2
120: #define HAVE_GETTIMEOFDAY
121: #define HAVE_SELECT
122: #define HAVE_TIMEVAL
123: #define HAVE_VFORK
124: #define HAVE_SETSID
125: #define HAVE_TCATTR
126:
127: /*
128: * Define SYSV_SYSTEM_DIR to use the V.3 getdents/readir
129: * library functions. Almost, but not quite the same as
130: * the 4.2 functions
131: */
132: #define SYSV_SYSTEM_DIR
133: #define HAVE_CLOSEDIR /* This system, unlike ordinary SYSV, has closedir. */
134:
135: /*
136: * Define NONSYSTEM_DIR_LIBRARY to make Emacs emulate
137: * The 4.2 opendir, etc., library functions.
138: */
139: #undef NONSYSTEM_DIR_LIBRARY
140:
141: /* But don't use utimes() -- it causes SIGSEGV! Use utime() instead. */
142: #define USE_UTIME
143:
144: /* AIX defines FIONREAD, but it does not work. */
145: #define BROKEN_FIONREAD
146:
147: /* This page was added in June 1990. It may be incorrect for some versions
148: of aix, so delete it if it causes trouble. */
149:
150: /* AIX has sigsetmask() */
151: #undef sigsetmask
152:
153: /* AIX386 has BSD4.3 PTYs */
154:
155: #define HAVE_PTYS
156:
157: /* AIX has IPC. It also has sockets, and either can be used for client/server.
158: I would suggest the client/server code be changed to use HAVE_SOCKETS rather
159: than BSD as the conditional if sockets provide any advantages. */
160:
161: #define HAVE_SYSVIPC
162:
163: /* AIX has sockets */
164:
165: #define HAVE_SOCKETS
166: /* #define SKTPAIR */ /* SKTPAIR works, but what is advantage over pipes? */
167:
168: /* Specify the font for X to use. */
169:
170: #define X_DEFAULT_FONT "8x13"
171:
172: /* AIX has a wait.h. */
173:
174: #define HAVE_WAIT_HEADER
175:
176: /* Data type of load average, as read out of kmem. */
177:
178: #define LOAD_AVE_TYPE long /* For AIX (sysV) */
179:
180: /* Convert that into an integer that is 100 for a load average of 1.0 */
181:
182: #define LOAD_AVE_CVT(x) (int) (((double) (x)/65535.0) * 100.0)
183:
184: /* Here override various assumptions in ymakefile */
185:
186: /* Define C_ALLOCA if this machine does not support a true alloca
187: and the one written in C should be used instead.
188: Define HAVE_ALLOCA to say that the system provides a properly
189: working alloca function and it should be used.
190: Define neither one if an assembler-language alloca
191: in the file alloca.s should be used. */
192:
193: #ifdef __GNUC__
194: #define HAVE_ALLOCA
195: #define alloca(n) __builtin_alloca(n)
196: #if __GNUC__ < 2
197: #define LIB_STANDARD /usr/local/lib/gcc-gnulib -lc
198: #endif
199: /* -g fails to work, so it is omitted. */
200: /* tranle says that -fstrength-reduce does not help. */
201: #define C_DEBUG_SWITCH -O
202: #else
203: #define C_ALLOCA
204: #define STACK_DIRECTION -1 /* tell alloca.c which way it grows */
205: #define LIBS_MACHINE -lbsd -lrts
206: #endif
207:
208: #define OBJECTS_MACHINE hftctl.o
209: #define LD_SWITCH_MACHINE -T0x00400000 -K -e start
210:
211: #ifdef USG5_3
212: #define XICCC
213: #define HAVE_GETWD
214: #define HAVE_RENAME
215: #undef LD_SWITCH_MACHINE
216: #define LD_SWITCH_MACHINE -T0x0 -K -e start
217:
218: /* Things defined in s-usg5-3.h that need to be overridden. */
219: #undef NOMULTIPLEJOBS
220: #undef BROKEN_TIOCGETC
221: #undef LIBX10_SYSTEM
222: #undef LIBX11_SYSTEM
223: #endif
224:
225: /* Shared libraries are supported in a patch release of ps/2 1.2.1.
226: If the system has them, the user can turn them on, and this code
227: will make them work. */
228: #ifdef USG_SHARED_LIBRARIES
229: #define ORDINARY_LINK
230: #undef LIB_STANDARD
231: #undef LD_SWITCH_MACHINE
232: #if __GNUC__ > 1
233: #define LD_SWITCH_MACHINE -shlib
234: #endif
235: #endif
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