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1.1 root 1: /* RTPC AIX machine/system dependent defines
2: Copyright (C) 1988 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: /* Define BIG_ENDIAN iff lowest-numbered byte in a word
31: is the most significant byte. */
32:
33: #define BIG_ENDIAN
34:
35: /* Define NO_ARG_ARRAY if you cannot take the address of the first of a
36: * group of arguments and treat it as an array of the arguments. */
37:
38: #define NO_ARG_ARRAY
39:
40: /* Define how to take a char and sign-extend into an int.
41: On machines where char is signed, this is a no-op. */
42:
43: #define SIGN_EXTEND_CHAR(c) ((((int) (c)) << 24) >> 24)
44:
45: /* Now define a symbol for the cpu type, if your compiler
46: does not define it automatically. */
47:
48: #define IBMRTAIX
49:
50: #ifndef AIX
51: #define AIX
52: #endif
53:
54: /* Use type int rather than a union, to represent Lisp_Object */
55: /* This is desirable for most machines. */
56:
57: #define NO_UNION_TYPE
58:
59: /* No load average information appears in the AIX kernel. VRM has this
60: info, and if anyone desires they should fix fns.c to get it out of VRM */
61:
62: /* Define CANNOT_DUMP on machines where unexec does not work.
63: Then the function dump-emacs will not be defined
64: and temacs will do (load "loadup") automatically unless told otherwise. */
65:
66: /* #define CANNOT_DUMP */
67:
68: /* Define addresses, macros, change some setup for dump */
69:
70: #undef COFF
71: #define NO_REMAP
72: #undef static
73: /* Since NO_REMAP, problem with statics doesn't exist */
74:
75: #define TEXT_START 0x10000000
76: #define TEXT_END 0
77: #define DATA_START 0x20000000
78: #define DATA_END 0
79:
80: /* The data segment in this machine always starts at address 0x20000000.
81: An address of data cannot be stored correctly in a Lisp object;
82: we always lose the high bits. We must tell XPNTR to add them back. */
83:
84: #define DATA_SEG_BITS 0x20000000
85:
86: #define N_BADMAG(x) BADMAG(x)
87: #define N_TXTOFF(x) A_TEXTPOS(x)
88: #define N_SYMOFF(x) A_SYMPOS(x)
89: #define A_TEXT_OFFSET(HDR) sizeof(HDR)
90: #define ADJUST_EXEC_HEADER \
91: unexec_text_start += sizeof(hdr); \
92: unexec_data_start = ohdr.a_dbase
93: #undef ADDR_CORRECT
94: #define ADDR_CORRECT(x) ((int)(x))
95:
96: /* Define C_ALLOCA if this machine does not support a true alloca
97: and the one written in C should be used instead.
98: Define HAVE_ALLOCA to say that the system provides a properly
99: working alloca function and it should be used.
100: Define neither one if an assembler-language alloca
101: in the file alloca.s should be used. */
102:
103: #define C_ALLOCA
104: #define STACK_DIRECTION -1 /* tell alloca.c which way it grows */
105:
106:
107: /* AIX has PTYs, so define here, along with defines needed to make them work. */
108: /* AIX has one problem related to PTYs though: SIGHUP is seen by the parent */
109: /* along with SIGCHLD when the child dies. Thus we need to ignore SIGHUP */
110: /* once a process is begun on a PTY. EMACS may not go away when its tty */
111: /* goes away because of this -- if this is a problem, either comment out the */
112: /* def of HAVE_PTYS below, or set process-connection-type to nil in .emacs. */
113:
114: #define HAVE_PTYS
115: #define PTY_ITERATION for (i=0; i<256; i++)
116: #define PTY_NAME_SPRINTF sprintf (pty_name, "/dev/ptc%d", i);
117: #define PTY_TTY_NAME_SPRINTF \
118: /* Check that server side not already open */ \
119: if ((ioctl(fd, PTYSTATUS, 0) & 0xFFFF) != 0) { \
120: close(fd); \
121: continue; \
122: } \
123: sprintf (pty_name, "/dev/pts%d", i);
124:
125: /* TIOCNOTTY isn't needed on AIX, but the rest of the conditionalized code
126: in process.c does properly begin a new process group if we fake this out.
127: On AIX 2.2 TIOCNOTTY is defined in termio.h, and this will be overriden
128: by that definition appropriately. */
129:
130: #define TIOCNOTTY IOCTYPE
131:
132: /* AIX has IPC. It also has sockets, and either can be used for client/server.
133: I would suggest the client/server code be changed to use HAVE_SOCKETS rather
134: than BSD as the conditional if sockets provide any advantages. */
135:
136: #define HAVE_SYSVIPC
137:
138: /* AIX has sockets */
139:
140: #define HAVE_SOCKETS
141: /* #define SKTPAIR */ /* SKTPAIR works, but what is advantage over pipes? */
142:
143: /* Specify the font for X to use. */
144:
145: #define X_DEFAULT_FONT "Rom14.500"
146:
147: /* Here override various assumptions in ymakefile */
148:
149: /* On AIX 2.2.1, use these definitions instead
150: #define C_SWITCH_MACHINE -I/usr/include -Nn2000
151: #define LIBS_MACHINE -lrts
152: #define LIBX10_MACHINE -lrts
153: #define LIBX11_MACHINE -lrts
154: */
155:
156: #define C_SWITCH_MACHINE -I/usr/include -I/usr/include/bsd -Nn2000
157: /* need to duplicate -lsock -lbsd -lrts so refs in libX can be resolved */
158: /* order of lib specs in ymakefile should probably be changed. */
159: #define LIBS_MACHINE -lsock -lbsd -lrts
160: #define LIBX10_MACHINE -lsock -lbsd -lrts
161: #define LIBX11_MACHINE -lsock -lbsd -lrts
162:
163: #define OBJECTS_MACHINE hftctl.o
164: #define START_FILES /lib/crt0.o
165: #define LD_SWITCH_MACHINE -n -T0x10000000 -K -e start
166:
167: #if 0 /* I refuse to promulgate a recommendation that would make
168: users unable to debug - RMS. */
169: /* delete the following line to foil optimization, enable debugging */
170: #define C_DEBUG_SWITCH -O
171: #endif
172:
173:
174: /* Setup to do some things BSD way - these won't work previous to AIX 2.1.2 */
175:
176: #define bzero(t,s) (memset((t),(0),(s)))
177: #define bcmp(f,t,s) (memcmp((t),(f),(s)))
178: #define vfork fork
179: #define killpg( pgrp, sig ) (kill( -(pgrp), (sig) ))
180:
181: #define BSTRING
182: #define HAVE_DUP2
183: #define HAVE_GETTIMEOFDAY
184: #define HAVE_SELECT
185: #define HAVE_TIMEVAL
186: #define HAVE_VFORK
187:
188: /* But don't use utimes() -- it causes SIGSEGV! Use utime() instead. */
189: #define USE_UTIME
190:
191: /* getwd is in same object module as getcwd in AIX 2.2, but doesn't exist */
192: /* at all in 2.1.2. So, for compatibility, avoid name collision on 2.2 */
193: #define getwd AIX_getwd
194:
195: /* AIX defines FIONREAD, but it does not work. */
196: #define BROKEN_FIONREAD
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