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1.1 root 1: /* m-alliant.h Alliant machine running system version 2 or 3.
2: Copyright (C) 1985, 1986, 1987 Free Software Foundation, Inc.
3: Note that for version 1 of the Alliant system
4: you should use m-alliant1.h instead of this file.
5: Use m-alliant4.h for version 4.
6:
7: This file is part of GNU Emacs.
8:
9: GNU Emacs is free software; you can redistribute it and/or modify
10: it under the terms of the GNU General Public License as published by
11: the Free Software Foundation; either version 1, or (at your option)
12: any later version.
13:
14: GNU Emacs is distributed in the hope that it will be useful,
15: but WITHOUT ANY WARRANTY; without even the implied warranty of
16: MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
17: GNU General Public License for more details.
18:
19: You should have received a copy of the GNU General Public License
20: along with GNU Emacs; see the file COPYING. If not, write to
21: the Free Software Foundation, 675 Mass Ave, Cambridge, MA 02139, USA. */
22:
23:
24: /* The following three symbols give information on
25: the size of various data types. */
26:
27: #define SHORTBITS 16 /* Number of bits in a short */
28:
29: #define INTBITS 32 /* Number of bits in an int */
30:
31: #define LONGBITS 32 /* Number of bits in a long */
32:
33: /* Define BIG_ENDIAN iff lowest-numbered byte in a word
34: is the most significant byte. */
35:
36: #define BIG_ENDIAN
37:
38: /* Define NO_ARG_ARRAY if you cannot take the address of the first of a
39: * group of arguments and treat it as an array of the arguments. */
40:
41: #ifdef ALLIANT_1
42: #define NO_ARG_ARRAY
43: #endif
44:
45: /* Define WORD_MACHINE if addresses and such have
46: * to be corrected before they can be used as byte counts. */
47:
48: #undef WORD_MACHINE
49:
50: /* Define how to take a char and sign-extend into an int.
51: On machines where char is signed, this is a no-op. */
52:
53: #define SIGN_EXTEND_CHAR(c) (c)
54:
55: /* Now define a symbol for the cpu type, if your compiler
56: does not define it automatically:
57: vax, m68000, ns16000, pyramid, orion, tahoe and APOLLO
58: are the ones defined so far. */
59:
60: #define ALLIANT
61:
62: /* Use type int rather than a union, to represent Lisp_Object */
63: /* This is desirable for most machines. */
64:
65: #define NO_UNION_TYPE
66:
67: /* Define EXPLICIT_SIGN_EXTEND if XINT must explicitly sign-extend
68: the 24-bit bit field into an int. In other words, if bit fields
69: are always unsigned.
70:
71: If you use NO_UNION_TYPE, this flag does not matter. */
72: /* On Alliants, bitfields are unsigned. */
73:
74: #define EXPLICIT_SIGN_EXTEND
75:
76: /* No load average information available for Alliants. */
77:
78: #undef LOAD_AVE_TYPE
79: #undef LOAD_AVE_CVT
80:
81: /* Define CANNOT_DUMP on machines where unexec does not work.
82: Then the function dump-emacs will not be defined
83: and temacs will do (load "loadup") automatically unless told otherwise. */
84:
85: #undef CANNOT_DUMP
86:
87: /* Define VIRT_ADDR_VARIES if the virtual addresses of
88: pure and impure space as loaded can vary, and even their
89: relative order cannot be relied on.
90:
91: Otherwise Emacs assumes that text space precedes data space,
92: numerically. */
93:
94: #undef VIRT_ADDR_VARIES
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: #undef C_ALLOCA
104: #define HAVE_ALLOCA
105:
106: #ifdef ALLIANT_1
107: #define C_ALLOCA
108: #undef HAVE_ALLOCA
109: #endif /* ALLIANT_1 */
110:
111: /* Define NO_REMAP if memory segmentation makes it not work well
112: to change the boundary between the text section and data section
113: when Emacs is dumped. If you define this, the preloaded Lisp
114: code will not be sharable; but that's better than failing completely. */
115: /* Actually, Alliant CONCENTRIX does paging "right":
116: data pages are copy-on-write, which means that the pure data areas
117: are shared automatically and remapping is not necessary. */
118:
119: #define NO_REMAP
120:
121: /* Alliant needs special crt0.o because system version is not reentrant */
122:
123: #define START_FILES crt0.o
124:
125: /* Alliant dependent code for dumping executing image.
126: See crt0.c code for alliant. */
127:
128: #define ADJUST_EXEC_HEADER {\
129: extern int _curbrk, _setbrk;\
130: _setbrk = _curbrk;\
131: hdr.a_bss_addr = bss_start;\
132: unexec_text_start = hdr.a_text_addr;}
133:
134: /* cc screws up on long names. Try making cpp replace them. */
135:
136: #ifdef ALLIANT_1
137: #define Finsert_abbrev_table_description Finsert_abbrev_table_descrip
138: #define internal_with_output_to_temp_buffer internal_with_output_to_tem
139: #endif
140:
141: /* "vector" is a typedef in /usr/include/machine/reg.h, so its use as
142: a variable name causes errors when compiling under ANSI C. */
143:
144: #define vector xxvector
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