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Annotation of 43BSD/contrib/emacs/src/m-plexus.h, revision 1.1.1.1

1.1       root        1: /* m- file for the Plexus running System V.2.
                      2:    Copyright (C) 1985 Richard M. Stallman.
                      3: 
                      4: This file is part of GNU Emacs.
                      5: 
                      6: GNU Emacs is distributed in the hope that it will be useful,
                      7: but WITHOUT ANY WARRANTY.  No author or distributor
                      8: accepts responsibility to anyone for the consequences of using it
                      9: or for whether it serves any particular purpose or works at all,
                     10: unless he says so in writing.  Refer to the GNU Emacs General Public
                     11: License for full details.
                     12: 
                     13: Everyone is granted permission to copy, modify and redistribute
                     14: GNU Emacs, but only under the conditions described in the
                     15: GNU Emacs General Public License.   A copy of this license is
                     16: supposed to have been given to you along with GNU Emacs so you
                     17: can know your rights and responsibilities.  It should be in a
                     18: file named COPYING.  Among other things, the copyright notice
                     19: and this notice must be preserved on all copies.  */
                     20: 
                     21: 
                     22: /* The following three symbols give information on
                     23:  the size of various data types.  */
                     24: 
                     25: #define SHORTBITS 16           /* Number of bits in a short */
                     26: 
                     27: #define INTBITS 32             /* Number of bits in an int */
                     28: 
                     29: #define LONGBITS 32            /* Number of bits in a long */
                     30: 
                     31: /* Define BIG_ENDIAN iff lowest-numbered byte in a word
                     32:    is the most significant byte.  */
                     33: 
                     34: #define BIG_ENDIAN
                     35: 
                     36: /* Define NO_ARG_ARRAY if you cannot take the address of the first of a
                     37:  * group of arguments and treat it as an array of the arguments.  */
                     38: 
                     39: #undef NO_ARG_ARRAY
                     40: 
                     41: /* Define WORD_MACHINE if addresses and such have
                     42:  * to be corrected before they can be used as byte counts.  */
                     43: 
                     44: #undef WORD_MACHINE
                     45: 
                     46: /* Define how to take a char and sign-extend into an int.
                     47:    On machines where char is signed, this is a no-op.  */
                     48: 
                     49: #define SIGN_EXTEND_CHAR(c) (c)
                     50: 
                     51: /* Now define a symbol for the cpu type, if your compiler
                     52:    does not define it automatically:
                     53:    vax, m68000, ns16000, pyramid, orion, tahoe and APOLLO
                     54:    are the ones defined so far.  */
                     55: /* Plexus predefines m68 instead of m68000. */
                     56: #define m68000 m68
                     57: 
                     58: /* Use type int rather than a union, to represent Lisp_Object */
                     59: /* This is desirable for most machines.  */
                     60: 
                     61: #define NO_UNION_TYPE
                     62: 
                     63: /* Define EXPLICIT_SIGN_EXTEND if XINT must explicitly sign-extend
                     64:    the 24-bit bit field into an int.  In other words, if bit fields
                     65:    are always unsigned.
                     66: 
                     67:    If you use NO_UNION_TYPE, this flag does not matter.  */
                     68: 
                     69: #undef EXPLICIT_SIGN_EXTEND
                     70: 
                     71: /* Data type of load average, as read out of kmem.  */
                     72: 
                     73: #undef LOAD_AVE_TYPE
                     74: 
                     75: /* Convert that into an integer that is 100 for a load average of 1.0  */
                     76: 
                     77: #undef LOAD_AVE_CVT
                     78: 
                     79: /* Define CANNOT_DUMP on machines where unexec does not work.
                     80:    Then the function dump-emacs will not be defined
                     81:    and temacs will do (load "loadup") automatically unless told otherwise.  */
                     82: 
                     83: #undef CANNOT_DUMP
                     84: 
                     85: /* Define VIRT_ADDR_VARIES if the virtual addresses of
                     86:    pure and impure space as loaded can vary, and even their
                     87:    relative order cannot be relied on.
                     88: 
                     89:    Otherwise Emacs assumes that data space precedes text space,
                     90:    numerically.  */
                     91: 
                     92: #undef VIRT_ADDR_VARIES
                     93: 
                     94: /* Define C_ALLOCA if this machine does not support a true alloca
                     95:    and the one written in C should be used instead.
                     96:    Define HAVE_ALLOCA to say that the system provides a properly
                     97:    working alloca function and it should be used.
                     98:    Define neither one if an assembler-language alloca
                     99:    in the file alloca.s should be used.  */
                    100: 
                    101: #undef C_ALLOCA
                    102: #define HAVE_ALLOCA
                    103: 
                    104: /* Define NO_REMAP if memory segmentation makes it not work well
                    105:    to change the boundary between the text section and data section
                    106:    when Emacs is dumped.  If you define this, the preloaded Lisp
                    107:    code will not be sharable; but that's better than failing completely.  */
                    108: 
                    109: #undef NO_REMAP
                    110: 
                    111: /* Use the PW library, which contains alloca.  */
                    112: 
                    113: #define LIB_STANDARD -lPW -lc
                    114: 
                    115: /* Use the BOGUS mechanism in crt0.c. */
                    116: 
                    117: #define BOGUS zero1, zero2,
                    118: 
                    119: /* This triggers some stuff to avoid a compiler bug */
                    120: 
                    121: #define TAHOE_REGISTER_BUG

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