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