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Annotation of GNUtools/emacs/src/m-all2800.h, revision 1.1

1.1     ! root        1: /* m-alliant-2800.h  Alliant FX/2800 machine running Concentrix 2800.
        !             2:    Copyright (C) 1990 Free Software Foundation, Inc.
        !             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: #undef 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: #define 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: 
        !            56: #define ALLIANT
        !            57: #define ALLIANT_2800
        !            58: #define sun                    /* Use X support for Sun keyboard stuff. */
        !            59: #define C_OPTIMIZE_SWITCH -Og  /* No concurrent code allowed here. */
        !            60: #define VALBITS 26
        !            61: #define GCTYPEBITS 5
        !            62: 
        !            63: /* Use type int rather than a union, to represent Lisp_Object */
        !            64: /* This is desirable for most machines.  */
        !            65: 
        !            66: #define NO_UNION_TYPE
        !            67: 
        !            68: /* Define EXPLICIT_SIGN_EXTEND if XINT must explicitly sign-extend
        !            69:    the 24-bit bit field into an int.  In other words, if bit fields
        !            70:    are always unsigned.
        !            71: 
        !            72:    If you use NO_UNION_TYPE, this flag does not matter.  */
        !            73: /* On Alliants, bitfields are unsigned. */
        !            74: 
        !            75: #define EXPLICIT_SIGN_EXTEND
        !            76: 
        !            77: /* Concentrix uses a different kernel symbol for load average. */
        !            78: 
        !            79: #undef  LDAV_SYMBOL            /* Undo definition in s-bsd4-2.h */
        !            80: #define LDAV_SYMBOL "_Loadavg"
        !            81: 
        !            82: /* Data type of load average, as read out of kmem.  */
        !            83: 
        !            84: #define LOAD_AVE_TYPE long
        !            85: 
        !            86: /* Convert that into an integer that is 100 for a load average of 1.0  */
        !            87: 
        !            88: #define LOAD_AVE_CVT(x) (x * 100 / LOADAVG_SCALE)
        !            89: 
        !            90: /* include <sys/param.h> for the definition of LOADAVG_SCALE, and also
        !            91:    LOADAVG_SIZE, the number of items in the Loadavg array. */
        !            92: 
        !            93: /* Define CANNOT_DUMP on machines where unexec does not work.
        !            94:    Then the function dump-emacs will not be defined
        !            95:    and temacs will do (load "loadup") automatically unless told otherwise.  */
        !            96: 
        !            97: /* #define CANNOT_DUMP */
        !            98: #define UNEXEC unexfx2800.o
        !            99: #define LIBS_MACHINE -lalliant
        !           100: 
        !           101: /* Define VIRT_ADDR_VARIES if the virtual addresses of
        !           102:    pure and impure space as loaded can vary, and even their
        !           103:    relative order cannot be relied on.
        !           104: 
        !           105:    Otherwise Emacs assumes that text space precedes data space,
        !           106:    numerically.  */
        !           107: 
        !           108: #undef VIRT_ADDR_VARIES
        !           109: 
        !           110: /* Define C_ALLOCA if this machine does not support a true alloca
        !           111:    and the one written in C should be used instead.
        !           112:    Define HAVE_ALLOCA to say that the system provides a properly
        !           113:    working alloca function and it should be used.
        !           114:    Define neither one if an assembler-language alloca
        !           115:    in the file alloca.s should be used.  */
        !           116: 
        !           117: #undef C_ALLOCA
        !           118: #define HAVE_ALLOCA
        !           119: 
        !           120: /* Define NO_REMAP if memory segmentation makes it not work well
        !           121:    to change the boundary between the text section and data section
        !           122:    when Emacs is dumped.  If you define this, the preloaded Lisp
        !           123:    code will not be sharable; but that's better than failing completely.  */
        !           124: /* Actually, Alliant CONCENTRIX does paging "right":
        !           125:    data pages are copy-on-write, which means that the pure data areas
        !           126:    are shared automatically and remapping is not necessary.  */
        !           127: 
        !           128: #define NO_REMAP
        !           129: 
        !           130: /* Alliant needs special crt0.o because system version is not reentrant */
        !           131: 
        !           132: #define START_FILES crt0.o
        !           133: 
        !           134: /* Alliant dependent code for dumping executing image.
        !           135:    See crt0.c code for alliant.  */
        !           136: 
        !           137: #define ADJUST_EXEC_HEADER {\
        !           138: extern int _curbrk, _setbrk;\
        !           139: _setbrk = _curbrk;\
        !           140: hdr.a_bss_addr = bss_start;\
        !           141: unexec_text_start = hdr.a_text_addr;}
        !           142: 
        !           143: /* POSIX Compatibility */
        !           144: /* Use System V.4 style getdents/readdir <dirent.h> for 2.2 and up. */
        !           145: #define SYSV_SYSTEM_DIR
        !           146: #define HAVE_CLOSEDIR

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