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Annotation of 43BSDReno/contrib/emacs-18.55/src/m-mips.h, revision 1.1

1.1     ! root        1: /* m- file for Mips machines.
        !             2:    Copyright (C) 1987 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: #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: #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) ((signed char)(c))
        !            50: 
        !            51: /* Now define a symbol for the cpu type, if your compiler
        !            52:    does not define it automatically:
        !            53:    Ones defined so far include vax, m68000, ns16000, pyramid,
        !            54:    orion, tahoe, APOLLO and many others */
        !            55: #ifndef mips
        !            56: #      define mips
        !            57: #endif
        !            58: 
        !            59: /* Use type int rather than a union, to represent Lisp_Object */
        !            60: /* This is desirable for most machines.  */
        !            61: 
        !            62: #define NO_UNION_TYPE
        !            63: 
        !            64: /* Define EXPLICIT_SIGN_EXTEND if XINT must explicitly sign-extend
        !            65:    the 24-bit bit field into an int.  In other words, if bit fields
        !            66:    are always unsigned.
        !            67: 
        !            68:    If you use NO_UNION_TYPE, this flag does not matter.  */
        !            69: 
        !            70: #define EXPLICIT_SIGN_EXTEND
        !            71: 
        !            72: /* Data type of load average, as read out of kmem.  */
        !            73: 
        !            74: #define LOAD_AVE_TYPE long
        !            75: 
        !            76: /* Convert that into an integer that is 100 for a load average of 1.0  */
        !            77: 
        !            78: #define LOAD_AVE_CVT(x) (int) (((double) (x)) * 100.0 / 256.0)
        !            79: 
        !            80: /* Define CANNOT_DUMP on machines where unexec does not work.
        !            81:    Then the function dump-emacs will not be defined
        !            82:    and temacs will do (load "loadup") automatically unless told otherwise.  */
        !            83: 
        !            84: #undef CANNOT_DUMP
        !            85: 
        !            86: /* Define VIRT_ADDR_VARIES if the virtual addresses of
        !            87:    pure and impure space as loaded can vary, and even their
        !            88:    relative order cannot be relied on.
        !            89: 
        !            90:    Otherwise Emacs assumes that text space precedes data space,
        !            91:    numerically.  */
        !            92: 
        !            93: /* #define VIRT_ADDR_VARIES */
        !            94: 
        !            95: /* Define C_ALLOCA if this machine does not support a true alloca
        !            96:    and the one written in C should be used instead.
        !            97:    Define HAVE_ALLOCA to say that the system provides a properly
        !            98:    working alloca function and it should be used.
        !            99:    Define neither one if an assembler-language alloca
        !           100:    in the file alloca.s should be used.  */
        !           101: 
        !           102: #define C_ALLOCA
        !           103: /* #define HAVE_ALLOCA */
        !           104: 
        !           105: /* Define NO_REMAP if memory segmentation makes it not work well
        !           106:    to change the boundary between the text section and data section
        !           107:    when Emacs is dumped.  If you define this, the preloaded Lisp
        !           108:    code will not be sharable; but that's better than failing completely.  */
        !           109: 
        !           110: #define NO_REMAP
        !           111: 
        !           112: /* This machine requires completely different unexec code
        !           113:    which lives in a separate file.  Specify the file name.  */
        !           114: 
        !           115: #define UNEXEC unexmips.o
        !           116: 
        !           117: /* Describe layout of the address space in an executing process.  */
        !           118: 
        !           119: #define TEXT_START 0x400000
        !           120: #define DATA_START 0x800000
        !           121: 
        !           122: /* Alter some of the options used when linking.  */
        !           123: 
        !           124: #ifdef BSD
        !           125: 
        !           126: /* Supposedly the dec machine doesn't have this library.
        !           127:    #define LIBS_MACHINE -lmld  */
        !           128: 
        !           129: #define LD_SWITCH_MACHINE -D 800000
        !           130: #define LIBS_DEBUG
        !           131: 
        !           132: #else
        !           133: 
        !           134: #define LIBS_MACHINE -lmld
        !           135: #define LD_SWITCH_MACHINE -D 800000 -g3
        !           136: #define START_FILES pre-crt0.o /usr/lib/crt1.o
        !           137: #define LIB_STANDARD -lbsd -lc /usr/lib/crtn.o
        !           138: #define LIBS_TERMCAP -lcurses
        !           139: 
        !           140: #define C_SWITCH_SYSTEM -I/usr/include/bsd
        !           141: #define C_DEBUG_SWITCH -O -g3
        !           142: 
        !           143: #if defined(HAVE_X_WINDOWS) && defined(HAVE_X11)
        !           144: #define HAVE_VFORK             /* Graciously provided by libX.a */
        !           145: #endif
        !           146: 
        !           147: #endif
        !           148: 
        !           149: /* The standard definitions of these macros would work ok,
        !           150:    but these are faster because the constants are short.  */
        !           151: 
        !           152: #define XUINT(a) (((unsigned)(a) << INTBITS-VALBITS) >> INTBITS-VALBITS)
        !           153: 
        !           154: #define XSET(var, type, ptr) \
        !           155:    ((var) = ((int)(type) << VALBITS) + (((unsigned) (ptr) << INTBITS-VALBITS) >> INTBITS-VALBITS))
        !           156: 
        !           157: #define XSETINT(a, b)  XSET(a, XTYPE(a), b)
        !           158: #define XSETUINT(a, b) XSET(a, XTYPE(a), b)
        !           159: #define XSETPNTR(a, b) XSET(a, XTYPE(a), b)
        !           160: 
        !           161: #define XUNMARK(a) ((a) = (((unsigned)(a) << INTBITS-GCTYPEBITS-VALBITS) >> INTBITS-GCTYPEBITS-VALBITS))
        !           162: 
        !           163: #ifdef USG
        !           164: 
        !           165: /* Cancel certain parts of standard sysV.3 support.  */
        !           166: #undef SYSV_SYSTEM_DIR
        !           167: #undef static
        !           168: 
        !           169: /* Don't try to use SIGIO or FIONREAD even though they are defined.  */
        !           170: #undef SIGIO
        !           171: #define BROKEN_FIONREAD
        !           172: 
        !           173: /* Describe special kernel features.  */
        !           174: 
        !           175: #define HAVE_SYSVIPC
        !           176: 
        !           177: #define HAVE_TIMEVAL
        !           178: #if defined(emacs)
        !           179: #include <bsd/sys/time.h>
        !           180: #endif
        !           181: 
        !           182: /* #define HAVE_SELECT
        !           183:    The `select' in the system won't work for pipes,
        !           184:    so don't use it.  */
        !           185: 
        !           186: #define HAVE_DUP2
        !           187: #define HAVE_GETWD
        !           188: #define HAVE_GETTIMEOFDAY
        !           189: 
        !           190: #define HAVE_PTYS
        !           191: #define HAVE_SOCKETS
        !           192: #define BSTRING
        !           193: 
        !           194: /* ??? */
        !           195: #define IRIS
        !           196: 
        !           197: #endif

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