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Annotation of GNUtools/emacs/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 free software; you can redistribute it and/or modify
        !             7: it under the terms of the GNU General Public License as published by
        !             8: the Free Software Foundation; either version 1, or (at your option)
        !             9: any later version.
        !            10: 
        !            11: GNU Emacs is distributed in the hope that it will be useful,
        !            12: but WITHOUT ANY WARRANTY; without even the implied warranty of
        !            13: MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
        !            14: GNU General Public License for more details.
        !            15: 
        !            16: You should have received a copy of the GNU General Public License
        !            17: along with GNU Emacs; see the file COPYING.  If not, write to
        !            18: the Free Software Foundation, 675 Mass Ave, Cambridge, MA 02139, USA.  */
        !            19: 
        !            20: 
        !            21: /* The following three symbols give information on
        !            22:  the size of various data types.  */
        !            23: 
        !            24: #define SHORTBITS 16           /* Number of bits in a short */
        !            25: 
        !            26: #define INTBITS 32             /* Number of bits in an int */
        !            27: 
        !            28: #define LONGBITS 32            /* Number of bits in a long */
        !            29: 
        !            30: /* Define BIG_ENDIAN iff lowest-numbered byte in a word
        !            31:    is the most significant byte.  */
        !            32: 
        !            33: #define BIG_ENDIAN
        !            34: 
        !            35: /* Define NO_ARG_ARRAY if you cannot take the address of the first of a
        !            36:  * group of arguments and treat it as an array of the arguments.  */
        !            37: 
        !            38: #define NO_ARG_ARRAY
        !            39: 
        !            40: /* Define WORD_MACHINE if addresses and such have
        !            41:  * to be corrected before they can be used as byte counts.  */
        !            42: 
        !            43: #undef WORD_MACHINE
        !            44: 
        !            45: /* Define how to take a char and sign-extend into an int.
        !            46:    On machines where char is signed, this is a no-op.  */
        !            47: 
        !            48: #define SIGN_EXTEND_CHAR(c) ((signed char)(c))
        !            49: 
        !            50: /* Now define a symbol for the cpu type, if your compiler
        !            51:    does not define it automatically:
        !            52:    Ones defined so far include vax, m68000, ns16000, pyramid,
        !            53:    orion, tahoe, APOLLO and many others */
        !            54: #ifndef mips
        !            55: #      define mips
        !            56: #endif
        !            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: #define EXPLICIT_SIGN_EXTEND
        !            70: 
        !            71: /* Data type of load average, as read out of kmem.  */
        !            72: 
        !            73: #define LOAD_AVE_TYPE long
        !            74: 
        !            75: /* Convert that into an integer that is 100 for a load average of 1.0  */
        !            76: 
        !            77: #define LOAD_AVE_CVT(x) (int) (((double) (x)) * 100.0 / 256.0)
        !            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 text space precedes data space,
        !            90:    numerically.  */
        !            91: 
        !            92: /* #define 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: #ifdef __GNUC__
        !           102: #define HAVE_ALLOCA
        !           103: #else
        !           104: #define C_ALLOCA
        !           105: #endif
        !           106: 
        !           107: /* Define NO_REMAP if memory segmentation makes it not work well
        !           108:    to change the boundary between the text section and data section
        !           109:    when Emacs is dumped.  If you define this, the preloaded Lisp
        !           110:    code will not be sharable; but that's better than failing completely.  */
        !           111: 
        !           112: #define NO_REMAP
        !           113: 
        !           114: /* This machine requires completely different unexec code
        !           115:    which lives in a separate file.  Specify the file name.  */
        !           116: 
        !           117: #define UNEXEC unexmips.o
        !           118: 
        !           119: /* Describe layout of the address space in an executing process.  */
        !           120: 
        !           121: #define TEXT_START 0x400000
        !           122: #define DATA_START 0x800000
        !           123: 
        !           124: /* Alter some of the options used when linking.  */
        !           125: 
        !           126: #ifdef BSD
        !           127: 
        !           128: /* Supposedly the dec machine doesn't have this library.
        !           129:    #define LIBS_MACHINE -lmld  */
        !           130: 
        !           131: #define LD_SWITCH_MACHINE -D 800000
        !           132: #define LIBS_DEBUG
        !           133: 
        !           134: #define LINKER /bsd43/bin/ld
        !           135:   
        !           136: #else /* not BSD */
        !           137: #ifdef NEWSOS5
        !           138: 
        !           139: #define LIBS_MACHINE -lmld
        !           140: #define START_FILES pre-crt0.o /usr/ccs/lib/crt1.o
        !           141: #define LIB_STANDARD -lsocket -lnsl -lc /usr/ccs/lib/crtn.o /usr/ccs/lib/values-Xt.o
        !           142: 
        !           143: #ifdef __GNUC__
        !           144: #define C_DEBUG_SWITCH -g
        !           145: #define C_OPTIMIZE_SWITCH -g -O
        !           146: #define LD_SWITCH_MACHINE -g -Xlinker -D -Xlinker 800000
        !           147: #else
        !           148: #define C_DEBUG_SWITCH -g3
        !           149: #define C_OPTIMIZE_SWITCH -g3
        !           150: #define LD_SWITCH_MACHINE -g3 -D 800000
        !           151: #endif
        !           152: 
        !           153: #else /* not NEWSOS5 */
        !           154: 
        !           155: #define LIBS_MACHINE -lmld
        !           156: #define LD_SWITCH_MACHINE -D 800000 -g3
        !           157: #define START_FILES pre-crt0.o /usr/lib/crt1.o
        !           158: #define LIB_STANDARD -lbsd -lc /usr/lib/crtn.o
        !           159: #define LIBS_TERMCAP -lcurses
        !           160: 
        !           161: #define C_SWITCH_MACHINE -I/usr/include/bsd
        !           162: #define C_DEBUG_SWITCH -O -g3
        !           163: 
        !           164: #if defined(HAVE_X_WINDOWS) && defined(HAVE_X11)
        !           165: #define HAVE_VFORK             /* Graciously provided by libX.a */
        !           166: #endif
        !           167: 
        !           168: #endif /* not NEWSOS5 */
        !           169: #endif /* not BSD */
        !           170: 
        !           171: /* The standard definitions of these macros would work ok,
        !           172:    but these are faster because the constants are short.  */
        !           173: 
        !           174: #define XUINT(a) (((unsigned)(a) << (INTBITS-VALBITS)) >> (INTBITS-VALBITS))
        !           175: 
        !           176: #define XSET(var, type, ptr)                                           \
        !           177:   ((var) =                                                             \
        !           178:    ((int)(type) << VALBITS)                                            \
        !           179:    + (((unsigned) (ptr) << (INTBITS-VALBITS)) >> (INTBITS-VALBITS)))
        !           180: 
        !           181: #define XSETINT(a, b)  XSET(a, XTYPE(a), b)
        !           182: #define XSETUINT(a, b) XSET(a, XTYPE(a), b)
        !           183: #define XSETPNTR(a, b) XSET(a, XTYPE(a), b)
        !           184: 
        !           185: #define XUNMARK(a)                                                     \
        !           186:   ((a) =                                                               \
        !           187:    (((unsigned)(a) << (INTBITS-GCTYPEBITS-VALBITS))                    \
        !           188:     >> (INTBITS-GCTYPEBITS-VALBITS)))
        !           189: 
        !           190: #ifndef NEWSOS5
        !           191: #ifdef USG
        !           192: 
        !           193: /* Cancel certain parts of standard sysV support.  */
        !           194: #undef NONSYSTEM_DIR_LIBRARY
        !           195: #define SYSV_SYSTEM_DIR
        !           196: #undef static
        !           197: 
        !           198: /* Don't try to use SIGIO or FIONREAD even though they are defined.  */
        !           199: #undef SIGIO
        !           200: #define BROKEN_FIONREAD
        !           201: 
        !           202: /* Describe special kernel features.  */
        !           203: 
        !           204: #define HAVE_SYSVIPC
        !           205: 
        !           206: #define HAVE_TIMEVAL
        !           207: #if defined(emacs) && !defined(INHIBIT_BSD_TIME)
        !           208: #include <bsd/sys/time.h>
        !           209: #endif
        !           210: 
        !           211: /* #define HAVE_SELECT
        !           212:    The `select' in the system won't work for pipes,
        !           213:    so don't use it.  */
        !           214: 
        !           215: #define HAVE_DUP2
        !           216: #define HAVE_GETWD
        !           217: #define HAVE_GETTIMEOFDAY
        !           218: 
        !           219: #define HAVE_PTYS
        !           220: #define HAVE_SOCKETS
        !           221: 
        !           222: #undef NOMULTIPLEJOBS
        !           223: #define utimes utime  /* Someone should check this.  */
        !           224: 
        !           225: /* ??? */
        !           226: #define IRIS
        !           227: 
        !           228: #endif /* USG */
        !           229: 
        !           230: #ifdef BSD
        !           231: #define COFF
        !           232: #define TERMINFO
        !           233: #undef MAIL_USE_FLOCK  /* Someone should check this.  */
        !           234: #undef HAVE_UNION_WAIT
        !           235: #endif /* BSD */
        !           236: 
        !           237: #endif /* not NEWSOS5 */
        !           238: 
        !           239: /* Load average requires special crocks.  Version 19 has them.
        !           240:    For now, this avoids a bug.  */
        !           241: #undef LOAD_AVE_TYPE

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