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

1.1     ! root        1: /* RTPC AIX machine/system dependent defines
        !             2:    Copyright (C) 1988 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 how to take a char and sign-extend into an int.
        !            42:    On machines where char is signed, this is a no-op.  */
        !            43: 
        !            44: #define SIGN_EXTEND_CHAR(c) ((((int) (c)) << 24) >> 24)
        !            45: 
        !            46: /* Now define a symbol for the cpu type, if your compiler
        !            47:    does not define it automatically.  */
        !            48: 
        !            49: #define IBMRTAIX
        !            50: 
        !            51: #ifndef AIX
        !            52: #define AIX
        !            53: #endif
        !            54: 
        !            55: /* Use type int rather than a union, to represent Lisp_Object */
        !            56: /* This is desirable for most machines.  */
        !            57: 
        !            58: #define NO_UNION_TYPE
        !            59: 
        !            60: /* No load average information appears in the AIX kernel.  VRM has this
        !            61:    info, and if anyone desires they should fix fns.c to get it out of VRM */
        !            62: 
        !            63: /* Define CANNOT_DUMP on machines where unexec does not work.
        !            64:    Then the function dump-emacs will not be defined
        !            65:    and temacs will do (load "loadup") automatically unless told otherwise.  */
        !            66: 
        !            67: /* #define CANNOT_DUMP */
        !            68: 
        !            69: /* Define addresses, macros, change some setup for dump */
        !            70: 
        !            71: #undef COFF
        !            72: #define NO_REMAP
        !            73: #undef static
        !            74:   /* Since NO_REMAP, problem with statics doesn't exist */
        !            75: 
        !            76: #define TEXT_START 0x10000000
        !            77: #define TEXT_END 0
        !            78: #define DATA_START 0x20000000
        !            79: #define DATA_END 0
        !            80: 
        !            81: /* The data segment in this machine always starts at address 0x20000000.
        !            82:    An address of data cannot be stored correctly in a Lisp object;
        !            83:    we always lose the high bits.  We must tell XPNTR to add them back.  */
        !            84: 
        !            85: #define DATA_SEG_BITS 0x20000000
        !            86: 
        !            87: #define N_BADMAG(x) BADMAG(x)
        !            88: #define N_TXTOFF(x) A_TEXTPOS(x)
        !            89: #define N_SYMOFF(x) A_SYMPOS(x)
        !            90: #define A_TEXT_OFFSET(HDR) sizeof(HDR)
        !            91: #define ADJUST_EXEC_HEADER \
        !            92:     unexec_text_start += sizeof(hdr); \
        !            93:     unexec_data_start = ohdr.a_dbase
        !            94: #undef ADDR_CORRECT
        !            95: #define ADDR_CORRECT(x) ((int)(x))
        !            96: 
        !            97: /* Define C_ALLOCA if this machine does not support a true alloca
        !            98:    and the one written in C should be used instead.
        !            99:    Define HAVE_ALLOCA to say that the system provides a properly
        !           100:    working alloca function and it should be used.
        !           101:    Define neither one if an assembler-language alloca
        !           102:    in the file alloca.s should be used.  */
        !           103: 
        !           104: #define C_ALLOCA
        !           105: #define STACK_DIRECTION -1 /* tell alloca.c which way it grows */
        !           106: 
        !           107: /* AIX has PTYs, but they work so differently that they would need
        !           108:    lots of changes in process.c.  Therefore, they are disabled.  */
        !           109: 
        !           110: /* #define HAVE_PTYS */
        !           111: 
        !           112: /* AIX has IPC. It also has sockets, and either can be used for client/server.
        !           113:    I would suggest the client/server code be changed to use HAVE_SOCKETS rather
        !           114:    than BSD as the conditional if sockets provide any advantages. */
        !           115: 
        !           116: #define HAVE_SYSVIPC
        !           117: 
        !           118: /* AIX has sockets */
        !           119: 
        !           120: #define HAVE_SOCKETS
        !           121: /* #define SKTPAIR */ /* SKTPAIR works, but what is advantage over pipes? */
        !           122: 
        !           123: /* Specify the font for X to use.  */
        !           124: 
        !           125: #define X_DEFAULT_FONT "Rom14.500"
        !           126: 
        !           127: /* Here override various assumptions in ymakefile */
        !           128: 
        !           129: /* On AIX 2.2.1, use these definitions instead
        !           130: #define C_SWITCH_MACHINE -I/usr/include -Nn2000
        !           131: #define LIBS_MACHINE -lrts
        !           132: #define LIBX10_MACHINE -lrts
        !           133: #define LIBX11_MACHINE -lrts
        !           134: */
        !           135: 
        !           136: #define C_SWITCH_MACHINE -I/usr/include -I/usr/include/bsd -Nn2000
        !           137: /* need to duplicate -lsock -lbsd -lrts so refs in libX can be resolved   */
        !           138: /* order of lib specs in ymakefile should probably be changed.            */
        !           139: #define LIBS_MACHINE -lsock -lbsd -lrts
        !           140: #define LIBX10_MACHINE -lsock -lbsd -lrts
        !           141: #define LIBX11_MACHINE -lsock -lbsd -lrts
        !           142: 
        !           143: #define OBJECTS_MACHINE hftctl.o
        !           144: #define START_FILES /lib/crt0.o
        !           145: #define LD_SWITCH_MACHINE -n -T0x10000000 -K -e start
        !           146: 
        !           147: #if 0 /* I refuse to promulgate a recommendation that would make
        !           148:          users unable to debug - RMS.  */
        !           149: /* delete the following line to foil optimization, enable debugging */
        !           150: #define C_DEBUG_SWITCH -O
        !           151: #endif
        !           152: 
        !           153: 
        !           154: /* Setup to do some things BSD way - these won't work previous to AIX 2.1.2 */
        !           155: 
        !           156: #define bzero(t,s) (memset((t),(0),(s)))
        !           157: #define bcmp(f,t,s)     (memcmp((t),(f),(s)))
        !           158: #define vfork fork
        !           159: #define killpg( pgrp, sig )  (kill( -(pgrp), (sig) ))
        !           160: 
        !           161: #define BSTRING
        !           162: #define HAVE_DUP2
        !           163: #define HAVE_GETTIMEOFDAY
        !           164: #define HAVE_SELECT
        !           165: #define HAVE_TIMEVAL
        !           166: #define HAVE_VFORK
        !           167: 
        !           168: /* But don't use utimes() -- it causes SIGSEGV!  Use utime() instead. */
        !           169: #define USE_UTIME
        !           170: 
        !           171: /* getwd is in same object module as getcwd in AIX 2.2, but doesn't exist */
        !           172: /* at all in 2.1.2.  So, for compatibility, avoid name collision on 2.2 */
        !           173: #define getwd AIX_getwd
        !           174: 
        !           175: /* AIX defines FIONREAD, but it does not work.  */
        !           176: #define BROKEN_FIONREAD

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