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Annotation of GNUtools/emacs/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 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 how to take a char and sign-extend into an int.
        !            41:    On machines where char is signed, this is a no-op.  */
        !            42: 
        !            43: #define SIGN_EXTEND_CHAR(c) ((((int) (c)) << 24) >> 24)
        !            44: 
        !            45: /* Now define a symbol for the cpu type, if your compiler
        !            46:    does not define it automatically.  */
        !            47: 
        !            48: #define IBMRTAIX
        !            49: 
        !            50: #ifndef AIX
        !            51: #define AIX
        !            52: #endif
        !            53: 
        !            54: /* Use type int rather than a union, to represent Lisp_Object */
        !            55: /* This is desirable for most machines.  */
        !            56: 
        !            57: #define NO_UNION_TYPE
        !            58: 
        !            59: /* No load average information appears in the AIX kernel.  VRM has this
        !            60:    info, and if anyone desires they should fix fns.c to get it out of VRM */
        !            61: 
        !            62: /* Define CANNOT_DUMP on machines where unexec does not work.
        !            63:    Then the function dump-emacs will not be defined
        !            64:    and temacs will do (load "loadup") automatically unless told otherwise.  */
        !            65: 
        !            66: /* #define CANNOT_DUMP */
        !            67: 
        !            68: /* Define addresses, macros, change some setup for dump */
        !            69: 
        !            70: #undef COFF
        !            71: #define NO_REMAP
        !            72: #undef static
        !            73:   /* Since NO_REMAP, problem with statics doesn't exist */
        !            74: 
        !            75: #define TEXT_START 0x10000000
        !            76: #define TEXT_END 0
        !            77: #define DATA_START 0x20000000
        !            78: #define DATA_END 0
        !            79: 
        !            80: /* The data segment in this machine always starts at address 0x20000000.
        !            81:    An address of data cannot be stored correctly in a Lisp object;
        !            82:    we always lose the high bits.  We must tell XPNTR to add them back.  */
        !            83: 
        !            84: #define DATA_SEG_BITS 0x20000000
        !            85: 
        !            86: #define N_BADMAG(x) BADMAG(x)
        !            87: #define N_TXTOFF(x) A_TEXTPOS(x)
        !            88: #define N_SYMOFF(x) A_SYMPOS(x)
        !            89: #define A_TEXT_OFFSET(HDR) sizeof(HDR)
        !            90: #define ADJUST_EXEC_HEADER \
        !            91:     unexec_text_start += sizeof(hdr); \
        !            92:     unexec_data_start = ohdr.a_dbase
        !            93: #undef ADDR_CORRECT
        !            94: #define ADDR_CORRECT(x) ((int)(x))
        !            95: 
        !            96: /* Define C_ALLOCA if this machine does not support a true alloca
        !            97:    and the one written in C should be used instead.
        !            98:    Define HAVE_ALLOCA to say that the system provides a properly
        !            99:    working alloca function and it should be used.
        !           100:    Define neither one if an assembler-language alloca
        !           101:    in the file alloca.s should be used.  */
        !           102: 
        !           103: #define C_ALLOCA
        !           104: #define STACK_DIRECTION -1 /* tell alloca.c which way it grows */
        !           105: 
        !           106: 
        !           107: /* AIX has PTYs, so define here, along with defines needed to make them work. */
        !           108: /* AIX has one problem related to PTYs though: SIGHUP is seen by the parent   */
        !           109: /* along with SIGCHLD when the child dies.  Thus we need to ignore SIGHUP     */
        !           110: /* once a process is begun on a PTY.  EMACS may not go away when its tty      */
        !           111: /* goes away because of this -- if this is a problem, either comment out the  */
        !           112: /* def of HAVE_PTYS below, or set process-connection-type to nil in .emacs.   */
        !           113: 
        !           114: #define HAVE_PTYS
        !           115: #define PTY_ITERATION for (i=0; i<256; i++)
        !           116: #define PTY_NAME_SPRINTF sprintf (pty_name, "/dev/ptc%d", i);
        !           117: #define PTY_TTY_NAME_SPRINTF                                    \
        !           118:         /* Check that server side not already open */           \
        !           119:         if ((ioctl(fd, PTYSTATUS, 0) & 0xFFFF) != 0) {          \
        !           120:             close(fd);                                          \
        !           121:             continue;                                           \
        !           122:         }                                                       \
        !           123:         sprintf (pty_name, "/dev/pts%d", i);
        !           124: 
        !           125: /* TIOCNOTTY isn't needed on AIX, but the rest of the conditionalized code 
        !           126:    in process.c does properly begin a new process group if we fake this out.
        !           127:    On AIX 2.2 TIOCNOTTY is defined in termio.h, and this will be overriden 
        !           128:    by that definition appropriately.  */
        !           129: 
        !           130: #define TIOCNOTTY IOCTYPE
        !           131: 
        !           132: /* AIX has IPC. It also has sockets, and either can be used for client/server.
        !           133:    I would suggest the client/server code be changed to use HAVE_SOCKETS rather
        !           134:    than BSD as the conditional if sockets provide any advantages.  */
        !           135: 
        !           136: #define HAVE_SYSVIPC
        !           137: 
        !           138: /* AIX has sockets */
        !           139: 
        !           140: #define HAVE_SOCKETS
        !           141: /* #define SKTPAIR */ /* SKTPAIR works, but what is advantage over pipes? */
        !           142: 
        !           143: /* Specify the font for X to use.  */
        !           144: 
        !           145: #define X_DEFAULT_FONT "Rom14.500"
        !           146: 
        !           147: /* Here override various assumptions in ymakefile */
        !           148: 
        !           149: /* On AIX 2.2.1, use these definitions instead
        !           150: #define C_SWITCH_MACHINE -I/usr/include -Nn2000
        !           151: #define LIBS_MACHINE -lrts
        !           152: #define LIBX10_MACHINE -lrts
        !           153: #define LIBX11_MACHINE -lrts
        !           154: */
        !           155: 
        !           156: #define C_SWITCH_MACHINE -I/usr/include -I/usr/include/bsd -Nn2000
        !           157: /* need to duplicate -lsock -lbsd -lrts so refs in libX can be resolved   */
        !           158: /* order of lib specs in ymakefile should probably be changed.            */
        !           159: #define LIBS_MACHINE -lsock -lbsd -lrts
        !           160: #define LIBX10_MACHINE -lsock -lbsd -lrts
        !           161: #define LIBX11_MACHINE -lsock -lbsd -lrts
        !           162: 
        !           163: #define OBJECTS_MACHINE hftctl.o
        !           164: #define START_FILES /lib/crt0.o
        !           165: #define LD_SWITCH_MACHINE -n -T0x10000000 -K -e start
        !           166: 
        !           167: #if 0 /* I refuse to promulgate a recommendation that would make
        !           168:          users unable to debug - RMS.  */
        !           169: /* delete the following line to foil optimization, enable debugging */
        !           170: #define C_DEBUG_SWITCH -O
        !           171: #endif
        !           172: 
        !           173: 
        !           174: /* Setup to do some things BSD way - these won't work previous to AIX 2.1.2 */
        !           175: 
        !           176: #define bzero(t,s) (memset((t),(0),(s)))
        !           177: #define bcmp(f,t,s)     (memcmp((t),(f),(s)))
        !           178: #define vfork fork
        !           179: #define killpg( pgrp, sig )  (kill( -(pgrp), (sig) ))
        !           180: 
        !           181: #define BSTRING
        !           182: #define HAVE_DUP2
        !           183: #define HAVE_GETTIMEOFDAY
        !           184: #define HAVE_SELECT
        !           185: #define HAVE_TIMEVAL
        !           186: #define HAVE_VFORK
        !           187: 
        !           188: /* But don't use utimes() -- it causes SIGSEGV!  Use utime() instead. */
        !           189: #define USE_UTIME
        !           190: 
        !           191: /* getwd is in same object module as getcwd in AIX 2.2, but doesn't exist */
        !           192: /* at all in 2.1.2.  So, for compatibility, avoid name collision on 2.2 */
        !           193: #define getwd AIX_getwd
        !           194: 
        !           195: /* AIX defines FIONREAD, but it does not work.  */
        !           196: #define BROKEN_FIONREAD

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