[Emacs-diffs] Changes to src/s/dgux4.h

[Dan Nicolaescu]

CVSROOT:        /cvsroot/emacs
Module name:    emacs
Changes by:     Dan Nicolaescu <dann>   08/01/06 00:56:56

Index: src/s/dgux4.h
===================================================================
RCS file: src/s/dgux4.h
diff -N src/s/dgux4.h
--- src/s/dgux4.h       26 Jul 2007 05:28:08 -0000      1.10
+++ /dev/null   1 Jan 1970 00:00:00 -0000
@@ -1,144 +0,0 @@
-/* Definitions file for GNU Emacs running on Data General's DG/UX
-   Release 4.10 and above.
-   Copyright (C) 1996, 2001, 2002, 2003, 2004, 2005,
-                 2006, 2007  Free Software Foundation, Inc.
-
-This file is part of GNU Emacs.
-
-GNU Emacs is free software; you can redistribute it and/or modify
-it under the terms of the GNU General Public License as published by
-the Free Software Foundation; either version 3, or (at your option)
-any later version.
-
-GNU Emacs is distributed in the hope that it will be useful,
-but WITHOUT ANY WARRANTY; without even the implied warranty of
-MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-GNU General Public License for more details.
-
-You should have received a copy of the GNU General Public License
-along with GNU Emacs; see the file COPYING.  If not, write to
-the Free Software Foundation, 51 Franklin Street, Fifth Floor,
-Boston, MA 02110-1301, USA.  */
-
-/* This file was written by Roderick Schertler <address@hidden>,
-   contact me if you have problems with or comments about running Emacs
-   on dgux.
-
-   A number of things in the older dgux*.h files don't make sense to me,
-   but since I'm relying on memory and I don't have any older dgux
-   systems installed on which to test changes I'm undoing or fixing them
-   here rather than fixing them at the source. */
-
-/* In dgux.h it says "Can't use sys_signal because then etc/server.c
-   would need sysdep.o." and then it #defines signal() to be
-   berk_signal(), but emacsserver.c does `#undef signal' anyway, so that
-   doesn't make sense.
-
-   Further, sys_signal() in sysdep.c already had a special case for
-   #ifdef DGUX, it called berk_signal() explicitly.  I've removed that
-   special case because it also didn't make sense:  All versions of dgux
-   which the dgux*.h headers take into account have POSIX signals
-   (POSIX_SIGNALS is #defined in dgux.h).  The comments in sys_signal()
-   even acknowledged this (saying that the special berk_signal() case
-   wasn't really necessary), they said that sys_signal() was using
-   berk_signal() instead of sigaction() for efficiency.  Since both give
-   reliable signals neither has to be invoked within the handler.  If
-   the efficiency that the comments were talking about is the overhead
-   of setting up the sigaction struct rather than just passing the
-   function pointer in (which is the only efficiency I can think of)
-   then that's a needless optimization, the Emacs sources do better
-   without the special case.
-
-   The following definition will prevent dgux.h from re-defining
-   signal().  I can't just say `#undef signal' after including dgux.h
-   because signal() is already a macro, defined in <sys/signal.h>, and
-   the original definition would be lost. */
-#define NO_DGUX_SIGNAL_REDEF
-
-#include "dgux5-4-3.h"
-
-#define LIBS_DEBUG /* nothing, -lg doesn't exist */
-#define LIBS_SYSTEM -lsocket -lnsl
-
-#ifndef NOT_C_CODE
-
-/* dgux.h defines _setjmp() to be sigsetjmp(), but it defines _longjmp
-   to be longjmp() rather than siglongjmp().  Further, it doesn't define
-   jmp_buf, so sigsetjmp() is being called with a jmp_buf rather than a
-   sigjmp_buf, and the buffer is then passed to vanilla longjmp().  This
-   provides a more complete emulation of the Berkeley semantics. */
-
-#include <setjmp.h>
-#undef jmp_buf
-#undef _setjmp
-#undef  setjmp
-#undef _longjmp
-#undef  longjmp
-#define jmp_buf                sigjmp_buf
-#define _setjmp(env)   sigsetjmp(env, 0)
-#define  setjmp(env)   sigsetjmp(env, 1)
-#define _longjmp       siglongjmp
-#define  longjmp       siglongjmp
-
-/* The BAUD_CONVERT definition in dgux.h is wrong with this version
-   of dgux, but I'm not sure when it changed.
-
-   With the current system Emacs' standard handling of ospeed and
-   baud_rate don't work.  The baud values (B9600 and so on) returned by
-   cfgetospeed() aren't compatible with those used by ospeed.  speed_t,
-   the type returned by cfgetospeed(), is unsigned long and speed_t
-   values are large.  Further, it isn't possible to get at both the
-   SysV3 (ospeed) and POSIX (cfgetospeed()) values through symbolic
-   constants simultaneously because they both use the same names
-   (B9600).  To get both baud_rate and ospeed right at the same time
-   it's necessary to hardcode the values for one set of values, here I'm
-   hardcoding ospeed. */
-#undef BAUD_CONVERT
-#define INIT_BAUD_RATE()                                       \
-    struct termios sg;                                         \
-                                                               \
-    tcgetattr (input_fd, &sg);                                 \
-    switch (cfgetospeed (&sg)) {                               \
-    case    B50:       baud_rate =    50; ospeed = 0x1; break; \
-    case    B75:       baud_rate =    75; ospeed = 0x2; break; \
-    case   B110:       baud_rate =   110; ospeed = 0x3; break; \
-    case   B134:       baud_rate =   134; ospeed = 0x4; break; \
-    case   B150:       baud_rate =   150; ospeed = 0x5; break; \
-    case   B200:       baud_rate =   200; ospeed = 0x6; break; \
-    case   B300:       baud_rate =   300; ospeed = 0x7; break; \
-    case   B600:       baud_rate =   600; ospeed = 0x8; break; \
-    default:                                                   \
-    case  B1200:       baud_rate =  1200; ospeed = 0x9; break; \
-    case  B1800:       baud_rate =  1800; ospeed = 0xa; break; \
-    case  B2400:       baud_rate =  2400; ospeed = 0xb; break; \
-    case  B4800:       baud_rate =  4800; ospeed = 0xc; break; \
-    case  B9600:       baud_rate =  9600; ospeed = 0xd; break; \
-    case B19200:       baud_rate = 19200; ospeed = 0xe; break; \
-    case B38400:       baud_rate = 38400; ospeed = 0xf; break; \
-    }                                                          \
-    return;
-
-
-#if 0 /* Ehud Karni <address@hidden> says that the problem
-        still exists on m88k-dg-dguxR4.11MU04 and i586-dg-dguxR4.11MU04.  */
-/* The `stop on tty output' problem which occurs when using
-   INTERRUPT_INPUT and when Emacs is invoked under X11 using a job
-   control shell (csh, ksh, etc.) in the background doesn't look to be
-   present in R4.11.  (At least, I can't reproduce it using jsh, csh,
-   ksh or zsh.) */
-#undef BROKEN_FIONREAD
-#define INTERRUPT_INPUT
-#endif /* 0 - never */
-
-/* In R4.11 (or maybe R4.10, I don't have a system with that version
-   loaded) some of the internal stdio semantics were changed.  One I
-   found while working on MH is that _cnt has to be 0 before _filbuf()
-   is called.  Another is that (_ptr - _base) doesn't indicate how many
-   characters are waiting to be sent.  I can't spot a good way to get
-   that info from the FILE internals. */
-#define PENDING_OUTPUT_COUNT(FILE) (1)
-
-#endif /* NOT_C_CODE */
-
-/* arch-tag: c7013e7b-6e2e-44f2-ba61-90b6d5e2ea45
-   (do not change this comment) */