Initial revision

11 files changed, 1385 insertions, 0 deletions

diff --git a/src/=x11term.h b/src/=x11term.h
new file mode 100644
index 00000000000..c6f24ba91eb
--- /dev/null
+++ b/src/=x11term.h
@@ -0,0 +1,23 @@
+#include <X11/Xlib.h>
+#include <X11/Xatom.h>
+#include <X11/keysym.h>
+#include <X11/cursorfont.h>
+#include <X11/Xutil.h>
+#include <X11/X10.h>
+
+#define XMOUSEBUFSIZE 64
+
+#ifndef sigmask
+#define sigmask(no) (1L << ((no) - 1))
+#endif
+
+#define BLOCK_INPUT_DECLARE() int BLOCK_INPUT_mask
+#ifdef SIGIO
+#define BLOCK_INPUT() BLOCK_INPUT_mask = sigblock (sigmask (SIGIO))
+#define UNBLOCK_INPUT() sigsetmask (BLOCK_INPUT_mask)
+#else /* not SIGIO */
+#define BLOCK_INPUT()
+#define UNBLOCK_INPUT()
+#endif /* SIGIO */
+
+#define CLASS  "emacs"	/* class id for GNU Emacs, used in .Xdefaults, etc. */
diff --git a/src/cm.h b/src/cm.h
new file mode 100644
index 00000000000..eef86b93be4
--- /dev/null
+++ b/src/cm.h
@@ -0,0 +1,169 @@
+/* Cursor motion calculation definitions for GNU Emacs
+   Copyright (C) 1985, 1989 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 1, 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, 675 Mass Ave, Cambridge, MA 02139, USA.  */
+
+/* Holds the minimum and maximum costs for the parametrized capabilities.  */
+struct parmcap
+  {
+    int mincost, maxcost;
+  };
+
+/* This structure holds everything needed to do cursor motion except the pad
+   character (PC) and the output speed of the terminal (ospeed), which
+   termcap wants in global variables.  */
+
+struct cm
+  {
+    /* Cursor position.  -1 in *both* variables means the cursor
+       position is unknown, in order to force absolute cursor motion. */
+
+    int cm_curY;			/* Current row */
+    int cm_curX;			/* Current column */
+
+    /* Capabilities from termcap */
+    char *cm_up;		/* up (up) */
+    char *cm_down;		/* down (do) */
+    char *cm_left;		/* left (le) */
+    char *cm_right;		/* right (nd) */
+    char *cm_home;		/* home (ho) */
+    char *cm_cr;		/* carriage return (cr) */
+    char *cm_ll;		/* last line (ll) */
+    char *cm_tab;		/* tab (ta) */
+    char *cm_backtab;		/* backtab (bt) */
+    char *cm_abs;		/* absolute (cm) */
+    char *cm_habs;		/* horizontal absolute (ch) */
+    char *cm_vabs;		/* vertical absolute (cv) */
+#if 0
+    char *cm_ds;		/* "don't send" string (ds) */
+#endif
+    char *cm_multiup;		/* multiple up (UP) */
+    char *cm_multidown;		/* multiple down (DO) */
+    char *cm_multileft;		/* multiple left (LE) */
+    char *cm_multiright;	/* multiple right (RI) */
+    int cm_cols;		/* number of cols on screen (co) */
+    int cm_rows;		/* number of rows on screen (li) */
+    int cm_tabwidth;		/* tab width (it) */
+    unsigned int cm_autowrap:1;	/* autowrap flag (am) */
+    unsigned int cm_magicwrap:1; /* VT-100: cursor stays in last col but
+				    will cm_wrap if next char is
+				    printing (xn) */
+    unsigned int cm_usetabs:1;	/* if set, use tabs */
+    unsigned int cm_losewrap:1;	/* if reach right margin, forget cursor
+				   location */
+    unsigned int cm_autolf:1;	/* \r performs a \r\n (rn) */
+
+    /* Parametrized capabilities.  This needs to be a struct since
+       the costs are accessed through pointers.  */
+
+#if 0
+    struct parmcap cc_abs;	/* absolute (cm) */
+    struct parmcap cc_habs;	/* horizontal absolute (ch) */
+    struct parmcap cc_vabs;	/* vertical absolute (cv) */
+    struct parmcap cc_multiup;	/* multiple up (UP) */
+    struct parmcap cc_multidown; /* multiple down (DO) */
+    struct parmcap cc_multileft; /* multiple left (LE) */
+    struct parmcap cc_multiright; /* multiple right (RI) */
+#endif
+
+    /* Costs for the non-parametrized capabilities */
+    int cc_up;			/* cost for up */
+    int cc_down;		/* etc. */
+    int cc_left;
+    int cc_right;
+    int cc_home;
+    int cc_cr;
+    int cc_ll;
+    int cc_tab;
+    int cc_backtab;
+    /* These are temporary, until the code is installed to use the
+       struct parmcap fields above.  */
+    int cc_abs;
+    int cc_habs;
+    int cc_vabs;
+  };
+
+extern struct cm Wcm;		/* Terminal capabilities */
+extern char PC;			/* Pad character */
+extern short ospeed;		/* Output speed (from sg_ospeed) */
+
+/* Shorthand */
+#ifndef NoCMShortHand
+#define curY		Wcm.cm_curY
+#define curX		Wcm.cm_curX
+#define Up		Wcm.cm_up
+#define Down		Wcm.cm_down
+#define Left		Wcm.cm_left
+#define Right		Wcm.cm_right
+#define Tab		Wcm.cm_tab
+#define BackTab		Wcm.cm_backtab
+#define TabWidth	Wcm.cm_tabwidth
+#define CR		Wcm.cm_cr
+#define Home		Wcm.cm_home
+#define LastLine	Wcm.cm_ll
+#define AbsPosition	Wcm.cm_abs
+#define ColPosition	Wcm.cm_habs
+#define RowPosition	Wcm.cm_vabs
+#define MultiUp		Wcm.cm_multiup
+#define MultiDown	Wcm.cm_multidown
+#define MultiLeft	Wcm.cm_multileft
+#define MultiRight	Wcm.cm_multiright
+#define AutoWrap	Wcm.cm_autowrap
+#define MagicWrap	Wcm.cm_magicwrap
+#define UseTabs		Wcm.cm_usetabs
+#define ScreenRows	Wcm.cm_rows
+#define ScreenCols	Wcm.cm_cols
+
+#define UpCost		Wcm.cc_up
+#define DownCost	Wcm.cc_down
+#define LeftCost	Wcm.cc_left
+#define RightCost	Wcm.cc_right
+#define HomeCost	Wcm.cc_home
+#define CRCost		Wcm.cc_cr
+#define LastLineCost	Wcm.cc_ll
+#define TabCost		Wcm.cc_tab
+#define BackTabCost	Wcm.cc_backtab
+#define AbsPositionCost	Wcm.cc_abs
+#define ColPositionCost	Wcm.cc_habs
+#define RowPositionCost	Wcm.cc_vabs
+#define MultiUpCost	Wcm.cc_multiup
+#define MultiDownCost	Wcm.cc_multidown
+#define MultiLeftCost	Wcm.cc_multileft
+#define MultiRightCost	Wcm.cc_multiright
+#endif
+
+#define cmat(row,col)	(curY = (row), curX = (col))
+#define cmplus(n)					\
+  {							\
+    if ((curX += (n)) >= ScreenCols && !MagicWrap)	\
+      {							\
+	if (Wcm.cm_losewrap) losecursor ();		\
+	else if (AutoWrap) curX = 0, curY++;		\
+	else curX--;					\
+      }							\
+  }
+
+#define losecursor()	(curX = -1, curY = -1)
+
+extern int cost;
+extern int evalcost ();
+
+extern void cmputc ();
+extern int cmcostinit ();
+extern int cmgoto ();
+extern int Wcm_clear ();
+extern int Wcm_init ();
diff --git a/src/gnu.h b/src/gnu.h
new file mode 100644
index 00000000000..3985c406d2a
--- /dev/null
+++ b/src/gnu.h
@@ -0,0 +1,114 @@
+#ifdef HAVE_X11
+#define gnu_width 50
+#define gnu_height 50
+static char gnu_bits[] = {
+   0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff,
+   0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xef, 0xff, 0xff, 0xff, 0xff, 0xff,
+   0xff, 0x9f, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0x1f, 0xfe, 0xff, 0xff,
+   0xff, 0xff, 0xff, 0x7f, 0xfc, 0xff, 0xff, 0xf7, 0xff, 0xff, 0xff, 0xf1,
+   0xff, 0xff, 0xf3, 0xff, 0x8f, 0xff, 0xe1, 0xff, 0xff, 0xf9, 0x3f, 0x22,
+   0xfe, 0xcb, 0xff, 0xff, 0xf8, 0xc3, 0xf8, 0xfc, 0xcb, 0xff, 0x7f, 0xfc,
+   0xe0, 0xf9, 0xf9, 0xdb, 0xff, 0x7f, 0xfc, 0xf0, 0xfb, 0xf3, 0xd9, 0xff,
+   0x3f, 0x7e, 0xf8, 0xff, 0xf7, 0xcc, 0xff, 0x9f, 0x3e, 0x1c, 0x7f, 0x44,
+   0xce, 0xff, 0xcf, 0x1e, 0xcc, 0x01, 0x00, 0xe7, 0xff, 0xef, 0x0e, 0xce,
+   0x38, 0x1c, 0xe0, 0xff, 0xef, 0x0e, 0x27, 0xfe, 0xfa, 0xc3, 0xff, 0xef,
+   0x7c, 0x93, 0xff, 0xe5, 0xbf, 0xff, 0xef, 0x99, 0xc9, 0xab, 0x2a, 0x00,
+   0xff, 0xcf, 0xc3, 0x24, 0x54, 0xc5, 0xd5, 0xff, 0x9f, 0x7f, 0x16, 0xab,
+   0xca, 0xff, 0xff, 0x1f, 0x1f, 0x93, 0x46, 0x95, 0xff, 0xff, 0x7f, 0xc8,
+   0x49, 0x99, 0x8a, 0xff, 0xff, 0xff, 0xf0, 0x49, 0x4b, 0x95, 0xff, 0xff,
+   0xff, 0xf9, 0x4c, 0x88, 0x8a, 0xff, 0xff, 0xff, 0x1e, 0xe6, 0x58, 0x95,
+   0xff, 0xff, 0x3f, 0x00, 0xe6, 0xb7, 0x0a, 0xff, 0xff, 0xbf, 0x8a, 0xea,
+   0x50, 0x15, 0xff, 0xff, 0xff, 0x8f, 0xca, 0x99, 0x2a, 0xff, 0xff, 0xff,
+   0xa7, 0x95, 0x7f, 0x15, 0xff, 0xff, 0xff, 0x23, 0x55, 0x7f, 0x2a, 0xfe,
+   0xff, 0xff, 0x63, 0xd8, 0xfc, 0x14, 0xfe, 0xff, 0xff, 0x43, 0x9a, 0xfb,
+   0x2b, 0xfe, 0xff, 0xff, 0xc3, 0xaa, 0x12, 0x94, 0xfc, 0xff, 0xff, 0xc1,
+   0x32, 0xd5, 0xc1, 0xfd, 0xff, 0xff, 0x81, 0x46, 0xd5, 0x47, 0xfc, 0xff,
+   0xff, 0x83, 0x6c, 0xc2, 0x6e, 0xfc, 0xff, 0xff, 0x83, 0x89, 0x88, 0x69,
+   0xfe, 0xff, 0xff, 0x07, 0x92, 0x09, 0x3b, 0xfe, 0xff, 0xff, 0x07, 0x22,
+   0x01, 0x3c, 0xfe, 0xff, 0xff, 0x0f, 0x4e, 0x02, 0x03, 0xfe, 0xff, 0xff,
+   0x2f, 0xd0, 0x18, 0x3e, 0xff, 0xff, 0xff, 0x3f, 0xb0, 0x19, 0x9e, 0xff,
+   0xff, 0xff, 0x7f, 0x00, 0x09, 0x80, 0xff, 0xff, 0xff, 0x7f, 0x01, 0xe3,
+   0xc1, 0xff, 0xff, 0xff, 0xff, 0x05, 0xe0, 0xff, 0xff, 0xff, 0xff, 0xff,
+   0x07, 0xf0, 0xff, 0xff, 0xff, 0xff, 0xff, 0x5f, 0xfd, 0xff, 0xff, 0xff,
+   0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff,
+   0xff, 0xff};
+#else /* X10 */
+#define sink_width 48
+#define sink_height 48
+#define sink_mask_width 48
+#define sink_mask_height 48
+short sink_bits[] = {
+   0xffff, 0xffff, 0xffff, 0xffff,
+   0xffff, 0x9f80, 0xffff, 0xffff,
+   0x9f9f, 0xffff, 0xffff, 0x8000,
+   0xffff, 0x7fff, 0xbffe, 0xffff,
+   0x7fff, 0xa003, 0xffff, 0x7fff,
+   0xaffd, 0xffff, 0x3fff, 0xaff9,
+   0xffff, 0xffff, 0xafff, 0xffff,
+   0xffff, 0xaffc, 0xffff, 0x7fff,
+   0xaff8, 0xffff, 0xffff, 0xaffc,
+   0xffff, 0xffff, 0xafff, 0xffff,
+   0xbfff, 0xaff7, 0xffff, 0x3fff,
+   0xaff3, 0xffff, 0xffff, 0xaffc,
+   0x003f, 0x0000, 0x2000, 0x007f,
+   0x0000, 0xe000, 0xf8df, 0xffff,
+   0x07ff, 0xf9cf, 0xff0f, 0xe7ff,
+   0xf9cf, 0xfff7, 0xe7ff, 0xf9ff,
+   0x63f7, 0xe7fb, 0xf9ff, 0x5a37,
+   0xe7fb, 0xf9cf, 0x5af7, 0xe7fb,
+   0xf9cf, 0x5af7, 0xe7f9, 0xf9ef,
+   0xdb0f, 0xe7fa, 0xf9ff, 0xffff,
+   0xe7ff, 0xf9df, 0xffff, 0xe7ff,
+   0x19cf, 0xfffc, 0xe7ff, 0xd9cf,
+   0xffff, 0xe7ff, 0xd9ff, 0xce47,
+   0xe673, 0x19ff, 0xb5b6, 0xe7ad,
+   0xd9cf, 0xb5b7, 0xe67d, 0xd9c7,
+   0xb5b7, 0xe5ed, 0x19ef, 0x4db4,
+   0xe673, 0xf1ff, 0xffff, 0xe3ff,
+   0x03ff, 0x0380, 0xf000, 0x07ef,
+   0x0100, 0xf800, 0xffc7, 0xf93f,
+   0xffff, 0xffe7, 0xfd7f, 0xffe0,
+   0xffff, 0x7d7f, 0xffdf, 0xffff,
+   0xbd7f, 0xffb1, 0xffff, 0xbb7f,
+   0xffae, 0xffef, 0xdaff, 0xffae,
+   0xffc7, 0x66ff, 0xffaf, 0xffe7,
+   0xbdff, 0xffaf, 0xffff, 0xc3ff,
+   0xffaf, 0xffff, 0xffff, 0xffaf};
+short sink_mask_bits[] = {
+   0xffff, 0xffff, 0xffff, 0xffff,
+   0xffff, 0xffff, 0xffff, 0xffff,
+   0xffff, 0xffff, 0xffff, 0xffff,
+   0xffff, 0xffff, 0xffff, 0xffff,
+   0xffff, 0xffff, 0xffff, 0xffff,
+   0xffff, 0xffff, 0xffff, 0xffff,
+   0xffff, 0xffff, 0xffff, 0xffff,
+   0xffff, 0xffff, 0xffff, 0xffff,
+   0xffff, 0xffff, 0xffff, 0xffff,
+   0xffff, 0xffff, 0xffff, 0xffff,
+   0xffff, 0xffff, 0xffff, 0xffff,
+   0xffff, 0xffff, 0xffff, 0xffff,
+   0xffff, 0xffff, 0xffff, 0xffff,
+   0xffff, 0xffff, 0xffff, 0xffff,
+   0xffff, 0xffff, 0xffff, 0xffff,
+   0xffff, 0xffff, 0xffff, 0xffff,
+   0xffff, 0xffff, 0xffff, 0xffff,
+   0xffff, 0xffff, 0xffff, 0xffff,
+   0xffff, 0xffff, 0xffff, 0xffff,
+   0xffff, 0xffff, 0xffff, 0xffff,
+   0xffff, 0xffff, 0xffff, 0xffff,
+   0xffff, 0xffff, 0xffff, 0xffff,
+   0xffff, 0xffff, 0xffff, 0xffff,
+   0xffff, 0xffff, 0xffff, 0xffff,
+   0xffff, 0xffff, 0xffff, 0xffff,
+   0xffff, 0xffff, 0xffff, 0xffff,
+   0xffff, 0xffff, 0xffff, 0xffff,
+   0xffff, 0xffff, 0xffff, 0xffff,
+   0xffff, 0xffff, 0xffff, 0xffff,
+   0xffff, 0xffff, 0xffff, 0xffff,
+   0xffff, 0xffff, 0xffff, 0xffff,
+   0xffff, 0xffff, 0xffff, 0xffff,
+   0xffff, 0xffff, 0xffff, 0xffff,
+   0xffff, 0xffff, 0xffff, 0xffff,
+   0xffff, 0xffff, 0xffff, 0xffff,
+   0xffff, 0xffff, 0xffff, 0xffff};
+#endif /* X10 */
diff --git a/src/mem-limits.h b/src/mem-limits.h
new file mode 100644
index 00000000000..39200f99501
--- /dev/null
+++ b/src/mem-limits.h
@@ -0,0 +1,102 @@
+/* Includes for memory limit warnings.
+   Copyright (C) 1990 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 1, 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, 675 Mass Ave, Cambridge, MA 02139, USA.  */
+
+#ifndef BSD4_2
+#ifndef USG
+#include <sys/vlimit.h>
+#endif /* not USG */
+#else /* if BSD4_2 */
+#include <sys/time.h>
+#include <sys/resource.h>
+#endif /* BSD4_2 */
+
+#ifdef __STDC__
+typedef void *POINTER;
+#else
+typedef char *POINTER;
+#endif
+
+typedef unsigned long SIZE;
+
+#ifdef NULL
+#undef NULL
+#endif
+#define NULL ((POINTER) 0)
+
+#ifdef emacs
+extern POINTER start_of_data ();
+
+#ifdef BSD
+#ifndef DATA_SEG_BITS
+#define start_of_data() &etext
+#endif
+#endif
+
+#else  /* Not emacs */ 
+#define start_of_data() &etext
+#endif /* Not emacs */
+
+  
+
+/* start of data space; can be changed by calling malloc_init */
+static POINTER data_space_start;
+
+/* Number of bytes of writable memory we can expect to be able to get */
+static unsigned int lim_data;
+
+
+
+#ifdef USG
+
+get_lim_data ()
+{
+  extern long ulimit ();
+    
+#ifdef ULIMIT_BREAK_VALUE
+  lim_data = ULIMIT_BREAK_VALUE;
+#else
+  lim_data = ulimit (3, 0);
+#endif
+
+  lim_data -= (long) data_space_start;
+}
+
+#else /* not USG */
+#ifndef BSD4_2
+
+get_lim_data ()
+{
+  lim_data = vlimit (LIM_DATA, -1);
+}
+
+#else /* BSD4_2 */
+
+get_lim_data ()
+{
+  struct rlimit XXrlimit;
+
+  getrlimit (RLIMIT_DATA, &XXrlimit);
+#ifdef RLIM_INFINITY
+  lim_data = XXrlimit.rlim_cur & RLIM_INFINITY; /* soft limit */
+#else
+  lim_data = XXrlimit.rlim_cur;	/* soft limit */
+#endif
+}
+#endif /* BSD4_2 */
+#endif /* not USG */
diff --git a/src/sinkmask.h b/src/sinkmask.h
new file mode 100644
index 00000000000..1ad645df82f
--- /dev/null
+++ b/src/sinkmask.h
@@ -0,0 +1,91 @@
+#define sink_mask_width 48
+#define sink_mask_height 48
+#ifdef HAVE_X11
+static char sink_mask_bits[] = {
+   0xff, 0xff, 0xff, 0xff, 0xff, 0xff,
+   0xff, 0xff, 0xff, 0xff, 0xff, 0xff,
+   0xff, 0xff, 0xff, 0xff, 0xff, 0xff,
+   0xff, 0xff, 0xff, 0xff, 0xff, 0xff,
+   0xff, 0xff, 0xff, 0xff, 0xff, 0xff,
+   0xff, 0xff, 0xff, 0xff, 0xff, 0xff,
+   0xff, 0xff, 0xff, 0xff, 0xff, 0xff,
+   0xff, 0xff, 0xff, 0xff, 0xff, 0xff,
+   0xff, 0xff, 0xff, 0xff, 0xff, 0xff,
+   0xff, 0xff, 0xff, 0xff, 0xff, 0xff,
+   0xff, 0xff, 0xff, 0xff, 0xff, 0xff,
+   0xff, 0xff, 0xff, 0xff, 0xff, 0xff,
+   0xff, 0xff, 0xff, 0xff, 0xff, 0xff,
+   0xff, 0xff, 0xff, 0xff, 0xff, 0xff,
+   0xff, 0xff, 0xff, 0xff, 0xff, 0xff,
+   0xff, 0xff, 0xff, 0xff, 0xff, 0xff,
+   0xff, 0xff, 0xff, 0xff, 0xff, 0xff,
+   0xff, 0xff, 0xff, 0xff, 0xff, 0xff,
+   0xff, 0xff, 0xff, 0xff, 0xff, 0xff,
+   0xff, 0xff, 0xff, 0xff, 0xff, 0xff,
+   0xff, 0xff, 0xff, 0xff, 0xff, 0xff,
+   0xff, 0xff, 0xff, 0xff, 0xff, 0xff,
+   0xff, 0xff, 0xff, 0xff, 0xff, 0xff,
+   0xff, 0xff, 0xff, 0xff, 0xff, 0xff,
+   0xff, 0xff, 0xff, 0xff, 0xff, 0xff,
+   0xff, 0xff, 0xff, 0xff, 0xff, 0xff,
+   0xff, 0xff, 0xff, 0xff, 0xff, 0xff,
+   0xff, 0xff, 0xff, 0xff, 0xff, 0xff,
+   0xff, 0xff, 0xff, 0xff, 0xff, 0xff,
+   0xff, 0xff, 0xff, 0xff, 0xff, 0xff,
+   0xff, 0xff, 0xff, 0xff, 0xff, 0xff,
+   0xff, 0xff, 0xff, 0xff, 0xff, 0xff,
+   0xff, 0xff, 0xff, 0xff, 0xff, 0xff,
+   0xff, 0xff, 0xff, 0xff, 0xff, 0xff,
+   0xff, 0xff, 0xff, 0xff, 0xff, 0xff,
+   0xff, 0xff, 0xff, 0xff, 0xff, 0xff,
+   0xff, 0xff, 0xff, 0xff, 0xff, 0xff,
+   0xff, 0xff, 0xff, 0xff, 0xff, 0xff,
+   0xff, 0xff, 0xff, 0xff, 0xff, 0xff,
+   0xff, 0xff, 0xff, 0xff, 0xff, 0xff,
+   0xff, 0xff, 0xff, 0xff, 0xff, 0xff,
+   0xff, 0xff, 0xff, 0xff, 0xff, 0xff,
+   0xff, 0xff, 0xff, 0xff, 0xff, 0xff,
+   0xff, 0xff, 0xff, 0xff, 0xff, 0xff,
+   0xff, 0xff, 0xff, 0xff, 0xff, 0xff,
+   0xff, 0xff, 0xff, 0xff, 0xff, 0xff,
+   0xff, 0xff, 0xff, 0xff, 0xff, 0xff,
+   0xff, 0xff, 0xff, 0xff, 0xff, 0xff}; 
+#else
+short sink_mask_bits[] = {
+   0xffff, 0xffff, 0xffff, 0xffff,
+   0xffff, 0xffff, 0xffff, 0xffff,
+   0xffff, 0xffff, 0xffff, 0xffff,
+   0xffff, 0xffff, 0xffff, 0xffff,
+   0xffff, 0xffff, 0xffff, 0xffff,
+   0xffff, 0xffff, 0xffff, 0xffff,
+   0xffff, 0xffff, 0xffff, 0xffff,
+   0xffff, 0xffff, 0xffff, 0xffff,
+   0xffff, 0xffff, 0xffff, 0xffff,
+   0xffff, 0xffff, 0xffff, 0xffff,
+   0xffff, 0xffff, 0xffff, 0xffff,
+   0xffff, 0xffff, 0xffff, 0xffff,
+   0xffff, 0xffff, 0xffff, 0xffff,
+   0xffff, 0xffff, 0xffff, 0xffff,
+   0xffff, 0xffff, 0xffff, 0xffff,
+   0xffff, 0xffff, 0xffff, 0xffff,
+   0xffff, 0xffff, 0xffff, 0xffff,
+   0xffff, 0xffff, 0xffff, 0xffff,
+   0xffff, 0xffff, 0xffff, 0xffff,
+   0xffff, 0xffff, 0xffff, 0xffff,
+   0xffff, 0xffff, 0xffff, 0xffff,
+   0xffff, 0xffff, 0xffff, 0xffff,
+   0xffff, 0xffff, 0xffff, 0xffff,
+   0xffff, 0xffff, 0xffff, 0xffff,
+   0xffff, 0xffff, 0xffff, 0xffff,
+   0xffff, 0xffff, 0xffff, 0xffff,
+   0xffff, 0xffff, 0xffff, 0xffff,
+   0xffff, 0xffff, 0xffff, 0xffff,
+   0xffff, 0xffff, 0xffff, 0xffff,
+   0xffff, 0xffff, 0xffff, 0xffff,
+   0xffff, 0xffff, 0xffff, 0xffff,
+   0xffff, 0xffff, 0xffff, 0xffff,
+   0xffff, 0xffff, 0xffff, 0xffff,
+   0xffff, 0xffff, 0xffff, 0xffff,
+   0xffff, 0xffff, 0xffff, 0xffff,
+   0xffff, 0xffff, 0xffff, 0xffff};
+#endif /* HAVE_X11 */
diff --git a/src/syntax.h b/src/syntax.h
new file mode 100644
index 00000000000..6bd9757c3a8
--- /dev/null
+++ b/src/syntax.h
@@ -0,0 +1,92 @@
+/* Declarations having to do with GNU Emacs syntax tables.
+   Copyright (C) 1985 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 1, 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, 675 Mass Ave, Cambridge, MA 02139, USA.  */
+
+
+extern Lisp_Object Qsyntax_table_p;
+extern Lisp_Object Fsyntax_table_p (), Fsyntax_table (), Fset_syntax_table ();
+
+/* The standard syntax table is stored where it will automatically
+   be used in all new buffers.  */
+#define Vstandard_syntax_table buffer_defaults.syntax_table
+
+/* A syntax table is a Lisp vector of length 0400, whose elements are integers.
+
+The low 8 bits of the integer is a code, as follows:
+*/
+
+enum syntaxcode
+  {
+    Swhitespace, /* for a whitespace character */
+    Spunct,	 /* for random punctuation characters */
+    Sword,	 /* for a word constituent */
+    Ssymbol,	 /* symbol constituent but not word constituent */
+    Sopen,	 /* for a beginning delimiter */
+    Sclose,      /* for an ending delimiter */
+    Squote,	 /* for a prefix character like Lisp ' */
+    Sstring,	 /* for a string-grouping character like Lisp " */
+    Smath,	 /* for delimiters like $ in Tex. */
+    Sescape,	 /* for a character that begins a C-style escape */
+    Scharquote,  /* for a character that quotes the following character */
+    Scomment,    /* for a comment-starting character */
+    Sendcomment, /* for a comment-ending character */
+    Smax	 /* Upper bound on codes that are meaningful */
+  };
+
+#define SYNTAX(c) \
+  ((enum syntaxcode) (XINT (XVECTOR (current_buffer->syntax_table)->contents[c]) & 0377))
+
+/* The next 8 bits of the number is a character,
+ the matching delimiter in the case of Sopen or Sclose. */
+
+#define SYNTAX_MATCH(c) \
+  ((XINT (XVECTOR (current_buffer->syntax_table)->contents[c]) >> 8) & 0377)
+
+/* Then there are five single-bit flags that have the following meanings:
+  1. This character is the first of a two-character comment-start sequence.
+  2. This character is the second of a two-character comment-start sequence.
+  3. This character is the first of a two-character comment-end sequence.
+  4. This character is the second of a two-character comment-end sequence.
+  5. This character is a prefix, for backward-prefix-chars.
+ Note that any two-character sequence whose first character has flag 1
+  and whose second character has flag 2 will be interpreted as a comment start. */
+
+#define SYNTAX_COMSTART_FIRST(c) \
+  ((XINT (XVECTOR (current_buffer->syntax_table)->contents[c]) >> 16) & 1)
+
+#define SYNTAX_COMSTART_SECOND(c) \
+  ((XINT (XVECTOR (current_buffer->syntax_table)->contents[c]) >> 17) & 1)
+
+#define SYNTAX_COMEND_FIRST(c) \
+  ((XINT (XVECTOR (current_buffer->syntax_table)->contents[c]) >> 18) & 1)
+
+#define SYNTAX_COMEND_SECOND(c) \
+  ((XINT (XVECTOR (current_buffer->syntax_table)->contents[c]) >> 19) & 1)
+
+#define SYNTAX_PREFIX(c) \
+  ((XINT (XVECTOR (current_buffer->syntax_table)->contents[c]) >> 20) & 1)
+
+/* This array, indexed by a character, contains the syntax code which that
+ character signifies (as a char).  For example,
+ (enum syntaxcode) syntax_spec_code['w'] is Sword. */
+
+extern unsigned char syntax_spec_code[0400];
+
+/* Indexed by syntax code, give the letter that describes it. */
+
+extern char syntax_code_spec[13];
diff --git a/src/termchar.h b/src/termchar.h
new file mode 100644
index 00000000000..d82ccb0bad9
--- /dev/null
+++ b/src/termchar.h
@@ -0,0 +1,45 @@
+/* Flags and parameters describing terminal's characteristics.
+   Copyright (C) 1985, 1986 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 1, 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, 675 Mass Ave, Cambridge, MA 02139, USA.  */
+
+
+extern int baud_rate;		/* Output speed in baud */
+extern int screen_width;	/* Number of usable columns */
+extern int screen_height;	/* Number of lines */
+extern int must_write_spaces;	/* Nonzero means spaces in the text
+				   must actually be output; can't just skip
+				   over some columns to leave them blank.  */
+extern int min_padding_speed;	/* Speed below which no padding necessary */
+extern int fast_clear_end_of_line; /* Nonzero means terminal has
+				      command for this */
+
+extern int line_ins_del_ok;	/* Terminal can insert and delete lines */
+extern int char_ins_del_ok;	/* Terminal can insert and delete chars */
+extern int scroll_region_ok;	/* Terminal supports setting the scroll
+				   window */
+extern int memory_below_screen;	/* Terminal remembers lines scrolled
+				   off bottom */
+extern int fast_clear_end_of_line; /* Terminal has a `ce' string */
+
+extern int dont_calculate_costs; /* Nonzero means don't bother computing
+				    various cost tables; we won't use them. */
+
+/* Nonzero means no need to redraw the entire screen on resuming
+   a suspended Emacs.  This is useful on terminals with multiple pages,
+   where one page is used for Emacs and another for all else. */
+extern int no_redraw_on_reenter;
diff --git a/src/termopts.h b/src/termopts.h
new file mode 100644
index 00000000000..0b4c6234c4c
--- /dev/null
+++ b/src/termopts.h
@@ -0,0 +1,40 @@
+/* Flags and paramaters describing user options for handling the terminal.
+   Copyright (C) 1985, 1986, 1990 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 1, 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, 675 Mass Ave, Cambridge, MA 02139, USA.  */
+
+
+/* Nonzero means flash the screen instead of ringing the bell.  */
+extern int visible_bell;
+
+/* Nonzero means invert white and black for the entire screen.  */
+extern int inverse_video;
+
+/* Nonzero means use ^S/^Q as cretinous flow control.  */
+extern int flow_control;
+
+/* Nonzero means use interrupt-driven input.  */
+extern int interrupt_input;
+
+/* Nonzero while interrupts are temporarily deferred during redisplay.  */
+extern int interrupts_deferred;
+
+/* Terminal has meta key */
+extern int meta_key;
+
+/* Nonzero means truncate lines in all windows less wide than the screen */
+extern int truncate_partial_width_windows;
diff --git a/src/unexencap.c b/src/unexencap.c
new file mode 100644
index 00000000000..4ffc41145a9
--- /dev/null
+++ b/src/unexencap.c
@@ -0,0 +1,116 @@
+/* Waiting for papers!  */
+
+/*
+ * Do an unexec() for coff encapsulation. Uses the approach I took
+ * for AKCL, so don't be surprised if it doesn't look too much like
+ * the other unexec() routines. Assumes NO_REMAP. Should be easy to
+ * adapt to the emacs style unexec() if that is desired, but this works
+ * just fine for me with GCC/GAS/GLD under System V.  - Jordan
+ */
+
+#include <sys/types.h>
+#include <sys/fcntl.h>
+#include <sys/file.h>
+#include <stdio.h>
+#include "/usr/gnu/lib/gcc/gcc-include/a.out.h"
+
+filecpy(to, from, n)
+FILE *to, *from;
+register int n;
+{
+	char buffer[BUFSIZ];
+
+	for (;;)
+		if (n > BUFSIZ) {
+			fread(buffer, BUFSIZ, 1, from);
+			fwrite(buffer, BUFSIZ, 1, to);
+			n -= BUFSIZ;
+		} else if (n > 0) {
+			fread(buffer, 1, n, from);
+			fwrite(buffer, 1, n, to);
+			break;
+		} else
+			break;
+}
+/* ****************************************************************
+ * unexec
+ *
+ * driving logic.
+ * ****************************************************************/
+unexec (new_name, a_name, data_start, bss_start, entry_address)
+char *new_name, *a_name;
+unsigned data_start, bss_start, entry_address;
+{	
+	struct coffheader header1;
+	struct coffscn *tp, *dp, *bp;
+	struct exec header;
+	int stsize;
+	char *original_file = a_name;
+	char *save_file = new_name;
+
+	char *data_begin, *data_end;
+	int original_data;
+	FILE *original, *save;
+	register int n;
+	register char *p;
+	extern char *sbrk();
+	char stdin_buf[BUFSIZ], stdout_buf[BUFSIZ];
+
+
+	fclose(stdin);
+	original = fopen(original_file, "r");
+	if (stdin != original || original->_file != 0) {
+		fprintf(stderr, "unexec: Can't open the original file.\n");
+		exit(1);
+	}
+	setbuf(original, stdin_buf);
+	fclose(stdout);
+	unlink(save_file);
+	n = open(save_file, O_CREAT|O_WRONLY, 0777);
+	if (n != 1 || (save = fdopen(n, "w")) != stdout) {
+		fprintf(stderr, "unexec: Can't open the save file.\n");
+		exit(1);
+	}
+	setbuf(save, stdout_buf);
+
+	fread(&header1, sizeof(header1), 1, original);
+        tp = &header1.scns[0];
+        dp = &header1.scns[1];
+        bp = &header1.scns[2];
+        fread(&header, sizeof(header), 1, original);
+        data_begin=(char *)N_DATADDR(header);
+        data_end = sbrk(0);
+        original_data = header.a_data;
+        header.a_data = data_end - data_begin;
+        header.a_bss = 0;
+        dp->s_size = header.a_data;
+        bp->s_paddr = dp->s_vaddr + dp->s_size;
+        bp->s_vaddr = bp->s_paddr; 
+        bp->s_size = 0; 
+        header1.tsize = tp->s_size;
+        header1.dsize = dp->s_size;
+        header1.bsize = bp->s_size;
+        fwrite(&header1, sizeof(header1), 1, save);
+        fwrite(&header, sizeof(header), 1, save);
+
+        filecpy(save, original, header.a_text);
+
+	for (n = header.a_data, p = data_begin;  ;  n -= BUFSIZ, p += BUFSIZ)
+		if (n > BUFSIZ)
+			fwrite(p, BUFSIZ, 1, save);
+		else if (n > 0) {
+			fwrite(p, 1, n, save);
+			break;
+		} else
+			break;
+
+	fseek(original, original_data, 1);
+
+        filecpy(save, original, header.a_syms+header.a_trsize+header.a_drsize);
+        fread(&stsize, sizeof(stsize), 1, original);
+        fwrite(&stsize, sizeof(stsize), 1, save);
+        filecpy(save, original, stsize - sizeof(stsize));
+
+	fclose(original);
+	fclose(save);
+}
diff --git a/src/unexmips.c b/src/unexmips.c
new file mode 100644
index 00000000000..8cfdd401b40
--- /dev/null
+++ b/src/unexmips.c
@@ -0,0 +1,305 @@
+/* Unexec for MIPS (including IRIS4D).
+   Note that the GNU project considers support for MIPS operation
+   a peripheral activity which should not be allowed to divert effort
+   from development of the GNU system.  Changes in this code will be
+   installed when users send them in, but aside from that
+   we don't plan to think about it, or about whether other Emacs
+   maintenance might break it.
+
+   Copyright (C) 1988 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 1, 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, 675 Mass Ave, Cambridge, MA 02139, USA.  */
+
+
+#include "config.h"
+#include <sys/types.h>
+#include <sys/file.h>
+#include <sys/stat.h>
+#include <stdio.h>
+#include <varargs.h>
+#include <filehdr.h>
+#include <aouthdr.h>
+#include <scnhdr.h>
+#include <sym.h>
+
+#ifdef IRIS_4D
+#include "getpagesize.h"
+#endif
+
+static void fatal_unexec ();
+
+#define READ(_fd, _buffer, _size, _error_message, _error_arg) \
+	errno = EEOF; \
+	if (read (_fd, _buffer, _size) != _size) \
+	  fatal_unexec (_error_message, _error_arg);
+
+#define WRITE(_fd, _buffer, _size, _error_message, _error_arg) \
+	if (write (_fd, _buffer, _size) != _size) \
+	  fatal_unexec (_error_message, _error_arg);
+
+#define SEEK(_fd, _position, _error_message, _error_arg) \
+	errno = EEOF; \
+	if (lseek (_fd, _position, L_SET) != _position) \
+	  fatal_unexec (_error_message, _error_arg);
+
+extern int errno;
+extern int sys_nerr;
+extern char *sys_errlist[];
+#define EEOF -1
+
+static struct scnhdr *text_section;
+static struct scnhdr *init_section;
+static struct scnhdr *finit_section;
+static struct scnhdr *rdata_section;
+static struct scnhdr *data_section;
+static struct scnhdr *lit8_section;
+static struct scnhdr *lit4_section;
+static struct scnhdr *sdata_section;
+static struct scnhdr *sbss_section;
+static struct scnhdr *bss_section;
+
+struct headers {
+    struct filehdr fhdr;
+    struct aouthdr aout;
+    struct scnhdr section[10];
+};
+
+/* Define name of label for entry point for the dumped executable.  */
+
+#ifndef DEFAULT_ENTRY_ADDRESS
+#define DEFAULT_ENTRY_ADDRESS __start
+#endif
+
+unexec (new_name, a_name, data_start, bss_start, entry_address)
+     char *new_name, *a_name;
+     unsigned data_start, bss_start, entry_address;
+{
+  int new, old;
+  int pagesize, brk;
+  int newsyms, symrel;
+  int nread;
+  struct headers hdr;
+  int i;
+  int vaddr, scnptr;
+#define BUFSIZE 8192
+  char buffer[BUFSIZE];
+
+  old = open (a_name, O_RDONLY, 0);
+  if (old < 0) fatal_unexec ("opening %s", a_name);
+
+  new = creat (new_name, 0666);
+  if (new < 0) fatal_unexec ("creating %s", new_name);
+
+  hdr = *((struct headers *)TEXT_START);
+#ifdef MIPS2
+  if (hdr.fhdr.f_magic != MIPSELMAGIC
+      && hdr.fhdr.f_magic != MIPSEBMAGIC
+      && hdr.fhdr.f_magic != (MIPSELMAGIC | 1)
+      && hdr.fhdr.f_magic != (MIPSEBMAGIC | 1))
+    {
+      fprintf(stderr,
+	      "unexec: input file magic number is %x, not %x, %x, %x or %x.\n",
+	      hdr.fhdr.f_magic,
+	      MIPSELMAGIC, MIPSEBMAGIC,
+	      MIPSELMAGIC | 1, MIPSEBMAGIC | 1);
+      exit(1);
+    }
+#else /* not MIPS2 */
+  if (hdr.fhdr.f_magic != MIPSELMAGIC
+      && hdr.fhdr.f_magic != MIPSEBMAGIC)
+    {
+      fprintf (stderr, "unexec: input file magic number is %x, not %x or %x.\n",
+	       hdr.fhdr.f_magic, MIPSELMAGIC, MIPSEBMAGIC);
+      exit (1);
+    }
+#endif /* not MIPS2 */
+  if (hdr.fhdr.f_opthdr != sizeof (hdr.aout))
+    {
+      fprintf (stderr, "unexec: input a.out header is %d bytes, not %d.\n",
+	       hdr.fhdr.f_opthdr, sizeof (hdr.aout));
+      exit (1);
+    }
+  if (hdr.aout.magic != ZMAGIC)
+    {
+      fprintf (stderr, "unexec: input file a.out magic number is %o, not %o.\n",
+	       hdr.aout.magic, ZMAGIC);
+      exit (1);
+    }
+
+#define CHECK_SCNHDR(ptr, name, flags)					\
+  if (strcmp (hdr.section[i].s_name, name) == 0)			\
+    {									\
+      if (hdr.section[i].s_flags != flags)				\
+	fprintf (stderr, "unexec: %x flags (%x expected) in %s section.\n", \
+		 hdr.section[i].s_flags, flags, name);			\
+      ptr = hdr.section + i;						\
+      i += 1;								\
+    }									\
+  else									\
+    ptr = NULL;
+
+  i = 0;
+  CHECK_SCNHDR (text_section,  _TEXT,  STYP_TEXT);
+  CHECK_SCNHDR (init_section,  _INIT,  STYP_INIT);
+  CHECK_SCNHDR (rdata_section, _RDATA, STYP_RDATA);
+  CHECK_SCNHDR (data_section,  _DATA,  STYP_DATA);
+#ifdef _LIT8
+  CHECK_SCNHDR (lit8_section,  _LIT8,  STYP_LIT8);
+  CHECK_SCNHDR (lit4_section,  _LIT4,  STYP_LIT4);
+#endif /* _LIT8 */
+  CHECK_SCNHDR (sdata_section, _SDATA, STYP_SDATA);
+  CHECK_SCNHDR (sbss_section,  _SBSS,  STYP_SBSS);
+  CHECK_SCNHDR (bss_section,   _BSS,   STYP_BSS);
+  if (i != hdr.fhdr.f_nscns)
+    fprintf (stderr, "unexec: %d sections found instead of %d.\n",
+	     i, hdr.fhdr.f_nscns);
+
+  pagesize = getpagesize ();
+  brk = (sbrk (0) + pagesize - 1) & (-pagesize);
+  hdr.aout.dsize = brk - DATA_START;
+  hdr.aout.bsize = 0;
+  if (entry_address == 0)
+    {
+      extern DEFAULT_ENTRY_ADDRESS ();
+      hdr.aout.entry = (unsigned)DEFAULT_ENTRY_ADDRESS;
+    }
+  else
+    hdr.aout.entry = entry_address;
+
+  hdr.aout.bss_start = hdr.aout.data_start + hdr.aout.dsize;
+  rdata_section->s_size = data_start - DATA_START;
+  data_section->s_vaddr = data_start;
+  data_section->s_paddr = data_start;
+  data_section->s_size = brk - DATA_START;
+  data_section->s_scnptr = rdata_section->s_scnptr + rdata_section->s_size;
+  vaddr = data_section->s_vaddr + data_section->s_size;
+  scnptr = data_section->s_scnptr + data_section->s_size;
+  if (lit8_section != NULL)
+    {
+      lit8_section->s_vaddr = vaddr;
+      lit8_section->s_paddr = vaddr;
+      lit8_section->s_size = 0;
+      lit8_section->s_scnptr = scnptr;
+    }
+  if (lit4_section != NULL)
+    {
+      lit4_section->s_vaddr = vaddr;
+      lit4_section->s_paddr = vaddr;
+      lit4_section->s_size = 0;
+      lit4_section->s_scnptr = scnptr;
+    }
+  if (sdata_section != NULL)
+    {
+      sdata_section->s_vaddr = vaddr;
+      sdata_section->s_paddr = vaddr;
+      sdata_section->s_size = 0;
+      sdata_section->s_scnptr = scnptr;
+    }
+  if (sbss_section != NULL)
+    {
+      sbss_section->s_vaddr = vaddr;
+      sbss_section->s_paddr = vaddr;
+      sbss_section->s_size = 0;
+      sbss_section->s_scnptr = scnptr;
+    }
+  if (bss_section != NULL)
+    {
+      bss_section->s_vaddr = vaddr;
+      bss_section->s_paddr = vaddr;
+      bss_section->s_size = 0;
+      bss_section->s_scnptr = scnptr;
+    }
+
+  WRITE (new, TEXT_START, hdr.aout.tsize,
+	 "writing text section to %s", new_name);
+  WRITE (new, DATA_START, hdr.aout.dsize,
+	 "writing text section to %s", new_name);
+
+  SEEK (old, hdr.fhdr.f_symptr, "seeking to start of symbols in %s", a_name);
+  errno = EEOF;
+  nread = read (old, buffer, BUFSIZE);
+  if (nread < sizeof (HDRR)) fatal_unexec ("reading symbols from %s", a_name);
+#define symhdr ((pHDRR)buffer)
+  newsyms = hdr.aout.tsize + hdr.aout.dsize;
+  symrel = newsyms - hdr.fhdr.f_symptr;
+  hdr.fhdr.f_symptr = newsyms;
+  symhdr->cbLineOffset += symrel;
+  symhdr->cbDnOffset += symrel;
+  symhdr->cbPdOffset += symrel;
+  symhdr->cbSymOffset += symrel;
+  symhdr->cbOptOffset += symrel;
+  symhdr->cbAuxOffset += symrel;
+  symhdr->cbSsOffset += symrel;
+  symhdr->cbSsExtOffset += symrel;
+  symhdr->cbFdOffset += symrel;
+  symhdr->cbRfdOffset += symrel;
+  symhdr->cbExtOffset += symrel;
+#undef symhdr
+  do
+    {
+      if (write (new, buffer, nread) != nread)
+	fatal_unexec ("writing symbols to %s", new_name);
+      nread = read (old, buffer, BUFSIZE);
+      if (nread < 0) fatal_unexec ("reading symbols from %s", a_name);
+#undef BUFSIZE
+    } while (nread != 0);
+
+  SEEK (new, 0, "seeking to start of header in %s", new_name);
+  WRITE (new, &hdr, sizeof (hdr),
+	 "writing header of %s", new_name);
+
+  close (old);
+  close (new);
+  mark_x (new_name);
+}
+
+/*
+ * mark_x
+ *
+ * After succesfully building the new a.out, mark it executable
+ */
+
+static
+mark_x (name)
+     char *name;
+{
+  struct stat sbuf;
+  int um = umask (777);
+  umask (um);
+  if (stat (name, &sbuf) < 0)
+    fatal_unexec ("getting protection on %s", name);
+  sbuf.st_mode |= 0111 & ~um;
+  if (chmod (name, sbuf.st_mode) < 0)
+    fatal_unexec ("setting protection on %s", name);
+}
+
+static void
+fatal_unexec (s, va_alist)
+     va_dcl
+{
+  va_list ap;
+  if (errno == EEOF)
+    fputs ("unexec: unexpected end of file, ", stderr);
+  else if (errno < sys_nerr)
+    fprintf (stderr, "unexec: %s, ", sys_errlist[errno]);
+  else
+    fprintf (stderr, "unexec: error code %d, ", errno);
+  va_start (ap);
+  _doprnt (s, ap, stderr);
+  fputs (".\n", stderr);
+  exit (1);
+}
diff --git a/src/unexsunos4.c b/src/unexsunos4.c
new file mode 100644
index 00000000000..e95618ecc8a
--- /dev/null
+++ b/src/unexsunos4.c
@@ -0,0 +1,288 @@
+/*
+ * Unexec for Berkeley a.out format + SUNOS shared libraries
+ * The unexeced executable contains the __DYNAMIC area from the
+ * original text file,  and then the rest of data + bss + malloced area of
+ * the current process.  (The __DYNAMIC area is at the top of the process
+ * data segment,  we use "data_start" defined externally to mark the start
+ * of the "real" data segment.)
+ *
+ * For programs that want to remap some of the data segment read only
+ * a run_time_remap is provided.  This attempts to remap largest area starting
+ * and ending on page boundaries between "data_start" and "bndry"
+ * For this it to figure out where the text file is located.  A path search
+ * is attempted after trying argv[0] and if all fails we simply do not remap
+ *
+ * One feature of run_time_remap () is mandatory:  reseting the break.
+ *
+ *  Note that we can no longer map data into the text segment,  as this causes
+ *  the __DYNAMIC struct to become read only,  breaking the runtime loader.
+ *  Thus we no longer need to mess with a private crt0.c,  the standard one
+ *  will do just fine,  since environ can live in the writable area between
+ *  __DYNAMIC and data_start,  just make sure that pre-crt0.o (the name
+ *  is somewhat abused here) is loaded first!
+ *
+ * $Log:	unexsunos4.c,v $
+ * Revision 1.3  90/02/15  04:27:40  root
+ * Now it actually works.
+ * 
+ * Revision 1.2  90/02/15  02:02:01  root
+ * Many comments,  fixes,  works not only with emacs.
+ * 
+ * Revision 1.1  90/01/29  19:43:46  root
+ * Initial revision
+ * 
+ */
+#ifdef emacs
+#include "config.h"
+#endif
+
+#include <sys/param.h>
+#include <sys/mman.h>
+#include <sys/file.h>
+#include <sys/stat.h>
+#include <string.h>
+#include <stdio.h>
+#include <a.out.h>
+
+/*
+ * for programs other than emacs
+ * define data_start + initialized here,  and make sure
+ * this object is loaded first!
+ * emacs will define these elsewhere,  and load the object containing
+ * data_start (pre-crt0.o or firstfile.o?) first!
+ * The custom crt0.o *must not* be loaded!
+ */
+#ifndef emacs
+  static int data_start = 0;
+  static int initialized = 0;
+#else
+  extern int initialized;
+  extern unsigned data_start;
+  extern int pureptr;
+#endif
+
+extern char *getenv ();
+static unsigned Brk;
+static struct exec nhdr;
+static int rd_only_len;
+static long cookie;
+
+
+unexec (new_name, a_name, bndry, bss_start, entry) 
+     char *new_name, *a_name;
+     unsigned bndry, bss_start, entry;
+{
+  char buf[PAGSIZ];
+  int fd, new;
+  char *old;
+  struct exec ohdr;		/* Allocate on the stack,  not needed in the next life */
+  struct stat stat;
+
+#ifdef emacs
+  fprintf (stderr, "Used %d bytes of Pure Storage\n", pureptr);
+#endif
+
+  if ((fd = open (a_name, O_RDONLY)) < 0)
+    {
+      fprintf (stderr, "%s: open: ", a_name);
+      perror (a_name);
+      exit (1);
+    }
+  if ((new = open (new_name, O_WRONLY | O_CREAT, 0666)) == -1)
+    {
+      fprintf (stderr, "%s: open: ", a_name);
+      perror (new_name);
+      exit (1);
+    }
+
+  if ((fstat (fd, &stat) == -1))
+    {
+      fprintf (stderr, "%s: ", a_name);
+      perror ("fstat");
+      exit (1);
+    }
+
+  old = (char *)mmap (0, stat.st_size, PROT_READ, MAP_SHARED, fd, 0);
+  if (old == (char *)-1)
+    {
+      fprintf (stderr, "%s: ", a_name);
+      perror ("mmap");
+      exit (1);
+    }
+  close (fd);
+
+  nhdr = ohdr = (*(struct exec *)old);
+
+
+  /*
+   * Remeber a magic cookie so we know we've got the right binary
+   * when remaping.
+   */
+  cookie = time (0);
+
+  Brk = sbrk (0);		/* Save the break, it is reset to &_end (by ld.so?) */
+
+  /*
+   * Round up data start to a page boundary (Lose if not a 2 power!)
+   */
+  data_start = ((((int)&data_start) - 1) & ~(N_PAGSIZ (nhdr) - 1)) + N_PAGSIZ (nhdr);
+
+  /*
+   * Round down read only pages to a multiple of the page size
+   */
+  if (bndry)
+    rd_only_len = ((int)bndry & ~(N_PAGSIZ (nhdr) - 1)) - data_start;
+
+#ifndef emacs
+  /* Have to do this some time before dumping the data */
+  initialized = 1;
+#endif
+  
+  /* 
+   * Handle new data and bss sizes and optional new entry point.
+   * No one actually uses bss_start and entry,  but tradition compels
+   * one to support them.
+   * Could complain if bss_start > Brk,  but the caller is *supposed* to know
+   * what she is doing.
+   */
+  nhdr.a_data = (bss_start ? bss_start : Brk) - N_DATADDR (nhdr);
+  nhdr.a_bss  = bss_start ? Brk - bss_start : 0;
+  if (entry) 
+    nhdr.a_entry = entry;
+
+  /*
+   * Write out the text segment with new header
+   * Dynamic executables are ZMAGIC with N_TXTOFF==0 and the header
+   * part of the text segment, but no need to rely on this.
+   * So write the TEXT first,  then go back replace the header.
+   * Doing it in the other order is less general!
+   */
+  lseek (new, N_TXTOFF (nhdr), L_SET);
+  write (new, old + N_TXTOFF (ohdr), N_TXTOFF (ohdr) + ohdr.a_text);
+  lseek (new, 0L, L_SET);
+  write (new, &nhdr, sizeof (nhdr));
+
+  /*
+   * Write out the head of the old data segment from the file not
+   * from core, this has the unresolved __DYNAMIC relocation data
+   * we need to reload
+   */
+  lseek (new, N_DATOFF (nhdr), L_SET);
+  write (new, old + N_DATOFF (ohdr), (int)&data_start - N_DATADDR (ohdr));
+
+  /*
+   * Copy the rest of the data from core
+   */
+  write (new, &data_start, N_BSSADDR (nhdr) - (int)&data_start);
+
+  /*
+   * Copy the symbol table and line numbers
+   */
+  lseek (new, N_TRELOFF (nhdr), L_SET);
+  write (new, old + N_TRELOFF (ohdr), stat.st_size - N_TRELOFF (ohdr));
+
+  fchmod (new, 0755);
+}
+
+void
+run_time_remap (progname)
+     char *progname;
+{
+  char aout[MAXPATHLEN];
+  register char *path, *p;
+
+  /* Just in case */
+  if (!initialized)
+    return;
+
+  /* Restore the break */
+  brk (Brk);
+
+  /*  If nothing to remap:  we are done! */
+  if (rd_only_len == 0)
+    return;
+
+  /*
+   * Attempt to find the executable
+   * First try argv[0],  will almost always succeed as shells tend to give
+   * the full path from the hash list rather than using execvp ()
+   */
+  if (is_it (progname)) 
+    return;
+
+  /*
+   * If argv[0] is a full path and does not exist,  not much sense in
+   * searching further
+   */
+  if (strchr (progname, '/')) 
+    return;
+
+  /*
+   * Try to search for  argv[0] on the PATH
+   */
+  path = getenv ("PATH");
+  if (path == NULL)
+    return;
+
+  while (*path)
+    {
+      /* copy through ':' or end */
+      for (p = aout; *p = *path; ++p, ++path)
+	if (*p == ':')
+	  {
+	    ++path;		/* move past ':' */
+	    break;
+	  }
+      *p++ = '/';
+      strcpy (p, progname);
+      /*
+       * aout is a candidate full path name
+       */
+      if (is_it (aout))
+	return;
+    }
+}
+
+is_it (path)
+  char *path;
+{
+  int fd;
+  long paths_cookie;
+  struct exec hdr;
+
+  /*
+   * Open an executable  and check for a valid header!
+   * Can't bcmp() the header with what we had,  it may have been stripped!
+   * so we may save looking at non executables with the same name, mostly
+   * directories.
+   */
+  fd = open (path, O_RDONLY);
+  if (fd != -1)
+    {
+      if (read (fd, &hdr, sizeof (hdr)) == sizeof (hdr)
+	  && !N_BADMAG (hdr) && N_DATOFF (hdr) == N_DATOFF (nhdr)
+	  && N_TRELOFF (hdr) == N_TRELOFF (nhdr))
+	{
+	  /* compare cookies */
+	  lseek (fd, N_DATOFF (hdr) + (int)&cookie - N_DATADDR (hdr), L_SET);
+	  read (fd, &paths_cookie, sizeof (paths_cookie));
+	  if (paths_cookie == cookie)
+	    {			/* Eureka */
+
+	      /*
+	       * Do the mapping
+	       * The PROT_EXEC may not be needed,  but it is safer this way.
+	       * should the shared library decide to indirect through
+	       * addresses in the data segment not part of __DYNAMIC
+	       */
+	      mmap (data_start, rd_only_len, PROT_READ | PROT_EXEC,
+		    MAP_SHARED | MAP_FIXED, fd,
+		    N_DATOFF (hdr) + data_start - N_DATADDR (hdr));
+	      close (fd);
+	      return 1;
+	    }
+	}
+      close (fd);
+    }
+  return 0;
+}