Cygwin support patch.

[bpt/emacs.git] / src / mem-limits.h

diff --git a/src/mem-limits.h b/src/mem-limits.h
index 3bb40df..3ba8f3c 100644 (file)
--- a/src/mem-limits.h
+++ b/src/mem-limits.h
@@ -1,5 +1,5 @@
 /* Includes for memory limit warnings.
-   Copyright (C) 1990, 1993, 1994, 1995 Free Software Foundation, Inc.
+   Copyright (C) 1990, 1993, 1994, 1995, 1996 Free Software Foundation, Inc.
 
 This file is part of GNU Emacs.
 
@@ -15,10 +15,12 @@ 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.  */
+the Free Software Foundation, Inc., 59 Temple Place - Suite 330,
+Boston, MA 02111-1307, USA.  */
 
 #ifdef MSDOS
 #include <dpmi.h>
+extern int etext;
 #endif
 
 /* Some systems need this before <sys/resource.h>.  */
@@ -30,7 +32,7 @@ the Free Software Foundation, 675 Mass Ave, Cambridge, MA 02139, USA.  */
 #define BSD4_2                 /* Tell code below to use getrlimit.  */
 
 /* Old Linux startup code won't define __data_start.  */
-extern int etext, __data_start; weak_symbol (__data_start)
+extern int etext, __data_start; weak_extern (__data_start)
 #define start_of_data()        (&__data_start ?: &etext)
 
 #else /* not _LIBC */
@@ -44,6 +46,10 @@ extern int etext, __data_start; weak_symbol (__data_start)
 #define BSD4_2
 #endif
 
+#ifdef CYGWIN
+#define BSD4_2
+#endif
+
 #ifndef BSD4_2
 #ifndef USG
 #ifndef MSDOS
@@ -61,11 +67,7 @@ extern int etext, __data_start; weak_symbol (__data_start)
 /* The important properties of this type are that 1) it's a pointer, and
    2) arithmetic on it should work as if the size of the object pointed
    to has a size of 1.  */
-#ifdef __STDC__
-typedef void *POINTER;
-#else
-typedef char *POINTER;
-#endif
+typedef POINTER_TYPE *POINTER;
 
 typedef unsigned long SIZE;
 
@@ -82,12 +84,18 @@ extern POINTER start_of_data ();
 #define EXCEEDS_LISP_PTR(ptr) ((EMACS_UINT) (ptr) >> VALBITS)
 #endif
 
-#ifdef BSD
+#ifdef DATA_START
+#define start_of_data() ((char *)DATA_START)
+#endif
+
+#ifdef BSD_SYSTEM
 #ifndef DATA_SEG_BITS
+#ifndef DATA_START
 extern char etext;
 #define start_of_data() &etext
 #endif
 #endif
+#endif
 
 #else  /* not emacs */
 extern char etext;
@@ -101,7 +109,7 @@ extern char etext;
 static POINTER data_space_start;
 
 /* Number of bytes of writable memory we can expect to be able to get */
-static unsigned int lim_data;
+static unsigned long lim_data;
 
 #ifdef NO_LIM_DATA
 static void
@@ -121,7 +129,7 @@ get_lim_data ()
   lim_data = -1;
 
   /* Use the ulimit call, if we seem to have it.  */
-#if !defined (ULIMIT_BREAK_VALUE) || defined (LINUX)
+#if !defined (ULIMIT_BREAK_VALUE) || defined (GNU_LINUX)
   lim_data = ulimit (3, 0);
 #endif
 
@@ -140,8 +148,8 @@ get_lim_data ()
 static void
 get_lim_data ()
 {
-  extern unsigned long data_region_size;
-  lim_data = data_region_size;
+  extern unsigned long reserved_heap_size;
+  lim_data = reserved_heap_size;
 }
 
 #else