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)
+the Free Software Foundation; either version 2, or (at your option)
any later version.
GNU Emacs is distributed in the hope that it will be useful,
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. */
/* Define PURESIZE, the number of bytes of pure Lisp code to leave space for.
/* First define a measure of the amount of data we have. */
-#ifndef BASE_PURESIZE
-#ifdef MULTI_FRAME
-#define BASE_PURESIZE 260000
-#else
-#define BASE_PURESIZE 215000
+/* A system configuration file may set this to request a certain extra
+ amount of storage. This is a lot more update-robust that defining
+ BASE_PURESIZE or even PURESIZE directly. */
+#ifndef SYSTEM_PURESIZE_EXTRA
+#define SYSTEM_PURESIZE_EXTRA 0
#endif
+
+#ifndef SITELOAD_PURESIZE_EXTRA
+#define SITELOAD_PURESIZE_EXTRA 0
+#endif
+
+#ifndef BASE_PURESIZE
+#define BASE_PURESIZE (490000 + SYSTEM_PURESIZE_EXTRA + SITELOAD_PURESIZE_EXTRA)
#endif
/* Increase BASE_PURESIZE by a ratio depending on the machine's word size. */
#define PURESIZE (BASE_PURESIZE * PURESIZE_RATIO)
#endif
-#ifdef VIRT_ADDR_VARIES
+/* Signal an error if OBJ is pure. */
+#define CHECK_IMPURE(obj) \
+ { if (PURE_P (obj)) \
+ pure_write_error (); }
+
+extern void pure_write_error P_ ((void));
+\f
+/* Define PURE_P. */
+#ifdef VIRT_ADDR_VARIES
/* For machines like APOLLO where text and data can go anywhere
in virtual memory. */
-#define CHECK_IMPURE(obj) \
- { extern EMACS_INT pure[]; \
- if ((PNTR_COMPARISON_TYPE) XPNTR (obj) < (PNTR_COMPARISON_TYPE) ((char *) pure + PURESIZE) \
- && (PNTR_COMPARISON_TYPE) XPNTR (obj) >= (PNTR_COMPARISON_TYPE) pure) \
- pure_write_error (); }
+
+extern EMACS_INT pure[];
+
+#define PURE_P(obj) \
+ ((PNTR_COMPARISON_TYPE) XPNTR (obj) < (PNTR_COMPARISON_TYPE) ((char *) pure + PURESIZE) \
+ && (PNTR_COMPARISON_TYPE) XPNTR (obj) >= (PNTR_COMPARISON_TYPE) pure)
#else /* not VIRT_ADDR_VARIES */
#ifdef PNTR_COMPARISON_TYPE
+/* When PNTR_COMPARISON_TYPE is not the default (unsigned int). */
-/* when PNTR_COMPARISON_TYPE is not the default (unsigned int) */
-#define CHECK_IMPURE(obj) \
- { extern EMACS_INT my_edata; \
- if ((PNTR_COMPARISON_TYPE) XPNTR (obj) < (PNTR_COMPARISON_TYPE) &my_edata) \
- pure_write_error (); }
+extern char my_edata[];
+
+#define PURE_P(obj) \
+ ((PNTR_COMPARISON_TYPE) XPNTR (obj) < (PNTR_COMPARISON_TYPE) my_edata)
#else /* not VIRT_ADDRESS_VARIES, not PNTR_COMPARISON_TYPE */
-#define CHECK_IMPURE(obj) \
- { extern EMACS_INT my_edata; \
- if (XPNTR (obj) < (unsigned int) &my_edata) \
- pure_write_error (); }
+extern char my_edata[];
+
+#define PURE_P(obj) \
+ (XPNTR (obj) < (unsigned int) my_edata)
#endif /* PNTR_COMPARISON_TYPE */
#endif /* VIRT_ADDRESS_VARIES */