/* -----------------------------------------------------------------------------
- * $Id: MBlock.h,v 1.4 1999/02/05 16:02:45 simonm Exp $
+ * $Id: MBlock.h,v 1.10 2001/07/26 03:26:28 ken Exp $
*
* (c) The GHC Team, 1998-1999
*
extern lnat mblocks_allocated;
+#ifdef ENABLE_WIN32_DLL_SUPPORT
+extern int is_heap_alloced(const void* p);
+#endif
+
extern void * getMBlock(void);
extern void * getMBlocks(nat n);
+
+#if freebsd2_TARGET_OS || freebsd_TARGET_OS
+/* Executable is loaded from 0x0
+ * Shared libraries are loaded at 0x2000000
+ * Stack is at the top of the address space. The kernel probably owns
+ * 0x8000000 onwards, so we'll pick 0x5000000.
+ */
+#define HEAP_BASE 0x50000000
+
+#elif netbsd_TARGET_OS
+/* NetBSD i386 shared libs are at 0x40000000
+ */
+#define HEAP_BASE 0x50000000
+#elif openbsd_TARGET_OS
+#define HEAP_BASE 0x50000000
+#elif linux_TARGET_OS
+/* Any ideas?
+ */
+#define HEAP_BASE 0x50000000
+
+#elif solaris2_TARGET_OS
+/* guess */
+#define HEAP_BASE 0x50000000
+
+#elif osf3_TARGET_OS
+/* ToDo: Perhaps by adjusting this value we can make linking without
+ * -static work (i.e., not generate a core-dumping executable)? */
+#if SIZEOF_VOID_P == 8
+#define HEAP_BASE 0x180000000L
+#else
+#error I have no idea where to begin the heap on a non-64-bit osf3 machine.
+#endif
+
+#elif hpux_TARGET_OS
+/* guess */
+#define HEAP_BASE 0x50000000
+
+#elif macosx_TARGET_OS
+/* guess */
+#define HEAP_BASE 0x50000000
+
+#elif defined(mingw32_TARGET_OS) || defined(cygwin32_TARGET_OS)
+/* doesn't matter, we use a reserve/commit algorithm */
+
+#else
+#error Dont know where to get memory from on this architecture
+/* ToDo: memory locations on other architectures */
+#endif