--- gcconfig.h	Mon Apr  8 16:37:20 2002
+++ gcconfig.h.sparc	Mon Apr 15 19:53:46 2002
@@ -815,11 +815,10 @@
       extern int _etext;
 #     define DATAEND (&_end)
 #     define SVR4
+#     define LINUX_STACKBOTTOM
 #     ifdef __arch64__
-#       define STACKBOTTOM ((ptr_t) 0x80000000000ULL)
 #	define DATASTART (ptr_t)GC_SysVGetDataStart(0x100000, &_etext)
 #     else
-#       define STACKBOTTOM ((ptr_t) 0xf0000000)
 #	define DATASTART (ptr_t)GC_SysVGetDataStart(0x10000, &_etext)
 #     endif
 #   endif