20000317 sourceware import

libgloss/rs6000/sim-sbrk.c

@@ -0,0 +1,30 @@
+/*
+ * sim-sbrk.c -- PowerPC sbrk support when running under the simulator.
+ *
+ * Copyright (c) 1995 Cygnus Support
+ *
+ * The authors hereby grant permission to use, copy, modify, distribute,
+ * and license this software and its documentation for any purpose, provided
+ * that existing copyright notices are retained in all copies and that this
+ * notice is included verbatim in any distributions. No written agreement,
+ * license, or royalty fee is required for any of the authorized uses.
+ * Modifications to this software may be copyrighted by their authors
+ * and need not follow the licensing terms described here, provided that
+ * the new terms are clearly indicated on the first page of each file where
+ * they apply.
+ */
+
+extern char _end[];
+static char *curbrk = _end;
+
+char *
+sbrk (incr)
+     int incr;
+{
+  char *oldbrk = curbrk;
+  curbrk += incr;
+  if (brk (curbrk) == -1)
+    return (char *) -1;
+
+  return oldbrk;
+}