initial import

1 files changed, 42 insertions, 0 deletions

diff --git a/sysdeps/generic/sbrk.c b/sysdeps/generic/sbrk.c
new file mode 100644
index 0000000000..28beab62d5
--- /dev/null
+++ b/sysdeps/generic/sbrk.c
@@ -0,0 +1,42 @@
+/* Copyright (C) 1991, 1995 Free Software Foundation, Inc.
+This file is part of the GNU C Library.
+
+The GNU C Library 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 2, or (at your option)
+any later version.
+
+The GNU C Library is distributed in the hope that it will be useful,
+but WITHOUT ANY WARRANTY; without even the implied warranty of
+MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+GNU General Public License for more details.
+
+You should have received a copy of the GNU General Public License
+along with the GNU C Library; see the file COPYING.  If not, write to
+the Free Software Foundation, 675 Mass Ave, Cambridge, MA 02139, USA.  */
+
+#include <ansidecl.h>
+
+/* Defined in brk.c.  */
+extern PTR __curbrk;
+extern int EXFUN(__brk, (PTR addr));
+
+/* Extend the process's data space by INCREMENT.
+   If INCREMENT is negative, shrink data space by - INCREMENT.
+   Return start of new space allocated, or -1 for errors.  */
+PTR
+DEFUN(__sbrk, (increment), int increment)
+{
+  char *oldbrk;
+
+  if (increment == 0)
+    return __curbrk;
+
+  oldbrk = __curbrk;
+  if (__brk(oldbrk + increment) < 0)
+    return (PTR) -1;
+
+  return oldbrk;
+}
+
+weak_alias (__sbrk, sbrk)