1 files changed, 42 insertions, 0 deletions
diff --git a/libsigsegv/src/stackvma-simple.c b/libsigsegv/src/stackvma-simple.c
new file mode 100644
index 00000000..3e800373
--- /dev/null
+++ b/libsigsegv/src/stackvma-simple.c
@@ -0,0 +1,42 @@
+/* Determine the virtual memory area of a given address.
+   Copyright (C) 2006  Bruno Haible <bruno@clisp.org>
+
+   This program 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.
+
+   This program 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 this program; if not, write to the Free Software Foundation,
+   Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.  */
+
+/* This file contains the proximity test function for the simple cases, where
+   the OS has an API for enumerating the mapped ranges of virtual memory.  */
+
+#if STACK_DIRECTION < 0
+
+/* Info about the gap between this VMA and the previous one.
+   addr must be < vma->start.  */
+static int
+simple_is_near_this (unsigned long addr, struct vma_struct *vma)
+{
+  return (vma->start - addr <= (vma->start - vma->prev_end) / 2);
+}
+
+#endif
+#if STACK_DIRECTION > 0
+
+/* Info about the gap between this VMA and the next one.
+   addr must be > vma->end - 1.  */
+static int
+simple_is_near_this (unsigned long addr, struct vma_struct *vma)
+{
+  return (addr - vma->end < (vma->next_start - vma->end) / 2);
+}
+
+#endif