1 files changed, 48 insertions, 0 deletions
diff --git a/libsigsegv/src/stackvma.h b/libsigsegv/src/stackvma.h
new file mode 100644
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--- /dev/null
+++ b/libsigsegv/src/stackvma.h
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+/* Determine the virtual memory area of a given address.
+   Copyright (C) 2002, 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.  */
+
+#ifndef _STACKVMA_H
+#define _STACKVMA_H
+
+/* Describes a virtual memory area, with some info about the gap between
+   it and the next or previous virtual memory area.  */
+struct vma_struct
+{
+  unsigned long start;
+  unsigned long end;
+#if STACK_DIRECTION < 0
+  /* Info about the gap between this VMA and the previous one.
+     addr must be < vma->start.  */
+  int (*is_near_this) (unsigned long addr, struct vma_struct *vma);
+  /* Private field, not provided by all sigsegv_get_vma implementations.  */
+  unsigned long prev_end;
+#endif
+#if STACK_DIRECTION > 0
+  /* Info about the gap between this VMA and the next one.
+     addr must be > vma->end - 1.  */
+  int (*is_near_this) (unsigned long addr, struct vma_struct *vma);
+  /* Private field, not provided by all sigsegv_get_vma implementations.  */
+  unsigned long next_start;
+#endif
+};
+
+/* Determines the virtual memory area to which a given address belongs,
+   and returns 0.  Returns -1 if it cannot be determined.
+   This function is used to determine the stack extent when a fault occurs.  */
+extern int sigsegv_get_vma (unsigned long address, struct vma_struct *vma);
+
+#endif /* _STACKVMA_H */