X-Git-Url: https://git.whamcloud.com/?p=fs%2Flustre-release.git;a=blobdiff_plain;f=contrib%2Fdebug_tools%2Fepython_scripts%2Fcrashlib%2Faddrlib.py;fp=contrib%2Fdebug_tools%2Fepython_scripts%2Fcrashlib%2Faddrlib.py;h=d06a7697e3919b6860517ca40fc3f96a98536d89;hp=0000000000000000000000000000000000000000;hb=4249b02f5c4c8a14faa0b88479b8eac75b212617;hpb=0cc48c4adbe540f8e529f80e4262b6ff47649e7c

diff --git a/contrib/debug_tools/epython_scripts/crashlib/addrlib.py b/contrib/debug_tools/epython_scripts/crashlib/addrlib.py
new file mode 100644
index 0000000..d06a769
--- /dev/null
+++ b/contrib/debug_tools/epython_scripts/crashlib/addrlib.py
@@ -0,0 +1,22 @@
+
+"""
+Set of routines for manipulating addresses.
+Copyright 2014 Cray Inc.  All Rights Reserved
+"""
+
+import crashlib.cid
+import crashlib.cid.machdep_table
+
+# --------------------------------------------------------------------------
+
+def ptov(physaddr):
+    """Convert a physical address to a kernel virtual address."""
+    return int(physaddr) + crashlib.cid.mdtbl.kvbase
+
+def phys2pfn(physaddr):
+    """Convert a physical address to a page offset."""
+    return physaddr >> crashlib.cid.mdtbl.pageshift
+
+def pfn2phys(pfn):
+    """Convert a page offset into a physical address."""
+    return pfn << crashlib.cid.mdtbl.pageshift