Viewing: addrlib.py
"""
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 >> int(crashlib.cid.mdtbl.pageshift)
def pfn2phys(pfn):
"""Convert a page offset into a physical address."""
return int(pfn) << int(crashlib.cid.mdtbl.pageshift)
