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#!/usr/bin/env python
# vim:sw=4 ts=4 et
from __future__ import print_function
import kdumpfile
import addrxlat
from sys import argv
tbl_names = ( 'PAGE', 'PTE', 'PMD', 'PUD', 'PGD' )
class kphysnote(object):
def __init__(self, ctx, sys):
self.ctx = ctx
self.sys = sys
map = sys.get_map(addrxlat.SYS_MAP_MACHPHYS_KPHYS)
self.ident = True
for range in map:
if range.meth == addrxlat.SYS_METH_NONE:
continue
meth = sys.get_meth(range.meth)
if meth.kind != addrxlat.LINEAR or meth.off != 0:
self.ident = False
break
def note(self, fulladdr, fmt='{}'):
if self.ident or fulladdr.addrspace == addrxlat.KPHYSADDR:
return ''
tmp = fulladdr.copy()
try:
tmp.conv(addrxlat.KPHYSADDR, self.ctx, self.sys)
return fmt.format('{:x}'.format(tmp.addr))
except (addrxlat.NotPresentError, addrxlat.NoDataError):
return fmt.format('N/A')
def vtop(addr, ctx, sys):
fulladdr = addrxlat.FullAddress(addrxlat.KVADDR, addr)
print('{:16} {:16}'.format('VIRTUAL', 'PHYSICAL'))
try:
fulladdr.conv(addrxlat.KPHYSADDR, ctx, sys)
print('{:<16x} {:<16x}\n'.format(addr, fulladdr.addr))
except addrxlat.BaseException:
print('{:<16x} {:<16}\n'.format(addr, '---'))
step = addrxlat.Step(ctx, sys)
meth = sys.get_map(addrxlat.SYS_MAP_HW).search(addr)
if meth == addrxlat.SYS_METH_NONE:
meth = sys.get_map(addrxlat.SYS_MAP_KV_PHYS).search(addr)
if meth == addrxlat.SYS_METH_NONE:
print('NO METHOD')
return
step.meth = sys.get_meth(meth)
step.launch(addr)
note = kphysnote(ctx, sys)
while step.remain:
tbl = tbl_names[step.remain - 1]
if step.remain > 1:
addr = step.base.copy()
addr.addr += step.idx[step.remain - 1] * step.elemsz
else:
addr = step.base
remark = note.note(addr, ' ({})')
print('{:>4}: {:16x}{}'.format(tbl, addr.addr, remark), end='')
try:
step.step()
if step.remain and step.raw is not None:
print(' => {:x}'.format(step.raw))
except addrxlat.NotPresentError:
print(' => {:x} NOT PRESENT'.format(step.raw))
return
print()
if len(argv) != 3:
print('Usage: {} <dumpfile> <virtual address>'.format(argv[0]))
exit(1)
kdf = kdumpfile.kdumpfile(argv[1])
kdf.addrxlat_convert = addrxlat.convert
kdf.attr['addrxlat.ostype'] = 'linux'
sys = kdf.get_addrxlat_sys()
ctx = kdf.get_addrxlat_ctx()
addr = int(argv[2], base=0)
try:
vtop(addr, ctx, sys)
except addrxlat.BaseException as e:
print('Translation failed: {}'.format(e.message))
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