from xnu import *
@lldb_command('showpgtrace')
def ShowPgtrace(cmd_args=None, cmd_options={}):
""" Display pgtrace buffer contents
Usage: showpgtrace
"""
max_entry = kern.globals.pgtrace.size
rd_idx = kern.globals.pgtrace.rdidx
wr_idx = kern.globals.pgtrace.wridx
print "-"*80
print "rd_idx=%d wr_idx=%d num_entries=%d max_entry=%d" % (rd_idx, wr_idx, wr_idx-rd_idx, max_entry)
print "-"*80
rw_str = { GetEnumValue('pgtrace_rw_t::PGTRACE_RW_LOAD'): "R",
GetEnumValue('pgtrace_rw_t::PGTRACE_RW_STORE'): "W",
GetEnumValue('pgtrace_rw_t::PGTRACE_RW_PREFETCH'): "P" }
while rd_idx != wr_idx:
clipped_idx = rd_idx % max_entry
entry = kern.globals.pgtrace.logs + sizeof('log_t') * clipped_idx
entry = kern.GetValueFromAddress(entry, 'log_t *')
entry_str = "[%d] id=%lu time=%lu %s " % (clipped_idx, entry.id, entry.res.rr_time, rw_str[int(entry.res.rr_rw)])
for i in range(entry.res.rr_num):
entry_str += "%x=%x " % (entry.res.rr_addrdata[i].ad_addr, entry.res.rr_addrdata[i].ad_data)
print entry_str
rd_idx += 1