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import gdb, sys
inf = gdb.selected_inferior()
pid = inf.pid
base = None
for line in open("/proc/%d/maps" % pid):
if "libnvidia-eglcore.so.570.144" in line:
parts = line.split()
lo, hi = [int(x, 16) for x in parts[0].split('-')]
off = int(parts[2], 16)
if off == 0:
base = lo
break
if base is None:
print("EGLBASE not found"); gdb.execute("detach"); sys.exit(1)
COUNT = base + 0x2070b7c
print("EGLBASE 0x%x PID %d COUNT_ADDR 0x%x" % (base, pid, COUNT))
def rd(a, n):
return inf.read_memory(a, n).tobytes()
def u32(a):
return int.from_bytes(rd(a, 4), 'little')
state = {"n": 0}
class B(gdb.Breakpoint):
def __init__(self, spec, limit=100000):
super().__init__(spec, internal=False)
self.limit = limit; self.hits = 0
self.silent = True
def stop(self):
self.hits += 1
try:
v = u32(COUNT)
if v:
state["n"] += 1
if state["n"] <= 8:
print("CLEAR count %u -> 0 (hit %d)" % (v, self.hits))
gdb.execute("set {unsigned int}0x%x = 0" % COUNT)
except Exception as e:
print("ERR", e)
return self.hits >= 400
B("*0x%x" % (base+0xa85d24), 400)
try:
gdb.execute("continue")
except gdb.error as e:
print("CONT-ERR %s" % e)
except KeyboardInterrupt:
pass
print("TRACE-END clears=%d" % state["n"])
try:
gdb.execute("detach")
except gdb.error as e:
print("DETACH-ERR %s" % e)
gdb.execute("quit")
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