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Load libSystem.dylib instead of libc.so.6 on macOS #591

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Load libSystem.dylib instead of libc.so.6 on macOS #591

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23 changes: 21 additions & 2 deletions speculos/main.py
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Original file line number Diff line number Diff line change
Expand Up @@ -14,6 +14,7 @@
import socket
import sys
import threading
import time
from dataclasses import dataclass
from elftools.elf.elffile import ELFFile
from ledgered.binary import LedgerBinaryApp
Expand Down Expand Up @@ -67,8 +68,26 @@ def set_pdeath(sig):
'''Set the parent death signal of the calling process.'''

PR_SET_PDEATHSIG = 1
libc = ctypes.cdll.LoadLibrary('libc.so.6')
libc.prctl(PR_SET_PDEATHSIG, sig)
if sys.platform.startswith('linux'):
libc = ctypes.cdll.LoadLibrary('libc.so.6')
libc.prctl(PR_SET_PDEATHSIG, sig)
elif sys.platform == 'darwin':
libc = ctypes.cdll.LoadLibrary('libSystem.dylib')
parent_pid = os.getppid()
def monitor_parent():
while True:
try:
result = libc.kill(parent_pid, 0)
if result != 0:
libc.kill(os.getpid(), sig)
break
except:
libc.kill(os.getpid(), sig)
break
time.sleep(1)
monitor_thread = threading.Thread(target=monitor_parent, daemon=True)
monitor_thread.start()



def get_elf_infos(app_path, use_bagl, args):
Expand Down