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support multihreading ql.restore operation after ql.save(call qiling.os.linux.thread._prepare_lib_patch only once) #1484

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support multihreading ql.restore operation after ql.save(call qiling.os.linux.thread._prepare_lib_patch only once) #1484

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8 changes: 7 additions & 1 deletion qiling/os/linux/thread.py
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Original file line number Diff line number Diff line change
Expand Up @@ -572,7 +572,13 @@ def _clear_queued_msg(self):
pass

def _prepare_lib_patch(self):
if self.ql.loader.elf_entry != self.ql.loader.entry_point:
# If current control flow comes from a second call of ql.run method, which means
# we have complished the preparation of library patch, then ql.entry_point would
# be the next instruction needed to execute, so we do not need do library patch twice now.
if self.ql.entry_point is not None:
self.ql.loader.elf_entry = self.ql.entry_point
return None
elif self.ql.loader.elf_entry != self.ql.loader.entry_point:
entry_address = self.ql.loader.elf_entry

if self.ql.arch.type == QL_ARCH.ARM:
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