implement is_thunk, closes PR #3343

2 files changed, 15 insertions, 0 deletions

diff --git a/python/function.py b/python/function.py
index e909ed0a..9a0f099a 100644
--- a/python/function.py
+++ b/python/function.py
@@ -567,6 +567,14 @@ class Function:
 		return BasicBlockList(self)
 
 	@property
+	def is_thunk(self) -> bool:
+		"""Returns True if the function starts with a Tailcall (read-only)"""
+		if self.llil_if_available is not None:
+			return self.llil_if_available.is_thunk
+		else:
+			return False
+
+	@property
 	def comments(self) -> Dict[int, str]:
 		"""Dict of comments (read-only)"""
 		count = ctypes.c_ulonglong()
diff --git a/python/lowlevelil.py b/python/lowlevelil.py
index 137a2d77..74b9e104 100644
--- a/python/lowlevelil.py
+++ b/python/lowlevelil.py
@@ -2877,6 +2877,13 @@ class LowLevelILFunction:
 			core.BNFreeLLILVariablesList(registers)
 
 	@property
+	def is_thunk(self) -> bool:
+		"""Returns True if the function starts with a Tailcall (read-only)"""
+		if len(self.basic_blocks) == 1:
+			return isinstance(self.basic_blocks[0][-1], Tailcall)
+		return False
+
+	@property
 	def register_stacks(self) -> List[ILRegisterStack]:
 		""" List of register stacks used in this IL """
 		count = ctypes.c_ulonglong()