def extract_function_loop(f):
edges = []
# construct control flow graph
for b in f.blocks:
for c in b.calls:
edges.append((b.addr_start, c))
if loops.has_loop(edges):
yield Characteristic("loop"), f.addr_start
def extract_function_loop(f):
"""
parse if a function has a loop
"""
edges = []
for bb_from, bb_tos in f.blockrefs.items():
for bb_to in bb_tos:
edges.append((bb_from, bb_to))
if edges and loops.has_loop(edges):
yield Characteristic("loop"), f.offset
def extract_function_loop(f):
"""
parse if a function has a loop
"""
edges = []
for bb in f.basic_blocks:
if len(bb.instructions) > 0:
for bva, bflags in bb.instructions[-1].getBranches():
if bflags & vivisect.envi.BR_COND or bflags & vivisect.envi.BR_FALL or bflags & vivisect.envi.BR_TABLE:
edges.append((bb.va, bva))
if edges and loops.has_loop(edges):
yield Characteristic("loop"), f.va
def extract_function_loop(f):
""" extract loop indicators from a function
args:
f (IDA func_t)
"""
edges = []
# construct control flow graph
for bb in idaapi.FlowChart(f):
for succ in bb.succs():
edges.append((bb.start_ea, succ.start_ea))
if loops.has_loop(edges):
yield Characteristic("loop"), f.start_ea
def extract_function_loop(f):
"""
parse if a function has a loop
"""
edges = []
for bb in f.basic_blocks:
if len(bb.instructions) > 0:
for bva, bflags in bb.instructions[-1].getBranches():
# vivisect does not set branch flags for non-conditional jmp so add explicit check
if (bflags & envi.BR_COND or bflags & envi.BR_FALL
or bflags & envi.BR_TABLE
or bb.instructions[-1].mnem == "jmp"):
edges.append((bb.va, bva))
if edges and loops.has_loop(edges):
yield Characteristic("loop"), f.va
