def dw_op_breg(obj, data, _num):
data = pack(data)
result, blen = read_sleb128(data)
sz = env.op_ptr.size
offset = env.cst(result, blen * 8).signextend(sz)
obj.operands = [env.reg("reg%d" % _num, sz) + offset]
obj.bytes += data[:blen]
obj.type = type_data_processing
def dw_op_bregx(obj, data):
data = pack(data)
indx, blen = read_leb128(data)
sz = env.op_ptr.size
r = env.reg("reg%d" % indx, sz)
obj.bytes += data[:blen]
data = data[blen:]
result, blen = read_sleb128(data)
offset = env.cst(result, blen * 8).signextend(sz)
obj.operands = [r + offset]
obj.bytes += data[:blen]
obj.type = type_data_processing
def dw_op_block(obj, data):
data = pack(data)
bt = data[0]
if bt == 0x40:
obj.bt = 0x40
obj.bytes += data[0:1]
elif bt in env.valtype:
obj.bt = env.valtype[bt]
obj.bytes += data[0:1]
else:
obj.bt, blen = read_sleb128(data)
obj.bytes += data[0:blen]
obj.operands = [obj.bt]
obj.type = type_control_flow