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instructions.py
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import logging
from utils import LogHandler
from helpers import *
handler = LogHandler()
log = logging.getLogger(__name__)
log.addHandler(handler)
# log.setLevel(logging.INFO)
log.setLevel(logging.ERROR)
class InstructionReturn:
def __init__(self, ret, is_external_call, parameters):
self.ret = ret
self.is_external_call = is_external_call
self.parameters = parameters
class Instruction:
def __init__(self, opcode):
self.fmt: int = 0x0
self.prefix: str = "NOP"
self.suffix: str = ""
self.opcode = opcode
self.address = 0
# used by some instructions
self.operator_type = 0
self.operand_type = 0
def decode_args_by_format(self, fmt: int, fd) -> tuple:
decoded_args: list = []
returned_args: list = []
t: int = fmt & 0xF
fmt >>= 4
# argument_length in nibbles
arg_length: int = 1
while fmt:
if t != fmt & 0xF:
decoded_args.append({'len': arg_length, 'signed': t >= 0xA})
arg_length = 1
t = fmt & 0xF
else:
arg_length += 1
fmt >>= 4
decoded_args.append({'len': arg_length, 'signed': t >= 0xA})
while len(decoded_args) > 0:
decoded_arg = decoded_args.pop()
if decoded_arg['len'] == 1:
byte = b2i(fd.read(1))
nibble0: int = nibble_at(byte, 0)
nibble1: int = nibble_at(byte, 1)
if decoded_arg['signed']:
nibble0 = twos_complement(nibble0, 0.5)
decoded_arg = decoded_args.pop()
if decoded_arg['signed']:
nibble1 = twos_complement(nibble1, 0.5)
returned_args += [nibble0, nibble1]
else:
bytez = b2i(fd.read(decoded_arg['len'] // 2))
if decoded_arg['signed']:
bytez = twos_complement(bytez, decoded_arg['len'] // 2)
returned_args.append(bytez)
return tuple(returned_args) if len(returned_args) > 1 else returned_args[0]
def decode_args(self, fd) -> tuple:
return self.decode_args_by_format(self.fmt, fd)
def print_instruction(self) -> None:
raise NotImplementedError()
def fetch(self) -> None:
raise NotImplementedError()
def decode(self, fd) -> None:
self.address = fd.tell() - 1
def execute(self, memory, v):
new_pc = self.address + 1 + (self.fmt.bit_length() + 7) // 8
# align PC to 2 bytes
new_pc += new_pc % 2
log.debug(new_pc)
return InstructionReturn(new_pc, False, [])
class OpCodeNotFoundError(Exception):
def __init__(self, opcode):
super().__init__("%s not defined, try another decoder!" % hex(opcode))
class Move(Instruction):
def fetch(self) -> None:
self.prefix = "MOVE(OBJ)"
match self.opcode:
case 0x01 | 0x07 | 0x04:
self.fmt = 0x12
case 0x02 | 0x08 | 0x05:
self.suffix = "/FROM16"
self.fmt = 0x112222
case 0x03 | 0x09 | 0x06:
self.suffix = "/16"
self.fmt = 0x11112222
case _:
raise OpCodeNotFoundError(self.opcode)
def decode(self, fd) -> None:
super().decode(fd)
# align bytes
if self.opcode in [0x03, 0x09, 0x06]:
fd.read(1)
(self.vA, self.vB) = self.decode_args(fd)
def print_instruction(self):
log.debug("%s%s v%s v%s" % (self.prefix, self.suffix, self.vA, self.vB))
def execute(self, memory, v):
if self.opcode not in [0x04, 0x05, 0x06]:
v[self.vA] = v[self.vB]
else:
# DO WIDE MOVE
v[self.vA] = v[self.vB]
v[self.vA + 1] = v[self.vB + 1]
return super().execute(memory, v)
class MoveResult(Instruction):
def fetch(self) -> None:
self.prefix = "MOVE-RESULT(EX)"
match self.opcode:
case 0x0a | 0x0b | 0x0c | 0x0d:
self.fmt = 0x11
case _:
raise OpCodeNotFoundError(self.opcode)
def decode(self, fd) -> None:
super().decode(fd)
self.vA = self.decode_args(fd)
def print_instruction(self):
log.debug("%s v%s" % (self.prefix, self.vA))
def execute(self, memory, v):
if self.opcode != 0x0b:
v[self.vA] = memory.last_return
else:
# handle wide
try:
v[self.vA] = memory.last_return[0]
v[self.vA + 1] = memory.last_return[1]
except TypeError as te:
# handle null returns from the API translator
v[self.vA] = 0
v[self.vA + 1] = 0
return super().execute(memory, v)
class Return(Instruction):
def fetch(self) -> None:
self.prefix = "RETURN"
match self.opcode:
case 0x0e | 0x0f | 0x10 | 0x11:
self.fmt = 0x11
case _:
raise OpCodeNotFoundError(self.opcode)
def decode(self, fd) -> None:
super().decode(fd)
self.vA = self.decode_args(fd)
def print_instruction(self):
if self.opcode != 0x0e:
log.debug("%s v%s" % (self.prefix, self.vA))
else:
log.debug("%s-VOID" % self.prefix)
def execute(self, memory, v):
if self.opcode == 0x0e:
pass
elif self.opcode == 0x10:
memory.last_return = (v[self.vA], v[self.vA + 1])
else:
memory.last_return = v[self.vA]
return super().execute(memory, v)
class Nop(Instruction):
def fetch(self) -> None:
pass
def decode(self, fd) -> None:
super().decode(fd)
pass
def print_instruction(self):
log.debug("NOP")
def execute(self, memory, v):
return super().execute(memory, v)
class Const(Instruction):
def fetch(self) -> None:
self.prefix = "CONST"
match self.opcode:
case 0x12:
self.suffix = "/4"
self.fmt = 0x1A
case 0x13:
self.suffix = "/16"
self.fmt = 0x11AAAA
case 0x14:
self.suffix = ""
self.fmt = 0x11AAAAAAAA
case 0x15:
self.suffix = "/HIGH16" # 420#BLAZEIT
self.fmt = 0x11AAAA
case 0x16:
self.suffix = "-WIDE/16"
self.fmt = 0x11AAAA
case 0x17:
self.suffix = "-WIDE/32"
self.fmt = 0x11AAAAAAAA
case 0x18:
self.suffix = "-WIDE"
self.fmt = 0x11AAAAAAAAAAAAAAAA
case 0x19:
self.suffix = "WIDE/HIGH16"
self.fmt = 0x11AAAA
case 0x1a:
self.suffix = "-STRING"
self.fmt = 0x112222
case 0x1b:
self.suffix = "-STRING/JUMBO"
self.fmt = 0x1122222222
case 0x1c:
self.suffix = "-CLASS"
self.fmt = 0x112222
case _:
raise OpCodeNotFoundError(self.opcode)
def decode(self, fd) -> None:
super().decode(fd)
(self.vA, self.vB) = self.decode_args(fd)
def print_instruction(self):
log.debug("%s%s v%s %s" % (self.prefix, self.suffix, self.vA, self.vB))
def execute(self, memory, v):
if self.opcode in [0x1a, 0x1b]:
pass
match self.opcode:
case 0x12 | 0x13 | 0x14 | 0x18:
v[self.vA] = self.vB
case 0x15:
v[self.vA] = self.vB << 16
case 0x16:
v[self.vA] = self.vB # << 48
case 0x17:
v[self.vA] = self.vB # << 32
case 0x19:
v[self.vA] = self.vB << 48
case 0x1a | 0x1b:
# do string lookup here
v[self.vA] = memory.dex.string_ids[self.vB].value.raw_data
case 0x1c:
# do class lookup here
v[self.vA] = self.vB
case _:
raise OpCodeNotFoundError(self.opcode)
# redistribute across 2 registers for wide movement
if self.opcode in [0x16, 0x17, 0x18, 0x19]:
v[self.vA + 1] = v[self.vA] & 0xFFFFFFFF
v[self.vA] >>= 32
return super().execute(memory, v)
class Monitor(Instruction):
def print_instruction(self):
log.debug("MONITOR-ENTER/EXIT %s" % self.vA)
def fetch(self) -> None:
self.fmt = 0x11
def decode(self, fd) -> None:
super().decode(fd)
self.vA = self.decode_args(fd)
class CheckCast(Instruction):
def print_instruction(self):
log.debug("CHECK-CAST %s v%s" % (self.vA, self.vB))
def fetch(self) -> None:
self.fmt = 0x112222
def decode(self, fd) -> None:
super().decode(fd)
(self.vA, self.vB) = self.decode_args(fd)
class InstanceOf(Instruction):
def print_instruction(self):
log.debug("INSTANCE-OF v%s v%s @%s" % (self.vA, self.vB, self.vC))
def fetch(self) -> None:
self.fmt = 0x123333
def decode(self, fd) -> None:
super().decode(fd)
(self.vA, self.vB, self.vC) = self.decode_args(fd)
class ArrLength(Instruction):
def fetch(self) -> None:
self.prefix = "ARRAY-LENGTH"
match self.opcode:
case 0x21:
self.fmt = 0x12
case _:
raise OpCodeNotFoundError(self.opcode)
def decode(self, fd) -> None:
super().decode(fd)
(self.vA, self.vB) = self.decode_args(fd)
def print_instruction(self):
log.debug("%s v%s v%s" % (self.prefix, self.vA, self.vB))
def execute(self, memory, v):
# account for junk left inside the registers
try:
v[self.vA] = len(v[self.vB])
except TypeError:
v[self.vA] = 0
return super().execute(memory, v)
class NewInstance(Instruction):
def fetch(self) -> None:
self.prefix = "NEW-INSTANCE"
match self.opcode:
case 0x22:
self.fmt = 0x112222
case _:
raise OpCodeNotFoundError(self.opcode)
def decode(self, fd) -> None:
super().decode(fd)
(self.vA, self.vB) = self.decode_args(fd)
def print_instruction(self):
log.debug("%s v%s" % (self.prefix, self.vA))
def execute(self, memory, v):
# TODO: parse TypeID vB
if "String" in memory.dex.type_ids[self.vB].type_name:
v[self.vA] = ""
else:
v[self.vA] = None
return super().execute(memory, v)
class Array(Instruction):
def fetch(self) -> None:
self.prefix = ""
match self.opcode:
case 0x23:
self.suffix = "NEW-ARRAY"
self.fmt = 0x123333
case 0x24:
self.suffix = "FILLED-NEW-ARRAY"
self.fmt = 0x1233334567
case 0x25:
self.suffix = "FILLED-NEW-ARRAY/RANGE"
self.fmt = 0x1122223333
case 0x26:
self.suffix = "FILL-ARRAY-DATA"
self.fmt = 0x11AAAAAAAA
case _:
raise OpCodeNotFoundError(self.opcode)
def decode(self, fd) -> None:
super().decode(fd)
match self.opcode:
case 0x23:
(self.vA, self.vB, self.vC) = self.decode_args(fd)
case 0x24:
(self.vA, self.vB, self.vC, self.vD, self.vE, self.vF, self.vG) = self.decode_args(fd)
case 0x25:
(self.vA, self.vB, self.vC) = self.decode_args(fd)
case 0x26:
(self.vA, self.vB) = self.decode_args(fd)
def print_instruction(self):
try:
log.debug("%s v%s v%s @%s" % (self.suffix, self.vA, self.vB, hex(self.vC)))
except AttributeError:
log.debug("%s v%s @%s" % (self.suffix, self.vA, self.vB))
def execute(self, memory, v):
match self.opcode:
case 0x23:
new_arr: list = []
# account for junk in the size register
try:
for i in range(v[self.vB]):
new_arr.append(0)
except:
new_arr = []
v[self.vA] = new_arr
case 0x24:
# TODO: implement
pass
case 0x25:
# TODO: implement
pass
case 0x26:
# skip array pseudo-instruction header (03 00), we don't need it
memory.fd.seek(self.address + self.vB * 2 + 2)
(element_width, element_num) = self.decode_args_by_format(0x111122222222, memory.fd)
for i in range(element_num):
v[self.vA][i] = b2i(memory.fd.read(element_width))
# restore PC, skipping over the read instruction data
memory.fd.seek(self.address + 6)
return super().execute(memory, v)
class Throw(Instruction):
def print_instruction(self):
log.debug("THROW v%s" % self.vA)
def fetch(self) -> None:
self.fmt = 0x11
def decode(self, fd) -> None:
super().decode(fd)
self.vA = self.decode_args(fd)
def execute(self, memory, v):
return super().execute(memory, v)
class Goto(Instruction):
def fetch(self) -> None:
self.prefix = "GOTO"
match self.opcode:
case 0x28:
self.fmt = 0xAA
case 0x29:
self.suffix = "/16"
self.fmt = 0xAAAA
case 0x2a:
self.suffix = "/32"
self.fmt = 0xAAAAAAAA
case _:
raise OpCodeNotFoundError(self.opcode)
def decode(self, fd) -> None:
super().decode(fd)
# hack for aligning /16 and /32 constants
if self.opcode in [0x29, 0x2a]:
fd.read(1)
self.vA = self.decode_args(fd)
def print_instruction(self):
log.debug("%s%s @%s" % (self.prefix, self.suffix, hex(self.vA)))
def execute(self, memory, v):
return InstructionReturn(self.address + self.vA * 2, False, [])
class Switch(Instruction):
def print_instruction(self) -> None:
log.debug("SWITCH v%s @%s" % (self.vA, self.vB))
def fetch(self) -> None:
self.fmt = 0x11AAAAAAAA
def decode(self, fd) -> None:
super().decode(fd)
(self.vA, self.vB) = self.decode_args(fd)
self.switch_table = {}
# read packed switch data
old_fd_index = fd.tell()
fd.seek(old_fd_index + self.vB * 2 - 6)
fake_opcode = fd.read(2)
nr_elements = b2i(fd.read(2))
if self.opcode == 0x2b:
element_base = twos_complement(b2i(fd.read(4)), 4)
for i in range(0, nr_elements):
self.switch_table[element_base + i] = twos_complement(b2i(fd.read(4)), 4)
if self.opcode == 0x2c:
for i in range(0, nr_elements):
self.switch_table[twos_complement(b2i(fd.read(4)), 4)] = 0
for key in self.switch_table.keys():
self.switch_table[key] = twos_complement(b2i(fd.read(4)), 4)
fd.seek(old_fd_index)
def execute(self, memory, v):
found_switch_branch = False
for value, offset in self.switch_table.items():
if v[self.vA] == value:
ret = self.address + offset * 2
found_switch_branch = True
if not found_switch_branch:
return super().execute(memory, v)
else:
return InstructionReturn(ret, False, [])
class Cmp(Instruction):
def print_instruction(self):
log.debug("CMP v%s v%s v%s" % (self.vA, self.vB, self.vC))
def fetch(self) -> None:
self.fmt = 0x112233
def decode(self, fd) -> None:
super().decode(fd)
(self.vA, self.vB, self.vC) = self.decode_args(fd)
def execute(self, memory, v):
a: int = 0
b: int = 0
c: int = 0
if self.opcode >= 0x2f:
a = (v[self.vB] << 32) + v[self.vB + 1]
b = (v[self.vC] << 32) + v[self.vC + 1]
else:
a = v[self.vB]
b = v[self.vC]
if not a or not b:
match self.opcode:
case 0x2d:
c = -1
case 0x2e:
c = 1
case 0x2f:
c = -1
case 0x30:
c = 1
else:
if a > b:
c = 1
elif a < b:
c = -1
else:
c = 0
v[self.vA] = c
return super().execute(memory, v)
IF_LOOKUP = {0x32: "EQ", 0x33: "NE", 0x34: "LT", 0x35: "GE", 0x36: "GT", 0x37: "LE"}
IFZ_LOOKUP = {0x38: "EQZ", 0x39: "NEZ", 0x3a: "LTZ", 0x3b: "GEZ", 0x3c: "GTZ", 0x3d: "LEZ"}
class If(Instruction):
def fetch(self) -> None:
self.prefix = "IF"
match self.opcode:
case 0x32 | 0x33 | 0x34 | 0x35 | 0x36 | 0x37:
self.suffix = IF_LOOKUP[self.opcode]
self.fmt = 0x12AAAA
case _:
raise OpCodeNotFoundError(self.opcode)
def decode(self, fd) -> None:
super().decode(fd)
(self.vA, self.vB, self.vC) = self.decode_args(fd)
def print_instruction(self):
log.debug("%s-%s v%s v%s @%s" % (self.prefix, self.suffix, self.vA, self.vB, hex(self.vC)))
def execute(self, memory, v):
if v[self.vA] is None or v[self.vB] is None:
return super().execute(memory, v)
match self.opcode:
case 0x32:
if v[self.vA] == v[self.vB]:
ret = self.address + self.vC * 2
else:
return super().execute(memory, v)
case 0x33:
if v[self.vA] != v[self.vB]:
ret = self.address + self.vC * 2
else:
return super().execute(memory, v)
case 0x34:
if v[self.vA] < v[self.vB]:
ret = self.address + self.vC * 2
else:
return super().execute(memory, v)
case 0x35:
if v[self.vA] >= v[self.vB]:
ret = self.address + self.vC * 2
else:
return super().execute(memory, v)
case 0x36:
if v[self.vA] > v[self.vB]:
ret = self.address + self.vC * 2
else:
return super().execute(memory, v)
case 0x37:
if v[self.vA] <= v[self.vB]:
ret = self.address + self.vC * 2
else:
return super().execute(memory, v)
return InstructionReturn(ret, False, [])
class IfZ(Instruction):
def fetch(self) -> None:
self.prefix = "IF"
match self.opcode:
case 0x38 | 0x39 | 0x3a | 0x3b | 0x3c | 0x3d:
self.suffix = IFZ_LOOKUP[self.opcode]
self.fmt = 0x11AAAA
case _:
raise OpCodeNotFoundError(self.opcode)
def decode(self, fd) -> None:
super().decode(fd)
(self.vA, self.vB) = self.decode_args(fd)
def print_instruction(self):
log.debug("%s-%s v%s @%s" % (self.prefix, self.suffix, self.vA, hex(self.vB)))
def execute(self, memory, v):
# always skip execution for None; is it wise? time will tell :/
if v[self.vA] is None:
return super().execute(memory, v)
return
match self.opcode:
case 0x38:
if v[self.vA] == 0:
ret = self.address + self.vB * 2
else:
return super().execute(memory, v)
case 0x39:
if v[self.vA] != 0:
ret = self.address + self.vB * 2
else:
return super().execute(memory, v)
case 0x3a:
if v[self.vA] < 0:
ret = self.address + self.vB * 2
else:
return super().execute(memory, v)
case 0x3b:
if v[self.vA] >= 0:
ret = self.address + self.vB * 2
else:
return super().execute(memory, v)
case 0x3c:
if v[self.vA] > 0:
ret = self.address + self.vB * 2
else:
return super().execute(memory, v)
case 0x3d:
if v[self.vA] <= 0:
ret = self.address + self.vB * 2
else:
return super().execute(memory, v)
return InstructionReturn(ret, False, [])
AOP_LOOKUP = {0x44: "INT", 0x45: "WIDE", 0x46: "OBJECT", 0x47: "BOOLEAN", 0x48: "BYTE", 0x49: "CHAR", 0x4a: "SHORT",
0x4b: "INT", 0x4c: "WIDE", 0x4d: "OBJECT", 0x4e: "BOOLEAN", 0x4f: "BYTE", 0x50: "CHAR", 0x51: "SHORT"}
class ArrayOp(Instruction):
def fetch(self) -> None:
self.fmt = 0x112233
if 0x44 <= self.opcode <= 0x4a:
self.prefix = "AGET"
elif 0x4b <= self.opcode <= 0x51:
self.prefix = "APUT"
else:
raise OpCodeNotFoundError(self.opcode)
self.suffix = AOP_LOOKUP[self.opcode]
def decode(self, fd) -> None:
super().decode(fd)
(self.vA, self.vB, self.vC) = self.decode_args(fd)
def print_instruction(self):
log.debug("%s-%s v%s v%s @v%s" % (self.prefix, self.suffix, self.vA, self.vB, self.vC))
def execute(self, memory, v):
if 0x44 <= self.opcode <= 0x4a:
try:
v[self.vA] = v[self.vB][v[self.vC]]
except TypeError as te:
v[self.vA] = None
elif 0x4b <= self.opcode <= 0x51:
v[self.vB][v[self.vC]] = v[self.vA]
return super().execute(memory, v)
class IOp(Instruction):
def print_instruction(self):
log.debug("%s-%s v%s v%s @%s" % (self.prefix, self.suffix, self.vA, self.vB, self.vC))
def fetch(self) -> None:
self.fmt = 0x123333
def decode(self, fd) -> None:
super().decode(fd)
self.suffix = "???"
if 0x52 <= self.opcode <= 0x58:
self.prefix = "IGET"
elif 0x59 <= self.opcode <= 0x5f:
self.prefix = "IPUT"
else:
raise OpCodeNotFoundError(self.opcode)
(self.vA, self.vB, self.vC) = self.decode_args(fd)
def execute(self, memory, v):
if self.vC == 4418:
pass
# TODO: handle wide cornercase
if 0x52 <= self.opcode <= 0x58:
v[self.vA] = memory.instance_fields.get(self.vC, 0)
# wide cornercase
if self.opcode == 0x53:
v[self.vA + 1] = v[self.vA] & 0xFFFFFFFF
v[self.vA] = v[self.vA] >> 32
elif 0x59 <= self.opcode <= 0x5f:
memory.instance_fields[self.vC] = v[self.vA]
# wide cornercase
if self.opcode == 0x5a:
memory.instance_fields[self.vC] <<= 32
memory.instance_fields[self.vC] += v[self.vA + 1]
return super().execute(memory, v)
class SGet(Instruction):
def print_instruction(self):
log.debug("%s-%s v%s @v%s" % (self.prefix, self.suffix, self.vA, self.vB))
def fetch(self) -> None:
self.fmt = 0x112222
def decode(self, fd) -> None:
super().decode(fd)
self.prefix = "SGET"
self.suffix = "???"
(self.vA, self.vB) = self.decode_args(fd)
def execute(self, memory, v):
v[self.vA] = memory.static_fields.get(self.vB, None)
if self.opcode == 0x61:
# wide cornercase
try:
v[self.vA + 1] = v[self.vA] & 0xFFFFFFFF
v[self.vA] = v[self.vA] >> 32
except TypeError:
# reset the registers in case of junk
v[self.vA + 1] = 0
v[self.vA] = 0
return super().execute(memory, v)
class SPut(Instruction):
def print_instruction(self):
log.debug("%s-%s v%s @v%s" % (self.prefix, self.suffix, self.vA, self.vB))
def fetch(self) -> None:
self.fmt = 0x112222
def decode(self, fd) -> None:
super().decode(fd)
self.prefix = "SPUT"
self.suffix = "???"
(self.vA, self.vB) = self.decode_args(fd)
def execute(self, memory, v):
memory.static_fields[self.vB] = v[self.vA]
# wide cornercase
if self.opcode == 0x68:
try:
memory.static_fields[self.vB] <<= 32
memory.static_fields[self.vB] += v[self.vA + 1]
except TypeError:
# reset the static field in case of junk left inside the register
memory.static_fields[self.vB] = 0
return super().execute(memory, v)
INVOKE_LOOKUP = {0x6e: "VIRTUAL", 0x6f: "SUPER", 0x70: "DIRECT", 0x71: "STATIC", 0x72: "INTERFACE"}
class InvokeKind(Instruction):
def fetch(self) -> None:
self.prefix = "INVOKE"
self.fmt = 0x1233334567
self.suffix = INVOKE_LOOKUP[self.opcode]
if not (0x6e <= self.opcode <= 0x72):
raise OpCodeNotFoundError(self.opcode)
def decode(self, fd) -> None:
super().decode(fd)
(self.vE, self.vX, self.vZ, self.vA, self.vB, self.vC, self.vD) = self.decode_args(fd)
def print_instruction(self):
args = [self.vA, self.vB, self.vC, self.vD, self.vE]
log.debug(("%s-%s args_nr:%s method@%s " + ("v%s") * self.vX) %
((self.prefix, self.suffix, self.vX, self.vZ) + tuple(args[0: self.vX])))
def execute(self, memory, v):
args_arr = [self.vA, self.vB, self.vC, self.vD, self.vE]
# don't send more arguments than we've got
# TODO: do another bugfixing round
# TODO: FIX NEEDS_MORE_WORK
needs_more_work = True
# try:
# needs_more_work = frame.translate_api(self.vZ, args_arr[:self.vX])
# except Exception as ex:
# needs_more_work = False
# log.error("Translation API error when calling: %s\n" % traceback.format_exc())
# log.error("Registers content: ")
# frame.print_registers()
params = [self.vA, self.vB, self.vC, self.vD, self.vE]
params = params[0:self.vX]
if needs_more_work:
return InstructionReturn(self.vZ, True, params)
else:
return super().execute(memory, v)
class InvokeKindRange(Instruction):
def fetch(self) -> None:
self.prefix = "INVOKE-RANGE"
self.fmt = 0x1122223333
self.suffix = INVOKE_LOOKUP[self.opcode - 0x6]
def decode(self, fd) -> None:
super().decode(fd)
(self.vA, self.vB, self.vC) = self.decode_args(fd)
def print_instruction(self):
log.debug("%s-%s args_nr:%s method@%s v%s" % (self.prefix, self.suffix, self.vA, self.vB, self.vC))
def execute(self, memory, v):
params = [x for x in range(self.vC, self.vC + self.vA)]
# TODO: FIX NEEDS_MORE_WORK
# needs_more_work = translate_api(self.vB, params)
needs_more_work = True
if needs_more_work:
return InstructionReturn(self.vB, True, params)
else:
return super().execute(memory, v)
class UnOp(Instruction):
def fetch(self) -> None:
self.fmt = 0x12
def decode(self, fd) -> None:
super().decode(fd)
(self.vA, self.vB) = self.decode_args(fd)
match self.opcode:
case 0x7b:
self.prefix = "NEG-INT"
case 0x7c:
self.prefix = "NOT-INT"
case 0x7d:
self.prefix = "NEG-LONG"
case 0x7e:
self.prefix = "NOT-LONG"
case 0x7f:
self.prefix = "NEG-FLOAT"
case 0x80:
self.prefix = "NEG-DOUBLE"
case 0x81:
self.prefix = "INT-TO-LONG"
case 0x82:
self.prefix = "INT-TO-FLOAT"
case 0x83:
self.prefix = "INT-TO-DOUBLE"
case 0x84:
self.prefix = "LONG-TO-INT"
case 0x85:
self.prefix = "LONG-TO-FLOAT"
case 0x86:
self.prefix = "LONG-TO-DOUBLE"
case 0x87:
self.prefix = "FLOAT-TO-INT"
case 0x88:
self.prefix = "FLOAT-TO-LONG"
case 0x89:
self.prefix = "FLOAT-TO-DOUBLE"
case 0x8a:
self.prefix = "DOUBLE-TO-INT"
case 0x8b:
self.prefix = "DOUBLE-TO-LONG"
case 0x8c:
self.prefix = "DOUBLE-TO-FLOAT"
case 0x8d:
self.prefix = "INT-TO-BYTE"
case 0x8e:
self.prefix = "INT-TO-CHAR"
case 0x8f:
self.prefix = "INT-TO-SHORT"
def print_instruction(self):
log.debug("%s v%s v%s" % (self.prefix, self.vA, self.vB))
def execute(self, memory, v):
match self.opcode:
case 0x7b | 0x7f:
try:
v[self.vA] = -v[self.vB]
except TypeError:
# account for junk inside registers
v[self.vA] = 0
case 0x7c | 0x7e:
# TODO: check Android source code
v[self.vA] = ~v[self.vB]
case 0x7d | 0x80:
tmp1 = -v[self.vB]
tmp2 = -v[self.vB + 1]
v[self.vA] = tmp1
v[self.vA + 1] = tmp2
case 0x82 | 0x86 | 0x87 | 0x8b:
pass # no need to trim/exted datatype
case 0x81 | 0x83 | 0x88 | 0x89:
tmp1 = 0x00000000