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#!/usr/bin/env python3
# (barebones) utility to generate tests and search encodings and mnemonics
# TODO: proper command line argument parsing, and help
import re, sys, codecs
N_SAMPLES = 8 # number of samples for each encoding
from arm64test import lift
if not sys.argv[1:]:
sys.exit(-1)
arch = None
def disassemble(addr, data):
global arch
if not arch:
arch = binaryninja.Architecture["aarch64"]
(tokens, length) = arch.get_instruction_text(data, addr)
if not tokens or length == 0:
return None
return disasm_test.normalize("".join([x.text for x in tokens]))
def print_case(data, comment=""):
ilstr, attributes = lift(data)
il_lines = ilstr.split(";")
print("\t(b'%s', " % ("".join(["\\x%02X" % b for b in data])), end="")
for i, line in enumerate(il_lines):
if i != 0:
print("\t\t\t\t\t\t ", end="")
print("'%s" % line, end="")
if i != len(il_lines) - 1:
print(";' + \\")
comment = " # " + comment if comment else ""
print("'),%s" % comment)
def gather_samples(mnems, encodings):
encodings = [x.upper() for x in encodings]
global N_SAMPLES
fpath = "./disassembler/test_cases.txt"
with open(fpath) as fp:
lines = fp.readlines()
mnems = [re.compile(x, re.IGNORECASE) for x in mnems]
samples = 0
current_encoding = None
for line in lines:
if line.startswith("// NOTE:"):
continue
if line.startswith("// SYNTAX:"):
continue
if line.startswith("// https:"):
continue
if line.startswith(
"// 1101010100|L=0|OP0=00|OP1=011|CRN=0011|CRM=0100|1|OPC=00|RT=11111"
):
continue
if line.strip().endswith("// TCOMMIT"):
continue
if line.strip().endswith("// DRPS"):
continue
if line.strip().endswith("// ERET"):
continue
if line.strip().endswith("// ERETAA"):
continue
if line.strip().endswith("// ERETAB"):
continue
if line.strip().endswith("// PSSBB"):
continue
if line.strip().endswith("// SSBB"):
continue
if line.strip().endswith("// PSSBB_DSB_BO_BARRIERS"):
continue
if re.match(r"^// .*? .*", line):
m = re.match(r"^// (.*?) .*", line)
# example:
# // BFCVT_Z_P_Z_S2BF 01100101|opc=10|0010|opc2=10|101|Pg=xxx|Zn=xxxxx|Zd=xxxxx
current_encoding = m.group(1)
samples = 0
continue
m = re.match(r"^(..)(..)(..)(..) (.*)$", line)
if m:
# example:
# 658AB9BB bfcvt z27.h, p6/m, z13.s
if samples >= N_SAMPLES:
continue
(b0, b1, b2, b3, instxt) = m.group(1, 2, 3, 4, 5)
data = codecs.decode(b3 + b2 + b1 + b0, "hex_codec")
# if not (instxt==mnem or instxt.startswith(mnem+' ')):
# mnemonic_match = [x for x in mnems if instxt.lower().startswith(x.lower()) or current_encoding.lower().startswith(x.lower())]
mnemonic_match = [
x for x in mnems if x.search(instxt) or x.search(current_encoding)
]
encoding_match = current_encoding.upper() in encodings
if not (mnemonic_match or encoding_match):
continue
# if samples == 0:
# print('\t# %s' % encoding)
print("\t# %s %s" % (instxt.ljust(64), current_encoding))
print_case(data)
samples += 1
continue
print("unable to parse line: %r" % line)
sys.exit(-1)
# generate lifting tests for a given mnemonic
# example:
# ./test_gen mnemonic ld1
# regex matching (ignoring case) for mnemonics
if sys.argv[1] == "mnemonic":
mnems = sys.argv[2:]
for mnem in mnems:
print("searching for mnemonic -%s-" % mnem)
gather_samples([mnem], [])
# exact match (ignoring case) for encodings
elif sys.argv[1] == "encoding":
encnames = sys.argv[2:]
for encname in encnames:
print("searching for encoding -%s-" % encname)
gather_samples([], [encname])
elif sys.argv[1] == "mte":
mnems = [
"addg",
"cmpp",
"gmi",
"irg",
"ldg",
"dgv",
"ldgm",
"st2g",
"stg",
"stgm",
"stgp",
"stgv",
"stz2g",
"stzg",
"stzgm",
"subg",
"subp",
"subps",
]
gather_samples(mnems, [])
elif sys.argv[1] == "recompute_arm64test":
with open("arm64test.py") as fp:
lines = [x.rstrip() for x in fp.readlines()]
i = 0
while i < len(lines):
m = re.match(r"^\t\(b\'\\x(..)\\x(..)\\x(..)\\x(..)\'.*$", lines[i])
if not m:
print(lines[i])
i += 1
continue
(b0, b1, b2, b3) = m.group(1, 2, 3, 4)
comment = None
m = re.search(r"# (.*)$", lines[i])
if m:
comment = m.group(1)
data = codecs.decode(b0 + b1 + b2 + b3, "hex_codec")
print_case(data, comment)
i += 1
while lines[i].startswith("\t\t\t\t\t\t"):
i += 1
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