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#!/usr/bin/python
# Test tool to compare Capstone output with llvm-mc. By Nguyen Anh Quynh, 2014
import array, os.path, sys
from subprocess import Popen, PIPE, STDOUT
from capstone import *
# convert all hex numbers to decimal numbers in a text
def normalize_hex(a):
while(True):
i = a.find('0x')
if i == -1: # no more hex number
break
hexnum = '0x'
for c in a[i + 2:]:
if c in '0123456789abcdefABCDEF':
hexnum += c
else:
break
num = int(hexnum, 16)
a = a.replace(hexnum, str(num))
return a
def run_mc(arch, hexcode, option, syntax=None):
def normalize(text):
# remove tabs
text = text.lower()
items = text.split()
text = ' '.join(items)
if arch == CS_ARCH_X86:
# remove comment after #
i = text.find('# ')
if i != -1:
return text[:i].strip()
if arch == CS_ARCH_ARM64:
# remove comment after #
i = text.find('// ')
if i != -1:
return text[:i].strip()
# remove some redundant spaces
text = text.replace('{ ', '{')
text = text.replace(' }', '}')
return text.strip()
#print("Trying to decode: %s" %hexcode)
if syntax:
if arch == CS_ARCH_MIPS:
p = Popen(['llvm-mc', '-disassemble', '-print-imm-hex', '-mattr=+msa', syntax] + option, stdout=PIPE, stdin=PIPE, stderr=STDOUT)
else:
p = Popen(['llvm-mc', '-disassemble', '-print-imm-hex', syntax] + option, stdout=PIPE, stdin=PIPE, stderr=STDOUT)
else:
if arch == CS_ARCH_MIPS:
p = Popen(['llvm-mc', '-disassemble', '-print-imm-hex', '-mattr=+msa'] + option, stdout=PIPE, stdin=PIPE, stderr=STDOUT)
else:
p = Popen(['llvm-mc', '-disassemble', '-print-imm-hex'] + option, stdout=PIPE, stdin=PIPE, stderr=STDOUT)
output = p.communicate(input=hexcode)[0]
lines = output.split('\n')
#print lines
if 'invalid' in lines[0]:
#print 'invalid ----'
return 'FAILED to disassemble (MC)'
else:
#print 'OK:', lines[1]
return normalize(lines[1].strip())
def test_file(fname):
print("Test %s" %fname);
f = open(fname)
lines = f.readlines()
f.close()
if not lines[0].startswith('# '):
print("ERROR: decoding information is missing")
return
# skip '# ' at the front, then split line to get out hexcode
# Note: option can be '', or 'None'
#print lines[0]
#print lines[0][2:].split(', ')
(arch, mode, option) = lines[0][2:].split(', ')
mode = mode.replace(' ', '')
option = option.strip()
archs = {
"CS_ARCH_ARM": CS_ARCH_ARM,
"CS_ARCH_ARM64": CS_ARCH_ARM64,
"CS_ARCH_MIPS": CS_ARCH_MIPS,
"CS_ARCH_PPC": CS_ARCH_PPC,
"CS_ARCH_SPARC": CS_ARCH_SPARC,
"CS_ARCH_SYSZ": CS_ARCH_SYSZ,
"CS_ARCH_X86": CS_ARCH_X86,
"CS_ARCH_XCORE": CS_ARCH_XCORE,
"CS_ARCH_RISCV": CS_ARCH_RISCV
# "CS_ARCH_M68K": CS_ARCH_M68K,
}
modes = {
"CS_MODE_16": CS_MODE_16,
"CS_MODE_32": CS_MODE_32,
"CS_MODE_64": CS_MODE_64,
"CS_MODE_MIPS32": CS_MODE_MIPS32,
"CS_MODE_MIPS64": CS_MODE_MIPS64,
"0": CS_MODE_ARM,
"CS_MODE_ARM": CS_MODE_ARM,
"CS_MODE_THUMB": CS_MODE_THUMB,
"CS_MODE_ARM+CS_MODE_V8": CS_MODE_ARM+CS_MODE_V8,
"CS_MODE_THUMB+CS_MODE_V8": CS_MODE_THUMB+CS_MODE_V8,
"CS_MODE_THUMB+CS_MODE_MCLASS": CS_MODE_THUMB+CS_MODE_MCLASS,
"CS_MODE_LITTLE_ENDIAN": CS_MODE_LITTLE_ENDIAN,
"CS_MODE_BIG_ENDIAN": CS_MODE_BIG_ENDIAN,
"CS_MODE_64+CS_MODE_LITTLE_ENDIAN": CS_MODE_64+CS_MODE_LITTLE_ENDIAN,
"CS_MODE_64+CS_MODE_BIG_ENDIAN": CS_MODE_64+CS_MODE_BIG_ENDIAN,
"CS_MODE_MIPS32+CS_MODE_MICRO": CS_MODE_MIPS32+CS_MODE_MICRO,
"CS_MODE_MIPS32+CS_MODE_MICRO+CS_MODE_BIG_ENDIAN": CS_MODE_MIPS32+CS_MODE_MICRO+CS_MODE_BIG_ENDIAN,
"CS_MODE_MIPS32+CS_MODE_BIG_ENDIAN+CS_MODE_MICRO": CS_MODE_MIPS32+CS_MODE_MICRO+CS_MODE_BIG_ENDIAN,
"CS_MODE_BIG_ENDIAN+CS_MODE_V9": CS_MODE_BIG_ENDIAN + CS_MODE_V9,
"CS_MODE_MIPS32+CS_MODE_BIG_ENDIAN": CS_MODE_MIPS32+CS_MODE_BIG_ENDIAN,
"CS_MODE_MIPS32+CS_MODE_LITTLE_ENDIAN": CS_MODE_MIPS32+CS_MODE_LITTLE_ENDIAN,
"CS_MODE_MIPS64+CS_MODE_LITTLE_ENDIAN": CS_MODE_MIPS64+CS_MODE_LITTLE_ENDIAN,
"CS_MODE_MIPS64+CS_MODE_BIG_ENDIAN": CS_MODE_MIPS64+CS_MODE_BIG_ENDIAN,
"CS_MODE_RISCV32": CS_MODE_RISCV32,
"CS_MODE_RISCV64": CS_MODE_RISCV64,
}
options = {
"CS_OPT_SYNTAX_ATT": CS_OPT_SYNTAX_ATT,
"CS_OPT_SYNTAX_NOREGNAME": CS_OPT_SYNTAX_NOREGNAME,
}
mc_modes = {
("CS_ARCH_X86", "CS_MODE_32"): ['-triple=i386'],
("CS_ARCH_X86", "CS_MODE_64"): ['-triple=x86_64'],
("CS_ARCH_ARM", "CS_MODE_ARM"): ['-triple=armv7'],
("CS_ARCH_ARM", "CS_MODE_THUMB"): ['-triple=thumbv7'],
("CS_ARCH_ARM", "CS_MODE_ARM+CS_MODE_V8"): ['-triple=armv8'],
("CS_ARCH_ARM", "CS_MODE_THUMB+CS_MODE_V8"): ['-triple=thumbv8'],
("CS_ARCH_ARM", "CS_MODE_THUMB+CS_MODE_MCLASS"): ['-triple=thumbv7m'],
("CS_ARCH_ARM64", "0"): ['-triple=aarch64'],
("CS_ARCH_MIPS", "CS_MODE_MIPS32+CS_MODE_BIG_ENDIAN"): ['-triple=mips'],
("CS_ARCH_MIPS", "CS_MODE_MIPS32+CS_MODE_MICRO"): ['-triple=mipsel', '-mattr=+micromips'],
("CS_ARCH_MIPS", "CS_MODE_MIPS64"): ['-triple=mips64el'],
("CS_ARCH_MIPS", "CS_MODE_MIPS32"): ['-triple=mipsel'],
("CS_ARCH_MIPS", "CS_MODE_MIPS64+CS_MODE_BIG_ENDIAN"): ['-triple=mips64'],
("CS_ARCH_MIPS", "CS_MODE_MIPS32+CS_MODE_MICRO+CS_MODE_BIG_ENDIAN"): ['-triple=mips', '-mattr=+micromips'],
("CS_ARCH_MIPS", "CS_MODE_MIPS32+CS_MODE_BIG_ENDIAN+CS_MODE_MICRO"): ['-triple=mips', '-mattr=+micromips'],
("CS_ARCH_PPC", "CS_MODE_BIG_ENDIAN"): ['-triple=powerpc64'],
('CS_ARCH_SPARC', 'CS_MODE_BIG_ENDIAN'): ['-triple=sparc'],
('CS_ARCH_SPARC', 'CS_MODE_BIG_ENDIAN+CS_MODE_V9'): ['-triple=sparcv9'],
('CS_ARCH_SYSZ', '0'): ['-triple=s390x', '-mcpu=z196'],
('CS_ARCH_RISCV', 'CS_MODE_RISCV32'): ['-triple=riscv32'],
('CS_ARCH_RISCV', 'CS_MODE_RISCV64'): ['-triple=riscv64'],
}
#if not option in ('', 'None'):
# print archs[arch], modes[mode], options[option]
#print(arch, mode, option)
md = Cs(archs[arch], modes[mode])
mc_option = None
if arch == 'CS_ARCH_X86':
# tell llvm-mc to use Intel syntax
mc_option = '-output-asm-variant=1'
if arch == 'CS_ARCH_ARM' or arch == 'CS_ARCH_PPC' :
md.syntax = CS_OPT_SYNTAX_NOREGNAME
if fname.endswith('3DNow.s.cs'):
md.syntax = CS_OPT_SYNTAX_ATT
for line in lines[1:]:
# ignore all the input lines having # in front.
if line.startswith('#'):
continue
#print("Check %s" %line)
code = line.split(' = ')[0]
asm = ''.join(line.split(' = ')[1:])
hex_code = code.replace('0x', '')
hex_code = hex_code.replace(',', '')
hex_data = hex_code.decode('hex')
#hex_bytes = array.array('B', hex_data)
x = list(md.disasm(hex_data, 0))
if len(x) > 0:
if x[0].op_str != '':
cs_output = "%s %s" %(x[0].mnemonic, x[0].op_str)
else:
cs_output = x[0].mnemonic
else:
cs_output = 'FAILED to disassemble'
cs_output2 = normalize_hex(cs_output)
cs_output2 = cs_output2.replace(' ', '')
if arch == 'CS_ARCH_MIPS':
# normalize register alias names
cs_output2 = cs_output2.replace('$at', '$1')
cs_output2 = cs_output2.replace('$v0', '$2')
cs_output2 = cs_output2.replace('$v1', '$3')
cs_output2 = cs_output2.replace('$a0', '$4')
cs_output2 = cs_output2.replace('$a1', '$5')
cs_output2 = cs_output2.replace('$a2', '$6')
cs_output2 = cs_output2.replace('$a3', '$7')
cs_output2 = cs_output2.replace('$t0', '$8')
cs_output2 = cs_output2.replace('$t1', '$9')
cs_output2 = cs_output2.replace('$t2', '$10')
cs_output2 = cs_output2.replace('$t3', '$11')
cs_output2 = cs_output2.replace('$t4', '$12')
cs_output2 = cs_output2.replace('$t5', '$13')
cs_output2 = cs_output2.replace('$t6', '$14')
cs_output2 = cs_output2.replace('$t7', '$15')
cs_output2 = cs_output2.replace('$t8', '$24')
cs_output2 = cs_output2.replace('$t9', '$25')
cs_output2 = cs_output2.replace('$s0', '$16')
cs_output2 = cs_output2.replace('$s1', '$17')
cs_output2 = cs_output2.replace('$s2', '$18')
cs_output2 = cs_output2.replace('$s3', '$19')
cs_output2 = cs_output2.replace('$s4', '$20')
cs_output2 = cs_output2.replace('$s5', '$21')
cs_output2 = cs_output2.replace('$s6', '$22')
cs_output2 = cs_output2.replace('$s7', '$23')
cs_output2 = cs_output2.replace('$k0', '$26')
cs_output2 = cs_output2.replace('$k1', '$27')
#print("Running MC ...")
if fname.endswith('thumb-fp-armv8.s.cs'):
mc_output = run_mc(archs[arch], code, ['-triple=thumbv8'], mc_option)
elif fname.endswith('mips64-alu-instructions.s.cs'):
mc_output = run_mc(archs[arch], code, ['-triple=mips64el', '-mcpu=mips64r2'], mc_option)
else:
mc_output = run_mc(archs[arch], code, mc_modes[(arch, mode)], mc_option)
mc_output2 = normalize_hex(mc_output)
if arch == 'CS_ARCH_MIPS':
mc_output2 = mc_output2.replace(' 0(', '(')
if arch == 'CS_ARCH_PPC':
mc_output2 = mc_output2.replace('.+', '')
mc_output2 = mc_output2.replace('.', '')
mc_output2 = mc_output2.replace(' 0(', '(')
mc_output2 = mc_output2.replace(' ', '')
mc_output2 = mc_output2.replace('opaque', '')
if (cs_output2 != mc_output2):
asm = asm.replace(' ', '').strip().lower()
if asm != cs_output2:
print("Mismatch: %s" %line.strip())
print("\tMC = %s" %mc_output)
print("\tCS = %s" %cs_output)
if __name__ == '__main__':
if len(sys.argv) == 1:
fnames = sys.stdin.readlines()
for fname in fnames:
test_file(fname.strip())
else:
#print("Usage: ./test_mc.py <input-file.s.cs>")
test_file(sys.argv[1])
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