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#!/usr/bin/python
# convert LLVM GenInstrInfo.inc for Capstone disassembler.
# by Nguyen Anh Quynh, 2019
import sys
if len(sys.argv) == 1:
print("Syntax: %s <GenInstrInfo.inc> <arch>" %sys.argv[0])
sys.exit(1)
# lib/Target/X86/X86GenAsmMatcher.inc
# static const MatchEntry MatchTable1[] = {
# { 0 /* aaa */, X86::AAA, Convert_NoOperands, Feature_Not64BitMode, { }, },
# return (arch, mnem)
def extract_insn(line):
tmp = line.split(',')
insn_raw = tmp[1].strip()
insn_mnem = tmp[0].split(' ')[3]
# X86 mov.s
if '.' in insn_mnem:
tmp = insn_mnem.split('.')
insn_mnem = tmp[0]
tmp = insn_raw.split('::')
arch = tmp[0]
# AArch64 -> ARM64
if arch.upper() == 'AArch64':
arch = 'ARM64'
return (arch, insn_mnem)
# get (arch, first insn) from MatchTable
def get_first_insn(filename):
f = open(filename)
lines = f.readlines()
f.close()
count = 0
for line in lines:
line = line.strip()
if len(line) == 0:
continue
# Intel syntax in Table1
if 'MatchEntry MatchTable1[] = {' in line:
count += 1
#print(line.strip())
continue
if count == 1:
arch, mnem = extract_insn(line)
return (arch, mnem)
return (None, None)
#arch, first_insn = get_first_insn(sys.argv[2])
#first_insn = first_insn.upper()
#print(arch, first_insn)
arch = sys.argv[2].upper()
if arch.upper() == 'AARCH64':
arch = 'AArch64'
elif arch.upper() == 'ARM64':
arch = 'AArch64'
print("""
/* Capstone Disassembly Engine, http://www.capstone-engine.org */
/* By Nguyen Anh Quynh <aquynh@gmail.com>, 2013-2019 */
/*===- TableGen'erated file -------------------------------------*- C++ -*-===*\
|* *|
|* Target Instruction Enum Values and Descriptors *|
|* *|
|* Automatically generated file, do not edit! *|
|* *|
\*===----------------------------------------------------------------------===*/
#ifdef GET_INSTRINFO_ENUM
#undef GET_INSTRINFO_ENUM
""")
enum_count = 0
f = open(sys.argv[1])
lines = f.readlines()
f.close()
# 1st enum is register enum
for line in lines:
line = line.rstrip()
if len(line.strip()) == 0:
continue
if line.strip() == 'enum {':
enum_count += 1
print(line.strip())
continue
line = line.strip()
if enum_count == 1:
if line == '};':
# done with first enum
break
else:
# skip pseudo instructions
if '__' in line or 'setjmp' in line or 'longjmp' in line or 'Pseudo' in line:
pass
else:
print("\t%s_%s" %(arch, line))
print('};\n')
print("#endif // GET_INSTRINFO_ENUM")
if arch == 'ARM64':
sys.exit(0)
print("")
print("#ifdef GET_INSTRINFO_MC_DESC")
print("#undef GET_INSTRINFO_MC_DESC")
print("")
print("#define nullptr 0")
print("")
in_insts = False
for line in lines:
if line.strip() == '':
continue
line = line.rstrip()
if 'static const MCOperandInfo ' in line:
line2 = line.replace('::', '_')
print(line2)
elif 'Insts[] = {' in line:
# extern const MCInstrDesc ARMInsts[] = {
line2 = line.replace('extern const ', 'static const ')
print("")
print(line2)
in_insts = True
elif in_insts:
if line == '};':
print(line)
break
# { 0, 1, 1, 0, 0, 0|(1ULL<<MCID::Pseudo)|(1ULL<<MCID::Variadic), 0x0ULL, nullptr, nullptr, OperandInfo2, -1 ,nullptr }, // Inst #0 = PHI
# take 2nd & 10th entries
tmp = line.split(',')
print(" { %s, %s }," %(tmp[1].strip(), tmp[9].strip()))
print("")
print("#endif // GET_INSTRINFO_MC_DESC")
#static const MCInstrDesc ARMInsts[] = {
#static MCOperandInfo OperandInfo2[] = { { -1, 0, MCOI_OPERAND_IMMEDIATE, 0 }, };
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