def helper_all(binary, opc, size, wback, postIndex, offset, rtKey, rnKey,
scale, instr):
if (opc[0] == '0'):
if (opc[1] == '1'):
memOp = const.MEM_OP_LOAD
else:
memOp = const.MEM_OP_STORE
if (size == '11'):
regSize = 64
else:
regSize = 32
signed = False
else:
if (size == '11'):
memOp = const.MEM_OP_PREFETCH
else:
memOp = const.MEM_OP_LOAD
if opc[1] == '1':
regSize = 32
else:
regSize = 64
signed = True
dataSize = 8 << scale
'''wb_unknown = False
rt_unknown = False''' # commenting - assuming them to be false always
address = utilFunc.getRegValueByStringkey(binary[22:27], '1')
address = utilFunc.uInt(address)
if not (postIndex):
address = address + offset
if (memOp == const.MEM_OP_STORE):
data = utilFunc.getRegValueByStringkey(binary[27:32], '0')
utilFunc.storeToMemory(data, address, dataSize)
elif (memOp == const.MEM_OP_LOAD):
data = utilFunc.fetchFromMemory(address, dataSize)
if (data == const.TRAP):
utilFunc.finalize_simple(instr)
print "HEY!!! There seems to be a problem - memory location can not be accessed"
print "Moving ahead without executing the instruction"
return
if (signed):
data = utilFunc.signExtend(data, regSize)
else:
data = utilFunc.zeroExtend(data, regSize)
utilFunc.setRegValue(rtKey, data.zfill(64), '0')
if (wback):
if postIndex:
address = address + offset
address = utilFunc.intToBinary(address, 64)
utilFunc.setRegValue(rnKey, address, '1')
utilFunc.finalize_simple(instr)
def helper_all(binary, opc, size, wback, postIndex, offset, rtKey, rnKey, scale, instr):
if(opc[0] == '0'):
if(opc[1] == '1'):
memOp = const.MEM_OP_LOAD
else:
memOp = const.MEM_OP_STORE
if(size == '11'):
regSize = 64
else:
regSize = 32
signed = False
else:
if(size == '11'):
memOp = const.MEM_OP_PREFETCH
else:
memOp = const.MEM_OP_LOAD
if opc[1] == '1':
regSize = 32
else:
regSize = 64
signed = True
dataSize = 8 << scale
'''wb_unknown = False
rt_unknown = False''' # commenting - assuming them to be false always
address = utilFunc.getRegValueByStringkey(binary[22:27], '1')
address = utilFunc.uInt(address)
if not(postIndex):
address = address + offset
if(memOp == const.MEM_OP_STORE):
data = utilFunc.getRegValueByStringkey(binary[27:32], '0')
utilFunc.storeToMemory(data, address, dataSize)
elif(memOp == const.MEM_OP_LOAD):
data = utilFunc.fetchFromMemory(address, dataSize)
if(data == const.TRAP):
utilFunc.finalize_simple(instr)
print "HEY!!! There seems to be a problem - memory location can not be accessed"
print "Moving ahead without executing the instruction"
return
if(signed):
data = utilFunc.signExtend(data, regSize)
else:
data = utilFunc.zeroExtend(data, regSize)
utilFunc.setRegValue(rtKey, data.zfill(64), '0')
if(wback):
if postIndex:
address = address + offset
address = utilFunc.intToBinary(address, 64)
utilFunc.setRegValue(rnKey, address, '1')
utilFunc.finalize_simple(instr)
def execBL(binary):
inst = 'BL OFFSET('
imm26key = binary[-26:]
(instpart, offset) = utilFunc.getOffset(imm26key)
inst += instpart + ')'
nextAddr = armdebug.getPC() + 4
utilFunc.setRegValue(30, utilFunc.intToBinary(nextAddr, 64), '0')
utilFunc.branchWithOffset(offset)
utilFunc.finalize_simple(inst)
def execBL(binary):
inst='BL OFFSET('
imm26key=binary[-26:]
(instpart,offset)=utilFunc.getOffset(imm26key)
inst+=instpart+')'
nextAddr=armdebug.getPC()+4
utilFunc.setRegValue(30, utilFunc.intToBinary(nextAddr, 64), '0')
utilFunc.branchWithOffset(offset)
utilFunc.finalize_simple(inst)
def execADR(binary):
inst='ADR X'
rdKey=binary[-5:]
regnum=utilFunc.uInt(rdKey)
inst+=str(regnum)+', OFFSET('
immLo=binary[1:3]
immHi=binary[8:27]
imm=immHi+immLo
(inst_part,offset)=utilFunc.getOffsetWithoutTimes(imm)
inst+=inst_part+')'
nextAddr=utilFunc.PCwithOffset(offset)#as our PC implementation is wrong till now
utilFunc.setRegValue(regnum, utilFunc.intToBinary(nextAddr, 64), '0')
utilFunc.finalize_simple(inst)
def execBLR(binary):
inst='BLR X'
rnKey=binary[22:27]
address_binary=utilFunc.getRegValueByStringkey(rnKey, '0')
regnum=utilFunc.uInt(rnKey)
inst+=str(regnum)
hexstr = utilFunc.binaryToHexStr(address_binary)
if not armdebug.checkIfValidBreakPoint(hexstr):
utilFunc.finalize_simple('Instruction aborted. Invalid instruction address in register.')
return
nextAddr=armdebug.getPC()+4
utilFunc.setRegValue(30, utilFunc.intToBinary(nextAddr, 64), '0')
utilFunc.branchToAddress(int(hexstr,16))
utilFunc.finalize_simple(inst)
def execBLR(binary):
inst = 'BLR X'
rnKey = binary[22:27]
address_binary = utilFunc.getRegValueByStringkey(rnKey, '0')
regnum = utilFunc.uInt(rnKey)
inst += str(regnum)
hexstr = utilFunc.binaryToHexStr(address_binary)
if not armdebug.checkIfValidBreakPoint(hexstr):
utilFunc.finalize_simple(
'Instruction aborted. Invalid instruction address in register.')
return
nextAddr = armdebug.getPC() + 4
utilFunc.setRegValue(30, utilFunc.intToBinary(nextAddr, 64), '0')
utilFunc.branchToAddress(int(hexstr, 16))
utilFunc.finalize_simple(inst)
def helper_rp(wback, postIndex, binary, instr):
rtKey = utilFunc.getRegKeyByStringKey(binary[27:32])
rnKey = utilFunc.getRegKeyByStringKey(binary[22:27])
rt2Key = utilFunc.getRegKeyByStringKey(binary[17:22])
imm7 = binary[10:17]
l = binary[9]
opc = binary[0:2]
if (l == '1'):
memOp = const.MEM_OP_LOAD
else:
memOp = const.MEM_OP_STORE
signed = (opc[1] != '0')
scale = 2 + utilFunc.uInt(opc[0])
dataSize = 8 << scale
offset = utilFunc.lsl(utilFunc.signExtend(imm7, 64), scale)
offset = utilFunc.sInt(offset, 64)
dbytes = dataSize / 8
address = utilFunc.getRegValueByStringkey(binary[22:27], '1')
address = utilFunc.uInt(address)
if not (postIndex):
address = address + offset
type = binary[7:9]
if (opc == '00'):
r = 'w'
if (opc == '10'):
r = 'x'
if (type == '01'):
#Post-index
instr += " " + r + str(rtKey) + ", " + r + str(rt2Key) + ", [x" + str(
rnKey) + "], #" + str(offset)
if (type == '11'):
#Pre-index
instr += " " + r + str(rtKey) + ", " + r + str(rt2Key) + ", [x" + str(
rnKey) + ", #" + str(offset) + "]!"
if (type == '10'):
#Signed-offset
instr += " " + r + str(rtKey) + ", " + r + str(rt2Key) + ", [x" + str(
rnKey) + ", #" + str(offset) + "]"
if (memOp == const.MEM_OP_STORE):
data1 = utilFunc.getRegValueByStringkey(binary[27:32], '0')
data2 = utilFunc.getRegValueByStringkey(binary[17:22], '0')
utilFunc.storeToMemory(data1, address, dataSize)
utilFunc.storeToMemory(data2, address + dbytes, dataSize)
elif (memOp == const.MEM_OP_LOAD):
data1 = utilFunc.fetchFromMemory(address, dataSize)
data2 = utilFunc.fetchFromMemory(address + dbytes, dataSize)
if (data1 == const.TRAP or data2 == const.TRAP):
utilFunc.finalize_simple(instr)
print "HEY!!! There seems to be a problem - memory location can not be accessed"
print "Moving ahead without executing the instruction"
return
if (signed):
data1 = utilFunc.signExtend(data1, 64)
data2 = utilFunc.signExtend(data2, 64)
utilFunc.setRegValue(rtKey, data1.zfill(64), '0')
utilFunc.setRegValue(rt2Key, data2.zfill(64), '0')
if (wback):
if postIndex:
address = address + offset
address = utilFunc.intToBinary(address, 64)
utilFunc.setRegValue(rnKey, address, '1')
utilFunc.finalize_simple(instr)
def helper_rp(wback, postIndex, binary, instr):
rtKey = utilFunc.getRegKeyByStringKey(binary[27:32])
rnKey = utilFunc.getRegKeyByStringKey(binary[22:27])
rt2Key = utilFunc.getRegKeyByStringKey(binary[17:22])
imm7 = binary[10:17]
l = binary[9]
opc = binary[0:2]
if(l == '1'):
memOp = const.MEM_OP_LOAD
else:
memOp = const.MEM_OP_STORE
signed = (opc[1] != '0')
scale = 2 + utilFunc.uInt(opc[0])
dataSize = 8 << scale
offset = utilFunc.lsl(utilFunc.signExtend(imm7, 64), scale)
offset = utilFunc.sInt(offset, 64)
dbytes = dataSize / 8;
address = utilFunc.getRegValueByStringkey(binary[22:27], '1')
address = utilFunc.uInt(address)
if not(postIndex):
address = address + offset
type = binary[7:9]
if(opc == '00'):
r = 'w'
if(opc == '10'):
r = 'x'
if(type == '01'):
#Post-index
instr += " " + r + str(rtKey) +", " + r + str(rt2Key) + ", [x" + str(rnKey) + "], #" + str(offset)
if(type == '11'):
#Pre-index
instr += " " + r + str(rtKey) +", " + r + str(rt2Key) + ", [x" + str(rnKey) + ", #" + str(offset) + "]!"
if(type == '10'):
#Signed-offset
instr += " " + r + str(rtKey) +", " + r + str(rt2Key) + ", [x" + str(rnKey) + ", #" + str(offset) + "]"
if(memOp == const.MEM_OP_STORE):
data1 = utilFunc.getRegValueByStringkey(binary[27:32], '0')
data2 = utilFunc.getRegValueByStringkey(binary[17:22], '0')
utilFunc.storeToMemory(data1, address, dataSize)
utilFunc.storeToMemory(data2, address + dbytes, dataSize)
elif(memOp == const.MEM_OP_LOAD):
data1 = utilFunc.fetchFromMemory(address, dataSize)
data2 = utilFunc.fetchFromMemory(address + dbytes, dataSize)
if(data1 == const.TRAP or data2 == const.TRAP):
utilFunc.finalize_simple(instr)
print "HEY!!! There seems to be a problem - memory location can not be accessed"
print "Moving ahead without executing the instruction"
return
if(signed):
data1 = utilFunc.signExtend(data1, 64)
data2 = utilFunc.signExtend(data2, 64)
utilFunc.setRegValue(rtKey, data1.zfill(64), '0')
utilFunc.setRegValue(rt2Key, data2.zfill(64), '0')
if(wback):
if postIndex:
address = address + offset
address = utilFunc.intToBinary(address, 64)
utilFunc.setRegValue(rnKey, address, '1')
utilFunc.finalize_simple(instr)