def helper_l(binary, instr):
rtKey = utilFunc.getRegKeyByStringKey(binary[27:32])
imm19 = binary[8:27]
opc = binary[0:2]
signed = False
if (opc == '00'):
size = 4
elif (opc == '01'):
size = 8
elif (opc == '10'):
size = 4
signed = True
offset = utilFunc.signExtend(imm19 + '00', 64)
offset = utilFunc.sInt(offset, 64)
address = armdebug.getPC() + offset
dataSize = size * 8
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, 64)
instr += str(rtKey) + ", #" + str(offset)
utilFunc.finalize(rtKey, data.zfill(64), instr, '0')
def helper_l(binary, instr):
rtKey = utilFunc.getRegKeyByStringKey(binary[27:32])
imm19 = binary[8:27]
opc = binary[0:2]
signed = False
if(opc == '00'):
size = 4
elif(opc == '01'):
size = 8
elif(opc == '10'):
size = 4
signed = True
offset = utilFunc.signExtend(imm19 + '00', 64)
offset = utilFunc.sInt(offset, 64)
address = armdebug.getPC() + offset
dataSize = size * 8
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, 64)
instr += str(rtKey) + ", #" + str(offset)
utilFunc.finalize(rtKey, data.zfill(64), instr, '0')
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 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 PCwithPageOffset(N, offset):
PCint = armdebug.getPC()
PCbin = intToBinary(PCint, 64)
PCbinModified = PCbin[0:52] + '0' * N
PCnow = int(PCbinModified, 2)
return PCnow + offset
def PCwithOffset(offset):
return armdebug.getPC() + offset #don't change this, it is no 4 only!!!
def branchWithOffset(offset): # signed offset
armdebug.setPC((armdebug.getPC() + offset -
4)) # the magic! #-4 for the current instruction
def PCwithPageOffset(N,offset):
PCint=armdebug.getPC()
PCbin=intToBinary(PCint, 64)
PCbinModified=PCbin[0:52]+'0'*N
PCnow=int(PCbinModified,2)
return PCnow+offset
def PCwithOffset(offset):
return armdebug.getPC()+offset#don't change this, it is no 4 only!!!
def branchWithOffset(offset): # signed offset
armdebug.setPC((armdebug.getPC() + offset - 4)) # the magic! #-4 for the current instruction
