def explain(self, simulatorContext):
self.resetAccessStates()
bank = simulatorContext.regs.mode
simulatorContext.regs.deactivateBreakpoints()
disassembly = ""
description = "<ol>\n"
disCond, descCond = self._explainCondition()
description += descCond
self._readregs |= utils.registerWithCurrentBank(self.rm, bank)
self._readregs |= utils.registerWithCurrentBank(self.rs, bank)
if self.accumulate:
disassembly = "MLA"
description += "<li>Effectue une multiplication suivie d'une addition (A*B+C) entre :\n"
description += "<ol type=\"A\"><li>Le registre {}</li>\n".format(
utils.regSuffixWithBank(self.rm, bank))
description += "<li>Le registre {}</li>\n".format(
utils.regSuffixWithBank(self.rs, bank))
description += "<li>Le registre {}</li></ol>\n".format(
utils.regSuffixWithBank(self.rn, bank))
if self.modifyFlags:
disassembly += "S"
description += "<li>Met à jour les drapeaux de l'ALU en fonction du résultat de l'opération</li>\n"
disassembly += disCond + " R{}, R{}, R{}, R{} ".format(
self.rd, self.rm, self.rs, self.rn)
self._readregs |= utils.registerWithCurrentBank(self.rn, bank)
else:
disassembly = "MUL"
description += "<li>Effectue une multiplication (A*B) entre :\n"
description += "<ol type=\"A\"><li>Le registre {}</li>\n".format(
utils.regSuffixWithBank(self.rm, bank))
description += "<li>Le registre {}</li></ol>\n".format(
utils.regSuffixWithBank(self.rs, bank))
if self.modifyFlags:
disassembly += "S"
description += "<li>Met à jour les drapeaux de l'ALU en fonction du résultat de l'opération</li>\n"
disassembly += disCond + " R{}, R{}, R{} ".format(
self.rd, self.rm, self.rs)
description += "<li>Écrit le résultat dans R{}</li>".format(self.rd)
self._writeregs |= utils.registerWithCurrentBank(self.rd, bank)
if self.modifyFlags:
self._writeflags = {'c', 'z', 'n'}
description += "</ol>"
simulatorContext.regs.reactivateBreakpoints()
return disassembly, description
def explain(self, simulatorContext):
self.resetAccessStates()
bank = simulatorContext.regs.mode
simulatorContext.regs.deactivateBreakpoints()
disassembly = self.opcode
description = "<ol>\n"
disCond, descCond = self._explainCondition()
description += descCond
disassembly += disCond
if self.modeWrite:
disassembly += " SPSR" if self.usespsr else " CPSR"
if self.flagsOnly:
disassembly += "_flg"
if self.imm:
_unused, valToSet = utils.applyShift(
self.val, self.shift, simulatorContext.regs.C)
description += "<li>Écrit la constante {} dans {}</li>\n".format(
valToSet, "SPSR" if self.usespsr else "CPSR")
disassembly += ", #{}".format(hex(valToSet))
else:
disassembly += ", R{}".format(self.val)
self._writeregs |= utils.registerWithCurrentBank(
self.val, bank)
description += "<li>Lit la valeur de {}</li>\n".format(
utils.regSuffixWithBank(self.val, bank))
description += "<li>Écrit les 4 bits les plus significatifs de cette valeur (qui correspondent aux drapeaux) dans {}</li>\n".format(
"SPSR" if self.usespsr else "CPSR")
else:
description += "<li>Lit la valeur de {}</li>\n".format(
utils.regSuffixWithBank(self.val, bank))
description += "<li>Écrit cette valeur dans {}</li>\n".format(
"SPSR" if self.usespsr else "CPSR")
disassembly += ", R{}".format(self.val)
else: # Read
disassembly += " R{}, {}".format(
self.rd, "SPSR" if self.usespsr else "CPSR")
self._writeregs |= utils.registerWithCurrentBank(self.rd, bank)
description += "<li>Lit la valeur de {}</li>\n".format(
"SPSR" if self.usespsr else "CPSR")
description += "<li>Écrit le résultat dans {}</li>\n".format(
utils.regSuffixWithBank(self.rd, bank))
description += "</ol>"
simulatorContext.regs.reactivateBreakpoints()
return disassembly, description
def explain(self, simulatorContext):
self.resetAccessStates()
bank = simulatorContext.regs.mode
simulatorContext.regs.deactivateBreakpoints()
disassembly = "B"
description = "<ol>\n"
disCond, descCond = self._explainCondition()
description += descCond
if self.link:
self._nextInstrAddr = simulatorContext.regs[
15] - simulatorContext.pcoffset + 4
disassembly += "L"
self._writeregs = utils.registerWithCurrentBank(
14, bank) | utils.registerWithCurrentBank(15, bank)
self._readregs = utils.registerWithCurrentBank(15, bank)
description += "<li>Copie la valeur de {}-4 (l'adresse de la prochaine instruction) dans {}</li>\n".format(
utils.regSuffixWithBank(15, bank),
utils.regSuffixWithBank(14, bank))
if self.imm:
self._nextInstrAddr = simulatorContext.regs[15] + self.offsetImm
self._writeregs = utils.registerWithCurrentBank(15, bank)
self._readregs = utils.registerWithCurrentBank(15, bank)
valAdd = self.offsetImm
if valAdd < 0:
description += "<li>Soustrait la valeur {} à {}</li>\n".format(
-valAdd, utils.regSuffixWithBank(15, bank))
else:
description += "<li>Additionne la valeur {} à {}</li>\n".format(
valAdd, utils.regSuffixWithBank(15, bank))
else: # BX
disassembly += "X"
self._nextInstrAddr = simulatorContext.regs[self.addrReg]
self._writeregs = utils.registerWithCurrentBank(15, bank)
self._readregs = utils.registerWithCurrentBank(self.addrReg, bank)
description += "<li>Copie la valeur de {} dans {}</li>\n".format(
utils.regSuffixWithBank(self.addrReg, bank),
utils.regSuffixWithBank(15, bank))
disassembly += disCond
disassembly += " {}".format(hex(valAdd)) if self.imm else " {}".format(
utils.regSuffixWithBank(self.addrReg, bank))
if not self._checkCondition(simulatorContext.regs):
self._nextInstrAddr = simulatorContext.regs[
15] + 4 - simulatorContext.pcoffset
description += "</ol>"
simulatorContext.regs.reactivateBreakpoints()
return disassembly, description
def explain(self, simulatorContext):
self.resetAccessStates()
bank = simulatorContext.regs.mode
simulatorContext.regs.deactivateBreakpoints()
self._nextInstrAddr = -1
addr = simulatorContext.regs[self.rn]
disassembly = "SWP"
description = "<ol>\n"
disCond, descCond = self._explainCondition()
description += descCond
disassembly += disCond
sizedesc = "1 octet" if self.byte else "4 octets"
self._readregs |= utils.registerWithCurrentBank(self.rn, bank)
self._readregs |= utils.registerWithCurrentBank(self.rm, bank)
self._writeregs |= utils.registerWithCurrentBank(self.rd, bank)
description += "<li>Lit {} à partir de l'adresse contenue dans {}</li>\n".format(sizedesc, utils.regSuffixWithBank(self.rn, bank))
if self.byte:
disassembly += "B"
description += "<li>Écrit l'octet le moins significatif du registre {} à l'adresse contenue dans {}</li>\n".format(utils.regSuffixWithBank(self.rm, bank), utils.regSuffixWithBank(self.rn, bank))
description += "<li>Écrit l'octet le moins significatif de la valeur originale en mémoire dans {}</li>\n".format(utils.regSuffixWithBank(self.rd, bank))
self._readmem = set([addr])
self._writemem = set([addr])
else:
description += "<li>Écrit la valeur du registre {} à l'adresse contenue dans {}</li>\n".format(utils.regSuffixWithBank(self.rm, bank), utils.regSuffixWithBank(self.rn, bank))
description += "<li>Écrit dans {} la valeur originale de l'adresse contenue dans {}</li>\n".format(utils.regSuffixWithBank(self.rd, bank), utils.regSuffixWithBank(self.rn, bank))
self._readmem = set(range(addr, addr+4))
self._writemem = set(range(addr, addr+4))
disassembly += " R{}, R{}, [R{}]".format(self.rd, self.rm, self.rn)
description += "</ol>"
simulatorContext.regs.reactivateBreakpoints()
return disassembly, description
def explain(self, simulatorContext):
self.resetAccessStates()
bank = simulatorContext.regs.mode
simulatorContext.regs.deactivateBreakpoints()
modifiedFlags = {'Z', 'N'}
disassembly = self.opcode
description = "<ol>\n"
disCond, descCond = self._explainCondition()
disassembly += disCond
description += descCond
if self.modifyFlags and self.opcode not in ("TST", "TEQ", "CMP", "CMN"):
disassembly += "S"
if self.opcode not in ("MOV", "MVN"):
self._readregs |= utils.registerWithCurrentBank(self.rn, bank)
op2desc = ""
op2dis = ""
# Get second operand value
if self.imm:
op2 = self.shiftedVal
op2desc = "La constante {}".format(op2)
op2dis = "#{}".format(hex(op2))
else:
self._readregs |= utils.registerWithCurrentBank(self.op2reg, bank)
if self.shift.type != "LSL" or self.shift.value > 0 or not self.shift.immediate:
modifiedFlags.add('C')
shiftDesc = utils.shiftToDescription(self.shift, bank)
shiftinstr = utils.shiftToInstruction(self.shift)
op2desc = "Le registre {} {}".format(utils.regSuffixWithBank(self.op2reg, bank), shiftDesc)
op2dis = "R{}{}".format(self.op2reg, shiftinstr)
if not self.shift.immediate:
self._readregs |= utils.registerWithCurrentBank(self.shift.value, bank)
op2 = simulatorContext.regs[self.op2reg]
if self.opcode in ("AND", "TST"):
# These instructions do not affect the V flag (ARM Instr. set, 4.5.1)
# However, C flag "is set to the carry out from the barrel shifter [if the shift is not LSL #0]" (4.5.1)
# this was already done when we called _shiftVal
description += "<li>Effectue une opération ET entre:\n"
elif self.opcode in ("EOR", "TEQ"):
# These instructions do not affect the C and V flags (ARM Instr. set, 4.5.1)
description += "<li>Effectue une opération OU EXCLUSIF (XOR) entre:\n"
elif self.opcode in ("SUB", "CMP"):
modifiedFlags.update(('C', 'V'))
description += "<li>Effectue une soustraction (A-B) entre:\n"
if self.opcode == "SUB" and self.rd == simulatorContext.PC:
# We change PC, we show it in the editor
self._nextInstrAddr = simulatorContext.regs[self.rn] - op2
elif self.opcode == "RSB":
modifiedFlags.update(('C', 'V'))
description += "<li>Effectue une soustraction inverse (B-A) entre:\n"
elif self.opcode in ("ADD", "CMN"):
modifiedFlags.update(('C', 'V'))
description += "<li>Effectue une addition (A+B) entre:\n"
if self.opcode == "ADD" and self.rd == simulatorContext.PC:
# We change PC, we show it in the editor
self._nextInstrAddr = simulatorContext.regs[self.rn] + op2
elif self.opcode == "ADC":
modifiedFlags.update(('C', 'V'))
description += "<li>Effectue une addition avec retenue (A+B+carry) entre:\n"
elif self.opcode == "SBC":
modifiedFlags.update(('C', 'V'))
description += "<li>Effectue une soustraction avec emprunt (A-B+carry) entre:\n"
elif self.opcode == "RSC":
modifiedFlags.update(('C', 'V'))
description += "<li>Effectue une soustraction inverse avec emprunt (B-A+carry) entre:\n"
elif self.opcode == "ORR":
description += "<li>Effectue une opération OU entre:\n"
elif self.opcode == "MOV":
description += "<li>Lit la valeur de :\n"
if self.rd == simulatorContext.PC:
# We change PC, we show it in the editor
self._nextInstrAddr = op2
elif self.opcode == "BIC":
description += "<li>Effectue une opération ET NON entre:\n"
elif self.opcode == "MVN":
description += "<li>Effectue une opération NOT sur :\n"
if self.rd == simulatorContext.PC:
# We change PC, we show it in the editor
self._nextInstrAddr = ~op2
else:
raise ExecutionException("Mnémonique invalide : {}".format(self.opcode))
if self.opcode in ("MOV", "MVN"):
description += "<ol type=\"A\"><li>{}</li></ol>\n".format(op2desc)
disassembly += " R{}, ".format(self.rd)
elif self.opcode in ("TST", "TEQ", "CMP", "CMN"):
description += "<ol type=\"A\"><li>Le registre {}</li><li>{}</li></ol>\n".format(utils.regSuffixWithBank(self.rn, bank), op2desc)
disassembly += " R{}, ".format(self.rn)
else:
description += "<ol type=\"A\"><li>Le registre {}</li>\n".format(utils.regSuffixWithBank(self.rn, bank))
description += "<li>{}</li></ol>\n".format(op2desc)
disassembly += " R{}, R{}, ".format(self.rd, self.rn)
disassembly += op2dis
description += "</li>\n"
if self.modifyFlags:
if self.rd == simulatorContext.PC:
description += "<li>Copie le SPSR courant dans CPSR</li>\n"
else:
self._writeflags = modifiedFlags
description += "<li>Met à jour les drapeaux de l'ALU en fonction du résultat de l'opération</li>\n"
if self.opcode not in ("TST", "TEQ", "CMP", "CMN"):
description += "<li>Écrit le résultat dans {}</li>".format(utils.regSuffixWithBank(self.rd, bank))
self._writeregs |= utils.registerWithCurrentBank(self.rd, bank)
description += "</ol>"
simulatorContext.regs.reactivateBreakpoints()
return disassembly, description
def explain(self, simulatorContext):
self.resetAccessStates()
bank = simulatorContext.regs.mode
simulatorContext.regs.deactivateBreakpoints()
disassembly = ""
description = "<ol>\n"
disCond, descCond = self._explainCondition()
description += descCond
baseAddr = simulatorContext.regs[self.basereg]
lenAccess = len(self.reglist)
if self.mode == 'LDR':
disassembly = "POP" if self.basereg == 13 and self.writeback else "LDM"
else:
disassembly = "PUSH" if self.basereg == 13 and self.writeback else "STM"
if disassembly not in ("PUSH", "POP"):
if self.pre:
disassembly += "IB" if self.sign > 0 else "DB"
else:
disassembly += "IA" if self.sign > 0 else "DA"
disassembly += disCond
# See the explanations in execute() for this line
transferToUserBank = bank != "User" and self.sbit and (
self.mode == "STR" or 15 not in self.reglist)
bankToUse = "User" if transferToUserBank else bank
incmode = "incrémente" if self.sign > 0 else "décrémente"
if disassembly[:3] == 'POP':
description += "<li>Lit la valeur de SP</li>\n"
description += "<li>Pour chaque registre de la liste suivante, stocke la valeur contenue à l'adresse pointée par SP dans le registre, puis incrémente SP de 4.</li>\n"
elif disassembly[:4] == 'PUSH':
description += "<li>Lit la valeur de SP</li>\n"
description += "<li>Pour chaque registre de la liste suivante, décrémente SP de 4, puis stocke la valeur du registre à l'adresse pointée par SP.</li>\n"
elif self.mode == "LDR":
description += "<li>Lit la valeur de {}</li>\n".format(
utils.regSuffixWithBank(self.basereg, bank))
description += "<li>Pour chaque registre de la liste suivante, stocke la valeur contenue à l'adresse pointée par {reg} dans le registre, puis {incmode} {reg} de 4.</li>\n".format(
reg=utils.regSuffixWithBank(self.basereg, bank),
incmode=incmode)
else:
description += "<li>Lit la valeur de {}</li>\n".format(
utils.regSuffixWithBank(self.basereg, bank))
description += "<li>Pour chaque registre de la liste suivante, {incmode} {reg} de 4, puis stocke la valeur du registre à l'adresse pointée par {reg}.</li>\n".format(
reg=utils.regSuffixWithBank(self.basereg, bank),
incmode=incmode)
if disassembly[:3] not in ("PUS", "POP"):
disassembly += " R{}{},".format(self.basereg,
"!" if self.writeback else "")
listregstxt = " {"
beginReg, currentReg = None, None
for reg in self.reglist:
if beginReg is None:
beginReg = reg
elif reg != currentReg + 1:
listregstxt += "R{}".format(beginReg)
if currentReg == beginReg:
listregstxt += ", "
elif currentReg - beginReg == 1:
listregstxt += ", R{}, ".format(currentReg)
else:
listregstxt += "-R{}, ".format(currentReg)
beginReg = reg
currentReg = reg
if currentReg is None:
# No register (the last 16 bits are all zeros)
listregstxt = ""
else:
listregstxt += "R{}".format(beginReg)
if currentReg - beginReg == 1:
listregstxt += ", R{}".format(currentReg)
elif currentReg != beginReg:
listregstxt += "-R{}".format(currentReg)
listregstxt += "}"
disassembly += listregstxt
description += "<li>{}</li>\n".format(listregstxt)
if self.sbit:
disassembly += "^"
if self.mode == "LDR" and 15 in self.reglist:
description += "<li>Copie du SPSR courant dans le CPSR</li>\n"
self._readregs |= utils.registerWithCurrentBank(self.basereg, bank)
# Compute the affected memory areas
if self.sign > 0:
if self.pre:
baseAddr += 4
endAddr = lenAccess * 4 + baseAddr - 4
else:
endAddr = baseAddr
if self.pre:
endAddr -= 4
baseAddr = endAddr - (lenAccess - 1) * 4
endAddr += 4
if self.mode == "LDR":
self._writeregs |= reduce(operator.or_, [
utils.registerWithCurrentBank(reg, bankToUse)
for reg in self.reglist
])
self._readmem = set(range(baseAddr, endAddr))
if simulatorContext.PC in self.reglist:
try:
addrPC = baseAddr + (self.sign *
(len(self.reglist) - 1) * 4)
if self.pre:
addrPC += self.sign * 4
m = simulatorContext.mem.get(addrPC,
size=4,
mayTriggerBkpt=False)
except ExecutionException as ex:
# We do not want to handle user errors here;
# If there is an issue with the memory access, we simply carry on
pass
else:
if m is not None:
res = struct.unpack("<I", m)[0]
self._nextInstrAddr = res
else:
self._readregs |= reduce(operator.or_, [
utils.registerWithCurrentBank(reg, bankToUse)
for reg in self.reglist
])
self._writemem = set(range(baseAddr, endAddr))
description += "</ol>"
simulatorContext.regs.reactivateBreakpoints()
return disassembly, description
def explain(self, simulatorContext):
self.resetAccessStates()
bank = simulatorContext.regs.mode
simulatorContext.regs.deactivateBreakpoints()
self._nextInstrAddr = -1
disassembly = ""
description = "<ol>\n"
disCond, descCond = self._explainCondition()
description += descCond
if self.signed:
disassembly = "S"
else:
disassembly = "U"
self._readregs |= utils.registerWithCurrentBank(self.rm, bank)
self._readregs |= utils.registerWithCurrentBank(self.rs, bank)
if self.accumulate:
# MLAL
disassembly += "MLAL" + disCond
description += "<li>Effectue une multiplication et une addition {} sur 64 bits (A*B+[C,D]) entre :\n".format(
"signées" if self.signed else "non signées")
description += "<ol type=\"A\"><li>Le registre {}</li>\n".format(
utils.regSuffixWithBank(self.rm, bank))
description += "<li>Le registre {}</li>\n".format(
utils.regSuffixWithBank(self.rs, bank))
description += "<li>Le registre {}</li>\n".format(
utils.regSuffixWithBank(self.rdHi, bank))
description += "<li>Le registre {}</li></ol>\n".format(
utils.regSuffixWithBank(self.rdLo, bank))
self._readregs |= utils.registerWithCurrentBank(self.rdLo, bank)
self._readregs |= utils.registerWithCurrentBank(self.rdHi, bank)
else:
# MULL
disassembly += "MULL" + disCond
description += "<li>Effectue une multiplication {} (A*B) entre :\n".format(
"signée" if self.signed else "non signée")
description += "<ol type=\"A\"><li>Le registre {}</li>\n".format(
utils.regSuffixWithBank(self.rm, bank))
description += "<li>Le registre {}</li></ol>\n".format(
utils.regSuffixWithBank(self.rs, bank))
if self.modifyFlags:
disassembly += "S"
description += "<li>Met à jour les drapeaux de l'ALU en fonction du résultat de l'opération</li>\n"
disassembly += " R{}, R{}, R{}, R{} ".format(self.rdLo, self.rdHi,
self.rm, self.rs)
description += "<li>Écrit les 32 MSB du résultat dans R{} et les 32 LSB dans R{}</li>".format(
self.rdHi, self.rdLo)
self._writeregs |= utils.registerWithCurrentBank(self.rdLo, bank)
self._writeregs |= utils.registerWithCurrentBank(self.rdHi, bank)
if self.modifyFlags:
self._writeflags = set(('z', 'c', 'n'))
description += "</ol>"
simulatorContext.regs.reactivateBreakpoints()
return disassembly, description
def explain(self, simulatorContext):
self.resetAccessStates()
bank = simulatorContext.regs.mode
simulatorContext.regs.deactivateBreakpoints()
disassembly = self.mode
description = "<ol>\n"
disCond, descCond = self._explainCondition()
description += descCond
disassembly += disCond
self._readregs = utils.registerWithCurrentBank(self.basereg, bank)
addr = baseval = simulatorContext.regs[self.basereg]
description += "<li>Utilise la valeur du registre {} comme adresse de base</li>\n".format(
utils.regSuffixWithBank(self.basereg, bank))
descoffset = ""
if self.imm:
addr += self.sign * self.offsetImm
if self.offsetImm > 0:
if self.sign > 0:
descoffset = "<li>Additionne la constante {} à l'adresse de base</li>\n".format(
self.offsetImm)
else:
descoffset = "<li>Soustrait la constante {} à l'adresse de base</li>\n".format(
self.offsetImm)
else:
shiftDesc = utils.shiftToDescription(self.offsetRegShift, bank)
regDesc = utils.regSuffixWithBank(self.offsetReg, bank)
if self.sign > 0:
descoffset = "<li>Additionne le registre {} {} à l'adresse de base</li>\n".format(
regDesc, shiftDesc)
else:
descoffset = "<li>Soustrait le registre {} {} à l'adresse de base</li>\n".format(
regDesc, shiftDesc)
_, sval = utils.applyShift(simulatorContext.regs[self.offsetReg],
self.offsetRegShift,
simulatorContext.regs.C)
addr += self.sign * sval
self._readregs |= utils.registerWithCurrentBank(
self.offsetReg, bank)
realAddr = addr if self.pre else baseval
sizeaccess = 1 if self.byte else 4
sizedesc = "1 octet" if sizeaccess == 1 else "{} octets".format(
sizeaccess)
disassembly += "B" if sizeaccess == 1 else ""
if self.nonprivileged:
disassembly += "T"
disassembly += " R{}, [R{}".format(self.rd, self.basereg)
if self.mode == 'LDR':
if self.pre:
description += descoffset
description += "<li>Lit {} à partir de l'adresse obtenue (pré-incrément) et stocke le résultat dans {} (LDR)</li>\n".format(
sizedesc, utils.regSuffixWithBank(self.rd, bank))
else:
description += "<li>Lit {} à partir de l'adresse de base et stocke le résultat dans {} (LDR)</li>\n".format(
sizedesc, utils.regSuffixWithBank(self.rd, bank))
description += descoffset
self._readmem = set(range(realAddr, realAddr + sizeaccess))
self._writeregs |= utils.registerWithCurrentBank(self.rd, bank)
if self.rd == simulatorContext.PC:
try:
m = simulatorContext.mem.get(realAddr,
size=sizeaccess,
mayTriggerBkpt=False)
except ExecutionException as ex:
# We do not want to handle user errors here;
# If there is an issue with the memory access, we simply carry on
pass
else:
if m is not None:
res = struct.unpack("<B" if self.byte else "<I", m)[0]
self._nextInstrAddr = res
else: # STR
if self.pre:
description += descoffset
description += "<li>Copie la valeur du registre {} dans la mémoire, à l'adresse obtenue à l'étape précédente (pré-incrément), sur {} (STR)</li>\n".format(
utils.regSuffixWithBank(self.rd, bank), sizedesc)
else:
description += "<li>Copie la valeur du registre {} dans la mémoire, à l'adresse de base, sur {} (STR)</li>\n".format(
utils.regSuffixWithBank(self.rd, bank), sizedesc)
description += descoffset
self._writemem = set(range(realAddr, realAddr + sizeaccess))
self._readregs |= utils.registerWithCurrentBank(self.rd, bank)
if self.pre:
if self.imm:
if self.offsetImm == 0:
disassembly += "]"
else:
disassembly += ", #{}]".format(
hex(self.sign * self.offsetImm))
else:
disassembly += ", R{}".format(self.offsetReg)
disassembly += utils.shiftToInstruction(
self.offsetRegShift) + "]"
else:
# Post (a post-incrementation of 0 is useless)
disassembly += "]"
if self.imm and self.offsetImm != 0:
disassembly += ", #{}".format(hex(self.sign * self.offsetImm))
elif not self.imm:
disassembly += ", R{}".format(self.offsetReg)
disassembly += utils.shiftToInstruction(self.offsetRegShift)
if self.writeback:
self._writeregs |= utils.registerWithCurrentBank(
self.basereg, bank)
description += "<li>Écrit l'adresse effective dans le registre de base {} (mode writeback)</li>\n".format(
utils.regSuffixWithBank(self.basereg, bank))
if self.pre:
disassembly += "!"
description += "</ol>"
simulatorContext.regs.reactivateBreakpoints()
return disassembly, description