def decode(self, bits):
# TODO add decode inside instruction:
#return decode( bits )
inst_str, exec_fun = decode(bits)
return Instruction(bits, inst_str), exec_fun
def decode( self, bits ): inst_str, exec_fun = decode( bits ) return Instruction( bits, inst_str ), exec_fun
def run(state, max_insts=0):
s = state
while s.status == 0:
jitdriver.jit_merge_point(
pc=s.fetch_pc(),
max_insts=max_insts,
state=s,
)
# constant-fold pc and mem
pc = hint(s.fetch_pc(), promote=True)
old = pc
mem = hint(s.mem, promote=True)
if s.debug.enabled("insts"):
print pad("%x" % pc, 6, " ", False),
# the print statement in memcheck conflicts with @elidable in iread.
# So we use normal read if memcheck is enabled which includes the
# memory checks
if s.debug.enabled("memcheck"):
inst = mem.read(pc, 4)
else:
# we use trace elidable iread instead of just read
inst = mem.iread(pc, 4)
inst_str, exec_fun = decode(inst)
if s.debug.enabled("insts"):
print "%s %s %s" % (
pad_hex(inst),
pad(inst_str, 8),
pad("%d" % s.ncycles, 8),
),
try:
exec_fun(s, Instruction(inst))
except FatalError as error:
# TODO: maybe we can add a command line arg to just give a warning
# and not terminate execution
print "Exception in execution, aborting!"
print "Exception message: %s" % error.msg
break
s.ncycles += 1 # TODO: should this be done inside instruction definition?
if s.stats_en: s.stat_ncycles += 1
if s.debug.enabled("insts"):
print
if s.debug.enabled("regdump"):
s.rf.print_regs(per_row=4)
print '%s%s%s%s' % ('N' if s.N else '-', 'Z' if s.Z else '-',
'C' if s.C else '-', 'V' if s.V else '-')
# check if we have reached the end of the maximum instructions and
# exit if necessary
if max_insts != 0 and s.ncycles >= max_insts:
print "Reached the max_insts (%d), exiting." % max_insts
break
if s.fetch_pc() < old:
jitdriver.can_enter_jit(
pc=s.fetch_pc(),
max_insts=max_insts,
state=s,
)
print 'DONE! Status =', s.status
print 'Instructions Executed =', s.ncycles
def decode( self, bits ): # TODO add decode inside instruction: #return decode( bits ) inst_str, exec_fun = decode( bits ) return Instruction( bits, inst_str ), exec_fun
def run(state, max_insts=0):
s = state
while s.running:
jitdriver.jit_merge_point(
pc=s.pc,
max_insts=max_insts,
state=s,
)
# constant fold the pc
pc = hint(s.pc, promote=True)
old = pc
# We constant fold the s.mem object. This is important because
# otherwise the trace elidable iread doesn't work (assumes s.mem might
# have changed)
mem = hint(s.mem, promote=True)
if s.debug.enabled("insts"):
print pad("%x" % s.pc, 6, " ", False),
# the print statement in memcheck conflicts with @elidable in iread.
# So we use normal read if memcheck is enabled which includes the
# memory checks
if s.debug.enabled("memcheck"):
inst = mem.read(pc, 4)
else:
# we use trace elidable iread instead of just read
inst = mem.iread(pc, 4)
inst_str, exec_fun = decode(inst)
if s.debug.enabled("insts"):
print "%s %s %s" % (
pad_hex(inst),
pad(inst_str, 8),
pad("%d" % s.ncycles, 8),
),
exec_fun(s, Instruction(inst))
s.ncycles += 1 # TODO: should this be done inside instruction definition?
if s.stats_en: s.stat_ncycles += 1
if s.debug.enabled("insts"):
print
if s.debug.enabled("regdump"):
s.rf.print_regs()
# check if we have reached the end of the maximum instructions and
# exit if necessary
if max_insts != 0 and s.ncycles >= max_insts:
print "Reached the max_insts (%d), exiting." % max_insts
break
if s.pc < old:
jitdriver.can_enter_jit(
pc=s.pc,
max_insts=max_insts,
state=s,
)
print 'DONE! Status =', s.status
print 'Instructions Executed =', s.ncycles
