def iread( self, start_addr, num_bytes ):
start_addr = hint( start_addr, promote=True )
num_bytes = hint( num_bytes, promote=True )
block_addr = self.block_mask & start_addr
block_mem = self.get_block_mem( block_addr )
return block_mem.iread( start_addr & self.addr_mask, num_bytes )
def iread( self, start_addr, num_bytes ):
start_addr = hint( start_addr, promote=True )
num_bytes = hint( num_bytes, promote=True )
end_addr = start_addr + num_bytes - 1
block_addr = self.block_mask & start_addr
block_mem = self.get_block_mem( block_addr )
# For mixed-width ISAs, the start_addr is not necessarily
# word-aligned, and can cross block memory boundaries. If there is
# such a case, we have two instruction reads and then form the word
# for it
block_end_addr = self.block_mask & end_addr
if block_addr == block_end_addr:
return block_mem.iread( start_addr & self.addr_mask, num_bytes )
else:
num_bytes1 = min( self.block_size - (start_addr & self.addr_mask),
num_bytes )
num_bytes2 = num_bytes - num_bytes1
block_mem1 = block_mem
block_mem2 = self.get_block_mem( block_end_addr )
value1 = block_mem1.iread( start_addr & self.addr_mask, num_bytes1 )
value2 = block_mem2.iread( 0, num_bytes2 )
value = value1 | ( value2 << (num_bytes1*8) )
#print "nb1", num_bytes1, "nb2", num_bytes2, \
# "ba1", hex(block_addr), "ba2", hex(block_end_addr), \
# "v1", hex(value1), "v2", hex(value2), "v", hex(value)
return value
def iread(self, start_addr, num_bytes):
start_addr = hint(start_addr, promote=True)
num_bytes = hint(num_bytes, promote=True)
end_addr = start_addr + num_bytes - 1
block_addr = self.block_mask & start_addr
block_mem = self.get_block_mem(block_addr)
# For mixed-width ISAs, the start_addr is not necessarily
# word-aligned, and can cross block memory boundaries. If there is
# such a case, we have two instruction reads and then form the word
# for it
block_end_addr = self.block_mask & end_addr
if block_addr == block_end_addr:
return block_mem.iread(start_addr & self.addr_mask, num_bytes)
else:
num_bytes1 = min(self.block_size - (start_addr & self.addr_mask),
num_bytes)
num_bytes2 = num_bytes - num_bytes1
block_mem1 = block_mem
block_mem2 = self.get_block_mem(block_end_addr)
value1 = block_mem1.iread(start_addr & self.addr_mask, num_bytes1)
value2 = block_mem2.iread(0, num_bytes2)
value = value1 | (value2 << (num_bytes1 * 8))
#print "nb1", num_bytes1, "nb2", num_bytes2, \
# "ba1", hex(block_addr), "ba2", hex(block_end_addr), \
# "v1", hex(value1), "v2", hex(value2), "v", hex(value)
return value
def write(self, start_addr, num_bytes, value):
if self.debug.enabled("mem"):
print ':: WR.MEM[%s] = %s' % (pad_hex(start_addr), pad_hex(value)),
block_addr = self.block_mask & start_addr
block_addr = hint(block_addr, promote=True)
block_mem = self.get_block_mem(block_addr)
block_mem.write(start_addr & self.addr_mask, num_bytes, value)
def write( self, start_addr, num_bytes, value ):
if self.debug.enabled( "mem" ):
print ':: WR.MEM[%s] = %s' % ( pad_hex( start_addr ),
pad_hex( value ) ),
block_addr = self.block_mask & start_addr
block_addr = hint( block_addr, promote=True )
block_mem = self.get_block_mem( block_addr )
block_mem.write( start_addr & self.addr_mask, num_bytes, value )
def read( self, start_addr, num_bytes ):
if self.debug.enabled( "mem" ):
print ':: RD.MEM[%s] = ' % pad_hex( start_addr ),
block_addr = self.block_mask & start_addr
block_addr = hint( block_addr, promote=True )
block_mem = self.get_block_mem( block_addr )
value = block_mem.read( start_addr & self.addr_mask, num_bytes )
if self.debug.enabled( "mem" ):
print '%s' % pad_hex( value ),
return value
def read(self, start_addr, num_bytes):
if self.debug.enabled("mem"):
print ':: RD.MEM[%s] = ' % pad_hex(start_addr),
block_addr = self.block_mask & start_addr
block_addr = hint(block_addr, promote=True)
block_mem = self.get_block_mem(block_addr)
value = block_mem.read(start_addr & self.addr_mask, num_bytes)
if self.debug.enabled("mem"):
print '%s' % pad_hex(value),
return value
def run( self ):
self = hint( self, promote=True )
s = self.state
max_insts = self.max_insts
jitdriver = self.jitdriver
while s.running:
jitdriver.jit_merge_point(
pc = s.fetch_pc(),
max_insts = max_insts,
state = s,
sim = self,
)
# 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, 8, " ", 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_bits = mem.read( pc, 4 )
else:
# we use trace elidable iread instead of just read
inst_bits = mem.iread( pc, 4 )
try:
inst, exec_fun = self.decode( inst_bits )
if s.debug.enabled( "insts" ):
print "%s %s %s" % (
pad_hex( inst_bits ),
pad( inst.str, 12 ),
pad( "%d" % s.num_insts, 8 ), ),
self.pre_execute()
exec_fun( s, inst )
except NotImplementedInstError:
# re-decode instruction to get the instruction name
inst, _ = self.decode( inst_bits )
print "Instruction not implemented: %s (pc: 0x%s), aborting!" \
% ( inst.str, pad_hex( pc ) )
break
except FatalError as error:
print "Exception in execution (pc: 0x%s), aborting!" % pad_hex( pc )
print "Exception message: %s" % error.msg
break
s.num_insts += 1 # TODO: should this be done inside instruction definition?
if s.stats_en: s.stat_num_insts += 1
self.post_execute()
if s.debug.enabled( "insts" ):
print
if s.debug.enabled( "regdump" ):
s.rf.print_regs( per_row=4 )
# check if we have reached the end of the maximum instructions and
# exit if necessary
if max_insts != 0 and s.num_insts >= 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,
sim = self,
)
print 'DONE! Status =', s.status
print 'Instructions Executed =', s.num_insts
def run(self):
self = hint(self, promote=True)
s = self.state
max_insts = self.max_insts
jitdriver = self.jitdriver
while s.running:
jitdriver.jit_merge_point(
pc=s.fetch_pc(),
max_insts=max_insts,
state=s,
sim=self,
)
# 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, 8, " ", 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_bits = mem.read(pc, 4)
else:
# we use trace elidable iread instead of just read
inst_bits = mem.iread(pc, 4)
try:
inst, exec_fun = self.decode(inst_bits)
if s.debug.enabled("insts"):
print "%s %s %s" % (
pad_hex(inst_bits),
pad(inst.str, 12),
pad("%d" % s.num_insts, 8),
),
self.pre_execute()
exec_fun(s, inst)
except NotImplementedInstError:
# re-decode instruction to get the instruction name
inst, _ = self.decode(inst_bits)
print "Instruction not implemented: %s (pc: 0x%s), aborting!" \
% ( inst.str, pad_hex( pc ) )
break
except FatalError as error:
print "Exception in execution (pc: 0x%s), aborting!" % pad_hex(
pc)
print "Exception message: %s" % error.msg
break
s.num_insts += 1 # TODO: should this be done inside instruction definition?
if s.stats_en: s.stat_num_insts += 1
self.post_execute()
if s.debug.enabled("insts"):
print
if s.debug.enabled("regdump"):
s.rf.print_regs(per_row=4)
# check if we have reached the end of the maximum instructions and
# exit if necessary
if max_insts != 0 and s.num_insts >= 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,
sim=self,
)
print 'DONE! Status =', s.status
print 'Instructions Executed =', s.num_insts