from revelation.machine import RESET_ADDR
from revelation.sim import Revelation, new_memory
from revelation.test.machine import new_state
class MockRevelation(Revelation):
"""Revelation test harness.
This class should only be used in unit tests.
"""
def __init__(self):
Revelation.__init__(self)
self.debug = Debug()
Debug.global_enabled = True
def init_state(self, instructions, **args):
"""Load the program into a memory object.
This function should ONLY be called by unit tests.
"""
self.memory = new_memory(self.debug)
written_so_far = 0
for i, (data, width) in enumerate(instructions):
num_bytes = width / 8
self.memory.write(RESET_ADDR + written_so_far, num_bytes, data)
written_so_far += num_bytes
self.states[0x808] = new_state(mem=self.memory, debug=self.debug, **args)
self.states[0x808].set_first_core(True)
self.num_cores = len(self.states)
self.max_insts = len(instructions)
init_sim(MockRevelation())
# Load the program into a memory object
mem = Memory(size=memory_size, byte_storage=False)
entrypoint, breakpoint = load_program(exe_file, mem)
# Insert bootstrapping code into memory and initialize processor state
if testbin: self.state = test_init(mem, self.debug)
else:
self.state = syscall_init(mem, breakpoint, run_argv, run_envp,
self.debug)
self.state.testbin = testbin
self.state.exe_name = exe_name
#---------------------------------------------------------------------
# run
#---------------------------------------------------------------------
# Override sim's run to print stat_num_insts on exit
def run(self):
Sim.run(self)
print "Instructions Executed in Stat Region =", self.state.stat_num_insts
# this initializes similator and allows translation and python
# interpretation
init_sim(ParcSim())
print ':: RD.CPSR = %s%s%s%s' % (
'N' if self.state.N else '-', 'Z' if self.state.Z else '-',
'C' if self.state.C else '-', 'V' if self.state.V else '-'),
#-----------------------------------------------------------------------
# init_state
#-----------------------------------------------------------------------
# This method is called to load the program and initialize architectural
# state
def init_state(self, exe_file, exe_name, run_argv, run_envp, testbin):
# Load the program into a memory object
mem = Memory(size=memory_size, byte_storage=False)
entrypoint, breakpoint = load_program(
#open( filename, 'rb' ),
exe_file,
mem,
# TODO: GEM5 uses this alignment, remove?
alignment=1 << 12)
self.state = syscall_init(mem, entrypoint, breakpoint, run_argv,
run_envp, self.debug)
# this initializes similator and allows translation and python
# interpretation
init_sim(ArmSim())
entrypoint, breakpoint = load_program( exe_file, mem, is_64bit=True )
# Insert bootstrapping code into memory and initialize processor state
#if testbin: self.state = test_init ( mem, self.debug )
#else: self.state = syscall_init( mem, breakpoint, run_argv,
# run_envp, self.debug )
if testbin:
self.state = test_init( mem, self.debug )
else:
self.state = syscall_init( mem, breakpoint, run_argv,
run_envp, self.debug )
self.state.testbin = testbin
self.state.exe_name = exe_name
#---------------------------------------------------------------------
# run
#---------------------------------------------------------------------
# Override sim's run to print stat_num_insts on exit
def run( self ):
Sim.run( self )
# this initializes similator and allows translation and python
# interpretation
init_sim( RiscVSim() )
from epiphany.isa import decode
from epiphany.machine import State, RESET_ADDR
from epiphany.instruction import Instruction
MEMORY_SIZE = 2**18 # 2^8 x 2^10 == 32kB.
def new_memory():
return Memory(size=MEMORY_SIZE, byte_storage=True)
class Epiphany(Sim):
def __init__(self):
Sim.__init__(self, "Epiphany", jit_enabled=True)
def decode(self, bits):
inst_str, exec_fun = decode(bits)
return Instruction(bits, inst_str), exec_fun
def init_state(self, exe_file, filename, run_argv,
envp, testbin, is_test=False):
if is_test:
self.debug = Debug()
Debug.global_enabled = True
mem = new_memory()
_, _ = load_program(exe_file, mem)
self.state = State(mem, self.debug, reset_addr=RESET_ADDR)
init_sim(Epiphany())
print
print 'Program in memory just after writing:'
# We are expecting to see a nop16 and a halt16, i.e.:
# 1: 418 # 16bits
# 2: 29492163 # 32bits
# 3: 450 # 16bits
read_so_far = 0
for i, (_, width) in enumerate(instructions):
num_bytes = width / 8
read_so_far += num_bytes
inst = mem.read(read_so_far, num_bytes)
print "{0}: {1:016b} ({2}) # width={3}bits".format(i, inst, inst, width)
print
self.state = ExampleState(mem, Debug(flags=['insts', 'mem', 'rf', 'regdump']))
init_sim(ExampleMachine())
def test_16bit_instructions():
instructions = [(0b0000000110100010, 16), # nop16
(0b0000000111000010, 16), # halt16
]
machine = ExampleMachine()
machine.load_program(instructions)
print
print 'Program in memory just before simulation:'
for i in range(4):
inst = machine.state.mem.read(i, 1)
print "{0}: {1:016b} ({2}) # width={3}bytes".format(i, inst, inst, 2),
if (i + 1) % 2 == 0: print
print
return Instruction( bits, inst_str ), exec_fun
#-----------------------------------------------------------------------
# init_state
#-----------------------------------------------------------------------
# This method is called to load the program and initialize architectural
# state
def init_state( self, exe_file, exe_name, run_argv, run_envp, testbin ):
# Load the program into a memory object
mem = Memory( size=memory_size, byte_storage=False )
entrypoint, breakpoint = load_program(
#open( filename, 'rb' ),
exe_file,
mem,
# TODO: GEM5 uses this alignment, remove?
alignment = 1<<12
)
self.state = syscall_init( mem, entrypoint, breakpoint,
run_argv, run_envp, self.debug )
# this initializes similator and allows translation and python
# interpretation
init_sim( ArmSim() )
from pydgin.sim import init_sim
from epiphany.machine import RESET_ADDR
from epiphany.sim import Epiphany, new_memory
from epiphany.test.machine import new_state
class MockEpiphany(Epiphany):
"""Epiphany test harness.
This class should only be used in unit tests.
"""
def __init__(self):
Epiphany.__init__(self)
self.debug = Debug()
Debug.global_enabled = True
def init_state(self, instructions, **args):
"""Load the program into a memory object.
This function should ONLY be called by unit tests.
"""
mem = new_memory()
written_so_far = 0
for i, (data, width) in enumerate(instructions):
num_bytes = width / 8
mem.write(RESET_ADDR + written_so_far, num_bytes, data)
written_so_far += num_bytes
self.state = new_state(mem=mem, debug=self.debug, **args)
self.max_insts = len(instructions)
init_sim(MockEpiphany())
self.memory = new_memory(self.logger)
if self.profile:
timer = time.time()
print 'Memory creation took: %fs' % (timer - self.timer)
self.timer = timer
f_row = (self.first_core >> 6) & 0x3f
f_col = self.first_core & 0x3f
elf = elf_reader(elf_file, is_64bit=False)
coreids = []
for row in xrange(self.rows):
for col in xrange(self.cols):
coreid = get_coreid_from_coords(f_row + row, f_col + col)
coreids.append(coreid)
print ('Loading program %s on to core %s (%s, %s)' %
(filename, hex(coreid), zfill(str(f_row + row), 2),
zfill(str(f_col + col), 2)))
self.states[coreid] = State(self.memory, self.debug,
logger=self.logger, coreid=coreid)
code_blocks = load_program(elf, self.memory, coreids, ext_base=self.ext_base,
ext_size=self.ext_size)
for section in code_blocks:
self.memory.code_blocks.append(section)
self.states[coreids[0]].set_first_core(True)
if self.profile:
timer = time.time()
print 'ELF file loader took: %fs' % (timer - self.timer)
self.timer = timer
init_sim(Revelation())