def main() -> int:
parser = argparse.ArgumentParser()
parser.add_argument('elf')
parser.add_argument('-v', '--verbose', action='store_true')
parser.add_argument(
'--dump-dmem',
metavar="FILE",
type=argparse.FileType('wb'),
help=("after execution, write the data memory contents to this file. "
"Use '-' to write to STDOUT."))
parser.add_argument(
'--dump-regs',
metavar="FILE",
type=argparse.FileType('w'),
help=("after execution, write the GPR and WDR contents to this file. "
"Use '-' to write to STDOUT."))
parser.add_argument(
'--dump-stats',
metavar="FILE",
type=argparse.FileType('w'),
help=("after execution, write execution statistics to this file. "
"Use '-' to write to STDOUT."))
args = parser.parse_args()
collect_stats = args.dump_stats is not None
sim = OTBNSim()
exp_end_addr = load_elf(sim, args.elf)
sim.state.ext_regs.write('START_ADDR', 0, False)
sim.state.ext_regs.commit()
sim.start()
sim.run(verbose=args.verbose, collect_stats=collect_stats)
if exp_end_addr is not None:
if sim.state.pc != exp_end_addr:
print('Run stopped at PC {:#x}, but _expected_end_addr was {:#x}.'.
format(sim.state.pc, exp_end_addr),
file=sys.stderr)
return 1
if args.dump_dmem is not None:
args.dump_dmem.write(sim.dump_data())
if args.dump_regs is not None:
for idx, value in enumerate(sim.state.gprs.peek_unsigned_values()):
args.dump_regs.write(' x{:<2} = 0x{:08x}\n'.format(idx, value))
for idx, value in enumerate(sim.state.wdrs.peek_unsigned_values()):
args.dump_regs.write(' w{:<2} = 0x{:064x}\n'.format(idx, value))
if collect_stats:
assert sim.stats is not None
stat_analyzer = ExecutionStatAnalyzer(sim.stats, args.elf)
args.dump_stats.write(stat_analyzer.dump())
return 0
def on_start(sim: OTBNSim, args: List[str]) -> Optional[OTBNSim]:
'''Jump to an address given as the (only) argument and start running'''
check_arg_count('start', 0, args)
print('START')
sim.state.ext_regs.commit()
sim.start(collect_stats=False)
return None
def on_start(sim: OTBNSim, args: List[str]) -> Optional[OTBNSim]:
'''Jump to an address given as the (only) argument and start running'''
if len(args) != 0:
raise ValueError('start expects zero arguments. Got {}.'.format(args))
print('START')
sim.state.ext_regs.commit()
sim.start(collect_stats=False)
return None
def on_start(sim: OTBNSim, args: List[str]) -> None:
'''Jump to an address given as the (only) argument and start running'''
if len(args) != 1:
raise ValueError('start expects exactly 1 argument. Got {}.'
.format(args))
addr = read_word('addr', args[0], 32)
if addr & 3:
raise ValueError('start address must be word-aligned. Got {:#08x}.'
.format(addr))
print('START {:#08x}'.format(addr))
sim.state.ext_regs.write('START_ADDR', addr, False)
sim.state.ext_regs.commit()
sim.start()
def prepare_sim_for_asm_file(asm_file: str,
tmpdir: py.path.local,
start_addr: int = 0) -> OTBNSim:
'''Set up the simulation of a single assembly file.
The returned simulation is ready to be run through the run() method.
'''
assert os.path.exists(asm_file)
elf_file = asm_and_link_one_file(asm_file, tmpdir)
sim = OTBNSim()
load_elf(sim, elf_file)
sim.state.ext_regs.write('START_ADDR', start_addr, False)
sim.state.ext_regs.commit()
sim.start()
return sim