str = working_dir + "/" + str
# print " And I'm guessing this means I should look in '%s'" % str
if (os.path.isfile(str)):
# Load all subsequent symbol tables with this source as well
kern_path = str
# I'm pretty sure this is unnecessary; it's not like the kernel symbol table is
# going to change in flight, and even if it does, it's not like we need to keep
# both of them around. Let's reuse deflsym and avoid the assertion failure we
# get from calling new-symtable at runtime.
# usersym = "usersym%d" % cs410_dispatch.kernel_up
usersym = "deflsym"
cli.quiet_run_command("%s.source-path \"%s/;%s;%s\"" %
(usersym, working_dir, user_src_path, test_src_path))
cli.quiet_run_command("%s.load-symbols %s" % (usersym, str))
cli.quiet_run_command("cell0_context.symtable %s" % usersym)
else:
print "No such kernel image: '%s'; symbolic debugging won't work." % str
# print " !!> Cannot find that file; ignoring simulation request."
# print " !!> This probably means that symbolic debugging will not work."
# print " !!> Note that we are running loader callbacks anyway!"
# print " !!> Please contact a TA."
error = 1
for x in boot_callbacks:
x(cpu, cs410_dispatch.kernel_up, error)
cs410_dispatch.add_simcall(booted)
if tid in tidtaskname :
u.log('410', 'TID %d symbols are in %s' % (tid, tidtaskname[tid]))
else :
u.log('410', 'TID %d has unknown symbol table' % (tid))
tf = tidcontext[tid]
if isinstance(tf, dict) :
# Off core, stored decoded frame at registration time
u.log('410', 'TID %d is off-core right now' % tid)
u.print_trap_frame(tf)
else :
# On core, read from cpu right now
u.log('410', 'TID %d is on-core right now: %s' % (tid, tf.name))
u.print_trap_frame(u.trap_frame_from_cpu(tf))
def cmd_tids() :
u.log('410', 'TIDs registered right now: %r' % tidcontext.keys());
cs410_dispatch.add_simcall(tidinfo_set)
cs410_dispatch.add_simcall(tidinfo_del)
new_command("tidinfo", cmd_tidinfo, args=[arg(int_t, "tid")],
short="Ask kernel for thread information by TID",
doc="This reports thread information as derived from simulation state")
new_command("tids", cmd_tids,
short="Report the list of tids registered for tidinfo debugging.",
doc="This reports the list of tids being tracked.")
# u.logging['410-tidinfo'] = True
# u.printing['410-tidinfo'] = True
u.log('410-tidinfo', 'tidinfo loaded')
# Prints a string from system memory to the simics console
def lputs(dummy, cpu, param):
if cpu.cs[0] & 3:
mc = 'udbg'
else:
mc = 'kdbg'
cs410_utils.log(mc, cs410_utils.copyout_str(cpu, cpu.ecx))
# Loads memory size in kilobytes into %esi
def memsize(dummy, cpu, param):
cpu.eax = conf.system_cmp0.memory_megs * 1024
# Writes 1 into eax to determine whether we are in Simics.
def in_simics(dummy, cpu, param):
cpu.eax = 0x15410DE0
def halt(dummy, cpu, param):
cs410_utils.log('410-core', 'Halted.')
cs410_dispatch.run_halt_callbacks()
SIM_quit(0)
# Common code to register the below functions.
for fn in [in_simics, lputs, breakpoint, memsize, halt]:
cs410_dispatch.add_simcall(fn)
tf = tidcontext[tid]
if isinstance(tf, dict):
# Off core, stored decoded frame at registration time
u.log('410', 'TID %d is off-core right now' % tid)
u.print_trap_frame(tf)
else:
# On core, read from cpu right now
u.log('410', 'TID %d is on-core right now: %s' % (tid, tf.name))
u.print_trap_frame(u.trap_frame_from_cpu(tf))
def cmd_tids():
u.log('410', 'TIDs registered right now: %r' % tidcontext.keys())
cs410_dispatch.add_simcall(tidinfo_set)
cs410_dispatch.add_simcall(tidinfo_del)
new_command(
"tidinfo",
cmd_tidinfo,
args=[arg(int_t, "tid")],
short="Ask kernel for thread information by TID",
doc="This reports thread information as derived from simulation state")
new_command("tids",
cmd_tids,
short="Report the list of tids registered for tidinfo debugging.",
doc="This reports the list of tids being tracked.")
# u.logging['410-tidinfo'] = True
# u.printing['410-tidinfo'] = True
u.log('410-tidinfo', 'tidinfo loaded')
if (os.path.isfile(str)):
# Load all subsequent symbol tables with this source as well
kern_path = str
usersym = "deflsym"
sp = ""
for p in [working_dir + "/", user_src_path, test_src_path]:
if os.path.exists(p):
sp += p + ";"
def to_do_alone(cpu, times, error):
cli.run_command("%s.source-path \"%s\"" % (usersym, sp[:-1]))
cli.run_command("%s.load-symbols %s" % (usersym, str))
cli.run_command("system.cell_context.symtable %s" % usersym)
if len(sp) > 0:
boot_callbacks.insert(0, to_do_alone)
else:
print "No such kernel image: '%s'; symbolic debugging won't work." % str
error = 1
def run_callbacks():
for x in boot_callbacks:
x(cpu, cs410_dispatch.kernel_up, error)
cs410_utils.alone(run_callbacks)
cs410_dispatch.add_simcall(booted)
#st = SIM_get_object(s) # This would be the right thing to do but it
#SIM_delete_object(st) # doesn't appear to be supported by simics yet
# Registers a fork()ed process for debugging
def reg_child(dummy, cpu, param):
child_cr3 = cpu.ecx
parent_cr3 = cpu.edx
user_process_registry[child_cr3] = user_process_registry[parent_cr3]
cs410_utils.alone(switch_current_symtable, cpu)
# Sets the current symtable to be the one associated with the cr3
def switch_symtable(cr3):
if user_process_registry.has_key(cr3):
cli.quiet_run_command("cell0_context.symtable %s" %
user_process_registry[cr3])
else:
cli.quiet_run_command("cell0_context.symtable deflsym")
# Switch to the symtable associated with the current execution state
def switch_current_symtable(cpu):
switch_symtable(cpu.iface.int_register.read(cpu, ncr3))
def switch_creg(dummy, cpu, regnum, val):
if regnum == ncr3:
switch_symtable(val)
for fn in [reg_process, unreg_process, reg_child]:
cs410_dispatch.add_simcall(fn)
SIM_hap_add_callback("Core_Control_Register_Write", switch_creg, 0)
irqswitch, 0)
def acked(ignored):
return 32 + 6
def issue_command(num, arg, interactive):
global cmdq
cmdq.append({'op': num, 'arg': arg, 'interactive': interactive})
if (not conf.cpu0.iface.x86.has_pending_interrupt()
and not conf.cpu0.iface.x86.has_waiting_interrupt()):
conf.cpu0.iface.interrupt_ack.raise_interrupt(acked, None)
# Obsoleted by 410mods-dynamic-tidinfo.py, which is a vastly superior
# mechanism. NWF 20100120
#
# def cmd_tidinfo(tid):
# global issue_command
# issue_command(1, tid, True)
# SIM_continue(0)
#
#new_command("tidinfo", cmd_tidinfo, args=[arg(int_t, "tid", "?", 1)],
# short="Ask kernel for thread information by TID",
# doc="This restarts the simulation long enough to ask for the "
# + "kernel to translate a TID and dump out what the kernel "
# + "knew last it saw that thread." )
cs410_dispatch.add_simcall(osdev_next)
def enablebps(bp):
cli.quiet_run_command("enable %d" % bp)
def disablebps(bp):
cli.quiet_run_command("disable %d" % bp)
# This needs to run "alone" so that it can make all the API calls it
# needs to.
def swat_help(dummy, cpu, param):
global atomic_breakpoints
if not atomic_breakpoints:
setup_xchg()
f = enablebps
if cpu.ecx == 0:
f = disablebps
for brk in atomic_breakpoints:
f(brk)
def swat(dummy, cpu, param):
cs410_utils.alone(swat_help, dummy, cpu, param)
cs410_dispatch.add_simcall(swat)
for brk in atomic_breakpoints:
cs410_dispatch.breakpoint_handlers[brk] = xchg_handle_breakpoints
# print "Atomic assist present %s" % atomic_breakpoints
def enablebps(bp):
cli.quiet_run_command("enable %d" % bp)
def disablebps(bp):
cli.quiet_run_command("disable %d" % bp)
# This needs to run "alone" so that it can make all the API calls it
# needs to.
def swat_help(dummy, cpu, param):
global atomic_breakpoints
if not atomic_breakpoints:
setup_xchg()
f = enablebps
if cpu.ecx == 0:
f = disablebps
for brk in atomic_breakpoints:
f(brk)
def swat(dummy, cpu, param):
cs410_utils.alone(swat_help, dummy, cpu, param)
cs410_dispatch.add_simcall(swat)
cmd = cmdq[0]
u.copyin(cpu, cpu.ecx, "II", cmd['op'], cmd['arg'])
if cmd['interactive']:
SIM_hap_add_callback("Core_Interrupt_Status", irqswitch, 0)
def acked(ignored):
return 32 + 6
def issue_command(num, arg, interactive):
global cmdq
cmdq.append({ 'op': num,
'arg': arg,
'interactive': interactive })
conf.cpu0.iface.interrupt_ack.raise_interrupt(conf.cpu0, acked, None)
# Obsoleted by 410mods-dynamic-tidinfo.py, which is a vastly superior
# mechanism. NWF 20100120
#
# def cmd_tidinfo(tid):
# global issue_command
# issue_command(1, tid, True)
# SIM_continue(0)
#
#new_command("tidinfo", cmd_tidinfo, args=[arg(int_t, "tid", "?", 1)],
# short="Ask kernel for thread information by TID",
# doc="This restarts the simulation long enough to ask for the "
# + "kernel to translate a TID and dump out what the kernel "
# + "knew last it saw that thread." )
cs410_dispatch.add_simcall(osdev_next)