|
public LookupSymbol ( string name ) : |
||
| name | string | |
| return | ||
void check_for_mono_runtime(Inferior inferior, Bfd bfd)
{
TargetAddress info = bfd.LookupSymbol("MONO_DEBUGGER__debugger_info_ptr");
if (info.IsNull)
{
return;
}
TargetAddress data = inferior.ReadAddress(info);
if (data.IsNull)
{
//
// See CheckForPendingMonoInit() below - this should only happen when
// the Mono runtime is embedded - for instance Moonlight inside Firefox.
//
// Note that we have to do a symbol lookup for it because we do not know
// whether the mono runtime is recent enough to have this variable.
//
data = bfd.LookupSymbol("MONO_DEBUGGER__using_debugger");
if (data.IsNull)
{
Report.Error("Failed to initialize the Mono runtime!");
return;
}
inferior.WriteInteger(data, 1);
pending_mono_init = info;
// Add a breakpoint in mini_debugger_init, to make sure that InitializeMono()
// gets called in time to set the breakpoint at debugger_initialize, needed to
// initialize the notifications.
TargetAddress mini_debugger_init = bfd.LookupSymbol("mini_debugger_init");
if (!mini_debugger_init.IsNull)
{
Instruction insn = inferior.Architecture.ReadInstruction(inferior, mini_debugger_init);
if ((insn == null) || !insn.CanInterpretInstruction)
{
throw new InternalError("Unknown dynlink breakpoint: {0}", mini_debugger_init);
}
DynlinkBreakpoint init_breakpoint = new DynlinkBreakpoint(this, insn);
init_breakpoint.Insert(inferior);
}
return;
}
Process.InitializeMono(inferior, data);
}
void check_for_mono_runtime(Inferior inferior, Bfd bfd)
{
TargetAddress info = bfd.GetSectionAddress(".mdb_debug_info");
if (info.IsNull)
{
return;
}
TargetAddress data = inferior.ReadAddress(info);
if (data.IsNull)
{
//
// See CheckForPendingMonoInit() below - this should only happen when
// the Mono runtime is embedded - for instance Moonlight inside Firefox.
//
// Note that we have to do a symbol lookup for it because we do not know
// whether the mono runtime is recent enough to have this variable.
//
data = bfd.LookupSymbol("MONO_DEBUGGER__using_debugger");
if (data.IsNull)
{
Report.Error("Failed to initialize the Mono runtime!");
return;
}
inferior.WriteInteger(data, 1);
pending_mono_init = info;
return;
}
Process.InitializeMono(inferior, data);
}
void check_nptl_setxid(Inferior inferior, Bfd bfd)
{
if (setxid_breakpoint != null)
{
return;
}
TargetAddress vtable = bfd.LookupSymbol("__libc_pthread_functions");
if (vtable.IsNull)
{
return;
}
/*
* Big big hack to allow debugging gnome-vfs:
* We intercept any calls to __nptl_setxid() and make it
* return 0. This is safe to do since we do not allow
* debugging setuid programs or running as root, so setxid()
* will always be a no-op anyways.
*/
TargetAddress nptl_setxid = inferior.ReadAddress(vtable + 51 * inferior.TargetAddressSize);
if (!nptl_setxid.IsNull)
{
setxid_breakpoint = new SetXidBreakpoint(this, nptl_setxid);
setxid_breakpoint.Insert(inferior);
}
}
void read_dynamic_info(Inferior inferior)
{
if (has_dynlink_info)
{
if (!dyld_all_image_infos.IsNull)
{
do_update_shlib_info(inferior);
}
return;
}
TargetMemoryInfo info = Inferior.GetTargetMemoryInfo(AddressDomain.Global);
Bfd dyld_image = new Bfd(this, info, "/usr/lib/dyld", TargetAddress.Null, true);
dyld_all_image_infos = dyld_image.LookupSymbol("dyld_all_image_infos");
if (dyld_all_image_infos.IsNull)
{
return;
}
int size = 2 * inferior.TargetLongIntegerSize + 2 * inferior.TargetAddressSize;
TargetReader reader = new TargetReader(inferior.ReadMemory(dyld_all_image_infos, size));
reader.ReadLongInteger(); // version
reader.ReadLongInteger(); // infoArrayCount
reader.ReadAddress(); // infoArray
TargetAddress dyld_image_notifier = reader.ReadAddress();
has_dynlink_info = true;
Instruction insn = inferior.Architecture.ReadInstruction(inferior, dyld_image_notifier);
if ((insn == null) || !insn.CanInterpretInstruction)
{
throw new InternalError("Unknown dynlink breakpoint: {0}", dyld_image_notifier);
}
dynlink_breakpoint = new DynlinkBreakpoint(this, insn);
dynlink_breakpoint.Insert(inferior);
do_update_shlib_info(inferior);
check_loaded_library(inferior, main_bfd);
}
void read_dynamic_info(Inferior inferior)
{
if (has_dynlink_info) {
if (!dyld_all_image_infos.IsNull)
do_update_shlib_info (inferior);
return;
}
TargetMemoryInfo info = Inferior.GetTargetMemoryInfo (AddressDomain.Global);
Bfd dyld_image = new Bfd (this, info, "/usr/lib/dyld", TargetAddress.Null, true);
dyld_all_image_infos = dyld_image.LookupSymbol("dyld_all_image_infos");
if (dyld_all_image_infos.IsNull)
return;
int size = 2 * inferior.TargetLongIntegerSize + 2 * inferior.TargetAddressSize;
TargetReader reader = new TargetReader (inferior.ReadMemory (dyld_all_image_infos, size));
reader.ReadLongInteger (); // version
reader.ReadLongInteger (); // infoArrayCount
reader.ReadAddress (); // infoArray
TargetAddress dyld_image_notifier = reader.ReadAddress ();
has_dynlink_info = true;
Instruction insn = inferior.Architecture.ReadInstruction (inferior, dyld_image_notifier);
if ((insn == null) || !insn.CanInterpretInstruction)
throw new InternalError ("Unknown dynlink breakpoint: {0}", dyld_image_notifier);
dynlink_breakpoint = new DynlinkBreakpoint (this, insn);
dynlink_breakpoint.Insert (inferior);
do_update_shlib_info (inferior);
check_loaded_library (inferior, main_bfd);
void check_for_mono_runtime(Inferior inferior, Bfd bfd)
{
TargetAddress info = bfd.LookupSymbol ("MONO_DEBUGGER__debugger_info_ptr");
if (info.IsNull)
return;
TargetAddress data = inferior.ReadAddress (info);
if (data.IsNull) {
//
// See CheckForPendingMonoInit() below - this should only happen when
// the Mono runtime is embedded - for instance Moonlight inside Firefox.
//
// Note that we have to do a symbol lookup for it because we do not know
// whether the mono runtime is recent enough to have this variable.
//
data = bfd.LookupSymbol ("MONO_DEBUGGER__using_debugger");
if (data.IsNull) {
Report.Error ("Failed to initialize the Mono runtime!");
return;
}
inferior.WriteInteger (data, 1);
pending_mono_init = info;
// Add a breakpoint in mini_debugger_init, to make sure that InitializeMono()
// gets called in time to set the breakpoint at debugger_initialize, needed to
// initialize the notifications.
TargetAddress mini_debugger_init = bfd.LookupSymbol ("mini_debugger_init");
if (!mini_debugger_init.IsNull)
{
Instruction insn = inferior.Architecture.ReadInstruction (inferior, mini_debugger_init);
if ((insn == null) || !insn.CanInterpretInstruction)
throw new InternalError ("Unknown dynlink breakpoint: {0}", mini_debugger_init);
DynlinkBreakpoint init_breakpoint = new DynlinkBreakpoint (this, insn);
init_breakpoint.Insert (inferior);
}
return;
}
Process.InitializeMono (inferior, data);
}
void check_nptl_setxid(Inferior inferior, Bfd bfd)
{
if (setxid_breakpoint != null)
return;
TargetAddress vtable = bfd.LookupSymbol ("__libc_pthread_functions");
if (vtable.IsNull)
return;
/*
* Big big hack to allow debugging gnome-vfs:
* We intercept any calls to __nptl_setxid() and make it
* return 0. This is safe to do since we do not allow
* debugging setuid programs or running as root, so setxid()
* will always be a no-op anyways.
*/
TargetAddress nptl_setxid = inferior.ReadAddress (vtable + 51 * inferior.TargetAddressSize);
if (!nptl_setxid.IsNull) {
setxid_breakpoint = new SetXidBreakpoint (this, nptl_setxid);
setxid_breakpoint.Insert (inferior);
}
}
void check_for_mono_runtime(Inferior inferior, Bfd bfd)
{
TargetAddress info = bfd.GetSectionAddress (".mdb_debug_info");
if (info.IsNull)
return;
TargetAddress data = inferior.ReadAddress (info);
if (data.IsNull) {
//
// See CheckForPendingMonoInit() below - this should only happen when
// the Mono runtime is embedded - for instance Moonlight inside Firefox.
//
// Note that we have to do a symbol lookup for it because we do not know
// whether the mono runtime is recent enough to have this variable.
//
data = bfd.LookupSymbol ("MONO_DEBUGGER__using_debugger");
if (data.IsNull) {
Report.Error ("Failed to initialize the Mono runtime!");
return;
}
inferior.WriteInteger (data, 1);
pending_mono_init = info;
return;
}
Process.InitializeMono (inferior, data);
}
