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llvm-project/lldb/source/Target/Process.cpp

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//===-- Process.cpp ---------------------------------------------*- C++ -*-===//
//
// The LLVM Compiler Infrastructure
//
// This file is distributed under the University of Illinois Open Source
// License. See LICENSE.TXT for details.
//
//===----------------------------------------------------------------------===//
#include "lldb/Target/Process.h"
#include "lldb/lldb-private-log.h"
#include "lldb/Breakpoint/StoppointCallbackContext.h"
#include "lldb/Breakpoint/BreakpointLocation.h"
#include "lldb/Core/Event.h"
#include "lldb/Core/Debugger.h"
#include "lldb/Core/Log.h"
#include "lldb/Core/PluginManager.h"
#include "lldb/Core/State.h"
#include "lldb/Interpreter/CommandInterpreter.h"
#include "lldb/Host/Host.h"
#include "lldb/Target/ABI.h"
#include "lldb/Target/LanguageRuntime.h"
#include "lldb/Target/CPPLanguageRuntime.h"
#include "lldb/Target/ObjCLanguageRuntime.h"
#include "lldb/Target/RegisterContext.h"
#include "lldb/Target/StopInfo.h"
#include "lldb/Target/Target.h"
#include "lldb/Target/TargetList.h"
#include "lldb/Target/Thread.h"
#include "lldb/Target/ThreadPlan.h"
using namespace lldb;
using namespace lldb_private;
Process*
Process::FindPlugin (Target &target, const char *plugin_name, Listener &listener)
{
ProcessCreateInstance create_callback = NULL;
if (plugin_name)
{
create_callback = PluginManager::GetProcessCreateCallbackForPluginName (plugin_name);
if (create_callback)
{
std::auto_ptr<Process> debugger_ap(create_callback(target, listener));
if (debugger_ap->CanDebug(target))
return debugger_ap.release();
}
}
else
{
for (uint32_t idx = 0; (create_callback = PluginManager::GetProcessCreateCallbackAtIndex(idx)) != NULL; ++idx)
{
std::auto_ptr<Process> debugger_ap(create_callback(target, listener));
if (debugger_ap->CanDebug(target))
return debugger_ap.release();
}
}
return NULL;
}
//----------------------------------------------------------------------
// Process constructor
//----------------------------------------------------------------------
Process::Process(Target &target, Listener &listener) :
UserID (LLDB_INVALID_PROCESS_ID),
Broadcaster ("Process"),
ProcessInstanceSettings (*(Process::GetSettingsController().get())),
m_target (target),
m_public_state (eStateUnloaded),
m_private_state (eStateUnloaded),
m_private_state_broadcaster ("lldb.process.internal_state_broadcaster"),
m_private_state_control_broadcaster ("lldb.process.internal_state_control_broadcaster"),
m_private_state_listener ("lldb.process.internal_state_listener"),
m_private_state_control_wait(),
m_private_state_thread (LLDB_INVALID_HOST_THREAD),
m_stop_id (0),
m_thread_index_id (0),
m_exit_status (-1),
m_exit_string (),
m_thread_list (this),
m_notifications (),
m_persistent_vars(),
m_listener(listener),
m_unix_signals ()
{
UpdateInstanceName();
Log *log = lldb_private::GetLogIfAllCategoriesSet (LIBLLDB_LOG_OBJECT);
if (log)
log->Printf ("%p Process::Process()", this);
listener.StartListeningForEvents (this,
eBroadcastBitStateChanged |
eBroadcastBitInterrupt |
eBroadcastBitSTDOUT |
eBroadcastBitSTDERR);
m_private_state_listener.StartListeningForEvents(&m_private_state_broadcaster,
eBroadcastBitStateChanged);
m_private_state_listener.StartListeningForEvents(&m_private_state_control_broadcaster,
eBroadcastInternalStateControlStop |
eBroadcastInternalStateControlPause |
eBroadcastInternalStateControlResume);
}
//----------------------------------------------------------------------
// Destructor
//----------------------------------------------------------------------
Process::~Process()
{
Log *log = lldb_private::GetLogIfAllCategoriesSet (LIBLLDB_LOG_OBJECT);
if (log)
log->Printf ("%p Process::~Process()", this);
StopPrivateStateThread();
}
void
Process::Finalize()
{
// Do any cleanup needed prior to being destructed... Subclasses
// that override this method should call this superclass method as well.
}
void
Process::RegisterNotificationCallbacks (const Notifications& callbacks)
{
m_notifications.push_back(callbacks);
if (callbacks.initialize != NULL)
callbacks.initialize (callbacks.baton, this);
}
bool
Process::UnregisterNotificationCallbacks(const Notifications& callbacks)
{
std::vector<Notifications>::iterator pos, end = m_notifications.end();
for (pos = m_notifications.begin(); pos != end; ++pos)
{
if (pos->baton == callbacks.baton &&
pos->initialize == callbacks.initialize &&
pos->process_state_changed == callbacks.process_state_changed)
{
m_notifications.erase(pos);
return true;
}
}
return false;
}
void
Process::SynchronouslyNotifyStateChanged (StateType state)
{
std::vector<Notifications>::iterator notification_pos, notification_end = m_notifications.end();
for (notification_pos = m_notifications.begin(); notification_pos != notification_end; ++notification_pos)
{
if (notification_pos->process_state_changed)
notification_pos->process_state_changed (notification_pos->baton, this, state);
}
}
// FIXME: We need to do some work on events before the general Listener sees them.
// For instance if we are continuing from a breakpoint, we need to ensure that we do
// the little "insert real insn, step & stop" trick. But we can't do that when the
// event is delivered by the broadcaster - since that is done on the thread that is
// waiting for new events, so if we needed more than one event for our handling, we would
// stall. So instead we do it when we fetch the event off of the queue.
//
StateType
Process::GetNextEvent (EventSP &event_sp)
{
StateType state = eStateInvalid;
if (m_listener.GetNextEventForBroadcaster (this, event_sp) && event_sp)
state = Process::ProcessEventData::GetStateFromEvent (event_sp.get());
return state;
}
StateType
Process::WaitForProcessToStop (const TimeValue *timeout)
{
StateType match_states[] = { eStateStopped, eStateCrashed, eStateDetached, eStateExited, eStateUnloaded };
return WaitForState (timeout, match_states, sizeof(match_states) / sizeof(StateType));
}
StateType
Process::WaitForState
(
const TimeValue *timeout,
const StateType *match_states, const uint32_t num_match_states
)
{
EventSP event_sp;
uint32_t i;
StateType state = GetState();
while (state != eStateInvalid)
{
// If we are exited or detached, we won't ever get back to any
// other valid state...
if (state == eStateDetached || state == eStateExited)
return state;
state = WaitForStateChangedEvents (timeout, event_sp);
for (i=0; i<num_match_states; ++i)
{
if (match_states[i] == state)
return state;
}
}
return state;
}
bool
Process::HijackProcessEvents (Listener *listener)
{
if (listener != NULL)
{
return HijackBroadcaster(listener, eBroadcastBitStateChanged);
}
else
return false;
}
void
Process::RestoreProcessEvents ()
{
RestoreBroadcaster();
}
StateType
Process::WaitForStateChangedEvents (const TimeValue *timeout, EventSP &event_sp)
{
Log *log = lldb_private::GetLogIfAllCategoriesSet (LIBLLDB_LOG_PROCESS);
if (log)
log->Printf ("Process::%s (timeout = %p, event_sp)...", __FUNCTION__, timeout);
StateType state = eStateInvalid;
if (m_listener.WaitForEventForBroadcasterWithType (timeout,
this,
eBroadcastBitStateChanged,
event_sp))
state = Process::ProcessEventData::GetStateFromEvent(event_sp.get());
log = lldb_private::GetLogIfAllCategoriesSet (LIBLLDB_LOG_PROCESS);
if (log)
log->Printf ("Process::%s (timeout = %p, event_sp) => %s",
__FUNCTION__,
timeout,
StateAsCString(state));
return state;
}
Event *
Process::PeekAtStateChangedEvents ()
{
Log *log = lldb_private::GetLogIfAllCategoriesSet (LIBLLDB_LOG_PROCESS);
if (log)
log->Printf ("Process::%s...", __FUNCTION__);
Event *event_ptr;
event_ptr = m_listener.PeekAtNextEventForBroadcasterWithType (this,
eBroadcastBitStateChanged);
log = lldb_private::GetLogIfAllCategoriesSet (LIBLLDB_LOG_PROCESS);
if (log)
{
if (event_ptr)
{
log->Printf ("Process::%s (event_ptr) => %s",
__FUNCTION__,
StateAsCString(ProcessEventData::GetStateFromEvent (event_ptr)));
}
else
{
log->Printf ("Process::%s no events found",
__FUNCTION__);
}
}
return event_ptr;
}
StateType
Process::WaitForStateChangedEventsPrivate (const TimeValue *timeout, EventSP &event_sp)
{
Log *log = lldb_private::GetLogIfAllCategoriesSet (LIBLLDB_LOG_PROCESS);
if (log)
log->Printf ("Process::%s (timeout = %p, event_sp)...", __FUNCTION__, timeout);
StateType state = eStateInvalid;
if (m_private_state_listener.WaitForEventForBroadcasterWithType(timeout,
&m_private_state_broadcaster,
eBroadcastBitStateChanged,
event_sp))
state = Process::ProcessEventData::GetStateFromEvent(event_sp.get());
// This is a bit of a hack, but when we wait here we could very well return
// to the command-line, and that could disable the log, which would render the
// log we got above invalid.
log = lldb_private::GetLogIfAllCategoriesSet (LIBLLDB_LOG_PROCESS);
if (log)
log->Printf ("Process::%s (timeout = %p, event_sp) => %s", __FUNCTION__, timeout, StateAsCString(state));
return state;
}
bool
Process::WaitForEventsPrivate (const TimeValue *timeout, EventSP &event_sp, bool control_only)
{
Log *log = lldb_private::GetLogIfAllCategoriesSet (LIBLLDB_LOG_PROCESS);
if (log)
log->Printf ("Process::%s (timeout = %p, event_sp)...", __FUNCTION__, timeout);
if (control_only)
return m_private_state_listener.WaitForEventForBroadcaster(timeout, &m_private_state_control_broadcaster, event_sp);
else
return m_private_state_listener.WaitForEvent(timeout, event_sp);
}
bool
Process::IsRunning () const
{
return StateIsRunningState (m_public_state.GetValue());
}
int
Process::GetExitStatus ()
{
if (m_public_state.GetValue() == eStateExited)
return m_exit_status;
return -1;
}
const char *
Process::GetExitDescription ()
{
if (m_public_state.GetValue() == eStateExited && !m_exit_string.empty())
return m_exit_string.c_str();
return NULL;
}
void
Process::SetExitStatus (int status, const char *cstr)
{
m_exit_status = status;
if (cstr)
m_exit_string = cstr;
else
m_exit_string.clear();
SetPrivateState (eStateExited);
}
// This static callback can be used to watch for local child processes on
// the current host. The the child process exits, the process will be
// found in the global target list (we want to be completely sure that the
// lldb_private::Process doesn't go away before we can deliver the signal.
bool
Process::SetProcessExitStatus
(
void *callback_baton,
lldb::pid_t pid,
int signo, // Zero for no signal
int exit_status // Exit value of process if signal is zero
)
{
if (signo == 0 || exit_status)
{
TargetSP target_sp(Debugger::FindTargetWithProcessID (pid));
if (target_sp)
{
ProcessSP process_sp (target_sp->GetProcessSP());
if (process_sp)
{
const char *signal_cstr = NULL;
if (signo)
signal_cstr = process_sp->GetUnixSignals().GetSignalAsCString (signo);
process_sp->SetExitStatus (exit_status, signal_cstr);
}
}
return true;
}
return false;
}
uint32_t
Process::GetNextThreadIndexID ()
{
return ++m_thread_index_id;
}
StateType
Process::GetState()
{
// If any other threads access this we will need a mutex for it
return m_public_state.GetValue ();
}
void
Process::SetPublicState (StateType new_state)
{
Log *log = lldb_private::GetLogIfAnyCategoriesSet (LIBLLDB_LOG_STATE);
if (log)
log->Printf("Process::SetPublicState (%s)", StateAsCString(new_state));
m_public_state.SetValue (new_state);
}
StateType
Process::GetPrivateState ()
{
return m_private_state.GetValue();
}
void
Process::SetPrivateState (StateType new_state)
{
Log *log = lldb_private::GetLogIfAnyCategoriesSet (LIBLLDB_LOG_STATE);
bool state_changed = false;
if (log)
log->Printf("Process::SetPrivateState (%s)", StateAsCString(new_state));
Mutex::Locker locker(m_private_state.GetMutex());
const StateType old_state = m_private_state.GetValueNoLock ();
state_changed = old_state != new_state;
if (state_changed)
{
m_private_state.SetValueNoLock (new_state);
if (StateIsStoppedState(new_state))
{
m_stop_id++;
if (log)
log->Printf("Process::SetPrivateState (%s) stop_id = %u", StateAsCString(new_state), m_stop_id);
}
// Use our target to get a shared pointer to ourselves...
m_private_state_broadcaster.BroadcastEvent (eBroadcastBitStateChanged, new ProcessEventData (GetTarget().GetProcessSP(), new_state));
}
else
{
if (log)
log->Printf("Process::SetPrivateState (%s) state didn't change. Ignoring...", StateAsCString(new_state), StateAsCString(old_state));
}
}
uint32_t
Process::GetStopID() const
{
return m_stop_id;
}
addr_t
Process::GetImageInfoAddress()
{
return LLDB_INVALID_ADDRESS;
}
DynamicLoader *
Process::GetDynamicLoader()
{
return NULL;
}
const ABI *
Process::GetABI()
{
ConstString& triple = m_target_triple;
if (triple.IsEmpty())
return NULL;
if (m_abi_sp.get() == NULL)
{
m_abi_sp.reset(ABI::FindPlugin(triple));
}
return m_abi_sp.get();
}
LanguageRuntime *
Process::GetLanguageRuntime(lldb::LanguageType language)
{
LanguageRuntimeCollection::iterator pos;
pos = m_language_runtimes.find (language);
if (pos == m_language_runtimes.end())
{
lldb::LanguageRuntimeSP runtime(LanguageRuntime::FindPlugin(this, language));
m_language_runtimes[language]
= runtime;
return runtime.get();
}
else
return (*pos).second.get();
}
CPPLanguageRuntime *
Process::GetCPPLanguageRuntime ()
{
LanguageRuntime *runtime = GetLanguageRuntime(eLanguageTypeC_plus_plus);
if (runtime != NULL && runtime->GetLanguageType() == eLanguageTypeC_plus_plus)
return static_cast<CPPLanguageRuntime *> (runtime);
return NULL;
}
ObjCLanguageRuntime *
Process::GetObjCLanguageRuntime ()
{
LanguageRuntime *runtime = GetLanguageRuntime(eLanguageTypeObjC);
if (runtime != NULL && runtime->GetLanguageType() == eLanguageTypeObjC)
return static_cast<ObjCLanguageRuntime *> (runtime);
return NULL;
}
BreakpointSiteList &
Process::GetBreakpointSiteList()
{
return m_breakpoint_site_list;
}
const BreakpointSiteList &
Process::GetBreakpointSiteList() const
{
return m_breakpoint_site_list;
}
void
Process::DisableAllBreakpointSites ()
{
m_breakpoint_site_list.SetEnabledForAll (false);
}
Error
Process::ClearBreakpointSiteByID (lldb::user_id_t break_id)
{
Error error (DisableBreakpointSiteByID (break_id));
if (error.Success())
m_breakpoint_site_list.Remove(break_id);
return error;
}
Error
Process::DisableBreakpointSiteByID (lldb::user_id_t break_id)
{
Error error;
BreakpointSiteSP bp_site_sp = m_breakpoint_site_list.FindByID (break_id);
if (bp_site_sp)
{
if (bp_site_sp->IsEnabled())
error = DisableBreakpoint (bp_site_sp.get());
}
else
{
error.SetErrorStringWithFormat("invalid breakpoint site ID: %i", break_id);
}
return error;
}
Error
Process::EnableBreakpointSiteByID (lldb::user_id_t break_id)
{
Error error;
BreakpointSiteSP bp_site_sp = m_breakpoint_site_list.FindByID (break_id);
if (bp_site_sp)
{
if (!bp_site_sp->IsEnabled())
error = EnableBreakpoint (bp_site_sp.get());
}
else
{
error.SetErrorStringWithFormat("invalid breakpoint site ID: %i", break_id);
}
return error;
}
lldb::break_id_t
Process::CreateBreakpointSite (BreakpointLocationSP &owner, bool use_hardware)
{
const addr_t load_addr = owner->GetAddress().GetLoadAddress (&m_target);
if (load_addr != LLDB_INVALID_ADDRESS)
{
BreakpointSiteSP bp_site_sp;
// Look up this breakpoint site. If it exists, then add this new owner, otherwise
// create a new breakpoint site and add it.
bp_site_sp = m_breakpoint_site_list.FindByAddress (load_addr);
if (bp_site_sp)
{
bp_site_sp->AddOwner (owner);
owner->SetBreakpointSite (bp_site_sp);
return bp_site_sp->GetID();
}
else
{
bp_site_sp.reset (new BreakpointSite (&m_breakpoint_site_list, owner, load_addr, LLDB_INVALID_THREAD_ID, use_hardware));
if (bp_site_sp)
{
if (EnableBreakpoint (bp_site_sp.get()).Success())
{
owner->SetBreakpointSite (bp_site_sp);
return m_breakpoint_site_list.Add (bp_site_sp);
}
}
}
}
// We failed to enable the breakpoint
return LLDB_INVALID_BREAK_ID;
}
void
Process::RemoveOwnerFromBreakpointSite (lldb::user_id_t owner_id, lldb::user_id_t owner_loc_id, BreakpointSiteSP &bp_site_sp)
{
uint32_t num_owners = bp_site_sp->RemoveOwner (owner_id, owner_loc_id);
if (num_owners == 0)
{
DisableBreakpoint(bp_site_sp.get());
m_breakpoint_site_list.RemoveByAddress(bp_site_sp->GetLoadAddress());
}
}
size_t
Process::RemoveBreakpointOpcodesFromBuffer (addr_t bp_addr, size_t size, uint8_t *buf) const
{
size_t bytes_removed = 0;
addr_t intersect_addr;
size_t intersect_size;
size_t opcode_offset;
size_t idx;
BreakpointSiteSP bp;
for (idx = 0; (bp = m_breakpoint_site_list.GetByIndex(idx)) != NULL; ++idx)
{
if (bp->GetType() == BreakpointSite::eSoftware)
{
if (bp->IntersectsRange(bp_addr, size, &intersect_addr, &intersect_size, &opcode_offset))
{
assert(bp_addr <= intersect_addr && intersect_addr < bp_addr + size);
assert(bp_addr < intersect_addr + intersect_size && intersect_addr + intersect_size <= bp_addr + size);
assert(opcode_offset + intersect_size <= bp->GetByteSize());
size_t buf_offset = intersect_addr - bp_addr;
::memcpy(buf + buf_offset, bp->GetSavedOpcodeBytes() + opcode_offset, intersect_size);
}
}
}
return bytes_removed;
}
Error
Process::EnableSoftwareBreakpoint (BreakpointSite *bp_site)
{
Error error;
assert (bp_site != NULL);
Log *log = lldb_private::GetLogIfAnyCategoriesSet (LIBLLDB_LOG_BREAKPOINTS);
const addr_t bp_addr = bp_site->GetLoadAddress();
if (log)
log->Printf ("Process::EnableSoftwareBreakpoint (site_id = %d) addr = 0x%llx", bp_site->GetID(), (uint64_t)bp_addr);
if (bp_site->IsEnabled())
{
if (log)
log->Printf ("Process::EnableSoftwareBreakpoint (site_id = %d) addr = 0x%llx -- already enabled", bp_site->GetID(), (uint64_t)bp_addr);
return error;
}
if (bp_addr == LLDB_INVALID_ADDRESS)
{
error.SetErrorString("BreakpointSite contains an invalid load address.");
return error;
}
// Ask the lldb::Process subclass to fill in the correct software breakpoint
// trap for the breakpoint site
const size_t bp_opcode_size = GetSoftwareBreakpointTrapOpcode(bp_site);
if (bp_opcode_size == 0)
{
error.SetErrorStringWithFormat ("Process::GetSoftwareBreakpointTrapOpcode() returned zero, unable to get breakpoint trap for address 0x%llx.\n", bp_addr);
}
else
{
const uint8_t * const bp_opcode_bytes = bp_site->GetTrapOpcodeBytes();
if (bp_opcode_bytes == NULL)
{
error.SetErrorString ("BreakpointSite doesn't contain a valid breakpoint trap opcode.");
return error;
}
// Save the original opcode by reading it
if (DoReadMemory(bp_addr, bp_site->GetSavedOpcodeBytes(), bp_opcode_size, error) == bp_opcode_size)
{
// Write a software breakpoint in place of the original opcode
if (DoWriteMemory(bp_addr, bp_opcode_bytes, bp_opcode_size, error) == bp_opcode_size)
{
uint8_t verify_bp_opcode_bytes[64];
if (DoReadMemory(bp_addr, verify_bp_opcode_bytes, bp_opcode_size, error) == bp_opcode_size)
{
if (::memcmp(bp_opcode_bytes, verify_bp_opcode_bytes, bp_opcode_size) == 0)
{
bp_site->SetEnabled(true);
bp_site->SetType (BreakpointSite::eSoftware);
if (log)
log->Printf ("Process::EnableSoftwareBreakpoint (site_id = %d) addr = 0x%llx -- SUCCESS",
bp_site->GetID(),
(uint64_t)bp_addr);
}
else
error.SetErrorString("Failed to verify the breakpoint trap in memory.");
}
else
error.SetErrorString("Unable to read memory to verify breakpoint trap.");
}
else
error.SetErrorString("Unable to write breakpoint trap to memory.");
}
else
error.SetErrorString("Unable to read memory at breakpoint address.");
}
if (log)
log->Printf ("Process::EnableSoftwareBreakpoint (site_id = %d) addr = 0x%llx -- FAILED: %s",
bp_site->GetID(),
(uint64_t)bp_addr,
error.AsCString());
return error;
}
Error
Process::DisableSoftwareBreakpoint (BreakpointSite *bp_site)
{
Error error;
assert (bp_site != NULL);
Log *log = lldb_private::GetLogIfAnyCategoriesSet (LIBLLDB_LOG_BREAKPOINTS);
addr_t bp_addr = bp_site->GetLoadAddress();
lldb::user_id_t breakID = bp_site->GetID();
if (log)
log->Printf ("ProcessMacOSX::DisableBreakpoint (breakID = %d) addr = 0x%llx", breakID, (uint64_t)bp_addr);
if (bp_site->IsHardware())
{
error.SetErrorString("Breakpoint site is a hardware breakpoint.");
}
else if (bp_site->IsEnabled())
{
const size_t break_op_size = bp_site->GetByteSize();
const uint8_t * const break_op = bp_site->GetTrapOpcodeBytes();
if (break_op_size > 0)
{
// Clear a software breakoint instruction
uint8_t curr_break_op[8];
assert (break_op_size <= sizeof(curr_break_op));
bool break_op_found = false;
// Read the breakpoint opcode
if (DoReadMemory (bp_addr, curr_break_op, break_op_size, error) == break_op_size)
{
bool verify = false;
// Make sure we have the a breakpoint opcode exists at this address
if (::memcmp (curr_break_op, break_op, break_op_size) == 0)
{
break_op_found = true;
// We found a valid breakpoint opcode at this address, now restore
// the saved opcode.
if (DoWriteMemory (bp_addr, bp_site->GetSavedOpcodeBytes(), break_op_size, error) == break_op_size)
{
verify = true;
}
else
error.SetErrorString("Memory write failed when restoring original opcode.");
}
else
{
error.SetErrorString("Original breakpoint trap is no longer in memory.");
// Set verify to true and so we can check if the original opcode has already been restored
verify = true;
}
if (verify)
{
uint8_t verify_opcode[8];
assert (break_op_size < sizeof(verify_opcode));
// Verify that our original opcode made it back to the inferior
if (DoReadMemory (bp_addr, verify_opcode, break_op_size, error) == break_op_size)
{
// compare the memory we just read with the original opcode
if (::memcmp (bp_site->GetSavedOpcodeBytes(), verify_opcode, break_op_size) == 0)
{
// SUCCESS
bp_site->SetEnabled(false);
if (log)
log->Printf ("Process::DisableSoftwareBreakpoint (site_id = %d) addr = 0x%llx -- SUCCESS", bp_site->GetID(), (uint64_t)bp_addr);
return error;
}
else
{
if (break_op_found)
error.SetErrorString("Failed to restore original opcode.");
}
}
else
error.SetErrorString("Failed to read memory to verify that breakpoint trap was restored.");
}
}
else
error.SetErrorString("Unable to read memory that should contain the breakpoint trap.");
}
}
else
{
if (log)
log->Printf ("Process::DisableSoftwareBreakpoint (site_id = %d) addr = 0x%llx -- already disabled", bp_site->GetID(), (uint64_t)bp_addr);
return error;
}
if (log)
log->Printf ("Process::DisableSoftwareBreakpoint (site_id = %d) addr = 0x%llx -- FAILED: %s",
bp_site->GetID(),
(uint64_t)bp_addr,
error.AsCString());
return error;
}
size_t
Process::ReadMemory (addr_t addr, void *buf, size_t size, Error &error)
{
if (buf == NULL || size == 0)
return 0;
size_t bytes_read = 0;
uint8_t *bytes = (uint8_t *)buf;
while (bytes_read < size)
{
const size_t curr_size = size - bytes_read;
const size_t curr_bytes_read = DoReadMemory (addr + bytes_read,
bytes + bytes_read,
curr_size,
error);
bytes_read += curr_bytes_read;
if (curr_bytes_read == curr_size || curr_bytes_read == 0)
break;
}
// Replace any software breakpoint opcodes that fall into this range back
// into "buf" before we return
if (bytes_read > 0)
RemoveBreakpointOpcodesFromBuffer (addr, bytes_read, (uint8_t *)buf);
return bytes_read;
}
size_t
Process::WriteMemoryPrivate (addr_t addr, const void *buf, size_t size, Error &error)
{
size_t bytes_written = 0;
const uint8_t *bytes = (const uint8_t *)buf;
while (bytes_written < size)
{
const size_t curr_size = size - bytes_written;
const size_t curr_bytes_written = DoWriteMemory (addr + bytes_written,
bytes + bytes_written,
curr_size,
error);
bytes_written += curr_bytes_written;
if (curr_bytes_written == curr_size || curr_bytes_written == 0)
break;
}
return bytes_written;
}
size_t
Process::WriteMemory (addr_t addr, const void *buf, size_t size, Error &error)
{
if (buf == NULL || size == 0)
return 0;
// We need to write any data that would go where any current software traps
// (enabled software breakpoints) any software traps (breakpoints) that we
// may have placed in our tasks memory.
BreakpointSiteList::collection::const_iterator iter = m_breakpoint_site_list.GetMap()->lower_bound (addr);
BreakpointSiteList::collection::const_iterator end = m_breakpoint_site_list.GetMap()->end();
if (iter == end || iter->second->GetLoadAddress() > addr + size)
return DoWriteMemory(addr, buf, size, error);
BreakpointSiteList::collection::const_iterator pos;
size_t bytes_written = 0;
addr_t intersect_addr = 0;
size_t intersect_size = 0;
size_t opcode_offset = 0;
const uint8_t *ubuf = (const uint8_t *)buf;
for (pos = iter; pos != end; ++pos)
{
BreakpointSiteSP bp;
bp = pos->second;
assert(bp->IntersectsRange(addr, size, &intersect_addr, &intersect_size, &opcode_offset));
assert(addr <= intersect_addr && intersect_addr < addr + size);
assert(addr < intersect_addr + intersect_size && intersect_addr + intersect_size <= addr + size);
assert(opcode_offset + intersect_size <= bp->GetByteSize());
// Check for bytes before this breakpoint
const addr_t curr_addr = addr + bytes_written;
if (intersect_addr > curr_addr)
{
// There are some bytes before this breakpoint that we need to
// just write to memory
size_t curr_size = intersect_addr - curr_addr;
size_t curr_bytes_written = WriteMemoryPrivate (curr_addr,
ubuf + bytes_written,
curr_size,
error);
bytes_written += curr_bytes_written;
if (curr_bytes_written != curr_size)
{
// We weren't able to write all of the requested bytes, we
// are done looping and will return the number of bytes that
// we have written so far.
break;
}
}
// Now write any bytes that would cover up any software breakpoints
// directly into the breakpoint opcode buffer
::memcpy(bp->GetSavedOpcodeBytes() + opcode_offset, ubuf + bytes_written, intersect_size);
bytes_written += intersect_size;
}
// Write any remaining bytes after the last breakpoint if we have any left
if (bytes_written < size)
bytes_written += WriteMemoryPrivate (addr + bytes_written,
ubuf + bytes_written,
size - bytes_written,
error);
return bytes_written;
}
addr_t
Process::AllocateMemory(size_t size, uint32_t permissions, Error &error)
{
// Fixme: we should track the blocks we've allocated, and clean them up...
// We could even do our own allocator here if that ends up being more efficient.
return DoAllocateMemory (size, permissions, error);
}
Error
Process::DeallocateMemory (addr_t ptr)
{
return DoDeallocateMemory (ptr);
}
Error
Process::EnableWatchpoint (WatchpointLocation *watchpoint)
{
Error error;
error.SetErrorString("watchpoints are not supported");
return error;
}
Error
Process::DisableWatchpoint (WatchpointLocation *watchpoint)
{
Error error;
error.SetErrorString("watchpoints are not supported");
return error;
}
StateType
Process::WaitForProcessStopPrivate (const TimeValue *timeout, EventSP &event_sp)
{
StateType state;
// Now wait for the process to launch and return control to us, and then
// call DidLaunch:
while (1)
{
// FIXME: Might want to put a timeout in here:
state = WaitForStateChangedEventsPrivate (NULL, event_sp);
if (state == eStateStopped || state == eStateCrashed || state == eStateExited)
break;
else
HandlePrivateEvent (event_sp);
}
return state;
}
Error
Process::Launch
(
char const *argv[],
char const *envp[],
uint32_t launch_flags,
const char *stdin_path,
const char *stdout_path,
const char *stderr_path
)
{
Error error;
m_target_triple.Clear();
m_abi_sp.reset();
Module *exe_module = m_target.GetExecutableModule().get();
if (exe_module)
{
char exec_file_path[PATH_MAX];
exe_module->GetFileSpec().GetPath(exec_file_path, sizeof(exec_file_path));
if (exe_module->GetFileSpec().Exists())
{
error = WillLaunch (exe_module);
if (error.Success())
{
SetPublicState (eStateLaunching);
// The args coming in should not contain the application name, the
// lldb_private::Process class will add this in case the executable
// gets resolved to a different file than was given on the command
// line (like when an applicaiton bundle is specified and will
// resolve to the contained exectuable file, or the file given was
// a symlink or other file system link that resolves to a different
// file).
// Get the resolved exectuable path
// Make a new argument vector
std::vector<const char *> exec_path_plus_argv;
// Append the resolved executable path
exec_path_plus_argv.push_back (exec_file_path);
// Push all args if there are any
if (argv)
{
for (int i = 0; argv[i]; ++i)
exec_path_plus_argv.push_back(argv[i]);
}
// Push a NULL to terminate the args.
exec_path_plus_argv.push_back(NULL);
// Now launch using these arguments.
error = DoLaunch (exe_module,
exec_path_plus_argv.empty() ? NULL : &exec_path_plus_argv.front(),
envp,
launch_flags,
stdin_path,
stdout_path,
stderr_path);
if (error.Fail())
{
if (GetID() != LLDB_INVALID_PROCESS_ID)
{
SetID (LLDB_INVALID_PROCESS_ID);
const char *error_string = error.AsCString();
if (error_string == NULL)
error_string = "launch failed";
SetExitStatus (-1, error_string);
}
}
else
{
EventSP event_sp;
StateType state = WaitForProcessStopPrivate(NULL, event_sp);
if (state == eStateStopped || state == eStateCrashed)
{
DidLaunch ();
// This delays passing the stopped event to listeners till DidLaunch gets
// a chance to complete...
HandlePrivateEvent (event_sp);
StartPrivateStateThread ();
}
else if (state == eStateExited)
{
// We exited while trying to launch somehow. Don't call DidLaunch as that's
// not likely to work, and return an invalid pid.
HandlePrivateEvent (event_sp);
}
}
}
}
else
{
error.SetErrorStringWithFormat("File doesn't exist: '%s'.\n", exec_file_path);
}
}
return error;
}
Error
Process::CompleteAttach ()
{
Error error;
if (GetID() == LLDB_INVALID_PROCESS_ID)
{
error.SetErrorString("no process");
}
EventSP event_sp;
StateType state = WaitForProcessStopPrivate(NULL, event_sp);
if (state == eStateStopped || state == eStateCrashed)
{
DidAttach ();
// Figure out which one is the executable, and set that in our target:
ModuleList &modules = GetTarget().GetImages();
size_t num_modules = modules.GetSize();
for (int i = 0; i < num_modules; i++)
{
ModuleSP module_sp = modules.GetModuleAtIndex(i);
if (module_sp->IsExecutable())
{
ModuleSP exec_module = GetTarget().GetExecutableModule();
if (!exec_module || exec_module != module_sp)
{
GetTarget().SetExecutableModule (module_sp, false);
}
break;
}
}
// This delays passing the stopped event to listeners till DidLaunch gets
// a chance to complete...
HandlePrivateEvent(event_sp);
StartPrivateStateThread();
}
else
{
// We exited while trying to launch somehow. Don't call DidLaunch as that's
// not likely to work, and return an invalid pid.
if (state == eStateExited)
HandlePrivateEvent (event_sp);
error.SetErrorStringWithFormat("invalid state after attach: %s",
lldb_private::StateAsCString(state));
}
return error;
}
Error
Process::Attach (lldb::pid_t attach_pid)
{
m_target_triple.Clear();
m_abi_sp.reset();
// Find the process and its architecture. Make sure it matches the architecture
// of the current Target, and if not adjust it.
ArchSpec attach_spec = GetArchSpecForExistingProcess (attach_pid);
if (attach_spec != GetTarget().GetArchitecture())
{
// Set the architecture on the target.
GetTarget().SetArchitecture(attach_spec);
}
Error error (WillAttachToProcessWithID(attach_pid));
if (error.Success())
{
SetPublicState (eStateAttaching);
error = DoAttachToProcessWithID (attach_pid);
if (error.Success())
{
error = CompleteAttach();
}
else
{
if (GetID() != LLDB_INVALID_PROCESS_ID)
{
SetID (LLDB_INVALID_PROCESS_ID);
const char *error_string = error.AsCString();
if (error_string == NULL)
error_string = "attach failed";
SetExitStatus(-1, error_string);
}
}
}
return error;
}
Error
Process::Attach (const char *process_name, bool wait_for_launch)
{
m_target_triple.Clear();
m_abi_sp.reset();
// Find the process and its architecture. Make sure it matches the architecture
// of the current Target, and if not adjust it.
if (!wait_for_launch)
{
ArchSpec attach_spec = GetArchSpecForExistingProcess (process_name);
if (attach_spec.IsValid() && attach_spec != GetTarget().GetArchitecture())
{
// Set the architecture on the target.
GetTarget().SetArchitecture(attach_spec);
}
}
Error error (WillAttachToProcessWithName(process_name, wait_for_launch));
if (error.Success())
{
SetPublicState (eStateAttaching);
error = DoAttachToProcessWithName (process_name, wait_for_launch);
if (error.Fail())
{
if (GetID() != LLDB_INVALID_PROCESS_ID)
{
SetID (LLDB_INVALID_PROCESS_ID);
const char *error_string = error.AsCString();
if (error_string == NULL)
error_string = "attach failed";
SetExitStatus(-1, error_string);
}
}
else
{
error = CompleteAttach();
}
}
return error;
}
Error
Process::Resume ()
{
Log *log = lldb_private::GetLogIfAllCategoriesSet (LIBLLDB_LOG_PROCESS);
if (log)
log->Printf("Process::Resume() m_stop_id = %u", m_stop_id);
Error error (WillResume());
// Tell the process it is about to resume before the thread list
if (error.Success())
{
// Now let the thread list know we are about to resume to it
// can let all of our threads know that they are about to be
// resumed. Threads will each be called with
// Thread::WillResume(StateType) where StateType contains the state
// that they are supposed to have when the process is resumed
// (suspended/running/stepping). Threads should also check
// their resume signal in lldb::Thread::GetResumeSignal()
// to see if they are suppoed to start back up with a signal.
if (m_thread_list.WillResume())
{
error = DoResume();
if (error.Success())
{
DidResume();
m_thread_list.DidResume();
}
}
else
{
error.SetErrorStringWithFormat("thread list returned flase after WillResume");
}
}
return error;
}
Error
Process::Halt ()
{
Error error (WillHalt());
if (error.Success())
{
error = DoHalt();
if (error.Success())
DidHalt();
}
return error;
}
Error
Process::Detach ()
{
Error error (WillDetach());
if (error.Success())
{
DisableAllBreakpointSites();
error = DoDetach();
if (error.Success())
{
DidDetach();
StopPrivateStateThread();
}
}
return error;
}
Error
Process::Destroy ()
{
Error error (WillDestroy());
if (error.Success())
{
DisableAllBreakpointSites();
error = DoDestroy();
if (error.Success())
{
DidDestroy();
StopPrivateStateThread();
}
}
return error;
}
Error
Process::Signal (int signal)
{
Error error (WillSignal());
if (error.Success())
{
error = DoSignal(signal);
if (error.Success())
DidSignal();
}
return error;
}
UnixSignals &
Process::GetUnixSignals ()
{
return m_unix_signals;
}
Target &
Process::GetTarget ()
{
return m_target;
}
const Target &
Process::GetTarget () const
{
return m_target;
}
uint32_t
Process::GetAddressByteSize()
{
return m_target.GetArchitecture().GetAddressByteSize();
}
bool
Process::ShouldBroadcastEvent (Event *event_ptr)
{
const StateType state = Process::ProcessEventData::GetStateFromEvent (event_ptr);
bool return_value = true;
Log *log = lldb_private::GetLogIfAllCategoriesSet(LIBLLDB_LOG_EVENTS);
switch (state)
{
case eStateAttaching:
case eStateLaunching:
case eStateDetached:
case eStateExited:
case eStateUnloaded:
// These events indicate changes in the state of the debugging session, always report them.
return_value = true;
break;
case eStateInvalid:
// We stopped for no apparent reason, don't report it.
return_value = false;
break;
case eStateRunning:
case eStateStepping:
// If we've started the target running, we handle the cases where we
// are already running and where there is a transition from stopped to
// running differently.
// running -> running: Automatically suppress extra running events
// stopped -> running: Report except when there is one or more no votes
// and no yes votes.
SynchronouslyNotifyStateChanged (state);
switch (m_public_state.GetValue())
{
case eStateRunning:
case eStateStepping:
// We always suppress multiple runnings with no PUBLIC stop in between.
return_value = false;
break;
default:
// TODO: make this work correctly. For now always report
// run if we aren't running so we don't miss any runnning
// events. If I run the lldb/test/thread/a.out file and
// break at main.cpp:58, run and hit the breakpoints on
// multiple threads, then somehow during the stepping over
// of all breakpoints no run gets reported.
return_value = true;
// This is a transition from stop to run.
switch (m_thread_list.ShouldReportRun (event_ptr))
{
case eVoteYes:
case eVoteNoOpinion:
return_value = true;
break;
case eVoteNo:
return_value = false;
break;
}
break;
}
break;
case eStateStopped:
case eStateCrashed:
case eStateSuspended:
{
// We've stopped. First see if we're going to restart the target.
// If we are going to stop, then we always broadcast the event.
// If we aren't going to stop, let the thread plans decide if we're going to report this event.
// If no thread has an opinion, we don't report it.
if (state != eStateInvalid)
{
RefreshStateAfterStop ();
if (m_thread_list.ShouldStop (event_ptr) == false)
{
switch (m_thread_list.ShouldReportStop (event_ptr))
{
case eVoteYes:
Process::ProcessEventData::SetRestartedInEvent (event_ptr, true);
// Intentional fall-through here.
case eVoteNoOpinion:
case eVoteNo:
return_value = false;
break;
}
if (log)
log->Printf ("Process::ShouldBroadcastEvent (%p) Restarting process", event_ptr, StateAsCString(state));
Resume ();
}
else
{
return_value = true;
SynchronouslyNotifyStateChanged (state);
}
}
}
}
if (log)
log->Printf ("Process::ShouldBroadcastEvent (%p) => %s", event_ptr, StateAsCString(state), return_value ? "YES" : "NO");
return return_value;
}
//------------------------------------------------------------------
// Thread Queries
//------------------------------------------------------------------
ThreadList &
Process::GetThreadList ()
{
return m_thread_list;
}
const ThreadList &
Process::GetThreadList () const
{
return m_thread_list;
}
bool
Process::StartPrivateStateThread ()
{
Log *log = lldb_private::GetLogIfAllCategoriesSet(LIBLLDB_LOG_EVENTS);
if (log)
log->Printf ("Process::%s ( )", __FUNCTION__);
// Create a thread that watches our internal state and controls which
// events make it to clients (into the DCProcess event queue).
m_private_state_thread = Host::ThreadCreate ("<lldb.process.internal-state>", Process::PrivateStateThread, this, NULL);
return m_private_state_thread != LLDB_INVALID_HOST_THREAD;
}
void
Process::PausePrivateStateThread ()
{
ControlPrivateStateThread (eBroadcastInternalStateControlPause);
}
void
Process::ResumePrivateStateThread ()
{
ControlPrivateStateThread (eBroadcastInternalStateControlResume);
}
void
Process::StopPrivateStateThread ()
{
ControlPrivateStateThread (eBroadcastInternalStateControlStop);
}
void
Process::ControlPrivateStateThread (uint32_t signal)
{
Log *log = lldb_private::GetLogIfAllCategoriesSet(LIBLLDB_LOG_EVENTS);
assert (signal == eBroadcastInternalStateControlStop ||
signal == eBroadcastInternalStateControlPause ||
signal == eBroadcastInternalStateControlResume);
if (log)
log->Printf ("Process::%s ( ) - signal: %d", __FUNCTION__, signal);
// Signal the private state thread
if (m_private_state_thread != LLDB_INVALID_HOST_THREAD)
{
TimeValue timeout_time;
bool timed_out;
m_private_state_control_broadcaster.BroadcastEvent (signal, NULL);
timeout_time = TimeValue::Now();
timeout_time.OffsetWithSeconds(2);
m_private_state_control_wait.WaitForValueEqualTo (true, &timeout_time, &timed_out);
m_private_state_control_wait.SetValue (false, eBroadcastNever);
if (signal == eBroadcastInternalStateControlStop)
{
if (timed_out)
Host::ThreadCancel (m_private_state_thread, NULL);
thread_result_t result = NULL;
Host::ThreadJoin (m_private_state_thread, &result, NULL);
m_private_state_thread = LLDB_INVALID_HOST_THREAD;
}
}
}
void
Process::HandlePrivateEvent (EventSP &event_sp)
{
Log *log = lldb_private::GetLogIfAllCategoriesSet (LIBLLDB_LOG_PROCESS);
const StateType internal_state = Process::ProcessEventData::GetStateFromEvent(event_sp.get());
// See if we should broadcast this state to external clients?
const bool should_broadcast = ShouldBroadcastEvent (event_sp.get());
if (log)
log->Printf ("Process::%s (arg = %p, pid = %i) got event '%s' broadcast = %s", __FUNCTION__, this, GetID(), StateAsCString(internal_state), should_broadcast ? "yes" : "no");
if (should_broadcast)
{
if (log)
{
log->Printf ("\tChanging public state from: %s to %s", StateAsCString(GetState ()), StateAsCString (internal_state));
}
Process::ProcessEventData::SetUpdateStateOnRemoval(event_sp.get());
BroadcastEvent (event_sp);
}
else
{
if (log)
{
log->Printf ("\tNot changing public state with event: %s", StateAsCString (internal_state));
}
}
}
void *
Process::PrivateStateThread (void *arg)
{
Process *proc = static_cast<Process*> (arg);
void *result = proc->RunPrivateStateThread ();
return result;
}
void *
Process::RunPrivateStateThread ()
{
bool control_only = false;
m_private_state_control_wait.SetValue (false, eBroadcastNever);
Log *log = lldb_private::GetLogIfAllCategoriesSet (LIBLLDB_LOG_PROCESS);
if (log)
log->Printf ("Process::%s (arg = %p, pid = %i) thread starting...", __FUNCTION__, this, GetID());
bool exit_now = false;
while (!exit_now)
{
EventSP event_sp;
WaitForEventsPrivate (NULL, event_sp, control_only);
if (event_sp->BroadcasterIs(&m_private_state_control_broadcaster))
{
switch (event_sp->GetType())
{
case eBroadcastInternalStateControlStop:
exit_now = true;
continue; // Go to next loop iteration so we exit without
break; // doing any internal state managment below
case eBroadcastInternalStateControlPause:
control_only = true;
break;
case eBroadcastInternalStateControlResume:
control_only = false;
break;
}
m_private_state_control_wait.SetValue (true, eBroadcastAlways);
}
const StateType internal_state = Process::ProcessEventData::GetStateFromEvent(event_sp.get());
if (internal_state != eStateInvalid)
{
HandlePrivateEvent (event_sp);
}
if (internal_state == eStateInvalid ||
internal_state == eStateExited ||
internal_state == eStateDetached )
break;
}
// Verify log is still enabled before attempting to write to it...
log = lldb_private::GetLogIfAllCategoriesSet (LIBLLDB_LOG_PROCESS);
if (log)
log->Printf ("Process::%s (arg = %p, pid = %i) thread exiting...", __FUNCTION__, this, GetID());
m_private_state_thread = LLDB_INVALID_HOST_THREAD;
return NULL;
}
//------------------------------------------------------------------
// Process Event Data
//------------------------------------------------------------------
Process::ProcessEventData::ProcessEventData () :
EventData (),
m_process_sp (),
m_state (eStateInvalid),
m_restarted (false),
m_update_state (false)
{
}
Process::ProcessEventData::ProcessEventData (const ProcessSP &process_sp, StateType state) :
EventData (),
m_process_sp (process_sp),
m_state (state),
m_restarted (false),
m_update_state (false)
{
}
Process::ProcessEventData::~ProcessEventData()
{
}
const ConstString &
Process::ProcessEventData::GetFlavorString ()
{
static ConstString g_flavor ("Process::ProcessEventData");
return g_flavor;
}
const ConstString &
Process::ProcessEventData::GetFlavor () const
{
return ProcessEventData::GetFlavorString ();
}
const ProcessSP &
Process::ProcessEventData::GetProcessSP () const
{
return m_process_sp;
}
StateType
Process::ProcessEventData::GetState () const
{
return m_state;
}
bool
Process::ProcessEventData::GetRestarted () const
{
return m_restarted;
}
void
Process::ProcessEventData::SetRestarted (bool new_value)
{
m_restarted = new_value;
}
void
Process::ProcessEventData::DoOnRemoval (Event *event_ptr)
{
// This function gets called twice for each event, once when the event gets pulled
// off of the private process event queue, and once when it gets pulled off of
// the public event queue. m_update_state is used to distinguish these
// two cases; it is false when we're just pulling it off for private handling,
// and we don't want to do the breakpoint command handling then.
if (!m_update_state)
return;
m_process_sp->SetPublicState (m_state);
// If we're stopped and haven't restarted, then do the breakpoint commands here:
if (m_state == eStateStopped && ! m_restarted)
{
int num_threads = m_process_sp->GetThreadList().GetSize();
int idx;
for (idx = 0; idx < num_threads; ++idx)
{
lldb::ThreadSP thread_sp = m_process_sp->GetThreadList().GetThreadAtIndex(idx);
StopInfoSP stop_info_sp = thread_sp->GetStopInfo ();
if (stop_info_sp)
{
stop_info_sp->PerformAction(event_ptr);
}
}
// The stop action might restart the target. If it does, then we want to mark that in the
// event so that whoever is receiving it will know to wait for the running event and reflect
// that state appropriately.
if (m_process_sp->GetPrivateState() == eStateRunning)
SetRestarted(true);
}
}
void
Process::ProcessEventData::Dump (Stream *s) const
{
if (m_process_sp)
s->Printf(" process = %p (pid = %u), ", m_process_sp.get(), m_process_sp->GetID());
s->Printf("state = %s", StateAsCString(GetState()));;
}
const Process::ProcessEventData *
Process::ProcessEventData::GetEventDataFromEvent (const Event *event_ptr)
{
if (event_ptr)
{
const EventData *event_data = event_ptr->GetData();
if (event_data && event_data->GetFlavor() == ProcessEventData::GetFlavorString())
return static_cast <const ProcessEventData *> (event_ptr->GetData());
}
return NULL;
}
ProcessSP
Process::ProcessEventData::GetProcessFromEvent (const Event *event_ptr)
{
ProcessSP process_sp;
const ProcessEventData *data = GetEventDataFromEvent (event_ptr);
if (data)
process_sp = data->GetProcessSP();
return process_sp;
}
StateType
Process::ProcessEventData::GetStateFromEvent (const Event *event_ptr)
{
const ProcessEventData *data = GetEventDataFromEvent (event_ptr);
if (data == NULL)
return eStateInvalid;
else
return data->GetState();
}
bool
Process::ProcessEventData::GetRestartedFromEvent (const Event *event_ptr)
{
const ProcessEventData *data = GetEventDataFromEvent (event_ptr);
if (data == NULL)
return false;
else
return data->GetRestarted();
}
void
Process::ProcessEventData::SetRestartedInEvent (Event *event_ptr, bool new_value)
{
ProcessEventData *data = const_cast<ProcessEventData *>(GetEventDataFromEvent (event_ptr));
if (data != NULL)
data->SetRestarted(new_value);
}
bool
Process::ProcessEventData::SetUpdateStateOnRemoval (Event *event_ptr)
{
ProcessEventData *data = const_cast<ProcessEventData *>(GetEventDataFromEvent (event_ptr));
if (data)
{
data->SetUpdateStateOnRemoval();
return true;
}
return false;
}
void
Process::ProcessEventData::SetUpdateStateOnRemoval()
{
m_update_state = true;
}
Target *
Process::CalculateTarget ()
{
return &m_target;
}
Process *
Process::CalculateProcess ()
{
return this;
}
Thread *
Process::CalculateThread ()
{
return NULL;
}
StackFrame *
Process::CalculateStackFrame ()
{
return NULL;
}
void
Process::CalculateExecutionContext (ExecutionContext &exe_ctx)
{
exe_ctx.target = &m_target;
exe_ctx.process = this;
exe_ctx.thread = NULL;
exe_ctx.frame = NULL;
}
lldb::ProcessSP
Process::GetSP ()
{
return GetTarget().GetProcessSP();
}
ClangPersistentVariables &
Process::GetPersistentVariables()
{
return m_persistent_vars;
}
uint32_t
Process::ListProcessesMatchingName (const char *name, StringList &matches, std::vector<lldb::pid_t> &pids)
{
return 0;
}
ArchSpec
Process::GetArchSpecForExistingProcess (lldb::pid_t pid)
{
return Host::GetArchSpecForExistingProcess (pid);
}
ArchSpec
Process::GetArchSpecForExistingProcess (const char *process_name)
{
return Host::GetArchSpecForExistingProcess (process_name);
}
lldb::UserSettingsControllerSP
Process::GetSettingsController (bool finish)
{
static UserSettingsControllerSP g_settings_controller (new SettingsController);
static bool initialized = false;
if (!initialized)
{
initialized = UserSettingsController::InitializeSettingsController (g_settings_controller,
Process::SettingsController::global_settings_table,
Process::SettingsController::instance_settings_table);
}
if (finish)
{
UserSettingsController::FinalizeSettingsController (g_settings_controller);
g_settings_controller.reset();
initialized = false;
}
return g_settings_controller;
}
void
Process::UpdateInstanceName ()
{
ModuleSP module_sp = GetTarget().GetExecutableModule();
if (module_sp)
{
StreamString sstr;
sstr.Printf ("%s", module_sp->GetFileSpec().GetFilename().AsCString());
Process::GetSettingsController()->RenameInstanceSettings (GetInstanceName().AsCString(),
sstr.GetData());
}
}
//--------------------------------------------------------------
// class Process::SettingsController
//--------------------------------------------------------------
Process::SettingsController::SettingsController () :
UserSettingsController ("process", Target::GetSettingsController())
{
m_default_settings.reset (new ProcessInstanceSettings (*this, false,
InstanceSettings::GetDefaultName().AsCString()));
}
Process::SettingsController::~SettingsController ()
{
}
lldb::InstanceSettingsSP
Process::SettingsController::CreateInstanceSettings (const char *instance_name)
{
ProcessInstanceSettings *new_settings = new ProcessInstanceSettings (*(Process::GetSettingsController().get()),
false, instance_name);
lldb::InstanceSettingsSP new_settings_sp (new_settings);
return new_settings_sp;
}
//--------------------------------------------------------------
// class ProcessInstanceSettings
//--------------------------------------------------------------
ProcessInstanceSettings::ProcessInstanceSettings (UserSettingsController &owner, bool live_instance,
const char *name) :
InstanceSettings (owner, (name == NULL ? InstanceSettings::InvalidName().AsCString() : name), live_instance),
m_run_args (),
m_env_vars (),
m_input_path (),
m_output_path (),
m_error_path (),
m_plugin (),
m_disable_aslr (true)
{
// CopyInstanceSettings is a pure virtual function in InstanceSettings; it therefore cannot be called
// until the vtables for ProcessInstanceSettings are properly set up, i.e. AFTER all the initializers.
// For this reason it has to be called here, rather than in the initializer or in the parent constructor.
// This is true for CreateInstanceName() too.
if (GetInstanceName () == InstanceSettings::InvalidName())
{
ChangeInstanceName (std::string (CreateInstanceName().AsCString()));
m_owner.RegisterInstanceSettings (this);
}
if (live_instance)
{
const lldb::InstanceSettingsSP &pending_settings = m_owner.FindPendingSettings (m_instance_name);
CopyInstanceSettings (pending_settings,false);
//m_owner.RemovePendingSettings (m_instance_name);
}
}
ProcessInstanceSettings::ProcessInstanceSettings (const ProcessInstanceSettings &rhs) :
InstanceSettings (*(Process::GetSettingsController().get()), CreateInstanceName().AsCString()),
m_run_args (rhs.m_run_args),
m_env_vars (rhs.m_env_vars),
m_input_path (rhs.m_input_path),
m_output_path (rhs.m_output_path),
m_error_path (rhs.m_error_path),
m_plugin (rhs.m_plugin),
m_disable_aslr (rhs.m_disable_aslr)
{
if (m_instance_name != InstanceSettings::GetDefaultName())
{
const lldb::InstanceSettingsSP &pending_settings = m_owner.FindPendingSettings (m_instance_name);
CopyInstanceSettings (pending_settings,false);
m_owner.RemovePendingSettings (m_instance_name);
}
}
ProcessInstanceSettings::~ProcessInstanceSettings ()
{
}
ProcessInstanceSettings&
ProcessInstanceSettings::operator= (const ProcessInstanceSettings &rhs)
{
if (this != &rhs)
{
m_run_args = rhs.m_run_args;
m_env_vars = rhs.m_env_vars;
m_input_path = rhs.m_input_path;
m_output_path = rhs.m_output_path;
m_error_path = rhs.m_error_path;
m_plugin = rhs.m_plugin;
m_disable_aslr = rhs.m_disable_aslr;
}
return *this;
}
void
ProcessInstanceSettings::UpdateInstanceSettingsVariable (const ConstString &var_name,
const char *index_value,
const char *value,
const ConstString &instance_name,
const SettingEntry &entry,
lldb::VarSetOperationType op,
Error &err,
bool pending)
{
if (var_name == RunArgsVarName())
UserSettingsController::UpdateStringArrayVariable (op, index_value, m_run_args, value, err);
else if (var_name == EnvVarsVarName())
UserSettingsController::UpdateDictionaryVariable (op, index_value, m_env_vars, value, err);
else if (var_name == InputPathVarName())
UserSettingsController::UpdateStringVariable (op, m_input_path, value, err);
else if (var_name == OutputPathVarName())
UserSettingsController::UpdateStringVariable (op, m_output_path, value, err);
else if (var_name == ErrorPathVarName())
UserSettingsController::UpdateStringVariable (op, m_error_path, value, err);
else if (var_name == PluginVarName())
UserSettingsController::UpdateEnumVariable (entry.enum_values, (int *) &m_plugin, value, err);
else if (var_name == DisableASLRVarName())
UserSettingsController::UpdateBooleanVariable (op, m_disable_aslr, value, err);
}
void
ProcessInstanceSettings::CopyInstanceSettings (const lldb::InstanceSettingsSP &new_settings,
bool pending)
{
if (new_settings.get() == NULL)
return;
ProcessInstanceSettings *new_process_settings = (ProcessInstanceSettings *) new_settings.get();
m_run_args = new_process_settings->m_run_args;
m_env_vars = new_process_settings->m_env_vars;
m_input_path = new_process_settings->m_input_path;
m_output_path = new_process_settings->m_output_path;
m_error_path = new_process_settings->m_error_path;
m_plugin = new_process_settings->m_plugin;
m_disable_aslr = new_process_settings->m_disable_aslr;
}
bool
ProcessInstanceSettings::GetInstanceSettingsValue (const SettingEntry &entry,
const ConstString &var_name,
StringList &value,
Error *err)
{
if (var_name == RunArgsVarName())
{
if (m_run_args.GetArgumentCount() > 0)
{
for (int i = 0; i < m_run_args.GetArgumentCount(); ++i)
value.AppendString (m_run_args.GetArgumentAtIndex (i));
}
}
else if (var_name == EnvVarsVarName())
{
if (m_env_vars.size() > 0)
{
std::map<std::string, std::string>::iterator pos;
for (pos = m_env_vars.begin(); pos != m_env_vars.end(); ++pos)
{
StreamString value_str;
value_str.Printf ("%s=%s", pos->first.c_str(), pos->second.c_str());
value.AppendString (value_str.GetData());
}
}
}
else if (var_name == InputPathVarName())
{
value.AppendString (m_input_path.c_str());
}
else if (var_name == OutputPathVarName())
{
value.AppendString (m_output_path.c_str());
}
else if (var_name == ErrorPathVarName())
{
value.AppendString (m_error_path.c_str());
}
else if (var_name == PluginVarName())
{
value.AppendString (UserSettingsController::EnumToString (entry.enum_values, (int) m_plugin));
}
else if (var_name == DisableASLRVarName())
{
if (m_disable_aslr)
value.AppendString ("true");
else
value.AppendString ("false");
}
else
{
if (err)
err->SetErrorStringWithFormat ("unrecognized variable name '%s'", var_name.AsCString());
return false;
}
return true;
}
const ConstString
ProcessInstanceSettings::CreateInstanceName ()
{
static int instance_count = 1;
StreamString sstr;
sstr.Printf ("process_%d", instance_count);
++instance_count;
const ConstString ret_val (sstr.GetData());
return ret_val;
}
const ConstString &
ProcessInstanceSettings::RunArgsVarName ()
{
static ConstString run_args_var_name ("run-args");
return run_args_var_name;
}
const ConstString &
ProcessInstanceSettings::EnvVarsVarName ()
{
static ConstString env_vars_var_name ("env-vars");
return env_vars_var_name;
}
const ConstString &
ProcessInstanceSettings::InputPathVarName ()
{
static ConstString input_path_var_name ("input-path");
return input_path_var_name;
}
const ConstString &
ProcessInstanceSettings::OutputPathVarName ()
{
static ConstString output_path_var_name ("output-path");
return output_path_var_name;
}
const ConstString &
ProcessInstanceSettings::ErrorPathVarName ()
{
static ConstString error_path_var_name ("error-path");
return error_path_var_name;
}
const ConstString &
ProcessInstanceSettings::PluginVarName ()
{
static ConstString plugin_var_name ("plugin");
return plugin_var_name;
}
const ConstString &
ProcessInstanceSettings::DisableASLRVarName ()
{
static ConstString disable_aslr_var_name ("disable-aslr");
return disable_aslr_var_name;
}
//--------------------------------------------------
// SettingsController Variable Tables
//--------------------------------------------------
SettingEntry
Process::SettingsController::global_settings_table[] =
{
//{ "var-name", var-type , "default", enum-table, init'd, hidden, "help-text"},
{ NULL, eSetVarTypeNone, NULL, NULL, 0, 0, NULL }
};
lldb::OptionEnumValueElement
Process::SettingsController::g_plugins[] =
{
{ eMacosx, "process.macosx", "Use the native MacOSX debugger plugin" },
{ eRemoteDebugger, "process.gdb-remote" , "Use the GDB Remote protocol based debugger plugin" },
{ 0, NULL, NULL }
};
SettingEntry
Process::SettingsController::instance_settings_table[] =
{
//{ "var-name", var-type, "default", enum-table, init'd, hidden, "help-text"},
{ "run-args", eSetVarTypeArray, NULL, NULL, false, false, "A list containing all the arguments to be passed to the executable when it is run." },
{ "env-vars", eSetVarTypeDictionary, NULL, NULL, false, false, "A list of all the environment variables to be passed to the executable's environment, and their values." },
{ "input-path", eSetVarTypeString, "/dev/stdin", NULL, false, false, "The file/path to be used by the executable program for reading its input." },
{ "output-path", eSetVarTypeString, "/dev/stdout", NULL, false, false, "The file/path to be used by the executable program for writing its output." },
{ "error-path", eSetVarTypeString, "/dev/stderr", NULL, false, false, "The file/path to be used by the executable program for writings its error messages." },
{ "plugin", eSetVarTypeEnum, NULL , g_plugins, false, false, "The plugin to be used to run the process." },
{ "disable-aslr", eSetVarTypeBool, "true", NULL, false, false, "Disable Address Space Layout Randomization (ASLR)" },
{ NULL, eSetVarTypeNone, NULL, NULL, 0, 0, NULL }
};
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