void
BreakpointManager::_UpdateImageBreakpoints(Image* image, bool removeOnly)
{
AutoLocker<BLocker> installLocker(fLock);
AutoLocker<Team> teamLocker(fTeam);
// remove obsolete user breakpoint instances
BObjectList<Breakpoint> breakpointsToUpdate;
for (UserBreakpointList::ConstIterator it
= fTeam->UserBreakpoints().GetIterator();
UserBreakpoint* userBreakpoint = it.Next();) {
int32 instanceCount = userBreakpoint->CountInstances();
for (int32 i = instanceCount - 1; i >= 0; i--) {
UserBreakpointInstance* instance = userBreakpoint->InstanceAt(i);
Breakpoint* breakpoint = instance->GetBreakpoint();
if (breakpoint == NULL || breakpoint->GetImage() != image)
continue;
userBreakpoint->RemoveInstanceAt(i);
breakpoint->RemoveUserBreakpoint(instance);
if (!breakpointsToUpdate.AddItem(breakpoint)) {
_UpdateBreakpointInstallation(breakpoint);
if (breakpoint->IsUnused())
fTeam->RemoveBreakpoint(breakpoint);
}
delete instance;
}
}
// update breakpoints
teamLocker.Unlock();
for (int32 i = 0; Breakpoint* breakpoint = breakpointsToUpdate.ItemAt(i);
i++) {
_UpdateBreakpointInstallation(breakpoint);
}
teamLocker.Lock();
for (int32 i = 0; Breakpoint* breakpoint = breakpointsToUpdate.ItemAt(i);
i++) {
if (breakpoint->IsUnused())
fTeam->RemoveBreakpoint(breakpoint);
}
// add breakpoint instances for function instances in the image (if we have
// an image debug info)
BObjectList<UserBreakpointInstance> newInstances;
ImageDebugInfo* imageDebugInfo = image->GetImageDebugInfo();
if (imageDebugInfo == NULL)
return;
for (UserBreakpointList::ConstIterator it
= fTeam->UserBreakpoints().GetIterator();
UserBreakpoint* userBreakpoint = it.Next();) {
// get the function
Function* function = fTeam->FunctionByID(
userBreakpoint->Location().GetFunctionID());
if (function == NULL)
continue;
const SourceLocation& sourceLocation
= userBreakpoint->Location().GetSourceLocation();
target_addr_t relativeAddress
= userBreakpoint->Location().RelativeAddress();
// iterate through the function instances
for (FunctionInstanceList::ConstIterator it
= function->Instances().GetIterator();
FunctionInstance* functionInstance = it.Next();) {
if (functionInstance->GetImageDebugInfo() != imageDebugInfo)
continue;
// get the breakpoint address for the instance
target_addr_t instanceAddress = 0;
if (functionInstance->SourceFile() != NULL) {
// We have a source file, so get the address for the source
// location.
Statement* statement = NULL;
FunctionDebugInfo* functionDebugInfo
= functionInstance->GetFunctionDebugInfo();
functionDebugInfo->GetSpecificImageDebugInfo()
->GetStatementAtSourceLocation(functionDebugInfo,
sourceLocation, statement);
if (statement != NULL) {
instanceAddress = statement->CoveringAddressRange().Start();
// TODO: What about BreakpointAllowed()?
statement->ReleaseReference();
// TODO: Make sure we do hit the function in question!
}
}
if (instanceAddress == 0) {
// No source file (or we failed getting the statement), so try
// to use the same relative address.
if (relativeAddress > functionInstance->Size())
continue;
instanceAddress = functionInstance->Address() + relativeAddress;
// TODO: Make sure it does at least hit an instruction!
}
// create the user breakpoint instance
UserBreakpointInstance* instance = new(std::nothrow)
UserBreakpointInstance(userBreakpoint, instanceAddress);
if (instance == NULL || !newInstances.AddItem(instance)) {
delete instance;
continue;
}
if (!userBreakpoint->AddInstance(instance)) {
newInstances.RemoveItemAt(newInstances.CountItems() - 1);
delete instance;
}
// get/create the breakpoint for the address
target_addr_t address = instance->Address();
Breakpoint* breakpoint = fTeam->BreakpointAtAddress(address);
if (breakpoint == NULL) {
breakpoint = new(std::nothrow) Breakpoint(image, address);
if (breakpoint == NULL || !fTeam->AddBreakpoint(breakpoint)) {
delete breakpoint;
break;
}
}
breakpoint->AddUserBreakpoint(instance);
instance->SetBreakpoint(breakpoint);
}
}
// install the breakpoints for the new user breakpoint instances
teamLocker.Unlock();
for (int32 i = 0; UserBreakpointInstance* instance = newInstances.ItemAt(i);
i++) {
Breakpoint* breakpoint = instance->GetBreakpoint();
if (breakpoint == NULL
|| _UpdateBreakpointInstallation(breakpoint) != B_OK) {
// something went wrong -- remove the instance
teamLocker.Lock();
instance->GetUserBreakpoint()->RemoveInstance(instance);
if (breakpoint != NULL) {
breakpoint->AddUserBreakpoint(instance);
if (breakpoint->IsUnused())
fTeam->RemoveBreakpoint(breakpoint);
}
teamLocker.Unlock();
}
}
}
void
TeamDebugger::_HandleSetUserBreakpoint(target_addr_t address, bool enabled)
{
TRACE_CONTROL("TeamDebugger::_HandleSetUserBreakpoint(%#llx, %d)\n",
address, enabled);
// check whether there already is a breakpoint
AutoLocker< ::Team> locker(fTeam);
Breakpoint* breakpoint = fTeam->BreakpointAtAddress(address);
UserBreakpoint* userBreakpoint = NULL;
if (breakpoint != NULL && breakpoint->FirstUserBreakpoint() != NULL)
userBreakpoint = breakpoint->FirstUserBreakpoint()->GetUserBreakpoint();
BReference<UserBreakpoint> userBreakpointReference(userBreakpoint);
if (userBreakpoint == NULL) {
TRACE_CONTROL(" no breakpoint yet\n");
// get the function at the address
Image* image = fTeam->ImageByAddress(address);
TRACE_CONTROL(" image: %p\n", image);
if (image == NULL)
return;
ImageDebugInfo* imageDebugInfo = image->GetImageDebugInfo();
TRACE_CONTROL(" image debug info: %p\n", imageDebugInfo);
if (imageDebugInfo == NULL)
return;
// TODO: Handle this case by loading the debug info, if possible!
FunctionInstance* functionInstance
= imageDebugInfo->FunctionAtAddress(address);
TRACE_CONTROL(" function instance: %p\n", functionInstance);
if (functionInstance == NULL)
return;
Function* function = functionInstance->GetFunction();
TRACE_CONTROL(" function: %p\n", function);
// get the source location for the address
FunctionDebugInfo* functionDebugInfo
= functionInstance->GetFunctionDebugInfo();
SourceLocation sourceLocation;
Statement* breakpointStatement = NULL;
if (functionDebugInfo->GetSpecificImageDebugInfo()->GetStatement(
functionDebugInfo, address, breakpointStatement) != B_OK) {
return;
}
sourceLocation = breakpointStatement->StartSourceLocation();
breakpointStatement->ReleaseReference();
target_addr_t relativeAddress = address - functionInstance->Address();
TRACE_CONTROL(" relative address: %#llx, source location: "
"(%ld, %ld)\n", relativeAddress, sourceLocation.Line(),
sourceLocation.Column());
// get function id
FunctionID* functionID = functionInstance->GetFunctionID();
if (functionID == NULL)
return;
BReference<FunctionID> functionIDReference(functionID, true);
// create the user breakpoint
userBreakpoint = new(std::nothrow) UserBreakpoint(
UserBreakpointLocation(functionID, function->SourceFile(),
sourceLocation, relativeAddress));
if (userBreakpoint == NULL)
return;
userBreakpointReference.SetTo(userBreakpoint, true);
TRACE_CONTROL(" created user breakpoint: %p\n", userBreakpoint);
// iterate through all function instances and create
// UserBreakpointInstances
for (FunctionInstanceList::ConstIterator it
= function->Instances().GetIterator();
FunctionInstance* instance = it.Next();) {
TRACE_CONTROL(" function instance %p: range: %#llx - %#llx\n",
instance, instance->Address(),
instance->Address() + instance->Size());
// get the breakpoint address for the instance
target_addr_t instanceAddress = 0;
if (instance == functionInstance) {
instanceAddress = address;
} else if (functionInstance->SourceFile() != NULL) {
// We have a source file, so get the address for the source
// location.
Statement* statement = NULL;
functionDebugInfo = instance->GetFunctionDebugInfo();
functionDebugInfo->GetSpecificImageDebugInfo()
->GetStatementAtSourceLocation(functionDebugInfo,
sourceLocation, statement);
if (statement != NULL) {
instanceAddress = statement->CoveringAddressRange().Start();
// TODO: What about BreakpointAllowed()?
statement->ReleaseReference();
}
}
TRACE_CONTROL(" breakpoint address using source info: %llx\n",
instanceAddress);
if (instanceAddress == 0) {
// No source file (or we failed getting the statement), so try
// to use the same relative address.
if (relativeAddress > instance->Size())
continue;
instanceAddress = instance->Address() + relativeAddress;
}
TRACE_CONTROL(" final breakpoint address: %llx\n",
instanceAddress);
UserBreakpointInstance* breakpointInstance = new(std::nothrow)
UserBreakpointInstance(userBreakpoint, instanceAddress);
if (breakpointInstance == NULL
|| !userBreakpoint->AddInstance(breakpointInstance)) {
delete breakpointInstance;
return;
}
TRACE_CONTROL(" breakpoint instance: %p\n", breakpointInstance);
}
}
locker.Unlock();
_HandleSetUserBreakpoint(userBreakpoint, enabled);
}
