size_t HashKey(const FunctionInstance* key) const
{
// Instances without source file only equal themselves.
if (key->SourceFile() == NULL)
return (uint32)(addr_t)key;
uint32 hash = StringUtils::HashValue(key->Name());
hash = hash * 17 + (uint32)(addr_t)key->SourceFile();
SourceLocation location = key->GetSourceLocation();
hash = hash * 17 + location.Line();
hash = hash * 17 + location.Column();
return hash;
}
status_t
Team::GetStatementAtSourceLocation(SourceCode* sourceCode,
const SourceLocation& location, Statement*& _statement)
{
TRACE_CODE("Team::GetStatementAtSourceLocation(%p, (%" B_PRId32 ", %"
B_PRId32 "))\n", sourceCode, location.Line(), location.Column());
// If we're lucky the source code can provide us with a statement.
if (DisassembledCode* code = dynamic_cast<DisassembledCode*>(sourceCode)) {
Statement* statement = code->StatementAtLocation(location);
if (statement == NULL)
return B_ENTRY_NOT_FOUND;
statement->AcquireReference();
_statement = statement;
return B_OK;
}
// Go the long and stony way over the source file and the team debug info.
// get the source file for the source code
LocatableFile* sourceFile = sourceCode->GetSourceFile();
if (sourceFile == NULL)
return B_ENTRY_NOT_FOUND;
// get the function at the source location
Function* function = fDebugInfo->FunctionAtSourceLocation(sourceFile,
location);
if (function == NULL)
return B_ENTRY_NOT_FOUND;
// Get some function instance and ask its image debug info to provide us
// with a statement.
FunctionInstance* functionInstance = function->FirstInstance();
if (functionInstance == NULL)
return B_ENTRY_NOT_FOUND;
FunctionDebugInfo* functionDebugInfo
= functionInstance->GetFunctionDebugInfo();
return functionDebugInfo->GetSpecificImageDebugInfo()
->GetStatementAtSourceLocation(functionDebugInfo, location, _statement);
}
status_t
DebugReportGenerator::_DumpFunctionDisassembly(BFile& _output,
target_addr_t instructionPointer)
{
AutoLocker< ::Team> teamLocker(fTeam);
BString data;
FunctionInstance* instance = NULL;
Statement* statement = NULL;
status_t error = fTeam->GetStatementAtAddress(instructionPointer, instance,
statement);
if (error != B_OK) {
data.SetToFormat("Unable to retrieve disassembly for IP %#" B_PRIx64
": %s\n", instructionPointer, strerror(error));
WRITE_AND_CHECK(_output, data);
return B_OK;
}
DisassembledCode* code = instance->GetSourceCode();
Function* function = instance->GetFunction();
if (code == NULL) {
switch (function->SourceCodeState()) {
case FUNCTION_SOURCE_NOT_LOADED:
case FUNCTION_SOURCE_LOADED:
// FUNCTION_SOURCE_LOADED is included since, if we entered
// here, it implies that the high level source for the
// function has been loaded, but the disassembly has not.
function->AddListener(this);
fSourceWaitingFunction = function;
fListener->FunctionSourceCodeRequested(instance, true);
// fall through
case FUNCTION_SOURCE_LOADING:
{
teamLocker.Unlock();
do {
error = acquire_sem(fTeamDataSem);
} while (error == B_INTERRUPTED);
if (error != B_OK)
return error;
teamLocker.Lock();
break;
}
default:
return B_OK;
}
if (instance->SourceCodeState() == FUNCTION_SOURCE_UNAVAILABLE)
return B_OK;
error = fTeam->GetStatementAtAddress(instructionPointer, instance,
statement);
code = instance->GetSourceCode();
}
SourceLocation location = statement->StartSourceLocation();
data = "\t\t\tDisassembly:\n";
WRITE_AND_CHECK(_output, data);
for (int32 i = 0; i <= location.Line(); i++) {
data = "\t\t\t\t";
data << code->LineAt(i);
if (i == location.Line())
data << " <--";
data << "\n";
WRITE_AND_CHECK(_output, data);
}
data = "\n";
WRITE_AND_CHECK(_output, data);
return B_OK;
}
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);
}
