status_t
DwarfImageDebugInfo::GetType(GlobalTypeCache* cache,
const BString& name, const TypeLookupConstraints& constraints,
Type*& _type)
{
int32 registerCount = fArchitecture->CountRegisters();
const Register* registers = fArchitecture->Registers();
// get the DWARF -> architecture register map
RegisterMap* fromDwarfMap;
status_t error = fArchitecture->GetDwarfRegisterMaps(NULL, &fromDwarfMap);
if (error != B_OK)
return error;
BReference<RegisterMap> fromDwarfMapReference(fromDwarfMap, true);
// create the target interface
BasicTargetInterface *inputInterface
= new(std::nothrow) BasicTargetInterface(registers, registerCount,
fromDwarfMap, fArchitecture, fDebuggerInterface);
if (inputInterface == NULL)
return B_NO_MEMORY;
BReference<BasicTargetInterface> inputInterfaceReference(inputInterface,
true);
// iterate through all compilation units
for (int32 i = 0; CompilationUnit* unit = fFile->CompilationUnitAt(i);
i++) {
DwarfTypeContext* typeContext = NULL;
BReference<DwarfTypeContext> typeContextReference;
// iterate through all types of the compilation unit
for (DebugInfoEntryList::ConstIterator it
= unit->UnitEntry()->Types().GetIterator();
DIEType* typeEntry = dynamic_cast<DIEType*>(it.Next());) {
if (typeEntry->IsDeclaration())
continue;
if (constraints.HasTypeKind()) {
if (dwarf_tag_to_type_kind(typeEntry->Tag())
!= constraints.TypeKind())
continue;
if (!_EvaluateBaseTypeConstraints(typeEntry,
constraints))
continue;
}
if (constraints.HasSubtypeKind()
&& dwarf_tag_to_subtype_kind(typeEntry->Tag())
!= constraints.SubtypeKind())
continue;
BString typeEntryName;
DwarfUtils::GetFullyQualifiedDIEName(typeEntry, typeEntryName);
if (typeEntryName != name)
continue;
// The name matches and the entry is not just a declaration --
// create the type. First create the type context lazily.
if (typeContext == NULL) {
typeContext = new(std::nothrow)
DwarfTypeContext(fArchitecture, fImageInfo.ImageID(), fFile,
unit, NULL, 0, 0, fRelocationDelta, inputInterface,
fromDwarfMap);
if (typeContext == NULL)
return B_NO_MEMORY;
typeContextReference.SetTo(typeContext, true);
}
// create the type
DwarfType* type;
DwarfTypeFactory typeFactory(typeContext, fTypeLookup, cache);
error = typeFactory.CreateType(typeEntry, type);
if (error != B_OK)
continue;
_type = type;
return B_OK;
}
}
return B_ENTRY_NOT_FOUND;
}
status_t
DwarfImageDebugInfo::CreateFrame(Image* image,
FunctionInstance* functionInstance, CpuState* cpuState,
bool getFullFrameInfo, ReturnValueInfoList* returnValueInfos,
StackFrame*& _frame, CpuState*& _previousCpuState)
{
DwarfFunctionDebugInfo* function = dynamic_cast<DwarfFunctionDebugInfo*>(
functionInstance->GetFunctionDebugInfo());
FunctionID* functionID = functionInstance->GetFunctionID();
BReference<FunctionID> functionIDReference;
if (functionID != NULL)
functionIDReference.SetTo(functionID, true);
DIESubprogram* entry = function != NULL
? function->SubprogramEntry() : NULL;
TRACE_CFI("DwarfImageDebugInfo::CreateFrame(): subprogram DIE: %p, "
"function: %s\n", entry,
functionID->FunctionName().String());
int32 registerCount = fArchitecture->CountRegisters();
const Register* registers = fArchitecture->Registers();
// get the DWARF <-> architecture register maps
RegisterMap* toDwarfMap;
RegisterMap* fromDwarfMap;
status_t error = fArchitecture->GetDwarfRegisterMaps(&toDwarfMap,
&fromDwarfMap);
if (error != B_OK)
return error;
BReference<RegisterMap> toDwarfMapReference(toDwarfMap, true);
BReference<RegisterMap> fromDwarfMapReference(fromDwarfMap, true);
// create a clean CPU state for the previous frame
CpuState* previousCpuState;
error = fArchitecture->CreateCpuState(previousCpuState);
if (error != B_OK)
return error;
BReference<CpuState> previousCpuStateReference(previousCpuState, true);
// create the target interfaces
UnwindTargetInterface* inputInterface
= new(std::nothrow) UnwindTargetInterface(registers, registerCount,
fromDwarfMap, toDwarfMap, cpuState, fArchitecture,
fDebuggerInterface);
if (inputInterface == NULL)
return B_NO_MEMORY;
BReference<UnwindTargetInterface> inputInterfaceReference(inputInterface,
true);
UnwindTargetInterface* outputInterface
= new(std::nothrow) UnwindTargetInterface(registers, registerCount,
fromDwarfMap, toDwarfMap, previousCpuState, fArchitecture,
fDebuggerInterface);
if (outputInterface == NULL)
return B_NO_MEMORY;
BReference<UnwindTargetInterface> outputInterfaceReference(outputInterface,
true);
// do the unwinding
target_addr_t instructionPointer
= cpuState->InstructionPointer() - fRelocationDelta;
target_addr_t framePointer;
CompilationUnit* unit = function != NULL ? function->GetCompilationUnit()
: NULL;
error = fFile->UnwindCallFrame(unit, fArchitecture->AddressSize(), entry,
instructionPointer, inputInterface, outputInterface, framePointer);
if (error != B_OK) {
TRACE_CFI("Failed to unwind call frame: %s\n", strerror(error));
return B_UNSUPPORTED;
}
TRACE_CFI_ONLY(
TRACE_CFI("unwound registers:\n");
for (int32 i = 0; i < registerCount; i++) {
const Register* reg = registers + i;
BVariant value;
if (previousCpuState->GetRegisterValue(reg, value)) {
TRACE_CFI(" %3s: %#" B_PRIx64 "\n", reg->Name(),
value.ToUInt64());
} else
TRACE_CFI(" %3s: undefined\n", reg->Name());
}
)
status_t
DwarfImageDebugInfo::CreateFrame(Image* image,
FunctionInstance* functionInstance, CpuState* cpuState,
StackFrame*& _previousFrame, CpuState*& _previousCpuState)
{
DwarfFunctionDebugInfo* function = dynamic_cast<DwarfFunctionDebugInfo*>(
functionInstance->GetFunctionDebugInfo());
if (function == NULL)
return B_BAD_VALUE;
TRACE_CFI("DwarfImageDebugInfo::CreateFrame(): subprogram DIE: %p\n",
function->SubprogramEntry());
int32 registerCount = fArchitecture->CountRegisters();
const Register* registers = fArchitecture->Registers();
// get the DWARF <-> architecture register maps
RegisterMap* toDwarfMap;
RegisterMap* fromDwarfMap;
status_t error = fArchitecture->GetDwarfRegisterMaps(&toDwarfMap,
&fromDwarfMap);
if (error != B_OK)
return error;
Reference<RegisterMap> toDwarfMapReference(toDwarfMap, true);
Reference<RegisterMap> fromDwarfMapReference(fromDwarfMap, true);
// create a clean CPU state for the previous frame
CpuState* previousCpuState;
error = fArchitecture->CreateCpuState(previousCpuState);
if (error != B_OK)
return error;
Reference<CpuState> previousCpuStateReference(previousCpuState, true);
// create the target interfaces
UnwindTargetInterface* inputInterface
= new(std::nothrow) UnwindTargetInterface(registers, registerCount,
fromDwarfMap, toDwarfMap, cpuState, fArchitecture, fTeamMemory);
if (inputInterface == NULL)
return B_NO_MEMORY;
Reference<UnwindTargetInterface> inputInterfaceReference(inputInterface,
true);
UnwindTargetInterface* outputInterface
= new(std::nothrow) UnwindTargetInterface(registers, registerCount,
fromDwarfMap, toDwarfMap, previousCpuState, fArchitecture,
fTeamMemory);
if (outputInterface == NULL)
return B_NO_MEMORY;
Reference<UnwindTargetInterface> outputInterfaceReference(outputInterface,
true);
// do the unwinding
target_addr_t instructionPointer
= cpuState->InstructionPointer() - fRelocationDelta;
target_addr_t framePointer;
CompilationUnit* unit = function->GetCompilationUnit();
error = fFile->UnwindCallFrame(unit, function->SubprogramEntry(),
instructionPointer, inputInterface, outputInterface, framePointer);
if (error != B_OK) {
TRACE_CFI("Failed to unwind call frame: %s\n", strerror(error));
return B_UNSUPPORTED;
}
TRACE_CFI_ONLY(
TRACE_CFI("unwound registers:\n");
for (int32 i = 0; i < registerCount; i++) {
const Register* reg = registers + i;
BVariant value;
if (previousCpuState->GetRegisterValue(reg, value))
TRACE_CFI(" %3s: %#lx\n", reg->Name(), value.ToUInt32());
else
TRACE_CFI(" %3s: undefined\n", reg->Name());
}
)
