//===-- DWARFASTParserOCaml.cpp ---------------------------------*- C++ -*-===//
#include "DWARFASTParserOCaml.h"
#include "lldb/Core/Module.h"
#include "lldb/Symbol/CompileUnit.h"
#include "lldb/Symbol/Function.h"
#include "lldb/Symbol/ObjectFile.h"
#include "lldb/Symbol/Type.h"
#include "lldb/Symbol/TypeList.h"
#include "lldb/Utility/Error.h"
#include "lldb/Utility/Log.h"
using namespace lldb;
using namespace lldb_private;
DWARFASTParserOCaml::DWARFASTParserOCaml(OCamlASTContext &ast) : m_ast(ast) {}
DWARFASTParserOCaml::~DWARFASTParserOCaml() {}
TypeSP DWARFASTParserOCaml::ParseBaseTypeFromDIE(const DWARFDIE &die) {
SymbolFileDWARF *dwarf = die.GetDWARF();
dwarf->m_die_to_type[die.GetDIE()] = DIE_IS_BEING_PARSED;
ConstString type_name;
uint64_t byte_size = 0;
DWARFAttributes attributes;
const size_t num_attributes = die.GetAttributes(attributes);
for (uint32_t i = 0; i < num_attributes; ++i) {
DWARFFormValue form_value;
dw_attr_t attr = attributes.AttributeAtIndex(i);
if (attributes.ExtractFormValueAtIndex(i, form_value)) {
switch (attr) {
case DW_AT_name:
type_name.SetCString(form_value.AsCString());
break;
case DW_AT_byte_size:
byte_size = form_value.Unsigned();
break;
case DW_AT_encoding:
break;
default:
assert(false && "Unsupported attribute for DW_TAG_base_type");
}
}
}
Declaration decl;
CompilerType compiler_type = m_ast.CreateBaseType(type_name, byte_size);
return std::make_shared<Type>(die.GetID(), dwarf, type_name, byte_size,
nullptr, LLDB_INVALID_UID, Type::eEncodingIsUID,
decl, compiler_type, Type::eResolveStateFull);
}
lldb::TypeSP DWARFASTParserOCaml::ParseTypeFromDWARF(const SymbolContext &sc,
const DWARFDIE &die,
Log *log,
bool *type_is_new_ptr) {
if (type_is_new_ptr)
*type_is_new_ptr = false;
if (!die)
return nullptr;
SymbolFileDWARF *dwarf = die.GetDWARF();
Type *type_ptr = dwarf->m_die_to_type.lookup(die.GetDIE());
if (type_ptr == DIE_IS_BEING_PARSED)
return nullptr;
if (type_ptr != nullptr)
return type_ptr->shared_from_this();
TypeSP type_sp;
if (type_is_new_ptr)
*type_is_new_ptr = true;
switch (die.Tag()) {
case DW_TAG_base_type: {
type_sp = ParseBaseTypeFromDIE(die);
break;
}
case DW_TAG_array_type: {
break;
}
case DW_TAG_class_type: {
break;
}
case DW_TAG_reference_type: {
break;
}
}
if (!type_sp)
return nullptr;
DWARFDIE sc_parent_die = SymbolFileDWARF::GetParentSymbolContextDIE(die);
dw_tag_t sc_parent_tag = sc_parent_die.Tag();
SymbolContextScope *symbol_context_scope = nullptr;
if (sc_parent_tag == DW_TAG_compile_unit) {
symbol_context_scope = sc.comp_unit;
} else if (sc.function != nullptr && sc_parent_die) {
symbol_context_scope =
sc.function->GetBlock(true).FindBlockByID(sc_parent_die.GetID());
if (symbol_context_scope == nullptr)
symbol_context_scope = sc.function;
}
if (symbol_context_scope != nullptr)
type_sp->SetSymbolContextScope(symbol_context_scope);
dwarf->GetTypeList()->Insert(type_sp);
dwarf->m_die_to_type[die.GetDIE()] = type_sp.get();
return type_sp;
}
Function *DWARFASTParserOCaml::ParseFunctionFromDWARF(const SymbolContext &sc,
const DWARFDIE &die) {
DWARFRangeList func_ranges;
const char *name = NULL;
const char *mangled = NULL;
int decl_file = 0;
int decl_line = 0;
int decl_column = 0;
int call_file = 0;
int call_line = 0;
int call_column = 0;
DWARFExpression frame_base(die.GetCU());
Log *log(lldb_private::GetLogIfAnyCategoriesSet(LIBLLDB_LOG_LANGUAGE));
if (die) {
SymbolFileDWARF *dwarf = die.GetDWARF();
if (log) {
dwarf->GetObjectFile()->GetModule()->LogMessage(
log, "DWARFASTParserOCaml::ParseFunctionFromDWARF (die = 0x%8.8x) %s "
"name = '%s')",
die.GetOffset(), DW_TAG_value_to_name(die.Tag()), die.GetName());
}
}
assert(die.Tag() == DW_TAG_subprogram);
if (die.Tag() != DW_TAG_subprogram)
return NULL;
if (die.GetDIENamesAndRanges(name, mangled, func_ranges, decl_file, decl_line,
decl_column, call_file, call_line, call_column,
&frame_base)) {
AddressRange func_range;
lldb::addr_t lowest_func_addr = func_ranges.GetMinRangeBase(0);
lldb::addr_t highest_func_addr = func_ranges.GetMaxRangeEnd(0);
if (lowest_func_addr != LLDB_INVALID_ADDRESS &&
lowest_func_addr <= highest_func_addr) {
ModuleSP module_sp(die.GetModule());
func_range.GetBaseAddress().ResolveAddressUsingFileSections(
lowest_func_addr, module_sp->GetSectionList());
if (func_range.GetBaseAddress().IsValid())
func_range.SetByteSize(highest_func_addr - lowest_func_addr);
}
if (func_range.GetBaseAddress().IsValid()) {
Mangled func_name;
func_name.SetValue(ConstString(name), true);
FunctionSP func_sp;
std::unique_ptr<Declaration> decl_ap;
if (decl_file != 0 || decl_line != 0 || decl_column != 0)
decl_ap.reset(new Declaration(
sc.comp_unit->GetSupportFiles().GetFileSpecAtIndex(decl_file),
decl_line, decl_column));
SymbolFileDWARF *dwarf = die.GetDWARF();
Type *func_type = dwarf->m_die_to_type.lookup(die.GetDIE());
assert(func_type == NULL || func_type != DIE_IS_BEING_PARSED);
if (dwarf->FixupAddress(func_range.GetBaseAddress())) {
const user_id_t func_user_id = die.GetID();
func_sp.reset(new Function(sc.comp_unit,
func_user_id, // UserID is the DIE offset
func_user_id, func_name, func_type,
func_range)); // first address range
if (func_sp.get() != NULL) {
if (frame_base.IsValid())
func_sp->GetFrameBaseExpression() = frame_base;
sc.comp_unit->AddFunction(func_sp);
return func_sp.get();
}
}
}
}
return NULL;
}
lldb_private::CompilerDeclContext
DWARFASTParserOCaml::GetDeclContextForUIDFromDWARF(const DWARFDIE &die) {
return CompilerDeclContext();
}
lldb_private::CompilerDeclContext
DWARFASTParserOCaml::GetDeclContextContainingUIDFromDWARF(const DWARFDIE &die) {
return CompilerDeclContext();
}
