forked from OSchip/llvm-project
68 lines
2.3 KiB
C++
68 lines
2.3 KiB
C++
//===-- DIERef.cpp ----------------------------------------------*- C++ -*-===//
|
|
//
|
|
// The LLVM Compiler Infrastructure
|
|
//
|
|
// This file is distributed under the University of Illinois Open Source
|
|
// License. See LICENSE.TXT for details.
|
|
//
|
|
//===----------------------------------------------------------------------===//
|
|
|
|
#include "DIERef.h"
|
|
#include "DWARFUnit.h"
|
|
#include "DWARFDebugInfo.h"
|
|
#include "DWARFFormValue.h"
|
|
#include "SymbolFileDWARF.h"
|
|
#include "SymbolFileDWARFDebugMap.h"
|
|
|
|
DIERef::DIERef(lldb::user_id_t uid, SymbolFileDWARF *dwarf)
|
|
: cu_offset(DW_INVALID_OFFSET), die_offset(uid & 0xffffffff) {
|
|
SymbolFileDWARFDebugMap *debug_map = dwarf->GetDebugMapSymfile();
|
|
if (debug_map) {
|
|
const uint32_t oso_idx = debug_map->GetOSOIndexFromUserID(uid);
|
|
SymbolFileDWARF *actual_dwarf = debug_map->GetSymbolFileByOSOIndex(oso_idx);
|
|
if (actual_dwarf) {
|
|
DWARFDebugInfo *debug_info = actual_dwarf->DebugInfo();
|
|
if (debug_info) {
|
|
DWARFUnit *dwarf_cu =
|
|
debug_info->GetCompileUnitContainingDIEOffset(die_offset);
|
|
if (dwarf_cu) {
|
|
cu_offset = dwarf_cu->GetOffset();
|
|
return;
|
|
}
|
|
}
|
|
}
|
|
die_offset = DW_INVALID_OFFSET;
|
|
} else {
|
|
cu_offset = uid >> 32;
|
|
}
|
|
}
|
|
|
|
DIERef::DIERef(const DWARFFormValue &form_value)
|
|
: cu_offset(DW_INVALID_OFFSET), die_offset(DW_INVALID_OFFSET) {
|
|
if (form_value.IsValid()) {
|
|
const DWARFUnit *dwarf_cu = form_value.GetCompileUnit();
|
|
if (dwarf_cu) {
|
|
if (dwarf_cu->GetBaseObjOffset() != DW_INVALID_OFFSET)
|
|
cu_offset = dwarf_cu->GetBaseObjOffset();
|
|
else
|
|
cu_offset = dwarf_cu->GetOffset();
|
|
}
|
|
die_offset = form_value.Reference();
|
|
}
|
|
}
|
|
|
|
lldb::user_id_t DIERef::GetUID(SymbolFileDWARF *dwarf) const {
|
|
//----------------------------------------------------------------------
|
|
// Each SymbolFileDWARF will set its ID to what is expected.
|
|
//
|
|
// SymbolFileDWARF, when used for DWARF with .o files on MacOSX, has the
|
|
// ID set to the compile unit index.
|
|
//
|
|
// SymbolFileDWARFDwo sets the ID to the compile unit offset.
|
|
//----------------------------------------------------------------------
|
|
if (dwarf && die_offset != DW_INVALID_OFFSET)
|
|
return dwarf->GetID() | die_offset;
|
|
else
|
|
return LLDB_INVALID_UID;
|
|
}
|