blob: 626d1a95b76f55728004211c25cccb4ab4a2e7db (
plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
|
//===-- DIERef.cpp ----------------------------------------------*- C++ -*-===//
//
// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
// See https://llvm.org/LICENSE.txt for license information.
// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
//
//===----------------------------------------------------------------------===//
#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;
}
|
