1 //===- DWARFDebugMacro.cpp ------------------------------------------------===//
3 // The LLVM Compiler Infrastructure
5 // This file is distributed under the University of Illinois Open Source
6 // License. See LICENSE.TXT for details.
8 //===----------------------------------------------------------------------===//
10 #include "llvm/DebugInfo/DWARF/DWARFDebugMacro.h"
11 #include "llvm/BinaryFormat/Dwarf.h"
12 #include "llvm/Support/WithColor.h"
13 #include "llvm/Support/raw_ostream.h"
17 using namespace dwarf;
19 void DWARFDebugMacro::dump(raw_ostream &OS) const {
20 unsigned IndLevel = 0;
21 for (const Entry &E : Macros) {
22 // There should not be DW_MACINFO_end_file when IndLevel is Zero. However,
23 // this check handles the case of corrupted ".debug_macinfo" section.
25 IndLevel -= (E.Type == DW_MACINFO_end_file);
27 for (unsigned I = 0; I < IndLevel; I++)
29 IndLevel += (E.Type == DW_MACINFO_start_file);
31 WithColor(OS, HighlightColor::Macro).get() << MacinfoString(E.Type);
34 // Got a corrupted ".debug_macinfo" section (invalid macinfo type).
36 case DW_MACINFO_define:
37 case DW_MACINFO_undef:
38 OS << " - lineno: " << E.Line;
39 OS << " macro: " << E.MacroStr;
41 case DW_MACINFO_start_file:
42 OS << " - lineno: " << E.Line;
43 OS << " filenum: " << E.File;
45 case DW_MACINFO_end_file:
47 case DW_MACINFO_vendor_ext:
48 OS << " - constant: " << E.ExtConstant;
49 OS << " string: " << E.ExtStr;
56 void DWARFDebugMacro::parse(DataExtractor data) {
58 while (data.isValidOffset(Offset)) {
59 // A macro list entry consists of:
62 E.Type = data.getULEB128(&Offset);
65 // Reached end of ".debug_macinfo" section.
71 // Got a corrupted ".debug_macinfo" section (invalid macinfo type).
72 // Push the corrupted entry to the list and halt parsing.
73 E.Type = DW_MACINFO_invalid;
76 case DW_MACINFO_define:
77 case DW_MACINFO_undef:
79 E.Line = data.getULEB128(&Offset);
81 E.MacroStr = data.getCStr(&Offset);
83 case DW_MACINFO_start_file:
85 E.Line = data.getULEB128(&Offset);
87 E.File = data.getULEB128(&Offset);
89 case DW_MACINFO_end_file:
91 case DW_MACINFO_vendor_ext:
92 // 2. Vendor extension constant
93 E.ExtConstant = data.getULEB128(&Offset);
94 // 3. Vendor extension string
95 E.ExtStr = data.getCStr(&Offset);