Benjamin Kramer | aa2f78f | 2011-09-13 19:42:23 +0000 | [diff] [blame] | 1 | //===-- DWARFContext.cpp --------------------------------------------------===// |
| 2 | // |
| 3 | // The LLVM Compiler Infrastructure |
| 4 | // |
| 5 | // This file is distributed under the University of Illinois Open Source |
| 6 | // License. See LICENSE.TXT for details. |
| 7 | // |
| 8 | //===----------------------------------------------------------------------===// |
| 9 | |
Zachary Turner | 82af943 | 2015-01-30 18:07:45 +0000 | [diff] [blame] | 10 | #include "llvm/DebugInfo/DWARF/DWARFContext.h" |
Alexey Samsonov | e16e16a | 2012-07-19 07:03:58 +0000 | [diff] [blame] | 11 | #include "llvm/ADT/SmallString.h" |
Alexey Samsonov | 3d0e3ed | 2013-04-17 14:27:04 +0000 | [diff] [blame] | 12 | #include "llvm/ADT/StringSwitch.h" |
Zachary Turner | 82af943 | 2015-01-30 18:07:45 +0000 | [diff] [blame] | 13 | #include "llvm/DebugInfo/DWARF/DWARFAcceleratorTable.h" |
| 14 | #include "llvm/DebugInfo/DWARF/DWARFDebugArangeSet.h" |
David Blaikie | 65a8efe | 2015-11-11 19:28:21 +0000 | [diff] [blame] | 15 | #include "llvm/DebugInfo/DWARF/DWARFUnitIndex.h" |
Alexey Samsonov | 068fc8a | 2013-04-23 10:17:34 +0000 | [diff] [blame] | 16 | #include "llvm/Support/Compression.h" |
Benjamin Kramer | 6dda032 | 2011-09-15 18:02:20 +0000 | [diff] [blame] | 17 | #include "llvm/Support/Dwarf.h" |
Benjamin Kramer | 07d4b1c | 2011-09-15 16:57:13 +0000 | [diff] [blame] | 18 | #include "llvm/Support/Format.h" |
Alexey Samsonov | e16e16a | 2012-07-19 07:03:58 +0000 | [diff] [blame] | 19 | #include "llvm/Support/Path.h" |
Benjamin Kramer | a6002fd | 2011-09-14 01:09:52 +0000 | [diff] [blame] | 20 | #include "llvm/Support/raw_ostream.h" |
Benjamin Kramer | 2602ca6 | 2011-09-15 20:43:22 +0000 | [diff] [blame] | 21 | #include <algorithm> |
Benjamin Kramer | aa2f78f | 2011-09-13 19:42:23 +0000 | [diff] [blame] | 22 | using namespace llvm; |
Benjamin Kramer | 6dda032 | 2011-09-15 18:02:20 +0000 | [diff] [blame] | 23 | using namespace dwarf; |
Rafael Espindola | 4f60a38 | 2013-05-30 03:05:14 +0000 | [diff] [blame] | 24 | using namespace object; |
Benjamin Kramer | aa2f78f | 2011-09-13 19:42:23 +0000 | [diff] [blame] | 25 | |
Chandler Carruth | e96dd89 | 2014-04-21 22:55:11 +0000 | [diff] [blame] | 26 | #define DEBUG_TYPE "dwarf" |
| 27 | |
Eric Christopher | 494109b | 2012-10-16 23:46:25 +0000 | [diff] [blame] | 28 | typedef DWARFDebugLine::LineTable DWARFLineTable; |
Alexey Samsonov | dce6734 | 2014-05-15 21:24:32 +0000 | [diff] [blame] | 29 | typedef DILineInfoSpecifier::FileLineInfoKind FileLineInfoKind; |
| 30 | typedef DILineInfoSpecifier::FunctionNameKind FunctionNameKind; |
Eric Christopher | 494109b | 2012-10-16 23:46:25 +0000 | [diff] [blame] | 31 | |
David Blaikie | ecd21ff | 2013-09-24 19:50:00 +0000 | [diff] [blame] | 32 | static void dumpPubSection(raw_ostream &OS, StringRef Name, StringRef Data, |
Eric Christopher | 0de5359 | 2013-09-25 23:02:36 +0000 | [diff] [blame] | 33 | bool LittleEndian, bool GnuStyle) { |
David Blaikie | ecd21ff | 2013-09-24 19:50:00 +0000 | [diff] [blame] | 34 | OS << "\n." << Name << " contents:\n"; |
| 35 | DataExtractor pubNames(Data, LittleEndian, 0); |
| 36 | uint32_t offset = 0; |
David Blaikie | 8a263cb | 2013-11-26 00:22:37 +0000 | [diff] [blame] | 37 | while (pubNames.isValidOffset(offset)) { |
| 38 | OS << "length = " << format("0x%08x", pubNames.getU32(&offset)); |
| 39 | OS << " version = " << format("0x%04x", pubNames.getU16(&offset)); |
| 40 | OS << " unit_offset = " << format("0x%08x", pubNames.getU32(&offset)); |
| 41 | OS << " unit_size = " << format("0x%08x", pubNames.getU32(&offset)) << '\n'; |
| 42 | if (GnuStyle) |
| 43 | OS << "Offset Linkage Kind Name\n"; |
| 44 | else |
| 45 | OS << "Offset Name\n"; |
Eric Christopher | 0de5359 | 2013-09-25 23:02:36 +0000 | [diff] [blame] | 46 | |
David Blaikie | 8a263cb | 2013-11-26 00:22:37 +0000 | [diff] [blame] | 47 | while (offset < Data.size()) { |
| 48 | uint32_t dieRef = pubNames.getU32(&offset); |
| 49 | if (dieRef == 0) |
| 50 | break; |
| 51 | OS << format("0x%8.8x ", dieRef); |
| 52 | if (GnuStyle) { |
| 53 | PubIndexEntryDescriptor desc(pubNames.getU8(&offset)); |
| 54 | OS << format("%-8s", dwarf::GDBIndexEntryLinkageString(desc.Linkage)) |
| 55 | << ' ' << format("%-8s", dwarf::GDBIndexEntryKindString(desc.Kind)) |
| 56 | << ' '; |
| 57 | } |
| 58 | OS << '\"' << pubNames.getCStr(&offset) << "\"\n"; |
Eric Christopher | 0de5359 | 2013-09-25 23:02:36 +0000 | [diff] [blame] | 59 | } |
David Blaikie | ecd21ff | 2013-09-24 19:50:00 +0000 | [diff] [blame] | 60 | } |
| 61 | } |
| 62 | |
Frederic Riss | 7c50047 | 2014-11-14 19:30:08 +0000 | [diff] [blame] | 63 | static void dumpAccelSection(raw_ostream &OS, StringRef Name, |
| 64 | const DWARFSection& Section, StringRef StringSection, |
| 65 | bool LittleEndian) { |
| 66 | DataExtractor AccelSection(Section.Data, LittleEndian, 0); |
Frederic Riss | e837ec2 | 2014-11-14 16:15:53 +0000 | [diff] [blame] | 67 | DataExtractor StrData(StringSection, LittleEndian, 0); |
| 68 | OS << "\n." << Name << " contents:\n"; |
Frederic Riss | 7c50047 | 2014-11-14 19:30:08 +0000 | [diff] [blame] | 69 | DWARFAcceleratorTable Accel(AccelSection, StrData, Section.Relocs); |
Frederic Riss | e837ec2 | 2014-11-14 16:15:53 +0000 | [diff] [blame] | 70 | if (!Accel.extract()) |
| 71 | return; |
| 72 | Accel.dump(OS); |
| 73 | } |
| 74 | |
Eli Bendersky | 7a94daa | 2013-01-25 20:26:43 +0000 | [diff] [blame] | 75 | void DWARFContext::dump(raw_ostream &OS, DIDumpType DumpType) { |
| 76 | if (DumpType == DIDT_All || DumpType == DIDT_Abbrev) { |
| 77 | OS << ".debug_abbrev contents:\n"; |
| 78 | getDebugAbbrev()->dump(OS); |
| 79 | } |
Benjamin Kramer | a6002fd | 2011-09-14 01:09:52 +0000 | [diff] [blame] | 80 | |
David Blaikie | 66865d6 | 2014-01-09 00:13:35 +0000 | [diff] [blame] | 81 | if (DumpType == DIDT_All || DumpType == DIDT_AbbrevDwo) |
| 82 | if (const DWARFDebugAbbrev *D = getDebugAbbrevDWO()) { |
David Blaikie | 622dce4 | 2014-01-08 23:29:59 +0000 | [diff] [blame] | 83 | OS << "\n.debug_abbrev.dwo contents:\n"; |
David Blaikie | 66865d6 | 2014-01-09 00:13:35 +0000 | [diff] [blame] | 84 | D->dump(OS); |
David Blaikie | 622dce4 | 2014-01-08 23:29:59 +0000 | [diff] [blame] | 85 | } |
David Blaikie | 622dce4 | 2014-01-08 23:29:59 +0000 | [diff] [blame] | 86 | |
Eli Bendersky | 7a94daa | 2013-01-25 20:26:43 +0000 | [diff] [blame] | 87 | if (DumpType == DIDT_All || DumpType == DIDT_Info) { |
| 88 | OS << "\n.debug_info contents:\n"; |
Alexey Samsonov | 1eabf98 | 2014-03-13 07:52:54 +0000 | [diff] [blame] | 89 | for (const auto &CU : compile_units()) |
| 90 | CU->dump(OS); |
Eli Bendersky | 7a94daa | 2013-01-25 20:26:43 +0000 | [diff] [blame] | 91 | } |
Benjamin Kramer | a6002fd | 2011-09-14 01:09:52 +0000 | [diff] [blame] | 92 | |
David Blaikie | 66865d6 | 2014-01-09 00:13:35 +0000 | [diff] [blame] | 93 | if ((DumpType == DIDT_All || DumpType == DIDT_InfoDwo) && |
| 94 | getNumDWOCompileUnits()) { |
| 95 | OS << "\n.debug_info.dwo contents:\n"; |
Alexey Samsonov | 1eabf98 | 2014-03-13 07:52:54 +0000 | [diff] [blame] | 96 | for (const auto &DWOCU : dwo_compile_units()) |
| 97 | DWOCU->dump(OS); |
David Blaikie | 66865d6 | 2014-01-09 00:13:35 +0000 | [diff] [blame] | 98 | } |
David Blaikie | 622dce4 | 2014-01-08 23:29:59 +0000 | [diff] [blame] | 99 | |
David Blaikie | 66865d6 | 2014-01-09 00:13:35 +0000 | [diff] [blame] | 100 | if ((DumpType == DIDT_All || DumpType == DIDT_Types) && getNumTypeUnits()) { |
David Blaikie | 03c089c | 2013-09-23 22:44:47 +0000 | [diff] [blame] | 101 | OS << "\n.debug_types contents:\n"; |
Frederic Riss | 312a02e | 2014-09-29 13:56:39 +0000 | [diff] [blame] | 102 | for (const auto &TUS : type_unit_sections()) |
| 103 | for (const auto &TU : TUS) |
| 104 | TU->dump(OS); |
David Blaikie | 03c089c | 2013-09-23 22:44:47 +0000 | [diff] [blame] | 105 | } |
| 106 | |
Alexey Samsonov | 1eabf98 | 2014-03-13 07:52:54 +0000 | [diff] [blame] | 107 | if ((DumpType == DIDT_All || DumpType == DIDT_TypesDwo) && |
| 108 | getNumDWOTypeUnits()) { |
| 109 | OS << "\n.debug_types.dwo contents:\n"; |
Frederic Riss | 312a02e | 2014-09-29 13:56:39 +0000 | [diff] [blame] | 110 | for (const auto &DWOTUS : dwo_type_unit_sections()) |
| 111 | for (const auto &DWOTU : DWOTUS) |
| 112 | DWOTU->dump(OS); |
Alexey Samsonov | 1eabf98 | 2014-03-13 07:52:54 +0000 | [diff] [blame] | 113 | } |
David Blaikie | 92d9d62 | 2014-01-09 05:08:24 +0000 | [diff] [blame] | 114 | |
David Blaikie | 18e7350 | 2013-06-19 21:37:13 +0000 | [diff] [blame] | 115 | if (DumpType == DIDT_All || DumpType == DIDT_Loc) { |
David Blaikie | 03c089c | 2013-09-23 22:44:47 +0000 | [diff] [blame] | 116 | OS << "\n.debug_loc contents:\n"; |
David Blaikie | 18e7350 | 2013-06-19 21:37:13 +0000 | [diff] [blame] | 117 | getDebugLoc()->dump(OS); |
| 118 | } |
| 119 | |
David Blaikie | 9c550ac | 2014-03-25 01:44:02 +0000 | [diff] [blame] | 120 | if (DumpType == DIDT_All || DumpType == DIDT_LocDwo) { |
| 121 | OS << "\n.debug_loc.dwo contents:\n"; |
| 122 | getDebugLocDWO()->dump(OS); |
| 123 | } |
| 124 | |
Eli Bendersky | fd08bc1 | 2013-02-05 23:30:58 +0000 | [diff] [blame] | 125 | if (DumpType == DIDT_All || DumpType == DIDT_Frames) { |
| 126 | OS << "\n.debug_frame contents:\n"; |
| 127 | getDebugFrame()->dump(OS); |
| 128 | } |
| 129 | |
Amjad Aboud | e59cc3e | 2015-11-12 09:38:54 +0000 | [diff] [blame] | 130 | if (DumpType == DIDT_All || DumpType == DIDT_Macro) { |
| 131 | OS << "\n.debug_macinfo contents:\n"; |
| 132 | getDebugMacro()->dump(OS); |
| 133 | } |
| 134 | |
Benjamin Kramer | a6002fd | 2011-09-14 01:09:52 +0000 | [diff] [blame] | 135 | uint32_t offset = 0; |
Eli Bendersky | 7a94daa | 2013-01-25 20:26:43 +0000 | [diff] [blame] | 136 | if (DumpType == DIDT_All || DumpType == DIDT_Aranges) { |
| 137 | OS << "\n.debug_aranges contents:\n"; |
| 138 | DataExtractor arangesData(getARangeSection(), isLittleEndian(), 0); |
| 139 | DWARFDebugArangeSet set; |
| 140 | while (set.extract(arangesData, &offset)) |
| 141 | set.dump(OS); |
| 142 | } |
Benjamin Kramer | 5acab50 | 2011-09-15 02:12:05 +0000 | [diff] [blame] | 143 | |
Alexey Samsonov | 034e57a | 2012-08-27 07:17:47 +0000 | [diff] [blame] | 144 | uint8_t savedAddressByteSize = 0; |
Eli Bendersky | 7a94daa | 2013-01-25 20:26:43 +0000 | [diff] [blame] | 145 | if (DumpType == DIDT_All || DumpType == DIDT_Line) { |
| 146 | OS << "\n.debug_line contents:\n"; |
Alexey Samsonov | 1eabf98 | 2014-03-13 07:52:54 +0000 | [diff] [blame] | 147 | for (const auto &CU : compile_units()) { |
| 148 | savedAddressByteSize = CU->getAddressByteSize(); |
Alexey Samsonov | 7a18c06 | 2015-05-19 21:54:32 +0000 | [diff] [blame] | 149 | const auto *CUDIE = CU->getUnitDIE(); |
| 150 | if (CUDIE == nullptr) |
| 151 | continue; |
| 152 | unsigned stmtOffset = CUDIE->getAttributeValueAsSectionOffset( |
| 153 | CU.get(), DW_AT_stmt_list, -1U); |
Eli Bendersky | 7a94daa | 2013-01-25 20:26:43 +0000 | [diff] [blame] | 154 | if (stmtOffset != -1U) { |
David Blaikie | 1b5ee5d | 2013-09-23 17:42:01 +0000 | [diff] [blame] | 155 | DataExtractor lineData(getLineSection().Data, isLittleEndian(), |
Eli Bendersky | 7a94daa | 2013-01-25 20:26:43 +0000 | [diff] [blame] | 156 | savedAddressByteSize); |
Alexey Samsonov | 110d595 | 2014-04-30 00:09:19 +0000 | [diff] [blame] | 157 | DWARFDebugLine::LineTable LineTable; |
| 158 | LineTable.parse(lineData, &getLineSection().Relocs, &stmtOffset); |
| 159 | LineTable.dump(OS); |
Eli Bendersky | 7a94daa | 2013-01-25 20:26:43 +0000 | [diff] [blame] | 160 | } |
Benjamin Kramer | 6dda032 | 2011-09-15 18:02:20 +0000 | [diff] [blame] | 161 | } |
| 162 | } |
Benjamin Kramer | 07d4b1c | 2011-09-15 16:57:13 +0000 | [diff] [blame] | 163 | |
David Blaikie | 65a8efe | 2015-11-11 19:28:21 +0000 | [diff] [blame] | 164 | if (DumpType == DIDT_All || DumpType == DIDT_CUIndex) { |
| 165 | OS << "\n.debug_cu_index contents:\n"; |
David Blaikie | 0b44dcc | 2015-11-11 19:30:47 +0000 | [diff] [blame] | 166 | DataExtractor CUIndexData(getCUIndexSection(), isLittleEndian(), |
| 167 | savedAddressByteSize); |
David Blaikie | 65a8efe | 2015-11-11 19:28:21 +0000 | [diff] [blame] | 168 | DWARFUnitIndex CUIndex; |
David Blaikie | ee293c0 | 2015-11-12 01:57:33 +0000 | [diff] [blame] | 169 | if (CUIndex.parse(CUIndexData)) |
| 170 | CUIndex.dump(OS); |
David Blaikie | 65a8efe | 2015-11-11 19:28:21 +0000 | [diff] [blame] | 171 | } |
| 172 | |
David Blaikie | 51c4028 | 2015-11-11 19:40:49 +0000 | [diff] [blame] | 173 | if (DumpType == DIDT_All || DumpType == DIDT_TUIndex) { |
| 174 | OS << "\n.debug_tu_index contents:\n"; |
| 175 | DataExtractor TUIndexData(getTUIndexSection(), isLittleEndian(), |
| 176 | savedAddressByteSize); |
| 177 | DWARFUnitIndex TUIndex; |
David Blaikie | ee293c0 | 2015-11-12 01:57:33 +0000 | [diff] [blame] | 178 | if (TUIndex.parse(TUIndexData)) |
| 179 | TUIndex.dump(OS); |
David Blaikie | 51c4028 | 2015-11-11 19:40:49 +0000 | [diff] [blame] | 180 | } |
| 181 | |
David Blaikie | 1d4736e | 2014-02-24 23:58:54 +0000 | [diff] [blame] | 182 | if (DumpType == DIDT_All || DumpType == DIDT_LineDwo) { |
| 183 | OS << "\n.debug_line.dwo contents:\n"; |
| 184 | unsigned stmtOffset = 0; |
| 185 | DataExtractor lineData(getLineDWOSection().Data, isLittleEndian(), |
| 186 | savedAddressByteSize); |
Alexey Samsonov | 110d595 | 2014-04-30 00:09:19 +0000 | [diff] [blame] | 187 | DWARFDebugLine::LineTable LineTable; |
| 188 | while (LineTable.Prologue.parse(lineData, &stmtOffset)) { |
| 189 | LineTable.dump(OS); |
| 190 | LineTable.clear(); |
| 191 | } |
David Blaikie | 1d4736e | 2014-02-24 23:58:54 +0000 | [diff] [blame] | 192 | } |
| 193 | |
Eli Bendersky | 7a94daa | 2013-01-25 20:26:43 +0000 | [diff] [blame] | 194 | if (DumpType == DIDT_All || DumpType == DIDT_Str) { |
| 195 | OS << "\n.debug_str contents:\n"; |
| 196 | DataExtractor strData(getStringSection(), isLittleEndian(), 0); |
| 197 | offset = 0; |
| 198 | uint32_t strOffset = 0; |
| 199 | while (const char *s = strData.getCStr(&offset)) { |
| 200 | OS << format("0x%8.8x: \"%s\"\n", strOffset, s); |
| 201 | strOffset = offset; |
| 202 | } |
Benjamin Kramer | 07d4b1c | 2011-09-15 16:57:13 +0000 | [diff] [blame] | 203 | } |
Alexey Samsonov | 034e57a | 2012-08-27 07:17:47 +0000 | [diff] [blame] | 204 | |
David Blaikie | 66865d6 | 2014-01-09 00:13:35 +0000 | [diff] [blame] | 205 | if ((DumpType == DIDT_All || DumpType == DIDT_StrDwo) && |
| 206 | !getStringDWOSection().empty()) { |
| 207 | OS << "\n.debug_str.dwo contents:\n"; |
| 208 | DataExtractor strDWOData(getStringDWOSection(), isLittleEndian(), 0); |
| 209 | offset = 0; |
| 210 | uint32_t strDWOOffset = 0; |
| 211 | while (const char *s = strDWOData.getCStr(&offset)) { |
| 212 | OS << format("0x%8.8x: \"%s\"\n", strDWOOffset, s); |
| 213 | strDWOOffset = offset; |
David Blaikie | 622dce4 | 2014-01-08 23:29:59 +0000 | [diff] [blame] | 214 | } |
David Blaikie | 66865d6 | 2014-01-09 00:13:35 +0000 | [diff] [blame] | 215 | } |
David Blaikie | 622dce4 | 2014-01-08 23:29:59 +0000 | [diff] [blame] | 216 | |
Eli Bendersky | 7a94daa | 2013-01-25 20:26:43 +0000 | [diff] [blame] | 217 | if (DumpType == DIDT_All || DumpType == DIDT_Ranges) { |
| 218 | OS << "\n.debug_ranges contents:\n"; |
| 219 | // In fact, different compile units may have different address byte |
| 220 | // sizes, but for simplicity we just use the address byte size of the last |
| 221 | // compile unit (there is no easy and fast way to associate address range |
| 222 | // list and the compile unit it describes). |
| 223 | DataExtractor rangesData(getRangeSection(), isLittleEndian(), |
| 224 | savedAddressByteSize); |
| 225 | offset = 0; |
| 226 | DWARFDebugRangeList rangeList; |
| 227 | while (rangeList.extract(rangesData, &offset)) |
| 228 | rangeList.dump(OS); |
Eric Christopher | da4b219 | 2013-01-02 23:52:13 +0000 | [diff] [blame] | 229 | } |
Eric Christopher | 962c908 | 2013-01-15 23:56:56 +0000 | [diff] [blame] | 230 | |
Eric Christopher | 0de5359 | 2013-09-25 23:02:36 +0000 | [diff] [blame] | 231 | if (DumpType == DIDT_All || DumpType == DIDT_Pubnames) |
| 232 | dumpPubSection(OS, "debug_pubnames", getPubNamesSection(), |
| 233 | isLittleEndian(), false); |
Krzysztof Parzyszek | 97438dc | 2013-02-12 16:20:28 +0000 | [diff] [blame] | 234 | |
Eric Christopher | 4c7e6ba | 2013-09-25 23:02:41 +0000 | [diff] [blame] | 235 | if (DumpType == DIDT_All || DumpType == DIDT_Pubtypes) |
| 236 | dumpPubSection(OS, "debug_pubtypes", getPubTypesSection(), |
| 237 | isLittleEndian(), false); |
| 238 | |
David Blaikie | ecd21ff | 2013-09-24 19:50:00 +0000 | [diff] [blame] | 239 | if (DumpType == DIDT_All || DumpType == DIDT_GnuPubnames) |
| 240 | dumpPubSection(OS, "debug_gnu_pubnames", getGnuPubNamesSection(), |
Eric Christopher | 0de5359 | 2013-09-25 23:02:36 +0000 | [diff] [blame] | 241 | isLittleEndian(), true /* GnuStyle */); |
David Blaikie | ecd21ff | 2013-09-24 19:50:00 +0000 | [diff] [blame] | 242 | |
| 243 | if (DumpType == DIDT_All || DumpType == DIDT_GnuPubtypes) |
| 244 | dumpPubSection(OS, "debug_gnu_pubtypes", getGnuPubTypesSection(), |
Eric Christopher | 0de5359 | 2013-09-25 23:02:36 +0000 | [diff] [blame] | 245 | isLittleEndian(), true /* GnuStyle */); |
David Blaikie | 404d304 | 2013-09-19 23:01:29 +0000 | [diff] [blame] | 246 | |
David Blaikie | 66865d6 | 2014-01-09 00:13:35 +0000 | [diff] [blame] | 247 | if ((DumpType == DIDT_All || DumpType == DIDT_StrOffsetsDwo) && |
| 248 | !getStringOffsetDWOSection().empty()) { |
| 249 | OS << "\n.debug_str_offsets.dwo contents:\n"; |
| 250 | DataExtractor strOffsetExt(getStringOffsetDWOSection(), isLittleEndian(), |
| 251 | 0); |
| 252 | offset = 0; |
| 253 | uint64_t size = getStringOffsetDWOSection().size(); |
| 254 | while (offset < size) { |
| 255 | OS << format("0x%8.8x: ", offset); |
| 256 | OS << format("%8.8x\n", strOffsetExt.getU32(&offset)); |
Eric Christopher | 92f3c0b | 2013-05-06 17:50:42 +0000 | [diff] [blame] | 257 | } |
David Blaikie | 66865d6 | 2014-01-09 00:13:35 +0000 | [diff] [blame] | 258 | } |
Frederic Riss | e837ec2 | 2014-11-14 16:15:53 +0000 | [diff] [blame] | 259 | |
| 260 | if (DumpType == DIDT_All || DumpType == DIDT_AppleNames) |
| 261 | dumpAccelSection(OS, "apple_names", getAppleNamesSection(), |
| 262 | getStringSection(), isLittleEndian()); |
| 263 | |
| 264 | if (DumpType == DIDT_All || DumpType == DIDT_AppleTypes) |
| 265 | dumpAccelSection(OS, "apple_types", getAppleTypesSection(), |
| 266 | getStringSection(), isLittleEndian()); |
| 267 | |
| 268 | if (DumpType == DIDT_All || DumpType == DIDT_AppleNamespaces) |
| 269 | dumpAccelSection(OS, "apple_namespaces", getAppleNamespacesSection(), |
| 270 | getStringSection(), isLittleEndian()); |
| 271 | |
| 272 | if (DumpType == DIDT_All || DumpType == DIDT_AppleObjC) |
| 273 | dumpAccelSection(OS, "apple_objc", getAppleObjCSection(), |
| 274 | getStringSection(), isLittleEndian()); |
Benjamin Kramer | aa2f78f | 2011-09-13 19:42:23 +0000 | [diff] [blame] | 275 | } |
| 276 | |
David Blaikie | 82641be | 2015-11-17 00:39:55 +0000 | [diff] [blame] | 277 | const DWARFUnitIndex &DWARFContext::getCUIndex() { |
| 278 | if (CUIndex) |
| 279 | return *CUIndex; |
| 280 | |
| 281 | DataExtractor CUIndexData(getCUIndexSection(), isLittleEndian(), 0); |
| 282 | |
| 283 | CUIndex = llvm::make_unique<DWARFUnitIndex>(); |
| 284 | CUIndex->parse(CUIndexData); |
| 285 | return *CUIndex; |
| 286 | } |
| 287 | |
| 288 | const DWARFUnitIndex &DWARFContext::getTUIndex() { |
| 289 | if (TUIndex) |
| 290 | return *TUIndex; |
| 291 | |
| 292 | DataExtractor TUIndexData(getTUIndexSection(), isLittleEndian(), 0); |
| 293 | |
| 294 | TUIndex = llvm::make_unique<DWARFUnitIndex>(); |
| 295 | TUIndex->parse(TUIndexData); |
| 296 | return *TUIndex; |
| 297 | } |
| 298 | |
Benjamin Kramer | aa2f78f | 2011-09-13 19:42:23 +0000 | [diff] [blame] | 299 | const DWARFDebugAbbrev *DWARFContext::getDebugAbbrev() { |
| 300 | if (Abbrev) |
| 301 | return Abbrev.get(); |
| 302 | |
| 303 | DataExtractor abbrData(getAbbrevSection(), isLittleEndian(), 0); |
| 304 | |
| 305 | Abbrev.reset(new DWARFDebugAbbrev()); |
Alexey Samsonov | 4316df5 | 2014-04-25 21:10:56 +0000 | [diff] [blame] | 306 | Abbrev->extract(abbrData); |
Benjamin Kramer | aa2f78f | 2011-09-13 19:42:23 +0000 | [diff] [blame] | 307 | return Abbrev.get(); |
| 308 | } |
| 309 | |
Eric Christopher | da4b219 | 2013-01-02 23:52:13 +0000 | [diff] [blame] | 310 | const DWARFDebugAbbrev *DWARFContext::getDebugAbbrevDWO() { |
| 311 | if (AbbrevDWO) |
| 312 | return AbbrevDWO.get(); |
| 313 | |
| 314 | DataExtractor abbrData(getAbbrevDWOSection(), isLittleEndian(), 0); |
| 315 | AbbrevDWO.reset(new DWARFDebugAbbrev()); |
Alexey Samsonov | 4316df5 | 2014-04-25 21:10:56 +0000 | [diff] [blame] | 316 | AbbrevDWO->extract(abbrData); |
Eric Christopher | da4b219 | 2013-01-02 23:52:13 +0000 | [diff] [blame] | 317 | return AbbrevDWO.get(); |
| 318 | } |
| 319 | |
David Blaikie | 18e7350 | 2013-06-19 21:37:13 +0000 | [diff] [blame] | 320 | const DWARFDebugLoc *DWARFContext::getDebugLoc() { |
| 321 | if (Loc) |
| 322 | return Loc.get(); |
| 323 | |
David Blaikie | 1b5ee5d | 2013-09-23 17:42:01 +0000 | [diff] [blame] | 324 | DataExtractor LocData(getLocSection().Data, isLittleEndian(), 0); |
| 325 | Loc.reset(new DWARFDebugLoc(getLocSection().Relocs)); |
David Blaikie | 18e7350 | 2013-06-19 21:37:13 +0000 | [diff] [blame] | 326 | // assume all compile units have the same address byte size |
| 327 | if (getNumCompileUnits()) |
| 328 | Loc->parse(LocData, getCompileUnitAtIndex(0)->getAddressByteSize()); |
| 329 | return Loc.get(); |
| 330 | } |
| 331 | |
David Blaikie | 9c550ac | 2014-03-25 01:44:02 +0000 | [diff] [blame] | 332 | const DWARFDebugLocDWO *DWARFContext::getDebugLocDWO() { |
| 333 | if (LocDWO) |
| 334 | return LocDWO.get(); |
| 335 | |
| 336 | DataExtractor LocData(getLocDWOSection().Data, isLittleEndian(), 0); |
| 337 | LocDWO.reset(new DWARFDebugLocDWO()); |
| 338 | LocDWO->parse(LocData); |
| 339 | return LocDWO.get(); |
| 340 | } |
| 341 | |
Benjamin Kramer | a6002fd | 2011-09-14 01:09:52 +0000 | [diff] [blame] | 342 | const DWARFDebugAranges *DWARFContext::getDebugAranges() { |
| 343 | if (Aranges) |
| 344 | return Aranges.get(); |
| 345 | |
Benjamin Kramer | a6002fd | 2011-09-14 01:09:52 +0000 | [diff] [blame] | 346 | Aranges.reset(new DWARFDebugAranges()); |
Alexey Samsonov | a1694c1 | 2012-11-16 08:36:25 +0000 | [diff] [blame] | 347 | Aranges->generate(this); |
Benjamin Kramer | a6002fd | 2011-09-14 01:09:52 +0000 | [diff] [blame] | 348 | return Aranges.get(); |
| 349 | } |
| 350 | |
Eli Bendersky | fd08bc1 | 2013-02-05 23:30:58 +0000 | [diff] [blame] | 351 | const DWARFDebugFrame *DWARFContext::getDebugFrame() { |
| 352 | if (DebugFrame) |
| 353 | return DebugFrame.get(); |
| 354 | |
| 355 | // There's a "bug" in the DWARFv3 standard with respect to the target address |
| 356 | // size within debug frame sections. While DWARF is supposed to be independent |
| 357 | // of its container, FDEs have fields with size being "target address size", |
| 358 | // which isn't specified in DWARF in general. It's only specified for CUs, but |
| 359 | // .eh_frame can appear without a .debug_info section. Follow the example of |
| 360 | // other tools (libdwarf) and extract this from the container (ObjectFile |
| 361 | // provides this information). This problem is fixed in DWARFv4 |
| 362 | // See this dwarf-discuss discussion for more details: |
| 363 | // http://lists.dwarfstd.org/htdig.cgi/dwarf-discuss-dwarfstd.org/2011-December/001173.html |
| 364 | DataExtractor debugFrameData(getDebugFrameSection(), isLittleEndian(), |
| 365 | getAddressSize()); |
| 366 | DebugFrame.reset(new DWARFDebugFrame()); |
| 367 | DebugFrame->parse(debugFrameData); |
| 368 | return DebugFrame.get(); |
| 369 | } |
| 370 | |
Amjad Aboud | e59cc3e | 2015-11-12 09:38:54 +0000 | [diff] [blame] | 371 | const DWARFDebugMacro *DWARFContext::getDebugMacro() { |
| 372 | if (Macro) |
| 373 | return Macro.get(); |
| 374 | |
| 375 | DataExtractor MacinfoData(getMacinfoSection(), isLittleEndian(), 0); |
| 376 | Macro.reset(new DWARFDebugMacro()); |
| 377 | Macro->parse(MacinfoData); |
| 378 | return Macro.get(); |
| 379 | } |
| 380 | |
Eric Christopher | 494109b | 2012-10-16 23:46:25 +0000 | [diff] [blame] | 381 | const DWARFLineTable * |
Alexey Samsonov | 7a18c06 | 2015-05-19 21:54:32 +0000 | [diff] [blame] | 382 | DWARFContext::getLineTableForUnit(DWARFUnit *U) { |
Benjamin Kramer | 679e175 | 2011-09-15 20:43:18 +0000 | [diff] [blame] | 383 | if (!Line) |
David Blaikie | 1b5ee5d | 2013-09-23 17:42:01 +0000 | [diff] [blame] | 384 | Line.reset(new DWARFDebugLine(&getLineSection().Relocs)); |
David Blaikie | c4e2bed | 2015-11-17 21:08:05 +0000 | [diff] [blame^] | 385 | |
Alexey Samsonov | 7a18c06 | 2015-05-19 21:54:32 +0000 | [diff] [blame] | 386 | const auto *UnitDIE = U->getUnitDIE(); |
| 387 | if (UnitDIE == nullptr) |
| 388 | return nullptr; |
David Blaikie | c4e2bed | 2015-11-17 21:08:05 +0000 | [diff] [blame^] | 389 | |
Benjamin Kramer | 679e175 | 2011-09-15 20:43:18 +0000 | [diff] [blame] | 390 | unsigned stmtOffset = |
Alexey Samsonov | 7a18c06 | 2015-05-19 21:54:32 +0000 | [diff] [blame] | 391 | UnitDIE->getAttributeValueAsSectionOffset(U, DW_AT_stmt_list, -1U); |
Benjamin Kramer | 679e175 | 2011-09-15 20:43:18 +0000 | [diff] [blame] | 392 | if (stmtOffset == -1U) |
Craig Topper | 2617dcc | 2014-04-15 06:32:26 +0000 | [diff] [blame] | 393 | return nullptr; // No line table for this compile unit. |
Benjamin Kramer | 5acab50 | 2011-09-15 02:12:05 +0000 | [diff] [blame] | 394 | |
David Blaikie | c4e2bed | 2015-11-17 21:08:05 +0000 | [diff] [blame^] | 395 | stmtOffset += U->getLineTableOffset(); |
Benjamin Kramer | 679e175 | 2011-09-15 20:43:18 +0000 | [diff] [blame] | 396 | // See if the line table is cached. |
Eric Christopher | 494109b | 2012-10-16 23:46:25 +0000 | [diff] [blame] | 397 | if (const DWARFLineTable *lt = Line->getLineTable(stmtOffset)) |
Benjamin Kramer | 679e175 | 2011-09-15 20:43:18 +0000 | [diff] [blame] | 398 | return lt; |
| 399 | |
| 400 | // We have to parse it first. |
David Blaikie | c4e2bed | 2015-11-17 21:08:05 +0000 | [diff] [blame^] | 401 | DataExtractor lineData(U->getLineSection(), isLittleEndian(), |
Alexey Samsonov | 7a18c06 | 2015-05-19 21:54:32 +0000 | [diff] [blame] | 402 | U->getAddressByteSize()); |
Benjamin Kramer | 679e175 | 2011-09-15 20:43:18 +0000 | [diff] [blame] | 403 | return Line->getOrParseLineTable(lineData, stmtOffset); |
Benjamin Kramer | 5acab50 | 2011-09-15 02:12:05 +0000 | [diff] [blame] | 404 | } |
| 405 | |
Benjamin Kramer | aa2f78f | 2011-09-13 19:42:23 +0000 | [diff] [blame] | 406 | void DWARFContext::parseCompileUnits() { |
Alexey Samsonov | 8cd4c9d | 2014-10-08 00:07:53 +0000 | [diff] [blame] | 407 | CUs.parse(*this, getInfoSection()); |
Benjamin Kramer | aa2f78f | 2011-09-13 19:42:23 +0000 | [diff] [blame] | 408 | } |
Benjamin Kramer | 2602ca6 | 2011-09-15 20:43:22 +0000 | [diff] [blame] | 409 | |
David Blaikie | 03c089c | 2013-09-23 22:44:47 +0000 | [diff] [blame] | 410 | void DWARFContext::parseTypeUnits() { |
Alexey Samsonov | 1eabf98 | 2014-03-13 07:52:54 +0000 | [diff] [blame] | 411 | if (!TUs.empty()) |
| 412 | return; |
| 413 | for (const auto &I : getTypesSections()) { |
Benjamin Kramer | f5e2fc4 | 2015-05-29 19:43:39 +0000 | [diff] [blame] | 414 | TUs.emplace_back(); |
Alexey Samsonov | 8cd4c9d | 2014-10-08 00:07:53 +0000 | [diff] [blame] | 415 | TUs.back().parse(*this, I.second); |
David Blaikie | 03c089c | 2013-09-23 22:44:47 +0000 | [diff] [blame] | 416 | } |
| 417 | } |
| 418 | |
Eric Christopher | da4b219 | 2013-01-02 23:52:13 +0000 | [diff] [blame] | 419 | void DWARFContext::parseDWOCompileUnits() { |
Alexey Samsonov | 8cd4c9d | 2014-10-08 00:07:53 +0000 | [diff] [blame] | 420 | DWOCUs.parseDWO(*this, getInfoDWOSection()); |
Eric Christopher | da4b219 | 2013-01-02 23:52:13 +0000 | [diff] [blame] | 421 | } |
| 422 | |
David Blaikie | 92d9d62 | 2014-01-09 05:08:24 +0000 | [diff] [blame] | 423 | void DWARFContext::parseDWOTypeUnits() { |
Alexey Samsonov | 1eabf98 | 2014-03-13 07:52:54 +0000 | [diff] [blame] | 424 | if (!DWOTUs.empty()) |
| 425 | return; |
| 426 | for (const auto &I : getTypesDWOSections()) { |
Benjamin Kramer | f5e2fc4 | 2015-05-29 19:43:39 +0000 | [diff] [blame] | 427 | DWOTUs.emplace_back(); |
Alexey Samsonov | 8cd4c9d | 2014-10-08 00:07:53 +0000 | [diff] [blame] | 428 | DWOTUs.back().parseDWO(*this, I.second); |
David Blaikie | 92d9d62 | 2014-01-09 05:08:24 +0000 | [diff] [blame] | 429 | } |
| 430 | } |
| 431 | |
Alexey Samsonov | 45be793 | 2012-08-30 07:49:50 +0000 | [diff] [blame] | 432 | DWARFCompileUnit *DWARFContext::getCompileUnitForOffset(uint32_t Offset) { |
Alexey Samsonov | 1eabf98 | 2014-03-13 07:52:54 +0000 | [diff] [blame] | 433 | parseCompileUnits(); |
Frederic Riss | 4e126a0 | 2014-09-15 07:50:27 +0000 | [diff] [blame] | 434 | return CUs.getUnitForOffset(Offset); |
Benjamin Kramer | 2602ca6 | 2011-09-15 20:43:22 +0000 | [diff] [blame] | 435 | } |
| 436 | |
Alexey Samsonov | 45be793 | 2012-08-30 07:49:50 +0000 | [diff] [blame] | 437 | DWARFCompileUnit *DWARFContext::getCompileUnitForAddress(uint64_t Address) { |
Benjamin Kramer | 112ec17 | 2011-09-15 21:59:13 +0000 | [diff] [blame] | 438 | // First, get the offset of the compile unit. |
Alexey Samsonov | 45be793 | 2012-08-30 07:49:50 +0000 | [diff] [blame] | 439 | uint32_t CUOffset = getDebugAranges()->findAddress(Address); |
Benjamin Kramer | 2602ca6 | 2011-09-15 20:43:22 +0000 | [diff] [blame] | 440 | // Retrieve the compile unit. |
Alexey Samsonov | 45be793 | 2012-08-30 07:49:50 +0000 | [diff] [blame] | 441 | return getCompileUnitForOffset(CUOffset); |
| 442 | } |
| 443 | |
Alexey Samsonov | d010999 | 2014-04-18 21:36:39 +0000 | [diff] [blame] | 444 | static bool getFunctionNameForAddress(DWARFCompileUnit *CU, uint64_t Address, |
Alexey Samsonov | dce6734 | 2014-05-15 21:24:32 +0000 | [diff] [blame] | 445 | FunctionNameKind Kind, |
Alexey Samsonov | d010999 | 2014-04-18 21:36:39 +0000 | [diff] [blame] | 446 | std::string &FunctionName) { |
Alexey Samsonov | dce6734 | 2014-05-15 21:24:32 +0000 | [diff] [blame] | 447 | if (Kind == FunctionNameKind::None) |
| 448 | return false; |
Alexey Samsonov | d010999 | 2014-04-18 21:36:39 +0000 | [diff] [blame] | 449 | // The address may correspond to instruction in some inlined function, |
| 450 | // so we have to build the chain of inlined functions and take the |
| 451 | // name of the topmost function in it. |
| 452 | const DWARFDebugInfoEntryInlinedChain &InlinedChain = |
| 453 | CU->getInlinedChainForAddress(Address); |
| 454 | if (InlinedChain.DIEs.size() == 0) |
| 455 | return false; |
| 456 | const DWARFDebugInfoEntryMinimal &TopFunctionDIE = InlinedChain.DIEs[0]; |
Alexey Samsonov | dce6734 | 2014-05-15 21:24:32 +0000 | [diff] [blame] | 457 | if (const char *Name = |
| 458 | TopFunctionDIE.getSubroutineName(InlinedChain.U, Kind)) { |
Alexey Samsonov | d010999 | 2014-04-18 21:36:39 +0000 | [diff] [blame] | 459 | FunctionName = Name; |
| 460 | return true; |
| 461 | } |
| 462 | return false; |
| 463 | } |
| 464 | |
Alexey Samsonov | 45be793 | 2012-08-30 07:49:50 +0000 | [diff] [blame] | 465 | DILineInfo DWARFContext::getLineInfoForAddress(uint64_t Address, |
Alexey Samsonov | dce6734 | 2014-05-15 21:24:32 +0000 | [diff] [blame] | 466 | DILineInfoSpecifier Spec) { |
Alexey Samsonov | d010999 | 2014-04-18 21:36:39 +0000 | [diff] [blame] | 467 | DILineInfo Result; |
| 468 | |
Alexey Samsonov | 45be793 | 2012-08-30 07:49:50 +0000 | [diff] [blame] | 469 | DWARFCompileUnit *CU = getCompileUnitForAddress(Address); |
| 470 | if (!CU) |
Alexey Samsonov | d010999 | 2014-04-18 21:36:39 +0000 | [diff] [blame] | 471 | return Result; |
Alexey Samsonov | dce6734 | 2014-05-15 21:24:32 +0000 | [diff] [blame] | 472 | getFunctionNameForAddress(CU, Address, Spec.FNKind, Result.FunctionName); |
| 473 | if (Spec.FLIKind != FileLineInfoKind::None) { |
Frederic Riss | 101b5e2 | 2014-09-19 15:11:51 +0000 | [diff] [blame] | 474 | if (const DWARFLineTable *LineTable = getLineTableForUnit(CU)) |
| 475 | LineTable->getFileLineInfoForAddress(Address, CU->getCompilationDir(), |
| 476 | Spec.FLIKind, Result); |
Alexey Samsonov | f4462fa | 2012-07-02 05:54:45 +0000 | [diff] [blame] | 477 | } |
Alexey Samsonov | d010999 | 2014-04-18 21:36:39 +0000 | [diff] [blame] | 478 | return Result; |
Benjamin Kramer | 2602ca6 | 2011-09-15 20:43:22 +0000 | [diff] [blame] | 479 | } |
David Blaikie | a379b181 | 2011-12-20 02:50:00 +0000 | [diff] [blame] | 480 | |
Alexey Samsonov | dce6734 | 2014-05-15 21:24:32 +0000 | [diff] [blame] | 481 | DILineInfoTable |
| 482 | DWARFContext::getLineInfoForAddressRange(uint64_t Address, uint64_t Size, |
| 483 | DILineInfoSpecifier Spec) { |
Andrew Kaylor | 9a8ff81 | 2013-01-26 00:28:05 +0000 | [diff] [blame] | 484 | DILineInfoTable Lines; |
| 485 | DWARFCompileUnit *CU = getCompileUnitForAddress(Address); |
| 486 | if (!CU) |
| 487 | return Lines; |
| 488 | |
| 489 | std::string FunctionName = "<invalid>"; |
Alexey Samsonov | dce6734 | 2014-05-15 21:24:32 +0000 | [diff] [blame] | 490 | getFunctionNameForAddress(CU, Address, Spec.FNKind, FunctionName); |
Andrew Kaylor | 9a8ff81 | 2013-01-26 00:28:05 +0000 | [diff] [blame] | 491 | |
Andrew Kaylor | 9a8ff81 | 2013-01-26 00:28:05 +0000 | [diff] [blame] | 492 | // If the Specifier says we don't need FileLineInfo, just |
| 493 | // return the top-most function at the starting address. |
Alexey Samsonov | dce6734 | 2014-05-15 21:24:32 +0000 | [diff] [blame] | 494 | if (Spec.FLIKind == FileLineInfoKind::None) { |
Alexey Samsonov | d010999 | 2014-04-18 21:36:39 +0000 | [diff] [blame] | 495 | DILineInfo Result; |
| 496 | Result.FunctionName = FunctionName; |
| 497 | Lines.push_back(std::make_pair(Address, Result)); |
Andrew Kaylor | 9a8ff81 | 2013-01-26 00:28:05 +0000 | [diff] [blame] | 498 | return Lines; |
| 499 | } |
| 500 | |
Frederic Riss | ec8a5ba | 2014-09-04 06:14:40 +0000 | [diff] [blame] | 501 | const DWARFLineTable *LineTable = getLineTableForUnit(CU); |
Andrew Kaylor | 9a8ff81 | 2013-01-26 00:28:05 +0000 | [diff] [blame] | 502 | |
| 503 | // Get the index of row we're looking for in the line table. |
| 504 | std::vector<uint32_t> RowVector; |
| 505 | if (!LineTable->lookupAddressRange(Address, Size, RowVector)) |
| 506 | return Lines; |
| 507 | |
Alexey Samsonov | 1eabf98 | 2014-03-13 07:52:54 +0000 | [diff] [blame] | 508 | for (uint32_t RowIndex : RowVector) { |
Andrew Kaylor | 9a8ff81 | 2013-01-26 00:28:05 +0000 | [diff] [blame] | 509 | // Take file number and line/column from the row. |
| 510 | const DWARFDebugLine::Row &Row = LineTable->Rows[RowIndex]; |
Alexey Samsonov | d010999 | 2014-04-18 21:36:39 +0000 | [diff] [blame] | 511 | DILineInfo Result; |
Frederic Riss | 101b5e2 | 2014-09-19 15:11:51 +0000 | [diff] [blame] | 512 | LineTable->getFileNameByIndex(Row.File, CU->getCompilationDir(), |
| 513 | Spec.FLIKind, Result.FileName); |
Alexey Samsonov | d010999 | 2014-04-18 21:36:39 +0000 | [diff] [blame] | 514 | Result.FunctionName = FunctionName; |
| 515 | Result.Line = Row.Line; |
| 516 | Result.Column = Row.Column; |
| 517 | Lines.push_back(std::make_pair(Row.Address, Result)); |
Andrew Kaylor | 9a8ff81 | 2013-01-26 00:28:05 +0000 | [diff] [blame] | 518 | } |
| 519 | |
| 520 | return Lines; |
| 521 | } |
| 522 | |
Alexey Samsonov | dce6734 | 2014-05-15 21:24:32 +0000 | [diff] [blame] | 523 | DIInliningInfo |
| 524 | DWARFContext::getInliningInfoForAddress(uint64_t Address, |
| 525 | DILineInfoSpecifier Spec) { |
Alexey Samsonov | 5c39fdf | 2014-04-18 22:22:44 +0000 | [diff] [blame] | 526 | DIInliningInfo InliningInfo; |
| 527 | |
Alexey Samsonov | c942e6b | 2012-09-04 08:12:33 +0000 | [diff] [blame] | 528 | DWARFCompileUnit *CU = getCompileUnitForAddress(Address); |
| 529 | if (!CU) |
Alexey Samsonov | 5c39fdf | 2014-04-18 22:22:44 +0000 | [diff] [blame] | 530 | return InliningInfo; |
Alexey Samsonov | c942e6b | 2012-09-04 08:12:33 +0000 | [diff] [blame] | 531 | |
Alexey Samsonov | 5c39fdf | 2014-04-18 22:22:44 +0000 | [diff] [blame] | 532 | const DWARFLineTable *LineTable = nullptr; |
Alexey Samsonov | 3211e61 | 2013-08-06 10:49:15 +0000 | [diff] [blame] | 533 | const DWARFDebugInfoEntryInlinedChain &InlinedChain = |
Alexey Samsonov | c942e6b | 2012-09-04 08:12:33 +0000 | [diff] [blame] | 534 | CU->getInlinedChainForAddress(Address); |
Alexey Samsonov | 5c39fdf | 2014-04-18 22:22:44 +0000 | [diff] [blame] | 535 | if (InlinedChain.DIEs.size() == 0) { |
| 536 | // If there is no DIE for address (e.g. it is in unavailable .dwo file), |
| 537 | // try to at least get file/line info from symbol table. |
Alexey Samsonov | dce6734 | 2014-05-15 21:24:32 +0000 | [diff] [blame] | 538 | if (Spec.FLIKind != FileLineInfoKind::None) { |
Alexey Samsonov | 5c39fdf | 2014-04-18 22:22:44 +0000 | [diff] [blame] | 539 | DILineInfo Frame; |
Frederic Riss | ec8a5ba | 2014-09-04 06:14:40 +0000 | [diff] [blame] | 540 | LineTable = getLineTableForUnit(CU); |
Frederic Riss | 101b5e2 | 2014-09-19 15:11:51 +0000 | [diff] [blame] | 541 | if (LineTable && |
| 542 | LineTable->getFileLineInfoForAddress(Address, CU->getCompilationDir(), |
| 543 | Spec.FLIKind, Frame)) |
Alexey Samsonov | 5c39fdf | 2014-04-18 22:22:44 +0000 | [diff] [blame] | 544 | InliningInfo.addFrame(Frame); |
Alexey Samsonov | 5c39fdf | 2014-04-18 22:22:44 +0000 | [diff] [blame] | 545 | } |
| 546 | return InliningInfo; |
| 547 | } |
Alexey Samsonov | c942e6b | 2012-09-04 08:12:33 +0000 | [diff] [blame] | 548 | |
Alexey Samsonov | c942e6b | 2012-09-04 08:12:33 +0000 | [diff] [blame] | 549 | uint32_t CallFile = 0, CallLine = 0, CallColumn = 0; |
Alexey Samsonov | 3211e61 | 2013-08-06 10:49:15 +0000 | [diff] [blame] | 550 | for (uint32_t i = 0, n = InlinedChain.DIEs.size(); i != n; i++) { |
| 551 | const DWARFDebugInfoEntryMinimal &FunctionDIE = InlinedChain.DIEs[i]; |
Alexey Samsonov | d010999 | 2014-04-18 21:36:39 +0000 | [diff] [blame] | 552 | DILineInfo Frame; |
Alexey Samsonov | c942e6b | 2012-09-04 08:12:33 +0000 | [diff] [blame] | 553 | // Get function name if necessary. |
Alexey Samsonov | dce6734 | 2014-05-15 21:24:32 +0000 | [diff] [blame] | 554 | if (const char *Name = |
| 555 | FunctionDIE.getSubroutineName(InlinedChain.U, Spec.FNKind)) |
| 556 | Frame.FunctionName = Name; |
| 557 | if (Spec.FLIKind != FileLineInfoKind::None) { |
Alexey Samsonov | c942e6b | 2012-09-04 08:12:33 +0000 | [diff] [blame] | 558 | if (i == 0) { |
| 559 | // For the topmost frame, initialize the line table of this |
| 560 | // compile unit and fetch file/line info from it. |
Frederic Riss | ec8a5ba | 2014-09-04 06:14:40 +0000 | [diff] [blame] | 561 | LineTable = getLineTableForUnit(CU); |
Alexey Samsonov | c942e6b | 2012-09-04 08:12:33 +0000 | [diff] [blame] | 562 | // For the topmost routine, get file/line info from line table. |
Frederic Riss | 101b5e2 | 2014-09-19 15:11:51 +0000 | [diff] [blame] | 563 | if (LineTable) |
| 564 | LineTable->getFileLineInfoForAddress(Address, CU->getCompilationDir(), |
| 565 | Spec.FLIKind, Frame); |
Alexey Samsonov | c942e6b | 2012-09-04 08:12:33 +0000 | [diff] [blame] | 566 | } else { |
| 567 | // Otherwise, use call file, call line and call column from |
| 568 | // previous DIE in inlined chain. |
Frederic Riss | 101b5e2 | 2014-09-19 15:11:51 +0000 | [diff] [blame] | 569 | if (LineTable) |
| 570 | LineTable->getFileNameByIndex(CallFile, CU->getCompilationDir(), |
| 571 | Spec.FLIKind, Frame.FileName); |
Alexey Samsonov | d010999 | 2014-04-18 21:36:39 +0000 | [diff] [blame] | 572 | Frame.Line = CallLine; |
| 573 | Frame.Column = CallColumn; |
Alexey Samsonov | c942e6b | 2012-09-04 08:12:33 +0000 | [diff] [blame] | 574 | } |
| 575 | // Get call file/line/column of a current DIE. |
| 576 | if (i + 1 < n) { |
David Blaikie | 07e2244 | 2013-09-23 22:44:40 +0000 | [diff] [blame] | 577 | FunctionDIE.getCallerFrame(InlinedChain.U, CallFile, CallLine, |
Alexey Samsonov | 3211e61 | 2013-08-06 10:49:15 +0000 | [diff] [blame] | 578 | CallColumn); |
Alexey Samsonov | c942e6b | 2012-09-04 08:12:33 +0000 | [diff] [blame] | 579 | } |
| 580 | } |
Alexey Samsonov | c942e6b | 2012-09-04 08:12:33 +0000 | [diff] [blame] | 581 | InliningInfo.addFrame(Frame); |
| 582 | } |
| 583 | return InliningInfo; |
| 584 | } |
| 585 | |
Alexey Samsonov | 068fc8a | 2013-04-23 10:17:34 +0000 | [diff] [blame] | 586 | static bool consumeCompressedDebugSectionHeader(StringRef &data, |
| 587 | uint64_t &OriginalSize) { |
| 588 | // Consume "ZLIB" prefix. |
| 589 | if (!data.startswith("ZLIB")) |
| 590 | return false; |
| 591 | data = data.substr(4); |
| 592 | // Consume uncompressed section size (big-endian 8 bytes). |
| 593 | DataExtractor extractor(data, false, 8); |
| 594 | uint32_t Offset = 0; |
| 595 | OriginalSize = extractor.getU64(&Offset); |
| 596 | if (Offset == 0) |
| 597 | return false; |
| 598 | data = data.substr(Offset); |
| 599 | return true; |
| 600 | } |
| 601 | |
Keno Fischer | c780e8e | 2015-05-21 21:24:32 +0000 | [diff] [blame] | 602 | DWARFContextInMemory::DWARFContextInMemory(const object::ObjectFile &Obj, |
| 603 | const LoadedObjectInfo *L) |
Rafael Espindola | a04bb5b | 2014-07-31 20:19:36 +0000 | [diff] [blame] | 604 | : IsLittleEndian(Obj.isLittleEndian()), |
| 605 | AddressSize(Obj.getBytesInAddress()) { |
| 606 | for (const SectionRef &Section : Obj.sections()) { |
Eric Christopher | 7370b55 | 2012-11-12 21:40:38 +0000 | [diff] [blame] | 607 | StringRef name; |
Alexey Samsonov | 063eb3f | 2014-03-13 13:52:54 +0000 | [diff] [blame] | 608 | Section.getName(name); |
David Majnemer | dac3985 | 2014-09-26 22:32:16 +0000 | [diff] [blame] | 609 | // Skip BSS and Virtual sections, they aren't interesting. |
Rafael Espindola | 8029127 | 2014-10-08 15:28:58 +0000 | [diff] [blame] | 610 | bool IsBSS = Section.isBSS(); |
David Majnemer | dac3985 | 2014-09-26 22:32:16 +0000 | [diff] [blame] | 611 | if (IsBSS) |
| 612 | continue; |
Rafael Espindola | 8029127 | 2014-10-08 15:28:58 +0000 | [diff] [blame] | 613 | bool IsVirtual = Section.isVirtual(); |
David Majnemer | dac3985 | 2014-09-26 22:32:16 +0000 | [diff] [blame] | 614 | if (IsVirtual) |
| 615 | continue; |
Eric Christopher | 7370b55 | 2012-11-12 21:40:38 +0000 | [diff] [blame] | 616 | StringRef data; |
Keno Fischer | c780e8e | 2015-05-21 21:24:32 +0000 | [diff] [blame] | 617 | |
Lang Hames | 2e88f4f | 2015-07-28 17:52:11 +0000 | [diff] [blame] | 618 | section_iterator RelocatedSection = Section.getRelocatedSection(); |
Keno Fischer | c780e8e | 2015-05-21 21:24:32 +0000 | [diff] [blame] | 619 | // Try to obtain an already relocated version of this section. |
| 620 | // Else use the unrelocated section from the object file. We'll have to |
| 621 | // apply relocations ourselves later. |
Lang Hames | 2e88f4f | 2015-07-28 17:52:11 +0000 | [diff] [blame] | 622 | if (!L || !L->getLoadedSectionContents(*RelocatedSection,data)) |
Keno Fischer | c780e8e | 2015-05-21 21:24:32 +0000 | [diff] [blame] | 623 | Section.getContents(data); |
Eric Christopher | 7370b55 | 2012-11-12 21:40:38 +0000 | [diff] [blame] | 624 | |
Eric Christopher | 7370b55 | 2012-11-12 21:40:38 +0000 | [diff] [blame] | 625 | name = name.substr(name.find_first_not_of("._")); // Skip . and _ prefixes. |
Alexey Samsonov | 3d0e3ed | 2013-04-17 14:27:04 +0000 | [diff] [blame] | 626 | |
Alexey Samsonov | 068fc8a | 2013-04-23 10:17:34 +0000 | [diff] [blame] | 627 | // Check if debug info section is compressed with zlib. |
| 628 | if (name.startswith("zdebug_")) { |
| 629 | uint64_t OriginalSize; |
| 630 | if (!zlib::isAvailable() || |
| 631 | !consumeCompressedDebugSectionHeader(data, OriginalSize)) |
| 632 | continue; |
David Blaikie | a505f24 | 2014-04-05 21:26:44 +0000 | [diff] [blame] | 633 | UncompressedSections.resize(UncompressedSections.size() + 1); |
| 634 | if (zlib::uncompress(data, UncompressedSections.back(), OriginalSize) != |
| 635 | zlib::StatusOK) { |
| 636 | UncompressedSections.pop_back(); |
Alexey Samsonov | 068fc8a | 2013-04-23 10:17:34 +0000 | [diff] [blame] | 637 | continue; |
David Blaikie | a505f24 | 2014-04-05 21:26:44 +0000 | [diff] [blame] | 638 | } |
Alexey Samsonov | 068fc8a | 2013-04-23 10:17:34 +0000 | [diff] [blame] | 639 | // Make data point to uncompressed section contents and save its contents. |
| 640 | name = name.substr(1); |
David Blaikie | a505f24 | 2014-04-05 21:26:44 +0000 | [diff] [blame] | 641 | data = UncompressedSections.back(); |
Alexey Samsonov | 068fc8a | 2013-04-23 10:17:34 +0000 | [diff] [blame] | 642 | } |
| 643 | |
Alexey Samsonov | 063eb3f | 2014-03-13 13:52:54 +0000 | [diff] [blame] | 644 | StringRef *SectionData = |
Eric Christopher | 4c7e6ba | 2013-09-25 23:02:41 +0000 | [diff] [blame] | 645 | StringSwitch<StringRef *>(name) |
| 646 | .Case("debug_info", &InfoSection.Data) |
| 647 | .Case("debug_abbrev", &AbbrevSection) |
| 648 | .Case("debug_loc", &LocSection.Data) |
| 649 | .Case("debug_line", &LineSection.Data) |
| 650 | .Case("debug_aranges", &ARangeSection) |
| 651 | .Case("debug_frame", &DebugFrameSection) |
| 652 | .Case("debug_str", &StringSection) |
| 653 | .Case("debug_ranges", &RangeSection) |
Amjad Aboud | e59cc3e | 2015-11-12 09:38:54 +0000 | [diff] [blame] | 654 | .Case("debug_macinfo", &MacinfoSection) |
Eric Christopher | 4c7e6ba | 2013-09-25 23:02:41 +0000 | [diff] [blame] | 655 | .Case("debug_pubnames", &PubNamesSection) |
| 656 | .Case("debug_pubtypes", &PubTypesSection) |
| 657 | .Case("debug_gnu_pubnames", &GnuPubNamesSection) |
| 658 | .Case("debug_gnu_pubtypes", &GnuPubTypesSection) |
| 659 | .Case("debug_info.dwo", &InfoDWOSection.Data) |
| 660 | .Case("debug_abbrev.dwo", &AbbrevDWOSection) |
David Blaikie | 9c550ac | 2014-03-25 01:44:02 +0000 | [diff] [blame] | 661 | .Case("debug_loc.dwo", &LocDWOSection.Data) |
David Blaikie | 1d4736e | 2014-02-24 23:58:54 +0000 | [diff] [blame] | 662 | .Case("debug_line.dwo", &LineDWOSection.Data) |
Eric Christopher | 4c7e6ba | 2013-09-25 23:02:41 +0000 | [diff] [blame] | 663 | .Case("debug_str.dwo", &StringDWOSection) |
| 664 | .Case("debug_str_offsets.dwo", &StringOffsetDWOSection) |
| 665 | .Case("debug_addr", &AddrSection) |
Frederic Riss | 7c50047 | 2014-11-14 19:30:08 +0000 | [diff] [blame] | 666 | .Case("apple_names", &AppleNamesSection.Data) |
| 667 | .Case("apple_types", &AppleTypesSection.Data) |
| 668 | .Case("apple_namespaces", &AppleNamespacesSection.Data) |
| 669 | .Case("apple_namespac", &AppleNamespacesSection.Data) |
| 670 | .Case("apple_objc", &AppleObjCSection.Data) |
David Blaikie | 65a8efe | 2015-11-11 19:28:21 +0000 | [diff] [blame] | 671 | .Case("debug_cu_index", &CUIndexSection) |
David Blaikie | 51c4028 | 2015-11-11 19:40:49 +0000 | [diff] [blame] | 672 | .Case("debug_tu_index", &TUIndexSection) |
Eric Christopher | 4c7e6ba | 2013-09-25 23:02:41 +0000 | [diff] [blame] | 673 | // Any more debug info sections go here. |
Craig Topper | 2617dcc | 2014-04-15 06:32:26 +0000 | [diff] [blame] | 674 | .Default(nullptr); |
Alexey Samsonov | 063eb3f | 2014-03-13 13:52:54 +0000 | [diff] [blame] | 675 | if (SectionData) { |
| 676 | *SectionData = data; |
Rafael Espindola | 4f60a38 | 2013-05-30 03:05:14 +0000 | [diff] [blame] | 677 | if (name == "debug_ranges") { |
| 678 | // FIXME: Use the other dwo range section when we emit it. |
| 679 | RangeDWOSection = data; |
| 680 | } |
David Blaikie | 03c089c | 2013-09-23 22:44:47 +0000 | [diff] [blame] | 681 | } else if (name == "debug_types") { |
David Blaikie | 427e435 | 2013-09-23 23:39:55 +0000 | [diff] [blame] | 682 | // Find debug_types data by section rather than name as there are |
| 683 | // multiple, comdat grouped, debug_types sections. |
Alexey Samsonov | 063eb3f | 2014-03-13 13:52:54 +0000 | [diff] [blame] | 684 | TypesSections[Section].Data = data; |
David Blaikie | 92d9d62 | 2014-01-09 05:08:24 +0000 | [diff] [blame] | 685 | } else if (name == "debug_types.dwo") { |
Alexey Samsonov | 063eb3f | 2014-03-13 13:52:54 +0000 | [diff] [blame] | 686 | TypesDWOSections[Section].Data = data; |
Eric Christopher | da4b219 | 2013-01-02 23:52:13 +0000 | [diff] [blame] | 687 | } |
Eric Christopher | 7370b55 | 2012-11-12 21:40:38 +0000 | [diff] [blame] | 688 | |
Rafael Espindola | a04bb5b | 2014-07-31 20:19:36 +0000 | [diff] [blame] | 689 | if (RelocatedSection == Obj.section_end()) |
Rafael Espindola | 4f60a38 | 2013-05-30 03:05:14 +0000 | [diff] [blame] | 690 | continue; |
| 691 | |
| 692 | StringRef RelSecName; |
Keno Fischer | c780e8e | 2015-05-21 21:24:32 +0000 | [diff] [blame] | 693 | StringRef RelSecData; |
Rafael Espindola | 4f60a38 | 2013-05-30 03:05:14 +0000 | [diff] [blame] | 694 | RelocatedSection->getName(RelSecName); |
Keno Fischer | c780e8e | 2015-05-21 21:24:32 +0000 | [diff] [blame] | 695 | |
| 696 | // If the section we're relocating was relocated already by the JIT, |
| 697 | // then we used the relocated version above, so we do not need to process |
| 698 | // relocations for it now. |
Lang Hames | 2e88f4f | 2015-07-28 17:52:11 +0000 | [diff] [blame] | 699 | if (L && L->getLoadedSectionContents(*RelocatedSection,RelSecData)) |
Keno Fischer | c780e8e | 2015-05-21 21:24:32 +0000 | [diff] [blame] | 700 | continue; |
| 701 | |
Frederic Riss | 7bb1226 | 2015-08-23 04:44:21 +0000 | [diff] [blame] | 702 | // In Mach-o files, the relocations do not need to be applied if |
| 703 | // there is no load offset to apply. The value read at the |
| 704 | // relocation point already factors in the section address |
| 705 | // (actually applying the relocations will produce wrong results |
| 706 | // as the section address will be added twice). |
| 707 | if (!L && dyn_cast<MachOObjectFile>(&Obj)) |
| 708 | continue; |
| 709 | |
Rafael Espindola | 4f60a38 | 2013-05-30 03:05:14 +0000 | [diff] [blame] | 710 | RelSecName = RelSecName.substr( |
| 711 | RelSecName.find_first_not_of("._")); // Skip . and _ prefixes. |
| 712 | |
Andrew Kaylor | d55d701 | 2013-01-25 22:50:58 +0000 | [diff] [blame] | 713 | // TODO: Add support for relocations in other sections as needed. |
| 714 | // Record relocations for the debug_info and debug_line sections. |
Rafael Espindola | 4f60a38 | 2013-05-30 03:05:14 +0000 | [diff] [blame] | 715 | RelocAddrMap *Map = StringSwitch<RelocAddrMap*>(RelSecName) |
David Blaikie | 1b5ee5d | 2013-09-23 17:42:01 +0000 | [diff] [blame] | 716 | .Case("debug_info", &InfoSection.Relocs) |
| 717 | .Case("debug_loc", &LocSection.Relocs) |
| 718 | .Case("debug_info.dwo", &InfoDWOSection.Relocs) |
| 719 | .Case("debug_line", &LineSection.Relocs) |
Frederic Riss | 7c50047 | 2014-11-14 19:30:08 +0000 | [diff] [blame] | 720 | .Case("apple_names", &AppleNamesSection.Relocs) |
| 721 | .Case("apple_types", &AppleTypesSection.Relocs) |
| 722 | .Case("apple_namespaces", &AppleNamespacesSection.Relocs) |
| 723 | .Case("apple_namespac", &AppleNamespacesSection.Relocs) |
| 724 | .Case("apple_objc", &AppleObjCSection.Relocs) |
Craig Topper | 2617dcc | 2014-04-15 06:32:26 +0000 | [diff] [blame] | 725 | .Default(nullptr); |
David Blaikie | 03c089c | 2013-09-23 22:44:47 +0000 | [diff] [blame] | 726 | if (!Map) { |
David Blaikie | 427e435 | 2013-09-23 23:39:55 +0000 | [diff] [blame] | 727 | // Find debug_types relocs by section rather than name as there are |
| 728 | // multiple, comdat grouped, debug_types sections. |
David Blaikie | 92d9d62 | 2014-01-09 05:08:24 +0000 | [diff] [blame] | 729 | if (RelSecName == "debug_types") |
| 730 | Map = &TypesSections[*RelocatedSection].Relocs; |
| 731 | else if (RelSecName == "debug_types.dwo") |
| 732 | Map = &TypesDWOSections[*RelocatedSection].Relocs; |
| 733 | else |
| 734 | continue; |
David Blaikie | 03c089c | 2013-09-23 22:44:47 +0000 | [diff] [blame] | 735 | } |
Eric Christopher | 7370b55 | 2012-11-12 21:40:38 +0000 | [diff] [blame] | 736 | |
Alexey Samsonov | 063eb3f | 2014-03-13 13:52:54 +0000 | [diff] [blame] | 737 | if (Section.relocation_begin() != Section.relocation_end()) { |
Rafael Espindola | 8029127 | 2014-10-08 15:28:58 +0000 | [diff] [blame] | 738 | uint64_t SectionSize = RelocatedSection->getSize(); |
Alexey Samsonov | aa4d295 | 2014-03-14 14:22:49 +0000 | [diff] [blame] | 739 | for (const RelocationRef &Reloc : Section.relocations()) { |
Rafael Espindola | 96d071c | 2015-06-29 23:29:12 +0000 | [diff] [blame] | 740 | uint64_t Address = Reloc.getOffset(); |
Rafael Espindola | 99c041b | 2015-06-30 01:53:01 +0000 | [diff] [blame] | 741 | uint64_t Type = Reloc.getType(); |
Andrew Kaylor | d55d701 | 2013-01-25 22:50:58 +0000 | [diff] [blame] | 742 | uint64_t SymAddr = 0; |
Keno Fischer | c780e8e | 2015-05-21 21:24:32 +0000 | [diff] [blame] | 743 | uint64_t SectionLoadAddress = 0; |
David Majnemer | 5fbe324 | 2014-10-08 06:38:50 +0000 | [diff] [blame] | 744 | object::symbol_iterator Sym = Reloc.getSymbol(); |
Rafael Espindola | 63a88ce | 2015-06-19 17:54:28 +0000 | [diff] [blame] | 745 | object::section_iterator RSec = Obj.section_end(); |
Keno Fischer | c780e8e | 2015-05-21 21:24:32 +0000 | [diff] [blame] | 746 | |
| 747 | // First calculate the address of the symbol or section as it appears |
| 748 | // in the objct file |
| 749 | if (Sym != Obj.symbol_end()) { |
Rafael Espindola | ed067c4 | 2015-07-03 18:19:00 +0000 | [diff] [blame] | 750 | ErrorOr<uint64_t> SymAddrOrErr = Sym->getAddress(); |
| 751 | if (std::error_code EC = SymAddrOrErr.getError()) { |
| 752 | errs() << "error: failed to compute symbol address: " |
| 753 | << EC.message() << '\n'; |
| 754 | continue; |
| 755 | } |
| 756 | SymAddr = *SymAddrOrErr; |
Keno Fischer | c780e8e | 2015-05-21 21:24:32 +0000 | [diff] [blame] | 757 | // Also remember what section this symbol is in for later |
Rafael Espindola | 8bab889 | 2015-08-07 23:27:14 +0000 | [diff] [blame] | 758 | RSec = *Sym->getSection(); |
Rafael Espindola | 63a88ce | 2015-06-19 17:54:28 +0000 | [diff] [blame] | 759 | } else if (auto *MObj = dyn_cast<MachOObjectFile>(&Obj)) { |
| 760 | // MachO also has relocations that point to sections and |
| 761 | // scattered relocations. |
Frederic Riss | f6402bf | 2015-07-31 20:22:50 +0000 | [diff] [blame] | 762 | auto RelocInfo = MObj->getRelocation(Reloc.getRawDataRefImpl()); |
| 763 | if (MObj->isRelocationScattered(RelocInfo)) { |
| 764 | // FIXME: it's not clear how to correctly handle scattered |
| 765 | // relocations. |
| 766 | continue; |
| 767 | } else { |
| 768 | RSec = MObj->getRelocationSection(Reloc.getRawDataRefImpl()); |
| 769 | SymAddr = RSec->getAddress(); |
| 770 | } |
Rafael Espindola | 63a88ce | 2015-06-19 17:54:28 +0000 | [diff] [blame] | 771 | } |
Keno Fischer | c780e8e | 2015-05-21 21:24:32 +0000 | [diff] [blame] | 772 | |
| 773 | // If we are given load addresses for the sections, we need to adjust: |
| 774 | // SymAddr = (Address of Symbol Or Section in File) - |
| 775 | // (Address of Section in File) + |
| 776 | // (Load Address of Section) |
| 777 | if (L != nullptr && RSec != Obj.section_end()) { |
Benjamin Kramer | df005cb | 2015-08-08 18:27:36 +0000 | [diff] [blame] | 778 | // RSec is now either the section being targeted or the section |
| 779 | // containing the symbol being targeted. In either case, |
Keno Fischer | c780e8e | 2015-05-21 21:24:32 +0000 | [diff] [blame] | 780 | // we need to perform the same computation. |
| 781 | StringRef SecName; |
| 782 | RSec->getName(SecName); |
Lang Hames | 2e88f4f | 2015-07-28 17:52:11 +0000 | [diff] [blame] | 783 | // llvm::dbgs() << "Name: '" << SecName |
| 784 | // << "', RSec: " << RSec->getRawDataRefImpl() |
| 785 | // << ", Section: " << Section.getRawDataRefImpl() << "\n"; |
| 786 | SectionLoadAddress = L->getSectionLoadAddress(*RSec); |
Keno Fischer | c780e8e | 2015-05-21 21:24:32 +0000 | [diff] [blame] | 787 | if (SectionLoadAddress != 0) |
| 788 | SymAddr += SectionLoadAddress - RSec->getAddress(); |
| 789 | } |
Eric Christopher | 7370b55 | 2012-11-12 21:40:38 +0000 | [diff] [blame] | 790 | |
Eric Christopher | 47e079d | 2014-10-06 06:55:55 +0000 | [diff] [blame] | 791 | object::RelocVisitor V(Obj); |
David Majnemer | 5fbe324 | 2014-10-08 06:38:50 +0000 | [diff] [blame] | 792 | object::RelocToApply R(V.visit(Type, Reloc, SymAddr)); |
Eric Christopher | 7370b55 | 2012-11-12 21:40:38 +0000 | [diff] [blame] | 793 | if (V.error()) { |
| 794 | SmallString<32> Name; |
Rafael Espindola | 41bb432 | 2015-06-30 04:08:37 +0000 | [diff] [blame] | 795 | Reloc.getTypeName(Name); |
Eric Christopher | 7370b55 | 2012-11-12 21:40:38 +0000 | [diff] [blame] | 796 | errs() << "error: failed to compute relocation: " |
| 797 | << Name << "\n"; |
| 798 | continue; |
| 799 | } |
| 800 | |
| 801 | if (Address + R.Width > SectionSize) { |
| 802 | errs() << "error: " << R.Width << "-byte relocation starting " |
| 803 | << Address << " bytes into section " << name << " which is " |
| 804 | << SectionSize << " bytes long.\n"; |
| 805 | continue; |
| 806 | } |
| 807 | if (R.Width > 8) { |
| 808 | errs() << "error: can't handle a relocation of more than 8 bytes at " |
| 809 | "a time.\n"; |
| 810 | continue; |
| 811 | } |
| 812 | DEBUG(dbgs() << "Writing " << format("%p", R.Value) |
| 813 | << " at " << format("%p", Address) |
| 814 | << " with width " << format("%d", R.Width) |
| 815 | << "\n"); |
Eric Christopher | da4b219 | 2013-01-02 23:52:13 +0000 | [diff] [blame] | 816 | Map->insert(std::make_pair(Address, std::make_pair(R.Width, R.Value))); |
Eric Christopher | 7370b55 | 2012-11-12 21:40:38 +0000 | [diff] [blame] | 817 | } |
| 818 | } |
| 819 | } |
| 820 | } |
| 821 | |
David Blaikie | a379b181 | 2011-12-20 02:50:00 +0000 | [diff] [blame] | 822 | void DWARFContextInMemory::anchor() { } |