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gerrit-public.fairphone.software / toolchain / llvm-project / d934cb8806dbddcbdf70fadf9b125af626fbcac3 / . / llvm / lib / MC / MCObjectFileInfo.cpp
blob: 687ad3dc83affdb3a07519ace3a3f71fb4c916f8 [file] [log] [blame]
Jeroen Ketema5a02dc42016-01-04 12:22:34 +0000[diff] [blame]1//===-- MCObjectFileInfo.cpp - Object File Information --------------------===//
Evan Cheng76792992011-07-20 05:58:47 +0000[diff] [blame]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
10#include "llvm/MC/MCObjectFileInfo.h"
David Blaikiebc563272013-12-13 21:33:40 +0000[diff] [blame]11#include "llvm/ADT/StringExtras.h"
Chandler Carruth8a8cd2b2014-01-07 11:48:04 +0000[diff] [blame]12#include "llvm/ADT/Triple.h"
Joerg Sonnenberger94cbb662014-05-13 17:58:13 +0000[diff] [blame]13#include "llvm/MC/MCAsmInfo.h"
Evan Cheng76792992011-07-20 05:58:47 +0000[diff] [blame]14#include "llvm/MC/MCContext.h"
15#include "llvm/MC/MCSection.h"
16#include "llvm/MC/MCSectionCOFF.h"
17#include "llvm/MC/MCSectionELF.h"
18#include "llvm/MC/MCSectionMachO.h"
Dan Gohman18eafb62017-02-22 01:23:18 +0000[diff] [blame]19#include "llvm/MC/MCSectionWasm.h"
Reid Kleckner1f13d472015-09-03 16:41:50 +0000[diff] [blame]20#include "llvm/Support/COFF.h"
Eugene Zelenkod96089b2017-02-14 00:33:36 +0000[diff] [blame]21#include "llvm/Support/ELF.h"
Hans Wennborg083ca9b2015-10-06 23:24:35 +0000[diff] [blame]22
Evan Cheng76792992011-07-20 05:58:47 +0000[diff] [blame]23using namespace llvm;
24
Rafael Espindolabecdf632014-06-20 22:37:01 +0000[diff] [blame]25static bool useCompactUnwind(const Triple &T) {
26 // Only on darwin.
27 if (!T.isOSDarwin())
28 return false;
29
30 // aarch64 always has it.
Tim Northovere19bed72014-07-23 12:32:47 +0000[diff] [blame]31 if (T.getArch() == Triple::aarch64)
Rafael Espindolabecdf632014-06-20 22:37:01 +0000[diff] [blame]32 return true;
33
Tim Northoverf8e47e42015-10-28 22:56:36 +0000[diff] [blame]34 // armv7k always has it.
Tim Northover042a6c12016-01-27 19:32:29 +0000[diff] [blame]35 if (T.isWatchABI())
Tim Northoverf8e47e42015-10-28 22:56:36 +0000[diff] [blame]36 return true;
37
Rafael Espindolabecdf632014-06-20 22:37:01 +0000[diff] [blame]38 // Use it on newer version of OS X.
39 if (T.isMacOSX() && !T.isMacOSXVersionLT(10, 6))
40 return true;
41
Rafael Espindolac3510c72014-06-20 22:40:55 +0000[diff] [blame]42 // And the iOS simulator.
43 if (T.isiOS() &&
44 (T.getArch() == Triple::x86_64 || T.getArch() == Triple::x86))
45 return true;
46
Rafael Espindolabecdf632014-06-20 22:37:01 +0000[diff] [blame]47 return false;
48}
49
Benjamin Kramerc321e532016-06-08 19:09:22 +0000[diff] [blame]50void MCObjectFileInfo::initMachOMCObjectFileInfo(const Triple &T) {
Evan Cheng76792992011-07-20 05:58:47 +0000[diff] [blame]51 // MachO
Evan Cheng76792992011-07-20 05:58:47 +0000[diff] [blame]52 SupportsWeakOmittedEHFrame = false;
53
Rafael Espindola889d7bb2015-11-06 15:30:45 +0000[diff] [blame]54 EHFrameSection = Ctx->getMachOSection(
55 "__TEXT", "__eh_frame",
56 MachO::S_COALESCED | MachO::S_ATTR_NO_TOC |
57 MachO::S_ATTR_STRIP_STATIC_SYMS | MachO::S_ATTR_LIVE_SUPPORT,
58 SectionKind::getReadOnly());
59
Tim Northovere19bed72014-07-23 12:32:47 +0000[diff] [blame]60 if (T.isOSDarwin() && T.getArch() == Triple::aarch64)
Tim Northover00ed9962014-03-29 10:18:08 +0000[diff] [blame]61 SupportsCompactUnwindWithoutEHFrame = true;
62
Tim Northover042a6c12016-01-27 19:32:29 +0000[diff] [blame]63 if (T.isWatchABI())
Tim Northoverf8e47e42015-10-28 22:56:36 +0000[diff] [blame]64 OmitDwarfIfHaveCompactUnwind = true;
65
Evan Chengbbf3b0d2011-07-20 19:50:42 +0000[diff] [blame]66 PersonalityEncoding = dwarf::DW_EH_PE_indirect | dwarf::DW_EH_PE_pcrel
67 | dwarf::DW_EH_PE_sdata4;
Rafael Espindolaaa7851d2014-05-12 13:47:05 +0000[diff] [blame]68 LSDAEncoding = FDECFIEncoding = dwarf::DW_EH_PE_pcrel;
Evan Chengbbf3b0d2011-07-20 19:50:42 +0000[diff] [blame]69 TTypeEncoding = dwarf::DW_EH_PE_indirect | dwarf::DW_EH_PE_pcrel |
70 dwarf::DW_EH_PE_sdata4;
71
Evan Cheng76792992011-07-20 05:58:47 +0000[diff] [blame]72 // .comm doesn't support alignment before Leopard.
73 if (T.isMacOSX() && T.isMacOSXVersionLT(10, 5))
74 CommDirectiveSupportsAlignment = false;
75
76 TextSection // .text
77 = Ctx->getMachOSection("__TEXT", "__text",
David Majnemer7b583052014-03-07 07:36:05 +0000[diff] [blame]78 MachO::S_ATTR_PURE_INSTRUCTIONS,
Evan Cheng76792992011-07-20 05:58:47 +0000[diff] [blame]79 SectionKind::getText());
80 DataSection // .data
Rafael Espindola449711c2015-11-18 06:02:15 +0000[diff] [blame]81 = Ctx->getMachOSection("__DATA", "__data", 0, SectionKind::getData());
Evan Cheng76792992011-07-20 05:58:47 +0000[diff] [blame]82
NAKAMURA Takumi68fa6f92013-09-21 02:34:45 +0000[diff] [blame]83 // BSSSection might not be expected initialized on msvc.
Craig Topperbb694de2014-04-13 04:57:38 +0000[diff] [blame]84 BSSSection = nullptr;
NAKAMURA Takumi68fa6f92013-09-21 02:34:45 +0000[diff] [blame]85
Evan Cheng76792992011-07-20 05:58:47 +0000[diff] [blame]86 TLSDataSection // .tdata
Rafael Espindola449711c2015-11-18 06:02:15 +0000[diff] [blame]87 = Ctx->getMachOSection("__DATA", "__thread_data",
88 MachO::S_THREAD_LOCAL_REGULAR,
89 SectionKind::getData());
Evan Cheng76792992011-07-20 05:58:47 +0000[diff] [blame]90 TLSBSSSection // .tbss
91 = Ctx->getMachOSection("__DATA", "__thread_bss",
David Majnemer7b583052014-03-07 07:36:05 +0000[diff] [blame]92 MachO::S_THREAD_LOCAL_ZEROFILL,
Evan Cheng76792992011-07-20 05:58:47 +0000[diff] [blame]93 SectionKind::getThreadBSS());
94
95 // TODO: Verify datarel below.
96 TLSTLVSection // .tlv
Rafael Espindola449711c2015-11-18 06:02:15 +0000[diff] [blame]97 = Ctx->getMachOSection("__DATA", "__thread_vars",
98 MachO::S_THREAD_LOCAL_VARIABLES,
99 SectionKind::getData());
Evan Cheng76792992011-07-20 05:58:47 +0000[diff] [blame]100
Rafael Espindola449711c2015-11-18 06:02:15 +0000[diff] [blame]101 TLSThreadInitSection = Ctx->getMachOSection(
102 "__DATA", "__thread_init", MachO::S_THREAD_LOCAL_INIT_FUNCTION_POINTERS,
103 SectionKind::getData());
Evan Cheng76792992011-07-20 05:58:47 +0000[diff] [blame]104
105 CStringSection // .cstring
106 = Ctx->getMachOSection("__TEXT", "__cstring",
David Majnemer7b583052014-03-07 07:36:05 +0000[diff] [blame]107 MachO::S_CSTRING_LITERALS,
Evan Cheng76792992011-07-20 05:58:47 +0000[diff] [blame]108 SectionKind::getMergeable1ByteCString());
109 UStringSection
110 = Ctx->getMachOSection("__TEXT","__ustring", 0,
111 SectionKind::getMergeable2ByteCString());
112 FourByteConstantSection // .literal4
113 = Ctx->getMachOSection("__TEXT", "__literal4",
David Majnemer7b583052014-03-07 07:36:05 +0000[diff] [blame]114 MachO::S_4BYTE_LITERALS,
Evan Cheng76792992011-07-20 05:58:47 +0000[diff] [blame]115 SectionKind::getMergeableConst4());
116 EightByteConstantSection // .literal8
117 = Ctx->getMachOSection("__TEXT", "__literal8",
David Majnemer7b583052014-03-07 07:36:05 +0000[diff] [blame]118 MachO::S_8BYTE_LITERALS,
Evan Cheng76792992011-07-20 05:58:47 +0000[diff] [blame]119 SectionKind::getMergeableConst8());
120
Rafael Espindola1f3de492014-02-13 23:16:11 +0000[diff] [blame]121 SixteenByteConstantSection // .literal16
122 = Ctx->getMachOSection("__TEXT", "__literal16",
David Majnemer7b583052014-03-07 07:36:05 +0000[diff] [blame]123 MachO::S_16BYTE_LITERALS,
Rafael Espindola1f3de492014-02-13 23:16:11 +0000[diff] [blame]124 SectionKind::getMergeableConst16());
Evan Cheng76792992011-07-20 05:58:47 +0000[diff] [blame]125
126 ReadOnlySection // .const
127 = Ctx->getMachOSection("__TEXT", "__const", 0,
128 SectionKind::getReadOnly());
129
Akira Hatanaka8ad73992015-10-15 05:28:38 +0000[diff] [blame]130 // If the target is not powerpc, map the coal sections to the non-coal
131 // sections.
132 //
133 // "__TEXT/__textcoal_nt" => section "__TEXT/__text"
134 // "__TEXT/__const_coal" => section "__TEXT/__const"
135 // "__DATA/__datacoal_nt" => section "__DATA/__data"
136 Triple::ArchType ArchTy = T.getArch();
137
138 if (ArchTy == Triple::ppc || ArchTy == Triple::ppc64) {
139 TextCoalSection
140 = Ctx->getMachOSection("__TEXT", "__textcoal_nt",
141 MachO::S_COALESCED |
142 MachO::S_ATTR_PURE_INSTRUCTIONS,
143 SectionKind::getText());
144 ConstTextCoalSection
145 = Ctx->getMachOSection("__TEXT", "__const_coal",
146 MachO::S_COALESCED,
147 SectionKind::getReadOnly());
Rafael Espindola449711c2015-11-18 06:02:15 +0000[diff] [blame]148 DataCoalSection = Ctx->getMachOSection(
149 "__DATA", "__datacoal_nt", MachO::S_COALESCED, SectionKind::getData());
Akira Hatanaka8ad73992015-10-15 05:28:38 +0000[diff] [blame]150 } else {
151 TextCoalSection = TextSection;
152 ConstTextCoalSection = ReadOnlySection;
153 DataCoalSection = DataSection;
154 }
155
Evan Cheng76792992011-07-20 05:58:47 +0000[diff] [blame]156 ConstDataSection // .const_data
157 = Ctx->getMachOSection("__DATA", "__const", 0,
158 SectionKind::getReadOnlyWithRel());
Evan Cheng76792992011-07-20 05:58:47 +0000[diff] [blame]159 DataCommonSection
160 = Ctx->getMachOSection("__DATA","__common",
David Majnemer7b583052014-03-07 07:36:05 +0000[diff] [blame]161 MachO::S_ZEROFILL,
Evan Cheng76792992011-07-20 05:58:47 +0000[diff] [blame]162 SectionKind::getBSS());
163 DataBSSSection
David Majnemer7b583052014-03-07 07:36:05 +0000[diff] [blame]164 = Ctx->getMachOSection("__DATA","__bss", MachO::S_ZEROFILL,
Evan Cheng76792992011-07-20 05:58:47 +0000[diff] [blame]165 SectionKind::getBSS());
166
167
168 LazySymbolPointerSection
169 = Ctx->getMachOSection("__DATA", "__la_symbol_ptr",
David Majnemer7b583052014-03-07 07:36:05 +0000[diff] [blame]170 MachO::S_LAZY_SYMBOL_POINTERS,
Evan Cheng76792992011-07-20 05:58:47 +0000[diff] [blame]171 SectionKind::getMetadata());
172 NonLazySymbolPointerSection
173 = Ctx->getMachOSection("__DATA", "__nl_symbol_ptr",
David Majnemer7b583052014-03-07 07:36:05 +0000[diff] [blame]174 MachO::S_NON_LAZY_SYMBOL_POINTERS,
Evan Cheng76792992011-07-20 05:58:47 +0000[diff] [blame]175 SectionKind::getMetadata());
176
Tim Northover5c3140f2016-04-25 21:12:04 +0000[diff] [blame]177 ThreadLocalPointerSection
178 = Ctx->getMachOSection("__DATA", "__thread_ptr",
179 MachO::S_THREAD_LOCAL_VARIABLE_POINTERS,
180 SectionKind::getMetadata());
181
Evan Cheng76792992011-07-20 05:58:47 +0000[diff] [blame]182 // Exception Handling.
183 LSDASection = Ctx->getMachOSection("__TEXT", "__gcc_except_tab", 0,
184 SectionKind::getReadOnlyWithRel());
185
Craig Topperbb694de2014-04-13 04:57:38 +0000[diff] [blame]186 COFFDebugSymbolsSection = nullptr;
Reid Klecknerf3b9ba42016-01-29 18:16:43 +0000[diff] [blame]187 COFFDebugTypesSection = nullptr;
Timur Iskhodzhanovf166f6c2014-01-30 01:39:17 +0000[diff] [blame]188
Rafael Espindolabecdf632014-06-20 22:37:01 +0000[diff] [blame]189 if (useCompactUnwind(T)) {
Evan Cheng76792992011-07-20 05:58:47 +0000[diff] [blame]190 CompactUnwindSection =
Rafael Espindolabecdf632014-06-20 22:37:01 +0000[diff] [blame]191 Ctx->getMachOSection("__LD", "__compact_unwind", MachO::S_ATTR_DEBUG,
192 SectionKind::getReadOnly());
Evan Cheng76792992011-07-20 05:58:47 +0000[diff] [blame]193
Bill Wendling2d1df6b2013-04-10 21:42:06 +0000[diff] [blame]194 if (T.getArch() == Triple::x86_64 || T.getArch() == Triple::x86)
Tim Northoverf8e47e42015-10-28 22:56:36 +0000[diff] [blame]195 CompactUnwindDwarfEHFrameOnly = 0x04000000; // UNWIND_X86_64_MODE_DWARF
Tim Northovere19bed72014-07-23 12:32:47 +0000[diff] [blame]196 else if (T.getArch() == Triple::aarch64)
Tim Northoverf8e47e42015-10-28 22:56:36 +0000[diff] [blame]197 CompactUnwindDwarfEHFrameOnly = 0x03000000; // UNWIND_ARM64_MODE_DWARF
198 else if (T.getArch() == Triple::arm || T.getArch() == Triple::thumb)
199 CompactUnwindDwarfEHFrameOnly = 0x04000000; // UNWIND_ARM_MODE_DWARF
Bill Wendling2d1df6b2013-04-10 21:42:06 +0000[diff] [blame]200 }
201
Evan Cheng76792992011-07-20 05:58:47 +0000[diff] [blame]202 // Debug Information.
Eric Christopher4996c702011-11-07 09:24:32 +0000[diff] [blame]203 DwarfAccelNamesSection =
Rafael Espindola6ed58a22015-03-10 21:16:18 +0000[diff] [blame]204 Ctx->getMachOSection("__DWARF", "__apple_names", MachO::S_ATTR_DEBUG,
Rafael Espindola6b9998b2015-03-10 22:00:25 +0000[diff] [blame]205 SectionKind::getMetadata(), "names_begin");
Eric Christopher4996c702011-11-07 09:24:32 +0000[diff] [blame]206 DwarfAccelObjCSection =
Rafael Espindola6ed58a22015-03-10 21:16:18 +0000[diff] [blame]207 Ctx->getMachOSection("__DWARF", "__apple_objc", MachO::S_ATTR_DEBUG,
Rafael Espindola6b9998b2015-03-10 22:00:25 +0000[diff] [blame]208 SectionKind::getMetadata(), "objc_begin");
Eric Christopher4996c702011-11-07 09:24:32 +0000[diff] [blame]209 // 16 character section limit...
210 DwarfAccelNamespaceSection =
Rafael Espindola6ed58a22015-03-10 21:16:18 +0000[diff] [blame]211 Ctx->getMachOSection("__DWARF", "__apple_namespac", MachO::S_ATTR_DEBUG,
Rafael Espindola6b9998b2015-03-10 22:00:25 +0000[diff] [blame]212 SectionKind::getMetadata(), "namespac_begin");
Eric Christopher4996c702011-11-07 09:24:32 +0000[diff] [blame]213 DwarfAccelTypesSection =
Rafael Espindola6ed58a22015-03-10 21:16:18 +0000[diff] [blame]214 Ctx->getMachOSection("__DWARF", "__apple_types", MachO::S_ATTR_DEBUG,
Rafael Espindola6b9998b2015-03-10 22:00:25 +0000[diff] [blame]215 SectionKind::getMetadata(), "types_begin");
Jim Grosbachdc1e36e2012-05-11 01:41:30 +0000[diff] [blame]216
Evan Cheng76792992011-07-20 05:58:47 +0000[diff] [blame]217 DwarfAbbrevSection =
Rafael Espindola6ed58a22015-03-10 21:16:18 +0000[diff] [blame]218 Ctx->getMachOSection("__DWARF", "__debug_abbrev", MachO::S_ATTR_DEBUG,
Rafael Espindola6b9998b2015-03-10 22:00:25 +0000[diff] [blame]219 SectionKind::getMetadata(), "section_abbrev");
Evan Cheng76792992011-07-20 05:58:47 +0000[diff] [blame]220 DwarfInfoSection =
Rafael Espindola6ed58a22015-03-10 21:16:18 +0000[diff] [blame]221 Ctx->getMachOSection("__DWARF", "__debug_info", MachO::S_ATTR_DEBUG,
Rafael Espindola6b9998b2015-03-10 22:00:25 +0000[diff] [blame]222 SectionKind::getMetadata(), "section_info");
Evan Cheng76792992011-07-20 05:58:47 +0000[diff] [blame]223 DwarfLineSection =
Rafael Espindola6ed58a22015-03-10 21:16:18 +0000[diff] [blame]224 Ctx->getMachOSection("__DWARF", "__debug_line", MachO::S_ATTR_DEBUG,
Rafael Espindola6b9998b2015-03-10 22:00:25 +0000[diff] [blame]225 SectionKind::getMetadata(), "section_line");
Evan Cheng76792992011-07-20 05:58:47 +0000[diff] [blame]226 DwarfFrameSection =
Rafael Espindola6ed58a22015-03-10 21:16:18 +0000[diff] [blame]227 Ctx->getMachOSection("__DWARF", "__debug_frame", MachO::S_ATTR_DEBUG,
228 SectionKind::getMetadata());
Krzysztof Parzyszek228daa62013-02-12 18:00:14 +0000[diff] [blame]229 DwarfPubNamesSection =
Rafael Espindola6ed58a22015-03-10 21:16:18 +0000[diff] [blame]230 Ctx->getMachOSection("__DWARF", "__debug_pubnames", MachO::S_ATTR_DEBUG,
231 SectionKind::getMetadata());
Evan Cheng76792992011-07-20 05:58:47 +0000[diff] [blame]232 DwarfPubTypesSection =
Rafael Espindola6ed58a22015-03-10 21:16:18 +0000[diff] [blame]233 Ctx->getMachOSection("__DWARF", "__debug_pubtypes", MachO::S_ATTR_DEBUG,
234 SectionKind::getMetadata());
Eric Christopherb0e76942013-09-09 20:03:14 +0000[diff] [blame]235 DwarfGnuPubNamesSection =
Rafael Espindola6ed58a22015-03-10 21:16:18 +0000[diff] [blame]236 Ctx->getMachOSection("__DWARF", "__debug_gnu_pubn", MachO::S_ATTR_DEBUG,
237 SectionKind::getMetadata());
Eric Christopherb0e76942013-09-09 20:03:14 +0000[diff] [blame]238 DwarfGnuPubTypesSection =
Rafael Espindola6ed58a22015-03-10 21:16:18 +0000[diff] [blame]239 Ctx->getMachOSection("__DWARF", "__debug_gnu_pubt", MachO::S_ATTR_DEBUG,
240 SectionKind::getMetadata());
Evan Cheng76792992011-07-20 05:58:47 +0000[diff] [blame]241 DwarfStrSection =
Rafael Espindola6ed58a22015-03-10 21:16:18 +0000[diff] [blame]242 Ctx->getMachOSection("__DWARF", "__debug_str", MachO::S_ATTR_DEBUG,
Rafael Espindola6b9998b2015-03-10 22:00:25 +0000[diff] [blame]243 SectionKind::getMetadata(), "info_string");
Evan Cheng76792992011-07-20 05:58:47 +0000[diff] [blame]244 DwarfLocSection =
Rafael Espindola6ed58a22015-03-10 21:16:18 +0000[diff] [blame]245 Ctx->getMachOSection("__DWARF", "__debug_loc", MachO::S_ATTR_DEBUG,
Rafael Espindola6b9998b2015-03-10 22:00:25 +0000[diff] [blame]246 SectionKind::getMetadata(), "section_debug_loc");
Evan Cheng76792992011-07-20 05:58:47 +0000[diff] [blame]247 DwarfARangesSection =
Rafael Espindola6ed58a22015-03-10 21:16:18 +0000[diff] [blame]248 Ctx->getMachOSection("__DWARF", "__debug_aranges", MachO::S_ATTR_DEBUG,
249 SectionKind::getMetadata());
Evan Cheng76792992011-07-20 05:58:47 +0000[diff] [blame]250 DwarfRangesSection =
Rafael Espindola6ed58a22015-03-10 21:16:18 +0000[diff] [blame]251 Ctx->getMachOSection("__DWARF", "__debug_ranges", MachO::S_ATTR_DEBUG,
Rafael Espindola6b9998b2015-03-10 22:00:25 +0000[diff] [blame]252 SectionKind::getMetadata(), "debug_range");
Amjad Aboudd7cfb482016-01-07 14:28:20 +0000[diff] [blame]253 DwarfMacinfoSection =
254 Ctx->getMachOSection("__DWARF", "__debug_macinfo", MachO::S_ATTR_DEBUG,
Amjad Aboud8bbce8a2016-02-01 14:09:41 +0000[diff] [blame]255 SectionKind::getMetadata(), "debug_macinfo");
Evan Cheng76792992011-07-20 05:58:47 +0000[diff] [blame]256 DwarfDebugInlineSection =
Rafael Espindola6ed58a22015-03-10 21:16:18 +0000[diff] [blame]257 Ctx->getMachOSection("__DWARF", "__debug_inlined", MachO::S_ATTR_DEBUG,
258 SectionKind::getMetadata());
David Blaikieb073cb92015-12-02 06:21:34 +0000[diff] [blame]259 DwarfCUIndexSection =
260 Ctx->getMachOSection("__DWARF", "__debug_cu_index", MachO::S_ATTR_DEBUG,
261 SectionKind::getMetadata());
David Blaikie24c8ac92015-12-05 03:05:45 +0000[diff] [blame]262 DwarfTUIndexSection =
263 Ctx->getMachOSection("__DWARF", "__debug_tu_index", MachO::S_ATTR_DEBUG,
264 SectionKind::getMetadata());
Rafael Espindola6ed58a22015-03-10 21:16:18 +0000[diff] [blame]265 StackMapSection = Ctx->getMachOSection("__LLVM_STACKMAPS", "__llvm_stackmaps",
266 0, SectionKind::getMetadata());
Evan Cheng76792992011-07-20 05:58:47 +0000[diff] [blame]267
Sanjoy Dasc63244d2015-06-15 18:44:08 +0000[diff] [blame]268 FaultMapSection = Ctx->getMachOSection("__LLVM_FAULTMAPS", "__llvm_faultmaps",
269 0, SectionKind::getMetadata());
270
Evan Cheng76792992011-07-20 05:58:47 +0000[diff] [blame]271 TLSExtraDataSection = TLSTLVSection;
272}
273
Benjamin Kramerc321e532016-06-08 19:09:22 +0000[diff] [blame]274void MCObjectFileInfo::initELFMCObjectFileInfo(const Triple &T) {
Joerg Sonnenberger7c442522014-04-30 23:23:14 +0000[diff] [blame]275 switch (T.getArch()) {
276 case Triple::mips:
277 case Triple::mipsel:
Rafael Espindolab9b7ae02013-04-03 03:13:19 +0000[diff] [blame]278 FDECFIEncoding = dwarf::DW_EH_PE_sdata4;
Joerg Sonnenberger7c442522014-04-30 23:23:14 +0000[diff] [blame]279 break;
280 case Triple::mips64:
281 case Triple::mips64el:
Rafael Espindolab9b7ae02013-04-03 03:13:19 +0000[diff] [blame]282 FDECFIEncoding = dwarf::DW_EH_PE_sdata8;
Joerg Sonnenberger7c442522014-04-30 23:23:14 +0000[diff] [blame]283 break;
Rafael Espindolad11591b2014-11-27 17:13:56 +0000[diff] [blame]284 case Triple::x86_64:
285 FDECFIEncoding = dwarf::DW_EH_PE_pcrel |
286 ((CMModel == CodeModel::Large) ? dwarf::DW_EH_PE_sdata8
287 : dwarf::DW_EH_PE_sdata4);
Rafael Espindolad11591b2014-11-27 17:13:56 +0000[diff] [blame]288 break;
Joerg Sonnenberger7c442522014-04-30 23:23:14 +0000[diff] [blame]289 default:
Rafael Espindolaef9d3492013-03-15 05:51:57 +0000[diff] [blame]290 FDECFIEncoding = dwarf::DW_EH_PE_pcrel | dwarf::DW_EH_PE_sdata4;
Joerg Sonnenberger7c442522014-04-30 23:23:14 +0000[diff] [blame]291 break;
292 }
Rafael Espindolaef9d3492013-03-15 05:51:57 +0000[diff] [blame]293
Joerg Sonnenberger7c442522014-04-30 23:23:14 +0000[diff] [blame]294 switch (T.getArch()) {
Joerg Sonnenbergercf86ce12014-05-07 07:49:34 +0000[diff] [blame]295 case Triple::arm:
296 case Triple::armeb:
297 case Triple::thumb:
298 case Triple::thumbeb:
Joerg Sonnenberger94cbb662014-05-13 17:58:13 +0000[diff] [blame]299 if (Ctx->getAsmInfo()->getExceptionHandlingType() == ExceptionHandling::ARM)
300 break;
301 // Fallthrough if not using EHABI
Justin Bognercd1d5aa2016-08-17 20:30:52 +0000[diff] [blame]302 LLVM_FALLTHROUGH;
Joerg Sonnenberger6637d4e2014-07-24 19:25:16 +0000[diff] [blame]303 case Triple::ppc:
Joerg Sonnenberger7c442522014-04-30 23:23:14 +0000[diff] [blame]304 case Triple::x86:
Rafael Espindola699281c2016-05-18 11:58:50 +0000[diff] [blame]305 PersonalityEncoding = PositionIndependent
306 ? dwarf::DW_EH_PE_indirect |
307 dwarf::DW_EH_PE_pcrel |
308 dwarf::DW_EH_PE_sdata4
309 : dwarf::DW_EH_PE_absptr;
310 LSDAEncoding = PositionIndependent
311 ? dwarf::DW_EH_PE_pcrel | dwarf::DW_EH_PE_sdata4
312 : dwarf::DW_EH_PE_absptr;
313 TTypeEncoding = PositionIndependent
314 ? dwarf::DW_EH_PE_indirect | dwarf::DW_EH_PE_pcrel |
315 dwarf::DW_EH_PE_sdata4
316 : dwarf::DW_EH_PE_absptr;
Joerg Sonnenberger7c442522014-04-30 23:23:14 +0000[diff] [blame]317 break;
318 case Triple::x86_64:
Rafael Espindola699281c2016-05-18 11:58:50 +0000[diff] [blame]319 if (PositionIndependent) {
Evan Chengbbf3b0d2011-07-20 19:50:42 +0000[diff] [blame]320 PersonalityEncoding = dwarf::DW_EH_PE_indirect | dwarf::DW_EH_PE_pcrel |
321 ((CMModel == CodeModel::Small || CMModel == CodeModel::Medium)
322 ? dwarf::DW_EH_PE_sdata4 : dwarf::DW_EH_PE_sdata8);
323 LSDAEncoding = dwarf::DW_EH_PE_pcrel |
324 (CMModel == CodeModel::Small
325 ? dwarf::DW_EH_PE_sdata4 : dwarf::DW_EH_PE_sdata8);
Evan Chengbbf3b0d2011-07-20 19:50:42 +0000[diff] [blame]326 TTypeEncoding = dwarf::DW_EH_PE_indirect | dwarf::DW_EH_PE_pcrel |
327 ((CMModel == CodeModel::Small || CMModel == CodeModel::Medium)
328 ? dwarf::DW_EH_PE_sdata4 : dwarf::DW_EH_PE_sdata8);
329 } else {
330 PersonalityEncoding =
331 (CMModel == CodeModel::Small || CMModel == CodeModel::Medium)
332 ? dwarf::DW_EH_PE_udata4 : dwarf::DW_EH_PE_absptr;
333 LSDAEncoding = (CMModel == CodeModel::Small)
334 ? dwarf::DW_EH_PE_udata4 : dwarf::DW_EH_PE_absptr;
Evan Chengbbf3b0d2011-07-20 19:50:42 +0000[diff] [blame]335 TTypeEncoding = (CMModel == CodeModel::Small)
336 ? dwarf::DW_EH_PE_udata4 : dwarf::DW_EH_PE_absptr;
337 }
Krzysztof Parzyszek1711f2d2016-04-25 21:28:52 +0000[diff] [blame]338 break;
Krzysztof Parzyszek3e282292016-04-25 21:05:19 +0000[diff] [blame]339 case Triple::hexagon:
340 PersonalityEncoding = dwarf::DW_EH_PE_absptr;
341 LSDAEncoding = dwarf::DW_EH_PE_absptr;
342 FDECFIEncoding = dwarf::DW_EH_PE_absptr;
343 TTypeEncoding = dwarf::DW_EH_PE_absptr;
Rafael Espindola699281c2016-05-18 11:58:50 +0000[diff] [blame]344 if (PositionIndependent) {
Krzysztof Parzyszek3e282292016-04-25 21:05:19 +0000[diff] [blame]345 PersonalityEncoding |= dwarf::DW_EH_PE_indirect | dwarf::DW_EH_PE_pcrel;
346 LSDAEncoding |= dwarf::DW_EH_PE_pcrel;
347 FDECFIEncoding |= dwarf::DW_EH_PE_pcrel;
348 TTypeEncoding |= dwarf::DW_EH_PE_indirect | dwarf::DW_EH_PE_pcrel;
349 }
Joerg Sonnenberger7c442522014-04-30 23:23:14 +0000[diff] [blame]350 break;
351 case Triple::aarch64:
352 case Triple::aarch64_be:
Tim Northovere0e3aef2013-01-31 12:12:40 +0000[diff] [blame]353 // The small model guarantees static code/data size < 4GB, but not where it
354 // will be in memory. Most of these could end up >2GB away so even a signed
355 // pc-relative 32-bit address is insufficient, theoretically.
Rafael Espindola699281c2016-05-18 11:58:50 +0000[diff] [blame]356 if (PositionIndependent) {
Tim Northovere0e3aef2013-01-31 12:12:40 +0000[diff] [blame]357 PersonalityEncoding = dwarf::DW_EH_PE_indirect | dwarf::DW_EH_PE_pcrel |
358 dwarf::DW_EH_PE_sdata8;
359 LSDAEncoding = dwarf::DW_EH_PE_pcrel | dwarf::DW_EH_PE_sdata8;
Tim Northovere0e3aef2013-01-31 12:12:40 +0000[diff] [blame]360 TTypeEncoding = dwarf::DW_EH_PE_indirect | dwarf::DW_EH_PE_pcrel |
361 dwarf::DW_EH_PE_sdata8;
362 } else {
363 PersonalityEncoding = dwarf::DW_EH_PE_absptr;
364 LSDAEncoding = dwarf::DW_EH_PE_absptr;
Tim Northovere0e3aef2013-01-31 12:12:40 +0000[diff] [blame]365 TTypeEncoding = dwarf::DW_EH_PE_absptr;
366 }
Joerg Sonnenberger7c442522014-04-30 23:23:14 +0000[diff] [blame]367 break;
Jacques Pienaarea9f25a2016-03-01 21:21:42 +0000[diff] [blame]368 case Triple::lanai:
369 LSDAEncoding = dwarf::DW_EH_PE_absptr;
370 PersonalityEncoding = dwarf::DW_EH_PE_absptr;
371 TTypeEncoding = dwarf::DW_EH_PE_absptr;
372 break;
Logan Chienc0029812014-05-30 16:48:56 +0000[diff] [blame]373 case Triple::mips:
374 case Triple::mipsel:
Petar Jovanovic35f05742014-11-05 22:42:31 +0000[diff] [blame]375 case Triple::mips64:
376 case Triple::mips64el:
Daniel Sandersc95f3f82015-06-02 20:32:50 +0000[diff] [blame]377 // MIPS uses indirect pointer to refer personality functions and types, so
378 // that the eh_frame section can be read-only. DW.ref.personality will be
379 // generated for relocation.
Logan Chienc0029812014-05-30 16:48:56 +0000[diff] [blame]380 PersonalityEncoding = dwarf::DW_EH_PE_indirect;
Daniel Sandersc95f3f82015-06-02 20:32:50 +0000[diff] [blame]381 // FIXME: The N64 ABI probably ought to use DW_EH_PE_sdata8 but we can't
382 // identify N64 from just a triple.
383 TTypeEncoding = dwarf::DW_EH_PE_indirect | dwarf::DW_EH_PE_pcrel |
384 dwarf::DW_EH_PE_sdata4;
385 // We don't support PC-relative LSDA references in GAS so we use the default
386 // DW_EH_PE_absptr for those.
Daniel Sanders5dcbac52016-08-04 15:36:03 +0000[diff] [blame]387
388 // FreeBSD must be explicit about the data size and using pcrel since it's
389 // assembler/linker won't do the automatic conversion that the Linux tools
390 // do.
391 if (T.isOSFreeBSD()) {
392 PersonalityEncoding |= dwarf::DW_EH_PE_pcrel | dwarf::DW_EH_PE_sdata4;
393 LSDAEncoding = dwarf::DW_EH_PE_pcrel | dwarf::DW_EH_PE_sdata4;
394 }
Logan Chienc0029812014-05-30 16:48:56 +0000[diff] [blame]395 break;
Joerg Sonnenberger7c442522014-04-30 23:23:14 +0000[diff] [blame]396 case Triple::ppc64:
397 case Triple::ppc64le:
Adhemerval Zanella1ae22482013-01-09 17:08:15 +0000[diff] [blame]398 PersonalityEncoding = dwarf::DW_EH_PE_indirect | dwarf::DW_EH_PE_pcrel |
399 dwarf::DW_EH_PE_udata8;
Adhemerval Zanella1ae22482013-01-09 17:08:15 +0000[diff] [blame]400 LSDAEncoding = dwarf::DW_EH_PE_pcrel | dwarf::DW_EH_PE_udata8;
Adhemerval Zanella1ae22482013-01-09 17:08:15 +0000[diff] [blame]401 TTypeEncoding = dwarf::DW_EH_PE_indirect | dwarf::DW_EH_PE_pcrel |
402 dwarf::DW_EH_PE_udata8;
Joerg Sonnenberger7c442522014-04-30 23:23:14 +0000[diff] [blame]403 break;
Douglas Katzman9160e782015-04-29 20:30:57 +0000[diff] [blame]404 case Triple::sparcel:
Joerg Sonnenberger7c442522014-04-30 23:23:14 +0000[diff] [blame]405 case Triple::sparc:
Rafael Espindola699281c2016-05-18 11:58:50 +0000[diff] [blame]406 if (PositionIndependent) {
Jakob Stoklund Olesen83c67732014-01-28 02:52:26 +0000[diff] [blame]407 LSDAEncoding = dwarf::DW_EH_PE_pcrel | dwarf::DW_EH_PE_sdata4;
408 PersonalityEncoding = dwarf::DW_EH_PE_indirect | dwarf::DW_EH_PE_pcrel |
409 dwarf::DW_EH_PE_sdata4;
Jakob Stoklund Olesen83c67732014-01-28 02:52:26 +0000[diff] [blame]410 TTypeEncoding = dwarf::DW_EH_PE_indirect | dwarf::DW_EH_PE_pcrel |
411 dwarf::DW_EH_PE_sdata4;
412 } else {
413 LSDAEncoding = dwarf::DW_EH_PE_absptr;
414 PersonalityEncoding = dwarf::DW_EH_PE_absptr;
Jakob Stoklund Olesen83c67732014-01-28 02:52:26 +0000[diff] [blame]415 TTypeEncoding = dwarf::DW_EH_PE_absptr;
416 }
Joerg Sonnenbergerfa9cf652014-04-30 23:36:24 +0000[diff] [blame]417 break;
Joerg Sonnenberger7c442522014-04-30 23:23:14 +0000[diff] [blame]418 case Triple::sparcv9:
Jakob Stoklund Olesen83c67732014-01-28 02:52:26 +0000[diff] [blame]419 LSDAEncoding = dwarf::DW_EH_PE_pcrel | dwarf::DW_EH_PE_sdata4;
Rafael Espindola699281c2016-05-18 11:58:50 +0000[diff] [blame]420 if (PositionIndependent) {
Jakob Stoklund Olesen83c67732014-01-28 02:52:26 +0000[diff] [blame]421 PersonalityEncoding = dwarf::DW_EH_PE_indirect | dwarf::DW_EH_PE_pcrel |
422 dwarf::DW_EH_PE_sdata4;
Jakob Stoklund Olesen83c67732014-01-28 02:52:26 +0000[diff] [blame]423 TTypeEncoding = dwarf::DW_EH_PE_indirect | dwarf::DW_EH_PE_pcrel |
424 dwarf::DW_EH_PE_sdata4;
425 } else {
426 PersonalityEncoding = dwarf::DW_EH_PE_absptr;
Jakob Stoklund Olesen83c67732014-01-28 02:52:26 +0000[diff] [blame]427 TTypeEncoding = dwarf::DW_EH_PE_absptr;
428 }
Joerg Sonnenbergerfa9cf652014-04-30 23:36:24 +0000[diff] [blame]429 break;
Joerg Sonnenberger7c442522014-04-30 23:23:14 +0000[diff] [blame]430 case Triple::systemz:
Ulrich Weigand0213e7f2013-05-06 16:11:12 +0000[diff] [blame]431 // All currently-defined code models guarantee that 4-byte PC-relative
432 // values will be in range.
Rafael Espindola699281c2016-05-18 11:58:50 +0000[diff] [blame]433 if (PositionIndependent) {
Ulrich Weigande7c6dfe2013-05-06 17:28:30 +0000[diff] [blame]434 PersonalityEncoding = dwarf::DW_EH_PE_indirect | dwarf::DW_EH_PE_pcrel |
435 dwarf::DW_EH_PE_sdata4;
436 LSDAEncoding = dwarf::DW_EH_PE_pcrel | dwarf::DW_EH_PE_sdata4;
Ulrich Weigande7c6dfe2013-05-06 17:28:30 +0000[diff] [blame]437 TTypeEncoding = dwarf::DW_EH_PE_indirect | dwarf::DW_EH_PE_pcrel |
438 dwarf::DW_EH_PE_sdata4;
439 } else {
440 PersonalityEncoding = dwarf::DW_EH_PE_absptr;
441 LSDAEncoding = dwarf::DW_EH_PE_absptr;
Ulrich Weigande7c6dfe2013-05-06 17:28:30 +0000[diff] [blame]442 TTypeEncoding = dwarf::DW_EH_PE_absptr;
443 }
Joerg Sonnenbergerfa9cf652014-04-30 23:36:24 +0000[diff] [blame]444 break;
Joerg Sonnenberger7c442522014-04-30 23:23:14 +0000[diff] [blame]445 default:
446 break;
Evan Chengbbf3b0d2011-07-20 19:50:42 +0000[diff] [blame]447 }
448
Rafael Espindola889d7bb2015-11-06 15:30:45 +0000[diff] [blame]449 unsigned EHSectionType = T.getArch() == Triple::x86_64
450 ? ELF::SHT_X86_64_UNWIND
451 : ELF::SHT_PROGBITS;
Rafael Espindolab20b7062015-11-06 13:35:35 +0000[diff] [blame]452
David Chisnall07f8d3e2012-02-17 17:31:15 +0000[diff] [blame]453 // Solaris requires different flags for .eh_frame to seemingly every other
454 // platform.
Rafael Espindola889d7bb2015-11-06 15:30:45 +0000[diff] [blame]455 unsigned EHSectionFlags = ELF::SHF_ALLOC;
Rafael Espindolab20b7062015-11-06 13:35:35 +0000[diff] [blame]456 if (T.isOSSolaris() && T.getArch() != Triple::x86_64)
457 EHSectionFlags |= ELF::SHF_WRITE;
David Chisnall07f8d3e2012-02-17 17:31:15 +0000[diff] [blame]458
Evan Cheng76792992011-07-20 05:58:47 +0000[diff] [blame]459 // ELF
Rafael Espindolaba31e272015-01-29 17:33:21 +0000[diff] [blame]460 BSSSection = Ctx->getELFSection(".bss", ELF::SHT_NOBITS,
461 ELF::SHF_WRITE | ELF::SHF_ALLOC);
Evan Cheng76792992011-07-20 05:58:47 +0000[diff] [blame]462
Rafael Espindolaba31e272015-01-29 17:33:21 +0000[diff] [blame]463 TextSection = Ctx->getELFSection(".text", ELF::SHT_PROGBITS,
464 ELF::SHF_EXECINSTR | ELF::SHF_ALLOC);
Evan Cheng76792992011-07-20 05:58:47 +0000[diff] [blame]465
Rafael Espindolaba31e272015-01-29 17:33:21 +0000[diff] [blame]466 DataSection = Ctx->getELFSection(".data", ELF::SHT_PROGBITS,
467 ELF::SHF_WRITE | ELF::SHF_ALLOC);
Evan Cheng76792992011-07-20 05:58:47 +0000[diff] [blame]468
469 ReadOnlySection =
Rafael Espindolaba31e272015-01-29 17:33:21 +0000[diff] [blame]470 Ctx->getELFSection(".rodata", ELF::SHT_PROGBITS, ELF::SHF_ALLOC);
Evan Cheng76792992011-07-20 05:58:47 +0000[diff] [blame]471
472 TLSDataSection =
Rafael Espindolaba31e272015-01-29 17:33:21 +0000[diff] [blame]473 Ctx->getELFSection(".tdata", ELF::SHT_PROGBITS,
474 ELF::SHF_ALLOC | ELF::SHF_TLS | ELF::SHF_WRITE);
Evan Cheng76792992011-07-20 05:58:47 +0000[diff] [blame]475
Rafael Espindolaba31e272015-01-29 17:33:21 +0000[diff] [blame]476 TLSBSSSection = Ctx->getELFSection(
477 ".tbss", ELF::SHT_NOBITS, ELF::SHF_ALLOC | ELF::SHF_TLS | ELF::SHF_WRITE);
Evan Cheng76792992011-07-20 05:58:47 +0000[diff] [blame]478
Rafael Espindolaba31e272015-01-29 17:33:21 +0000[diff] [blame]479 DataRelROSection = Ctx->getELFSection(".data.rel.ro", ELF::SHT_PROGBITS,
480 ELF::SHF_ALLOC | ELF::SHF_WRITE);
Evan Cheng76792992011-07-20 05:58:47 +0000[diff] [blame]481
Evan Cheng76792992011-07-20 05:58:47 +0000[diff] [blame]482 MergeableConst4Section =
Rafael Espindolaba31e272015-01-29 17:33:21 +0000[diff] [blame]483 Ctx->getELFSection(".rodata.cst4", ELF::SHT_PROGBITS,
484 ELF::SHF_ALLOC | ELF::SHF_MERGE, 4, "");
Evan Cheng76792992011-07-20 05:58:47 +0000[diff] [blame]485
486 MergeableConst8Section =
Rafael Espindolaba31e272015-01-29 17:33:21 +0000[diff] [blame]487 Ctx->getELFSection(".rodata.cst8", ELF::SHT_PROGBITS,
488 ELF::SHF_ALLOC | ELF::SHF_MERGE, 8, "");
Evan Cheng76792992011-07-20 05:58:47 +0000[diff] [blame]489
490 MergeableConst16Section =
Rafael Espindolaba31e272015-01-29 17:33:21 +0000[diff] [blame]491 Ctx->getELFSection(".rodata.cst16", ELF::SHT_PROGBITS,
492 ELF::SHF_ALLOC | ELF::SHF_MERGE, 16, "");
Evan Cheng76792992011-07-20 05:58:47 +0000[diff] [blame]493
David Majnemer964b70d2016-02-22 22:23:11 +0000[diff] [blame]494 MergeableConst32Section =
495 Ctx->getELFSection(".rodata.cst32", ELF::SHT_PROGBITS,
496 ELF::SHF_ALLOC | ELF::SHF_MERGE, 32, "");
497
Evan Cheng76792992011-07-20 05:58:47 +0000[diff] [blame]498 // Exception Handling Sections.
499
500 // FIXME: We're emitting LSDA info into a readonly section on ELF, even though
501 // it contains relocatable pointers. In PIC mode, this is probably a big
502 // runtime hit for C++ apps. Either the contents of the LSDA need to be
503 // adjusted or this should be a data section.
Rafael Espindolaba31e272015-01-29 17:33:21 +0000[diff] [blame]504 LSDASection = Ctx->getELFSection(".gcc_except_table", ELF::SHT_PROGBITS,
505 ELF::SHF_ALLOC);
Evan Cheng76792992011-07-20 05:58:47 +0000[diff] [blame]506
Craig Topperbb694de2014-04-13 04:57:38 +0000[diff] [blame]507 COFFDebugSymbolsSection = nullptr;
Reid Klecknerf3b9ba42016-01-29 18:16:43 +0000[diff] [blame]508 COFFDebugTypesSection = nullptr;
Timur Iskhodzhanovf166f6c2014-01-30 01:39:17 +0000[diff] [blame]509
Evan Cheng76792992011-07-20 05:58:47 +0000[diff] [blame]510 // Debug Info Sections.
Rafael Espindola13a79bb2017-02-02 21:26:06 +0000[diff] [blame]511 DwarfAbbrevSection =
512 Ctx->getELFSection(".debug_abbrev", ELF::SHT_PROGBITS, 0);
513 DwarfInfoSection = Ctx->getELFSection(".debug_info", ELF::SHT_PROGBITS, 0);
Rafael Espindola23562fc2015-03-11 04:20:31 +0000[diff] [blame]514 DwarfLineSection = Ctx->getELFSection(".debug_line", ELF::SHT_PROGBITS, 0);
Rafael Espindolaba31e272015-01-29 17:33:21 +0000[diff] [blame]515 DwarfFrameSection = Ctx->getELFSection(".debug_frame", ELF::SHT_PROGBITS, 0);
Krzysztof Parzyszek228daa62013-02-12 18:00:14 +0000[diff] [blame]516 DwarfPubNamesSection =
Rafael Espindolaba31e272015-01-29 17:33:21 +0000[diff] [blame]517 Ctx->getELFSection(".debug_pubnames", ELF::SHT_PROGBITS, 0);
Evan Cheng76792992011-07-20 05:58:47 +0000[diff] [blame]518 DwarfPubTypesSection =
Rafael Espindolaba31e272015-01-29 17:33:21 +0000[diff] [blame]519 Ctx->getELFSection(".debug_pubtypes", ELF::SHT_PROGBITS, 0);
Eric Christopherb0e76942013-09-09 20:03:14 +0000[diff] [blame]520 DwarfGnuPubNamesSection =
Rafael Espindolaba31e272015-01-29 17:33:21 +0000[diff] [blame]521 Ctx->getELFSection(".debug_gnu_pubnames", ELF::SHT_PROGBITS, 0);
Eric Christopherb0e76942013-09-09 20:03:14 +0000[diff] [blame]522 DwarfGnuPubTypesSection =
Rafael Espindolaba31e272015-01-29 17:33:21 +0000[diff] [blame]523 Ctx->getELFSection(".debug_gnu_pubtypes", ELF::SHT_PROGBITS, 0);
Rafael Espindola23562fc2015-03-11 04:20:31 +0000[diff] [blame]524 DwarfStrSection =
525 Ctx->getELFSection(".debug_str", ELF::SHT_PROGBITS,
526 ELF::SHF_MERGE | ELF::SHF_STRINGS, 1, "");
527 DwarfLocSection = Ctx->getELFSection(".debug_loc", ELF::SHT_PROGBITS, 0);
Evan Cheng76792992011-07-20 05:58:47 +0000[diff] [blame]528 DwarfARangesSection =
Rafael Espindolaba31e272015-01-29 17:33:21 +0000[diff] [blame]529 Ctx->getELFSection(".debug_aranges", ELF::SHT_PROGBITS, 0);
Evan Cheng76792992011-07-20 05:58:47 +0000[diff] [blame]530 DwarfRangesSection =
Rafael Espindola13a79bb2017-02-02 21:26:06 +0000[diff] [blame]531 Ctx->getELFSection(".debug_ranges", ELF::SHT_PROGBITS, 0);
532 DwarfMacinfoSection =
533 Ctx->getELFSection(".debug_macinfo", ELF::SHT_PROGBITS, 0);
Eric Christopher27ed8ec2012-11-28 02:49:34 +0000[diff] [blame]534
535 // DWARF5 Experimental Debug Info
536
537 // Accelerator Tables
Eric Christophera0ad67d2012-10-08 21:41:30 +0000[diff] [blame]538 DwarfAccelNamesSection =
Rafael Espindola13a79bb2017-02-02 21:26:06 +0000[diff] [blame]539 Ctx->getELFSection(".apple_names", ELF::SHT_PROGBITS, 0);
Eric Christophera0ad67d2012-10-08 21:41:30 +0000[diff] [blame]540 DwarfAccelObjCSection =
Rafael Espindola13a79bb2017-02-02 21:26:06 +0000[diff] [blame]541 Ctx->getELFSection(".apple_objc", ELF::SHT_PROGBITS, 0);
542 DwarfAccelNamespaceSection =
543 Ctx->getELFSection(".apple_namespaces", ELF::SHT_PROGBITS, 0);
Eric Christophera0ad67d2012-10-08 21:41:30 +0000[diff] [blame]544 DwarfAccelTypesSection =
Rafael Espindola13a79bb2017-02-02 21:26:06 +0000[diff] [blame]545 Ctx->getELFSection(".apple_types", ELF::SHT_PROGBITS, 0);
Eric Christopherc3b434b2012-11-28 02:49:38 +0000[diff] [blame]546
547 // Fission Sections
Rafael Espindola23562fc2015-03-11 04:20:31 +0000[diff] [blame]548 DwarfInfoDWOSection =
549 Ctx->getELFSection(".debug_info.dwo", ELF::SHT_PROGBITS, 0);
550 DwarfTypesDWOSection =
551 Ctx->getELFSection(".debug_types.dwo", ELF::SHT_PROGBITS, 0);
552 DwarfAbbrevDWOSection =
553 Ctx->getELFSection(".debug_abbrev.dwo", ELF::SHT_PROGBITS, 0);
554 DwarfStrDWOSection =
555 Ctx->getELFSection(".debug_str.dwo", ELF::SHT_PROGBITS,
556 ELF::SHF_MERGE | ELF::SHF_STRINGS, 1, "");
Eric Christopher3c230092012-11-30 06:47:06 +0000[diff] [blame]557 DwarfLineDWOSection =
Rafael Espindolaba31e272015-01-29 17:33:21 +0000[diff] [blame]558 Ctx->getELFSection(".debug_line.dwo", ELF::SHT_PROGBITS, 0);
Eric Christopher3c230092012-11-30 06:47:06 +0000[diff] [blame]559 DwarfLocDWOSection =
Rafael Espindola13a79bb2017-02-02 21:26:06 +0000[diff] [blame]560 Ctx->getELFSection(".debug_loc.dwo", ELF::SHT_PROGBITS, 0);
Eric Christopherc0fa8672013-01-04 17:59:22 +0000[diff] [blame]561 DwarfStrOffDWOSection =
Rafael Espindolaba31e272015-01-29 17:33:21 +0000[diff] [blame]562 Ctx->getELFSection(".debug_str_offsets.dwo", ELF::SHT_PROGBITS, 0);
Rafael Espindola13a79bb2017-02-02 21:26:06 +0000[diff] [blame]563 DwarfAddrSection = Ctx->getELFSection(".debug_addr", ELF::SHT_PROGBITS, 0);
Philip Reames76846182014-08-01 18:47:09 +0000[diff] [blame]564
David Blaikieb073cb92015-12-02 06:21:34 +0000[diff] [blame]565 // DWP Sections
566 DwarfCUIndexSection =
567 Ctx->getELFSection(".debug_cu_index", ELF::SHT_PROGBITS, 0);
David Blaikie24c8ac92015-12-05 03:05:45 +0000[diff] [blame]568 DwarfTUIndexSection =
569 Ctx->getELFSection(".debug_tu_index", ELF::SHT_PROGBITS, 0);
David Blaikieb073cb92015-12-02 06:21:34 +0000[diff] [blame]570
Philip Reames76846182014-08-01 18:47:09 +0000[diff] [blame]571 StackMapSection =
Rafael Espindolaba31e272015-01-29 17:33:21 +0000[diff] [blame]572 Ctx->getELFSection(".llvm_stackmaps", ELF::SHT_PROGBITS, ELF::SHF_ALLOC);
Sanjoy Dasc63244d2015-06-15 18:44:08 +0000[diff] [blame]573
574 FaultMapSection =
575 Ctx->getELFSection(".llvm_faultmaps", ELF::SHT_PROGBITS, ELF::SHF_ALLOC);
Rafael Espindola889d7bb2015-11-06 15:30:45 +0000[diff] [blame]576
577 EHFrameSection =
578 Ctx->getELFSection(".eh_frame", EHSectionType, EHSectionFlags);
Evan Cheng76792992011-07-20 05:58:47 +0000[diff] [blame]579}
580
Benjamin Kramerc321e532016-06-08 19:09:22 +0000[diff] [blame]581void MCObjectFileInfo::initCOFFMCObjectFileInfo(const Triple &T) {
Rafael Espindola889d7bb2015-11-06 15:30:45 +0000[diff] [blame]582 EHFrameSection = Ctx->getCOFFSection(
583 ".eh_frame", COFF::IMAGE_SCN_CNT_INITIALIZED_DATA |
584 COFF::IMAGE_SCN_MEM_READ | COFF::IMAGE_SCN_MEM_WRITE,
Rafael Espindola449711c2015-11-18 06:02:15 +0000[diff] [blame]585 SectionKind::getData());
Rafael Espindola889d7bb2015-11-06 15:30:45 +0000[diff] [blame]586
Renato Golinef3eb062016-06-27 14:42:20 +0000[diff] [blame]587 // Set the `IMAGE_SCN_MEM_16BIT` flag when compiling for thumb mode. This is
588 // used to indicate to the linker that the text segment contains thumb instructions
589 // and to set the ISA selection bit for calls accordingly.
590 const bool IsThumb = T.getArch() == Triple::thumb;
Saleem Abdulrasool70a02062014-06-08 03:57:49 +0000[diff] [blame]591
David Majnemer48227a32014-09-21 09:18:07 +0000[diff] [blame]592 CommDirectiveSupportsAlignment = true;
David Majnemera9bdb322014-04-08 22:33:40 +0000[diff] [blame]593
Evan Cheng76792992011-07-20 05:58:47 +0000[diff] [blame]594 // COFF
Rafael Espindola6ed58a22015-03-10 21:16:18 +0000[diff] [blame]595 BSSSection = Ctx->getCOFFSection(
596 ".bss", COFF::IMAGE_SCN_CNT_UNINITIALIZED_DATA |
597 COFF::IMAGE_SCN_MEM_READ | COFF::IMAGE_SCN_MEM_WRITE,
598 SectionKind::getBSS());
599 TextSection = Ctx->getCOFFSection(
600 ".text",
Renato Golinef3eb062016-06-27 14:42:20 +0000[diff] [blame]601 (IsThumb ? COFF::IMAGE_SCN_MEM_16BIT : (COFF::SectionCharacteristics)0) |
Rafael Espindola6ed58a22015-03-10 21:16:18 +0000[diff] [blame]602 COFF::IMAGE_SCN_CNT_CODE | COFF::IMAGE_SCN_MEM_EXECUTE |
603 COFF::IMAGE_SCN_MEM_READ,
604 SectionKind::getText());
605 DataSection = Ctx->getCOFFSection(
606 ".data", COFF::IMAGE_SCN_CNT_INITIALIZED_DATA | COFF::IMAGE_SCN_MEM_READ |
607 COFF::IMAGE_SCN_MEM_WRITE,
Rafael Espindola449711c2015-11-18 06:02:15 +0000[diff] [blame]608 SectionKind::getData());
Rafael Espindola6ed58a22015-03-10 21:16:18 +0000[diff] [blame]609 ReadOnlySection = Ctx->getCOFFSection(
610 ".rdata", COFF::IMAGE_SCN_CNT_INITIALIZED_DATA | COFF::IMAGE_SCN_MEM_READ,
611 SectionKind::getReadOnly());
Saleem Abdulrasoola35f04a2014-06-08 00:34:23 +0000[diff] [blame]612
Evan Cheng76792992011-07-20 05:58:47 +0000[diff] [blame]613 // FIXME: We're emitting LSDA info into a readonly section on COFF, even
614 // though it contains relocatable pointers. In PIC mode, this is probably a
615 // big runtime hit for C++ apps. Either the contents of the LSDA need to be
616 // adjusted or this should be a data section.
NAKAMURA Takumi1db59952014-06-25 12:41:52 +0000[diff] [blame]617 if (T.getArch() == Triple::x86_64) {
618 // On Windows 64 with SEH, the LSDA is emitted into the .xdata section
Hans Wennborg083ca9b2015-10-06 23:24:35 +0000[diff] [blame]619 LSDASection = nullptr;
NAKAMURA Takumi1db59952014-06-25 12:41:52 +0000[diff] [blame]620 } else {
621 LSDASection = Ctx->getCOFFSection(".gcc_except_table",
622 COFF::IMAGE_SCN_CNT_INITIALIZED_DATA |
623 COFF::IMAGE_SCN_MEM_READ,
624 SectionKind::getReadOnly());
625 }
Evan Cheng76792992011-07-20 05:58:47 +0000[diff] [blame]626
627 // Debug info.
Timur Iskhodzhanov31377c52014-01-28 03:48:44 +0000[diff] [blame]628 COFFDebugSymbolsSection =
Reid Klecknerf3b9ba42016-01-29 18:16:43 +0000[diff] [blame]629 Ctx->getCOFFSection(".debug$S", (COFF::IMAGE_SCN_MEM_DISCARDABLE |
630 COFF::IMAGE_SCN_CNT_INITIALIZED_DATA |
631 COFF::IMAGE_SCN_MEM_READ),
632 SectionKind::getMetadata());
633 COFFDebugTypesSection =
634 Ctx->getCOFFSection(".debug$T", (COFF::IMAGE_SCN_MEM_DISCARDABLE |
635 COFF::IMAGE_SCN_CNT_INITIALIZED_DATA |
636 COFF::IMAGE_SCN_MEM_READ),
Rafael Espindola6ed58a22015-03-10 21:16:18 +0000[diff] [blame]637 SectionKind::getMetadata());
Timur Iskhodzhanov31377c52014-01-28 03:48:44 +0000[diff] [blame]638
Rafael Espindola6ed58a22015-03-10 21:16:18 +0000[diff] [blame]639 DwarfAbbrevSection = Ctx->getCOFFSection(
640 ".debug_abbrev",
641 COFF::IMAGE_SCN_MEM_DISCARDABLE | COFF::IMAGE_SCN_CNT_INITIALIZED_DATA |
642 COFF::IMAGE_SCN_MEM_READ,
Rafael Espindola6b9998b2015-03-10 22:00:25 +0000[diff] [blame]643 SectionKind::getMetadata(), "section_abbrev");
Rafael Espindola6ed58a22015-03-10 21:16:18 +0000[diff] [blame]644 DwarfInfoSection = Ctx->getCOFFSection(
645 ".debug_info",
646 COFF::IMAGE_SCN_MEM_DISCARDABLE | COFF::IMAGE_SCN_CNT_INITIALIZED_DATA |
647 COFF::IMAGE_SCN_MEM_READ,
Rafael Espindola6b9998b2015-03-10 22:00:25 +0000[diff] [blame]648 SectionKind::getMetadata(), "section_info");
Rafael Espindola6ed58a22015-03-10 21:16:18 +0000[diff] [blame]649 DwarfLineSection = Ctx->getCOFFSection(
650 ".debug_line",
651 COFF::IMAGE_SCN_MEM_DISCARDABLE | COFF::IMAGE_SCN_CNT_INITIALIZED_DATA |
652 COFF::IMAGE_SCN_MEM_READ,
Rafael Espindola6b9998b2015-03-10 22:00:25 +0000[diff] [blame]653 SectionKind::getMetadata(), "section_line");
654
Rafael Espindola6ed58a22015-03-10 21:16:18 +0000[diff] [blame]655 DwarfFrameSection = Ctx->getCOFFSection(
656 ".debug_frame",
657 COFF::IMAGE_SCN_MEM_DISCARDABLE | COFF::IMAGE_SCN_CNT_INITIALIZED_DATA |
658 COFF::IMAGE_SCN_MEM_READ,
659 SectionKind::getMetadata());
660 DwarfPubNamesSection = Ctx->getCOFFSection(
661 ".debug_pubnames",
662 COFF::IMAGE_SCN_MEM_DISCARDABLE | COFF::IMAGE_SCN_CNT_INITIALIZED_DATA |
663 COFF::IMAGE_SCN_MEM_READ,
664 SectionKind::getMetadata());
665 DwarfPubTypesSection = Ctx->getCOFFSection(
666 ".debug_pubtypes",
667 COFF::IMAGE_SCN_MEM_DISCARDABLE | COFF::IMAGE_SCN_CNT_INITIALIZED_DATA |
668 COFF::IMAGE_SCN_MEM_READ,
669 SectionKind::getMetadata());
670 DwarfGnuPubNamesSection = Ctx->getCOFFSection(
671 ".debug_gnu_pubnames",
672 COFF::IMAGE_SCN_MEM_DISCARDABLE | COFF::IMAGE_SCN_CNT_INITIALIZED_DATA |
673 COFF::IMAGE_SCN_MEM_READ,
674 SectionKind::getMetadata());
675 DwarfGnuPubTypesSection = Ctx->getCOFFSection(
676 ".debug_gnu_pubtypes",
677 COFF::IMAGE_SCN_MEM_DISCARDABLE | COFF::IMAGE_SCN_CNT_INITIALIZED_DATA |
678 COFF::IMAGE_SCN_MEM_READ,
679 SectionKind::getMetadata());
680 DwarfStrSection = Ctx->getCOFFSection(
681 ".debug_str",
682 COFF::IMAGE_SCN_MEM_DISCARDABLE | COFF::IMAGE_SCN_CNT_INITIALIZED_DATA |
683 COFF::IMAGE_SCN_MEM_READ,
Rafael Espindola6b9998b2015-03-10 22:00:25 +0000[diff] [blame]684 SectionKind::getMetadata(), "info_string");
Rafael Espindola6ed58a22015-03-10 21:16:18 +0000[diff] [blame]685 DwarfLocSection = Ctx->getCOFFSection(
686 ".debug_loc",
687 COFF::IMAGE_SCN_MEM_DISCARDABLE | COFF::IMAGE_SCN_CNT_INITIALIZED_DATA |
688 COFF::IMAGE_SCN_MEM_READ,
Rafael Espindola6b9998b2015-03-10 22:00:25 +0000[diff] [blame]689 SectionKind::getMetadata(), "section_debug_loc");
Rafael Espindola6ed58a22015-03-10 21:16:18 +0000[diff] [blame]690 DwarfARangesSection = Ctx->getCOFFSection(
691 ".debug_aranges",
692 COFF::IMAGE_SCN_MEM_DISCARDABLE | COFF::IMAGE_SCN_CNT_INITIALIZED_DATA |
693 COFF::IMAGE_SCN_MEM_READ,
694 SectionKind::getMetadata());
695 DwarfRangesSection = Ctx->getCOFFSection(
696 ".debug_ranges",
697 COFF::IMAGE_SCN_MEM_DISCARDABLE | COFF::IMAGE_SCN_CNT_INITIALIZED_DATA |
698 COFF::IMAGE_SCN_MEM_READ,
Rafael Espindola6b9998b2015-03-10 22:00:25 +0000[diff] [blame]699 SectionKind::getMetadata(), "debug_range");
Amjad Aboudd7cfb482016-01-07 14:28:20 +0000[diff] [blame]700 DwarfMacinfoSection = Ctx->getCOFFSection(
701 ".debug_macinfo",
702 COFF::IMAGE_SCN_MEM_DISCARDABLE | COFF::IMAGE_SCN_CNT_INITIALIZED_DATA |
703 COFF::IMAGE_SCN_MEM_READ,
Amjad Aboud8bbce8a2016-02-01 14:09:41 +0000[diff] [blame]704 SectionKind::getMetadata(), "debug_macinfo");
Rafael Espindola6ed58a22015-03-10 21:16:18 +0000[diff] [blame]705 DwarfInfoDWOSection = Ctx->getCOFFSection(
706 ".debug_info.dwo",
707 COFF::IMAGE_SCN_MEM_DISCARDABLE | COFF::IMAGE_SCN_CNT_INITIALIZED_DATA |
708 COFF::IMAGE_SCN_MEM_READ,
Rafael Espindola6b9998b2015-03-10 22:00:25 +0000[diff] [blame]709 SectionKind::getMetadata(), "section_info_dwo");
Rafael Espindola6ed58a22015-03-10 21:16:18 +0000[diff] [blame]710 DwarfTypesDWOSection = Ctx->getCOFFSection(
711 ".debug_types.dwo",
712 COFF::IMAGE_SCN_MEM_DISCARDABLE | COFF::IMAGE_SCN_CNT_INITIALIZED_DATA |
713 COFF::IMAGE_SCN_MEM_READ,
Rafael Espindolab03bc792015-03-10 23:06:32 +0000[diff] [blame]714 SectionKind::getMetadata(), "section_types_dwo");
Rafael Espindola6ed58a22015-03-10 21:16:18 +0000[diff] [blame]715 DwarfAbbrevDWOSection = Ctx->getCOFFSection(
716 ".debug_abbrev.dwo",
717 COFF::IMAGE_SCN_MEM_DISCARDABLE | COFF::IMAGE_SCN_CNT_INITIALIZED_DATA |
718 COFF::IMAGE_SCN_MEM_READ,
Rafael Espindola6b9998b2015-03-10 22:00:25 +0000[diff] [blame]719 SectionKind::getMetadata(), "section_abbrev_dwo");
Rafael Espindola6ed58a22015-03-10 21:16:18 +0000[diff] [blame]720 DwarfStrDWOSection = Ctx->getCOFFSection(
721 ".debug_str.dwo",
722 COFF::IMAGE_SCN_MEM_DISCARDABLE | COFF::IMAGE_SCN_CNT_INITIALIZED_DATA |
723 COFF::IMAGE_SCN_MEM_READ,
Rafael Espindola6b9998b2015-03-10 22:00:25 +0000[diff] [blame]724 SectionKind::getMetadata(), "skel_string");
Rafael Espindola6ed58a22015-03-10 21:16:18 +0000[diff] [blame]725 DwarfLineDWOSection = Ctx->getCOFFSection(
726 ".debug_line.dwo",
727 COFF::IMAGE_SCN_MEM_DISCARDABLE | COFF::IMAGE_SCN_CNT_INITIALIZED_DATA |
728 COFF::IMAGE_SCN_MEM_READ,
729 SectionKind::getMetadata());
730 DwarfLocDWOSection = Ctx->getCOFFSection(
731 ".debug_loc.dwo",
732 COFF::IMAGE_SCN_MEM_DISCARDABLE | COFF::IMAGE_SCN_CNT_INITIALIZED_DATA |
733 COFF::IMAGE_SCN_MEM_READ,
Rafael Espindola6b9998b2015-03-10 22:00:25 +0000[diff] [blame]734 SectionKind::getMetadata(), "skel_loc");
Rafael Espindola6ed58a22015-03-10 21:16:18 +0000[diff] [blame]735 DwarfStrOffDWOSection = Ctx->getCOFFSection(
736 ".debug_str_offsets.dwo",
737 COFF::IMAGE_SCN_MEM_DISCARDABLE | COFF::IMAGE_SCN_CNT_INITIALIZED_DATA |
738 COFF::IMAGE_SCN_MEM_READ,
739 SectionKind::getMetadata());
740 DwarfAddrSection = Ctx->getCOFFSection(
741 ".debug_addr",
742 COFF::IMAGE_SCN_MEM_DISCARDABLE | COFF::IMAGE_SCN_CNT_INITIALIZED_DATA |
743 COFF::IMAGE_SCN_MEM_READ,
Rafael Espindola6b9998b2015-03-10 22:00:25 +0000[diff] [blame]744 SectionKind::getMetadata(), "addr_sec");
David Blaikieb073cb92015-12-02 06:21:34 +0000[diff] [blame]745 DwarfCUIndexSection = Ctx->getCOFFSection(
746 ".debug_cu_index",
747 COFF::IMAGE_SCN_MEM_DISCARDABLE | COFF::IMAGE_SCN_CNT_INITIALIZED_DATA |
748 COFF::IMAGE_SCN_MEM_READ,
749 SectionKind::getMetadata());
David Blaikie24c8ac92015-12-05 03:05:45 +0000[diff] [blame]750 DwarfTUIndexSection = Ctx->getCOFFSection(
751 ".debug_tu_index",
752 COFF::IMAGE_SCN_MEM_DISCARDABLE | COFF::IMAGE_SCN_CNT_INITIALIZED_DATA |
753 COFF::IMAGE_SCN_MEM_READ,
754 SectionKind::getMetadata());
Rafael Espindola6ed58a22015-03-10 21:16:18 +0000[diff] [blame]755 DwarfAccelNamesSection = Ctx->getCOFFSection(
756 ".apple_names",
757 COFF::IMAGE_SCN_MEM_DISCARDABLE | COFF::IMAGE_SCN_CNT_INITIALIZED_DATA |
758 COFF::IMAGE_SCN_MEM_READ,
Rafael Espindola6b9998b2015-03-10 22:00:25 +0000[diff] [blame]759 SectionKind::getMetadata(), "names_begin");
Rafael Espindola6ed58a22015-03-10 21:16:18 +0000[diff] [blame]760 DwarfAccelNamespaceSection = Ctx->getCOFFSection(
761 ".apple_namespaces",
762 COFF::IMAGE_SCN_MEM_DISCARDABLE | COFF::IMAGE_SCN_CNT_INITIALIZED_DATA |
763 COFF::IMAGE_SCN_MEM_READ,
Rafael Espindola6b9998b2015-03-10 22:00:25 +0000[diff] [blame]764 SectionKind::getMetadata(), "namespac_begin");
Rafael Espindola6ed58a22015-03-10 21:16:18 +0000[diff] [blame]765 DwarfAccelTypesSection = Ctx->getCOFFSection(
766 ".apple_types",
767 COFF::IMAGE_SCN_MEM_DISCARDABLE | COFF::IMAGE_SCN_CNT_INITIALIZED_DATA |
768 COFF::IMAGE_SCN_MEM_READ,
Rafael Espindola6b9998b2015-03-10 22:00:25 +0000[diff] [blame]769 SectionKind::getMetadata(), "types_begin");
Rafael Espindola6ed58a22015-03-10 21:16:18 +0000[diff] [blame]770 DwarfAccelObjCSection = Ctx->getCOFFSection(
771 ".apple_objc",
772 COFF::IMAGE_SCN_MEM_DISCARDABLE | COFF::IMAGE_SCN_CNT_INITIALIZED_DATA |
773 COFF::IMAGE_SCN_MEM_READ,
Rafael Espindola6b9998b2015-03-10 22:00:25 +0000[diff] [blame]774 SectionKind::getMetadata(), "objc_begin");
Frederic Riss3f1a0a72014-11-14 20:33:40 +0000[diff] [blame]775
Rafael Espindola6ed58a22015-03-10 21:16:18 +0000[diff] [blame]776 DrectveSection = Ctx->getCOFFSection(
777 ".drectve", COFF::IMAGE_SCN_LNK_INFO | COFF::IMAGE_SCN_LNK_REMOVE,
778 SectionKind::getMetadata());
Evan Cheng76792992011-07-20 05:58:47 +0000[diff] [blame]779
Rafael Espindola6ed58a22015-03-10 21:16:18 +0000[diff] [blame]780 PDataSection = Ctx->getCOFFSection(
781 ".pdata", COFF::IMAGE_SCN_CNT_INITIALIZED_DATA | COFF::IMAGE_SCN_MEM_READ,
Rafael Espindola449711c2015-11-18 06:02:15 +0000[diff] [blame]782 SectionKind::getData());
Evan Cheng76792992011-07-20 05:58:47 +0000[diff] [blame]783
Rafael Espindola6ed58a22015-03-10 21:16:18 +0000[diff] [blame]784 XDataSection = Ctx->getCOFFSection(
785 ".xdata", COFF::IMAGE_SCN_CNT_INITIALIZED_DATA | COFF::IMAGE_SCN_MEM_READ,
Rafael Espindola449711c2015-11-18 06:02:15 +0000[diff] [blame]786 SectionKind::getData());
Saleem Abdulrasoola35f04a2014-06-08 00:34:23 +0000[diff] [blame]787
David Majnemer4eecd302015-05-30 04:56:02 +0000[diff] [blame]788 SXDataSection = Ctx->getCOFFSection(".sxdata", COFF::IMAGE_SCN_LNK_INFO,
789 SectionKind::getMetadata());
790
Rafael Espindola6ed58a22015-03-10 21:16:18 +0000[diff] [blame]791 TLSDataSection = Ctx->getCOFFSection(
792 ".tls$", COFF::IMAGE_SCN_CNT_INITIALIZED_DATA | COFF::IMAGE_SCN_MEM_READ |
793 COFF::IMAGE_SCN_MEM_WRITE,
Rafael Espindola449711c2015-11-18 06:02:15 +0000[diff] [blame]794 SectionKind::getData());
NAKAMURA Takumi0a7d0ad2015-09-22 11:15:07 +0000[diff] [blame]795
Swaroop Sridhare9247ab2015-06-25 00:28:42 +0000[diff] [blame]796 StackMapSection = Ctx->getCOFFSection(".llvm_stackmaps",
797 COFF::IMAGE_SCN_CNT_INITIALIZED_DATA |
798 COFF::IMAGE_SCN_MEM_READ,
NAKAMURA Takumi0a7d0ad2015-09-22 11:15:07 +0000[diff] [blame]799 SectionKind::getReadOnly());
Evan Cheng76792992011-07-20 05:58:47 +0000[diff] [blame]800}
801
Dan Gohman18eafb62017-02-22 01:23:18 +0000[diff] [blame]802void MCObjectFileInfo::initWasmMCObjectFileInfo(const Triple &T) {
803 // TODO: Set the section types and flags.
Dan Gohmand934cb82017-02-24 23:18:00 +0000[diff] [blame^]804 TextSection = Ctx->getWasmSection(".text", 0, 0);
805 DataSection = Ctx->getWasmSection(".data", 0, 0);
Dan Gohman18eafb62017-02-22 01:23:18 +0000[diff] [blame]806
807 // TODO: Set the section types and flags.
808 DwarfLineSection = Ctx->getWasmSection(".debug_line", 0, 0);
809 DwarfStrSection = Ctx->getWasmSection(".debug_str", 0, 0);
810 DwarfLocSection = Ctx->getWasmSection(".debug_loc", 0, 0);
811 DwarfAbbrevSection = Ctx->getWasmSection(".debug_abbrev", 0, 0, "section_abbrev");
812 DwarfARangesSection = Ctx->getWasmSection(".debug_aranges", 0, 0);
813 DwarfRangesSection = Ctx->getWasmSection(".debug_ranges", 0, 0, "debug_range");
814 DwarfMacinfoSection = Ctx->getWasmSection(".debug_macinfo", 0, 0, "debug_macinfo");
815 DwarfAddrSection = Ctx->getWasmSection(".debug_addr", 0, 0);
816 DwarfCUIndexSection = Ctx->getWasmSection(".debug_cu_index", 0, 0);
817 DwarfTUIndexSection = Ctx->getWasmSection(".debug_tu_index", 0, 0);
818 DwarfInfoSection = Ctx->getWasmSection(".debug_info", 0, 0, "section_info");
819 DwarfFrameSection = Ctx->getWasmSection(".debug_frame", 0, 0);
820 DwarfPubNamesSection = Ctx->getWasmSection(".debug_pubnames", 0, 0);
821 DwarfPubTypesSection = Ctx->getWasmSection(".debug_pubtypes", 0, 0);
822
823 // TODO: Define more sections.
824}
825
Rafael Espindola699281c2016-05-18 11:58:50 +0000[diff] [blame]826void MCObjectFileInfo::InitMCObjectFileInfo(const Triple &TheTriple, bool PIC,
Evan Chengbbf3b0d2011-07-20 19:50:42 +0000[diff] [blame]827 CodeModel::Model cm,
Evan Cheng76792992011-07-20 05:58:47 +0000[diff] [blame]828 MCContext &ctx) {
Rafael Espindola699281c2016-05-18 11:58:50 +0000[diff] [blame]829 PositionIndependent = PIC;
Evan Chengbbf3b0d2011-07-20 19:50:42 +0000[diff] [blame]830 CMModel = cm;
Evan Cheng76792992011-07-20 05:58:47 +0000[diff] [blame]831 Ctx = &ctx;
832
833 // Common.
834 CommDirectiveSupportsAlignment = true;
835 SupportsWeakOmittedEHFrame = true;
Tim Northoverd1c6f512014-03-29 09:03:13 +0000[diff] [blame]836 SupportsCompactUnwindWithoutEHFrame = false;
Tim Northoverf8e47e42015-10-28 22:56:36 +0000[diff] [blame]837 OmitDwarfIfHaveCompactUnwind = false;
Evan Chengbbf3b0d2011-07-20 19:50:42 +0000[diff] [blame]838
Rafael Espindolaaa7851d2014-05-12 13:47:05 +0000[diff] [blame]839 PersonalityEncoding = LSDAEncoding = FDECFIEncoding = TTypeEncoding =
840 dwarf::DW_EH_PE_absptr;
Evan Chengbbf3b0d2011-07-20 19:50:42 +0000[diff] [blame]841
Bill Wendling2d1df6b2013-04-10 21:42:06 +0000[diff] [blame]842 CompactUnwindDwarfEHFrameOnly = 0;
843
Craig Topperbb694de2014-04-13 04:57:38 +0000[diff] [blame]844 EHFrameSection = nullptr; // Created on demand.
845 CompactUnwindSection = nullptr; // Used only by selected targets.
846 DwarfAccelNamesSection = nullptr; // Used only by selected targets.
847 DwarfAccelObjCSection = nullptr; // Used only by selected targets.
848 DwarfAccelNamespaceSection = nullptr; // Used only by selected targets.
849 DwarfAccelTypesSection = nullptr; // Used only by selected targets.
Evan Cheng76792992011-07-20 05:58:47 +0000[diff] [blame]850
Daniel Sanders8d8b13d2015-06-16 12:18:07 +0000[diff] [blame]851 TT = TheTriple;
Saleem Abdulrasoolbdbc0082014-06-22 22:25:01 +0000[diff] [blame]852
David Majnemerff1d0842015-12-22 01:39:04 +0000[diff] [blame]853 switch (TT.getObjectFormat()) {
854 case Triple::MachO:
Rafael Espindoladbaf0492015-08-14 15:48:41 +0000[diff] [blame]855 Env = IsMachO;
Jim Grosbachbb2591f2015-06-04 23:35:03 +0000[diff] [blame]856 initMachOMCObjectFileInfo(TT);
David Majnemerff1d0842015-12-22 01:39:04 +0000[diff] [blame]857 break;
858 case Triple::COFF:
859 if (!TT.isOSWindows())
860 report_fatal_error(
861 "Cannot initialize MC for non-Windows COFF object files.");
862
Rafael Espindoladbaf0492015-08-14 15:48:41 +0000[diff] [blame]863 Env = IsCOFF;
Jim Grosbachbb2591f2015-06-04 23:35:03 +0000[diff] [blame]864 initCOFFMCObjectFileInfo(TT);
David Majnemerff1d0842015-12-22 01:39:04 +0000[diff] [blame]865 break;
866 case Triple::ELF:
Rafael Espindoladbaf0492015-08-14 15:48:41 +0000[diff] [blame]867 Env = IsELF;
Jim Grosbachbb2591f2015-06-04 23:35:03 +0000[diff] [blame]868 initELFMCObjectFileInfo(TT);
David Majnemerff1d0842015-12-22 01:39:04 +0000[diff] [blame]869 break;
Dan Gohman1209c7a2017-01-17 20:34:09 +0000[diff] [blame]870 case Triple::Wasm:
Dan Gohman18eafb62017-02-22 01:23:18 +0000[diff] [blame]871 Env = IsWasm;
872 initWasmMCObjectFileInfo(TT);
Dan Gohman1209c7a2017-01-17 20:34:09 +0000[diff] [blame]873 break;
David Majnemerff1d0842015-12-22 01:39:04 +0000[diff] [blame]874 case Triple::UnknownObjectFormat:
875 report_fatal_error("Cannot initialize MC for unknown object file format.");
876 break;
Evan Cheng76792992011-07-20 05:58:47 +0000[diff] [blame]877 }
878}
879
Rafael Espindola0709a7b2015-05-21 19:20:38 +0000[diff] [blame]880MCSection *MCObjectFileInfo::getDwarfTypesSection(uint64_t Hash) const {
David Blaikiebc563272013-12-13 21:33:40 +0000[diff] [blame]881 return Ctx->getELFSection(".debug_types", ELF::SHT_PROGBITS, ELF::SHF_GROUP,
Rafael Espindolaba31e272015-01-29 17:33:21 +0000[diff] [blame]882 0, utostr(Hash));
David Blaikiebc563272013-12-13 21:33:40 +0000[diff] [blame]883}