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gerrit-public.fairphone.software / toolchain / llvm-project / 1711f2d8bd0fdd6938bdf07e6e2fd346368c76ca / . / llvm / lib / MC / MCObjectFileInfo.cpp
blob: 87c318ab1c175dc043d5da559c95ab79e1b256e2 [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"
Reid Kleckner1f13d472015-09-03 16:41:50 +0000[diff] [blame]19#include "llvm/Support/COFF.h"
Hans Wennborg083ca9b2015-10-06 23:24:35 +0000[diff] [blame]20
Evan Cheng76792992011-07-20 05:58:47 +0000[diff] [blame]21using namespace llvm;
22
Rafael Espindolabecdf632014-06-20 22:37:01 +0000[diff] [blame]23static bool useCompactUnwind(const Triple &T) {
24 // Only on darwin.
25 if (!T.isOSDarwin())
26 return false;
27
28 // aarch64 always has it.
Tim Northovere19bed72014-07-23 12:32:47 +0000[diff] [blame]29 if (T.getArch() == Triple::aarch64)
Rafael Espindolabecdf632014-06-20 22:37:01 +0000[diff] [blame]30 return true;
31
Tim Northoverf8e47e42015-10-28 22:56:36 +0000[diff] [blame]32 // armv7k always has it.
Tim Northover042a6c12016-01-27 19:32:29 +0000[diff] [blame]33 if (T.isWatchABI())
Tim Northoverf8e47e42015-10-28 22:56:36 +0000[diff] [blame]34 return true;
35
Rafael Espindolabecdf632014-06-20 22:37:01 +0000[diff] [blame]36 // Use it on newer version of OS X.
37 if (T.isMacOSX() && !T.isMacOSXVersionLT(10, 6))
38 return true;
39
Rafael Espindolac3510c72014-06-20 22:40:55 +0000[diff] [blame]40 // And the iOS simulator.
41 if (T.isiOS() &&
42 (T.getArch() == Triple::x86_64 || T.getArch() == Triple::x86))
43 return true;
44
Rafael Espindolabecdf632014-06-20 22:37:01 +0000[diff] [blame]45 return false;
46}
47
Jim Grosbachbb2591f2015-06-04 23:35:03 +0000[diff] [blame]48void MCObjectFileInfo::initMachOMCObjectFileInfo(Triple T) {
Evan Cheng76792992011-07-20 05:58:47 +0000[diff] [blame]49 // MachO
Evan Cheng76792992011-07-20 05:58:47 +0000[diff] [blame]50 SupportsWeakOmittedEHFrame = false;
51
Rafael Espindola889d7bb2015-11-06 15:30:45 +0000[diff] [blame]52 EHFrameSection = Ctx->getMachOSection(
53 "__TEXT", "__eh_frame",
54 MachO::S_COALESCED | MachO::S_ATTR_NO_TOC |
55 MachO::S_ATTR_STRIP_STATIC_SYMS | MachO::S_ATTR_LIVE_SUPPORT,
56 SectionKind::getReadOnly());
57
Tim Northovere19bed72014-07-23 12:32:47 +0000[diff] [blame]58 if (T.isOSDarwin() && T.getArch() == Triple::aarch64)
Tim Northover00ed9962014-03-29 10:18:08 +0000[diff] [blame]59 SupportsCompactUnwindWithoutEHFrame = true;
60
Tim Northover042a6c12016-01-27 19:32:29 +0000[diff] [blame]61 if (T.isWatchABI())
Tim Northoverf8e47e42015-10-28 22:56:36 +0000[diff] [blame]62 OmitDwarfIfHaveCompactUnwind = true;
63
Evan Chengbbf3b0d2011-07-20 19:50:42 +0000[diff] [blame]64 PersonalityEncoding = dwarf::DW_EH_PE_indirect | dwarf::DW_EH_PE_pcrel
65 | dwarf::DW_EH_PE_sdata4;
Rafael Espindolaaa7851d2014-05-12 13:47:05 +0000[diff] [blame]66 LSDAEncoding = FDECFIEncoding = dwarf::DW_EH_PE_pcrel;
Evan Chengbbf3b0d2011-07-20 19:50:42 +0000[diff] [blame]67 TTypeEncoding = dwarf::DW_EH_PE_indirect | dwarf::DW_EH_PE_pcrel |
68 dwarf::DW_EH_PE_sdata4;
69
Evan Cheng76792992011-07-20 05:58:47 +0000[diff] [blame]70 // .comm doesn't support alignment before Leopard.
71 if (T.isMacOSX() && T.isMacOSXVersionLT(10, 5))
72 CommDirectiveSupportsAlignment = false;
73
74 TextSection // .text
75 = Ctx->getMachOSection("__TEXT", "__text",
David Majnemer7b583052014-03-07 07:36:05 +0000[diff] [blame]76 MachO::S_ATTR_PURE_INSTRUCTIONS,
Evan Cheng76792992011-07-20 05:58:47 +0000[diff] [blame]77 SectionKind::getText());
78 DataSection // .data
Rafael Espindola449711c2015-11-18 06:02:15 +0000[diff] [blame]79 = Ctx->getMachOSection("__DATA", "__data", 0, SectionKind::getData());
Evan Cheng76792992011-07-20 05:58:47 +0000[diff] [blame]80
NAKAMURA Takumi68fa6f92013-09-21 02:34:45 +0000[diff] [blame]81 // BSSSection might not be expected initialized on msvc.
Craig Topperbb694de2014-04-13 04:57:38 +0000[diff] [blame]82 BSSSection = nullptr;
NAKAMURA Takumi68fa6f92013-09-21 02:34:45 +0000[diff] [blame]83
Evan Cheng76792992011-07-20 05:58:47 +0000[diff] [blame]84 TLSDataSection // .tdata
Rafael Espindola449711c2015-11-18 06:02:15 +0000[diff] [blame]85 = Ctx->getMachOSection("__DATA", "__thread_data",
86 MachO::S_THREAD_LOCAL_REGULAR,
87 SectionKind::getData());
Evan Cheng76792992011-07-20 05:58:47 +0000[diff] [blame]88 TLSBSSSection // .tbss
89 = Ctx->getMachOSection("__DATA", "__thread_bss",
David Majnemer7b583052014-03-07 07:36:05 +0000[diff] [blame]90 MachO::S_THREAD_LOCAL_ZEROFILL,
Evan Cheng76792992011-07-20 05:58:47 +0000[diff] [blame]91 SectionKind::getThreadBSS());
92
93 // TODO: Verify datarel below.
94 TLSTLVSection // .tlv
Rafael Espindola449711c2015-11-18 06:02:15 +0000[diff] [blame]95 = Ctx->getMachOSection("__DATA", "__thread_vars",
96 MachO::S_THREAD_LOCAL_VARIABLES,
97 SectionKind::getData());
Evan Cheng76792992011-07-20 05:58:47 +0000[diff] [blame]98
Rafael Espindola449711c2015-11-18 06:02:15 +0000[diff] [blame]99 TLSThreadInitSection = Ctx->getMachOSection(
100 "__DATA", "__thread_init", MachO::S_THREAD_LOCAL_INIT_FUNCTION_POINTERS,
101 SectionKind::getData());
Evan Cheng76792992011-07-20 05:58:47 +0000[diff] [blame]102
103 CStringSection // .cstring
104 = Ctx->getMachOSection("__TEXT", "__cstring",
David Majnemer7b583052014-03-07 07:36:05 +0000[diff] [blame]105 MachO::S_CSTRING_LITERALS,
Evan Cheng76792992011-07-20 05:58:47 +0000[diff] [blame]106 SectionKind::getMergeable1ByteCString());
107 UStringSection
108 = Ctx->getMachOSection("__TEXT","__ustring", 0,
109 SectionKind::getMergeable2ByteCString());
110 FourByteConstantSection // .literal4
111 = Ctx->getMachOSection("__TEXT", "__literal4",
David Majnemer7b583052014-03-07 07:36:05 +0000[diff] [blame]112 MachO::S_4BYTE_LITERALS,
Evan Cheng76792992011-07-20 05:58:47 +0000[diff] [blame]113 SectionKind::getMergeableConst4());
114 EightByteConstantSection // .literal8
115 = Ctx->getMachOSection("__TEXT", "__literal8",
David Majnemer7b583052014-03-07 07:36:05 +0000[diff] [blame]116 MachO::S_8BYTE_LITERALS,
Evan Cheng76792992011-07-20 05:58:47 +0000[diff] [blame]117 SectionKind::getMergeableConst8());
118
Rafael Espindola1f3de492014-02-13 23:16:11 +0000[diff] [blame]119 SixteenByteConstantSection // .literal16
120 = Ctx->getMachOSection("__TEXT", "__literal16",
David Majnemer7b583052014-03-07 07:36:05 +0000[diff] [blame]121 MachO::S_16BYTE_LITERALS,
Rafael Espindola1f3de492014-02-13 23:16:11 +0000[diff] [blame]122 SectionKind::getMergeableConst16());
Evan Cheng76792992011-07-20 05:58:47 +0000[diff] [blame]123
124 ReadOnlySection // .const
125 = Ctx->getMachOSection("__TEXT", "__const", 0,
126 SectionKind::getReadOnly());
127
Akira Hatanaka8ad73992015-10-15 05:28:38 +0000[diff] [blame]128 // If the target is not powerpc, map the coal sections to the non-coal
129 // sections.
130 //
131 // "__TEXT/__textcoal_nt" => section "__TEXT/__text"
132 // "__TEXT/__const_coal" => section "__TEXT/__const"
133 // "__DATA/__datacoal_nt" => section "__DATA/__data"
134 Triple::ArchType ArchTy = T.getArch();
135
136 if (ArchTy == Triple::ppc || ArchTy == Triple::ppc64) {
137 TextCoalSection
138 = Ctx->getMachOSection("__TEXT", "__textcoal_nt",
139 MachO::S_COALESCED |
140 MachO::S_ATTR_PURE_INSTRUCTIONS,
141 SectionKind::getText());
142 ConstTextCoalSection
143 = Ctx->getMachOSection("__TEXT", "__const_coal",
144 MachO::S_COALESCED,
145 SectionKind::getReadOnly());
Rafael Espindola449711c2015-11-18 06:02:15 +0000[diff] [blame]146 DataCoalSection = Ctx->getMachOSection(
147 "__DATA", "__datacoal_nt", MachO::S_COALESCED, SectionKind::getData());
Akira Hatanaka8ad73992015-10-15 05:28:38 +0000[diff] [blame]148 } else {
149 TextCoalSection = TextSection;
150 ConstTextCoalSection = ReadOnlySection;
151 DataCoalSection = DataSection;
152 }
153
Evan Cheng76792992011-07-20 05:58:47 +0000[diff] [blame]154 ConstDataSection // .const_data
155 = Ctx->getMachOSection("__DATA", "__const", 0,
156 SectionKind::getReadOnlyWithRel());
Evan Cheng76792992011-07-20 05:58:47 +0000[diff] [blame]157 DataCommonSection
158 = Ctx->getMachOSection("__DATA","__common",
David Majnemer7b583052014-03-07 07:36:05 +0000[diff] [blame]159 MachO::S_ZEROFILL,
Evan Cheng76792992011-07-20 05:58:47 +0000[diff] [blame]160 SectionKind::getBSS());
161 DataBSSSection
David Majnemer7b583052014-03-07 07:36:05 +0000[diff] [blame]162 = Ctx->getMachOSection("__DATA","__bss", MachO::S_ZEROFILL,
Evan Cheng76792992011-07-20 05:58:47 +0000[diff] [blame]163 SectionKind::getBSS());
164
165
166 LazySymbolPointerSection
167 = Ctx->getMachOSection("__DATA", "__la_symbol_ptr",
David Majnemer7b583052014-03-07 07:36:05 +0000[diff] [blame]168 MachO::S_LAZY_SYMBOL_POINTERS,
Evan Cheng76792992011-07-20 05:58:47 +0000[diff] [blame]169 SectionKind::getMetadata());
170 NonLazySymbolPointerSection
171 = Ctx->getMachOSection("__DATA", "__nl_symbol_ptr",
David Majnemer7b583052014-03-07 07:36:05 +0000[diff] [blame]172 MachO::S_NON_LAZY_SYMBOL_POINTERS,
Evan Cheng76792992011-07-20 05:58:47 +0000[diff] [blame]173 SectionKind::getMetadata());
174
Tim Northover5c3140f2016-04-25 21:12:04 +0000[diff] [blame]175 ThreadLocalPointerSection
176 = Ctx->getMachOSection("__DATA", "__thread_ptr",
177 MachO::S_THREAD_LOCAL_VARIABLE_POINTERS,
178 SectionKind::getMetadata());
179
Evan Cheng76792992011-07-20 05:58:47 +0000[diff] [blame]180 if (RelocM == Reloc::Static) {
Rafael Espindola449711c2015-11-18 06:02:15 +0000[diff] [blame]181 StaticCtorSection = Ctx->getMachOSection("__TEXT", "__constructor", 0,
182 SectionKind::getData());
183 StaticDtorSection = Ctx->getMachOSection("__TEXT", "__destructor", 0,
184 SectionKind::getData());
Evan Cheng76792992011-07-20 05:58:47 +0000[diff] [blame]185 } else {
Rafael Espindola449711c2015-11-18 06:02:15 +0000[diff] [blame]186 StaticCtorSection = Ctx->getMachOSection("__DATA", "__mod_init_func",
187 MachO::S_MOD_INIT_FUNC_POINTERS,
188 SectionKind::getData());
189 StaticDtorSection = Ctx->getMachOSection("__DATA", "__mod_term_func",
190 MachO::S_MOD_TERM_FUNC_POINTERS,
191 SectionKind::getData());
Evan Cheng76792992011-07-20 05:58:47 +0000[diff] [blame]192 }
193
194 // Exception Handling.
195 LSDASection = Ctx->getMachOSection("__TEXT", "__gcc_except_tab", 0,
196 SectionKind::getReadOnlyWithRel());
197
Craig Topperbb694de2014-04-13 04:57:38 +0000[diff] [blame]198 COFFDebugSymbolsSection = nullptr;
Reid Klecknerf3b9ba42016-01-29 18:16:43 +0000[diff] [blame]199 COFFDebugTypesSection = nullptr;
Timur Iskhodzhanovf166f6c2014-01-30 01:39:17 +0000[diff] [blame]200
Rafael Espindolabecdf632014-06-20 22:37:01 +0000[diff] [blame]201 if (useCompactUnwind(T)) {
Evan Cheng76792992011-07-20 05:58:47 +0000[diff] [blame]202 CompactUnwindSection =
Rafael Espindolabecdf632014-06-20 22:37:01 +0000[diff] [blame]203 Ctx->getMachOSection("__LD", "__compact_unwind", MachO::S_ATTR_DEBUG,
204 SectionKind::getReadOnly());
Evan Cheng76792992011-07-20 05:58:47 +0000[diff] [blame]205
Bill Wendling2d1df6b2013-04-10 21:42:06 +0000[diff] [blame]206 if (T.getArch() == Triple::x86_64 || T.getArch() == Triple::x86)
Tim Northoverf8e47e42015-10-28 22:56:36 +0000[diff] [blame]207 CompactUnwindDwarfEHFrameOnly = 0x04000000; // UNWIND_X86_64_MODE_DWARF
Tim Northovere19bed72014-07-23 12:32:47 +0000[diff] [blame]208 else if (T.getArch() == Triple::aarch64)
Tim Northoverf8e47e42015-10-28 22:56:36 +0000[diff] [blame]209 CompactUnwindDwarfEHFrameOnly = 0x03000000; // UNWIND_ARM64_MODE_DWARF
210 else if (T.getArch() == Triple::arm || T.getArch() == Triple::thumb)
211 CompactUnwindDwarfEHFrameOnly = 0x04000000; // UNWIND_ARM_MODE_DWARF
Bill Wendling2d1df6b2013-04-10 21:42:06 +0000[diff] [blame]212 }
213
Evan Cheng76792992011-07-20 05:58:47 +0000[diff] [blame]214 // Debug Information.
Eric Christopher4996c702011-11-07 09:24:32 +0000[diff] [blame]215 DwarfAccelNamesSection =
Rafael Espindola6ed58a22015-03-10 21:16:18 +0000[diff] [blame]216 Ctx->getMachOSection("__DWARF", "__apple_names", MachO::S_ATTR_DEBUG,
Rafael Espindola6b9998b2015-03-10 22:00:25 +0000[diff] [blame]217 SectionKind::getMetadata(), "names_begin");
Eric Christopher4996c702011-11-07 09:24:32 +0000[diff] [blame]218 DwarfAccelObjCSection =
Rafael Espindola6ed58a22015-03-10 21:16:18 +0000[diff] [blame]219 Ctx->getMachOSection("__DWARF", "__apple_objc", MachO::S_ATTR_DEBUG,
Rafael Espindola6b9998b2015-03-10 22:00:25 +0000[diff] [blame]220 SectionKind::getMetadata(), "objc_begin");
Eric Christopher4996c702011-11-07 09:24:32 +0000[diff] [blame]221 // 16 character section limit...
222 DwarfAccelNamespaceSection =
Rafael Espindola6ed58a22015-03-10 21:16:18 +0000[diff] [blame]223 Ctx->getMachOSection("__DWARF", "__apple_namespac", MachO::S_ATTR_DEBUG,
Rafael Espindola6b9998b2015-03-10 22:00:25 +0000[diff] [blame]224 SectionKind::getMetadata(), "namespac_begin");
Eric Christopher4996c702011-11-07 09:24:32 +0000[diff] [blame]225 DwarfAccelTypesSection =
Rafael Espindola6ed58a22015-03-10 21:16:18 +0000[diff] [blame]226 Ctx->getMachOSection("__DWARF", "__apple_types", MachO::S_ATTR_DEBUG,
Rafael Espindola6b9998b2015-03-10 22:00:25 +0000[diff] [blame]227 SectionKind::getMetadata(), "types_begin");
Jim Grosbachdc1e36e2012-05-11 01:41:30 +0000[diff] [blame]228
Evan Cheng76792992011-07-20 05:58:47 +0000[diff] [blame]229 DwarfAbbrevSection =
Rafael Espindola6ed58a22015-03-10 21:16:18 +0000[diff] [blame]230 Ctx->getMachOSection("__DWARF", "__debug_abbrev", MachO::S_ATTR_DEBUG,
Rafael Espindola6b9998b2015-03-10 22:00:25 +0000[diff] [blame]231 SectionKind::getMetadata(), "section_abbrev");
Evan Cheng76792992011-07-20 05:58:47 +0000[diff] [blame]232 DwarfInfoSection =
Rafael Espindola6ed58a22015-03-10 21:16:18 +0000[diff] [blame]233 Ctx->getMachOSection("__DWARF", "__debug_info", MachO::S_ATTR_DEBUG,
Rafael Espindola6b9998b2015-03-10 22:00:25 +0000[diff] [blame]234 SectionKind::getMetadata(), "section_info");
Evan Cheng76792992011-07-20 05:58:47 +0000[diff] [blame]235 DwarfLineSection =
Rafael Espindola6ed58a22015-03-10 21:16:18 +0000[diff] [blame]236 Ctx->getMachOSection("__DWARF", "__debug_line", MachO::S_ATTR_DEBUG,
Rafael Espindola6b9998b2015-03-10 22:00:25 +0000[diff] [blame]237 SectionKind::getMetadata(), "section_line");
Evan Cheng76792992011-07-20 05:58:47 +0000[diff] [blame]238 DwarfFrameSection =
Rafael Espindola6ed58a22015-03-10 21:16:18 +0000[diff] [blame]239 Ctx->getMachOSection("__DWARF", "__debug_frame", MachO::S_ATTR_DEBUG,
240 SectionKind::getMetadata());
Krzysztof Parzyszek228daa62013-02-12 18:00:14 +0000[diff] [blame]241 DwarfPubNamesSection =
Rafael Espindola6ed58a22015-03-10 21:16:18 +0000[diff] [blame]242 Ctx->getMachOSection("__DWARF", "__debug_pubnames", MachO::S_ATTR_DEBUG,
243 SectionKind::getMetadata());
Evan Cheng76792992011-07-20 05:58:47 +0000[diff] [blame]244 DwarfPubTypesSection =
Rafael Espindola6ed58a22015-03-10 21:16:18 +0000[diff] [blame]245 Ctx->getMachOSection("__DWARF", "__debug_pubtypes", MachO::S_ATTR_DEBUG,
246 SectionKind::getMetadata());
Eric Christopherb0e76942013-09-09 20:03:14 +0000[diff] [blame]247 DwarfGnuPubNamesSection =
Rafael Espindola6ed58a22015-03-10 21:16:18 +0000[diff] [blame]248 Ctx->getMachOSection("__DWARF", "__debug_gnu_pubn", MachO::S_ATTR_DEBUG,
249 SectionKind::getMetadata());
Eric Christopherb0e76942013-09-09 20:03:14 +0000[diff] [blame]250 DwarfGnuPubTypesSection =
Rafael Espindola6ed58a22015-03-10 21:16:18 +0000[diff] [blame]251 Ctx->getMachOSection("__DWARF", "__debug_gnu_pubt", MachO::S_ATTR_DEBUG,
252 SectionKind::getMetadata());
Evan Cheng76792992011-07-20 05:58:47 +0000[diff] [blame]253 DwarfStrSection =
Rafael Espindola6ed58a22015-03-10 21:16:18 +0000[diff] [blame]254 Ctx->getMachOSection("__DWARF", "__debug_str", MachO::S_ATTR_DEBUG,
Rafael Espindola6b9998b2015-03-10 22:00:25 +0000[diff] [blame]255 SectionKind::getMetadata(), "info_string");
Evan Cheng76792992011-07-20 05:58:47 +0000[diff] [blame]256 DwarfLocSection =
Rafael Espindola6ed58a22015-03-10 21:16:18 +0000[diff] [blame]257 Ctx->getMachOSection("__DWARF", "__debug_loc", MachO::S_ATTR_DEBUG,
Rafael Espindola6b9998b2015-03-10 22:00:25 +0000[diff] [blame]258 SectionKind::getMetadata(), "section_debug_loc");
Evan Cheng76792992011-07-20 05:58:47 +0000[diff] [blame]259 DwarfARangesSection =
Rafael Espindola6ed58a22015-03-10 21:16:18 +0000[diff] [blame]260 Ctx->getMachOSection("__DWARF", "__debug_aranges", MachO::S_ATTR_DEBUG,
261 SectionKind::getMetadata());
Evan Cheng76792992011-07-20 05:58:47 +0000[diff] [blame]262 DwarfRangesSection =
Rafael Espindola6ed58a22015-03-10 21:16:18 +0000[diff] [blame]263 Ctx->getMachOSection("__DWARF", "__debug_ranges", MachO::S_ATTR_DEBUG,
Rafael Espindola6b9998b2015-03-10 22:00:25 +0000[diff] [blame]264 SectionKind::getMetadata(), "debug_range");
Amjad Aboudd7cfb482016-01-07 14:28:20 +0000[diff] [blame]265 DwarfMacinfoSection =
266 Ctx->getMachOSection("__DWARF", "__debug_macinfo", MachO::S_ATTR_DEBUG,
Amjad Aboud8bbce8a2016-02-01 14:09:41 +0000[diff] [blame]267 SectionKind::getMetadata(), "debug_macinfo");
Evan Cheng76792992011-07-20 05:58:47 +0000[diff] [blame]268 DwarfDebugInlineSection =
Rafael Espindola6ed58a22015-03-10 21:16:18 +0000[diff] [blame]269 Ctx->getMachOSection("__DWARF", "__debug_inlined", MachO::S_ATTR_DEBUG,
270 SectionKind::getMetadata());
David Blaikieb073cb92015-12-02 06:21:34 +0000[diff] [blame]271 DwarfCUIndexSection =
272 Ctx->getMachOSection("__DWARF", "__debug_cu_index", MachO::S_ATTR_DEBUG,
273 SectionKind::getMetadata());
David Blaikie24c8ac92015-12-05 03:05:45 +0000[diff] [blame]274 DwarfTUIndexSection =
275 Ctx->getMachOSection("__DWARF", "__debug_tu_index", MachO::S_ATTR_DEBUG,
276 SectionKind::getMetadata());
Rafael Espindola6ed58a22015-03-10 21:16:18 +0000[diff] [blame]277 StackMapSection = Ctx->getMachOSection("__LLVM_STACKMAPS", "__llvm_stackmaps",
278 0, SectionKind::getMetadata());
Evan Cheng76792992011-07-20 05:58:47 +0000[diff] [blame]279
Sanjoy Dasc63244d2015-06-15 18:44:08 +0000[diff] [blame]280 FaultMapSection = Ctx->getMachOSection("__LLVM_FAULTMAPS", "__llvm_faultmaps",
281 0, SectionKind::getMetadata());
282
Evan Cheng76792992011-07-20 05:58:47 +0000[diff] [blame]283 TLSExtraDataSection = TLSTLVSection;
284}
285
Jim Grosbachbb2591f2015-06-04 23:35:03 +0000[diff] [blame]286void MCObjectFileInfo::initELFMCObjectFileInfo(Triple T) {
Joerg Sonnenberger7c442522014-04-30 23:23:14 +0000[diff] [blame]287 switch (T.getArch()) {
288 case Triple::mips:
289 case Triple::mipsel:
Rafael Espindolab9b7ae02013-04-03 03:13:19 +0000[diff] [blame]290 FDECFIEncoding = dwarf::DW_EH_PE_sdata4;
Joerg Sonnenberger7c442522014-04-30 23:23:14 +0000[diff] [blame]291 break;
292 case Triple::mips64:
293 case Triple::mips64el:
Rafael Espindolab9b7ae02013-04-03 03:13:19 +0000[diff] [blame]294 FDECFIEncoding = dwarf::DW_EH_PE_sdata8;
Joerg Sonnenberger7c442522014-04-30 23:23:14 +0000[diff] [blame]295 break;
Rafael Espindolad11591b2014-11-27 17:13:56 +0000[diff] [blame]296 case Triple::x86_64:
297 FDECFIEncoding = dwarf::DW_EH_PE_pcrel |
298 ((CMModel == CodeModel::Large) ? dwarf::DW_EH_PE_sdata8
299 : dwarf::DW_EH_PE_sdata4);
Rafael Espindolad11591b2014-11-27 17:13:56 +0000[diff] [blame]300 break;
Joerg Sonnenberger7c442522014-04-30 23:23:14 +0000[diff] [blame]301 default:
Rafael Espindolaef9d3492013-03-15 05:51:57 +0000[diff] [blame]302 FDECFIEncoding = dwarf::DW_EH_PE_pcrel | dwarf::DW_EH_PE_sdata4;
Joerg Sonnenberger7c442522014-04-30 23:23:14 +0000[diff] [blame]303 break;
304 }
Rafael Espindolaef9d3492013-03-15 05:51:57 +0000[diff] [blame]305
Joerg Sonnenberger7c442522014-04-30 23:23:14 +0000[diff] [blame]306 switch (T.getArch()) {
Joerg Sonnenbergercf86ce12014-05-07 07:49:34 +0000[diff] [blame]307 case Triple::arm:
308 case Triple::armeb:
309 case Triple::thumb:
310 case Triple::thumbeb:
Joerg Sonnenberger94cbb662014-05-13 17:58:13 +0000[diff] [blame]311 if (Ctx->getAsmInfo()->getExceptionHandlingType() == ExceptionHandling::ARM)
312 break;
313 // Fallthrough if not using EHABI
Joerg Sonnenberger6637d4e2014-07-24 19:25:16 +0000[diff] [blame]314 case Triple::ppc:
Joerg Sonnenberger7c442522014-04-30 23:23:14 +0000[diff] [blame]315 case Triple::x86:
Evan Chengbbf3b0d2011-07-20 19:50:42 +0000[diff] [blame]316 PersonalityEncoding = (RelocM == Reloc::PIC_)
Jim Grosbach0dde3492011-11-15 16:46:22 +0000[diff] [blame]317 ? dwarf::DW_EH_PE_indirect | dwarf::DW_EH_PE_pcrel | dwarf::DW_EH_PE_sdata4
318 : dwarf::DW_EH_PE_absptr;
Evan Chengbbf3b0d2011-07-20 19:50:42 +0000[diff] [blame]319 LSDAEncoding = (RelocM == Reloc::PIC_)
320 ? dwarf::DW_EH_PE_pcrel | dwarf::DW_EH_PE_sdata4
321 : dwarf::DW_EH_PE_absptr;
Evan Chengbbf3b0d2011-07-20 19:50:42 +0000[diff] [blame]322 TTypeEncoding = (RelocM == Reloc::PIC_)
Jim Grosbach0dde3492011-11-15 16:46:22 +0000[diff] [blame]323 ? dwarf::DW_EH_PE_indirect | dwarf::DW_EH_PE_pcrel | dwarf::DW_EH_PE_sdata4
324 : dwarf::DW_EH_PE_absptr;
Joerg Sonnenberger7c442522014-04-30 23:23:14 +0000[diff] [blame]325 break;
326 case Triple::x86_64:
Evan Chengbbf3b0d2011-07-20 19:50:42 +0000[diff] [blame]327 if (RelocM == Reloc::PIC_) {
328 PersonalityEncoding = dwarf::DW_EH_PE_indirect | dwarf::DW_EH_PE_pcrel |
329 ((CMModel == CodeModel::Small || CMModel == CodeModel::Medium)
330 ? dwarf::DW_EH_PE_sdata4 : dwarf::DW_EH_PE_sdata8);
331 LSDAEncoding = dwarf::DW_EH_PE_pcrel |
332 (CMModel == CodeModel::Small
333 ? dwarf::DW_EH_PE_sdata4 : dwarf::DW_EH_PE_sdata8);
Evan Chengbbf3b0d2011-07-20 19:50:42 +0000[diff] [blame]334 TTypeEncoding = dwarf::DW_EH_PE_indirect | dwarf::DW_EH_PE_pcrel |
335 ((CMModel == CodeModel::Small || CMModel == CodeModel::Medium)
336 ? dwarf::DW_EH_PE_sdata4 : dwarf::DW_EH_PE_sdata8);
337 } else {
338 PersonalityEncoding =
339 (CMModel == CodeModel::Small || CMModel == CodeModel::Medium)
340 ? dwarf::DW_EH_PE_udata4 : dwarf::DW_EH_PE_absptr;
341 LSDAEncoding = (CMModel == CodeModel::Small)
342 ? dwarf::DW_EH_PE_udata4 : dwarf::DW_EH_PE_absptr;
Evan Chengbbf3b0d2011-07-20 19:50:42 +0000[diff] [blame]343 TTypeEncoding = (CMModel == CodeModel::Small)
344 ? dwarf::DW_EH_PE_udata4 : dwarf::DW_EH_PE_absptr;
345 }
Krzysztof Parzyszek1711f2d2016-04-25 21:28:52 +0000[diff] [blame^]346 break;
Krzysztof Parzyszek3e282292016-04-25 21:05:19 +0000[diff] [blame]347 case Triple::hexagon:
348 PersonalityEncoding = dwarf::DW_EH_PE_absptr;
349 LSDAEncoding = dwarf::DW_EH_PE_absptr;
350 FDECFIEncoding = dwarf::DW_EH_PE_absptr;
351 TTypeEncoding = dwarf::DW_EH_PE_absptr;
352 if (RelocM == Reloc::PIC_){
353 PersonalityEncoding |= dwarf::DW_EH_PE_indirect | dwarf::DW_EH_PE_pcrel;
354 LSDAEncoding |= dwarf::DW_EH_PE_pcrel;
355 FDECFIEncoding |= dwarf::DW_EH_PE_pcrel;
356 TTypeEncoding |= dwarf::DW_EH_PE_indirect | dwarf::DW_EH_PE_pcrel;
357 }
Joerg Sonnenberger7c442522014-04-30 23:23:14 +0000[diff] [blame]358 break;
359 case Triple::aarch64:
360 case Triple::aarch64_be:
Tim Northovere0e3aef2013-01-31 12:12:40 +0000[diff] [blame]361 // The small model guarantees static code/data size < 4GB, but not where it
362 // will be in memory. Most of these could end up >2GB away so even a signed
363 // pc-relative 32-bit address is insufficient, theoretically.
364 if (RelocM == Reloc::PIC_) {
365 PersonalityEncoding = dwarf::DW_EH_PE_indirect | dwarf::DW_EH_PE_pcrel |
366 dwarf::DW_EH_PE_sdata8;
367 LSDAEncoding = dwarf::DW_EH_PE_pcrel | dwarf::DW_EH_PE_sdata8;
Tim Northovere0e3aef2013-01-31 12:12:40 +0000[diff] [blame]368 TTypeEncoding = dwarf::DW_EH_PE_indirect | dwarf::DW_EH_PE_pcrel |
369 dwarf::DW_EH_PE_sdata8;
370 } else {
371 PersonalityEncoding = dwarf::DW_EH_PE_absptr;
372 LSDAEncoding = dwarf::DW_EH_PE_absptr;
Tim Northovere0e3aef2013-01-31 12:12:40 +0000[diff] [blame]373 TTypeEncoding = dwarf::DW_EH_PE_absptr;
374 }
Joerg Sonnenberger7c442522014-04-30 23:23:14 +0000[diff] [blame]375 break;
Jacques Pienaarea9f25a2016-03-01 21:21:42 +0000[diff] [blame]376 case Triple::lanai:
377 LSDAEncoding = dwarf::DW_EH_PE_absptr;
378 PersonalityEncoding = dwarf::DW_EH_PE_absptr;
379 TTypeEncoding = dwarf::DW_EH_PE_absptr;
380 break;
Logan Chienc0029812014-05-30 16:48:56 +0000[diff] [blame]381 case Triple::mips:
382 case Triple::mipsel:
Petar Jovanovic35f05742014-11-05 22:42:31 +0000[diff] [blame]383 case Triple::mips64:
384 case Triple::mips64el:
Daniel Sandersc95f3f82015-06-02 20:32:50 +0000[diff] [blame]385 // MIPS uses indirect pointer to refer personality functions and types, so
386 // that the eh_frame section can be read-only. DW.ref.personality will be
387 // generated for relocation.
Logan Chienc0029812014-05-30 16:48:56 +0000[diff] [blame]388 PersonalityEncoding = dwarf::DW_EH_PE_indirect;
Daniel Sandersc95f3f82015-06-02 20:32:50 +0000[diff] [blame]389 // FIXME: The N64 ABI probably ought to use DW_EH_PE_sdata8 but we can't
390 // identify N64 from just a triple.
391 TTypeEncoding = dwarf::DW_EH_PE_indirect | dwarf::DW_EH_PE_pcrel |
392 dwarf::DW_EH_PE_sdata4;
393 // We don't support PC-relative LSDA references in GAS so we use the default
394 // DW_EH_PE_absptr for those.
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:
Jakob Stoklund Olesen83c67732014-01-28 02:52:26 +0000[diff] [blame]406 if (RelocM == Reloc::PIC_) {
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;
420 if (RelocM == Reloc::PIC_) {
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.
Ulrich Weigande7c6dfe2013-05-06 17:28:30 +0000[diff] [blame]433 if (RelocM == Reloc::PIC_) {
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
Rafael Espindolaba31e272015-01-29 17:33:21 +0000[diff] [blame]498 StaticCtorSection = Ctx->getELFSection(".ctors", ELF::SHT_PROGBITS,
499 ELF::SHF_ALLOC | ELF::SHF_WRITE);
Evan Cheng76792992011-07-20 05:58:47 +0000[diff] [blame]500
Rafael Espindolaba31e272015-01-29 17:33:21 +0000[diff] [blame]501 StaticDtorSection = Ctx->getELFSection(".dtors", ELF::SHT_PROGBITS,
502 ELF::SHF_ALLOC | ELF::SHF_WRITE);
Evan Cheng76792992011-07-20 05:58:47 +0000[diff] [blame]503
504 // Exception Handling Sections.
505
506 // FIXME: We're emitting LSDA info into a readonly section on ELF, even though
507 // it contains relocatable pointers. In PIC mode, this is probably a big
508 // runtime hit for C++ apps. Either the contents of the LSDA need to be
509 // adjusted or this should be a data section.
Rafael Espindolaba31e272015-01-29 17:33:21 +0000[diff] [blame]510 LSDASection = Ctx->getELFSection(".gcc_except_table", ELF::SHT_PROGBITS,
511 ELF::SHF_ALLOC);
Evan Cheng76792992011-07-20 05:58:47 +0000[diff] [blame]512
Craig Topperbb694de2014-04-13 04:57:38 +0000[diff] [blame]513 COFFDebugSymbolsSection = nullptr;
Reid Klecknerf3b9ba42016-01-29 18:16:43 +0000[diff] [blame]514 COFFDebugTypesSection = nullptr;
Timur Iskhodzhanovf166f6c2014-01-30 01:39:17 +0000[diff] [blame]515
Evan Cheng76792992011-07-20 05:58:47 +0000[diff] [blame]516 // Debug Info Sections.
Rafael Espindola6b9998b2015-03-10 22:00:25 +0000[diff] [blame]517 DwarfAbbrevSection = Ctx->getELFSection(".debug_abbrev", ELF::SHT_PROGBITS, 0,
518 "section_abbrev");
519 DwarfInfoSection =
520 Ctx->getELFSection(".debug_info", ELF::SHT_PROGBITS, 0, "section_info");
Rafael Espindola23562fc2015-03-11 04:20:31 +0000[diff] [blame]521 DwarfLineSection = Ctx->getELFSection(".debug_line", ELF::SHT_PROGBITS, 0);
Rafael Espindolaba31e272015-01-29 17:33:21 +0000[diff] [blame]522 DwarfFrameSection = Ctx->getELFSection(".debug_frame", ELF::SHT_PROGBITS, 0);
Krzysztof Parzyszek228daa62013-02-12 18:00:14 +0000[diff] [blame]523 DwarfPubNamesSection =
Rafael Espindolaba31e272015-01-29 17:33:21 +0000[diff] [blame]524 Ctx->getELFSection(".debug_pubnames", ELF::SHT_PROGBITS, 0);
Evan Cheng76792992011-07-20 05:58:47 +0000[diff] [blame]525 DwarfPubTypesSection =
Rafael Espindolaba31e272015-01-29 17:33:21 +0000[diff] [blame]526 Ctx->getELFSection(".debug_pubtypes", ELF::SHT_PROGBITS, 0);
Eric Christopherb0e76942013-09-09 20:03:14 +0000[diff] [blame]527 DwarfGnuPubNamesSection =
Rafael Espindolaba31e272015-01-29 17:33:21 +0000[diff] [blame]528 Ctx->getELFSection(".debug_gnu_pubnames", ELF::SHT_PROGBITS, 0);
Eric Christopherb0e76942013-09-09 20:03:14 +0000[diff] [blame]529 DwarfGnuPubTypesSection =
Rafael Espindolaba31e272015-01-29 17:33:21 +0000[diff] [blame]530 Ctx->getELFSection(".debug_gnu_pubtypes", ELF::SHT_PROGBITS, 0);
Rafael Espindola23562fc2015-03-11 04:20:31 +0000[diff] [blame]531 DwarfStrSection =
532 Ctx->getELFSection(".debug_str", ELF::SHT_PROGBITS,
533 ELF::SHF_MERGE | ELF::SHF_STRINGS, 1, "");
534 DwarfLocSection = Ctx->getELFSection(".debug_loc", ELF::SHT_PROGBITS, 0);
Evan Cheng76792992011-07-20 05:58:47 +0000[diff] [blame]535 DwarfARangesSection =
Rafael Espindolaba31e272015-01-29 17:33:21 +0000[diff] [blame]536 Ctx->getELFSection(".debug_aranges", ELF::SHT_PROGBITS, 0);
Evan Cheng76792992011-07-20 05:58:47 +0000[diff] [blame]537 DwarfRangesSection =
Rafael Espindola6b9998b2015-03-10 22:00:25 +0000[diff] [blame]538 Ctx->getELFSection(".debug_ranges", ELF::SHT_PROGBITS, 0, "debug_range");
Amjad Aboud8bbce8a2016-02-01 14:09:41 +0000[diff] [blame]539 DwarfMacinfoSection = Ctx->getELFSection(".debug_macinfo", ELF::SHT_PROGBITS,
540 0, "debug_macinfo");
Eric Christopher27ed8ec2012-11-28 02:49:34 +0000[diff] [blame]541
542 // DWARF5 Experimental Debug Info
543
544 // Accelerator Tables
Eric Christophera0ad67d2012-10-08 21:41:30 +0000[diff] [blame]545 DwarfAccelNamesSection =
Rafael Espindola6b9998b2015-03-10 22:00:25 +0000[diff] [blame]546 Ctx->getELFSection(".apple_names", ELF::SHT_PROGBITS, 0, "names_begin");
Eric Christophera0ad67d2012-10-08 21:41:30 +0000[diff] [blame]547 DwarfAccelObjCSection =
Rafael Espindola6b9998b2015-03-10 22:00:25 +0000[diff] [blame]548 Ctx->getELFSection(".apple_objc", ELF::SHT_PROGBITS, 0, "objc_begin");
549 DwarfAccelNamespaceSection = Ctx->getELFSection(
550 ".apple_namespaces", ELF::SHT_PROGBITS, 0, "namespac_begin");
Eric Christophera0ad67d2012-10-08 21:41:30 +0000[diff] [blame]551 DwarfAccelTypesSection =
Rafael Espindola6b9998b2015-03-10 22:00:25 +0000[diff] [blame]552 Ctx->getELFSection(".apple_types", ELF::SHT_PROGBITS, 0, "types_begin");
Eric Christopherc3b434b2012-11-28 02:49:38 +0000[diff] [blame]553
554 // Fission Sections
Rafael Espindola23562fc2015-03-11 04:20:31 +0000[diff] [blame]555 DwarfInfoDWOSection =
556 Ctx->getELFSection(".debug_info.dwo", ELF::SHT_PROGBITS, 0);
557 DwarfTypesDWOSection =
558 Ctx->getELFSection(".debug_types.dwo", ELF::SHT_PROGBITS, 0);
559 DwarfAbbrevDWOSection =
560 Ctx->getELFSection(".debug_abbrev.dwo", ELF::SHT_PROGBITS, 0);
561 DwarfStrDWOSection =
562 Ctx->getELFSection(".debug_str.dwo", ELF::SHT_PROGBITS,
563 ELF::SHF_MERGE | ELF::SHF_STRINGS, 1, "");
Eric Christopher3c230092012-11-30 06:47:06 +0000[diff] [blame]564 DwarfLineDWOSection =
Rafael Espindolaba31e272015-01-29 17:33:21 +0000[diff] [blame]565 Ctx->getELFSection(".debug_line.dwo", ELF::SHT_PROGBITS, 0);
Eric Christopher3c230092012-11-30 06:47:06 +0000[diff] [blame]566 DwarfLocDWOSection =
Rafael Espindola6b9998b2015-03-10 22:00:25 +0000[diff] [blame]567 Ctx->getELFSection(".debug_loc.dwo", ELF::SHT_PROGBITS, 0, "skel_loc");
Eric Christopherc0fa8672013-01-04 17:59:22 +0000[diff] [blame]568 DwarfStrOffDWOSection =
Rafael Espindolaba31e272015-01-29 17:33:21 +0000[diff] [blame]569 Ctx->getELFSection(".debug_str_offsets.dwo", ELF::SHT_PROGBITS, 0);
Rafael Espindola6b9998b2015-03-10 22:00:25 +0000[diff] [blame]570 DwarfAddrSection =
571 Ctx->getELFSection(".debug_addr", ELF::SHT_PROGBITS, 0, "addr_sec");
Philip Reames76846182014-08-01 18:47:09 +0000[diff] [blame]572
David Blaikieb073cb92015-12-02 06:21:34 +0000[diff] [blame]573 // DWP Sections
574 DwarfCUIndexSection =
575 Ctx->getELFSection(".debug_cu_index", ELF::SHT_PROGBITS, 0);
David Blaikie24c8ac92015-12-05 03:05:45 +0000[diff] [blame]576 DwarfTUIndexSection =
577 Ctx->getELFSection(".debug_tu_index", ELF::SHT_PROGBITS, 0);
David Blaikieb073cb92015-12-02 06:21:34 +0000[diff] [blame]578
Philip Reames76846182014-08-01 18:47:09 +0000[diff] [blame]579 StackMapSection =
Rafael Espindolaba31e272015-01-29 17:33:21 +0000[diff] [blame]580 Ctx->getELFSection(".llvm_stackmaps", ELF::SHT_PROGBITS, ELF::SHF_ALLOC);
Sanjoy Dasc63244d2015-06-15 18:44:08 +0000[diff] [blame]581
582 FaultMapSection =
583 Ctx->getELFSection(".llvm_faultmaps", ELF::SHT_PROGBITS, ELF::SHF_ALLOC);
Rafael Espindola889d7bb2015-11-06 15:30:45 +0000[diff] [blame]584
585 EHFrameSection =
586 Ctx->getELFSection(".eh_frame", EHSectionType, EHSectionFlags);
Evan Cheng76792992011-07-20 05:58:47 +0000[diff] [blame]587}
588
Jim Grosbachbb2591f2015-06-04 23:35:03 +0000[diff] [blame]589void MCObjectFileInfo::initCOFFMCObjectFileInfo(Triple T) {
Rafael Espindola889d7bb2015-11-06 15:30:45 +0000[diff] [blame]590 EHFrameSection = Ctx->getCOFFSection(
591 ".eh_frame", COFF::IMAGE_SCN_CNT_INITIALIZED_DATA |
592 COFF::IMAGE_SCN_MEM_READ | COFF::IMAGE_SCN_MEM_WRITE,
Rafael Espindola449711c2015-11-18 06:02:15 +0000[diff] [blame]593 SectionKind::getData());
Rafael Espindola889d7bb2015-11-06 15:30:45 +0000[diff] [blame]594
Saleem Abdulrasool70a02062014-06-08 03:57:49 +0000[diff] [blame]595 bool IsWoA = T.getArch() == Triple::arm || T.getArch() == Triple::thumb;
596
David Majnemer48227a32014-09-21 09:18:07 +0000[diff] [blame]597 CommDirectiveSupportsAlignment = true;
David Majnemera9bdb322014-04-08 22:33:40 +0000[diff] [blame]598
Evan Cheng76792992011-07-20 05:58:47 +0000[diff] [blame]599 // COFF
Rafael Espindola6ed58a22015-03-10 21:16:18 +0000[diff] [blame]600 BSSSection = Ctx->getCOFFSection(
601 ".bss", COFF::IMAGE_SCN_CNT_UNINITIALIZED_DATA |
602 COFF::IMAGE_SCN_MEM_READ | COFF::IMAGE_SCN_MEM_WRITE,
603 SectionKind::getBSS());
604 TextSection = Ctx->getCOFFSection(
605 ".text",
606 (IsWoA ? COFF::IMAGE_SCN_MEM_16BIT : (COFF::SectionCharacteristics)0) |
607 COFF::IMAGE_SCN_CNT_CODE | COFF::IMAGE_SCN_MEM_EXECUTE |
608 COFF::IMAGE_SCN_MEM_READ,
609 SectionKind::getText());
610 DataSection = Ctx->getCOFFSection(
611 ".data", COFF::IMAGE_SCN_CNT_INITIALIZED_DATA | COFF::IMAGE_SCN_MEM_READ |
612 COFF::IMAGE_SCN_MEM_WRITE,
Rafael Espindola449711c2015-11-18 06:02:15 +0000[diff] [blame]613 SectionKind::getData());
Rafael Espindola6ed58a22015-03-10 21:16:18 +0000[diff] [blame]614 ReadOnlySection = Ctx->getCOFFSection(
615 ".rdata", COFF::IMAGE_SCN_CNT_INITIALIZED_DATA | COFF::IMAGE_SCN_MEM_READ,
616 SectionKind::getReadOnly());
Saleem Abdulrasoola35f04a2014-06-08 00:34:23 +0000[diff] [blame]617
Saleem Abdulrasooled7fc4b2014-06-08 00:34:27 +0000[diff] [blame]618 if (T.isKnownWindowsMSVCEnvironment() || T.isWindowsItaniumEnvironment()) {
Michael J. Spencerb560d072012-02-23 21:56:08 +0000[diff] [blame]619 StaticCtorSection =
Rafael Espindola6ed58a22015-03-10 21:16:18 +0000[diff] [blame]620 Ctx->getCOFFSection(".CRT$XCU", COFF::IMAGE_SCN_CNT_INITIALIZED_DATA |
621 COFF::IMAGE_SCN_MEM_READ,
622 SectionKind::getReadOnly());
Saleem Abdulrasoola35f04a2014-06-08 00:34:23 +0000[diff] [blame]623 StaticDtorSection =
Rafael Espindola6ed58a22015-03-10 21:16:18 +0000[diff] [blame]624 Ctx->getCOFFSection(".CRT$XTX", COFF::IMAGE_SCN_CNT_INITIALIZED_DATA |
625 COFF::IMAGE_SCN_MEM_READ,
626 SectionKind::getReadOnly());
Michael J. Spencerb560d072012-02-23 21:56:08 +0000[diff] [blame]627 } else {
Rafael Espindola6ed58a22015-03-10 21:16:18 +0000[diff] [blame]628 StaticCtorSection = Ctx->getCOFFSection(
629 ".ctors", COFF::IMAGE_SCN_CNT_INITIALIZED_DATA |
630 COFF::IMAGE_SCN_MEM_READ | COFF::IMAGE_SCN_MEM_WRITE,
Rafael Espindola449711c2015-11-18 06:02:15 +0000[diff] [blame]631 SectionKind::getData());
Rafael Espindola6ed58a22015-03-10 21:16:18 +0000[diff] [blame]632 StaticDtorSection = Ctx->getCOFFSection(
633 ".dtors", COFF::IMAGE_SCN_CNT_INITIALIZED_DATA |
634 COFF::IMAGE_SCN_MEM_READ | COFF::IMAGE_SCN_MEM_WRITE,
Rafael Espindola449711c2015-11-18 06:02:15 +0000[diff] [blame]635 SectionKind::getData());
Anton Korobeynikov37d73002012-09-23 15:53:47 +0000[diff] [blame]636 }
Evan Cheng76792992011-07-20 05:58:47 +0000[diff] [blame]637
638 // FIXME: We're emitting LSDA info into a readonly section on COFF, even
639 // though it contains relocatable pointers. In PIC mode, this is probably a
640 // big runtime hit for C++ apps. Either the contents of the LSDA need to be
641 // adjusted or this should be a data section.
NAKAMURA Takumi1db59952014-06-25 12:41:52 +0000[diff] [blame]642 if (T.getArch() == Triple::x86_64) {
643 // On Windows 64 with SEH, the LSDA is emitted into the .xdata section
Hans Wennborg083ca9b2015-10-06 23:24:35 +0000[diff] [blame]644 LSDASection = nullptr;
NAKAMURA Takumi1db59952014-06-25 12:41:52 +0000[diff] [blame]645 } else {
646 LSDASection = Ctx->getCOFFSection(".gcc_except_table",
647 COFF::IMAGE_SCN_CNT_INITIALIZED_DATA |
648 COFF::IMAGE_SCN_MEM_READ,
649 SectionKind::getReadOnly());
650 }
Evan Cheng76792992011-07-20 05:58:47 +0000[diff] [blame]651
652 // Debug info.
Timur Iskhodzhanov31377c52014-01-28 03:48:44 +0000[diff] [blame]653 COFFDebugSymbolsSection =
Reid Klecknerf3b9ba42016-01-29 18:16:43 +0000[diff] [blame]654 Ctx->getCOFFSection(".debug$S", (COFF::IMAGE_SCN_MEM_DISCARDABLE |
655 COFF::IMAGE_SCN_CNT_INITIALIZED_DATA |
656 COFF::IMAGE_SCN_MEM_READ),
657 SectionKind::getMetadata());
658 COFFDebugTypesSection =
659 Ctx->getCOFFSection(".debug$T", (COFF::IMAGE_SCN_MEM_DISCARDABLE |
660 COFF::IMAGE_SCN_CNT_INITIALIZED_DATA |
661 COFF::IMAGE_SCN_MEM_READ),
Rafael Espindola6ed58a22015-03-10 21:16:18 +0000[diff] [blame]662 SectionKind::getMetadata());
Timur Iskhodzhanov31377c52014-01-28 03:48:44 +0000[diff] [blame]663
Rafael Espindola6ed58a22015-03-10 21:16:18 +0000[diff] [blame]664 DwarfAbbrevSection = Ctx->getCOFFSection(
665 ".debug_abbrev",
666 COFF::IMAGE_SCN_MEM_DISCARDABLE | COFF::IMAGE_SCN_CNT_INITIALIZED_DATA |
667 COFF::IMAGE_SCN_MEM_READ,
Rafael Espindola6b9998b2015-03-10 22:00:25 +0000[diff] [blame]668 SectionKind::getMetadata(), "section_abbrev");
Rafael Espindola6ed58a22015-03-10 21:16:18 +0000[diff] [blame]669 DwarfInfoSection = Ctx->getCOFFSection(
670 ".debug_info",
671 COFF::IMAGE_SCN_MEM_DISCARDABLE | COFF::IMAGE_SCN_CNT_INITIALIZED_DATA |
672 COFF::IMAGE_SCN_MEM_READ,
Rafael Espindola6b9998b2015-03-10 22:00:25 +0000[diff] [blame]673 SectionKind::getMetadata(), "section_info");
Rafael Espindola6ed58a22015-03-10 21:16:18 +0000[diff] [blame]674 DwarfLineSection = Ctx->getCOFFSection(
675 ".debug_line",
676 COFF::IMAGE_SCN_MEM_DISCARDABLE | COFF::IMAGE_SCN_CNT_INITIALIZED_DATA |
677 COFF::IMAGE_SCN_MEM_READ,
Rafael Espindola6b9998b2015-03-10 22:00:25 +0000[diff] [blame]678 SectionKind::getMetadata(), "section_line");
679
Rafael Espindola6ed58a22015-03-10 21:16:18 +0000[diff] [blame]680 DwarfFrameSection = Ctx->getCOFFSection(
681 ".debug_frame",
682 COFF::IMAGE_SCN_MEM_DISCARDABLE | COFF::IMAGE_SCN_CNT_INITIALIZED_DATA |
683 COFF::IMAGE_SCN_MEM_READ,
684 SectionKind::getMetadata());
685 DwarfPubNamesSection = Ctx->getCOFFSection(
686 ".debug_pubnames",
687 COFF::IMAGE_SCN_MEM_DISCARDABLE | COFF::IMAGE_SCN_CNT_INITIALIZED_DATA |
688 COFF::IMAGE_SCN_MEM_READ,
689 SectionKind::getMetadata());
690 DwarfPubTypesSection = Ctx->getCOFFSection(
691 ".debug_pubtypes",
692 COFF::IMAGE_SCN_MEM_DISCARDABLE | COFF::IMAGE_SCN_CNT_INITIALIZED_DATA |
693 COFF::IMAGE_SCN_MEM_READ,
694 SectionKind::getMetadata());
695 DwarfGnuPubNamesSection = Ctx->getCOFFSection(
696 ".debug_gnu_pubnames",
697 COFF::IMAGE_SCN_MEM_DISCARDABLE | COFF::IMAGE_SCN_CNT_INITIALIZED_DATA |
698 COFF::IMAGE_SCN_MEM_READ,
699 SectionKind::getMetadata());
700 DwarfGnuPubTypesSection = Ctx->getCOFFSection(
701 ".debug_gnu_pubtypes",
702 COFF::IMAGE_SCN_MEM_DISCARDABLE | COFF::IMAGE_SCN_CNT_INITIALIZED_DATA |
703 COFF::IMAGE_SCN_MEM_READ,
704 SectionKind::getMetadata());
705 DwarfStrSection = Ctx->getCOFFSection(
706 ".debug_str",
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(), "info_string");
Rafael Espindola6ed58a22015-03-10 21:16:18 +0000[diff] [blame]710 DwarfLocSection = Ctx->getCOFFSection(
711 ".debug_loc",
712 COFF::IMAGE_SCN_MEM_DISCARDABLE | COFF::IMAGE_SCN_CNT_INITIALIZED_DATA |
713 COFF::IMAGE_SCN_MEM_READ,
Rafael Espindola6b9998b2015-03-10 22:00:25 +0000[diff] [blame]714 SectionKind::getMetadata(), "section_debug_loc");
Rafael Espindola6ed58a22015-03-10 21:16:18 +0000[diff] [blame]715 DwarfARangesSection = Ctx->getCOFFSection(
716 ".debug_aranges",
717 COFF::IMAGE_SCN_MEM_DISCARDABLE | COFF::IMAGE_SCN_CNT_INITIALIZED_DATA |
718 COFF::IMAGE_SCN_MEM_READ,
719 SectionKind::getMetadata());
720 DwarfRangesSection = Ctx->getCOFFSection(
721 ".debug_ranges",
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(), "debug_range");
Amjad Aboudd7cfb482016-01-07 14:28:20 +0000[diff] [blame]725 DwarfMacinfoSection = Ctx->getCOFFSection(
726 ".debug_macinfo",
727 COFF::IMAGE_SCN_MEM_DISCARDABLE | COFF::IMAGE_SCN_CNT_INITIALIZED_DATA |
728 COFF::IMAGE_SCN_MEM_READ,
Amjad Aboud8bbce8a2016-02-01 14:09:41 +0000[diff] [blame]729 SectionKind::getMetadata(), "debug_macinfo");
Rafael Espindola6ed58a22015-03-10 21:16:18 +0000[diff] [blame]730 DwarfInfoDWOSection = Ctx->getCOFFSection(
731 ".debug_info.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(), "section_info_dwo");
Rafael Espindola6ed58a22015-03-10 21:16:18 +0000[diff] [blame]735 DwarfTypesDWOSection = Ctx->getCOFFSection(
736 ".debug_types.dwo",
737 COFF::IMAGE_SCN_MEM_DISCARDABLE | COFF::IMAGE_SCN_CNT_INITIALIZED_DATA |
738 COFF::IMAGE_SCN_MEM_READ,
Rafael Espindolab03bc792015-03-10 23:06:32 +0000[diff] [blame]739 SectionKind::getMetadata(), "section_types_dwo");
Rafael Espindola6ed58a22015-03-10 21:16:18 +0000[diff] [blame]740 DwarfAbbrevDWOSection = Ctx->getCOFFSection(
741 ".debug_abbrev.dwo",
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(), "section_abbrev_dwo");
Rafael Espindola6ed58a22015-03-10 21:16:18 +0000[diff] [blame]745 DwarfStrDWOSection = Ctx->getCOFFSection(
746 ".debug_str.dwo",
747 COFF::IMAGE_SCN_MEM_DISCARDABLE | COFF::IMAGE_SCN_CNT_INITIALIZED_DATA |
748 COFF::IMAGE_SCN_MEM_READ,
Rafael Espindola6b9998b2015-03-10 22:00:25 +0000[diff] [blame]749 SectionKind::getMetadata(), "skel_string");
Rafael Espindola6ed58a22015-03-10 21:16:18 +0000[diff] [blame]750 DwarfLineDWOSection = Ctx->getCOFFSection(
751 ".debug_line.dwo",
752 COFF::IMAGE_SCN_MEM_DISCARDABLE | COFF::IMAGE_SCN_CNT_INITIALIZED_DATA |
753 COFF::IMAGE_SCN_MEM_READ,
754 SectionKind::getMetadata());
755 DwarfLocDWOSection = Ctx->getCOFFSection(
756 ".debug_loc.dwo",
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(), "skel_loc");
Rafael Espindola6ed58a22015-03-10 21:16:18 +0000[diff] [blame]760 DwarfStrOffDWOSection = Ctx->getCOFFSection(
761 ".debug_str_offsets.dwo",
762 COFF::IMAGE_SCN_MEM_DISCARDABLE | COFF::IMAGE_SCN_CNT_INITIALIZED_DATA |
763 COFF::IMAGE_SCN_MEM_READ,
764 SectionKind::getMetadata());
765 DwarfAddrSection = Ctx->getCOFFSection(
766 ".debug_addr",
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(), "addr_sec");
David Blaikieb073cb92015-12-02 06:21:34 +0000[diff] [blame]770 DwarfCUIndexSection = Ctx->getCOFFSection(
771 ".debug_cu_index",
772 COFF::IMAGE_SCN_MEM_DISCARDABLE | COFF::IMAGE_SCN_CNT_INITIALIZED_DATA |
773 COFF::IMAGE_SCN_MEM_READ,
774 SectionKind::getMetadata());
David Blaikie24c8ac92015-12-05 03:05:45 +0000[diff] [blame]775 DwarfTUIndexSection = Ctx->getCOFFSection(
776 ".debug_tu_index",
777 COFF::IMAGE_SCN_MEM_DISCARDABLE | COFF::IMAGE_SCN_CNT_INITIALIZED_DATA |
778 COFF::IMAGE_SCN_MEM_READ,
779 SectionKind::getMetadata());
Rafael Espindola6ed58a22015-03-10 21:16:18 +0000[diff] [blame]780 DwarfAccelNamesSection = Ctx->getCOFFSection(
781 ".apple_names",
782 COFF::IMAGE_SCN_MEM_DISCARDABLE | COFF::IMAGE_SCN_CNT_INITIALIZED_DATA |
783 COFF::IMAGE_SCN_MEM_READ,
Rafael Espindola6b9998b2015-03-10 22:00:25 +0000[diff] [blame]784 SectionKind::getMetadata(), "names_begin");
Rafael Espindola6ed58a22015-03-10 21:16:18 +0000[diff] [blame]785 DwarfAccelNamespaceSection = Ctx->getCOFFSection(
786 ".apple_namespaces",
787 COFF::IMAGE_SCN_MEM_DISCARDABLE | COFF::IMAGE_SCN_CNT_INITIALIZED_DATA |
788 COFF::IMAGE_SCN_MEM_READ,
Rafael Espindola6b9998b2015-03-10 22:00:25 +0000[diff] [blame]789 SectionKind::getMetadata(), "namespac_begin");
Rafael Espindola6ed58a22015-03-10 21:16:18 +0000[diff] [blame]790 DwarfAccelTypesSection = Ctx->getCOFFSection(
791 ".apple_types",
792 COFF::IMAGE_SCN_MEM_DISCARDABLE | COFF::IMAGE_SCN_CNT_INITIALIZED_DATA |
793 COFF::IMAGE_SCN_MEM_READ,
Rafael Espindola6b9998b2015-03-10 22:00:25 +0000[diff] [blame]794 SectionKind::getMetadata(), "types_begin");
Rafael Espindola6ed58a22015-03-10 21:16:18 +0000[diff] [blame]795 DwarfAccelObjCSection = Ctx->getCOFFSection(
796 ".apple_objc",
797 COFF::IMAGE_SCN_MEM_DISCARDABLE | COFF::IMAGE_SCN_CNT_INITIALIZED_DATA |
798 COFF::IMAGE_SCN_MEM_READ,
Rafael Espindola6b9998b2015-03-10 22:00:25 +0000[diff] [blame]799 SectionKind::getMetadata(), "objc_begin");
Frederic Riss3f1a0a72014-11-14 20:33:40 +0000[diff] [blame]800
Rafael Espindola6ed58a22015-03-10 21:16:18 +0000[diff] [blame]801 DrectveSection = Ctx->getCOFFSection(
802 ".drectve", COFF::IMAGE_SCN_LNK_INFO | COFF::IMAGE_SCN_LNK_REMOVE,
803 SectionKind::getMetadata());
Evan Cheng76792992011-07-20 05:58:47 +0000[diff] [blame]804
Rafael Espindola6ed58a22015-03-10 21:16:18 +0000[diff] [blame]805 PDataSection = Ctx->getCOFFSection(
806 ".pdata", COFF::IMAGE_SCN_CNT_INITIALIZED_DATA | COFF::IMAGE_SCN_MEM_READ,
Rafael Espindola449711c2015-11-18 06:02:15 +0000[diff] [blame]807 SectionKind::getData());
Evan Cheng76792992011-07-20 05:58:47 +0000[diff] [blame]808
Rafael Espindola6ed58a22015-03-10 21:16:18 +0000[diff] [blame]809 XDataSection = Ctx->getCOFFSection(
810 ".xdata", COFF::IMAGE_SCN_CNT_INITIALIZED_DATA | COFF::IMAGE_SCN_MEM_READ,
Rafael Espindola449711c2015-11-18 06:02:15 +0000[diff] [blame]811 SectionKind::getData());
Saleem Abdulrasoola35f04a2014-06-08 00:34:23 +0000[diff] [blame]812
David Majnemer4eecd302015-05-30 04:56:02 +0000[diff] [blame]813 SXDataSection = Ctx->getCOFFSection(".sxdata", COFF::IMAGE_SCN_LNK_INFO,
814 SectionKind::getMetadata());
815
Rafael Espindola6ed58a22015-03-10 21:16:18 +0000[diff] [blame]816 TLSDataSection = Ctx->getCOFFSection(
817 ".tls$", COFF::IMAGE_SCN_CNT_INITIALIZED_DATA | COFF::IMAGE_SCN_MEM_READ |
818 COFF::IMAGE_SCN_MEM_WRITE,
Rafael Espindola449711c2015-11-18 06:02:15 +0000[diff] [blame]819 SectionKind::getData());
NAKAMURA Takumi0a7d0ad2015-09-22 11:15:07 +0000[diff] [blame]820
Swaroop Sridhare9247ab2015-06-25 00:28:42 +0000[diff] [blame]821 StackMapSection = Ctx->getCOFFSection(".llvm_stackmaps",
822 COFF::IMAGE_SCN_CNT_INITIALIZED_DATA |
823 COFF::IMAGE_SCN_MEM_READ,
NAKAMURA Takumi0a7d0ad2015-09-22 11:15:07 +0000[diff] [blame]824 SectionKind::getReadOnly());
Evan Cheng76792992011-07-20 05:58:47 +0000[diff] [blame]825}
826
Daniel Sanders8d8b13d2015-06-16 12:18:07 +0000[diff] [blame]827void MCObjectFileInfo::InitMCObjectFileInfo(const Triple &TheTriple,
828 Reloc::Model relocm,
Evan Chengbbf3b0d2011-07-20 19:50:42 +0000[diff] [blame]829 CodeModel::Model cm,
Evan Cheng76792992011-07-20 05:58:47 +0000[diff] [blame]830 MCContext &ctx) {
831 RelocM = relocm;
Evan Chengbbf3b0d2011-07-20 19:50:42 +0000[diff] [blame]832 CMModel = cm;
Evan Cheng76792992011-07-20 05:58:47 +0000[diff] [blame]833 Ctx = &ctx;
834
835 // Common.
836 CommDirectiveSupportsAlignment = true;
837 SupportsWeakOmittedEHFrame = true;
Tim Northoverd1c6f512014-03-29 09:03:13 +0000[diff] [blame]838 SupportsCompactUnwindWithoutEHFrame = false;
Tim Northoverf8e47e42015-10-28 22:56:36 +0000[diff] [blame]839 OmitDwarfIfHaveCompactUnwind = false;
Evan Chengbbf3b0d2011-07-20 19:50:42 +0000[diff] [blame]840
Rafael Espindolaaa7851d2014-05-12 13:47:05 +0000[diff] [blame]841 PersonalityEncoding = LSDAEncoding = FDECFIEncoding = TTypeEncoding =
842 dwarf::DW_EH_PE_absptr;
Evan Chengbbf3b0d2011-07-20 19:50:42 +0000[diff] [blame]843
Bill Wendling2d1df6b2013-04-10 21:42:06 +0000[diff] [blame]844 CompactUnwindDwarfEHFrameOnly = 0;
845
Craig Topperbb694de2014-04-13 04:57:38 +0000[diff] [blame]846 EHFrameSection = nullptr; // Created on demand.
847 CompactUnwindSection = nullptr; // Used only by selected targets.
848 DwarfAccelNamesSection = nullptr; // Used only by selected targets.
849 DwarfAccelObjCSection = nullptr; // Used only by selected targets.
850 DwarfAccelNamespaceSection = nullptr; // Used only by selected targets.
851 DwarfAccelTypesSection = nullptr; // Used only by selected targets.
Evan Cheng76792992011-07-20 05:58:47 +0000[diff] [blame]852
Daniel Sanders8d8b13d2015-06-16 12:18:07 +0000[diff] [blame]853 TT = TheTriple;
Saleem Abdulrasoolbdbc0082014-06-22 22:25:01 +0000[diff] [blame]854
David Majnemerff1d0842015-12-22 01:39:04 +0000[diff] [blame]855 switch (TT.getObjectFormat()) {
856 case Triple::MachO:
Rafael Espindoladbaf0492015-08-14 15:48:41 +0000[diff] [blame]857 Env = IsMachO;
Jim Grosbachbb2591f2015-06-04 23:35:03 +0000[diff] [blame]858 initMachOMCObjectFileInfo(TT);
David Majnemerff1d0842015-12-22 01:39:04 +0000[diff] [blame]859 break;
860 case Triple::COFF:
861 if (!TT.isOSWindows())
862 report_fatal_error(
863 "Cannot initialize MC for non-Windows COFF object files.");
864
Rafael Espindoladbaf0492015-08-14 15:48:41 +0000[diff] [blame]865 Env = IsCOFF;
Jim Grosbachbb2591f2015-06-04 23:35:03 +0000[diff] [blame]866 initCOFFMCObjectFileInfo(TT);
David Majnemerff1d0842015-12-22 01:39:04 +0000[diff] [blame]867 break;
868 case Triple::ELF:
Rafael Espindoladbaf0492015-08-14 15:48:41 +0000[diff] [blame]869 Env = IsELF;
Jim Grosbachbb2591f2015-06-04 23:35:03 +0000[diff] [blame]870 initELFMCObjectFileInfo(TT);
David Majnemerff1d0842015-12-22 01:39:04 +0000[diff] [blame]871 break;
872 case Triple::UnknownObjectFormat:
873 report_fatal_error("Cannot initialize MC for unknown object file format.");
874 break;
Evan Cheng76792992011-07-20 05:58:47 +0000[diff] [blame]875 }
876}
877
Daniel Sanders8d8b13d2015-06-16 12:18:07 +0000[diff] [blame]878void MCObjectFileInfo::InitMCObjectFileInfo(StringRef TT, Reloc::Model RM,
879 CodeModel::Model CM,
880 MCContext &ctx) {
881 InitMCObjectFileInfo(Triple(TT), RM, CM, ctx);
882}
883
Rafael Espindola0709a7b2015-05-21 19:20:38 +0000[diff] [blame]884MCSection *MCObjectFileInfo::getDwarfTypesSection(uint64_t Hash) const {
David Blaikiebc563272013-12-13 21:33:40 +0000[diff] [blame]885 return Ctx->getELFSection(".debug_types", ELF::SHT_PROGBITS, ELF::SHF_GROUP,
Rafael Espindolaba31e272015-01-29 17:33:21 +0000[diff] [blame]886 0, utostr(Hash));
David Blaikiebc563272013-12-13 21:33:40 +0000[diff] [blame]887}