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gerrit-public.fairphone.software / toolchain / llvm-project / 157a5d5312bda0ed8da6a434ebcecfe6e646c63e / . / llvm / lib / MC / MCObjectFileInfo.cpp
blob: a3f9937f4104e96ef87d20e46ad5be5a98ddf74a [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
175 if (RelocM == Reloc::Static) {
Rafael Espindola449711c2015-11-18 06:02:15 +0000[diff] [blame]176 StaticCtorSection = Ctx->getMachOSection("__TEXT", "__constructor", 0,
177 SectionKind::getData());
178 StaticDtorSection = Ctx->getMachOSection("__TEXT", "__destructor", 0,
179 SectionKind::getData());
Evan Cheng76792992011-07-20 05:58:47 +0000[diff] [blame]180 } else {
Rafael Espindola449711c2015-11-18 06:02:15 +0000[diff] [blame]181 StaticCtorSection = Ctx->getMachOSection("__DATA", "__mod_init_func",
182 MachO::S_MOD_INIT_FUNC_POINTERS,
183 SectionKind::getData());
184 StaticDtorSection = Ctx->getMachOSection("__DATA", "__mod_term_func",
185 MachO::S_MOD_TERM_FUNC_POINTERS,
186 SectionKind::getData());
Evan Cheng76792992011-07-20 05:58:47 +0000[diff] [blame]187 }
188
189 // Exception Handling.
190 LSDASection = Ctx->getMachOSection("__TEXT", "__gcc_except_tab", 0,
191 SectionKind::getReadOnlyWithRel());
192
Craig Topperbb694de2014-04-13 04:57:38 +0000[diff] [blame]193 COFFDebugSymbolsSection = nullptr;
Reid Klecknerf3b9ba42016-01-29 18:16:43 +0000[diff] [blame]194 COFFDebugTypesSection = nullptr;
Timur Iskhodzhanovf166f6c2014-01-30 01:39:17 +0000[diff] [blame]195
Rafael Espindolabecdf632014-06-20 22:37:01 +0000[diff] [blame]196 if (useCompactUnwind(T)) {
Evan Cheng76792992011-07-20 05:58:47 +0000[diff] [blame]197 CompactUnwindSection =
Rafael Espindolabecdf632014-06-20 22:37:01 +0000[diff] [blame]198 Ctx->getMachOSection("__LD", "__compact_unwind", MachO::S_ATTR_DEBUG,
199 SectionKind::getReadOnly());
Evan Cheng76792992011-07-20 05:58:47 +0000[diff] [blame]200
Bill Wendling2d1df6b2013-04-10 21:42:06 +0000[diff] [blame]201 if (T.getArch() == Triple::x86_64 || T.getArch() == Triple::x86)
Tim Northoverf8e47e42015-10-28 22:56:36 +0000[diff] [blame]202 CompactUnwindDwarfEHFrameOnly = 0x04000000; // UNWIND_X86_64_MODE_DWARF
Tim Northovere19bed72014-07-23 12:32:47 +0000[diff] [blame]203 else if (T.getArch() == Triple::aarch64)
Tim Northoverf8e47e42015-10-28 22:56:36 +0000[diff] [blame]204 CompactUnwindDwarfEHFrameOnly = 0x03000000; // UNWIND_ARM64_MODE_DWARF
205 else if (T.getArch() == Triple::arm || T.getArch() == Triple::thumb)
206 CompactUnwindDwarfEHFrameOnly = 0x04000000; // UNWIND_ARM_MODE_DWARF
Bill Wendling2d1df6b2013-04-10 21:42:06 +0000[diff] [blame]207 }
208
Evan Cheng76792992011-07-20 05:58:47 +0000[diff] [blame]209 // Debug Information.
Eric Christopher4996c702011-11-07 09:24:32 +0000[diff] [blame]210 DwarfAccelNamesSection =
Rafael Espindola6ed58a22015-03-10 21:16:18 +0000[diff] [blame]211 Ctx->getMachOSection("__DWARF", "__apple_names", MachO::S_ATTR_DEBUG,
Rafael Espindola6b9998b2015-03-10 22:00:25 +0000[diff] [blame]212 SectionKind::getMetadata(), "names_begin");
Eric Christopher4996c702011-11-07 09:24:32 +0000[diff] [blame]213 DwarfAccelObjCSection =
Rafael Espindola6ed58a22015-03-10 21:16:18 +0000[diff] [blame]214 Ctx->getMachOSection("__DWARF", "__apple_objc", MachO::S_ATTR_DEBUG,
Rafael Espindola6b9998b2015-03-10 22:00:25 +0000[diff] [blame]215 SectionKind::getMetadata(), "objc_begin");
Eric Christopher4996c702011-11-07 09:24:32 +0000[diff] [blame]216 // 16 character section limit...
217 DwarfAccelNamespaceSection =
Rafael Espindola6ed58a22015-03-10 21:16:18 +0000[diff] [blame]218 Ctx->getMachOSection("__DWARF", "__apple_namespac", MachO::S_ATTR_DEBUG,
Rafael Espindola6b9998b2015-03-10 22:00:25 +0000[diff] [blame]219 SectionKind::getMetadata(), "namespac_begin");
Eric Christopher4996c702011-11-07 09:24:32 +0000[diff] [blame]220 DwarfAccelTypesSection =
Rafael Espindola6ed58a22015-03-10 21:16:18 +0000[diff] [blame]221 Ctx->getMachOSection("__DWARF", "__apple_types", MachO::S_ATTR_DEBUG,
Rafael Espindola6b9998b2015-03-10 22:00:25 +0000[diff] [blame]222 SectionKind::getMetadata(), "types_begin");
Jim Grosbachdc1e36e2012-05-11 01:41:30 +0000[diff] [blame]223
Evan Cheng76792992011-07-20 05:58:47 +0000[diff] [blame]224 DwarfAbbrevSection =
Rafael Espindola6ed58a22015-03-10 21:16:18 +0000[diff] [blame]225 Ctx->getMachOSection("__DWARF", "__debug_abbrev", MachO::S_ATTR_DEBUG,
Rafael Espindola6b9998b2015-03-10 22:00:25 +0000[diff] [blame]226 SectionKind::getMetadata(), "section_abbrev");
Evan Cheng76792992011-07-20 05:58:47 +0000[diff] [blame]227 DwarfInfoSection =
Rafael Espindola6ed58a22015-03-10 21:16:18 +0000[diff] [blame]228 Ctx->getMachOSection("__DWARF", "__debug_info", MachO::S_ATTR_DEBUG,
Rafael Espindola6b9998b2015-03-10 22:00:25 +0000[diff] [blame]229 SectionKind::getMetadata(), "section_info");
Evan Cheng76792992011-07-20 05:58:47 +0000[diff] [blame]230 DwarfLineSection =
Rafael Espindola6ed58a22015-03-10 21:16:18 +0000[diff] [blame]231 Ctx->getMachOSection("__DWARF", "__debug_line", MachO::S_ATTR_DEBUG,
Rafael Espindola6b9998b2015-03-10 22:00:25 +0000[diff] [blame]232 SectionKind::getMetadata(), "section_line");
Evan Cheng76792992011-07-20 05:58:47 +0000[diff] [blame]233 DwarfFrameSection =
Rafael Espindola6ed58a22015-03-10 21:16:18 +0000[diff] [blame]234 Ctx->getMachOSection("__DWARF", "__debug_frame", MachO::S_ATTR_DEBUG,
235 SectionKind::getMetadata());
Krzysztof Parzyszek228daa62013-02-12 18:00:14 +0000[diff] [blame]236 DwarfPubNamesSection =
Rafael Espindola6ed58a22015-03-10 21:16:18 +0000[diff] [blame]237 Ctx->getMachOSection("__DWARF", "__debug_pubnames", MachO::S_ATTR_DEBUG,
238 SectionKind::getMetadata());
Evan Cheng76792992011-07-20 05:58:47 +0000[diff] [blame]239 DwarfPubTypesSection =
Rafael Espindola6ed58a22015-03-10 21:16:18 +0000[diff] [blame]240 Ctx->getMachOSection("__DWARF", "__debug_pubtypes", MachO::S_ATTR_DEBUG,
241 SectionKind::getMetadata());
Eric Christopherb0e76942013-09-09 20:03:14 +0000[diff] [blame]242 DwarfGnuPubNamesSection =
Rafael Espindola6ed58a22015-03-10 21:16:18 +0000[diff] [blame]243 Ctx->getMachOSection("__DWARF", "__debug_gnu_pubn", MachO::S_ATTR_DEBUG,
244 SectionKind::getMetadata());
Eric Christopherb0e76942013-09-09 20:03:14 +0000[diff] [blame]245 DwarfGnuPubTypesSection =
Rafael Espindola6ed58a22015-03-10 21:16:18 +0000[diff] [blame]246 Ctx->getMachOSection("__DWARF", "__debug_gnu_pubt", MachO::S_ATTR_DEBUG,
247 SectionKind::getMetadata());
Evan Cheng76792992011-07-20 05:58:47 +0000[diff] [blame]248 DwarfStrSection =
Rafael Espindola6ed58a22015-03-10 21:16:18 +0000[diff] [blame]249 Ctx->getMachOSection("__DWARF", "__debug_str", MachO::S_ATTR_DEBUG,
Rafael Espindola6b9998b2015-03-10 22:00:25 +0000[diff] [blame]250 SectionKind::getMetadata(), "info_string");
Evan Cheng76792992011-07-20 05:58:47 +0000[diff] [blame]251 DwarfLocSection =
Rafael Espindola6ed58a22015-03-10 21:16:18 +0000[diff] [blame]252 Ctx->getMachOSection("__DWARF", "__debug_loc", MachO::S_ATTR_DEBUG,
Rafael Espindola6b9998b2015-03-10 22:00:25 +0000[diff] [blame]253 SectionKind::getMetadata(), "section_debug_loc");
Evan Cheng76792992011-07-20 05:58:47 +0000[diff] [blame]254 DwarfARangesSection =
Rafael Espindola6ed58a22015-03-10 21:16:18 +0000[diff] [blame]255 Ctx->getMachOSection("__DWARF", "__debug_aranges", MachO::S_ATTR_DEBUG,
256 SectionKind::getMetadata());
Evan Cheng76792992011-07-20 05:58:47 +0000[diff] [blame]257 DwarfRangesSection =
Rafael Espindola6ed58a22015-03-10 21:16:18 +0000[diff] [blame]258 Ctx->getMachOSection("__DWARF", "__debug_ranges", MachO::S_ATTR_DEBUG,
Rafael Espindola6b9998b2015-03-10 22:00:25 +0000[diff] [blame]259 SectionKind::getMetadata(), "debug_range");
Amjad Aboudd7cfb482016-01-07 14:28:20 +0000[diff] [blame]260 DwarfMacinfoSection =
261 Ctx->getMachOSection("__DWARF", "__debug_macinfo", MachO::S_ATTR_DEBUG,
Amjad Aboud8bbce8a2016-02-01 14:09:41 +0000[diff] [blame]262 SectionKind::getMetadata(), "debug_macinfo");
Evan Cheng76792992011-07-20 05:58:47 +0000[diff] [blame]263 DwarfDebugInlineSection =
Rafael Espindola6ed58a22015-03-10 21:16:18 +0000[diff] [blame]264 Ctx->getMachOSection("__DWARF", "__debug_inlined", MachO::S_ATTR_DEBUG,
265 SectionKind::getMetadata());
David Blaikieb073cb92015-12-02 06:21:34 +0000[diff] [blame]266 DwarfCUIndexSection =
267 Ctx->getMachOSection("__DWARF", "__debug_cu_index", MachO::S_ATTR_DEBUG,
268 SectionKind::getMetadata());
David Blaikie24c8ac92015-12-05 03:05:45 +0000[diff] [blame]269 DwarfTUIndexSection =
270 Ctx->getMachOSection("__DWARF", "__debug_tu_index", MachO::S_ATTR_DEBUG,
271 SectionKind::getMetadata());
Rafael Espindola6ed58a22015-03-10 21:16:18 +0000[diff] [blame]272 StackMapSection = Ctx->getMachOSection("__LLVM_STACKMAPS", "__llvm_stackmaps",
273 0, SectionKind::getMetadata());
Evan Cheng76792992011-07-20 05:58:47 +0000[diff] [blame]274
Sanjoy Dasc63244d2015-06-15 18:44:08 +0000[diff] [blame]275 FaultMapSection = Ctx->getMachOSection("__LLVM_FAULTMAPS", "__llvm_faultmaps",
276 0, SectionKind::getMetadata());
277
Evan Cheng76792992011-07-20 05:58:47 +0000[diff] [blame]278 TLSExtraDataSection = TLSTLVSection;
279}
280
Jim Grosbachbb2591f2015-06-04 23:35:03 +0000[diff] [blame]281void MCObjectFileInfo::initELFMCObjectFileInfo(Triple T) {
Joerg Sonnenberger7c442522014-04-30 23:23:14 +0000[diff] [blame]282 switch (T.getArch()) {
283 case Triple::mips:
284 case Triple::mipsel:
Rafael Espindolab9b7ae02013-04-03 03:13:19 +0000[diff] [blame]285 FDECFIEncoding = dwarf::DW_EH_PE_sdata4;
Joerg Sonnenberger7c442522014-04-30 23:23:14 +0000[diff] [blame]286 break;
287 case Triple::mips64:
288 case Triple::mips64el:
Rafael Espindolab9b7ae02013-04-03 03:13:19 +0000[diff] [blame]289 FDECFIEncoding = dwarf::DW_EH_PE_sdata8;
Joerg Sonnenberger7c442522014-04-30 23:23:14 +0000[diff] [blame]290 break;
Rafael Espindolad11591b2014-11-27 17:13:56 +0000[diff] [blame]291 case Triple::x86_64:
292 FDECFIEncoding = dwarf::DW_EH_PE_pcrel |
293 ((CMModel == CodeModel::Large) ? dwarf::DW_EH_PE_sdata8
294 : dwarf::DW_EH_PE_sdata4);
Rafael Espindolad11591b2014-11-27 17:13:56 +0000[diff] [blame]295 break;
Joerg Sonnenberger7c442522014-04-30 23:23:14 +0000[diff] [blame]296 default:
Rafael Espindolaef9d3492013-03-15 05:51:57 +0000[diff] [blame]297 FDECFIEncoding = dwarf::DW_EH_PE_pcrel | dwarf::DW_EH_PE_sdata4;
Joerg Sonnenberger7c442522014-04-30 23:23:14 +0000[diff] [blame]298 break;
299 }
Rafael Espindolaef9d3492013-03-15 05:51:57 +0000[diff] [blame]300
Joerg Sonnenberger7c442522014-04-30 23:23:14 +0000[diff] [blame]301 switch (T.getArch()) {
Joerg Sonnenbergercf86ce12014-05-07 07:49:34 +0000[diff] [blame]302 case Triple::arm:
303 case Triple::armeb:
304 case Triple::thumb:
305 case Triple::thumbeb:
Joerg Sonnenberger94cbb662014-05-13 17:58:13 +0000[diff] [blame]306 if (Ctx->getAsmInfo()->getExceptionHandlingType() == ExceptionHandling::ARM)
307 break;
308 // Fallthrough if not using EHABI
Joerg Sonnenberger6637d4e2014-07-24 19:25:16 +0000[diff] [blame]309 case Triple::ppc:
Joerg Sonnenberger7c442522014-04-30 23:23:14 +0000[diff] [blame]310 case Triple::x86:
Evan Chengbbf3b0d2011-07-20 19:50:42 +0000[diff] [blame]311 PersonalityEncoding = (RelocM == Reloc::PIC_)
Jim Grosbach0dde3492011-11-15 16:46:22 +0000[diff] [blame]312 ? dwarf::DW_EH_PE_indirect | dwarf::DW_EH_PE_pcrel | dwarf::DW_EH_PE_sdata4
313 : dwarf::DW_EH_PE_absptr;
Evan Chengbbf3b0d2011-07-20 19:50:42 +0000[diff] [blame]314 LSDAEncoding = (RelocM == Reloc::PIC_)
315 ? dwarf::DW_EH_PE_pcrel | dwarf::DW_EH_PE_sdata4
316 : dwarf::DW_EH_PE_absptr;
Evan Chengbbf3b0d2011-07-20 19:50:42 +0000[diff] [blame]317 TTypeEncoding = (RelocM == Reloc::PIC_)
Jim Grosbach0dde3492011-11-15 16:46:22 +0000[diff] [blame]318 ? dwarf::DW_EH_PE_indirect | dwarf::DW_EH_PE_pcrel | dwarf::DW_EH_PE_sdata4
319 : dwarf::DW_EH_PE_absptr;
Joerg Sonnenberger7c442522014-04-30 23:23:14 +0000[diff] [blame]320 break;
321 case Triple::x86_64:
Evan Chengbbf3b0d2011-07-20 19:50:42 +0000[diff] [blame]322 if (RelocM == Reloc::PIC_) {
323 PersonalityEncoding = dwarf::DW_EH_PE_indirect | dwarf::DW_EH_PE_pcrel |
324 ((CMModel == CodeModel::Small || CMModel == CodeModel::Medium)
325 ? dwarf::DW_EH_PE_sdata4 : dwarf::DW_EH_PE_sdata8);
326 LSDAEncoding = dwarf::DW_EH_PE_pcrel |
327 (CMModel == CodeModel::Small
328 ? dwarf::DW_EH_PE_sdata4 : dwarf::DW_EH_PE_sdata8);
Evan Chengbbf3b0d2011-07-20 19:50:42 +0000[diff] [blame]329 TTypeEncoding = dwarf::DW_EH_PE_indirect | dwarf::DW_EH_PE_pcrel |
330 ((CMModel == CodeModel::Small || CMModel == CodeModel::Medium)
331 ? dwarf::DW_EH_PE_sdata4 : dwarf::DW_EH_PE_sdata8);
332 } else {
333 PersonalityEncoding =
334 (CMModel == CodeModel::Small || CMModel == CodeModel::Medium)
335 ? dwarf::DW_EH_PE_udata4 : dwarf::DW_EH_PE_absptr;
336 LSDAEncoding = (CMModel == CodeModel::Small)
337 ? dwarf::DW_EH_PE_udata4 : dwarf::DW_EH_PE_absptr;
Evan Chengbbf3b0d2011-07-20 19:50:42 +0000[diff] [blame]338 TTypeEncoding = (CMModel == CodeModel::Small)
339 ? dwarf::DW_EH_PE_udata4 : dwarf::DW_EH_PE_absptr;
340 }
Joerg Sonnenberger7c442522014-04-30 23:23:14 +0000[diff] [blame]341 break;
342 case Triple::aarch64:
343 case Triple::aarch64_be:
Tim Northovere0e3aef2013-01-31 12:12:40 +0000[diff] [blame]344 // The small model guarantees static code/data size < 4GB, but not where it
345 // will be in memory. Most of these could end up >2GB away so even a signed
346 // pc-relative 32-bit address is insufficient, theoretically.
347 if (RelocM == Reloc::PIC_) {
348 PersonalityEncoding = dwarf::DW_EH_PE_indirect | dwarf::DW_EH_PE_pcrel |
349 dwarf::DW_EH_PE_sdata8;
350 LSDAEncoding = dwarf::DW_EH_PE_pcrel | dwarf::DW_EH_PE_sdata8;
Tim Northovere0e3aef2013-01-31 12:12:40 +0000[diff] [blame]351 TTypeEncoding = dwarf::DW_EH_PE_indirect | dwarf::DW_EH_PE_pcrel |
352 dwarf::DW_EH_PE_sdata8;
353 } else {
354 PersonalityEncoding = dwarf::DW_EH_PE_absptr;
355 LSDAEncoding = dwarf::DW_EH_PE_absptr;
Tim Northovere0e3aef2013-01-31 12:12:40 +0000[diff] [blame]356 TTypeEncoding = dwarf::DW_EH_PE_absptr;
357 }
Joerg Sonnenberger7c442522014-04-30 23:23:14 +0000[diff] [blame]358 break;
Logan Chienc0029812014-05-30 16:48:56 +0000[diff] [blame]359 case Triple::mips:
360 case Triple::mipsel:
Petar Jovanovic35f05742014-11-05 22:42:31 +0000[diff] [blame]361 case Triple::mips64:
362 case Triple::mips64el:
Daniel Sandersc95f3f82015-06-02 20:32:50 +0000[diff] [blame]363 // MIPS uses indirect pointer to refer personality functions and types, so
364 // that the eh_frame section can be read-only. DW.ref.personality will be
365 // generated for relocation.
Logan Chienc0029812014-05-30 16:48:56 +0000[diff] [blame]366 PersonalityEncoding = dwarf::DW_EH_PE_indirect;
Daniel Sandersc95f3f82015-06-02 20:32:50 +0000[diff] [blame]367 // FIXME: The N64 ABI probably ought to use DW_EH_PE_sdata8 but we can't
368 // identify N64 from just a triple.
369 TTypeEncoding = dwarf::DW_EH_PE_indirect | dwarf::DW_EH_PE_pcrel |
370 dwarf::DW_EH_PE_sdata4;
371 // We don't support PC-relative LSDA references in GAS so we use the default
372 // DW_EH_PE_absptr for those.
Logan Chienc0029812014-05-30 16:48:56 +0000[diff] [blame]373 break;
Joerg Sonnenberger7c442522014-04-30 23:23:14 +0000[diff] [blame]374 case Triple::ppc64:
375 case Triple::ppc64le:
Adhemerval Zanella1ae22482013-01-09 17:08:15 +0000[diff] [blame]376 PersonalityEncoding = dwarf::DW_EH_PE_indirect | dwarf::DW_EH_PE_pcrel |
377 dwarf::DW_EH_PE_udata8;
Adhemerval Zanella1ae22482013-01-09 17:08:15 +0000[diff] [blame]378 LSDAEncoding = dwarf::DW_EH_PE_pcrel | dwarf::DW_EH_PE_udata8;
Adhemerval Zanella1ae22482013-01-09 17:08:15 +0000[diff] [blame]379 TTypeEncoding = dwarf::DW_EH_PE_indirect | dwarf::DW_EH_PE_pcrel |
380 dwarf::DW_EH_PE_udata8;
Joerg Sonnenberger7c442522014-04-30 23:23:14 +0000[diff] [blame]381 break;
Douglas Katzman9160e782015-04-29 20:30:57 +0000[diff] [blame]382 case Triple::sparcel:
Joerg Sonnenberger7c442522014-04-30 23:23:14 +0000[diff] [blame]383 case Triple::sparc:
Jakob Stoklund Olesen83c67732014-01-28 02:52:26 +0000[diff] [blame]384 if (RelocM == Reloc::PIC_) {
385 LSDAEncoding = dwarf::DW_EH_PE_pcrel | dwarf::DW_EH_PE_sdata4;
386 PersonalityEncoding = dwarf::DW_EH_PE_indirect | dwarf::DW_EH_PE_pcrel |
387 dwarf::DW_EH_PE_sdata4;
Jakob Stoklund Olesen83c67732014-01-28 02:52:26 +0000[diff] [blame]388 TTypeEncoding = dwarf::DW_EH_PE_indirect | dwarf::DW_EH_PE_pcrel |
389 dwarf::DW_EH_PE_sdata4;
390 } else {
391 LSDAEncoding = dwarf::DW_EH_PE_absptr;
392 PersonalityEncoding = dwarf::DW_EH_PE_absptr;
Jakob Stoklund Olesen83c67732014-01-28 02:52:26 +0000[diff] [blame]393 TTypeEncoding = dwarf::DW_EH_PE_absptr;
394 }
Joerg Sonnenbergerfa9cf652014-04-30 23:36:24 +0000[diff] [blame]395 break;
Joerg Sonnenberger7c442522014-04-30 23:23:14 +0000[diff] [blame]396 case Triple::sparcv9:
Jakob Stoklund Olesen83c67732014-01-28 02:52:26 +0000[diff] [blame]397 LSDAEncoding = dwarf::DW_EH_PE_pcrel | dwarf::DW_EH_PE_sdata4;
398 if (RelocM == Reloc::PIC_) {
399 PersonalityEncoding = dwarf::DW_EH_PE_indirect | dwarf::DW_EH_PE_pcrel |
400 dwarf::DW_EH_PE_sdata4;
Jakob Stoklund Olesen83c67732014-01-28 02:52:26 +0000[diff] [blame]401 TTypeEncoding = dwarf::DW_EH_PE_indirect | dwarf::DW_EH_PE_pcrel |
402 dwarf::DW_EH_PE_sdata4;
403 } else {
404 PersonalityEncoding = dwarf::DW_EH_PE_absptr;
Jakob Stoklund Olesen83c67732014-01-28 02:52:26 +0000[diff] [blame]405 TTypeEncoding = dwarf::DW_EH_PE_absptr;
406 }
Joerg Sonnenbergerfa9cf652014-04-30 23:36:24 +0000[diff] [blame]407 break;
Joerg Sonnenberger7c442522014-04-30 23:23:14 +0000[diff] [blame]408 case Triple::systemz:
Ulrich Weigand0213e7f2013-05-06 16:11:12 +0000[diff] [blame]409 // All currently-defined code models guarantee that 4-byte PC-relative
410 // values will be in range.
Ulrich Weigande7c6dfe2013-05-06 17:28:30 +0000[diff] [blame]411 if (RelocM == Reloc::PIC_) {
412 PersonalityEncoding = dwarf::DW_EH_PE_indirect | dwarf::DW_EH_PE_pcrel |
413 dwarf::DW_EH_PE_sdata4;
414 LSDAEncoding = dwarf::DW_EH_PE_pcrel | dwarf::DW_EH_PE_sdata4;
Ulrich Weigande7c6dfe2013-05-06 17:28:30 +0000[diff] [blame]415 TTypeEncoding = dwarf::DW_EH_PE_indirect | dwarf::DW_EH_PE_pcrel |
416 dwarf::DW_EH_PE_sdata4;
417 } else {
418 PersonalityEncoding = dwarf::DW_EH_PE_absptr;
419 LSDAEncoding = dwarf::DW_EH_PE_absptr;
Ulrich Weigande7c6dfe2013-05-06 17:28:30 +0000[diff] [blame]420 TTypeEncoding = dwarf::DW_EH_PE_absptr;
421 }
Joerg Sonnenbergerfa9cf652014-04-30 23:36:24 +0000[diff] [blame]422 break;
Joerg Sonnenberger7c442522014-04-30 23:23:14 +0000[diff] [blame]423 default:
424 break;
Evan Chengbbf3b0d2011-07-20 19:50:42 +0000[diff] [blame]425 }
426
Rafael Espindola889d7bb2015-11-06 15:30:45 +0000[diff] [blame]427 unsigned EHSectionType = T.getArch() == Triple::x86_64
428 ? ELF::SHT_X86_64_UNWIND
429 : ELF::SHT_PROGBITS;
Rafael Espindolab20b7062015-11-06 13:35:35 +0000[diff] [blame]430
David Chisnall07f8d3e2012-02-17 17:31:15 +0000[diff] [blame]431 // Solaris requires different flags for .eh_frame to seemingly every other
432 // platform.
Rafael Espindola889d7bb2015-11-06 15:30:45 +0000[diff] [blame]433 unsigned EHSectionFlags = ELF::SHF_ALLOC;
Rafael Espindolab20b7062015-11-06 13:35:35 +0000[diff] [blame]434 if (T.isOSSolaris() && T.getArch() != Triple::x86_64)
435 EHSectionFlags |= ELF::SHF_WRITE;
David Chisnall07f8d3e2012-02-17 17:31:15 +0000[diff] [blame]436
Evan Cheng76792992011-07-20 05:58:47 +0000[diff] [blame]437 // ELF
Rafael Espindolaba31e272015-01-29 17:33:21 +0000[diff] [blame]438 BSSSection = Ctx->getELFSection(".bss", ELF::SHT_NOBITS,
439 ELF::SHF_WRITE | ELF::SHF_ALLOC);
Evan Cheng76792992011-07-20 05:58:47 +0000[diff] [blame]440
Rafael Espindolaba31e272015-01-29 17:33:21 +0000[diff] [blame]441 TextSection = Ctx->getELFSection(".text", ELF::SHT_PROGBITS,
442 ELF::SHF_EXECINSTR | ELF::SHF_ALLOC);
Evan Cheng76792992011-07-20 05:58:47 +0000[diff] [blame]443
Rafael Espindolaba31e272015-01-29 17:33:21 +0000[diff] [blame]444 DataSection = Ctx->getELFSection(".data", ELF::SHT_PROGBITS,
445 ELF::SHF_WRITE | ELF::SHF_ALLOC);
Evan Cheng76792992011-07-20 05:58:47 +0000[diff] [blame]446
447 ReadOnlySection =
Rafael Espindolaba31e272015-01-29 17:33:21 +0000[diff] [blame]448 Ctx->getELFSection(".rodata", ELF::SHT_PROGBITS, ELF::SHF_ALLOC);
Evan Cheng76792992011-07-20 05:58:47 +0000[diff] [blame]449
450 TLSDataSection =
Rafael Espindolaba31e272015-01-29 17:33:21 +0000[diff] [blame]451 Ctx->getELFSection(".tdata", ELF::SHT_PROGBITS,
452 ELF::SHF_ALLOC | ELF::SHF_TLS | ELF::SHF_WRITE);
Evan Cheng76792992011-07-20 05:58:47 +0000[diff] [blame]453
Rafael Espindolaba31e272015-01-29 17:33:21 +0000[diff] [blame]454 TLSBSSSection = Ctx->getELFSection(
455 ".tbss", ELF::SHT_NOBITS, ELF::SHF_ALLOC | ELF::SHF_TLS | ELF::SHF_WRITE);
Evan Cheng76792992011-07-20 05:58:47 +0000[diff] [blame]456
Rafael Espindolaba31e272015-01-29 17:33:21 +0000[diff] [blame]457 DataRelROSection = Ctx->getELFSection(".data.rel.ro", ELF::SHT_PROGBITS,
458 ELF::SHF_ALLOC | ELF::SHF_WRITE);
Evan Cheng76792992011-07-20 05:58:47 +0000[diff] [blame]459
Evan Cheng76792992011-07-20 05:58:47 +0000[diff] [blame]460 MergeableConst4Section =
Rafael Espindolaba31e272015-01-29 17:33:21 +0000[diff] [blame]461 Ctx->getELFSection(".rodata.cst4", ELF::SHT_PROGBITS,
462 ELF::SHF_ALLOC | ELF::SHF_MERGE, 4, "");
Evan Cheng76792992011-07-20 05:58:47 +0000[diff] [blame]463
464 MergeableConst8Section =
Rafael Espindolaba31e272015-01-29 17:33:21 +0000[diff] [blame]465 Ctx->getELFSection(".rodata.cst8", ELF::SHT_PROGBITS,
466 ELF::SHF_ALLOC | ELF::SHF_MERGE, 8, "");
Evan Cheng76792992011-07-20 05:58:47 +0000[diff] [blame]467
468 MergeableConst16Section =
Rafael Espindolaba31e272015-01-29 17:33:21 +0000[diff] [blame]469 Ctx->getELFSection(".rodata.cst16", ELF::SHT_PROGBITS,
470 ELF::SHF_ALLOC | ELF::SHF_MERGE, 16, "");
Evan Cheng76792992011-07-20 05:58:47 +0000[diff] [blame]471
Rafael Espindolaba31e272015-01-29 17:33:21 +0000[diff] [blame]472 StaticCtorSection = Ctx->getELFSection(".ctors", ELF::SHT_PROGBITS,
473 ELF::SHF_ALLOC | ELF::SHF_WRITE);
Evan Cheng76792992011-07-20 05:58:47 +0000[diff] [blame]474
Rafael Espindolaba31e272015-01-29 17:33:21 +0000[diff] [blame]475 StaticDtorSection = Ctx->getELFSection(".dtors", ELF::SHT_PROGBITS,
476 ELF::SHF_ALLOC | ELF::SHF_WRITE);
Evan Cheng76792992011-07-20 05:58:47 +0000[diff] [blame]477
478 // Exception Handling Sections.
479
480 // FIXME: We're emitting LSDA info into a readonly section on ELF, even though
481 // it contains relocatable pointers. In PIC mode, this is probably a big
482 // runtime hit for C++ apps. Either the contents of the LSDA need to be
483 // adjusted or this should be a data section.
Rafael Espindolaba31e272015-01-29 17:33:21 +0000[diff] [blame]484 LSDASection = Ctx->getELFSection(".gcc_except_table", ELF::SHT_PROGBITS,
485 ELF::SHF_ALLOC);
Evan Cheng76792992011-07-20 05:58:47 +0000[diff] [blame]486
Craig Topperbb694de2014-04-13 04:57:38 +0000[diff] [blame]487 COFFDebugSymbolsSection = nullptr;
Reid Klecknerf3b9ba42016-01-29 18:16:43 +0000[diff] [blame]488 COFFDebugTypesSection = nullptr;
Timur Iskhodzhanovf166f6c2014-01-30 01:39:17 +0000[diff] [blame]489
Evan Cheng76792992011-07-20 05:58:47 +0000[diff] [blame]490 // Debug Info Sections.
Rafael Espindola6b9998b2015-03-10 22:00:25 +0000[diff] [blame]491 DwarfAbbrevSection = Ctx->getELFSection(".debug_abbrev", ELF::SHT_PROGBITS, 0,
492 "section_abbrev");
493 DwarfInfoSection =
494 Ctx->getELFSection(".debug_info", ELF::SHT_PROGBITS, 0, "section_info");
Rafael Espindola23562fc2015-03-11 04:20:31 +0000[diff] [blame]495 DwarfLineSection = Ctx->getELFSection(".debug_line", ELF::SHT_PROGBITS, 0);
Rafael Espindolaba31e272015-01-29 17:33:21 +0000[diff] [blame]496 DwarfFrameSection = Ctx->getELFSection(".debug_frame", ELF::SHT_PROGBITS, 0);
Krzysztof Parzyszek228daa62013-02-12 18:00:14 +0000[diff] [blame]497 DwarfPubNamesSection =
Rafael Espindolaba31e272015-01-29 17:33:21 +0000[diff] [blame]498 Ctx->getELFSection(".debug_pubnames", ELF::SHT_PROGBITS, 0);
Evan Cheng76792992011-07-20 05:58:47 +0000[diff] [blame]499 DwarfPubTypesSection =
Rafael Espindolaba31e272015-01-29 17:33:21 +0000[diff] [blame]500 Ctx->getELFSection(".debug_pubtypes", ELF::SHT_PROGBITS, 0);
Eric Christopherb0e76942013-09-09 20:03:14 +0000[diff] [blame]501 DwarfGnuPubNamesSection =
Rafael Espindolaba31e272015-01-29 17:33:21 +0000[diff] [blame]502 Ctx->getELFSection(".debug_gnu_pubnames", ELF::SHT_PROGBITS, 0);
Eric Christopherb0e76942013-09-09 20:03:14 +0000[diff] [blame]503 DwarfGnuPubTypesSection =
Rafael Espindolaba31e272015-01-29 17:33:21 +0000[diff] [blame]504 Ctx->getELFSection(".debug_gnu_pubtypes", ELF::SHT_PROGBITS, 0);
Rafael Espindola23562fc2015-03-11 04:20:31 +0000[diff] [blame]505 DwarfStrSection =
506 Ctx->getELFSection(".debug_str", ELF::SHT_PROGBITS,
507 ELF::SHF_MERGE | ELF::SHF_STRINGS, 1, "");
508 DwarfLocSection = Ctx->getELFSection(".debug_loc", ELF::SHT_PROGBITS, 0);
Evan Cheng76792992011-07-20 05:58:47 +0000[diff] [blame]509 DwarfARangesSection =
Rafael Espindolaba31e272015-01-29 17:33:21 +0000[diff] [blame]510 Ctx->getELFSection(".debug_aranges", ELF::SHT_PROGBITS, 0);
Evan Cheng76792992011-07-20 05:58:47 +0000[diff] [blame]511 DwarfRangesSection =
Rafael Espindola6b9998b2015-03-10 22:00:25 +0000[diff] [blame]512 Ctx->getELFSection(".debug_ranges", ELF::SHT_PROGBITS, 0, "debug_range");
Amjad Aboud8bbce8a2016-02-01 14:09:41 +0000[diff] [blame]513 DwarfMacinfoSection = Ctx->getELFSection(".debug_macinfo", ELF::SHT_PROGBITS,
514 0, "debug_macinfo");
Eric Christopher27ed8ec2012-11-28 02:49:34 +0000[diff] [blame]515
516 // DWARF5 Experimental Debug Info
517
518 // Accelerator Tables
Eric Christophera0ad67d2012-10-08 21:41:30 +0000[diff] [blame]519 DwarfAccelNamesSection =
Rafael Espindola6b9998b2015-03-10 22:00:25 +0000[diff] [blame]520 Ctx->getELFSection(".apple_names", ELF::SHT_PROGBITS, 0, "names_begin");
Eric Christophera0ad67d2012-10-08 21:41:30 +0000[diff] [blame]521 DwarfAccelObjCSection =
Rafael Espindola6b9998b2015-03-10 22:00:25 +0000[diff] [blame]522 Ctx->getELFSection(".apple_objc", ELF::SHT_PROGBITS, 0, "objc_begin");
523 DwarfAccelNamespaceSection = Ctx->getELFSection(
524 ".apple_namespaces", ELF::SHT_PROGBITS, 0, "namespac_begin");
Eric Christophera0ad67d2012-10-08 21:41:30 +0000[diff] [blame]525 DwarfAccelTypesSection =
Rafael Espindola6b9998b2015-03-10 22:00:25 +0000[diff] [blame]526 Ctx->getELFSection(".apple_types", ELF::SHT_PROGBITS, 0, "types_begin");
Eric Christopherc3b434b2012-11-28 02:49:38 +0000[diff] [blame]527
528 // Fission Sections
Rafael Espindola23562fc2015-03-11 04:20:31 +0000[diff] [blame]529 DwarfInfoDWOSection =
530 Ctx->getELFSection(".debug_info.dwo", ELF::SHT_PROGBITS, 0);
531 DwarfTypesDWOSection =
532 Ctx->getELFSection(".debug_types.dwo", ELF::SHT_PROGBITS, 0);
533 DwarfAbbrevDWOSection =
534 Ctx->getELFSection(".debug_abbrev.dwo", ELF::SHT_PROGBITS, 0);
535 DwarfStrDWOSection =
536 Ctx->getELFSection(".debug_str.dwo", ELF::SHT_PROGBITS,
537 ELF::SHF_MERGE | ELF::SHF_STRINGS, 1, "");
Eric Christopher3c230092012-11-30 06:47:06 +0000[diff] [blame]538 DwarfLineDWOSection =
Rafael Espindolaba31e272015-01-29 17:33:21 +0000[diff] [blame]539 Ctx->getELFSection(".debug_line.dwo", ELF::SHT_PROGBITS, 0);
Eric Christopher3c230092012-11-30 06:47:06 +0000[diff] [blame]540 DwarfLocDWOSection =
Rafael Espindola6b9998b2015-03-10 22:00:25 +0000[diff] [blame]541 Ctx->getELFSection(".debug_loc.dwo", ELF::SHT_PROGBITS, 0, "skel_loc");
Eric Christopherc0fa8672013-01-04 17:59:22 +0000[diff] [blame]542 DwarfStrOffDWOSection =
Rafael Espindolaba31e272015-01-29 17:33:21 +0000[diff] [blame]543 Ctx->getELFSection(".debug_str_offsets.dwo", ELF::SHT_PROGBITS, 0);
Rafael Espindola6b9998b2015-03-10 22:00:25 +0000[diff] [blame]544 DwarfAddrSection =
545 Ctx->getELFSection(".debug_addr", ELF::SHT_PROGBITS, 0, "addr_sec");
Philip Reames76846182014-08-01 18:47:09 +0000[diff] [blame]546
David Blaikieb073cb92015-12-02 06:21:34 +0000[diff] [blame]547 // DWP Sections
548 DwarfCUIndexSection =
549 Ctx->getELFSection(".debug_cu_index", ELF::SHT_PROGBITS, 0);
David Blaikie24c8ac92015-12-05 03:05:45 +0000[diff] [blame]550 DwarfTUIndexSection =
551 Ctx->getELFSection(".debug_tu_index", ELF::SHT_PROGBITS, 0);
David Blaikieb073cb92015-12-02 06:21:34 +0000[diff] [blame]552
Philip Reames76846182014-08-01 18:47:09 +0000[diff] [blame]553 StackMapSection =
Rafael Espindolaba31e272015-01-29 17:33:21 +0000[diff] [blame]554 Ctx->getELFSection(".llvm_stackmaps", ELF::SHT_PROGBITS, ELF::SHF_ALLOC);
Sanjoy Dasc63244d2015-06-15 18:44:08 +0000[diff] [blame]555
556 FaultMapSection =
557 Ctx->getELFSection(".llvm_faultmaps", ELF::SHT_PROGBITS, ELF::SHF_ALLOC);
Rafael Espindola889d7bb2015-11-06 15:30:45 +0000[diff] [blame]558
559 EHFrameSection =
560 Ctx->getELFSection(".eh_frame", EHSectionType, EHSectionFlags);
Evan Cheng76792992011-07-20 05:58:47 +0000[diff] [blame]561}
562
Jim Grosbachbb2591f2015-06-04 23:35:03 +0000[diff] [blame]563void MCObjectFileInfo::initCOFFMCObjectFileInfo(Triple T) {
Rafael Espindola889d7bb2015-11-06 15:30:45 +0000[diff] [blame]564 EHFrameSection = Ctx->getCOFFSection(
565 ".eh_frame", COFF::IMAGE_SCN_CNT_INITIALIZED_DATA |
566 COFF::IMAGE_SCN_MEM_READ | COFF::IMAGE_SCN_MEM_WRITE,
Rafael Espindola449711c2015-11-18 06:02:15 +0000[diff] [blame]567 SectionKind::getData());
Rafael Espindola889d7bb2015-11-06 15:30:45 +0000[diff] [blame]568
Saleem Abdulrasool70a02062014-06-08 03:57:49 +0000[diff] [blame]569 bool IsWoA = T.getArch() == Triple::arm || T.getArch() == Triple::thumb;
570
David Majnemer48227a32014-09-21 09:18:07 +0000[diff] [blame]571 CommDirectiveSupportsAlignment = true;
David Majnemera9bdb322014-04-08 22:33:40 +0000[diff] [blame]572
Evan Cheng76792992011-07-20 05:58:47 +0000[diff] [blame]573 // COFF
Rafael Espindola6ed58a22015-03-10 21:16:18 +0000[diff] [blame]574 BSSSection = Ctx->getCOFFSection(
575 ".bss", COFF::IMAGE_SCN_CNT_UNINITIALIZED_DATA |
576 COFF::IMAGE_SCN_MEM_READ | COFF::IMAGE_SCN_MEM_WRITE,
577 SectionKind::getBSS());
578 TextSection = Ctx->getCOFFSection(
579 ".text",
580 (IsWoA ? COFF::IMAGE_SCN_MEM_16BIT : (COFF::SectionCharacteristics)0) |
581 COFF::IMAGE_SCN_CNT_CODE | COFF::IMAGE_SCN_MEM_EXECUTE |
582 COFF::IMAGE_SCN_MEM_READ,
583 SectionKind::getText());
584 DataSection = Ctx->getCOFFSection(
585 ".data", COFF::IMAGE_SCN_CNT_INITIALIZED_DATA | COFF::IMAGE_SCN_MEM_READ |
586 COFF::IMAGE_SCN_MEM_WRITE,
Rafael Espindola449711c2015-11-18 06:02:15 +0000[diff] [blame]587 SectionKind::getData());
Rafael Espindola6ed58a22015-03-10 21:16:18 +0000[diff] [blame]588 ReadOnlySection = Ctx->getCOFFSection(
589 ".rdata", COFF::IMAGE_SCN_CNT_INITIALIZED_DATA | COFF::IMAGE_SCN_MEM_READ,
590 SectionKind::getReadOnly());
Saleem Abdulrasoola35f04a2014-06-08 00:34:23 +0000[diff] [blame]591
Saleem Abdulrasooled7fc4b2014-06-08 00:34:27 +0000[diff] [blame]592 if (T.isKnownWindowsMSVCEnvironment() || T.isWindowsItaniumEnvironment()) {
Michael J. Spencerb560d072012-02-23 21:56:08 +0000[diff] [blame]593 StaticCtorSection =
Rafael Espindola6ed58a22015-03-10 21:16:18 +0000[diff] [blame]594 Ctx->getCOFFSection(".CRT$XCU", COFF::IMAGE_SCN_CNT_INITIALIZED_DATA |
595 COFF::IMAGE_SCN_MEM_READ,
596 SectionKind::getReadOnly());
Saleem Abdulrasoola35f04a2014-06-08 00:34:23 +0000[diff] [blame]597 StaticDtorSection =
Rafael Espindola6ed58a22015-03-10 21:16:18 +0000[diff] [blame]598 Ctx->getCOFFSection(".CRT$XTX", COFF::IMAGE_SCN_CNT_INITIALIZED_DATA |
599 COFF::IMAGE_SCN_MEM_READ,
600 SectionKind::getReadOnly());
Michael J. Spencerb560d072012-02-23 21:56:08 +0000[diff] [blame]601 } else {
Rafael Espindola6ed58a22015-03-10 21:16:18 +0000[diff] [blame]602 StaticCtorSection = Ctx->getCOFFSection(
603 ".ctors", COFF::IMAGE_SCN_CNT_INITIALIZED_DATA |
604 COFF::IMAGE_SCN_MEM_READ | COFF::IMAGE_SCN_MEM_WRITE,
Rafael Espindola449711c2015-11-18 06:02:15 +0000[diff] [blame]605 SectionKind::getData());
Rafael Espindola6ed58a22015-03-10 21:16:18 +0000[diff] [blame]606 StaticDtorSection = Ctx->getCOFFSection(
607 ".dtors", COFF::IMAGE_SCN_CNT_INITIALIZED_DATA |
608 COFF::IMAGE_SCN_MEM_READ | COFF::IMAGE_SCN_MEM_WRITE,
Rafael Espindola449711c2015-11-18 06:02:15 +0000[diff] [blame]609 SectionKind::getData());
Anton Korobeynikov37d73002012-09-23 15:53:47 +0000[diff] [blame]610 }
Evan Cheng76792992011-07-20 05:58:47 +0000[diff] [blame]611
612 // FIXME: We're emitting LSDA info into a readonly section on COFF, even
613 // though it contains relocatable pointers. In PIC mode, this is probably a
614 // big runtime hit for C++ apps. Either the contents of the LSDA need to be
615 // adjusted or this should be a data section.
NAKAMURA Takumi1db59952014-06-25 12:41:52 +0000[diff] [blame]616 if (T.getArch() == Triple::x86_64) {
617 // On Windows 64 with SEH, the LSDA is emitted into the .xdata section
Hans Wennborg083ca9b2015-10-06 23:24:35 +0000[diff] [blame]618 LSDASection = nullptr;
NAKAMURA Takumi1db59952014-06-25 12:41:52 +0000[diff] [blame]619 } else {
620 LSDASection = Ctx->getCOFFSection(".gcc_except_table",
621 COFF::IMAGE_SCN_CNT_INITIALIZED_DATA |
622 COFF::IMAGE_SCN_MEM_READ,
623 SectionKind::getReadOnly());
624 }
Evan Cheng76792992011-07-20 05:58:47 +0000[diff] [blame]625
626 // Debug info.
Timur Iskhodzhanov31377c52014-01-28 03:48:44 +0000[diff] [blame]627 COFFDebugSymbolsSection =
Reid Klecknerf3b9ba42016-01-29 18:16:43 +0000[diff] [blame]628 Ctx->getCOFFSection(".debug$S", (COFF::IMAGE_SCN_MEM_DISCARDABLE |
629 COFF::IMAGE_SCN_CNT_INITIALIZED_DATA |
630 COFF::IMAGE_SCN_MEM_READ),
631 SectionKind::getMetadata());
632 COFFDebugTypesSection =
633 Ctx->getCOFFSection(".debug$T", (COFF::IMAGE_SCN_MEM_DISCARDABLE |
634 COFF::IMAGE_SCN_CNT_INITIALIZED_DATA |
635 COFF::IMAGE_SCN_MEM_READ),
Rafael Espindola6ed58a22015-03-10 21:16:18 +0000[diff] [blame]636 SectionKind::getMetadata());
Timur Iskhodzhanov31377c52014-01-28 03:48:44 +0000[diff] [blame]637
Rafael Espindola6ed58a22015-03-10 21:16:18 +0000[diff] [blame]638 DwarfAbbrevSection = Ctx->getCOFFSection(
639 ".debug_abbrev",
640 COFF::IMAGE_SCN_MEM_DISCARDABLE | COFF::IMAGE_SCN_CNT_INITIALIZED_DATA |
641 COFF::IMAGE_SCN_MEM_READ,
Rafael Espindola6b9998b2015-03-10 22:00:25 +0000[diff] [blame]642 SectionKind::getMetadata(), "section_abbrev");
Rafael Espindola6ed58a22015-03-10 21:16:18 +0000[diff] [blame]643 DwarfInfoSection = Ctx->getCOFFSection(
644 ".debug_info",
645 COFF::IMAGE_SCN_MEM_DISCARDABLE | COFF::IMAGE_SCN_CNT_INITIALIZED_DATA |
646 COFF::IMAGE_SCN_MEM_READ,
Rafael Espindola6b9998b2015-03-10 22:00:25 +0000[diff] [blame]647 SectionKind::getMetadata(), "section_info");
Rafael Espindola6ed58a22015-03-10 21:16:18 +0000[diff] [blame]648 DwarfLineSection = Ctx->getCOFFSection(
649 ".debug_line",
650 COFF::IMAGE_SCN_MEM_DISCARDABLE | COFF::IMAGE_SCN_CNT_INITIALIZED_DATA |
651 COFF::IMAGE_SCN_MEM_READ,
Rafael Espindola6b9998b2015-03-10 22:00:25 +0000[diff] [blame]652 SectionKind::getMetadata(), "section_line");
653
Rafael Espindola6ed58a22015-03-10 21:16:18 +0000[diff] [blame]654 DwarfFrameSection = Ctx->getCOFFSection(
655 ".debug_frame",
656 COFF::IMAGE_SCN_MEM_DISCARDABLE | COFF::IMAGE_SCN_CNT_INITIALIZED_DATA |
657 COFF::IMAGE_SCN_MEM_READ,
658 SectionKind::getMetadata());
659 DwarfPubNamesSection = Ctx->getCOFFSection(
660 ".debug_pubnames",
661 COFF::IMAGE_SCN_MEM_DISCARDABLE | COFF::IMAGE_SCN_CNT_INITIALIZED_DATA |
662 COFF::IMAGE_SCN_MEM_READ,
663 SectionKind::getMetadata());
664 DwarfPubTypesSection = Ctx->getCOFFSection(
665 ".debug_pubtypes",
666 COFF::IMAGE_SCN_MEM_DISCARDABLE | COFF::IMAGE_SCN_CNT_INITIALIZED_DATA |
667 COFF::IMAGE_SCN_MEM_READ,
668 SectionKind::getMetadata());
669 DwarfGnuPubNamesSection = Ctx->getCOFFSection(
670 ".debug_gnu_pubnames",
671 COFF::IMAGE_SCN_MEM_DISCARDABLE | COFF::IMAGE_SCN_CNT_INITIALIZED_DATA |
672 COFF::IMAGE_SCN_MEM_READ,
673 SectionKind::getMetadata());
674 DwarfGnuPubTypesSection = Ctx->getCOFFSection(
675 ".debug_gnu_pubtypes",
676 COFF::IMAGE_SCN_MEM_DISCARDABLE | COFF::IMAGE_SCN_CNT_INITIALIZED_DATA |
677 COFF::IMAGE_SCN_MEM_READ,
678 SectionKind::getMetadata());
679 DwarfStrSection = Ctx->getCOFFSection(
680 ".debug_str",
681 COFF::IMAGE_SCN_MEM_DISCARDABLE | COFF::IMAGE_SCN_CNT_INITIALIZED_DATA |
682 COFF::IMAGE_SCN_MEM_READ,
Rafael Espindola6b9998b2015-03-10 22:00:25 +0000[diff] [blame]683 SectionKind::getMetadata(), "info_string");
Rafael Espindola6ed58a22015-03-10 21:16:18 +0000[diff] [blame]684 DwarfLocSection = Ctx->getCOFFSection(
685 ".debug_loc",
686 COFF::IMAGE_SCN_MEM_DISCARDABLE | COFF::IMAGE_SCN_CNT_INITIALIZED_DATA |
687 COFF::IMAGE_SCN_MEM_READ,
Rafael Espindola6b9998b2015-03-10 22:00:25 +0000[diff] [blame]688 SectionKind::getMetadata(), "section_debug_loc");
Rafael Espindola6ed58a22015-03-10 21:16:18 +0000[diff] [blame]689 DwarfARangesSection = Ctx->getCOFFSection(
690 ".debug_aranges",
691 COFF::IMAGE_SCN_MEM_DISCARDABLE | COFF::IMAGE_SCN_CNT_INITIALIZED_DATA |
692 COFF::IMAGE_SCN_MEM_READ,
693 SectionKind::getMetadata());
694 DwarfRangesSection = Ctx->getCOFFSection(
695 ".debug_ranges",
696 COFF::IMAGE_SCN_MEM_DISCARDABLE | COFF::IMAGE_SCN_CNT_INITIALIZED_DATA |
697 COFF::IMAGE_SCN_MEM_READ,
Rafael Espindola6b9998b2015-03-10 22:00:25 +0000[diff] [blame]698 SectionKind::getMetadata(), "debug_range");
Amjad Aboudd7cfb482016-01-07 14:28:20 +0000[diff] [blame]699 DwarfMacinfoSection = Ctx->getCOFFSection(
700 ".debug_macinfo",
701 COFF::IMAGE_SCN_MEM_DISCARDABLE | COFF::IMAGE_SCN_CNT_INITIALIZED_DATA |
702 COFF::IMAGE_SCN_MEM_READ,
Amjad Aboud8bbce8a2016-02-01 14:09:41 +0000[diff] [blame]703 SectionKind::getMetadata(), "debug_macinfo");
Rafael Espindola6ed58a22015-03-10 21:16:18 +0000[diff] [blame]704 DwarfInfoDWOSection = Ctx->getCOFFSection(
705 ".debug_info.dwo",
706 COFF::IMAGE_SCN_MEM_DISCARDABLE | COFF::IMAGE_SCN_CNT_INITIALIZED_DATA |
707 COFF::IMAGE_SCN_MEM_READ,
Rafael Espindola6b9998b2015-03-10 22:00:25 +0000[diff] [blame]708 SectionKind::getMetadata(), "section_info_dwo");
Rafael Espindola6ed58a22015-03-10 21:16:18 +0000[diff] [blame]709 DwarfTypesDWOSection = Ctx->getCOFFSection(
710 ".debug_types.dwo",
711 COFF::IMAGE_SCN_MEM_DISCARDABLE | COFF::IMAGE_SCN_CNT_INITIALIZED_DATA |
712 COFF::IMAGE_SCN_MEM_READ,
Rafael Espindolab03bc792015-03-10 23:06:32 +0000[diff] [blame]713 SectionKind::getMetadata(), "section_types_dwo");
Rafael Espindola6ed58a22015-03-10 21:16:18 +0000[diff] [blame]714 DwarfAbbrevDWOSection = Ctx->getCOFFSection(
715 ".debug_abbrev.dwo",
716 COFF::IMAGE_SCN_MEM_DISCARDABLE | COFF::IMAGE_SCN_CNT_INITIALIZED_DATA |
717 COFF::IMAGE_SCN_MEM_READ,
Rafael Espindola6b9998b2015-03-10 22:00:25 +0000[diff] [blame]718 SectionKind::getMetadata(), "section_abbrev_dwo");
Rafael Espindola6ed58a22015-03-10 21:16:18 +0000[diff] [blame]719 DwarfStrDWOSection = Ctx->getCOFFSection(
720 ".debug_str.dwo",
721 COFF::IMAGE_SCN_MEM_DISCARDABLE | COFF::IMAGE_SCN_CNT_INITIALIZED_DATA |
722 COFF::IMAGE_SCN_MEM_READ,
Rafael Espindola6b9998b2015-03-10 22:00:25 +0000[diff] [blame]723 SectionKind::getMetadata(), "skel_string");
Rafael Espindola6ed58a22015-03-10 21:16:18 +0000[diff] [blame]724 DwarfLineDWOSection = Ctx->getCOFFSection(
725 ".debug_line.dwo",
726 COFF::IMAGE_SCN_MEM_DISCARDABLE | COFF::IMAGE_SCN_CNT_INITIALIZED_DATA |
727 COFF::IMAGE_SCN_MEM_READ,
728 SectionKind::getMetadata());
729 DwarfLocDWOSection = Ctx->getCOFFSection(
730 ".debug_loc.dwo",
731 COFF::IMAGE_SCN_MEM_DISCARDABLE | COFF::IMAGE_SCN_CNT_INITIALIZED_DATA |
732 COFF::IMAGE_SCN_MEM_READ,
Rafael Espindola6b9998b2015-03-10 22:00:25 +0000[diff] [blame]733 SectionKind::getMetadata(), "skel_loc");
Rafael Espindola6ed58a22015-03-10 21:16:18 +0000[diff] [blame]734 DwarfStrOffDWOSection = Ctx->getCOFFSection(
735 ".debug_str_offsets.dwo",
736 COFF::IMAGE_SCN_MEM_DISCARDABLE | COFF::IMAGE_SCN_CNT_INITIALIZED_DATA |
737 COFF::IMAGE_SCN_MEM_READ,
738 SectionKind::getMetadata());
739 DwarfAddrSection = Ctx->getCOFFSection(
740 ".debug_addr",
741 COFF::IMAGE_SCN_MEM_DISCARDABLE | COFF::IMAGE_SCN_CNT_INITIALIZED_DATA |
742 COFF::IMAGE_SCN_MEM_READ,
Rafael Espindola6b9998b2015-03-10 22:00:25 +0000[diff] [blame]743 SectionKind::getMetadata(), "addr_sec");
David Blaikieb073cb92015-12-02 06:21:34 +0000[diff] [blame]744 DwarfCUIndexSection = Ctx->getCOFFSection(
745 ".debug_cu_index",
746 COFF::IMAGE_SCN_MEM_DISCARDABLE | COFF::IMAGE_SCN_CNT_INITIALIZED_DATA |
747 COFF::IMAGE_SCN_MEM_READ,
748 SectionKind::getMetadata());
David Blaikie24c8ac92015-12-05 03:05:45 +0000[diff] [blame]749 DwarfTUIndexSection = Ctx->getCOFFSection(
750 ".debug_tu_index",
751 COFF::IMAGE_SCN_MEM_DISCARDABLE | COFF::IMAGE_SCN_CNT_INITIALIZED_DATA |
752 COFF::IMAGE_SCN_MEM_READ,
753 SectionKind::getMetadata());
Rafael Espindola6ed58a22015-03-10 21:16:18 +0000[diff] [blame]754 DwarfAccelNamesSection = Ctx->getCOFFSection(
755 ".apple_names",
756 COFF::IMAGE_SCN_MEM_DISCARDABLE | COFF::IMAGE_SCN_CNT_INITIALIZED_DATA |
757 COFF::IMAGE_SCN_MEM_READ,
Rafael Espindola6b9998b2015-03-10 22:00:25 +0000[diff] [blame]758 SectionKind::getMetadata(), "names_begin");
Rafael Espindola6ed58a22015-03-10 21:16:18 +0000[diff] [blame]759 DwarfAccelNamespaceSection = Ctx->getCOFFSection(
760 ".apple_namespaces",
761 COFF::IMAGE_SCN_MEM_DISCARDABLE | COFF::IMAGE_SCN_CNT_INITIALIZED_DATA |
762 COFF::IMAGE_SCN_MEM_READ,
Rafael Espindola6b9998b2015-03-10 22:00:25 +0000[diff] [blame]763 SectionKind::getMetadata(), "namespac_begin");
Rafael Espindola6ed58a22015-03-10 21:16:18 +0000[diff] [blame]764 DwarfAccelTypesSection = Ctx->getCOFFSection(
765 ".apple_types",
766 COFF::IMAGE_SCN_MEM_DISCARDABLE | COFF::IMAGE_SCN_CNT_INITIALIZED_DATA |
767 COFF::IMAGE_SCN_MEM_READ,
Rafael Espindola6b9998b2015-03-10 22:00:25 +0000[diff] [blame]768 SectionKind::getMetadata(), "types_begin");
Rafael Espindola6ed58a22015-03-10 21:16:18 +0000[diff] [blame]769 DwarfAccelObjCSection = Ctx->getCOFFSection(
770 ".apple_objc",
771 COFF::IMAGE_SCN_MEM_DISCARDABLE | COFF::IMAGE_SCN_CNT_INITIALIZED_DATA |
772 COFF::IMAGE_SCN_MEM_READ,
Rafael Espindola6b9998b2015-03-10 22:00:25 +0000[diff] [blame]773 SectionKind::getMetadata(), "objc_begin");
Frederic Riss3f1a0a72014-11-14 20:33:40 +0000[diff] [blame]774
Rafael Espindola6ed58a22015-03-10 21:16:18 +0000[diff] [blame]775 DrectveSection = Ctx->getCOFFSection(
776 ".drectve", COFF::IMAGE_SCN_LNK_INFO | COFF::IMAGE_SCN_LNK_REMOVE,
777 SectionKind::getMetadata());
Evan Cheng76792992011-07-20 05:58:47 +0000[diff] [blame]778
Rafael Espindola6ed58a22015-03-10 21:16:18 +0000[diff] [blame]779 PDataSection = Ctx->getCOFFSection(
780 ".pdata", COFF::IMAGE_SCN_CNT_INITIALIZED_DATA | COFF::IMAGE_SCN_MEM_READ,
Rafael Espindola449711c2015-11-18 06:02:15 +0000[diff] [blame]781 SectionKind::getData());
Evan Cheng76792992011-07-20 05:58:47 +0000[diff] [blame]782
Rafael Espindola6ed58a22015-03-10 21:16:18 +0000[diff] [blame]783 XDataSection = Ctx->getCOFFSection(
784 ".xdata", COFF::IMAGE_SCN_CNT_INITIALIZED_DATA | COFF::IMAGE_SCN_MEM_READ,
Rafael Espindola449711c2015-11-18 06:02:15 +0000[diff] [blame]785 SectionKind::getData());
Saleem Abdulrasoola35f04a2014-06-08 00:34:23 +0000[diff] [blame]786
David Majnemer4eecd302015-05-30 04:56:02 +0000[diff] [blame]787 SXDataSection = Ctx->getCOFFSection(".sxdata", COFF::IMAGE_SCN_LNK_INFO,
788 SectionKind::getMetadata());
789
Rafael Espindola6ed58a22015-03-10 21:16:18 +0000[diff] [blame]790 TLSDataSection = Ctx->getCOFFSection(
791 ".tls$", COFF::IMAGE_SCN_CNT_INITIALIZED_DATA | COFF::IMAGE_SCN_MEM_READ |
792 COFF::IMAGE_SCN_MEM_WRITE,
Rafael Espindola449711c2015-11-18 06:02:15 +0000[diff] [blame]793 SectionKind::getData());
NAKAMURA Takumi0a7d0ad2015-09-22 11:15:07 +0000[diff] [blame]794
Swaroop Sridhare9247ab2015-06-25 00:28:42 +0000[diff] [blame]795 StackMapSection = Ctx->getCOFFSection(".llvm_stackmaps",
796 COFF::IMAGE_SCN_CNT_INITIALIZED_DATA |
797 COFF::IMAGE_SCN_MEM_READ,
NAKAMURA Takumi0a7d0ad2015-09-22 11:15:07 +0000[diff] [blame]798 SectionKind::getReadOnly());
Evan Cheng76792992011-07-20 05:58:47 +0000[diff] [blame]799}
800
Daniel Sanders8d8b13d2015-06-16 12:18:07 +0000[diff] [blame]801void MCObjectFileInfo::InitMCObjectFileInfo(const Triple &TheTriple,
802 Reloc::Model relocm,
Evan Chengbbf3b0d2011-07-20 19:50:42 +0000[diff] [blame]803 CodeModel::Model cm,
Evan Cheng76792992011-07-20 05:58:47 +0000[diff] [blame]804 MCContext &ctx) {
805 RelocM = relocm;
Evan Chengbbf3b0d2011-07-20 19:50:42 +0000[diff] [blame]806 CMModel = cm;
Evan Cheng76792992011-07-20 05:58:47 +0000[diff] [blame]807 Ctx = &ctx;
808
809 // Common.
810 CommDirectiveSupportsAlignment = true;
811 SupportsWeakOmittedEHFrame = true;
Tim Northoverd1c6f512014-03-29 09:03:13 +0000[diff] [blame]812 SupportsCompactUnwindWithoutEHFrame = false;
Tim Northoverf8e47e42015-10-28 22:56:36 +0000[diff] [blame]813 OmitDwarfIfHaveCompactUnwind = false;
Evan Chengbbf3b0d2011-07-20 19:50:42 +0000[diff] [blame]814
Rafael Espindolaaa7851d2014-05-12 13:47:05 +0000[diff] [blame]815 PersonalityEncoding = LSDAEncoding = FDECFIEncoding = TTypeEncoding =
816 dwarf::DW_EH_PE_absptr;
Evan Chengbbf3b0d2011-07-20 19:50:42 +0000[diff] [blame]817
Bill Wendling2d1df6b2013-04-10 21:42:06 +0000[diff] [blame]818 CompactUnwindDwarfEHFrameOnly = 0;
819
Craig Topperbb694de2014-04-13 04:57:38 +0000[diff] [blame]820 EHFrameSection = nullptr; // Created on demand.
821 CompactUnwindSection = nullptr; // Used only by selected targets.
822 DwarfAccelNamesSection = nullptr; // Used only by selected targets.
823 DwarfAccelObjCSection = nullptr; // Used only by selected targets.
824 DwarfAccelNamespaceSection = nullptr; // Used only by selected targets.
825 DwarfAccelTypesSection = nullptr; // Used only by selected targets.
Evan Cheng76792992011-07-20 05:58:47 +0000[diff] [blame]826
Daniel Sanders8d8b13d2015-06-16 12:18:07 +0000[diff] [blame]827 TT = TheTriple;
Saleem Abdulrasoolbdbc0082014-06-22 22:25:01 +0000[diff] [blame]828
David Majnemerff1d0842015-12-22 01:39:04 +0000[diff] [blame]829 switch (TT.getObjectFormat()) {
830 case Triple::MachO:
Rafael Espindoladbaf0492015-08-14 15:48:41 +0000[diff] [blame]831 Env = IsMachO;
Jim Grosbachbb2591f2015-06-04 23:35:03 +0000[diff] [blame]832 initMachOMCObjectFileInfo(TT);
David Majnemerff1d0842015-12-22 01:39:04 +0000[diff] [blame]833 break;
834 case Triple::COFF:
835 if (!TT.isOSWindows())
836 report_fatal_error(
837 "Cannot initialize MC for non-Windows COFF object files.");
838
Rafael Espindoladbaf0492015-08-14 15:48:41 +0000[diff] [blame]839 Env = IsCOFF;
Jim Grosbachbb2591f2015-06-04 23:35:03 +0000[diff] [blame]840 initCOFFMCObjectFileInfo(TT);
David Majnemerff1d0842015-12-22 01:39:04 +0000[diff] [blame]841 break;
842 case Triple::ELF:
Rafael Espindoladbaf0492015-08-14 15:48:41 +0000[diff] [blame]843 Env = IsELF;
Jim Grosbachbb2591f2015-06-04 23:35:03 +0000[diff] [blame]844 initELFMCObjectFileInfo(TT);
David Majnemerff1d0842015-12-22 01:39:04 +0000[diff] [blame]845 break;
846 case Triple::UnknownObjectFormat:
847 report_fatal_error("Cannot initialize MC for unknown object file format.");
848 break;
Evan Cheng76792992011-07-20 05:58:47 +0000[diff] [blame]849 }
850}
851
Daniel Sanders8d8b13d2015-06-16 12:18:07 +0000[diff] [blame]852void MCObjectFileInfo::InitMCObjectFileInfo(StringRef TT, Reloc::Model RM,
853 CodeModel::Model CM,
854 MCContext &ctx) {
855 InitMCObjectFileInfo(Triple(TT), RM, CM, ctx);
856}
857
Rafael Espindola0709a7b2015-05-21 19:20:38 +0000[diff] [blame]858MCSection *MCObjectFileInfo::getDwarfTypesSection(uint64_t Hash) const {
David Blaikiebc563272013-12-13 21:33:40 +0000[diff] [blame]859 return Ctx->getELFSection(".debug_types", ELF::SHT_PROGBITS, ELF::SHF_GROUP,
Rafael Espindolaba31e272015-01-29 17:33:21 +0000[diff] [blame]860 0, utostr(Hash));
David Blaikiebc563272013-12-13 21:33:40 +0000[diff] [blame]861}