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gerrit-public.fairphone.software / toolchain / llvm-project / 12e7b99ed052e5e2104d36c83f343a0dd7864d1d / . / llvm / lib / MC / MCObjectFileInfo.cpp
blob: 8b75457a246024bd812eaa7c2d254b05b4372284 [file] [log] [blame]
Evan Cheng76792992011-07-20 05:58:47 +0000[diff] [blame]1//===-- MObjectFileInfo.cpp - Object File Information ---------------------===//
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.
33 if (T.isWatchOS())
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 Northoverf8e47e42015-10-28 22:56:36 +0000[diff] [blame]61 if (T.isWatchOS())
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;
Timur Iskhodzhanovf166f6c2014-01-30 01:39:17 +0000[diff] [blame]194
Rafael Espindolabecdf632014-06-20 22:37:01 +0000[diff] [blame]195 if (useCompactUnwind(T)) {
Evan Cheng76792992011-07-20 05:58:47 +0000[diff] [blame]196 CompactUnwindSection =
Rafael Espindolabecdf632014-06-20 22:37:01 +0000[diff] [blame]197 Ctx->getMachOSection("__LD", "__compact_unwind", MachO::S_ATTR_DEBUG,
198 SectionKind::getReadOnly());
Evan Cheng76792992011-07-20 05:58:47 +0000[diff] [blame]199
Bill Wendling2d1df6b2013-04-10 21:42:06 +0000[diff] [blame]200 if (T.getArch() == Triple::x86_64 || T.getArch() == Triple::x86)
Tim Northoverf8e47e42015-10-28 22:56:36 +0000[diff] [blame]201 CompactUnwindDwarfEHFrameOnly = 0x04000000; // UNWIND_X86_64_MODE_DWARF
Tim Northovere19bed72014-07-23 12:32:47 +0000[diff] [blame]202 else if (T.getArch() == Triple::aarch64)
Tim Northoverf8e47e42015-10-28 22:56:36 +0000[diff] [blame]203 CompactUnwindDwarfEHFrameOnly = 0x03000000; // UNWIND_ARM64_MODE_DWARF
204 else if (T.getArch() == Triple::arm || T.getArch() == Triple::thumb)
205 CompactUnwindDwarfEHFrameOnly = 0x04000000; // UNWIND_ARM_MODE_DWARF
Bill Wendling2d1df6b2013-04-10 21:42:06 +0000[diff] [blame]206 }
207
Evan Cheng76792992011-07-20 05:58:47 +0000[diff] [blame]208 // Debug Information.
Eric Christopher4996c702011-11-07 09:24:32 +0000[diff] [blame]209 DwarfAccelNamesSection =
Rafael Espindola6ed58a22015-03-10 21:16:18 +0000[diff] [blame]210 Ctx->getMachOSection("__DWARF", "__apple_names", MachO::S_ATTR_DEBUG,
Rafael Espindola6b9998b2015-03-10 22:00:25 +0000[diff] [blame]211 SectionKind::getMetadata(), "names_begin");
Eric Christopher4996c702011-11-07 09:24:32 +0000[diff] [blame]212 DwarfAccelObjCSection =
Rafael Espindola6ed58a22015-03-10 21:16:18 +0000[diff] [blame]213 Ctx->getMachOSection("__DWARF", "__apple_objc", MachO::S_ATTR_DEBUG,
Rafael Espindola6b9998b2015-03-10 22:00:25 +0000[diff] [blame]214 SectionKind::getMetadata(), "objc_begin");
Eric Christopher4996c702011-11-07 09:24:32 +0000[diff] [blame]215 // 16 character section limit...
216 DwarfAccelNamespaceSection =
Rafael Espindola6ed58a22015-03-10 21:16:18 +0000[diff] [blame]217 Ctx->getMachOSection("__DWARF", "__apple_namespac", MachO::S_ATTR_DEBUG,
Rafael Espindola6b9998b2015-03-10 22:00:25 +0000[diff] [blame]218 SectionKind::getMetadata(), "namespac_begin");
Eric Christopher4996c702011-11-07 09:24:32 +0000[diff] [blame]219 DwarfAccelTypesSection =
Rafael Espindola6ed58a22015-03-10 21:16:18 +0000[diff] [blame]220 Ctx->getMachOSection("__DWARF", "__apple_types", MachO::S_ATTR_DEBUG,
Rafael Espindola6b9998b2015-03-10 22:00:25 +0000[diff] [blame]221 SectionKind::getMetadata(), "types_begin");
Jim Grosbachdc1e36e2012-05-11 01:41:30 +0000[diff] [blame]222
Evan Cheng76792992011-07-20 05:58:47 +0000[diff] [blame]223 DwarfAbbrevSection =
Rafael Espindola6ed58a22015-03-10 21:16:18 +0000[diff] [blame]224 Ctx->getMachOSection("__DWARF", "__debug_abbrev", MachO::S_ATTR_DEBUG,
Rafael Espindola6b9998b2015-03-10 22:00:25 +0000[diff] [blame]225 SectionKind::getMetadata(), "section_abbrev");
Evan Cheng76792992011-07-20 05:58:47 +0000[diff] [blame]226 DwarfInfoSection =
Rafael Espindola6ed58a22015-03-10 21:16:18 +0000[diff] [blame]227 Ctx->getMachOSection("__DWARF", "__debug_info", MachO::S_ATTR_DEBUG,
Rafael Espindola6b9998b2015-03-10 22:00:25 +0000[diff] [blame]228 SectionKind::getMetadata(), "section_info");
Evan Cheng76792992011-07-20 05:58:47 +0000[diff] [blame]229 DwarfLineSection =
Rafael Espindola6ed58a22015-03-10 21:16:18 +0000[diff] [blame]230 Ctx->getMachOSection("__DWARF", "__debug_line", MachO::S_ATTR_DEBUG,
Rafael Espindola6b9998b2015-03-10 22:00:25 +0000[diff] [blame]231 SectionKind::getMetadata(), "section_line");
Evan Cheng76792992011-07-20 05:58:47 +0000[diff] [blame]232 DwarfFrameSection =
Rafael Espindola6ed58a22015-03-10 21:16:18 +0000[diff] [blame]233 Ctx->getMachOSection("__DWARF", "__debug_frame", MachO::S_ATTR_DEBUG,
234 SectionKind::getMetadata());
Krzysztof Parzyszek228daa62013-02-12 18:00:14 +0000[diff] [blame]235 DwarfPubNamesSection =
Rafael Espindola6ed58a22015-03-10 21:16:18 +0000[diff] [blame]236 Ctx->getMachOSection("__DWARF", "__debug_pubnames", MachO::S_ATTR_DEBUG,
237 SectionKind::getMetadata());
Evan Cheng76792992011-07-20 05:58:47 +0000[diff] [blame]238 DwarfPubTypesSection =
Rafael Espindola6ed58a22015-03-10 21:16:18 +0000[diff] [blame]239 Ctx->getMachOSection("__DWARF", "__debug_pubtypes", MachO::S_ATTR_DEBUG,
240 SectionKind::getMetadata());
Eric Christopherb0e76942013-09-09 20:03:14 +0000[diff] [blame]241 DwarfGnuPubNamesSection =
Rafael Espindola6ed58a22015-03-10 21:16:18 +0000[diff] [blame]242 Ctx->getMachOSection("__DWARF", "__debug_gnu_pubn", MachO::S_ATTR_DEBUG,
243 SectionKind::getMetadata());
Eric Christopherb0e76942013-09-09 20:03:14 +0000[diff] [blame]244 DwarfGnuPubTypesSection =
Rafael Espindola6ed58a22015-03-10 21:16:18 +0000[diff] [blame]245 Ctx->getMachOSection("__DWARF", "__debug_gnu_pubt", MachO::S_ATTR_DEBUG,
246 SectionKind::getMetadata());
Evan Cheng76792992011-07-20 05:58:47 +0000[diff] [blame]247 DwarfStrSection =
Rafael Espindola6ed58a22015-03-10 21:16:18 +0000[diff] [blame]248 Ctx->getMachOSection("__DWARF", "__debug_str", MachO::S_ATTR_DEBUG,
Rafael Espindola6b9998b2015-03-10 22:00:25 +0000[diff] [blame]249 SectionKind::getMetadata(), "info_string");
Evan Cheng76792992011-07-20 05:58:47 +0000[diff] [blame]250 DwarfLocSection =
Rafael Espindola6ed58a22015-03-10 21:16:18 +0000[diff] [blame]251 Ctx->getMachOSection("__DWARF", "__debug_loc", MachO::S_ATTR_DEBUG,
Rafael Espindola6b9998b2015-03-10 22:00:25 +0000[diff] [blame]252 SectionKind::getMetadata(), "section_debug_loc");
Evan Cheng76792992011-07-20 05:58:47 +0000[diff] [blame]253 DwarfARangesSection =
Rafael Espindola6ed58a22015-03-10 21:16:18 +0000[diff] [blame]254 Ctx->getMachOSection("__DWARF", "__debug_aranges", MachO::S_ATTR_DEBUG,
255 SectionKind::getMetadata());
Evan Cheng76792992011-07-20 05:58:47 +0000[diff] [blame]256 DwarfRangesSection =
Rafael Espindola6ed58a22015-03-10 21:16:18 +0000[diff] [blame]257 Ctx->getMachOSection("__DWARF", "__debug_ranges", MachO::S_ATTR_DEBUG,
Rafael Espindola6b9998b2015-03-10 22:00:25 +0000[diff] [blame]258 SectionKind::getMetadata(), "debug_range");
Evan Cheng76792992011-07-20 05:58:47 +0000[diff] [blame]259 DwarfDebugInlineSection =
Rafael Espindola6ed58a22015-03-10 21:16:18 +0000[diff] [blame]260 Ctx->getMachOSection("__DWARF", "__debug_inlined", MachO::S_ATTR_DEBUG,
261 SectionKind::getMetadata());
262 StackMapSection = Ctx->getMachOSection("__LLVM_STACKMAPS", "__llvm_stackmaps",
263 0, SectionKind::getMetadata());
Evan Cheng76792992011-07-20 05:58:47 +0000[diff] [blame]264
Sanjoy Dasc63244d2015-06-15 18:44:08 +0000[diff] [blame]265 FaultMapSection = Ctx->getMachOSection("__LLVM_FAULTMAPS", "__llvm_faultmaps",
266 0, SectionKind::getMetadata());
267
Evan Cheng76792992011-07-20 05:58:47 +0000[diff] [blame]268 TLSExtraDataSection = TLSTLVSection;
269}
270
Jim Grosbachbb2591f2015-06-04 23:35:03 +0000[diff] [blame]271void MCObjectFileInfo::initELFMCObjectFileInfo(Triple T) {
Joerg Sonnenberger7c442522014-04-30 23:23:14 +0000[diff] [blame]272 switch (T.getArch()) {
273 case Triple::mips:
274 case Triple::mipsel:
Rafael Espindolab9b7ae02013-04-03 03:13:19 +0000[diff] [blame]275 FDECFIEncoding = dwarf::DW_EH_PE_sdata4;
Joerg Sonnenberger7c442522014-04-30 23:23:14 +0000[diff] [blame]276 break;
277 case Triple::mips64:
278 case Triple::mips64el:
Rafael Espindolab9b7ae02013-04-03 03:13:19 +0000[diff] [blame]279 FDECFIEncoding = dwarf::DW_EH_PE_sdata8;
Joerg Sonnenberger7c442522014-04-30 23:23:14 +0000[diff] [blame]280 break;
Rafael Espindolad11591b2014-11-27 17:13:56 +0000[diff] [blame]281 case Triple::x86_64:
282 FDECFIEncoding = dwarf::DW_EH_PE_pcrel |
283 ((CMModel == CodeModel::Large) ? dwarf::DW_EH_PE_sdata8
284 : dwarf::DW_EH_PE_sdata4);
Rafael Espindolad11591b2014-11-27 17:13:56 +0000[diff] [blame]285 break;
Joerg Sonnenberger7c442522014-04-30 23:23:14 +0000[diff] [blame]286 default:
Rafael Espindolaef9d3492013-03-15 05:51:57 +0000[diff] [blame]287 FDECFIEncoding = dwarf::DW_EH_PE_pcrel | dwarf::DW_EH_PE_sdata4;
Joerg Sonnenberger7c442522014-04-30 23:23:14 +0000[diff] [blame]288 break;
289 }
Rafael Espindolaef9d3492013-03-15 05:51:57 +0000[diff] [blame]290
Joerg Sonnenberger7c442522014-04-30 23:23:14 +0000[diff] [blame]291 switch (T.getArch()) {
Joerg Sonnenbergercf86ce12014-05-07 07:49:34 +0000[diff] [blame]292 case Triple::arm:
293 case Triple::armeb:
294 case Triple::thumb:
295 case Triple::thumbeb:
Joerg Sonnenberger94cbb662014-05-13 17:58:13 +0000[diff] [blame]296 if (Ctx->getAsmInfo()->getExceptionHandlingType() == ExceptionHandling::ARM)
297 break;
298 // Fallthrough if not using EHABI
Joerg Sonnenberger6637d4e2014-07-24 19:25:16 +0000[diff] [blame]299 case Triple::ppc:
Joerg Sonnenberger7c442522014-04-30 23:23:14 +0000[diff] [blame]300 case Triple::x86:
Evan Chengbbf3b0d2011-07-20 19:50:42 +0000[diff] [blame]301 PersonalityEncoding = (RelocM == Reloc::PIC_)
Jim Grosbach0dde3492011-11-15 16:46:22 +0000[diff] [blame]302 ? dwarf::DW_EH_PE_indirect | dwarf::DW_EH_PE_pcrel | dwarf::DW_EH_PE_sdata4
303 : dwarf::DW_EH_PE_absptr;
Evan Chengbbf3b0d2011-07-20 19:50:42 +0000[diff] [blame]304 LSDAEncoding = (RelocM == Reloc::PIC_)
305 ? dwarf::DW_EH_PE_pcrel | dwarf::DW_EH_PE_sdata4
306 : dwarf::DW_EH_PE_absptr;
Evan Chengbbf3b0d2011-07-20 19:50:42 +0000[diff] [blame]307 TTypeEncoding = (RelocM == Reloc::PIC_)
Jim Grosbach0dde3492011-11-15 16:46:22 +0000[diff] [blame]308 ? dwarf::DW_EH_PE_indirect | dwarf::DW_EH_PE_pcrel | dwarf::DW_EH_PE_sdata4
309 : dwarf::DW_EH_PE_absptr;
Joerg Sonnenberger7c442522014-04-30 23:23:14 +0000[diff] [blame]310 break;
311 case Triple::x86_64:
Evan Chengbbf3b0d2011-07-20 19:50:42 +0000[diff] [blame]312 if (RelocM == Reloc::PIC_) {
313 PersonalityEncoding = dwarf::DW_EH_PE_indirect | dwarf::DW_EH_PE_pcrel |
314 ((CMModel == CodeModel::Small || CMModel == CodeModel::Medium)
315 ? dwarf::DW_EH_PE_sdata4 : dwarf::DW_EH_PE_sdata8);
316 LSDAEncoding = dwarf::DW_EH_PE_pcrel |
317 (CMModel == CodeModel::Small
318 ? dwarf::DW_EH_PE_sdata4 : dwarf::DW_EH_PE_sdata8);
Evan Chengbbf3b0d2011-07-20 19:50:42 +0000[diff] [blame]319 TTypeEncoding = dwarf::DW_EH_PE_indirect | dwarf::DW_EH_PE_pcrel |
320 ((CMModel == CodeModel::Small || CMModel == CodeModel::Medium)
321 ? dwarf::DW_EH_PE_sdata4 : dwarf::DW_EH_PE_sdata8);
322 } else {
323 PersonalityEncoding =
324 (CMModel == CodeModel::Small || CMModel == CodeModel::Medium)
325 ? dwarf::DW_EH_PE_udata4 : dwarf::DW_EH_PE_absptr;
326 LSDAEncoding = (CMModel == CodeModel::Small)
327 ? dwarf::DW_EH_PE_udata4 : dwarf::DW_EH_PE_absptr;
Evan Chengbbf3b0d2011-07-20 19:50:42 +0000[diff] [blame]328 TTypeEncoding = (CMModel == CodeModel::Small)
329 ? dwarf::DW_EH_PE_udata4 : dwarf::DW_EH_PE_absptr;
330 }
Joerg Sonnenberger7c442522014-04-30 23:23:14 +0000[diff] [blame]331 break;
332 case Triple::aarch64:
333 case Triple::aarch64_be:
Tim Northovere0e3aef2013-01-31 12:12:40 +0000[diff] [blame]334 // The small model guarantees static code/data size < 4GB, but not where it
335 // will be in memory. Most of these could end up >2GB away so even a signed
336 // pc-relative 32-bit address is insufficient, theoretically.
337 if (RelocM == Reloc::PIC_) {
338 PersonalityEncoding = dwarf::DW_EH_PE_indirect | dwarf::DW_EH_PE_pcrel |
339 dwarf::DW_EH_PE_sdata8;
340 LSDAEncoding = dwarf::DW_EH_PE_pcrel | dwarf::DW_EH_PE_sdata8;
Tim Northovere0e3aef2013-01-31 12:12:40 +0000[diff] [blame]341 TTypeEncoding = dwarf::DW_EH_PE_indirect | dwarf::DW_EH_PE_pcrel |
342 dwarf::DW_EH_PE_sdata8;
343 } else {
344 PersonalityEncoding = dwarf::DW_EH_PE_absptr;
345 LSDAEncoding = dwarf::DW_EH_PE_absptr;
Tim Northovere0e3aef2013-01-31 12:12:40 +0000[diff] [blame]346 TTypeEncoding = dwarf::DW_EH_PE_absptr;
347 }
Joerg Sonnenberger7c442522014-04-30 23:23:14 +0000[diff] [blame]348 break;
Logan Chienc0029812014-05-30 16:48:56 +0000[diff] [blame]349 case Triple::mips:
350 case Triple::mipsel:
Petar Jovanovic35f05742014-11-05 22:42:31 +0000[diff] [blame]351 case Triple::mips64:
352 case Triple::mips64el:
Daniel Sandersc95f3f82015-06-02 20:32:50 +0000[diff] [blame]353 // MIPS uses indirect pointer to refer personality functions and types, so
354 // that the eh_frame section can be read-only. DW.ref.personality will be
355 // generated for relocation.
Logan Chienc0029812014-05-30 16:48:56 +0000[diff] [blame]356 PersonalityEncoding = dwarf::DW_EH_PE_indirect;
Daniel Sandersc95f3f82015-06-02 20:32:50 +0000[diff] [blame]357 // FIXME: The N64 ABI probably ought to use DW_EH_PE_sdata8 but we can't
358 // identify N64 from just a triple.
359 TTypeEncoding = dwarf::DW_EH_PE_indirect | dwarf::DW_EH_PE_pcrel |
360 dwarf::DW_EH_PE_sdata4;
361 // We don't support PC-relative LSDA references in GAS so we use the default
362 // DW_EH_PE_absptr for those.
Logan Chienc0029812014-05-30 16:48:56 +0000[diff] [blame]363 break;
Joerg Sonnenberger7c442522014-04-30 23:23:14 +0000[diff] [blame]364 case Triple::ppc64:
365 case Triple::ppc64le:
Adhemerval Zanella1ae22482013-01-09 17:08:15 +0000[diff] [blame]366 PersonalityEncoding = dwarf::DW_EH_PE_indirect | dwarf::DW_EH_PE_pcrel |
367 dwarf::DW_EH_PE_udata8;
Adhemerval Zanella1ae22482013-01-09 17:08:15 +0000[diff] [blame]368 LSDAEncoding = dwarf::DW_EH_PE_pcrel | dwarf::DW_EH_PE_udata8;
Adhemerval Zanella1ae22482013-01-09 17:08:15 +0000[diff] [blame]369 TTypeEncoding = dwarf::DW_EH_PE_indirect | dwarf::DW_EH_PE_pcrel |
370 dwarf::DW_EH_PE_udata8;
Joerg Sonnenberger7c442522014-04-30 23:23:14 +0000[diff] [blame]371 break;
Douglas Katzman9160e782015-04-29 20:30:57 +0000[diff] [blame]372 case Triple::sparcel:
Joerg Sonnenberger7c442522014-04-30 23:23:14 +0000[diff] [blame]373 case Triple::sparc:
Jakob Stoklund Olesen83c67732014-01-28 02:52:26 +0000[diff] [blame]374 if (RelocM == Reloc::PIC_) {
375 LSDAEncoding = dwarf::DW_EH_PE_pcrel | dwarf::DW_EH_PE_sdata4;
376 PersonalityEncoding = dwarf::DW_EH_PE_indirect | dwarf::DW_EH_PE_pcrel |
377 dwarf::DW_EH_PE_sdata4;
Jakob Stoklund Olesen83c67732014-01-28 02:52:26 +0000[diff] [blame]378 TTypeEncoding = dwarf::DW_EH_PE_indirect | dwarf::DW_EH_PE_pcrel |
379 dwarf::DW_EH_PE_sdata4;
380 } else {
381 LSDAEncoding = dwarf::DW_EH_PE_absptr;
382 PersonalityEncoding = dwarf::DW_EH_PE_absptr;
Jakob Stoklund Olesen83c67732014-01-28 02:52:26 +0000[diff] [blame]383 TTypeEncoding = dwarf::DW_EH_PE_absptr;
384 }
Joerg Sonnenbergerfa9cf652014-04-30 23:36:24 +0000[diff] [blame]385 break;
Joerg Sonnenberger7c442522014-04-30 23:23:14 +0000[diff] [blame]386 case Triple::sparcv9:
Jakob Stoklund Olesen83c67732014-01-28 02:52:26 +0000[diff] [blame]387 LSDAEncoding = dwarf::DW_EH_PE_pcrel | dwarf::DW_EH_PE_sdata4;
388 if (RelocM == Reloc::PIC_) {
389 PersonalityEncoding = dwarf::DW_EH_PE_indirect | dwarf::DW_EH_PE_pcrel |
390 dwarf::DW_EH_PE_sdata4;
Jakob Stoklund Olesen83c67732014-01-28 02:52:26 +0000[diff] [blame]391 TTypeEncoding = dwarf::DW_EH_PE_indirect | dwarf::DW_EH_PE_pcrel |
392 dwarf::DW_EH_PE_sdata4;
393 } else {
394 PersonalityEncoding = dwarf::DW_EH_PE_absptr;
Jakob Stoklund Olesen83c67732014-01-28 02:52:26 +0000[diff] [blame]395 TTypeEncoding = dwarf::DW_EH_PE_absptr;
396 }
Joerg Sonnenbergerfa9cf652014-04-30 23:36:24 +0000[diff] [blame]397 break;
Joerg Sonnenberger7c442522014-04-30 23:23:14 +0000[diff] [blame]398 case Triple::systemz:
Ulrich Weigand0213e7f2013-05-06 16:11:12 +0000[diff] [blame]399 // All currently-defined code models guarantee that 4-byte PC-relative
400 // values will be in range.
Ulrich Weigande7c6dfe2013-05-06 17:28:30 +0000[diff] [blame]401 if (RelocM == Reloc::PIC_) {
402 PersonalityEncoding = dwarf::DW_EH_PE_indirect | dwarf::DW_EH_PE_pcrel |
403 dwarf::DW_EH_PE_sdata4;
404 LSDAEncoding = dwarf::DW_EH_PE_pcrel | dwarf::DW_EH_PE_sdata4;
Ulrich Weigande7c6dfe2013-05-06 17:28:30 +0000[diff] [blame]405 TTypeEncoding = dwarf::DW_EH_PE_indirect | dwarf::DW_EH_PE_pcrel |
406 dwarf::DW_EH_PE_sdata4;
407 } else {
408 PersonalityEncoding = dwarf::DW_EH_PE_absptr;
409 LSDAEncoding = dwarf::DW_EH_PE_absptr;
Ulrich Weigande7c6dfe2013-05-06 17:28:30 +0000[diff] [blame]410 TTypeEncoding = dwarf::DW_EH_PE_absptr;
411 }
Joerg Sonnenbergerfa9cf652014-04-30 23:36:24 +0000[diff] [blame]412 break;
Joerg Sonnenberger7c442522014-04-30 23:23:14 +0000[diff] [blame]413 default:
414 break;
Evan Chengbbf3b0d2011-07-20 19:50:42 +0000[diff] [blame]415 }
416
Rafael Espindola889d7bb2015-11-06 15:30:45 +0000[diff] [blame]417 unsigned EHSectionType = T.getArch() == Triple::x86_64
418 ? ELF::SHT_X86_64_UNWIND
419 : ELF::SHT_PROGBITS;
Rafael Espindolab20b7062015-11-06 13:35:35 +0000[diff] [blame]420
David Chisnall07f8d3e2012-02-17 17:31:15 +0000[diff] [blame]421 // Solaris requires different flags for .eh_frame to seemingly every other
422 // platform.
Rafael Espindola889d7bb2015-11-06 15:30:45 +0000[diff] [blame]423 unsigned EHSectionFlags = ELF::SHF_ALLOC;
Rafael Espindolab20b7062015-11-06 13:35:35 +0000[diff] [blame]424 if (T.isOSSolaris() && T.getArch() != Triple::x86_64)
425 EHSectionFlags |= ELF::SHF_WRITE;
David Chisnall07f8d3e2012-02-17 17:31:15 +0000[diff] [blame]426
Evan Cheng76792992011-07-20 05:58:47 +0000[diff] [blame]427 // ELF
Rafael Espindolaba31e272015-01-29 17:33:21 +0000[diff] [blame]428 BSSSection = Ctx->getELFSection(".bss", ELF::SHT_NOBITS,
429 ELF::SHF_WRITE | ELF::SHF_ALLOC);
Evan Cheng76792992011-07-20 05:58:47 +0000[diff] [blame]430
Rafael Espindolaba31e272015-01-29 17:33:21 +0000[diff] [blame]431 TextSection = Ctx->getELFSection(".text", ELF::SHT_PROGBITS,
432 ELF::SHF_EXECINSTR | ELF::SHF_ALLOC);
Evan Cheng76792992011-07-20 05:58:47 +0000[diff] [blame]433
Rafael Espindolaba31e272015-01-29 17:33:21 +0000[diff] [blame]434 DataSection = Ctx->getELFSection(".data", ELF::SHT_PROGBITS,
435 ELF::SHF_WRITE | ELF::SHF_ALLOC);
Evan Cheng76792992011-07-20 05:58:47 +0000[diff] [blame]436
437 ReadOnlySection =
Rafael Espindolaba31e272015-01-29 17:33:21 +0000[diff] [blame]438 Ctx->getELFSection(".rodata", ELF::SHT_PROGBITS, ELF::SHF_ALLOC);
Evan Cheng76792992011-07-20 05:58:47 +0000[diff] [blame]439
440 TLSDataSection =
Rafael Espindolaba31e272015-01-29 17:33:21 +0000[diff] [blame]441 Ctx->getELFSection(".tdata", ELF::SHT_PROGBITS,
442 ELF::SHF_ALLOC | ELF::SHF_TLS | ELF::SHF_WRITE);
Evan Cheng76792992011-07-20 05:58:47 +0000[diff] [blame]443
Rafael Espindolaba31e272015-01-29 17:33:21 +0000[diff] [blame]444 TLSBSSSection = Ctx->getELFSection(
445 ".tbss", ELF::SHT_NOBITS, ELF::SHF_ALLOC | ELF::SHF_TLS | ELF::SHF_WRITE);
Evan Cheng76792992011-07-20 05:58:47 +0000[diff] [blame]446
Rafael Espindolaba31e272015-01-29 17:33:21 +0000[diff] [blame]447 DataRelROSection = Ctx->getELFSection(".data.rel.ro", ELF::SHT_PROGBITS,
448 ELF::SHF_ALLOC | ELF::SHF_WRITE);
Evan Cheng76792992011-07-20 05:58:47 +0000[diff] [blame]449
Evan Cheng76792992011-07-20 05:58:47 +0000[diff] [blame]450 MergeableConst4Section =
Rafael Espindolaba31e272015-01-29 17:33:21 +0000[diff] [blame]451 Ctx->getELFSection(".rodata.cst4", ELF::SHT_PROGBITS,
452 ELF::SHF_ALLOC | ELF::SHF_MERGE, 4, "");
Evan Cheng76792992011-07-20 05:58:47 +0000[diff] [blame]453
454 MergeableConst8Section =
Rafael Espindolaba31e272015-01-29 17:33:21 +0000[diff] [blame]455 Ctx->getELFSection(".rodata.cst8", ELF::SHT_PROGBITS,
456 ELF::SHF_ALLOC | ELF::SHF_MERGE, 8, "");
Evan Cheng76792992011-07-20 05:58:47 +0000[diff] [blame]457
458 MergeableConst16Section =
Rafael Espindolaba31e272015-01-29 17:33:21 +0000[diff] [blame]459 Ctx->getELFSection(".rodata.cst16", ELF::SHT_PROGBITS,
460 ELF::SHF_ALLOC | ELF::SHF_MERGE, 16, "");
Evan Cheng76792992011-07-20 05:58:47 +0000[diff] [blame]461
Rafael Espindolaba31e272015-01-29 17:33:21 +0000[diff] [blame]462 StaticCtorSection = Ctx->getELFSection(".ctors", ELF::SHT_PROGBITS,
463 ELF::SHF_ALLOC | ELF::SHF_WRITE);
Evan Cheng76792992011-07-20 05:58:47 +0000[diff] [blame]464
Rafael Espindolaba31e272015-01-29 17:33:21 +0000[diff] [blame]465 StaticDtorSection = Ctx->getELFSection(".dtors", ELF::SHT_PROGBITS,
466 ELF::SHF_ALLOC | ELF::SHF_WRITE);
Evan Cheng76792992011-07-20 05:58:47 +0000[diff] [blame]467
468 // Exception Handling Sections.
469
470 // FIXME: We're emitting LSDA info into a readonly section on ELF, even though
471 // it contains relocatable pointers. In PIC mode, this is probably a big
472 // runtime hit for C++ apps. Either the contents of the LSDA need to be
473 // adjusted or this should be a data section.
Rafael Espindolaba31e272015-01-29 17:33:21 +0000[diff] [blame]474 LSDASection = Ctx->getELFSection(".gcc_except_table", ELF::SHT_PROGBITS,
475 ELF::SHF_ALLOC);
Evan Cheng76792992011-07-20 05:58:47 +0000[diff] [blame]476
Craig Topperbb694de2014-04-13 04:57:38 +0000[diff] [blame]477 COFFDebugSymbolsSection = nullptr;
Timur Iskhodzhanovf166f6c2014-01-30 01:39:17 +0000[diff] [blame]478
Evan Cheng76792992011-07-20 05:58:47 +0000[diff] [blame]479 // Debug Info Sections.
Rafael Espindola6b9998b2015-03-10 22:00:25 +0000[diff] [blame]480 DwarfAbbrevSection = Ctx->getELFSection(".debug_abbrev", ELF::SHT_PROGBITS, 0,
481 "section_abbrev");
482 DwarfInfoSection =
483 Ctx->getELFSection(".debug_info", ELF::SHT_PROGBITS, 0, "section_info");
Rafael Espindola23562fc2015-03-11 04:20:31 +0000[diff] [blame]484 DwarfLineSection = Ctx->getELFSection(".debug_line", ELF::SHT_PROGBITS, 0);
Rafael Espindolaba31e272015-01-29 17:33:21 +0000[diff] [blame]485 DwarfFrameSection = Ctx->getELFSection(".debug_frame", ELF::SHT_PROGBITS, 0);
Krzysztof Parzyszek228daa62013-02-12 18:00:14 +0000[diff] [blame]486 DwarfPubNamesSection =
Rafael Espindolaba31e272015-01-29 17:33:21 +0000[diff] [blame]487 Ctx->getELFSection(".debug_pubnames", ELF::SHT_PROGBITS, 0);
Evan Cheng76792992011-07-20 05:58:47 +0000[diff] [blame]488 DwarfPubTypesSection =
Rafael Espindolaba31e272015-01-29 17:33:21 +0000[diff] [blame]489 Ctx->getELFSection(".debug_pubtypes", ELF::SHT_PROGBITS, 0);
Eric Christopherb0e76942013-09-09 20:03:14 +0000[diff] [blame]490 DwarfGnuPubNamesSection =
Rafael Espindolaba31e272015-01-29 17:33:21 +0000[diff] [blame]491 Ctx->getELFSection(".debug_gnu_pubnames", ELF::SHT_PROGBITS, 0);
Eric Christopherb0e76942013-09-09 20:03:14 +0000[diff] [blame]492 DwarfGnuPubTypesSection =
Rafael Espindolaba31e272015-01-29 17:33:21 +0000[diff] [blame]493 Ctx->getELFSection(".debug_gnu_pubtypes", ELF::SHT_PROGBITS, 0);
Rafael Espindola23562fc2015-03-11 04:20:31 +0000[diff] [blame]494 DwarfStrSection =
495 Ctx->getELFSection(".debug_str", ELF::SHT_PROGBITS,
496 ELF::SHF_MERGE | ELF::SHF_STRINGS, 1, "");
497 DwarfLocSection = Ctx->getELFSection(".debug_loc", ELF::SHT_PROGBITS, 0);
Evan Cheng76792992011-07-20 05:58:47 +0000[diff] [blame]498 DwarfARangesSection =
Rafael Espindolaba31e272015-01-29 17:33:21 +0000[diff] [blame]499 Ctx->getELFSection(".debug_aranges", ELF::SHT_PROGBITS, 0);
Evan Cheng76792992011-07-20 05:58:47 +0000[diff] [blame]500 DwarfRangesSection =
Rafael Espindola6b9998b2015-03-10 22:00:25 +0000[diff] [blame]501 Ctx->getELFSection(".debug_ranges", ELF::SHT_PROGBITS, 0, "debug_range");
Eric Christopher27ed8ec2012-11-28 02:49:34 +0000[diff] [blame]502
503 // DWARF5 Experimental Debug Info
504
505 // Accelerator Tables
Eric Christophera0ad67d2012-10-08 21:41:30 +0000[diff] [blame]506 DwarfAccelNamesSection =
Rafael Espindola6b9998b2015-03-10 22:00:25 +0000[diff] [blame]507 Ctx->getELFSection(".apple_names", ELF::SHT_PROGBITS, 0, "names_begin");
Eric Christophera0ad67d2012-10-08 21:41:30 +0000[diff] [blame]508 DwarfAccelObjCSection =
Rafael Espindola6b9998b2015-03-10 22:00:25 +0000[diff] [blame]509 Ctx->getELFSection(".apple_objc", ELF::SHT_PROGBITS, 0, "objc_begin");
510 DwarfAccelNamespaceSection = Ctx->getELFSection(
511 ".apple_namespaces", ELF::SHT_PROGBITS, 0, "namespac_begin");
Eric Christophera0ad67d2012-10-08 21:41:30 +0000[diff] [blame]512 DwarfAccelTypesSection =
Rafael Espindola6b9998b2015-03-10 22:00:25 +0000[diff] [blame]513 Ctx->getELFSection(".apple_types", ELF::SHT_PROGBITS, 0, "types_begin");
Eric Christopherc3b434b2012-11-28 02:49:38 +0000[diff] [blame]514
515 // Fission Sections
Rafael Espindola23562fc2015-03-11 04:20:31 +0000[diff] [blame]516 DwarfInfoDWOSection =
517 Ctx->getELFSection(".debug_info.dwo", ELF::SHT_PROGBITS, 0);
518 DwarfTypesDWOSection =
519 Ctx->getELFSection(".debug_types.dwo", ELF::SHT_PROGBITS, 0);
520 DwarfAbbrevDWOSection =
521 Ctx->getELFSection(".debug_abbrev.dwo", ELF::SHT_PROGBITS, 0);
522 DwarfStrDWOSection =
523 Ctx->getELFSection(".debug_str.dwo", ELF::SHT_PROGBITS,
524 ELF::SHF_MERGE | ELF::SHF_STRINGS, 1, "");
Eric Christopher3c230092012-11-30 06:47:06 +0000[diff] [blame]525 DwarfLineDWOSection =
Rafael Espindolaba31e272015-01-29 17:33:21 +0000[diff] [blame]526 Ctx->getELFSection(".debug_line.dwo", ELF::SHT_PROGBITS, 0);
Eric Christopher3c230092012-11-30 06:47:06 +0000[diff] [blame]527 DwarfLocDWOSection =
Rafael Espindola6b9998b2015-03-10 22:00:25 +0000[diff] [blame]528 Ctx->getELFSection(".debug_loc.dwo", ELF::SHT_PROGBITS, 0, "skel_loc");
Eric Christopherc0fa8672013-01-04 17:59:22 +0000[diff] [blame]529 DwarfStrOffDWOSection =
Rafael Espindolaba31e272015-01-29 17:33:21 +0000[diff] [blame]530 Ctx->getELFSection(".debug_str_offsets.dwo", ELF::SHT_PROGBITS, 0);
Rafael Espindola6b9998b2015-03-10 22:00:25 +0000[diff] [blame]531 DwarfAddrSection =
532 Ctx->getELFSection(".debug_addr", ELF::SHT_PROGBITS, 0, "addr_sec");
Philip Reames76846182014-08-01 18:47:09 +0000[diff] [blame]533
534 StackMapSection =
Rafael Espindolaba31e272015-01-29 17:33:21 +0000[diff] [blame]535 Ctx->getELFSection(".llvm_stackmaps", ELF::SHT_PROGBITS, ELF::SHF_ALLOC);
Sanjoy Dasc63244d2015-06-15 18:44:08 +0000[diff] [blame]536
537 FaultMapSection =
538 Ctx->getELFSection(".llvm_faultmaps", ELF::SHT_PROGBITS, ELF::SHF_ALLOC);
Rafael Espindola889d7bb2015-11-06 15:30:45 +0000[diff] [blame]539
540 EHFrameSection =
541 Ctx->getELFSection(".eh_frame", EHSectionType, EHSectionFlags);
Evan Cheng76792992011-07-20 05:58:47 +0000[diff] [blame]542}
543
Jim Grosbachbb2591f2015-06-04 23:35:03 +0000[diff] [blame]544void MCObjectFileInfo::initCOFFMCObjectFileInfo(Triple T) {
Rafael Espindola889d7bb2015-11-06 15:30:45 +0000[diff] [blame]545 EHFrameSection = Ctx->getCOFFSection(
546 ".eh_frame", COFF::IMAGE_SCN_CNT_INITIALIZED_DATA |
547 COFF::IMAGE_SCN_MEM_READ | COFF::IMAGE_SCN_MEM_WRITE,
Rafael Espindola449711c2015-11-18 06:02:15 +0000[diff] [blame]548 SectionKind::getData());
Rafael Espindola889d7bb2015-11-06 15:30:45 +0000[diff] [blame]549
Saleem Abdulrasool70a02062014-06-08 03:57:49 +0000[diff] [blame]550 bool IsWoA = T.getArch() == Triple::arm || T.getArch() == Triple::thumb;
551
David Majnemer48227a32014-09-21 09:18:07 +0000[diff] [blame]552 CommDirectiveSupportsAlignment = true;
David Majnemera9bdb322014-04-08 22:33:40 +0000[diff] [blame]553
Evan Cheng76792992011-07-20 05:58:47 +0000[diff] [blame]554 // COFF
Rafael Espindola6ed58a22015-03-10 21:16:18 +0000[diff] [blame]555 BSSSection = Ctx->getCOFFSection(
556 ".bss", COFF::IMAGE_SCN_CNT_UNINITIALIZED_DATA |
557 COFF::IMAGE_SCN_MEM_READ | COFF::IMAGE_SCN_MEM_WRITE,
558 SectionKind::getBSS());
559 TextSection = Ctx->getCOFFSection(
560 ".text",
561 (IsWoA ? COFF::IMAGE_SCN_MEM_16BIT : (COFF::SectionCharacteristics)0) |
562 COFF::IMAGE_SCN_CNT_CODE | COFF::IMAGE_SCN_MEM_EXECUTE |
563 COFF::IMAGE_SCN_MEM_READ,
564 SectionKind::getText());
565 DataSection = Ctx->getCOFFSection(
566 ".data", COFF::IMAGE_SCN_CNT_INITIALIZED_DATA | COFF::IMAGE_SCN_MEM_READ |
567 COFF::IMAGE_SCN_MEM_WRITE,
Rafael Espindola449711c2015-11-18 06:02:15 +0000[diff] [blame]568 SectionKind::getData());
Rafael Espindola6ed58a22015-03-10 21:16:18 +0000[diff] [blame]569 ReadOnlySection = Ctx->getCOFFSection(
570 ".rdata", COFF::IMAGE_SCN_CNT_INITIALIZED_DATA | COFF::IMAGE_SCN_MEM_READ,
571 SectionKind::getReadOnly());
Saleem Abdulrasoola35f04a2014-06-08 00:34:23 +0000[diff] [blame]572
Saleem Abdulrasooled7fc4b2014-06-08 00:34:27 +0000[diff] [blame]573 if (T.isKnownWindowsMSVCEnvironment() || T.isWindowsItaniumEnvironment()) {
Michael J. Spencerb560d072012-02-23 21:56:08 +0000[diff] [blame]574 StaticCtorSection =
Rafael Espindola6ed58a22015-03-10 21:16:18 +0000[diff] [blame]575 Ctx->getCOFFSection(".CRT$XCU", COFF::IMAGE_SCN_CNT_INITIALIZED_DATA |
576 COFF::IMAGE_SCN_MEM_READ,
577 SectionKind::getReadOnly());
Saleem Abdulrasoola35f04a2014-06-08 00:34:23 +0000[diff] [blame]578 StaticDtorSection =
Rafael Espindola6ed58a22015-03-10 21:16:18 +0000[diff] [blame]579 Ctx->getCOFFSection(".CRT$XTX", COFF::IMAGE_SCN_CNT_INITIALIZED_DATA |
580 COFF::IMAGE_SCN_MEM_READ,
581 SectionKind::getReadOnly());
Michael J. Spencerb560d072012-02-23 21:56:08 +0000[diff] [blame]582 } else {
Rafael Espindola6ed58a22015-03-10 21:16:18 +0000[diff] [blame]583 StaticCtorSection = Ctx->getCOFFSection(
584 ".ctors", COFF::IMAGE_SCN_CNT_INITIALIZED_DATA |
585 COFF::IMAGE_SCN_MEM_READ | COFF::IMAGE_SCN_MEM_WRITE,
Rafael Espindola449711c2015-11-18 06:02:15 +0000[diff] [blame]586 SectionKind::getData());
Rafael Espindola6ed58a22015-03-10 21:16:18 +0000[diff] [blame]587 StaticDtorSection = Ctx->getCOFFSection(
588 ".dtors", COFF::IMAGE_SCN_CNT_INITIALIZED_DATA |
589 COFF::IMAGE_SCN_MEM_READ | COFF::IMAGE_SCN_MEM_WRITE,
Rafael Espindola449711c2015-11-18 06:02:15 +0000[diff] [blame]590 SectionKind::getData());
Anton Korobeynikov37d73002012-09-23 15:53:47 +0000[diff] [blame]591 }
Evan Cheng76792992011-07-20 05:58:47 +0000[diff] [blame]592
593 // FIXME: We're emitting LSDA info into a readonly section on COFF, even
594 // though it contains relocatable pointers. In PIC mode, this is probably a
595 // big runtime hit for C++ apps. Either the contents of the LSDA need to be
596 // adjusted or this should be a data section.
NAKAMURA Takumi1db59952014-06-25 12:41:52 +0000[diff] [blame]597 assert(T.isOSWindows() && "Windows is the only supported COFF target");
598 if (T.getArch() == Triple::x86_64) {
599 // On Windows 64 with SEH, the LSDA is emitted into the .xdata section
Hans Wennborg083ca9b2015-10-06 23:24:35 +0000[diff] [blame]600 LSDASection = nullptr;
NAKAMURA Takumi1db59952014-06-25 12:41:52 +0000[diff] [blame]601 } else {
602 LSDASection = Ctx->getCOFFSection(".gcc_except_table",
603 COFF::IMAGE_SCN_CNT_INITIALIZED_DATA |
604 COFF::IMAGE_SCN_MEM_READ,
605 SectionKind::getReadOnly());
606 }
Evan Cheng76792992011-07-20 05:58:47 +0000[diff] [blame]607
608 // Debug info.
Timur Iskhodzhanov31377c52014-01-28 03:48:44 +0000[diff] [blame]609 COFFDebugSymbolsSection =
Rafael Espindola6ed58a22015-03-10 21:16:18 +0000[diff] [blame]610 Ctx->getCOFFSection(".debug$S", COFF::IMAGE_SCN_MEM_DISCARDABLE |
611 COFF::IMAGE_SCN_CNT_INITIALIZED_DATA |
612 COFF::IMAGE_SCN_MEM_READ,
613 SectionKind::getMetadata());
Timur Iskhodzhanov31377c52014-01-28 03:48:44 +0000[diff] [blame]614
Rafael Espindola6ed58a22015-03-10 21:16:18 +0000[diff] [blame]615 DwarfAbbrevSection = Ctx->getCOFFSection(
616 ".debug_abbrev",
617 COFF::IMAGE_SCN_MEM_DISCARDABLE | COFF::IMAGE_SCN_CNT_INITIALIZED_DATA |
618 COFF::IMAGE_SCN_MEM_READ,
Rafael Espindola6b9998b2015-03-10 22:00:25 +0000[diff] [blame]619 SectionKind::getMetadata(), "section_abbrev");
Rafael Espindola6ed58a22015-03-10 21:16:18 +0000[diff] [blame]620 DwarfInfoSection = Ctx->getCOFFSection(
621 ".debug_info",
622 COFF::IMAGE_SCN_MEM_DISCARDABLE | COFF::IMAGE_SCN_CNT_INITIALIZED_DATA |
623 COFF::IMAGE_SCN_MEM_READ,
Rafael Espindola6b9998b2015-03-10 22:00:25 +0000[diff] [blame]624 SectionKind::getMetadata(), "section_info");
Rafael Espindola6ed58a22015-03-10 21:16:18 +0000[diff] [blame]625 DwarfLineSection = Ctx->getCOFFSection(
626 ".debug_line",
627 COFF::IMAGE_SCN_MEM_DISCARDABLE | COFF::IMAGE_SCN_CNT_INITIALIZED_DATA |
628 COFF::IMAGE_SCN_MEM_READ,
Rafael Espindola6b9998b2015-03-10 22:00:25 +0000[diff] [blame]629 SectionKind::getMetadata(), "section_line");
630
Rafael Espindola6ed58a22015-03-10 21:16:18 +0000[diff] [blame]631 DwarfFrameSection = Ctx->getCOFFSection(
632 ".debug_frame",
633 COFF::IMAGE_SCN_MEM_DISCARDABLE | COFF::IMAGE_SCN_CNT_INITIALIZED_DATA |
634 COFF::IMAGE_SCN_MEM_READ,
635 SectionKind::getMetadata());
636 DwarfPubNamesSection = Ctx->getCOFFSection(
637 ".debug_pubnames",
638 COFF::IMAGE_SCN_MEM_DISCARDABLE | COFF::IMAGE_SCN_CNT_INITIALIZED_DATA |
639 COFF::IMAGE_SCN_MEM_READ,
640 SectionKind::getMetadata());
641 DwarfPubTypesSection = Ctx->getCOFFSection(
642 ".debug_pubtypes",
643 COFF::IMAGE_SCN_MEM_DISCARDABLE | COFF::IMAGE_SCN_CNT_INITIALIZED_DATA |
644 COFF::IMAGE_SCN_MEM_READ,
645 SectionKind::getMetadata());
646 DwarfGnuPubNamesSection = Ctx->getCOFFSection(
647 ".debug_gnu_pubnames",
648 COFF::IMAGE_SCN_MEM_DISCARDABLE | COFF::IMAGE_SCN_CNT_INITIALIZED_DATA |
649 COFF::IMAGE_SCN_MEM_READ,
650 SectionKind::getMetadata());
651 DwarfGnuPubTypesSection = Ctx->getCOFFSection(
652 ".debug_gnu_pubtypes",
653 COFF::IMAGE_SCN_MEM_DISCARDABLE | COFF::IMAGE_SCN_CNT_INITIALIZED_DATA |
654 COFF::IMAGE_SCN_MEM_READ,
655 SectionKind::getMetadata());
656 DwarfStrSection = Ctx->getCOFFSection(
657 ".debug_str",
658 COFF::IMAGE_SCN_MEM_DISCARDABLE | COFF::IMAGE_SCN_CNT_INITIALIZED_DATA |
659 COFF::IMAGE_SCN_MEM_READ,
Rafael Espindola6b9998b2015-03-10 22:00:25 +0000[diff] [blame]660 SectionKind::getMetadata(), "info_string");
Rafael Espindola6ed58a22015-03-10 21:16:18 +0000[diff] [blame]661 DwarfLocSection = Ctx->getCOFFSection(
662 ".debug_loc",
663 COFF::IMAGE_SCN_MEM_DISCARDABLE | COFF::IMAGE_SCN_CNT_INITIALIZED_DATA |
664 COFF::IMAGE_SCN_MEM_READ,
Rafael Espindola6b9998b2015-03-10 22:00:25 +0000[diff] [blame]665 SectionKind::getMetadata(), "section_debug_loc");
Rafael Espindola6ed58a22015-03-10 21:16:18 +0000[diff] [blame]666 DwarfARangesSection = Ctx->getCOFFSection(
667 ".debug_aranges",
668 COFF::IMAGE_SCN_MEM_DISCARDABLE | COFF::IMAGE_SCN_CNT_INITIALIZED_DATA |
669 COFF::IMAGE_SCN_MEM_READ,
670 SectionKind::getMetadata());
671 DwarfRangesSection = Ctx->getCOFFSection(
672 ".debug_ranges",
673 COFF::IMAGE_SCN_MEM_DISCARDABLE | COFF::IMAGE_SCN_CNT_INITIALIZED_DATA |
674 COFF::IMAGE_SCN_MEM_READ,
Rafael Espindola6b9998b2015-03-10 22:00:25 +0000[diff] [blame]675 SectionKind::getMetadata(), "debug_range");
Rafael Espindola6ed58a22015-03-10 21:16:18 +0000[diff] [blame]676 DwarfInfoDWOSection = Ctx->getCOFFSection(
677 ".debug_info.dwo",
678 COFF::IMAGE_SCN_MEM_DISCARDABLE | COFF::IMAGE_SCN_CNT_INITIALIZED_DATA |
679 COFF::IMAGE_SCN_MEM_READ,
Rafael Espindola6b9998b2015-03-10 22:00:25 +0000[diff] [blame]680 SectionKind::getMetadata(), "section_info_dwo");
Rafael Espindola6ed58a22015-03-10 21:16:18 +0000[diff] [blame]681 DwarfTypesDWOSection = Ctx->getCOFFSection(
682 ".debug_types.dwo",
683 COFF::IMAGE_SCN_MEM_DISCARDABLE | COFF::IMAGE_SCN_CNT_INITIALIZED_DATA |
684 COFF::IMAGE_SCN_MEM_READ,
Rafael Espindolab03bc792015-03-10 23:06:32 +0000[diff] [blame]685 SectionKind::getMetadata(), "section_types_dwo");
Rafael Espindola6ed58a22015-03-10 21:16:18 +0000[diff] [blame]686 DwarfAbbrevDWOSection = Ctx->getCOFFSection(
687 ".debug_abbrev.dwo",
688 COFF::IMAGE_SCN_MEM_DISCARDABLE | COFF::IMAGE_SCN_CNT_INITIALIZED_DATA |
689 COFF::IMAGE_SCN_MEM_READ,
Rafael Espindola6b9998b2015-03-10 22:00:25 +0000[diff] [blame]690 SectionKind::getMetadata(), "section_abbrev_dwo");
Rafael Espindola6ed58a22015-03-10 21:16:18 +0000[diff] [blame]691 DwarfStrDWOSection = Ctx->getCOFFSection(
692 ".debug_str.dwo",
693 COFF::IMAGE_SCN_MEM_DISCARDABLE | COFF::IMAGE_SCN_CNT_INITIALIZED_DATA |
694 COFF::IMAGE_SCN_MEM_READ,
Rafael Espindola6b9998b2015-03-10 22:00:25 +0000[diff] [blame]695 SectionKind::getMetadata(), "skel_string");
Rafael Espindola6ed58a22015-03-10 21:16:18 +0000[diff] [blame]696 DwarfLineDWOSection = Ctx->getCOFFSection(
697 ".debug_line.dwo",
698 COFF::IMAGE_SCN_MEM_DISCARDABLE | COFF::IMAGE_SCN_CNT_INITIALIZED_DATA |
699 COFF::IMAGE_SCN_MEM_READ,
700 SectionKind::getMetadata());
701 DwarfLocDWOSection = Ctx->getCOFFSection(
702 ".debug_loc.dwo",
703 COFF::IMAGE_SCN_MEM_DISCARDABLE | COFF::IMAGE_SCN_CNT_INITIALIZED_DATA |
704 COFF::IMAGE_SCN_MEM_READ,
Rafael Espindola6b9998b2015-03-10 22:00:25 +0000[diff] [blame]705 SectionKind::getMetadata(), "skel_loc");
Rafael Espindola6ed58a22015-03-10 21:16:18 +0000[diff] [blame]706 DwarfStrOffDWOSection = Ctx->getCOFFSection(
707 ".debug_str_offsets.dwo",
708 COFF::IMAGE_SCN_MEM_DISCARDABLE | COFF::IMAGE_SCN_CNT_INITIALIZED_DATA |
709 COFF::IMAGE_SCN_MEM_READ,
710 SectionKind::getMetadata());
711 DwarfAddrSection = Ctx->getCOFFSection(
712 ".debug_addr",
713 COFF::IMAGE_SCN_MEM_DISCARDABLE | COFF::IMAGE_SCN_CNT_INITIALIZED_DATA |
714 COFF::IMAGE_SCN_MEM_READ,
Rafael Espindola6b9998b2015-03-10 22:00:25 +0000[diff] [blame]715 SectionKind::getMetadata(), "addr_sec");
Rafael Espindola6ed58a22015-03-10 21:16:18 +0000[diff] [blame]716 DwarfAccelNamesSection = Ctx->getCOFFSection(
717 ".apple_names",
718 COFF::IMAGE_SCN_MEM_DISCARDABLE | COFF::IMAGE_SCN_CNT_INITIALIZED_DATA |
719 COFF::IMAGE_SCN_MEM_READ,
Rafael Espindola6b9998b2015-03-10 22:00:25 +0000[diff] [blame]720 SectionKind::getMetadata(), "names_begin");
Rafael Espindola6ed58a22015-03-10 21:16:18 +0000[diff] [blame]721 DwarfAccelNamespaceSection = Ctx->getCOFFSection(
722 ".apple_namespaces",
723 COFF::IMAGE_SCN_MEM_DISCARDABLE | COFF::IMAGE_SCN_CNT_INITIALIZED_DATA |
724 COFF::IMAGE_SCN_MEM_READ,
Rafael Espindola6b9998b2015-03-10 22:00:25 +0000[diff] [blame]725 SectionKind::getMetadata(), "namespac_begin");
Rafael Espindola6ed58a22015-03-10 21:16:18 +0000[diff] [blame]726 DwarfAccelTypesSection = Ctx->getCOFFSection(
727 ".apple_types",
728 COFF::IMAGE_SCN_MEM_DISCARDABLE | COFF::IMAGE_SCN_CNT_INITIALIZED_DATA |
729 COFF::IMAGE_SCN_MEM_READ,
Rafael Espindola6b9998b2015-03-10 22:00:25 +0000[diff] [blame]730 SectionKind::getMetadata(), "types_begin");
Rafael Espindola6ed58a22015-03-10 21:16:18 +0000[diff] [blame]731 DwarfAccelObjCSection = Ctx->getCOFFSection(
732 ".apple_objc",
733 COFF::IMAGE_SCN_MEM_DISCARDABLE | COFF::IMAGE_SCN_CNT_INITIALIZED_DATA |
734 COFF::IMAGE_SCN_MEM_READ,
Rafael Espindola6b9998b2015-03-10 22:00:25 +0000[diff] [blame]735 SectionKind::getMetadata(), "objc_begin");
Frederic Riss3f1a0a72014-11-14 20:33:40 +0000[diff] [blame]736
Rafael Espindola6ed58a22015-03-10 21:16:18 +0000[diff] [blame]737 DrectveSection = Ctx->getCOFFSection(
738 ".drectve", COFF::IMAGE_SCN_LNK_INFO | COFF::IMAGE_SCN_LNK_REMOVE,
739 SectionKind::getMetadata());
Evan Cheng76792992011-07-20 05:58:47 +0000[diff] [blame]740
Rafael Espindola6ed58a22015-03-10 21:16:18 +0000[diff] [blame]741 PDataSection = Ctx->getCOFFSection(
742 ".pdata", COFF::IMAGE_SCN_CNT_INITIALIZED_DATA | COFF::IMAGE_SCN_MEM_READ,
Rafael Espindola449711c2015-11-18 06:02:15 +0000[diff] [blame]743 SectionKind::getData());
Evan Cheng76792992011-07-20 05:58:47 +0000[diff] [blame]744
Rafael Espindola6ed58a22015-03-10 21:16:18 +0000[diff] [blame]745 XDataSection = Ctx->getCOFFSection(
746 ".xdata", COFF::IMAGE_SCN_CNT_INITIALIZED_DATA | COFF::IMAGE_SCN_MEM_READ,
Rafael Espindola449711c2015-11-18 06:02:15 +0000[diff] [blame]747 SectionKind::getData());
Saleem Abdulrasoola35f04a2014-06-08 00:34:23 +0000[diff] [blame]748
David Majnemer4eecd302015-05-30 04:56:02 +0000[diff] [blame]749 SXDataSection = Ctx->getCOFFSection(".sxdata", COFF::IMAGE_SCN_LNK_INFO,
750 SectionKind::getMetadata());
751
Rafael Espindola6ed58a22015-03-10 21:16:18 +0000[diff] [blame]752 TLSDataSection = Ctx->getCOFFSection(
753 ".tls$", COFF::IMAGE_SCN_CNT_INITIALIZED_DATA | COFF::IMAGE_SCN_MEM_READ |
754 COFF::IMAGE_SCN_MEM_WRITE,
Rafael Espindola449711c2015-11-18 06:02:15 +0000[diff] [blame]755 SectionKind::getData());
NAKAMURA Takumi0a7d0ad2015-09-22 11:15:07 +0000[diff] [blame]756
Swaroop Sridhare9247ab2015-06-25 00:28:42 +0000[diff] [blame]757 StackMapSection = Ctx->getCOFFSection(".llvm_stackmaps",
758 COFF::IMAGE_SCN_CNT_INITIALIZED_DATA |
759 COFF::IMAGE_SCN_MEM_READ,
NAKAMURA Takumi0a7d0ad2015-09-22 11:15:07 +0000[diff] [blame]760 SectionKind::getReadOnly());
Evan Cheng76792992011-07-20 05:58:47 +0000[diff] [blame]761}
762
Daniel Sanders8d8b13d2015-06-16 12:18:07 +0000[diff] [blame]763void MCObjectFileInfo::InitMCObjectFileInfo(const Triple &TheTriple,
764 Reloc::Model relocm,
Evan Chengbbf3b0d2011-07-20 19:50:42 +0000[diff] [blame]765 CodeModel::Model cm,
Evan Cheng76792992011-07-20 05:58:47 +0000[diff] [blame]766 MCContext &ctx) {
767 RelocM = relocm;
Evan Chengbbf3b0d2011-07-20 19:50:42 +0000[diff] [blame]768 CMModel = cm;
Evan Cheng76792992011-07-20 05:58:47 +0000[diff] [blame]769 Ctx = &ctx;
770
771 // Common.
772 CommDirectiveSupportsAlignment = true;
773 SupportsWeakOmittedEHFrame = true;
Tim Northoverd1c6f512014-03-29 09:03:13 +0000[diff] [blame]774 SupportsCompactUnwindWithoutEHFrame = false;
Tim Northoverf8e47e42015-10-28 22:56:36 +0000[diff] [blame]775 OmitDwarfIfHaveCompactUnwind = false;
Evan Chengbbf3b0d2011-07-20 19:50:42 +0000[diff] [blame]776
Rafael Espindolaaa7851d2014-05-12 13:47:05 +0000[diff] [blame]777 PersonalityEncoding = LSDAEncoding = FDECFIEncoding = TTypeEncoding =
778 dwarf::DW_EH_PE_absptr;
Evan Chengbbf3b0d2011-07-20 19:50:42 +0000[diff] [blame]779
Bill Wendling2d1df6b2013-04-10 21:42:06 +0000[diff] [blame]780 CompactUnwindDwarfEHFrameOnly = 0;
781
Craig Topperbb694de2014-04-13 04:57:38 +0000[diff] [blame]782 EHFrameSection = nullptr; // Created on demand.
783 CompactUnwindSection = nullptr; // Used only by selected targets.
784 DwarfAccelNamesSection = nullptr; // Used only by selected targets.
785 DwarfAccelObjCSection = nullptr; // Used only by selected targets.
786 DwarfAccelNamespaceSection = nullptr; // Used only by selected targets.
787 DwarfAccelTypesSection = nullptr; // Used only by selected targets.
Evan Cheng76792992011-07-20 05:58:47 +0000[diff] [blame]788
Daniel Sanders8d8b13d2015-06-16 12:18:07 +0000[diff] [blame]789 TT = TheTriple;
Saleem Abdulrasoolbdbc0082014-06-22 22:25:01 +0000[diff] [blame]790
Rafael Espindoladbaf0492015-08-14 15:48:41 +0000[diff] [blame]791 Triple::ArchType Arch = TT.getArch();
792 // FIXME: Checking for Arch here to filter out bogus triples such as
793 // cellspu-apple-darwin. Perhaps we should fix in Triple?
794 if ((Arch == Triple::x86 || Arch == Triple::x86_64 ||
795 Arch == Triple::arm || Arch == Triple::thumb ||
796 Arch == Triple::aarch64 ||
797 Arch == Triple::ppc || Arch == Triple::ppc64 ||
798 Arch == Triple::UnknownArch) &&
799 TT.isOSBinFormatMachO()) {
800 Env = IsMachO;
Jim Grosbachbb2591f2015-06-04 23:35:03 +0000[diff] [blame]801 initMachOMCObjectFileInfo(TT);
Rafael Espindoladbaf0492015-08-14 15:48:41 +0000[diff] [blame]802 } else if ((Arch == Triple::x86 || Arch == Triple::x86_64 ||
803 Arch == Triple::arm || Arch == Triple::thumb) &&
804 (TT.isOSWindows() && TT.getObjectFormat() == Triple::COFF)) {
805 Env = IsCOFF;
Jim Grosbachbb2591f2015-06-04 23:35:03 +0000[diff] [blame]806 initCOFFMCObjectFileInfo(TT);
Rafael Espindoladbaf0492015-08-14 15:48:41 +0000[diff] [blame]807 } else {
808 Env = IsELF;
Jim Grosbachbb2591f2015-06-04 23:35:03 +0000[diff] [blame]809 initELFMCObjectFileInfo(TT);
Evan Cheng76792992011-07-20 05:58:47 +0000[diff] [blame]810 }
811}
812
Daniel Sanders8d8b13d2015-06-16 12:18:07 +0000[diff] [blame]813void MCObjectFileInfo::InitMCObjectFileInfo(StringRef TT, Reloc::Model RM,
814 CodeModel::Model CM,
815 MCContext &ctx) {
816 InitMCObjectFileInfo(Triple(TT), RM, CM, ctx);
817}
818
Rafael Espindola0709a7b2015-05-21 19:20:38 +0000[diff] [blame]819MCSection *MCObjectFileInfo::getDwarfTypesSection(uint64_t Hash) const {
David Blaikiebc563272013-12-13 21:33:40 +0000[diff] [blame]820 return Ctx->getELFSection(".debug_types", ELF::SHT_PROGBITS, ELF::SHF_GROUP,
Rafael Espindolaba31e272015-01-29 17:33:21 +0000[diff] [blame]821 0, utostr(Hash));
David Blaikiebc563272013-12-13 21:33:40 +0000[diff] [blame]822}