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gerrit-public.fairphone.software / toolchain / llvm-project / ed7fc4b7756ba948fe039655462ad1dcc9d7d7ca / . / llvm / lib / MC / MCObjectFileInfo.cpp
blob: d3d0832344762cc34d587d4cacb51d425127d43e [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"
Evan Cheng76792992011-07-20 05:58:47 +0000[diff] [blame]19using namespace llvm;
20
21void MCObjectFileInfo::InitMachOMCObjectFileInfo(Triple T) {
22 // MachO
23 IsFunctionEHFrameSymbolPrivate = false;
24 SupportsWeakOmittedEHFrame = false;
25
Tim Northover3b0846e2014-05-24 12:50:23 +0000[diff] [blame]26 if (T.isOSDarwin() &&
27 (T.getArch() == Triple::arm64 || T.getArch() == Triple::aarch64))
Tim Northover00ed9962014-03-29 10:18:08 +0000[diff] [blame]28 SupportsCompactUnwindWithoutEHFrame = true;
29
Evan Chengbbf3b0d2011-07-20 19:50:42 +0000[diff] [blame]30 PersonalityEncoding = dwarf::DW_EH_PE_indirect | dwarf::DW_EH_PE_pcrel
31 | dwarf::DW_EH_PE_sdata4;
Rafael Espindolaaa7851d2014-05-12 13:47:05 +0000[diff] [blame]32 LSDAEncoding = FDECFIEncoding = dwarf::DW_EH_PE_pcrel;
Evan Chengbbf3b0d2011-07-20 19:50:42 +0000[diff] [blame]33 TTypeEncoding = dwarf::DW_EH_PE_indirect | dwarf::DW_EH_PE_pcrel |
34 dwarf::DW_EH_PE_sdata4;
35
Evan Cheng76792992011-07-20 05:58:47 +0000[diff] [blame]36 // .comm doesn't support alignment before Leopard.
37 if (T.isMacOSX() && T.isMacOSXVersionLT(10, 5))
38 CommDirectiveSupportsAlignment = false;
39
40 TextSection // .text
41 = Ctx->getMachOSection("__TEXT", "__text",
David Majnemer7b583052014-03-07 07:36:05 +0000[diff] [blame]42 MachO::S_ATTR_PURE_INSTRUCTIONS,
Evan Cheng76792992011-07-20 05:58:47 +0000[diff] [blame]43 SectionKind::getText());
44 DataSection // .data
45 = Ctx->getMachOSection("__DATA", "__data", 0,
46 SectionKind::getDataRel());
47
NAKAMURA Takumi68fa6f92013-09-21 02:34:45 +0000[diff] [blame]48 // BSSSection might not be expected initialized on msvc.
Craig Topperbb694de2014-04-13 04:57:38 +0000[diff] [blame]49 BSSSection = nullptr;
NAKAMURA Takumi68fa6f92013-09-21 02:34:45 +0000[diff] [blame]50
Evan Cheng76792992011-07-20 05:58:47 +0000[diff] [blame]51 TLSDataSection // .tdata
52 = Ctx->getMachOSection("__DATA", "__thread_data",
David Majnemer7b583052014-03-07 07:36:05 +0000[diff] [blame]53 MachO::S_THREAD_LOCAL_REGULAR,
Evan Cheng76792992011-07-20 05:58:47 +0000[diff] [blame]54 SectionKind::getDataRel());
55 TLSBSSSection // .tbss
56 = Ctx->getMachOSection("__DATA", "__thread_bss",
David Majnemer7b583052014-03-07 07:36:05 +0000[diff] [blame]57 MachO::S_THREAD_LOCAL_ZEROFILL,
Evan Cheng76792992011-07-20 05:58:47 +0000[diff] [blame]58 SectionKind::getThreadBSS());
59
60 // TODO: Verify datarel below.
61 TLSTLVSection // .tlv
62 = Ctx->getMachOSection("__DATA", "__thread_vars",
David Majnemer7b583052014-03-07 07:36:05 +0000[diff] [blame]63 MachO::S_THREAD_LOCAL_VARIABLES,
Evan Cheng76792992011-07-20 05:58:47 +0000[diff] [blame]64 SectionKind::getDataRel());
65
66 TLSThreadInitSection
67 = Ctx->getMachOSection("__DATA", "__thread_init",
David Majnemer7b583052014-03-07 07:36:05 +0000[diff] [blame]68 MachO::S_THREAD_LOCAL_INIT_FUNCTION_POINTERS,
Jim Grosbach0dde3492011-11-15 16:46:22 +0000[diff] [blame]69 SectionKind::getDataRel());
Evan Cheng76792992011-07-20 05:58:47 +0000[diff] [blame]70
71 CStringSection // .cstring
72 = Ctx->getMachOSection("__TEXT", "__cstring",
David Majnemer7b583052014-03-07 07:36:05 +0000[diff] [blame]73 MachO::S_CSTRING_LITERALS,
Evan Cheng76792992011-07-20 05:58:47 +0000[diff] [blame]74 SectionKind::getMergeable1ByteCString());
75 UStringSection
76 = Ctx->getMachOSection("__TEXT","__ustring", 0,
77 SectionKind::getMergeable2ByteCString());
78 FourByteConstantSection // .literal4
79 = Ctx->getMachOSection("__TEXT", "__literal4",
David Majnemer7b583052014-03-07 07:36:05 +0000[diff] [blame]80 MachO::S_4BYTE_LITERALS,
Evan Cheng76792992011-07-20 05:58:47 +0000[diff] [blame]81 SectionKind::getMergeableConst4());
82 EightByteConstantSection // .literal8
83 = Ctx->getMachOSection("__TEXT", "__literal8",
David Majnemer7b583052014-03-07 07:36:05 +0000[diff] [blame]84 MachO::S_8BYTE_LITERALS,
Evan Cheng76792992011-07-20 05:58:47 +0000[diff] [blame]85 SectionKind::getMergeableConst8());
86
Rafael Espindola1f3de492014-02-13 23:16:11 +0000[diff] [blame]87 SixteenByteConstantSection // .literal16
88 = Ctx->getMachOSection("__TEXT", "__literal16",
David Majnemer7b583052014-03-07 07:36:05 +0000[diff] [blame]89 MachO::S_16BYTE_LITERALS,
Rafael Espindola1f3de492014-02-13 23:16:11 +0000[diff] [blame]90 SectionKind::getMergeableConst16());
Evan Cheng76792992011-07-20 05:58:47 +0000[diff] [blame]91
92 ReadOnlySection // .const
93 = Ctx->getMachOSection("__TEXT", "__const", 0,
94 SectionKind::getReadOnly());
95
96 TextCoalSection
97 = Ctx->getMachOSection("__TEXT", "__textcoal_nt",
David Majnemer7b583052014-03-07 07:36:05 +0000[diff] [blame]98 MachO::S_COALESCED |
99 MachO::S_ATTR_PURE_INSTRUCTIONS,
Evan Cheng76792992011-07-20 05:58:47 +0000[diff] [blame]100 SectionKind::getText());
101 ConstTextCoalSection
102 = Ctx->getMachOSection("__TEXT", "__const_coal",
David Majnemer7b583052014-03-07 07:36:05 +0000[diff] [blame]103 MachO::S_COALESCED,
Evan Cheng76792992011-07-20 05:58:47 +0000[diff] [blame]104 SectionKind::getReadOnly());
105 ConstDataSection // .const_data
106 = Ctx->getMachOSection("__DATA", "__const", 0,
107 SectionKind::getReadOnlyWithRel());
108 DataCoalSection
109 = Ctx->getMachOSection("__DATA","__datacoal_nt",
David Majnemer7b583052014-03-07 07:36:05 +0000[diff] [blame]110 MachO::S_COALESCED,
Evan Cheng76792992011-07-20 05:58:47 +0000[diff] [blame]111 SectionKind::getDataRel());
112 DataCommonSection
113 = Ctx->getMachOSection("__DATA","__common",
David Majnemer7b583052014-03-07 07:36:05 +0000[diff] [blame]114 MachO::S_ZEROFILL,
Evan Cheng76792992011-07-20 05:58:47 +0000[diff] [blame]115 SectionKind::getBSS());
116 DataBSSSection
David Majnemer7b583052014-03-07 07:36:05 +0000[diff] [blame]117 = Ctx->getMachOSection("__DATA","__bss", MachO::S_ZEROFILL,
Evan Cheng76792992011-07-20 05:58:47 +0000[diff] [blame]118 SectionKind::getBSS());
119
120
121 LazySymbolPointerSection
122 = Ctx->getMachOSection("__DATA", "__la_symbol_ptr",
David Majnemer7b583052014-03-07 07:36:05 +0000[diff] [blame]123 MachO::S_LAZY_SYMBOL_POINTERS,
Evan Cheng76792992011-07-20 05:58:47 +0000[diff] [blame]124 SectionKind::getMetadata());
125 NonLazySymbolPointerSection
126 = Ctx->getMachOSection("__DATA", "__nl_symbol_ptr",
David Majnemer7b583052014-03-07 07:36:05 +0000[diff] [blame]127 MachO::S_NON_LAZY_SYMBOL_POINTERS,
Evan Cheng76792992011-07-20 05:58:47 +0000[diff] [blame]128 SectionKind::getMetadata());
129
130 if (RelocM == Reloc::Static) {
131 StaticCtorSection
132 = Ctx->getMachOSection("__TEXT", "__constructor", 0,
133 SectionKind::getDataRel());
134 StaticDtorSection
135 = Ctx->getMachOSection("__TEXT", "__destructor", 0,
136 SectionKind::getDataRel());
137 } else {
138 StaticCtorSection
139 = Ctx->getMachOSection("__DATA", "__mod_init_func",
David Majnemer7b583052014-03-07 07:36:05 +0000[diff] [blame]140 MachO::S_MOD_INIT_FUNC_POINTERS,
Evan Cheng76792992011-07-20 05:58:47 +0000[diff] [blame]141 SectionKind::getDataRel());
142 StaticDtorSection
143 = Ctx->getMachOSection("__DATA", "__mod_term_func",
David Majnemer7b583052014-03-07 07:36:05 +0000[diff] [blame]144 MachO::S_MOD_TERM_FUNC_POINTERS,
Evan Cheng76792992011-07-20 05:58:47 +0000[diff] [blame]145 SectionKind::getDataRel());
146 }
147
148 // Exception Handling.
149 LSDASection = Ctx->getMachOSection("__TEXT", "__gcc_except_tab", 0,
150 SectionKind::getReadOnlyWithRel());
151
Craig Topperbb694de2014-04-13 04:57:38 +0000[diff] [blame]152 COFFDebugSymbolsSection = nullptr;
Timur Iskhodzhanovf166f6c2014-01-30 01:39:17 +0000[diff] [blame]153
Tim Northover00ed9962014-03-29 10:18:08 +0000[diff] [blame]154 if ((T.isMacOSX() && !T.isMacOSXVersionLT(10, 6)) ||
Tim Northover3b0846e2014-05-24 12:50:23 +0000[diff] [blame]155 (T.isOSDarwin() &&
156 (T.getArch() == Triple::arm64 || T.getArch() == Triple::aarch64))) {
Evan Cheng76792992011-07-20 05:58:47 +0000[diff] [blame]157 CompactUnwindSection =
158 Ctx->getMachOSection("__LD", "__compact_unwind",
David Majnemer7b583052014-03-07 07:36:05 +0000[diff] [blame]159 MachO::S_ATTR_DEBUG,
Evan Cheng76792992011-07-20 05:58:47 +0000[diff] [blame]160 SectionKind::getReadOnly());
161
Bill Wendling2d1df6b2013-04-10 21:42:06 +0000[diff] [blame]162 if (T.getArch() == Triple::x86_64 || T.getArch() == Triple::x86)
163 CompactUnwindDwarfEHFrameOnly = 0x04000000;
Tim Northover3b0846e2014-05-24 12:50:23 +0000[diff] [blame]164 else if (T.getArch() == Triple::arm64 || T.getArch() == Triple::aarch64)
Tim Northover00ed9962014-03-29 10:18:08 +0000[diff] [blame]165 CompactUnwindDwarfEHFrameOnly = 0x03000000;
Bill Wendling2d1df6b2013-04-10 21:42:06 +0000[diff] [blame]166 }
167
Evan Cheng76792992011-07-20 05:58:47 +0000[diff] [blame]168 // Debug Information.
Eric Christopher4996c702011-11-07 09:24:32 +0000[diff] [blame]169 DwarfAccelNamesSection =
170 Ctx->getMachOSection("__DWARF", "__apple_names",
David Majnemer7b583052014-03-07 07:36:05 +0000[diff] [blame]171 MachO::S_ATTR_DEBUG,
Eric Christopher4996c702011-11-07 09:24:32 +0000[diff] [blame]172 SectionKind::getMetadata());
173 DwarfAccelObjCSection =
174 Ctx->getMachOSection("__DWARF", "__apple_objc",
David Majnemer7b583052014-03-07 07:36:05 +0000[diff] [blame]175 MachO::S_ATTR_DEBUG,
Eric Christopher4996c702011-11-07 09:24:32 +0000[diff] [blame]176 SectionKind::getMetadata());
177 // 16 character section limit...
178 DwarfAccelNamespaceSection =
179 Ctx->getMachOSection("__DWARF", "__apple_namespac",
David Majnemer7b583052014-03-07 07:36:05 +0000[diff] [blame]180 MachO::S_ATTR_DEBUG,
Eric Christopher4996c702011-11-07 09:24:32 +0000[diff] [blame]181 SectionKind::getMetadata());
182 DwarfAccelTypesSection =
183 Ctx->getMachOSection("__DWARF", "__apple_types",
David Majnemer7b583052014-03-07 07:36:05 +0000[diff] [blame]184 MachO::S_ATTR_DEBUG,
Eric Christopher4996c702011-11-07 09:24:32 +0000[diff] [blame]185 SectionKind::getMetadata());
Jim Grosbachdc1e36e2012-05-11 01:41:30 +0000[diff] [blame]186
Evan Cheng76792992011-07-20 05:58:47 +0000[diff] [blame]187 DwarfAbbrevSection =
188 Ctx->getMachOSection("__DWARF", "__debug_abbrev",
David Majnemer7b583052014-03-07 07:36:05 +0000[diff] [blame]189 MachO::S_ATTR_DEBUG,
Evan Cheng76792992011-07-20 05:58:47 +0000[diff] [blame]190 SectionKind::getMetadata());
191 DwarfInfoSection =
192 Ctx->getMachOSection("__DWARF", "__debug_info",
David Majnemer7b583052014-03-07 07:36:05 +0000[diff] [blame]193 MachO::S_ATTR_DEBUG,
Evan Cheng76792992011-07-20 05:58:47 +0000[diff] [blame]194 SectionKind::getMetadata());
195 DwarfLineSection =
196 Ctx->getMachOSection("__DWARF", "__debug_line",
David Majnemer7b583052014-03-07 07:36:05 +0000[diff] [blame]197 MachO::S_ATTR_DEBUG,
Evan Cheng76792992011-07-20 05:58:47 +0000[diff] [blame]198 SectionKind::getMetadata());
199 DwarfFrameSection =
200 Ctx->getMachOSection("__DWARF", "__debug_frame",
David Majnemer7b583052014-03-07 07:36:05 +0000[diff] [blame]201 MachO::S_ATTR_DEBUG,
Evan Cheng76792992011-07-20 05:58:47 +0000[diff] [blame]202 SectionKind::getMetadata());
Krzysztof Parzyszek228daa62013-02-12 18:00:14 +0000[diff] [blame]203 DwarfPubNamesSection =
204 Ctx->getMachOSection("__DWARF", "__debug_pubnames",
David Majnemer7b583052014-03-07 07:36:05 +0000[diff] [blame]205 MachO::S_ATTR_DEBUG,
Krzysztof Parzyszek228daa62013-02-12 18:00:14 +0000[diff] [blame]206 SectionKind::getMetadata());
Evan Cheng76792992011-07-20 05:58:47 +0000[diff] [blame]207 DwarfPubTypesSection =
208 Ctx->getMachOSection("__DWARF", "__debug_pubtypes",
David Majnemer7b583052014-03-07 07:36:05 +0000[diff] [blame]209 MachO::S_ATTR_DEBUG,
Evan Cheng76792992011-07-20 05:58:47 +0000[diff] [blame]210 SectionKind::getMetadata());
Eric Christopherb0e76942013-09-09 20:03:14 +0000[diff] [blame]211 DwarfGnuPubNamesSection =
212 Ctx->getMachOSection("__DWARF", "__debug_gnu_pubn",
David Majnemer7b583052014-03-07 07:36:05 +0000[diff] [blame]213 MachO::S_ATTR_DEBUG,
Eric Christopherb0e76942013-09-09 20:03:14 +0000[diff] [blame]214 SectionKind::getMetadata());
215 DwarfGnuPubTypesSection =
216 Ctx->getMachOSection("__DWARF", "__debug_gnu_pubt",
David Majnemer7b583052014-03-07 07:36:05 +0000[diff] [blame]217 MachO::S_ATTR_DEBUG,
Eric Christopherb0e76942013-09-09 20:03:14 +0000[diff] [blame]218 SectionKind::getMetadata());
Evan Cheng76792992011-07-20 05:58:47 +0000[diff] [blame]219 DwarfStrSection =
220 Ctx->getMachOSection("__DWARF", "__debug_str",
David Majnemer7b583052014-03-07 07:36:05 +0000[diff] [blame]221 MachO::S_ATTR_DEBUG,
Evan Cheng76792992011-07-20 05:58:47 +0000[diff] [blame]222 SectionKind::getMetadata());
223 DwarfLocSection =
224 Ctx->getMachOSection("__DWARF", "__debug_loc",
David Majnemer7b583052014-03-07 07:36:05 +0000[diff] [blame]225 MachO::S_ATTR_DEBUG,
Evan Cheng76792992011-07-20 05:58:47 +0000[diff] [blame]226 SectionKind::getMetadata());
227 DwarfARangesSection =
228 Ctx->getMachOSection("__DWARF", "__debug_aranges",
David Majnemer7b583052014-03-07 07:36:05 +0000[diff] [blame]229 MachO::S_ATTR_DEBUG,
Evan Cheng76792992011-07-20 05:58:47 +0000[diff] [blame]230 SectionKind::getMetadata());
231 DwarfRangesSection =
232 Ctx->getMachOSection("__DWARF", "__debug_ranges",
David Majnemer7b583052014-03-07 07:36:05 +0000[diff] [blame]233 MachO::S_ATTR_DEBUG,
Evan Cheng76792992011-07-20 05:58:47 +0000[diff] [blame]234 SectionKind::getMetadata());
235 DwarfMacroInfoSection =
236 Ctx->getMachOSection("__DWARF", "__debug_macinfo",
David Majnemer7b583052014-03-07 07:36:05 +0000[diff] [blame]237 MachO::S_ATTR_DEBUG,
Evan Cheng76792992011-07-20 05:58:47 +0000[diff] [blame]238 SectionKind::getMetadata());
239 DwarfDebugInlineSection =
240 Ctx->getMachOSection("__DWARF", "__debug_inlined",
David Majnemer7b583052014-03-07 07:36:05 +0000[diff] [blame]241 MachO::S_ATTR_DEBUG,
Evan Cheng76792992011-07-20 05:58:47 +0000[diff] [blame]242 SectionKind::getMetadata());
Lang Hames30789772013-11-08 22:14:49 +0000[diff] [blame]243 StackMapSection =
244 Ctx->getMachOSection("__LLVM_STACKMAPS", "__llvm_stackmaps", 0,
245 SectionKind::getMetadata());
Evan Cheng76792992011-07-20 05:58:47 +0000[diff] [blame]246
247 TLSExtraDataSection = TLSTLVSection;
248}
249
250void MCObjectFileInfo::InitELFMCObjectFileInfo(Triple T) {
Joerg Sonnenberger7c442522014-04-30 23:23:14 +0000[diff] [blame]251 switch (T.getArch()) {
252 case Triple::mips:
253 case Triple::mipsel:
Rafael Espindolab9b7ae02013-04-03 03:13:19 +0000[diff] [blame]254 FDECFIEncoding = dwarf::DW_EH_PE_sdata4;
Joerg Sonnenberger7c442522014-04-30 23:23:14 +0000[diff] [blame]255 break;
256 case Triple::mips64:
257 case Triple::mips64el:
Rafael Espindolab9b7ae02013-04-03 03:13:19 +0000[diff] [blame]258 FDECFIEncoding = dwarf::DW_EH_PE_sdata8;
Joerg Sonnenberger7c442522014-04-30 23:23:14 +0000[diff] [blame]259 break;
260 default:
Rafael Espindolaef9d3492013-03-15 05:51:57 +0000[diff] [blame]261 FDECFIEncoding = dwarf::DW_EH_PE_pcrel | dwarf::DW_EH_PE_sdata4;
Joerg Sonnenberger7c442522014-04-30 23:23:14 +0000[diff] [blame]262 break;
263 }
Rafael Espindolaef9d3492013-03-15 05:51:57 +0000[diff] [blame]264
Joerg Sonnenberger7c442522014-04-30 23:23:14 +0000[diff] [blame]265 switch (T.getArch()) {
Joerg Sonnenbergercf86ce12014-05-07 07:49:34 +0000[diff] [blame]266 case Triple::arm:
267 case Triple::armeb:
268 case Triple::thumb:
269 case Triple::thumbeb:
Joerg Sonnenberger94cbb662014-05-13 17:58:13 +0000[diff] [blame]270 if (Ctx->getAsmInfo()->getExceptionHandlingType() == ExceptionHandling::ARM)
271 break;
272 // Fallthrough if not using EHABI
Joerg Sonnenberger7c442522014-04-30 23:23:14 +0000[diff] [blame]273 case Triple::x86:
Evan Chengbbf3b0d2011-07-20 19:50:42 +0000[diff] [blame]274 PersonalityEncoding = (RelocM == Reloc::PIC_)
Jim Grosbach0dde3492011-11-15 16:46:22 +0000[diff] [blame]275 ? dwarf::DW_EH_PE_indirect | dwarf::DW_EH_PE_pcrel | dwarf::DW_EH_PE_sdata4
276 : dwarf::DW_EH_PE_absptr;
Evan Chengbbf3b0d2011-07-20 19:50:42 +0000[diff] [blame]277 LSDAEncoding = (RelocM == Reloc::PIC_)
278 ? dwarf::DW_EH_PE_pcrel | dwarf::DW_EH_PE_sdata4
279 : dwarf::DW_EH_PE_absptr;
Evan Chengbbf3b0d2011-07-20 19:50:42 +0000[diff] [blame]280 TTypeEncoding = (RelocM == Reloc::PIC_)
Jim Grosbach0dde3492011-11-15 16:46:22 +0000[diff] [blame]281 ? dwarf::DW_EH_PE_indirect | dwarf::DW_EH_PE_pcrel | dwarf::DW_EH_PE_sdata4
282 : dwarf::DW_EH_PE_absptr;
Joerg Sonnenberger7c442522014-04-30 23:23:14 +0000[diff] [blame]283 break;
284 case Triple::x86_64:
Evan Chengbbf3b0d2011-07-20 19:50:42 +0000[diff] [blame]285 if (RelocM == Reloc::PIC_) {
286 PersonalityEncoding = dwarf::DW_EH_PE_indirect | dwarf::DW_EH_PE_pcrel |
287 ((CMModel == CodeModel::Small || CMModel == CodeModel::Medium)
288 ? dwarf::DW_EH_PE_sdata4 : dwarf::DW_EH_PE_sdata8);
289 LSDAEncoding = dwarf::DW_EH_PE_pcrel |
290 (CMModel == CodeModel::Small
291 ? dwarf::DW_EH_PE_sdata4 : dwarf::DW_EH_PE_sdata8);
Evan Chengbbf3b0d2011-07-20 19:50:42 +0000[diff] [blame]292 TTypeEncoding = dwarf::DW_EH_PE_indirect | dwarf::DW_EH_PE_pcrel |
293 ((CMModel == CodeModel::Small || CMModel == CodeModel::Medium)
294 ? dwarf::DW_EH_PE_sdata4 : dwarf::DW_EH_PE_sdata8);
295 } else {
296 PersonalityEncoding =
297 (CMModel == CodeModel::Small || CMModel == CodeModel::Medium)
298 ? dwarf::DW_EH_PE_udata4 : dwarf::DW_EH_PE_absptr;
299 LSDAEncoding = (CMModel == CodeModel::Small)
300 ? dwarf::DW_EH_PE_udata4 : dwarf::DW_EH_PE_absptr;
Evan Chengbbf3b0d2011-07-20 19:50:42 +0000[diff] [blame]301 TTypeEncoding = (CMModel == CodeModel::Small)
302 ? dwarf::DW_EH_PE_udata4 : dwarf::DW_EH_PE_absptr;
303 }
Joerg Sonnenberger7c442522014-04-30 23:23:14 +0000[diff] [blame]304 break;
305 case Triple::aarch64:
306 case Triple::aarch64_be:
307 case Triple::arm64:
308 case Triple::arm64_be:
Tim Northovere0e3aef2013-01-31 12:12:40 +0000[diff] [blame]309 // The small model guarantees static code/data size < 4GB, but not where it
310 // will be in memory. Most of these could end up >2GB away so even a signed
311 // pc-relative 32-bit address is insufficient, theoretically.
312 if (RelocM == Reloc::PIC_) {
313 PersonalityEncoding = dwarf::DW_EH_PE_indirect | dwarf::DW_EH_PE_pcrel |
314 dwarf::DW_EH_PE_sdata8;
315 LSDAEncoding = dwarf::DW_EH_PE_pcrel | dwarf::DW_EH_PE_sdata8;
Tim Northovere0e3aef2013-01-31 12:12:40 +0000[diff] [blame]316 TTypeEncoding = dwarf::DW_EH_PE_indirect | dwarf::DW_EH_PE_pcrel |
317 dwarf::DW_EH_PE_sdata8;
318 } else {
319 PersonalityEncoding = dwarf::DW_EH_PE_absptr;
320 LSDAEncoding = dwarf::DW_EH_PE_absptr;
Tim Northovere0e3aef2013-01-31 12:12:40 +0000[diff] [blame]321 TTypeEncoding = dwarf::DW_EH_PE_absptr;
322 }
Joerg Sonnenberger7c442522014-04-30 23:23:14 +0000[diff] [blame]323 break;
Logan Chienc0029812014-05-30 16:48:56 +0000[diff] [blame]324 case Triple::mips:
325 case Triple::mipsel:
326 // MIPS uses indirect pointer to refer personality functions, so that the
327 // eh_frame section can be read-only. DW.ref.personality will be generated
328 // for relocation.
329 PersonalityEncoding = dwarf::DW_EH_PE_indirect;
330 break;
Joerg Sonnenberger7c442522014-04-30 23:23:14 +0000[diff] [blame]331 case Triple::ppc64:
332 case Triple::ppc64le:
Adhemerval Zanella1ae22482013-01-09 17:08:15 +0000[diff] [blame]333 PersonalityEncoding = dwarf::DW_EH_PE_indirect | dwarf::DW_EH_PE_pcrel |
334 dwarf::DW_EH_PE_udata8;
Adhemerval Zanella1ae22482013-01-09 17:08:15 +0000[diff] [blame]335 LSDAEncoding = dwarf::DW_EH_PE_pcrel | dwarf::DW_EH_PE_udata8;
Adhemerval Zanella1ae22482013-01-09 17:08:15 +0000[diff] [blame]336 TTypeEncoding = dwarf::DW_EH_PE_indirect | dwarf::DW_EH_PE_pcrel |
337 dwarf::DW_EH_PE_udata8;
Joerg Sonnenberger7c442522014-04-30 23:23:14 +0000[diff] [blame]338 break;
339 case Triple::sparc:
Jakob Stoklund Olesen83c67732014-01-28 02:52:26 +0000[diff] [blame]340 if (RelocM == Reloc::PIC_) {
341 LSDAEncoding = dwarf::DW_EH_PE_pcrel | dwarf::DW_EH_PE_sdata4;
342 PersonalityEncoding = dwarf::DW_EH_PE_indirect | dwarf::DW_EH_PE_pcrel |
343 dwarf::DW_EH_PE_sdata4;
Jakob Stoklund Olesen83c67732014-01-28 02:52:26 +0000[diff] [blame]344 TTypeEncoding = dwarf::DW_EH_PE_indirect | dwarf::DW_EH_PE_pcrel |
345 dwarf::DW_EH_PE_sdata4;
346 } else {
347 LSDAEncoding = dwarf::DW_EH_PE_absptr;
348 PersonalityEncoding = dwarf::DW_EH_PE_absptr;
Jakob Stoklund Olesen83c67732014-01-28 02:52:26 +0000[diff] [blame]349 TTypeEncoding = dwarf::DW_EH_PE_absptr;
350 }
Joerg Sonnenbergerfa9cf652014-04-30 23:36:24 +0000[diff] [blame]351 break;
Joerg Sonnenberger7c442522014-04-30 23:23:14 +0000[diff] [blame]352 case Triple::sparcv9:
Jakob Stoklund Olesen83c67732014-01-28 02:52:26 +0000[diff] [blame]353 LSDAEncoding = dwarf::DW_EH_PE_pcrel | dwarf::DW_EH_PE_sdata4;
354 if (RelocM == Reloc::PIC_) {
355 PersonalityEncoding = dwarf::DW_EH_PE_indirect | dwarf::DW_EH_PE_pcrel |
356 dwarf::DW_EH_PE_sdata4;
Jakob Stoklund Olesen83c67732014-01-28 02:52:26 +0000[diff] [blame]357 TTypeEncoding = dwarf::DW_EH_PE_indirect | dwarf::DW_EH_PE_pcrel |
358 dwarf::DW_EH_PE_sdata4;
359 } else {
360 PersonalityEncoding = dwarf::DW_EH_PE_absptr;
Jakob Stoklund Olesen83c67732014-01-28 02:52:26 +0000[diff] [blame]361 TTypeEncoding = dwarf::DW_EH_PE_absptr;
362 }
Joerg Sonnenbergerfa9cf652014-04-30 23:36:24 +0000[diff] [blame]363 break;
Joerg Sonnenberger7c442522014-04-30 23:23:14 +0000[diff] [blame]364 case Triple::systemz:
Ulrich Weigand0213e7f2013-05-06 16:11:12 +0000[diff] [blame]365 // All currently-defined code models guarantee that 4-byte PC-relative
366 // values will be in range.
Ulrich Weigande7c6dfe2013-05-06 17:28:30 +0000[diff] [blame]367 if (RelocM == Reloc::PIC_) {
368 PersonalityEncoding = dwarf::DW_EH_PE_indirect | dwarf::DW_EH_PE_pcrel |
369 dwarf::DW_EH_PE_sdata4;
370 LSDAEncoding = dwarf::DW_EH_PE_pcrel | dwarf::DW_EH_PE_sdata4;
Ulrich Weigande7c6dfe2013-05-06 17:28:30 +0000[diff] [blame]371 TTypeEncoding = dwarf::DW_EH_PE_indirect | dwarf::DW_EH_PE_pcrel |
372 dwarf::DW_EH_PE_sdata4;
373 } else {
374 PersonalityEncoding = dwarf::DW_EH_PE_absptr;
375 LSDAEncoding = dwarf::DW_EH_PE_absptr;
Ulrich Weigande7c6dfe2013-05-06 17:28:30 +0000[diff] [blame]376 TTypeEncoding = dwarf::DW_EH_PE_absptr;
377 }
Joerg Sonnenbergerfa9cf652014-04-30 23:36:24 +0000[diff] [blame]378 break;
Joerg Sonnenberger7c442522014-04-30 23:23:14 +0000[diff] [blame]379 default:
380 break;
Evan Chengbbf3b0d2011-07-20 19:50:42 +0000[diff] [blame]381 }
382
David Chisnall07f8d3e2012-02-17 17:31:15 +0000[diff] [blame]383 // Solaris requires different flags for .eh_frame to seemingly every other
384 // platform.
David Chisnallbbec8722012-04-10 11:44:33 +0000[diff] [blame]385 EHSectionType = ELF::SHT_PROGBITS;
David Chisnall07f8d3e2012-02-17 17:31:15 +0000[diff] [blame]386 EHSectionFlags = ELF::SHF_ALLOC;
David Chisnallbbec8722012-04-10 11:44:33 +0000[diff] [blame]387 if (T.getOS() == Triple::Solaris) {
388 if (T.getArch() == Triple::x86_64)
389 EHSectionType = ELF::SHT_X86_64_UNWIND;
390 else
391 EHSectionFlags |= ELF::SHF_WRITE;
392 }
David Chisnall07f8d3e2012-02-17 17:31:15 +0000[diff] [blame]393
394
Evan Cheng76792992011-07-20 05:58:47 +0000[diff] [blame]395 // ELF
396 BSSSection =
397 Ctx->getELFSection(".bss", ELF::SHT_NOBITS,
Anton Korobeynikov7722a2d2012-01-25 22:24:19 +0000[diff] [blame]398 ELF::SHF_WRITE | ELF::SHF_ALLOC,
Evan Cheng76792992011-07-20 05:58:47 +0000[diff] [blame]399 SectionKind::getBSS());
400
401 TextSection =
402 Ctx->getELFSection(".text", ELF::SHT_PROGBITS,
403 ELF::SHF_EXECINSTR |
404 ELF::SHF_ALLOC,
405 SectionKind::getText());
406
407 DataSection =
408 Ctx->getELFSection(".data", ELF::SHT_PROGBITS,
409 ELF::SHF_WRITE |ELF::SHF_ALLOC,
410 SectionKind::getDataRel());
411
412 ReadOnlySection =
413 Ctx->getELFSection(".rodata", ELF::SHT_PROGBITS,
414 ELF::SHF_ALLOC,
415 SectionKind::getReadOnly());
416
417 TLSDataSection =
418 Ctx->getELFSection(".tdata", ELF::SHT_PROGBITS,
419 ELF::SHF_ALLOC | ELF::SHF_TLS |
420 ELF::SHF_WRITE,
421 SectionKind::getThreadData());
422
423 TLSBSSSection =
424 Ctx->getELFSection(".tbss", ELF::SHT_NOBITS,
425 ELF::SHF_ALLOC | ELF::SHF_TLS |
426 ELF::SHF_WRITE,
427 SectionKind::getThreadBSS());
428
429 DataRelSection =
430 Ctx->getELFSection(".data.rel", ELF::SHT_PROGBITS,
431 ELF::SHF_ALLOC |ELF::SHF_WRITE,
432 SectionKind::getDataRel());
433
434 DataRelLocalSection =
435 Ctx->getELFSection(".data.rel.local", ELF::SHT_PROGBITS,
436 ELF::SHF_ALLOC |ELF::SHF_WRITE,
437 SectionKind::getDataRelLocal());
438
439 DataRelROSection =
440 Ctx->getELFSection(".data.rel.ro", ELF::SHT_PROGBITS,
441 ELF::SHF_ALLOC |ELF::SHF_WRITE,
442 SectionKind::getReadOnlyWithRel());
443
444 DataRelROLocalSection =
445 Ctx->getELFSection(".data.rel.ro.local", ELF::SHT_PROGBITS,
446 ELF::SHF_ALLOC |ELF::SHF_WRITE,
447 SectionKind::getReadOnlyWithRelLocal());
448
449 MergeableConst4Section =
450 Ctx->getELFSection(".rodata.cst4", ELF::SHT_PROGBITS,
451 ELF::SHF_ALLOC |ELF::SHF_MERGE,
452 SectionKind::getMergeableConst4());
453
454 MergeableConst8Section =
455 Ctx->getELFSection(".rodata.cst8", ELF::SHT_PROGBITS,
456 ELF::SHF_ALLOC |ELF::SHF_MERGE,
457 SectionKind::getMergeableConst8());
458
459 MergeableConst16Section =
460 Ctx->getELFSection(".rodata.cst16", ELF::SHT_PROGBITS,
461 ELF::SHF_ALLOC |ELF::SHF_MERGE,
462 SectionKind::getMergeableConst16());
463
464 StaticCtorSection =
465 Ctx->getELFSection(".ctors", ELF::SHT_PROGBITS,
466 ELF::SHF_ALLOC |ELF::SHF_WRITE,
467 SectionKind::getDataRel());
468
469 StaticDtorSection =
470 Ctx->getELFSection(".dtors", ELF::SHT_PROGBITS,
471 ELF::SHF_ALLOC |ELF::SHF_WRITE,
472 SectionKind::getDataRel());
473
474 // Exception Handling Sections.
475
476 // FIXME: We're emitting LSDA info into a readonly section on ELF, even though
477 // it contains relocatable pointers. In PIC mode, this is probably a big
478 // runtime hit for C++ apps. Either the contents of the LSDA need to be
479 // adjusted or this should be a data section.
480 LSDASection =
481 Ctx->getELFSection(".gcc_except_table", ELF::SHT_PROGBITS,
482 ELF::SHF_ALLOC,
483 SectionKind::getReadOnly());
484
Craig Topperbb694de2014-04-13 04:57:38 +0000[diff] [blame]485 COFFDebugSymbolsSection = nullptr;
Timur Iskhodzhanovf166f6c2014-01-30 01:39:17 +0000[diff] [blame]486
Evan Cheng76792992011-07-20 05:58:47 +0000[diff] [blame]487 // Debug Info Sections.
488 DwarfAbbrevSection =
489 Ctx->getELFSection(".debug_abbrev", ELF::SHT_PROGBITS, 0,
490 SectionKind::getMetadata());
491 DwarfInfoSection =
492 Ctx->getELFSection(".debug_info", ELF::SHT_PROGBITS, 0,
493 SectionKind::getMetadata());
494 DwarfLineSection =
495 Ctx->getELFSection(".debug_line", ELF::SHT_PROGBITS, 0,
496 SectionKind::getMetadata());
497 DwarfFrameSection =
498 Ctx->getELFSection(".debug_frame", ELF::SHT_PROGBITS, 0,
499 SectionKind::getMetadata());
Krzysztof Parzyszek228daa62013-02-12 18:00:14 +0000[diff] [blame]500 DwarfPubNamesSection =
501 Ctx->getELFSection(".debug_pubnames", ELF::SHT_PROGBITS, 0,
502 SectionKind::getMetadata());
Evan Cheng76792992011-07-20 05:58:47 +0000[diff] [blame]503 DwarfPubTypesSection =
504 Ctx->getELFSection(".debug_pubtypes", ELF::SHT_PROGBITS, 0,
505 SectionKind::getMetadata());
Eric Christopherb0e76942013-09-09 20:03:14 +0000[diff] [blame]506 DwarfGnuPubNamesSection =
507 Ctx->getELFSection(".debug_gnu_pubnames", ELF::SHT_PROGBITS, 0,
508 SectionKind::getMetadata());
509 DwarfGnuPubTypesSection =
510 Ctx->getELFSection(".debug_gnu_pubtypes", ELF::SHT_PROGBITS, 0,
511 SectionKind::getMetadata());
Evan Cheng76792992011-07-20 05:58:47 +0000[diff] [blame]512 DwarfStrSection =
Nick Lewycky1a62d782011-10-26 18:44:32 +0000[diff] [blame]513 Ctx->getELFSection(".debug_str", ELF::SHT_PROGBITS,
514 ELF::SHF_MERGE | ELF::SHF_STRINGS,
515 SectionKind::getMergeable1ByteCString());
Evan Cheng76792992011-07-20 05:58:47 +0000[diff] [blame]516 DwarfLocSection =
517 Ctx->getELFSection(".debug_loc", ELF::SHT_PROGBITS, 0,
518 SectionKind::getMetadata());
519 DwarfARangesSection =
520 Ctx->getELFSection(".debug_aranges", ELF::SHT_PROGBITS, 0,
521 SectionKind::getMetadata());
522 DwarfRangesSection =
523 Ctx->getELFSection(".debug_ranges", ELF::SHT_PROGBITS, 0,
524 SectionKind::getMetadata());
525 DwarfMacroInfoSection =
526 Ctx->getELFSection(".debug_macinfo", ELF::SHT_PROGBITS, 0,
527 SectionKind::getMetadata());
Eric Christopher27ed8ec2012-11-28 02:49:34 +0000[diff] [blame]528
529 // DWARF5 Experimental Debug Info
530
531 // Accelerator Tables
Eric Christophera0ad67d2012-10-08 21:41:30 +0000[diff] [blame]532 DwarfAccelNamesSection =
533 Ctx->getELFSection(".apple_names", ELF::SHT_PROGBITS, 0,
534 SectionKind::getMetadata());
535 DwarfAccelObjCSection =
536 Ctx->getELFSection(".apple_objc", ELF::SHT_PROGBITS, 0,
537 SectionKind::getMetadata());
538 DwarfAccelNamespaceSection =
539 Ctx->getELFSection(".apple_namespaces", ELF::SHT_PROGBITS, 0,
540 SectionKind::getMetadata());
541 DwarfAccelTypesSection =
542 Ctx->getELFSection(".apple_types", ELF::SHT_PROGBITS, 0,
543 SectionKind::getMetadata());
Eric Christopherc3b434b2012-11-28 02:49:38 +0000[diff] [blame]544
545 // Fission Sections
546 DwarfInfoDWOSection =
547 Ctx->getELFSection(".debug_info.dwo", ELF::SHT_PROGBITS, 0,
548 SectionKind::getMetadata());
Eric Christopher3c230092012-11-30 06:47:06 +0000[diff] [blame]549 DwarfAbbrevDWOSection =
550 Ctx->getELFSection(".debug_abbrev.dwo", ELF::SHT_PROGBITS, 0,
551 SectionKind::getMetadata());
552 DwarfStrDWOSection =
553 Ctx->getELFSection(".debug_str.dwo", ELF::SHT_PROGBITS,
554 ELF::SHF_MERGE | ELF::SHF_STRINGS,
555 SectionKind::getMergeable1ByteCString());
556 DwarfLineDWOSection =
557 Ctx->getELFSection(".debug_line.dwo", ELF::SHT_PROGBITS, 0,
558 SectionKind::getMetadata());
559 DwarfLocDWOSection =
560 Ctx->getELFSection(".debug_loc.dwo", ELF::SHT_PROGBITS, 0,
561 SectionKind::getMetadata());
Eric Christopherc0fa8672013-01-04 17:59:22 +0000[diff] [blame]562 DwarfStrOffDWOSection =
563 Ctx->getELFSection(".debug_str_offsets.dwo", ELF::SHT_PROGBITS, 0,
564 SectionKind::getMetadata());
Eric Christopher962c9082013-01-15 23:56:56 +0000[diff] [blame]565 DwarfAddrSection =
566 Ctx->getELFSection(".debug_addr", ELF::SHT_PROGBITS, 0,
567 SectionKind::getMetadata());
Evan Cheng76792992011-07-20 05:58:47 +0000[diff] [blame]568}
569
570
571void MCObjectFileInfo::InitCOFFMCObjectFileInfo(Triple T) {
David Majnemera9bdb322014-04-08 22:33:40 +0000[diff] [blame]572 // The object file format cannot represent common symbols with explicit
573 // alignments.
574 CommDirectiveSupportsAlignment = false;
575
Evan Cheng76792992011-07-20 05:58:47 +0000[diff] [blame]576 // COFF
David Majnemer3d96acb2013-08-13 01:23:53 +0000[diff] [blame]577 BSSSection =
578 Ctx->getCOFFSection(".bss",
579 COFF::IMAGE_SCN_CNT_UNINITIALIZED_DATA |
580 COFF::IMAGE_SCN_MEM_READ |
581 COFF::IMAGE_SCN_MEM_WRITE,
582 SectionKind::getBSS());
Evan Cheng76792992011-07-20 05:58:47 +0000[diff] [blame]583 TextSection =
584 Ctx->getCOFFSection(".text",
585 COFF::IMAGE_SCN_CNT_CODE |
586 COFF::IMAGE_SCN_MEM_EXECUTE |
587 COFF::IMAGE_SCN_MEM_READ,
588 SectionKind::getText());
589 DataSection =
590 Ctx->getCOFFSection(".data",
591 COFF::IMAGE_SCN_CNT_INITIALIZED_DATA |
592 COFF::IMAGE_SCN_MEM_READ |
593 COFF::IMAGE_SCN_MEM_WRITE,
594 SectionKind::getDataRel());
595 ReadOnlySection =
596 Ctx->getCOFFSection(".rdata",
597 COFF::IMAGE_SCN_CNT_INITIALIZED_DATA |
598 COFF::IMAGE_SCN_MEM_READ,
599 SectionKind::getReadOnly());
Saleem Abdulrasoola35f04a2014-06-08 00:34:23 +0000[diff] [blame]600
Saleem Abdulrasooled7fc4b2014-06-08 00:34:27 +0000[diff] [blame^]601 if (T.isKnownWindowsMSVCEnvironment() || T.isWindowsItaniumEnvironment()) {
Michael J. Spencerb560d072012-02-23 21:56:08 +0000[diff] [blame]602 StaticCtorSection =
603 Ctx->getCOFFSection(".CRT$XCU",
604 COFF::IMAGE_SCN_CNT_INITIALIZED_DATA |
605 COFF::IMAGE_SCN_MEM_READ,
606 SectionKind::getReadOnly());
Saleem Abdulrasoola35f04a2014-06-08 00:34:23 +0000[diff] [blame]607 StaticDtorSection =
608 Ctx->getCOFFSection(".CRT$XTX",
609 COFF::IMAGE_SCN_CNT_INITIALIZED_DATA |
610 COFF::IMAGE_SCN_MEM_READ,
611 SectionKind::getReadOnly());
Michael J. Spencerb560d072012-02-23 21:56:08 +0000[diff] [blame]612 } else {
613 StaticCtorSection =
614 Ctx->getCOFFSection(".ctors",
615 COFF::IMAGE_SCN_CNT_INITIALIZED_DATA |
616 COFF::IMAGE_SCN_MEM_READ |
617 COFF::IMAGE_SCN_MEM_WRITE,
618 SectionKind::getDataRel());
Anton Korobeynikov37d73002012-09-23 15:53:47 +0000[diff] [blame]619 StaticDtorSection =
620 Ctx->getCOFFSection(".dtors",
621 COFF::IMAGE_SCN_CNT_INITIALIZED_DATA |
622 COFF::IMAGE_SCN_MEM_READ |
623 COFF::IMAGE_SCN_MEM_WRITE,
624 SectionKind::getDataRel());
625 }
Evan Cheng76792992011-07-20 05:58:47 +0000[diff] [blame]626
627 // FIXME: We're emitting LSDA info into a readonly section on COFF, even
628 // though it contains relocatable pointers. In PIC mode, this is probably a
629 // big runtime hit for C++ apps. Either the contents of the LSDA need to be
630 // adjusted or this should be a data section.
Kai Nacke42097302013-07-08 04:43:23 +0000[diff] [blame]631 LSDASection =
632 Ctx->getCOFFSection(".gcc_except_table",
633 COFF::IMAGE_SCN_CNT_INITIALIZED_DATA |
634 COFF::IMAGE_SCN_MEM_READ,
635 SectionKind::getReadOnly());
Evan Cheng76792992011-07-20 05:58:47 +0000[diff] [blame]636
637 // Debug info.
Timur Iskhodzhanov31377c52014-01-28 03:48:44 +0000[diff] [blame]638 COFFDebugSymbolsSection =
639 Ctx->getCOFFSection(".debug$S",
640 COFF::IMAGE_SCN_MEM_DISCARDABLE |
641 COFF::IMAGE_SCN_CNT_INITIALIZED_DATA |
642 COFF::IMAGE_SCN_MEM_READ,
643 SectionKind::getMetadata());
644
Evan Cheng76792992011-07-20 05:58:47 +0000[diff] [blame]645 DwarfAbbrevSection =
646 Ctx->getCOFFSection(".debug_abbrev",
647 COFF::IMAGE_SCN_MEM_DISCARDABLE |
648 COFF::IMAGE_SCN_MEM_READ,
649 SectionKind::getMetadata());
650 DwarfInfoSection =
651 Ctx->getCOFFSection(".debug_info",
652 COFF::IMAGE_SCN_MEM_DISCARDABLE |
653 COFF::IMAGE_SCN_MEM_READ,
654 SectionKind::getMetadata());
655 DwarfLineSection =
656 Ctx->getCOFFSection(".debug_line",
657 COFF::IMAGE_SCN_MEM_DISCARDABLE |
658 COFF::IMAGE_SCN_MEM_READ,
659 SectionKind::getMetadata());
660 DwarfFrameSection =
661 Ctx->getCOFFSection(".debug_frame",
662 COFF::IMAGE_SCN_MEM_DISCARDABLE |
663 COFF::IMAGE_SCN_MEM_READ,
664 SectionKind::getMetadata());
Krzysztof Parzyszek228daa62013-02-12 18:00:14 +0000[diff] [blame]665 DwarfPubNamesSection =
666 Ctx->getCOFFSection(".debug_pubnames",
667 COFF::IMAGE_SCN_MEM_DISCARDABLE |
668 COFF::IMAGE_SCN_MEM_READ,
669 SectionKind::getMetadata());
Evan Cheng76792992011-07-20 05:58:47 +0000[diff] [blame]670 DwarfPubTypesSection =
671 Ctx->getCOFFSection(".debug_pubtypes",
672 COFF::IMAGE_SCN_MEM_DISCARDABLE |
673 COFF::IMAGE_SCN_MEM_READ,
674 SectionKind::getMetadata());
NAKAMURA Takumi0229e352013-09-10 06:01:56 +0000[diff] [blame]675 DwarfGnuPubNamesSection =
Eric Christopherb0e76942013-09-09 20:03:14 +0000[diff] [blame]676 Ctx->getCOFFSection(".debug_gnu_pubnames",
677 COFF::IMAGE_SCN_MEM_DISCARDABLE |
678 COFF::IMAGE_SCN_MEM_READ,
679 SectionKind::getMetadata());
NAKAMURA Takumi0229e352013-09-10 06:01:56 +0000[diff] [blame]680 DwarfGnuPubTypesSection =
Eric Christopherb0e76942013-09-09 20:03:14 +0000[diff] [blame]681 Ctx->getCOFFSection(".debug_gnu_pubtypes",
682 COFF::IMAGE_SCN_MEM_DISCARDABLE |
683 COFF::IMAGE_SCN_MEM_READ,
684 SectionKind::getMetadata());
Evan Cheng76792992011-07-20 05:58:47 +0000[diff] [blame]685 DwarfStrSection =
686 Ctx->getCOFFSection(".debug_str",
687 COFF::IMAGE_SCN_MEM_DISCARDABLE |
688 COFF::IMAGE_SCN_MEM_READ,
689 SectionKind::getMetadata());
690 DwarfLocSection =
691 Ctx->getCOFFSection(".debug_loc",
692 COFF::IMAGE_SCN_MEM_DISCARDABLE |
693 COFF::IMAGE_SCN_MEM_READ,
694 SectionKind::getMetadata());
695 DwarfARangesSection =
696 Ctx->getCOFFSection(".debug_aranges",
697 COFF::IMAGE_SCN_MEM_DISCARDABLE |
698 COFF::IMAGE_SCN_MEM_READ,
699 SectionKind::getMetadata());
700 DwarfRangesSection =
701 Ctx->getCOFFSection(".debug_ranges",
702 COFF::IMAGE_SCN_MEM_DISCARDABLE |
703 COFF::IMAGE_SCN_MEM_READ,
704 SectionKind::getMetadata());
705 DwarfMacroInfoSection =
706 Ctx->getCOFFSection(".debug_macinfo",
707 COFF::IMAGE_SCN_MEM_DISCARDABLE |
708 COFF::IMAGE_SCN_MEM_READ,
709 SectionKind::getMetadata());
David Blaikie62dd7df2014-03-26 03:05:10 +0000[diff] [blame]710 DwarfInfoDWOSection =
Saleem Abdulrasoola35f04a2014-06-08 00:34:23 +0000[diff] [blame]711 Ctx->getCOFFSection(".debug_info.dwo",
712 COFF::IMAGE_SCN_MEM_DISCARDABLE |
713 COFF::IMAGE_SCN_MEM_READ,
David Blaikie62dd7df2014-03-26 03:05:10 +0000[diff] [blame]714 SectionKind::getMetadata());
715 DwarfAbbrevDWOSection =
Saleem Abdulrasoola35f04a2014-06-08 00:34:23 +0000[diff] [blame]716 Ctx->getCOFFSection(".debug_abbrev.dwo",
717 COFF::IMAGE_SCN_MEM_DISCARDABLE |
718 COFF::IMAGE_SCN_MEM_READ,
David Blaikie62dd7df2014-03-26 03:05:10 +0000[diff] [blame]719 SectionKind::getMetadata());
720 DwarfStrDWOSection =
Saleem Abdulrasoola35f04a2014-06-08 00:34:23 +0000[diff] [blame]721 Ctx->getCOFFSection(".debug_str.dwo",
722 COFF::IMAGE_SCN_MEM_DISCARDABLE |
723 COFF::IMAGE_SCN_MEM_READ,
David Blaikie62dd7df2014-03-26 03:05:10 +0000[diff] [blame]724 SectionKind::getMetadata());
725 DwarfLineDWOSection =
Saleem Abdulrasoola35f04a2014-06-08 00:34:23 +0000[diff] [blame]726 Ctx->getCOFFSection(".debug_line.dwo",
727 COFF::IMAGE_SCN_MEM_DISCARDABLE |
728 COFF::IMAGE_SCN_MEM_READ,
David Blaikie62dd7df2014-03-26 03:05:10 +0000[diff] [blame]729 SectionKind::getMetadata());
730 DwarfLocDWOSection =
Saleem Abdulrasoola35f04a2014-06-08 00:34:23 +0000[diff] [blame]731 Ctx->getCOFFSection(".debug_loc.dwo",
732 COFF::IMAGE_SCN_MEM_DISCARDABLE |
733 COFF::IMAGE_SCN_MEM_READ,
David Blaikie62dd7df2014-03-26 03:05:10 +0000[diff] [blame]734 SectionKind::getMetadata());
735 DwarfStrOffDWOSection =
Saleem Abdulrasoola35f04a2014-06-08 00:34:23 +0000[diff] [blame]736 Ctx->getCOFFSection(".debug_str_offsets.dwo",
737 COFF::IMAGE_SCN_MEM_DISCARDABLE |
738 COFF::IMAGE_SCN_MEM_READ,
David Blaikie62dd7df2014-03-26 03:05:10 +0000[diff] [blame]739 SectionKind::getMetadata());
Saleem Abdulrasoola35f04a2014-06-08 00:34:23 +0000[diff] [blame]740
741 DwarfAddrSection =
742 Ctx->getCOFFSection(".debug_addr",
743 COFF::IMAGE_SCN_MEM_DISCARDABLE |
744 COFF::IMAGE_SCN_MEM_READ,
745 SectionKind::getMetadata());
Evan Cheng76792992011-07-20 05:58:47 +0000[diff] [blame]746
747 DrectveSection =
748 Ctx->getCOFFSection(".drectve",
Saleem Abdulrasoola35f04a2014-06-08 00:34:23 +0000[diff] [blame]749 COFF::IMAGE_SCN_LNK_INFO |
750 COFF::IMAGE_SCN_LNK_REMOVE,
Evan Cheng76792992011-07-20 05:58:47 +0000[diff] [blame]751 SectionKind::getMetadata());
752
753 PDataSection =
754 Ctx->getCOFFSection(".pdata",
755 COFF::IMAGE_SCN_CNT_INITIALIZED_DATA |
Anton Korobeynikovcc8c5392012-08-08 12:46:46 +0000[diff] [blame]756 COFF::IMAGE_SCN_MEM_READ,
Evan Cheng76792992011-07-20 05:58:47 +0000[diff] [blame]757 SectionKind::getDataRel());
758
759 XDataSection =
760 Ctx->getCOFFSection(".xdata",
761 COFF::IMAGE_SCN_CNT_INITIALIZED_DATA |
Anton Korobeynikovcc8c5392012-08-08 12:46:46 +0000[diff] [blame]762 COFF::IMAGE_SCN_MEM_READ,
Evan Cheng76792992011-07-20 05:58:47 +0000[diff] [blame]763 SectionKind::getDataRel());
Saleem Abdulrasoola35f04a2014-06-08 00:34:23 +0000[diff] [blame]764
Anton Korobeynikovc6b40172012-02-11 17:26:53 +0000[diff] [blame]765 TLSDataSection =
766 Ctx->getCOFFSection(".tls$",
767 COFF::IMAGE_SCN_CNT_INITIALIZED_DATA |
768 COFF::IMAGE_SCN_MEM_READ |
769 COFF::IMAGE_SCN_MEM_WRITE,
770 SectionKind::getDataRel());
Evan Cheng76792992011-07-20 05:58:47 +0000[diff] [blame]771}
772
773void MCObjectFileInfo::InitMCObjectFileInfo(StringRef TT, Reloc::Model relocm,
Evan Chengbbf3b0d2011-07-20 19:50:42 +0000[diff] [blame]774 CodeModel::Model cm,
Evan Cheng76792992011-07-20 05:58:47 +0000[diff] [blame]775 MCContext &ctx) {
776 RelocM = relocm;
Evan Chengbbf3b0d2011-07-20 19:50:42 +0000[diff] [blame]777 CMModel = cm;
Evan Cheng76792992011-07-20 05:58:47 +0000[diff] [blame]778 Ctx = &ctx;
779
780 // Common.
781 CommDirectiveSupportsAlignment = true;
782 SupportsWeakOmittedEHFrame = true;
783 IsFunctionEHFrameSymbolPrivate = true;
Tim Northoverd1c6f512014-03-29 09:03:13 +0000[diff] [blame]784 SupportsCompactUnwindWithoutEHFrame = false;
Evan Chengbbf3b0d2011-07-20 19:50:42 +0000[diff] [blame]785
Rafael Espindolaaa7851d2014-05-12 13:47:05 +0000[diff] [blame]786 PersonalityEncoding = LSDAEncoding = FDECFIEncoding = TTypeEncoding =
787 dwarf::DW_EH_PE_absptr;
Evan Chengbbf3b0d2011-07-20 19:50:42 +0000[diff] [blame]788
Bill Wendling2d1df6b2013-04-10 21:42:06 +0000[diff] [blame]789 CompactUnwindDwarfEHFrameOnly = 0;
790
Craig Topperbb694de2014-04-13 04:57:38 +0000[diff] [blame]791 EHFrameSection = nullptr; // Created on demand.
792 CompactUnwindSection = nullptr; // Used only by selected targets.
793 DwarfAccelNamesSection = nullptr; // Used only by selected targets.
794 DwarfAccelObjCSection = nullptr; // Used only by selected targets.
795 DwarfAccelNamespaceSection = nullptr; // Used only by selected targets.
796 DwarfAccelTypesSection = nullptr; // Used only by selected targets.
Evan Cheng76792992011-07-20 05:58:47 +0000[diff] [blame]797
798 Triple T(TT);
799 Triple::ArchType Arch = T.getArch();
800 // FIXME: Checking for Arch here to filter out bogus triples such as
801 // cellspu-apple-darwin. Perhaps we should fix in Triple?
802 if ((Arch == Triple::x86 || Arch == Triple::x86_64 ||
803 Arch == Triple::arm || Arch == Triple::thumb ||
Tim Northover3b0846e2014-05-24 12:50:23 +0000[diff] [blame]804 Arch == Triple::arm64 || Arch == Triple::aarch64 ||
Evan Cheng76792992011-07-20 05:58:47 +0000[diff] [blame]805 Arch == Triple::ppc || Arch == Triple::ppc64 ||
806 Arch == Triple::UnknownArch) &&
Saleem Abdulrasool35476332014-03-06 20:47:11 +0000[diff] [blame]807 (T.isOSDarwin() || T.isOSBinFormatMachO())) {
Evan Cheng76792992011-07-20 05:58:47 +0000[diff] [blame]808 Env = IsMachO;
809 InitMachOMCObjectFileInfo(T);
Saleem Abdulrasoolffdb92a702014-04-27 04:54:16 +0000[diff] [blame]810 } else if ((Arch == Triple::x86 || Arch == Triple::x86_64 ||
811 Arch == Triple::arm || Arch == Triple::thumb) &&
812 (T.isOSWindows() && T.getObjectFormat() == Triple::COFF)) {
Evan Cheng76792992011-07-20 05:58:47 +0000[diff] [blame]813 Env = IsCOFF;
814 InitCOFFMCObjectFileInfo(T);
815 } else {
816 Env = IsELF;
817 InitELFMCObjectFileInfo(T);
818 }
819}
820
David Blaikiebc563272013-12-13 21:33:40 +0000[diff] [blame]821const MCSection *MCObjectFileInfo::getDwarfTypesSection(uint64_t Hash) const {
822 return Ctx->getELFSection(".debug_types", ELF::SHT_PROGBITS, ELF::SHF_GROUP,
823 SectionKind::getMetadata(), 0, utostr(Hash));
824}
825
David Blaikie2da282b2014-05-21 23:27:41 +0000[diff] [blame]826const MCSection *
827MCObjectFileInfo::getDwarfTypesDWOSection(uint64_t Hash) const {
828 return Ctx->getELFSection(".debug_types.dwo", ELF::SHT_PROGBITS,
829 ELF::SHF_GROUP, SectionKind::getMetadata(), 0,
830 utostr(Hash));
831}
832
David Chisnall85dd3092012-02-17 16:51:02 +0000[diff] [blame]833void MCObjectFileInfo::InitEHFrameSection() {
834 if (Env == IsMachO)
835 EHFrameSection =
836 Ctx->getMachOSection("__TEXT", "__eh_frame",
David Majnemer7b583052014-03-07 07:36:05 +0000[diff] [blame]837 MachO::S_COALESCED |
838 MachO::S_ATTR_NO_TOC |
839 MachO::S_ATTR_STRIP_STATIC_SYMS |
840 MachO::S_ATTR_LIVE_SUPPORT,
David Chisnall85dd3092012-02-17 16:51:02 +0000[diff] [blame]841 SectionKind::getReadOnly());
842 else if (Env == IsELF)
843 EHFrameSection =
David Chisnallbbec8722012-04-10 11:44:33 +0000[diff] [blame]844 Ctx->getELFSection(".eh_frame", EHSectionType,
David Chisnall07f8d3e2012-02-17 17:31:15 +0000[diff] [blame]845 EHSectionFlags,
David Chisnall85dd3092012-02-17 16:51:02 +0000[diff] [blame]846 SectionKind::getDataRel());
847 else
848 EHFrameSection =
849 Ctx->getCOFFSection(".eh_frame",
850 COFF::IMAGE_SCN_CNT_INITIALIZED_DATA |
851 COFF::IMAGE_SCN_MEM_READ |
852 COFF::IMAGE_SCN_MEM_WRITE,
853 SectionKind::getDataRel());
854}