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Evan Cheng76792992011-07-20 05:58:47 +00001//===-- 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 +000011#include "llvm/ADT/StringExtras.h"
Chandler Carruth8a8cd2b2014-01-07 11:48:04 +000012#include "llvm/ADT/Triple.h"
Joerg Sonnenberger94cbb662014-05-13 17:58:13 +000013#include "llvm/MC/MCAsmInfo.h"
Evan Cheng76792992011-07-20 05:58:47 +000014#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 +000019using namespace llvm;
20
Rafael Espindolabecdf632014-06-20 22:37:01 +000021static bool useCompactUnwind(const Triple &T) {
22 // Only on darwin.
23 if (!T.isOSDarwin())
24 return false;
25
26 // aarch64 always has it.
Tim Northovere19bed72014-07-23 12:32:47 +000027 if (T.getArch() == Triple::aarch64)
Rafael Espindolabecdf632014-06-20 22:37:01 +000028 return true;
29
30 // Use it on newer version of OS X.
31 if (T.isMacOSX() && !T.isMacOSXVersionLT(10, 6))
32 return true;
33
Rafael Espindolac3510c72014-06-20 22:40:55 +000034 // And the iOS simulator.
35 if (T.isiOS() &&
36 (T.getArch() == Triple::x86_64 || T.getArch() == Triple::x86))
37 return true;
38
Rafael Espindolabecdf632014-06-20 22:37:01 +000039 return false;
40}
41
Evan Cheng76792992011-07-20 05:58:47 +000042void MCObjectFileInfo::InitMachOMCObjectFileInfo(Triple T) {
43 // MachO
Evan Cheng76792992011-07-20 05:58:47 +000044 SupportsWeakOmittedEHFrame = false;
45
Tim Northovere19bed72014-07-23 12:32:47 +000046 if (T.isOSDarwin() && T.getArch() == Triple::aarch64)
Tim Northover00ed9962014-03-29 10:18:08 +000047 SupportsCompactUnwindWithoutEHFrame = true;
48
Evan Chengbbf3b0d2011-07-20 19:50:42 +000049 PersonalityEncoding = dwarf::DW_EH_PE_indirect | dwarf::DW_EH_PE_pcrel
50 | dwarf::DW_EH_PE_sdata4;
Rafael Espindolaaa7851d2014-05-12 13:47:05 +000051 LSDAEncoding = FDECFIEncoding = dwarf::DW_EH_PE_pcrel;
Evan Chengbbf3b0d2011-07-20 19:50:42 +000052 TTypeEncoding = dwarf::DW_EH_PE_indirect | dwarf::DW_EH_PE_pcrel |
53 dwarf::DW_EH_PE_sdata4;
54
Evan Cheng76792992011-07-20 05:58:47 +000055 // .comm doesn't support alignment before Leopard.
56 if (T.isMacOSX() && T.isMacOSXVersionLT(10, 5))
57 CommDirectiveSupportsAlignment = false;
58
59 TextSection // .text
60 = Ctx->getMachOSection("__TEXT", "__text",
David Majnemer7b583052014-03-07 07:36:05 +000061 MachO::S_ATTR_PURE_INSTRUCTIONS,
Evan Cheng76792992011-07-20 05:58:47 +000062 SectionKind::getText());
63 DataSection // .data
64 = Ctx->getMachOSection("__DATA", "__data", 0,
65 SectionKind::getDataRel());
66
NAKAMURA Takumi68fa6f92013-09-21 02:34:45 +000067 // BSSSection might not be expected initialized on msvc.
Craig Topperbb694de2014-04-13 04:57:38 +000068 BSSSection = nullptr;
NAKAMURA Takumi68fa6f92013-09-21 02:34:45 +000069
Evan Cheng76792992011-07-20 05:58:47 +000070 TLSDataSection // .tdata
71 = Ctx->getMachOSection("__DATA", "__thread_data",
David Majnemer7b583052014-03-07 07:36:05 +000072 MachO::S_THREAD_LOCAL_REGULAR,
Evan Cheng76792992011-07-20 05:58:47 +000073 SectionKind::getDataRel());
74 TLSBSSSection // .tbss
75 = Ctx->getMachOSection("__DATA", "__thread_bss",
David Majnemer7b583052014-03-07 07:36:05 +000076 MachO::S_THREAD_LOCAL_ZEROFILL,
Evan Cheng76792992011-07-20 05:58:47 +000077 SectionKind::getThreadBSS());
78
79 // TODO: Verify datarel below.
80 TLSTLVSection // .tlv
81 = Ctx->getMachOSection("__DATA", "__thread_vars",
David Majnemer7b583052014-03-07 07:36:05 +000082 MachO::S_THREAD_LOCAL_VARIABLES,
Evan Cheng76792992011-07-20 05:58:47 +000083 SectionKind::getDataRel());
84
85 TLSThreadInitSection
86 = Ctx->getMachOSection("__DATA", "__thread_init",
David Majnemer7b583052014-03-07 07:36:05 +000087 MachO::S_THREAD_LOCAL_INIT_FUNCTION_POINTERS,
Jim Grosbach0dde3492011-11-15 16:46:22 +000088 SectionKind::getDataRel());
Evan Cheng76792992011-07-20 05:58:47 +000089
90 CStringSection // .cstring
91 = Ctx->getMachOSection("__TEXT", "__cstring",
David Majnemer7b583052014-03-07 07:36:05 +000092 MachO::S_CSTRING_LITERALS,
Evan Cheng76792992011-07-20 05:58:47 +000093 SectionKind::getMergeable1ByteCString());
94 UStringSection
95 = Ctx->getMachOSection("__TEXT","__ustring", 0,
96 SectionKind::getMergeable2ByteCString());
97 FourByteConstantSection // .literal4
98 = Ctx->getMachOSection("__TEXT", "__literal4",
David Majnemer7b583052014-03-07 07:36:05 +000099 MachO::S_4BYTE_LITERALS,
Evan Cheng76792992011-07-20 05:58:47 +0000100 SectionKind::getMergeableConst4());
101 EightByteConstantSection // .literal8
102 = Ctx->getMachOSection("__TEXT", "__literal8",
David Majnemer7b583052014-03-07 07:36:05 +0000103 MachO::S_8BYTE_LITERALS,
Evan Cheng76792992011-07-20 05:58:47 +0000104 SectionKind::getMergeableConst8());
105
Rafael Espindola1f3de492014-02-13 23:16:11 +0000106 SixteenByteConstantSection // .literal16
107 = Ctx->getMachOSection("__TEXT", "__literal16",
David Majnemer7b583052014-03-07 07:36:05 +0000108 MachO::S_16BYTE_LITERALS,
Rafael Espindola1f3de492014-02-13 23:16:11 +0000109 SectionKind::getMergeableConst16());
Evan Cheng76792992011-07-20 05:58:47 +0000110
111 ReadOnlySection // .const
112 = Ctx->getMachOSection("__TEXT", "__const", 0,
113 SectionKind::getReadOnly());
114
115 TextCoalSection
116 = Ctx->getMachOSection("__TEXT", "__textcoal_nt",
David Majnemer7b583052014-03-07 07:36:05 +0000117 MachO::S_COALESCED |
118 MachO::S_ATTR_PURE_INSTRUCTIONS,
Evan Cheng76792992011-07-20 05:58:47 +0000119 SectionKind::getText());
120 ConstTextCoalSection
121 = Ctx->getMachOSection("__TEXT", "__const_coal",
David Majnemer7b583052014-03-07 07:36:05 +0000122 MachO::S_COALESCED,
Evan Cheng76792992011-07-20 05:58:47 +0000123 SectionKind::getReadOnly());
124 ConstDataSection // .const_data
125 = Ctx->getMachOSection("__DATA", "__const", 0,
126 SectionKind::getReadOnlyWithRel());
127 DataCoalSection
128 = Ctx->getMachOSection("__DATA","__datacoal_nt",
David Majnemer7b583052014-03-07 07:36:05 +0000129 MachO::S_COALESCED,
Evan Cheng76792992011-07-20 05:58:47 +0000130 SectionKind::getDataRel());
131 DataCommonSection
132 = Ctx->getMachOSection("__DATA","__common",
David Majnemer7b583052014-03-07 07:36:05 +0000133 MachO::S_ZEROFILL,
Evan Cheng76792992011-07-20 05:58:47 +0000134 SectionKind::getBSS());
135 DataBSSSection
David Majnemer7b583052014-03-07 07:36:05 +0000136 = Ctx->getMachOSection("__DATA","__bss", MachO::S_ZEROFILL,
Evan Cheng76792992011-07-20 05:58:47 +0000137 SectionKind::getBSS());
138
139
140 LazySymbolPointerSection
141 = Ctx->getMachOSection("__DATA", "__la_symbol_ptr",
David Majnemer7b583052014-03-07 07:36:05 +0000142 MachO::S_LAZY_SYMBOL_POINTERS,
Evan Cheng76792992011-07-20 05:58:47 +0000143 SectionKind::getMetadata());
144 NonLazySymbolPointerSection
145 = Ctx->getMachOSection("__DATA", "__nl_symbol_ptr",
David Majnemer7b583052014-03-07 07:36:05 +0000146 MachO::S_NON_LAZY_SYMBOL_POINTERS,
Evan Cheng76792992011-07-20 05:58:47 +0000147 SectionKind::getMetadata());
148
149 if (RelocM == Reloc::Static) {
150 StaticCtorSection
151 = Ctx->getMachOSection("__TEXT", "__constructor", 0,
152 SectionKind::getDataRel());
153 StaticDtorSection
154 = Ctx->getMachOSection("__TEXT", "__destructor", 0,
155 SectionKind::getDataRel());
156 } else {
157 StaticCtorSection
158 = Ctx->getMachOSection("__DATA", "__mod_init_func",
David Majnemer7b583052014-03-07 07:36:05 +0000159 MachO::S_MOD_INIT_FUNC_POINTERS,
Evan Cheng76792992011-07-20 05:58:47 +0000160 SectionKind::getDataRel());
161 StaticDtorSection
162 = Ctx->getMachOSection("__DATA", "__mod_term_func",
David Majnemer7b583052014-03-07 07:36:05 +0000163 MachO::S_MOD_TERM_FUNC_POINTERS,
Evan Cheng76792992011-07-20 05:58:47 +0000164 SectionKind::getDataRel());
165 }
166
167 // Exception Handling.
168 LSDASection = Ctx->getMachOSection("__TEXT", "__gcc_except_tab", 0,
169 SectionKind::getReadOnlyWithRel());
170
Craig Topperbb694de2014-04-13 04:57:38 +0000171 COFFDebugSymbolsSection = nullptr;
Timur Iskhodzhanovf166f6c2014-01-30 01:39:17 +0000172
Rafael Espindolabecdf632014-06-20 22:37:01 +0000173 if (useCompactUnwind(T)) {
Evan Cheng76792992011-07-20 05:58:47 +0000174 CompactUnwindSection =
Rafael Espindolabecdf632014-06-20 22:37:01 +0000175 Ctx->getMachOSection("__LD", "__compact_unwind", MachO::S_ATTR_DEBUG,
176 SectionKind::getReadOnly());
Evan Cheng76792992011-07-20 05:58:47 +0000177
Bill Wendling2d1df6b2013-04-10 21:42:06 +0000178 if (T.getArch() == Triple::x86_64 || T.getArch() == Triple::x86)
179 CompactUnwindDwarfEHFrameOnly = 0x04000000;
Tim Northovere19bed72014-07-23 12:32:47 +0000180 else if (T.getArch() == Triple::aarch64)
Tim Northover00ed9962014-03-29 10:18:08 +0000181 CompactUnwindDwarfEHFrameOnly = 0x03000000;
Bill Wendling2d1df6b2013-04-10 21:42:06 +0000182 }
183
Evan Cheng76792992011-07-20 05:58:47 +0000184 // Debug Information.
Eric Christopher4996c702011-11-07 09:24:32 +0000185 DwarfAccelNamesSection =
186 Ctx->getMachOSection("__DWARF", "__apple_names",
David Majnemer7b583052014-03-07 07:36:05 +0000187 MachO::S_ATTR_DEBUG,
Eric Christopher4996c702011-11-07 09:24:32 +0000188 SectionKind::getMetadata());
189 DwarfAccelObjCSection =
190 Ctx->getMachOSection("__DWARF", "__apple_objc",
David Majnemer7b583052014-03-07 07:36:05 +0000191 MachO::S_ATTR_DEBUG,
Eric Christopher4996c702011-11-07 09:24:32 +0000192 SectionKind::getMetadata());
193 // 16 character section limit...
194 DwarfAccelNamespaceSection =
195 Ctx->getMachOSection("__DWARF", "__apple_namespac",
David Majnemer7b583052014-03-07 07:36:05 +0000196 MachO::S_ATTR_DEBUG,
Eric Christopher4996c702011-11-07 09:24:32 +0000197 SectionKind::getMetadata());
198 DwarfAccelTypesSection =
199 Ctx->getMachOSection("__DWARF", "__apple_types",
David Majnemer7b583052014-03-07 07:36:05 +0000200 MachO::S_ATTR_DEBUG,
Eric Christopher4996c702011-11-07 09:24:32 +0000201 SectionKind::getMetadata());
Jim Grosbachdc1e36e2012-05-11 01:41:30 +0000202
Evan Cheng76792992011-07-20 05:58:47 +0000203 DwarfAbbrevSection =
204 Ctx->getMachOSection("__DWARF", "__debug_abbrev",
David Majnemer7b583052014-03-07 07:36:05 +0000205 MachO::S_ATTR_DEBUG,
Evan Cheng76792992011-07-20 05:58:47 +0000206 SectionKind::getMetadata());
207 DwarfInfoSection =
208 Ctx->getMachOSection("__DWARF", "__debug_info",
David Majnemer7b583052014-03-07 07:36:05 +0000209 MachO::S_ATTR_DEBUG,
Evan Cheng76792992011-07-20 05:58:47 +0000210 SectionKind::getMetadata());
211 DwarfLineSection =
212 Ctx->getMachOSection("__DWARF", "__debug_line",
David Majnemer7b583052014-03-07 07:36:05 +0000213 MachO::S_ATTR_DEBUG,
Evan Cheng76792992011-07-20 05:58:47 +0000214 SectionKind::getMetadata());
215 DwarfFrameSection =
216 Ctx->getMachOSection("__DWARF", "__debug_frame",
David Majnemer7b583052014-03-07 07:36:05 +0000217 MachO::S_ATTR_DEBUG,
Evan Cheng76792992011-07-20 05:58:47 +0000218 SectionKind::getMetadata());
Krzysztof Parzyszek228daa62013-02-12 18:00:14 +0000219 DwarfPubNamesSection =
220 Ctx->getMachOSection("__DWARF", "__debug_pubnames",
David Majnemer7b583052014-03-07 07:36:05 +0000221 MachO::S_ATTR_DEBUG,
Krzysztof Parzyszek228daa62013-02-12 18:00:14 +0000222 SectionKind::getMetadata());
Evan Cheng76792992011-07-20 05:58:47 +0000223 DwarfPubTypesSection =
224 Ctx->getMachOSection("__DWARF", "__debug_pubtypes",
David Majnemer7b583052014-03-07 07:36:05 +0000225 MachO::S_ATTR_DEBUG,
Evan Cheng76792992011-07-20 05:58:47 +0000226 SectionKind::getMetadata());
Eric Christopherb0e76942013-09-09 20:03:14 +0000227 DwarfGnuPubNamesSection =
228 Ctx->getMachOSection("__DWARF", "__debug_gnu_pubn",
David Majnemer7b583052014-03-07 07:36:05 +0000229 MachO::S_ATTR_DEBUG,
Eric Christopherb0e76942013-09-09 20:03:14 +0000230 SectionKind::getMetadata());
231 DwarfGnuPubTypesSection =
232 Ctx->getMachOSection("__DWARF", "__debug_gnu_pubt",
David Majnemer7b583052014-03-07 07:36:05 +0000233 MachO::S_ATTR_DEBUG,
Eric Christopherb0e76942013-09-09 20:03:14 +0000234 SectionKind::getMetadata());
Evan Cheng76792992011-07-20 05:58:47 +0000235 DwarfStrSection =
236 Ctx->getMachOSection("__DWARF", "__debug_str",
David Majnemer7b583052014-03-07 07:36:05 +0000237 MachO::S_ATTR_DEBUG,
Evan Cheng76792992011-07-20 05:58:47 +0000238 SectionKind::getMetadata());
239 DwarfLocSection =
240 Ctx->getMachOSection("__DWARF", "__debug_loc",
David Majnemer7b583052014-03-07 07:36:05 +0000241 MachO::S_ATTR_DEBUG,
Evan Cheng76792992011-07-20 05:58:47 +0000242 SectionKind::getMetadata());
243 DwarfARangesSection =
244 Ctx->getMachOSection("__DWARF", "__debug_aranges",
David Majnemer7b583052014-03-07 07:36:05 +0000245 MachO::S_ATTR_DEBUG,
Evan Cheng76792992011-07-20 05:58:47 +0000246 SectionKind::getMetadata());
247 DwarfRangesSection =
248 Ctx->getMachOSection("__DWARF", "__debug_ranges",
David Majnemer7b583052014-03-07 07:36:05 +0000249 MachO::S_ATTR_DEBUG,
Evan Cheng76792992011-07-20 05:58:47 +0000250 SectionKind::getMetadata());
251 DwarfMacroInfoSection =
252 Ctx->getMachOSection("__DWARF", "__debug_macinfo",
David Majnemer7b583052014-03-07 07:36:05 +0000253 MachO::S_ATTR_DEBUG,
Evan Cheng76792992011-07-20 05:58:47 +0000254 SectionKind::getMetadata());
255 DwarfDebugInlineSection =
256 Ctx->getMachOSection("__DWARF", "__debug_inlined",
David Majnemer7b583052014-03-07 07:36:05 +0000257 MachO::S_ATTR_DEBUG,
Evan Cheng76792992011-07-20 05:58:47 +0000258 SectionKind::getMetadata());
Lang Hames30789772013-11-08 22:14:49 +0000259 StackMapSection =
260 Ctx->getMachOSection("__LLVM_STACKMAPS", "__llvm_stackmaps", 0,
261 SectionKind::getMetadata());
Evan Cheng76792992011-07-20 05:58:47 +0000262
263 TLSExtraDataSection = TLSTLVSection;
264}
265
266void MCObjectFileInfo::InitELFMCObjectFileInfo(Triple T) {
Joerg Sonnenberger7c442522014-04-30 23:23:14 +0000267 switch (T.getArch()) {
268 case Triple::mips:
269 case Triple::mipsel:
Rafael Espindolab9b7ae02013-04-03 03:13:19 +0000270 FDECFIEncoding = dwarf::DW_EH_PE_sdata4;
Joerg Sonnenberger7c442522014-04-30 23:23:14 +0000271 break;
272 case Triple::mips64:
273 case Triple::mips64el:
Rafael Espindolab9b7ae02013-04-03 03:13:19 +0000274 FDECFIEncoding = dwarf::DW_EH_PE_sdata8;
Joerg Sonnenberger7c442522014-04-30 23:23:14 +0000275 break;
Rafael Espindolad11591b2014-11-27 17:13:56 +0000276 case Triple::x86_64:
277 FDECFIEncoding = dwarf::DW_EH_PE_pcrel |
278 ((CMModel == CodeModel::Large) ? dwarf::DW_EH_PE_sdata8
279 : dwarf::DW_EH_PE_sdata4);
280
281 break;
Joerg Sonnenberger7c442522014-04-30 23:23:14 +0000282 default:
Rafael Espindolaef9d3492013-03-15 05:51:57 +0000283 FDECFIEncoding = dwarf::DW_EH_PE_pcrel | dwarf::DW_EH_PE_sdata4;
Joerg Sonnenberger7c442522014-04-30 23:23:14 +0000284 break;
285 }
Rafael Espindolaef9d3492013-03-15 05:51:57 +0000286
Joerg Sonnenberger7c442522014-04-30 23:23:14 +0000287 switch (T.getArch()) {
Joerg Sonnenbergercf86ce12014-05-07 07:49:34 +0000288 case Triple::arm:
289 case Triple::armeb:
290 case Triple::thumb:
291 case Triple::thumbeb:
Joerg Sonnenberger94cbb662014-05-13 17:58:13 +0000292 if (Ctx->getAsmInfo()->getExceptionHandlingType() == ExceptionHandling::ARM)
293 break;
294 // Fallthrough if not using EHABI
Joerg Sonnenberger6637d4e2014-07-24 19:25:16 +0000295 case Triple::ppc:
Joerg Sonnenberger7c442522014-04-30 23:23:14 +0000296 case Triple::x86:
Evan Chengbbf3b0d2011-07-20 19:50:42 +0000297 PersonalityEncoding = (RelocM == Reloc::PIC_)
Jim Grosbach0dde3492011-11-15 16:46:22 +0000298 ? dwarf::DW_EH_PE_indirect | dwarf::DW_EH_PE_pcrel | dwarf::DW_EH_PE_sdata4
299 : dwarf::DW_EH_PE_absptr;
Evan Chengbbf3b0d2011-07-20 19:50:42 +0000300 LSDAEncoding = (RelocM == Reloc::PIC_)
301 ? dwarf::DW_EH_PE_pcrel | dwarf::DW_EH_PE_sdata4
302 : dwarf::DW_EH_PE_absptr;
Evan Chengbbf3b0d2011-07-20 19:50:42 +0000303 TTypeEncoding = (RelocM == Reloc::PIC_)
Jim Grosbach0dde3492011-11-15 16:46:22 +0000304 ? dwarf::DW_EH_PE_indirect | dwarf::DW_EH_PE_pcrel | dwarf::DW_EH_PE_sdata4
305 : dwarf::DW_EH_PE_absptr;
Joerg Sonnenberger7c442522014-04-30 23:23:14 +0000306 break;
307 case Triple::x86_64:
Evan Chengbbf3b0d2011-07-20 19:50:42 +0000308 if (RelocM == Reloc::PIC_) {
309 PersonalityEncoding = dwarf::DW_EH_PE_indirect | dwarf::DW_EH_PE_pcrel |
310 ((CMModel == CodeModel::Small || CMModel == CodeModel::Medium)
311 ? dwarf::DW_EH_PE_sdata4 : dwarf::DW_EH_PE_sdata8);
312 LSDAEncoding = dwarf::DW_EH_PE_pcrel |
313 (CMModel == CodeModel::Small
314 ? dwarf::DW_EH_PE_sdata4 : dwarf::DW_EH_PE_sdata8);
Evan Chengbbf3b0d2011-07-20 19:50:42 +0000315 TTypeEncoding = dwarf::DW_EH_PE_indirect | dwarf::DW_EH_PE_pcrel |
316 ((CMModel == CodeModel::Small || CMModel == CodeModel::Medium)
317 ? dwarf::DW_EH_PE_sdata4 : dwarf::DW_EH_PE_sdata8);
318 } else {
319 PersonalityEncoding =
320 (CMModel == CodeModel::Small || CMModel == CodeModel::Medium)
321 ? dwarf::DW_EH_PE_udata4 : dwarf::DW_EH_PE_absptr;
322 LSDAEncoding = (CMModel == CodeModel::Small)
323 ? dwarf::DW_EH_PE_udata4 : dwarf::DW_EH_PE_absptr;
Evan Chengbbf3b0d2011-07-20 19:50:42 +0000324 TTypeEncoding = (CMModel == CodeModel::Small)
325 ? dwarf::DW_EH_PE_udata4 : dwarf::DW_EH_PE_absptr;
326 }
Joerg Sonnenberger7c442522014-04-30 23:23:14 +0000327 break;
328 case Triple::aarch64:
329 case Triple::aarch64_be:
Tim Northovere0e3aef2013-01-31 12:12:40 +0000330 // The small model guarantees static code/data size < 4GB, but not where it
331 // will be in memory. Most of these could end up >2GB away so even a signed
332 // pc-relative 32-bit address is insufficient, theoretically.
333 if (RelocM == Reloc::PIC_) {
334 PersonalityEncoding = dwarf::DW_EH_PE_indirect | dwarf::DW_EH_PE_pcrel |
335 dwarf::DW_EH_PE_sdata8;
336 LSDAEncoding = dwarf::DW_EH_PE_pcrel | dwarf::DW_EH_PE_sdata8;
Tim Northovere0e3aef2013-01-31 12:12:40 +0000337 TTypeEncoding = dwarf::DW_EH_PE_indirect | dwarf::DW_EH_PE_pcrel |
338 dwarf::DW_EH_PE_sdata8;
339 } else {
340 PersonalityEncoding = dwarf::DW_EH_PE_absptr;
341 LSDAEncoding = dwarf::DW_EH_PE_absptr;
Tim Northovere0e3aef2013-01-31 12:12:40 +0000342 TTypeEncoding = dwarf::DW_EH_PE_absptr;
343 }
Joerg Sonnenberger7c442522014-04-30 23:23:14 +0000344 break;
Logan Chienc0029812014-05-30 16:48:56 +0000345 case Triple::mips:
346 case Triple::mipsel:
Petar Jovanovic35f05742014-11-05 22:42:31 +0000347 case Triple::mips64:
348 case Triple::mips64el:
Logan Chienc0029812014-05-30 16:48:56 +0000349 // MIPS uses indirect pointer to refer personality functions, so that the
350 // eh_frame section can be read-only. DW.ref.personality will be generated
351 // for relocation.
352 PersonalityEncoding = dwarf::DW_EH_PE_indirect;
353 break;
Joerg Sonnenberger7c442522014-04-30 23:23:14 +0000354 case Triple::ppc64:
355 case Triple::ppc64le:
Adhemerval Zanella1ae22482013-01-09 17:08:15 +0000356 PersonalityEncoding = dwarf::DW_EH_PE_indirect | dwarf::DW_EH_PE_pcrel |
357 dwarf::DW_EH_PE_udata8;
Adhemerval Zanella1ae22482013-01-09 17:08:15 +0000358 LSDAEncoding = dwarf::DW_EH_PE_pcrel | dwarf::DW_EH_PE_udata8;
Adhemerval Zanella1ae22482013-01-09 17:08:15 +0000359 TTypeEncoding = dwarf::DW_EH_PE_indirect | dwarf::DW_EH_PE_pcrel |
360 dwarf::DW_EH_PE_udata8;
Joerg Sonnenberger7c442522014-04-30 23:23:14 +0000361 break;
362 case Triple::sparc:
Jakob Stoklund Olesen83c67732014-01-28 02:52:26 +0000363 if (RelocM == Reloc::PIC_) {
364 LSDAEncoding = dwarf::DW_EH_PE_pcrel | dwarf::DW_EH_PE_sdata4;
365 PersonalityEncoding = dwarf::DW_EH_PE_indirect | dwarf::DW_EH_PE_pcrel |
366 dwarf::DW_EH_PE_sdata4;
Jakob Stoklund Olesen83c67732014-01-28 02:52:26 +0000367 TTypeEncoding = dwarf::DW_EH_PE_indirect | dwarf::DW_EH_PE_pcrel |
368 dwarf::DW_EH_PE_sdata4;
369 } else {
370 LSDAEncoding = dwarf::DW_EH_PE_absptr;
371 PersonalityEncoding = dwarf::DW_EH_PE_absptr;
Jakob Stoklund Olesen83c67732014-01-28 02:52:26 +0000372 TTypeEncoding = dwarf::DW_EH_PE_absptr;
373 }
Joerg Sonnenbergerfa9cf652014-04-30 23:36:24 +0000374 break;
Joerg Sonnenberger7c442522014-04-30 23:23:14 +0000375 case Triple::sparcv9:
Jakob Stoklund Olesen83c67732014-01-28 02:52:26 +0000376 LSDAEncoding = dwarf::DW_EH_PE_pcrel | dwarf::DW_EH_PE_sdata4;
377 if (RelocM == Reloc::PIC_) {
378 PersonalityEncoding = dwarf::DW_EH_PE_indirect | dwarf::DW_EH_PE_pcrel |
379 dwarf::DW_EH_PE_sdata4;
Jakob Stoklund Olesen83c67732014-01-28 02:52:26 +0000380 TTypeEncoding = dwarf::DW_EH_PE_indirect | dwarf::DW_EH_PE_pcrel |
381 dwarf::DW_EH_PE_sdata4;
382 } else {
383 PersonalityEncoding = dwarf::DW_EH_PE_absptr;
Jakob Stoklund Olesen83c67732014-01-28 02:52:26 +0000384 TTypeEncoding = dwarf::DW_EH_PE_absptr;
385 }
Joerg Sonnenbergerfa9cf652014-04-30 23:36:24 +0000386 break;
Joerg Sonnenberger7c442522014-04-30 23:23:14 +0000387 case Triple::systemz:
Ulrich Weigand0213e7f2013-05-06 16:11:12 +0000388 // All currently-defined code models guarantee that 4-byte PC-relative
389 // values will be in range.
Ulrich Weigande7c6dfe2013-05-06 17:28:30 +0000390 if (RelocM == Reloc::PIC_) {
391 PersonalityEncoding = dwarf::DW_EH_PE_indirect | dwarf::DW_EH_PE_pcrel |
392 dwarf::DW_EH_PE_sdata4;
393 LSDAEncoding = dwarf::DW_EH_PE_pcrel | dwarf::DW_EH_PE_sdata4;
Ulrich Weigande7c6dfe2013-05-06 17:28:30 +0000394 TTypeEncoding = dwarf::DW_EH_PE_indirect | dwarf::DW_EH_PE_pcrel |
395 dwarf::DW_EH_PE_sdata4;
396 } else {
397 PersonalityEncoding = dwarf::DW_EH_PE_absptr;
398 LSDAEncoding = dwarf::DW_EH_PE_absptr;
Ulrich Weigande7c6dfe2013-05-06 17:28:30 +0000399 TTypeEncoding = dwarf::DW_EH_PE_absptr;
400 }
Joerg Sonnenbergerfa9cf652014-04-30 23:36:24 +0000401 break;
Joerg Sonnenberger7c442522014-04-30 23:23:14 +0000402 default:
403 break;
Evan Chengbbf3b0d2011-07-20 19:50:42 +0000404 }
405
David Chisnall07f8d3e2012-02-17 17:31:15 +0000406 // Solaris requires different flags for .eh_frame to seemingly every other
407 // platform.
David Chisnallbbec8722012-04-10 11:44:33 +0000408 EHSectionType = ELF::SHT_PROGBITS;
David Chisnall07f8d3e2012-02-17 17:31:15 +0000409 EHSectionFlags = ELF::SHF_ALLOC;
Simon Pilgrima2794102014-11-22 19:12:10 +0000410 if (T.isOSSolaris()) {
David Chisnallbbec8722012-04-10 11:44:33 +0000411 if (T.getArch() == Triple::x86_64)
412 EHSectionType = ELF::SHT_X86_64_UNWIND;
413 else
414 EHSectionFlags |= ELF::SHF_WRITE;
415 }
David Chisnall07f8d3e2012-02-17 17:31:15 +0000416
417
Evan Cheng76792992011-07-20 05:58:47 +0000418 // ELF
419 BSSSection =
420 Ctx->getELFSection(".bss", ELF::SHT_NOBITS,
Anton Korobeynikov7722a2d2012-01-25 22:24:19 +0000421 ELF::SHF_WRITE | ELF::SHF_ALLOC,
Evan Cheng76792992011-07-20 05:58:47 +0000422 SectionKind::getBSS());
423
424 TextSection =
425 Ctx->getELFSection(".text", ELF::SHT_PROGBITS,
426 ELF::SHF_EXECINSTR |
427 ELF::SHF_ALLOC,
428 SectionKind::getText());
429
430 DataSection =
431 Ctx->getELFSection(".data", ELF::SHT_PROGBITS,
432 ELF::SHF_WRITE |ELF::SHF_ALLOC,
433 SectionKind::getDataRel());
434
435 ReadOnlySection =
436 Ctx->getELFSection(".rodata", ELF::SHT_PROGBITS,
437 ELF::SHF_ALLOC,
438 SectionKind::getReadOnly());
439
440 TLSDataSection =
441 Ctx->getELFSection(".tdata", ELF::SHT_PROGBITS,
442 ELF::SHF_ALLOC | ELF::SHF_TLS |
443 ELF::SHF_WRITE,
444 SectionKind::getThreadData());
445
446 TLSBSSSection =
447 Ctx->getELFSection(".tbss", ELF::SHT_NOBITS,
448 ELF::SHF_ALLOC | ELF::SHF_TLS |
449 ELF::SHF_WRITE,
450 SectionKind::getThreadBSS());
451
452 DataRelSection =
453 Ctx->getELFSection(".data.rel", ELF::SHT_PROGBITS,
454 ELF::SHF_ALLOC |ELF::SHF_WRITE,
455 SectionKind::getDataRel());
456
457 DataRelLocalSection =
458 Ctx->getELFSection(".data.rel.local", ELF::SHT_PROGBITS,
459 ELF::SHF_ALLOC |ELF::SHF_WRITE,
460 SectionKind::getDataRelLocal());
461
462 DataRelROSection =
463 Ctx->getELFSection(".data.rel.ro", ELF::SHT_PROGBITS,
464 ELF::SHF_ALLOC |ELF::SHF_WRITE,
465 SectionKind::getReadOnlyWithRel());
466
467 DataRelROLocalSection =
468 Ctx->getELFSection(".data.rel.ro.local", ELF::SHT_PROGBITS,
469 ELF::SHF_ALLOC |ELF::SHF_WRITE,
470 SectionKind::getReadOnlyWithRelLocal());
471
472 MergeableConst4Section =
473 Ctx->getELFSection(".rodata.cst4", ELF::SHT_PROGBITS,
474 ELF::SHF_ALLOC |ELF::SHF_MERGE,
475 SectionKind::getMergeableConst4());
476
477 MergeableConst8Section =
478 Ctx->getELFSection(".rodata.cst8", ELF::SHT_PROGBITS,
479 ELF::SHF_ALLOC |ELF::SHF_MERGE,
480 SectionKind::getMergeableConst8());
481
482 MergeableConst16Section =
483 Ctx->getELFSection(".rodata.cst16", ELF::SHT_PROGBITS,
484 ELF::SHF_ALLOC |ELF::SHF_MERGE,
485 SectionKind::getMergeableConst16());
486
487 StaticCtorSection =
488 Ctx->getELFSection(".ctors", ELF::SHT_PROGBITS,
489 ELF::SHF_ALLOC |ELF::SHF_WRITE,
490 SectionKind::getDataRel());
491
492 StaticDtorSection =
493 Ctx->getELFSection(".dtors", ELF::SHT_PROGBITS,
494 ELF::SHF_ALLOC |ELF::SHF_WRITE,
495 SectionKind::getDataRel());
496
497 // Exception Handling Sections.
498
499 // FIXME: We're emitting LSDA info into a readonly section on ELF, even though
500 // it contains relocatable pointers. In PIC mode, this is probably a big
501 // runtime hit for C++ apps. Either the contents of the LSDA need to be
502 // adjusted or this should be a data section.
503 LSDASection =
504 Ctx->getELFSection(".gcc_except_table", ELF::SHT_PROGBITS,
505 ELF::SHF_ALLOC,
506 SectionKind::getReadOnly());
507
Craig Topperbb694de2014-04-13 04:57:38 +0000508 COFFDebugSymbolsSection = nullptr;
Timur Iskhodzhanovf166f6c2014-01-30 01:39:17 +0000509
Evan Cheng76792992011-07-20 05:58:47 +0000510 // Debug Info Sections.
511 DwarfAbbrevSection =
512 Ctx->getELFSection(".debug_abbrev", ELF::SHT_PROGBITS, 0,
513 SectionKind::getMetadata());
514 DwarfInfoSection =
515 Ctx->getELFSection(".debug_info", ELF::SHT_PROGBITS, 0,
516 SectionKind::getMetadata());
517 DwarfLineSection =
518 Ctx->getELFSection(".debug_line", ELF::SHT_PROGBITS, 0,
519 SectionKind::getMetadata());
520 DwarfFrameSection =
521 Ctx->getELFSection(".debug_frame", ELF::SHT_PROGBITS, 0,
522 SectionKind::getMetadata());
Krzysztof Parzyszek228daa62013-02-12 18:00:14 +0000523 DwarfPubNamesSection =
524 Ctx->getELFSection(".debug_pubnames", ELF::SHT_PROGBITS, 0,
525 SectionKind::getMetadata());
Evan Cheng76792992011-07-20 05:58:47 +0000526 DwarfPubTypesSection =
527 Ctx->getELFSection(".debug_pubtypes", ELF::SHT_PROGBITS, 0,
528 SectionKind::getMetadata());
Eric Christopherb0e76942013-09-09 20:03:14 +0000529 DwarfGnuPubNamesSection =
530 Ctx->getELFSection(".debug_gnu_pubnames", ELF::SHT_PROGBITS, 0,
531 SectionKind::getMetadata());
532 DwarfGnuPubTypesSection =
533 Ctx->getELFSection(".debug_gnu_pubtypes", ELF::SHT_PROGBITS, 0,
534 SectionKind::getMetadata());
Evan Cheng76792992011-07-20 05:58:47 +0000535 DwarfStrSection =
Nick Lewycky1a62d782011-10-26 18:44:32 +0000536 Ctx->getELFSection(".debug_str", ELF::SHT_PROGBITS,
537 ELF::SHF_MERGE | ELF::SHF_STRINGS,
538 SectionKind::getMergeable1ByteCString());
Evan Cheng76792992011-07-20 05:58:47 +0000539 DwarfLocSection =
540 Ctx->getELFSection(".debug_loc", ELF::SHT_PROGBITS, 0,
541 SectionKind::getMetadata());
542 DwarfARangesSection =
543 Ctx->getELFSection(".debug_aranges", ELF::SHT_PROGBITS, 0,
544 SectionKind::getMetadata());
545 DwarfRangesSection =
546 Ctx->getELFSection(".debug_ranges", ELF::SHT_PROGBITS, 0,
547 SectionKind::getMetadata());
548 DwarfMacroInfoSection =
549 Ctx->getELFSection(".debug_macinfo", ELF::SHT_PROGBITS, 0,
550 SectionKind::getMetadata());
Eric Christopher27ed8ec2012-11-28 02:49:34 +0000551
552 // DWARF5 Experimental Debug Info
553
554 // Accelerator Tables
Eric Christophera0ad67d2012-10-08 21:41:30 +0000555 DwarfAccelNamesSection =
556 Ctx->getELFSection(".apple_names", ELF::SHT_PROGBITS, 0,
557 SectionKind::getMetadata());
558 DwarfAccelObjCSection =
559 Ctx->getELFSection(".apple_objc", ELF::SHT_PROGBITS, 0,
560 SectionKind::getMetadata());
561 DwarfAccelNamespaceSection =
562 Ctx->getELFSection(".apple_namespaces", ELF::SHT_PROGBITS, 0,
563 SectionKind::getMetadata());
564 DwarfAccelTypesSection =
565 Ctx->getELFSection(".apple_types", ELF::SHT_PROGBITS, 0,
566 SectionKind::getMetadata());
Eric Christopherc3b434b2012-11-28 02:49:38 +0000567
568 // Fission Sections
569 DwarfInfoDWOSection =
570 Ctx->getELFSection(".debug_info.dwo", ELF::SHT_PROGBITS, 0,
571 SectionKind::getMetadata());
David Blaikie29459ae2014-07-25 17:11:58 +0000572 DwarfTypesDWOSection =
573 Ctx->getELFSection(".debug_types.dwo", ELF::SHT_PROGBITS, 0,
574 SectionKind::getMetadata());
Eric Christopher3c230092012-11-30 06:47:06 +0000575 DwarfAbbrevDWOSection =
576 Ctx->getELFSection(".debug_abbrev.dwo", ELF::SHT_PROGBITS, 0,
577 SectionKind::getMetadata());
578 DwarfStrDWOSection =
579 Ctx->getELFSection(".debug_str.dwo", ELF::SHT_PROGBITS,
580 ELF::SHF_MERGE | ELF::SHF_STRINGS,
581 SectionKind::getMergeable1ByteCString());
582 DwarfLineDWOSection =
583 Ctx->getELFSection(".debug_line.dwo", ELF::SHT_PROGBITS, 0,
584 SectionKind::getMetadata());
585 DwarfLocDWOSection =
586 Ctx->getELFSection(".debug_loc.dwo", ELF::SHT_PROGBITS, 0,
587 SectionKind::getMetadata());
Eric Christopherc0fa8672013-01-04 17:59:22 +0000588 DwarfStrOffDWOSection =
589 Ctx->getELFSection(".debug_str_offsets.dwo", ELF::SHT_PROGBITS, 0,
590 SectionKind::getMetadata());
Eric Christopher962c9082013-01-15 23:56:56 +0000591 DwarfAddrSection =
592 Ctx->getELFSection(".debug_addr", ELF::SHT_PROGBITS, 0,
593 SectionKind::getMetadata());
Philip Reames76846182014-08-01 18:47:09 +0000594
595 StackMapSection =
596 Ctx->getELFSection(".llvm_stackmaps", ELF::SHT_PROGBITS,
597 ELF::SHF_ALLOC,
598 SectionKind::getMetadata());
599
Evan Cheng76792992011-07-20 05:58:47 +0000600}
601
602
603void MCObjectFileInfo::InitCOFFMCObjectFileInfo(Triple T) {
Saleem Abdulrasool70a02062014-06-08 03:57:49 +0000604 bool IsWoA = T.getArch() == Triple::arm || T.getArch() == Triple::thumb;
605
David Majnemer48227a32014-09-21 09:18:07 +0000606 CommDirectiveSupportsAlignment = true;
David Majnemera9bdb322014-04-08 22:33:40 +0000607
Evan Cheng76792992011-07-20 05:58:47 +0000608 // COFF
David Majnemer3d96acb2013-08-13 01:23:53 +0000609 BSSSection =
610 Ctx->getCOFFSection(".bss",
611 COFF::IMAGE_SCN_CNT_UNINITIALIZED_DATA |
612 COFF::IMAGE_SCN_MEM_READ |
613 COFF::IMAGE_SCN_MEM_WRITE,
614 SectionKind::getBSS());
Evan Cheng76792992011-07-20 05:58:47 +0000615 TextSection =
616 Ctx->getCOFFSection(".text",
Patrik Hagglundaad35e72014-06-09 07:35:07 +0000617 (IsWoA ? COFF::IMAGE_SCN_MEM_16BIT
618 : (COFF::SectionCharacteristics)0) |
Evan Cheng76792992011-07-20 05:58:47 +0000619 COFF::IMAGE_SCN_CNT_CODE |
620 COFF::IMAGE_SCN_MEM_EXECUTE |
621 COFF::IMAGE_SCN_MEM_READ,
622 SectionKind::getText());
623 DataSection =
624 Ctx->getCOFFSection(".data",
625 COFF::IMAGE_SCN_CNT_INITIALIZED_DATA |
626 COFF::IMAGE_SCN_MEM_READ |
627 COFF::IMAGE_SCN_MEM_WRITE,
628 SectionKind::getDataRel());
629 ReadOnlySection =
630 Ctx->getCOFFSection(".rdata",
631 COFF::IMAGE_SCN_CNT_INITIALIZED_DATA |
632 COFF::IMAGE_SCN_MEM_READ,
633 SectionKind::getReadOnly());
Saleem Abdulrasoola35f04a2014-06-08 00:34:23 +0000634
Saleem Abdulrasooled7fc4b2014-06-08 00:34:27 +0000635 if (T.isKnownWindowsMSVCEnvironment() || T.isWindowsItaniumEnvironment()) {
Michael J. Spencerb560d072012-02-23 21:56:08 +0000636 StaticCtorSection =
637 Ctx->getCOFFSection(".CRT$XCU",
638 COFF::IMAGE_SCN_CNT_INITIALIZED_DATA |
639 COFF::IMAGE_SCN_MEM_READ,
640 SectionKind::getReadOnly());
Saleem Abdulrasoola35f04a2014-06-08 00:34:23 +0000641 StaticDtorSection =
642 Ctx->getCOFFSection(".CRT$XTX",
643 COFF::IMAGE_SCN_CNT_INITIALIZED_DATA |
644 COFF::IMAGE_SCN_MEM_READ,
645 SectionKind::getReadOnly());
Michael J. Spencerb560d072012-02-23 21:56:08 +0000646 } else {
647 StaticCtorSection =
648 Ctx->getCOFFSection(".ctors",
649 COFF::IMAGE_SCN_CNT_INITIALIZED_DATA |
650 COFF::IMAGE_SCN_MEM_READ |
651 COFF::IMAGE_SCN_MEM_WRITE,
652 SectionKind::getDataRel());
Anton Korobeynikov37d73002012-09-23 15:53:47 +0000653 StaticDtorSection =
654 Ctx->getCOFFSection(".dtors",
655 COFF::IMAGE_SCN_CNT_INITIALIZED_DATA |
656 COFF::IMAGE_SCN_MEM_READ |
657 COFF::IMAGE_SCN_MEM_WRITE,
658 SectionKind::getDataRel());
659 }
Evan Cheng76792992011-07-20 05:58:47 +0000660
661 // FIXME: We're emitting LSDA info into a readonly section on COFF, even
662 // though it contains relocatable pointers. In PIC mode, this is probably a
663 // big runtime hit for C++ apps. Either the contents of the LSDA need to be
664 // adjusted or this should be a data section.
NAKAMURA Takumi1db59952014-06-25 12:41:52 +0000665 assert(T.isOSWindows() && "Windows is the only supported COFF target");
666 if (T.getArch() == Triple::x86_64) {
667 // On Windows 64 with SEH, the LSDA is emitted into the .xdata section
668 LSDASection = 0;
669 } else {
670 LSDASection = Ctx->getCOFFSection(".gcc_except_table",
671 COFF::IMAGE_SCN_CNT_INITIALIZED_DATA |
672 COFF::IMAGE_SCN_MEM_READ,
673 SectionKind::getReadOnly());
674 }
Evan Cheng76792992011-07-20 05:58:47 +0000675
676 // Debug info.
Timur Iskhodzhanov31377c52014-01-28 03:48:44 +0000677 COFFDebugSymbolsSection =
678 Ctx->getCOFFSection(".debug$S",
679 COFF::IMAGE_SCN_MEM_DISCARDABLE |
680 COFF::IMAGE_SCN_CNT_INITIALIZED_DATA |
681 COFF::IMAGE_SCN_MEM_READ,
682 SectionKind::getMetadata());
683
Evan Cheng76792992011-07-20 05:58:47 +0000684 DwarfAbbrevSection =
685 Ctx->getCOFFSection(".debug_abbrev",
686 COFF::IMAGE_SCN_MEM_DISCARDABLE |
687 COFF::IMAGE_SCN_MEM_READ,
688 SectionKind::getMetadata());
689 DwarfInfoSection =
690 Ctx->getCOFFSection(".debug_info",
691 COFF::IMAGE_SCN_MEM_DISCARDABLE |
692 COFF::IMAGE_SCN_MEM_READ,
693 SectionKind::getMetadata());
694 DwarfLineSection =
695 Ctx->getCOFFSection(".debug_line",
696 COFF::IMAGE_SCN_MEM_DISCARDABLE |
697 COFF::IMAGE_SCN_MEM_READ,
698 SectionKind::getMetadata());
699 DwarfFrameSection =
700 Ctx->getCOFFSection(".debug_frame",
701 COFF::IMAGE_SCN_MEM_DISCARDABLE |
702 COFF::IMAGE_SCN_MEM_READ,
703 SectionKind::getMetadata());
Krzysztof Parzyszek228daa62013-02-12 18:00:14 +0000704 DwarfPubNamesSection =
705 Ctx->getCOFFSection(".debug_pubnames",
706 COFF::IMAGE_SCN_MEM_DISCARDABLE |
707 COFF::IMAGE_SCN_MEM_READ,
708 SectionKind::getMetadata());
Evan Cheng76792992011-07-20 05:58:47 +0000709 DwarfPubTypesSection =
710 Ctx->getCOFFSection(".debug_pubtypes",
711 COFF::IMAGE_SCN_MEM_DISCARDABLE |
712 COFF::IMAGE_SCN_MEM_READ,
713 SectionKind::getMetadata());
NAKAMURA Takumi0229e352013-09-10 06:01:56 +0000714 DwarfGnuPubNamesSection =
Eric Christopherb0e76942013-09-09 20:03:14 +0000715 Ctx->getCOFFSection(".debug_gnu_pubnames",
716 COFF::IMAGE_SCN_MEM_DISCARDABLE |
717 COFF::IMAGE_SCN_MEM_READ,
718 SectionKind::getMetadata());
NAKAMURA Takumi0229e352013-09-10 06:01:56 +0000719 DwarfGnuPubTypesSection =
Eric Christopherb0e76942013-09-09 20:03:14 +0000720 Ctx->getCOFFSection(".debug_gnu_pubtypes",
721 COFF::IMAGE_SCN_MEM_DISCARDABLE |
722 COFF::IMAGE_SCN_MEM_READ,
723 SectionKind::getMetadata());
Evan Cheng76792992011-07-20 05:58:47 +0000724 DwarfStrSection =
725 Ctx->getCOFFSection(".debug_str",
726 COFF::IMAGE_SCN_MEM_DISCARDABLE |
727 COFF::IMAGE_SCN_MEM_READ,
728 SectionKind::getMetadata());
729 DwarfLocSection =
730 Ctx->getCOFFSection(".debug_loc",
731 COFF::IMAGE_SCN_MEM_DISCARDABLE |
732 COFF::IMAGE_SCN_MEM_READ,
733 SectionKind::getMetadata());
734 DwarfARangesSection =
735 Ctx->getCOFFSection(".debug_aranges",
736 COFF::IMAGE_SCN_MEM_DISCARDABLE |
737 COFF::IMAGE_SCN_MEM_READ,
738 SectionKind::getMetadata());
739 DwarfRangesSection =
740 Ctx->getCOFFSection(".debug_ranges",
741 COFF::IMAGE_SCN_MEM_DISCARDABLE |
742 COFF::IMAGE_SCN_MEM_READ,
743 SectionKind::getMetadata());
744 DwarfMacroInfoSection =
745 Ctx->getCOFFSection(".debug_macinfo",
746 COFF::IMAGE_SCN_MEM_DISCARDABLE |
747 COFF::IMAGE_SCN_MEM_READ,
748 SectionKind::getMetadata());
David Blaikie62dd7df2014-03-26 03:05:10 +0000749 DwarfInfoDWOSection =
Saleem Abdulrasoola35f04a2014-06-08 00:34:23 +0000750 Ctx->getCOFFSection(".debug_info.dwo",
751 COFF::IMAGE_SCN_MEM_DISCARDABLE |
752 COFF::IMAGE_SCN_MEM_READ,
David Blaikie62dd7df2014-03-26 03:05:10 +0000753 SectionKind::getMetadata());
David Blaikie29459ae2014-07-25 17:11:58 +0000754 DwarfTypesDWOSection =
755 Ctx->getCOFFSection(".debug_types.dwo", COFF::IMAGE_SCN_MEM_DISCARDABLE |
756 COFF::IMAGE_SCN_MEM_READ,
757 SectionKind::getMetadata());
David Blaikie62dd7df2014-03-26 03:05:10 +0000758 DwarfAbbrevDWOSection =
Saleem Abdulrasoola35f04a2014-06-08 00:34:23 +0000759 Ctx->getCOFFSection(".debug_abbrev.dwo",
760 COFF::IMAGE_SCN_MEM_DISCARDABLE |
761 COFF::IMAGE_SCN_MEM_READ,
David Blaikie62dd7df2014-03-26 03:05:10 +0000762 SectionKind::getMetadata());
763 DwarfStrDWOSection =
Saleem Abdulrasoola35f04a2014-06-08 00:34:23 +0000764 Ctx->getCOFFSection(".debug_str.dwo",
765 COFF::IMAGE_SCN_MEM_DISCARDABLE |
766 COFF::IMAGE_SCN_MEM_READ,
David Blaikie62dd7df2014-03-26 03:05:10 +0000767 SectionKind::getMetadata());
768 DwarfLineDWOSection =
Saleem Abdulrasoola35f04a2014-06-08 00:34:23 +0000769 Ctx->getCOFFSection(".debug_line.dwo",
770 COFF::IMAGE_SCN_MEM_DISCARDABLE |
771 COFF::IMAGE_SCN_MEM_READ,
David Blaikie62dd7df2014-03-26 03:05:10 +0000772 SectionKind::getMetadata());
773 DwarfLocDWOSection =
Saleem Abdulrasoola35f04a2014-06-08 00:34:23 +0000774 Ctx->getCOFFSection(".debug_loc.dwo",
775 COFF::IMAGE_SCN_MEM_DISCARDABLE |
776 COFF::IMAGE_SCN_MEM_READ,
David Blaikie62dd7df2014-03-26 03:05:10 +0000777 SectionKind::getMetadata());
778 DwarfStrOffDWOSection =
Saleem Abdulrasoola35f04a2014-06-08 00:34:23 +0000779 Ctx->getCOFFSection(".debug_str_offsets.dwo",
780 COFF::IMAGE_SCN_MEM_DISCARDABLE |
781 COFF::IMAGE_SCN_MEM_READ,
David Blaikie62dd7df2014-03-26 03:05:10 +0000782 SectionKind::getMetadata());
Saleem Abdulrasoola35f04a2014-06-08 00:34:23 +0000783
784 DwarfAddrSection =
785 Ctx->getCOFFSection(".debug_addr",
786 COFF::IMAGE_SCN_MEM_DISCARDABLE |
787 COFF::IMAGE_SCN_MEM_READ,
788 SectionKind::getMetadata());
Evan Cheng76792992011-07-20 05:58:47 +0000789
Frederic Riss3f1a0a72014-11-14 20:33:40 +0000790 DwarfAccelNamesSection =
791 Ctx->getCOFFSection(".apple_names",
792 COFF::IMAGE_SCN_MEM_DISCARDABLE |
793 COFF::IMAGE_SCN_MEM_READ,
794 SectionKind::getMetadata());
795 DwarfAccelNamespaceSection =
796 Ctx->getCOFFSection(".apple_namespaces",
797 COFF::IMAGE_SCN_MEM_DISCARDABLE |
798 COFF::IMAGE_SCN_MEM_READ,
799 SectionKind::getMetadata());
800 DwarfAccelTypesSection =
801 Ctx->getCOFFSection(".apple_types",
802 COFF::IMAGE_SCN_MEM_DISCARDABLE |
803 COFF::IMAGE_SCN_MEM_READ,
804 SectionKind::getMetadata());
805 DwarfAccelObjCSection =
806 Ctx->getCOFFSection(".apple_objc",
807 COFF::IMAGE_SCN_MEM_DISCARDABLE |
808 COFF::IMAGE_SCN_MEM_READ,
809 SectionKind::getMetadata());
810
Evan Cheng76792992011-07-20 05:58:47 +0000811 DrectveSection =
812 Ctx->getCOFFSection(".drectve",
Saleem Abdulrasoola35f04a2014-06-08 00:34:23 +0000813 COFF::IMAGE_SCN_LNK_INFO |
814 COFF::IMAGE_SCN_LNK_REMOVE,
Evan Cheng76792992011-07-20 05:58:47 +0000815 SectionKind::getMetadata());
816
817 PDataSection =
818 Ctx->getCOFFSection(".pdata",
819 COFF::IMAGE_SCN_CNT_INITIALIZED_DATA |
Anton Korobeynikovcc8c5392012-08-08 12:46:46 +0000820 COFF::IMAGE_SCN_MEM_READ,
Evan Cheng76792992011-07-20 05:58:47 +0000821 SectionKind::getDataRel());
822
823 XDataSection =
824 Ctx->getCOFFSection(".xdata",
825 COFF::IMAGE_SCN_CNT_INITIALIZED_DATA |
Anton Korobeynikovcc8c5392012-08-08 12:46:46 +0000826 COFF::IMAGE_SCN_MEM_READ,
Evan Cheng76792992011-07-20 05:58:47 +0000827 SectionKind::getDataRel());
Saleem Abdulrasoola35f04a2014-06-08 00:34:23 +0000828
Anton Korobeynikovc6b40172012-02-11 17:26:53 +0000829 TLSDataSection =
830 Ctx->getCOFFSection(".tls$",
831 COFF::IMAGE_SCN_CNT_INITIALIZED_DATA |
832 COFF::IMAGE_SCN_MEM_READ |
833 COFF::IMAGE_SCN_MEM_WRITE,
834 SectionKind::getDataRel());
Evan Cheng76792992011-07-20 05:58:47 +0000835}
836
Saleem Abdulrasoolbdbc0082014-06-22 22:25:01 +0000837void MCObjectFileInfo::InitMCObjectFileInfo(StringRef T, Reloc::Model relocm,
Evan Chengbbf3b0d2011-07-20 19:50:42 +0000838 CodeModel::Model cm,
Evan Cheng76792992011-07-20 05:58:47 +0000839 MCContext &ctx) {
840 RelocM = relocm;
Evan Chengbbf3b0d2011-07-20 19:50:42 +0000841 CMModel = cm;
Evan Cheng76792992011-07-20 05:58:47 +0000842 Ctx = &ctx;
843
844 // Common.
845 CommDirectiveSupportsAlignment = true;
846 SupportsWeakOmittedEHFrame = true;
Tim Northoverd1c6f512014-03-29 09:03:13 +0000847 SupportsCompactUnwindWithoutEHFrame = false;
Evan Chengbbf3b0d2011-07-20 19:50:42 +0000848
Rafael Espindolaaa7851d2014-05-12 13:47:05 +0000849 PersonalityEncoding = LSDAEncoding = FDECFIEncoding = TTypeEncoding =
850 dwarf::DW_EH_PE_absptr;
Evan Chengbbf3b0d2011-07-20 19:50:42 +0000851
Bill Wendling2d1df6b2013-04-10 21:42:06 +0000852 CompactUnwindDwarfEHFrameOnly = 0;
853
Craig Topperbb694de2014-04-13 04:57:38 +0000854 EHFrameSection = nullptr; // Created on demand.
855 CompactUnwindSection = nullptr; // Used only by selected targets.
856 DwarfAccelNamesSection = nullptr; // Used only by selected targets.
857 DwarfAccelObjCSection = nullptr; // Used only by selected targets.
858 DwarfAccelNamespaceSection = nullptr; // Used only by selected targets.
859 DwarfAccelTypesSection = nullptr; // Used only by selected targets.
Evan Cheng76792992011-07-20 05:58:47 +0000860
Saleem Abdulrasoolbdbc0082014-06-22 22:25:01 +0000861 TT = Triple(T);
862
863 Triple::ArchType Arch = TT.getArch();
Evan Cheng76792992011-07-20 05:58:47 +0000864 // FIXME: Checking for Arch here to filter out bogus triples such as
865 // cellspu-apple-darwin. Perhaps we should fix in Triple?
866 if ((Arch == Triple::x86 || Arch == Triple::x86_64 ||
867 Arch == Triple::arm || Arch == Triple::thumb ||
Tim Northovere19bed72014-07-23 12:32:47 +0000868 Arch == Triple::aarch64 ||
Evan Cheng76792992011-07-20 05:58:47 +0000869 Arch == Triple::ppc || Arch == Triple::ppc64 ||
870 Arch == Triple::UnknownArch) &&
Saleem Abdulrasoolbdbc0082014-06-22 22:25:01 +0000871 (TT.isOSDarwin() || TT.isOSBinFormatMachO())) {
Evan Cheng76792992011-07-20 05:58:47 +0000872 Env = IsMachO;
Saleem Abdulrasoolbdbc0082014-06-22 22:25:01 +0000873 InitMachOMCObjectFileInfo(TT);
Saleem Abdulrasoolffdb92a702014-04-27 04:54:16 +0000874 } else if ((Arch == Triple::x86 || Arch == Triple::x86_64 ||
875 Arch == Triple::arm || Arch == Triple::thumb) &&
Saleem Abdulrasoolbdbc0082014-06-22 22:25:01 +0000876 (TT.isOSWindows() && TT.getObjectFormat() == Triple::COFF)) {
Evan Cheng76792992011-07-20 05:58:47 +0000877 Env = IsCOFF;
Saleem Abdulrasoolbdbc0082014-06-22 22:25:01 +0000878 InitCOFFMCObjectFileInfo(TT);
Evan Cheng76792992011-07-20 05:58:47 +0000879 } else {
880 Env = IsELF;
Saleem Abdulrasoolbdbc0082014-06-22 22:25:01 +0000881 InitELFMCObjectFileInfo(TT);
Evan Cheng76792992011-07-20 05:58:47 +0000882 }
883}
884
David Blaikiebc563272013-12-13 21:33:40 +0000885const MCSection *MCObjectFileInfo::getDwarfTypesSection(uint64_t Hash) const {
886 return Ctx->getELFSection(".debug_types", ELF::SHT_PROGBITS, ELF::SHF_GROUP,
887 SectionKind::getMetadata(), 0, utostr(Hash));
888}
889
David Chisnall85dd3092012-02-17 16:51:02 +0000890void MCObjectFileInfo::InitEHFrameSection() {
891 if (Env == IsMachO)
892 EHFrameSection =
893 Ctx->getMachOSection("__TEXT", "__eh_frame",
David Majnemer7b583052014-03-07 07:36:05 +0000894 MachO::S_COALESCED |
895 MachO::S_ATTR_NO_TOC |
896 MachO::S_ATTR_STRIP_STATIC_SYMS |
897 MachO::S_ATTR_LIVE_SUPPORT,
David Chisnall85dd3092012-02-17 16:51:02 +0000898 SectionKind::getReadOnly());
899 else if (Env == IsELF)
900 EHFrameSection =
David Chisnallbbec8722012-04-10 11:44:33 +0000901 Ctx->getELFSection(".eh_frame", EHSectionType,
David Chisnall07f8d3e2012-02-17 17:31:15 +0000902 EHSectionFlags,
David Chisnall85dd3092012-02-17 16:51:02 +0000903 SectionKind::getDataRel());
904 else
905 EHFrameSection =
906 Ctx->getCOFFSection(".eh_frame",
907 COFF::IMAGE_SCN_CNT_INITIALIZED_DATA |
908 COFF::IMAGE_SCN_MEM_READ |
909 COFF::IMAGE_SCN_MEM_WRITE,
910 SectionKind::getDataRel());
911}