blob: 26d2b61d5894f9cc1e1fd6f7552024df45ab6269 [file] [log] [blame]
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"
Evan Cheng76792992011-07-20 05:58:47 +000013#include "llvm/MC/MCContext.h"
14#include "llvm/MC/MCSection.h"
15#include "llvm/MC/MCSectionCOFF.h"
16#include "llvm/MC/MCSectionELF.h"
17#include "llvm/MC/MCSectionMachO.h"
Evan Cheng76792992011-07-20 05:58:47 +000018using namespace llvm;
19
20void MCObjectFileInfo::InitMachOMCObjectFileInfo(Triple T) {
21 // MachO
22 IsFunctionEHFrameSymbolPrivate = false;
23 SupportsWeakOmittedEHFrame = false;
24
Tim Northover00ed9962014-03-29 10:18:08 +000025 if (T.isOSDarwin() && T.getArch() == Triple::arm64)
26 SupportsCompactUnwindWithoutEHFrame = true;
27
Evan Chengbbf3b0d2011-07-20 19:50:42 +000028 PersonalityEncoding = dwarf::DW_EH_PE_indirect | dwarf::DW_EH_PE_pcrel
29 | dwarf::DW_EH_PE_sdata4;
30 LSDAEncoding = FDEEncoding = FDECFIEncoding = dwarf::DW_EH_PE_pcrel;
31 TTypeEncoding = dwarf::DW_EH_PE_indirect | dwarf::DW_EH_PE_pcrel |
32 dwarf::DW_EH_PE_sdata4;
33
Evan Cheng76792992011-07-20 05:58:47 +000034 // .comm doesn't support alignment before Leopard.
35 if (T.isMacOSX() && T.isMacOSXVersionLT(10, 5))
36 CommDirectiveSupportsAlignment = false;
37
38 TextSection // .text
39 = Ctx->getMachOSection("__TEXT", "__text",
David Majnemer7b583052014-03-07 07:36:05 +000040 MachO::S_ATTR_PURE_INSTRUCTIONS,
Evan Cheng76792992011-07-20 05:58:47 +000041 SectionKind::getText());
42 DataSection // .data
43 = Ctx->getMachOSection("__DATA", "__data", 0,
44 SectionKind::getDataRel());
45
NAKAMURA Takumi68fa6f92013-09-21 02:34:45 +000046 // BSSSection might not be expected initialized on msvc.
Craig Topperbb694de2014-04-13 04:57:38 +000047 BSSSection = nullptr;
NAKAMURA Takumi68fa6f92013-09-21 02:34:45 +000048
Evan Cheng76792992011-07-20 05:58:47 +000049 TLSDataSection // .tdata
50 = Ctx->getMachOSection("__DATA", "__thread_data",
David Majnemer7b583052014-03-07 07:36:05 +000051 MachO::S_THREAD_LOCAL_REGULAR,
Evan Cheng76792992011-07-20 05:58:47 +000052 SectionKind::getDataRel());
53 TLSBSSSection // .tbss
54 = Ctx->getMachOSection("__DATA", "__thread_bss",
David Majnemer7b583052014-03-07 07:36:05 +000055 MachO::S_THREAD_LOCAL_ZEROFILL,
Evan Cheng76792992011-07-20 05:58:47 +000056 SectionKind::getThreadBSS());
57
58 // TODO: Verify datarel below.
59 TLSTLVSection // .tlv
60 = Ctx->getMachOSection("__DATA", "__thread_vars",
David Majnemer7b583052014-03-07 07:36:05 +000061 MachO::S_THREAD_LOCAL_VARIABLES,
Evan Cheng76792992011-07-20 05:58:47 +000062 SectionKind::getDataRel());
63
64 TLSThreadInitSection
65 = Ctx->getMachOSection("__DATA", "__thread_init",
David Majnemer7b583052014-03-07 07:36:05 +000066 MachO::S_THREAD_LOCAL_INIT_FUNCTION_POINTERS,
Jim Grosbach0dde3492011-11-15 16:46:22 +000067 SectionKind::getDataRel());
Evan Cheng76792992011-07-20 05:58:47 +000068
69 CStringSection // .cstring
70 = Ctx->getMachOSection("__TEXT", "__cstring",
David Majnemer7b583052014-03-07 07:36:05 +000071 MachO::S_CSTRING_LITERALS,
Evan Cheng76792992011-07-20 05:58:47 +000072 SectionKind::getMergeable1ByteCString());
73 UStringSection
74 = Ctx->getMachOSection("__TEXT","__ustring", 0,
75 SectionKind::getMergeable2ByteCString());
76 FourByteConstantSection // .literal4
77 = Ctx->getMachOSection("__TEXT", "__literal4",
David Majnemer7b583052014-03-07 07:36:05 +000078 MachO::S_4BYTE_LITERALS,
Evan Cheng76792992011-07-20 05:58:47 +000079 SectionKind::getMergeableConst4());
80 EightByteConstantSection // .literal8
81 = Ctx->getMachOSection("__TEXT", "__literal8",
David Majnemer7b583052014-03-07 07:36:05 +000082 MachO::S_8BYTE_LITERALS,
Evan Cheng76792992011-07-20 05:58:47 +000083 SectionKind::getMergeableConst8());
84
Rafael Espindola1f3de492014-02-13 23:16:11 +000085 SixteenByteConstantSection // .literal16
86 = Ctx->getMachOSection("__TEXT", "__literal16",
David Majnemer7b583052014-03-07 07:36:05 +000087 MachO::S_16BYTE_LITERALS,
Rafael Espindola1f3de492014-02-13 23:16:11 +000088 SectionKind::getMergeableConst16());
Evan Cheng76792992011-07-20 05:58:47 +000089
90 ReadOnlySection // .const
91 = Ctx->getMachOSection("__TEXT", "__const", 0,
92 SectionKind::getReadOnly());
93
94 TextCoalSection
95 = Ctx->getMachOSection("__TEXT", "__textcoal_nt",
David Majnemer7b583052014-03-07 07:36:05 +000096 MachO::S_COALESCED |
97 MachO::S_ATTR_PURE_INSTRUCTIONS,
Evan Cheng76792992011-07-20 05:58:47 +000098 SectionKind::getText());
99 ConstTextCoalSection
100 = Ctx->getMachOSection("__TEXT", "__const_coal",
David Majnemer7b583052014-03-07 07:36:05 +0000101 MachO::S_COALESCED,
Evan Cheng76792992011-07-20 05:58:47 +0000102 SectionKind::getReadOnly());
103 ConstDataSection // .const_data
104 = Ctx->getMachOSection("__DATA", "__const", 0,
105 SectionKind::getReadOnlyWithRel());
106 DataCoalSection
107 = Ctx->getMachOSection("__DATA","__datacoal_nt",
David Majnemer7b583052014-03-07 07:36:05 +0000108 MachO::S_COALESCED,
Evan Cheng76792992011-07-20 05:58:47 +0000109 SectionKind::getDataRel());
110 DataCommonSection
111 = Ctx->getMachOSection("__DATA","__common",
David Majnemer7b583052014-03-07 07:36:05 +0000112 MachO::S_ZEROFILL,
Evan Cheng76792992011-07-20 05:58:47 +0000113 SectionKind::getBSS());
114 DataBSSSection
David Majnemer7b583052014-03-07 07:36:05 +0000115 = Ctx->getMachOSection("__DATA","__bss", MachO::S_ZEROFILL,
Evan Cheng76792992011-07-20 05:58:47 +0000116 SectionKind::getBSS());
117
118
119 LazySymbolPointerSection
120 = Ctx->getMachOSection("__DATA", "__la_symbol_ptr",
David Majnemer7b583052014-03-07 07:36:05 +0000121 MachO::S_LAZY_SYMBOL_POINTERS,
Evan Cheng76792992011-07-20 05:58:47 +0000122 SectionKind::getMetadata());
123 NonLazySymbolPointerSection
124 = Ctx->getMachOSection("__DATA", "__nl_symbol_ptr",
David Majnemer7b583052014-03-07 07:36:05 +0000125 MachO::S_NON_LAZY_SYMBOL_POINTERS,
Evan Cheng76792992011-07-20 05:58:47 +0000126 SectionKind::getMetadata());
127
128 if (RelocM == Reloc::Static) {
129 StaticCtorSection
130 = Ctx->getMachOSection("__TEXT", "__constructor", 0,
131 SectionKind::getDataRel());
132 StaticDtorSection
133 = Ctx->getMachOSection("__TEXT", "__destructor", 0,
134 SectionKind::getDataRel());
135 } else {
136 StaticCtorSection
137 = Ctx->getMachOSection("__DATA", "__mod_init_func",
David Majnemer7b583052014-03-07 07:36:05 +0000138 MachO::S_MOD_INIT_FUNC_POINTERS,
Evan Cheng76792992011-07-20 05:58:47 +0000139 SectionKind::getDataRel());
140 StaticDtorSection
141 = Ctx->getMachOSection("__DATA", "__mod_term_func",
David Majnemer7b583052014-03-07 07:36:05 +0000142 MachO::S_MOD_TERM_FUNC_POINTERS,
Evan Cheng76792992011-07-20 05:58:47 +0000143 SectionKind::getDataRel());
144 }
145
146 // Exception Handling.
147 LSDASection = Ctx->getMachOSection("__TEXT", "__gcc_except_tab", 0,
148 SectionKind::getReadOnlyWithRel());
149
Craig Topperbb694de2014-04-13 04:57:38 +0000150 COFFDebugSymbolsSection = nullptr;
Timur Iskhodzhanovf166f6c2014-01-30 01:39:17 +0000151
Tim Northover00ed9962014-03-29 10:18:08 +0000152 if ((T.isMacOSX() && !T.isMacOSXVersionLT(10, 6)) ||
153 (T.isOSDarwin() && T.getArch() == Triple::arm64)) {
Evan Cheng76792992011-07-20 05:58:47 +0000154 CompactUnwindSection =
155 Ctx->getMachOSection("__LD", "__compact_unwind",
David Majnemer7b583052014-03-07 07:36:05 +0000156 MachO::S_ATTR_DEBUG,
Evan Cheng76792992011-07-20 05:58:47 +0000157 SectionKind::getReadOnly());
158
Bill Wendling2d1df6b2013-04-10 21:42:06 +0000159 if (T.getArch() == Triple::x86_64 || T.getArch() == Triple::x86)
160 CompactUnwindDwarfEHFrameOnly = 0x04000000;
Tim Northover00ed9962014-03-29 10:18:08 +0000161 else if (T.getArch() == Triple::arm64)
162 CompactUnwindDwarfEHFrameOnly = 0x03000000;
Bill Wendling2d1df6b2013-04-10 21:42:06 +0000163 }
164
Evan Cheng76792992011-07-20 05:58:47 +0000165 // Debug Information.
Eric Christopher4996c702011-11-07 09:24:32 +0000166 DwarfAccelNamesSection =
167 Ctx->getMachOSection("__DWARF", "__apple_names",
David Majnemer7b583052014-03-07 07:36:05 +0000168 MachO::S_ATTR_DEBUG,
Eric Christopher4996c702011-11-07 09:24:32 +0000169 SectionKind::getMetadata());
170 DwarfAccelObjCSection =
171 Ctx->getMachOSection("__DWARF", "__apple_objc",
David Majnemer7b583052014-03-07 07:36:05 +0000172 MachO::S_ATTR_DEBUG,
Eric Christopher4996c702011-11-07 09:24:32 +0000173 SectionKind::getMetadata());
174 // 16 character section limit...
175 DwarfAccelNamespaceSection =
176 Ctx->getMachOSection("__DWARF", "__apple_namespac",
David Majnemer7b583052014-03-07 07:36:05 +0000177 MachO::S_ATTR_DEBUG,
Eric Christopher4996c702011-11-07 09:24:32 +0000178 SectionKind::getMetadata());
179 DwarfAccelTypesSection =
180 Ctx->getMachOSection("__DWARF", "__apple_types",
David Majnemer7b583052014-03-07 07:36:05 +0000181 MachO::S_ATTR_DEBUG,
Eric Christopher4996c702011-11-07 09:24:32 +0000182 SectionKind::getMetadata());
Jim Grosbachdc1e36e2012-05-11 01:41:30 +0000183
Evan Cheng76792992011-07-20 05:58:47 +0000184 DwarfAbbrevSection =
185 Ctx->getMachOSection("__DWARF", "__debug_abbrev",
David Majnemer7b583052014-03-07 07:36:05 +0000186 MachO::S_ATTR_DEBUG,
Evan Cheng76792992011-07-20 05:58:47 +0000187 SectionKind::getMetadata());
188 DwarfInfoSection =
189 Ctx->getMachOSection("__DWARF", "__debug_info",
David Majnemer7b583052014-03-07 07:36:05 +0000190 MachO::S_ATTR_DEBUG,
Evan Cheng76792992011-07-20 05:58:47 +0000191 SectionKind::getMetadata());
192 DwarfLineSection =
193 Ctx->getMachOSection("__DWARF", "__debug_line",
David Majnemer7b583052014-03-07 07:36:05 +0000194 MachO::S_ATTR_DEBUG,
Evan Cheng76792992011-07-20 05:58:47 +0000195 SectionKind::getMetadata());
196 DwarfFrameSection =
197 Ctx->getMachOSection("__DWARF", "__debug_frame",
David Majnemer7b583052014-03-07 07:36:05 +0000198 MachO::S_ATTR_DEBUG,
Evan Cheng76792992011-07-20 05:58:47 +0000199 SectionKind::getMetadata());
Krzysztof Parzyszek228daa62013-02-12 18:00:14 +0000200 DwarfPubNamesSection =
201 Ctx->getMachOSection("__DWARF", "__debug_pubnames",
David Majnemer7b583052014-03-07 07:36:05 +0000202 MachO::S_ATTR_DEBUG,
Krzysztof Parzyszek228daa62013-02-12 18:00:14 +0000203 SectionKind::getMetadata());
Evan Cheng76792992011-07-20 05:58:47 +0000204 DwarfPubTypesSection =
205 Ctx->getMachOSection("__DWARF", "__debug_pubtypes",
David Majnemer7b583052014-03-07 07:36:05 +0000206 MachO::S_ATTR_DEBUG,
Evan Cheng76792992011-07-20 05:58:47 +0000207 SectionKind::getMetadata());
Eric Christopherb0e76942013-09-09 20:03:14 +0000208 DwarfGnuPubNamesSection =
209 Ctx->getMachOSection("__DWARF", "__debug_gnu_pubn",
David Majnemer7b583052014-03-07 07:36:05 +0000210 MachO::S_ATTR_DEBUG,
Eric Christopherb0e76942013-09-09 20:03:14 +0000211 SectionKind::getMetadata());
212 DwarfGnuPubTypesSection =
213 Ctx->getMachOSection("__DWARF", "__debug_gnu_pubt",
David Majnemer7b583052014-03-07 07:36:05 +0000214 MachO::S_ATTR_DEBUG,
Eric Christopherb0e76942013-09-09 20:03:14 +0000215 SectionKind::getMetadata());
Evan Cheng76792992011-07-20 05:58:47 +0000216 DwarfStrSection =
217 Ctx->getMachOSection("__DWARF", "__debug_str",
David Majnemer7b583052014-03-07 07:36:05 +0000218 MachO::S_ATTR_DEBUG,
Evan Cheng76792992011-07-20 05:58:47 +0000219 SectionKind::getMetadata());
220 DwarfLocSection =
221 Ctx->getMachOSection("__DWARF", "__debug_loc",
David Majnemer7b583052014-03-07 07:36:05 +0000222 MachO::S_ATTR_DEBUG,
Evan Cheng76792992011-07-20 05:58:47 +0000223 SectionKind::getMetadata());
224 DwarfARangesSection =
225 Ctx->getMachOSection("__DWARF", "__debug_aranges",
David Majnemer7b583052014-03-07 07:36:05 +0000226 MachO::S_ATTR_DEBUG,
Evan Cheng76792992011-07-20 05:58:47 +0000227 SectionKind::getMetadata());
228 DwarfRangesSection =
229 Ctx->getMachOSection("__DWARF", "__debug_ranges",
David Majnemer7b583052014-03-07 07:36:05 +0000230 MachO::S_ATTR_DEBUG,
Evan Cheng76792992011-07-20 05:58:47 +0000231 SectionKind::getMetadata());
232 DwarfMacroInfoSection =
233 Ctx->getMachOSection("__DWARF", "__debug_macinfo",
David Majnemer7b583052014-03-07 07:36:05 +0000234 MachO::S_ATTR_DEBUG,
Evan Cheng76792992011-07-20 05:58:47 +0000235 SectionKind::getMetadata());
236 DwarfDebugInlineSection =
237 Ctx->getMachOSection("__DWARF", "__debug_inlined",
David Majnemer7b583052014-03-07 07:36:05 +0000238 MachO::S_ATTR_DEBUG,
Evan Cheng76792992011-07-20 05:58:47 +0000239 SectionKind::getMetadata());
Lang Hames30789772013-11-08 22:14:49 +0000240 StackMapSection =
241 Ctx->getMachOSection("__LLVM_STACKMAPS", "__llvm_stackmaps", 0,
242 SectionKind::getMetadata());
Evan Cheng76792992011-07-20 05:58:47 +0000243
244 TLSExtraDataSection = TLSTLVSection;
245}
246
247void MCObjectFileInfo::InitELFMCObjectFileInfo(Triple T) {
Rafael Espindolab9b7ae02013-04-03 03:13:19 +0000248 if (T.getArch() == Triple::mips ||
249 T.getArch() == Triple::mipsel)
250 FDECFIEncoding = dwarf::DW_EH_PE_sdata4;
251 else if (T.getArch() == Triple::mips64 ||
252 T.getArch() == Triple::mips64el)
253 FDECFIEncoding = dwarf::DW_EH_PE_sdata8;
254 else
Rafael Espindolaef9d3492013-03-15 05:51:57 +0000255 FDECFIEncoding = dwarf::DW_EH_PE_pcrel | dwarf::DW_EH_PE_sdata4;
256
Evan Chengbbf3b0d2011-07-20 19:50:42 +0000257 if (T.getArch() == Triple::x86) {
258 PersonalityEncoding = (RelocM == Reloc::PIC_)
Jim Grosbach0dde3492011-11-15 16:46:22 +0000259 ? dwarf::DW_EH_PE_indirect | dwarf::DW_EH_PE_pcrel | dwarf::DW_EH_PE_sdata4
260 : dwarf::DW_EH_PE_absptr;
Evan Chengbbf3b0d2011-07-20 19:50:42 +0000261 LSDAEncoding = (RelocM == Reloc::PIC_)
262 ? dwarf::DW_EH_PE_pcrel | dwarf::DW_EH_PE_sdata4
263 : dwarf::DW_EH_PE_absptr;
Rafael Espindolaef9d3492013-03-15 05:51:57 +0000264 FDEEncoding = (RelocM == Reloc::PIC_)
Evan Chengbbf3b0d2011-07-20 19:50:42 +0000265 ? dwarf::DW_EH_PE_pcrel | dwarf::DW_EH_PE_sdata4
266 : dwarf::DW_EH_PE_absptr;
267 TTypeEncoding = (RelocM == Reloc::PIC_)
Jim Grosbach0dde3492011-11-15 16:46:22 +0000268 ? dwarf::DW_EH_PE_indirect | dwarf::DW_EH_PE_pcrel | dwarf::DW_EH_PE_sdata4
269 : dwarf::DW_EH_PE_absptr;
Evan Chengbbf3b0d2011-07-20 19:50:42 +0000270 } else if (T.getArch() == Triple::x86_64) {
Evan Chengbbf3b0d2011-07-20 19:50:42 +0000271 if (RelocM == Reloc::PIC_) {
272 PersonalityEncoding = dwarf::DW_EH_PE_indirect | dwarf::DW_EH_PE_pcrel |
273 ((CMModel == CodeModel::Small || CMModel == CodeModel::Medium)
274 ? dwarf::DW_EH_PE_sdata4 : dwarf::DW_EH_PE_sdata8);
275 LSDAEncoding = dwarf::DW_EH_PE_pcrel |
276 (CMModel == CodeModel::Small
277 ? dwarf::DW_EH_PE_sdata4 : dwarf::DW_EH_PE_sdata8);
278 FDEEncoding = dwarf::DW_EH_PE_pcrel | dwarf::DW_EH_PE_sdata4;
279 TTypeEncoding = dwarf::DW_EH_PE_indirect | dwarf::DW_EH_PE_pcrel |
280 ((CMModel == CodeModel::Small || CMModel == CodeModel::Medium)
281 ? dwarf::DW_EH_PE_sdata4 : dwarf::DW_EH_PE_sdata8);
282 } else {
283 PersonalityEncoding =
284 (CMModel == CodeModel::Small || CMModel == CodeModel::Medium)
285 ? dwarf::DW_EH_PE_udata4 : dwarf::DW_EH_PE_absptr;
286 LSDAEncoding = (CMModel == CodeModel::Small)
287 ? dwarf::DW_EH_PE_udata4 : dwarf::DW_EH_PE_absptr;
288 FDEEncoding = dwarf::DW_EH_PE_udata4;
289 TTypeEncoding = (CMModel == CodeModel::Small)
290 ? dwarf::DW_EH_PE_udata4 : dwarf::DW_EH_PE_absptr;
291 }
Tim Northover3ec1de72014-04-16 11:52:55 +0000292 } else if (T.getArch() == Triple::aarch64 ||
293 T.getArch() == Triple::aarch64_be ||
294 T.getArch() == Triple::arm64) {
Tim Northovere0e3aef2013-01-31 12:12:40 +0000295 // The small model guarantees static code/data size < 4GB, but not where it
296 // will be in memory. Most of these could end up >2GB away so even a signed
297 // pc-relative 32-bit address is insufficient, theoretically.
298 if (RelocM == Reloc::PIC_) {
299 PersonalityEncoding = dwarf::DW_EH_PE_indirect | dwarf::DW_EH_PE_pcrel |
300 dwarf::DW_EH_PE_sdata8;
301 LSDAEncoding = dwarf::DW_EH_PE_pcrel | dwarf::DW_EH_PE_sdata8;
302 FDEEncoding = dwarf::DW_EH_PE_pcrel | dwarf::DW_EH_PE_sdata4;
303 TTypeEncoding = dwarf::DW_EH_PE_indirect | dwarf::DW_EH_PE_pcrel |
304 dwarf::DW_EH_PE_sdata8;
305 } else {
306 PersonalityEncoding = dwarf::DW_EH_PE_absptr;
307 LSDAEncoding = dwarf::DW_EH_PE_absptr;
308 FDEEncoding = dwarf::DW_EH_PE_udata4;
309 TTypeEncoding = dwarf::DW_EH_PE_absptr;
310 }
Bill Schmidt0a9170d2013-07-26 01:35:43 +0000311 } else if (T.getArch() == Triple::ppc64 || T.getArch() == Triple::ppc64le) {
Adhemerval Zanella1ae22482013-01-09 17:08:15 +0000312 PersonalityEncoding = dwarf::DW_EH_PE_indirect | dwarf::DW_EH_PE_pcrel |
313 dwarf::DW_EH_PE_udata8;
Adhemerval Zanella1ae22482013-01-09 17:08:15 +0000314 LSDAEncoding = dwarf::DW_EH_PE_pcrel | dwarf::DW_EH_PE_udata8;
315 FDEEncoding = dwarf::DW_EH_PE_pcrel | dwarf::DW_EH_PE_udata8;
316 TTypeEncoding = dwarf::DW_EH_PE_indirect | dwarf::DW_EH_PE_pcrel |
317 dwarf::DW_EH_PE_udata8;
Jakob Stoklund Olesen83c67732014-01-28 02:52:26 +0000318 } else if (T.getArch() == Triple::sparc) {
319 if (RelocM == Reloc::PIC_) {
320 LSDAEncoding = dwarf::DW_EH_PE_pcrel | dwarf::DW_EH_PE_sdata4;
321 PersonalityEncoding = dwarf::DW_EH_PE_indirect | dwarf::DW_EH_PE_pcrel |
322 dwarf::DW_EH_PE_sdata4;
323 FDEEncoding = dwarf::DW_EH_PE_pcrel | dwarf::DW_EH_PE_sdata4;
324 TTypeEncoding = dwarf::DW_EH_PE_indirect | dwarf::DW_EH_PE_pcrel |
325 dwarf::DW_EH_PE_sdata4;
326 } else {
327 LSDAEncoding = dwarf::DW_EH_PE_absptr;
328 PersonalityEncoding = dwarf::DW_EH_PE_absptr;
329 FDEEncoding = dwarf::DW_EH_PE_udata4;
330 TTypeEncoding = dwarf::DW_EH_PE_absptr;
331 }
332 } else if (T.getArch() == Triple::sparcv9) {
333 LSDAEncoding = dwarf::DW_EH_PE_pcrel | dwarf::DW_EH_PE_sdata4;
334 if (RelocM == Reloc::PIC_) {
335 PersonalityEncoding = dwarf::DW_EH_PE_indirect | dwarf::DW_EH_PE_pcrel |
336 dwarf::DW_EH_PE_sdata4;
337 FDEEncoding = dwarf::DW_EH_PE_pcrel | dwarf::DW_EH_PE_sdata4;
338 TTypeEncoding = dwarf::DW_EH_PE_indirect | dwarf::DW_EH_PE_pcrel |
339 dwarf::DW_EH_PE_sdata4;
340 } else {
341 PersonalityEncoding = dwarf::DW_EH_PE_absptr;
342 FDEEncoding = dwarf::DW_EH_PE_udata4;
343 TTypeEncoding = dwarf::DW_EH_PE_absptr;
344 }
Ulrich Weigand0213e7f2013-05-06 16:11:12 +0000345 } else if (T.getArch() == Triple::systemz) {
346 // All currently-defined code models guarantee that 4-byte PC-relative
347 // values will be in range.
Ulrich Weigande7c6dfe2013-05-06 17:28:30 +0000348 if (RelocM == Reloc::PIC_) {
349 PersonalityEncoding = dwarf::DW_EH_PE_indirect | dwarf::DW_EH_PE_pcrel |
350 dwarf::DW_EH_PE_sdata4;
351 LSDAEncoding = dwarf::DW_EH_PE_pcrel | dwarf::DW_EH_PE_sdata4;
352 FDEEncoding = dwarf::DW_EH_PE_pcrel | dwarf::DW_EH_PE_sdata4;
353 TTypeEncoding = dwarf::DW_EH_PE_indirect | dwarf::DW_EH_PE_pcrel |
354 dwarf::DW_EH_PE_sdata4;
355 } else {
356 PersonalityEncoding = dwarf::DW_EH_PE_absptr;
357 LSDAEncoding = dwarf::DW_EH_PE_absptr;
358 FDEEncoding = dwarf::DW_EH_PE_absptr;
359 TTypeEncoding = dwarf::DW_EH_PE_absptr;
360 }
Evan Chengbbf3b0d2011-07-20 19:50:42 +0000361 }
362
David Chisnall07f8d3e2012-02-17 17:31:15 +0000363 // Solaris requires different flags for .eh_frame to seemingly every other
364 // platform.
David Chisnallbbec8722012-04-10 11:44:33 +0000365 EHSectionType = ELF::SHT_PROGBITS;
David Chisnall07f8d3e2012-02-17 17:31:15 +0000366 EHSectionFlags = ELF::SHF_ALLOC;
David Chisnallbbec8722012-04-10 11:44:33 +0000367 if (T.getOS() == Triple::Solaris) {
368 if (T.getArch() == Triple::x86_64)
369 EHSectionType = ELF::SHT_X86_64_UNWIND;
370 else
371 EHSectionFlags |= ELF::SHF_WRITE;
372 }
David Chisnall07f8d3e2012-02-17 17:31:15 +0000373
374
Evan Cheng76792992011-07-20 05:58:47 +0000375 // ELF
376 BSSSection =
377 Ctx->getELFSection(".bss", ELF::SHT_NOBITS,
Anton Korobeynikov7722a2d2012-01-25 22:24:19 +0000378 ELF::SHF_WRITE | ELF::SHF_ALLOC,
Evan Cheng76792992011-07-20 05:58:47 +0000379 SectionKind::getBSS());
380
381 TextSection =
382 Ctx->getELFSection(".text", ELF::SHT_PROGBITS,
383 ELF::SHF_EXECINSTR |
384 ELF::SHF_ALLOC,
385 SectionKind::getText());
386
387 DataSection =
388 Ctx->getELFSection(".data", ELF::SHT_PROGBITS,
389 ELF::SHF_WRITE |ELF::SHF_ALLOC,
390 SectionKind::getDataRel());
391
392 ReadOnlySection =
393 Ctx->getELFSection(".rodata", ELF::SHT_PROGBITS,
394 ELF::SHF_ALLOC,
395 SectionKind::getReadOnly());
396
397 TLSDataSection =
398 Ctx->getELFSection(".tdata", ELF::SHT_PROGBITS,
399 ELF::SHF_ALLOC | ELF::SHF_TLS |
400 ELF::SHF_WRITE,
401 SectionKind::getThreadData());
402
403 TLSBSSSection =
404 Ctx->getELFSection(".tbss", ELF::SHT_NOBITS,
405 ELF::SHF_ALLOC | ELF::SHF_TLS |
406 ELF::SHF_WRITE,
407 SectionKind::getThreadBSS());
408
409 DataRelSection =
410 Ctx->getELFSection(".data.rel", ELF::SHT_PROGBITS,
411 ELF::SHF_ALLOC |ELF::SHF_WRITE,
412 SectionKind::getDataRel());
413
414 DataRelLocalSection =
415 Ctx->getELFSection(".data.rel.local", ELF::SHT_PROGBITS,
416 ELF::SHF_ALLOC |ELF::SHF_WRITE,
417 SectionKind::getDataRelLocal());
418
419 DataRelROSection =
420 Ctx->getELFSection(".data.rel.ro", ELF::SHT_PROGBITS,
421 ELF::SHF_ALLOC |ELF::SHF_WRITE,
422 SectionKind::getReadOnlyWithRel());
423
424 DataRelROLocalSection =
425 Ctx->getELFSection(".data.rel.ro.local", ELF::SHT_PROGBITS,
426 ELF::SHF_ALLOC |ELF::SHF_WRITE,
427 SectionKind::getReadOnlyWithRelLocal());
428
429 MergeableConst4Section =
430 Ctx->getELFSection(".rodata.cst4", ELF::SHT_PROGBITS,
431 ELF::SHF_ALLOC |ELF::SHF_MERGE,
432 SectionKind::getMergeableConst4());
433
434 MergeableConst8Section =
435 Ctx->getELFSection(".rodata.cst8", ELF::SHT_PROGBITS,
436 ELF::SHF_ALLOC |ELF::SHF_MERGE,
437 SectionKind::getMergeableConst8());
438
439 MergeableConst16Section =
440 Ctx->getELFSection(".rodata.cst16", ELF::SHT_PROGBITS,
441 ELF::SHF_ALLOC |ELF::SHF_MERGE,
442 SectionKind::getMergeableConst16());
443
444 StaticCtorSection =
445 Ctx->getELFSection(".ctors", ELF::SHT_PROGBITS,
446 ELF::SHF_ALLOC |ELF::SHF_WRITE,
447 SectionKind::getDataRel());
448
449 StaticDtorSection =
450 Ctx->getELFSection(".dtors", ELF::SHT_PROGBITS,
451 ELF::SHF_ALLOC |ELF::SHF_WRITE,
452 SectionKind::getDataRel());
453
454 // Exception Handling Sections.
455
456 // FIXME: We're emitting LSDA info into a readonly section on ELF, even though
457 // it contains relocatable pointers. In PIC mode, this is probably a big
458 // runtime hit for C++ apps. Either the contents of the LSDA need to be
459 // adjusted or this should be a data section.
460 LSDASection =
461 Ctx->getELFSection(".gcc_except_table", ELF::SHT_PROGBITS,
462 ELF::SHF_ALLOC,
463 SectionKind::getReadOnly());
464
Craig Topperbb694de2014-04-13 04:57:38 +0000465 COFFDebugSymbolsSection = nullptr;
Timur Iskhodzhanovf166f6c2014-01-30 01:39:17 +0000466
Evan Cheng76792992011-07-20 05:58:47 +0000467 // Debug Info Sections.
468 DwarfAbbrevSection =
469 Ctx->getELFSection(".debug_abbrev", ELF::SHT_PROGBITS, 0,
470 SectionKind::getMetadata());
471 DwarfInfoSection =
472 Ctx->getELFSection(".debug_info", ELF::SHT_PROGBITS, 0,
473 SectionKind::getMetadata());
474 DwarfLineSection =
475 Ctx->getELFSection(".debug_line", ELF::SHT_PROGBITS, 0,
476 SectionKind::getMetadata());
477 DwarfFrameSection =
478 Ctx->getELFSection(".debug_frame", ELF::SHT_PROGBITS, 0,
479 SectionKind::getMetadata());
Krzysztof Parzyszek228daa62013-02-12 18:00:14 +0000480 DwarfPubNamesSection =
481 Ctx->getELFSection(".debug_pubnames", ELF::SHT_PROGBITS, 0,
482 SectionKind::getMetadata());
Evan Cheng76792992011-07-20 05:58:47 +0000483 DwarfPubTypesSection =
484 Ctx->getELFSection(".debug_pubtypes", ELF::SHT_PROGBITS, 0,
485 SectionKind::getMetadata());
Eric Christopherb0e76942013-09-09 20:03:14 +0000486 DwarfGnuPubNamesSection =
487 Ctx->getELFSection(".debug_gnu_pubnames", ELF::SHT_PROGBITS, 0,
488 SectionKind::getMetadata());
489 DwarfGnuPubTypesSection =
490 Ctx->getELFSection(".debug_gnu_pubtypes", ELF::SHT_PROGBITS, 0,
491 SectionKind::getMetadata());
Evan Cheng76792992011-07-20 05:58:47 +0000492 DwarfStrSection =
Nick Lewycky1a62d782011-10-26 18:44:32 +0000493 Ctx->getELFSection(".debug_str", ELF::SHT_PROGBITS,
494 ELF::SHF_MERGE | ELF::SHF_STRINGS,
495 SectionKind::getMergeable1ByteCString());
Evan Cheng76792992011-07-20 05:58:47 +0000496 DwarfLocSection =
497 Ctx->getELFSection(".debug_loc", ELF::SHT_PROGBITS, 0,
498 SectionKind::getMetadata());
499 DwarfARangesSection =
500 Ctx->getELFSection(".debug_aranges", ELF::SHT_PROGBITS, 0,
501 SectionKind::getMetadata());
502 DwarfRangesSection =
503 Ctx->getELFSection(".debug_ranges", ELF::SHT_PROGBITS, 0,
504 SectionKind::getMetadata());
505 DwarfMacroInfoSection =
506 Ctx->getELFSection(".debug_macinfo", ELF::SHT_PROGBITS, 0,
507 SectionKind::getMetadata());
Eric Christopher27ed8ec2012-11-28 02:49:34 +0000508
509 // DWARF5 Experimental Debug Info
510
511 // Accelerator Tables
Eric Christophera0ad67d2012-10-08 21:41:30 +0000512 DwarfAccelNamesSection =
513 Ctx->getELFSection(".apple_names", ELF::SHT_PROGBITS, 0,
514 SectionKind::getMetadata());
515 DwarfAccelObjCSection =
516 Ctx->getELFSection(".apple_objc", ELF::SHT_PROGBITS, 0,
517 SectionKind::getMetadata());
518 DwarfAccelNamespaceSection =
519 Ctx->getELFSection(".apple_namespaces", ELF::SHT_PROGBITS, 0,
520 SectionKind::getMetadata());
521 DwarfAccelTypesSection =
522 Ctx->getELFSection(".apple_types", ELF::SHT_PROGBITS, 0,
523 SectionKind::getMetadata());
Eric Christopherc3b434b2012-11-28 02:49:38 +0000524
525 // Fission Sections
526 DwarfInfoDWOSection =
527 Ctx->getELFSection(".debug_info.dwo", ELF::SHT_PROGBITS, 0,
528 SectionKind::getMetadata());
Eric Christopher3c230092012-11-30 06:47:06 +0000529 DwarfAbbrevDWOSection =
530 Ctx->getELFSection(".debug_abbrev.dwo", ELF::SHT_PROGBITS, 0,
531 SectionKind::getMetadata());
532 DwarfStrDWOSection =
533 Ctx->getELFSection(".debug_str.dwo", ELF::SHT_PROGBITS,
534 ELF::SHF_MERGE | ELF::SHF_STRINGS,
535 SectionKind::getMergeable1ByteCString());
536 DwarfLineDWOSection =
537 Ctx->getELFSection(".debug_line.dwo", ELF::SHT_PROGBITS, 0,
538 SectionKind::getMetadata());
539 DwarfLocDWOSection =
540 Ctx->getELFSection(".debug_loc.dwo", ELF::SHT_PROGBITS, 0,
541 SectionKind::getMetadata());
Eric Christopherc0fa8672013-01-04 17:59:22 +0000542 DwarfStrOffDWOSection =
543 Ctx->getELFSection(".debug_str_offsets.dwo", ELF::SHT_PROGBITS, 0,
544 SectionKind::getMetadata());
Eric Christopher962c9082013-01-15 23:56:56 +0000545 DwarfAddrSection =
546 Ctx->getELFSection(".debug_addr", ELF::SHT_PROGBITS, 0,
547 SectionKind::getMetadata());
Evan Cheng76792992011-07-20 05:58:47 +0000548}
549
550
551void MCObjectFileInfo::InitCOFFMCObjectFileInfo(Triple T) {
David Majnemera9bdb322014-04-08 22:33:40 +0000552 // The object file format cannot represent common symbols with explicit
553 // alignments.
554 CommDirectiveSupportsAlignment = false;
555
Evan Cheng76792992011-07-20 05:58:47 +0000556 // COFF
David Majnemer3d96acb2013-08-13 01:23:53 +0000557 BSSSection =
558 Ctx->getCOFFSection(".bss",
559 COFF::IMAGE_SCN_CNT_UNINITIALIZED_DATA |
560 COFF::IMAGE_SCN_MEM_READ |
561 COFF::IMAGE_SCN_MEM_WRITE,
562 SectionKind::getBSS());
Evan Cheng76792992011-07-20 05:58:47 +0000563 TextSection =
564 Ctx->getCOFFSection(".text",
565 COFF::IMAGE_SCN_CNT_CODE |
566 COFF::IMAGE_SCN_MEM_EXECUTE |
567 COFF::IMAGE_SCN_MEM_READ,
568 SectionKind::getText());
569 DataSection =
570 Ctx->getCOFFSection(".data",
571 COFF::IMAGE_SCN_CNT_INITIALIZED_DATA |
572 COFF::IMAGE_SCN_MEM_READ |
573 COFF::IMAGE_SCN_MEM_WRITE,
574 SectionKind::getDataRel());
575 ReadOnlySection =
576 Ctx->getCOFFSection(".rdata",
577 COFF::IMAGE_SCN_CNT_INITIALIZED_DATA |
578 COFF::IMAGE_SCN_MEM_READ,
579 SectionKind::getReadOnly());
Saleem Abdulrasooledbdd2e2014-03-27 22:50:05 +0000580 if (T.isKnownWindowsMSVCEnvironment()) {
Michael J. Spencerb560d072012-02-23 21:56:08 +0000581 StaticCtorSection =
582 Ctx->getCOFFSection(".CRT$XCU",
583 COFF::IMAGE_SCN_CNT_INITIALIZED_DATA |
584 COFF::IMAGE_SCN_MEM_READ,
585 SectionKind::getReadOnly());
586 } else {
587 StaticCtorSection =
588 Ctx->getCOFFSection(".ctors",
589 COFF::IMAGE_SCN_CNT_INITIALIZED_DATA |
590 COFF::IMAGE_SCN_MEM_READ |
591 COFF::IMAGE_SCN_MEM_WRITE,
592 SectionKind::getDataRel());
593 }
594
595
Saleem Abdulrasooledbdd2e2014-03-27 22:50:05 +0000596 if (T.isKnownWindowsMSVCEnvironment()) {
Anton Korobeynikov37d73002012-09-23 15:53:47 +0000597 StaticDtorSection =
598 Ctx->getCOFFSection(".CRT$XTX",
599 COFF::IMAGE_SCN_CNT_INITIALIZED_DATA |
600 COFF::IMAGE_SCN_MEM_READ,
601 SectionKind::getReadOnly());
602 } else {
603 StaticDtorSection =
604 Ctx->getCOFFSection(".dtors",
605 COFF::IMAGE_SCN_CNT_INITIALIZED_DATA |
606 COFF::IMAGE_SCN_MEM_READ |
607 COFF::IMAGE_SCN_MEM_WRITE,
608 SectionKind::getDataRel());
609 }
Evan Cheng76792992011-07-20 05:58:47 +0000610
611 // FIXME: We're emitting LSDA info into a readonly section on COFF, even
612 // though it contains relocatable pointers. In PIC mode, this is probably a
613 // big runtime hit for C++ apps. Either the contents of the LSDA need to be
614 // adjusted or this should be a data section.
Kai Nacke42097302013-07-08 04:43:23 +0000615 LSDASection =
616 Ctx->getCOFFSection(".gcc_except_table",
617 COFF::IMAGE_SCN_CNT_INITIALIZED_DATA |
618 COFF::IMAGE_SCN_MEM_READ,
619 SectionKind::getReadOnly());
Evan Cheng76792992011-07-20 05:58:47 +0000620
621 // Debug info.
Timur Iskhodzhanov31377c52014-01-28 03:48:44 +0000622 COFFDebugSymbolsSection =
623 Ctx->getCOFFSection(".debug$S",
624 COFF::IMAGE_SCN_MEM_DISCARDABLE |
625 COFF::IMAGE_SCN_CNT_INITIALIZED_DATA |
626 COFF::IMAGE_SCN_MEM_READ,
627 SectionKind::getMetadata());
628
Evan Cheng76792992011-07-20 05:58:47 +0000629 DwarfAbbrevSection =
630 Ctx->getCOFFSection(".debug_abbrev",
631 COFF::IMAGE_SCN_MEM_DISCARDABLE |
632 COFF::IMAGE_SCN_MEM_READ,
633 SectionKind::getMetadata());
634 DwarfInfoSection =
635 Ctx->getCOFFSection(".debug_info",
636 COFF::IMAGE_SCN_MEM_DISCARDABLE |
637 COFF::IMAGE_SCN_MEM_READ,
638 SectionKind::getMetadata());
639 DwarfLineSection =
640 Ctx->getCOFFSection(".debug_line",
641 COFF::IMAGE_SCN_MEM_DISCARDABLE |
642 COFF::IMAGE_SCN_MEM_READ,
643 SectionKind::getMetadata());
644 DwarfFrameSection =
645 Ctx->getCOFFSection(".debug_frame",
646 COFF::IMAGE_SCN_MEM_DISCARDABLE |
647 COFF::IMAGE_SCN_MEM_READ,
648 SectionKind::getMetadata());
Krzysztof Parzyszek228daa62013-02-12 18:00:14 +0000649 DwarfPubNamesSection =
650 Ctx->getCOFFSection(".debug_pubnames",
651 COFF::IMAGE_SCN_MEM_DISCARDABLE |
652 COFF::IMAGE_SCN_MEM_READ,
653 SectionKind::getMetadata());
Evan Cheng76792992011-07-20 05:58:47 +0000654 DwarfPubTypesSection =
655 Ctx->getCOFFSection(".debug_pubtypes",
656 COFF::IMAGE_SCN_MEM_DISCARDABLE |
657 COFF::IMAGE_SCN_MEM_READ,
658 SectionKind::getMetadata());
NAKAMURA Takumi0229e352013-09-10 06:01:56 +0000659 DwarfGnuPubNamesSection =
Eric Christopherb0e76942013-09-09 20:03:14 +0000660 Ctx->getCOFFSection(".debug_gnu_pubnames",
661 COFF::IMAGE_SCN_MEM_DISCARDABLE |
662 COFF::IMAGE_SCN_MEM_READ,
663 SectionKind::getMetadata());
NAKAMURA Takumi0229e352013-09-10 06:01:56 +0000664 DwarfGnuPubTypesSection =
Eric Christopherb0e76942013-09-09 20:03:14 +0000665 Ctx->getCOFFSection(".debug_gnu_pubtypes",
666 COFF::IMAGE_SCN_MEM_DISCARDABLE |
667 COFF::IMAGE_SCN_MEM_READ,
668 SectionKind::getMetadata());
Evan Cheng76792992011-07-20 05:58:47 +0000669 DwarfStrSection =
670 Ctx->getCOFFSection(".debug_str",
671 COFF::IMAGE_SCN_MEM_DISCARDABLE |
672 COFF::IMAGE_SCN_MEM_READ,
673 SectionKind::getMetadata());
674 DwarfLocSection =
675 Ctx->getCOFFSection(".debug_loc",
676 COFF::IMAGE_SCN_MEM_DISCARDABLE |
677 COFF::IMAGE_SCN_MEM_READ,
678 SectionKind::getMetadata());
679 DwarfARangesSection =
680 Ctx->getCOFFSection(".debug_aranges",
681 COFF::IMAGE_SCN_MEM_DISCARDABLE |
682 COFF::IMAGE_SCN_MEM_READ,
683 SectionKind::getMetadata());
684 DwarfRangesSection =
685 Ctx->getCOFFSection(".debug_ranges",
686 COFF::IMAGE_SCN_MEM_DISCARDABLE |
687 COFF::IMAGE_SCN_MEM_READ,
688 SectionKind::getMetadata());
689 DwarfMacroInfoSection =
690 Ctx->getCOFFSection(".debug_macinfo",
691 COFF::IMAGE_SCN_MEM_DISCARDABLE |
692 COFF::IMAGE_SCN_MEM_READ,
693 SectionKind::getMetadata());
David Blaikie62dd7df2014-03-26 03:05:10 +0000694 DwarfInfoDWOSection =
695 Ctx->getCOFFSection(".debug_info.dwo", COFF::IMAGE_SCN_MEM_DISCARDABLE |
696 COFF::IMAGE_SCN_MEM_READ,
697 SectionKind::getMetadata());
698 DwarfAbbrevDWOSection =
699 Ctx->getCOFFSection(".debug_abbrev.dwo", COFF::IMAGE_SCN_MEM_DISCARDABLE |
700 COFF::IMAGE_SCN_MEM_READ,
701 SectionKind::getMetadata());
702 DwarfStrDWOSection =
703 Ctx->getCOFFSection(".debug_str.dwo", COFF::IMAGE_SCN_MEM_DISCARDABLE |
704 COFF::IMAGE_SCN_MEM_READ,
705 SectionKind::getMetadata());
706 DwarfLineDWOSection =
707 Ctx->getCOFFSection(".debug_line.dwo", COFF::IMAGE_SCN_MEM_DISCARDABLE |
708 COFF::IMAGE_SCN_MEM_READ,
709 SectionKind::getMetadata());
710 DwarfLocDWOSection =
711 Ctx->getCOFFSection(".debug_loc.dwo", COFF::IMAGE_SCN_MEM_DISCARDABLE |
712 COFF::IMAGE_SCN_MEM_READ,
713 SectionKind::getMetadata());
714 DwarfStrOffDWOSection =
715 Ctx->getCOFFSection(".debug_str_offsets.dwo", COFF::IMAGE_SCN_MEM_DISCARDABLE |
716 COFF::IMAGE_SCN_MEM_READ,
717 SectionKind::getMetadata());
718 DwarfAddrSection = Ctx->getCOFFSection(
719 ".debug_addr", COFF::IMAGE_SCN_MEM_DISCARDABLE | COFF::IMAGE_SCN_MEM_READ,
720 SectionKind::getMetadata());
Evan Cheng76792992011-07-20 05:58:47 +0000721
722 DrectveSection =
723 Ctx->getCOFFSection(".drectve",
724 COFF::IMAGE_SCN_LNK_INFO,
725 SectionKind::getMetadata());
726
727 PDataSection =
728 Ctx->getCOFFSection(".pdata",
729 COFF::IMAGE_SCN_CNT_INITIALIZED_DATA |
Anton Korobeynikovcc8c5392012-08-08 12:46:46 +0000730 COFF::IMAGE_SCN_MEM_READ,
Evan Cheng76792992011-07-20 05:58:47 +0000731 SectionKind::getDataRel());
732
733 XDataSection =
734 Ctx->getCOFFSection(".xdata",
735 COFF::IMAGE_SCN_CNT_INITIALIZED_DATA |
Anton Korobeynikovcc8c5392012-08-08 12:46:46 +0000736 COFF::IMAGE_SCN_MEM_READ,
Evan Cheng76792992011-07-20 05:58:47 +0000737 SectionKind::getDataRel());
Anton Korobeynikovc6b40172012-02-11 17:26:53 +0000738 TLSDataSection =
739 Ctx->getCOFFSection(".tls$",
740 COFF::IMAGE_SCN_CNT_INITIALIZED_DATA |
741 COFF::IMAGE_SCN_MEM_READ |
742 COFF::IMAGE_SCN_MEM_WRITE,
743 SectionKind::getDataRel());
Evan Cheng76792992011-07-20 05:58:47 +0000744}
745
746void MCObjectFileInfo::InitMCObjectFileInfo(StringRef TT, Reloc::Model relocm,
Evan Chengbbf3b0d2011-07-20 19:50:42 +0000747 CodeModel::Model cm,
Evan Cheng76792992011-07-20 05:58:47 +0000748 MCContext &ctx) {
749 RelocM = relocm;
Evan Chengbbf3b0d2011-07-20 19:50:42 +0000750 CMModel = cm;
Evan Cheng76792992011-07-20 05:58:47 +0000751 Ctx = &ctx;
752
753 // Common.
754 CommDirectiveSupportsAlignment = true;
755 SupportsWeakOmittedEHFrame = true;
756 IsFunctionEHFrameSymbolPrivate = true;
Tim Northoverd1c6f512014-03-29 09:03:13 +0000757 SupportsCompactUnwindWithoutEHFrame = false;
Evan Chengbbf3b0d2011-07-20 19:50:42 +0000758
759 PersonalityEncoding = LSDAEncoding = FDEEncoding = FDECFIEncoding =
760 TTypeEncoding = dwarf::DW_EH_PE_absptr;
761
Bill Wendling2d1df6b2013-04-10 21:42:06 +0000762 CompactUnwindDwarfEHFrameOnly = 0;
763
Craig Topperbb694de2014-04-13 04:57:38 +0000764 EHFrameSection = nullptr; // Created on demand.
765 CompactUnwindSection = nullptr; // Used only by selected targets.
766 DwarfAccelNamesSection = nullptr; // Used only by selected targets.
767 DwarfAccelObjCSection = nullptr; // Used only by selected targets.
768 DwarfAccelNamespaceSection = nullptr; // Used only by selected targets.
769 DwarfAccelTypesSection = nullptr; // Used only by selected targets.
Evan Cheng76792992011-07-20 05:58:47 +0000770
771 Triple T(TT);
772 Triple::ArchType Arch = T.getArch();
773 // FIXME: Checking for Arch here to filter out bogus triples such as
774 // cellspu-apple-darwin. Perhaps we should fix in Triple?
775 if ((Arch == Triple::x86 || Arch == Triple::x86_64 ||
776 Arch == Triple::arm || Arch == Triple::thumb ||
Tim Northover00ed9962014-03-29 10:18:08 +0000777 Arch == Triple::arm64 ||
Evan Cheng76792992011-07-20 05:58:47 +0000778 Arch == Triple::ppc || Arch == Triple::ppc64 ||
779 Arch == Triple::UnknownArch) &&
Saleem Abdulrasool35476332014-03-06 20:47:11 +0000780 (T.isOSDarwin() || T.isOSBinFormatMachO())) {
Evan Cheng76792992011-07-20 05:58:47 +0000781 Env = IsMachO;
782 InitMachOMCObjectFileInfo(T);
Saleem Abdulrasool5715e522014-03-06 23:02:15 +0000783 } else if ((Arch == Triple::x86 || Arch == Triple::x86_64) &&
784 T.getObjectFormat() != Triple::ELF && T.isOSWindows()) {
Evan Cheng76792992011-07-20 05:58:47 +0000785 Env = IsCOFF;
786 InitCOFFMCObjectFileInfo(T);
787 } else {
788 Env = IsELF;
789 InitELFMCObjectFileInfo(T);
790 }
791}
792
David Blaikiebc563272013-12-13 21:33:40 +0000793const MCSection *MCObjectFileInfo::getDwarfTypesSection(uint64_t Hash) const {
794 return Ctx->getELFSection(".debug_types", ELF::SHT_PROGBITS, ELF::SHF_GROUP,
795 SectionKind::getMetadata(), 0, utostr(Hash));
796}
797
798const MCSection *
799MCObjectFileInfo::getDwarfTypesDWOSection(uint64_t Hash) const {
David Blaikie15ed5eb2014-01-10 01:38:41 +0000800 return Ctx->getELFSection(".debug_types.dwo", ELF::SHT_PROGBITS,
801 ELF::SHF_GROUP, SectionKind::getMetadata(), 0,
802 utostr(Hash));
David Blaikiebc563272013-12-13 21:33:40 +0000803}
804
David Chisnall85dd3092012-02-17 16:51:02 +0000805void MCObjectFileInfo::InitEHFrameSection() {
806 if (Env == IsMachO)
807 EHFrameSection =
808 Ctx->getMachOSection("__TEXT", "__eh_frame",
David Majnemer7b583052014-03-07 07:36:05 +0000809 MachO::S_COALESCED |
810 MachO::S_ATTR_NO_TOC |
811 MachO::S_ATTR_STRIP_STATIC_SYMS |
812 MachO::S_ATTR_LIVE_SUPPORT,
David Chisnall85dd3092012-02-17 16:51:02 +0000813 SectionKind::getReadOnly());
814 else if (Env == IsELF)
815 EHFrameSection =
David Chisnallbbec8722012-04-10 11:44:33 +0000816 Ctx->getELFSection(".eh_frame", EHSectionType,
David Chisnall07f8d3e2012-02-17 17:31:15 +0000817 EHSectionFlags,
David Chisnall85dd3092012-02-17 16:51:02 +0000818 SectionKind::getDataRel());
819 else
820 EHFrameSection =
821 Ctx->getCOFFSection(".eh_frame",
822 COFF::IMAGE_SCN_CNT_INITIALIZED_DATA |
823 COFF::IMAGE_SCN_MEM_READ |
824 COFF::IMAGE_SCN_MEM_WRITE,
825 SectionKind::getDataRel());
826}