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gerrit-public.fairphone.software / toolchain / llvm-project / bb694de64964b4026ca1fb2ec2dcb5023d4923ac / . / llvm / lib / MC / MCObjectFileInfo.cpp
blob: 3aa13ef465d4f4a65812323d70b17b16b5888559 [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"
Evan Cheng76792992011-07-20 05:58:47 +0000[diff] [blame]13#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 +0000[diff] [blame]18using namespace llvm;
19
20void MCObjectFileInfo::InitMachOMCObjectFileInfo(Triple T) {
21 // MachO
22 IsFunctionEHFrameSymbolPrivate = false;
23 SupportsWeakOmittedEHFrame = false;
24
Tim Northover00ed9962014-03-29 10:18:08 +0000[diff] [blame]25 if (T.isOSDarwin() && T.getArch() == Triple::arm64)
26 SupportsCompactUnwindWithoutEHFrame = true;
27
Evan Chengbbf3b0d2011-07-20 19:50:42 +0000[diff] [blame]28 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 +0000[diff] [blame]34 // .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 +0000[diff] [blame]40 MachO::S_ATTR_PURE_INSTRUCTIONS,
Evan Cheng76792992011-07-20 05:58:47 +0000[diff] [blame]41 SectionKind::getText());
42 DataSection // .data
43 = Ctx->getMachOSection("__DATA", "__data", 0,
44 SectionKind::getDataRel());
45
NAKAMURA Takumi68fa6f92013-09-21 02:34:45 +0000[diff] [blame]46 // BSSSection might not be expected initialized on msvc.
Craig Topperbb694de2014-04-13 04:57:38 +0000[diff] [blame^]47 BSSSection = nullptr;
NAKAMURA Takumi68fa6f92013-09-21 02:34:45 +0000[diff] [blame]48
Evan Cheng76792992011-07-20 05:58:47 +0000[diff] [blame]49 TLSDataSection // .tdata
50 = Ctx->getMachOSection("__DATA", "__thread_data",
David Majnemer7b583052014-03-07 07:36:05 +0000[diff] [blame]51 MachO::S_THREAD_LOCAL_REGULAR,
Evan Cheng76792992011-07-20 05:58:47 +0000[diff] [blame]52 SectionKind::getDataRel());
53 TLSBSSSection // .tbss
54 = Ctx->getMachOSection("__DATA", "__thread_bss",
David Majnemer7b583052014-03-07 07:36:05 +0000[diff] [blame]55 MachO::S_THREAD_LOCAL_ZEROFILL,
Evan Cheng76792992011-07-20 05:58:47 +0000[diff] [blame]56 SectionKind::getThreadBSS());
57
58 // TODO: Verify datarel below.
59 TLSTLVSection // .tlv
60 = Ctx->getMachOSection("__DATA", "__thread_vars",
David Majnemer7b583052014-03-07 07:36:05 +0000[diff] [blame]61 MachO::S_THREAD_LOCAL_VARIABLES,
Evan Cheng76792992011-07-20 05:58:47 +0000[diff] [blame]62 SectionKind::getDataRel());
63
64 TLSThreadInitSection
65 = Ctx->getMachOSection("__DATA", "__thread_init",
David Majnemer7b583052014-03-07 07:36:05 +0000[diff] [blame]66 MachO::S_THREAD_LOCAL_INIT_FUNCTION_POINTERS,
Jim Grosbach0dde3492011-11-15 16:46:22 +0000[diff] [blame]67 SectionKind::getDataRel());
Evan Cheng76792992011-07-20 05:58:47 +0000[diff] [blame]68
69 CStringSection // .cstring
70 = Ctx->getMachOSection("__TEXT", "__cstring",
David Majnemer7b583052014-03-07 07:36:05 +0000[diff] [blame]71 MachO::S_CSTRING_LITERALS,
Evan Cheng76792992011-07-20 05:58:47 +0000[diff] [blame]72 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 +0000[diff] [blame]78 MachO::S_4BYTE_LITERALS,
Evan Cheng76792992011-07-20 05:58:47 +0000[diff] [blame]79 SectionKind::getMergeableConst4());
80 EightByteConstantSection // .literal8
81 = Ctx->getMachOSection("__TEXT", "__literal8",
David Majnemer7b583052014-03-07 07:36:05 +0000[diff] [blame]82 MachO::S_8BYTE_LITERALS,
Evan Cheng76792992011-07-20 05:58:47 +0000[diff] [blame]83 SectionKind::getMergeableConst8());
84
Rafael Espindola1f3de492014-02-13 23:16:11 +0000[diff] [blame]85 SixteenByteConstantSection // .literal16
86 = Ctx->getMachOSection("__TEXT", "__literal16",
David Majnemer7b583052014-03-07 07:36:05 +0000[diff] [blame]87 MachO::S_16BYTE_LITERALS,
Rafael Espindola1f3de492014-02-13 23:16:11 +0000[diff] [blame]88 SectionKind::getMergeableConst16());
Evan Cheng76792992011-07-20 05:58:47 +0000[diff] [blame]89
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 +0000[diff] [blame]96 MachO::S_COALESCED |
97 MachO::S_ATTR_PURE_INSTRUCTIONS,
Evan Cheng76792992011-07-20 05:58:47 +0000[diff] [blame]98 SectionKind::getText());
99 ConstTextCoalSection
100 = Ctx->getMachOSection("__TEXT", "__const_coal",
David Majnemer7b583052014-03-07 07:36:05 +0000[diff] [blame]101 MachO::S_COALESCED,
Evan Cheng76792992011-07-20 05:58:47 +0000[diff] [blame]102 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 +0000[diff] [blame]108 MachO::S_COALESCED,
Evan Cheng76792992011-07-20 05:58:47 +0000[diff] [blame]109 SectionKind::getDataRel());
110 DataCommonSection
111 = Ctx->getMachOSection("__DATA","__common",
David Majnemer7b583052014-03-07 07:36:05 +0000[diff] [blame]112 MachO::S_ZEROFILL,
Evan Cheng76792992011-07-20 05:58:47 +0000[diff] [blame]113 SectionKind::getBSS());
114 DataBSSSection
David Majnemer7b583052014-03-07 07:36:05 +0000[diff] [blame]115 = Ctx->getMachOSection("__DATA","__bss", MachO::S_ZEROFILL,
Evan Cheng76792992011-07-20 05:58:47 +0000[diff] [blame]116 SectionKind::getBSS());
117
118
119 LazySymbolPointerSection
120 = Ctx->getMachOSection("__DATA", "__la_symbol_ptr",
David Majnemer7b583052014-03-07 07:36:05 +0000[diff] [blame]121 MachO::S_LAZY_SYMBOL_POINTERS,
Evan Cheng76792992011-07-20 05:58:47 +0000[diff] [blame]122 SectionKind::getMetadata());
123 NonLazySymbolPointerSection
124 = Ctx->getMachOSection("__DATA", "__nl_symbol_ptr",
David Majnemer7b583052014-03-07 07:36:05 +0000[diff] [blame]125 MachO::S_NON_LAZY_SYMBOL_POINTERS,
Evan Cheng76792992011-07-20 05:58:47 +0000[diff] [blame]126 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 +0000[diff] [blame]138 MachO::S_MOD_INIT_FUNC_POINTERS,
Evan Cheng76792992011-07-20 05:58:47 +0000[diff] [blame]139 SectionKind::getDataRel());
140 StaticDtorSection
141 = Ctx->getMachOSection("__DATA", "__mod_term_func",
David Majnemer7b583052014-03-07 07:36:05 +0000[diff] [blame]142 MachO::S_MOD_TERM_FUNC_POINTERS,
Evan Cheng76792992011-07-20 05:58:47 +0000[diff] [blame]143 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 +0000[diff] [blame^]150 COFFDebugSymbolsSection = nullptr;
Timur Iskhodzhanovf166f6c2014-01-30 01:39:17 +0000[diff] [blame]151
Tim Northover00ed9962014-03-29 10:18:08 +0000[diff] [blame]152 if ((T.isMacOSX() && !T.isMacOSXVersionLT(10, 6)) ||
153 (T.isOSDarwin() && T.getArch() == Triple::arm64)) {
Evan Cheng76792992011-07-20 05:58:47 +0000[diff] [blame]154 CompactUnwindSection =
155 Ctx->getMachOSection("__LD", "__compact_unwind",
David Majnemer7b583052014-03-07 07:36:05 +0000[diff] [blame]156 MachO::S_ATTR_DEBUG,
Evan Cheng76792992011-07-20 05:58:47 +0000[diff] [blame]157 SectionKind::getReadOnly());
158
Bill Wendling2d1df6b2013-04-10 21:42:06 +0000[diff] [blame]159 if (T.getArch() == Triple::x86_64 || T.getArch() == Triple::x86)
160 CompactUnwindDwarfEHFrameOnly = 0x04000000;
Tim Northover00ed9962014-03-29 10:18:08 +0000[diff] [blame]161 else if (T.getArch() == Triple::arm64)
162 CompactUnwindDwarfEHFrameOnly = 0x03000000;
Bill Wendling2d1df6b2013-04-10 21:42:06 +0000[diff] [blame]163 }
164
Evan Cheng76792992011-07-20 05:58:47 +0000[diff] [blame]165 // Debug Information.
Eric Christopher4996c702011-11-07 09:24:32 +0000[diff] [blame]166 DwarfAccelNamesSection =
167 Ctx->getMachOSection("__DWARF", "__apple_names",
David Majnemer7b583052014-03-07 07:36:05 +0000[diff] [blame]168 MachO::S_ATTR_DEBUG,
Eric Christopher4996c702011-11-07 09:24:32 +0000[diff] [blame]169 SectionKind::getMetadata());
170 DwarfAccelObjCSection =
171 Ctx->getMachOSection("__DWARF", "__apple_objc",
David Majnemer7b583052014-03-07 07:36:05 +0000[diff] [blame]172 MachO::S_ATTR_DEBUG,
Eric Christopher4996c702011-11-07 09:24:32 +0000[diff] [blame]173 SectionKind::getMetadata());
174 // 16 character section limit...
175 DwarfAccelNamespaceSection =
176 Ctx->getMachOSection("__DWARF", "__apple_namespac",
David Majnemer7b583052014-03-07 07:36:05 +0000[diff] [blame]177 MachO::S_ATTR_DEBUG,
Eric Christopher4996c702011-11-07 09:24:32 +0000[diff] [blame]178 SectionKind::getMetadata());
179 DwarfAccelTypesSection =
180 Ctx->getMachOSection("__DWARF", "__apple_types",
David Majnemer7b583052014-03-07 07:36:05 +0000[diff] [blame]181 MachO::S_ATTR_DEBUG,
Eric Christopher4996c702011-11-07 09:24:32 +0000[diff] [blame]182 SectionKind::getMetadata());
Jim Grosbachdc1e36e2012-05-11 01:41:30 +0000[diff] [blame]183
Evan Cheng76792992011-07-20 05:58:47 +0000[diff] [blame]184 DwarfAbbrevSection =
185 Ctx->getMachOSection("__DWARF", "__debug_abbrev",
David Majnemer7b583052014-03-07 07:36:05 +0000[diff] [blame]186 MachO::S_ATTR_DEBUG,
Evan Cheng76792992011-07-20 05:58:47 +0000[diff] [blame]187 SectionKind::getMetadata());
188 DwarfInfoSection =
189 Ctx->getMachOSection("__DWARF", "__debug_info",
David Majnemer7b583052014-03-07 07:36:05 +0000[diff] [blame]190 MachO::S_ATTR_DEBUG,
Evan Cheng76792992011-07-20 05:58:47 +0000[diff] [blame]191 SectionKind::getMetadata());
192 DwarfLineSection =
193 Ctx->getMachOSection("__DWARF", "__debug_line",
David Majnemer7b583052014-03-07 07:36:05 +0000[diff] [blame]194 MachO::S_ATTR_DEBUG,
Evan Cheng76792992011-07-20 05:58:47 +0000[diff] [blame]195 SectionKind::getMetadata());
196 DwarfFrameSection =
197 Ctx->getMachOSection("__DWARF", "__debug_frame",
David Majnemer7b583052014-03-07 07:36:05 +0000[diff] [blame]198 MachO::S_ATTR_DEBUG,
Evan Cheng76792992011-07-20 05:58:47 +0000[diff] [blame]199 SectionKind::getMetadata());
Krzysztof Parzyszek228daa62013-02-12 18:00:14 +0000[diff] [blame]200 DwarfPubNamesSection =
201 Ctx->getMachOSection("__DWARF", "__debug_pubnames",
David Majnemer7b583052014-03-07 07:36:05 +0000[diff] [blame]202 MachO::S_ATTR_DEBUG,
Krzysztof Parzyszek228daa62013-02-12 18:00:14 +0000[diff] [blame]203 SectionKind::getMetadata());
Evan Cheng76792992011-07-20 05:58:47 +0000[diff] [blame]204 DwarfPubTypesSection =
205 Ctx->getMachOSection("__DWARF", "__debug_pubtypes",
David Majnemer7b583052014-03-07 07:36:05 +0000[diff] [blame]206 MachO::S_ATTR_DEBUG,
Evan Cheng76792992011-07-20 05:58:47 +0000[diff] [blame]207 SectionKind::getMetadata());
Eric Christopherb0e76942013-09-09 20:03:14 +0000[diff] [blame]208 DwarfGnuPubNamesSection =
209 Ctx->getMachOSection("__DWARF", "__debug_gnu_pubn",
David Majnemer7b583052014-03-07 07:36:05 +0000[diff] [blame]210 MachO::S_ATTR_DEBUG,
Eric Christopherb0e76942013-09-09 20:03:14 +0000[diff] [blame]211 SectionKind::getMetadata());
212 DwarfGnuPubTypesSection =
213 Ctx->getMachOSection("__DWARF", "__debug_gnu_pubt",
David Majnemer7b583052014-03-07 07:36:05 +0000[diff] [blame]214 MachO::S_ATTR_DEBUG,
Eric Christopherb0e76942013-09-09 20:03:14 +0000[diff] [blame]215 SectionKind::getMetadata());
Evan Cheng76792992011-07-20 05:58:47 +0000[diff] [blame]216 DwarfStrSection =
217 Ctx->getMachOSection("__DWARF", "__debug_str",
David Majnemer7b583052014-03-07 07:36:05 +0000[diff] [blame]218 MachO::S_ATTR_DEBUG,
Evan Cheng76792992011-07-20 05:58:47 +0000[diff] [blame]219 SectionKind::getMetadata());
220 DwarfLocSection =
221 Ctx->getMachOSection("__DWARF", "__debug_loc",
David Majnemer7b583052014-03-07 07:36:05 +0000[diff] [blame]222 MachO::S_ATTR_DEBUG,
Evan Cheng76792992011-07-20 05:58:47 +0000[diff] [blame]223 SectionKind::getMetadata());
224 DwarfARangesSection =
225 Ctx->getMachOSection("__DWARF", "__debug_aranges",
David Majnemer7b583052014-03-07 07:36:05 +0000[diff] [blame]226 MachO::S_ATTR_DEBUG,
Evan Cheng76792992011-07-20 05:58:47 +0000[diff] [blame]227 SectionKind::getMetadata());
228 DwarfRangesSection =
229 Ctx->getMachOSection("__DWARF", "__debug_ranges",
David Majnemer7b583052014-03-07 07:36:05 +0000[diff] [blame]230 MachO::S_ATTR_DEBUG,
Evan Cheng76792992011-07-20 05:58:47 +0000[diff] [blame]231 SectionKind::getMetadata());
232 DwarfMacroInfoSection =
233 Ctx->getMachOSection("__DWARF", "__debug_macinfo",
David Majnemer7b583052014-03-07 07:36:05 +0000[diff] [blame]234 MachO::S_ATTR_DEBUG,
Evan Cheng76792992011-07-20 05:58:47 +0000[diff] [blame]235 SectionKind::getMetadata());
236 DwarfDebugInlineSection =
237 Ctx->getMachOSection("__DWARF", "__debug_inlined",
David Majnemer7b583052014-03-07 07:36:05 +0000[diff] [blame]238 MachO::S_ATTR_DEBUG,
Evan Cheng76792992011-07-20 05:58:47 +0000[diff] [blame]239 SectionKind::getMetadata());
Lang Hames30789772013-11-08 22:14:49 +0000[diff] [blame]240 StackMapSection =
241 Ctx->getMachOSection("__LLVM_STACKMAPS", "__llvm_stackmaps", 0,
242 SectionKind::getMetadata());
Evan Cheng76792992011-07-20 05:58:47 +0000[diff] [blame]243
244 TLSExtraDataSection = TLSTLVSection;
245}
246
247void MCObjectFileInfo::InitELFMCObjectFileInfo(Triple T) {
Rafael Espindolab9b7ae02013-04-03 03:13:19 +0000[diff] [blame]248 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 +0000[diff] [blame]255 FDECFIEncoding = dwarf::DW_EH_PE_pcrel | dwarf::DW_EH_PE_sdata4;
256
Evan Chengbbf3b0d2011-07-20 19:50:42 +0000[diff] [blame]257 if (T.getArch() == Triple::x86) {
258 PersonalityEncoding = (RelocM == Reloc::PIC_)
Jim Grosbach0dde3492011-11-15 16:46:22 +0000[diff] [blame]259 ? 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 +0000[diff] [blame]261 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 +0000[diff] [blame]264 FDEEncoding = (RelocM == Reloc::PIC_)
Evan Chengbbf3b0d2011-07-20 19:50:42 +0000[diff] [blame]265 ? 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 +0000[diff] [blame]268 ? 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 +0000[diff] [blame]270 } else if (T.getArch() == Triple::x86_64) {
Evan Chengbbf3b0d2011-07-20 19:50:42 +0000[diff] [blame]271 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 }
Christian Pirker99974c72014-03-26 14:57:32 +0000[diff] [blame]292 } else if (T.getArch() == Triple::aarch64 ||
293 T.getArch() == Triple::aarch64_be ) {
Tim Northovere0e3aef2013-01-31 12:12:40 +0000[diff] [blame]294 // The small model guarantees static code/data size < 4GB, but not where it
295 // will be in memory. Most of these could end up >2GB away so even a signed
296 // pc-relative 32-bit address is insufficient, theoretically.
297 if (RelocM == Reloc::PIC_) {
298 PersonalityEncoding = dwarf::DW_EH_PE_indirect | dwarf::DW_EH_PE_pcrel |
299 dwarf::DW_EH_PE_sdata8;
300 LSDAEncoding = dwarf::DW_EH_PE_pcrel | dwarf::DW_EH_PE_sdata8;
301 FDEEncoding = dwarf::DW_EH_PE_pcrel | dwarf::DW_EH_PE_sdata4;
302 TTypeEncoding = dwarf::DW_EH_PE_indirect | dwarf::DW_EH_PE_pcrel |
303 dwarf::DW_EH_PE_sdata8;
304 } else {
305 PersonalityEncoding = dwarf::DW_EH_PE_absptr;
306 LSDAEncoding = dwarf::DW_EH_PE_absptr;
307 FDEEncoding = dwarf::DW_EH_PE_udata4;
308 TTypeEncoding = dwarf::DW_EH_PE_absptr;
309 }
Bill Schmidt0a9170d2013-07-26 01:35:43 +0000[diff] [blame]310 } else if (T.getArch() == Triple::ppc64 || T.getArch() == Triple::ppc64le) {
Adhemerval Zanella1ae22482013-01-09 17:08:15 +0000[diff] [blame]311 PersonalityEncoding = dwarf::DW_EH_PE_indirect | dwarf::DW_EH_PE_pcrel |
312 dwarf::DW_EH_PE_udata8;
Adhemerval Zanella1ae22482013-01-09 17:08:15 +0000[diff] [blame]313 LSDAEncoding = dwarf::DW_EH_PE_pcrel | dwarf::DW_EH_PE_udata8;
314 FDEEncoding = dwarf::DW_EH_PE_pcrel | dwarf::DW_EH_PE_udata8;
315 TTypeEncoding = dwarf::DW_EH_PE_indirect | dwarf::DW_EH_PE_pcrel |
316 dwarf::DW_EH_PE_udata8;
Jakob Stoklund Olesen83c67732014-01-28 02:52:26 +0000[diff] [blame]317 } else if (T.getArch() == Triple::sparc) {
318 if (RelocM == Reloc::PIC_) {
319 LSDAEncoding = dwarf::DW_EH_PE_pcrel | dwarf::DW_EH_PE_sdata4;
320 PersonalityEncoding = dwarf::DW_EH_PE_indirect | dwarf::DW_EH_PE_pcrel |
321 dwarf::DW_EH_PE_sdata4;
322 FDEEncoding = dwarf::DW_EH_PE_pcrel | dwarf::DW_EH_PE_sdata4;
323 TTypeEncoding = dwarf::DW_EH_PE_indirect | dwarf::DW_EH_PE_pcrel |
324 dwarf::DW_EH_PE_sdata4;
325 } else {
326 LSDAEncoding = dwarf::DW_EH_PE_absptr;
327 PersonalityEncoding = dwarf::DW_EH_PE_absptr;
328 FDEEncoding = dwarf::DW_EH_PE_udata4;
329 TTypeEncoding = dwarf::DW_EH_PE_absptr;
330 }
331 } else if (T.getArch() == Triple::sparcv9) {
332 LSDAEncoding = dwarf::DW_EH_PE_pcrel | dwarf::DW_EH_PE_sdata4;
333 if (RelocM == Reloc::PIC_) {
334 PersonalityEncoding = dwarf::DW_EH_PE_indirect | dwarf::DW_EH_PE_pcrel |
335 dwarf::DW_EH_PE_sdata4;
336 FDEEncoding = dwarf::DW_EH_PE_pcrel | dwarf::DW_EH_PE_sdata4;
337 TTypeEncoding = dwarf::DW_EH_PE_indirect | dwarf::DW_EH_PE_pcrel |
338 dwarf::DW_EH_PE_sdata4;
339 } else {
340 PersonalityEncoding = dwarf::DW_EH_PE_absptr;
341 FDEEncoding = dwarf::DW_EH_PE_udata4;
342 TTypeEncoding = dwarf::DW_EH_PE_absptr;
343 }
Ulrich Weigand0213e7f2013-05-06 16:11:12 +0000[diff] [blame]344 } else if (T.getArch() == Triple::systemz) {
345 // All currently-defined code models guarantee that 4-byte PC-relative
346 // values will be in range.
Ulrich Weigande7c6dfe2013-05-06 17:28:30 +0000[diff] [blame]347 if (RelocM == Reloc::PIC_) {
348 PersonalityEncoding = dwarf::DW_EH_PE_indirect | dwarf::DW_EH_PE_pcrel |
349 dwarf::DW_EH_PE_sdata4;
350 LSDAEncoding = dwarf::DW_EH_PE_pcrel | dwarf::DW_EH_PE_sdata4;
351 FDEEncoding = dwarf::DW_EH_PE_pcrel | dwarf::DW_EH_PE_sdata4;
352 TTypeEncoding = dwarf::DW_EH_PE_indirect | dwarf::DW_EH_PE_pcrel |
353 dwarf::DW_EH_PE_sdata4;
354 } else {
355 PersonalityEncoding = dwarf::DW_EH_PE_absptr;
356 LSDAEncoding = dwarf::DW_EH_PE_absptr;
357 FDEEncoding = dwarf::DW_EH_PE_absptr;
358 TTypeEncoding = dwarf::DW_EH_PE_absptr;
359 }
Evan Chengbbf3b0d2011-07-20 19:50:42 +0000[diff] [blame]360 }
361
David Chisnall07f8d3e2012-02-17 17:31:15 +0000[diff] [blame]362 // Solaris requires different flags for .eh_frame to seemingly every other
363 // platform.
David Chisnallbbec8722012-04-10 11:44:33 +0000[diff] [blame]364 EHSectionType = ELF::SHT_PROGBITS;
David Chisnall07f8d3e2012-02-17 17:31:15 +0000[diff] [blame]365 EHSectionFlags = ELF::SHF_ALLOC;
David Chisnallbbec8722012-04-10 11:44:33 +0000[diff] [blame]366 if (T.getOS() == Triple::Solaris) {
367 if (T.getArch() == Triple::x86_64)
368 EHSectionType = ELF::SHT_X86_64_UNWIND;
369 else
370 EHSectionFlags |= ELF::SHF_WRITE;
371 }
David Chisnall07f8d3e2012-02-17 17:31:15 +0000[diff] [blame]372
373
Evan Cheng76792992011-07-20 05:58:47 +0000[diff] [blame]374 // ELF
375 BSSSection =
376 Ctx->getELFSection(".bss", ELF::SHT_NOBITS,
Anton Korobeynikov7722a2d2012-01-25 22:24:19 +0000[diff] [blame]377 ELF::SHF_WRITE | ELF::SHF_ALLOC,
Evan Cheng76792992011-07-20 05:58:47 +0000[diff] [blame]378 SectionKind::getBSS());
379
380 TextSection =
381 Ctx->getELFSection(".text", ELF::SHT_PROGBITS,
382 ELF::SHF_EXECINSTR |
383 ELF::SHF_ALLOC,
384 SectionKind::getText());
385
386 DataSection =
387 Ctx->getELFSection(".data", ELF::SHT_PROGBITS,
388 ELF::SHF_WRITE |ELF::SHF_ALLOC,
389 SectionKind::getDataRel());
390
391 ReadOnlySection =
392 Ctx->getELFSection(".rodata", ELF::SHT_PROGBITS,
393 ELF::SHF_ALLOC,
394 SectionKind::getReadOnly());
395
396 TLSDataSection =
397 Ctx->getELFSection(".tdata", ELF::SHT_PROGBITS,
398 ELF::SHF_ALLOC | ELF::SHF_TLS |
399 ELF::SHF_WRITE,
400 SectionKind::getThreadData());
401
402 TLSBSSSection =
403 Ctx->getELFSection(".tbss", ELF::SHT_NOBITS,
404 ELF::SHF_ALLOC | ELF::SHF_TLS |
405 ELF::SHF_WRITE,
406 SectionKind::getThreadBSS());
407
408 DataRelSection =
409 Ctx->getELFSection(".data.rel", ELF::SHT_PROGBITS,
410 ELF::SHF_ALLOC |ELF::SHF_WRITE,
411 SectionKind::getDataRel());
412
413 DataRelLocalSection =
414 Ctx->getELFSection(".data.rel.local", ELF::SHT_PROGBITS,
415 ELF::SHF_ALLOC |ELF::SHF_WRITE,
416 SectionKind::getDataRelLocal());
417
418 DataRelROSection =
419 Ctx->getELFSection(".data.rel.ro", ELF::SHT_PROGBITS,
420 ELF::SHF_ALLOC |ELF::SHF_WRITE,
421 SectionKind::getReadOnlyWithRel());
422
423 DataRelROLocalSection =
424 Ctx->getELFSection(".data.rel.ro.local", ELF::SHT_PROGBITS,
425 ELF::SHF_ALLOC |ELF::SHF_WRITE,
426 SectionKind::getReadOnlyWithRelLocal());
427
428 MergeableConst4Section =
429 Ctx->getELFSection(".rodata.cst4", ELF::SHT_PROGBITS,
430 ELF::SHF_ALLOC |ELF::SHF_MERGE,
431 SectionKind::getMergeableConst4());
432
433 MergeableConst8Section =
434 Ctx->getELFSection(".rodata.cst8", ELF::SHT_PROGBITS,
435 ELF::SHF_ALLOC |ELF::SHF_MERGE,
436 SectionKind::getMergeableConst8());
437
438 MergeableConst16Section =
439 Ctx->getELFSection(".rodata.cst16", ELF::SHT_PROGBITS,
440 ELF::SHF_ALLOC |ELF::SHF_MERGE,
441 SectionKind::getMergeableConst16());
442
443 StaticCtorSection =
444 Ctx->getELFSection(".ctors", ELF::SHT_PROGBITS,
445 ELF::SHF_ALLOC |ELF::SHF_WRITE,
446 SectionKind::getDataRel());
447
448 StaticDtorSection =
449 Ctx->getELFSection(".dtors", ELF::SHT_PROGBITS,
450 ELF::SHF_ALLOC |ELF::SHF_WRITE,
451 SectionKind::getDataRel());
452
453 // Exception Handling Sections.
454
455 // FIXME: We're emitting LSDA info into a readonly section on ELF, even though
456 // it contains relocatable pointers. In PIC mode, this is probably a big
457 // runtime hit for C++ apps. Either the contents of the LSDA need to be
458 // adjusted or this should be a data section.
459 LSDASection =
460 Ctx->getELFSection(".gcc_except_table", ELF::SHT_PROGBITS,
461 ELF::SHF_ALLOC,
462 SectionKind::getReadOnly());
463
Craig Topperbb694de2014-04-13 04:57:38 +0000[diff] [blame^]464 COFFDebugSymbolsSection = nullptr;
Timur Iskhodzhanovf166f6c2014-01-30 01:39:17 +0000[diff] [blame]465
Evan Cheng76792992011-07-20 05:58:47 +0000[diff] [blame]466 // Debug Info Sections.
467 DwarfAbbrevSection =
468 Ctx->getELFSection(".debug_abbrev", ELF::SHT_PROGBITS, 0,
469 SectionKind::getMetadata());
470 DwarfInfoSection =
471 Ctx->getELFSection(".debug_info", ELF::SHT_PROGBITS, 0,
472 SectionKind::getMetadata());
473 DwarfLineSection =
474 Ctx->getELFSection(".debug_line", ELF::SHT_PROGBITS, 0,
475 SectionKind::getMetadata());
476 DwarfFrameSection =
477 Ctx->getELFSection(".debug_frame", ELF::SHT_PROGBITS, 0,
478 SectionKind::getMetadata());
Krzysztof Parzyszek228daa62013-02-12 18:00:14 +0000[diff] [blame]479 DwarfPubNamesSection =
480 Ctx->getELFSection(".debug_pubnames", ELF::SHT_PROGBITS, 0,
481 SectionKind::getMetadata());
Evan Cheng76792992011-07-20 05:58:47 +0000[diff] [blame]482 DwarfPubTypesSection =
483 Ctx->getELFSection(".debug_pubtypes", ELF::SHT_PROGBITS, 0,
484 SectionKind::getMetadata());
Eric Christopherb0e76942013-09-09 20:03:14 +0000[diff] [blame]485 DwarfGnuPubNamesSection =
486 Ctx->getELFSection(".debug_gnu_pubnames", ELF::SHT_PROGBITS, 0,
487 SectionKind::getMetadata());
488 DwarfGnuPubTypesSection =
489 Ctx->getELFSection(".debug_gnu_pubtypes", ELF::SHT_PROGBITS, 0,
490 SectionKind::getMetadata());
Evan Cheng76792992011-07-20 05:58:47 +0000[diff] [blame]491 DwarfStrSection =
Nick Lewycky1a62d782011-10-26 18:44:32 +0000[diff] [blame]492 Ctx->getELFSection(".debug_str", ELF::SHT_PROGBITS,
493 ELF::SHF_MERGE | ELF::SHF_STRINGS,
494 SectionKind::getMergeable1ByteCString());
Evan Cheng76792992011-07-20 05:58:47 +0000[diff] [blame]495 DwarfLocSection =
496 Ctx->getELFSection(".debug_loc", ELF::SHT_PROGBITS, 0,
497 SectionKind::getMetadata());
498 DwarfARangesSection =
499 Ctx->getELFSection(".debug_aranges", ELF::SHT_PROGBITS, 0,
500 SectionKind::getMetadata());
501 DwarfRangesSection =
502 Ctx->getELFSection(".debug_ranges", ELF::SHT_PROGBITS, 0,
503 SectionKind::getMetadata());
504 DwarfMacroInfoSection =
505 Ctx->getELFSection(".debug_macinfo", ELF::SHT_PROGBITS, 0,
506 SectionKind::getMetadata());
Eric Christopher27ed8ec2012-11-28 02:49:34 +0000[diff] [blame]507
508 // DWARF5 Experimental Debug Info
509
510 // Accelerator Tables
Eric Christophera0ad67d2012-10-08 21:41:30 +0000[diff] [blame]511 DwarfAccelNamesSection =
512 Ctx->getELFSection(".apple_names", ELF::SHT_PROGBITS, 0,
513 SectionKind::getMetadata());
514 DwarfAccelObjCSection =
515 Ctx->getELFSection(".apple_objc", ELF::SHT_PROGBITS, 0,
516 SectionKind::getMetadata());
517 DwarfAccelNamespaceSection =
518 Ctx->getELFSection(".apple_namespaces", ELF::SHT_PROGBITS, 0,
519 SectionKind::getMetadata());
520 DwarfAccelTypesSection =
521 Ctx->getELFSection(".apple_types", ELF::SHT_PROGBITS, 0,
522 SectionKind::getMetadata());
Eric Christopherc3b434b2012-11-28 02:49:38 +0000[diff] [blame]523
524 // Fission Sections
525 DwarfInfoDWOSection =
526 Ctx->getELFSection(".debug_info.dwo", ELF::SHT_PROGBITS, 0,
527 SectionKind::getMetadata());
Eric Christopher3c230092012-11-30 06:47:06 +0000[diff] [blame]528 DwarfAbbrevDWOSection =
529 Ctx->getELFSection(".debug_abbrev.dwo", ELF::SHT_PROGBITS, 0,
530 SectionKind::getMetadata());
531 DwarfStrDWOSection =
532 Ctx->getELFSection(".debug_str.dwo", ELF::SHT_PROGBITS,
533 ELF::SHF_MERGE | ELF::SHF_STRINGS,
534 SectionKind::getMergeable1ByteCString());
535 DwarfLineDWOSection =
536 Ctx->getELFSection(".debug_line.dwo", ELF::SHT_PROGBITS, 0,
537 SectionKind::getMetadata());
538 DwarfLocDWOSection =
539 Ctx->getELFSection(".debug_loc.dwo", ELF::SHT_PROGBITS, 0,
540 SectionKind::getMetadata());
Eric Christopherc0fa8672013-01-04 17:59:22 +0000[diff] [blame]541 DwarfStrOffDWOSection =
542 Ctx->getELFSection(".debug_str_offsets.dwo", ELF::SHT_PROGBITS, 0,
543 SectionKind::getMetadata());
Eric Christopher962c9082013-01-15 23:56:56 +0000[diff] [blame]544 DwarfAddrSection =
545 Ctx->getELFSection(".debug_addr", ELF::SHT_PROGBITS, 0,
546 SectionKind::getMetadata());
Evan Cheng76792992011-07-20 05:58:47 +0000[diff] [blame]547}
548
549
550void MCObjectFileInfo::InitCOFFMCObjectFileInfo(Triple T) {
David Majnemera9bdb322014-04-08 22:33:40 +0000[diff] [blame]551 // The object file format cannot represent common symbols with explicit
552 // alignments.
553 CommDirectiveSupportsAlignment = false;
554
Evan Cheng76792992011-07-20 05:58:47 +0000[diff] [blame]555 // COFF
David Majnemer3d96acb2013-08-13 01:23:53 +0000[diff] [blame]556 BSSSection =
557 Ctx->getCOFFSection(".bss",
558 COFF::IMAGE_SCN_CNT_UNINITIALIZED_DATA |
559 COFF::IMAGE_SCN_MEM_READ |
560 COFF::IMAGE_SCN_MEM_WRITE,
561 SectionKind::getBSS());
Evan Cheng76792992011-07-20 05:58:47 +0000[diff] [blame]562 TextSection =
563 Ctx->getCOFFSection(".text",
564 COFF::IMAGE_SCN_CNT_CODE |
565 COFF::IMAGE_SCN_MEM_EXECUTE |
566 COFF::IMAGE_SCN_MEM_READ,
567 SectionKind::getText());
568 DataSection =
569 Ctx->getCOFFSection(".data",
570 COFF::IMAGE_SCN_CNT_INITIALIZED_DATA |
571 COFF::IMAGE_SCN_MEM_READ |
572 COFF::IMAGE_SCN_MEM_WRITE,
573 SectionKind::getDataRel());
574 ReadOnlySection =
575 Ctx->getCOFFSection(".rdata",
576 COFF::IMAGE_SCN_CNT_INITIALIZED_DATA |
577 COFF::IMAGE_SCN_MEM_READ,
578 SectionKind::getReadOnly());
Saleem Abdulrasooledbdd2e2014-03-27 22:50:05 +0000[diff] [blame]579 if (T.isKnownWindowsMSVCEnvironment()) {
Michael J. Spencerb560d072012-02-23 21:56:08 +0000[diff] [blame]580 StaticCtorSection =
581 Ctx->getCOFFSection(".CRT$XCU",
582 COFF::IMAGE_SCN_CNT_INITIALIZED_DATA |
583 COFF::IMAGE_SCN_MEM_READ,
584 SectionKind::getReadOnly());
585 } else {
586 StaticCtorSection =
587 Ctx->getCOFFSection(".ctors",
588 COFF::IMAGE_SCN_CNT_INITIALIZED_DATA |
589 COFF::IMAGE_SCN_MEM_READ |
590 COFF::IMAGE_SCN_MEM_WRITE,
591 SectionKind::getDataRel());
592 }
593
594
Saleem Abdulrasooledbdd2e2014-03-27 22:50:05 +0000[diff] [blame]595 if (T.isKnownWindowsMSVCEnvironment()) {
Anton Korobeynikov37d73002012-09-23 15:53:47 +0000[diff] [blame]596 StaticDtorSection =
597 Ctx->getCOFFSection(".CRT$XTX",
598 COFF::IMAGE_SCN_CNT_INITIALIZED_DATA |
599 COFF::IMAGE_SCN_MEM_READ,
600 SectionKind::getReadOnly());
601 } else {
602 StaticDtorSection =
603 Ctx->getCOFFSection(".dtors",
604 COFF::IMAGE_SCN_CNT_INITIALIZED_DATA |
605 COFF::IMAGE_SCN_MEM_READ |
606 COFF::IMAGE_SCN_MEM_WRITE,
607 SectionKind::getDataRel());
608 }
Evan Cheng76792992011-07-20 05:58:47 +0000[diff] [blame]609
610 // FIXME: We're emitting LSDA info into a readonly section on COFF, even
611 // though it contains relocatable pointers. In PIC mode, this is probably a
612 // big runtime hit for C++ apps. Either the contents of the LSDA need to be
613 // adjusted or this should be a data section.
Kai Nacke42097302013-07-08 04:43:23 +0000[diff] [blame]614 LSDASection =
615 Ctx->getCOFFSection(".gcc_except_table",
616 COFF::IMAGE_SCN_CNT_INITIALIZED_DATA |
617 COFF::IMAGE_SCN_MEM_READ,
618 SectionKind::getReadOnly());
Evan Cheng76792992011-07-20 05:58:47 +0000[diff] [blame]619
620 // Debug info.
Timur Iskhodzhanov31377c52014-01-28 03:48:44 +0000[diff] [blame]621 COFFDebugSymbolsSection =
622 Ctx->getCOFFSection(".debug$S",
623 COFF::IMAGE_SCN_MEM_DISCARDABLE |
624 COFF::IMAGE_SCN_CNT_INITIALIZED_DATA |
625 COFF::IMAGE_SCN_MEM_READ,
626 SectionKind::getMetadata());
627
Evan Cheng76792992011-07-20 05:58:47 +0000[diff] [blame]628 DwarfAbbrevSection =
629 Ctx->getCOFFSection(".debug_abbrev",
630 COFF::IMAGE_SCN_MEM_DISCARDABLE |
631 COFF::IMAGE_SCN_MEM_READ,
632 SectionKind::getMetadata());
633 DwarfInfoSection =
634 Ctx->getCOFFSection(".debug_info",
635 COFF::IMAGE_SCN_MEM_DISCARDABLE |
636 COFF::IMAGE_SCN_MEM_READ,
637 SectionKind::getMetadata());
638 DwarfLineSection =
639 Ctx->getCOFFSection(".debug_line",
640 COFF::IMAGE_SCN_MEM_DISCARDABLE |
641 COFF::IMAGE_SCN_MEM_READ,
642 SectionKind::getMetadata());
643 DwarfFrameSection =
644 Ctx->getCOFFSection(".debug_frame",
645 COFF::IMAGE_SCN_MEM_DISCARDABLE |
646 COFF::IMAGE_SCN_MEM_READ,
647 SectionKind::getMetadata());
Krzysztof Parzyszek228daa62013-02-12 18:00:14 +0000[diff] [blame]648 DwarfPubNamesSection =
649 Ctx->getCOFFSection(".debug_pubnames",
650 COFF::IMAGE_SCN_MEM_DISCARDABLE |
651 COFF::IMAGE_SCN_MEM_READ,
652 SectionKind::getMetadata());
Evan Cheng76792992011-07-20 05:58:47 +0000[diff] [blame]653 DwarfPubTypesSection =
654 Ctx->getCOFFSection(".debug_pubtypes",
655 COFF::IMAGE_SCN_MEM_DISCARDABLE |
656 COFF::IMAGE_SCN_MEM_READ,
657 SectionKind::getMetadata());
NAKAMURA Takumi0229e352013-09-10 06:01:56 +0000[diff] [blame]658 DwarfGnuPubNamesSection =
Eric Christopherb0e76942013-09-09 20:03:14 +0000[diff] [blame]659 Ctx->getCOFFSection(".debug_gnu_pubnames",
660 COFF::IMAGE_SCN_MEM_DISCARDABLE |
661 COFF::IMAGE_SCN_MEM_READ,
662 SectionKind::getMetadata());
NAKAMURA Takumi0229e352013-09-10 06:01:56 +0000[diff] [blame]663 DwarfGnuPubTypesSection =
Eric Christopherb0e76942013-09-09 20:03:14 +0000[diff] [blame]664 Ctx->getCOFFSection(".debug_gnu_pubtypes",
665 COFF::IMAGE_SCN_MEM_DISCARDABLE |
666 COFF::IMAGE_SCN_MEM_READ,
667 SectionKind::getMetadata());
Evan Cheng76792992011-07-20 05:58:47 +0000[diff] [blame]668 DwarfStrSection =
669 Ctx->getCOFFSection(".debug_str",
670 COFF::IMAGE_SCN_MEM_DISCARDABLE |
671 COFF::IMAGE_SCN_MEM_READ,
672 SectionKind::getMetadata());
673 DwarfLocSection =
674 Ctx->getCOFFSection(".debug_loc",
675 COFF::IMAGE_SCN_MEM_DISCARDABLE |
676 COFF::IMAGE_SCN_MEM_READ,
677 SectionKind::getMetadata());
678 DwarfARangesSection =
679 Ctx->getCOFFSection(".debug_aranges",
680 COFF::IMAGE_SCN_MEM_DISCARDABLE |
681 COFF::IMAGE_SCN_MEM_READ,
682 SectionKind::getMetadata());
683 DwarfRangesSection =
684 Ctx->getCOFFSection(".debug_ranges",
685 COFF::IMAGE_SCN_MEM_DISCARDABLE |
686 COFF::IMAGE_SCN_MEM_READ,
687 SectionKind::getMetadata());
688 DwarfMacroInfoSection =
689 Ctx->getCOFFSection(".debug_macinfo",
690 COFF::IMAGE_SCN_MEM_DISCARDABLE |
691 COFF::IMAGE_SCN_MEM_READ,
692 SectionKind::getMetadata());
David Blaikie62dd7df2014-03-26 03:05:10 +0000[diff] [blame]693 DwarfInfoDWOSection =
694 Ctx->getCOFFSection(".debug_info.dwo", COFF::IMAGE_SCN_MEM_DISCARDABLE |
695 COFF::IMAGE_SCN_MEM_READ,
696 SectionKind::getMetadata());
697 DwarfAbbrevDWOSection =
698 Ctx->getCOFFSection(".debug_abbrev.dwo", COFF::IMAGE_SCN_MEM_DISCARDABLE |
699 COFF::IMAGE_SCN_MEM_READ,
700 SectionKind::getMetadata());
701 DwarfStrDWOSection =
702 Ctx->getCOFFSection(".debug_str.dwo", COFF::IMAGE_SCN_MEM_DISCARDABLE |
703 COFF::IMAGE_SCN_MEM_READ,
704 SectionKind::getMetadata());
705 DwarfLineDWOSection =
706 Ctx->getCOFFSection(".debug_line.dwo", COFF::IMAGE_SCN_MEM_DISCARDABLE |
707 COFF::IMAGE_SCN_MEM_READ,
708 SectionKind::getMetadata());
709 DwarfLocDWOSection =
710 Ctx->getCOFFSection(".debug_loc.dwo", COFF::IMAGE_SCN_MEM_DISCARDABLE |
711 COFF::IMAGE_SCN_MEM_READ,
712 SectionKind::getMetadata());
713 DwarfStrOffDWOSection =
714 Ctx->getCOFFSection(".debug_str_offsets.dwo", COFF::IMAGE_SCN_MEM_DISCARDABLE |
715 COFF::IMAGE_SCN_MEM_READ,
716 SectionKind::getMetadata());
717 DwarfAddrSection = Ctx->getCOFFSection(
718 ".debug_addr", COFF::IMAGE_SCN_MEM_DISCARDABLE | COFF::IMAGE_SCN_MEM_READ,
719 SectionKind::getMetadata());
Evan Cheng76792992011-07-20 05:58:47 +0000[diff] [blame]720
721 DrectveSection =
722 Ctx->getCOFFSection(".drectve",
723 COFF::IMAGE_SCN_LNK_INFO,
724 SectionKind::getMetadata());
725
726 PDataSection =
727 Ctx->getCOFFSection(".pdata",
728 COFF::IMAGE_SCN_CNT_INITIALIZED_DATA |
Anton Korobeynikovcc8c5392012-08-08 12:46:46 +0000[diff] [blame]729 COFF::IMAGE_SCN_MEM_READ,
Evan Cheng76792992011-07-20 05:58:47 +0000[diff] [blame]730 SectionKind::getDataRel());
731
732 XDataSection =
733 Ctx->getCOFFSection(".xdata",
734 COFF::IMAGE_SCN_CNT_INITIALIZED_DATA |
Anton Korobeynikovcc8c5392012-08-08 12:46:46 +0000[diff] [blame]735 COFF::IMAGE_SCN_MEM_READ,
Evan Cheng76792992011-07-20 05:58:47 +0000[diff] [blame]736 SectionKind::getDataRel());
Anton Korobeynikovc6b40172012-02-11 17:26:53 +0000[diff] [blame]737 TLSDataSection =
738 Ctx->getCOFFSection(".tls$",
739 COFF::IMAGE_SCN_CNT_INITIALIZED_DATA |
740 COFF::IMAGE_SCN_MEM_READ |
741 COFF::IMAGE_SCN_MEM_WRITE,
742 SectionKind::getDataRel());
Evan Cheng76792992011-07-20 05:58:47 +0000[diff] [blame]743}
744
745void MCObjectFileInfo::InitMCObjectFileInfo(StringRef TT, Reloc::Model relocm,
Evan Chengbbf3b0d2011-07-20 19:50:42 +0000[diff] [blame]746 CodeModel::Model cm,
Evan Cheng76792992011-07-20 05:58:47 +0000[diff] [blame]747 MCContext &ctx) {
748 RelocM = relocm;
Evan Chengbbf3b0d2011-07-20 19:50:42 +0000[diff] [blame]749 CMModel = cm;
Evan Cheng76792992011-07-20 05:58:47 +0000[diff] [blame]750 Ctx = &ctx;
751
752 // Common.
753 CommDirectiveSupportsAlignment = true;
754 SupportsWeakOmittedEHFrame = true;
755 IsFunctionEHFrameSymbolPrivate = true;
Tim Northoverd1c6f512014-03-29 09:03:13 +0000[diff] [blame]756 SupportsCompactUnwindWithoutEHFrame = false;
Evan Chengbbf3b0d2011-07-20 19:50:42 +0000[diff] [blame]757
758 PersonalityEncoding = LSDAEncoding = FDEEncoding = FDECFIEncoding =
759 TTypeEncoding = dwarf::DW_EH_PE_absptr;
760
Bill Wendling2d1df6b2013-04-10 21:42:06 +0000[diff] [blame]761 CompactUnwindDwarfEHFrameOnly = 0;
762
Craig Topperbb694de2014-04-13 04:57:38 +0000[diff] [blame^]763 EHFrameSection = nullptr; // Created on demand.
764 CompactUnwindSection = nullptr; // Used only by selected targets.
765 DwarfAccelNamesSection = nullptr; // Used only by selected targets.
766 DwarfAccelObjCSection = nullptr; // Used only by selected targets.
767 DwarfAccelNamespaceSection = nullptr; // Used only by selected targets.
768 DwarfAccelTypesSection = nullptr; // Used only by selected targets.
Evan Cheng76792992011-07-20 05:58:47 +0000[diff] [blame]769
770 Triple T(TT);
771 Triple::ArchType Arch = T.getArch();
772 // FIXME: Checking for Arch here to filter out bogus triples such as
773 // cellspu-apple-darwin. Perhaps we should fix in Triple?
774 if ((Arch == Triple::x86 || Arch == Triple::x86_64 ||
775 Arch == Triple::arm || Arch == Triple::thumb ||
Tim Northover00ed9962014-03-29 10:18:08 +0000[diff] [blame]776 Arch == Triple::arm64 ||
Evan Cheng76792992011-07-20 05:58:47 +0000[diff] [blame]777 Arch == Triple::ppc || Arch == Triple::ppc64 ||
778 Arch == Triple::UnknownArch) &&
Saleem Abdulrasool35476332014-03-06 20:47:11 +0000[diff] [blame]779 (T.isOSDarwin() || T.isOSBinFormatMachO())) {
Evan Cheng76792992011-07-20 05:58:47 +0000[diff] [blame]780 Env = IsMachO;
781 InitMachOMCObjectFileInfo(T);
Saleem Abdulrasool5715e522014-03-06 23:02:15 +0000[diff] [blame]782 } else if ((Arch == Triple::x86 || Arch == Triple::x86_64) &&
783 T.getObjectFormat() != Triple::ELF && T.isOSWindows()) {
Evan Cheng76792992011-07-20 05:58:47 +0000[diff] [blame]784 Env = IsCOFF;
785 InitCOFFMCObjectFileInfo(T);
786 } else {
787 Env = IsELF;
788 InitELFMCObjectFileInfo(T);
789 }
790}
791
David Blaikiebc563272013-12-13 21:33:40 +0000[diff] [blame]792const MCSection *MCObjectFileInfo::getDwarfTypesSection(uint64_t Hash) const {
793 return Ctx->getELFSection(".debug_types", ELF::SHT_PROGBITS, ELF::SHF_GROUP,
794 SectionKind::getMetadata(), 0, utostr(Hash));
795}
796
797const MCSection *
798MCObjectFileInfo::getDwarfTypesDWOSection(uint64_t Hash) const {
David Blaikie15ed5eb2014-01-10 01:38:41 +0000[diff] [blame]799 return Ctx->getELFSection(".debug_types.dwo", ELF::SHT_PROGBITS,
800 ELF::SHF_GROUP, SectionKind::getMetadata(), 0,
801 utostr(Hash));
David Blaikiebc563272013-12-13 21:33:40 +0000[diff] [blame]802}
803
David Chisnall85dd3092012-02-17 16:51:02 +0000[diff] [blame]804void MCObjectFileInfo::InitEHFrameSection() {
805 if (Env == IsMachO)
806 EHFrameSection =
807 Ctx->getMachOSection("__TEXT", "__eh_frame",
David Majnemer7b583052014-03-07 07:36:05 +0000[diff] [blame]808 MachO::S_COALESCED |
809 MachO::S_ATTR_NO_TOC |
810 MachO::S_ATTR_STRIP_STATIC_SYMS |
811 MachO::S_ATTR_LIVE_SUPPORT,
David Chisnall85dd3092012-02-17 16:51:02 +0000[diff] [blame]812 SectionKind::getReadOnly());
813 else if (Env == IsELF)
814 EHFrameSection =
David Chisnallbbec8722012-04-10 11:44:33 +0000[diff] [blame]815 Ctx->getELFSection(".eh_frame", EHSectionType,
David Chisnall07f8d3e2012-02-17 17:31:15 +0000[diff] [blame]816 EHSectionFlags,
David Chisnall85dd3092012-02-17 16:51:02 +0000[diff] [blame]817 SectionKind::getDataRel());
818 else
819 EHFrameSection =
820 Ctx->getCOFFSection(".eh_frame",
821 COFF::IMAGE_SCN_CNT_INITIALIZED_DATA |
822 COFF::IMAGE_SCN_MEM_READ |
823 COFF::IMAGE_SCN_MEM_WRITE,
824 SectionKind::getDataRel());
825}