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gerrit-public.fairphone.software / toolchain / llvm-project / 0436caa9361030b8a2b75f878f3d396273223aeb / . / llvm / lib / MC / MCObjectFileInfo.cpp
blob: 4abdde1aa1787a1c3b4a98893fa52123587e0937 [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 }
Tim Northover3ec1de72014-04-16 11:52:55 +0000[diff] [blame]292 } else if (T.getArch() == Triple::aarch64 ||
293 T.getArch() == Triple::aarch64_be ||
James Molloy7c39df32014-04-30 10:15:35 +0000[diff] [blame]294 T.getArch() == Triple::arm64 ||
295 T.getArch() == Triple::arm64_be) {
Tim Northovere0e3aef2013-01-31 12:12:40 +0000[diff] [blame]296 // The small model guarantees static code/data size < 4GB, but not where it
297 // will be in memory. Most of these could end up >2GB away so even a signed
298 // pc-relative 32-bit address is insufficient, theoretically.
299 if (RelocM == Reloc::PIC_) {
300 PersonalityEncoding = dwarf::DW_EH_PE_indirect | dwarf::DW_EH_PE_pcrel |
301 dwarf::DW_EH_PE_sdata8;
302 LSDAEncoding = dwarf::DW_EH_PE_pcrel | dwarf::DW_EH_PE_sdata8;
303 FDEEncoding = dwarf::DW_EH_PE_pcrel | dwarf::DW_EH_PE_sdata4;
304 TTypeEncoding = dwarf::DW_EH_PE_indirect | dwarf::DW_EH_PE_pcrel |
305 dwarf::DW_EH_PE_sdata8;
306 } else {
307 PersonalityEncoding = dwarf::DW_EH_PE_absptr;
308 LSDAEncoding = dwarf::DW_EH_PE_absptr;
309 FDEEncoding = dwarf::DW_EH_PE_udata4;
310 TTypeEncoding = dwarf::DW_EH_PE_absptr;
311 }
Bill Schmidt0a9170d2013-07-26 01:35:43 +0000[diff] [blame]312 } else if (T.getArch() == Triple::ppc64 || T.getArch() == Triple::ppc64le) {
Adhemerval Zanella1ae22482013-01-09 17:08:15 +0000[diff] [blame]313 PersonalityEncoding = dwarf::DW_EH_PE_indirect | dwarf::DW_EH_PE_pcrel |
314 dwarf::DW_EH_PE_udata8;
Adhemerval Zanella1ae22482013-01-09 17:08:15 +0000[diff] [blame]315 LSDAEncoding = dwarf::DW_EH_PE_pcrel | dwarf::DW_EH_PE_udata8;
316 FDEEncoding = dwarf::DW_EH_PE_pcrel | dwarf::DW_EH_PE_udata8;
317 TTypeEncoding = dwarf::DW_EH_PE_indirect | dwarf::DW_EH_PE_pcrel |
318 dwarf::DW_EH_PE_udata8;
Jakob Stoklund Olesen83c67732014-01-28 02:52:26 +0000[diff] [blame]319 } else if (T.getArch() == Triple::sparc) {
320 if (RelocM == Reloc::PIC_) {
321 LSDAEncoding = dwarf::DW_EH_PE_pcrel | dwarf::DW_EH_PE_sdata4;
322 PersonalityEncoding = dwarf::DW_EH_PE_indirect | dwarf::DW_EH_PE_pcrel |
323 dwarf::DW_EH_PE_sdata4;
324 FDEEncoding = dwarf::DW_EH_PE_pcrel | dwarf::DW_EH_PE_sdata4;
325 TTypeEncoding = dwarf::DW_EH_PE_indirect | dwarf::DW_EH_PE_pcrel |
326 dwarf::DW_EH_PE_sdata4;
327 } else {
328 LSDAEncoding = dwarf::DW_EH_PE_absptr;
329 PersonalityEncoding = dwarf::DW_EH_PE_absptr;
330 FDEEncoding = dwarf::DW_EH_PE_udata4;
331 TTypeEncoding = dwarf::DW_EH_PE_absptr;
332 }
333 } else if (T.getArch() == Triple::sparcv9) {
334 LSDAEncoding = dwarf::DW_EH_PE_pcrel | dwarf::DW_EH_PE_sdata4;
335 if (RelocM == Reloc::PIC_) {
336 PersonalityEncoding = dwarf::DW_EH_PE_indirect | dwarf::DW_EH_PE_pcrel |
337 dwarf::DW_EH_PE_sdata4;
338 FDEEncoding = dwarf::DW_EH_PE_pcrel | dwarf::DW_EH_PE_sdata4;
339 TTypeEncoding = dwarf::DW_EH_PE_indirect | dwarf::DW_EH_PE_pcrel |
340 dwarf::DW_EH_PE_sdata4;
341 } else {
342 PersonalityEncoding = dwarf::DW_EH_PE_absptr;
343 FDEEncoding = dwarf::DW_EH_PE_udata4;
344 TTypeEncoding = dwarf::DW_EH_PE_absptr;
345 }
Ulrich Weigand0213e7f2013-05-06 16:11:12 +0000[diff] [blame]346 } else if (T.getArch() == Triple::systemz) {
347 // All currently-defined code models guarantee that 4-byte PC-relative
348 // values will be in range.
Ulrich Weigande7c6dfe2013-05-06 17:28:30 +0000[diff] [blame]349 if (RelocM == Reloc::PIC_) {
350 PersonalityEncoding = dwarf::DW_EH_PE_indirect | dwarf::DW_EH_PE_pcrel |
351 dwarf::DW_EH_PE_sdata4;
352 LSDAEncoding = dwarf::DW_EH_PE_pcrel | dwarf::DW_EH_PE_sdata4;
353 FDEEncoding = dwarf::DW_EH_PE_pcrel | dwarf::DW_EH_PE_sdata4;
354 TTypeEncoding = dwarf::DW_EH_PE_indirect | dwarf::DW_EH_PE_pcrel |
355 dwarf::DW_EH_PE_sdata4;
356 } else {
357 PersonalityEncoding = dwarf::DW_EH_PE_absptr;
358 LSDAEncoding = dwarf::DW_EH_PE_absptr;
359 FDEEncoding = dwarf::DW_EH_PE_absptr;
360 TTypeEncoding = dwarf::DW_EH_PE_absptr;
361 }
Evan Chengbbf3b0d2011-07-20 19:50:42 +0000[diff] [blame]362 }
363
David Chisnall07f8d3e2012-02-17 17:31:15 +0000[diff] [blame]364 // Solaris requires different flags for .eh_frame to seemingly every other
365 // platform.
David Chisnallbbec8722012-04-10 11:44:33 +0000[diff] [blame]366 EHSectionType = ELF::SHT_PROGBITS;
David Chisnall07f8d3e2012-02-17 17:31:15 +0000[diff] [blame]367 EHSectionFlags = ELF::SHF_ALLOC;
David Chisnallbbec8722012-04-10 11:44:33 +0000[diff] [blame]368 if (T.getOS() == Triple::Solaris) {
369 if (T.getArch() == Triple::x86_64)
370 EHSectionType = ELF::SHT_X86_64_UNWIND;
371 else
372 EHSectionFlags |= ELF::SHF_WRITE;
373 }
David Chisnall07f8d3e2012-02-17 17:31:15 +0000[diff] [blame]374
375
Evan Cheng76792992011-07-20 05:58:47 +0000[diff] [blame]376 // ELF
377 BSSSection =
378 Ctx->getELFSection(".bss", ELF::SHT_NOBITS,
Anton Korobeynikov7722a2d2012-01-25 22:24:19 +0000[diff] [blame]379 ELF::SHF_WRITE | ELF::SHF_ALLOC,
Evan Cheng76792992011-07-20 05:58:47 +0000[diff] [blame]380 SectionKind::getBSS());
381
382 TextSection =
383 Ctx->getELFSection(".text", ELF::SHT_PROGBITS,
384 ELF::SHF_EXECINSTR |
385 ELF::SHF_ALLOC,
386 SectionKind::getText());
387
388 DataSection =
389 Ctx->getELFSection(".data", ELF::SHT_PROGBITS,
390 ELF::SHF_WRITE |ELF::SHF_ALLOC,
391 SectionKind::getDataRel());
392
393 ReadOnlySection =
394 Ctx->getELFSection(".rodata", ELF::SHT_PROGBITS,
395 ELF::SHF_ALLOC,
396 SectionKind::getReadOnly());
397
398 TLSDataSection =
399 Ctx->getELFSection(".tdata", ELF::SHT_PROGBITS,
400 ELF::SHF_ALLOC | ELF::SHF_TLS |
401 ELF::SHF_WRITE,
402 SectionKind::getThreadData());
403
404 TLSBSSSection =
405 Ctx->getELFSection(".tbss", ELF::SHT_NOBITS,
406 ELF::SHF_ALLOC | ELF::SHF_TLS |
407 ELF::SHF_WRITE,
408 SectionKind::getThreadBSS());
409
410 DataRelSection =
411 Ctx->getELFSection(".data.rel", ELF::SHT_PROGBITS,
412 ELF::SHF_ALLOC |ELF::SHF_WRITE,
413 SectionKind::getDataRel());
414
415 DataRelLocalSection =
416 Ctx->getELFSection(".data.rel.local", ELF::SHT_PROGBITS,
417 ELF::SHF_ALLOC |ELF::SHF_WRITE,
418 SectionKind::getDataRelLocal());
419
420 DataRelROSection =
421 Ctx->getELFSection(".data.rel.ro", ELF::SHT_PROGBITS,
422 ELF::SHF_ALLOC |ELF::SHF_WRITE,
423 SectionKind::getReadOnlyWithRel());
424
425 DataRelROLocalSection =
426 Ctx->getELFSection(".data.rel.ro.local", ELF::SHT_PROGBITS,
427 ELF::SHF_ALLOC |ELF::SHF_WRITE,
428 SectionKind::getReadOnlyWithRelLocal());
429
430 MergeableConst4Section =
431 Ctx->getELFSection(".rodata.cst4", ELF::SHT_PROGBITS,
432 ELF::SHF_ALLOC |ELF::SHF_MERGE,
433 SectionKind::getMergeableConst4());
434
435 MergeableConst8Section =
436 Ctx->getELFSection(".rodata.cst8", ELF::SHT_PROGBITS,
437 ELF::SHF_ALLOC |ELF::SHF_MERGE,
438 SectionKind::getMergeableConst8());
439
440 MergeableConst16Section =
441 Ctx->getELFSection(".rodata.cst16", ELF::SHT_PROGBITS,
442 ELF::SHF_ALLOC |ELF::SHF_MERGE,
443 SectionKind::getMergeableConst16());
444
445 StaticCtorSection =
446 Ctx->getELFSection(".ctors", ELF::SHT_PROGBITS,
447 ELF::SHF_ALLOC |ELF::SHF_WRITE,
448 SectionKind::getDataRel());
449
450 StaticDtorSection =
451 Ctx->getELFSection(".dtors", ELF::SHT_PROGBITS,
452 ELF::SHF_ALLOC |ELF::SHF_WRITE,
453 SectionKind::getDataRel());
454
455 // Exception Handling Sections.
456
457 // FIXME: We're emitting LSDA info into a readonly section on ELF, even though
458 // it contains relocatable pointers. In PIC mode, this is probably a big
459 // runtime hit for C++ apps. Either the contents of the LSDA need to be
460 // adjusted or this should be a data section.
461 LSDASection =
462 Ctx->getELFSection(".gcc_except_table", ELF::SHT_PROGBITS,
463 ELF::SHF_ALLOC,
464 SectionKind::getReadOnly());
465
Craig Topperbb694de2014-04-13 04:57:38 +0000[diff] [blame]466 COFFDebugSymbolsSection = nullptr;
Timur Iskhodzhanovf166f6c2014-01-30 01:39:17 +0000[diff] [blame]467
Evan Cheng76792992011-07-20 05:58:47 +0000[diff] [blame]468 // Debug Info Sections.
469 DwarfAbbrevSection =
470 Ctx->getELFSection(".debug_abbrev", ELF::SHT_PROGBITS, 0,
471 SectionKind::getMetadata());
472 DwarfInfoSection =
473 Ctx->getELFSection(".debug_info", ELF::SHT_PROGBITS, 0,
474 SectionKind::getMetadata());
475 DwarfLineSection =
476 Ctx->getELFSection(".debug_line", ELF::SHT_PROGBITS, 0,
477 SectionKind::getMetadata());
478 DwarfFrameSection =
479 Ctx->getELFSection(".debug_frame", ELF::SHT_PROGBITS, 0,
480 SectionKind::getMetadata());
Krzysztof Parzyszek228daa62013-02-12 18:00:14 +0000[diff] [blame]481 DwarfPubNamesSection =
482 Ctx->getELFSection(".debug_pubnames", ELF::SHT_PROGBITS, 0,
483 SectionKind::getMetadata());
Evan Cheng76792992011-07-20 05:58:47 +0000[diff] [blame]484 DwarfPubTypesSection =
485 Ctx->getELFSection(".debug_pubtypes", ELF::SHT_PROGBITS, 0,
486 SectionKind::getMetadata());
Eric Christopherb0e76942013-09-09 20:03:14 +0000[diff] [blame]487 DwarfGnuPubNamesSection =
488 Ctx->getELFSection(".debug_gnu_pubnames", ELF::SHT_PROGBITS, 0,
489 SectionKind::getMetadata());
490 DwarfGnuPubTypesSection =
491 Ctx->getELFSection(".debug_gnu_pubtypes", ELF::SHT_PROGBITS, 0,
492 SectionKind::getMetadata());
Evan Cheng76792992011-07-20 05:58:47 +0000[diff] [blame]493 DwarfStrSection =
Nick Lewycky1a62d782011-10-26 18:44:32 +0000[diff] [blame]494 Ctx->getELFSection(".debug_str", ELF::SHT_PROGBITS,
495 ELF::SHF_MERGE | ELF::SHF_STRINGS,
496 SectionKind::getMergeable1ByteCString());
Evan Cheng76792992011-07-20 05:58:47 +0000[diff] [blame]497 DwarfLocSection =
498 Ctx->getELFSection(".debug_loc", ELF::SHT_PROGBITS, 0,
499 SectionKind::getMetadata());
500 DwarfARangesSection =
501 Ctx->getELFSection(".debug_aranges", ELF::SHT_PROGBITS, 0,
502 SectionKind::getMetadata());
503 DwarfRangesSection =
504 Ctx->getELFSection(".debug_ranges", ELF::SHT_PROGBITS, 0,
505 SectionKind::getMetadata());
506 DwarfMacroInfoSection =
507 Ctx->getELFSection(".debug_macinfo", ELF::SHT_PROGBITS, 0,
508 SectionKind::getMetadata());
Eric Christopher27ed8ec2012-11-28 02:49:34 +0000[diff] [blame]509
510 // DWARF5 Experimental Debug Info
511
512 // Accelerator Tables
Eric Christophera0ad67d2012-10-08 21:41:30 +0000[diff] [blame]513 DwarfAccelNamesSection =
514 Ctx->getELFSection(".apple_names", ELF::SHT_PROGBITS, 0,
515 SectionKind::getMetadata());
516 DwarfAccelObjCSection =
517 Ctx->getELFSection(".apple_objc", ELF::SHT_PROGBITS, 0,
518 SectionKind::getMetadata());
519 DwarfAccelNamespaceSection =
520 Ctx->getELFSection(".apple_namespaces", ELF::SHT_PROGBITS, 0,
521 SectionKind::getMetadata());
522 DwarfAccelTypesSection =
523 Ctx->getELFSection(".apple_types", ELF::SHT_PROGBITS, 0,
524 SectionKind::getMetadata());
Eric Christopherc3b434b2012-11-28 02:49:38 +0000[diff] [blame]525
526 // Fission Sections
527 DwarfInfoDWOSection =
528 Ctx->getELFSection(".debug_info.dwo", ELF::SHT_PROGBITS, 0,
529 SectionKind::getMetadata());
Eric Christopher3c230092012-11-30 06:47:06 +0000[diff] [blame]530 DwarfAbbrevDWOSection =
531 Ctx->getELFSection(".debug_abbrev.dwo", ELF::SHT_PROGBITS, 0,
532 SectionKind::getMetadata());
533 DwarfStrDWOSection =
534 Ctx->getELFSection(".debug_str.dwo", ELF::SHT_PROGBITS,
535 ELF::SHF_MERGE | ELF::SHF_STRINGS,
536 SectionKind::getMergeable1ByteCString());
537 DwarfLineDWOSection =
538 Ctx->getELFSection(".debug_line.dwo", ELF::SHT_PROGBITS, 0,
539 SectionKind::getMetadata());
540 DwarfLocDWOSection =
541 Ctx->getELFSection(".debug_loc.dwo", ELF::SHT_PROGBITS, 0,
542 SectionKind::getMetadata());
Eric Christopherc0fa8672013-01-04 17:59:22 +0000[diff] [blame]543 DwarfStrOffDWOSection =
544 Ctx->getELFSection(".debug_str_offsets.dwo", ELF::SHT_PROGBITS, 0,
545 SectionKind::getMetadata());
Eric Christopher962c9082013-01-15 23:56:56 +0000[diff] [blame]546 DwarfAddrSection =
547 Ctx->getELFSection(".debug_addr", ELF::SHT_PROGBITS, 0,
548 SectionKind::getMetadata());
Evan Cheng76792992011-07-20 05:58:47 +0000[diff] [blame]549}
550
551
552void MCObjectFileInfo::InitCOFFMCObjectFileInfo(Triple T) {
David Majnemera9bdb322014-04-08 22:33:40 +0000[diff] [blame]553 // The object file format cannot represent common symbols with explicit
554 // alignments.
555 CommDirectiveSupportsAlignment = false;
556
Evan Cheng76792992011-07-20 05:58:47 +0000[diff] [blame]557 // COFF
David Majnemer3d96acb2013-08-13 01:23:53 +0000[diff] [blame]558 BSSSection =
559 Ctx->getCOFFSection(".bss",
560 COFF::IMAGE_SCN_CNT_UNINITIALIZED_DATA |
561 COFF::IMAGE_SCN_MEM_READ |
562 COFF::IMAGE_SCN_MEM_WRITE,
563 SectionKind::getBSS());
Evan Cheng76792992011-07-20 05:58:47 +0000[diff] [blame]564 TextSection =
565 Ctx->getCOFFSection(".text",
566 COFF::IMAGE_SCN_CNT_CODE |
567 COFF::IMAGE_SCN_MEM_EXECUTE |
568 COFF::IMAGE_SCN_MEM_READ,
569 SectionKind::getText());
570 DataSection =
571 Ctx->getCOFFSection(".data",
572 COFF::IMAGE_SCN_CNT_INITIALIZED_DATA |
573 COFF::IMAGE_SCN_MEM_READ |
574 COFF::IMAGE_SCN_MEM_WRITE,
575 SectionKind::getDataRel());
576 ReadOnlySection =
577 Ctx->getCOFFSection(".rdata",
578 COFF::IMAGE_SCN_CNT_INITIALIZED_DATA |
579 COFF::IMAGE_SCN_MEM_READ,
580 SectionKind::getReadOnly());
Saleem Abdulrasooledbdd2e2014-03-27 22:50:05 +0000[diff] [blame]581 if (T.isKnownWindowsMSVCEnvironment()) {
Michael J. Spencerb560d072012-02-23 21:56:08 +0000[diff] [blame]582 StaticCtorSection =
583 Ctx->getCOFFSection(".CRT$XCU",
584 COFF::IMAGE_SCN_CNT_INITIALIZED_DATA |
585 COFF::IMAGE_SCN_MEM_READ,
586 SectionKind::getReadOnly());
587 } else {
588 StaticCtorSection =
589 Ctx->getCOFFSection(".ctors",
590 COFF::IMAGE_SCN_CNT_INITIALIZED_DATA |
591 COFF::IMAGE_SCN_MEM_READ |
592 COFF::IMAGE_SCN_MEM_WRITE,
593 SectionKind::getDataRel());
594 }
595
596
Saleem Abdulrasooledbdd2e2014-03-27 22:50:05 +0000[diff] [blame]597 if (T.isKnownWindowsMSVCEnvironment()) {
Anton Korobeynikov37d73002012-09-23 15:53:47 +0000[diff] [blame]598 StaticDtorSection =
599 Ctx->getCOFFSection(".CRT$XTX",
600 COFF::IMAGE_SCN_CNT_INITIALIZED_DATA |
601 COFF::IMAGE_SCN_MEM_READ,
602 SectionKind::getReadOnly());
603 } else {
604 StaticDtorSection =
605 Ctx->getCOFFSection(".dtors",
606 COFF::IMAGE_SCN_CNT_INITIALIZED_DATA |
607 COFF::IMAGE_SCN_MEM_READ |
608 COFF::IMAGE_SCN_MEM_WRITE,
609 SectionKind::getDataRel());
610 }
Evan Cheng76792992011-07-20 05:58:47 +0000[diff] [blame]611
612 // FIXME: We're emitting LSDA info into a readonly section on COFF, even
613 // though it contains relocatable pointers. In PIC mode, this is probably a
614 // big runtime hit for C++ apps. Either the contents of the LSDA need to be
615 // adjusted or this should be a data section.
Kai Nacke42097302013-07-08 04:43:23 +0000[diff] [blame]616 LSDASection =
617 Ctx->getCOFFSection(".gcc_except_table",
618 COFF::IMAGE_SCN_CNT_INITIALIZED_DATA |
619 COFF::IMAGE_SCN_MEM_READ,
620 SectionKind::getReadOnly());
Evan Cheng76792992011-07-20 05:58:47 +0000[diff] [blame]621
622 // Debug info.
Timur Iskhodzhanov31377c52014-01-28 03:48:44 +0000[diff] [blame]623 COFFDebugSymbolsSection =
624 Ctx->getCOFFSection(".debug$S",
625 COFF::IMAGE_SCN_MEM_DISCARDABLE |
626 COFF::IMAGE_SCN_CNT_INITIALIZED_DATA |
627 COFF::IMAGE_SCN_MEM_READ,
628 SectionKind::getMetadata());
629
Evan Cheng76792992011-07-20 05:58:47 +0000[diff] [blame]630 DwarfAbbrevSection =
631 Ctx->getCOFFSection(".debug_abbrev",
632 COFF::IMAGE_SCN_MEM_DISCARDABLE |
633 COFF::IMAGE_SCN_MEM_READ,
634 SectionKind::getMetadata());
635 DwarfInfoSection =
636 Ctx->getCOFFSection(".debug_info",
637 COFF::IMAGE_SCN_MEM_DISCARDABLE |
638 COFF::IMAGE_SCN_MEM_READ,
639 SectionKind::getMetadata());
640 DwarfLineSection =
641 Ctx->getCOFFSection(".debug_line",
642 COFF::IMAGE_SCN_MEM_DISCARDABLE |
643 COFF::IMAGE_SCN_MEM_READ,
644 SectionKind::getMetadata());
645 DwarfFrameSection =
646 Ctx->getCOFFSection(".debug_frame",
647 COFF::IMAGE_SCN_MEM_DISCARDABLE |
648 COFF::IMAGE_SCN_MEM_READ,
649 SectionKind::getMetadata());
Krzysztof Parzyszek228daa62013-02-12 18:00:14 +0000[diff] [blame]650 DwarfPubNamesSection =
651 Ctx->getCOFFSection(".debug_pubnames",
652 COFF::IMAGE_SCN_MEM_DISCARDABLE |
653 COFF::IMAGE_SCN_MEM_READ,
654 SectionKind::getMetadata());
Evan Cheng76792992011-07-20 05:58:47 +0000[diff] [blame]655 DwarfPubTypesSection =
656 Ctx->getCOFFSection(".debug_pubtypes",
657 COFF::IMAGE_SCN_MEM_DISCARDABLE |
658 COFF::IMAGE_SCN_MEM_READ,
659 SectionKind::getMetadata());
NAKAMURA Takumi0229e352013-09-10 06:01:56 +0000[diff] [blame]660 DwarfGnuPubNamesSection =
Eric Christopherb0e76942013-09-09 20:03:14 +0000[diff] [blame]661 Ctx->getCOFFSection(".debug_gnu_pubnames",
662 COFF::IMAGE_SCN_MEM_DISCARDABLE |
663 COFF::IMAGE_SCN_MEM_READ,
664 SectionKind::getMetadata());
NAKAMURA Takumi0229e352013-09-10 06:01:56 +0000[diff] [blame]665 DwarfGnuPubTypesSection =
Eric Christopherb0e76942013-09-09 20:03:14 +0000[diff] [blame]666 Ctx->getCOFFSection(".debug_gnu_pubtypes",
667 COFF::IMAGE_SCN_MEM_DISCARDABLE |
668 COFF::IMAGE_SCN_MEM_READ,
669 SectionKind::getMetadata());
Evan Cheng76792992011-07-20 05:58:47 +0000[diff] [blame]670 DwarfStrSection =
671 Ctx->getCOFFSection(".debug_str",
672 COFF::IMAGE_SCN_MEM_DISCARDABLE |
673 COFF::IMAGE_SCN_MEM_READ,
674 SectionKind::getMetadata());
675 DwarfLocSection =
676 Ctx->getCOFFSection(".debug_loc",
677 COFF::IMAGE_SCN_MEM_DISCARDABLE |
678 COFF::IMAGE_SCN_MEM_READ,
679 SectionKind::getMetadata());
680 DwarfARangesSection =
681 Ctx->getCOFFSection(".debug_aranges",
682 COFF::IMAGE_SCN_MEM_DISCARDABLE |
683 COFF::IMAGE_SCN_MEM_READ,
684 SectionKind::getMetadata());
685 DwarfRangesSection =
686 Ctx->getCOFFSection(".debug_ranges",
687 COFF::IMAGE_SCN_MEM_DISCARDABLE |
688 COFF::IMAGE_SCN_MEM_READ,
689 SectionKind::getMetadata());
690 DwarfMacroInfoSection =
691 Ctx->getCOFFSection(".debug_macinfo",
692 COFF::IMAGE_SCN_MEM_DISCARDABLE |
693 COFF::IMAGE_SCN_MEM_READ,
694 SectionKind::getMetadata());
David Blaikie62dd7df2014-03-26 03:05:10 +0000[diff] [blame]695 DwarfInfoDWOSection =
696 Ctx->getCOFFSection(".debug_info.dwo", COFF::IMAGE_SCN_MEM_DISCARDABLE |
697 COFF::IMAGE_SCN_MEM_READ,
698 SectionKind::getMetadata());
699 DwarfAbbrevDWOSection =
700 Ctx->getCOFFSection(".debug_abbrev.dwo", COFF::IMAGE_SCN_MEM_DISCARDABLE |
701 COFF::IMAGE_SCN_MEM_READ,
702 SectionKind::getMetadata());
703 DwarfStrDWOSection =
704 Ctx->getCOFFSection(".debug_str.dwo", COFF::IMAGE_SCN_MEM_DISCARDABLE |
705 COFF::IMAGE_SCN_MEM_READ,
706 SectionKind::getMetadata());
707 DwarfLineDWOSection =
708 Ctx->getCOFFSection(".debug_line.dwo", COFF::IMAGE_SCN_MEM_DISCARDABLE |
709 COFF::IMAGE_SCN_MEM_READ,
710 SectionKind::getMetadata());
711 DwarfLocDWOSection =
712 Ctx->getCOFFSection(".debug_loc.dwo", COFF::IMAGE_SCN_MEM_DISCARDABLE |
713 COFF::IMAGE_SCN_MEM_READ,
714 SectionKind::getMetadata());
715 DwarfStrOffDWOSection =
716 Ctx->getCOFFSection(".debug_str_offsets.dwo", COFF::IMAGE_SCN_MEM_DISCARDABLE |
717 COFF::IMAGE_SCN_MEM_READ,
718 SectionKind::getMetadata());
719 DwarfAddrSection = Ctx->getCOFFSection(
720 ".debug_addr", COFF::IMAGE_SCN_MEM_DISCARDABLE | COFF::IMAGE_SCN_MEM_READ,
721 SectionKind::getMetadata());
Evan Cheng76792992011-07-20 05:58:47 +0000[diff] [blame]722
723 DrectveSection =
724 Ctx->getCOFFSection(".drectve",
725 COFF::IMAGE_SCN_LNK_INFO,
726 SectionKind::getMetadata());
727
728 PDataSection =
729 Ctx->getCOFFSection(".pdata",
730 COFF::IMAGE_SCN_CNT_INITIALIZED_DATA |
Anton Korobeynikovcc8c5392012-08-08 12:46:46 +0000[diff] [blame]731 COFF::IMAGE_SCN_MEM_READ,
Evan Cheng76792992011-07-20 05:58:47 +0000[diff] [blame]732 SectionKind::getDataRel());
733
734 XDataSection =
735 Ctx->getCOFFSection(".xdata",
736 COFF::IMAGE_SCN_CNT_INITIALIZED_DATA |
Anton Korobeynikovcc8c5392012-08-08 12:46:46 +0000[diff] [blame]737 COFF::IMAGE_SCN_MEM_READ,
Evan Cheng76792992011-07-20 05:58:47 +0000[diff] [blame]738 SectionKind::getDataRel());
Anton Korobeynikovc6b40172012-02-11 17:26:53 +0000[diff] [blame]739 TLSDataSection =
740 Ctx->getCOFFSection(".tls$",
741 COFF::IMAGE_SCN_CNT_INITIALIZED_DATA |
742 COFF::IMAGE_SCN_MEM_READ |
743 COFF::IMAGE_SCN_MEM_WRITE,
744 SectionKind::getDataRel());
Evan Cheng76792992011-07-20 05:58:47 +0000[diff] [blame]745}
746
747void MCObjectFileInfo::InitMCObjectFileInfo(StringRef TT, Reloc::Model relocm,
Evan Chengbbf3b0d2011-07-20 19:50:42 +0000[diff] [blame]748 CodeModel::Model cm,
Evan Cheng76792992011-07-20 05:58:47 +0000[diff] [blame]749 MCContext &ctx) {
750 RelocM = relocm;
Evan Chengbbf3b0d2011-07-20 19:50:42 +0000[diff] [blame]751 CMModel = cm;
Evan Cheng76792992011-07-20 05:58:47 +0000[diff] [blame]752 Ctx = &ctx;
753
754 // Common.
755 CommDirectiveSupportsAlignment = true;
756 SupportsWeakOmittedEHFrame = true;
757 IsFunctionEHFrameSymbolPrivate = true;
Tim Northoverd1c6f512014-03-29 09:03:13 +0000[diff] [blame]758 SupportsCompactUnwindWithoutEHFrame = false;
Evan Chengbbf3b0d2011-07-20 19:50:42 +0000[diff] [blame]759
760 PersonalityEncoding = LSDAEncoding = FDEEncoding = FDECFIEncoding =
761 TTypeEncoding = dwarf::DW_EH_PE_absptr;
762
Bill Wendling2d1df6b2013-04-10 21:42:06 +0000[diff] [blame]763 CompactUnwindDwarfEHFrameOnly = 0;
764
Craig Topperbb694de2014-04-13 04:57:38 +0000[diff] [blame]765 EHFrameSection = nullptr; // Created on demand.
766 CompactUnwindSection = nullptr; // Used only by selected targets.
767 DwarfAccelNamesSection = nullptr; // Used only by selected targets.
768 DwarfAccelObjCSection = nullptr; // Used only by selected targets.
769 DwarfAccelNamespaceSection = nullptr; // Used only by selected targets.
770 DwarfAccelTypesSection = nullptr; // Used only by selected targets.
Evan Cheng76792992011-07-20 05:58:47 +0000[diff] [blame]771
772 Triple T(TT);
773 Triple::ArchType Arch = T.getArch();
774 // FIXME: Checking for Arch here to filter out bogus triples such as
775 // cellspu-apple-darwin. Perhaps we should fix in Triple?
776 if ((Arch == Triple::x86 || Arch == Triple::x86_64 ||
777 Arch == Triple::arm || Arch == Triple::thumb ||
Tim Northover00ed9962014-03-29 10:18:08 +0000[diff] [blame]778 Arch == Triple::arm64 ||
Evan Cheng76792992011-07-20 05:58:47 +0000[diff] [blame]779 Arch == Triple::ppc || Arch == Triple::ppc64 ||
780 Arch == Triple::UnknownArch) &&
Saleem Abdulrasool35476332014-03-06 20:47:11 +0000[diff] [blame]781 (T.isOSDarwin() || T.isOSBinFormatMachO())) {
Evan Cheng76792992011-07-20 05:58:47 +0000[diff] [blame]782 Env = IsMachO;
783 InitMachOMCObjectFileInfo(T);
Saleem Abdulrasoolffdb92a702014-04-27 04:54:16 +0000[diff] [blame]784 } else if ((Arch == Triple::x86 || Arch == Triple::x86_64 ||
785 Arch == Triple::arm || Arch == Triple::thumb) &&
786 (T.isOSWindows() && T.getObjectFormat() == Triple::COFF)) {
Evan Cheng76792992011-07-20 05:58:47 +0000[diff] [blame]787 Env = IsCOFF;
788 InitCOFFMCObjectFileInfo(T);
789 } else {
790 Env = IsELF;
791 InitELFMCObjectFileInfo(T);
792 }
793}
794
David Blaikiebc563272013-12-13 21:33:40 +0000[diff] [blame]795const MCSection *MCObjectFileInfo::getDwarfTypesSection(uint64_t Hash) const {
796 return Ctx->getELFSection(".debug_types", ELF::SHT_PROGBITS, ELF::SHF_GROUP,
797 SectionKind::getMetadata(), 0, utostr(Hash));
798}
799
800const MCSection *
801MCObjectFileInfo::getDwarfTypesDWOSection(uint64_t Hash) const {
David Blaikie15ed5eb2014-01-10 01:38:41 +0000[diff] [blame]802 return Ctx->getELFSection(".debug_types.dwo", ELF::SHT_PROGBITS,
803 ELF::SHF_GROUP, SectionKind::getMetadata(), 0,
804 utostr(Hash));
David Blaikiebc563272013-12-13 21:33:40 +0000[diff] [blame]805}
806
David Chisnall85dd3092012-02-17 16:51:02 +0000[diff] [blame]807void MCObjectFileInfo::InitEHFrameSection() {
808 if (Env == IsMachO)
809 EHFrameSection =
810 Ctx->getMachOSection("__TEXT", "__eh_frame",
David Majnemer7b583052014-03-07 07:36:05 +0000[diff] [blame]811 MachO::S_COALESCED |
812 MachO::S_ATTR_NO_TOC |
813 MachO::S_ATTR_STRIP_STATIC_SYMS |
814 MachO::S_ATTR_LIVE_SUPPORT,
David Chisnall85dd3092012-02-17 16:51:02 +0000[diff] [blame]815 SectionKind::getReadOnly());
816 else if (Env == IsELF)
817 EHFrameSection =
David Chisnallbbec8722012-04-10 11:44:33 +0000[diff] [blame]818 Ctx->getELFSection(".eh_frame", EHSectionType,
David Chisnall07f8d3e2012-02-17 17:31:15 +0000[diff] [blame]819 EHSectionFlags,
David Chisnall85dd3092012-02-17 16:51:02 +0000[diff] [blame]820 SectionKind::getDataRel());
821 else
822 EHFrameSection =
823 Ctx->getCOFFSection(".eh_frame",
824 COFF::IMAGE_SCN_CNT_INITIALIZED_DATA |
825 COFF::IMAGE_SCN_MEM_READ |
826 COFF::IMAGE_SCN_MEM_WRITE,
827 SectionKind::getDataRel());
828}