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gerrit-public.fairphone.software / toolchain / llvm-project / a279410ede86a5b7d7c6b383fea647d00e447649 / . / llvm / lib / MC / MCObjectFileInfo.cpp
blob: 7886ab62ca5557286e7640a817b0bf5bc2c2b2c7 [file] [log] [blame]
Evan Cheng76792992011-07-20 05:58:47 +0000[diff] [blame]1//===-- MObjectFileInfo.cpp - Object File Information ---------------------===//
2//
3// The LLVM Compiler Infrastructure
4//
5// This file is distributed under the University of Illinois Open Source
6// License. See LICENSE.TXT for details.
7//
8//===----------------------------------------------------------------------===//
9
10#include "llvm/MC/MCObjectFileInfo.h"
David Blaikiebc563272013-12-13 21:33:40 +0000[diff] [blame]11#include "llvm/ADT/StringExtras.h"
Chandler Carruth8a8cd2b2014-01-07 11:48:04 +0000[diff] [blame]12#include "llvm/ADT/Triple.h"
Joerg Sonnenberger94cbb662014-05-13 17:58:13 +0000[diff] [blame]13#include "llvm/MC/MCAsmInfo.h"
Evan Cheng76792992011-07-20 05:58:47 +0000[diff] [blame]14#include "llvm/MC/MCContext.h"
15#include "llvm/MC/MCSection.h"
16#include "llvm/MC/MCSectionCOFF.h"
17#include "llvm/MC/MCSectionELF.h"
18#include "llvm/MC/MCSectionMachO.h"
Evan Cheng76792992011-07-20 05:58:47 +0000[diff] [blame]19using namespace llvm;
20
Rafael Espindolabecdf632014-06-20 22:37:01 +0000[diff] [blame]21static bool useCompactUnwind(const Triple &T) {
22 // Only on darwin.
23 if (!T.isOSDarwin())
24 return false;
25
26 // aarch64 always has it.
Tim Northovere19bed72014-07-23 12:32:47 +0000[diff] [blame]27 if (T.getArch() == Triple::aarch64)
Rafael Espindolabecdf632014-06-20 22:37:01 +0000[diff] [blame]28 return true;
29
30 // Use it on newer version of OS X.
31 if (T.isMacOSX() && !T.isMacOSXVersionLT(10, 6))
32 return true;
33
Rafael Espindolac3510c72014-06-20 22:40:55 +0000[diff] [blame]34 // And the iOS simulator.
35 if (T.isiOS() &&
36 (T.getArch() == Triple::x86_64 || T.getArch() == Triple::x86))
37 return true;
38
Rafael Espindolabecdf632014-06-20 22:37:01 +0000[diff] [blame]39 return false;
40}
41
Evan Cheng76792992011-07-20 05:58:47 +0000[diff] [blame]42void MCObjectFileInfo::InitMachOMCObjectFileInfo(Triple T) {
43 // MachO
Evan Cheng76792992011-07-20 05:58:47 +0000[diff] [blame]44 SupportsWeakOmittedEHFrame = false;
45
Tim Northovere19bed72014-07-23 12:32:47 +0000[diff] [blame]46 if (T.isOSDarwin() && T.getArch() == Triple::aarch64)
Tim Northover00ed9962014-03-29 10:18:08 +0000[diff] [blame]47 SupportsCompactUnwindWithoutEHFrame = true;
48
Evan Chengbbf3b0d2011-07-20 19:50:42 +0000[diff] [blame]49 PersonalityEncoding = dwarf::DW_EH_PE_indirect | dwarf::DW_EH_PE_pcrel
50 | dwarf::DW_EH_PE_sdata4;
Rafael Espindolaaa7851d2014-05-12 13:47:05 +0000[diff] [blame]51 LSDAEncoding = FDECFIEncoding = dwarf::DW_EH_PE_pcrel;
Evan Chengbbf3b0d2011-07-20 19:50:42 +0000[diff] [blame]52 TTypeEncoding = dwarf::DW_EH_PE_indirect | dwarf::DW_EH_PE_pcrel |
53 dwarf::DW_EH_PE_sdata4;
54
Evan Cheng76792992011-07-20 05:58:47 +0000[diff] [blame]55 // .comm doesn't support alignment before Leopard.
56 if (T.isMacOSX() && T.isMacOSXVersionLT(10, 5))
57 CommDirectiveSupportsAlignment = false;
58
59 TextSection // .text
60 = Ctx->getMachOSection("__TEXT", "__text",
David Majnemer7b583052014-03-07 07:36:05 +0000[diff] [blame]61 MachO::S_ATTR_PURE_INSTRUCTIONS,
Evan Cheng76792992011-07-20 05:58:47 +0000[diff] [blame]62 SectionKind::getText());
63 DataSection // .data
64 = Ctx->getMachOSection("__DATA", "__data", 0,
65 SectionKind::getDataRel());
66
NAKAMURA Takumi68fa6f92013-09-21 02:34:45 +0000[diff] [blame]67 // BSSSection might not be expected initialized on msvc.
Craig Topperbb694de2014-04-13 04:57:38 +0000[diff] [blame]68 BSSSection = nullptr;
NAKAMURA Takumi68fa6f92013-09-21 02:34:45 +0000[diff] [blame]69
Evan Cheng76792992011-07-20 05:58:47 +0000[diff] [blame]70 TLSDataSection // .tdata
71 = Ctx->getMachOSection("__DATA", "__thread_data",
David Majnemer7b583052014-03-07 07:36:05 +0000[diff] [blame]72 MachO::S_THREAD_LOCAL_REGULAR,
Evan Cheng76792992011-07-20 05:58:47 +0000[diff] [blame]73 SectionKind::getDataRel());
74 TLSBSSSection // .tbss
75 = Ctx->getMachOSection("__DATA", "__thread_bss",
David Majnemer7b583052014-03-07 07:36:05 +0000[diff] [blame]76 MachO::S_THREAD_LOCAL_ZEROFILL,
Evan Cheng76792992011-07-20 05:58:47 +0000[diff] [blame]77 SectionKind::getThreadBSS());
78
79 // TODO: Verify datarel below.
80 TLSTLVSection // .tlv
81 = Ctx->getMachOSection("__DATA", "__thread_vars",
David Majnemer7b583052014-03-07 07:36:05 +0000[diff] [blame]82 MachO::S_THREAD_LOCAL_VARIABLES,
Evan Cheng76792992011-07-20 05:58:47 +0000[diff] [blame]83 SectionKind::getDataRel());
84
85 TLSThreadInitSection
86 = Ctx->getMachOSection("__DATA", "__thread_init",
David Majnemer7b583052014-03-07 07:36:05 +0000[diff] [blame]87 MachO::S_THREAD_LOCAL_INIT_FUNCTION_POINTERS,
Jim Grosbach0dde3492011-11-15 16:46:22 +0000[diff] [blame]88 SectionKind::getDataRel());
Evan Cheng76792992011-07-20 05:58:47 +0000[diff] [blame]89
90 CStringSection // .cstring
91 = Ctx->getMachOSection("__TEXT", "__cstring",
David Majnemer7b583052014-03-07 07:36:05 +0000[diff] [blame]92 MachO::S_CSTRING_LITERALS,
Evan Cheng76792992011-07-20 05:58:47 +0000[diff] [blame]93 SectionKind::getMergeable1ByteCString());
94 UStringSection
95 = Ctx->getMachOSection("__TEXT","__ustring", 0,
96 SectionKind::getMergeable2ByteCString());
97 FourByteConstantSection // .literal4
98 = Ctx->getMachOSection("__TEXT", "__literal4",
David Majnemer7b583052014-03-07 07:36:05 +0000[diff] [blame]99 MachO::S_4BYTE_LITERALS,
Evan Cheng76792992011-07-20 05:58:47 +0000[diff] [blame]100 SectionKind::getMergeableConst4());
101 EightByteConstantSection // .literal8
102 = Ctx->getMachOSection("__TEXT", "__literal8",
David Majnemer7b583052014-03-07 07:36:05 +0000[diff] [blame]103 MachO::S_8BYTE_LITERALS,
Evan Cheng76792992011-07-20 05:58:47 +0000[diff] [blame]104 SectionKind::getMergeableConst8());
105
Rafael Espindola1f3de492014-02-13 23:16:11 +0000[diff] [blame]106 SixteenByteConstantSection // .literal16
107 = Ctx->getMachOSection("__TEXT", "__literal16",
David Majnemer7b583052014-03-07 07:36:05 +0000[diff] [blame]108 MachO::S_16BYTE_LITERALS,
Rafael Espindola1f3de492014-02-13 23:16:11 +0000[diff] [blame]109 SectionKind::getMergeableConst16());
Evan Cheng76792992011-07-20 05:58:47 +0000[diff] [blame]110
111 ReadOnlySection // .const
112 = Ctx->getMachOSection("__TEXT", "__const", 0,
113 SectionKind::getReadOnly());
114
115 TextCoalSection
116 = Ctx->getMachOSection("__TEXT", "__textcoal_nt",
David Majnemer7b583052014-03-07 07:36:05 +0000[diff] [blame]117 MachO::S_COALESCED |
118 MachO::S_ATTR_PURE_INSTRUCTIONS,
Evan Cheng76792992011-07-20 05:58:47 +0000[diff] [blame]119 SectionKind::getText());
120 ConstTextCoalSection
121 = Ctx->getMachOSection("__TEXT", "__const_coal",
David Majnemer7b583052014-03-07 07:36:05 +0000[diff] [blame]122 MachO::S_COALESCED,
Evan Cheng76792992011-07-20 05:58:47 +0000[diff] [blame]123 SectionKind::getReadOnly());
124 ConstDataSection // .const_data
125 = Ctx->getMachOSection("__DATA", "__const", 0,
126 SectionKind::getReadOnlyWithRel());
127 DataCoalSection
128 = Ctx->getMachOSection("__DATA","__datacoal_nt",
David Majnemer7b583052014-03-07 07:36:05 +0000[diff] [blame]129 MachO::S_COALESCED,
Evan Cheng76792992011-07-20 05:58:47 +0000[diff] [blame]130 SectionKind::getDataRel());
131 DataCommonSection
132 = Ctx->getMachOSection("__DATA","__common",
David Majnemer7b583052014-03-07 07:36:05 +0000[diff] [blame]133 MachO::S_ZEROFILL,
Evan Cheng76792992011-07-20 05:58:47 +0000[diff] [blame]134 SectionKind::getBSS());
135 DataBSSSection
David Majnemer7b583052014-03-07 07:36:05 +0000[diff] [blame]136 = Ctx->getMachOSection("__DATA","__bss", MachO::S_ZEROFILL,
Evan Cheng76792992011-07-20 05:58:47 +0000[diff] [blame]137 SectionKind::getBSS());
138
139
140 LazySymbolPointerSection
141 = Ctx->getMachOSection("__DATA", "__la_symbol_ptr",
David Majnemer7b583052014-03-07 07:36:05 +0000[diff] [blame]142 MachO::S_LAZY_SYMBOL_POINTERS,
Evan Cheng76792992011-07-20 05:58:47 +0000[diff] [blame]143 SectionKind::getMetadata());
144 NonLazySymbolPointerSection
145 = Ctx->getMachOSection("__DATA", "__nl_symbol_ptr",
David Majnemer7b583052014-03-07 07:36:05 +0000[diff] [blame]146 MachO::S_NON_LAZY_SYMBOL_POINTERS,
Evan Cheng76792992011-07-20 05:58:47 +0000[diff] [blame]147 SectionKind::getMetadata());
148
149 if (RelocM == Reloc::Static) {
150 StaticCtorSection
151 = Ctx->getMachOSection("__TEXT", "__constructor", 0,
152 SectionKind::getDataRel());
153 StaticDtorSection
154 = Ctx->getMachOSection("__TEXT", "__destructor", 0,
155 SectionKind::getDataRel());
156 } else {
157 StaticCtorSection
158 = Ctx->getMachOSection("__DATA", "__mod_init_func",
David Majnemer7b583052014-03-07 07:36:05 +0000[diff] [blame]159 MachO::S_MOD_INIT_FUNC_POINTERS,
Evan Cheng76792992011-07-20 05:58:47 +0000[diff] [blame]160 SectionKind::getDataRel());
161 StaticDtorSection
162 = Ctx->getMachOSection("__DATA", "__mod_term_func",
David Majnemer7b583052014-03-07 07:36:05 +0000[diff] [blame]163 MachO::S_MOD_TERM_FUNC_POINTERS,
Evan Cheng76792992011-07-20 05:58:47 +0000[diff] [blame]164 SectionKind::getDataRel());
165 }
166
167 // Exception Handling.
168 LSDASection = Ctx->getMachOSection("__TEXT", "__gcc_except_tab", 0,
169 SectionKind::getReadOnlyWithRel());
170
Craig Topperbb694de2014-04-13 04:57:38 +0000[diff] [blame]171 COFFDebugSymbolsSection = nullptr;
Timur Iskhodzhanovf166f6c2014-01-30 01:39:17 +0000[diff] [blame]172
Rafael Espindolabecdf632014-06-20 22:37:01 +0000[diff] [blame]173 if (useCompactUnwind(T)) {
Evan Cheng76792992011-07-20 05:58:47 +0000[diff] [blame]174 CompactUnwindSection =
Rafael Espindolabecdf632014-06-20 22:37:01 +0000[diff] [blame]175 Ctx->getMachOSection("__LD", "__compact_unwind", MachO::S_ATTR_DEBUG,
176 SectionKind::getReadOnly());
Evan Cheng76792992011-07-20 05:58:47 +0000[diff] [blame]177
Bill Wendling2d1df6b2013-04-10 21:42:06 +0000[diff] [blame]178 if (T.getArch() == Triple::x86_64 || T.getArch() == Triple::x86)
179 CompactUnwindDwarfEHFrameOnly = 0x04000000;
Tim Northovere19bed72014-07-23 12:32:47 +0000[diff] [blame]180 else if (T.getArch() == Triple::aarch64)
Tim Northover00ed9962014-03-29 10:18:08 +0000[diff] [blame]181 CompactUnwindDwarfEHFrameOnly = 0x03000000;
Bill Wendling2d1df6b2013-04-10 21:42:06 +0000[diff] [blame]182 }
183
Evan Cheng76792992011-07-20 05:58:47 +0000[diff] [blame]184 // Debug Information.
Eric Christopher4996c702011-11-07 09:24:32 +0000[diff] [blame]185 DwarfAccelNamesSection =
186 Ctx->getMachOSection("__DWARF", "__apple_names",
David Majnemer7b583052014-03-07 07:36:05 +0000[diff] [blame]187 MachO::S_ATTR_DEBUG,
Eric Christopher4996c702011-11-07 09:24:32 +0000[diff] [blame]188 SectionKind::getMetadata());
189 DwarfAccelObjCSection =
190 Ctx->getMachOSection("__DWARF", "__apple_objc",
David Majnemer7b583052014-03-07 07:36:05 +0000[diff] [blame]191 MachO::S_ATTR_DEBUG,
Eric Christopher4996c702011-11-07 09:24:32 +0000[diff] [blame]192 SectionKind::getMetadata());
193 // 16 character section limit...
194 DwarfAccelNamespaceSection =
195 Ctx->getMachOSection("__DWARF", "__apple_namespac",
David Majnemer7b583052014-03-07 07:36:05 +0000[diff] [blame]196 MachO::S_ATTR_DEBUG,
Eric Christopher4996c702011-11-07 09:24:32 +0000[diff] [blame]197 SectionKind::getMetadata());
198 DwarfAccelTypesSection =
199 Ctx->getMachOSection("__DWARF", "__apple_types",
David Majnemer7b583052014-03-07 07:36:05 +0000[diff] [blame]200 MachO::S_ATTR_DEBUG,
Eric Christopher4996c702011-11-07 09:24:32 +0000[diff] [blame]201 SectionKind::getMetadata());
Jim Grosbachdc1e36e2012-05-11 01:41:30 +0000[diff] [blame]202
Evan Cheng76792992011-07-20 05:58:47 +0000[diff] [blame]203 DwarfAbbrevSection =
204 Ctx->getMachOSection("__DWARF", "__debug_abbrev",
David Majnemer7b583052014-03-07 07:36:05 +0000[diff] [blame]205 MachO::S_ATTR_DEBUG,
Evan Cheng76792992011-07-20 05:58:47 +0000[diff] [blame]206 SectionKind::getMetadata());
207 DwarfInfoSection =
208 Ctx->getMachOSection("__DWARF", "__debug_info",
David Majnemer7b583052014-03-07 07:36:05 +0000[diff] [blame]209 MachO::S_ATTR_DEBUG,
Evan Cheng76792992011-07-20 05:58:47 +0000[diff] [blame]210 SectionKind::getMetadata());
211 DwarfLineSection =
212 Ctx->getMachOSection("__DWARF", "__debug_line",
David Majnemer7b583052014-03-07 07:36:05 +0000[diff] [blame]213 MachO::S_ATTR_DEBUG,
Evan Cheng76792992011-07-20 05:58:47 +0000[diff] [blame]214 SectionKind::getMetadata());
215 DwarfFrameSection =
216 Ctx->getMachOSection("__DWARF", "__debug_frame",
David Majnemer7b583052014-03-07 07:36:05 +0000[diff] [blame]217 MachO::S_ATTR_DEBUG,
Evan Cheng76792992011-07-20 05:58:47 +0000[diff] [blame]218 SectionKind::getMetadata());
Krzysztof Parzyszek228daa62013-02-12 18:00:14 +0000[diff] [blame]219 DwarfPubNamesSection =
220 Ctx->getMachOSection("__DWARF", "__debug_pubnames",
David Majnemer7b583052014-03-07 07:36:05 +0000[diff] [blame]221 MachO::S_ATTR_DEBUG,
Krzysztof Parzyszek228daa62013-02-12 18:00:14 +0000[diff] [blame]222 SectionKind::getMetadata());
Evan Cheng76792992011-07-20 05:58:47 +0000[diff] [blame]223 DwarfPubTypesSection =
224 Ctx->getMachOSection("__DWARF", "__debug_pubtypes",
David Majnemer7b583052014-03-07 07:36:05 +0000[diff] [blame]225 MachO::S_ATTR_DEBUG,
Evan Cheng76792992011-07-20 05:58:47 +0000[diff] [blame]226 SectionKind::getMetadata());
Eric Christopherb0e76942013-09-09 20:03:14 +0000[diff] [blame]227 DwarfGnuPubNamesSection =
228 Ctx->getMachOSection("__DWARF", "__debug_gnu_pubn",
David Majnemer7b583052014-03-07 07:36:05 +0000[diff] [blame]229 MachO::S_ATTR_DEBUG,
Eric Christopherb0e76942013-09-09 20:03:14 +0000[diff] [blame]230 SectionKind::getMetadata());
231 DwarfGnuPubTypesSection =
232 Ctx->getMachOSection("__DWARF", "__debug_gnu_pubt",
David Majnemer7b583052014-03-07 07:36:05 +0000[diff] [blame]233 MachO::S_ATTR_DEBUG,
Eric Christopherb0e76942013-09-09 20:03:14 +0000[diff] [blame]234 SectionKind::getMetadata());
Evan Cheng76792992011-07-20 05:58:47 +0000[diff] [blame]235 DwarfStrSection =
236 Ctx->getMachOSection("__DWARF", "__debug_str",
David Majnemer7b583052014-03-07 07:36:05 +0000[diff] [blame]237 MachO::S_ATTR_DEBUG,
Evan Cheng76792992011-07-20 05:58:47 +0000[diff] [blame]238 SectionKind::getMetadata());
239 DwarfLocSection =
240 Ctx->getMachOSection("__DWARF", "__debug_loc",
David Majnemer7b583052014-03-07 07:36:05 +0000[diff] [blame]241 MachO::S_ATTR_DEBUG,
Evan Cheng76792992011-07-20 05:58:47 +0000[diff] [blame]242 SectionKind::getMetadata());
243 DwarfARangesSection =
244 Ctx->getMachOSection("__DWARF", "__debug_aranges",
David Majnemer7b583052014-03-07 07:36:05 +0000[diff] [blame]245 MachO::S_ATTR_DEBUG,
Evan Cheng76792992011-07-20 05:58:47 +0000[diff] [blame]246 SectionKind::getMetadata());
247 DwarfRangesSection =
248 Ctx->getMachOSection("__DWARF", "__debug_ranges",
David Majnemer7b583052014-03-07 07:36:05 +0000[diff] [blame]249 MachO::S_ATTR_DEBUG,
Evan Cheng76792992011-07-20 05:58:47 +0000[diff] [blame]250 SectionKind::getMetadata());
251 DwarfMacroInfoSection =
252 Ctx->getMachOSection("__DWARF", "__debug_macinfo",
David Majnemer7b583052014-03-07 07:36:05 +0000[diff] [blame]253 MachO::S_ATTR_DEBUG,
Evan Cheng76792992011-07-20 05:58:47 +0000[diff] [blame]254 SectionKind::getMetadata());
255 DwarfDebugInlineSection =
256 Ctx->getMachOSection("__DWARF", "__debug_inlined",
David Majnemer7b583052014-03-07 07:36:05 +0000[diff] [blame]257 MachO::S_ATTR_DEBUG,
Evan Cheng76792992011-07-20 05:58:47 +0000[diff] [blame]258 SectionKind::getMetadata());
Lang Hames30789772013-11-08 22:14:49 +0000[diff] [blame]259 StackMapSection =
260 Ctx->getMachOSection("__LLVM_STACKMAPS", "__llvm_stackmaps", 0,
261 SectionKind::getMetadata());
Evan Cheng76792992011-07-20 05:58:47 +0000[diff] [blame]262
263 TLSExtraDataSection = TLSTLVSection;
264}
265
266void MCObjectFileInfo::InitELFMCObjectFileInfo(Triple T) {
Joerg Sonnenberger7c442522014-04-30 23:23:14 +0000[diff] [blame]267 switch (T.getArch()) {
268 case Triple::mips:
269 case Triple::mipsel:
Rafael Espindolab9b7ae02013-04-03 03:13:19 +0000[diff] [blame]270 FDECFIEncoding = dwarf::DW_EH_PE_sdata4;
Joerg Sonnenberger7c442522014-04-30 23:23:14 +0000[diff] [blame]271 break;
272 case Triple::mips64:
273 case Triple::mips64el:
Rafael Espindolab9b7ae02013-04-03 03:13:19 +0000[diff] [blame]274 FDECFIEncoding = dwarf::DW_EH_PE_sdata8;
Joerg Sonnenberger7c442522014-04-30 23:23:14 +0000[diff] [blame]275 break;
276 default:
Rafael Espindolaef9d3492013-03-15 05:51:57 +0000[diff] [blame]277 FDECFIEncoding = dwarf::DW_EH_PE_pcrel | dwarf::DW_EH_PE_sdata4;
Joerg Sonnenberger7c442522014-04-30 23:23:14 +0000[diff] [blame]278 break;
279 }
Rafael Espindolaef9d3492013-03-15 05:51:57 +0000[diff] [blame]280
Joerg Sonnenberger7c442522014-04-30 23:23:14 +0000[diff] [blame]281 switch (T.getArch()) {
Joerg Sonnenbergercf86ce12014-05-07 07:49:34 +0000[diff] [blame]282 case Triple::arm:
283 case Triple::armeb:
284 case Triple::thumb:
285 case Triple::thumbeb:
Joerg Sonnenberger94cbb662014-05-13 17:58:13 +0000[diff] [blame]286 if (Ctx->getAsmInfo()->getExceptionHandlingType() == ExceptionHandling::ARM)
287 break;
288 // Fallthrough if not using EHABI
Joerg Sonnenberger6637d4e2014-07-24 19:25:16 +0000[diff] [blame]289 case Triple::ppc:
Joerg Sonnenberger7c442522014-04-30 23:23:14 +0000[diff] [blame]290 case Triple::x86:
Evan Chengbbf3b0d2011-07-20 19:50:42 +0000[diff] [blame]291 PersonalityEncoding = (RelocM == Reloc::PIC_)
Jim Grosbach0dde3492011-11-15 16:46:22 +0000[diff] [blame]292 ? dwarf::DW_EH_PE_indirect | dwarf::DW_EH_PE_pcrel | dwarf::DW_EH_PE_sdata4
293 : dwarf::DW_EH_PE_absptr;
Evan Chengbbf3b0d2011-07-20 19:50:42 +0000[diff] [blame]294 LSDAEncoding = (RelocM == Reloc::PIC_)
295 ? dwarf::DW_EH_PE_pcrel | dwarf::DW_EH_PE_sdata4
296 : dwarf::DW_EH_PE_absptr;
Evan Chengbbf3b0d2011-07-20 19:50:42 +0000[diff] [blame]297 TTypeEncoding = (RelocM == Reloc::PIC_)
Jim Grosbach0dde3492011-11-15 16:46:22 +0000[diff] [blame]298 ? dwarf::DW_EH_PE_indirect | dwarf::DW_EH_PE_pcrel | dwarf::DW_EH_PE_sdata4
299 : dwarf::DW_EH_PE_absptr;
Joerg Sonnenberger7c442522014-04-30 23:23:14 +0000[diff] [blame]300 break;
301 case Triple::x86_64:
Evan Chengbbf3b0d2011-07-20 19:50:42 +0000[diff] [blame]302 if (RelocM == Reloc::PIC_) {
303 PersonalityEncoding = dwarf::DW_EH_PE_indirect | dwarf::DW_EH_PE_pcrel |
304 ((CMModel == CodeModel::Small || CMModel == CodeModel::Medium)
305 ? dwarf::DW_EH_PE_sdata4 : dwarf::DW_EH_PE_sdata8);
306 LSDAEncoding = dwarf::DW_EH_PE_pcrel |
307 (CMModel == CodeModel::Small
308 ? dwarf::DW_EH_PE_sdata4 : dwarf::DW_EH_PE_sdata8);
Evan Chengbbf3b0d2011-07-20 19:50:42 +0000[diff] [blame]309 TTypeEncoding = dwarf::DW_EH_PE_indirect | dwarf::DW_EH_PE_pcrel |
310 ((CMModel == CodeModel::Small || CMModel == CodeModel::Medium)
311 ? dwarf::DW_EH_PE_sdata4 : dwarf::DW_EH_PE_sdata8);
312 } else {
313 PersonalityEncoding =
314 (CMModel == CodeModel::Small || CMModel == CodeModel::Medium)
315 ? dwarf::DW_EH_PE_udata4 : dwarf::DW_EH_PE_absptr;
316 LSDAEncoding = (CMModel == CodeModel::Small)
317 ? dwarf::DW_EH_PE_udata4 : dwarf::DW_EH_PE_absptr;
Evan Chengbbf3b0d2011-07-20 19:50:42 +0000[diff] [blame]318 TTypeEncoding = (CMModel == CodeModel::Small)
319 ? dwarf::DW_EH_PE_udata4 : dwarf::DW_EH_PE_absptr;
320 }
Joerg Sonnenberger7c442522014-04-30 23:23:14 +0000[diff] [blame]321 break;
322 case Triple::aarch64:
323 case Triple::aarch64_be:
Tim Northovere0e3aef2013-01-31 12:12:40 +0000[diff] [blame]324 // The small model guarantees static code/data size < 4GB, but not where it
325 // will be in memory. Most of these could end up >2GB away so even a signed
326 // pc-relative 32-bit address is insufficient, theoretically.
327 if (RelocM == Reloc::PIC_) {
328 PersonalityEncoding = dwarf::DW_EH_PE_indirect | dwarf::DW_EH_PE_pcrel |
329 dwarf::DW_EH_PE_sdata8;
330 LSDAEncoding = dwarf::DW_EH_PE_pcrel | dwarf::DW_EH_PE_sdata8;
Tim Northovere0e3aef2013-01-31 12:12:40 +0000[diff] [blame]331 TTypeEncoding = dwarf::DW_EH_PE_indirect | dwarf::DW_EH_PE_pcrel |
332 dwarf::DW_EH_PE_sdata8;
333 } else {
334 PersonalityEncoding = dwarf::DW_EH_PE_absptr;
335 LSDAEncoding = dwarf::DW_EH_PE_absptr;
Tim Northovere0e3aef2013-01-31 12:12:40 +0000[diff] [blame]336 TTypeEncoding = dwarf::DW_EH_PE_absptr;
337 }
Joerg Sonnenberger7c442522014-04-30 23:23:14 +0000[diff] [blame]338 break;
Logan Chienc0029812014-05-30 16:48:56 +0000[diff] [blame]339 case Triple::mips:
340 case Triple::mipsel:
Petar Jovanovic35f05742014-11-05 22:42:31 +0000[diff] [blame]341 case Triple::mips64:
342 case Triple::mips64el:
Logan Chienc0029812014-05-30 16:48:56 +0000[diff] [blame]343 // MIPS uses indirect pointer to refer personality functions, so that the
344 // eh_frame section can be read-only. DW.ref.personality will be generated
345 // for relocation.
346 PersonalityEncoding = dwarf::DW_EH_PE_indirect;
347 break;
Joerg Sonnenberger7c442522014-04-30 23:23:14 +0000[diff] [blame]348 case Triple::ppc64:
349 case Triple::ppc64le:
Adhemerval Zanella1ae22482013-01-09 17:08:15 +0000[diff] [blame]350 PersonalityEncoding = dwarf::DW_EH_PE_indirect | dwarf::DW_EH_PE_pcrel |
351 dwarf::DW_EH_PE_udata8;
Adhemerval Zanella1ae22482013-01-09 17:08:15 +0000[diff] [blame]352 LSDAEncoding = dwarf::DW_EH_PE_pcrel | dwarf::DW_EH_PE_udata8;
Adhemerval Zanella1ae22482013-01-09 17:08:15 +0000[diff] [blame]353 TTypeEncoding = dwarf::DW_EH_PE_indirect | dwarf::DW_EH_PE_pcrel |
354 dwarf::DW_EH_PE_udata8;
Joerg Sonnenberger7c442522014-04-30 23:23:14 +0000[diff] [blame]355 break;
356 case Triple::sparc:
Jakob Stoklund Olesen83c67732014-01-28 02:52:26 +0000[diff] [blame]357 if (RelocM == Reloc::PIC_) {
358 LSDAEncoding = dwarf::DW_EH_PE_pcrel | dwarf::DW_EH_PE_sdata4;
359 PersonalityEncoding = dwarf::DW_EH_PE_indirect | dwarf::DW_EH_PE_pcrel |
360 dwarf::DW_EH_PE_sdata4;
Jakob Stoklund Olesen83c67732014-01-28 02:52:26 +0000[diff] [blame]361 TTypeEncoding = dwarf::DW_EH_PE_indirect | dwarf::DW_EH_PE_pcrel |
362 dwarf::DW_EH_PE_sdata4;
363 } else {
364 LSDAEncoding = dwarf::DW_EH_PE_absptr;
365 PersonalityEncoding = dwarf::DW_EH_PE_absptr;
Jakob Stoklund Olesen83c67732014-01-28 02:52:26 +0000[diff] [blame]366 TTypeEncoding = dwarf::DW_EH_PE_absptr;
367 }
Joerg Sonnenbergerfa9cf652014-04-30 23:36:24 +0000[diff] [blame]368 break;
Joerg Sonnenberger7c442522014-04-30 23:23:14 +0000[diff] [blame]369 case Triple::sparcv9:
Jakob Stoklund Olesen83c67732014-01-28 02:52:26 +0000[diff] [blame]370 LSDAEncoding = dwarf::DW_EH_PE_pcrel | dwarf::DW_EH_PE_sdata4;
371 if (RelocM == Reloc::PIC_) {
372 PersonalityEncoding = dwarf::DW_EH_PE_indirect | dwarf::DW_EH_PE_pcrel |
373 dwarf::DW_EH_PE_sdata4;
Jakob Stoklund Olesen83c67732014-01-28 02:52:26 +0000[diff] [blame]374 TTypeEncoding = dwarf::DW_EH_PE_indirect | dwarf::DW_EH_PE_pcrel |
375 dwarf::DW_EH_PE_sdata4;
376 } else {
377 PersonalityEncoding = dwarf::DW_EH_PE_absptr;
Jakob Stoklund Olesen83c67732014-01-28 02:52:26 +0000[diff] [blame]378 TTypeEncoding = dwarf::DW_EH_PE_absptr;
379 }
Joerg Sonnenbergerfa9cf652014-04-30 23:36:24 +0000[diff] [blame]380 break;
Joerg Sonnenberger7c442522014-04-30 23:23:14 +0000[diff] [blame]381 case Triple::systemz:
Ulrich Weigand0213e7f2013-05-06 16:11:12 +0000[diff] [blame]382 // All currently-defined code models guarantee that 4-byte PC-relative
383 // values will be in range.
Ulrich Weigande7c6dfe2013-05-06 17:28:30 +0000[diff] [blame]384 if (RelocM == Reloc::PIC_) {
385 PersonalityEncoding = dwarf::DW_EH_PE_indirect | dwarf::DW_EH_PE_pcrel |
386 dwarf::DW_EH_PE_sdata4;
387 LSDAEncoding = dwarf::DW_EH_PE_pcrel | dwarf::DW_EH_PE_sdata4;
Ulrich Weigande7c6dfe2013-05-06 17:28:30 +0000[diff] [blame]388 TTypeEncoding = dwarf::DW_EH_PE_indirect | dwarf::DW_EH_PE_pcrel |
389 dwarf::DW_EH_PE_sdata4;
390 } else {
391 PersonalityEncoding = dwarf::DW_EH_PE_absptr;
392 LSDAEncoding = dwarf::DW_EH_PE_absptr;
Ulrich Weigande7c6dfe2013-05-06 17:28:30 +0000[diff] [blame]393 TTypeEncoding = dwarf::DW_EH_PE_absptr;
394 }
Joerg Sonnenbergerfa9cf652014-04-30 23:36:24 +0000[diff] [blame]395 break;
Joerg Sonnenberger7c442522014-04-30 23:23:14 +0000[diff] [blame]396 default:
397 break;
Evan Chengbbf3b0d2011-07-20 19:50:42 +0000[diff] [blame]398 }
399
David Chisnall07f8d3e2012-02-17 17:31:15 +0000[diff] [blame]400 // Solaris requires different flags for .eh_frame to seemingly every other
401 // platform.
David Chisnallbbec8722012-04-10 11:44:33 +0000[diff] [blame]402 EHSectionType = ELF::SHT_PROGBITS;
David Chisnall07f8d3e2012-02-17 17:31:15 +0000[diff] [blame]403 EHSectionFlags = ELF::SHF_ALLOC;
Simon Pilgrima2794102014-11-22 19:12:10 +0000[diff] [blame^]404 if (T.isOSSolaris()) {
David Chisnallbbec8722012-04-10 11:44:33 +0000[diff] [blame]405 if (T.getArch() == Triple::x86_64)
406 EHSectionType = ELF::SHT_X86_64_UNWIND;
407 else
408 EHSectionFlags |= ELF::SHF_WRITE;
409 }
David Chisnall07f8d3e2012-02-17 17:31:15 +0000[diff] [blame]410
411
Evan Cheng76792992011-07-20 05:58:47 +0000[diff] [blame]412 // ELF
413 BSSSection =
414 Ctx->getELFSection(".bss", ELF::SHT_NOBITS,
Anton Korobeynikov7722a2d2012-01-25 22:24:19 +0000[diff] [blame]415 ELF::SHF_WRITE | ELF::SHF_ALLOC,
Evan Cheng76792992011-07-20 05:58:47 +0000[diff] [blame]416 SectionKind::getBSS());
417
418 TextSection =
419 Ctx->getELFSection(".text", ELF::SHT_PROGBITS,
420 ELF::SHF_EXECINSTR |
421 ELF::SHF_ALLOC,
422 SectionKind::getText());
423
424 DataSection =
425 Ctx->getELFSection(".data", ELF::SHT_PROGBITS,
426 ELF::SHF_WRITE |ELF::SHF_ALLOC,
427 SectionKind::getDataRel());
428
429 ReadOnlySection =
430 Ctx->getELFSection(".rodata", ELF::SHT_PROGBITS,
431 ELF::SHF_ALLOC,
432 SectionKind::getReadOnly());
433
434 TLSDataSection =
435 Ctx->getELFSection(".tdata", ELF::SHT_PROGBITS,
436 ELF::SHF_ALLOC | ELF::SHF_TLS |
437 ELF::SHF_WRITE,
438 SectionKind::getThreadData());
439
440 TLSBSSSection =
441 Ctx->getELFSection(".tbss", ELF::SHT_NOBITS,
442 ELF::SHF_ALLOC | ELF::SHF_TLS |
443 ELF::SHF_WRITE,
444 SectionKind::getThreadBSS());
445
446 DataRelSection =
447 Ctx->getELFSection(".data.rel", ELF::SHT_PROGBITS,
448 ELF::SHF_ALLOC |ELF::SHF_WRITE,
449 SectionKind::getDataRel());
450
451 DataRelLocalSection =
452 Ctx->getELFSection(".data.rel.local", ELF::SHT_PROGBITS,
453 ELF::SHF_ALLOC |ELF::SHF_WRITE,
454 SectionKind::getDataRelLocal());
455
456 DataRelROSection =
457 Ctx->getELFSection(".data.rel.ro", ELF::SHT_PROGBITS,
458 ELF::SHF_ALLOC |ELF::SHF_WRITE,
459 SectionKind::getReadOnlyWithRel());
460
461 DataRelROLocalSection =
462 Ctx->getELFSection(".data.rel.ro.local", ELF::SHT_PROGBITS,
463 ELF::SHF_ALLOC |ELF::SHF_WRITE,
464 SectionKind::getReadOnlyWithRelLocal());
465
466 MergeableConst4Section =
467 Ctx->getELFSection(".rodata.cst4", ELF::SHT_PROGBITS,
468 ELF::SHF_ALLOC |ELF::SHF_MERGE,
469 SectionKind::getMergeableConst4());
470
471 MergeableConst8Section =
472 Ctx->getELFSection(".rodata.cst8", ELF::SHT_PROGBITS,
473 ELF::SHF_ALLOC |ELF::SHF_MERGE,
474 SectionKind::getMergeableConst8());
475
476 MergeableConst16Section =
477 Ctx->getELFSection(".rodata.cst16", ELF::SHT_PROGBITS,
478 ELF::SHF_ALLOC |ELF::SHF_MERGE,
479 SectionKind::getMergeableConst16());
480
481 StaticCtorSection =
482 Ctx->getELFSection(".ctors", ELF::SHT_PROGBITS,
483 ELF::SHF_ALLOC |ELF::SHF_WRITE,
484 SectionKind::getDataRel());
485
486 StaticDtorSection =
487 Ctx->getELFSection(".dtors", ELF::SHT_PROGBITS,
488 ELF::SHF_ALLOC |ELF::SHF_WRITE,
489 SectionKind::getDataRel());
490
491 // Exception Handling Sections.
492
493 // FIXME: We're emitting LSDA info into a readonly section on ELF, even though
494 // it contains relocatable pointers. In PIC mode, this is probably a big
495 // runtime hit for C++ apps. Either the contents of the LSDA need to be
496 // adjusted or this should be a data section.
497 LSDASection =
498 Ctx->getELFSection(".gcc_except_table", ELF::SHT_PROGBITS,
499 ELF::SHF_ALLOC,
500 SectionKind::getReadOnly());
501
Craig Topperbb694de2014-04-13 04:57:38 +0000[diff] [blame]502 COFFDebugSymbolsSection = nullptr;
Timur Iskhodzhanovf166f6c2014-01-30 01:39:17 +0000[diff] [blame]503
Evan Cheng76792992011-07-20 05:58:47 +0000[diff] [blame]504 // Debug Info Sections.
505 DwarfAbbrevSection =
506 Ctx->getELFSection(".debug_abbrev", ELF::SHT_PROGBITS, 0,
507 SectionKind::getMetadata());
508 DwarfInfoSection =
509 Ctx->getELFSection(".debug_info", ELF::SHT_PROGBITS, 0,
510 SectionKind::getMetadata());
511 DwarfLineSection =
512 Ctx->getELFSection(".debug_line", ELF::SHT_PROGBITS, 0,
513 SectionKind::getMetadata());
514 DwarfFrameSection =
515 Ctx->getELFSection(".debug_frame", ELF::SHT_PROGBITS, 0,
516 SectionKind::getMetadata());
Krzysztof Parzyszek228daa62013-02-12 18:00:14 +0000[diff] [blame]517 DwarfPubNamesSection =
518 Ctx->getELFSection(".debug_pubnames", ELF::SHT_PROGBITS, 0,
519 SectionKind::getMetadata());
Evan Cheng76792992011-07-20 05:58:47 +0000[diff] [blame]520 DwarfPubTypesSection =
521 Ctx->getELFSection(".debug_pubtypes", ELF::SHT_PROGBITS, 0,
522 SectionKind::getMetadata());
Eric Christopherb0e76942013-09-09 20:03:14 +0000[diff] [blame]523 DwarfGnuPubNamesSection =
524 Ctx->getELFSection(".debug_gnu_pubnames", ELF::SHT_PROGBITS, 0,
525 SectionKind::getMetadata());
526 DwarfGnuPubTypesSection =
527 Ctx->getELFSection(".debug_gnu_pubtypes", ELF::SHT_PROGBITS, 0,
528 SectionKind::getMetadata());
Evan Cheng76792992011-07-20 05:58:47 +0000[diff] [blame]529 DwarfStrSection =
Nick Lewycky1a62d782011-10-26 18:44:32 +0000[diff] [blame]530 Ctx->getELFSection(".debug_str", ELF::SHT_PROGBITS,
531 ELF::SHF_MERGE | ELF::SHF_STRINGS,
532 SectionKind::getMergeable1ByteCString());
Evan Cheng76792992011-07-20 05:58:47 +0000[diff] [blame]533 DwarfLocSection =
534 Ctx->getELFSection(".debug_loc", ELF::SHT_PROGBITS, 0,
535 SectionKind::getMetadata());
536 DwarfARangesSection =
537 Ctx->getELFSection(".debug_aranges", ELF::SHT_PROGBITS, 0,
538 SectionKind::getMetadata());
539 DwarfRangesSection =
540 Ctx->getELFSection(".debug_ranges", ELF::SHT_PROGBITS, 0,
541 SectionKind::getMetadata());
542 DwarfMacroInfoSection =
543 Ctx->getELFSection(".debug_macinfo", ELF::SHT_PROGBITS, 0,
544 SectionKind::getMetadata());
Eric Christopher27ed8ec2012-11-28 02:49:34 +0000[diff] [blame]545
546 // DWARF5 Experimental Debug Info
547
548 // Accelerator Tables
Eric Christophera0ad67d2012-10-08 21:41:30 +0000[diff] [blame]549 DwarfAccelNamesSection =
550 Ctx->getELFSection(".apple_names", ELF::SHT_PROGBITS, 0,
551 SectionKind::getMetadata());
552 DwarfAccelObjCSection =
553 Ctx->getELFSection(".apple_objc", ELF::SHT_PROGBITS, 0,
554 SectionKind::getMetadata());
555 DwarfAccelNamespaceSection =
556 Ctx->getELFSection(".apple_namespaces", ELF::SHT_PROGBITS, 0,
557 SectionKind::getMetadata());
558 DwarfAccelTypesSection =
559 Ctx->getELFSection(".apple_types", ELF::SHT_PROGBITS, 0,
560 SectionKind::getMetadata());
Eric Christopherc3b434b2012-11-28 02:49:38 +0000[diff] [blame]561
562 // Fission Sections
563 DwarfInfoDWOSection =
564 Ctx->getELFSection(".debug_info.dwo", ELF::SHT_PROGBITS, 0,
565 SectionKind::getMetadata());
David Blaikie29459ae2014-07-25 17:11:58 +0000[diff] [blame]566 DwarfTypesDWOSection =
567 Ctx->getELFSection(".debug_types.dwo", ELF::SHT_PROGBITS, 0,
568 SectionKind::getMetadata());
Eric Christopher3c230092012-11-30 06:47:06 +0000[diff] [blame]569 DwarfAbbrevDWOSection =
570 Ctx->getELFSection(".debug_abbrev.dwo", ELF::SHT_PROGBITS, 0,
571 SectionKind::getMetadata());
572 DwarfStrDWOSection =
573 Ctx->getELFSection(".debug_str.dwo", ELF::SHT_PROGBITS,
574 ELF::SHF_MERGE | ELF::SHF_STRINGS,
575 SectionKind::getMergeable1ByteCString());
576 DwarfLineDWOSection =
577 Ctx->getELFSection(".debug_line.dwo", ELF::SHT_PROGBITS, 0,
578 SectionKind::getMetadata());
579 DwarfLocDWOSection =
580 Ctx->getELFSection(".debug_loc.dwo", ELF::SHT_PROGBITS, 0,
581 SectionKind::getMetadata());
Eric Christopherc0fa8672013-01-04 17:59:22 +0000[diff] [blame]582 DwarfStrOffDWOSection =
583 Ctx->getELFSection(".debug_str_offsets.dwo", ELF::SHT_PROGBITS, 0,
584 SectionKind::getMetadata());
Eric Christopher962c9082013-01-15 23:56:56 +0000[diff] [blame]585 DwarfAddrSection =
586 Ctx->getELFSection(".debug_addr", ELF::SHT_PROGBITS, 0,
587 SectionKind::getMetadata());
Philip Reames76846182014-08-01 18:47:09 +0000[diff] [blame]588
589 StackMapSection =
590 Ctx->getELFSection(".llvm_stackmaps", ELF::SHT_PROGBITS,
591 ELF::SHF_ALLOC,
592 SectionKind::getMetadata());
593
Evan Cheng76792992011-07-20 05:58:47 +0000[diff] [blame]594}
595
596
597void MCObjectFileInfo::InitCOFFMCObjectFileInfo(Triple T) {
Saleem Abdulrasool70a02062014-06-08 03:57:49 +0000[diff] [blame]598 bool IsWoA = T.getArch() == Triple::arm || T.getArch() == Triple::thumb;
599
David Majnemer48227a32014-09-21 09:18:07 +0000[diff] [blame]600 CommDirectiveSupportsAlignment = true;
David Majnemera9bdb322014-04-08 22:33:40 +0000[diff] [blame]601
Evan Cheng76792992011-07-20 05:58:47 +0000[diff] [blame]602 // COFF
David Majnemer3d96acb2013-08-13 01:23:53 +0000[diff] [blame]603 BSSSection =
604 Ctx->getCOFFSection(".bss",
605 COFF::IMAGE_SCN_CNT_UNINITIALIZED_DATA |
606 COFF::IMAGE_SCN_MEM_READ |
607 COFF::IMAGE_SCN_MEM_WRITE,
608 SectionKind::getBSS());
Evan Cheng76792992011-07-20 05:58:47 +0000[diff] [blame]609 TextSection =
610 Ctx->getCOFFSection(".text",
Patrik Hagglundaad35e72014-06-09 07:35:07 +0000[diff] [blame]611 (IsWoA ? COFF::IMAGE_SCN_MEM_16BIT
612 : (COFF::SectionCharacteristics)0) |
Evan Cheng76792992011-07-20 05:58:47 +0000[diff] [blame]613 COFF::IMAGE_SCN_CNT_CODE |
614 COFF::IMAGE_SCN_MEM_EXECUTE |
615 COFF::IMAGE_SCN_MEM_READ,
616 SectionKind::getText());
617 DataSection =
618 Ctx->getCOFFSection(".data",
619 COFF::IMAGE_SCN_CNT_INITIALIZED_DATA |
620 COFF::IMAGE_SCN_MEM_READ |
621 COFF::IMAGE_SCN_MEM_WRITE,
622 SectionKind::getDataRel());
623 ReadOnlySection =
624 Ctx->getCOFFSection(".rdata",
625 COFF::IMAGE_SCN_CNT_INITIALIZED_DATA |
626 COFF::IMAGE_SCN_MEM_READ,
627 SectionKind::getReadOnly());
Saleem Abdulrasoola35f04a2014-06-08 00:34:23 +0000[diff] [blame]628
Saleem Abdulrasooled7fc4b2014-06-08 00:34:27 +0000[diff] [blame]629 if (T.isKnownWindowsMSVCEnvironment() || T.isWindowsItaniumEnvironment()) {
Michael J. Spencerb560d072012-02-23 21:56:08 +0000[diff] [blame]630 StaticCtorSection =
631 Ctx->getCOFFSection(".CRT$XCU",
632 COFF::IMAGE_SCN_CNT_INITIALIZED_DATA |
633 COFF::IMAGE_SCN_MEM_READ,
634 SectionKind::getReadOnly());
Saleem Abdulrasoola35f04a2014-06-08 00:34:23 +0000[diff] [blame]635 StaticDtorSection =
636 Ctx->getCOFFSection(".CRT$XTX",
637 COFF::IMAGE_SCN_CNT_INITIALIZED_DATA |
638 COFF::IMAGE_SCN_MEM_READ,
639 SectionKind::getReadOnly());
Michael J. Spencerb560d072012-02-23 21:56:08 +0000[diff] [blame]640 } else {
641 StaticCtorSection =
642 Ctx->getCOFFSection(".ctors",
643 COFF::IMAGE_SCN_CNT_INITIALIZED_DATA |
644 COFF::IMAGE_SCN_MEM_READ |
645 COFF::IMAGE_SCN_MEM_WRITE,
646 SectionKind::getDataRel());
Anton Korobeynikov37d73002012-09-23 15:53:47 +0000[diff] [blame]647 StaticDtorSection =
648 Ctx->getCOFFSection(".dtors",
649 COFF::IMAGE_SCN_CNT_INITIALIZED_DATA |
650 COFF::IMAGE_SCN_MEM_READ |
651 COFF::IMAGE_SCN_MEM_WRITE,
652 SectionKind::getDataRel());
653 }
Evan Cheng76792992011-07-20 05:58:47 +0000[diff] [blame]654
655 // FIXME: We're emitting LSDA info into a readonly section on COFF, even
656 // though it contains relocatable pointers. In PIC mode, this is probably a
657 // big runtime hit for C++ apps. Either the contents of the LSDA need to be
658 // adjusted or this should be a data section.
NAKAMURA Takumi1db59952014-06-25 12:41:52 +0000[diff] [blame]659 assert(T.isOSWindows() && "Windows is the only supported COFF target");
660 if (T.getArch() == Triple::x86_64) {
661 // On Windows 64 with SEH, the LSDA is emitted into the .xdata section
662 LSDASection = 0;
663 } else {
664 LSDASection = Ctx->getCOFFSection(".gcc_except_table",
665 COFF::IMAGE_SCN_CNT_INITIALIZED_DATA |
666 COFF::IMAGE_SCN_MEM_READ,
667 SectionKind::getReadOnly());
668 }
Evan Cheng76792992011-07-20 05:58:47 +0000[diff] [blame]669
670 // Debug info.
Timur Iskhodzhanov31377c52014-01-28 03:48:44 +0000[diff] [blame]671 COFFDebugSymbolsSection =
672 Ctx->getCOFFSection(".debug$S",
673 COFF::IMAGE_SCN_MEM_DISCARDABLE |
674 COFF::IMAGE_SCN_CNT_INITIALIZED_DATA |
675 COFF::IMAGE_SCN_MEM_READ,
676 SectionKind::getMetadata());
677
Evan Cheng76792992011-07-20 05:58:47 +0000[diff] [blame]678 DwarfAbbrevSection =
679 Ctx->getCOFFSection(".debug_abbrev",
680 COFF::IMAGE_SCN_MEM_DISCARDABLE |
681 COFF::IMAGE_SCN_MEM_READ,
682 SectionKind::getMetadata());
683 DwarfInfoSection =
684 Ctx->getCOFFSection(".debug_info",
685 COFF::IMAGE_SCN_MEM_DISCARDABLE |
686 COFF::IMAGE_SCN_MEM_READ,
687 SectionKind::getMetadata());
688 DwarfLineSection =
689 Ctx->getCOFFSection(".debug_line",
690 COFF::IMAGE_SCN_MEM_DISCARDABLE |
691 COFF::IMAGE_SCN_MEM_READ,
692 SectionKind::getMetadata());
693 DwarfFrameSection =
694 Ctx->getCOFFSection(".debug_frame",
695 COFF::IMAGE_SCN_MEM_DISCARDABLE |
696 COFF::IMAGE_SCN_MEM_READ,
697 SectionKind::getMetadata());
Krzysztof Parzyszek228daa62013-02-12 18:00:14 +0000[diff] [blame]698 DwarfPubNamesSection =
699 Ctx->getCOFFSection(".debug_pubnames",
700 COFF::IMAGE_SCN_MEM_DISCARDABLE |
701 COFF::IMAGE_SCN_MEM_READ,
702 SectionKind::getMetadata());
Evan Cheng76792992011-07-20 05:58:47 +0000[diff] [blame]703 DwarfPubTypesSection =
704 Ctx->getCOFFSection(".debug_pubtypes",
705 COFF::IMAGE_SCN_MEM_DISCARDABLE |
706 COFF::IMAGE_SCN_MEM_READ,
707 SectionKind::getMetadata());
NAKAMURA Takumi0229e352013-09-10 06:01:56 +0000[diff] [blame]708 DwarfGnuPubNamesSection =
Eric Christopherb0e76942013-09-09 20:03:14 +0000[diff] [blame]709 Ctx->getCOFFSection(".debug_gnu_pubnames",
710 COFF::IMAGE_SCN_MEM_DISCARDABLE |
711 COFF::IMAGE_SCN_MEM_READ,
712 SectionKind::getMetadata());
NAKAMURA Takumi0229e352013-09-10 06:01:56 +0000[diff] [blame]713 DwarfGnuPubTypesSection =
Eric Christopherb0e76942013-09-09 20:03:14 +0000[diff] [blame]714 Ctx->getCOFFSection(".debug_gnu_pubtypes",
715 COFF::IMAGE_SCN_MEM_DISCARDABLE |
716 COFF::IMAGE_SCN_MEM_READ,
717 SectionKind::getMetadata());
Evan Cheng76792992011-07-20 05:58:47 +0000[diff] [blame]718 DwarfStrSection =
719 Ctx->getCOFFSection(".debug_str",
720 COFF::IMAGE_SCN_MEM_DISCARDABLE |
721 COFF::IMAGE_SCN_MEM_READ,
722 SectionKind::getMetadata());
723 DwarfLocSection =
724 Ctx->getCOFFSection(".debug_loc",
725 COFF::IMAGE_SCN_MEM_DISCARDABLE |
726 COFF::IMAGE_SCN_MEM_READ,
727 SectionKind::getMetadata());
728 DwarfARangesSection =
729 Ctx->getCOFFSection(".debug_aranges",
730 COFF::IMAGE_SCN_MEM_DISCARDABLE |
731 COFF::IMAGE_SCN_MEM_READ,
732 SectionKind::getMetadata());
733 DwarfRangesSection =
734 Ctx->getCOFFSection(".debug_ranges",
735 COFF::IMAGE_SCN_MEM_DISCARDABLE |
736 COFF::IMAGE_SCN_MEM_READ,
737 SectionKind::getMetadata());
738 DwarfMacroInfoSection =
739 Ctx->getCOFFSection(".debug_macinfo",
740 COFF::IMAGE_SCN_MEM_DISCARDABLE |
741 COFF::IMAGE_SCN_MEM_READ,
742 SectionKind::getMetadata());
David Blaikie62dd7df2014-03-26 03:05:10 +0000[diff] [blame]743 DwarfInfoDWOSection =
Saleem Abdulrasoola35f04a2014-06-08 00:34:23 +0000[diff] [blame]744 Ctx->getCOFFSection(".debug_info.dwo",
745 COFF::IMAGE_SCN_MEM_DISCARDABLE |
746 COFF::IMAGE_SCN_MEM_READ,
David Blaikie62dd7df2014-03-26 03:05:10 +0000[diff] [blame]747 SectionKind::getMetadata());
David Blaikie29459ae2014-07-25 17:11:58 +0000[diff] [blame]748 DwarfTypesDWOSection =
749 Ctx->getCOFFSection(".debug_types.dwo", COFF::IMAGE_SCN_MEM_DISCARDABLE |
750 COFF::IMAGE_SCN_MEM_READ,
751 SectionKind::getMetadata());
David Blaikie62dd7df2014-03-26 03:05:10 +0000[diff] [blame]752 DwarfAbbrevDWOSection =
Saleem Abdulrasoola35f04a2014-06-08 00:34:23 +0000[diff] [blame]753 Ctx->getCOFFSection(".debug_abbrev.dwo",
754 COFF::IMAGE_SCN_MEM_DISCARDABLE |
755 COFF::IMAGE_SCN_MEM_READ,
David Blaikie62dd7df2014-03-26 03:05:10 +0000[diff] [blame]756 SectionKind::getMetadata());
757 DwarfStrDWOSection =
Saleem Abdulrasoola35f04a2014-06-08 00:34:23 +0000[diff] [blame]758 Ctx->getCOFFSection(".debug_str.dwo",
759 COFF::IMAGE_SCN_MEM_DISCARDABLE |
760 COFF::IMAGE_SCN_MEM_READ,
David Blaikie62dd7df2014-03-26 03:05:10 +0000[diff] [blame]761 SectionKind::getMetadata());
762 DwarfLineDWOSection =
Saleem Abdulrasoola35f04a2014-06-08 00:34:23 +0000[diff] [blame]763 Ctx->getCOFFSection(".debug_line.dwo",
764 COFF::IMAGE_SCN_MEM_DISCARDABLE |
765 COFF::IMAGE_SCN_MEM_READ,
David Blaikie62dd7df2014-03-26 03:05:10 +0000[diff] [blame]766 SectionKind::getMetadata());
767 DwarfLocDWOSection =
Saleem Abdulrasoola35f04a2014-06-08 00:34:23 +0000[diff] [blame]768 Ctx->getCOFFSection(".debug_loc.dwo",
769 COFF::IMAGE_SCN_MEM_DISCARDABLE |
770 COFF::IMAGE_SCN_MEM_READ,
David Blaikie62dd7df2014-03-26 03:05:10 +0000[diff] [blame]771 SectionKind::getMetadata());
772 DwarfStrOffDWOSection =
Saleem Abdulrasoola35f04a2014-06-08 00:34:23 +0000[diff] [blame]773 Ctx->getCOFFSection(".debug_str_offsets.dwo",
774 COFF::IMAGE_SCN_MEM_DISCARDABLE |
775 COFF::IMAGE_SCN_MEM_READ,
David Blaikie62dd7df2014-03-26 03:05:10 +0000[diff] [blame]776 SectionKind::getMetadata());
Saleem Abdulrasoola35f04a2014-06-08 00:34:23 +0000[diff] [blame]777
778 DwarfAddrSection =
779 Ctx->getCOFFSection(".debug_addr",
780 COFF::IMAGE_SCN_MEM_DISCARDABLE |
781 COFF::IMAGE_SCN_MEM_READ,
782 SectionKind::getMetadata());
Evan Cheng76792992011-07-20 05:58:47 +0000[diff] [blame]783
Frederic Riss3f1a0a72014-11-14 20:33:40 +0000[diff] [blame]784 DwarfAccelNamesSection =
785 Ctx->getCOFFSection(".apple_names",
786 COFF::IMAGE_SCN_MEM_DISCARDABLE |
787 COFF::IMAGE_SCN_MEM_READ,
788 SectionKind::getMetadata());
789 DwarfAccelNamespaceSection =
790 Ctx->getCOFFSection(".apple_namespaces",
791 COFF::IMAGE_SCN_MEM_DISCARDABLE |
792 COFF::IMAGE_SCN_MEM_READ,
793 SectionKind::getMetadata());
794 DwarfAccelTypesSection =
795 Ctx->getCOFFSection(".apple_types",
796 COFF::IMAGE_SCN_MEM_DISCARDABLE |
797 COFF::IMAGE_SCN_MEM_READ,
798 SectionKind::getMetadata());
799 DwarfAccelObjCSection =
800 Ctx->getCOFFSection(".apple_objc",
801 COFF::IMAGE_SCN_MEM_DISCARDABLE |
802 COFF::IMAGE_SCN_MEM_READ,
803 SectionKind::getMetadata());
804
Evan Cheng76792992011-07-20 05:58:47 +0000[diff] [blame]805 DrectveSection =
806 Ctx->getCOFFSection(".drectve",
Saleem Abdulrasoola35f04a2014-06-08 00:34:23 +0000[diff] [blame]807 COFF::IMAGE_SCN_LNK_INFO |
808 COFF::IMAGE_SCN_LNK_REMOVE,
Evan Cheng76792992011-07-20 05:58:47 +0000[diff] [blame]809 SectionKind::getMetadata());
810
811 PDataSection =
812 Ctx->getCOFFSection(".pdata",
813 COFF::IMAGE_SCN_CNT_INITIALIZED_DATA |
Anton Korobeynikovcc8c5392012-08-08 12:46:46 +0000[diff] [blame]814 COFF::IMAGE_SCN_MEM_READ,
Evan Cheng76792992011-07-20 05:58:47 +0000[diff] [blame]815 SectionKind::getDataRel());
816
817 XDataSection =
818 Ctx->getCOFFSection(".xdata",
819 COFF::IMAGE_SCN_CNT_INITIALIZED_DATA |
Anton Korobeynikovcc8c5392012-08-08 12:46:46 +0000[diff] [blame]820 COFF::IMAGE_SCN_MEM_READ,
Evan Cheng76792992011-07-20 05:58:47 +0000[diff] [blame]821 SectionKind::getDataRel());
Saleem Abdulrasoola35f04a2014-06-08 00:34:23 +0000[diff] [blame]822
Anton Korobeynikovc6b40172012-02-11 17:26:53 +0000[diff] [blame]823 TLSDataSection =
824 Ctx->getCOFFSection(".tls$",
825 COFF::IMAGE_SCN_CNT_INITIALIZED_DATA |
826 COFF::IMAGE_SCN_MEM_READ |
827 COFF::IMAGE_SCN_MEM_WRITE,
828 SectionKind::getDataRel());
Evan Cheng76792992011-07-20 05:58:47 +0000[diff] [blame]829}
830
Saleem Abdulrasoolbdbc0082014-06-22 22:25:01 +0000[diff] [blame]831void MCObjectFileInfo::InitMCObjectFileInfo(StringRef T, Reloc::Model relocm,
Evan Chengbbf3b0d2011-07-20 19:50:42 +0000[diff] [blame]832 CodeModel::Model cm,
Evan Cheng76792992011-07-20 05:58:47 +0000[diff] [blame]833 MCContext &ctx) {
834 RelocM = relocm;
Evan Chengbbf3b0d2011-07-20 19:50:42 +0000[diff] [blame]835 CMModel = cm;
Evan Cheng76792992011-07-20 05:58:47 +0000[diff] [blame]836 Ctx = &ctx;
837
838 // Common.
839 CommDirectiveSupportsAlignment = true;
840 SupportsWeakOmittedEHFrame = true;
Tim Northoverd1c6f512014-03-29 09:03:13 +0000[diff] [blame]841 SupportsCompactUnwindWithoutEHFrame = false;
Evan Chengbbf3b0d2011-07-20 19:50:42 +0000[diff] [blame]842
Rafael Espindolaaa7851d2014-05-12 13:47:05 +0000[diff] [blame]843 PersonalityEncoding = LSDAEncoding = FDECFIEncoding = TTypeEncoding =
844 dwarf::DW_EH_PE_absptr;
Evan Chengbbf3b0d2011-07-20 19:50:42 +0000[diff] [blame]845
Bill Wendling2d1df6b2013-04-10 21:42:06 +0000[diff] [blame]846 CompactUnwindDwarfEHFrameOnly = 0;
847
Craig Topperbb694de2014-04-13 04:57:38 +0000[diff] [blame]848 EHFrameSection = nullptr; // Created on demand.
849 CompactUnwindSection = nullptr; // Used only by selected targets.
850 DwarfAccelNamesSection = nullptr; // Used only by selected targets.
851 DwarfAccelObjCSection = nullptr; // Used only by selected targets.
852 DwarfAccelNamespaceSection = nullptr; // Used only by selected targets.
853 DwarfAccelTypesSection = nullptr; // Used only by selected targets.
Evan Cheng76792992011-07-20 05:58:47 +0000[diff] [blame]854
Saleem Abdulrasoolbdbc0082014-06-22 22:25:01 +0000[diff] [blame]855 TT = Triple(T);
856
857 Triple::ArchType Arch = TT.getArch();
Evan Cheng76792992011-07-20 05:58:47 +0000[diff] [blame]858 // FIXME: Checking for Arch here to filter out bogus triples such as
859 // cellspu-apple-darwin. Perhaps we should fix in Triple?
860 if ((Arch == Triple::x86 || Arch == Triple::x86_64 ||
861 Arch == Triple::arm || Arch == Triple::thumb ||
Tim Northovere19bed72014-07-23 12:32:47 +0000[diff] [blame]862 Arch == Triple::aarch64 ||
Evan Cheng76792992011-07-20 05:58:47 +0000[diff] [blame]863 Arch == Triple::ppc || Arch == Triple::ppc64 ||
864 Arch == Triple::UnknownArch) &&
Saleem Abdulrasoolbdbc0082014-06-22 22:25:01 +0000[diff] [blame]865 (TT.isOSDarwin() || TT.isOSBinFormatMachO())) {
Evan Cheng76792992011-07-20 05:58:47 +0000[diff] [blame]866 Env = IsMachO;
Saleem Abdulrasoolbdbc0082014-06-22 22:25:01 +0000[diff] [blame]867 InitMachOMCObjectFileInfo(TT);
Saleem Abdulrasoolffdb92a702014-04-27 04:54:16 +0000[diff] [blame]868 } else if ((Arch == Triple::x86 || Arch == Triple::x86_64 ||
869 Arch == Triple::arm || Arch == Triple::thumb) &&
Saleem Abdulrasoolbdbc0082014-06-22 22:25:01 +0000[diff] [blame]870 (TT.isOSWindows() && TT.getObjectFormat() == Triple::COFF)) {
Evan Cheng76792992011-07-20 05:58:47 +0000[diff] [blame]871 Env = IsCOFF;
Saleem Abdulrasoolbdbc0082014-06-22 22:25:01 +0000[diff] [blame]872 InitCOFFMCObjectFileInfo(TT);
Evan Cheng76792992011-07-20 05:58:47 +0000[diff] [blame]873 } else {
874 Env = IsELF;
Saleem Abdulrasoolbdbc0082014-06-22 22:25:01 +0000[diff] [blame]875 InitELFMCObjectFileInfo(TT);
Evan Cheng76792992011-07-20 05:58:47 +0000[diff] [blame]876 }
877}
878
David Blaikiebc563272013-12-13 21:33:40 +0000[diff] [blame]879const MCSection *MCObjectFileInfo::getDwarfTypesSection(uint64_t Hash) const {
880 return Ctx->getELFSection(".debug_types", ELF::SHT_PROGBITS, ELF::SHF_GROUP,
881 SectionKind::getMetadata(), 0, utostr(Hash));
882}
883
David Chisnall85dd3092012-02-17 16:51:02 +0000[diff] [blame]884void MCObjectFileInfo::InitEHFrameSection() {
885 if (Env == IsMachO)
886 EHFrameSection =
887 Ctx->getMachOSection("__TEXT", "__eh_frame",
David Majnemer7b583052014-03-07 07:36:05 +0000[diff] [blame]888 MachO::S_COALESCED |
889 MachO::S_ATTR_NO_TOC |
890 MachO::S_ATTR_STRIP_STATIC_SYMS |
891 MachO::S_ATTR_LIVE_SUPPORT,
David Chisnall85dd3092012-02-17 16:51:02 +0000[diff] [blame]892 SectionKind::getReadOnly());
893 else if (Env == IsELF)
894 EHFrameSection =
David Chisnallbbec8722012-04-10 11:44:33 +0000[diff] [blame]895 Ctx->getELFSection(".eh_frame", EHSectionType,
David Chisnall07f8d3e2012-02-17 17:31:15 +0000[diff] [blame]896 EHSectionFlags,
David Chisnall85dd3092012-02-17 16:51:02 +0000[diff] [blame]897 SectionKind::getDataRel());
898 else
899 EHFrameSection =
900 Ctx->getCOFFSection(".eh_frame",
901 COFF::IMAGE_SCN_CNT_INITIALIZED_DATA |
902 COFF::IMAGE_SCN_MEM_READ |
903 COFF::IMAGE_SCN_MEM_WRITE,
904 SectionKind::getDataRel());
905}