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gerrit-public.fairphone.software / toolchain / llvm-project / aa873af53d545019d9b9da48cc21743e3dd23d1e / . / llvm / lib / MC / MCObjectFileInfo.cpp
blob: 990938edd04a02394e483fe3eb44e98d6fd56436 [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 Sonnenberger7c442522014-04-30 23:23:14 +0000[diff] [blame]289 case Triple::x86:
Evan Chengbbf3b0d2011-07-20 19:50:42 +0000[diff] [blame]290 PersonalityEncoding = (RelocM == Reloc::PIC_)
Jim Grosbach0dde3492011-11-15 16:46:22 +0000[diff] [blame]291 ? dwarf::DW_EH_PE_indirect | dwarf::DW_EH_PE_pcrel | dwarf::DW_EH_PE_sdata4
292 : dwarf::DW_EH_PE_absptr;
Evan Chengbbf3b0d2011-07-20 19:50:42 +0000[diff] [blame]293 LSDAEncoding = (RelocM == Reloc::PIC_)
294 ? dwarf::DW_EH_PE_pcrel | dwarf::DW_EH_PE_sdata4
295 : dwarf::DW_EH_PE_absptr;
Evan Chengbbf3b0d2011-07-20 19:50:42 +0000[diff] [blame]296 TTypeEncoding = (RelocM == Reloc::PIC_)
Jim Grosbach0dde3492011-11-15 16:46:22 +0000[diff] [blame]297 ? dwarf::DW_EH_PE_indirect | dwarf::DW_EH_PE_pcrel | dwarf::DW_EH_PE_sdata4
298 : dwarf::DW_EH_PE_absptr;
Joerg Sonnenberger7c442522014-04-30 23:23:14 +0000[diff] [blame]299 break;
300 case Triple::x86_64:
Evan Chengbbf3b0d2011-07-20 19:50:42 +0000[diff] [blame]301 if (RelocM == Reloc::PIC_) {
302 PersonalityEncoding = dwarf::DW_EH_PE_indirect | dwarf::DW_EH_PE_pcrel |
303 ((CMModel == CodeModel::Small || CMModel == CodeModel::Medium)
304 ? dwarf::DW_EH_PE_sdata4 : dwarf::DW_EH_PE_sdata8);
305 LSDAEncoding = dwarf::DW_EH_PE_pcrel |
306 (CMModel == CodeModel::Small
307 ? dwarf::DW_EH_PE_sdata4 : dwarf::DW_EH_PE_sdata8);
Evan Chengbbf3b0d2011-07-20 19:50:42 +0000[diff] [blame]308 TTypeEncoding = dwarf::DW_EH_PE_indirect | dwarf::DW_EH_PE_pcrel |
309 ((CMModel == CodeModel::Small || CMModel == CodeModel::Medium)
310 ? dwarf::DW_EH_PE_sdata4 : dwarf::DW_EH_PE_sdata8);
311 } else {
312 PersonalityEncoding =
313 (CMModel == CodeModel::Small || CMModel == CodeModel::Medium)
314 ? dwarf::DW_EH_PE_udata4 : dwarf::DW_EH_PE_absptr;
315 LSDAEncoding = (CMModel == CodeModel::Small)
316 ? dwarf::DW_EH_PE_udata4 : dwarf::DW_EH_PE_absptr;
Evan Chengbbf3b0d2011-07-20 19:50:42 +0000[diff] [blame]317 TTypeEncoding = (CMModel == CodeModel::Small)
318 ? dwarf::DW_EH_PE_udata4 : dwarf::DW_EH_PE_absptr;
319 }
Joerg Sonnenberger7c442522014-04-30 23:23:14 +0000[diff] [blame]320 break;
321 case Triple::aarch64:
322 case Triple::aarch64_be:
Tim Northovere0e3aef2013-01-31 12:12:40 +0000[diff] [blame]323 // The small model guarantees static code/data size < 4GB, but not where it
324 // will be in memory. Most of these could end up >2GB away so even a signed
325 // pc-relative 32-bit address is insufficient, theoretically.
326 if (RelocM == Reloc::PIC_) {
327 PersonalityEncoding = dwarf::DW_EH_PE_indirect | dwarf::DW_EH_PE_pcrel |
328 dwarf::DW_EH_PE_sdata8;
329 LSDAEncoding = dwarf::DW_EH_PE_pcrel | dwarf::DW_EH_PE_sdata8;
Tim Northovere0e3aef2013-01-31 12:12:40 +0000[diff] [blame]330 TTypeEncoding = dwarf::DW_EH_PE_indirect | dwarf::DW_EH_PE_pcrel |
331 dwarf::DW_EH_PE_sdata8;
332 } else {
333 PersonalityEncoding = dwarf::DW_EH_PE_absptr;
334 LSDAEncoding = dwarf::DW_EH_PE_absptr;
Tim Northovere0e3aef2013-01-31 12:12:40 +0000[diff] [blame]335 TTypeEncoding = dwarf::DW_EH_PE_absptr;
336 }
Joerg Sonnenberger7c442522014-04-30 23:23:14 +0000[diff] [blame]337 break;
Logan Chienc0029812014-05-30 16:48:56 +0000[diff] [blame]338 case Triple::mips:
339 case Triple::mipsel:
340 // MIPS uses indirect pointer to refer personality functions, so that the
341 // eh_frame section can be read-only. DW.ref.personality will be generated
342 // for relocation.
343 PersonalityEncoding = dwarf::DW_EH_PE_indirect;
344 break;
Joerg Sonnenberger7c442522014-04-30 23:23:14 +0000[diff] [blame]345 case Triple::ppc64:
346 case Triple::ppc64le:
Adhemerval Zanella1ae22482013-01-09 17:08:15 +0000[diff] [blame]347 PersonalityEncoding = dwarf::DW_EH_PE_indirect | dwarf::DW_EH_PE_pcrel |
348 dwarf::DW_EH_PE_udata8;
Adhemerval Zanella1ae22482013-01-09 17:08:15 +0000[diff] [blame]349 LSDAEncoding = dwarf::DW_EH_PE_pcrel | dwarf::DW_EH_PE_udata8;
Adhemerval Zanella1ae22482013-01-09 17:08:15 +0000[diff] [blame]350 TTypeEncoding = dwarf::DW_EH_PE_indirect | dwarf::DW_EH_PE_pcrel |
351 dwarf::DW_EH_PE_udata8;
Joerg Sonnenberger7c442522014-04-30 23:23:14 +0000[diff] [blame]352 break;
353 case Triple::sparc:
Jakob Stoklund Olesen83c67732014-01-28 02:52:26 +0000[diff] [blame]354 if (RelocM == Reloc::PIC_) {
355 LSDAEncoding = dwarf::DW_EH_PE_pcrel | dwarf::DW_EH_PE_sdata4;
356 PersonalityEncoding = dwarf::DW_EH_PE_indirect | dwarf::DW_EH_PE_pcrel |
357 dwarf::DW_EH_PE_sdata4;
Jakob Stoklund Olesen83c67732014-01-28 02:52:26 +0000[diff] [blame]358 TTypeEncoding = dwarf::DW_EH_PE_indirect | dwarf::DW_EH_PE_pcrel |
359 dwarf::DW_EH_PE_sdata4;
360 } else {
361 LSDAEncoding = dwarf::DW_EH_PE_absptr;
362 PersonalityEncoding = dwarf::DW_EH_PE_absptr;
Jakob Stoklund Olesen83c67732014-01-28 02:52:26 +0000[diff] [blame]363 TTypeEncoding = dwarf::DW_EH_PE_absptr;
364 }
Joerg Sonnenbergerfa9cf652014-04-30 23:36:24 +0000[diff] [blame]365 break;
Joerg Sonnenberger7c442522014-04-30 23:23:14 +0000[diff] [blame]366 case Triple::sparcv9:
Jakob Stoklund Olesen83c67732014-01-28 02:52:26 +0000[diff] [blame]367 LSDAEncoding = dwarf::DW_EH_PE_pcrel | dwarf::DW_EH_PE_sdata4;
368 if (RelocM == Reloc::PIC_) {
369 PersonalityEncoding = dwarf::DW_EH_PE_indirect | dwarf::DW_EH_PE_pcrel |
370 dwarf::DW_EH_PE_sdata4;
Jakob Stoklund Olesen83c67732014-01-28 02:52:26 +0000[diff] [blame]371 TTypeEncoding = dwarf::DW_EH_PE_indirect | dwarf::DW_EH_PE_pcrel |
372 dwarf::DW_EH_PE_sdata4;
373 } else {
374 PersonalityEncoding = dwarf::DW_EH_PE_absptr;
Jakob Stoklund Olesen83c67732014-01-28 02:52:26 +0000[diff] [blame]375 TTypeEncoding = dwarf::DW_EH_PE_absptr;
376 }
Joerg Sonnenbergerfa9cf652014-04-30 23:36:24 +0000[diff] [blame]377 break;
Joerg Sonnenberger7c442522014-04-30 23:23:14 +0000[diff] [blame]378 case Triple::systemz:
Ulrich Weigand0213e7f2013-05-06 16:11:12 +0000[diff] [blame]379 // All currently-defined code models guarantee that 4-byte PC-relative
380 // values will be in range.
Ulrich Weigande7c6dfe2013-05-06 17:28:30 +0000[diff] [blame]381 if (RelocM == Reloc::PIC_) {
382 PersonalityEncoding = dwarf::DW_EH_PE_indirect | dwarf::DW_EH_PE_pcrel |
383 dwarf::DW_EH_PE_sdata4;
384 LSDAEncoding = dwarf::DW_EH_PE_pcrel | dwarf::DW_EH_PE_sdata4;
Ulrich Weigande7c6dfe2013-05-06 17:28:30 +0000[diff] [blame]385 TTypeEncoding = dwarf::DW_EH_PE_indirect | dwarf::DW_EH_PE_pcrel |
386 dwarf::DW_EH_PE_sdata4;
387 } else {
388 PersonalityEncoding = dwarf::DW_EH_PE_absptr;
389 LSDAEncoding = dwarf::DW_EH_PE_absptr;
Ulrich Weigande7c6dfe2013-05-06 17:28:30 +0000[diff] [blame]390 TTypeEncoding = dwarf::DW_EH_PE_absptr;
391 }
Joerg Sonnenbergerfa9cf652014-04-30 23:36:24 +0000[diff] [blame]392 break;
Joerg Sonnenberger7c442522014-04-30 23:23:14 +0000[diff] [blame]393 default:
394 break;
Evan Chengbbf3b0d2011-07-20 19:50:42 +0000[diff] [blame]395 }
396
David Chisnall07f8d3e2012-02-17 17:31:15 +0000[diff] [blame]397 // Solaris requires different flags for .eh_frame to seemingly every other
398 // platform.
David Chisnallbbec8722012-04-10 11:44:33 +0000[diff] [blame]399 EHSectionType = ELF::SHT_PROGBITS;
David Chisnall07f8d3e2012-02-17 17:31:15 +0000[diff] [blame]400 EHSectionFlags = ELF::SHF_ALLOC;
David Chisnallbbec8722012-04-10 11:44:33 +0000[diff] [blame]401 if (T.getOS() == Triple::Solaris) {
402 if (T.getArch() == Triple::x86_64)
403 EHSectionType = ELF::SHT_X86_64_UNWIND;
404 else
405 EHSectionFlags |= ELF::SHF_WRITE;
406 }
David Chisnall07f8d3e2012-02-17 17:31:15 +0000[diff] [blame]407
408
Evan Cheng76792992011-07-20 05:58:47 +0000[diff] [blame]409 // ELF
410 BSSSection =
411 Ctx->getELFSection(".bss", ELF::SHT_NOBITS,
Anton Korobeynikov7722a2d2012-01-25 22:24:19 +0000[diff] [blame]412 ELF::SHF_WRITE | ELF::SHF_ALLOC,
Evan Cheng76792992011-07-20 05:58:47 +0000[diff] [blame]413 SectionKind::getBSS());
414
415 TextSection =
416 Ctx->getELFSection(".text", ELF::SHT_PROGBITS,
417 ELF::SHF_EXECINSTR |
418 ELF::SHF_ALLOC,
419 SectionKind::getText());
420
421 DataSection =
422 Ctx->getELFSection(".data", ELF::SHT_PROGBITS,
423 ELF::SHF_WRITE |ELF::SHF_ALLOC,
424 SectionKind::getDataRel());
425
426 ReadOnlySection =
427 Ctx->getELFSection(".rodata", ELF::SHT_PROGBITS,
428 ELF::SHF_ALLOC,
429 SectionKind::getReadOnly());
430
431 TLSDataSection =
432 Ctx->getELFSection(".tdata", ELF::SHT_PROGBITS,
433 ELF::SHF_ALLOC | ELF::SHF_TLS |
434 ELF::SHF_WRITE,
435 SectionKind::getThreadData());
436
437 TLSBSSSection =
438 Ctx->getELFSection(".tbss", ELF::SHT_NOBITS,
439 ELF::SHF_ALLOC | ELF::SHF_TLS |
440 ELF::SHF_WRITE,
441 SectionKind::getThreadBSS());
442
443 DataRelSection =
444 Ctx->getELFSection(".data.rel", ELF::SHT_PROGBITS,
445 ELF::SHF_ALLOC |ELF::SHF_WRITE,
446 SectionKind::getDataRel());
447
448 DataRelLocalSection =
449 Ctx->getELFSection(".data.rel.local", ELF::SHT_PROGBITS,
450 ELF::SHF_ALLOC |ELF::SHF_WRITE,
451 SectionKind::getDataRelLocal());
452
453 DataRelROSection =
454 Ctx->getELFSection(".data.rel.ro", ELF::SHT_PROGBITS,
455 ELF::SHF_ALLOC |ELF::SHF_WRITE,
456 SectionKind::getReadOnlyWithRel());
457
458 DataRelROLocalSection =
459 Ctx->getELFSection(".data.rel.ro.local", ELF::SHT_PROGBITS,
460 ELF::SHF_ALLOC |ELF::SHF_WRITE,
461 SectionKind::getReadOnlyWithRelLocal());
462
463 MergeableConst4Section =
464 Ctx->getELFSection(".rodata.cst4", ELF::SHT_PROGBITS,
465 ELF::SHF_ALLOC |ELF::SHF_MERGE,
466 SectionKind::getMergeableConst4());
467
468 MergeableConst8Section =
469 Ctx->getELFSection(".rodata.cst8", ELF::SHT_PROGBITS,
470 ELF::SHF_ALLOC |ELF::SHF_MERGE,
471 SectionKind::getMergeableConst8());
472
473 MergeableConst16Section =
474 Ctx->getELFSection(".rodata.cst16", ELF::SHT_PROGBITS,
475 ELF::SHF_ALLOC |ELF::SHF_MERGE,
476 SectionKind::getMergeableConst16());
477
478 StaticCtorSection =
479 Ctx->getELFSection(".ctors", ELF::SHT_PROGBITS,
480 ELF::SHF_ALLOC |ELF::SHF_WRITE,
481 SectionKind::getDataRel());
482
483 StaticDtorSection =
484 Ctx->getELFSection(".dtors", ELF::SHT_PROGBITS,
485 ELF::SHF_ALLOC |ELF::SHF_WRITE,
486 SectionKind::getDataRel());
487
488 // Exception Handling Sections.
489
490 // FIXME: We're emitting LSDA info into a readonly section on ELF, even though
491 // it contains relocatable pointers. In PIC mode, this is probably a big
492 // runtime hit for C++ apps. Either the contents of the LSDA need to be
493 // adjusted or this should be a data section.
494 LSDASection =
495 Ctx->getELFSection(".gcc_except_table", ELF::SHT_PROGBITS,
496 ELF::SHF_ALLOC,
497 SectionKind::getReadOnly());
498
Craig Topperbb694de2014-04-13 04:57:38 +0000[diff] [blame]499 COFFDebugSymbolsSection = nullptr;
Timur Iskhodzhanovf166f6c2014-01-30 01:39:17 +0000[diff] [blame]500
Evan Cheng76792992011-07-20 05:58:47 +0000[diff] [blame]501 // Debug Info Sections.
502 DwarfAbbrevSection =
503 Ctx->getELFSection(".debug_abbrev", ELF::SHT_PROGBITS, 0,
504 SectionKind::getMetadata());
505 DwarfInfoSection =
506 Ctx->getELFSection(".debug_info", ELF::SHT_PROGBITS, 0,
507 SectionKind::getMetadata());
508 DwarfLineSection =
509 Ctx->getELFSection(".debug_line", ELF::SHT_PROGBITS, 0,
510 SectionKind::getMetadata());
511 DwarfFrameSection =
512 Ctx->getELFSection(".debug_frame", ELF::SHT_PROGBITS, 0,
513 SectionKind::getMetadata());
Krzysztof Parzyszek228daa62013-02-12 18:00:14 +0000[diff] [blame]514 DwarfPubNamesSection =
515 Ctx->getELFSection(".debug_pubnames", ELF::SHT_PROGBITS, 0,
516 SectionKind::getMetadata());
Evan Cheng76792992011-07-20 05:58:47 +0000[diff] [blame]517 DwarfPubTypesSection =
518 Ctx->getELFSection(".debug_pubtypes", ELF::SHT_PROGBITS, 0,
519 SectionKind::getMetadata());
Eric Christopherb0e76942013-09-09 20:03:14 +0000[diff] [blame]520 DwarfGnuPubNamesSection =
521 Ctx->getELFSection(".debug_gnu_pubnames", ELF::SHT_PROGBITS, 0,
522 SectionKind::getMetadata());
523 DwarfGnuPubTypesSection =
524 Ctx->getELFSection(".debug_gnu_pubtypes", ELF::SHT_PROGBITS, 0,
525 SectionKind::getMetadata());
Evan Cheng76792992011-07-20 05:58:47 +0000[diff] [blame]526 DwarfStrSection =
Nick Lewycky1a62d782011-10-26 18:44:32 +0000[diff] [blame]527 Ctx->getELFSection(".debug_str", ELF::SHT_PROGBITS,
528 ELF::SHF_MERGE | ELF::SHF_STRINGS,
529 SectionKind::getMergeable1ByteCString());
Evan Cheng76792992011-07-20 05:58:47 +0000[diff] [blame]530 DwarfLocSection =
531 Ctx->getELFSection(".debug_loc", ELF::SHT_PROGBITS, 0,
532 SectionKind::getMetadata());
533 DwarfARangesSection =
534 Ctx->getELFSection(".debug_aranges", ELF::SHT_PROGBITS, 0,
535 SectionKind::getMetadata());
536 DwarfRangesSection =
537 Ctx->getELFSection(".debug_ranges", ELF::SHT_PROGBITS, 0,
538 SectionKind::getMetadata());
539 DwarfMacroInfoSection =
540 Ctx->getELFSection(".debug_macinfo", ELF::SHT_PROGBITS, 0,
541 SectionKind::getMetadata());
Eric Christopher27ed8ec2012-11-28 02:49:34 +0000[diff] [blame]542
543 // DWARF5 Experimental Debug Info
544
545 // Accelerator Tables
Eric Christophera0ad67d2012-10-08 21:41:30 +0000[diff] [blame]546 DwarfAccelNamesSection =
547 Ctx->getELFSection(".apple_names", ELF::SHT_PROGBITS, 0,
548 SectionKind::getMetadata());
549 DwarfAccelObjCSection =
550 Ctx->getELFSection(".apple_objc", ELF::SHT_PROGBITS, 0,
551 SectionKind::getMetadata());
552 DwarfAccelNamespaceSection =
553 Ctx->getELFSection(".apple_namespaces", ELF::SHT_PROGBITS, 0,
554 SectionKind::getMetadata());
555 DwarfAccelTypesSection =
556 Ctx->getELFSection(".apple_types", ELF::SHT_PROGBITS, 0,
557 SectionKind::getMetadata());
Eric Christopherc3b434b2012-11-28 02:49:38 +0000[diff] [blame]558
559 // Fission Sections
560 DwarfInfoDWOSection =
561 Ctx->getELFSection(".debug_info.dwo", ELF::SHT_PROGBITS, 0,
562 SectionKind::getMetadata());
Eric Christopher3c230092012-11-30 06:47:06 +0000[diff] [blame]563 DwarfAbbrevDWOSection =
564 Ctx->getELFSection(".debug_abbrev.dwo", ELF::SHT_PROGBITS, 0,
565 SectionKind::getMetadata());
566 DwarfStrDWOSection =
567 Ctx->getELFSection(".debug_str.dwo", ELF::SHT_PROGBITS,
568 ELF::SHF_MERGE | ELF::SHF_STRINGS,
569 SectionKind::getMergeable1ByteCString());
570 DwarfLineDWOSection =
571 Ctx->getELFSection(".debug_line.dwo", ELF::SHT_PROGBITS, 0,
572 SectionKind::getMetadata());
573 DwarfLocDWOSection =
574 Ctx->getELFSection(".debug_loc.dwo", ELF::SHT_PROGBITS, 0,
575 SectionKind::getMetadata());
Eric Christopherc0fa8672013-01-04 17:59:22 +0000[diff] [blame]576 DwarfStrOffDWOSection =
577 Ctx->getELFSection(".debug_str_offsets.dwo", ELF::SHT_PROGBITS, 0,
578 SectionKind::getMetadata());
Eric Christopher962c9082013-01-15 23:56:56 +0000[diff] [blame]579 DwarfAddrSection =
580 Ctx->getELFSection(".debug_addr", ELF::SHT_PROGBITS, 0,
581 SectionKind::getMetadata());
Evan Cheng76792992011-07-20 05:58:47 +0000[diff] [blame]582}
583
584
585void MCObjectFileInfo::InitCOFFMCObjectFileInfo(Triple T) {
Saleem Abdulrasool70a02062014-06-08 03:57:49 +0000[diff] [blame]586 bool IsWoA = T.getArch() == Triple::arm || T.getArch() == Triple::thumb;
587
David Majnemera9bdb322014-04-08 22:33:40 +0000[diff] [blame]588 // The object file format cannot represent common symbols with explicit
589 // alignments.
590 CommDirectiveSupportsAlignment = false;
591
Evan Cheng76792992011-07-20 05:58:47 +0000[diff] [blame]592 // COFF
David Majnemer3d96acb2013-08-13 01:23:53 +0000[diff] [blame]593 BSSSection =
594 Ctx->getCOFFSection(".bss",
595 COFF::IMAGE_SCN_CNT_UNINITIALIZED_DATA |
596 COFF::IMAGE_SCN_MEM_READ |
597 COFF::IMAGE_SCN_MEM_WRITE,
598 SectionKind::getBSS());
Evan Cheng76792992011-07-20 05:58:47 +0000[diff] [blame]599 TextSection =
600 Ctx->getCOFFSection(".text",
Patrik Hagglundaad35e72014-06-09 07:35:07 +0000[diff] [blame]601 (IsWoA ? COFF::IMAGE_SCN_MEM_16BIT
602 : (COFF::SectionCharacteristics)0) |
Evan Cheng76792992011-07-20 05:58:47 +0000[diff] [blame]603 COFF::IMAGE_SCN_CNT_CODE |
604 COFF::IMAGE_SCN_MEM_EXECUTE |
605 COFF::IMAGE_SCN_MEM_READ,
606 SectionKind::getText());
607 DataSection =
608 Ctx->getCOFFSection(".data",
609 COFF::IMAGE_SCN_CNT_INITIALIZED_DATA |
610 COFF::IMAGE_SCN_MEM_READ |
611 COFF::IMAGE_SCN_MEM_WRITE,
612 SectionKind::getDataRel());
613 ReadOnlySection =
614 Ctx->getCOFFSection(".rdata",
615 COFF::IMAGE_SCN_CNT_INITIALIZED_DATA |
616 COFF::IMAGE_SCN_MEM_READ,
617 SectionKind::getReadOnly());
Saleem Abdulrasoola35f04a2014-06-08 00:34:23 +0000[diff] [blame]618
Saleem Abdulrasooled7fc4b2014-06-08 00:34:27 +0000[diff] [blame]619 if (T.isKnownWindowsMSVCEnvironment() || T.isWindowsItaniumEnvironment()) {
Michael J. Spencerb560d072012-02-23 21:56:08 +0000[diff] [blame]620 StaticCtorSection =
621 Ctx->getCOFFSection(".CRT$XCU",
622 COFF::IMAGE_SCN_CNT_INITIALIZED_DATA |
623 COFF::IMAGE_SCN_MEM_READ,
624 SectionKind::getReadOnly());
Saleem Abdulrasoola35f04a2014-06-08 00:34:23 +0000[diff] [blame]625 StaticDtorSection =
626 Ctx->getCOFFSection(".CRT$XTX",
627 COFF::IMAGE_SCN_CNT_INITIALIZED_DATA |
628 COFF::IMAGE_SCN_MEM_READ,
629 SectionKind::getReadOnly());
Michael J. Spencerb560d072012-02-23 21:56:08 +0000[diff] [blame]630 } else {
631 StaticCtorSection =
632 Ctx->getCOFFSection(".ctors",
633 COFF::IMAGE_SCN_CNT_INITIALIZED_DATA |
634 COFF::IMAGE_SCN_MEM_READ |
635 COFF::IMAGE_SCN_MEM_WRITE,
636 SectionKind::getDataRel());
Anton Korobeynikov37d73002012-09-23 15:53:47 +0000[diff] [blame]637 StaticDtorSection =
638 Ctx->getCOFFSection(".dtors",
639 COFF::IMAGE_SCN_CNT_INITIALIZED_DATA |
640 COFF::IMAGE_SCN_MEM_READ |
641 COFF::IMAGE_SCN_MEM_WRITE,
642 SectionKind::getDataRel());
643 }
Evan Cheng76792992011-07-20 05:58:47 +0000[diff] [blame]644
645 // FIXME: We're emitting LSDA info into a readonly section on COFF, even
646 // though it contains relocatable pointers. In PIC mode, this is probably a
647 // big runtime hit for C++ apps. Either the contents of the LSDA need to be
648 // adjusted or this should be a data section.
NAKAMURA Takumi1db59952014-06-25 12:41:52 +0000[diff] [blame]649 assert(T.isOSWindows() && "Windows is the only supported COFF target");
650 if (T.getArch() == Triple::x86_64) {
651 // On Windows 64 with SEH, the LSDA is emitted into the .xdata section
652 LSDASection = 0;
653 } else {
654 LSDASection = Ctx->getCOFFSection(".gcc_except_table",
655 COFF::IMAGE_SCN_CNT_INITIALIZED_DATA |
656 COFF::IMAGE_SCN_MEM_READ,
657 SectionKind::getReadOnly());
658 }
Evan Cheng76792992011-07-20 05:58:47 +0000[diff] [blame]659
660 // Debug info.
Timur Iskhodzhanov31377c52014-01-28 03:48:44 +0000[diff] [blame]661 COFFDebugSymbolsSection =
662 Ctx->getCOFFSection(".debug$S",
663 COFF::IMAGE_SCN_MEM_DISCARDABLE |
664 COFF::IMAGE_SCN_CNT_INITIALIZED_DATA |
665 COFF::IMAGE_SCN_MEM_READ,
666 SectionKind::getMetadata());
667
Evan Cheng76792992011-07-20 05:58:47 +0000[diff] [blame]668 DwarfAbbrevSection =
669 Ctx->getCOFFSection(".debug_abbrev",
670 COFF::IMAGE_SCN_MEM_DISCARDABLE |
671 COFF::IMAGE_SCN_MEM_READ,
672 SectionKind::getMetadata());
673 DwarfInfoSection =
674 Ctx->getCOFFSection(".debug_info",
675 COFF::IMAGE_SCN_MEM_DISCARDABLE |
676 COFF::IMAGE_SCN_MEM_READ,
677 SectionKind::getMetadata());
678 DwarfLineSection =
679 Ctx->getCOFFSection(".debug_line",
680 COFF::IMAGE_SCN_MEM_DISCARDABLE |
681 COFF::IMAGE_SCN_MEM_READ,
682 SectionKind::getMetadata());
683 DwarfFrameSection =
684 Ctx->getCOFFSection(".debug_frame",
685 COFF::IMAGE_SCN_MEM_DISCARDABLE |
686 COFF::IMAGE_SCN_MEM_READ,
687 SectionKind::getMetadata());
Krzysztof Parzyszek228daa62013-02-12 18:00:14 +0000[diff] [blame]688 DwarfPubNamesSection =
689 Ctx->getCOFFSection(".debug_pubnames",
690 COFF::IMAGE_SCN_MEM_DISCARDABLE |
691 COFF::IMAGE_SCN_MEM_READ,
692 SectionKind::getMetadata());
Evan Cheng76792992011-07-20 05:58:47 +0000[diff] [blame]693 DwarfPubTypesSection =
694 Ctx->getCOFFSection(".debug_pubtypes",
695 COFF::IMAGE_SCN_MEM_DISCARDABLE |
696 COFF::IMAGE_SCN_MEM_READ,
697 SectionKind::getMetadata());
NAKAMURA Takumi0229e352013-09-10 06:01:56 +0000[diff] [blame]698 DwarfGnuPubNamesSection =
Eric Christopherb0e76942013-09-09 20:03:14 +0000[diff] [blame]699 Ctx->getCOFFSection(".debug_gnu_pubnames",
700 COFF::IMAGE_SCN_MEM_DISCARDABLE |
701 COFF::IMAGE_SCN_MEM_READ,
702 SectionKind::getMetadata());
NAKAMURA Takumi0229e352013-09-10 06:01:56 +0000[diff] [blame]703 DwarfGnuPubTypesSection =
Eric Christopherb0e76942013-09-09 20:03:14 +0000[diff] [blame]704 Ctx->getCOFFSection(".debug_gnu_pubtypes",
705 COFF::IMAGE_SCN_MEM_DISCARDABLE |
706 COFF::IMAGE_SCN_MEM_READ,
707 SectionKind::getMetadata());
Evan Cheng76792992011-07-20 05:58:47 +0000[diff] [blame]708 DwarfStrSection =
709 Ctx->getCOFFSection(".debug_str",
710 COFF::IMAGE_SCN_MEM_DISCARDABLE |
711 COFF::IMAGE_SCN_MEM_READ,
712 SectionKind::getMetadata());
713 DwarfLocSection =
714 Ctx->getCOFFSection(".debug_loc",
715 COFF::IMAGE_SCN_MEM_DISCARDABLE |
716 COFF::IMAGE_SCN_MEM_READ,
717 SectionKind::getMetadata());
718 DwarfARangesSection =
719 Ctx->getCOFFSection(".debug_aranges",
720 COFF::IMAGE_SCN_MEM_DISCARDABLE |
721 COFF::IMAGE_SCN_MEM_READ,
722 SectionKind::getMetadata());
723 DwarfRangesSection =
724 Ctx->getCOFFSection(".debug_ranges",
725 COFF::IMAGE_SCN_MEM_DISCARDABLE |
726 COFF::IMAGE_SCN_MEM_READ,
727 SectionKind::getMetadata());
728 DwarfMacroInfoSection =
729 Ctx->getCOFFSection(".debug_macinfo",
730 COFF::IMAGE_SCN_MEM_DISCARDABLE |
731 COFF::IMAGE_SCN_MEM_READ,
732 SectionKind::getMetadata());
David Blaikie62dd7df2014-03-26 03:05:10 +0000[diff] [blame]733 DwarfInfoDWOSection =
Saleem Abdulrasoola35f04a2014-06-08 00:34:23 +0000[diff] [blame]734 Ctx->getCOFFSection(".debug_info.dwo",
735 COFF::IMAGE_SCN_MEM_DISCARDABLE |
736 COFF::IMAGE_SCN_MEM_READ,
David Blaikie62dd7df2014-03-26 03:05:10 +0000[diff] [blame]737 SectionKind::getMetadata());
738 DwarfAbbrevDWOSection =
Saleem Abdulrasoola35f04a2014-06-08 00:34:23 +0000[diff] [blame]739 Ctx->getCOFFSection(".debug_abbrev.dwo",
740 COFF::IMAGE_SCN_MEM_DISCARDABLE |
741 COFF::IMAGE_SCN_MEM_READ,
David Blaikie62dd7df2014-03-26 03:05:10 +0000[diff] [blame]742 SectionKind::getMetadata());
743 DwarfStrDWOSection =
Saleem Abdulrasoola35f04a2014-06-08 00:34:23 +0000[diff] [blame]744 Ctx->getCOFFSection(".debug_str.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());
748 DwarfLineDWOSection =
Saleem Abdulrasoola35f04a2014-06-08 00:34:23 +0000[diff] [blame]749 Ctx->getCOFFSection(".debug_line.dwo",
750 COFF::IMAGE_SCN_MEM_DISCARDABLE |
751 COFF::IMAGE_SCN_MEM_READ,
David Blaikie62dd7df2014-03-26 03:05:10 +0000[diff] [blame]752 SectionKind::getMetadata());
753 DwarfLocDWOSection =
Saleem Abdulrasoola35f04a2014-06-08 00:34:23 +0000[diff] [blame]754 Ctx->getCOFFSection(".debug_loc.dwo",
755 COFF::IMAGE_SCN_MEM_DISCARDABLE |
756 COFF::IMAGE_SCN_MEM_READ,
David Blaikie62dd7df2014-03-26 03:05:10 +0000[diff] [blame]757 SectionKind::getMetadata());
758 DwarfStrOffDWOSection =
Saleem Abdulrasoola35f04a2014-06-08 00:34:23 +0000[diff] [blame]759 Ctx->getCOFFSection(".debug_str_offsets.dwo",
760 COFF::IMAGE_SCN_MEM_DISCARDABLE |
761 COFF::IMAGE_SCN_MEM_READ,
David Blaikie62dd7df2014-03-26 03:05:10 +0000[diff] [blame]762 SectionKind::getMetadata());
Saleem Abdulrasoola35f04a2014-06-08 00:34:23 +0000[diff] [blame]763
764 DwarfAddrSection =
765 Ctx->getCOFFSection(".debug_addr",
766 COFF::IMAGE_SCN_MEM_DISCARDABLE |
767 COFF::IMAGE_SCN_MEM_READ,
768 SectionKind::getMetadata());
Evan Cheng76792992011-07-20 05:58:47 +0000[diff] [blame]769
770 DrectveSection =
771 Ctx->getCOFFSection(".drectve",
Saleem Abdulrasoola35f04a2014-06-08 00:34:23 +0000[diff] [blame]772 COFF::IMAGE_SCN_LNK_INFO |
773 COFF::IMAGE_SCN_LNK_REMOVE,
Evan Cheng76792992011-07-20 05:58:47 +0000[diff] [blame]774 SectionKind::getMetadata());
775
776 PDataSection =
777 Ctx->getCOFFSection(".pdata",
778 COFF::IMAGE_SCN_CNT_INITIALIZED_DATA |
Anton Korobeynikovcc8c5392012-08-08 12:46:46 +0000[diff] [blame]779 COFF::IMAGE_SCN_MEM_READ,
Evan Cheng76792992011-07-20 05:58:47 +0000[diff] [blame]780 SectionKind::getDataRel());
781
782 XDataSection =
783 Ctx->getCOFFSection(".xdata",
784 COFF::IMAGE_SCN_CNT_INITIALIZED_DATA |
Anton Korobeynikovcc8c5392012-08-08 12:46:46 +0000[diff] [blame]785 COFF::IMAGE_SCN_MEM_READ,
Evan Cheng76792992011-07-20 05:58:47 +0000[diff] [blame]786 SectionKind::getDataRel());
Saleem Abdulrasoola35f04a2014-06-08 00:34:23 +0000[diff] [blame]787
Anton Korobeynikovc6b40172012-02-11 17:26:53 +0000[diff] [blame]788 TLSDataSection =
789 Ctx->getCOFFSection(".tls$",
790 COFF::IMAGE_SCN_CNT_INITIALIZED_DATA |
791 COFF::IMAGE_SCN_MEM_READ |
792 COFF::IMAGE_SCN_MEM_WRITE,
793 SectionKind::getDataRel());
Evan Cheng76792992011-07-20 05:58:47 +0000[diff] [blame]794}
795
Saleem Abdulrasoolbdbc0082014-06-22 22:25:01 +0000[diff] [blame]796void MCObjectFileInfo::InitMCObjectFileInfo(StringRef T, Reloc::Model relocm,
Evan Chengbbf3b0d2011-07-20 19:50:42 +0000[diff] [blame]797 CodeModel::Model cm,
Evan Cheng76792992011-07-20 05:58:47 +0000[diff] [blame]798 MCContext &ctx) {
799 RelocM = relocm;
Evan Chengbbf3b0d2011-07-20 19:50:42 +0000[diff] [blame]800 CMModel = cm;
Evan Cheng76792992011-07-20 05:58:47 +0000[diff] [blame]801 Ctx = &ctx;
802
803 // Common.
804 CommDirectiveSupportsAlignment = true;
805 SupportsWeakOmittedEHFrame = true;
Tim Northoverd1c6f512014-03-29 09:03:13 +0000[diff] [blame]806 SupportsCompactUnwindWithoutEHFrame = false;
Evan Chengbbf3b0d2011-07-20 19:50:42 +0000[diff] [blame]807
Rafael Espindolaaa7851d2014-05-12 13:47:05 +0000[diff] [blame]808 PersonalityEncoding = LSDAEncoding = FDECFIEncoding = TTypeEncoding =
809 dwarf::DW_EH_PE_absptr;
Evan Chengbbf3b0d2011-07-20 19:50:42 +0000[diff] [blame]810
Bill Wendling2d1df6b2013-04-10 21:42:06 +0000[diff] [blame]811 CompactUnwindDwarfEHFrameOnly = 0;
812
Craig Topperbb694de2014-04-13 04:57:38 +0000[diff] [blame]813 EHFrameSection = nullptr; // Created on demand.
814 CompactUnwindSection = nullptr; // Used only by selected targets.
815 DwarfAccelNamesSection = nullptr; // Used only by selected targets.
816 DwarfAccelObjCSection = nullptr; // Used only by selected targets.
817 DwarfAccelNamespaceSection = nullptr; // Used only by selected targets.
818 DwarfAccelTypesSection = nullptr; // Used only by selected targets.
Evan Cheng76792992011-07-20 05:58:47 +0000[diff] [blame]819
Saleem Abdulrasoolbdbc0082014-06-22 22:25:01 +0000[diff] [blame]820 TT = Triple(T);
821
822 Triple::ArchType Arch = TT.getArch();
Evan Cheng76792992011-07-20 05:58:47 +0000[diff] [blame]823 // FIXME: Checking for Arch here to filter out bogus triples such as
824 // cellspu-apple-darwin. Perhaps we should fix in Triple?
825 if ((Arch == Triple::x86 || Arch == Triple::x86_64 ||
826 Arch == Triple::arm || Arch == Triple::thumb ||
Tim Northovere19bed72014-07-23 12:32:47 +0000[diff] [blame]827 Arch == Triple::aarch64 ||
Evan Cheng76792992011-07-20 05:58:47 +0000[diff] [blame]828 Arch == Triple::ppc || Arch == Triple::ppc64 ||
829 Arch == Triple::UnknownArch) &&
Saleem Abdulrasoolbdbc0082014-06-22 22:25:01 +0000[diff] [blame]830 (TT.isOSDarwin() || TT.isOSBinFormatMachO())) {
Evan Cheng76792992011-07-20 05:58:47 +0000[diff] [blame]831 Env = IsMachO;
Saleem Abdulrasoolbdbc0082014-06-22 22:25:01 +0000[diff] [blame]832 InitMachOMCObjectFileInfo(TT);
Saleem Abdulrasoolffdb92a702014-04-27 04:54:16 +0000[diff] [blame]833 } else if ((Arch == Triple::x86 || Arch == Triple::x86_64 ||
834 Arch == Triple::arm || Arch == Triple::thumb) &&
Saleem Abdulrasoolbdbc0082014-06-22 22:25:01 +0000[diff] [blame]835 (TT.isOSWindows() && TT.getObjectFormat() == Triple::COFF)) {
Evan Cheng76792992011-07-20 05:58:47 +0000[diff] [blame]836 Env = IsCOFF;
Saleem Abdulrasoolbdbc0082014-06-22 22:25:01 +0000[diff] [blame]837 InitCOFFMCObjectFileInfo(TT);
Evan Cheng76792992011-07-20 05:58:47 +0000[diff] [blame]838 } else {
839 Env = IsELF;
Saleem Abdulrasoolbdbc0082014-06-22 22:25:01 +0000[diff] [blame]840 InitELFMCObjectFileInfo(TT);
Evan Cheng76792992011-07-20 05:58:47 +0000[diff] [blame]841 }
842}
843
David Blaikiebc563272013-12-13 21:33:40 +0000[diff] [blame]844const MCSection *MCObjectFileInfo::getDwarfTypesSection(uint64_t Hash) const {
845 return Ctx->getELFSection(".debug_types", ELF::SHT_PROGBITS, ELF::SHF_GROUP,
846 SectionKind::getMetadata(), 0, utostr(Hash));
847}
848
David Blaikie2da282b2014-05-21 23:27:41 +0000[diff] [blame]849const MCSection *
850MCObjectFileInfo::getDwarfTypesDWOSection(uint64_t Hash) const {
851 return Ctx->getELFSection(".debug_types.dwo", ELF::SHT_PROGBITS,
852 ELF::SHF_GROUP, SectionKind::getMetadata(), 0,
853 utostr(Hash));
854}
855
David Chisnall85dd3092012-02-17 16:51:02 +0000[diff] [blame]856void MCObjectFileInfo::InitEHFrameSection() {
857 if (Env == IsMachO)
858 EHFrameSection =
859 Ctx->getMachOSection("__TEXT", "__eh_frame",
David Majnemer7b583052014-03-07 07:36:05 +0000[diff] [blame]860 MachO::S_COALESCED |
861 MachO::S_ATTR_NO_TOC |
862 MachO::S_ATTR_STRIP_STATIC_SYMS |
863 MachO::S_ATTR_LIVE_SUPPORT,
David Chisnall85dd3092012-02-17 16:51:02 +0000[diff] [blame]864 SectionKind::getReadOnly());
865 else if (Env == IsELF)
866 EHFrameSection =
David Chisnallbbec8722012-04-10 11:44:33 +0000[diff] [blame]867 Ctx->getELFSection(".eh_frame", EHSectionType,
David Chisnall07f8d3e2012-02-17 17:31:15 +0000[diff] [blame]868 EHSectionFlags,
David Chisnall85dd3092012-02-17 16:51:02 +0000[diff] [blame]869 SectionKind::getDataRel());
870 else
871 EHFrameSection =
872 Ctx->getCOFFSection(".eh_frame",
873 COFF::IMAGE_SCN_CNT_INITIALIZED_DATA |
874 COFF::IMAGE_SCN_MEM_READ |
875 COFF::IMAGE_SCN_MEM_WRITE,
876 SectionKind::getDataRel());
877}