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gerrit-public.fairphone.software / toolchain / llvm-project / b03bc79bed672a5a11ed9d909cacae2177f830fc / . / llvm / lib / MC / MCObjectFileInfo.cpp
blob: ec1d4ba336442bbe96d38a008c7eac9381741535 [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 =
Rafael Espindola6ed58a22015-03-10 21:16:18 +0000[diff] [blame]186 Ctx->getMachOSection("__DWARF", "__apple_names", MachO::S_ATTR_DEBUG,
Rafael Espindola6b9998b2015-03-10 22:00:25 +0000[diff] [blame]187 SectionKind::getMetadata(), "names_begin");
Eric Christopher4996c702011-11-07 09:24:32 +0000[diff] [blame]188 DwarfAccelObjCSection =
Rafael Espindola6ed58a22015-03-10 21:16:18 +0000[diff] [blame]189 Ctx->getMachOSection("__DWARF", "__apple_objc", MachO::S_ATTR_DEBUG,
Rafael Espindola6b9998b2015-03-10 22:00:25 +0000[diff] [blame]190 SectionKind::getMetadata(), "objc_begin");
Eric Christopher4996c702011-11-07 09:24:32 +0000[diff] [blame]191 // 16 character section limit...
192 DwarfAccelNamespaceSection =
Rafael Espindola6ed58a22015-03-10 21:16:18 +0000[diff] [blame]193 Ctx->getMachOSection("__DWARF", "__apple_namespac", MachO::S_ATTR_DEBUG,
Rafael Espindola6b9998b2015-03-10 22:00:25 +0000[diff] [blame]194 SectionKind::getMetadata(), "namespac_begin");
Eric Christopher4996c702011-11-07 09:24:32 +0000[diff] [blame]195 DwarfAccelTypesSection =
Rafael Espindola6ed58a22015-03-10 21:16:18 +0000[diff] [blame]196 Ctx->getMachOSection("__DWARF", "__apple_types", MachO::S_ATTR_DEBUG,
Rafael Espindola6b9998b2015-03-10 22:00:25 +0000[diff] [blame]197 SectionKind::getMetadata(), "types_begin");
Jim Grosbachdc1e36e2012-05-11 01:41:30 +0000[diff] [blame]198
Evan Cheng76792992011-07-20 05:58:47 +0000[diff] [blame]199 DwarfAbbrevSection =
Rafael Espindola6ed58a22015-03-10 21:16:18 +0000[diff] [blame]200 Ctx->getMachOSection("__DWARF", "__debug_abbrev", MachO::S_ATTR_DEBUG,
Rafael Espindola6b9998b2015-03-10 22:00:25 +0000[diff] [blame]201 SectionKind::getMetadata(), "section_abbrev");
Evan Cheng76792992011-07-20 05:58:47 +0000[diff] [blame]202 DwarfInfoSection =
Rafael Espindola6ed58a22015-03-10 21:16:18 +0000[diff] [blame]203 Ctx->getMachOSection("__DWARF", "__debug_info", MachO::S_ATTR_DEBUG,
Rafael Espindola6b9998b2015-03-10 22:00:25 +0000[diff] [blame]204 SectionKind::getMetadata(), "section_info");
Evan Cheng76792992011-07-20 05:58:47 +0000[diff] [blame]205 DwarfLineSection =
Rafael Espindola6ed58a22015-03-10 21:16:18 +0000[diff] [blame]206 Ctx->getMachOSection("__DWARF", "__debug_line", MachO::S_ATTR_DEBUG,
Rafael Espindola6b9998b2015-03-10 22:00:25 +0000[diff] [blame]207 SectionKind::getMetadata(), "section_line");
Evan Cheng76792992011-07-20 05:58:47 +0000[diff] [blame]208 DwarfFrameSection =
Rafael Espindola6ed58a22015-03-10 21:16:18 +0000[diff] [blame]209 Ctx->getMachOSection("__DWARF", "__debug_frame", MachO::S_ATTR_DEBUG,
210 SectionKind::getMetadata());
Krzysztof Parzyszek228daa62013-02-12 18:00:14 +0000[diff] [blame]211 DwarfPubNamesSection =
Rafael Espindola6ed58a22015-03-10 21:16:18 +0000[diff] [blame]212 Ctx->getMachOSection("__DWARF", "__debug_pubnames", MachO::S_ATTR_DEBUG,
213 SectionKind::getMetadata());
Evan Cheng76792992011-07-20 05:58:47 +0000[diff] [blame]214 DwarfPubTypesSection =
Rafael Espindola6ed58a22015-03-10 21:16:18 +0000[diff] [blame]215 Ctx->getMachOSection("__DWARF", "__debug_pubtypes", MachO::S_ATTR_DEBUG,
216 SectionKind::getMetadata());
Eric Christopherb0e76942013-09-09 20:03:14 +0000[diff] [blame]217 DwarfGnuPubNamesSection =
Rafael Espindola6ed58a22015-03-10 21:16:18 +0000[diff] [blame]218 Ctx->getMachOSection("__DWARF", "__debug_gnu_pubn", MachO::S_ATTR_DEBUG,
219 SectionKind::getMetadata());
Eric Christopherb0e76942013-09-09 20:03:14 +0000[diff] [blame]220 DwarfGnuPubTypesSection =
Rafael Espindola6ed58a22015-03-10 21:16:18 +0000[diff] [blame]221 Ctx->getMachOSection("__DWARF", "__debug_gnu_pubt", MachO::S_ATTR_DEBUG,
222 SectionKind::getMetadata());
Evan Cheng76792992011-07-20 05:58:47 +0000[diff] [blame]223 DwarfStrSection =
Rafael Espindola6ed58a22015-03-10 21:16:18 +0000[diff] [blame]224 Ctx->getMachOSection("__DWARF", "__debug_str", MachO::S_ATTR_DEBUG,
Rafael Espindola6b9998b2015-03-10 22:00:25 +0000[diff] [blame]225 SectionKind::getMetadata(), "info_string");
Evan Cheng76792992011-07-20 05:58:47 +0000[diff] [blame]226 DwarfLocSection =
Rafael Espindola6ed58a22015-03-10 21:16:18 +0000[diff] [blame]227 Ctx->getMachOSection("__DWARF", "__debug_loc", MachO::S_ATTR_DEBUG,
Rafael Espindola6b9998b2015-03-10 22:00:25 +0000[diff] [blame]228 SectionKind::getMetadata(), "section_debug_loc");
Evan Cheng76792992011-07-20 05:58:47 +0000[diff] [blame]229 DwarfARangesSection =
Rafael Espindola6ed58a22015-03-10 21:16:18 +0000[diff] [blame]230 Ctx->getMachOSection("__DWARF", "__debug_aranges", MachO::S_ATTR_DEBUG,
231 SectionKind::getMetadata());
Evan Cheng76792992011-07-20 05:58:47 +0000[diff] [blame]232 DwarfRangesSection =
Rafael Espindola6ed58a22015-03-10 21:16:18 +0000[diff] [blame]233 Ctx->getMachOSection("__DWARF", "__debug_ranges", MachO::S_ATTR_DEBUG,
Rafael Espindola6b9998b2015-03-10 22:00:25 +0000[diff] [blame]234 SectionKind::getMetadata(), "debug_range");
Evan Cheng76792992011-07-20 05:58:47 +0000[diff] [blame]235 DwarfDebugInlineSection =
Rafael Espindola6ed58a22015-03-10 21:16:18 +0000[diff] [blame]236 Ctx->getMachOSection("__DWARF", "__debug_inlined", MachO::S_ATTR_DEBUG,
237 SectionKind::getMetadata());
238 StackMapSection = Ctx->getMachOSection("__LLVM_STACKMAPS", "__llvm_stackmaps",
239 0, SectionKind::getMetadata());
Evan Cheng76792992011-07-20 05:58:47 +0000[diff] [blame]240
241 TLSExtraDataSection = TLSTLVSection;
242}
243
244void MCObjectFileInfo::InitELFMCObjectFileInfo(Triple T) {
Joerg Sonnenberger7c442522014-04-30 23:23:14 +0000[diff] [blame]245 switch (T.getArch()) {
246 case Triple::mips:
247 case Triple::mipsel:
Rafael Espindolab9b7ae02013-04-03 03:13:19 +0000[diff] [blame]248 FDECFIEncoding = dwarf::DW_EH_PE_sdata4;
Joerg Sonnenberger7c442522014-04-30 23:23:14 +0000[diff] [blame]249 break;
250 case Triple::mips64:
251 case Triple::mips64el:
Rafael Espindolab9b7ae02013-04-03 03:13:19 +0000[diff] [blame]252 FDECFIEncoding = dwarf::DW_EH_PE_sdata8;
Joerg Sonnenberger7c442522014-04-30 23:23:14 +0000[diff] [blame]253 break;
Rafael Espindolad11591b2014-11-27 17:13:56 +0000[diff] [blame]254 case Triple::x86_64:
255 FDECFIEncoding = dwarf::DW_EH_PE_pcrel |
256 ((CMModel == CodeModel::Large) ? dwarf::DW_EH_PE_sdata8
257 : dwarf::DW_EH_PE_sdata4);
258
259 break;
Joerg Sonnenberger7c442522014-04-30 23:23:14 +0000[diff] [blame]260 default:
Rafael Espindolaef9d3492013-03-15 05:51:57 +0000[diff] [blame]261 FDECFIEncoding = dwarf::DW_EH_PE_pcrel | dwarf::DW_EH_PE_sdata4;
Joerg Sonnenberger7c442522014-04-30 23:23:14 +0000[diff] [blame]262 break;
263 }
Rafael Espindolaef9d3492013-03-15 05:51:57 +0000[diff] [blame]264
Joerg Sonnenberger7c442522014-04-30 23:23:14 +0000[diff] [blame]265 switch (T.getArch()) {
Joerg Sonnenbergercf86ce12014-05-07 07:49:34 +0000[diff] [blame]266 case Triple::arm:
267 case Triple::armeb:
268 case Triple::thumb:
269 case Triple::thumbeb:
Joerg Sonnenberger94cbb662014-05-13 17:58:13 +0000[diff] [blame]270 if (Ctx->getAsmInfo()->getExceptionHandlingType() == ExceptionHandling::ARM)
271 break;
272 // Fallthrough if not using EHABI
Joerg Sonnenberger6637d4e2014-07-24 19:25:16 +0000[diff] [blame]273 case Triple::ppc:
Joerg Sonnenberger7c442522014-04-30 23:23:14 +0000[diff] [blame]274 case Triple::x86:
Evan Chengbbf3b0d2011-07-20 19:50:42 +0000[diff] [blame]275 PersonalityEncoding = (RelocM == Reloc::PIC_)
Jim Grosbach0dde3492011-11-15 16:46:22 +0000[diff] [blame]276 ? dwarf::DW_EH_PE_indirect | dwarf::DW_EH_PE_pcrel | dwarf::DW_EH_PE_sdata4
277 : dwarf::DW_EH_PE_absptr;
Evan Chengbbf3b0d2011-07-20 19:50:42 +0000[diff] [blame]278 LSDAEncoding = (RelocM == Reloc::PIC_)
279 ? dwarf::DW_EH_PE_pcrel | dwarf::DW_EH_PE_sdata4
280 : dwarf::DW_EH_PE_absptr;
Evan Chengbbf3b0d2011-07-20 19:50:42 +0000[diff] [blame]281 TTypeEncoding = (RelocM == Reloc::PIC_)
Jim Grosbach0dde3492011-11-15 16:46:22 +0000[diff] [blame]282 ? dwarf::DW_EH_PE_indirect | dwarf::DW_EH_PE_pcrel | dwarf::DW_EH_PE_sdata4
283 : dwarf::DW_EH_PE_absptr;
Joerg Sonnenberger7c442522014-04-30 23:23:14 +0000[diff] [blame]284 break;
285 case Triple::x86_64:
Evan Chengbbf3b0d2011-07-20 19:50:42 +0000[diff] [blame]286 if (RelocM == Reloc::PIC_) {
287 PersonalityEncoding = dwarf::DW_EH_PE_indirect | dwarf::DW_EH_PE_pcrel |
288 ((CMModel == CodeModel::Small || CMModel == CodeModel::Medium)
289 ? dwarf::DW_EH_PE_sdata4 : dwarf::DW_EH_PE_sdata8);
290 LSDAEncoding = dwarf::DW_EH_PE_pcrel |
291 (CMModel == CodeModel::Small
292 ? dwarf::DW_EH_PE_sdata4 : dwarf::DW_EH_PE_sdata8);
Evan Chengbbf3b0d2011-07-20 19:50:42 +0000[diff] [blame]293 TTypeEncoding = dwarf::DW_EH_PE_indirect | dwarf::DW_EH_PE_pcrel |
294 ((CMModel == CodeModel::Small || CMModel == CodeModel::Medium)
295 ? dwarf::DW_EH_PE_sdata4 : dwarf::DW_EH_PE_sdata8);
296 } else {
297 PersonalityEncoding =
298 (CMModel == CodeModel::Small || CMModel == CodeModel::Medium)
299 ? dwarf::DW_EH_PE_udata4 : dwarf::DW_EH_PE_absptr;
300 LSDAEncoding = (CMModel == CodeModel::Small)
301 ? dwarf::DW_EH_PE_udata4 : dwarf::DW_EH_PE_absptr;
Evan Chengbbf3b0d2011-07-20 19:50:42 +0000[diff] [blame]302 TTypeEncoding = (CMModel == CodeModel::Small)
303 ? dwarf::DW_EH_PE_udata4 : dwarf::DW_EH_PE_absptr;
304 }
Joerg Sonnenberger7c442522014-04-30 23:23:14 +0000[diff] [blame]305 break;
306 case Triple::aarch64:
307 case Triple::aarch64_be:
Tim Northovere0e3aef2013-01-31 12:12:40 +0000[diff] [blame]308 // The small model guarantees static code/data size < 4GB, but not where it
309 // will be in memory. Most of these could end up >2GB away so even a signed
310 // pc-relative 32-bit address is insufficient, theoretically.
311 if (RelocM == Reloc::PIC_) {
312 PersonalityEncoding = dwarf::DW_EH_PE_indirect | dwarf::DW_EH_PE_pcrel |
313 dwarf::DW_EH_PE_sdata8;
314 LSDAEncoding = dwarf::DW_EH_PE_pcrel | dwarf::DW_EH_PE_sdata8;
Tim Northovere0e3aef2013-01-31 12:12:40 +0000[diff] [blame]315 TTypeEncoding = dwarf::DW_EH_PE_indirect | dwarf::DW_EH_PE_pcrel |
316 dwarf::DW_EH_PE_sdata8;
317 } else {
318 PersonalityEncoding = dwarf::DW_EH_PE_absptr;
319 LSDAEncoding = dwarf::DW_EH_PE_absptr;
Tim Northovere0e3aef2013-01-31 12:12:40 +0000[diff] [blame]320 TTypeEncoding = dwarf::DW_EH_PE_absptr;
321 }
Joerg Sonnenberger7c442522014-04-30 23:23:14 +0000[diff] [blame]322 break;
Logan Chienc0029812014-05-30 16:48:56 +0000[diff] [blame]323 case Triple::mips:
324 case Triple::mipsel:
Petar Jovanovic35f05742014-11-05 22:42:31 +0000[diff] [blame]325 case Triple::mips64:
326 case Triple::mips64el:
Logan Chienc0029812014-05-30 16:48:56 +0000[diff] [blame]327 // MIPS uses indirect pointer to refer personality functions, so that the
328 // eh_frame section can be read-only. DW.ref.personality will be generated
329 // for relocation.
330 PersonalityEncoding = dwarf::DW_EH_PE_indirect;
331 break;
Joerg Sonnenberger7c442522014-04-30 23:23:14 +0000[diff] [blame]332 case Triple::ppc64:
333 case Triple::ppc64le:
Adhemerval Zanella1ae22482013-01-09 17:08:15 +0000[diff] [blame]334 PersonalityEncoding = dwarf::DW_EH_PE_indirect | dwarf::DW_EH_PE_pcrel |
335 dwarf::DW_EH_PE_udata8;
Adhemerval Zanella1ae22482013-01-09 17:08:15 +0000[diff] [blame]336 LSDAEncoding = dwarf::DW_EH_PE_pcrel | dwarf::DW_EH_PE_udata8;
Adhemerval Zanella1ae22482013-01-09 17:08:15 +0000[diff] [blame]337 TTypeEncoding = dwarf::DW_EH_PE_indirect | dwarf::DW_EH_PE_pcrel |
338 dwarf::DW_EH_PE_udata8;
Joerg Sonnenberger7c442522014-04-30 23:23:14 +0000[diff] [blame]339 break;
340 case Triple::sparc:
Jakob Stoklund Olesen83c67732014-01-28 02:52:26 +0000[diff] [blame]341 if (RelocM == Reloc::PIC_) {
342 LSDAEncoding = dwarf::DW_EH_PE_pcrel | dwarf::DW_EH_PE_sdata4;
343 PersonalityEncoding = dwarf::DW_EH_PE_indirect | dwarf::DW_EH_PE_pcrel |
344 dwarf::DW_EH_PE_sdata4;
Jakob Stoklund Olesen83c67732014-01-28 02:52:26 +0000[diff] [blame]345 TTypeEncoding = dwarf::DW_EH_PE_indirect | dwarf::DW_EH_PE_pcrel |
346 dwarf::DW_EH_PE_sdata4;
347 } else {
348 LSDAEncoding = dwarf::DW_EH_PE_absptr;
349 PersonalityEncoding = dwarf::DW_EH_PE_absptr;
Jakob Stoklund Olesen83c67732014-01-28 02:52:26 +0000[diff] [blame]350 TTypeEncoding = dwarf::DW_EH_PE_absptr;
351 }
Joerg Sonnenbergerfa9cf652014-04-30 23:36:24 +0000[diff] [blame]352 break;
Joerg Sonnenberger7c442522014-04-30 23:23:14 +0000[diff] [blame]353 case Triple::sparcv9:
Jakob Stoklund Olesen83c67732014-01-28 02:52:26 +0000[diff] [blame]354 LSDAEncoding = dwarf::DW_EH_PE_pcrel | dwarf::DW_EH_PE_sdata4;
355 if (RelocM == Reloc::PIC_) {
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 PersonalityEncoding = dwarf::DW_EH_PE_absptr;
Jakob Stoklund Olesen83c67732014-01-28 02:52:26 +0000[diff] [blame]362 TTypeEncoding = dwarf::DW_EH_PE_absptr;
363 }
Joerg Sonnenbergerfa9cf652014-04-30 23:36:24 +0000[diff] [blame]364 break;
Joerg Sonnenberger7c442522014-04-30 23:23:14 +0000[diff] [blame]365 case Triple::systemz:
Ulrich Weigand0213e7f2013-05-06 16:11:12 +0000[diff] [blame]366 // All currently-defined code models guarantee that 4-byte PC-relative
367 // values will be in range.
Ulrich Weigande7c6dfe2013-05-06 17:28:30 +0000[diff] [blame]368 if (RelocM == Reloc::PIC_) {
369 PersonalityEncoding = dwarf::DW_EH_PE_indirect | dwarf::DW_EH_PE_pcrel |
370 dwarf::DW_EH_PE_sdata4;
371 LSDAEncoding = dwarf::DW_EH_PE_pcrel | dwarf::DW_EH_PE_sdata4;
Ulrich Weigande7c6dfe2013-05-06 17:28:30 +0000[diff] [blame]372 TTypeEncoding = dwarf::DW_EH_PE_indirect | dwarf::DW_EH_PE_pcrel |
373 dwarf::DW_EH_PE_sdata4;
374 } else {
375 PersonalityEncoding = dwarf::DW_EH_PE_absptr;
376 LSDAEncoding = dwarf::DW_EH_PE_absptr;
Ulrich Weigande7c6dfe2013-05-06 17:28:30 +0000[diff] [blame]377 TTypeEncoding = dwarf::DW_EH_PE_absptr;
378 }
Joerg Sonnenbergerfa9cf652014-04-30 23:36:24 +0000[diff] [blame]379 break;
Joerg Sonnenberger7c442522014-04-30 23:23:14 +0000[diff] [blame]380 default:
381 break;
Evan Chengbbf3b0d2011-07-20 19:50:42 +0000[diff] [blame]382 }
383
David Chisnall07f8d3e2012-02-17 17:31:15 +0000[diff] [blame]384 // Solaris requires different flags for .eh_frame to seemingly every other
385 // platform.
David Chisnallbbec8722012-04-10 11:44:33 +0000[diff] [blame]386 EHSectionType = ELF::SHT_PROGBITS;
David Chisnall07f8d3e2012-02-17 17:31:15 +0000[diff] [blame]387 EHSectionFlags = ELF::SHF_ALLOC;
Simon Pilgrima2794102014-11-22 19:12:10 +0000[diff] [blame]388 if (T.isOSSolaris()) {
David Chisnallbbec8722012-04-10 11:44:33 +0000[diff] [blame]389 if (T.getArch() == Triple::x86_64)
390 EHSectionType = ELF::SHT_X86_64_UNWIND;
391 else
392 EHSectionFlags |= ELF::SHF_WRITE;
393 }
David Chisnall07f8d3e2012-02-17 17:31:15 +0000[diff] [blame]394
395
Evan Cheng76792992011-07-20 05:58:47 +0000[diff] [blame]396 // ELF
Rafael Espindolaba31e272015-01-29 17:33:21 +0000[diff] [blame]397 BSSSection = Ctx->getELFSection(".bss", ELF::SHT_NOBITS,
398 ELF::SHF_WRITE | ELF::SHF_ALLOC);
Evan Cheng76792992011-07-20 05:58:47 +0000[diff] [blame]399
Rafael Espindolaba31e272015-01-29 17:33:21 +0000[diff] [blame]400 TextSection = Ctx->getELFSection(".text", ELF::SHT_PROGBITS,
401 ELF::SHF_EXECINSTR | ELF::SHF_ALLOC);
Evan Cheng76792992011-07-20 05:58:47 +0000[diff] [blame]402
Rafael Espindolaba31e272015-01-29 17:33:21 +0000[diff] [blame]403 DataSection = Ctx->getELFSection(".data", ELF::SHT_PROGBITS,
404 ELF::SHF_WRITE | ELF::SHF_ALLOC);
Evan Cheng76792992011-07-20 05:58:47 +0000[diff] [blame]405
406 ReadOnlySection =
Rafael Espindolaba31e272015-01-29 17:33:21 +0000[diff] [blame]407 Ctx->getELFSection(".rodata", ELF::SHT_PROGBITS, ELF::SHF_ALLOC);
Evan Cheng76792992011-07-20 05:58:47 +0000[diff] [blame]408
409 TLSDataSection =
Rafael Espindolaba31e272015-01-29 17:33:21 +0000[diff] [blame]410 Ctx->getELFSection(".tdata", ELF::SHT_PROGBITS,
411 ELF::SHF_ALLOC | ELF::SHF_TLS | ELF::SHF_WRITE);
Evan Cheng76792992011-07-20 05:58:47 +0000[diff] [blame]412
Rafael Espindolaba31e272015-01-29 17:33:21 +0000[diff] [blame]413 TLSBSSSection = Ctx->getELFSection(
414 ".tbss", ELF::SHT_NOBITS, ELF::SHF_ALLOC | ELF::SHF_TLS | ELF::SHF_WRITE);
Evan Cheng76792992011-07-20 05:58:47 +0000[diff] [blame]415
Rafael Espindolaba31e272015-01-29 17:33:21 +0000[diff] [blame]416 DataRelSection = Ctx->getELFSection(".data.rel", ELF::SHT_PROGBITS,
417 ELF::SHF_ALLOC | ELF::SHF_WRITE);
Evan Cheng76792992011-07-20 05:58:47 +0000[diff] [blame]418
Rafael Espindolaba31e272015-01-29 17:33:21 +0000[diff] [blame]419 DataRelLocalSection = Ctx->getELFSection(".data.rel.local", ELF::SHT_PROGBITS,
420 ELF::SHF_ALLOC | ELF::SHF_WRITE);
Evan Cheng76792992011-07-20 05:58:47 +0000[diff] [blame]421
Rafael Espindolaba31e272015-01-29 17:33:21 +0000[diff] [blame]422 DataRelROSection = Ctx->getELFSection(".data.rel.ro", ELF::SHT_PROGBITS,
423 ELF::SHF_ALLOC | ELF::SHF_WRITE);
Evan Cheng76792992011-07-20 05:58:47 +0000[diff] [blame]424
Rafael Espindolaba31e272015-01-29 17:33:21 +0000[diff] [blame]425 DataRelROLocalSection = Ctx->getELFSection(
426 ".data.rel.ro.local", ELF::SHT_PROGBITS, ELF::SHF_ALLOC | ELF::SHF_WRITE);
Evan Cheng76792992011-07-20 05:58:47 +0000[diff] [blame]427
428 MergeableConst4Section =
Rafael Espindolaba31e272015-01-29 17:33:21 +0000[diff] [blame]429 Ctx->getELFSection(".rodata.cst4", ELF::SHT_PROGBITS,
430 ELF::SHF_ALLOC | ELF::SHF_MERGE, 4, "");
Evan Cheng76792992011-07-20 05:58:47 +0000[diff] [blame]431
432 MergeableConst8Section =
Rafael Espindolaba31e272015-01-29 17:33:21 +0000[diff] [blame]433 Ctx->getELFSection(".rodata.cst8", ELF::SHT_PROGBITS,
434 ELF::SHF_ALLOC | ELF::SHF_MERGE, 8, "");
Evan Cheng76792992011-07-20 05:58:47 +0000[diff] [blame]435
436 MergeableConst16Section =
Rafael Espindolaba31e272015-01-29 17:33:21 +0000[diff] [blame]437 Ctx->getELFSection(".rodata.cst16", ELF::SHT_PROGBITS,
438 ELF::SHF_ALLOC | ELF::SHF_MERGE, 16, "");
Evan Cheng76792992011-07-20 05:58:47 +0000[diff] [blame]439
Rafael Espindolaba31e272015-01-29 17:33:21 +0000[diff] [blame]440 StaticCtorSection = Ctx->getELFSection(".ctors", ELF::SHT_PROGBITS,
441 ELF::SHF_ALLOC | ELF::SHF_WRITE);
Evan Cheng76792992011-07-20 05:58:47 +0000[diff] [blame]442
Rafael Espindolaba31e272015-01-29 17:33:21 +0000[diff] [blame]443 StaticDtorSection = Ctx->getELFSection(".dtors", ELF::SHT_PROGBITS,
444 ELF::SHF_ALLOC | ELF::SHF_WRITE);
Evan Cheng76792992011-07-20 05:58:47 +0000[diff] [blame]445
446 // Exception Handling Sections.
447
448 // FIXME: We're emitting LSDA info into a readonly section on ELF, even though
449 // it contains relocatable pointers. In PIC mode, this is probably a big
450 // runtime hit for C++ apps. Either the contents of the LSDA need to be
451 // adjusted or this should be a data section.
Rafael Espindolaba31e272015-01-29 17:33:21 +0000[diff] [blame]452 LSDASection = Ctx->getELFSection(".gcc_except_table", ELF::SHT_PROGBITS,
453 ELF::SHF_ALLOC);
Evan Cheng76792992011-07-20 05:58:47 +0000[diff] [blame]454
Craig Topperbb694de2014-04-13 04:57:38 +0000[diff] [blame]455 COFFDebugSymbolsSection = nullptr;
Timur Iskhodzhanovf166f6c2014-01-30 01:39:17 +0000[diff] [blame]456
Evan Cheng76792992011-07-20 05:58:47 +0000[diff] [blame]457 // Debug Info Sections.
Rafael Espindola6b9998b2015-03-10 22:00:25 +0000[diff] [blame]458 DwarfAbbrevSection = Ctx->getELFSection(".debug_abbrev", ELF::SHT_PROGBITS, 0,
459 "section_abbrev");
460 DwarfInfoSection =
461 Ctx->getELFSection(".debug_info", ELF::SHT_PROGBITS, 0, "section_info");
462 DwarfLineSection =
463 Ctx->getELFSection(".debug_line", ELF::SHT_PROGBITS, 0, "section_line");
Rafael Espindolaba31e272015-01-29 17:33:21 +0000[diff] [blame]464 DwarfFrameSection = Ctx->getELFSection(".debug_frame", ELF::SHT_PROGBITS, 0);
Krzysztof Parzyszek228daa62013-02-12 18:00:14 +0000[diff] [blame]465 DwarfPubNamesSection =
Rafael Espindolaba31e272015-01-29 17:33:21 +0000[diff] [blame]466 Ctx->getELFSection(".debug_pubnames", ELF::SHT_PROGBITS, 0);
Evan Cheng76792992011-07-20 05:58:47 +0000[diff] [blame]467 DwarfPubTypesSection =
Rafael Espindolaba31e272015-01-29 17:33:21 +0000[diff] [blame]468 Ctx->getELFSection(".debug_pubtypes", ELF::SHT_PROGBITS, 0);
Eric Christopherb0e76942013-09-09 20:03:14 +0000[diff] [blame]469 DwarfGnuPubNamesSection =
Rafael Espindolaba31e272015-01-29 17:33:21 +0000[diff] [blame]470 Ctx->getELFSection(".debug_gnu_pubnames", ELF::SHT_PROGBITS, 0);
Eric Christopherb0e76942013-09-09 20:03:14 +0000[diff] [blame]471 DwarfGnuPubTypesSection =
Rafael Espindolaba31e272015-01-29 17:33:21 +0000[diff] [blame]472 Ctx->getELFSection(".debug_gnu_pubtypes", ELF::SHT_PROGBITS, 0);
Rafael Espindola6b9998b2015-03-10 22:00:25 +0000[diff] [blame]473 DwarfStrSection = Ctx->getELFSection(".debug_str", ELF::SHT_PROGBITS,
474 ELF::SHF_MERGE | ELF::SHF_STRINGS, 1, "",
475 "info_string");
476 DwarfLocSection = Ctx->getELFSection(".debug_loc", ELF::SHT_PROGBITS, 0,
477 "section_debug_loc");
Evan Cheng76792992011-07-20 05:58:47 +0000[diff] [blame]478 DwarfARangesSection =
Rafael Espindolaba31e272015-01-29 17:33:21 +0000[diff] [blame]479 Ctx->getELFSection(".debug_aranges", ELF::SHT_PROGBITS, 0);
Evan Cheng76792992011-07-20 05:58:47 +0000[diff] [blame]480 DwarfRangesSection =
Rafael Espindola6b9998b2015-03-10 22:00:25 +0000[diff] [blame]481 Ctx->getELFSection(".debug_ranges", ELF::SHT_PROGBITS, 0, "debug_range");
Eric Christopher27ed8ec2012-11-28 02:49:34 +0000[diff] [blame]482
483 // DWARF5 Experimental Debug Info
484
485 // Accelerator Tables
Eric Christophera0ad67d2012-10-08 21:41:30 +0000[diff] [blame]486 DwarfAccelNamesSection =
Rafael Espindola6b9998b2015-03-10 22:00:25 +0000[diff] [blame]487 Ctx->getELFSection(".apple_names", ELF::SHT_PROGBITS, 0, "names_begin");
Eric Christophera0ad67d2012-10-08 21:41:30 +0000[diff] [blame]488 DwarfAccelObjCSection =
Rafael Espindola6b9998b2015-03-10 22:00:25 +0000[diff] [blame]489 Ctx->getELFSection(".apple_objc", ELF::SHT_PROGBITS, 0, "objc_begin");
490 DwarfAccelNamespaceSection = Ctx->getELFSection(
491 ".apple_namespaces", ELF::SHT_PROGBITS, 0, "namespac_begin");
Eric Christophera0ad67d2012-10-08 21:41:30 +0000[diff] [blame]492 DwarfAccelTypesSection =
Rafael Espindola6b9998b2015-03-10 22:00:25 +0000[diff] [blame]493 Ctx->getELFSection(".apple_types", ELF::SHT_PROGBITS, 0, "types_begin");
Eric Christopherc3b434b2012-11-28 02:49:38 +0000[diff] [blame]494
495 // Fission Sections
Rafael Espindola6b9998b2015-03-10 22:00:25 +0000[diff] [blame]496 DwarfInfoDWOSection = Ctx->getELFSection(".debug_info.dwo", ELF::SHT_PROGBITS,
497 0, "section_info_dwo");
498 DwarfTypesDWOSection = Ctx->getELFSection(
499 ".debug_types.dwo", ELF::SHT_PROGBITS, 0, "section_types_dwo");
500 DwarfAbbrevDWOSection = Ctx->getELFSection(
501 ".debug_abbrev.dwo", ELF::SHT_PROGBITS, 0, "section_abbrev_dwo");
502 DwarfStrDWOSection = Ctx->getELFSection(".debug_str.dwo", ELF::SHT_PROGBITS,
503 ELF::SHF_MERGE | ELF::SHF_STRINGS, 1,
504 "", "skel_string");
Eric Christopher3c230092012-11-30 06:47:06 +0000[diff] [blame]505 DwarfLineDWOSection =
Rafael Espindolaba31e272015-01-29 17:33:21 +0000[diff] [blame]506 Ctx->getELFSection(".debug_line.dwo", ELF::SHT_PROGBITS, 0);
Eric Christopher3c230092012-11-30 06:47:06 +0000[diff] [blame]507 DwarfLocDWOSection =
Rafael Espindola6b9998b2015-03-10 22:00:25 +0000[diff] [blame]508 Ctx->getELFSection(".debug_loc.dwo", ELF::SHT_PROGBITS, 0, "skel_loc");
Eric Christopherc0fa8672013-01-04 17:59:22 +0000[diff] [blame]509 DwarfStrOffDWOSection =
Rafael Espindolaba31e272015-01-29 17:33:21 +0000[diff] [blame]510 Ctx->getELFSection(".debug_str_offsets.dwo", ELF::SHT_PROGBITS, 0);
Rafael Espindola6b9998b2015-03-10 22:00:25 +0000[diff] [blame]511 DwarfAddrSection =
512 Ctx->getELFSection(".debug_addr", ELF::SHT_PROGBITS, 0, "addr_sec");
Philip Reames76846182014-08-01 18:47:09 +0000[diff] [blame]513
514 StackMapSection =
Rafael Espindolaba31e272015-01-29 17:33:21 +0000[diff] [blame]515 Ctx->getELFSection(".llvm_stackmaps", ELF::SHT_PROGBITS, ELF::SHF_ALLOC);
Evan Cheng76792992011-07-20 05:58:47 +0000[diff] [blame]516}
517
Evan Cheng76792992011-07-20 05:58:47 +0000[diff] [blame]518void MCObjectFileInfo::InitCOFFMCObjectFileInfo(Triple T) {
Saleem Abdulrasool70a02062014-06-08 03:57:49 +0000[diff] [blame]519 bool IsWoA = T.getArch() == Triple::arm || T.getArch() == Triple::thumb;
520
David Majnemer48227a32014-09-21 09:18:07 +0000[diff] [blame]521 CommDirectiveSupportsAlignment = true;
David Majnemera9bdb322014-04-08 22:33:40 +0000[diff] [blame]522
Evan Cheng76792992011-07-20 05:58:47 +0000[diff] [blame]523 // COFF
Rafael Espindola6ed58a22015-03-10 21:16:18 +0000[diff] [blame]524 BSSSection = Ctx->getCOFFSection(
525 ".bss", COFF::IMAGE_SCN_CNT_UNINITIALIZED_DATA |
526 COFF::IMAGE_SCN_MEM_READ | COFF::IMAGE_SCN_MEM_WRITE,
527 SectionKind::getBSS());
528 TextSection = Ctx->getCOFFSection(
529 ".text",
530 (IsWoA ? COFF::IMAGE_SCN_MEM_16BIT : (COFF::SectionCharacteristics)0) |
531 COFF::IMAGE_SCN_CNT_CODE | COFF::IMAGE_SCN_MEM_EXECUTE |
532 COFF::IMAGE_SCN_MEM_READ,
533 SectionKind::getText());
534 DataSection = Ctx->getCOFFSection(
535 ".data", COFF::IMAGE_SCN_CNT_INITIALIZED_DATA | COFF::IMAGE_SCN_MEM_READ |
536 COFF::IMAGE_SCN_MEM_WRITE,
537 SectionKind::getDataRel());
538 ReadOnlySection = Ctx->getCOFFSection(
539 ".rdata", COFF::IMAGE_SCN_CNT_INITIALIZED_DATA | COFF::IMAGE_SCN_MEM_READ,
540 SectionKind::getReadOnly());
Saleem Abdulrasoola35f04a2014-06-08 00:34:23 +0000[diff] [blame]541
Saleem Abdulrasooled7fc4b2014-06-08 00:34:27 +0000[diff] [blame]542 if (T.isKnownWindowsMSVCEnvironment() || T.isWindowsItaniumEnvironment()) {
Michael J. Spencerb560d072012-02-23 21:56:08 +0000[diff] [blame]543 StaticCtorSection =
Rafael Espindola6ed58a22015-03-10 21:16:18 +0000[diff] [blame]544 Ctx->getCOFFSection(".CRT$XCU", COFF::IMAGE_SCN_CNT_INITIALIZED_DATA |
545 COFF::IMAGE_SCN_MEM_READ,
546 SectionKind::getReadOnly());
Saleem Abdulrasoola35f04a2014-06-08 00:34:23 +0000[diff] [blame]547 StaticDtorSection =
Rafael Espindola6ed58a22015-03-10 21:16:18 +0000[diff] [blame]548 Ctx->getCOFFSection(".CRT$XTX", COFF::IMAGE_SCN_CNT_INITIALIZED_DATA |
549 COFF::IMAGE_SCN_MEM_READ,
550 SectionKind::getReadOnly());
Michael J. Spencerb560d072012-02-23 21:56:08 +0000[diff] [blame]551 } else {
Rafael Espindola6ed58a22015-03-10 21:16:18 +0000[diff] [blame]552 StaticCtorSection = Ctx->getCOFFSection(
553 ".ctors", COFF::IMAGE_SCN_CNT_INITIALIZED_DATA |
554 COFF::IMAGE_SCN_MEM_READ | COFF::IMAGE_SCN_MEM_WRITE,
555 SectionKind::getDataRel());
556 StaticDtorSection = Ctx->getCOFFSection(
557 ".dtors", COFF::IMAGE_SCN_CNT_INITIALIZED_DATA |
558 COFF::IMAGE_SCN_MEM_READ | COFF::IMAGE_SCN_MEM_WRITE,
559 SectionKind::getDataRel());
Anton Korobeynikov37d73002012-09-23 15:53:47 +0000[diff] [blame]560 }
Evan Cheng76792992011-07-20 05:58:47 +0000[diff] [blame]561
562 // FIXME: We're emitting LSDA info into a readonly section on COFF, even
563 // though it contains relocatable pointers. In PIC mode, this is probably a
564 // big runtime hit for C++ apps. Either the contents of the LSDA need to be
565 // adjusted or this should be a data section.
NAKAMURA Takumi1db59952014-06-25 12:41:52 +0000[diff] [blame]566 assert(T.isOSWindows() && "Windows is the only supported COFF target");
567 if (T.getArch() == Triple::x86_64) {
568 // On Windows 64 with SEH, the LSDA is emitted into the .xdata section
569 LSDASection = 0;
570 } else {
571 LSDASection = Ctx->getCOFFSection(".gcc_except_table",
572 COFF::IMAGE_SCN_CNT_INITIALIZED_DATA |
573 COFF::IMAGE_SCN_MEM_READ,
574 SectionKind::getReadOnly());
575 }
Evan Cheng76792992011-07-20 05:58:47 +0000[diff] [blame]576
577 // Debug info.
Timur Iskhodzhanov31377c52014-01-28 03:48:44 +0000[diff] [blame]578 COFFDebugSymbolsSection =
Rafael Espindola6ed58a22015-03-10 21:16:18 +0000[diff] [blame]579 Ctx->getCOFFSection(".debug$S", COFF::IMAGE_SCN_MEM_DISCARDABLE |
580 COFF::IMAGE_SCN_CNT_INITIALIZED_DATA |
581 COFF::IMAGE_SCN_MEM_READ,
582 SectionKind::getMetadata());
Timur Iskhodzhanov31377c52014-01-28 03:48:44 +0000[diff] [blame]583
Rafael Espindola6ed58a22015-03-10 21:16:18 +0000[diff] [blame]584 DwarfAbbrevSection = Ctx->getCOFFSection(
585 ".debug_abbrev",
586 COFF::IMAGE_SCN_MEM_DISCARDABLE | COFF::IMAGE_SCN_CNT_INITIALIZED_DATA |
587 COFF::IMAGE_SCN_MEM_READ,
Rafael Espindola6b9998b2015-03-10 22:00:25 +0000[diff] [blame]588 SectionKind::getMetadata(), "section_abbrev");
Rafael Espindola6ed58a22015-03-10 21:16:18 +0000[diff] [blame]589 DwarfInfoSection = Ctx->getCOFFSection(
590 ".debug_info",
591 COFF::IMAGE_SCN_MEM_DISCARDABLE | COFF::IMAGE_SCN_CNT_INITIALIZED_DATA |
592 COFF::IMAGE_SCN_MEM_READ,
Rafael Espindola6b9998b2015-03-10 22:00:25 +0000[diff] [blame]593 SectionKind::getMetadata(), "section_info");
Rafael Espindola6ed58a22015-03-10 21:16:18 +0000[diff] [blame]594 DwarfLineSection = Ctx->getCOFFSection(
595 ".debug_line",
596 COFF::IMAGE_SCN_MEM_DISCARDABLE | COFF::IMAGE_SCN_CNT_INITIALIZED_DATA |
597 COFF::IMAGE_SCN_MEM_READ,
Rafael Espindola6b9998b2015-03-10 22:00:25 +0000[diff] [blame]598 SectionKind::getMetadata(), "section_line");
599
Rafael Espindola6ed58a22015-03-10 21:16:18 +0000[diff] [blame]600 DwarfFrameSection = Ctx->getCOFFSection(
601 ".debug_frame",
602 COFF::IMAGE_SCN_MEM_DISCARDABLE | COFF::IMAGE_SCN_CNT_INITIALIZED_DATA |
603 COFF::IMAGE_SCN_MEM_READ,
604 SectionKind::getMetadata());
605 DwarfPubNamesSection = Ctx->getCOFFSection(
606 ".debug_pubnames",
607 COFF::IMAGE_SCN_MEM_DISCARDABLE | COFF::IMAGE_SCN_CNT_INITIALIZED_DATA |
608 COFF::IMAGE_SCN_MEM_READ,
609 SectionKind::getMetadata());
610 DwarfPubTypesSection = Ctx->getCOFFSection(
611 ".debug_pubtypes",
612 COFF::IMAGE_SCN_MEM_DISCARDABLE | COFF::IMAGE_SCN_CNT_INITIALIZED_DATA |
613 COFF::IMAGE_SCN_MEM_READ,
614 SectionKind::getMetadata());
615 DwarfGnuPubNamesSection = Ctx->getCOFFSection(
616 ".debug_gnu_pubnames",
617 COFF::IMAGE_SCN_MEM_DISCARDABLE | COFF::IMAGE_SCN_CNT_INITIALIZED_DATA |
618 COFF::IMAGE_SCN_MEM_READ,
619 SectionKind::getMetadata());
620 DwarfGnuPubTypesSection = Ctx->getCOFFSection(
621 ".debug_gnu_pubtypes",
622 COFF::IMAGE_SCN_MEM_DISCARDABLE | COFF::IMAGE_SCN_CNT_INITIALIZED_DATA |
623 COFF::IMAGE_SCN_MEM_READ,
624 SectionKind::getMetadata());
625 DwarfStrSection = Ctx->getCOFFSection(
626 ".debug_str",
627 COFF::IMAGE_SCN_MEM_DISCARDABLE | COFF::IMAGE_SCN_CNT_INITIALIZED_DATA |
628 COFF::IMAGE_SCN_MEM_READ,
Rafael Espindola6b9998b2015-03-10 22:00:25 +0000[diff] [blame]629 SectionKind::getMetadata(), "info_string");
Rafael Espindola6ed58a22015-03-10 21:16:18 +0000[diff] [blame]630 DwarfLocSection = Ctx->getCOFFSection(
631 ".debug_loc",
632 COFF::IMAGE_SCN_MEM_DISCARDABLE | COFF::IMAGE_SCN_CNT_INITIALIZED_DATA |
633 COFF::IMAGE_SCN_MEM_READ,
Rafael Espindola6b9998b2015-03-10 22:00:25 +0000[diff] [blame]634 SectionKind::getMetadata(), "section_debug_loc");
Rafael Espindola6ed58a22015-03-10 21:16:18 +0000[diff] [blame]635 DwarfARangesSection = Ctx->getCOFFSection(
636 ".debug_aranges",
637 COFF::IMAGE_SCN_MEM_DISCARDABLE | COFF::IMAGE_SCN_CNT_INITIALIZED_DATA |
638 COFF::IMAGE_SCN_MEM_READ,
639 SectionKind::getMetadata());
640 DwarfRangesSection = Ctx->getCOFFSection(
641 ".debug_ranges",
642 COFF::IMAGE_SCN_MEM_DISCARDABLE | COFF::IMAGE_SCN_CNT_INITIALIZED_DATA |
643 COFF::IMAGE_SCN_MEM_READ,
Rafael Espindola6b9998b2015-03-10 22:00:25 +0000[diff] [blame]644 SectionKind::getMetadata(), "debug_range");
Rafael Espindola6ed58a22015-03-10 21:16:18 +0000[diff] [blame]645 DwarfInfoDWOSection = Ctx->getCOFFSection(
646 ".debug_info.dwo",
647 COFF::IMAGE_SCN_MEM_DISCARDABLE | COFF::IMAGE_SCN_CNT_INITIALIZED_DATA |
648 COFF::IMAGE_SCN_MEM_READ,
Rafael Espindola6b9998b2015-03-10 22:00:25 +0000[diff] [blame]649 SectionKind::getMetadata(), "section_info_dwo");
Rafael Espindola6ed58a22015-03-10 21:16:18 +0000[diff] [blame]650 DwarfTypesDWOSection = Ctx->getCOFFSection(
651 ".debug_types.dwo",
652 COFF::IMAGE_SCN_MEM_DISCARDABLE | COFF::IMAGE_SCN_CNT_INITIALIZED_DATA |
653 COFF::IMAGE_SCN_MEM_READ,
Rafael Espindolab03bc792015-03-10 23:06:32 +0000[diff] [blame^]654 SectionKind::getMetadata(), "section_types_dwo");
Rafael Espindola6ed58a22015-03-10 21:16:18 +0000[diff] [blame]655 DwarfAbbrevDWOSection = Ctx->getCOFFSection(
656 ".debug_abbrev.dwo",
657 COFF::IMAGE_SCN_MEM_DISCARDABLE | COFF::IMAGE_SCN_CNT_INITIALIZED_DATA |
658 COFF::IMAGE_SCN_MEM_READ,
Rafael Espindola6b9998b2015-03-10 22:00:25 +0000[diff] [blame]659 SectionKind::getMetadata(), "section_abbrev_dwo");
Rafael Espindola6ed58a22015-03-10 21:16:18 +0000[diff] [blame]660 DwarfStrDWOSection = Ctx->getCOFFSection(
661 ".debug_str.dwo",
662 COFF::IMAGE_SCN_MEM_DISCARDABLE | COFF::IMAGE_SCN_CNT_INITIALIZED_DATA |
663 COFF::IMAGE_SCN_MEM_READ,
Rafael Espindola6b9998b2015-03-10 22:00:25 +0000[diff] [blame]664 SectionKind::getMetadata(), "skel_string");
Rafael Espindola6ed58a22015-03-10 21:16:18 +0000[diff] [blame]665 DwarfLineDWOSection = Ctx->getCOFFSection(
666 ".debug_line.dwo",
667 COFF::IMAGE_SCN_MEM_DISCARDABLE | COFF::IMAGE_SCN_CNT_INITIALIZED_DATA |
668 COFF::IMAGE_SCN_MEM_READ,
669 SectionKind::getMetadata());
670 DwarfLocDWOSection = Ctx->getCOFFSection(
671 ".debug_loc.dwo",
672 COFF::IMAGE_SCN_MEM_DISCARDABLE | COFF::IMAGE_SCN_CNT_INITIALIZED_DATA |
673 COFF::IMAGE_SCN_MEM_READ,
Rafael Espindola6b9998b2015-03-10 22:00:25 +0000[diff] [blame]674 SectionKind::getMetadata(), "skel_loc");
Rafael Espindola6ed58a22015-03-10 21:16:18 +0000[diff] [blame]675 DwarfStrOffDWOSection = Ctx->getCOFFSection(
676 ".debug_str_offsets.dwo",
677 COFF::IMAGE_SCN_MEM_DISCARDABLE | COFF::IMAGE_SCN_CNT_INITIALIZED_DATA |
678 COFF::IMAGE_SCN_MEM_READ,
679 SectionKind::getMetadata());
680 DwarfAddrSection = Ctx->getCOFFSection(
681 ".debug_addr",
682 COFF::IMAGE_SCN_MEM_DISCARDABLE | COFF::IMAGE_SCN_CNT_INITIALIZED_DATA |
683 COFF::IMAGE_SCN_MEM_READ,
Rafael Espindola6b9998b2015-03-10 22:00:25 +0000[diff] [blame]684 SectionKind::getMetadata(), "addr_sec");
Rafael Espindola6ed58a22015-03-10 21:16:18 +0000[diff] [blame]685 DwarfAccelNamesSection = Ctx->getCOFFSection(
686 ".apple_names",
687 COFF::IMAGE_SCN_MEM_DISCARDABLE | COFF::IMAGE_SCN_CNT_INITIALIZED_DATA |
688 COFF::IMAGE_SCN_MEM_READ,
Rafael Espindola6b9998b2015-03-10 22:00:25 +0000[diff] [blame]689 SectionKind::getMetadata(), "names_begin");
Rafael Espindola6ed58a22015-03-10 21:16:18 +0000[diff] [blame]690 DwarfAccelNamespaceSection = Ctx->getCOFFSection(
691 ".apple_namespaces",
692 COFF::IMAGE_SCN_MEM_DISCARDABLE | COFF::IMAGE_SCN_CNT_INITIALIZED_DATA |
693 COFF::IMAGE_SCN_MEM_READ,
Rafael Espindola6b9998b2015-03-10 22:00:25 +0000[diff] [blame]694 SectionKind::getMetadata(), "namespac_begin");
Rafael Espindola6ed58a22015-03-10 21:16:18 +0000[diff] [blame]695 DwarfAccelTypesSection = Ctx->getCOFFSection(
696 ".apple_types",
697 COFF::IMAGE_SCN_MEM_DISCARDABLE | COFF::IMAGE_SCN_CNT_INITIALIZED_DATA |
698 COFF::IMAGE_SCN_MEM_READ,
Rafael Espindola6b9998b2015-03-10 22:00:25 +0000[diff] [blame]699 SectionKind::getMetadata(), "types_begin");
Rafael Espindola6ed58a22015-03-10 21:16:18 +0000[diff] [blame]700 DwarfAccelObjCSection = Ctx->getCOFFSection(
701 ".apple_objc",
702 COFF::IMAGE_SCN_MEM_DISCARDABLE | COFF::IMAGE_SCN_CNT_INITIALIZED_DATA |
703 COFF::IMAGE_SCN_MEM_READ,
Rafael Espindola6b9998b2015-03-10 22:00:25 +0000[diff] [blame]704 SectionKind::getMetadata(), "objc_begin");
Frederic Riss3f1a0a72014-11-14 20:33:40 +0000[diff] [blame]705
Rafael Espindola6ed58a22015-03-10 21:16:18 +0000[diff] [blame]706 DrectveSection = Ctx->getCOFFSection(
707 ".drectve", COFF::IMAGE_SCN_LNK_INFO | COFF::IMAGE_SCN_LNK_REMOVE,
708 SectionKind::getMetadata());
Evan Cheng76792992011-07-20 05:58:47 +0000[diff] [blame]709
Rafael Espindola6ed58a22015-03-10 21:16:18 +0000[diff] [blame]710 PDataSection = Ctx->getCOFFSection(
711 ".pdata", COFF::IMAGE_SCN_CNT_INITIALIZED_DATA | COFF::IMAGE_SCN_MEM_READ,
712 SectionKind::getDataRel());
Evan Cheng76792992011-07-20 05:58:47 +0000[diff] [blame]713
Rafael Espindola6ed58a22015-03-10 21:16:18 +0000[diff] [blame]714 XDataSection = Ctx->getCOFFSection(
715 ".xdata", COFF::IMAGE_SCN_CNT_INITIALIZED_DATA | COFF::IMAGE_SCN_MEM_READ,
716 SectionKind::getDataRel());
Saleem Abdulrasoola35f04a2014-06-08 00:34:23 +0000[diff] [blame]717
Rafael Espindola6ed58a22015-03-10 21:16:18 +0000[diff] [blame]718 TLSDataSection = Ctx->getCOFFSection(
719 ".tls$", COFF::IMAGE_SCN_CNT_INITIALIZED_DATA | COFF::IMAGE_SCN_MEM_READ |
720 COFF::IMAGE_SCN_MEM_WRITE,
721 SectionKind::getDataRel());
Evan Cheng76792992011-07-20 05:58:47 +0000[diff] [blame]722}
723
Saleem Abdulrasoolbdbc0082014-06-22 22:25:01 +0000[diff] [blame]724void MCObjectFileInfo::InitMCObjectFileInfo(StringRef T, Reloc::Model relocm,
Evan Chengbbf3b0d2011-07-20 19:50:42 +0000[diff] [blame]725 CodeModel::Model cm,
Evan Cheng76792992011-07-20 05:58:47 +0000[diff] [blame]726 MCContext &ctx) {
727 RelocM = relocm;
Evan Chengbbf3b0d2011-07-20 19:50:42 +0000[diff] [blame]728 CMModel = cm;
Evan Cheng76792992011-07-20 05:58:47 +0000[diff] [blame]729 Ctx = &ctx;
730
731 // Common.
732 CommDirectiveSupportsAlignment = true;
733 SupportsWeakOmittedEHFrame = true;
Tim Northoverd1c6f512014-03-29 09:03:13 +0000[diff] [blame]734 SupportsCompactUnwindWithoutEHFrame = false;
Evan Chengbbf3b0d2011-07-20 19:50:42 +0000[diff] [blame]735
Rafael Espindolaaa7851d2014-05-12 13:47:05 +0000[diff] [blame]736 PersonalityEncoding = LSDAEncoding = FDECFIEncoding = TTypeEncoding =
737 dwarf::DW_EH_PE_absptr;
Evan Chengbbf3b0d2011-07-20 19:50:42 +0000[diff] [blame]738
Bill Wendling2d1df6b2013-04-10 21:42:06 +0000[diff] [blame]739 CompactUnwindDwarfEHFrameOnly = 0;
740
Craig Topperbb694de2014-04-13 04:57:38 +0000[diff] [blame]741 EHFrameSection = nullptr; // Created on demand.
742 CompactUnwindSection = nullptr; // Used only by selected targets.
743 DwarfAccelNamesSection = nullptr; // Used only by selected targets.
744 DwarfAccelObjCSection = nullptr; // Used only by selected targets.
745 DwarfAccelNamespaceSection = nullptr; // Used only by selected targets.
746 DwarfAccelTypesSection = nullptr; // Used only by selected targets.
Evan Cheng76792992011-07-20 05:58:47 +0000[diff] [blame]747
Saleem Abdulrasoolbdbc0082014-06-22 22:25:01 +0000[diff] [blame]748 TT = Triple(T);
749
750 Triple::ArchType Arch = TT.getArch();
Evan Cheng76792992011-07-20 05:58:47 +0000[diff] [blame]751 // FIXME: Checking for Arch here to filter out bogus triples such as
752 // cellspu-apple-darwin. Perhaps we should fix in Triple?
753 if ((Arch == Triple::x86 || Arch == Triple::x86_64 ||
754 Arch == Triple::arm || Arch == Triple::thumb ||
Tim Northovere19bed72014-07-23 12:32:47 +0000[diff] [blame]755 Arch == Triple::aarch64 ||
Evan Cheng76792992011-07-20 05:58:47 +0000[diff] [blame]756 Arch == Triple::ppc || Arch == Triple::ppc64 ||
757 Arch == Triple::UnknownArch) &&
Saleem Abdulrasoolbdbc0082014-06-22 22:25:01 +0000[diff] [blame]758 (TT.isOSDarwin() || TT.isOSBinFormatMachO())) {
Evan Cheng76792992011-07-20 05:58:47 +0000[diff] [blame]759 Env = IsMachO;
Saleem Abdulrasoolbdbc0082014-06-22 22:25:01 +0000[diff] [blame]760 InitMachOMCObjectFileInfo(TT);
Saleem Abdulrasoolffdb92a702014-04-27 04:54:16 +0000[diff] [blame]761 } else if ((Arch == Triple::x86 || Arch == Triple::x86_64 ||
762 Arch == Triple::arm || Arch == Triple::thumb) &&
Saleem Abdulrasoolbdbc0082014-06-22 22:25:01 +0000[diff] [blame]763 (TT.isOSWindows() && TT.getObjectFormat() == Triple::COFF)) {
Evan Cheng76792992011-07-20 05:58:47 +0000[diff] [blame]764 Env = IsCOFF;
Saleem Abdulrasoolbdbc0082014-06-22 22:25:01 +0000[diff] [blame]765 InitCOFFMCObjectFileInfo(TT);
Evan Cheng76792992011-07-20 05:58:47 +0000[diff] [blame]766 } else {
767 Env = IsELF;
Saleem Abdulrasoolbdbc0082014-06-22 22:25:01 +0000[diff] [blame]768 InitELFMCObjectFileInfo(TT);
Evan Cheng76792992011-07-20 05:58:47 +0000[diff] [blame]769 }
770}
771
David Blaikiebc563272013-12-13 21:33:40 +0000[diff] [blame]772const MCSection *MCObjectFileInfo::getDwarfTypesSection(uint64_t Hash) const {
773 return Ctx->getELFSection(".debug_types", ELF::SHT_PROGBITS, ELF::SHF_GROUP,
Rafael Espindolaba31e272015-01-29 17:33:21 +0000[diff] [blame]774 0, utostr(Hash));
David Blaikiebc563272013-12-13 21:33:40 +0000[diff] [blame]775}
776
David Chisnall85dd3092012-02-17 16:51:02 +0000[diff] [blame]777void MCObjectFileInfo::InitEHFrameSection() {
778 if (Env == IsMachO)
779 EHFrameSection =
780 Ctx->getMachOSection("__TEXT", "__eh_frame",
David Majnemer7b583052014-03-07 07:36:05 +0000[diff] [blame]781 MachO::S_COALESCED |
782 MachO::S_ATTR_NO_TOC |
783 MachO::S_ATTR_STRIP_STATIC_SYMS |
784 MachO::S_ATTR_LIVE_SUPPORT,
David Chisnall85dd3092012-02-17 16:51:02 +0000[diff] [blame]785 SectionKind::getReadOnly());
786 else if (Env == IsELF)
787 EHFrameSection =
Rafael Espindolaba31e272015-01-29 17:33:21 +0000[diff] [blame]788 Ctx->getELFSection(".eh_frame", EHSectionType, EHSectionFlags);
David Chisnall85dd3092012-02-17 16:51:02 +0000[diff] [blame]789 else
790 EHFrameSection =
791 Ctx->getCOFFSection(".eh_frame",
792 COFF::IMAGE_SCN_CNT_INITIALIZED_DATA |
793 COFF::IMAGE_SCN_MEM_READ |
794 COFF::IMAGE_SCN_MEM_WRITE,
795 SectionKind::getDataRel());
796}