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gerrit-public.fairphone.software / fp2-dev / platform / external / llvm / 4cbcee16187ab07a70280fc10af327767325b848 / . / lib / MC / MCObjectFileInfo.cpp
blob: 1a27df5dc0c0d5577ff2e26b25d8e3549bf32cac [file] [log] [blame]
Evan Chenge76a33b2011-07-20 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"
11#include "llvm/MC/MCContext.h"
12#include "llvm/MC/MCSection.h"
13#include "llvm/MC/MCSectionCOFF.h"
14#include "llvm/MC/MCSectionELF.h"
15#include "llvm/MC/MCSectionMachO.h"
16#include "llvm/ADT/Triple.h"
17using namespace llvm;
18
19void MCObjectFileInfo::InitMachOMCObjectFileInfo(Triple T) {
20 // MachO
21 IsFunctionEHFrameSymbolPrivate = false;
22 SupportsWeakOmittedEHFrame = false;
23
Evan Cheng203576a2011-07-20 19:50:42 +0000[diff] [blame]24 PersonalityEncoding = dwarf::DW_EH_PE_indirect | dwarf::DW_EH_PE_pcrel
25 | dwarf::DW_EH_PE_sdata4;
26 LSDAEncoding = FDEEncoding = FDECFIEncoding = dwarf::DW_EH_PE_pcrel;
27 TTypeEncoding = dwarf::DW_EH_PE_indirect | dwarf::DW_EH_PE_pcrel |
28 dwarf::DW_EH_PE_sdata4;
29
Evan Chenge76a33b2011-07-20 05:58:47 +0000[diff] [blame]30 // .comm doesn't support alignment before Leopard.
31 if (T.isMacOSX() && T.isMacOSXVersionLT(10, 5))
32 CommDirectiveSupportsAlignment = false;
33
34 TextSection // .text
35 = Ctx->getMachOSection("__TEXT", "__text",
36 MCSectionMachO::S_ATTR_PURE_INSTRUCTIONS,
37 SectionKind::getText());
38 DataSection // .data
39 = Ctx->getMachOSection("__DATA", "__data", 0,
40 SectionKind::getDataRel());
41
42 TLSDataSection // .tdata
43 = Ctx->getMachOSection("__DATA", "__thread_data",
44 MCSectionMachO::S_THREAD_LOCAL_REGULAR,
45 SectionKind::getDataRel());
46 TLSBSSSection // .tbss
47 = Ctx->getMachOSection("__DATA", "__thread_bss",
48 MCSectionMachO::S_THREAD_LOCAL_ZEROFILL,
49 SectionKind::getThreadBSS());
50
51 // TODO: Verify datarel below.
52 TLSTLVSection // .tlv
53 = Ctx->getMachOSection("__DATA", "__thread_vars",
54 MCSectionMachO::S_THREAD_LOCAL_VARIABLES,
55 SectionKind::getDataRel());
56
57 TLSThreadInitSection
58 = Ctx->getMachOSection("__DATA", "__thread_init",
Jim Grosbach946227d2011-11-15 16:46:22 +0000[diff] [blame]59 MCSectionMachO::S_THREAD_LOCAL_INIT_FUNCTION_POINTERS,
60 SectionKind::getDataRel());
Evan Chenge76a33b2011-07-20 05:58:47 +0000[diff] [blame]61
62 CStringSection // .cstring
63 = Ctx->getMachOSection("__TEXT", "__cstring",
64 MCSectionMachO::S_CSTRING_LITERALS,
65 SectionKind::getMergeable1ByteCString());
66 UStringSection
67 = Ctx->getMachOSection("__TEXT","__ustring", 0,
68 SectionKind::getMergeable2ByteCString());
69 FourByteConstantSection // .literal4
70 = Ctx->getMachOSection("__TEXT", "__literal4",
71 MCSectionMachO::S_4BYTE_LITERALS,
72 SectionKind::getMergeableConst4());
73 EightByteConstantSection // .literal8
74 = Ctx->getMachOSection("__TEXT", "__literal8",
75 MCSectionMachO::S_8BYTE_LITERALS,
76 SectionKind::getMergeableConst8());
77
78 // ld_classic doesn't support .literal16 in 32-bit mode, and ld64 falls back
79 // to using it in -static mode.
80 SixteenByteConstantSection = 0;
81 if (RelocM != Reloc::Static &&
82 T.getArch() != Triple::x86_64 && T.getArch() != Triple::ppc64)
83 SixteenByteConstantSection = // .literal16
84 Ctx->getMachOSection("__TEXT", "__literal16",
85 MCSectionMachO::S_16BYTE_LITERALS,
86 SectionKind::getMergeableConst16());
87
88 ReadOnlySection // .const
89 = Ctx->getMachOSection("__TEXT", "__const", 0,
90 SectionKind::getReadOnly());
91
92 TextCoalSection
93 = Ctx->getMachOSection("__TEXT", "__textcoal_nt",
94 MCSectionMachO::S_COALESCED |
95 MCSectionMachO::S_ATTR_PURE_INSTRUCTIONS,
96 SectionKind::getText());
97 ConstTextCoalSection
98 = Ctx->getMachOSection("__TEXT", "__const_coal",
99 MCSectionMachO::S_COALESCED,
100 SectionKind::getReadOnly());
101 ConstDataSection // .const_data
102 = Ctx->getMachOSection("__DATA", "__const", 0,
103 SectionKind::getReadOnlyWithRel());
104 DataCoalSection
105 = Ctx->getMachOSection("__DATA","__datacoal_nt",
106 MCSectionMachO::S_COALESCED,
107 SectionKind::getDataRel());
108 DataCommonSection
109 = Ctx->getMachOSection("__DATA","__common",
110 MCSectionMachO::S_ZEROFILL,
111 SectionKind::getBSS());
112 DataBSSSection
113 = Ctx->getMachOSection("__DATA","__bss", MCSectionMachO::S_ZEROFILL,
114 SectionKind::getBSS());
115
116
117 LazySymbolPointerSection
118 = Ctx->getMachOSection("__DATA", "__la_symbol_ptr",
119 MCSectionMachO::S_LAZY_SYMBOL_POINTERS,
120 SectionKind::getMetadata());
121 NonLazySymbolPointerSection
122 = Ctx->getMachOSection("__DATA", "__nl_symbol_ptr",
123 MCSectionMachO::S_NON_LAZY_SYMBOL_POINTERS,
124 SectionKind::getMetadata());
125
126 if (RelocM == Reloc::Static) {
127 StaticCtorSection
128 = Ctx->getMachOSection("__TEXT", "__constructor", 0,
129 SectionKind::getDataRel());
130 StaticDtorSection
131 = Ctx->getMachOSection("__TEXT", "__destructor", 0,
132 SectionKind::getDataRel());
133 } else {
134 StaticCtorSection
135 = Ctx->getMachOSection("__DATA", "__mod_init_func",
136 MCSectionMachO::S_MOD_INIT_FUNC_POINTERS,
137 SectionKind::getDataRel());
138 StaticDtorSection
139 = Ctx->getMachOSection("__DATA", "__mod_term_func",
140 MCSectionMachO::S_MOD_TERM_FUNC_POINTERS,
141 SectionKind::getDataRel());
142 }
143
144 // Exception Handling.
145 LSDASection = Ctx->getMachOSection("__TEXT", "__gcc_except_tab", 0,
146 SectionKind::getReadOnlyWithRel());
147
148 if (T.isMacOSX() && !T.isMacOSXVersionLT(10, 6))
149 CompactUnwindSection =
150 Ctx->getMachOSection("__LD", "__compact_unwind",
151 MCSectionMachO::S_ATTR_DEBUG,
152 SectionKind::getReadOnly());
153
154 // Debug Information.
Eric Christopher09ac3d82011-11-07 09:24:32 +0000[diff] [blame]155 DwarfAccelNamesSection =
156 Ctx->getMachOSection("__DWARF", "__apple_names",
157 MCSectionMachO::S_ATTR_DEBUG,
158 SectionKind::getMetadata());
159 DwarfAccelObjCSection =
160 Ctx->getMachOSection("__DWARF", "__apple_objc",
161 MCSectionMachO::S_ATTR_DEBUG,
162 SectionKind::getMetadata());
163 // 16 character section limit...
164 DwarfAccelNamespaceSection =
165 Ctx->getMachOSection("__DWARF", "__apple_namespac",
166 MCSectionMachO::S_ATTR_DEBUG,
167 SectionKind::getMetadata());
168 DwarfAccelTypesSection =
169 Ctx->getMachOSection("__DWARF", "__apple_types",
170 MCSectionMachO::S_ATTR_DEBUG,
171 SectionKind::getMetadata());
172
Evan Chenge76a33b2011-07-20 05:58:47 +0000[diff] [blame]173 DwarfAbbrevSection =
174 Ctx->getMachOSection("__DWARF", "__debug_abbrev",
175 MCSectionMachO::S_ATTR_DEBUG,
176 SectionKind::getMetadata());
177 DwarfInfoSection =
178 Ctx->getMachOSection("__DWARF", "__debug_info",
179 MCSectionMachO::S_ATTR_DEBUG,
180 SectionKind::getMetadata());
181 DwarfLineSection =
182 Ctx->getMachOSection("__DWARF", "__debug_line",
183 MCSectionMachO::S_ATTR_DEBUG,
184 SectionKind::getMetadata());
185 DwarfFrameSection =
186 Ctx->getMachOSection("__DWARF", "__debug_frame",
187 MCSectionMachO::S_ATTR_DEBUG,
188 SectionKind::getMetadata());
Evan Chenge76a33b2011-07-20 05:58:47 +0000[diff] [blame]189 DwarfPubTypesSection =
190 Ctx->getMachOSection("__DWARF", "__debug_pubtypes",
191 MCSectionMachO::S_ATTR_DEBUG,
192 SectionKind::getMetadata());
193 DwarfStrSection =
194 Ctx->getMachOSection("__DWARF", "__debug_str",
195 MCSectionMachO::S_ATTR_DEBUG,
196 SectionKind::getMetadata());
197 DwarfLocSection =
198 Ctx->getMachOSection("__DWARF", "__debug_loc",
199 MCSectionMachO::S_ATTR_DEBUG,
200 SectionKind::getMetadata());
201 DwarfARangesSection =
202 Ctx->getMachOSection("__DWARF", "__debug_aranges",
203 MCSectionMachO::S_ATTR_DEBUG,
204 SectionKind::getMetadata());
205 DwarfRangesSection =
206 Ctx->getMachOSection("__DWARF", "__debug_ranges",
207 MCSectionMachO::S_ATTR_DEBUG,
208 SectionKind::getMetadata());
209 DwarfMacroInfoSection =
210 Ctx->getMachOSection("__DWARF", "__debug_macinfo",
211 MCSectionMachO::S_ATTR_DEBUG,
212 SectionKind::getMetadata());
213 DwarfDebugInlineSection =
214 Ctx->getMachOSection("__DWARF", "__debug_inlined",
215 MCSectionMachO::S_ATTR_DEBUG,
216 SectionKind::getMetadata());
217
218 TLSExtraDataSection = TLSTLVSection;
219}
220
221void MCObjectFileInfo::InitELFMCObjectFileInfo(Triple T) {
Evan Cheng203576a2011-07-20 19:50:42 +0000[diff] [blame]222 if (T.getArch() == Triple::x86) {
223 PersonalityEncoding = (RelocM == Reloc::PIC_)
Jim Grosbach946227d2011-11-15 16:46:22 +0000[diff] [blame]224 ? dwarf::DW_EH_PE_indirect | dwarf::DW_EH_PE_pcrel | dwarf::DW_EH_PE_sdata4
225 : dwarf::DW_EH_PE_absptr;
Evan Cheng203576a2011-07-20 19:50:42 +0000[diff] [blame]226 LSDAEncoding = (RelocM == Reloc::PIC_)
227 ? dwarf::DW_EH_PE_pcrel | dwarf::DW_EH_PE_sdata4
228 : dwarf::DW_EH_PE_absptr;
229 FDEEncoding = FDECFIEncoding = (RelocM == Reloc::PIC_)
230 ? dwarf::DW_EH_PE_pcrel | dwarf::DW_EH_PE_sdata4
231 : dwarf::DW_EH_PE_absptr;
232 TTypeEncoding = (RelocM == Reloc::PIC_)
Jim Grosbach946227d2011-11-15 16:46:22 +0000[diff] [blame]233 ? dwarf::DW_EH_PE_indirect | dwarf::DW_EH_PE_pcrel | dwarf::DW_EH_PE_sdata4
234 : dwarf::DW_EH_PE_absptr;
Evan Cheng203576a2011-07-20 19:50:42 +0000[diff] [blame]235 } else if (T.getArch() == Triple::x86_64) {
236 FDECFIEncoding = dwarf::DW_EH_PE_pcrel | dwarf::DW_EH_PE_sdata4;
237
238 if (RelocM == Reloc::PIC_) {
239 PersonalityEncoding = dwarf::DW_EH_PE_indirect | dwarf::DW_EH_PE_pcrel |
240 ((CMModel == CodeModel::Small || CMModel == CodeModel::Medium)
241 ? dwarf::DW_EH_PE_sdata4 : dwarf::DW_EH_PE_sdata8);
242 LSDAEncoding = dwarf::DW_EH_PE_pcrel |
243 (CMModel == CodeModel::Small
244 ? dwarf::DW_EH_PE_sdata4 : dwarf::DW_EH_PE_sdata8);
245 FDEEncoding = dwarf::DW_EH_PE_pcrel | dwarf::DW_EH_PE_sdata4;
246 TTypeEncoding = dwarf::DW_EH_PE_indirect | dwarf::DW_EH_PE_pcrel |
247 ((CMModel == CodeModel::Small || CMModel == CodeModel::Medium)
248 ? dwarf::DW_EH_PE_sdata4 : dwarf::DW_EH_PE_sdata8);
249 } else {
250 PersonalityEncoding =
251 (CMModel == CodeModel::Small || CMModel == CodeModel::Medium)
252 ? dwarf::DW_EH_PE_udata4 : dwarf::DW_EH_PE_absptr;
253 LSDAEncoding = (CMModel == CodeModel::Small)
254 ? dwarf::DW_EH_PE_udata4 : dwarf::DW_EH_PE_absptr;
255 FDEEncoding = dwarf::DW_EH_PE_udata4;
256 TTypeEncoding = (CMModel == CodeModel::Small)
257 ? dwarf::DW_EH_PE_udata4 : dwarf::DW_EH_PE_absptr;
258 }
259 }
260
David Chisnall4cbcee12012-02-17 17:31:15 +0000[diff] [blame^]261 // Solaris requires different flags for .eh_frame to seemingly every other
262 // platform.
263 EHSectionFlags = ELF::SHF_ALLOC;
264 if (T.getOS() == Triple::Solaris)
265 EHSectionFlags |= ELF::SHF_WRITE;
266
267
Evan Chenge76a33b2011-07-20 05:58:47 +0000[diff] [blame]268 // ELF
269 BSSSection =
270 Ctx->getELFSection(".bss", ELF::SHT_NOBITS,
Anton Korobeynikov4a99f592012-01-25 22:24:19 +0000[diff] [blame]271 ELF::SHF_WRITE | ELF::SHF_ALLOC,
Evan Chenge76a33b2011-07-20 05:58:47 +0000[diff] [blame]272 SectionKind::getBSS());
273
274 TextSection =
275 Ctx->getELFSection(".text", ELF::SHT_PROGBITS,
276 ELF::SHF_EXECINSTR |
277 ELF::SHF_ALLOC,
278 SectionKind::getText());
279
280 DataSection =
281 Ctx->getELFSection(".data", ELF::SHT_PROGBITS,
282 ELF::SHF_WRITE |ELF::SHF_ALLOC,
283 SectionKind::getDataRel());
284
285 ReadOnlySection =
286 Ctx->getELFSection(".rodata", ELF::SHT_PROGBITS,
287 ELF::SHF_ALLOC,
288 SectionKind::getReadOnly());
289
290 TLSDataSection =
291 Ctx->getELFSection(".tdata", ELF::SHT_PROGBITS,
292 ELF::SHF_ALLOC | ELF::SHF_TLS |
293 ELF::SHF_WRITE,
294 SectionKind::getThreadData());
295
296 TLSBSSSection =
297 Ctx->getELFSection(".tbss", ELF::SHT_NOBITS,
298 ELF::SHF_ALLOC | ELF::SHF_TLS |
299 ELF::SHF_WRITE,
300 SectionKind::getThreadBSS());
301
302 DataRelSection =
303 Ctx->getELFSection(".data.rel", ELF::SHT_PROGBITS,
304 ELF::SHF_ALLOC |ELF::SHF_WRITE,
305 SectionKind::getDataRel());
306
307 DataRelLocalSection =
308 Ctx->getELFSection(".data.rel.local", ELF::SHT_PROGBITS,
309 ELF::SHF_ALLOC |ELF::SHF_WRITE,
310 SectionKind::getDataRelLocal());
311
312 DataRelROSection =
313 Ctx->getELFSection(".data.rel.ro", ELF::SHT_PROGBITS,
314 ELF::SHF_ALLOC |ELF::SHF_WRITE,
315 SectionKind::getReadOnlyWithRel());
316
317 DataRelROLocalSection =
318 Ctx->getELFSection(".data.rel.ro.local", ELF::SHT_PROGBITS,
319 ELF::SHF_ALLOC |ELF::SHF_WRITE,
320 SectionKind::getReadOnlyWithRelLocal());
321
322 MergeableConst4Section =
323 Ctx->getELFSection(".rodata.cst4", ELF::SHT_PROGBITS,
324 ELF::SHF_ALLOC |ELF::SHF_MERGE,
325 SectionKind::getMergeableConst4());
326
327 MergeableConst8Section =
328 Ctx->getELFSection(".rodata.cst8", ELF::SHT_PROGBITS,
329 ELF::SHF_ALLOC |ELF::SHF_MERGE,
330 SectionKind::getMergeableConst8());
331
332 MergeableConst16Section =
333 Ctx->getELFSection(".rodata.cst16", ELF::SHT_PROGBITS,
334 ELF::SHF_ALLOC |ELF::SHF_MERGE,
335 SectionKind::getMergeableConst16());
336
337 StaticCtorSection =
338 Ctx->getELFSection(".ctors", ELF::SHT_PROGBITS,
339 ELF::SHF_ALLOC |ELF::SHF_WRITE,
340 SectionKind::getDataRel());
341
342 StaticDtorSection =
343 Ctx->getELFSection(".dtors", ELF::SHT_PROGBITS,
344 ELF::SHF_ALLOC |ELF::SHF_WRITE,
345 SectionKind::getDataRel());
346
347 // Exception Handling Sections.
348
349 // FIXME: We're emitting LSDA info into a readonly section on ELF, even though
350 // it contains relocatable pointers. In PIC mode, this is probably a big
351 // runtime hit for C++ apps. Either the contents of the LSDA need to be
352 // adjusted or this should be a data section.
353 LSDASection =
354 Ctx->getELFSection(".gcc_except_table", ELF::SHT_PROGBITS,
355 ELF::SHF_ALLOC,
356 SectionKind::getReadOnly());
357
358 // Debug Info Sections.
359 DwarfAbbrevSection =
360 Ctx->getELFSection(".debug_abbrev", ELF::SHT_PROGBITS, 0,
361 SectionKind::getMetadata());
362 DwarfInfoSection =
363 Ctx->getELFSection(".debug_info", ELF::SHT_PROGBITS, 0,
364 SectionKind::getMetadata());
365 DwarfLineSection =
366 Ctx->getELFSection(".debug_line", ELF::SHT_PROGBITS, 0,
367 SectionKind::getMetadata());
368 DwarfFrameSection =
369 Ctx->getELFSection(".debug_frame", ELF::SHT_PROGBITS, 0,
370 SectionKind::getMetadata());
Evan Chenge76a33b2011-07-20 05:58:47 +0000[diff] [blame]371 DwarfPubTypesSection =
372 Ctx->getELFSection(".debug_pubtypes", ELF::SHT_PROGBITS, 0,
373 SectionKind::getMetadata());
374 DwarfStrSection =
Nick Lewycky5a86c5b2011-10-26 18:44:32 +0000[diff] [blame]375 Ctx->getELFSection(".debug_str", ELF::SHT_PROGBITS,
376 ELF::SHF_MERGE | ELF::SHF_STRINGS,
377 SectionKind::getMergeable1ByteCString());
Evan Chenge76a33b2011-07-20 05:58:47 +0000[diff] [blame]378 DwarfLocSection =
379 Ctx->getELFSection(".debug_loc", ELF::SHT_PROGBITS, 0,
380 SectionKind::getMetadata());
381 DwarfARangesSection =
382 Ctx->getELFSection(".debug_aranges", ELF::SHT_PROGBITS, 0,
383 SectionKind::getMetadata());
384 DwarfRangesSection =
385 Ctx->getELFSection(".debug_ranges", ELF::SHT_PROGBITS, 0,
386 SectionKind::getMetadata());
387 DwarfMacroInfoSection =
388 Ctx->getELFSection(".debug_macinfo", ELF::SHT_PROGBITS, 0,
389 SectionKind::getMetadata());
390}
391
392
393void MCObjectFileInfo::InitCOFFMCObjectFileInfo(Triple T) {
394 // COFF
395 TextSection =
396 Ctx->getCOFFSection(".text",
397 COFF::IMAGE_SCN_CNT_CODE |
398 COFF::IMAGE_SCN_MEM_EXECUTE |
399 COFF::IMAGE_SCN_MEM_READ,
400 SectionKind::getText());
401 DataSection =
402 Ctx->getCOFFSection(".data",
403 COFF::IMAGE_SCN_CNT_INITIALIZED_DATA |
404 COFF::IMAGE_SCN_MEM_READ |
405 COFF::IMAGE_SCN_MEM_WRITE,
406 SectionKind::getDataRel());
407 ReadOnlySection =
408 Ctx->getCOFFSection(".rdata",
409 COFF::IMAGE_SCN_CNT_INITIALIZED_DATA |
410 COFF::IMAGE_SCN_MEM_READ,
411 SectionKind::getReadOnly());
412 StaticCtorSection =
413 Ctx->getCOFFSection(".ctors",
414 COFF::IMAGE_SCN_CNT_INITIALIZED_DATA |
415 COFF::IMAGE_SCN_MEM_READ |
416 COFF::IMAGE_SCN_MEM_WRITE,
417 SectionKind::getDataRel());
418 StaticDtorSection =
419 Ctx->getCOFFSection(".dtors",
420 COFF::IMAGE_SCN_CNT_INITIALIZED_DATA |
421 COFF::IMAGE_SCN_MEM_READ |
422 COFF::IMAGE_SCN_MEM_WRITE,
423 SectionKind::getDataRel());
424
425 // FIXME: We're emitting LSDA info into a readonly section on COFF, even
426 // though it contains relocatable pointers. In PIC mode, this is probably a
427 // big runtime hit for C++ apps. Either the contents of the LSDA need to be
428 // adjusted or this should be a data section.
429 LSDASection =
430 Ctx->getCOFFSection(".gcc_except_table",
431 COFF::IMAGE_SCN_CNT_INITIALIZED_DATA |
432 COFF::IMAGE_SCN_MEM_READ,
433 SectionKind::getReadOnly());
434
435 // Debug info.
436 DwarfAbbrevSection =
437 Ctx->getCOFFSection(".debug_abbrev",
438 COFF::IMAGE_SCN_MEM_DISCARDABLE |
439 COFF::IMAGE_SCN_MEM_READ,
440 SectionKind::getMetadata());
441 DwarfInfoSection =
442 Ctx->getCOFFSection(".debug_info",
443 COFF::IMAGE_SCN_MEM_DISCARDABLE |
444 COFF::IMAGE_SCN_MEM_READ,
445 SectionKind::getMetadata());
446 DwarfLineSection =
447 Ctx->getCOFFSection(".debug_line",
448 COFF::IMAGE_SCN_MEM_DISCARDABLE |
449 COFF::IMAGE_SCN_MEM_READ,
450 SectionKind::getMetadata());
451 DwarfFrameSection =
452 Ctx->getCOFFSection(".debug_frame",
453 COFF::IMAGE_SCN_MEM_DISCARDABLE |
454 COFF::IMAGE_SCN_MEM_READ,
455 SectionKind::getMetadata());
Evan Chenge76a33b2011-07-20 05:58:47 +0000[diff] [blame]456 DwarfPubTypesSection =
457 Ctx->getCOFFSection(".debug_pubtypes",
458 COFF::IMAGE_SCN_MEM_DISCARDABLE |
459 COFF::IMAGE_SCN_MEM_READ,
460 SectionKind::getMetadata());
461 DwarfStrSection =
462 Ctx->getCOFFSection(".debug_str",
463 COFF::IMAGE_SCN_MEM_DISCARDABLE |
464 COFF::IMAGE_SCN_MEM_READ,
465 SectionKind::getMetadata());
466 DwarfLocSection =
467 Ctx->getCOFFSection(".debug_loc",
468 COFF::IMAGE_SCN_MEM_DISCARDABLE |
469 COFF::IMAGE_SCN_MEM_READ,
470 SectionKind::getMetadata());
471 DwarfARangesSection =
472 Ctx->getCOFFSection(".debug_aranges",
473 COFF::IMAGE_SCN_MEM_DISCARDABLE |
474 COFF::IMAGE_SCN_MEM_READ,
475 SectionKind::getMetadata());
476 DwarfRangesSection =
477 Ctx->getCOFFSection(".debug_ranges",
478 COFF::IMAGE_SCN_MEM_DISCARDABLE |
479 COFF::IMAGE_SCN_MEM_READ,
480 SectionKind::getMetadata());
481 DwarfMacroInfoSection =
482 Ctx->getCOFFSection(".debug_macinfo",
483 COFF::IMAGE_SCN_MEM_DISCARDABLE |
484 COFF::IMAGE_SCN_MEM_READ,
485 SectionKind::getMetadata());
486
487 DrectveSection =
488 Ctx->getCOFFSection(".drectve",
489 COFF::IMAGE_SCN_LNK_INFO,
490 SectionKind::getMetadata());
491
492 PDataSection =
493 Ctx->getCOFFSection(".pdata",
494 COFF::IMAGE_SCN_CNT_INITIALIZED_DATA |
495 COFF::IMAGE_SCN_MEM_READ |
496 COFF::IMAGE_SCN_MEM_WRITE,
497 SectionKind::getDataRel());
498
499 XDataSection =
500 Ctx->getCOFFSection(".xdata",
501 COFF::IMAGE_SCN_CNT_INITIALIZED_DATA |
502 COFF::IMAGE_SCN_MEM_READ |
503 COFF::IMAGE_SCN_MEM_WRITE,
504 SectionKind::getDataRel());
Anton Korobeynikovd4a19b62012-02-11 17:26:53 +0000[diff] [blame]505 TLSDataSection =
506 Ctx->getCOFFSection(".tls$",
507 COFF::IMAGE_SCN_CNT_INITIALIZED_DATA |
508 COFF::IMAGE_SCN_MEM_READ |
509 COFF::IMAGE_SCN_MEM_WRITE,
510 SectionKind::getDataRel());
Evan Chenge76a33b2011-07-20 05:58:47 +0000[diff] [blame]511}
512
513void MCObjectFileInfo::InitMCObjectFileInfo(StringRef TT, Reloc::Model relocm,
Evan Cheng203576a2011-07-20 19:50:42 +0000[diff] [blame]514 CodeModel::Model cm,
Evan Chenge76a33b2011-07-20 05:58:47 +0000[diff] [blame]515 MCContext &ctx) {
516 RelocM = relocm;
Evan Cheng203576a2011-07-20 19:50:42 +0000[diff] [blame]517 CMModel = cm;
Evan Chenge76a33b2011-07-20 05:58:47 +0000[diff] [blame]518 Ctx = &ctx;
519
520 // Common.
521 CommDirectiveSupportsAlignment = true;
522 SupportsWeakOmittedEHFrame = true;
523 IsFunctionEHFrameSymbolPrivate = true;
Evan Cheng203576a2011-07-20 19:50:42 +0000[diff] [blame]524
525 PersonalityEncoding = LSDAEncoding = FDEEncoding = FDECFIEncoding =
526 TTypeEncoding = dwarf::DW_EH_PE_absptr;
527
Eric Christopher09ac3d82011-11-07 09:24:32 +0000[diff] [blame]528 EHFrameSection = 0; // Created on demand.
529 CompactUnwindSection = 0; // Used only by selected targets.
530 DwarfAccelNamesSection = 0; // Used only by selected targets.
531 DwarfAccelObjCSection = 0; // Used only by selected targets.
532 DwarfAccelNamespaceSection = 0; // Used only by selected targets.
533 DwarfAccelTypesSection = 0; // Used only by selected targets.
Evan Chenge76a33b2011-07-20 05:58:47 +0000[diff] [blame]534
535 Triple T(TT);
536 Triple::ArchType Arch = T.getArch();
537 // FIXME: Checking for Arch here to filter out bogus triples such as
538 // cellspu-apple-darwin. Perhaps we should fix in Triple?
539 if ((Arch == Triple::x86 || Arch == Triple::x86_64 ||
540 Arch == Triple::arm || Arch == Triple::thumb ||
541 Arch == Triple::ppc || Arch == Triple::ppc64 ||
542 Arch == Triple::UnknownArch) &&
543 (T.isOSDarwin() || T.getEnvironment() == Triple::MachO)) {
544 Env = IsMachO;
545 InitMachOMCObjectFileInfo(T);
Evan Cheng36c62d32011-07-20 23:53:54 +0000[diff] [blame]546 } else if ((Arch == Triple::x86 || Arch == Triple::x86_64) &&
547 (T.getOS() == Triple::MinGW32 || T.getOS() == Triple::Cygwin ||
548 T.getOS() == Triple::Win32)) {
Evan Chenge76a33b2011-07-20 05:58:47 +0000[diff] [blame]549 Env = IsCOFF;
550 InitCOFFMCObjectFileInfo(T);
551 } else {
552 Env = IsELF;
553 InitELFMCObjectFileInfo(T);
554 }
555}
556
David Chisnall8bb51ef2012-02-17 16:51:02 +0000[diff] [blame]557void MCObjectFileInfo::InitEHFrameSection() {
558 if (Env == IsMachO)
559 EHFrameSection =
560 Ctx->getMachOSection("__TEXT", "__eh_frame",
561 MCSectionMachO::S_COALESCED |
562 MCSectionMachO::S_ATTR_NO_TOC |
563 MCSectionMachO::S_ATTR_STRIP_STATIC_SYMS |
564 MCSectionMachO::S_ATTR_LIVE_SUPPORT,
565 SectionKind::getReadOnly());
566 else if (Env == IsELF)
567 EHFrameSection =
568 Ctx->getELFSection(".eh_frame", ELF::SHT_PROGBITS,
David Chisnall4cbcee12012-02-17 17:31:15 +0000[diff] [blame^]569 EHSectionFlags,
David Chisnall8bb51ef2012-02-17 16:51:02 +0000[diff] [blame]570 SectionKind::getDataRel());
571 else
572 EHFrameSection =
573 Ctx->getCOFFSection(".eh_frame",
574 COFF::IMAGE_SCN_CNT_INITIALIZED_DATA |
575 COFF::IMAGE_SCN_MEM_READ |
576 COFF::IMAGE_SCN_MEM_WRITE,
577 SectionKind::getDataRel());
578}