LLVM  16.0.0git
DarwinAsmParser.cpp
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1 //===- DarwinAsmParser.cpp - Darwin (Mach-O) Assembly Parser --------------===//
2 //
3 // Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
4 // See https://llvm.org/LICENSE.txt for license information.
5 // SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
6 //
7 //===----------------------------------------------------------------------===//
8 
9 #include "llvm/ADT/SmallVector.h"
10 #include "llvm/ADT/StringRef.h"
11 #include "llvm/ADT/StringSwitch.h"
12 #include "llvm/ADT/Triple.h"
13 #include "llvm/ADT/Twine.h"
15 #include "llvm/MC/MCContext.h"
16 #include "llvm/MC/MCDirectives.h"
20 #include "llvm/MC/MCSectionMachO.h"
21 #include "llvm/MC/MCStreamer.h"
22 #include "llvm/MC/MCSymbol.h"
23 #include "llvm/MC/SectionKind.h"
24 #include "llvm/Support/Error.h"
27 #include "llvm/Support/SMLoc.h"
28 #include "llvm/Support/SourceMgr.h"
30 #include <cstddef>
31 #include <cstdint>
32 #include <string>
33 #include <system_error>
34 #include <utility>
35 
36 using namespace llvm;
37 
38 namespace {
39 
40 /// Implementation of directive handling which is shared across all
41 /// Darwin targets.
42 class DarwinAsmParser : public MCAsmParserExtension {
43  template<bool (DarwinAsmParser::*HandlerMethod)(StringRef, SMLoc)>
44  void addDirectiveHandler(StringRef Directive) {
45  MCAsmParser::ExtensionDirectiveHandler Handler = std::make_pair(
46  this, HandleDirective<DarwinAsmParser, HandlerMethod>);
47  getParser().addDirectiveHandler(Directive, Handler);
48  }
49 
50  bool parseSectionSwitch(StringRef Segment, StringRef Section,
51  unsigned TAA = 0, unsigned ImplicitAlign = 0,
52  unsigned StubSize = 0);
53 
54  SMLoc LastVersionDirective;
55 
56 public:
57  DarwinAsmParser() = default;
58 
59  void Initialize(MCAsmParser &Parser) override {
60  // Call the base implementation.
62 
63  addDirectiveHandler<&DarwinAsmParser::parseDirectiveAltEntry>(".alt_entry");
64  addDirectiveHandler<&DarwinAsmParser::parseDirectiveDesc>(".desc");
65  addDirectiveHandler<&DarwinAsmParser::parseDirectiveIndirectSymbol>(
66  ".indirect_symbol");
67  addDirectiveHandler<&DarwinAsmParser::parseDirectiveLsym>(".lsym");
68  addDirectiveHandler<&DarwinAsmParser::parseDirectiveSubsectionsViaSymbols>(
69  ".subsections_via_symbols");
70  addDirectiveHandler<&DarwinAsmParser::parseDirectiveDumpOrLoad>(".dump");
71  addDirectiveHandler<&DarwinAsmParser::parseDirectiveDumpOrLoad>(".load");
72  addDirectiveHandler<&DarwinAsmParser::parseDirectiveSection>(".section");
73  addDirectiveHandler<&DarwinAsmParser::parseDirectivePushSection>(
74  ".pushsection");
75  addDirectiveHandler<&DarwinAsmParser::parseDirectivePopSection>(
76  ".popsection");
77  addDirectiveHandler<&DarwinAsmParser::parseDirectivePrevious>(".previous");
78  addDirectiveHandler<&DarwinAsmParser::parseDirectiveSecureLogUnique>(
79  ".secure_log_unique");
80  addDirectiveHandler<&DarwinAsmParser::parseDirectiveSecureLogReset>(
81  ".secure_log_reset");
82  addDirectiveHandler<&DarwinAsmParser::parseDirectiveTBSS>(".tbss");
83  addDirectiveHandler<&DarwinAsmParser::parseDirectiveZerofill>(".zerofill");
84 
85  addDirectiveHandler<&DarwinAsmParser::parseDirectiveDataRegion>(
86  ".data_region");
87  addDirectiveHandler<&DarwinAsmParser::parseDirectiveDataRegionEnd>(
88  ".end_data_region");
89 
90  // Special section directives.
91  addDirectiveHandler<&DarwinAsmParser::parseSectionDirectiveBss>(".bss");
92  addDirectiveHandler<&DarwinAsmParser::parseSectionDirectiveConst>(".const");
93  addDirectiveHandler<&DarwinAsmParser::parseSectionDirectiveConstData>(
94  ".const_data");
95  addDirectiveHandler<&DarwinAsmParser::parseSectionDirectiveConstructor>(
96  ".constructor");
97  addDirectiveHandler<&DarwinAsmParser::parseSectionDirectiveCString>(
98  ".cstring");
99  addDirectiveHandler<&DarwinAsmParser::parseSectionDirectiveData>(".data");
100  addDirectiveHandler<&DarwinAsmParser::parseSectionDirectiveDestructor>(
101  ".destructor");
102  addDirectiveHandler<&DarwinAsmParser::parseSectionDirectiveDyld>(".dyld");
103  addDirectiveHandler<&DarwinAsmParser::parseSectionDirectiveFVMLibInit0>(
104  ".fvmlib_init0");
105  addDirectiveHandler<&DarwinAsmParser::parseSectionDirectiveFVMLibInit1>(
106  ".fvmlib_init1");
107  addDirectiveHandler<
108  &DarwinAsmParser::parseSectionDirectiveLazySymbolPointers>(
109  ".lazy_symbol_pointer");
110  addDirectiveHandler<&DarwinAsmParser::parseDirectiveLinkerOption>(
111  ".linker_option");
112  addDirectiveHandler<&DarwinAsmParser::parseSectionDirectiveLiteral16>(
113  ".literal16");
114  addDirectiveHandler<&DarwinAsmParser::parseSectionDirectiveLiteral4>(
115  ".literal4");
116  addDirectiveHandler<&DarwinAsmParser::parseSectionDirectiveLiteral8>(
117  ".literal8");
118  addDirectiveHandler<&DarwinAsmParser::parseSectionDirectiveModInitFunc>(
119  ".mod_init_func");
120  addDirectiveHandler<&DarwinAsmParser::parseSectionDirectiveModTermFunc>(
121  ".mod_term_func");
122  addDirectiveHandler<
123  &DarwinAsmParser::parseSectionDirectiveNonLazySymbolPointers>(
124  ".non_lazy_symbol_pointer");
125  addDirectiveHandler<
126  &DarwinAsmParser::parseSectionDirectiveThreadLocalVariablePointers>(
127  ".thread_local_variable_pointer");
128  addDirectiveHandler<&DarwinAsmParser::parseSectionDirectiveObjCCatClsMeth>(
129  ".objc_cat_cls_meth");
130  addDirectiveHandler<&DarwinAsmParser::parseSectionDirectiveObjCCatInstMeth>(
131  ".objc_cat_inst_meth");
132  addDirectiveHandler<&DarwinAsmParser::parseSectionDirectiveObjCCategory>(
133  ".objc_category");
134  addDirectiveHandler<&DarwinAsmParser::parseSectionDirectiveObjCClass>(
135  ".objc_class");
136  addDirectiveHandler<&DarwinAsmParser::parseSectionDirectiveObjCClassNames>(
137  ".objc_class_names");
138  addDirectiveHandler<&DarwinAsmParser::parseSectionDirectiveObjCClassVars>(
139  ".objc_class_vars");
140  addDirectiveHandler<&DarwinAsmParser::parseSectionDirectiveObjCClsMeth>(
141  ".objc_cls_meth");
142  addDirectiveHandler<&DarwinAsmParser::parseSectionDirectiveObjCClsRefs>(
143  ".objc_cls_refs");
144  addDirectiveHandler<&DarwinAsmParser::parseSectionDirectiveObjCInstMeth>(
145  ".objc_inst_meth");
146  addDirectiveHandler<
147  &DarwinAsmParser::parseSectionDirectiveObjCInstanceVars>(
148  ".objc_instance_vars");
149  addDirectiveHandler<&DarwinAsmParser::parseSectionDirectiveObjCMessageRefs>(
150  ".objc_message_refs");
151  addDirectiveHandler<&DarwinAsmParser::parseSectionDirectiveObjCMetaClass>(
152  ".objc_meta_class");
153  addDirectiveHandler<
154  &DarwinAsmParser::parseSectionDirectiveObjCMethVarNames>(
155  ".objc_meth_var_names");
156  addDirectiveHandler<
157  &DarwinAsmParser::parseSectionDirectiveObjCMethVarTypes>(
158  ".objc_meth_var_types");
159  addDirectiveHandler<&DarwinAsmParser::parseSectionDirectiveObjCModuleInfo>(
160  ".objc_module_info");
161  addDirectiveHandler<&DarwinAsmParser::parseSectionDirectiveObjCProtocol>(
162  ".objc_protocol");
163  addDirectiveHandler<
164  &DarwinAsmParser::parseSectionDirectiveObjCSelectorStrs>(
165  ".objc_selector_strs");
166  addDirectiveHandler<
167  &DarwinAsmParser::parseSectionDirectiveObjCStringObject>(
168  ".objc_string_object");
169  addDirectiveHandler<&DarwinAsmParser::parseSectionDirectiveObjCSymbols>(
170  ".objc_symbols");
171  addDirectiveHandler<&DarwinAsmParser::parseSectionDirectivePICSymbolStub>(
172  ".picsymbol_stub");
173  addDirectiveHandler<&DarwinAsmParser::parseSectionDirectiveStaticConst>(
174  ".static_const");
175  addDirectiveHandler<&DarwinAsmParser::parseSectionDirectiveStaticData>(
176  ".static_data");
177  addDirectiveHandler<&DarwinAsmParser::parseSectionDirectiveSymbolStub>(
178  ".symbol_stub");
179  addDirectiveHandler<&DarwinAsmParser::parseSectionDirectiveTData>(".tdata");
180  addDirectiveHandler<&DarwinAsmParser::parseSectionDirectiveText>(".text");
181  addDirectiveHandler<&DarwinAsmParser::parseSectionDirectiveThreadInitFunc>(
182  ".thread_init_func");
183  addDirectiveHandler<&DarwinAsmParser::parseSectionDirectiveTLV>(".tlv");
184 
185  addDirectiveHandler<&DarwinAsmParser::parseSectionDirectiveIdent>(".ident");
186  addDirectiveHandler<&DarwinAsmParser::parseWatchOSVersionMin>(
187  ".watchos_version_min");
188  addDirectiveHandler<&DarwinAsmParser::parseTvOSVersionMin>(
189  ".tvos_version_min");
190  addDirectiveHandler<&DarwinAsmParser::parseIOSVersionMin>(
191  ".ios_version_min");
192  addDirectiveHandler<&DarwinAsmParser::parseMacOSXVersionMin>(
193  ".macosx_version_min");
194  addDirectiveHandler<&DarwinAsmParser::parseBuildVersion>(".build_version");
195  addDirectiveHandler<&DarwinAsmParser::parseDirectiveCGProfile>(
196  ".cg_profile");
197 
198  LastVersionDirective = SMLoc();
199  }
200 
201  bool parseDirectiveAltEntry(StringRef, SMLoc);
202  bool parseDirectiveDesc(StringRef, SMLoc);
203  bool parseDirectiveIndirectSymbol(StringRef, SMLoc);
204  bool parseDirectiveDumpOrLoad(StringRef, SMLoc);
205  bool parseDirectiveLsym(StringRef, SMLoc);
206  bool parseDirectiveLinkerOption(StringRef, SMLoc);
207  bool parseDirectiveSection(StringRef, SMLoc);
208  bool parseDirectivePushSection(StringRef, SMLoc);
209  bool parseDirectivePopSection(StringRef, SMLoc);
210  bool parseDirectivePrevious(StringRef, SMLoc);
211  bool parseDirectiveSecureLogReset(StringRef, SMLoc);
212  bool parseDirectiveSecureLogUnique(StringRef, SMLoc);
213  bool parseDirectiveSubsectionsViaSymbols(StringRef, SMLoc);
214  bool parseDirectiveTBSS(StringRef, SMLoc);
215  bool parseDirectiveZerofill(StringRef, SMLoc);
216  bool parseDirectiveDataRegion(StringRef, SMLoc);
217  bool parseDirectiveDataRegionEnd(StringRef, SMLoc);
218 
219  // Named Section Directive
220  bool parseSectionDirectiveBss(StringRef, SMLoc) {
221  return parseSectionSwitch("__DATA", "__bss");
222  }
223 
224  bool parseSectionDirectiveConst(StringRef, SMLoc) {
225  return parseSectionSwitch("__TEXT", "__const");
226  }
227 
228  bool parseSectionDirectiveStaticConst(StringRef, SMLoc) {
229  return parseSectionSwitch("__TEXT", "__static_const");
230  }
231 
232  bool parseSectionDirectiveCString(StringRef, SMLoc) {
233  return parseSectionSwitch("__TEXT","__cstring",
235  }
236 
237  bool parseSectionDirectiveLiteral4(StringRef, SMLoc) {
238  return parseSectionSwitch("__TEXT", "__literal4",
240  }
241 
242  bool parseSectionDirectiveLiteral8(StringRef, SMLoc) {
243  return parseSectionSwitch("__TEXT", "__literal8",
245  }
246 
247  bool parseSectionDirectiveLiteral16(StringRef, SMLoc) {
248  return parseSectionSwitch("__TEXT","__literal16",
250  }
251 
252  bool parseSectionDirectiveConstructor(StringRef, SMLoc) {
253  return parseSectionSwitch("__TEXT","__constructor");
254  }
255 
256  bool parseSectionDirectiveDestructor(StringRef, SMLoc) {
257  return parseSectionSwitch("__TEXT","__destructor");
258  }
259 
260  bool parseSectionDirectiveFVMLibInit0(StringRef, SMLoc) {
261  return parseSectionSwitch("__TEXT","__fvmlib_init0");
262  }
263 
264  bool parseSectionDirectiveFVMLibInit1(StringRef, SMLoc) {
265  return parseSectionSwitch("__TEXT","__fvmlib_init1");
266  }
267 
268  bool parseSectionDirectiveSymbolStub(StringRef, SMLoc) {
269  return parseSectionSwitch("__TEXT","__symbol_stub",
272  // FIXME: Different on PPC and ARM.
273  0, 16);
274  }
275 
276  bool parseSectionDirectivePICSymbolStub(StringRef, SMLoc) {
277  return parseSectionSwitch("__TEXT","__picsymbol_stub",
280  }
281 
282  bool parseSectionDirectiveData(StringRef, SMLoc) {
283  return parseSectionSwitch("__DATA", "__data");
284  }
285 
286  bool parseSectionDirectiveStaticData(StringRef, SMLoc) {
287  return parseSectionSwitch("__DATA", "__static_data");
288  }
289 
290  bool parseSectionDirectiveNonLazySymbolPointers(StringRef, SMLoc) {
291  return parseSectionSwitch("__DATA", "__nl_symbol_ptr",
293  }
294 
295  bool parseSectionDirectiveLazySymbolPointers(StringRef, SMLoc) {
296  return parseSectionSwitch("__DATA", "__la_symbol_ptr",
298  }
299 
300  bool parseSectionDirectiveThreadLocalVariablePointers(StringRef, SMLoc) {
301  return parseSectionSwitch("__DATA", "__thread_ptr",
303  }
304 
305  bool parseSectionDirectiveDyld(StringRef, SMLoc) {
306  return parseSectionSwitch("__DATA", "__dyld");
307  }
308 
309  bool parseSectionDirectiveModInitFunc(StringRef, SMLoc) {
310  return parseSectionSwitch("__DATA", "__mod_init_func",
312  }
313 
314  bool parseSectionDirectiveModTermFunc(StringRef, SMLoc) {
315  return parseSectionSwitch("__DATA", "__mod_term_func",
317  }
318 
319  bool parseSectionDirectiveConstData(StringRef, SMLoc) {
320  return parseSectionSwitch("__DATA", "__const");
321  }
322 
323  bool parseSectionDirectiveObjCClass(StringRef, SMLoc) {
324  return parseSectionSwitch("__OBJC", "__class",
326  }
327 
328  bool parseSectionDirectiveObjCMetaClass(StringRef, SMLoc) {
329  return parseSectionSwitch("__OBJC", "__meta_class",
331  }
332 
333  bool parseSectionDirectiveObjCCatClsMeth(StringRef, SMLoc) {
334  return parseSectionSwitch("__OBJC", "__cat_cls_meth",
336  }
337 
338  bool parseSectionDirectiveObjCCatInstMeth(StringRef, SMLoc) {
339  return parseSectionSwitch("__OBJC", "__cat_inst_meth",
341  }
342 
343  bool parseSectionDirectiveObjCProtocol(StringRef, SMLoc) {
344  return parseSectionSwitch("__OBJC", "__protocol",
346  }
347 
348  bool parseSectionDirectiveObjCStringObject(StringRef, SMLoc) {
349  return parseSectionSwitch("__OBJC", "__string_object",
351  }
352 
353  bool parseSectionDirectiveObjCClsMeth(StringRef, SMLoc) {
354  return parseSectionSwitch("__OBJC", "__cls_meth",
356  }
357 
358  bool parseSectionDirectiveObjCInstMeth(StringRef, SMLoc) {
359  return parseSectionSwitch("__OBJC", "__inst_meth",
361  }
362 
363  bool parseSectionDirectiveObjCClsRefs(StringRef, SMLoc) {
364  return parseSectionSwitch("__OBJC", "__cls_refs",
367  }
368 
369  bool parseSectionDirectiveObjCMessageRefs(StringRef, SMLoc) {
370  return parseSectionSwitch("__OBJC", "__message_refs",
373  }
374 
375  bool parseSectionDirectiveObjCSymbols(StringRef, SMLoc) {
376  return parseSectionSwitch("__OBJC", "__symbols",
378  }
379 
380  bool parseSectionDirectiveObjCCategory(StringRef, SMLoc) {
381  return parseSectionSwitch("__OBJC", "__category",
383  }
384 
385  bool parseSectionDirectiveObjCClassVars(StringRef, SMLoc) {
386  return parseSectionSwitch("__OBJC", "__class_vars",
388  }
389 
390  bool parseSectionDirectiveObjCInstanceVars(StringRef, SMLoc) {
391  return parseSectionSwitch("__OBJC", "__instance_vars",
393  }
394 
395  bool parseSectionDirectiveObjCModuleInfo(StringRef, SMLoc) {
396  return parseSectionSwitch("__OBJC", "__module_info",
398  }
399 
400  bool parseSectionDirectiveObjCClassNames(StringRef, SMLoc) {
401  return parseSectionSwitch("__TEXT", "__cstring",
403  }
404 
405  bool parseSectionDirectiveObjCMethVarTypes(StringRef, SMLoc) {
406  return parseSectionSwitch("__TEXT", "__cstring",
408  }
409 
410  bool parseSectionDirectiveObjCMethVarNames(StringRef, SMLoc) {
411  return parseSectionSwitch("__TEXT", "__cstring",
413  }
414 
415  bool parseSectionDirectiveObjCSelectorStrs(StringRef, SMLoc) {
416  return parseSectionSwitch("__OBJC", "__selector_strs",
418  }
419 
420  bool parseSectionDirectiveTData(StringRef, SMLoc) {
421  return parseSectionSwitch("__DATA", "__thread_data",
423  }
424 
425  bool parseSectionDirectiveText(StringRef, SMLoc) {
426  return parseSectionSwitch("__TEXT", "__text",
428  }
429 
430  bool parseSectionDirectiveTLV(StringRef, SMLoc) {
431  return parseSectionSwitch("__DATA", "__thread_vars",
433  }
434 
435  bool parseSectionDirectiveIdent(StringRef, SMLoc) {
436  // Darwin silently ignores the .ident directive.
437  getParser().eatToEndOfStatement();
438  return false;
439  }
440 
441  bool parseSectionDirectiveThreadInitFunc(StringRef, SMLoc) {
442  return parseSectionSwitch("__DATA", "__thread_init",
444  }
445 
446  bool parseWatchOSVersionMin(StringRef Directive, SMLoc Loc) {
447  return parseVersionMin(Directive, Loc, MCVM_WatchOSVersionMin);
448  }
449  bool parseTvOSVersionMin(StringRef Directive, SMLoc Loc) {
450  return parseVersionMin(Directive, Loc, MCVM_TvOSVersionMin);
451  }
452  bool parseIOSVersionMin(StringRef Directive, SMLoc Loc) {
453  return parseVersionMin(Directive, Loc, MCVM_IOSVersionMin);
454  }
455  bool parseMacOSXVersionMin(StringRef Directive, SMLoc Loc) {
456  return parseVersionMin(Directive, Loc, MCVM_OSXVersionMin);
457  }
458 
459  bool parseBuildVersion(StringRef Directive, SMLoc Loc);
460  bool parseVersionMin(StringRef Directive, SMLoc Loc, MCVersionMinType Type);
461  bool parseMajorMinorVersionComponent(unsigned *Major, unsigned *Minor,
462  const char *VersionName);
463  bool parseOptionalTrailingVersionComponent(unsigned *Component,
464  const char *ComponentName);
465  bool parseVersion(unsigned *Major, unsigned *Minor, unsigned *Update);
466  bool parseSDKVersion(VersionTuple &SDKVersion);
467  void checkVersion(StringRef Directive, StringRef Arg, SMLoc Loc,
468  Triple::OSType ExpectedOS);
469  bool parseDirectiveCGProfile(StringRef Directive, SMLoc Loc);
470 };
471 
472 } // end anonymous namespace
473 
474 bool DarwinAsmParser::parseSectionSwitch(StringRef Segment, StringRef Section,
475  unsigned TAA, unsigned Alignment,
476  unsigned StubSize) {
477  if (getLexer().isNot(AsmToken::EndOfStatement))
478  return TokError("unexpected token in section switching directive");
479  Lex();
480 
481  // FIXME: Arch specific.
482  bool isText = TAA & MachO::S_ATTR_PURE_INSTRUCTIONS;
483  getStreamer().switchSection(getContext().getMachOSection(
484  Segment, Section, TAA, StubSize,
486 
487  // Set the implicit alignment, if any.
488  //
489  // FIXME: This isn't really what 'as' does; I think it just uses the implicit
490  // alignment on the section (e.g., if one manually inserts bytes into the
491  // section, then just issuing the section switch directive will not realign
492  // the section. However, this is arguably more reasonable behavior, and there
493  // is no good reason for someone to intentionally emit incorrectly sized
494  // values into the implicitly aligned sections.
495  if (Alignment)
496  getStreamer().emitValueToAlignment(Align(Alignment));
497 
498  return false;
499 }
500 
501 /// parseDirectiveAltEntry
502 /// ::= .alt_entry identifier
503 bool DarwinAsmParser::parseDirectiveAltEntry(StringRef, SMLoc) {
504  StringRef Name;
505  if (getParser().parseIdentifier(Name))
506  return TokError("expected identifier in directive");
507 
508  // Look up symbol.
509  MCSymbol *Sym = getContext().getOrCreateSymbol(Name);
510 
511  if (Sym->isDefined())
512  return TokError(".alt_entry must preceed symbol definition");
513 
514  if (!getStreamer().emitSymbolAttribute(Sym, MCSA_AltEntry))
515  return TokError("unable to emit symbol attribute");
516 
517  Lex();
518  return false;
519 }
520 
521 /// parseDirectiveDesc
522 /// ::= .desc identifier , expression
523 bool DarwinAsmParser::parseDirectiveDesc(StringRef, SMLoc) {
524  StringRef Name;
525  if (getParser().parseIdentifier(Name))
526  return TokError("expected identifier in directive");
527 
528  // Handle the identifier as the key symbol.
529  MCSymbol *Sym = getContext().getOrCreateSymbol(Name);
530 
531  if (getLexer().isNot(AsmToken::Comma))
532  return TokError("unexpected token in '.desc' directive");
533  Lex();
534 
535  int64_t DescValue;
536  if (getParser().parseAbsoluteExpression(DescValue))
537  return true;
538 
539  if (getLexer().isNot(AsmToken::EndOfStatement))
540  return TokError("unexpected token in '.desc' directive");
541 
542  Lex();
543 
544  // Set the n_desc field of this Symbol to this DescValue
545  getStreamer().emitSymbolDesc(Sym, DescValue);
546 
547  return false;
548 }
549 
550 /// parseDirectiveIndirectSymbol
551 /// ::= .indirect_symbol identifier
552 bool DarwinAsmParser::parseDirectiveIndirectSymbol(StringRef, SMLoc Loc) {
553  const MCSectionMachO *Current = static_cast<const MCSectionMachO *>(
554  getStreamer().getCurrentSectionOnly());
560  return Error(Loc, "indirect symbol not in a symbol pointer or stub "
561  "section");
562 
563  StringRef Name;
564  if (getParser().parseIdentifier(Name))
565  return TokError("expected identifier in .indirect_symbol directive");
566 
567  MCSymbol *Sym = getContext().getOrCreateSymbol(Name);
568 
569  // Assembler local symbols don't make any sense here. Complain loudly.
570  if (Sym->isTemporary())
571  return TokError("non-local symbol required in directive");
572 
573  if (!getStreamer().emitSymbolAttribute(Sym, MCSA_IndirectSymbol))
574  return TokError("unable to emit indirect symbol attribute for: " + Name);
575 
576  if (getLexer().isNot(AsmToken::EndOfStatement))
577  return TokError("unexpected token in '.indirect_symbol' directive");
578 
579  Lex();
580 
581  return false;
582 }
583 
584 /// parseDirectiveDumpOrLoad
585 /// ::= ( .dump | .load ) "filename"
586 bool DarwinAsmParser::parseDirectiveDumpOrLoad(StringRef Directive,
587  SMLoc IDLoc) {
588  bool IsDump = Directive == ".dump";
589  if (getLexer().isNot(AsmToken::String))
590  return TokError("expected string in '.dump' or '.load' directive");
591 
592  Lex();
593 
594  if (getLexer().isNot(AsmToken::EndOfStatement))
595  return TokError("unexpected token in '.dump' or '.load' directive");
596 
597  Lex();
598 
599  // FIXME: If/when .dump and .load are implemented they will be done in the
600  // the assembly parser and not have any need for an MCStreamer API.
601  if (IsDump)
602  return Warning(IDLoc, "ignoring directive .dump for now");
603  else
604  return Warning(IDLoc, "ignoring directive .load for now");
605 }
606 
607 /// ParseDirectiveLinkerOption
608 /// ::= .linker_option "string" ( , "string" )*
609 bool DarwinAsmParser::parseDirectiveLinkerOption(StringRef IDVal, SMLoc) {
611  while (true) {
612  if (getLexer().isNot(AsmToken::String))
613  return TokError("expected string in '" + Twine(IDVal) + "' directive");
614 
615  std::string Data;
616  if (getParser().parseEscapedString(Data))
617  return true;
618 
619  Args.push_back(Data);
620 
621  if (getLexer().is(AsmToken::EndOfStatement))
622  break;
623 
624  if (getLexer().isNot(AsmToken::Comma))
625  return TokError("unexpected token in '" + Twine(IDVal) + "' directive");
626  Lex();
627  }
628 
629  getStreamer().emitLinkerOptions(Args);
630  return false;
631 }
632 
633 /// parseDirectiveLsym
634 /// ::= .lsym identifier , expression
635 bool DarwinAsmParser::parseDirectiveLsym(StringRef, SMLoc) {
636  StringRef Name;
637  if (getParser().parseIdentifier(Name))
638  return TokError("expected identifier in directive");
639 
640  // Handle the identifier as the key symbol.
641  MCSymbol *Sym = getContext().getOrCreateSymbol(Name);
642 
643  if (getLexer().isNot(AsmToken::Comma))
644  return TokError("unexpected token in '.lsym' directive");
645  Lex();
646 
647  const MCExpr *Value;
648  if (getParser().parseExpression(Value))
649  return true;
650 
651  if (getLexer().isNot(AsmToken::EndOfStatement))
652  return TokError("unexpected token in '.lsym' directive");
653 
654  Lex();
655 
656  // We don't currently support this directive.
657  //
658  // FIXME: Diagnostic location!
659  (void) Sym;
660  return TokError("directive '.lsym' is unsupported");
661 }
662 
663 /// parseDirectiveSection:
664 /// ::= .section identifier (',' identifier)*
665 bool DarwinAsmParser::parseDirectiveSection(StringRef, SMLoc) {
666  SMLoc Loc = getLexer().getLoc();
667 
669  if (getParser().parseIdentifier(SectionName))
670  return Error(Loc, "expected identifier after '.section' directive");
671 
672  // Verify there is a following comma.
673  if (!getLexer().is(AsmToken::Comma))
674  return TokError("unexpected token in '.section' directive");
675 
676  std::string SectionSpec = std::string(SectionName);
677  SectionSpec += ",";
678 
679  // Add all the tokens until the end of the line, ParseSectionSpecifier will
680  // handle this.
681  StringRef EOL = getLexer().LexUntilEndOfStatement();
682  SectionSpec.append(EOL.begin(), EOL.end());
683 
684  Lex();
685  if (getLexer().isNot(AsmToken::EndOfStatement))
686  return TokError("unexpected token in '.section' directive");
687  Lex();
688 
689  StringRef Segment, Section;
690  unsigned StubSize;
691  unsigned TAA;
692  bool TAAParsed;
694  SectionSpec, Segment, Section, TAA, TAAParsed, StubSize))
695  return Error(Loc, toString(std::move(E)));
696 
697  // Issue a warning if the target is not powerpc and Section is a *coal* section.
698  Triple TT = getParser().getContext().getTargetTriple();
699  Triple::ArchType ArchTy = TT.getArch();
700 
701  if (ArchTy != Triple::ppc && ArchTy != Triple::ppc64) {
702  StringRef NonCoalSection = StringSwitch<StringRef>(Section)
703  .Case("__textcoal_nt", "__text")
704  .Case("__const_coal", "__const")
705  .Case("__datacoal_nt", "__data")
706  .Default(Section);
707 
708  if (!Section.equals(NonCoalSection)) {
709  StringRef SectionVal(Loc.getPointer());
710  size_t B = SectionVal.find(',') + 1, E = SectionVal.find(',', B);
711  SMLoc BLoc = SMLoc::getFromPointer(SectionVal.data() + B);
712  SMLoc ELoc = SMLoc::getFromPointer(SectionVal.data() + E);
713  getParser().Warning(Loc, "section \"" + Section + "\" is deprecated",
714  SMRange(BLoc, ELoc));
715  getParser().Note(Loc, "change section name to \"" + NonCoalSection +
716  "\"", SMRange(BLoc, ELoc));
717  }
718  }
719 
720  // FIXME: Arch specific.
721  bool isText = Segment == "__TEXT"; // FIXME: Hack.
722  getStreamer().switchSection(getContext().getMachOSection(
723  Segment, Section, TAA, StubSize,
725  return false;
726 }
727 
728 /// ParseDirectivePushSection:
729 /// ::= .pushsection identifier (',' identifier)*
730 bool DarwinAsmParser::parseDirectivePushSection(StringRef S, SMLoc Loc) {
731  getStreamer().pushSection();
732 
733  if (parseDirectiveSection(S, Loc)) {
734  getStreamer().popSection();
735  return true;
736  }
737 
738  return false;
739 }
740 
741 /// ParseDirectivePopSection:
742 /// ::= .popsection
743 bool DarwinAsmParser::parseDirectivePopSection(StringRef, SMLoc) {
744  if (!getStreamer().popSection())
745  return TokError(".popsection without corresponding .pushsection");
746  return false;
747 }
748 
749 /// ParseDirectivePrevious:
750 /// ::= .previous
751 bool DarwinAsmParser::parseDirectivePrevious(StringRef DirName, SMLoc) {
752  MCSectionSubPair PreviousSection = getStreamer().getPreviousSection();
753  if (!PreviousSection.first)
754  return TokError(".previous without corresponding .section");
755  getStreamer().switchSection(PreviousSection.first, PreviousSection.second);
756  return false;
757 }
758 
759 /// ParseDirectiveSecureLogUnique
760 /// ::= .secure_log_unique ... message ...
761 bool DarwinAsmParser::parseDirectiveSecureLogUnique(StringRef, SMLoc IDLoc) {
762  StringRef LogMessage = getParser().parseStringToEndOfStatement();
763  if (getLexer().isNot(AsmToken::EndOfStatement))
764  return TokError("unexpected token in '.secure_log_unique' directive");
765 
766  if (getContext().getSecureLogUsed())
767  return Error(IDLoc, ".secure_log_unique specified multiple times");
768 
769  // Get the secure log path.
770  StringRef SecureLogFile = getContext().getSecureLogFile();
771  if (SecureLogFile.empty())
772  return Error(IDLoc, ".secure_log_unique used but AS_SECURE_LOG_FILE "
773  "environment variable unset.");
774 
775  // Open the secure log file if we haven't already.
776  raw_fd_ostream *OS = getContext().getSecureLog();
777  if (!OS) {
778  std::error_code EC;
779  auto NewOS = std::make_unique<raw_fd_ostream>(
780  SecureLogFile, EC, sys::fs::OF_Append | sys::fs::OF_TextWithCRLF);
781  if (EC)
782  return Error(IDLoc, Twine("can't open secure log file: ") +
783  SecureLogFile + " (" + EC.message() + ")");
784  OS = NewOS.get();
785  getContext().setSecureLog(std::move(NewOS));
786  }
787 
788  // Write the message.
789  unsigned CurBuf = getSourceManager().FindBufferContainingLoc(IDLoc);
790  *OS << getSourceManager().getBufferInfo(CurBuf).Buffer->getBufferIdentifier()
791  << ":" << getSourceManager().FindLineNumber(IDLoc, CurBuf) << ":"
792  << LogMessage + "\n";
793 
794  getContext().setSecureLogUsed(true);
795 
796  return false;
797 }
798 
799 /// ParseDirectiveSecureLogReset
800 /// ::= .secure_log_reset
801 bool DarwinAsmParser::parseDirectiveSecureLogReset(StringRef, SMLoc IDLoc) {
802  if (getLexer().isNot(AsmToken::EndOfStatement))
803  return TokError("unexpected token in '.secure_log_reset' directive");
804 
805  Lex();
806 
807  getContext().setSecureLogUsed(false);
808 
809  return false;
810 }
811 
812 /// parseDirectiveSubsectionsViaSymbols
813 /// ::= .subsections_via_symbols
814 bool DarwinAsmParser::parseDirectiveSubsectionsViaSymbols(StringRef, SMLoc) {
815  if (getLexer().isNot(AsmToken::EndOfStatement))
816  return TokError("unexpected token in '.subsections_via_symbols' directive");
817 
818  Lex();
819 
820  getStreamer().emitAssemblerFlag(MCAF_SubsectionsViaSymbols);
821 
822  return false;
823 }
824 
825 /// ParseDirectiveTBSS
826 /// ::= .tbss identifier, size, align
827 bool DarwinAsmParser::parseDirectiveTBSS(StringRef, SMLoc) {
828  SMLoc IDLoc = getLexer().getLoc();
829  StringRef Name;
830  if (getParser().parseIdentifier(Name))
831  return TokError("expected identifier in directive");
832 
833  // Handle the identifier as the key symbol.
834  MCSymbol *Sym = getContext().getOrCreateSymbol(Name);
835 
836  if (getLexer().isNot(AsmToken::Comma))
837  return TokError("unexpected token in directive");
838  Lex();
839 
840  int64_t Size;
841  SMLoc SizeLoc = getLexer().getLoc();
842  if (getParser().parseAbsoluteExpression(Size))
843  return true;
844 
845  int64_t Pow2Alignment = 0;
846  SMLoc Pow2AlignmentLoc;
847  if (getLexer().is(AsmToken::Comma)) {
848  Lex();
849  Pow2AlignmentLoc = getLexer().getLoc();
850  if (getParser().parseAbsoluteExpression(Pow2Alignment))
851  return true;
852  }
853 
854  if (getLexer().isNot(AsmToken::EndOfStatement))
855  return TokError("unexpected token in '.tbss' directive");
856 
857  Lex();
858 
859  if (Size < 0)
860  return Error(SizeLoc, "invalid '.tbss' directive size, can't be less than"
861  "zero");
862 
863  // FIXME: Diagnose overflow.
864  if (Pow2Alignment < 0)
865  return Error(Pow2AlignmentLoc, "invalid '.tbss' alignment, can't be less"
866  "than zero");
867 
868  if (!Sym->isUndefined())
869  return Error(IDLoc, "invalid symbol redefinition");
870 
871  getStreamer().emitTBSSSymbol(
872  getContext().getMachOSection("__DATA", "__thread_bss",
875  Sym, Size, 1 << Pow2Alignment);
876 
877  return false;
878 }
879 
880 /// ParseDirectiveZerofill
881 /// ::= .zerofill segname , sectname [, identifier , size_expression [
882 /// , align_expression ]]
883 bool DarwinAsmParser::parseDirectiveZerofill(StringRef, SMLoc) {
884  StringRef Segment;
885  if (getParser().parseIdentifier(Segment))
886  return TokError("expected segment name after '.zerofill' directive");
887 
888  if (getLexer().isNot(AsmToken::Comma))
889  return TokError("unexpected token in directive");
890  Lex();
891 
893  SMLoc SectionLoc = getLexer().getLoc();
894  if (getParser().parseIdentifier(Section))
895  return TokError("expected section name after comma in '.zerofill' "
896  "directive");
897 
898  // If this is the end of the line all that was wanted was to create the
899  // the section but with no symbol.
900  if (getLexer().is(AsmToken::EndOfStatement)) {
901  // Create the zerofill section but no symbol
902  getStreamer().emitZerofill(
903  getContext().getMachOSection(Segment, Section, MachO::S_ZEROFILL, 0,
905  /*Symbol=*/nullptr, /*Size=*/0, /*ByteAlignment=*/0, SectionLoc);
906  return false;
907  }
908 
909  if (getLexer().isNot(AsmToken::Comma))
910  return TokError("unexpected token in directive");
911  Lex();
912 
913  SMLoc IDLoc = getLexer().getLoc();
914  StringRef IDStr;
915  if (getParser().parseIdentifier(IDStr))
916  return TokError("expected identifier in directive");
917 
918  // handle the identifier as the key symbol.
919  MCSymbol *Sym = getContext().getOrCreateSymbol(IDStr);
920 
921  if (getLexer().isNot(AsmToken::Comma))
922  return TokError("unexpected token in directive");
923  Lex();
924 
925  int64_t Size;
926  SMLoc SizeLoc = getLexer().getLoc();
927  if (getParser().parseAbsoluteExpression(Size))
928  return true;
929 
930  int64_t Pow2Alignment = 0;
931  SMLoc Pow2AlignmentLoc;
932  if (getLexer().is(AsmToken::Comma)) {
933  Lex();
934  Pow2AlignmentLoc = getLexer().getLoc();
935  if (getParser().parseAbsoluteExpression(Pow2Alignment))
936  return true;
937  }
938 
939  if (getLexer().isNot(AsmToken::EndOfStatement))
940  return TokError("unexpected token in '.zerofill' directive");
941 
942  Lex();
943 
944  if (Size < 0)
945  return Error(SizeLoc, "invalid '.zerofill' directive size, can't be less "
946  "than zero");
947 
948  // NOTE: The alignment in the directive is a power of 2 value, the assembler
949  // may internally end up wanting an alignment in bytes.
950  // FIXME: Diagnose overflow.
951  if (Pow2Alignment < 0)
952  return Error(Pow2AlignmentLoc, "invalid '.zerofill' directive alignment, "
953  "can't be less than zero");
954 
955  if (!Sym->isUndefined())
956  return Error(IDLoc, "invalid symbol redefinition");
957 
958  // Create the zerofill Symbol with Size and Pow2Alignment
959  //
960  // FIXME: Arch specific.
961  getStreamer().emitZerofill(getContext().getMachOSection(
962  Segment, Section, MachO::S_ZEROFILL,
963  0, SectionKind::getBSS()),
964  Sym, Size, 1 << Pow2Alignment, SectionLoc);
965 
966  return false;
967 }
968 
969 /// ParseDirectiveDataRegion
970 /// ::= .data_region [ ( jt8 | jt16 | jt32 ) ]
971 bool DarwinAsmParser::parseDirectiveDataRegion(StringRef, SMLoc) {
972  if (getLexer().is(AsmToken::EndOfStatement)) {
973  Lex();
974  getStreamer().emitDataRegion(MCDR_DataRegion);
975  return false;
976  }
977  StringRef RegionType;
978  SMLoc Loc = getParser().getTok().getLoc();
979  if (getParser().parseIdentifier(RegionType))
980  return TokError("expected region type after '.data_region' directive");
981  int Kind = StringSwitch<int>(RegionType)
982  .Case("jt8", MCDR_DataRegionJT8)
983  .Case("jt16", MCDR_DataRegionJT16)
984  .Case("jt32", MCDR_DataRegionJT32)
985  .Default(-1);
986  if (Kind == -1)
987  return Error(Loc, "unknown region type in '.data_region' directive");
988  Lex();
989 
990  getStreamer().emitDataRegion((MCDataRegionType)Kind);
991  return false;
992 }
993 
994 /// ParseDirectiveDataRegionEnd
995 /// ::= .end_data_region
996 bool DarwinAsmParser::parseDirectiveDataRegionEnd(StringRef, SMLoc) {
997  if (getLexer().isNot(AsmToken::EndOfStatement))
998  return TokError("unexpected token in '.end_data_region' directive");
999 
1000  Lex();
1001  getStreamer().emitDataRegion(MCDR_DataRegionEnd);
1002  return false;
1003 }
1004 
1005 static bool isSDKVersionToken(const AsmToken &Tok) {
1006  return Tok.is(AsmToken::Identifier) && Tok.getIdentifier() == "sdk_version";
1007 }
1008 
1009 /// parseMajorMinorVersionComponent ::= major, minor
1010 bool DarwinAsmParser::parseMajorMinorVersionComponent(unsigned *Major,
1011  unsigned *Minor,
1012  const char *VersionName) {
1013  // Get the major version number.
1014  if (getLexer().isNot(AsmToken::Integer))
1015  return TokError(Twine("invalid ") + VersionName +
1016  " major version number, integer expected");
1017  int64_t MajorVal = getLexer().getTok().getIntVal();
1018  if (MajorVal > 65535 || MajorVal <= 0)
1019  return TokError(Twine("invalid ") + VersionName + " major version number");
1020  *Major = (unsigned)MajorVal;
1021  Lex();
1022  if (getLexer().isNot(AsmToken::Comma))
1023  return TokError(Twine(VersionName) +
1024  " minor version number required, comma expected");
1025  Lex();
1026  // Get the minor version number.
1027  if (getLexer().isNot(AsmToken::Integer))
1028  return TokError(Twine("invalid ") + VersionName +
1029  " minor version number, integer expected");
1030  int64_t MinorVal = getLexer().getTok().getIntVal();
1031  if (MinorVal > 255 || MinorVal < 0)
1032  return TokError(Twine("invalid ") + VersionName + " minor version number");
1033  *Minor = MinorVal;
1034  Lex();
1035  return false;
1036 }
1037 
1038 /// parseOptionalTrailingVersionComponent ::= , version_number
1039 bool DarwinAsmParser::parseOptionalTrailingVersionComponent(
1040  unsigned *Component, const char *ComponentName) {
1041  assert(getLexer().is(AsmToken::Comma) && "comma expected");
1042  Lex();
1043  if (getLexer().isNot(AsmToken::Integer))
1044  return TokError(Twine("invalid ") + ComponentName +
1045  " version number, integer expected");
1046  int64_t Val = getLexer().getTok().getIntVal();
1047  if (Val > 255 || Val < 0)
1048  return TokError(Twine("invalid ") + ComponentName + " version number");
1049  *Component = Val;
1050  Lex();
1051  return false;
1052 }
1053 
1054 /// parseVersion ::= parseMajorMinorVersionComponent
1055 /// parseOptionalTrailingVersionComponent
1056 bool DarwinAsmParser::parseVersion(unsigned *Major, unsigned *Minor,
1057  unsigned *Update) {
1058  if (parseMajorMinorVersionComponent(Major, Minor, "OS"))
1059  return true;
1060 
1061  // Get the update level, if specified
1062  *Update = 0;
1063  if (getLexer().is(AsmToken::EndOfStatement) ||
1064  isSDKVersionToken(getLexer().getTok()))
1065  return false;
1066  if (getLexer().isNot(AsmToken::Comma))
1067  return TokError("invalid OS update specifier, comma expected");
1068  if (parseOptionalTrailingVersionComponent(Update, "OS update"))
1069  return true;
1070  return false;
1071 }
1072 
1073 bool DarwinAsmParser::parseSDKVersion(VersionTuple &SDKVersion) {
1074  assert(isSDKVersionToken(getLexer().getTok()) && "expected sdk_version");
1075  Lex();
1076  unsigned Major, Minor;
1077  if (parseMajorMinorVersionComponent(&Major, &Minor, "SDK"))
1078  return true;
1079  SDKVersion = VersionTuple(Major, Minor);
1080 
1081  // Get the subminor version, if specified.
1082  if (getLexer().is(AsmToken::Comma)) {
1083  unsigned Subminor;
1084  if (parseOptionalTrailingVersionComponent(&Subminor, "SDK subminor"))
1085  return true;
1086  SDKVersion = VersionTuple(Major, Minor, Subminor);
1087  }
1088  return false;
1089 }
1090 
1091 void DarwinAsmParser::checkVersion(StringRef Directive, StringRef Arg,
1092  SMLoc Loc, Triple::OSType ExpectedOS) {
1093  const Triple &Target = getContext().getTargetTriple();
1094  if (Target.getOS() != ExpectedOS)
1095  Warning(Loc, Twine(Directive) +
1096  (Arg.empty() ? Twine() : Twine(' ') + Arg) +
1097  " used while targeting " + Target.getOSName());
1098 
1099  if (LastVersionDirective.isValid()) {
1100  Warning(Loc, "overriding previous version directive");
1101  Note(LastVersionDirective, "previous definition is here");
1102  }
1103  LastVersionDirective = Loc;
1104 }
1105 
1107  switch (Type) {
1109  case MCVM_TvOSVersionMin: return Triple::TvOS;
1110  case MCVM_IOSVersionMin: return Triple::IOS;
1111  case MCVM_OSXVersionMin: return Triple::MacOSX;
1112  }
1113  llvm_unreachable("Invalid mc version min type");
1114 }
1115 
1116 /// parseVersionMin
1117 /// ::= .ios_version_min parseVersion parseSDKVersion
1118 /// | .macosx_version_min parseVersion parseSDKVersion
1119 /// | .tvos_version_min parseVersion parseSDKVersion
1120 /// | .watchos_version_min parseVersion parseSDKVersion
1121 bool DarwinAsmParser::parseVersionMin(StringRef Directive, SMLoc Loc,
1123  unsigned Major;
1124  unsigned Minor;
1125  unsigned Update;
1126  if (parseVersion(&Major, &Minor, &Update))
1127  return true;
1128 
1129  VersionTuple SDKVersion;
1130  if (isSDKVersionToken(getLexer().getTok()) && parseSDKVersion(SDKVersion))
1131  return true;
1132 
1133  if (parseToken(AsmToken::EndOfStatement))
1134  return addErrorSuffix(Twine(" in '") + Directive + "' directive");
1135 
1136  Triple::OSType ExpectedOS = getOSTypeFromMCVM(Type);
1137  checkVersion(Directive, StringRef(), Loc, ExpectedOS);
1138  getStreamer().emitVersionMin(Type, Major, Minor, Update, SDKVersion);
1139  return false;
1140 }
1141 
1143  switch (Type) {
1144  case MachO::PLATFORM_UNKNOWN: /* silence warning */
1145  break;
1147  case MachO::PLATFORM_IOS: return Triple::IOS;
1148  case MachO::PLATFORM_TVOS: return Triple::TvOS;
1150  case MachO::PLATFORM_BRIDGEOS: /* silence warning */ break;
1152  return Triple::DriverKit;
1154  case MachO::PLATFORM_IOSSIMULATOR: /* silence warning */ break;
1155  case MachO::PLATFORM_TVOSSIMULATOR: /* silence warning */ break;
1156  case MachO::PLATFORM_WATCHOSSIMULATOR: /* silence warning */ break;
1157  }
1158  llvm_unreachable("Invalid mach-o platform type");
1159 }
1160 
1161 /// parseBuildVersion
1162 /// ::= .build_version (macos|ios|tvos|watchos), parseVersion parseSDKVersion
1163 bool DarwinAsmParser::parseBuildVersion(StringRef Directive, SMLoc Loc) {
1164  StringRef PlatformName;
1165  SMLoc PlatformLoc = getTok().getLoc();
1166  if (getParser().parseIdentifier(PlatformName))
1167  return TokError("platform name expected");
1168 
1169  unsigned Platform = StringSwitch<unsigned>(PlatformName)
1170  .Case("macos", MachO::PLATFORM_MACOS)
1171  .Case("ios", MachO::PLATFORM_IOS)
1172  .Case("tvos", MachO::PLATFORM_TVOS)
1173  .Case("watchos", MachO::PLATFORM_WATCHOS)
1174  .Case("macCatalyst", MachO::PLATFORM_MACCATALYST)
1175  .Case("driverkit", MachO::PLATFORM_DRIVERKIT)
1176  .Default(0);
1177  if (Platform == 0)
1178  return Error(PlatformLoc, "unknown platform name");
1179 
1180  if (getLexer().isNot(AsmToken::Comma))
1181  return TokError("version number required, comma expected");
1182  Lex();
1183 
1184  unsigned Major;
1185  unsigned Minor;
1186  unsigned Update;
1187  if (parseVersion(&Major, &Minor, &Update))
1188  return true;
1189 
1190  VersionTuple SDKVersion;
1191  if (isSDKVersionToken(getLexer().getTok()) && parseSDKVersion(SDKVersion))
1192  return true;
1193 
1194  if (parseToken(AsmToken::EndOfStatement))
1195  return addErrorSuffix(" in '.build_version' directive");
1196 
1197  Triple::OSType ExpectedOS
1199  checkVersion(Directive, PlatformName, Loc, ExpectedOS);
1200  getStreamer().emitBuildVersion(Platform, Major, Minor, Update, SDKVersion);
1201  return false;
1202 }
1203 
1204 /// parseDirectiveCGProfile
1205 /// ::= .cg_profile from, to, count
1206 bool DarwinAsmParser::parseDirectiveCGProfile(StringRef S, SMLoc Loc) {
1208 }
1209 
1210 namespace llvm {
1211 
1213  return new DarwinAsmParser;
1214 }
1215 
1216 } // end llvm namespace
llvm::Check::Size
@ Size
Definition: FileCheck.h:77
llvm::MachO::S_CSTRING_LITERALS
@ S_CSTRING_LITERALS
S_CSTRING_LITERALS - Section with literal C strings.
Definition: MachO.h:131
llvm::StringSwitch::Case
StringSwitch & Case(StringLiteral S, T Value)
Definition: StringSwitch.h:70
MemoryBuffer.h
llvm::MCAsmParser
Generic assembler parser interface, for use by target specific assembly parsers.
Definition: MCAsmParser.h:124
llvm::MachO::S_ATTR_NO_DEAD_STRIP
@ S_ATTR_NO_DEAD_STRIP
S_ATTR_NO_DEAD_STRIP - No dead stripping.
Definition: MachO.h:200
is
should just be implemented with a CLZ instruction Since there are other e that share this it would be best to implement this in a target independent as zero is the default value for the binary encoder e add r0 add r5 Register operands should be distinct That is
Definition: README.txt:725
llvm::MCVersionMinType
MCVersionMinType
Definition: MCDirectives.h:67
llvm::MachO::PLATFORM_MACOS
@ PLATFORM_MACOS
Definition: MachO.h:499
llvm
This is an optimization pass for GlobalISel generic memory operations.
Definition: AddressRanges.h:18
llvm::MachO::PLATFORM_WATCHOSSIMULATOR
@ PLATFORM_WATCHOSSIMULATOR
Definition: MachO.h:507
llvm::MCDataRegionType
MCDataRegionType
Definition: MCDirectives.h:59
llvm::MCSymbol
MCSymbol - Instances of this class represent a symbol name in the MC file, and MCSymbols are created ...
Definition: MCSymbol.h:41
llvm::AsmToken::is
bool is(TokenKind K) const
Definition: MCAsmMacro.h:82
llvm::ARM::PredBlockMask::TT
@ TT
FileSystem.h
llvm::MCVM_WatchOSVersionMin
@ MCVM_WatchOSVersionMin
.watchos_version_min
Definition: MCDirectives.h:71
llvm::MCSymbol::isTemporary
bool isTemporary() const
isTemporary - Check if this is an assembler temporary symbol.
Definition: MCSymbol.h:215
llvm::MCAsmParserExtension::ParseDirectiveCGProfile
bool ParseDirectiveCGProfile(StringRef, SMLoc)
ParseDirectiveCGProfile ::= .cg_profile identifier, identifier, <number>
Definition: MCAsmParserExtension.cpp:27
Note
We currently emits eax Perhaps this is what we really should generate is Is imull three or four cycles Note
Definition: README.txt:239
StringRef.h
llvm::AsmToken::EndOfStatement
@ EndOfStatement
Definition: MCAsmMacro.h:42
MCDirectives.h
llvm::Target
Target - Wrapper for Target specific information.
Definition: TargetRegistry.h:149
llvm::SmallVector< std::string, 4 >
llvm::MCVM_IOSVersionMin
@ MCVM_IOSVersionMin
.ios_version_min
Definition: MCDirectives.h:68
llvm::MCSymbol::isUndefined
bool isUndefined(bool SetUsed=true) const
isUndefined - Check if this symbol undefined (i.e., implicitly defined).
Definition: MCSymbol.h:252
Error.h
llvm::Triple::IOS
@ IOS
Definition: Triple.h:193
llvm::Triple
Triple - Helper class for working with autoconf configuration names.
Definition: Triple.h:44
llvm::MachO::PLATFORM_IOS
@ PLATFORM_IOS
Definition: MachO.h:500
llvm::MachO::S_LITERAL_POINTERS
@ S_LITERAL_POINTERS
S_LITERAL_POINTERS - Section with pointers to literals.
Definition: MachO.h:137
llvm::MachO::PLATFORM_MACCATALYST
@ PLATFORM_MACCATALYST
Definition: MachO.h:504
isSDKVersionToken
static bool isSDKVersionToken(const AsmToken &Tok)
Definition: DarwinAsmParser.cpp:1005
llvm::Type
The instances of the Type class are immutable: once they are created, they are never changed.
Definition: Type.h:45
llvm::MCSymbol::isDefined
bool isDefined() const
isDefined - Check if this symbol is defined (i.e., it has an address).
Definition: MCSymbol.h:243
llvm::AsmToken::Integer
@ Integer
Definition: MCAsmMacro.h:32
llvm::AMDGPU::VOPD::Component
Component
Definition: AMDGPUBaseInfo.h:514
llvm::Triple::ppc
@ ppc
Definition: Triple.h:69
llvm::MCVM_OSXVersionMin
@ MCVM_OSXVersionMin
.macosx_version_min
Definition: MCDirectives.h:69
llvm::MachO::S_ZEROFILL
@ S_ZEROFILL
S_ZEROFILL - Zero fill on demand section.
Definition: MachO.h:129
llvm::MachO::S_SYMBOL_STUBS
@ S_SYMBOL_STUBS
S_SYMBOL_STUBS - Section with symbol stubs, byte size of stub in the Reserved2 field.
Definition: MachO.h:144
llvm::MachO::S_8BYTE_LITERALS
@ S_8BYTE_LITERALS
S_8BYTE_LITERALS - Section with 8 byte literals.
Definition: MachO.h:135
MCAsmParser.h
llvm::Data
@ Data
Definition: SIMachineScheduler.h:55
llvm::Triple::WatchOS
@ WatchOS
Definition: Triple.h:215
llvm::MachO::S_MOD_TERM_FUNC_POINTERS
@ S_MOD_TERM_FUNC_POINTERS
S_MOD_TERM_FUNC_POINTERS - Section with only function pointers for termination.
Definition: MachO.h:150
llvm::AsmToken
Target independent representation for an assembler token.
Definition: MCAsmMacro.h:21
llvm::MCDR_DataRegionJT16
@ MCDR_DataRegionJT16
.data_region jt16
Definition: MCDirectives.h:62
llvm::MachO::PLATFORM_IOSSIMULATOR
@ PLATFORM_IOSSIMULATOR
Definition: MachO.h:505
llvm::ARMBuildAttrs::Section
@ Section
Legacy Tags.
Definition: ARMBuildAttributes.h:82
Arg
amdgpu Simplify well known AMD library false FunctionCallee Value * Arg
Definition: AMDGPULibCalls.cpp:187
llvm::MachO::PLATFORM_UNKNOWN
@ PLATFORM_UNKNOWN
Definition: MachO.h:498
llvm::MCDR_DataRegion
@ MCDR_DataRegion
.data_region
Definition: MCDirectives.h:60
llvm::SectionKind::getThreadBSS
static SectionKind getThreadBSS()
Definition: SectionKind.h:206
llvm::Triple::ArchType
ArchType
Definition: Triple.h:46
llvm::MCSectionMachO::getType
MachO::SectionType getType() const
Definition: MCSectionMachO.h:50
llvm::SMLoc
Represents a location in source code.
Definition: SMLoc.h:23
llvm::Triple::TvOS
@ TvOS
Definition: Triple.h:214
E
static GCRegistry::Add< CoreCLRGC > E("coreclr", "CoreCLR-compatible GC")
llvm::MCSA_AltEntry
@ MCSA_AltEntry
.alt_entry (MachO)
Definition: MCDirectives.h:41
Twine.h
MCContext.h
llvm::MCSectionMachO::ParseSectionSpecifier
static Error ParseSectionSpecifier(StringRef Spec, StringRef &Segment, StringRef &Section, unsigned &TAA, bool &TAAParsed, unsigned &StubSize)
Parse the section specifier indicated by "Spec".
Definition: MCSectionMachO.cpp:186
MCSectionMachO.h
MCSymbol.h
llvm::SectionKind::getBSS
static SectionKind getBSS()
Definition: SectionKind.h:209
llvm::MCAsmParser::ExtensionDirectiveHandler
std::pair< MCAsmParserExtension *, DirectiveHandler > ExtensionDirectiveHandler
Definition: MCAsmParser.h:128
B
static GCRegistry::Add< OcamlGC > B("ocaml", "ocaml 3.10-compatible GC")
llvm::Triple::ppc64
@ ppc64
Definition: Triple.h:71
SMLoc.h
llvm::AMDGPU::ElfNote::SectionName
const char SectionName[]
Definition: AMDGPUPTNote.h:24
llvm::MachO::PlatformType
PlatformType
Definition: MachO.h:497
llvm::Triple::DriverKit
@ DriverKit
Definition: Triple.h:216
llvm::VersionTuple
Represents a version number in the form major[.minor[.subminor[.build]]].
Definition: VersionTuple.h:31
Align
uint64_t Align
Definition: ELFObjHandler.cpp:82
llvm::SectionKind::getText
static SectionKind getText()
Definition: SectionKind.h:190
isNot
static bool isNot(const MachineRegisterInfo &MRI, const MachineInstr &MI)
Definition: AMDGPULegalizerInfo.cpp:3196
llvm::MachO::S_LAZY_SYMBOL_POINTERS
@ S_LAZY_SYMBOL_POINTERS
S_LAZY_SYMBOL_POINTERS - Section with lazy symbol pointers.
Definition: MachO.h:141
llvm::lltok::Kind
Kind
Definition: LLToken.h:18
llvm::MCVM_TvOSVersionMin
@ MCVM_TvOSVersionMin
.tvos_version_min
Definition: MCDirectives.h:70
SourceMgr.h
llvm::sys::fs::OF_TextWithCRLF
@ OF_TextWithCRLF
The file should be opened in text mode and use a carriage linefeed '\r '.
Definition: FileSystem.h:770
llvm::MachO::S_NON_LAZY_SYMBOL_POINTERS
@ S_NON_LAZY_SYMBOL_POINTERS
S_NON_LAZY_SYMBOL_POINTERS - Section with non-lazy symbol pointers.
Definition: MachO.h:139
llvm::MCDR_DataRegionJT32
@ MCDR_DataRegionJT32
.data_region jt32
Definition: MCDirectives.h:63
llvm::createDarwinAsmParser
MCAsmParserExtension * createDarwinAsmParser()
Definition: DarwinAsmParser.cpp:1212
llvm::StringRef::empty
constexpr bool empty() const
empty - Check if the string is empty.
Definition: StringRef.h:134
llvm::Triple::MacOSX
@ MacOSX
Definition: Triple.h:197
MCAsmLexer.h
llvm::MachO::S_ATTR_PURE_INSTRUCTIONS
@ S_ATTR_PURE_INSTRUCTIONS
S_ATTR_PURE_INSTRUCTIONS - Section contains only true machine instructions.
Definition: MachO.h:192
llvm::MCAF_SubsectionsViaSymbols
@ MCAF_SubsectionsViaSymbols
.subsections_via_symbols (MachO)
Definition: MCDirectives.h:53
llvm::MachO::S_MOD_INIT_FUNC_POINTERS
@ S_MOD_INIT_FUNC_POINTERS
S_MOD_INIT_FUNC_POINTERS - Section with only function pointers for initialization.
Definition: MachO.h:147
llvm::StringRef::end
iterator end() const
Definition: StringRef.h:113
llvm::MCAsmParserExtension::Initialize
virtual void Initialize(MCAsmParser &Parser)
Initialize the extension for parsing using the given Parser.
Definition: MCAsmParserExtension.cpp:21
parseVersion
static Version parseVersion(StringRef Name)
Definition: CodeViewDebug.cpp:814
move
compiles ldr LCPI1_0 ldr ldr mov lsr tst moveq r1 ldr LCPI1_1 and r0 bx lr It would be better to do something like to fold the shift into the conditional move
Definition: README.txt:546
llvm::MachO::PLATFORM_BRIDGEOS
@ PLATFORM_BRIDGEOS
Definition: MachO.h:503
llvm::MachO::S_4BYTE_LITERALS
@ S_4BYTE_LITERALS
S_4BYTE_LITERALS - Section with 4 byte literals.
Definition: MachO.h:133
assert
assert(ImpDefSCC.getReg()==AMDGPU::SCC &&ImpDefSCC.isDef())
llvm::MachO::S_THREAD_LOCAL_VARIABLES
@ S_THREAD_LOCAL_VARIABLES
S_THREAD_LOCAL_VARIABLES - Section with thread local variable structure data.
Definition: MachO.h:172
llvm::MachO::S_THREAD_LOCAL_REGULAR
@ S_THREAD_LOCAL_REGULAR
S_THREAD_LOCAL_REGULAR - Thread local data section.
Definition: MachO.h:167
llvm::codeview::CompileSym2Flags::EC
@ EC
getOSTypeFromPlatform
static Triple::OSType getOSTypeFromPlatform(MachO::PlatformType Type)
Definition: DarwinAsmParser.cpp:1142
llvm::AsmToken::Comma
@ Comma
Definition: MCAsmMacro.h:49
Triple.h
llvm::StringRef
StringRef - Represent a constant reference to a string, i.e.
Definition: StringRef.h:50
llvm_unreachable
#define llvm_unreachable(msg)
Marks that the current location is not supposed to be reachable.
Definition: ErrorHandling.h:143
llvm::MCAsmParserExtension
Generic interface for extending the MCAsmParser, which is implemented by target and object file assem...
Definition: MCAsmParserExtension.h:24
llvm::objcopy::SymbolFlag::Warning
@ Warning
S
add sub stmia L5 ldr r0 bl L_printf $stub Instead of a and a wouldn t it be better to do three moves *Return an aggregate type is even return S
Definition: README.txt:210
llvm::MCSA_IndirectSymbol
@ MCSA_IndirectSymbol
.indirect_symbol (MachO)
Definition: MCDirectives.h:35
llvm::raw_fd_ostream
A raw_ostream that writes to a file descriptor.
Definition: raw_ostream.h:441
llvm::MachO::S_16BYTE_LITERALS
@ S_16BYTE_LITERALS
S_16BYTE_LITERALS - Section with only 16 byte literals.
Definition: MachO.h:160
llvm::MachO::PLATFORM_TVOS
@ PLATFORM_TVOS
Definition: MachO.h:501
llvm::SectionKind::getData
static SectionKind getData()
Definition: SectionKind.h:213
llvm::Twine
Twine - A lightweight data structure for efficiently representing the concatenation of temporary valu...
Definition: Twine.h:81
llvm::Triple::OSType
OSType
Definition: Triple.h:184
llvm::GraphProgram::Name
Name
Definition: GraphWriter.h:50
llvm::AsmToken::Identifier
@ Identifier
Definition: MCAsmMacro.h:28
MCAsmParserExtension.h
llvm::MachO::PLATFORM_TVOSSIMULATOR
@ PLATFORM_TVOSSIMULATOR
Definition: MachO.h:506
llvm::SMLoc::getPointer
const char * getPointer() const
Definition: SMLoc.h:34
llvm::toString
const char * toString(DWARFSectionKind Kind)
Definition: DWARFUnitIndex.h:67
llvm::MachO::S_THREAD_LOCAL_VARIABLE_POINTERS
@ S_THREAD_LOCAL_VARIABLE_POINTERS
S_THREAD_LOCAL_VARIABLE_POINTERS - Section with pointers to thread local structures.
Definition: MachO.h:175
llvm::SectionName
Definition: DWARFSection.h:21
llvm::Error
Lightweight error class with error context and mandatory checking.
Definition: Error.h:155
llvm::MCSectionMachO
This represents a section on a Mach-O system (used by Mac OS X).
Definition: MCSectionMachO.h:24
llvm::TargetStackID::Value
Value
Definition: TargetFrameLowering.h:27
StringSwitch.h
llvm::MachO::S_THREAD_LOCAL_ZEROFILL
@ S_THREAD_LOCAL_ZEROFILL
S_THREAD_LOCAL_ZEROFILL - Thread local zerofill section.
Definition: MachO.h:169
llvm::MachO::PLATFORM_WATCHOS
@ PLATFORM_WATCHOS
Definition: MachO.h:502
SectionKind.h
llvm::MCDR_DataRegionJT8
@ MCDR_DataRegionJT8
.data_region jt8
Definition: MCDirectives.h:61
SmallVector.h
llvm::SMRange
Represents a range in source code.
Definition: SMLoc.h:48
llvm::AsmToken::getIdentifier
StringRef getIdentifier() const
Get the identifier string for the current token, which should be an identifier or a string.
Definition: MCAsmMacro.h:99
MCStreamer.h
llvm::MachO::PLATFORM_DRIVERKIT
@ PLATFORM_DRIVERKIT
Definition: MachO.h:508
llvm::MCSectionSubPair
std::pair< MCSection *, const MCExpr * > MCSectionSubPair
Definition: MCStreamer.h:66
llvm::sys::fs::OF_Append
@ OF_Append
The file should be opened in append mode.
Definition: FileSystem.h:773
llvm::MachO::S_THREAD_LOCAL_INIT_FUNCTION_POINTERS
@ S_THREAD_LOCAL_INIT_FUNCTION_POINTERS
S_THREAD_LOCAL_INIT_FUNCTION_POINTERS - Section with thread local variable initialization pointers to...
Definition: MachO.h:178
llvm::SMLoc::getFromPointer
static SMLoc getFromPointer(const char *Ptr)
Definition: SMLoc.h:36
llvm::StringSwitch::Default
R Default(T Value)
Definition: StringSwitch.h:183
llvm::StringSwitch
A switch()-like statement whose cases are string literals.
Definition: StringSwitch.h:45
getOSTypeFromMCVM
static Triple::OSType getOSTypeFromMCVM(MCVersionMinType Type)
Definition: DarwinAsmParser.cpp:1106
MachO.h
llvm::AsmToken::String
@ String
Definition: MCAsmMacro.h:29
llvm::AMDGPU::HSAMD::Kernel::Key::Args
constexpr char Args[]
Key for Kernel::Metadata::mArgs.
Definition: AMDGPUMetadata.h:394
raw_ostream.h
llvm::StringRef::begin
iterator begin() const
Definition: StringRef.h:111
llvm::MCDR_DataRegionEnd
@ MCDR_DataRegionEnd
.end_data_region
Definition: MCDirectives.h:64
llvm::Value
LLVM Value Representation.
Definition: Value.h:74
llvm::Directive
Definition: DirectiveEmitter.h:100
llvm::MCExpr
Base class for the full range of assembler expressions which are needed for parsing.
Definition: MCExpr.h:35
llvm::MachO::SectionType
SectionType
These are the section type and attributes fields.
Definition: MachO.h:122