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/Twine.h"
13#include "llvm/BinaryFormat/MachO.h"
14#include "llvm/MC/MCContext.h"
15#include "llvm/MC/MCDirectives.h"
16#include "llvm/MC/MCParser/AsmLexer.h"
17#include "llvm/MC/MCParser/MCAsmParser.h"
18#include "llvm/MC/MCParser/MCAsmParserExtension.h"
19#include "llvm/MC/MCSectionMachO.h"
20#include "llvm/MC/MCStreamer.h"
21#include "llvm/MC/MCSymbol.h"
22#include "llvm/MC/SectionKind.h"
23#include "llvm/Support/Error.h"
24#include "llvm/Support/FileSystem.h"
25#include "llvm/Support/MemoryBuffer.h"
26#include "llvm/Support/SMLoc.h"
27#include "llvm/Support/SourceMgr.h"
28#include "llvm/Support/raw_ostream.h"
29#include "llvm/TargetParser/Triple.h"
30#include <cstddef>
31#include <cstdint>
32#include <string>
33#include <system_error>
34#include <utility>
35
36using namespace llvm;
37
38namespace {
39
40/// Implementation of directive handling which is shared across all
41/// Darwin targets.
42class 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
56public:
57 DarwinAsmParser() = default;
58
59 void Initialize(MCAsmParser &Parser) override {
60 // Call the base implementation.
61 this->MCAsmParserExtension::Initialize(Parser);
62
63 addDirectiveHandler<&DarwinAsmParser::parseDirectiveAltEntry>(Directive: ".alt_entry");
64 addDirectiveHandler<&DarwinAsmParser::parseDirectiveDesc>(Directive: ".desc");
65 addDirectiveHandler<&DarwinAsmParser::parseDirectiveIndirectSymbol>(
66 Directive: ".indirect_symbol");
67 addDirectiveHandler<&DarwinAsmParser::parseDirectiveLsym>(Directive: ".lsym");
68 addDirectiveHandler<&DarwinAsmParser::parseDirectiveSubsectionsViaSymbols>(
69 Directive: ".subsections_via_symbols");
70 addDirectiveHandler<&DarwinAsmParser::parseDirectiveDumpOrLoad>(Directive: ".dump");
71 addDirectiveHandler<&DarwinAsmParser::parseDirectiveDumpOrLoad>(Directive: ".load");
72 addDirectiveHandler<&DarwinAsmParser::parseDirectiveSection>(Directive: ".section");
73 addDirectiveHandler<&DarwinAsmParser::parseDirectivePushSection>(
74 Directive: ".pushsection");
75 addDirectiveHandler<&DarwinAsmParser::parseDirectivePopSection>(
76 Directive: ".popsection");
77 addDirectiveHandler<&DarwinAsmParser::parseDirectivePrevious>(Directive: ".previous");
78 addDirectiveHandler<&DarwinAsmParser::parseDirectiveSecureLogUnique>(
79 Directive: ".secure_log_unique");
80 addDirectiveHandler<&DarwinAsmParser::parseDirectiveSecureLogReset>(
81 Directive: ".secure_log_reset");
82 addDirectiveHandler<&DarwinAsmParser::parseDirectiveTBSS>(Directive: ".tbss");
83 addDirectiveHandler<&DarwinAsmParser::parseDirectiveZerofill>(Directive: ".zerofill");
84
85 addDirectiveHandler<&DarwinAsmParser::parseDirectiveDataRegion>(
86 Directive: ".data_region");
87 addDirectiveHandler<&DarwinAsmParser::parseDirectiveDataRegionEnd>(
88 Directive: ".end_data_region");
89
90 // Special section directives.
91 addDirectiveHandler<&DarwinAsmParser::parseSectionDirectiveBss>(Directive: ".bss");
92 addDirectiveHandler<&DarwinAsmParser::parseSectionDirectiveConst>(Directive: ".const");
93 addDirectiveHandler<&DarwinAsmParser::parseSectionDirectiveConstData>(
94 Directive: ".const_data");
95 addDirectiveHandler<&DarwinAsmParser::parseSectionDirectiveConstructor>(
96 Directive: ".constructor");
97 addDirectiveHandler<&DarwinAsmParser::parseSectionDirectiveCString>(
98 Directive: ".cstring");
99 addDirectiveHandler<&DarwinAsmParser::parseSectionDirectiveData>(Directive: ".data");
100 addDirectiveHandler<&DarwinAsmParser::parseSectionDirectiveDestructor>(
101 Directive: ".destructor");
102 addDirectiveHandler<&DarwinAsmParser::parseSectionDirectiveDyld>(Directive: ".dyld");
103 addDirectiveHandler<&DarwinAsmParser::parseSectionDirectiveFVMLibInit0>(
104 Directive: ".fvmlib_init0");
105 addDirectiveHandler<&DarwinAsmParser::parseSectionDirectiveFVMLibInit1>(
106 Directive: ".fvmlib_init1");
107 addDirectiveHandler<
108 &DarwinAsmParser::parseSectionDirectiveLazySymbolPointers>(
109 Directive: ".lazy_symbol_pointer");
110 addDirectiveHandler<&DarwinAsmParser::parseDirectiveLinkerOption>(
111 Directive: ".linker_option");
112 addDirectiveHandler<&DarwinAsmParser::parseSectionDirectiveLiteral16>(
113 Directive: ".literal16");
114 addDirectiveHandler<&DarwinAsmParser::parseSectionDirectiveLiteral4>(
115 Directive: ".literal4");
116 addDirectiveHandler<&DarwinAsmParser::parseSectionDirectiveLiteral8>(
117 Directive: ".literal8");
118 addDirectiveHandler<&DarwinAsmParser::parseSectionDirectiveModInitFunc>(
119 Directive: ".mod_init_func");
120 addDirectiveHandler<&DarwinAsmParser::parseSectionDirectiveModTermFunc>(
121 Directive: ".mod_term_func");
122 addDirectiveHandler<
123 &DarwinAsmParser::parseSectionDirectiveNonLazySymbolPointers>(
124 Directive: ".non_lazy_symbol_pointer");
125 addDirectiveHandler<
126 &DarwinAsmParser::parseSectionDirectiveThreadLocalVariablePointers>(
127 Directive: ".thread_local_variable_pointer");
128 addDirectiveHandler<&DarwinAsmParser::parseSectionDirectiveObjCCatClsMeth>(
129 Directive: ".objc_cat_cls_meth");
130 addDirectiveHandler<&DarwinAsmParser::parseSectionDirectiveObjCCatInstMeth>(
131 Directive: ".objc_cat_inst_meth");
132 addDirectiveHandler<&DarwinAsmParser::parseSectionDirectiveObjCCategory>(
133 Directive: ".objc_category");
134 addDirectiveHandler<&DarwinAsmParser::parseSectionDirectiveObjCClass>(
135 Directive: ".objc_class");
136 addDirectiveHandler<&DarwinAsmParser::parseSectionDirectiveObjCClassNames>(
137 Directive: ".objc_class_names");
138 addDirectiveHandler<&DarwinAsmParser::parseSectionDirectiveObjCClassVars>(
139 Directive: ".objc_class_vars");
140 addDirectiveHandler<&DarwinAsmParser::parseSectionDirectiveObjCClsMeth>(
141 Directive: ".objc_cls_meth");
142 addDirectiveHandler<&DarwinAsmParser::parseSectionDirectiveObjCClsRefs>(
143 Directive: ".objc_cls_refs");
144 addDirectiveHandler<&DarwinAsmParser::parseSectionDirectiveObjCInstMeth>(
145 Directive: ".objc_inst_meth");
146 addDirectiveHandler<
147 &DarwinAsmParser::parseSectionDirectiveObjCInstanceVars>(
148 Directive: ".objc_instance_vars");
149 addDirectiveHandler<&DarwinAsmParser::parseSectionDirectiveObjCMessageRefs>(
150 Directive: ".objc_message_refs");
151 addDirectiveHandler<&DarwinAsmParser::parseSectionDirectiveObjCMetaClass>(
152 Directive: ".objc_meta_class");
153 addDirectiveHandler<
154 &DarwinAsmParser::parseSectionDirectiveObjCMethVarNames>(
155 Directive: ".objc_meth_var_names");
156 addDirectiveHandler<
157 &DarwinAsmParser::parseSectionDirectiveObjCMethVarTypes>(
158 Directive: ".objc_meth_var_types");
159 addDirectiveHandler<&DarwinAsmParser::parseSectionDirectiveObjCModuleInfo>(
160 Directive: ".objc_module_info");
161 addDirectiveHandler<&DarwinAsmParser::parseSectionDirectiveObjCProtocol>(
162 Directive: ".objc_protocol");
163 addDirectiveHandler<
164 &DarwinAsmParser::parseSectionDirectiveObjCSelectorStrs>(
165 Directive: ".objc_selector_strs");
166 addDirectiveHandler<
167 &DarwinAsmParser::parseSectionDirectiveObjCStringObject>(
168 Directive: ".objc_string_object");
169 addDirectiveHandler<&DarwinAsmParser::parseSectionDirectiveObjCSymbols>(
170 Directive: ".objc_symbols");
171 addDirectiveHandler<&DarwinAsmParser::parseSectionDirectivePICSymbolStub>(
172 Directive: ".picsymbol_stub");
173 addDirectiveHandler<&DarwinAsmParser::parseSectionDirectiveStaticConst>(
174 Directive: ".static_const");
175 addDirectiveHandler<&DarwinAsmParser::parseSectionDirectiveStaticData>(
176 Directive: ".static_data");
177 addDirectiveHandler<&DarwinAsmParser::parseSectionDirectiveSymbolStub>(
178 Directive: ".symbol_stub");
179 addDirectiveHandler<&DarwinAsmParser::parseSectionDirectiveTData>(Directive: ".tdata");
180 addDirectiveHandler<&DarwinAsmParser::parseSectionDirectiveText>(Directive: ".text");
181 addDirectiveHandler<&DarwinAsmParser::parseSectionDirectiveThreadInitFunc>(
182 Directive: ".thread_init_func");
183 addDirectiveHandler<&DarwinAsmParser::parseSectionDirectiveTLV>(Directive: ".tlv");
184
185 addDirectiveHandler<&DarwinAsmParser::parseSectionDirectiveIdent>(Directive: ".ident");
186 addDirectiveHandler<&DarwinAsmParser::parseWatchOSVersionMin>(
187 Directive: ".watchos_version_min");
188 addDirectiveHandler<&DarwinAsmParser::parseTvOSVersionMin>(
189 Directive: ".tvos_version_min");
190 addDirectiveHandler<&DarwinAsmParser::parseIOSVersionMin>(
191 Directive: ".ios_version_min");
192 addDirectiveHandler<&DarwinAsmParser::parseMacOSXVersionMin>(
193 Directive: ".macosx_version_min");
194 addDirectiveHandler<&DarwinAsmParser::parseBuildVersion>(Directive: ".build_version");
195 addDirectiveHandler<&DarwinAsmParser::parseDirectiveCGProfile>(
196 Directive: ".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(Segment: "__DATA", Section: "__bss");
222 }
223
224 bool parseSectionDirectiveConst(StringRef, SMLoc) {
225 return parseSectionSwitch(Segment: "__TEXT", Section: "__const");
226 }
227
228 bool parseSectionDirectiveStaticConst(StringRef, SMLoc) {
229 return parseSectionSwitch(Segment: "__TEXT", Section: "__static_const");
230 }
231
232 bool parseSectionDirectiveCString(StringRef, SMLoc) {
233 return parseSectionSwitch(Segment: "__TEXT",Section: "__cstring",
234 TAA: MachO::S_CSTRING_LITERALS);
235 }
236
237 bool parseSectionDirectiveLiteral4(StringRef, SMLoc) {
238 return parseSectionSwitch(Segment: "__TEXT", Section: "__literal4",
239 TAA: MachO::S_4BYTE_LITERALS, ImplicitAlign: 4);
240 }
241
242 bool parseSectionDirectiveLiteral8(StringRef, SMLoc) {
243 return parseSectionSwitch(Segment: "__TEXT", Section: "__literal8",
244 TAA: MachO::S_8BYTE_LITERALS, ImplicitAlign: 8);
245 }
246
247 bool parseSectionDirectiveLiteral16(StringRef, SMLoc) {
248 return parseSectionSwitch(Segment: "__TEXT",Section: "__literal16",
249 TAA: MachO::S_16BYTE_LITERALS, ImplicitAlign: 16);
250 }
251
252 bool parseSectionDirectiveConstructor(StringRef, SMLoc) {
253 return parseSectionSwitch(Segment: "__TEXT",Section: "__constructor");
254 }
255
256 bool parseSectionDirectiveDestructor(StringRef, SMLoc) {
257 return parseSectionSwitch(Segment: "__TEXT",Section: "__destructor");
258 }
259
260 bool parseSectionDirectiveFVMLibInit0(StringRef, SMLoc) {
261 return parseSectionSwitch(Segment: "__TEXT",Section: "__fvmlib_init0");
262 }
263
264 bool parseSectionDirectiveFVMLibInit1(StringRef, SMLoc) {
265 return parseSectionSwitch(Segment: "__TEXT",Section: "__fvmlib_init1");
266 }
267
268 bool parseSectionDirectiveSymbolStub(StringRef, SMLoc) {
269 return parseSectionSwitch(Segment: "__TEXT",Section: "__symbol_stub",
270 TAA: MachO::S_SYMBOL_STUBS |
271 MachO::S_ATTR_PURE_INSTRUCTIONS,
272 // FIXME: Different on PPC and ARM.
273 ImplicitAlign: 0, StubSize: 16);
274 }
275
276 bool parseSectionDirectivePICSymbolStub(StringRef, SMLoc) {
277 return parseSectionSwitch(Segment: "__TEXT",Section: "__picsymbol_stub",
278 TAA: MachO::S_SYMBOL_STUBS |
279 MachO::S_ATTR_PURE_INSTRUCTIONS, ImplicitAlign: 0, StubSize: 26);
280 }
281
282 bool parseSectionDirectiveData(StringRef, SMLoc) {
283 return parseSectionSwitch(Segment: "__DATA", Section: "__data");
284 }
285
286 bool parseSectionDirectiveStaticData(StringRef, SMLoc) {
287 return parseSectionSwitch(Segment: "__DATA", Section: "__static_data");
288 }
289
290 bool parseSectionDirectiveNonLazySymbolPointers(StringRef, SMLoc) {
291 return parseSectionSwitch(Segment: "__DATA", Section: "__nl_symbol_ptr",
292 TAA: MachO::S_NON_LAZY_SYMBOL_POINTERS, ImplicitAlign: 4);
293 }
294
295 bool parseSectionDirectiveLazySymbolPointers(StringRef, SMLoc) {
296 return parseSectionSwitch(Segment: "__DATA", Section: "__la_symbol_ptr",
297 TAA: MachO::S_LAZY_SYMBOL_POINTERS, ImplicitAlign: 4);
298 }
299
300 bool parseSectionDirectiveThreadLocalVariablePointers(StringRef, SMLoc) {
301 return parseSectionSwitch(Segment: "__DATA", Section: "__thread_ptr",
302 TAA: MachO::S_THREAD_LOCAL_VARIABLE_POINTERS, ImplicitAlign: 4);
303 }
304
305 bool parseSectionDirectiveDyld(StringRef, SMLoc) {
306 return parseSectionSwitch(Segment: "__DATA", Section: "__dyld");
307 }
308
309 bool parseSectionDirectiveModInitFunc(StringRef, SMLoc) {
310 return parseSectionSwitch(Segment: "__DATA", Section: "__mod_init_func",
311 TAA: MachO::S_MOD_INIT_FUNC_POINTERS, ImplicitAlign: 4);
312 }
313
314 bool parseSectionDirectiveModTermFunc(StringRef, SMLoc) {
315 return parseSectionSwitch(Segment: "__DATA", Section: "__mod_term_func",
316 TAA: MachO::S_MOD_TERM_FUNC_POINTERS, ImplicitAlign: 4);
317 }
318
319 bool parseSectionDirectiveConstData(StringRef, SMLoc) {
320 return parseSectionSwitch(Segment: "__DATA", Section: "__const");
321 }
322
323 bool parseSectionDirectiveObjCClass(StringRef, SMLoc) {
324 return parseSectionSwitch(Segment: "__OBJC", Section: "__class",
325 TAA: MachO::S_ATTR_NO_DEAD_STRIP);
326 }
327
328 bool parseSectionDirectiveObjCMetaClass(StringRef, SMLoc) {
329 return parseSectionSwitch(Segment: "__OBJC", Section: "__meta_class",
330 TAA: MachO::S_ATTR_NO_DEAD_STRIP);
331 }
332
333 bool parseSectionDirectiveObjCCatClsMeth(StringRef, SMLoc) {
334 return parseSectionSwitch(Segment: "__OBJC", Section: "__cat_cls_meth",
335 TAA: MachO::S_ATTR_NO_DEAD_STRIP);
336 }
337
338 bool parseSectionDirectiveObjCCatInstMeth(StringRef, SMLoc) {
339 return parseSectionSwitch(Segment: "__OBJC", Section: "__cat_inst_meth",
340 TAA: MachO::S_ATTR_NO_DEAD_STRIP);
341 }
342
343 bool parseSectionDirectiveObjCProtocol(StringRef, SMLoc) {
344 return parseSectionSwitch(Segment: "__OBJC", Section: "__protocol",
345 TAA: MachO::S_ATTR_NO_DEAD_STRIP);
346 }
347
348 bool parseSectionDirectiveObjCStringObject(StringRef, SMLoc) {
349 return parseSectionSwitch(Segment: "__OBJC", Section: "__string_object",
350 TAA: MachO::S_ATTR_NO_DEAD_STRIP);
351 }
352
353 bool parseSectionDirectiveObjCClsMeth(StringRef, SMLoc) {
354 return parseSectionSwitch(Segment: "__OBJC", Section: "__cls_meth",
355 TAA: MachO::S_ATTR_NO_DEAD_STRIP);
356 }
357
358 bool parseSectionDirectiveObjCInstMeth(StringRef, SMLoc) {
359 return parseSectionSwitch(Segment: "__OBJC", Section: "__inst_meth",
360 TAA: MachO::S_ATTR_NO_DEAD_STRIP);
361 }
362
363 bool parseSectionDirectiveObjCClsRefs(StringRef, SMLoc) {
364 return parseSectionSwitch(Segment: "__OBJC", Section: "__cls_refs",
365 TAA: MachO::S_ATTR_NO_DEAD_STRIP |
366 MachO::S_LITERAL_POINTERS, ImplicitAlign: 4);
367 }
368
369 bool parseSectionDirectiveObjCMessageRefs(StringRef, SMLoc) {
370 return parseSectionSwitch(Segment: "__OBJC", Section: "__message_refs",
371 TAA: MachO::S_ATTR_NO_DEAD_STRIP |
372 MachO::S_LITERAL_POINTERS, ImplicitAlign: 4);
373 }
374
375 bool parseSectionDirectiveObjCSymbols(StringRef, SMLoc) {
376 return parseSectionSwitch(Segment: "__OBJC", Section: "__symbols",
377 TAA: MachO::S_ATTR_NO_DEAD_STRIP);
378 }
379
380 bool parseSectionDirectiveObjCCategory(StringRef, SMLoc) {
381 return parseSectionSwitch(Segment: "__OBJC", Section: "__category",
382 TAA: MachO::S_ATTR_NO_DEAD_STRIP);
383 }
384
385 bool parseSectionDirectiveObjCClassVars(StringRef, SMLoc) {
386 return parseSectionSwitch(Segment: "__OBJC", Section: "__class_vars",
387 TAA: MachO::S_ATTR_NO_DEAD_STRIP);
388 }
389
390 bool parseSectionDirectiveObjCInstanceVars(StringRef, SMLoc) {
391 return parseSectionSwitch(Segment: "__OBJC", Section: "__instance_vars",
392 TAA: MachO::S_ATTR_NO_DEAD_STRIP);
393 }
394
395 bool parseSectionDirectiveObjCModuleInfo(StringRef, SMLoc) {
396 return parseSectionSwitch(Segment: "__OBJC", Section: "__module_info",
397 TAA: MachO::S_ATTR_NO_DEAD_STRIP);
398 }
399
400 bool parseSectionDirectiveObjCClassNames(StringRef, SMLoc) {
401 return parseSectionSwitch(Segment: "__TEXT", Section: "__cstring",
402 TAA: MachO::S_CSTRING_LITERALS);
403 }
404
405 bool parseSectionDirectiveObjCMethVarTypes(StringRef, SMLoc) {
406 return parseSectionSwitch(Segment: "__TEXT", Section: "__cstring",
407 TAA: MachO::S_CSTRING_LITERALS);
408 }
409
410 bool parseSectionDirectiveObjCMethVarNames(StringRef, SMLoc) {
411 return parseSectionSwitch(Segment: "__TEXT", Section: "__cstring",
412 TAA: MachO::S_CSTRING_LITERALS);
413 }
414
415 bool parseSectionDirectiveObjCSelectorStrs(StringRef, SMLoc) {
416 return parseSectionSwitch(Segment: "__OBJC", Section: "__selector_strs",
417 TAA: MachO::S_CSTRING_LITERALS);
418 }
419
420 bool parseSectionDirectiveTData(StringRef, SMLoc) {
421 return parseSectionSwitch(Segment: "__DATA", Section: "__thread_data",
422 TAA: MachO::S_THREAD_LOCAL_REGULAR);
423 }
424
425 bool parseSectionDirectiveText(StringRef, SMLoc) {
426 return parseSectionSwitch(Segment: "__TEXT", Section: "__text",
427 TAA: MachO::S_ATTR_PURE_INSTRUCTIONS);
428 }
429
430 bool parseSectionDirectiveTLV(StringRef, SMLoc) {
431 return parseSectionSwitch(Segment: "__DATA", Section: "__thread_vars",
432 TAA: MachO::S_THREAD_LOCAL_VARIABLES);
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(Segment: "__DATA", Section: "__thread_init",
443 TAA: MachO::S_THREAD_LOCAL_INIT_FUNCTION_POINTERS);
444 }
445
446 bool parseWatchOSVersionMin(StringRef Directive, SMLoc Loc) {
447 return parseVersionMin(Directive, Loc, Type: MCVM_WatchOSVersionMin);
448 }
449 bool parseTvOSVersionMin(StringRef Directive, SMLoc Loc) {
450 return parseVersionMin(Directive, Loc, Type: MCVM_TvOSVersionMin);
451 }
452 bool parseIOSVersionMin(StringRef Directive, SMLoc Loc) {
453 return parseVersionMin(Directive, Loc, Type: MCVM_IOSVersionMin);
454 }
455 bool parseMacOSXVersionMin(StringRef Directive, SMLoc Loc) {
456 return parseVersionMin(Directive, Loc, Type: 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
474bool DarwinAsmParser::parseSectionSwitch(StringRef Segment, StringRef Section,
475 unsigned TAA, unsigned Alignment,
476 unsigned StubSize) {
477 if (getLexer().isNot(K: AsmToken::EndOfStatement))
478 return TokError(Msg: "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(Section: getContext().getMachOSection(
484 Segment, Section, TypeAndAttributes: TAA, Reserved2: StubSize,
485 K: isText ? SectionKind::getText() : SectionKind::getData()));
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(Alignment: Align(Alignment));
497
498 return false;
499}
500
501/// parseDirectiveAltEntry
502/// ::= .alt_entry identifier
503bool DarwinAsmParser::parseDirectiveAltEntry(StringRef, SMLoc) {
504 StringRef Name;
505 if (getParser().parseIdentifier(Res&: Name))
506 return TokError(Msg: "expected identifier in directive");
507
508 // Look up symbol.
509 MCSymbol *Sym = getContext().getOrCreateSymbol(Name);
510
511 if (Sym->isDefined())
512 return TokError(Msg: ".alt_entry must preceed symbol definition");
513
514 if (!getStreamer().emitSymbolAttribute(Symbol: Sym, Attribute: MCSA_AltEntry))
515 return TokError(Msg: "unable to emit symbol attribute");
516
517 Lex();
518 return false;
519}
520
521/// parseDirectiveDesc
522/// ::= .desc identifier , expression
523bool DarwinAsmParser::parseDirectiveDesc(StringRef, SMLoc) {
524 StringRef Name;
525 if (getParser().parseIdentifier(Res&: Name))
526 return TokError(Msg: "expected identifier in directive");
527
528 // Handle the identifier as the key symbol.
529 MCSymbol *Sym = getContext().getOrCreateSymbol(Name);
530
531 if (getLexer().isNot(K: AsmToken::Comma))
532 return TokError(Msg: "unexpected token in '.desc' directive");
533 Lex();
534
535 int64_t DescValue;
536 if (getParser().parseAbsoluteExpression(Res&: DescValue))
537 return true;
538
539 if (getLexer().isNot(K: AsmToken::EndOfStatement))
540 return TokError(Msg: "unexpected token in '.desc' directive");
541
542 Lex();
543
544 // Set the n_desc field of this Symbol to this DescValue
545 getStreamer().emitSymbolDesc(Symbol: Sym, DescValue);
546
547 return false;
548}
549
550/// parseDirectiveIndirectSymbol
551/// ::= .indirect_symbol identifier
552bool DarwinAsmParser::parseDirectiveIndirectSymbol(StringRef, SMLoc Loc) {
553 const MCSectionMachO *Current = static_cast<const MCSectionMachO *>(
554 getStreamer().getCurrentSectionOnly());
555 MachO::SectionType SectionType = Current->getType();
556 if (SectionType != MachO::S_NON_LAZY_SYMBOL_POINTERS &&
557 SectionType != MachO::S_LAZY_SYMBOL_POINTERS &&
558 SectionType != MachO::S_THREAD_LOCAL_VARIABLE_POINTERS &&
559 SectionType != MachO::S_SYMBOL_STUBS)
560 return Error(L: Loc, Msg: "indirect symbol not in a symbol pointer or stub "
561 "section");
562
563 StringRef Name;
564 if (getParser().parseIdentifier(Res&: Name))
565 return TokError(Msg: "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(Msg: "non-local symbol required in directive");
572
573 if (!getStreamer().emitSymbolAttribute(Symbol: Sym, Attribute: MCSA_IndirectSymbol))
574 return TokError(Msg: "unable to emit indirect symbol attribute for: " + Name);
575
576 if (getLexer().isNot(K: AsmToken::EndOfStatement))
577 return TokError(Msg: "unexpected token in '.indirect_symbol' directive");
578
579 Lex();
580
581 return false;
582}
583
584/// parseDirectiveDumpOrLoad
585/// ::= ( .dump | .load ) "filename"
586bool DarwinAsmParser::parseDirectiveDumpOrLoad(StringRef Directive,
587 SMLoc IDLoc) {
588 bool IsDump = Directive == ".dump";
589 if (getLexer().isNot(K: AsmToken::String))
590 return TokError(Msg: "expected string in '.dump' or '.load' directive");
591
592 Lex();
593
594 if (getLexer().isNot(K: AsmToken::EndOfStatement))
595 return TokError(Msg: "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(L: IDLoc, Msg: "ignoring directive .dump for now");
603 else
604 return Warning(L: IDLoc, Msg: "ignoring directive .load for now");
605}
606
607/// ParseDirectiveLinkerOption
608/// ::= .linker_option "string" ( , "string" )*
609bool DarwinAsmParser::parseDirectiveLinkerOption(StringRef IDVal, SMLoc) {
610 SmallVector<std::string, 4> Args;
611 while (true) {
612 if (getLexer().isNot(K: AsmToken::String))
613 return TokError(Msg: "expected string in '" + Twine(IDVal) + "' directive");
614
615 std::string Data;
616 if (getParser().parseEscapedString(Data))
617 return true;
618
619 Args.push_back(Elt: Data);
620
621 if (getLexer().is(K: AsmToken::EndOfStatement))
622 break;
623
624 if (getLexer().isNot(K: AsmToken::Comma))
625 return TokError(Msg: "unexpected token in '" + Twine(IDVal) + "' directive");
626 Lex();
627 }
628
629 getStreamer().emitLinkerOptions(Kind: Args);
630 return false;
631}
632
633/// parseDirectiveLsym
634/// ::= .lsym identifier , expression
635bool DarwinAsmParser::parseDirectiveLsym(StringRef, SMLoc) {
636 StringRef Name;
637 if (getParser().parseIdentifier(Res&: Name))
638 return TokError(Msg: "expected identifier in directive");
639
640 // Handle the identifier as the key symbol.
641 MCSymbol *Sym = getContext().getOrCreateSymbol(Name);
642
643 if (getLexer().isNot(K: AsmToken::Comma))
644 return TokError(Msg: "unexpected token in '.lsym' directive");
645 Lex();
646
647 const MCExpr *Value;
648 if (getParser().parseExpression(Res&: Value))
649 return true;
650
651 if (getLexer().isNot(K: AsmToken::EndOfStatement))
652 return TokError(Msg: "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(Msg: "directive '.lsym' is unsupported");
661}
662
663/// parseDirectiveSection:
664/// ::= .section identifier (',' identifier)*
665bool DarwinAsmParser::parseDirectiveSection(StringRef, SMLoc) {
666 SMLoc Loc = getLexer().getLoc();
667
668 StringRef SectionName;
669 if (getParser().parseIdentifier(Res&: SectionName))
670 return Error(L: Loc, Msg: "expected identifier after '.section' directive");
671
672 // Verify there is a following comma.
673 if (!getLexer().is(K: AsmToken::Comma))
674 return TokError(Msg: "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(first: EOL.begin(), last: EOL.end());
683
684 Lex();
685 if (getLexer().isNot(K: AsmToken::EndOfStatement))
686 return TokError(Msg: "unexpected token in '.section' directive");
687 Lex();
688
689 StringRef Segment, Section;
690 unsigned StubSize;
691 unsigned TAA;
692 bool TAAParsed;
693 if (class Error E = MCSectionMachO::ParseSectionSpecifier(
694 Spec: SectionSpec, Segment, Section, TAA, TAAParsed, StubSize))
695 return Error(L: Loc, Msg: toString(E: 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(S: "__textcoal_nt", Value: "__text")
704 .Case(S: "__const_coal", Value: "__const")
705 .Case(S: "__datacoal_nt", Value: "__data")
706 .Default(Value: Section);
707
708 if (Section != NonCoalSection) {
709 StringRef SectionVal(Loc.getPointer());
710 size_t B = SectionVal.find(C: ',') + 1, E = SectionVal.find(C: ',', From: B);
711 SMLoc BLoc = SMLoc::getFromPointer(Ptr: SectionVal.data() + B);
712 SMLoc ELoc = SMLoc::getFromPointer(Ptr: SectionVal.data() + E);
713 getParser().Warning(L: Loc, Msg: "section \"" + Section + "\" is deprecated",
714 Range: SMRange(BLoc, ELoc));
715 getParser().Note(L: Loc, Msg: "change section name to \"" + NonCoalSection +
716 "\"", Range: SMRange(BLoc, ELoc));
717 }
718 }
719
720 // FIXME: Arch specific.
721 bool isText = Segment == "__TEXT"; // FIXME: Hack.
722 getStreamer().switchSection(Section: getContext().getMachOSection(
723 Segment, Section, TypeAndAttributes: TAA, Reserved2: StubSize,
724 K: isText ? SectionKind::getText() : SectionKind::getData()));
725 return false;
726}
727
728/// ParseDirectivePushSection:
729/// ::= .pushsection identifier (',' identifier)*
730bool 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
743bool DarwinAsmParser::parseDirectivePopSection(StringRef, SMLoc) {
744 if (!getStreamer().popSection())
745 return TokError(Msg: ".popsection without corresponding .pushsection");
746 return false;
747}
748
749/// ParseDirectivePrevious:
750/// ::= .previous
751bool DarwinAsmParser::parseDirectivePrevious(StringRef DirName, SMLoc) {
752 MCSectionSubPair PreviousSection = getStreamer().getPreviousSection();
753 if (!PreviousSection.first)
754 return TokError(Msg: ".previous without corresponding .section");
755 getStreamer().switchSection(Section: PreviousSection.first, Subsec: PreviousSection.second);
756 return false;
757}
758
759/// ParseDirectiveSecureLogUnique
760/// ::= .secure_log_unique ... message ...
761bool DarwinAsmParser::parseDirectiveSecureLogUnique(StringRef, SMLoc IDLoc) {
762 StringRef LogMessage = getParser().parseStringToEndOfStatement();
763 if (getLexer().isNot(K: AsmToken::EndOfStatement))
764 return TokError(Msg: "unexpected token in '.secure_log_unique' directive");
765
766 if (getContext().getSecureLogUsed())
767 return Error(L: IDLoc, Msg: ".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(L: IDLoc, Msg: ".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 args&: SecureLogFile, args&: EC, args: sys::fs::OF_Append | sys::fs::OF_TextWithCRLF);
781 if (EC)
782 return Error(L: IDLoc, Msg: 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(Loc: IDLoc);
790 *OS << getSourceManager().getBufferInfo(i: CurBuf).Buffer->getBufferIdentifier()
791 << ":" << getSourceManager().FindLineNumber(Loc: IDLoc, BufferID: CurBuf) << ":"
792 << LogMessage + "\n";
793
794 getContext().setSecureLogUsed(true);
795
796 return false;
797}
798
799/// ParseDirectiveSecureLogReset
800/// ::= .secure_log_reset
801bool DarwinAsmParser::parseDirectiveSecureLogReset(StringRef, SMLoc IDLoc) {
802 if (getLexer().isNot(K: AsmToken::EndOfStatement))
803 return TokError(Msg: "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
814bool DarwinAsmParser::parseDirectiveSubsectionsViaSymbols(StringRef, SMLoc) {
815 if (getLexer().isNot(K: AsmToken::EndOfStatement))
816 return TokError(Msg: "unexpected token in '.subsections_via_symbols' directive");
817
818 Lex();
819
820 getStreamer().emitSubsectionsViaSymbols();
821
822 return false;
823}
824
825/// ParseDirectiveTBSS
826/// ::= .tbss identifier, size, align
827bool DarwinAsmParser::parseDirectiveTBSS(StringRef, SMLoc) {
828 SMLoc IDLoc = getLexer().getLoc();
829 StringRef Name;
830 if (getParser().parseIdentifier(Res&: Name))
831 return TokError(Msg: "expected identifier in directive");
832
833 // Handle the identifier as the key symbol.
834 MCSymbol *Sym = getContext().getOrCreateSymbol(Name);
835
836 if (getLexer().isNot(K: AsmToken::Comma))
837 return TokError(Msg: "unexpected token in directive");
838 Lex();
839
840 int64_t Size;
841 SMLoc SizeLoc = getLexer().getLoc();
842 if (getParser().parseAbsoluteExpression(Res&: Size))
843 return true;
844
845 int64_t Pow2Alignment = 0;
846 SMLoc Pow2AlignmentLoc;
847 if (getLexer().is(K: AsmToken::Comma)) {
848 Lex();
849 Pow2AlignmentLoc = getLexer().getLoc();
850 if (getParser().parseAbsoluteExpression(Res&: Pow2Alignment))
851 return true;
852 }
853
854 if (getLexer().isNot(K: AsmToken::EndOfStatement))
855 return TokError(Msg: "unexpected token in '.tbss' directive");
856
857 Lex();
858
859 if (Size < 0)
860 return Error(L: SizeLoc, Msg: "invalid '.tbss' directive size, can't be less than"
861 "zero");
862
863 // FIXME: Diagnose overflow.
864 if (Pow2Alignment < 0)
865 return Error(L: Pow2AlignmentLoc, Msg: "invalid '.tbss' alignment, can't be less"
866 "than zero");
867
868 if (!Sym->isUndefined())
869 return Error(L: IDLoc, Msg: "invalid symbol redefinition");
870
871 getStreamer().emitTBSSSymbol(
872 Section: getContext().getMachOSection(Segment: "__DATA", Section: "__thread_bss",
873 TypeAndAttributes: MachO::S_THREAD_LOCAL_ZEROFILL, Reserved2: 0,
874 K: SectionKind::getThreadBSS()),
875 Symbol: Sym, Size, ByteAlignment: Align(1ULL << Pow2Alignment));
876
877 return false;
878}
879
880/// ParseDirectiveZerofill
881/// ::= .zerofill segname , sectname [, identifier , size_expression [
882/// , align_expression ]]
883bool DarwinAsmParser::parseDirectiveZerofill(StringRef, SMLoc) {
884 StringRef Segment;
885 if (getParser().parseIdentifier(Res&: Segment))
886 return TokError(Msg: "expected segment name after '.zerofill' directive");
887
888 if (getLexer().isNot(K: AsmToken::Comma))
889 return TokError(Msg: "unexpected token in directive");
890 Lex();
891
892 StringRef Section;
893 SMLoc SectionLoc = getLexer().getLoc();
894 if (getParser().parseIdentifier(Res&: Section))
895 return TokError(Msg: "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(K: AsmToken::EndOfStatement)) {
901 // Create the zerofill section but no symbol
902 getStreamer().emitZerofill(
903 Section: getContext().getMachOSection(Segment, Section, TypeAndAttributes: MachO::S_ZEROFILL, Reserved2: 0,
904 K: SectionKind::getBSS()),
905 /*Symbol=*/nullptr, /*Size=*/0, ByteAlignment: Align(1), Loc: SectionLoc);
906 return false;
907 }
908
909 if (getLexer().isNot(K: AsmToken::Comma))
910 return TokError(Msg: "unexpected token in directive");
911 Lex();
912
913 SMLoc IDLoc = getLexer().getLoc();
914 StringRef IDStr;
915 if (getParser().parseIdentifier(Res&: IDStr))
916 return TokError(Msg: "expected identifier in directive");
917
918 // handle the identifier as the key symbol.
919 MCSymbol *Sym = getContext().getOrCreateSymbol(Name: IDStr);
920
921 if (getLexer().isNot(K: AsmToken::Comma))
922 return TokError(Msg: "unexpected token in directive");
923 Lex();
924
925 int64_t Size;
926 SMLoc SizeLoc = getLexer().getLoc();
927 if (getParser().parseAbsoluteExpression(Res&: Size))
928 return true;
929
930 int64_t Pow2Alignment = 0;
931 SMLoc Pow2AlignmentLoc;
932 if (getLexer().is(K: AsmToken::Comma)) {
933 Lex();
934 Pow2AlignmentLoc = getLexer().getLoc();
935 if (getParser().parseAbsoluteExpression(Res&: Pow2Alignment))
936 return true;
937 }
938
939 if (getLexer().isNot(K: AsmToken::EndOfStatement))
940 return TokError(Msg: "unexpected token in '.zerofill' directive");
941
942 Lex();
943
944 if (Size < 0)
945 return Error(L: SizeLoc, Msg: "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(L: Pow2AlignmentLoc, Msg: "invalid '.zerofill' directive alignment, "
953 "can't be less than zero");
954
955 if (!Sym->isUndefined())
956 return Error(L: IDLoc, Msg: "invalid symbol redefinition");
957
958 // Create the zerofill Symbol with Size and Pow2Alignment
959 //
960 // FIXME: Arch specific.
961 getStreamer().emitZerofill(
962 Section: getContext().getMachOSection(Segment, Section, TypeAndAttributes: MachO::S_ZEROFILL, Reserved2: 0,
963 K: SectionKind::getBSS()),
964 Symbol: Sym, Size, ByteAlignment: Align(1ULL << Pow2Alignment), Loc: SectionLoc);
965
966 return false;
967}
968
969/// ParseDirectiveDataRegion
970/// ::= .data_region [ ( jt8 | jt16 | jt32 ) ]
971bool DarwinAsmParser::parseDirectiveDataRegion(StringRef, SMLoc) {
972 if (getLexer().is(K: AsmToken::EndOfStatement)) {
973 Lex();
974 getStreamer().emitDataRegion(Kind: MCDR_DataRegion);
975 return false;
976 }
977 StringRef RegionType;
978 SMLoc Loc = getParser().getTok().getLoc();
979 if (getParser().parseIdentifier(Res&: RegionType))
980 return TokError(Msg: "expected region type after '.data_region' directive");
981 int Kind = StringSwitch<int>(RegionType)
982 .Case(S: "jt8", Value: MCDR_DataRegionJT8)
983 .Case(S: "jt16", Value: MCDR_DataRegionJT16)
984 .Case(S: "jt32", Value: MCDR_DataRegionJT32)
985 .Default(Value: -1);
986 if (Kind == -1)
987 return Error(L: Loc, Msg: "unknown region type in '.data_region' directive");
988 Lex();
989
990 getStreamer().emitDataRegion(Kind: (MCDataRegionType)Kind);
991 return false;
992}
993
994/// ParseDirectiveDataRegionEnd
995/// ::= .end_data_region
996bool DarwinAsmParser::parseDirectiveDataRegionEnd(StringRef, SMLoc) {
997 if (getLexer().isNot(K: AsmToken::EndOfStatement))
998 return TokError(Msg: "unexpected token in '.end_data_region' directive");
999
1000 Lex();
1001 getStreamer().emitDataRegion(Kind: MCDR_DataRegionEnd);
1002 return false;
1003}
1004
1005static bool isSDKVersionToken(const AsmToken &Tok) {
1006 return Tok.is(K: AsmToken::Identifier) && Tok.getIdentifier() == "sdk_version";
1007}
1008
1009/// parseMajorMinorVersionComponent ::= major, minor
1010bool DarwinAsmParser::parseMajorMinorVersionComponent(unsigned *Major,
1011 unsigned *Minor,
1012 const char *VersionName) {
1013 // Get the major version number.
1014 if (getLexer().isNot(K: AsmToken::Integer))
1015 return TokError(Msg: 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(Msg: Twine("invalid ") + VersionName + " major version number");
1020 *Major = (unsigned)MajorVal;
1021 Lex();
1022 if (getLexer().isNot(K: AsmToken::Comma))
1023 return TokError(Msg: Twine(VersionName) +
1024 " minor version number required, comma expected");
1025 Lex();
1026 // Get the minor version number.
1027 if (getLexer().isNot(K: AsmToken::Integer))
1028 return TokError(Msg: 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(Msg: Twine("invalid ") + VersionName + " minor version number");
1033 *Minor = MinorVal;
1034 Lex();
1035 return false;
1036}
1037
1038/// parseOptionalTrailingVersionComponent ::= , version_number
1039bool DarwinAsmParser::parseOptionalTrailingVersionComponent(
1040 unsigned *Component, const char *ComponentName) {
1041 assert(getLexer().is(AsmToken::Comma) && "comma expected");
1042 Lex();
1043 if (getLexer().isNot(K: AsmToken::Integer))
1044 return TokError(Msg: Twine("invalid ") + ComponentName +
1045 " version number, integer expected");
1046 int64_t Val = getLexer().getTok().getIntVal();
1047 if (Val > 255 || Val < 0)
1048 return TokError(Msg: Twine("invalid ") + ComponentName + " version number");
1049 *Component = Val;
1050 Lex();
1051 return false;
1052}
1053
1054/// parseVersion ::= parseMajorMinorVersionComponent
1055/// parseOptionalTrailingVersionComponent
1056bool DarwinAsmParser::parseVersion(unsigned *Major, unsigned *Minor,
1057 unsigned *Update) {
1058 if (parseMajorMinorVersionComponent(Major, Minor, VersionName: "OS"))
1059 return true;
1060
1061 // Get the update level, if specified
1062 *Update = 0;
1063 if (getLexer().is(K: AsmToken::EndOfStatement) ||
1064 isSDKVersionToken(Tok: getLexer().getTok()))
1065 return false;
1066 if (getLexer().isNot(K: AsmToken::Comma))
1067 return TokError(Msg: "invalid OS update specifier, comma expected");
1068 if (parseOptionalTrailingVersionComponent(Component: Update, ComponentName: "OS update"))
1069 return true;
1070 return false;
1071}
1072
1073bool DarwinAsmParser::parseSDKVersion(VersionTuple &SDKVersion) {
1074 assert(isSDKVersionToken(getLexer().getTok()) && "expected sdk_version");
1075 Lex();
1076 unsigned Major, Minor;
1077 if (parseMajorMinorVersionComponent(Major: &Major, Minor: &Minor, VersionName: "SDK"))
1078 return true;
1079 SDKVersion = VersionTuple(Major, Minor);
1080
1081 // Get the subminor version, if specified.
1082 if (getLexer().is(K: AsmToken::Comma)) {
1083 unsigned Subminor;
1084 if (parseOptionalTrailingVersionComponent(Component: &Subminor, ComponentName: "SDK subminor"))
1085 return true;
1086 SDKVersion = VersionTuple(Major, Minor, Subminor);
1087 }
1088 return false;
1089}
1090
1091void 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(L: Loc, Msg: Twine(Directive) +
1096 (Arg.empty() ? Twine() : Twine(' ') + Arg) +
1097 " used while targeting " + Target.getOSName());
1098
1099 if (LastVersionDirective.isValid()) {
1100 Warning(L: Loc, Msg: "overriding previous version directive");
1101 Note(L: LastVersionDirective, Msg: "previous definition is here");
1102 }
1103 LastVersionDirective = Loc;
1104}
1105
1106static Triple::OSType getOSTypeFromMCVM(MCVersionMinType Type) {
1107 switch (Type) {
1108 case MCVM_WatchOSVersionMin: return Triple::WatchOS;
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
1121bool DarwinAsmParser::parseVersionMin(StringRef Directive, SMLoc Loc,
1122 MCVersionMinType Type) {
1123 unsigned Major;
1124 unsigned Minor;
1125 unsigned Update;
1126 if (parseVersion(Major: &Major, Minor: &Minor, Update: &Update))
1127 return true;
1128
1129 VersionTuple SDKVersion;
1130 if (isSDKVersionToken(Tok: getLexer().getTok()) && parseSDKVersion(SDKVersion))
1131 return true;
1132
1133 if (parseEOL())
1134 return addErrorSuffix(Suffix: Twine(" in '") + Directive + "' directive");
1135
1136 Triple::OSType ExpectedOS = getOSTypeFromMCVM(Type);
1137 checkVersion(Directive, Arg: StringRef(), Loc, ExpectedOS);
1138 getStreamer().emitVersionMin(Type, Major, Minor, Update, SDKVersion);
1139 return false;
1140}
1141
1142static Triple::OSType getOSTypeFromPlatform(MachO::PlatformType Type) {
1143 switch (Type) {
1144 case MachO::PLATFORM_UNKNOWN: /* silence warning */
1145 break;
1146 case MachO::PLATFORM_MACOS: return Triple::MacOSX;
1147 case MachO::PLATFORM_IOS: return Triple::IOS;
1148 case MachO::PLATFORM_TVOS: return Triple::TvOS;
1149 case MachO::PLATFORM_WATCHOS: return Triple::WatchOS;
1150 case MachO::PLATFORM_XROS: return Triple::XROS;
1151 case MachO::PLATFORM_BRIDGEOS: /* silence warning */ break;
1152 case MachO::PLATFORM_DRIVERKIT:
1153 return Triple::DriverKit;
1154 case MachO::PLATFORM_MACCATALYST: return Triple::IOS;
1155 case MachO::PLATFORM_IOSSIMULATOR: /* silence warning */ break;
1156 case MachO::PLATFORM_TVOSSIMULATOR: /* silence warning */ break;
1157 case MachO::PLATFORM_WATCHOSSIMULATOR: /* silence warning */ break;
1158 case MachO::PLATFORM_XROS_SIMULATOR: /* silence warning */ break;
1159 }
1160 llvm_unreachable("Invalid mach-o platform type");
1161}
1162
1163/// parseBuildVersion
1164/// ::= .build_version (macos|ios|tvos|watchos), parseVersion parseSDKVersion
1165bool DarwinAsmParser::parseBuildVersion(StringRef Directive, SMLoc Loc) {
1166 StringRef PlatformName;
1167 SMLoc PlatformLoc = getTok().getLoc();
1168 if (getParser().parseIdentifier(Res&: PlatformName))
1169 return TokError(Msg: "platform name expected");
1170
1171 unsigned Platform = StringSwitch<unsigned>(PlatformName)
1172#define PLATFORM(platform, id, name, build_name, target, tapi_target, \
1173 marketing) \
1174 .Case(#build_name, MachO::PLATFORM_##platform)
1175#include "llvm/BinaryFormat/MachO.def"
1176 .Default(Value: MachO::PLATFORM_UNKNOWN);
1177
1178 if (Platform == MachO::PLATFORM_UNKNOWN)
1179 return Error(L: PlatformLoc, Msg: "unknown platform name");
1180
1181 if (getLexer().isNot(K: AsmToken::Comma))
1182 return TokError(Msg: "version number required, comma expected");
1183 Lex();
1184
1185 unsigned Major;
1186 unsigned Minor;
1187 unsigned Update;
1188 if (parseVersion(Major: &Major, Minor: &Minor, Update: &Update))
1189 return true;
1190
1191 VersionTuple SDKVersion;
1192 if (isSDKVersionToken(Tok: getLexer().getTok()) && parseSDKVersion(SDKVersion))
1193 return true;
1194
1195 if (parseEOL())
1196 return addErrorSuffix(Suffix: " in '.build_version' directive");
1197
1198 Triple::OSType ExpectedOS
1199 = getOSTypeFromPlatform(Type: (MachO::PlatformType)Platform);
1200 checkVersion(Directive, Arg: PlatformName, Loc, ExpectedOS);
1201 getStreamer().emitBuildVersion(Platform, Major, Minor, Update, SDKVersion);
1202 return false;
1203}
1204
1205/// parseDirectiveCGProfile
1206/// ::= .cg_profile from, to, count
1207bool DarwinAsmParser::parseDirectiveCGProfile(StringRef S, SMLoc Loc) {
1208 return MCAsmParserExtension::parseDirectiveCGProfile(S, Loc);
1209}
1210
1211namespace llvm {
1212
1213MCAsmParserExtension *createDarwinAsmParser() {
1214 return new DarwinAsmParser;
1215}
1216
1217} // end llvm namespace
1218