BTFDebug.h Source File (original) (raw)

14#ifndef LLVM_LIB_TARGET_BPF_BTFDEBUG_H

15#define LLVM_LIB_TARGET_BPF_BTFDEBUG_H

20#include

21#include

22#include

23#include <unordered_map>

25namespace llvm {

40protected:

46public:

60};

66 bool NeedsFixup;

69public:

75};

100

103 std::vector EnumValues;

104

105public:

112};

113

114

124

125

128 bool HasBitField;

129 std::vector Members;

130

131public:

140};

141

142

145 std::unordered_map<uint32_t, StringRef> FuncArgNames;

146 std::vector Parameters;

147

148public:

150 const std::unordered_map<uint32_t, StringRef> &FuncArgNames);

156};

157

158

168

169

180

181

184 std::string Name;

185 std::vector<std::tuple<uint32_t, const MCSymbol *, uint32_t>> Vars;

186

187public:

193 Vars.push_back(std::make_tuple(Id, Sym, Size));

194 }

195 std::string getName() { return Name; }

198};

199

200

208

209

220

221

224 std::vector EnumValues;

225

226public:

233};

234

244

245

247

249

250

251

252 std::map<uint32_t, uint32_t> OffsetToIdMap;

253

254 std::vectorstd::string Table;

255

256public:

259 std::vectorstd::string &getTable() { return Table; }

260

261

263};

264

265

270

271

279

280

287

288

291 bool SkipInstruction;

292 bool LineInfoGenerated;

295 bool MapDefNotCollected;

297 std::vector<std::unique_ptr> TypeEntries;

298 std::unordered_map<const DIType *, uint32_t> DIToIdMap;

299 std::map<uint32_t, std::vector> FuncInfoTable;

300 std::map<uint32_t, std::vector> LineInfoTable;

301 std::map<uint32_t, std::vector> FieldRelocTable;

303 std::map<std::string, std::unique_ptr, std::less<>>

304 DataSecEntries;

305 std::vector<BTFTypeStruct *> StructTypes;

306 std::map<const GlobalVariable *, std::pair<int64_t, uint32_t>> PatchImms;

308 std::vector<std::pair<const DIDerivedType *, BTFTypeDerived *>>>

309 FixupDerivedTypes;

310 std::set<const Function *>ProtoFunctions;

311

312

313

314

315 uint32_t addType(std::unique_ptr TypeEntry, const DIType *Ty);

316

317 uint32_t addType(std::unique_ptr TypeEntry);

318

319

320

321

322 void visitTypeEntry(const DIType *Ty);

323 void visitTypeEntry(const DIType *Ty, uint32_t &TypeId, bool CheckPointer,

324 bool SeenPointer);

326 void visitSubroutineType(

328 const std::unordered_map<uint32_t, StringRef> &FuncArgNames,

330 void visitFwdDeclType(const DICompositeType *CTy, bool IsUnion,

333 void visitStructType(const DICompositeType *STy, bool IsStruct,

338 bool CheckPointer, bool SeenPointer);

339 void visitMapDefType(const DIType *Ty, uint32_t &TypeId);

340

341

342

343 bool IsForwardDeclCandidate(const DIType *Base);

344

345

346

347 std::string populateFileContent(const DIFile *File);

348

349

352

353

354 void processGlobals(bool ProcessingMapDef);

355

356

357

358 void processGlobalInitializer(const Constant *C);

359

360

361 void processFuncPrototypes(const Function *);

362

363

364 void processDeclAnnotations(DINodeArray Annotations, uint32_t BaseTypeId,

365 int ComponentId);

366

367

370

371

372

373

374

375

376 int genBTFTypeTags(const DIDerivedType *DTy, int BaseTypeId);

377

378

379 void generatePatchImmReloc(const MCSymbol *ORSym, uint32_t RootId,

381

382

383 unsigned populateType(const DIType *Ty);

384

385

386

388

389

390 void emitCommonHeader();

391

392

393 void emitBTFSection();

394

395

396 void emitBTFExtSection();

397

398protected:

399

401

402

404

405public:

407

408

410

411

413 assert(ArrayIndexTypeId);

414 return ArrayIndexTypeId;

415 }

416

417

419

420

422 assert(Ty && "Invalid null Type");

423 assert(DIToIdMap.find(Ty) != DIToIdMap.end() &&

424 "DIType not added in the BDIToIdMap");

425 return DIToIdMap[Ty];

426 }

427

428

430

431

433};

434

435}

436

437#endif

assert(UImm &&(UImm !=~static_cast< T >(0)) &&"Invalid immediate!")

This file defines the StringMap class.

This file contains the layout of .BTF and .BTF.ext ELF sections.

Annotations lets you mark points and ranges inside source code, for tests:

This class is intended to be used as a driving class for all asm writers.

Collect and emit BTF information.

Definition BTFDebug.h:289

void endFunctionImpl(const MachineFunction *MF) override

Post process after all instructions in this function are processed.

void beginInstruction(const MachineInstr *MI) override

Process beginning of an instruction.

bool InstLower(const MachineInstr *MI, MCInst &OutMI)

Emit proper patchable instructions.

size_t addString(StringRef S)

Add string to the string table.

Definition BTFDebug.h:418

uint32_t getArrayIndexTypeId()

Get the special array index type id.

Definition BTFDebug.h:412

uint32_t getTypeId(const DIType *Ty)

Get the type id for a particular DIType.

Definition BTFDebug.h:421

void endModule() override

Complete all the types and emit the BTF sections.

void beginFunctionImpl(const MachineFunction *MF) override

Gather pre-function debug information.

void emitType(MCStreamer &OS) override

Emit types for this BTF type entry.

void completeType(BTFDebug &BDebug) override

Complete BTF type generation after all related DebugInfo types have been visited so their BTF type id...

void addDataSecEntry(uint32_t Id, const MCSymbol *Sym, uint32_t Size)

Definition BTFDebug.h:192

BTFKindDataSec(AsmPrinter *AsmPrt, std::string SecName)

uint32_t getSize() override

Get the size of this BTF type entry.

Definition BTFDebug.h:189

std::string getName()

Definition BTFDebug.h:195

BTFKindVar(StringRef VarName, uint32_t TypeId, uint32_t VarInfo)

void emitType(MCStreamer &OS) override

Emit types for this BTF type entry.

uint32_t getSize() override

Get the size of this BTF type entry.

Definition BTFDebug.h:176

void completeType(BTFDebug &BDebug) override

Complete BTF type generation after all related DebugInfo types have been visited so their BTF type id...

String table.

Definition BTFDebug.h:246

BTFStringTable()

Definition BTFDebug.h:257

uint32_t getSize()

Definition BTFDebug.h:258

uint32_t addString(StringRef S)

Add a string to the string table and returns its offset in the table.

std::vector< std::string > & getTable()

Definition BTFDebug.h:259

BTFTypeArray(uint32_t ElemTypeId, uint32_t NumElems)

void emitType(MCStreamer &OS) override

Emit types for this BTF type entry.

void completeType(BTFDebug &BDebug) override

Represent a BTF array.

uint32_t getSize() override

Get the size of this BTF type entry.

Definition BTFDebug.h:120

uint8_t Kind

Definition BTFDebug.h:41

void setId(uint32_t Id)

Definition BTFDebug.h:49

struct BTF::CommonType BTFType

Definition BTFDebug.h:44

BTFTypeBase()

Definition BTFDebug.h:47

virtual uint32_t getSize()

Get the size of this BTF type entry.

Definition BTFDebug.h:53

virtual void completeType(BTFDebug &BDebug)

Complete BTF type generation after all related DebugInfo types have been visited so their BTF type id...

Definition BTFDebug.h:57

bool IsCompleted

Definition BTFDebug.h:42

uint32_t Id

Definition BTFDebug.h:43

virtual ~BTFTypeBase()=default

virtual void emitType(MCStreamer &OS)

Emit types for this BTF type entry.

uint32_t getId()

Definition BTFDebug.h:50

uint32_t roundupToBytes(uint32_t NumBits)

Definition BTFDebug.h:51

void completeType(BTFDebug &BDebug) override

Complete BTF type generation after all related DebugInfo types have been visited so their BTF type id...

uint32_t getSize() override

Get the size of this BTF type entry.

Definition BTFDebug.h:216

void emitType(MCStreamer &OS) override

Emit types for this BTF type entry.

BTFTypeDeclTag(uint32_t BaseTypeId, int ComponentId, StringRef Tag)

void completeType(BTFDebug &BDebug) override

Complete BTF type generation after all related DebugInfo types have been visited so their BTF type id...

void emitType(MCStreamer &OS) override

Emit types for this BTF type entry.

void setPointeeType(uint32_t PointeeType)

BTFTypeDerived(const DIDerivedType *Ty, unsigned Tag, bool NeedsFixup)

uint32_t getSize() override

Get the size of this BTF type entry.

Definition BTFDebug.h:228

void completeType(BTFDebug &BDebug) override

Complete BTF type generation after all related DebugInfo types have been visited so their BTF type id...

BTFTypeEnum64(const DICompositeType *ETy, uint32_t NumValues, bool IsSigned)

void emitType(MCStreamer &OS) override

Emit types for this BTF type entry.

void completeType(BTFDebug &BDebug) override

Complete BTF type generation after all related DebugInfo types have been visited so their BTF type id...

uint32_t getSize() override

Get the size of this BTF type entry.

Definition BTFDebug.h:107

BTFTypeEnum(const DICompositeType *ETy, uint32_t NumValues, bool IsSigned)

void emitType(MCStreamer &OS) override

Emit types for this BTF type entry.

void completeType(BTFDebug &BDebug) override

Complete BTF type generation after all related DebugInfo types have been visited so their BTF type id...

BTFTypeFloat(uint32_t SizeInBits, StringRef TypeName)

BTFTypeFuncProto(const DISubroutineType *STy, uint32_t NumParams, const std::unordered_map< uint32_t, StringRef > &FuncArgNames)

The Func kind represents both subprogram and pointee of function pointers.

uint32_t getSize() override

Get the size of this BTF type entry.

Definition BTFDebug.h:151

void completeType(BTFDebug &BDebug) override

Complete BTF type generation after all related DebugInfo types have been visited so their BTF type id...

void emitType(MCStreamer &OS) override

Emit types for this BTF type entry.

void emitType(MCStreamer &OS) override

Emit types for this BTF type entry.

BTFTypeFunc(StringRef FuncName, uint32_t ProtoTypeId, uint32_t Scope)

void completeType(BTFDebug &BDebug) override

Complete BTF type generation after all related DebugInfo types have been visited so their BTF type id...

uint32_t getSize() override

Get the size of this BTF type entry.

Definition BTFDebug.h:164

void emitType(MCStreamer &OS) override

Emit types for this BTF type entry.

BTFTypeFwd(StringRef Name, bool IsUnion)

Represent a struct/union forward declaration.

void completeType(BTFDebug &BDebug) override

Complete BTF type generation after all related DebugInfo types have been visited so their BTF type id...

void emitType(MCStreamer &OS) override

Emit types for this BTF type entry.

uint32_t getSize() override

Get the size of this BTF type entry.

Definition BTFDebug.h:95

BTFTypeInt(uint32_t Encoding, uint32_t SizeInBits, uint32_t OffsetInBits, StringRef TypeName)

void completeType(BTFDebug &BDebug) override

Complete BTF type generation after all related DebugInfo types have been visited so their BTF type id...

void emitType(MCStreamer &OS) override

Emit types for this BTF type entry.

uint32_t getSize() override

Get the size of this BTF type entry.

Definition BTFDebug.h:134

BTFTypeStruct(const DICompositeType *STy, bool IsStruct, bool HasBitField, uint32_t NumMembers)

Represent either a struct or a union.

void completeType(BTFDebug &BDebug) override

Complete BTF type generation after all related DebugInfo types have been visited so their BTF type id...

void completeType(BTFDebug &BDebug) override

Complete BTF type generation after all related DebugInfo types have been visited so their BTF type id...

BTFTypeTypeTag(uint32_t NextTypeId, StringRef Tag)

This is an important base class in LLVM.

Basic type, like 'int' or 'float'.

Subprogram description. Uses SubclassData1.

Type array for a subprogram.

DebugHandlerBase(AsmPrinter *A)

Instances of this class represent a single low-level machine instruction.

Streaming machine code generation interface.

MCSymbol - Instances of this class represent a symbol name in the MC file, and MCSymbols are created ...

Representation of each machine instruction.

MachineOperand class - Representation of each machine instruction operand.

StringMap - This is an unconventional map that is specialized for handling keys that are "strings",...

StringRef - Represent a constant reference to a string, i.e.

@ C

The default llvm calling convention, compatible with C.

This is an optimization pass for GlobalISel generic memory operations.

Represent one field relocation.

Definition BTFDebug.h:281

uint32_t RelocKind

What to patch the instruction.

Definition BTFDebug.h:285

const MCSymbol * Label

MCSymbol identifying insn for the reloc.

Definition BTFDebug.h:282

uint32_t TypeID

Type ID.

Definition BTFDebug.h:283

uint32_t OffsetNameOff

The string to traverse types.

Definition BTFDebug.h:284

Represent one func and its type id.

Definition BTFDebug.h:266

uint32_t TypeId

Type id referring to .BTF type section.

Definition BTFDebug.h:268

const MCSymbol * Label

Func MCSymbol.

Definition BTFDebug.h:267

Represent one line info.

Definition BTFDebug.h:272

uint32_t LineOff

line offset in the .BTF string table

Definition BTFDebug.h:275

MCSymbol * Label

MCSymbol identifying insn for the lineinfo.

Definition BTFDebug.h:273

uint32_t ColumnNum

the column number

Definition BTFDebug.h:277

uint32_t FileNameOff

file name offset in the .BTF string table

Definition BTFDebug.h:274

uint32_t LineNum

the line number

Definition BTFDebug.h:276

BTF_KIND_ARRAY is followed by one "struct BTFArray".

The BTF common type definition.