vasilito
cb424d7448
verify-patch-sanity.py validates every active recipe .patch has internally- consistent hunk line counts — catching the 'malformed patch at line N' failure at commit/CI/preflight time instead of hours into a cook. This cycle hit that class three times (qtwaylandscanner, sddm, xwayland), each only discovered when cookbook tried to apply the patch. Running it across the repo found 29 latent malformed patches (validated against GNU patch: e.g. relibc/P3-sysv-ipc reproduces 'malformed patch at line 22'). They were harmless only because they sit in vendored recipes (baked, not re- applied) — but would fail on any version-bump re-derivation. --fix recounts the hunk headers (body untouched) and repaired all 29. Wired into build-preflight.sh (Phase 1.0D) and redbear-ci.yml, with a unit test (test-patch-sanity.sh). Skips archived/legacy trees and unvalidatable formats (empty placeholders, bare-@@ git hunks).
145 lines
6.1 KiB
C++
145 lines
6.1 KiB
C++
//===- SymbolTable.h --------------------------------------------*- C++ -*-===//
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//
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// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
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// See https://llvm.org/LICENSE.txt for license information.
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// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
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//
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//===----------------------------------------------------------------------===//
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#ifndef LLD_WASM_SYMBOL_TABLE_H
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#define LLD_WASM_SYMBOL_TABLE_H
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#include "InputFiles.h"
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#include "LTO.h"
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#include "Symbols.h"
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#include "lld/Common/LLVM.h"
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#include "llvm/ADT/CachedHashString.h"
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#include "llvm/ADT/DenseSet.h"
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#include "llvm/BinaryFormat/WasmTraits.h"
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#include <optional>
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namespace lld::wasm {
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class InputSegment;
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// SymbolTable is a bucket of all known symbols, including defined,
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// undefined, or lazy symbols (the last one is symbols in archive
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// files whose archive members are not yet loaded).
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//
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// We put all symbols of all files to a SymbolTable, and the
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// SymbolTable selects the "best" symbols if there are name
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// conflicts. For example, obviously, a defined symbol is better than
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// an undefined symbol. Or, if there's a conflict between a lazy and a
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// undefined, it'll read an archive member to read a real definition
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// to replace the lazy symbol. The logic is implemented in the
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// add*() functions, which are called by input files as they are parsed.
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// There is one add* function per symbol type.
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class SymbolTable {
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public:
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ArrayRef<Symbol *> symbols() const { return symVector; }
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void wrap(Symbol *sym, Symbol *real, Symbol *wrap);
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void addFile(InputFile *file, StringRef symName = {});
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void compileBitcodeFiles();
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Symbol *find(StringRef name);
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void replace(StringRef name, Symbol* sym);
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void trace(StringRef name);
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Symbol *addSharedFunction(StringRef name, uint32_t flags, InputFile *file,
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const WasmSignature *sig);
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Symbol *addSharedData(StringRef name, uint32_t flags, InputFile *file);
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Symbol *addDefinedFunction(StringRef name, uint32_t flags, InputFile *file,
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InputFunction *function);
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Symbol *addDefinedData(StringRef name, uint32_t flags, InputFile *file,
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InputChunk *segment, uint64_t address, uint64_t size);
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Symbol *addDefinedGlobal(StringRef name, uint32_t flags, InputFile *file,
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InputGlobal *g);
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Symbol *addDefinedTag(StringRef name, uint32_t flags, InputFile *file,
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InputTag *t);
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Symbol *addDefinedTable(StringRef name, uint32_t flags, InputFile *file,
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InputTable *t);
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Symbol *addUndefinedFunction(StringRef name,
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std::optional<StringRef> importName,
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std::optional<StringRef> importModule,
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uint32_t flags, InputFile *file,
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const WasmSignature *signature,
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bool isCalledDirectly);
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Symbol *addUndefinedData(StringRef name, uint32_t flags, InputFile *file);
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Symbol *addUndefinedGlobal(StringRef name,
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std::optional<StringRef> importName,
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std::optional<StringRef> importModule,
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uint32_t flags, InputFile *file,
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const WasmGlobalType *type);
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Symbol *addUndefinedTable(StringRef name, std::optional<StringRef> importName,
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std::optional<StringRef> importModule,
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uint32_t flags, InputFile *file,
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const WasmTableType *type);
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Symbol *addUndefinedTag(StringRef name, std::optional<StringRef> importName,
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std::optional<StringRef> importModule, uint32_t flags,
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InputFile *file, const WasmSignature *sig);
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TableSymbol *resolveIndirectFunctionTable(bool required);
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void addLazy(StringRef name, InputFile *f);
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bool addComdat(StringRef name);
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DefinedData *addSyntheticDataSymbol(StringRef name, uint32_t flags);
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DefinedGlobal *addSyntheticGlobal(StringRef name, uint32_t flags,
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InputGlobal *global);
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DefinedFunction *addSyntheticFunction(StringRef name, uint32_t flags,
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InputFunction *function);
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DefinedData *addOptionalDataSymbol(StringRef name, uint64_t value = 0);
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DefinedGlobal *addOptionalGlobalSymbol(StringRef name, InputGlobal *global);
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DefinedTable *addSyntheticTable(StringRef name, uint32_t flags,
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InputTable *global);
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void handleSymbolVariants();
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void handleWeakUndefines();
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DefinedFunction *createUndefinedStub(const WasmSignature &sig);
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private:
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std::pair<Symbol *, bool> insert(StringRef name, const InputFile *file);
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std::pair<Symbol *, bool> insertName(StringRef name);
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bool getFunctionVariant(Symbol* sym, const WasmSignature *sig,
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const InputFile *file, Symbol **out);
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InputFunction *replaceWithUnreachable(Symbol *sym, const WasmSignature &sig,
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StringRef debugName);
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void replaceWithUndefined(Symbol *sym);
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TableSymbol *createDefinedIndirectFunctionTable(StringRef name);
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TableSymbol *createUndefinedIndirectFunctionTable(StringRef name);
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// Maps symbol names to index into the symVector. -1 means that symbols
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// is to not yet in the vector but it should have tracing enabled if it is
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// ever added.
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llvm::DenseMap<llvm::CachedHashStringRef, int> symMap;
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std::vector<Symbol *> symVector;
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// For certain symbols types, e.g. function symbols, we allow for multiple
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// variants of the same symbol with different signatures.
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llvm::DenseMap<llvm::CachedHashStringRef, std::vector<Symbol *>> symVariants;
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llvm::DenseMap<WasmSignature, DefinedFunction *> stubFunctions;
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// Comdat groups define "link once" sections. If two comdat groups have the
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// same name, only one of them is linked, and the other is ignored. This set
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// is used to uniquify them.
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llvm::DenseSet<llvm::CachedHashStringRef> comdatGroups;
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// For LTO.
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std::unique_ptr<BitcodeCompiler> lto;
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};
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extern SymbolTable *symtab;
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} // namespace lld::wasm
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#endif
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