forked from OSchip/llvm-project
115 lines
3.1 KiB
C++
115 lines
3.1 KiB
C++
//===- Symbols.cpp --------------------------------------------------------===//
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//
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// The LLVM Linker
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//
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// This file is distributed under the University of Illinois Open Source
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// License. See LICENSE.TXT for details.
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//
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//===----------------------------------------------------------------------===//
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#include "Symbols.h"
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#include "Config.h"
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#include "InputFiles.h"
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#include "InputSegment.h"
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#include "lld/Common/ErrorHandler.h"
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#include "lld/Common/Strings.h"
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#define DEBUG_TYPE "lld"
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using namespace llvm;
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using namespace lld;
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using namespace lld::wasm;
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uint32_t Symbol::getGlobalIndex() const {
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assert(!Sym->isFunction());
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return Sym->ElementIndex;
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}
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uint32_t Symbol::getFunctionIndex() const {
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assert(Sym->isFunction());
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return Sym->ElementIndex;
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}
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const WasmSignature &Symbol::getFunctionType() const {
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assert(FunctionType != nullptr);
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return *FunctionType;
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}
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uint32_t Symbol::getVirtualAddress() const {
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assert(isGlobal());
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DEBUG(dbgs() << "getVirtualAddress: " << getName() << "\n");
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if (isUndefined())
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return UINT32_MAX;
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if (VirtualAddress.hasValue())
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return VirtualAddress.getValue();
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assert(Sym != nullptr);
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ObjFile *Obj = cast<ObjFile>(File);
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const WasmGlobal &Global =
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Obj->getWasmObj()->globals()[getGlobalIndex() - Obj->NumGlobalImports()];
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assert(Global.Type == llvm::wasm::WASM_TYPE_I32);
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assert(Segment);
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return Segment->translateVA(Global.InitExpr.Value.Int32);
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}
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uint32_t Symbol::getOutputIndex() const {
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if (isUndefined() && isWeak())
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return 0;
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return OutputIndex.getValue();
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}
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void Symbol::setVirtualAddress(uint32_t Value) {
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DEBUG(dbgs() << "setVirtualAddress " << Name << " -> " << Value << "\n");
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assert(!VirtualAddress.hasValue());
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VirtualAddress = Value;
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}
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void Symbol::setOutputIndex(uint32_t Index) {
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DEBUG(dbgs() << "setOutputIndex " << Name << " -> " << Index << "\n");
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assert(!OutputIndex.hasValue());
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OutputIndex = Index;
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}
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void Symbol::setTableIndex(uint32_t Index) {
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DEBUG(dbgs() << "setTableIndex " << Name << " -> " << Index << "\n");
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assert(!TableIndex.hasValue());
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TableIndex = Index;
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}
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void Symbol::update(Kind K, InputFile *F, const WasmSymbol *WasmSym,
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const InputSegment *Seg, const WasmSignature *Sig) {
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SymbolKind = K;
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File = F;
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Sym = WasmSym;
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Segment = Seg;
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FunctionType = Sig;
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}
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bool Symbol::isWeak() const { return Sym && Sym->isWeak(); }
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bool Symbol::isHidden() const { return Sym && Sym->isHidden(); }
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std::string lld::toString(const wasm::Symbol &Sym) {
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if (Config->Demangle)
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if (Optional<std::string> S = demangleItanium(Sym.getName()))
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return "`" + *S + "'";
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return Sym.getName();
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}
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std::string lld::toString(wasm::Symbol::Kind Kind) {
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switch (Kind) {
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case wasm::Symbol::DefinedFunctionKind:
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return "DefinedFunction";
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case wasm::Symbol::DefinedGlobalKind:
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return "DefinedGlobal";
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case wasm::Symbol::UndefinedFunctionKind:
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return "UndefinedFunction";
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case wasm::Symbol::UndefinedGlobalKind:
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return "UndefinedGlobal";
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case wasm::Symbol::LazyKind:
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return "LazyKind";
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}
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llvm_unreachable("Invalid symbol kind!");
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}
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