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