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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 "InputChunks.h"
#include "InputFiles.h"
#include "lld/Common/ErrorHandler.h"
#include "lld/Common/Strings.h"
#define DEBUG_TYPE "lld"
using namespace llvm;
using namespace llvm::wasm;
using namespace lld;
using namespace lld::wasm;
DefinedFunction *WasmSym::CallCtors;
DefinedData *WasmSym::DsoHandle;
DefinedData *WasmSym::DataEnd;
DefinedData *WasmSym::HeapBase;
DefinedData *WasmSym::StackPointer;
bool Symbol::hasOutputIndex() const {
if (auto *F = dyn_cast<DefinedFunction>(this))
if (F->Function)
return F->Function->hasOutputIndex();
return OutputIndex != INVALID_INDEX;
}
uint32_t Symbol::getOutputIndex() const {
if (auto *F = dyn_cast<DefinedFunction>(this))
if (F->Function)
return F->Function->getOutputIndex();
assert(OutputIndex != INVALID_INDEX);
return OutputIndex;
}
InputChunk *Symbol::getChunk() const {
if (auto *F = dyn_cast<DefinedFunction>(this))
return F->Function;
if (auto *G = dyn_cast<DefinedData>(this))
return G->Segment;
return nullptr;
}
void Symbol::setOutputIndex(uint32_t Index) {
DEBUG(dbgs() << "setOutputIndex " << Name << " -> " << Index << "\n");
assert(OutputIndex == INVALID_INDEX);
OutputIndex = Index;
}
bool Symbol::isWeak() const {
return (Flags & WASM_SYMBOL_BINDING_MASK) == WASM_SYMBOL_BINDING_WEAK;
}
bool Symbol::isLocal() const {
return (Flags & WASM_SYMBOL_BINDING_MASK) == WASM_SYMBOL_BINDING_LOCAL;
}
bool Symbol::isHidden() const {
return (Flags & WASM_SYMBOL_VISIBILITY_MASK) == WASM_SYMBOL_VISIBILITY_HIDDEN;
}
void Symbol::setHidden(bool IsHidden) {
DEBUG(dbgs() << "setHidden: " << Name << " -> " << IsHidden << "\n");
Flags &= ~WASM_SYMBOL_VISIBILITY_MASK;
if (IsHidden)
Flags |= WASM_SYMBOL_VISIBILITY_HIDDEN;
else
Flags |= WASM_SYMBOL_VISIBILITY_DEFAULT;
}
uint32_t FunctionSymbol::getTableIndex() const {
if (auto *F = dyn_cast<DefinedFunction>(this))
return F->Function->getTableIndex();
assert(TableIndex != INVALID_INDEX);
return TableIndex;
}
bool FunctionSymbol::hasTableIndex() const {
if (auto *F = dyn_cast<DefinedFunction>(this))
return F->Function->hasTableIndex();
return TableIndex != INVALID_INDEX;
}
void FunctionSymbol::setTableIndex(uint32_t Index) {
// For imports, we set the table index here on the Symbol; for defined
// functions we set the index on the InputFunction so that we don't export
// the same thing twice (keeps the table size down).
if (auto *F = dyn_cast<DefinedFunction>(this)) {
F->Function->setTableIndex(Index);
return;
}
DEBUG(dbgs() << "setTableIndex " << Name << " -> " << Index << "\n");
assert(TableIndex == INVALID_INDEX);
TableIndex = Index;
}
DefinedFunction::DefinedFunction(StringRef Name, uint32_t Flags, InputFile *F,
InputFunction *Function)
: FunctionSymbol(Name, DefinedFunctionKind, Flags, F,
Function ? &Function->Signature : nullptr),
Function(Function) {}
uint32_t DefinedData::getVirtualAddress() const {
DEBUG(dbgs() << "getVirtualAddress: " << getName() << "\n");
return Segment ? Segment->translateVA(VirtualAddress) : VirtualAddress;
}
void DefinedData::setVirtualAddress(uint32_t Value) {
DEBUG(dbgs() << "setVirtualAddress " << Name << " -> " << Value << "\n");
VirtualAddress = Value;
}
std::string lld::toString(const wasm::Symbol &Sym) {
if (Config->Demangle)
if (Optional<std::string> S = demangleItanium(Sym.getName()))
return "`" + *S + "'";
return Sym.getName();
}
std::string lld::toString(wasm::Symbol::Kind Kind) {
switch (Kind) {
case wasm::Symbol::DefinedFunctionKind:
return "DefinedFunction";
case wasm::Symbol::DefinedDataKind:
return "DefinedData";
case wasm::Symbol::UndefinedFunctionKind:
return "UndefinedFunction";
case wasm::Symbol::UndefinedDataKind:
return "UndefinedData";
case wasm::Symbol::LazyKind:
return "LazyKind";
}
llvm_unreachable("Invalid symbol kind!");
}
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