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//===- InputEvent.h ---------------------------------------------*- C++ -*-===//
//
// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
// See https://llvm.org/LICENSE.txt for license information.
// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
//
//===----------------------------------------------------------------------===//
//
// Wasm events are features that suspend the current execution and transfer the
// control flow to a corresponding handler. Currently the only supported event
// kind is exceptions.
//
//===----------------------------------------------------------------------===//
#ifndef LLD_WASM_INPUT_EVENT_H
#define LLD_WASM_INPUT_EVENT_H
#include "Config.h"
#include "InputFiles.h"
#include "WriterUtils.h"
#include "lld/Common/ErrorHandler.h"
#include "llvm/Object/Wasm.h"
namespace lld {
namespace wasm {
// Represents a single Wasm Event within an input file. These are combined to
// form the final EVENTS section.
class InputEvent {
public:
InputEvent(const WasmSignature &s, const WasmEvent &e, ObjFile *f)
: file(f), event(e), signature(s), live(!config->gcSections) {}
StringRef getName() const { return event.SymbolName; }
const WasmEventType &getType() const { return event.Type; }
uint32_t getEventIndex() const { return eventIndex.getValue(); }
bool hasEventIndex() const { return eventIndex.hasValue(); }
void setEventIndex(uint32_t index) {
assert(!hasEventIndex());
eventIndex = index;
}
ObjFile *file;
WasmEvent event;
const WasmSignature &signature;
bool live = false;
protected:
llvm::Optional<uint32_t> eventIndex;
};
} // namespace wasm
inline std::string toString(const wasm::InputEvent *e) {
return (toString(e->file) + ":(" + e->getName() + ")").str();
}
} // namespace lld
#endif // LLD_WASM_INPUT_EVENT_H
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