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//==-- WebAssemblyTargetStreamer.h - WebAssembly Target Streamer -*- C++ -*-==//
//
// The LLVM Compiler Infrastructure
//
// This file is distributed under the University of Illinois Open Source
// License. See LICENSE.TXT for details.
//
//===----------------------------------------------------------------------===//
///
/// \file
/// \brief This file declares WebAssembly-specific target streamer classes.
/// These are for implementing support for target-specific assembly directives.
///
//===----------------------------------------------------------------------===//
#ifndef LLVM_LIB_TARGET_WEBASSEMBLY_MCTARGETDESC_WEBASSEMBLYTARGETSTREAMER_H
#define LLVM_LIB_TARGET_WEBASSEMBLY_MCTARGETDESC_WEBASSEMBLYTARGETSTREAMER_H
#include "llvm/BinaryFormat/Wasm.h"
#include "llvm/CodeGen/MachineValueType.h"
#include "llvm/MC/MCStreamer.h"
namespace llvm {
class MCELFStreamer;
class MCWasmStreamer;
/// WebAssembly-specific streamer interface, to implement support
/// WebAssembly-specific assembly directives.
class WebAssemblyTargetStreamer : public MCTargetStreamer {
public:
explicit WebAssemblyTargetStreamer(MCStreamer &S);
/// .param
virtual void emitParam(MCSymbol *Symbol, ArrayRef<MVT> Types) = 0;
/// .result
virtual void emitResult(MCSymbol *Symbol, ArrayRef<MVT> Types) = 0;
/// .local
virtual void emitLocal(ArrayRef<MVT> Types) = 0;
/// .globalvar
virtual void emitGlobal(ArrayRef<wasm::Global> Globals) = 0;
/// .stack_pointer
virtual void emitStackPointer(uint32_t Index) = 0;
/// .endfunc
virtual void emitEndFunc() = 0;
/// .functype
virtual void emitIndirectFunctionType(StringRef name,
SmallVectorImpl<MVT> &Params,
SmallVectorImpl<MVT> &Results) {
llvm_unreachable("emitIndirectFunctionType not implemented");
}
/// .indidx
virtual void emitIndIdx(const MCExpr *Value) = 0;
/// .import_global
virtual void emitGlobalImport(StringRef name) = 0;
protected:
void emitValueType(wasm::ValType Type);
};
/// This part is for ascii assembly output
class WebAssemblyTargetAsmStreamer final : public WebAssemblyTargetStreamer {
formatted_raw_ostream &OS;
public:
WebAssemblyTargetAsmStreamer(MCStreamer &S, formatted_raw_ostream &OS);
void emitParam(MCSymbol *Symbol, ArrayRef<MVT> Types) override;
void emitResult(MCSymbol *Symbol, ArrayRef<MVT> Types) override;
void emitLocal(ArrayRef<MVT> Types) override;
void emitGlobal(ArrayRef<wasm::Global> Globals) override;
void emitStackPointer(uint32_t Index) override;
void emitEndFunc() override;
void emitIndirectFunctionType(StringRef name,
SmallVectorImpl<MVT> &Params,
SmallVectorImpl<MVT> &Results) override;
void emitIndIdx(const MCExpr *Value) override;
void emitGlobalImport(StringRef name) override;
};
/// This part is for ELF object output
class WebAssemblyTargetELFStreamer final : public WebAssemblyTargetStreamer {
public:
explicit WebAssemblyTargetELFStreamer(MCStreamer &S);
void emitParam(MCSymbol *Symbol, ArrayRef<MVT> Types) override;
void emitResult(MCSymbol *Symbol, ArrayRef<MVT> Types) override;
void emitLocal(ArrayRef<MVT> Types) override;
void emitGlobal(ArrayRef<wasm::Global> Globals) override;
void emitStackPointer(uint32_t Index) override;
void emitEndFunc() override;
void emitIndirectFunctionType(StringRef name,
SmallVectorImpl<MVT> &Params,
SmallVectorImpl<MVT> &Results) override;
void emitIndIdx(const MCExpr *Value) override;
void emitGlobalImport(StringRef name) override;
};
/// This part is for Wasm object output
class WebAssemblyTargetWasmStreamer final : public WebAssemblyTargetStreamer {
public:
explicit WebAssemblyTargetWasmStreamer(MCStreamer &S);
void emitParam(MCSymbol *Symbol, ArrayRef<MVT> Types) override;
void emitResult(MCSymbol *Symbol, ArrayRef<MVT> Types) override;
void emitLocal(ArrayRef<MVT> Types) override;
void emitGlobal(ArrayRef<wasm::Global> Globals) override;
void emitStackPointer(uint32_t Index) override;
void emitEndFunc() override;
void emitIndirectFunctionType(StringRef name,
SmallVectorImpl<MVT> &Params,
SmallVectorImpl<MVT> &Results) override;
void emitIndIdx(const MCExpr *Value) override;
void emitGlobalImport(StringRef name) override;
};
} // end namespace llvm
#endif
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