mirror of
https://github.com/Gericom/teak-llvm.git
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be5e5874f6
Summary: This patch supports `.eventtype` directive printing and parsing in the same syntax with `.functype`. Reviewers: aardappel, sbc100 Subscribers: dschuff, sbc100, jgravelle-google, sunfish, llvm-commits Differential Revision: https://reviews.llvm.org/D55353 llvm-svn: 348818
106 lines
3.7 KiB
C++
106 lines
3.7 KiB
C++
//==-- WebAssemblyTargetStreamer.h - WebAssembly Target Streamer -*- C++ -*-==//
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//
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// The LLVM Compiler Infrastructure
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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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///
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/// \file
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/// This file declares WebAssembly-specific target streamer classes.
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/// These are for implementing support for target-specific assembly directives.
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///
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//===----------------------------------------------------------------------===//
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#ifndef LLVM_LIB_TARGET_WEBASSEMBLY_MCTARGETDESC_WEBASSEMBLYTARGETSTREAMER_H
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#define LLVM_LIB_TARGET_WEBASSEMBLY_MCTARGETDESC_WEBASSEMBLYTARGETSTREAMER_H
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#include "llvm/BinaryFormat/Wasm.h"
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#include "llvm/MC/MCStreamer.h"
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#include "llvm/Support/MachineValueType.h"
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namespace llvm {
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class MCWasmStreamer;
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class MCSymbolWasm;
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/// WebAssembly-specific streamer interface, to implement support
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/// WebAssembly-specific assembly directives.
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class WebAssemblyTargetStreamer : public MCTargetStreamer {
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public:
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explicit WebAssemblyTargetStreamer(MCStreamer &S);
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/// .local
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virtual void emitLocal(ArrayRef<wasm::ValType> Types) = 0;
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/// .endfunc
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virtual void emitEndFunc() = 0;
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/// .functype
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virtual void emitFunctionType(const MCSymbolWasm *Sym) = 0;
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/// .indidx
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virtual void emitIndIdx(const MCExpr *Value) = 0;
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/// .globaltype
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virtual void emitGlobalType(const MCSymbolWasm *Sym) = 0;
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/// .eventtype
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virtual void emitEventType(const MCSymbolWasm *Sym) = 0;
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/// .import_module
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virtual void emitImportModule(const MCSymbolWasm *Sym,
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StringRef ModuleName) = 0;
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protected:
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void emitValueType(wasm::ValType Type);
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};
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/// This part is for ascii assembly output
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class WebAssemblyTargetAsmStreamer final : public WebAssemblyTargetStreamer {
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formatted_raw_ostream &OS;
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void emitSignature(const wasm::WasmSignature *Sig);
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void emitParamList(const wasm::WasmSignature *Sig);
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void emitReturnList(const wasm::WasmSignature *Sig);
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public:
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WebAssemblyTargetAsmStreamer(MCStreamer &S, formatted_raw_ostream &OS);
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void emitLocal(ArrayRef<wasm::ValType> Types) override;
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void emitEndFunc() override;
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void emitFunctionType(const MCSymbolWasm *Sym) override;
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void emitIndIdx(const MCExpr *Value) override;
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void emitGlobalType(const MCSymbolWasm *Sym) override;
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void emitEventType(const MCSymbolWasm *Sym) override;
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void emitImportModule(const MCSymbolWasm *Sym, StringRef ModuleName) override;
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};
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/// This part is for Wasm object output
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class WebAssemblyTargetWasmStreamer final : public WebAssemblyTargetStreamer {
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public:
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explicit WebAssemblyTargetWasmStreamer(MCStreamer &S);
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void emitLocal(ArrayRef<wasm::ValType> Types) override;
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void emitEndFunc() override;
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void emitFunctionType(const MCSymbolWasm *Sym) override {}
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void emitIndIdx(const MCExpr *Value) override;
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void emitGlobalType(const MCSymbolWasm *Sym) override {}
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void emitEventType(const MCSymbolWasm *Sym) override {}
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void emitImportModule(const MCSymbolWasm *Sym,
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StringRef ModuleName) override {}
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};
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/// This part is for null output
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class WebAssemblyTargetNullStreamer final : public WebAssemblyTargetStreamer {
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public:
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explicit WebAssemblyTargetNullStreamer(MCStreamer &S)
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: WebAssemblyTargetStreamer(S) {}
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void emitLocal(ArrayRef<wasm::ValType>) override {}
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void emitEndFunc() override {}
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void emitFunctionType(const MCSymbolWasm *) override {}
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void emitIndIdx(const MCExpr *) override {}
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void emitGlobalType(const MCSymbolWasm *) override {}
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void emitEventType(const MCSymbolWasm *) override {}
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void emitImportModule(const MCSymbolWasm *, StringRef) override {}
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};
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} // end namespace llvm
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#endif
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