| //==-- WebAssemblyTargetStreamer.cpp - WebAssembly Target Streamer Methods --=// |
| // |
| // 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 defines WebAssembly-specific target streamer classes. |
| /// These are for implementing support for target-specific assembly directives. |
| /// |
| //===----------------------------------------------------------------------===// |
| |
| #include "WebAssemblyTargetStreamer.h" |
| #include "InstPrinter/WebAssemblyInstPrinter.h" |
| #include "WebAssemblyMCTargetDesc.h" |
| #include "llvm/MC/MCContext.h" |
| #include "llvm/MC/MCSectionELF.h" |
| #include "llvm/MC/MCSubtargetInfo.h" |
| #include "llvm/MC/MCSymbolELF.h" |
| #include "llvm/Support/ELF.h" |
| #include "llvm/Support/ErrorHandling.h" |
| #include "llvm/Support/FormattedStream.h" |
| using namespace llvm; |
| |
| WebAssemblyTargetStreamer::WebAssemblyTargetStreamer(MCStreamer &S) |
| : MCTargetStreamer(S) {} |
| |
| WebAssemblyTargetAsmStreamer::WebAssemblyTargetAsmStreamer( |
| MCStreamer &S, formatted_raw_ostream &OS) |
| : WebAssemblyTargetStreamer(S), OS(OS) {} |
| |
| WebAssemblyTargetELFStreamer::WebAssemblyTargetELFStreamer(MCStreamer &S) |
| : WebAssemblyTargetStreamer(S) {} |
| |
| static void PrintTypes(formatted_raw_ostream &OS, ArrayRef<MVT> Types) { |
| bool First = true; |
| for (MVT Type : Types) { |
| if (First) |
| First = false; |
| else |
| OS << ", "; |
| OS << WebAssembly::TypeToString(Type); |
| } |
| OS << '\n'; |
| } |
| |
| void WebAssemblyTargetAsmStreamer::emitParam(ArrayRef<MVT> Types) { |
| OS << "\t.param \t"; |
| PrintTypes(OS, Types); |
| } |
| |
| void WebAssemblyTargetAsmStreamer::emitResult(ArrayRef<MVT> Types) { |
| OS << "\t.result \t"; |
| PrintTypes(OS, Types); |
| } |
| |
| void WebAssemblyTargetAsmStreamer::emitLocal(ArrayRef<MVT> Types) { |
| OS << "\t.local \t"; |
| PrintTypes(OS, Types); |
| } |
| |
| void WebAssemblyTargetAsmStreamer::emitEndFunc() { OS << "\t.endfunc\n"; } |
| |
| void WebAssemblyTargetAsmStreamer::emitIndirectFunctionType( |
| StringRef name, SmallVectorImpl<MVT> &SignatureVTs, size_t NumResults) { |
| OS << "\t.functype\t" << name; |
| if (NumResults == 0) OS << ", void"; |
| for (auto Ty : SignatureVTs) { |
| OS << ", " << WebAssembly::TypeToString(Ty); |
| } |
| OS << "\n"; |
| } |
| |
| // FIXME: What follows is not the real binary encoding. |
| |
| static void EncodeTypes(MCStreamer &Streamer, ArrayRef<MVT> Types) { |
| Streamer.EmitIntValue(Types.size(), sizeof(uint64_t)); |
| for (MVT Type : Types) |
| Streamer.EmitIntValue(Type.SimpleTy, sizeof(uint64_t)); |
| } |
| |
| void WebAssemblyTargetELFStreamer::emitParam(ArrayRef<MVT> Types) { |
| Streamer.EmitIntValue(WebAssembly::DotParam, sizeof(uint64_t)); |
| EncodeTypes(Streamer, Types); |
| } |
| |
| void WebAssemblyTargetELFStreamer::emitResult(ArrayRef<MVT> Types) { |
| Streamer.EmitIntValue(WebAssembly::DotResult, sizeof(uint64_t)); |
| EncodeTypes(Streamer, Types); |
| } |
| |
| void WebAssemblyTargetELFStreamer::emitLocal(ArrayRef<MVT> Types) { |
| Streamer.EmitIntValue(WebAssembly::DotLocal, sizeof(uint64_t)); |
| EncodeTypes(Streamer, Types); |
| } |
| |
| void WebAssemblyTargetELFStreamer::emitEndFunc() { |
| Streamer.EmitIntValue(WebAssembly::DotEndFunc, sizeof(uint64_t)); |
| } |