2946cd7010
to reflect the new license. We understand that people may be surprised that we're moving the header entirely to discuss the new license. We checked this carefully with the Foundation's lawyer and we believe this is the correct approach. Essentially, all code in the project is now made available by the LLVM project under our new license, so you will see that the license headers include that license only. Some of our contributors have contributed code under our old license, and accordingly, we have retained a copy of our old license notice in the top-level files in each project and repository. llvm-svn: 351636
146 lines
4.4 KiB
C++
146 lines
4.4 KiB
C++
//==-- WebAssemblyTargetStreamer.cpp - WebAssembly Target Streamer Methods --=//
|
|
//
|
|
// 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
|
|
//
|
|
//===----------------------------------------------------------------------===//
|
|
///
|
|
/// \file
|
|
/// 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/MCSectionWasm.h"
|
|
#include "llvm/MC/MCSubtargetInfo.h"
|
|
#include "llvm/MC/MCSymbolWasm.h"
|
|
#include "llvm/Support/Casting.h"
|
|
#include "llvm/Support/ErrorHandling.h"
|
|
#include "llvm/Support/FormattedStream.h"
|
|
using namespace llvm;
|
|
|
|
WebAssemblyTargetStreamer::WebAssemblyTargetStreamer(MCStreamer &S)
|
|
: MCTargetStreamer(S) {}
|
|
|
|
void WebAssemblyTargetStreamer::emitValueType(wasm::ValType Type) {
|
|
Streamer.EmitIntValue(uint8_t(Type), 1);
|
|
}
|
|
|
|
WebAssemblyTargetAsmStreamer::WebAssemblyTargetAsmStreamer(
|
|
MCStreamer &S, formatted_raw_ostream &OS)
|
|
: WebAssemblyTargetStreamer(S), OS(OS) {}
|
|
|
|
WebAssemblyTargetWasmStreamer::WebAssemblyTargetWasmStreamer(MCStreamer &S)
|
|
: WebAssemblyTargetStreamer(S) {}
|
|
|
|
static void printTypes(formatted_raw_ostream &OS,
|
|
ArrayRef<wasm::ValType> Types) {
|
|
bool First = true;
|
|
for (auto Type : Types) {
|
|
if (First)
|
|
First = false;
|
|
else
|
|
OS << ", ";
|
|
OS << WebAssembly::typeToString(Type);
|
|
}
|
|
OS << '\n';
|
|
}
|
|
|
|
void WebAssemblyTargetAsmStreamer::emitLocal(ArrayRef<wasm::ValType> Types) {
|
|
if (!Types.empty()) {
|
|
OS << "\t.local \t";
|
|
printTypes(OS, Types);
|
|
}
|
|
}
|
|
|
|
void WebAssemblyTargetAsmStreamer::emitEndFunc() { OS << "\t.endfunc\n"; }
|
|
|
|
void WebAssemblyTargetAsmStreamer::emitSignature(
|
|
const wasm::WasmSignature *Sig) {
|
|
OS << "(";
|
|
emitParamList(Sig);
|
|
OS << ") -> (";
|
|
emitReturnList(Sig);
|
|
OS << ")";
|
|
}
|
|
|
|
void WebAssemblyTargetAsmStreamer::emitParamList(
|
|
const wasm::WasmSignature *Sig) {
|
|
auto &Params = Sig->Params;
|
|
for (auto &Ty : Params) {
|
|
if (&Ty != &Params[0])
|
|
OS << ", ";
|
|
OS << WebAssembly::typeToString(Ty);
|
|
}
|
|
}
|
|
|
|
void WebAssemblyTargetAsmStreamer::emitReturnList(
|
|
const wasm::WasmSignature *Sig) {
|
|
auto &Returns = Sig->Returns;
|
|
for (auto &Ty : Returns) {
|
|
if (&Ty != &Returns[0])
|
|
OS << ", ";
|
|
OS << WebAssembly::typeToString(Ty);
|
|
}
|
|
}
|
|
|
|
void WebAssemblyTargetAsmStreamer::emitFunctionType(const MCSymbolWasm *Sym) {
|
|
assert(Sym->isFunction());
|
|
OS << "\t.functype\t" << Sym->getName() << " ";
|
|
emitSignature(Sym->getSignature());
|
|
OS << "\n";
|
|
}
|
|
|
|
void WebAssemblyTargetAsmStreamer::emitGlobalType(const MCSymbolWasm *Sym) {
|
|
assert(Sym->isGlobal());
|
|
OS << "\t.globaltype\t" << Sym->getName() << ", "
|
|
<< WebAssembly::typeToString(
|
|
static_cast<wasm::ValType>(Sym->getGlobalType().Type))
|
|
<< '\n';
|
|
}
|
|
|
|
void WebAssemblyTargetAsmStreamer::emitEventType(const MCSymbolWasm *Sym) {
|
|
assert(Sym->isEvent());
|
|
OS << "\t.eventtype\t" << Sym->getName() << " ";
|
|
emitParamList(Sym->getSignature());
|
|
OS << "\n";
|
|
}
|
|
|
|
void WebAssemblyTargetAsmStreamer::emitImportModule(const MCSymbolWasm *Sym,
|
|
StringRef ModuleName) {
|
|
OS << "\t.import_module\t" << Sym->getName() << ", " << ModuleName << '\n';
|
|
}
|
|
|
|
void WebAssemblyTargetAsmStreamer::emitIndIdx(const MCExpr *Value) {
|
|
OS << "\t.indidx \t" << *Value << '\n';
|
|
}
|
|
|
|
void WebAssemblyTargetWasmStreamer::emitLocal(ArrayRef<wasm::ValType> Types) {
|
|
SmallVector<std::pair<wasm::ValType, uint32_t>, 4> Grouped;
|
|
for (auto Type : Types) {
|
|
if (Grouped.empty() || Grouped.back().first != Type)
|
|
Grouped.push_back(std::make_pair(Type, 1));
|
|
else
|
|
++Grouped.back().second;
|
|
}
|
|
|
|
Streamer.EmitULEB128IntValue(Grouped.size());
|
|
for (auto Pair : Grouped) {
|
|
Streamer.EmitULEB128IntValue(Pair.second);
|
|
emitValueType(Pair.first);
|
|
}
|
|
}
|
|
|
|
void WebAssemblyTargetWasmStreamer::emitEndFunc() {
|
|
llvm_unreachable(".end_func is not needed for direct wasm output");
|
|
}
|
|
|
|
void WebAssemblyTargetWasmStreamer::emitIndIdx(const MCExpr *Value) {
|
|
llvm_unreachable(".indidx encoding not yet implemented");
|
|
}
|