1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
|
//==-- 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 "MCTargetDesc/WebAssemblyTargetStreamer.h"
#include "MCTargetDesc/WebAssemblyInstPrinter.h"
#include "MCTargetDesc/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::emitFunctionType(const MCSymbolWasm *Sym) {
assert(Sym->isFunction());
OS << "\t.functype\t" << Sym->getName() << " ";
OS << WebAssembly::signatureToString(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));
if (!Sym->getGlobalType().Mutable)
OS << ", immutable";
OS << '\n';
}
void WebAssemblyTargetAsmStreamer::emitTableType(const MCSymbolWasm *Sym) {
assert(Sym->isTable());
OS << "\t.tabletype\t" << Sym->getName() << ", "
<< WebAssembly::typeToString(Sym->getTableType());
OS << '\n';
}
void WebAssemblyTargetAsmStreamer::emitEventType(const MCSymbolWasm *Sym) {
assert(Sym->isEvent());
OS << "\t.eventtype\t" << Sym->getName() << " ";
OS << WebAssembly::typeListToString(Sym->getSignature()->Params);
OS << "\n";
}
void WebAssemblyTargetAsmStreamer::emitImportModule(const MCSymbolWasm *Sym,
StringRef ImportModule) {
OS << "\t.import_module\t" << Sym->getName() << ", "
<< ImportModule << '\n';
}
void WebAssemblyTargetAsmStreamer::emitImportName(const MCSymbolWasm *Sym,
StringRef ImportName) {
OS << "\t.import_name\t" << Sym->getName() << ", "
<< ImportName << '\n';
}
void WebAssemblyTargetAsmStreamer::emitExportName(const MCSymbolWasm *Sym,
StringRef ExportName) {
OS << "\t.export_name\t" << Sym->getName() << ", "
<< ExportName << '\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");
}
|
