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
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
|
//===-- WebAssemblyMCTargetDesc.cpp - WebAssembly Target Descriptions -----===//
//
// 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 provides WebAssembly-specific target descriptions.
///
//===----------------------------------------------------------------------===//
#include "MCTargetDesc/WebAssemblyMCTargetDesc.h"
#include "MCTargetDesc/WebAssemblyInstPrinter.h"
#include "MCTargetDesc/WebAssemblyMCAsmInfo.h"
#include "MCTargetDesc/WebAssemblyTargetStreamer.h"
#include "TargetInfo/WebAssemblyTargetInfo.h"
#include "llvm/MC/MCInstrInfo.h"
#include "llvm/MC/MCRegisterInfo.h"
#include "llvm/MC/MCSubtargetInfo.h"
#include "llvm/MC/TargetRegistry.h"
#include "llvm/Support/ErrorHandling.h"
using namespace llvm;
#define DEBUG_TYPE "wasm-mc-target-desc"
#define GET_INSTRINFO_MC_DESC
#define ENABLE_INSTR_PREDICATE_VERIFIER
#include "WebAssemblyGenInstrInfo.inc"
#define GET_SUBTARGETINFO_MC_DESC
#include "WebAssemblyGenSubtargetInfo.inc"
#define GET_REGINFO_MC_DESC
#include "WebAssemblyGenRegisterInfo.inc"
// Exception handling & setjmp-longjmp handling related options.
// Emscripten's asm.js-style exception handling
cl::opt<bool> WebAssembly::WasmEnableEmEH(
"enable-emscripten-cxx-exceptions",
cl::desc("WebAssembly Emscripten-style exception handling"),
cl::init(false));
// Emscripten's asm.js-style setjmp/longjmp handling
cl::opt<bool> WebAssembly::WasmEnableEmSjLj(
"enable-emscripten-sjlj",
cl::desc("WebAssembly Emscripten-style setjmp/longjmp handling"),
cl::init(false));
// Exception handling using wasm EH instructions
cl::opt<bool>
WebAssembly::WasmEnableEH("wasm-enable-eh",
cl::desc("WebAssembly exception handling"));
// setjmp/longjmp handling using wasm EH instrutions
cl::opt<bool> WebAssembly::WasmEnableSjLj(
"wasm-enable-sjlj", cl::desc("WebAssembly setjmp/longjmp handling"));
// Whether we use the new exnref Wasm EH proposal adopted on Oct 2023.
// Should be used with -wasm-enable-eh.
// Currently set to false by default, but will later change to true and then
// later can be removed after the legacy WAsm EH instructions are removed.
cl::opt<bool> WebAssembly::WasmEnableExnref(
"wasm-enable-exnref", cl::desc("WebAssembly exception handling (exnref)"),
cl::init(false));
static MCAsmInfo *createMCAsmInfo(const MCRegisterInfo & /*MRI*/,
const Triple &TT,
const MCTargetOptions &Options) {
return new WebAssemblyMCAsmInfo(TT, Options);
}
static MCInstrInfo *createMCInstrInfo() {
auto *X = new MCInstrInfo();
InitWebAssemblyMCInstrInfo(X);
return X;
}
static MCRegisterInfo *createMCRegisterInfo(const Triple & /*T*/) {
auto *X = new MCRegisterInfo();
InitWebAssemblyMCRegisterInfo(X, 0);
return X;
}
static MCInstPrinter *createMCInstPrinter(const Triple & /*T*/,
unsigned SyntaxVariant,
const MCAsmInfo &MAI,
const MCInstrInfo &MII,
const MCRegisterInfo &MRI) {
assert(SyntaxVariant == 0 && "WebAssembly only has one syntax variant");
return new WebAssemblyInstPrinter(MAI, MII, MRI);
}
static MCCodeEmitter *createCodeEmitter(const MCInstrInfo &MCII,
MCContext &Ctx) {
return createWebAssemblyMCCodeEmitter(MCII, Ctx);
}
static MCAsmBackend *createAsmBackend(const Target & /*T*/,
const MCSubtargetInfo &STI,
const MCRegisterInfo & /*MRI*/,
const MCTargetOptions & /*Options*/) {
return createWebAssemblyAsmBackend(STI.getTargetTriple());
}
static MCSubtargetInfo *createMCSubtargetInfo(const Triple &TT, StringRef CPU,
StringRef FS) {
return createWebAssemblyMCSubtargetInfoImpl(TT, CPU, /*TuneCPU*/ CPU, FS);
}
static MCTargetStreamer *
createObjectTargetStreamer(MCStreamer &S, const MCSubtargetInfo &STI) {
return new WebAssemblyTargetWasmStreamer(S);
}
static MCTargetStreamer *
createAsmTargetStreamer(MCStreamer &S, formatted_raw_ostream &OS,
MCInstPrinter * /*InstPrint*/) {
return new WebAssemblyTargetAsmStreamer(S, OS);
}
static MCTargetStreamer *createNullTargetStreamer(MCStreamer &S) {
return new WebAssemblyTargetNullStreamer(S);
}
// Force static initialization.
extern "C" LLVM_EXTERNAL_VISIBILITY void LLVMInitializeWebAssemblyTargetMC() {
for (Target *T :
{&getTheWebAssemblyTarget32(), &getTheWebAssemblyTarget64()}) {
// Register the MC asm info.
RegisterMCAsmInfoFn X(*T, createMCAsmInfo);
// Register the MC instruction info.
TargetRegistry::RegisterMCInstrInfo(*T, createMCInstrInfo);
// Register the MC register info.
TargetRegistry::RegisterMCRegInfo(*T, createMCRegisterInfo);
// Register the MCInstPrinter.
TargetRegistry::RegisterMCInstPrinter(*T, createMCInstPrinter);
// Register the MC code emitter.
TargetRegistry::RegisterMCCodeEmitter(*T, createCodeEmitter);
// Register the ASM Backend.
TargetRegistry::RegisterMCAsmBackend(*T, createAsmBackend);
// Register the MC subtarget info.
TargetRegistry::RegisterMCSubtargetInfo(*T, createMCSubtargetInfo);
// Register the object target streamer.
TargetRegistry::RegisterObjectTargetStreamer(*T,
createObjectTargetStreamer);
// Register the asm target streamer.
TargetRegistry::RegisterAsmTargetStreamer(*T, createAsmTargetStreamer);
// Register the null target streamer.
TargetRegistry::RegisterNullTargetStreamer(*T, createNullTargetStreamer);
}
}
|
