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
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
|
/* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 2 -*-
* vim: set ts=8 sts=2 et sw=2 tw=80:
*
* Copyright 2021 Mozilla Foundation
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
#include "wasm/WasmCodegenTypes.h"
#include "wasm/WasmExprType.h"
#include "wasm/WasmStubs.h"
#include "wasm/WasmTypeDef.h"
#include "wasm/WasmValidate.h"
#include "wasm/WasmValue.h"
using mozilla::MakeEnumeratedRange;
using mozilla::PodZero;
using namespace js;
using namespace js::wasm;
ArgTypeVector::ArgTypeVector(const FuncType& funcType)
: args_(funcType.args()),
hasStackResults_(ABIResultIter::HasStackResults(
ResultType::Vector(funcType.results()))) {}
bool TrapSiteVectorArray::empty() const {
for (Trap trap : MakeEnumeratedRange(Trap::Limit)) {
if (!(*this)[trap].empty()) {
return false;
}
}
return true;
}
void TrapSiteVectorArray::clear() {
for (Trap trap : MakeEnumeratedRange(Trap::Limit)) {
(*this)[trap].clear();
}
}
void TrapSiteVectorArray::swap(TrapSiteVectorArray& rhs) {
for (Trap trap : MakeEnumeratedRange(Trap::Limit)) {
(*this)[trap].swap(rhs[trap]);
}
}
void TrapSiteVectorArray::shrinkStorageToFit() {
for (Trap trap : MakeEnumeratedRange(Trap::Limit)) {
(*this)[trap].shrinkStorageToFit();
}
}
size_t TrapSiteVectorArray::sizeOfExcludingThis(
MallocSizeOf mallocSizeOf) const {
size_t ret = 0;
for (Trap trap : MakeEnumeratedRange(Trap::Limit)) {
ret += (*this)[trap].sizeOfExcludingThis(mallocSizeOf);
}
return ret;
}
CodeRange::CodeRange(Kind kind, Offsets offsets)
: begin_(offsets.begin), ret_(0), end_(offsets.end), kind_(kind) {
MOZ_ASSERT(begin_ <= end_);
PodZero(&u);
#ifdef DEBUG
switch (kind_) {
case FarJumpIsland:
case TrapExit:
case Throw:
break;
default:
MOZ_CRASH("should use more specific constructor");
}
#endif
}
CodeRange::CodeRange(Kind kind, uint32_t funcIndex, Offsets offsets)
: begin_(offsets.begin), ret_(0), end_(offsets.end), kind_(kind) {
u.funcIndex_ = funcIndex;
u.func.lineOrBytecode_ = 0;
u.func.beginToUncheckedCallEntry_ = 0;
u.func.beginToTierEntry_ = 0;
MOZ_ASSERT(isEntry());
MOZ_ASSERT(begin_ <= end_);
}
CodeRange::CodeRange(Kind kind, CallableOffsets offsets)
: begin_(offsets.begin), ret_(offsets.ret), end_(offsets.end), kind_(kind) {
MOZ_ASSERT(begin_ < ret_);
MOZ_ASSERT(ret_ < end_);
PodZero(&u);
#ifdef DEBUG
switch (kind_) {
case DebugTrap:
case BuiltinThunk:
break;
default:
MOZ_CRASH("should use more specific constructor");
}
#endif
}
CodeRange::CodeRange(Kind kind, uint32_t funcIndex, CallableOffsets offsets)
: begin_(offsets.begin), ret_(offsets.ret), end_(offsets.end), kind_(kind) {
MOZ_ASSERT(isImportExit() || isJitEntry());
MOZ_ASSERT(begin_ < ret_);
MOZ_ASSERT(ret_ < end_);
u.funcIndex_ = funcIndex;
u.func.lineOrBytecode_ = 0;
u.func.beginToUncheckedCallEntry_ = 0;
u.func.beginToTierEntry_ = 0;
}
CodeRange::CodeRange(uint32_t funcIndex, uint32_t funcLineOrBytecode,
FuncOffsets offsets)
: begin_(offsets.begin),
ret_(offsets.ret),
end_(offsets.end),
kind_(Function) {
MOZ_ASSERT(begin_ < ret_);
MOZ_ASSERT(ret_ < end_);
MOZ_ASSERT(offsets.uncheckedCallEntry - begin_ <= UINT16_MAX);
MOZ_ASSERT(offsets.tierEntry - begin_ <= UINT16_MAX);
u.funcIndex_ = funcIndex;
u.func.lineOrBytecode_ = funcLineOrBytecode;
u.func.beginToUncheckedCallEntry_ = offsets.uncheckedCallEntry - begin_;
u.func.beginToTierEntry_ = offsets.tierEntry - begin_;
}
const CodeRange* wasm::LookupInSorted(const CodeRangeVector& codeRanges,
CodeRange::OffsetInCode target) {
size_t lowerBound = 0;
size_t upperBound = codeRanges.length();
size_t match;
if (!BinarySearch(codeRanges, lowerBound, upperBound, target, &match)) {
return nullptr;
}
return &codeRanges[match];
}
CallIndirectId CallIndirectId::forAsmJSFunc() {
return CallIndirectId(CallIndirectIdKind::AsmJS, 0);
}
CallIndirectId CallIndirectId::forFunc(const ModuleEnvironment& moduleEnv,
uint32_t funcIndex) {
// asm.js tables are homogenous and don't require a signature check
if (moduleEnv.isAsmJS()) {
return CallIndirectId::forAsmJSFunc();
}
FuncDesc func = moduleEnv.funcs[funcIndex];
if (!func.canRefFunc()) {
return CallIndirectId();
}
return CallIndirectId::forFuncType(moduleEnv,
moduleEnv.funcs[funcIndex].typeIndex);
}
CallIndirectId CallIndirectId::forFuncType(const ModuleEnvironment& moduleEnv,
uint32_t funcTypeIndex) {
// asm.js tables are homogenous and don't require a signature check
if (moduleEnv.isAsmJS()) {
return CallIndirectId::forAsmJSFunc();
}
const FuncType& funcType = moduleEnv.types->type(funcTypeIndex).funcType();
if (funcType.hasImmediateTypeId()) {
return CallIndirectId(CallIndirectIdKind::Immediate,
funcType.immediateTypeId());
}
return CallIndirectId(CallIndirectIdKind::Global,
moduleEnv.offsetOfTypeDef(funcTypeIndex));
}
CalleeDesc CalleeDesc::function(uint32_t funcIndex) {
CalleeDesc c;
c.which_ = Func;
c.u.funcIndex_ = funcIndex;
return c;
}
CalleeDesc CalleeDesc::import(uint32_t instanceDataOffset) {
CalleeDesc c;
c.which_ = Import;
c.u.import.instanceDataOffset_ = instanceDataOffset;
return c;
}
CalleeDesc CalleeDesc::wasmTable(const ModuleEnvironment& moduleEnv,
const TableDesc& desc, uint32_t tableIndex,
CallIndirectId callIndirectId) {
CalleeDesc c;
c.which_ = WasmTable;
c.u.table.instanceDataOffset_ =
moduleEnv.offsetOfTableInstanceData(tableIndex);
c.u.table.minLength_ = desc.initialLength;
c.u.table.maxLength_ = desc.maximumLength;
c.u.table.callIndirectId_ = callIndirectId;
return c;
}
CalleeDesc CalleeDesc::asmJSTable(const ModuleEnvironment& moduleEnv,
uint32_t tableIndex) {
CalleeDesc c;
c.which_ = AsmJSTable;
c.u.table.instanceDataOffset_ =
moduleEnv.offsetOfTableInstanceData(tableIndex);
return c;
}
CalleeDesc CalleeDesc::builtin(SymbolicAddress callee) {
CalleeDesc c;
c.which_ = Builtin;
c.u.builtin_ = callee;
return c;
}
CalleeDesc CalleeDesc::builtinInstanceMethod(SymbolicAddress callee) {
CalleeDesc c;
c.which_ = BuiltinInstanceMethod;
c.u.builtin_ = callee;
return c;
}
CalleeDesc CalleeDesc::wasmFuncRef() {
CalleeDesc c;
c.which_ = FuncRef;
return c;
}
|
