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
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
309
310
311
312
313
314
315
316
317
318
319
320
321
322
323
324
325
326
327
328
329
330
331
332
333
334
335
336
337
338
339
340
341
342
343
344
345
346
347
348
349
350
351
352
353
354
355
356
357
358
359
360
361
362
|
/* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 4 -*-
* vim: set ts=8 sts=4 et sw=4 tw=99:
* This Source Code Form is subject to the terms of the Mozilla Public
* License, v. 2.0. If a copy of the MPL was not distributed with this
* file, You can obtain one at http://mozilla.org/MPL/2.0/. */
#ifndef jit_BaselineCompiler_h
#define jit_BaselineCompiler_h
#include "jit/FixedList.h"
#if defined(JS_CODEGEN_X86)
# include "jit/x86/BaselineCompiler-x86.h"
#elif defined(JS_CODEGEN_X64)
# include "jit/x64/BaselineCompiler-x64.h"
#elif defined(JS_CODEGEN_ARM)
# include "jit/arm/BaselineCompiler-arm.h"
#elif defined(JS_CODEGEN_ARM64)
# include "jit/arm64/BaselineCompiler-arm64.h"
#elif defined(JS_CODEGEN_MIPS32)
# include "jit/mips32/BaselineCompiler-mips32.h"
#elif defined(JS_CODEGEN_MIPS64)
# include "jit/mips64/BaselineCompiler-mips64.h"
#elif defined(JS_CODEGEN_NONE)
# include "jit/none/BaselineCompiler-none.h"
#else
# error "Unknown architecture!"
#endif
namespace js {
namespace jit {
#define OPCODE_LIST(_) \
_(JSOP_NOP) \
_(JSOP_NOP_DESTRUCTURING) \
_(JSOP_LABEL) \
_(JSOP_POP) \
_(JSOP_POPN) \
_(JSOP_DUPAT) \
_(JSOP_ENTERWITH) \
_(JSOP_LEAVEWITH) \
_(JSOP_DUP) \
_(JSOP_DUP2) \
_(JSOP_SWAP) \
_(JSOP_PICK) \
_(JSOP_UNPICK) \
_(JSOP_GOTO) \
_(JSOP_IFEQ) \
_(JSOP_IFNE) \
_(JSOP_AND) \
_(JSOP_OR) \
_(JSOP_NOT) \
_(JSOP_POS) \
_(JSOP_LOOPHEAD) \
_(JSOP_LOOPENTRY) \
_(JSOP_VOID) \
_(JSOP_UNDEFINED) \
_(JSOP_HOLE) \
_(JSOP_NULL) \
_(JSOP_TRUE) \
_(JSOP_FALSE) \
_(JSOP_ZERO) \
_(JSOP_ONE) \
_(JSOP_INT8) \
_(JSOP_INT32) \
_(JSOP_UINT16) \
_(JSOP_UINT24) \
_(JSOP_DOUBLE) \
_(JSOP_STRING) \
_(JSOP_SYMBOL) \
_(JSOP_OBJECT) \
_(JSOP_CALLSITEOBJ) \
_(JSOP_REGEXP) \
_(JSOP_LAMBDA) \
_(JSOP_LAMBDA_ARROW) \
_(JSOP_SETFUNNAME) \
_(JSOP_BITOR) \
_(JSOP_BITXOR) \
_(JSOP_BITAND) \
_(JSOP_LSH) \
_(JSOP_RSH) \
_(JSOP_URSH) \
_(JSOP_ADD) \
_(JSOP_SUB) \
_(JSOP_MUL) \
_(JSOP_DIV) \
_(JSOP_MOD) \
_(JSOP_POW) \
_(JSOP_LT) \
_(JSOP_LE) \
_(JSOP_GT) \
_(JSOP_GE) \
_(JSOP_EQ) \
_(JSOP_NE) \
_(JSOP_STRICTEQ) \
_(JSOP_STRICTNE) \
_(JSOP_CONDSWITCH) \
_(JSOP_CASE) \
_(JSOP_DEFAULT) \
_(JSOP_LINENO) \
_(JSOP_BITNOT) \
_(JSOP_NEG) \
_(JSOP_NEWARRAY) \
_(JSOP_SPREADCALLARRAY) \
_(JSOP_NEWARRAY_COPYONWRITE) \
_(JSOP_INITELEM_ARRAY) \
_(JSOP_NEWOBJECT) \
_(JSOP_NEWINIT) \
_(JSOP_INITELEM) \
_(JSOP_INITELEM_GETTER) \
_(JSOP_INITELEM_SETTER) \
_(JSOP_INITELEM_INC) \
_(JSOP_MUTATEPROTO) \
_(JSOP_INITPROP) \
_(JSOP_INITLOCKEDPROP) \
_(JSOP_INITHIDDENPROP) \
_(JSOP_INITPROP_GETTER) \
_(JSOP_INITPROP_SETTER) \
_(JSOP_ARRAYPUSH) \
_(JSOP_GETELEM) \
_(JSOP_SETELEM) \
_(JSOP_STRICTSETELEM) \
_(JSOP_CALLELEM) \
_(JSOP_DELELEM) \
_(JSOP_STRICTDELELEM) \
_(JSOP_IN) \
_(JSOP_GETGNAME) \
_(JSOP_BINDGNAME) \
_(JSOP_SETGNAME) \
_(JSOP_STRICTSETGNAME) \
_(JSOP_SETNAME) \
_(JSOP_STRICTSETNAME) \
_(JSOP_GETPROP) \
_(JSOP_SETPROP) \
_(JSOP_STRICTSETPROP) \
_(JSOP_CALLPROP) \
_(JSOP_DELPROP) \
_(JSOP_STRICTDELPROP) \
_(JSOP_LENGTH) \
_(JSOP_GETXPROP) \
_(JSOP_GETALIASEDVAR) \
_(JSOP_SETALIASEDVAR) \
_(JSOP_GETNAME) \
_(JSOP_BINDNAME) \
_(JSOP_DELNAME) \
_(JSOP_GETIMPORT) \
_(JSOP_GETINTRINSIC) \
_(JSOP_BINDVAR) \
_(JSOP_DEFVAR) \
_(JSOP_DEFCONST) \
_(JSOP_DEFLET) \
_(JSOP_DEFFUN) \
_(JSOP_GETLOCAL) \
_(JSOP_SETLOCAL) \
_(JSOP_GETARG) \
_(JSOP_SETARG) \
_(JSOP_CHECKLEXICAL) \
_(JSOP_INITLEXICAL) \
_(JSOP_INITGLEXICAL) \
_(JSOP_CHECKALIASEDLEXICAL) \
_(JSOP_INITALIASEDLEXICAL) \
_(JSOP_UNINITIALIZED) \
_(JSOP_CALL) \
_(JSOP_CALLITER) \
_(JSOP_FUNCALL) \
_(JSOP_FUNAPPLY) \
_(JSOP_NEW) \
_(JSOP_EVAL) \
_(JSOP_STRICTEVAL) \
_(JSOP_SPREADCALL) \
_(JSOP_SPREADNEW) \
_(JSOP_SPREADEVAL) \
_(JSOP_STRICTSPREADEVAL) \
_(JSOP_OPTIMIZE_SPREADCALL)\
_(JSOP_IMPLICITTHIS) \
_(JSOP_GIMPLICITTHIS) \
_(JSOP_INSTANCEOF) \
_(JSOP_TYPEOF) \
_(JSOP_TYPEOFEXPR) \
_(JSOP_THROWMSG) \
_(JSOP_THROW) \
_(JSOP_THROWING) \
_(JSOP_TRY) \
_(JSOP_FINALLY) \
_(JSOP_GOSUB) \
_(JSOP_RETSUB) \
_(JSOP_PUSHLEXICALENV) \
_(JSOP_POPLEXICALENV) \
_(JSOP_FRESHENLEXICALENV) \
_(JSOP_RECREATELEXICALENV) \
_(JSOP_DEBUGLEAVELEXICALENV) \
_(JSOP_PUSHVARENV) \
_(JSOP_POPVARENV) \
_(JSOP_EXCEPTION) \
_(JSOP_DEBUGGER) \
_(JSOP_ARGUMENTS) \
_(JSOP_RUNONCE) \
_(JSOP_REST) \
_(JSOP_TOASYNC) \
_(JSOP_TOID) \
_(JSOP_TOSTRING) \
_(JSOP_TABLESWITCH) \
_(JSOP_ITER) \
_(JSOP_MOREITER) \
_(JSOP_ISNOITER) \
_(JSOP_ENDITER) \
_(JSOP_ISGENCLOSING) \
_(JSOP_GENERATOR) \
_(JSOP_INITIALYIELD) \
_(JSOP_YIELD) \
_(JSOP_DEBUGAFTERYIELD) \
_(JSOP_FINALYIELDRVAL) \
_(JSOP_RESUME) \
_(JSOP_CALLEE) \
_(JSOP_GETRVAL) \
_(JSOP_SETRVAL) \
_(JSOP_RETRVAL) \
_(JSOP_RETURN) \
_(JSOP_FUNCTIONTHIS) \
_(JSOP_GLOBALTHIS) \
_(JSOP_CHECKISOBJ) \
_(JSOP_CHECKTHIS) \
_(JSOP_CHECKRETURN) \
_(JSOP_NEWTARGET) \
_(JSOP_SUPERCALL) \
_(JSOP_SPREADSUPERCALL) \
_(JSOP_THROWSETCONST) \
_(JSOP_THROWSETALIASEDCONST) \
_(JSOP_THROWSETCALLEE) \
_(JSOP_INITHIDDENPROP_GETTER) \
_(JSOP_INITHIDDENPROP_SETTER) \
_(JSOP_INITHIDDENELEM) \
_(JSOP_INITHIDDENELEM_GETTER) \
_(JSOP_INITHIDDENELEM_SETTER) \
_(JSOP_CHECKOBJCOERCIBLE) \
_(JSOP_DEBUGCHECKSELFHOSTED) \
_(JSOP_JUMPTARGET) \
_(JSOP_IS_CONSTRUCTING)
class BaselineCompiler : public BaselineCompilerSpecific
{
FixedList<Label> labels_;
NonAssertingLabel return_;
NonAssertingLabel postBarrierSlot_;
// Native code offset right before the scope chain is initialized.
CodeOffset prologueOffset_;
// Native code offset right before the frame is popped and the method
// returned from.
CodeOffset epilogueOffset_;
// Native code offset right after debug prologue and epilogue, or
// equivalent positions when debug mode is off.
CodeOffset postDebugPrologueOffset_;
// For each INITIALYIELD or YIELD op, this Vector maps the yield index
// to the bytecode offset of the next op.
Vector<uint32_t> yieldOffsets_;
// Whether any on stack arguments are modified.
bool modifiesArguments_;
Label* labelOf(jsbytecode* pc) {
return &labels_[script->pcToOffset(pc)];
}
// If a script has more |nslots| than this, then emit code to do an
// early stack check.
static const unsigned EARLY_STACK_CHECK_SLOT_COUNT = 128;
bool needsEarlyStackCheck() const {
return script->nslots() > EARLY_STACK_CHECK_SLOT_COUNT;
}
public:
BaselineCompiler(JSContext* cx, TempAllocator& alloc, JSScript* script);
MOZ_MUST_USE bool init();
MethodStatus compile();
private:
MethodStatus emitBody();
MOZ_MUST_USE bool emitCheckThis(ValueOperand val);
void emitLoadReturnValue(ValueOperand val);
void emitInitializeLocals();
MOZ_MUST_USE bool emitPrologue();
MOZ_MUST_USE bool emitEpilogue();
MOZ_MUST_USE bool emitOutOfLinePostBarrierSlot();
MOZ_MUST_USE bool emitIC(ICStub* stub, ICEntry::Kind kind);
MOZ_MUST_USE bool emitOpIC(ICStub* stub) {
return emitIC(stub, ICEntry::Kind_Op);
}
MOZ_MUST_USE bool emitNonOpIC(ICStub* stub) {
return emitIC(stub, ICEntry::Kind_NonOp);
}
MOZ_MUST_USE bool emitStackCheck(bool earlyCheck=false);
MOZ_MUST_USE bool emitInterruptCheck();
MOZ_MUST_USE bool emitWarmUpCounterIncrement(bool allowOsr=true);
MOZ_MUST_USE bool emitArgumentTypeChecks();
void emitIsDebuggeeCheck();
MOZ_MUST_USE bool emitDebugPrologue();
MOZ_MUST_USE bool emitDebugTrap();
MOZ_MUST_USE bool emitTraceLoggerEnter();
MOZ_MUST_USE bool emitTraceLoggerExit();
MOZ_MUST_USE bool emitTraceLoggerResume(Register script, AllocatableGeneralRegisterSet& regs);
void emitProfilerEnterFrame();
void emitProfilerExitFrame();
MOZ_MUST_USE bool initEnvironmentChain();
void storeValue(const StackValue* source, const Address& dest,
const ValueOperand& scratch);
#define EMIT_OP(op) bool emit_##op();
OPCODE_LIST(EMIT_OP)
#undef EMIT_OP
// JSOP_NEG, JSOP_BITNOT
MOZ_MUST_USE bool emitUnaryArith();
// JSOP_BITXOR, JSOP_LSH, JSOP_ADD etc.
MOZ_MUST_USE bool emitBinaryArith();
// Handles JSOP_LT, JSOP_GT, and friends
MOZ_MUST_USE bool emitCompare();
MOZ_MUST_USE bool emitReturn();
MOZ_MUST_USE bool emitToBoolean();
MOZ_MUST_USE bool emitTest(bool branchIfTrue);
MOZ_MUST_USE bool emitAndOr(bool branchIfTrue);
MOZ_MUST_USE bool emitCall();
MOZ_MUST_USE bool emitSpreadCall();
MOZ_MUST_USE bool emitInitPropGetterSetter();
MOZ_MUST_USE bool emitInitElemGetterSetter();
MOZ_MUST_USE bool emitFormalArgAccess(uint32_t arg, bool get);
MOZ_MUST_USE bool emitThrowConstAssignment();
MOZ_MUST_USE bool emitUninitializedLexicalCheck(const ValueOperand& val);
MOZ_MUST_USE bool emitIsMagicValue();
MOZ_MUST_USE bool addPCMappingEntry(bool addIndexEntry);
MOZ_MUST_USE bool addYieldOffset();
void getEnvironmentCoordinateObject(Register reg);
Address getEnvironmentCoordinateAddressFromObject(Register objReg, Register reg);
Address getEnvironmentCoordinateAddress(Register reg);
};
extern const VMFunction NewArrayCopyOnWriteInfo;
} // namespace jit
} // namespace js
#endif /* jit_BaselineCompiler_h */
|
