Line data Source code
1 : // Copyright 2012 the V8 project authors. All rights reserved.
2 : // Use of this source code is governed by a BSD-style license that can be
3 : // found in the LICENSE file.
4 :
5 : #if V8_TARGET_ARCH_X64
6 :
7 : #include "src/base/bits.h"
8 : #include "src/base/division-by-constant.h"
9 : #include "src/base/utils/random-number-generator.h"
10 : #include "src/bootstrapper.h"
11 : #include "src/callable.h"
12 : #include "src/code-factory.h"
13 : #include "src/counters.h"
14 : #include "src/debug/debug.h"
15 : #include "src/external-reference-table.h"
16 : #include "src/frames-inl.h"
17 : #include "src/globals.h"
18 : #include "src/heap/heap-inl.h" // For MemoryChunk.
19 : #include "src/macro-assembler.h"
20 : #include "src/objects-inl.h"
21 : #include "src/objects/smi.h"
22 : #include "src/register-configuration.h"
23 : #include "src/snapshot/embedded-data.h"
24 : #include "src/snapshot/snapshot.h"
25 : #include "src/string-constants.h"
26 : #include "src/x64/assembler-x64.h"
27 :
28 : // Satisfy cpplint check, but don't include platform-specific header. It is
29 : // included recursively via macro-assembler.h.
30 : #if 0
31 : #include "src/x64/macro-assembler-x64.h"
32 : #endif
33 :
34 : namespace v8 {
35 : namespace internal {
36 :
37 1792 : Operand StackArgumentsAccessor::GetArgumentOperand(int index) {
38 : DCHECK_GE(index, 0);
39 1792 : int receiver = (receiver_mode_ == ARGUMENTS_CONTAIN_RECEIVER) ? 1 : 0;
40 : int displacement_to_last_argument =
41 1792 : base_reg_ == rsp ? kPCOnStackSize : kFPOnStackSize + kPCOnStackSize;
42 1792 : displacement_to_last_argument += extra_displacement_to_last_argument_;
43 1792 : if (argument_count_reg_ == no_reg) {
44 : // argument[0] is at base_reg_ + displacement_to_last_argument +
45 : // (argument_count_immediate_ + receiver - 1) * kSystemPointerSize.
46 : DCHECK_GT(argument_count_immediate_ + receiver, 0);
47 : return Operand(base_reg_,
48 : displacement_to_last_argument +
49 0 : (argument_count_immediate_ + receiver - 1 - index) *
50 0 : kSystemPointerSize);
51 : } else {
52 : // argument[0] is at base_reg_ + displacement_to_last_argument +
53 : // argument_count_reg_ * times_system_pointer_size + (receiver - 1) *
54 : // kSystemPointerSize.
55 : return Operand(base_reg_, argument_count_reg_, times_system_pointer_size,
56 : displacement_to_last_argument +
57 1792 : (receiver - 1 - index) * kSystemPointerSize);
58 : }
59 : }
60 :
61 0 : StackArgumentsAccessor::StackArgumentsAccessor(
62 : Register base_reg, const ParameterCount& parameter_count,
63 : StackArgumentsAccessorReceiverMode receiver_mode,
64 : int extra_displacement_to_last_argument)
65 : : base_reg_(base_reg),
66 : argument_count_reg_(parameter_count.is_reg() ? parameter_count.reg()
67 : : no_reg),
68 : argument_count_immediate_(
69 : parameter_count.is_immediate() ? parameter_count.immediate() : 0),
70 : receiver_mode_(receiver_mode),
71 : extra_displacement_to_last_argument_(
72 672 : extra_displacement_to_last_argument) {}
73 :
74 392 : void MacroAssembler::Load(Register destination, ExternalReference source) {
75 392 : if (root_array_available_ && options().enable_root_array_delta_access) {
76 0 : intptr_t delta = RootRegisterOffsetForExternalReference(isolate(), source);
77 0 : if (is_int32(delta)) {
78 0 : movq(destination, Operand(kRootRegister, static_cast<int32_t>(delta)));
79 0 : return;
80 : }
81 : }
82 : // Safe code.
83 392 : if (destination == rax && !options().isolate_independent_code) {
84 0 : load_rax(source);
85 : } else {
86 392 : movq(destination, ExternalReferenceAsOperand(source));
87 : }
88 : }
89 :
90 :
91 47127 : void MacroAssembler::Store(ExternalReference destination, Register source) {
92 47127 : if (root_array_available_ && options().enable_root_array_delta_access) {
93 : intptr_t delta =
94 0 : RootRegisterOffsetForExternalReference(isolate(), destination);
95 0 : if (is_int32(delta)) {
96 0 : movq(Operand(kRootRegister, static_cast<int32_t>(delta)), source);
97 0 : return;
98 : }
99 : }
100 : // Safe code.
101 47127 : if (source == rax && !options().isolate_independent_code) {
102 0 : store_rax(destination);
103 : } else {
104 47127 : movq(ExternalReferenceAsOperand(destination), source);
105 : }
106 : }
107 :
108 40544 : void TurboAssembler::LoadFromConstantsTable(Register destination,
109 : int constant_index) {
110 : DCHECK(RootsTable::IsImmortalImmovable(RootIndex::kBuiltinsConstantsTable));
111 40544 : LoadRoot(destination, RootIndex::kBuiltinsConstantsTable);
112 : LoadTaggedPointerField(
113 : destination,
114 : FieldOperand(destination, FixedArray::OffsetOfElementAt(constant_index)));
115 40544 : }
116 :
117 19264 : void TurboAssembler::LoadRootRegisterOffset(Register destination,
118 : intptr_t offset) {
119 : DCHECK(is_int32(offset));
120 19264 : if (offset == 0) {
121 : Move(destination, kRootRegister);
122 : } else {
123 36736 : leaq(destination, Operand(kRootRegister, static_cast<int32_t>(offset)));
124 : }
125 19264 : }
126 :
127 775936 : void TurboAssembler::LoadRootRelative(Register destination, int32_t offset) {
128 1551872 : movq(destination, Operand(kRootRegister, offset));
129 775936 : }
130 :
131 953836 : void TurboAssembler::LoadAddress(Register destination,
132 : ExternalReference source) {
133 953836 : if (root_array_available_ && options().enable_root_array_delta_access) {
134 1172 : intptr_t delta = RootRegisterOffsetForExternalReference(isolate(), source);
135 1172 : if (is_int32(delta)) {
136 2344 : leaq(destination, Operand(kRootRegister, static_cast<int32_t>(delta)));
137 1172 : return;
138 : }
139 : }
140 : // Safe code.
141 : if (FLAG_embedded_builtins) {
142 952664 : if (root_array_available_ && options().isolate_independent_code) {
143 45528 : IndirectLoadExternalReference(destination, source);
144 45528 : return;
145 : }
146 : }
147 907136 : Move(destination, source);
148 : }
149 :
150 1148479 : Operand TurboAssembler::ExternalReferenceAsOperand(ExternalReference reference,
151 : Register scratch) {
152 1148479 : if (root_array_available_ && options().enable_root_array_delta_access) {
153 : int64_t delta =
154 3596 : RootRegisterOffsetForExternalReference(isolate(), reference);
155 3596 : if (is_int32(delta)) {
156 3596 : return Operand(kRootRegister, static_cast<int32_t>(delta));
157 : }
158 : }
159 1144883 : if (root_array_available_ && options().isolate_independent_code) {
160 91504 : if (IsAddressableThroughRootRegister(isolate(), reference)) {
161 : // Some external references can be efficiently loaded as an offset from
162 : // kRootRegister.
163 : intptr_t offset =
164 90888 : RootRegisterOffsetForExternalReference(isolate(), reference);
165 90888 : CHECK(is_int32(offset));
166 90888 : return Operand(kRootRegister, static_cast<int32_t>(offset));
167 : } else {
168 : // Otherwise, do a memory load from the external reference table.
169 1232 : movq(scratch, Operand(kRootRegister,
170 : RootRegisterOffsetForExternalReferenceTableEntry(
171 : isolate(), reference)));
172 616 : return Operand(scratch, 0);
173 : }
174 : }
175 1053379 : Move(scratch, reference);
176 1053380 : return Operand(scratch, 0);
177 : }
178 :
179 112 : void MacroAssembler::PushAddress(ExternalReference source) {
180 112 : LoadAddress(kScratchRegister, source);
181 : Push(kScratchRegister);
182 112 : }
183 :
184 1946833 : void TurboAssembler::LoadRoot(Register destination, RootIndex index) {
185 : DCHECK(root_array_available_);
186 3893672 : movq(destination,
187 : Operand(kRootRegister, RootRegisterOffsetForRootIndex(index)));
188 1946839 : }
189 :
190 672 : void MacroAssembler::PushRoot(RootIndex index) {
191 : DCHECK(root_array_available_);
192 1344 : Push(Operand(kRootRegister, RootRegisterOffsetForRootIndex(index)));
193 672 : }
194 :
195 564316 : void TurboAssembler::CompareRoot(Register with, RootIndex index) {
196 : DCHECK(root_array_available_);
197 564316 : if (IsInRange(index, RootIndex::kFirstStrongOrReadOnlyRoot,
198 : RootIndex::kLastStrongOrReadOnlyRoot)) {
199 2016 : cmp_tagged(with,
200 1008 : Operand(kRootRegister, RootRegisterOffsetForRootIndex(index)));
201 : } else {
202 : // Some smi roots contain system pointer size values like stack limits.
203 563308 : cmpq(with, Operand(kRootRegister, RootRegisterOffsetForRootIndex(index)));
204 : }
205 564321 : }
206 :
207 0 : void TurboAssembler::CompareRoot(Operand with, RootIndex index) {
208 : DCHECK(root_array_available_);
209 : DCHECK(!with.AddressUsesRegister(kScratchRegister));
210 0 : LoadRoot(kScratchRegister, index);
211 0 : if (IsInRange(index, RootIndex::kFirstStrongOrReadOnlyRoot,
212 : RootIndex::kLastStrongOrReadOnlyRoot)) {
213 0 : cmp_tagged(with, kScratchRegister);
214 : } else {
215 : // Some smi roots contain system pointer size values like stack limits.
216 0 : cmpq(with, kScratchRegister);
217 : }
218 0 : }
219 :
220 593044 : void TurboAssembler::LoadTaggedPointerField(Register destination,
221 : Operand field_operand) {
222 : #ifdef V8_COMPRESS_POINTERS
223 : DecompressTaggedPointer(destination, field_operand);
224 : #else
225 635100 : mov_tagged(destination, field_operand);
226 : #endif
227 593044 : }
228 :
229 336 : void TurboAssembler::LoadAnyTaggedField(Register destination,
230 : Operand field_operand,
231 : Register scratch) {
232 : #ifdef V8_COMPRESS_POINTERS
233 : DecompressAnyTagged(destination, field_operand, scratch);
234 : #else
235 336 : mov_tagged(destination, field_operand);
236 : #endif
237 336 : }
238 :
239 112 : void TurboAssembler::PushTaggedPointerField(Operand field_operand,
240 : Register scratch) {
241 : #ifdef V8_COMPRESS_POINTERS
242 : DCHECK(!field_operand.AddressUsesRegister(scratch));
243 : DecompressTaggedPointer(scratch, field_operand);
244 : Push(scratch);
245 : #else
246 : Push(field_operand);
247 : #endif
248 112 : }
249 :
250 112 : void TurboAssembler::PushTaggedAnyField(Operand field_operand,
251 : Register scratch1, Register scratch2) {
252 : #ifdef V8_COMPRESS_POINTERS
253 : DCHECK(!AreAliased(scratch1, scratch2));
254 : DCHECK(!field_operand.AddressUsesRegister(scratch1));
255 : DCHECK(!field_operand.AddressUsesRegister(scratch2));
256 : DecompressAnyTagged(scratch1, field_operand, scratch2);
257 : Push(scratch1);
258 : #else
259 : Push(field_operand);
260 : #endif
261 112 : }
262 :
263 280 : void TurboAssembler::SmiUntagField(Register dst, Operand src) {
264 280 : SmiUntag(dst, src);
265 280 : }
266 :
267 0 : void TurboAssembler::StoreTaggedField(Operand dst_field_operand,
268 : Immediate value) {
269 : #ifdef V8_COMPRESS_POINTERS
270 : RecordComment("[ StoreTagged");
271 : movl(dst_field_operand, value);
272 : RecordComment("]");
273 : #else
274 0 : movq(dst_field_operand, value);
275 : #endif
276 0 : }
277 :
278 321680 : void TurboAssembler::StoreTaggedField(Operand dst_field_operand,
279 : Register value) {
280 : #ifdef V8_COMPRESS_POINTERS
281 : RecordComment("[ StoreTagged");
282 : movl(dst_field_operand, value);
283 : RecordComment("]");
284 : #else
285 321680 : movq(dst_field_operand, value);
286 : #endif
287 321680 : }
288 :
289 0 : void TurboAssembler::DecompressTaggedSigned(Register destination,
290 : Operand field_operand) {
291 0 : RecordComment("[ DecompressTaggedSigned");
292 0 : movsxlq(destination, field_operand);
293 0 : RecordComment("]");
294 0 : }
295 :
296 0 : void TurboAssembler::DecompressTaggedPointer(Register destination,
297 : Operand field_operand) {
298 0 : RecordComment("[ DecompressTaggedPointer");
299 0 : movsxlq(destination, field_operand);
300 : addq(destination, kRootRegister);
301 0 : RecordComment("]");
302 0 : }
303 :
304 0 : void TurboAssembler::DecompressAnyTagged(Register destination,
305 : Operand field_operand,
306 : Register scratch) {
307 : DCHECK(!AreAliased(destination, scratch));
308 0 : RecordComment("[ DecompressAnyTagged");
309 0 : movsxlq(destination, field_operand);
310 : if (kUseBranchlessPtrDecompression) {
311 : // Branchlessly compute |masked_root|:
312 : // masked_root = HAS_SMI_TAG(destination) ? 0 : kRootRegister;
313 : STATIC_ASSERT((kSmiTagSize == 1) && (kSmiTag < 32));
314 0 : Register masked_root = scratch;
315 : movl(masked_root, destination);
316 : andl(masked_root, Immediate(kSmiTagMask));
317 : negq(masked_root);
318 : andq(masked_root, kRootRegister);
319 : // Now this add operation will either leave the value unchanged if it is
320 : // a smi or add the isolate root if it is a heap object.
321 : addq(destination, masked_root);
322 : } else {
323 : Label done;
324 : JumpIfSmi(destination, &done);
325 : addq(destination, kRootRegister);
326 : bind(&done);
327 : }
328 0 : RecordComment("]");
329 0 : }
330 :
331 112 : void MacroAssembler::RecordWriteField(Register object, int offset,
332 : Register value, Register dst,
333 : SaveFPRegsMode save_fp,
334 : RememberedSetAction remembered_set_action,
335 : SmiCheck smi_check) {
336 : // First, check if a write barrier is even needed. The tests below
337 : // catch stores of Smis.
338 112 : Label done;
339 :
340 : // Skip barrier if writing a smi.
341 112 : if (smi_check == INLINE_SMI_CHECK) {
342 56 : JumpIfSmi(value, &done);
343 : }
344 :
345 : // Although the object register is tagged, the offset is relative to the start
346 : // of the object, so the offset must be a multiple of kTaggedSize.
347 : DCHECK(IsAligned(offset, kTaggedSize));
348 :
349 112 : leaq(dst, FieldOperand(object, offset));
350 112 : if (emit_debug_code()) {
351 0 : Label ok;
352 0 : testb(dst, Immediate(kTaggedSize - 1));
353 0 : j(zero, &ok, Label::kNear);
354 0 : int3();
355 0 : bind(&ok);
356 : }
357 :
358 : RecordWrite(object, dst, value, save_fp, remembered_set_action,
359 112 : OMIT_SMI_CHECK);
360 :
361 112 : bind(&done);
362 :
363 : // Clobber clobbered input registers when running with the debug-code flag
364 : // turned on to provoke errors.
365 112 : if (emit_debug_code()) {
366 : Move(value, kZapValue, RelocInfo::NONE);
367 : Move(dst, kZapValue, RelocInfo::NONE);
368 : }
369 112 : }
370 :
371 321675 : void TurboAssembler::SaveRegisters(RegList registers) {
372 : DCHECK_GT(NumRegs(registers), 0);
373 10615445 : for (int i = 0; i < Register::kNumRegisters; ++i) {
374 5146879 : if ((registers >> i) & 1u) {
375 1608399 : pushq(Register::from_code(i));
376 : }
377 : }
378 321681 : }
379 :
380 321683 : void TurboAssembler::RestoreRegisters(RegList registers) {
381 : DCHECK_GT(NumRegs(registers), 0);
382 10615445 : for (int i = Register::kNumRegisters - 1; i >= 0; --i) {
383 5146883 : if ((registers >> i) & 1u) {
384 1608403 : popq(Register::from_code(i));
385 : }
386 : }
387 321681 : }
388 :
389 112 : void TurboAssembler::CallEphemeronKeyBarrier(Register object, Register address,
390 : SaveFPRegsMode fp_mode) {
391 : EphemeronKeyBarrierDescriptor descriptor;
392 : RegList registers = descriptor.allocatable_registers();
393 :
394 112 : SaveRegisters(registers);
395 :
396 : Register object_parameter(
397 112 : descriptor.GetRegisterParameter(EphemeronKeyBarrierDescriptor::kObject));
398 : Register slot_parameter(descriptor.GetRegisterParameter(
399 112 : EphemeronKeyBarrierDescriptor::kSlotAddress));
400 : Register fp_mode_parameter(
401 112 : descriptor.GetRegisterParameter(EphemeronKeyBarrierDescriptor::kFPMode));
402 :
403 112 : MovePair(slot_parameter, address, object_parameter, object);
404 112 : Smi smi_fm = Smi::FromEnum(fp_mode);
405 112 : Move(fp_mode_parameter, smi_fm);
406 112 : Call(isolate()->builtins()->builtin_handle(Builtins::kEphemeronKeyBarrier),
407 112 : RelocInfo::CODE_TARGET);
408 :
409 112 : RestoreRegisters(registers);
410 112 : }
411 :
412 321284 : void TurboAssembler::CallRecordWriteStub(
413 : Register object, Register address,
414 : RememberedSetAction remembered_set_action, SaveFPRegsMode fp_mode) {
415 321284 : CallRecordWriteStub(
416 : object, address, remembered_set_action, fp_mode,
417 : isolate()->builtins()->builtin_handle(Builtins::kRecordWrite),
418 321284 : kNullAddress);
419 321284 : }
420 :
421 284 : void TurboAssembler::CallRecordWriteStub(
422 : Register object, Register address,
423 : RememberedSetAction remembered_set_action, SaveFPRegsMode fp_mode,
424 : Address wasm_target) {
425 : CallRecordWriteStub(object, address, remembered_set_action, fp_mode,
426 284 : Handle<Code>::null(), wasm_target);
427 286 : }
428 :
429 321568 : void TurboAssembler::CallRecordWriteStub(
430 : Register object, Register address,
431 : RememberedSetAction remembered_set_action, SaveFPRegsMode fp_mode,
432 : Handle<Code> code_target, Address wasm_target) {
433 : DCHECK_NE(code_target.is_null(), wasm_target == kNullAddress);
434 :
435 : RecordWriteDescriptor descriptor;
436 : RegList registers = descriptor.allocatable_registers();
437 :
438 321568 : SaveRegisters(registers);
439 :
440 : Register object_parameter(
441 321570 : descriptor.GetRegisterParameter(RecordWriteDescriptor::kObject));
442 : Register slot_parameter(
443 321570 : descriptor.GetRegisterParameter(RecordWriteDescriptor::kSlot));
444 : Register remembered_set_parameter(
445 : descriptor.GetRegisterParameter(RecordWriteDescriptor::kRememberedSet));
446 : Register fp_mode_parameter(
447 : descriptor.GetRegisterParameter(RecordWriteDescriptor::kFPMode));
448 :
449 : // Prepare argument registers for calling RecordWrite
450 : // slot_parameter <= address
451 : // object_parameter <= object
452 321570 : MovePair(slot_parameter, address, object_parameter, object);
453 :
454 : Smi smi_rsa = Smi::FromEnum(remembered_set_action);
455 : Smi smi_fm = Smi::FromEnum(fp_mode);
456 321569 : Move(remembered_set_parameter, smi_rsa);
457 321570 : if (smi_rsa != smi_fm) {
458 278011 : Move(fp_mode_parameter, smi_fm);
459 : } else {
460 43559 : movq(fp_mode_parameter, remembered_set_parameter);
461 : }
462 321570 : if (code_target.is_null()) {
463 : // Use {near_call} for direct Wasm call within a module.
464 286 : near_call(wasm_target, RelocInfo::WASM_STUB_CALL);
465 : } else {
466 321284 : Call(code_target, RelocInfo::CODE_TARGET);
467 : }
468 :
469 321568 : RestoreRegisters(registers);
470 321569 : }
471 :
472 112 : void MacroAssembler::RecordWrite(Register object, Register address,
473 : Register value, SaveFPRegsMode fp_mode,
474 : RememberedSetAction remembered_set_action,
475 : SmiCheck smi_check) {
476 : DCHECK(object != value);
477 : DCHECK(object != address);
478 : DCHECK(value != address);
479 112 : AssertNotSmi(object);
480 :
481 168 : if (remembered_set_action == OMIT_REMEMBERED_SET &&
482 56 : !FLAG_incremental_marking) {
483 0 : return;
484 : }
485 :
486 112 : if (emit_debug_code()) {
487 0 : Label ok;
488 0 : cmp_tagged(value, Operand(address, 0));
489 0 : j(equal, &ok, Label::kNear);
490 0 : int3();
491 0 : bind(&ok);
492 : }
493 :
494 : // First, check if a write barrier is even needed. The tests below
495 : // catch stores of smis and stores into the young generation.
496 112 : Label done;
497 :
498 112 : if (smi_check == INLINE_SMI_CHECK) {
499 : // Skip barrier if writing a smi.
500 0 : JumpIfSmi(value, &done);
501 : }
502 :
503 112 : CheckPageFlag(value,
504 : value, // Used as scratch.
505 : MemoryChunk::kPointersToHereAreInterestingMask, zero, &done,
506 112 : Label::kNear);
507 :
508 : CheckPageFlag(object,
509 : value, // Used as scratch.
510 : MemoryChunk::kPointersFromHereAreInterestingMask,
511 : zero,
512 : &done,
513 112 : Label::kNear);
514 :
515 112 : CallRecordWriteStub(object, address, remembered_set_action, fp_mode);
516 :
517 112 : bind(&done);
518 :
519 : // Clobber clobbered registers when running with the debug-code flag
520 : // turned on to provoke errors.
521 112 : if (emit_debug_code()) {
522 : Move(address, kZapValue, RelocInfo::NONE);
523 : Move(value, kZapValue, RelocInfo::NONE);
524 : }
525 : }
526 :
527 121 : void TurboAssembler::Assert(Condition cc, AbortReason reason) {
528 121 : if (emit_debug_code()) Check(cc, reason);
529 121 : }
530 :
531 320908 : void TurboAssembler::AssertUnreachable(AbortReason reason) {
532 320908 : if (emit_debug_code()) Abort(reason);
533 320908 : }
534 :
535 180 : void TurboAssembler::Check(Condition cc, AbortReason reason) {
536 180 : Label L;
537 180 : j(cc, &L, Label::kNear);
538 180 : Abort(reason);
539 : // Control will not return here.
540 180 : bind(&L);
541 180 : }
542 :
543 0 : void TurboAssembler::CheckStackAlignment() {
544 0 : int frame_alignment = base::OS::ActivationFrameAlignment();
545 0 : int frame_alignment_mask = frame_alignment - 1;
546 0 : if (frame_alignment > kSystemPointerSize) {
547 : DCHECK(base::bits::IsPowerOfTwo(frame_alignment));
548 0 : Label alignment_as_expected;
549 0 : testq(rsp, Immediate(frame_alignment_mask));
550 0 : j(zero, &alignment_as_expected, Label::kNear);
551 : // Abort if stack is not aligned.
552 0 : int3();
553 0 : bind(&alignment_as_expected);
554 : }
555 0 : }
556 :
557 4893 : void TurboAssembler::Abort(AbortReason reason) {
558 : #ifdef DEBUG
559 : const char* msg = GetAbortReason(reason);
560 : RecordComment("Abort message: ");
561 : RecordComment(msg);
562 : #endif
563 :
564 : // Avoid emitting call to builtin if requested.
565 4893 : if (trap_on_abort()) {
566 0 : int3();
567 0 : return;
568 : }
569 :
570 4893 : if (should_abort_hard()) {
571 : // We don't care if we constructed a frame. Just pretend we did.
572 10 : FrameScope assume_frame(this, StackFrame::NONE);
573 10 : movl(arg_reg_1, Immediate(static_cast<int>(reason)));
574 10 : PrepareCallCFunction(1);
575 10 : LoadAddress(rax, ExternalReference::abort_with_reason());
576 10 : call(rax);
577 : return;
578 : }
579 :
580 4883 : Move(rdx, Smi::FromInt(static_cast<int>(reason)));
581 :
582 4883 : if (!has_frame()) {
583 : // We don't actually want to generate a pile of code for this, so just
584 : // claim there is a stack frame, without generating one.
585 56 : FrameScope scope(this, StackFrame::NONE);
586 56 : Call(BUILTIN_CODE(isolate(), Abort), RelocInfo::CODE_TARGET);
587 : } else {
588 4827 : Call(BUILTIN_CODE(isolate(), Abort), RelocInfo::CODE_TARGET);
589 : }
590 : // Control will not return here.
591 4883 : int3();
592 : }
593 :
594 74 : void TurboAssembler::CallRuntimeWithCEntry(Runtime::FunctionId fid,
595 : Register centry) {
596 74 : const Runtime::Function* f = Runtime::FunctionForId(fid);
597 : // TODO(1236192): Most runtime routines don't need the number of
598 : // arguments passed in because it is constant. At some point we
599 : // should remove this need and make the runtime routine entry code
600 : // smarter.
601 74 : Set(rax, f->nargs);
602 74 : LoadAddress(rbx, ExternalReference::Create(f));
603 : DCHECK(!AreAliased(centry, rax, rbx));
604 : DCHECK(centry == rcx);
605 74 : CallCodeObject(centry);
606 75 : }
607 :
608 1960 : void MacroAssembler::CallRuntime(const Runtime::Function* f,
609 : int num_arguments,
610 : SaveFPRegsMode save_doubles) {
611 : // If the expected number of arguments of the runtime function is
612 : // constant, we check that the actual number of arguments match the
613 : // expectation.
614 1960 : CHECK(f->nargs < 0 || f->nargs == num_arguments);
615 :
616 : // TODO(1236192): Most runtime routines don't need the number of
617 : // arguments passed in because it is constant. At some point we
618 : // should remove this need and make the runtime routine entry code
619 : // smarter.
620 1960 : Set(rax, num_arguments);
621 1960 : LoadAddress(rbx, ExternalReference::Create(f));
622 : Handle<Code> code =
623 1960 : CodeFactory::CEntry(isolate(), f->result_size, save_doubles);
624 1960 : Call(code, RelocInfo::CODE_TARGET);
625 1960 : }
626 :
627 840 : void MacroAssembler::TailCallRuntime(Runtime::FunctionId fid) {
628 : // ----------- S t a t e -------------
629 : // -- rsp[0] : return address
630 : // -- rsp[8] : argument num_arguments - 1
631 : // ...
632 : // -- rsp[8 * num_arguments] : argument 0 (receiver)
633 : //
634 : // For runtime functions with variable arguments:
635 : // -- rax : number of arguments
636 : // -----------------------------------
637 :
638 840 : const Runtime::Function* function = Runtime::FunctionForId(fid);
639 : DCHECK_EQ(1, function->result_size);
640 840 : if (function->nargs >= 0) {
641 840 : Set(rax, function->nargs);
642 : }
643 840 : JumpToExternalReference(ExternalReference::Create(fid));
644 840 : }
645 :
646 840 : void MacroAssembler::JumpToExternalReference(const ExternalReference& ext,
647 : bool builtin_exit_frame) {
648 : // Set the entry point and jump to the C entry runtime stub.
649 840 : LoadAddress(rbx, ext);
650 : Handle<Code> code = CodeFactory::CEntry(isolate(), 1, kDontSaveFPRegs,
651 840 : kArgvOnStack, builtin_exit_frame);
652 840 : Jump(code, RelocInfo::CODE_TARGET);
653 840 : }
654 :
655 : static constexpr Register saved_regs[] = {rax, rcx, rdx, rbx, rbp, rsi,
656 : rdi, r8, r9, r10, r11};
657 :
658 : static constexpr int kNumberOfSavedRegs = sizeof(saved_regs) / sizeof(Register);
659 :
660 900 : int TurboAssembler::RequiredStackSizeForCallerSaved(SaveFPRegsMode fp_mode,
661 : Register exclusion1,
662 : Register exclusion2,
663 : Register exclusion3) const {
664 : int bytes = 0;
665 20700 : for (int i = 0; i < kNumberOfSavedRegs; i++) {
666 9900 : Register reg = saved_regs[i];
667 9900 : if (reg != exclusion1 && reg != exclusion2 && reg != exclusion3) {
668 9000 : bytes += kSystemPointerSize;
669 : }
670 : }
671 :
672 : // R12 to r15 are callee save on all platforms.
673 900 : if (fp_mode == kSaveFPRegs) {
674 452 : bytes += kDoubleSize * XMMRegister::kNumRegisters;
675 : }
676 :
677 900 : return bytes;
678 : }
679 :
680 900 : int TurboAssembler::PushCallerSaved(SaveFPRegsMode fp_mode, Register exclusion1,
681 : Register exclusion2, Register exclusion3) {
682 : // We don't allow a GC during a store buffer overflow so there is no need to
683 : // store the registers in any particular way, but we do have to store and
684 : // restore them.
685 : int bytes = 0;
686 20700 : for (int i = 0; i < kNumberOfSavedRegs; i++) {
687 9900 : Register reg = saved_regs[i];
688 9900 : if (reg != exclusion1 && reg != exclusion2 && reg != exclusion3) {
689 9000 : pushq(reg);
690 9000 : bytes += kSystemPointerSize;
691 : }
692 : }
693 :
694 : // R12 to r15 are callee save on all platforms.
695 900 : if (fp_mode == kSaveFPRegs) {
696 : int delta = kDoubleSize * XMMRegister::kNumRegisters;
697 452 : subq(rsp, Immediate(delta));
698 14916 : for (int i = 0; i < XMMRegister::kNumRegisters; i++) {
699 : XMMRegister reg = XMMRegister::from_code(i);
700 14464 : Movsd(Operand(rsp, i * kDoubleSize), reg);
701 : }
702 452 : bytes += delta;
703 : }
704 :
705 900 : return bytes;
706 : }
707 :
708 900 : int TurboAssembler::PopCallerSaved(SaveFPRegsMode fp_mode, Register exclusion1,
709 : Register exclusion2, Register exclusion3) {
710 : int bytes = 0;
711 900 : if (fp_mode == kSaveFPRegs) {
712 14916 : for (int i = 0; i < XMMRegister::kNumRegisters; i++) {
713 : XMMRegister reg = XMMRegister::from_code(i);
714 14464 : Movsd(reg, Operand(rsp, i * kDoubleSize));
715 : }
716 : int delta = kDoubleSize * XMMRegister::kNumRegisters;
717 452 : addq(rsp, Immediate(kDoubleSize * XMMRegister::kNumRegisters));
718 : bytes += delta;
719 : }
720 :
721 20700 : for (int i = kNumberOfSavedRegs - 1; i >= 0; i--) {
722 9900 : Register reg = saved_regs[i];
723 9900 : if (reg != exclusion1 && reg != exclusion2 && reg != exclusion3) {
724 9000 : popq(reg);
725 9000 : bytes += kSystemPointerSize;
726 : }
727 : }
728 :
729 900 : return bytes;
730 : }
731 :
732 9154 : void TurboAssembler::Cvtss2sd(XMMRegister dst, XMMRegister src) {
733 9154 : if (CpuFeatures::IsSupported(AVX)) {
734 : CpuFeatureScope scope(this, AVX);
735 9138 : vcvtss2sd(dst, src, src);
736 : } else {
737 16 : cvtss2sd(dst, src);
738 : }
739 9153 : }
740 :
741 11349 : void TurboAssembler::Cvtss2sd(XMMRegister dst, Operand src) {
742 11349 : if (CpuFeatures::IsSupported(AVX)) {
743 : CpuFeatureScope scope(this, AVX);
744 11349 : vcvtss2sd(dst, dst, src);
745 : } else {
746 0 : cvtss2sd(dst, src);
747 : }
748 11349 : }
749 :
750 6174 : void TurboAssembler::Cvtsd2ss(XMMRegister dst, XMMRegister src) {
751 6174 : if (CpuFeatures::IsSupported(AVX)) {
752 : CpuFeatureScope scope(this, AVX);
753 6155 : vcvtsd2ss(dst, src, src);
754 : } else {
755 19 : cvtsd2ss(dst, src);
756 : }
757 6174 : }
758 :
759 11852 : void TurboAssembler::Cvtsd2ss(XMMRegister dst, Operand src) {
760 11852 : if (CpuFeatures::IsSupported(AVX)) {
761 : CpuFeatureScope scope(this, AVX);
762 11852 : vcvtsd2ss(dst, dst, src);
763 : } else {
764 0 : cvtsd2ss(dst, src);
765 : }
766 11852 : }
767 :
768 375418 : void TurboAssembler::Cvtlsi2sd(XMMRegister dst, Register src) {
769 375418 : if (CpuFeatures::IsSupported(AVX)) {
770 : CpuFeatureScope scope(this, AVX);
771 373392 : vxorpd(dst, dst, dst);
772 : vcvtlsi2sd(dst, dst, src);
773 : } else {
774 2026 : xorpd(dst, dst);
775 2026 : cvtlsi2sd(dst, src);
776 : }
777 375421 : }
778 :
779 3858 : void TurboAssembler::Cvtlsi2sd(XMMRegister dst, Operand src) {
780 3858 : if (CpuFeatures::IsSupported(AVX)) {
781 : CpuFeatureScope scope(this, AVX);
782 3856 : vxorpd(dst, dst, dst);
783 : vcvtlsi2sd(dst, dst, src);
784 : } else {
785 2 : xorpd(dst, dst);
786 2 : cvtlsi2sd(dst, src);
787 : }
788 3858 : }
789 :
790 1095 : void TurboAssembler::Cvtlsi2ss(XMMRegister dst, Register src) {
791 1095 : if (CpuFeatures::IsSupported(AVX)) {
792 : CpuFeatureScope scope(this, AVX);
793 1081 : vxorps(dst, dst, dst);
794 : vcvtlsi2ss(dst, dst, src);
795 : } else {
796 14 : xorps(dst, dst);
797 14 : cvtlsi2ss(dst, src);
798 : }
799 1095 : }
800 :
801 8 : void TurboAssembler::Cvtlsi2ss(XMMRegister dst, Operand src) {
802 8 : if (CpuFeatures::IsSupported(AVX)) {
803 : CpuFeatureScope scope(this, AVX);
804 8 : vxorps(dst, dst, dst);
805 : vcvtlsi2ss(dst, dst, src);
806 : } else {
807 0 : xorps(dst, dst);
808 0 : cvtlsi2ss(dst, src);
809 : }
810 8 : }
811 :
812 291 : void TurboAssembler::Cvtqsi2ss(XMMRegister dst, Register src) {
813 291 : if (CpuFeatures::IsSupported(AVX)) {
814 : CpuFeatureScope scope(this, AVX);
815 291 : vxorps(dst, dst, dst);
816 : vcvtqsi2ss(dst, dst, src);
817 : } else {
818 0 : xorps(dst, dst);
819 0 : cvtqsi2ss(dst, src);
820 : }
821 291 : }
822 :
823 0 : void TurboAssembler::Cvtqsi2ss(XMMRegister dst, Operand src) {
824 0 : if (CpuFeatures::IsSupported(AVX)) {
825 : CpuFeatureScope scope(this, AVX);
826 0 : vxorps(dst, dst, dst);
827 : vcvtqsi2ss(dst, dst, src);
828 : } else {
829 0 : xorps(dst, dst);
830 0 : cvtqsi2ss(dst, src);
831 : }
832 0 : }
833 :
834 20519 : void TurboAssembler::Cvtqsi2sd(XMMRegister dst, Register src) {
835 20519 : if (CpuFeatures::IsSupported(AVX)) {
836 : CpuFeatureScope scope(this, AVX);
837 20203 : vxorpd(dst, dst, dst);
838 : vcvtqsi2sd(dst, dst, src);
839 : } else {
840 316 : xorpd(dst, dst);
841 316 : cvtqsi2sd(dst, src);
842 : }
843 20533 : }
844 :
845 2000 : void TurboAssembler::Cvtqsi2sd(XMMRegister dst, Operand src) {
846 2000 : if (CpuFeatures::IsSupported(AVX)) {
847 : CpuFeatureScope scope(this, AVX);
848 1966 : vxorpd(dst, dst, dst);
849 : vcvtqsi2sd(dst, dst, src);
850 : } else {
851 34 : xorpd(dst, dst);
852 34 : cvtqsi2sd(dst, src);
853 : }
854 2000 : }
855 :
856 88 : void TurboAssembler::Cvtlui2ss(XMMRegister dst, Register src) {
857 : // Zero-extend the 32 bit value to 64 bit.
858 88 : movl(kScratchRegister, src);
859 88 : Cvtqsi2ss(dst, kScratchRegister);
860 88 : }
861 :
862 0 : void TurboAssembler::Cvtlui2ss(XMMRegister dst, Operand src) {
863 : // Zero-extend the 32 bit value to 64 bit.
864 0 : movl(kScratchRegister, src);
865 0 : Cvtqsi2ss(dst, kScratchRegister);
866 0 : }
867 :
868 391 : void TurboAssembler::Cvtlui2sd(XMMRegister dst, Register src) {
869 : // Zero-extend the 32 bit value to 64 bit.
870 391 : movl(kScratchRegister, src);
871 391 : Cvtqsi2sd(dst, kScratchRegister);
872 391 : }
873 :
874 10962 : void TurboAssembler::Cvtlui2sd(XMMRegister dst, Operand src) {
875 : // Zero-extend the 32 bit value to 64 bit.
876 10962 : movl(kScratchRegister, src);
877 10962 : Cvtqsi2sd(dst, kScratchRegister);
878 10962 : }
879 :
880 45 : void TurboAssembler::Cvtqui2ss(XMMRegister dst, Register src) {
881 45 : Label done;
882 45 : Cvtqsi2ss(dst, src);
883 45 : testq(src, src);
884 45 : j(positive, &done, Label::kNear);
885 :
886 : // Compute {src/2 | (src&1)} (retain the LSB to avoid rounding errors).
887 45 : if (src != kScratchRegister) movq(kScratchRegister, src);
888 : shrq(kScratchRegister, Immediate(1));
889 : // The LSB is shifted into CF. If it is set, set the LSB in {tmp}.
890 45 : Label msb_not_set;
891 45 : j(not_carry, &msb_not_set, Label::kNear);
892 : orq(kScratchRegister, Immediate(1));
893 45 : bind(&msb_not_set);
894 45 : Cvtqsi2ss(dst, kScratchRegister);
895 45 : addss(dst, dst);
896 45 : bind(&done);
897 45 : }
898 :
899 0 : void TurboAssembler::Cvtqui2ss(XMMRegister dst, Operand src) {
900 0 : movq(kScratchRegister, src);
901 0 : Cvtqui2ss(dst, kScratchRegister);
902 0 : }
903 :
904 3660 : void TurboAssembler::Cvtqui2sd(XMMRegister dst, Register src) {
905 3660 : Label done;
906 3660 : Cvtqsi2sd(dst, src);
907 3659 : testq(src, src);
908 3660 : j(positive, &done, Label::kNear);
909 :
910 : // Compute {src/2 | (src&1)} (retain the LSB to avoid rounding errors).
911 3660 : if (src != kScratchRegister) movq(kScratchRegister, src);
912 : shrq(kScratchRegister, Immediate(1));
913 : // The LSB is shifted into CF. If it is set, set the LSB in {tmp}.
914 3660 : Label msb_not_set;
915 3660 : j(not_carry, &msb_not_set, Label::kNear);
916 : orq(kScratchRegister, Immediate(1));
917 3660 : bind(&msb_not_set);
918 3660 : Cvtqsi2sd(dst, kScratchRegister);
919 3660 : addsd(dst, dst);
920 3660 : bind(&done);
921 3660 : }
922 :
923 1232 : void TurboAssembler::Cvtqui2sd(XMMRegister dst, Operand src) {
924 1232 : movq(kScratchRegister, src);
925 1232 : Cvtqui2sd(dst, kScratchRegister);
926 1232 : }
927 :
928 435 : void TurboAssembler::Cvttss2si(Register dst, XMMRegister src) {
929 435 : if (CpuFeatures::IsSupported(AVX)) {
930 : CpuFeatureScope scope(this, AVX);
931 435 : vcvttss2si(dst, src);
932 : } else {
933 0 : cvttss2si(dst, src);
934 : }
935 435 : }
936 :
937 0 : void TurboAssembler::Cvttss2si(Register dst, Operand src) {
938 0 : if (CpuFeatures::IsSupported(AVX)) {
939 : CpuFeatureScope scope(this, AVX);
940 0 : vcvttss2si(dst, src);
941 : } else {
942 0 : cvttss2si(dst, src);
943 : }
944 0 : }
945 :
946 107968 : void TurboAssembler::Cvttsd2si(Register dst, XMMRegister src) {
947 107968 : if (CpuFeatures::IsSupported(AVX)) {
948 : CpuFeatureScope scope(this, AVX);
949 107446 : vcvttsd2si(dst, src);
950 : } else {
951 522 : cvttsd2si(dst, src);
952 : }
953 107968 : }
954 :
955 20274 : void TurboAssembler::Cvttsd2si(Register dst, Operand src) {
956 20274 : if (CpuFeatures::IsSupported(AVX)) {
957 : CpuFeatureScope scope(this, AVX);
958 20274 : vcvttsd2si(dst, src);
959 : } else {
960 0 : cvttsd2si(dst, src);
961 : }
962 20274 : }
963 :
964 278 : void TurboAssembler::Cvttss2siq(Register dst, XMMRegister src) {
965 278 : if (CpuFeatures::IsSupported(AVX)) {
966 : CpuFeatureScope scope(this, AVX);
967 278 : vcvttss2siq(dst, src);
968 : } else {
969 0 : cvttss2siq(dst, src);
970 : }
971 278 : }
972 :
973 0 : void TurboAssembler::Cvttss2siq(Register dst, Operand src) {
974 0 : if (CpuFeatures::IsSupported(AVX)) {
975 : CpuFeatureScope scope(this, AVX);
976 0 : vcvttss2siq(dst, src);
977 : } else {
978 0 : cvttss2siq(dst, src);
979 : }
980 0 : }
981 :
982 62330 : void TurboAssembler::Cvttsd2siq(Register dst, XMMRegister src) {
983 62330 : if (CpuFeatures::IsSupported(AVX)) {
984 : CpuFeatureScope scope(this, AVX);
985 61919 : vcvttsd2siq(dst, src);
986 : } else {
987 411 : cvttsd2siq(dst, src);
988 : }
989 62338 : }
990 :
991 1 : void TurboAssembler::Cvttsd2siq(Register dst, Operand src) {
992 1 : if (CpuFeatures::IsSupported(AVX)) {
993 : CpuFeatureScope scope(this, AVX);
994 1 : vcvttsd2siq(dst, src);
995 : } else {
996 0 : cvttsd2siq(dst, src);
997 : }
998 1 : }
999 :
1000 : namespace {
1001 : template <typename OperandOrXMMRegister, bool is_double>
1002 3058 : void ConvertFloatToUint64(TurboAssembler* tasm, Register dst,
1003 : OperandOrXMMRegister src, Label* fail) {
1004 3058 : Label success;
1005 : // There does not exist a native float-to-uint instruction, so we have to use
1006 : // a float-to-int, and postprocess the result.
1007 : if (is_double) {
1008 2991 : tasm->Cvttsd2siq(dst, src);
1009 : } else {
1010 67 : tasm->Cvttss2siq(dst, src);
1011 : }
1012 : // If the result of the conversion is positive, we are already done.
1013 3058 : tasm->testq(dst, dst);
1014 3058 : tasm->j(positive, &success);
1015 : // The result of the first conversion was negative, which means that the
1016 : // input value was not within the positive int64 range. We subtract 2^63
1017 : // and convert it again to see if it is within the uint64 range.
1018 : if (is_double) {
1019 : tasm->Move(kScratchDoubleReg, -9223372036854775808.0);
1020 2991 : tasm->addsd(kScratchDoubleReg, src);
1021 2991 : tasm->Cvttsd2siq(dst, kScratchDoubleReg);
1022 : } else {
1023 : tasm->Move(kScratchDoubleReg, -9223372036854775808.0f);
1024 68 : tasm->addss(kScratchDoubleReg, src);
1025 68 : tasm->Cvttss2siq(dst, kScratchDoubleReg);
1026 : }
1027 : tasm->testq(dst, dst);
1028 : // The only possible negative value here is 0x80000000000000000, which is
1029 : // used on x64 to indicate an integer overflow.
1030 3059 : tasm->j(negative, fail ? fail : &success);
1031 : // The input value is within uint64 range and the second conversion worked
1032 : // successfully, but we still have to undo the subtraction we did
1033 : // earlier.
1034 3059 : tasm->Set(kScratchRegister, 0x8000000000000000);
1035 : tasm->orq(dst, kScratchRegister);
1036 3059 : tasm->bind(&success);
1037 3059 : }
1038 : } // namespace
1039 :
1040 0 : void TurboAssembler::Cvttsd2uiq(Register dst, Operand src, Label* success) {
1041 0 : ConvertFloatToUint64<Operand, true>(this, dst, src, success);
1042 0 : }
1043 :
1044 2991 : void TurboAssembler::Cvttsd2uiq(Register dst, XMMRegister src, Label* success) {
1045 2991 : ConvertFloatToUint64<XMMRegister, true>(this, dst, src, success);
1046 2991 : }
1047 :
1048 0 : void TurboAssembler::Cvttss2uiq(Register dst, Operand src, Label* success) {
1049 0 : ConvertFloatToUint64<Operand, false>(this, dst, src, success);
1050 0 : }
1051 :
1052 68 : void TurboAssembler::Cvttss2uiq(Register dst, XMMRegister src, Label* success) {
1053 68 : ConvertFloatToUint64<XMMRegister, false>(this, dst, src, success);
1054 68 : }
1055 :
1056 2736475 : void TurboAssembler::Set(Register dst, int64_t x) {
1057 2736475 : if (x == 0) {
1058 868130 : xorl(dst, dst);
1059 1868345 : } else if (is_uint32(x)) {
1060 422368 : movl(dst, Immediate(static_cast<uint32_t>(x)));
1061 1445977 : } else if (is_int32(x)) {
1062 171430 : movq(dst, Immediate(static_cast<int32_t>(x)));
1063 : } else {
1064 1274547 : movq(dst, x);
1065 : }
1066 2736508 : }
1067 :
1068 13279 : void TurboAssembler::Set(Operand dst, intptr_t x) {
1069 13279 : if (is_int32(x)) {
1070 8780 : movq(dst, Immediate(static_cast<int32_t>(x)));
1071 : } else {
1072 4499 : Set(kScratchRegister, x);
1073 4499 : movq(dst, kScratchRegister);
1074 : }
1075 13279 : }
1076 :
1077 :
1078 : // ----------------------------------------------------------------------------
1079 : // Smi tagging, untagging and tag detection.
1080 :
1081 168 : Register TurboAssembler::GetSmiConstant(Smi source) {
1082 : STATIC_ASSERT(kSmiTag == 0);
1083 : int value = source->value();
1084 168 : if (value == 0) {
1085 0 : xorl(kScratchRegister, kScratchRegister);
1086 0 : return kScratchRegister;
1087 : }
1088 168 : Move(kScratchRegister, source);
1089 168 : return kScratchRegister;
1090 : }
1091 :
1092 2174020 : void TurboAssembler::Move(Register dst, Smi source) {
1093 : STATIC_ASSERT(kSmiTag == 0);
1094 : int value = source->value();
1095 2174020 : if (value == 0) {
1096 770206 : xorl(dst, dst);
1097 : } else {
1098 : Move(dst, source.ptr(), RelocInfo::NONE);
1099 : }
1100 2174027 : }
1101 :
1102 5651948 : void TurboAssembler::Move(Register dst, ExternalReference ext) {
1103 : if (FLAG_embedded_builtins) {
1104 5651948 : if (root_array_available_ && options().isolate_independent_code) {
1105 740600 : IndirectLoadExternalReference(dst, ext);
1106 740600 : return;
1107 : }
1108 : }
1109 4911348 : movq(dst, Immediate64(ext.address(), RelocInfo::EXTERNAL_REFERENCE));
1110 : }
1111 :
1112 1246 : void MacroAssembler::SmiTag(Register dst, Register src) {
1113 : STATIC_ASSERT(kSmiTag == 0);
1114 1246 : if (dst != src) {
1115 305 : movq(dst, src);
1116 : }
1117 : DCHECK(SmiValuesAre32Bits() || SmiValuesAre31Bits());
1118 1246 : shlq(dst, Immediate(kSmiShift));
1119 1246 : }
1120 :
1121 5176 : void TurboAssembler::SmiUntag(Register dst, Register src) {
1122 : STATIC_ASSERT(kSmiTag == 0);
1123 5176 : if (dst != src) {
1124 0 : movq(dst, src);
1125 : }
1126 : DCHECK(SmiValuesAre32Bits() || SmiValuesAre31Bits());
1127 5176 : sarq(dst, Immediate(kSmiShift));
1128 5176 : }
1129 :
1130 1848 : void TurboAssembler::SmiUntag(Register dst, Operand src) {
1131 : if (SmiValuesAre32Bits()) {
1132 3696 : movl(dst, Operand(src, kSmiShift / kBitsPerByte));
1133 : // Sign extend to 64-bit.
1134 1848 : movsxlq(dst, dst);
1135 : } else {
1136 : DCHECK(SmiValuesAre31Bits());
1137 : #ifdef V8_COMPRESS_POINTERS
1138 : movsxlq(dst, src);
1139 : #else
1140 : movq(dst, src);
1141 : #endif
1142 : sarq(dst, Immediate(kSmiShift));
1143 : }
1144 1848 : }
1145 :
1146 165 : void MacroAssembler::SmiCompare(Register smi1, Register smi2) {
1147 165 : AssertSmi(smi1);
1148 165 : AssertSmi(smi2);
1149 165 : cmp_tagged(smi1, smi2);
1150 165 : }
1151 :
1152 224 : void MacroAssembler::SmiCompare(Register dst, Smi src) {
1153 224 : AssertSmi(dst);
1154 224 : Cmp(dst, src);
1155 224 : }
1156 :
1157 224 : void MacroAssembler::Cmp(Register dst, Smi src) {
1158 : DCHECK_NE(dst, kScratchRegister);
1159 224 : if (src->value() == 0) {
1160 56 : test_tagged(dst, dst);
1161 : } else {
1162 168 : Register constant_reg = GetSmiConstant(src);
1163 168 : cmp_tagged(dst, constant_reg);
1164 : }
1165 224 : }
1166 :
1167 0 : void MacroAssembler::SmiCompare(Register dst, Operand src) {
1168 0 : AssertSmi(dst);
1169 0 : AssertSmi(src);
1170 0 : cmp_tagged(dst, src);
1171 0 : }
1172 :
1173 0 : void MacroAssembler::SmiCompare(Operand dst, Register src) {
1174 0 : AssertSmi(dst);
1175 0 : AssertSmi(src);
1176 0 : cmp_tagged(dst, src);
1177 0 : }
1178 :
1179 0 : void MacroAssembler::SmiCompare(Operand dst, Smi src) {
1180 0 : AssertSmi(dst);
1181 : if (SmiValuesAre32Bits()) {
1182 0 : cmpl(Operand(dst, kSmiShift / kBitsPerByte), Immediate(src->value()));
1183 : } else {
1184 : DCHECK(SmiValuesAre31Bits());
1185 : cmpl(dst, Immediate(src));
1186 : }
1187 0 : }
1188 :
1189 0 : void MacroAssembler::Cmp(Operand dst, Smi src) {
1190 : // The Operand cannot use the smi register.
1191 0 : Register smi_reg = GetSmiConstant(src);
1192 : DCHECK(!dst.AddressUsesRegister(smi_reg));
1193 0 : cmp_tagged(dst, smi_reg);
1194 0 : }
1195 :
1196 :
1197 40 : Condition TurboAssembler::CheckSmi(Register src) {
1198 : STATIC_ASSERT(kSmiTag == 0);
1199 299130 : testb(src, Immediate(kSmiTagMask));
1200 40 : return zero;
1201 : }
1202 :
1203 0 : Condition TurboAssembler::CheckSmi(Operand src) {
1204 : STATIC_ASSERT(kSmiTag == 0);
1205 0 : testb(src, Immediate(kSmiTagMask));
1206 0 : return zero;
1207 : }
1208 :
1209 299034 : void TurboAssembler::JumpIfSmi(Register src, Label* on_smi,
1210 : Label::Distance near_jump) {
1211 : Condition smi = CheckSmi(src);
1212 299034 : j(smi, on_smi, near_jump);
1213 299034 : }
1214 :
1215 56 : void MacroAssembler::JumpIfNotSmi(Register src,
1216 : Label* on_not_smi,
1217 : Label::Distance near_jump) {
1218 : Condition smi = CheckSmi(src);
1219 56 : j(NegateCondition(smi), on_not_smi, near_jump);
1220 56 : }
1221 :
1222 0 : void MacroAssembler::JumpIfNotSmi(Operand src, Label* on_not_smi,
1223 : Label::Distance near_jump) {
1224 : Condition smi = CheckSmi(src);
1225 0 : j(NegateCondition(smi), on_not_smi, near_jump);
1226 0 : }
1227 :
1228 0 : void MacroAssembler::SmiAddConstant(Operand dst, Smi constant) {
1229 0 : if (constant->value() != 0) {
1230 : if (SmiValuesAre32Bits()) {
1231 0 : addl(Operand(dst, kSmiShift / kBitsPerByte),
1232 0 : Immediate(constant->value()));
1233 : } else {
1234 : DCHECK(SmiValuesAre31Bits());
1235 : if (kTaggedSize == kInt64Size) {
1236 : // Sign-extend value after addition
1237 : movl(kScratchRegister, dst);
1238 : addl(kScratchRegister, Immediate(constant));
1239 : movsxlq(kScratchRegister, kScratchRegister);
1240 : movq(dst, kScratchRegister);
1241 : } else {
1242 : DCHECK_EQ(kTaggedSize, kInt32Size);
1243 : addl(dst, Immediate(constant));
1244 : }
1245 : }
1246 : }
1247 0 : }
1248 :
1249 568 : SmiIndex MacroAssembler::SmiToIndex(Register dst,
1250 : Register src,
1251 : int shift) {
1252 : if (SmiValuesAre32Bits()) {
1253 : DCHECK(is_uint6(shift));
1254 : // There is a possible optimization if shift is in the range 60-63, but that
1255 : // will (and must) never happen.
1256 568 : if (dst != src) {
1257 200 : movq(dst, src);
1258 : }
1259 568 : if (shift < kSmiShift) {
1260 568 : sarq(dst, Immediate(kSmiShift - shift));
1261 : } else {
1262 0 : shlq(dst, Immediate(shift - kSmiShift));
1263 : }
1264 568 : return SmiIndex(dst, times_1);
1265 : } else {
1266 : DCHECK(SmiValuesAre31Bits());
1267 : if (dst != src) {
1268 : mov_tagged(dst, src);
1269 : }
1270 : // We have to sign extend the index register to 64-bit as the SMI might
1271 : // be negative.
1272 : movsxlq(dst, dst);
1273 : if (shift < kSmiShift) {
1274 : sarq(dst, Immediate(kSmiShift - shift));
1275 : } else if (shift != kSmiShift) {
1276 : if (shift - kSmiShift <= static_cast<int>(times_8)) {
1277 : return SmiIndex(dst, static_cast<ScaleFactor>(shift - kSmiShift));
1278 : }
1279 : shlq(dst, Immediate(shift - kSmiShift));
1280 : }
1281 : return SmiIndex(dst, times_1);
1282 : }
1283 : }
1284 :
1285 56 : void TurboAssembler::Push(Smi source) {
1286 56 : intptr_t smi = static_cast<intptr_t>(source.ptr());
1287 56 : if (is_int32(smi)) {
1288 56 : Push(Immediate(static_cast<int32_t>(smi)));
1289 56 : return;
1290 : }
1291 0 : int first_byte_set = base::bits::CountTrailingZeros64(smi) / 8;
1292 0 : int last_byte_set = (63 - base::bits::CountLeadingZeros64(smi)) / 8;
1293 0 : if (first_byte_set == last_byte_set) {
1294 : // This sequence has only 7 bytes, compared to the 12 bytes below.
1295 : Push(Immediate(0));
1296 0 : movb(Operand(rsp, first_byte_set),
1297 0 : Immediate(static_cast<int8_t>(smi >> (8 * first_byte_set))));
1298 0 : return;
1299 : }
1300 0 : Register constant = GetSmiConstant(source);
1301 : Push(constant);
1302 : }
1303 :
1304 : // ----------------------------------------------------------------------------
1305 :
1306 728 : void TurboAssembler::Move(Register dst, Register src) {
1307 1052095 : if (dst != src) {
1308 633945 : movq(dst, src);
1309 : }
1310 728 : }
1311 :
1312 321680 : void TurboAssembler::MovePair(Register dst0, Register src0, Register dst1,
1313 : Register src1) {
1314 321680 : if (dst0 != src1) {
1315 : // Normal case: Writing to dst0 does not destroy src1.
1316 : Move(dst0, src0);
1317 : Move(dst1, src1);
1318 1755 : } else if (dst1 != src0) {
1319 : // Only dst0 and src1 are the same register,
1320 : // but writing to dst1 does not destroy src0.
1321 : Move(dst1, src1);
1322 : Move(dst0, src0);
1323 : } else {
1324 : // dst0 == src1, and dst1 == src0, a swap is required:
1325 : // dst0 \/ src0
1326 : // dst1 /\ src1
1327 14 : xchgq(dst0, dst1);
1328 : }
1329 321681 : }
1330 :
1331 1523104 : void TurboAssembler::MoveNumber(Register dst, double value) {
1332 : int32_t smi;
1333 1523104 : if (DoubleToSmiInteger(value, &smi)) {
1334 1483380 : Move(dst, Smi::FromInt(smi));
1335 : } else {
1336 39724 : movq_heap_number(dst, value);
1337 : }
1338 1523109 : }
1339 :
1340 169870 : void TurboAssembler::Move(XMMRegister dst, uint32_t src) {
1341 169870 : if (src == 0) {
1342 : Xorps(dst, dst);
1343 : } else {
1344 : unsigned nlz = base::bits::CountLeadingZeros(src);
1345 : unsigned ntz = base::bits::CountTrailingZeros(src);
1346 : unsigned pop = base::bits::CountPopulation(src);
1347 : DCHECK_NE(0u, pop);
1348 158711 : if (pop + ntz + nlz == 32) {
1349 : Pcmpeqd(dst, dst);
1350 70825 : if (ntz) Pslld(dst, static_cast<byte>(ntz + nlz));
1351 70830 : if (nlz) Psrld(dst, static_cast<byte>(nlz));
1352 : } else {
1353 87891 : movl(kScratchRegister, Immediate(src));
1354 : Movd(dst, kScratchRegister);
1355 : }
1356 : }
1357 169886 : }
1358 :
1359 465355 : void TurboAssembler::Move(XMMRegister dst, uint64_t src) {
1360 465355 : if (src == 0) {
1361 : Xorpd(dst, dst);
1362 : } else {
1363 : unsigned nlz = base::bits::CountLeadingZeros(src);
1364 : unsigned ntz = base::bits::CountTrailingZeros(src);
1365 : unsigned pop = base::bits::CountPopulation(src);
1366 : DCHECK_NE(0u, pop);
1367 359627 : if (pop + ntz + nlz == 64) {
1368 : Pcmpeqd(dst, dst);
1369 231050 : if (ntz) Psllq(dst, static_cast<byte>(ntz + nlz));
1370 231053 : if (nlz) Psrlq(dst, static_cast<byte>(nlz));
1371 : } else {
1372 128581 : uint32_t lower = static_cast<uint32_t>(src);
1373 128581 : uint32_t upper = static_cast<uint32_t>(src >> 32);
1374 128581 : if (upper == 0) {
1375 40 : Move(dst, lower);
1376 : } else {
1377 128541 : movq(kScratchRegister, src);
1378 : Movq(dst, kScratchRegister);
1379 : }
1380 : }
1381 : }
1382 465377 : }
1383 :
1384 : // ----------------------------------------------------------------------------
1385 :
1386 5 : void MacroAssembler::Absps(XMMRegister dst) {
1387 5 : Andps(dst, ExternalReferenceAsOperand(
1388 : ExternalReference::address_of_float_abs_constant()));
1389 5 : }
1390 :
1391 5 : void MacroAssembler::Negps(XMMRegister dst) {
1392 5 : Xorps(dst, ExternalReferenceAsOperand(
1393 : ExternalReference::address_of_float_neg_constant()));
1394 5 : }
1395 :
1396 5 : void MacroAssembler::Abspd(XMMRegister dst) {
1397 5 : Andps(dst, ExternalReferenceAsOperand(
1398 : ExternalReference::address_of_double_abs_constant()));
1399 5 : }
1400 :
1401 5 : void MacroAssembler::Negpd(XMMRegister dst) {
1402 5 : Xorps(dst, ExternalReferenceAsOperand(
1403 : ExternalReference::address_of_double_neg_constant()));
1404 5 : }
1405 :
1406 0 : void MacroAssembler::Cmp(Register dst, Handle<Object> source) {
1407 : AllowDeferredHandleDereference smi_check;
1408 0 : if (source->IsSmi()) {
1409 0 : Cmp(dst, Smi::cast(*source));
1410 : } else {
1411 0 : Move(kScratchRegister, Handle<HeapObject>::cast(source));
1412 0 : cmp_tagged(dst, kScratchRegister);
1413 : }
1414 0 : }
1415 :
1416 112 : void MacroAssembler::Cmp(Operand dst, Handle<Object> source) {
1417 : AllowDeferredHandleDereference smi_check;
1418 112 : if (source->IsSmi()) {
1419 : Cmp(dst, Smi::cast(*source));
1420 : } else {
1421 112 : Move(kScratchRegister, Handle<HeapObject>::cast(source));
1422 112 : cmp_tagged(dst, kScratchRegister);
1423 : }
1424 112 : }
1425 :
1426 56 : void MacroAssembler::JumpIfIsInRange(Register value, unsigned lower_limit,
1427 : unsigned higher_limit, Label* on_in_range,
1428 : Label::Distance near_jump) {
1429 56 : if (lower_limit != 0) {
1430 112 : leal(kScratchRegister, Operand(value, 0u - lower_limit));
1431 56 : cmpl(kScratchRegister, Immediate(higher_limit - lower_limit));
1432 : } else {
1433 0 : cmpl(value, Immediate(higher_limit));
1434 : }
1435 56 : j(below_equal, on_in_range, near_jump);
1436 56 : }
1437 :
1438 21 : void TurboAssembler::Push(Handle<HeapObject> source) {
1439 21 : Move(kScratchRegister, source);
1440 : Push(kScratchRegister);
1441 21 : }
1442 :
1443 6300431 : void TurboAssembler::Move(Register result, Handle<HeapObject> object,
1444 : RelocInfo::Mode rmode) {
1445 : if (FLAG_embedded_builtins) {
1446 6300431 : if (root_array_available_ && options().isolate_independent_code) {
1447 49728 : IndirectLoadConstant(result, object);
1448 49728 : return;
1449 : }
1450 : }
1451 6250703 : movq(result, Immediate64(object.address(), rmode));
1452 : }
1453 :
1454 0 : void TurboAssembler::Move(Operand dst, Handle<HeapObject> object,
1455 : RelocInfo::Mode rmode) {
1456 0 : Move(kScratchRegister, object, rmode);
1457 0 : movq(dst, kScratchRegister);
1458 0 : }
1459 :
1460 2139 : void TurboAssembler::MoveStringConstant(Register result,
1461 : const StringConstantBase* string,
1462 : RelocInfo::Mode rmode) {
1463 2139 : movq_string(result, string);
1464 2139 : }
1465 :
1466 288 : void MacroAssembler::Drop(int stack_elements) {
1467 288 : if (stack_elements > 0) {
1468 288 : addq(rsp, Immediate(stack_elements * kSystemPointerSize));
1469 : }
1470 288 : }
1471 :
1472 :
1473 56 : void MacroAssembler::DropUnderReturnAddress(int stack_elements,
1474 : Register scratch) {
1475 : DCHECK_GT(stack_elements, 0);
1476 56 : if (stack_elements == 1) {
1477 56 : popq(MemOperand(rsp, 0));
1478 56 : return;
1479 : }
1480 :
1481 : PopReturnAddressTo(scratch);
1482 0 : Drop(stack_elements);
1483 : PushReturnAddressFrom(scratch);
1484 : }
1485 :
1486 674926 : void TurboAssembler::Push(Register src) { pushq(src); }
1487 :
1488 60638 : void TurboAssembler::Push(Operand src) { pushq(src); }
1489 :
1490 805949 : void MacroAssembler::PushQuad(Operand src) { pushq(src); }
1491 :
1492 1738570 : void TurboAssembler::Push(Immediate value) { pushq(value); }
1493 :
1494 0 : void MacroAssembler::PushImm32(int32_t imm32) { pushq_imm32(imm32); }
1495 :
1496 3104 : void MacroAssembler::Pop(Register dst) { popq(dst); }
1497 :
1498 45111 : void MacroAssembler::Pop(Operand dst) { popq(dst); }
1499 :
1500 716400 : void MacroAssembler::PopQuad(Operand dst) { popq(dst); }
1501 :
1502 0 : void TurboAssembler::Jump(ExternalReference ext) {
1503 0 : LoadAddress(kScratchRegister, ext);
1504 0 : jmp(kScratchRegister);
1505 0 : }
1506 :
1507 0 : void TurboAssembler::Jump(Operand op) { jmp(op); }
1508 :
1509 1024 : void TurboAssembler::Jump(Address destination, RelocInfo::Mode rmode) {
1510 : Move(kScratchRegister, destination, rmode);
1511 1024 : jmp(kScratchRegister);
1512 1024 : }
1513 :
1514 514316 : void TurboAssembler::Jump(Handle<Code> code_object, RelocInfo::Mode rmode,
1515 : Condition cc) {
1516 : DCHECK_IMPLIES(options().isolate_independent_code,
1517 : Builtins::IsIsolateIndependentBuiltin(*code_object));
1518 514316 : if (options().inline_offheap_trampolines) {
1519 464367 : int builtin_index = Builtins::kNoBuiltinId;
1520 464367 : if (isolate()->builtins()->IsBuiltinHandle(code_object, &builtin_index) &&
1521 : Builtins::IsIsolateIndependent(builtin_index)) {
1522 464160 : Label skip;
1523 464160 : if (cc != always) {
1524 464153 : if (cc == never) return;
1525 464152 : j(NegateCondition(cc), &skip, Label::kNear);
1526 : }
1527 : // Inline the trampoline.
1528 464154 : RecordCommentForOffHeapTrampoline(builtin_index);
1529 464154 : CHECK_NE(builtin_index, Builtins::kNoBuiltinId);
1530 464157 : EmbeddedData d = EmbeddedData::FromBlob();
1531 464157 : Address entry = d.InstructionStartOfBuiltin(builtin_index);
1532 : Move(kScratchRegister, entry, RelocInfo::OFF_HEAP_TARGET);
1533 464164 : jmp(kScratchRegister);
1534 464163 : bind(&skip);
1535 464162 : return;
1536 : }
1537 : }
1538 50157 : j(cc, code_object, rmode);
1539 : }
1540 :
1541 36109370 : void MacroAssembler::JumpToInstructionStream(Address entry) {
1542 : Move(kOffHeapTrampolineRegister, entry, RelocInfo::OFF_HEAP_TARGET);
1543 36109367 : jmp(kOffHeapTrampolineRegister);
1544 36109363 : }
1545 :
1546 0 : void TurboAssembler::Call(ExternalReference ext) {
1547 0 : LoadAddress(kScratchRegister, ext);
1548 0 : call(kScratchRegister);
1549 0 : }
1550 :
1551 3608 : void TurboAssembler::Call(Operand op) {
1552 3608 : if (!CpuFeatures::IsSupported(ATOM)) {
1553 3608 : call(op);
1554 : } else {
1555 0 : movq(kScratchRegister, op);
1556 0 : call(kScratchRegister);
1557 : }
1558 3608 : }
1559 :
1560 0 : void TurboAssembler::Call(Address destination, RelocInfo::Mode rmode) {
1561 : Move(kScratchRegister, destination, rmode);
1562 0 : call(kScratchRegister);
1563 0 : }
1564 :
1565 4838364 : void TurboAssembler::Call(Handle<Code> code_object, RelocInfo::Mode rmode) {
1566 : DCHECK_IMPLIES(options().isolate_independent_code,
1567 : Builtins::IsIsolateIndependentBuiltin(*code_object));
1568 4838364 : if (options().inline_offheap_trampolines) {
1569 3999619 : int builtin_index = Builtins::kNoBuiltinId;
1570 3999619 : if (isolate()->builtins()->IsBuiltinHandle(code_object, &builtin_index) &&
1571 : Builtins::IsIsolateIndependent(builtin_index)) {
1572 : // Inline the trampoline.
1573 3983398 : RecordCommentForOffHeapTrampoline(builtin_index);
1574 3983399 : CHECK_NE(builtin_index, Builtins::kNoBuiltinId);
1575 3983401 : EmbeddedData d = EmbeddedData::FromBlob();
1576 3983401 : Address entry = d.InstructionStartOfBuiltin(builtin_index);
1577 : Move(kScratchRegister, entry, RelocInfo::OFF_HEAP_TARGET);
1578 3983405 : call(kScratchRegister);
1579 : return;
1580 : }
1581 : }
1582 : DCHECK(RelocInfo::IsCodeTarget(rmode));
1583 854969 : call(code_object, rmode);
1584 : }
1585 :
1586 3608 : void TurboAssembler::CallBuiltinPointer(Register builtin_pointer) {
1587 : #if defined(V8_COMPRESS_POINTERS) || defined(V8_31BIT_SMIS_ON_64BIT_ARCH)
1588 : STATIC_ASSERT(kSmiShiftSize == 0);
1589 : STATIC_ASSERT(kSmiTagSize == 1);
1590 : STATIC_ASSERT(kSmiTag == 0);
1591 :
1592 : // The builtin_pointer register contains the builtin index as a Smi.
1593 : // Untagging is folded into the indexing operand below (we use times_4 instead
1594 : // of times_8 since smis are already shifted by one).
1595 : Call(Operand(kRootRegister, builtin_pointer, times_4,
1596 : IsolateData::builtin_entry_table_offset()));
1597 : #else // defined(V8_COMPRESS_POINTERS) || defined(V8_31BIT_SMIS_ON_64BIT_ARCH)
1598 : STATIC_ASSERT(kSmiShiftSize == 31);
1599 : STATIC_ASSERT(kSmiTagSize == 1);
1600 : STATIC_ASSERT(kSmiTag == 0);
1601 :
1602 : // The builtin_pointer register contains the builtin index as a Smi.
1603 3608 : SmiUntag(builtin_pointer, builtin_pointer);
1604 7216 : Call(Operand(kRootRegister, builtin_pointer, times_8,
1605 3608 : IsolateData::builtin_entry_table_offset()));
1606 : #endif // defined(V8_COMPRESS_POINTERS) || defined(V8_31BIT_SMIS_ON_64BIT_ARCH)
1607 3608 : }
1608 :
1609 407082 : void TurboAssembler::LoadCodeObjectEntry(Register destination,
1610 : Register code_object) {
1611 : // Code objects are called differently depending on whether we are generating
1612 : // builtin code (which will later be embedded into the binary) or compiling
1613 : // user JS code at runtime.
1614 : // * Builtin code runs in --jitless mode and thus must not call into on-heap
1615 : // Code targets. Instead, we dispatch through the builtins entry table.
1616 : // * Codegen at runtime does not have this restriction and we can use the
1617 : // shorter, branchless instruction sequence. The assumption here is that
1618 : // targets are usually generated code and not builtin Code objects.
1619 :
1620 407082 : if (options().isolate_independent_code) {
1621 : DCHECK(root_array_available());
1622 9688 : Label if_code_is_off_heap, out;
1623 :
1624 : // Check whether the Code object is an off-heap trampoline. If so, call its
1625 : // (off-heap) entry point directly without going through the (on-heap)
1626 : // trampoline. Otherwise, just call the Code object as always.
1627 9688 : testl(FieldOperand(code_object, Code::kFlagsOffset),
1628 : Immediate(Code::IsOffHeapTrampoline::kMask));
1629 9688 : j(not_equal, &if_code_is_off_heap);
1630 :
1631 : // Not an off-heap trampoline, the entry point is at
1632 : // Code::raw_instruction_start().
1633 : Move(destination, code_object);
1634 : addq(destination, Immediate(Code::kHeaderSize - kHeapObjectTag));
1635 9688 : jmp(&out);
1636 :
1637 : // An off-heap trampoline, the entry point is loaded from the builtin entry
1638 : // table.
1639 9688 : bind(&if_code_is_off_heap);
1640 : movl(destination, FieldOperand(code_object, Code::kBuiltinIndexOffset));
1641 19376 : movq(destination,
1642 : Operand(kRootRegister, destination, times_system_pointer_size,
1643 : IsolateData::builtin_entry_table_offset()));
1644 :
1645 9688 : bind(&out);
1646 : } else {
1647 : Move(destination, code_object);
1648 397394 : addq(destination, Immediate(Code::kHeaderSize - kHeapObjectTag));
1649 : }
1650 407083 : }
1651 :
1652 24224 : void TurboAssembler::CallCodeObject(Register code_object) {
1653 24224 : LoadCodeObjectEntry(code_object, code_object);
1654 24224 : call(code_object);
1655 24226 : }
1656 :
1657 728 : void TurboAssembler::JumpCodeObject(Register code_object) {
1658 728 : LoadCodeObjectEntry(code_object, code_object);
1659 728 : jmp(code_object);
1660 728 : }
1661 :
1662 0 : void TurboAssembler::RetpolineCall(Register reg) {
1663 0 : Label setup_return, setup_target, inner_indirect_branch, capture_spec;
1664 :
1665 0 : jmp(&setup_return); // Jump past the entire retpoline below.
1666 :
1667 0 : bind(&inner_indirect_branch);
1668 0 : call(&setup_target);
1669 :
1670 0 : bind(&capture_spec);
1671 0 : pause();
1672 0 : jmp(&capture_spec);
1673 :
1674 0 : bind(&setup_target);
1675 0 : movq(Operand(rsp, 0), reg);
1676 0 : ret(0);
1677 :
1678 0 : bind(&setup_return);
1679 0 : call(&inner_indirect_branch); // Callee will return after this instruction.
1680 0 : }
1681 :
1682 0 : void TurboAssembler::RetpolineCall(Address destination, RelocInfo::Mode rmode) {
1683 : Move(kScratchRegister, destination, rmode);
1684 0 : RetpolineCall(kScratchRegister);
1685 0 : }
1686 :
1687 0 : void TurboAssembler::RetpolineJump(Register reg) {
1688 0 : Label setup_target, capture_spec;
1689 :
1690 0 : call(&setup_target);
1691 :
1692 0 : bind(&capture_spec);
1693 0 : pause();
1694 0 : jmp(&capture_spec);
1695 :
1696 0 : bind(&setup_target);
1697 0 : movq(Operand(rsp, 0), reg);
1698 0 : ret(0);
1699 0 : }
1700 :
1701 43177 : void TurboAssembler::Pextrd(Register dst, XMMRegister src, int8_t imm8) {
1702 43177 : if (imm8 == 0) {
1703 : Movd(dst, src);
1704 : return;
1705 : }
1706 42683 : if (CpuFeatures::IsSupported(SSE4_1)) {
1707 : CpuFeatureScope sse_scope(this, SSE4_1);
1708 42351 : pextrd(dst, src, imm8);
1709 : return;
1710 : }
1711 : DCHECK_EQ(1, imm8);
1712 332 : movq(dst, src);
1713 : shrq(dst, Immediate(32));
1714 : }
1715 :
1716 416 : void TurboAssembler::Pinsrd(XMMRegister dst, Register src, int8_t imm8) {
1717 416 : if (CpuFeatures::IsSupported(SSE4_1)) {
1718 : CpuFeatureScope sse_scope(this, SSE4_1);
1719 414 : pinsrd(dst, src, imm8);
1720 : return;
1721 : }
1722 : Movd(kScratchDoubleReg, src);
1723 2 : if (imm8 == 1) {
1724 : punpckldq(dst, kScratchDoubleReg);
1725 : } else {
1726 : DCHECK_EQ(0, imm8);
1727 : Movss(dst, kScratchDoubleReg);
1728 : }
1729 : }
1730 :
1731 1488 : void TurboAssembler::Pinsrd(XMMRegister dst, Operand src, int8_t imm8) {
1732 1488 : if (CpuFeatures::IsSupported(SSE4_1)) {
1733 : CpuFeatureScope sse_scope(this, SSE4_1);
1734 1488 : pinsrd(dst, src, imm8);
1735 : return;
1736 : }
1737 : Movd(kScratchDoubleReg, src);
1738 0 : if (imm8 == 1) {
1739 : punpckldq(dst, kScratchDoubleReg);
1740 : } else {
1741 : DCHECK_EQ(0, imm8);
1742 : Movss(dst, kScratchDoubleReg);
1743 : }
1744 : }
1745 :
1746 624 : void TurboAssembler::Lzcntl(Register dst, Register src) {
1747 624 : if (CpuFeatures::IsSupported(LZCNT)) {
1748 : CpuFeatureScope scope(this, LZCNT);
1749 0 : lzcntl(dst, src);
1750 : return;
1751 : }
1752 624 : Label not_zero_src;
1753 624 : bsrl(dst, src);
1754 624 : j(not_zero, ¬_zero_src, Label::kNear);
1755 624 : Set(dst, 63); // 63^31 == 32
1756 624 : bind(¬_zero_src);
1757 : xorl(dst, Immediate(31)); // for x in [0..31], 31^x == 31 - x
1758 : }
1759 :
1760 40 : void TurboAssembler::Lzcntl(Register dst, Operand src) {
1761 40 : if (CpuFeatures::IsSupported(LZCNT)) {
1762 : CpuFeatureScope scope(this, LZCNT);
1763 0 : lzcntl(dst, src);
1764 : return;
1765 : }
1766 40 : Label not_zero_src;
1767 40 : bsrl(dst, src);
1768 40 : j(not_zero, ¬_zero_src, Label::kNear);
1769 40 : Set(dst, 63); // 63^31 == 32
1770 40 : bind(¬_zero_src);
1771 : xorl(dst, Immediate(31)); // for x in [0..31], 31^x == 31 - x
1772 : }
1773 :
1774 34 : void TurboAssembler::Lzcntq(Register dst, Register src) {
1775 34 : if (CpuFeatures::IsSupported(LZCNT)) {
1776 : CpuFeatureScope scope(this, LZCNT);
1777 0 : lzcntq(dst, src);
1778 : return;
1779 : }
1780 34 : Label not_zero_src;
1781 34 : bsrq(dst, src);
1782 34 : j(not_zero, ¬_zero_src, Label::kNear);
1783 34 : Set(dst, 127); // 127^63 == 64
1784 34 : bind(¬_zero_src);
1785 : xorl(dst, Immediate(63)); // for x in [0..63], 63^x == 63 - x
1786 : }
1787 :
1788 0 : void TurboAssembler::Lzcntq(Register dst, Operand src) {
1789 0 : if (CpuFeatures::IsSupported(LZCNT)) {
1790 : CpuFeatureScope scope(this, LZCNT);
1791 0 : lzcntq(dst, src);
1792 : return;
1793 : }
1794 0 : Label not_zero_src;
1795 0 : bsrq(dst, src);
1796 0 : j(not_zero, ¬_zero_src, Label::kNear);
1797 0 : Set(dst, 127); // 127^63 == 64
1798 0 : bind(¬_zero_src);
1799 : xorl(dst, Immediate(63)); // for x in [0..63], 63^x == 63 - x
1800 : }
1801 :
1802 34 : void TurboAssembler::Tzcntq(Register dst, Register src) {
1803 34 : if (CpuFeatures::IsSupported(BMI1)) {
1804 : CpuFeatureScope scope(this, BMI1);
1805 0 : tzcntq(dst, src);
1806 : return;
1807 : }
1808 34 : Label not_zero_src;
1809 34 : bsfq(dst, src);
1810 34 : j(not_zero, ¬_zero_src, Label::kNear);
1811 : // Define the result of tzcnt(0) separately, because bsf(0) is undefined.
1812 34 : Set(dst, 64);
1813 34 : bind(¬_zero_src);
1814 : }
1815 :
1816 0 : void TurboAssembler::Tzcntq(Register dst, Operand src) {
1817 0 : if (CpuFeatures::IsSupported(BMI1)) {
1818 : CpuFeatureScope scope(this, BMI1);
1819 0 : tzcntq(dst, src);
1820 : return;
1821 : }
1822 0 : Label not_zero_src;
1823 0 : bsfq(dst, src);
1824 0 : j(not_zero, ¬_zero_src, Label::kNear);
1825 : // Define the result of tzcnt(0) separately, because bsf(0) is undefined.
1826 0 : Set(dst, 64);
1827 0 : bind(¬_zero_src);
1828 : }
1829 :
1830 332 : void TurboAssembler::Tzcntl(Register dst, Register src) {
1831 332 : if (CpuFeatures::IsSupported(BMI1)) {
1832 : CpuFeatureScope scope(this, BMI1);
1833 0 : tzcntl(dst, src);
1834 : return;
1835 : }
1836 332 : Label not_zero_src;
1837 332 : bsfl(dst, src);
1838 332 : j(not_zero, ¬_zero_src, Label::kNear);
1839 332 : Set(dst, 32); // The result of tzcnt is 32 if src = 0.
1840 332 : bind(¬_zero_src);
1841 : }
1842 :
1843 0 : void TurboAssembler::Tzcntl(Register dst, Operand src) {
1844 0 : if (CpuFeatures::IsSupported(BMI1)) {
1845 : CpuFeatureScope scope(this, BMI1);
1846 0 : tzcntl(dst, src);
1847 : return;
1848 : }
1849 0 : Label not_zero_src;
1850 0 : bsfl(dst, src);
1851 0 : j(not_zero, ¬_zero_src, Label::kNear);
1852 0 : Set(dst, 32); // The result of tzcnt is 32 if src = 0.
1853 0 : bind(¬_zero_src);
1854 : }
1855 :
1856 80 : void TurboAssembler::Popcntl(Register dst, Register src) {
1857 80 : if (CpuFeatures::IsSupported(POPCNT)) {
1858 : CpuFeatureScope scope(this, POPCNT);
1859 80 : popcntl(dst, src);
1860 80 : return;
1861 : }
1862 0 : UNREACHABLE();
1863 : }
1864 :
1865 0 : void TurboAssembler::Popcntl(Register dst, Operand src) {
1866 0 : if (CpuFeatures::IsSupported(POPCNT)) {
1867 : CpuFeatureScope scope(this, POPCNT);
1868 0 : popcntl(dst, src);
1869 0 : return;
1870 : }
1871 0 : UNREACHABLE();
1872 : }
1873 :
1874 41 : void TurboAssembler::Popcntq(Register dst, Register src) {
1875 41 : if (CpuFeatures::IsSupported(POPCNT)) {
1876 : CpuFeatureScope scope(this, POPCNT);
1877 41 : popcntq(dst, src);
1878 42 : return;
1879 : }
1880 0 : UNREACHABLE();
1881 : }
1882 :
1883 0 : void TurboAssembler::Popcntq(Register dst, Operand src) {
1884 0 : if (CpuFeatures::IsSupported(POPCNT)) {
1885 : CpuFeatureScope scope(this, POPCNT);
1886 0 : popcntq(dst, src);
1887 0 : return;
1888 : }
1889 0 : UNREACHABLE();
1890 : }
1891 :
1892 :
1893 0 : void MacroAssembler::Pushad() {
1894 : Push(rax);
1895 : Push(rcx);
1896 : Push(rdx);
1897 : Push(rbx);
1898 : // Not pushing rsp or rbp.
1899 : Push(rsi);
1900 : Push(rdi);
1901 : Push(r8);
1902 : Push(r9);
1903 : // r10 is kScratchRegister.
1904 : Push(r11);
1905 : Push(r12);
1906 : // r13 is kRootRegister.
1907 : Push(r14);
1908 : Push(r15);
1909 : STATIC_ASSERT(12 == kNumSafepointSavedRegisters);
1910 : // Use lea for symmetry with Popad.
1911 : int sp_delta = (kNumSafepointRegisters - kNumSafepointSavedRegisters) *
1912 : kSystemPointerSize;
1913 0 : leaq(rsp, Operand(rsp, -sp_delta));
1914 0 : }
1915 :
1916 :
1917 0 : void MacroAssembler::Popad() {
1918 : // Popad must not change the flags, so use lea instead of addq.
1919 : int sp_delta = (kNumSafepointRegisters - kNumSafepointSavedRegisters) *
1920 : kSystemPointerSize;
1921 0 : leaq(rsp, Operand(rsp, sp_delta));
1922 : Pop(r15);
1923 : Pop(r14);
1924 : Pop(r12);
1925 : Pop(r11);
1926 : Pop(r9);
1927 : Pop(r8);
1928 : Pop(rdi);
1929 : Pop(rsi);
1930 : Pop(rbx);
1931 : Pop(rdx);
1932 : Pop(rcx);
1933 : Pop(rax);
1934 0 : }
1935 :
1936 :
1937 : // Order general registers are pushed by Pushad:
1938 : // rax, rcx, rdx, rbx, rsi, rdi, r8, r9, r11, r14, r15.
1939 : const int
1940 : MacroAssembler::kSafepointPushRegisterIndices[Register::kNumRegisters] = {
1941 : 0,
1942 : 1,
1943 : 2,
1944 : 3,
1945 : -1,
1946 : -1,
1947 : 4,
1948 : 5,
1949 : 6,
1950 : 7,
1951 : -1,
1952 : 8,
1953 : 9,
1954 : -1,
1955 : 10,
1956 : 11
1957 : };
1958 :
1959 168 : void MacroAssembler::PushStackHandler() {
1960 : // Adjust this code if not the case.
1961 : STATIC_ASSERT(StackHandlerConstants::kSize == 2 * kSystemPointerSize);
1962 : STATIC_ASSERT(StackHandlerConstants::kNextOffset == 0);
1963 :
1964 : Push(Immediate(0)); // Padding.
1965 :
1966 : // Link the current handler as the next handler.
1967 : ExternalReference handler_address =
1968 168 : ExternalReference::Create(IsolateAddressId::kHandlerAddress, isolate());
1969 168 : Push(ExternalReferenceAsOperand(handler_address));
1970 :
1971 : // Set this new handler as the current one.
1972 168 : movq(ExternalReferenceAsOperand(handler_address), rsp);
1973 168 : }
1974 :
1975 :
1976 168 : void MacroAssembler::PopStackHandler() {
1977 : STATIC_ASSERT(StackHandlerConstants::kNextOffset == 0);
1978 : ExternalReference handler_address =
1979 168 : ExternalReference::Create(IsolateAddressId::kHandlerAddress, isolate());
1980 168 : Pop(ExternalReferenceAsOperand(handler_address));
1981 : addq(rsp, Immediate(StackHandlerConstants::kSize - kSystemPointerSize));
1982 168 : }
1983 :
1984 1392 : void TurboAssembler::Ret() { ret(0); }
1985 :
1986 2743846 : void TurboAssembler::Ret(int bytes_dropped, Register scratch) {
1987 2743846 : if (is_uint16(bytes_dropped)) {
1988 2743842 : ret(bytes_dropped);
1989 : } else {
1990 : PopReturnAddressTo(scratch);
1991 : addq(rsp, Immediate(bytes_dropped));
1992 : PushReturnAddressFrom(scratch);
1993 4 : ret(0);
1994 : }
1995 2744113 : }
1996 :
1997 560 : void MacroAssembler::CmpObjectType(Register heap_object,
1998 : InstanceType type,
1999 : Register map) {
2000 : LoadTaggedPointerField(map,
2001 : FieldOperand(heap_object, HeapObject::kMapOffset));
2002 560 : CmpInstanceType(map, type);
2003 560 : }
2004 :
2005 :
2006 1120 : void MacroAssembler::CmpInstanceType(Register map, InstanceType type) {
2007 2240 : cmpw(FieldOperand(map, Map::kInstanceTypeOffset), Immediate(type));
2008 1120 : }
2009 :
2010 0 : void MacroAssembler::DoubleToI(Register result_reg, XMMRegister input_reg,
2011 : XMMRegister scratch, Label* lost_precision,
2012 : Label* is_nan, Label::Distance dst) {
2013 0 : Cvttsd2si(result_reg, input_reg);
2014 0 : Cvtlsi2sd(kScratchDoubleReg, result_reg);
2015 : Ucomisd(kScratchDoubleReg, input_reg);
2016 0 : j(not_equal, lost_precision, dst);
2017 0 : j(parity_even, is_nan, dst); // NaN.
2018 0 : }
2019 :
2020 :
2021 112 : void MacroAssembler::AssertNotSmi(Register object) {
2022 112 : if (emit_debug_code()) {
2023 : Condition is_smi = CheckSmi(object);
2024 0 : Check(NegateCondition(is_smi), AbortReason::kOperandIsASmi);
2025 : }
2026 112 : }
2027 :
2028 :
2029 554 : void MacroAssembler::AssertSmi(Register object) {
2030 554 : if (emit_debug_code()) {
2031 : Condition is_smi = CheckSmi(object);
2032 0 : Check(is_smi, AbortReason::kOperandIsNotASmi);
2033 : }
2034 554 : }
2035 :
2036 0 : void MacroAssembler::AssertSmi(Operand object) {
2037 0 : if (emit_debug_code()) {
2038 : Condition is_smi = CheckSmi(object);
2039 0 : Check(is_smi, AbortReason::kOperandIsNotASmi);
2040 : }
2041 0 : }
2042 :
2043 1721416 : void TurboAssembler::AssertZeroExtended(Register int32_register) {
2044 1721416 : if (emit_debug_code()) {
2045 : DCHECK_NE(int32_register, kScratchRegister);
2046 58 : movq(kScratchRegister, int64_t{0x0000000100000000});
2047 : cmpq(kScratchRegister, int32_register);
2048 58 : Check(above_equal, AbortReason::k32BitValueInRegisterIsNotZeroExtended);
2049 : }
2050 1721416 : }
2051 :
2052 112 : void MacroAssembler::AssertConstructor(Register object) {
2053 112 : if (emit_debug_code()) {
2054 0 : testb(object, Immediate(kSmiTagMask));
2055 0 : Check(not_equal, AbortReason::kOperandIsASmiAndNotAConstructor);
2056 : Push(object);
2057 : LoadTaggedPointerField(object,
2058 : FieldOperand(object, HeapObject::kMapOffset));
2059 0 : testb(FieldOperand(object, Map::kBitFieldOffset),
2060 0 : Immediate(Map::IsConstructorBit::kMask));
2061 : Pop(object);
2062 0 : Check(not_zero, AbortReason::kOperandIsNotAConstructor);
2063 : }
2064 112 : }
2065 :
2066 280 : void MacroAssembler::AssertFunction(Register object) {
2067 280 : if (emit_debug_code()) {
2068 0 : testb(object, Immediate(kSmiTagMask));
2069 0 : Check(not_equal, AbortReason::kOperandIsASmiAndNotAFunction);
2070 : Push(object);
2071 0 : CmpObjectType(object, JS_FUNCTION_TYPE, object);
2072 : Pop(object);
2073 0 : Check(equal, AbortReason::kOperandIsNotAFunction);
2074 : }
2075 280 : }
2076 :
2077 :
2078 112 : void MacroAssembler::AssertBoundFunction(Register object) {
2079 112 : if (emit_debug_code()) {
2080 0 : testb(object, Immediate(kSmiTagMask));
2081 0 : Check(not_equal, AbortReason::kOperandIsASmiAndNotABoundFunction);
2082 : Push(object);
2083 0 : CmpObjectType(object, JS_BOUND_FUNCTION_TYPE, object);
2084 : Pop(object);
2085 0 : Check(equal, AbortReason::kOperandIsNotABoundFunction);
2086 : }
2087 112 : }
2088 :
2089 56 : void MacroAssembler::AssertGeneratorObject(Register object) {
2090 112 : if (!emit_debug_code()) return;
2091 0 : testb(object, Immediate(kSmiTagMask));
2092 0 : Check(not_equal, AbortReason::kOperandIsASmiAndNotAGeneratorObject);
2093 :
2094 : // Load map
2095 0 : Register map = object;
2096 : Push(object);
2097 : LoadTaggedPointerField(map, FieldOperand(object, HeapObject::kMapOffset));
2098 :
2099 0 : Label do_check;
2100 : // Check if JSGeneratorObject
2101 0 : CmpInstanceType(map, JS_GENERATOR_OBJECT_TYPE);
2102 0 : j(equal, &do_check);
2103 :
2104 : // Check if JSAsyncFunctionObject
2105 0 : CmpInstanceType(map, JS_ASYNC_FUNCTION_OBJECT_TYPE);
2106 0 : j(equal, &do_check);
2107 :
2108 : // Check if JSAsyncGeneratorObject
2109 0 : CmpInstanceType(map, JS_ASYNC_GENERATOR_OBJECT_TYPE);
2110 :
2111 0 : bind(&do_check);
2112 : // Restore generator object to register and perform assertion
2113 : Pop(object);
2114 0 : Check(equal, AbortReason::kOperandIsNotAGeneratorObject);
2115 : }
2116 :
2117 112 : void MacroAssembler::AssertUndefinedOrAllocationSite(Register object) {
2118 112 : if (emit_debug_code()) {
2119 0 : Label done_checking;
2120 0 : AssertNotSmi(object);
2121 0 : Cmp(object, isolate()->factory()->undefined_value());
2122 0 : j(equal, &done_checking);
2123 0 : Cmp(FieldOperand(object, 0), isolate()->factory()->allocation_site_map());
2124 0 : Assert(equal, AbortReason::kExpectedUndefinedOrCell);
2125 0 : bind(&done_checking);
2126 : }
2127 112 : }
2128 :
2129 56 : void MacroAssembler::LoadWeakValue(Register in_out, Label* target_if_cleared) {
2130 56 : cmpl(in_out, Immediate(kClearedWeakHeapObjectLower32));
2131 56 : j(equal, target_if_cleared);
2132 :
2133 : andq(in_out, Immediate(~static_cast<int32_t>(kWeakHeapObjectMask)));
2134 56 : }
2135 :
2136 56 : void MacroAssembler::IncrementCounter(StatsCounter* counter, int value) {
2137 : DCHECK_GT(value, 0);
2138 56 : if (FLAG_native_code_counters && counter->Enabled()) {
2139 : Operand counter_operand =
2140 0 : ExternalReferenceAsOperand(ExternalReference::Create(counter));
2141 : // This operation has to be exactly 32-bit wide in case the external
2142 : // reference table redirects the counter to a uint32_t dummy_stats_counter_
2143 : // field.
2144 0 : if (value == 1) {
2145 0 : incl(counter_operand);
2146 : } else {
2147 0 : addl(counter_operand, Immediate(value));
2148 : }
2149 : }
2150 56 : }
2151 :
2152 :
2153 0 : void MacroAssembler::DecrementCounter(StatsCounter* counter, int value) {
2154 : DCHECK_GT(value, 0);
2155 0 : if (FLAG_native_code_counters && counter->Enabled()) {
2156 : Operand counter_operand =
2157 0 : ExternalReferenceAsOperand(ExternalReference::Create(counter));
2158 : // This operation has to be exactly 32-bit wide in case the external
2159 : // reference table redirects the counter to a uint32_t dummy_stats_counter_
2160 : // field.
2161 0 : if (value == 1) {
2162 0 : decl(counter_operand);
2163 : } else {
2164 0 : subl(counter_operand, Immediate(value));
2165 : }
2166 : }
2167 0 : }
2168 :
2169 56 : void MacroAssembler::MaybeDropFrames() {
2170 : // Check whether we need to drop frames to restart a function on the stack.
2171 : ExternalReference restart_fp =
2172 56 : ExternalReference::debug_restart_fp_address(isolate());
2173 56 : Load(rbx, restart_fp);
2174 56 : testq(rbx, rbx);
2175 :
2176 56 : Label dont_drop;
2177 56 : j(zero, &dont_drop, Label::kNear);
2178 56 : Jump(BUILTIN_CODE(isolate(), FrameDropperTrampoline), RelocInfo::CODE_TARGET);
2179 :
2180 56 : bind(&dont_drop);
2181 56 : }
2182 :
2183 1288 : void TurboAssembler::PrepareForTailCall(const ParameterCount& callee_args_count,
2184 : Register caller_args_count_reg,
2185 : Register scratch0, Register scratch1) {
2186 : #if DEBUG
2187 : if (callee_args_count.is_reg()) {
2188 : DCHECK(!AreAliased(callee_args_count.reg(), caller_args_count_reg, scratch0,
2189 : scratch1));
2190 : } else {
2191 : DCHECK(!AreAliased(caller_args_count_reg, scratch0, scratch1));
2192 : }
2193 : #endif
2194 :
2195 : // Calculate the destination address where we will put the return address
2196 : // after we drop current frame.
2197 1288 : Register new_sp_reg = scratch0;
2198 1288 : if (callee_args_count.is_reg()) {
2199 1288 : subq(caller_args_count_reg, callee_args_count.reg());
2200 2576 : leaq(new_sp_reg,
2201 : Operand(rbp, caller_args_count_reg, times_system_pointer_size,
2202 : StandardFrameConstants::kCallerPCOffset));
2203 : } else {
2204 0 : leaq(new_sp_reg,
2205 : Operand(rbp, caller_args_count_reg, times_system_pointer_size,
2206 : StandardFrameConstants::kCallerPCOffset -
2207 : callee_args_count.immediate() * kSystemPointerSize));
2208 : }
2209 :
2210 1288 : if (FLAG_debug_code) {
2211 0 : cmpq(rsp, new_sp_reg);
2212 0 : Check(below, AbortReason::kStackAccessBelowStackPointer);
2213 : }
2214 :
2215 : // Copy return address from caller's frame to current frame's return address
2216 : // to avoid its trashing and let the following loop copy it to the right
2217 : // place.
2218 1288 : Register tmp_reg = scratch1;
2219 2576 : movq(tmp_reg, Operand(rbp, StandardFrameConstants::kCallerPCOffset));
2220 2576 : movq(Operand(rsp, 0), tmp_reg);
2221 :
2222 : // Restore caller's frame pointer now as it could be overwritten by
2223 : // the copying loop.
2224 2576 : movq(rbp, Operand(rbp, StandardFrameConstants::kCallerFPOffset));
2225 :
2226 : // +2 here is to copy both receiver and return address.
2227 1288 : Register count_reg = caller_args_count_reg;
2228 1288 : if (callee_args_count.is_reg()) {
2229 2576 : leaq(count_reg, Operand(callee_args_count.reg(), 2));
2230 : } else {
2231 0 : movq(count_reg, Immediate(callee_args_count.immediate() + 2));
2232 : // TODO(ishell): Unroll copying loop for small immediate values.
2233 : }
2234 :
2235 : // Now copy callee arguments to the caller frame going backwards to avoid
2236 : // callee arguments corruption (source and destination areas could overlap).
2237 1288 : Label loop, entry;
2238 1288 : jmp(&entry, Label::kNear);
2239 1288 : bind(&loop);
2240 : decq(count_reg);
2241 2576 : movq(tmp_reg, Operand(rsp, count_reg, times_system_pointer_size, 0));
2242 2576 : movq(Operand(new_sp_reg, count_reg, times_system_pointer_size, 0), tmp_reg);
2243 1288 : bind(&entry);
2244 : cmpq(count_reg, Immediate(0));
2245 1288 : j(not_equal, &loop, Label::kNear);
2246 :
2247 : // Leave current frame.
2248 : movq(rsp, new_sp_reg);
2249 1288 : }
2250 :
2251 112 : void MacroAssembler::InvokeFunction(Register function, Register new_target,
2252 : const ParameterCount& actual,
2253 : InvokeFlag flag) {
2254 : LoadTaggedPointerField(
2255 : rbx, FieldOperand(function, JSFunction::kSharedFunctionInfoOffset));
2256 112 : movzxwq(rbx,
2257 : FieldOperand(rbx, SharedFunctionInfo::kFormalParameterCountOffset));
2258 :
2259 : ParameterCount expected(rbx);
2260 112 : InvokeFunction(function, new_target, expected, actual, flag);
2261 112 : }
2262 :
2263 168 : void MacroAssembler::InvokeFunction(Register function, Register new_target,
2264 : const ParameterCount& expected,
2265 : const ParameterCount& actual,
2266 : InvokeFlag flag) {
2267 : DCHECK(function == rdi);
2268 : LoadTaggedPointerField(rsi,
2269 : FieldOperand(function, JSFunction::kContextOffset));
2270 168 : InvokeFunctionCode(rdi, new_target, expected, actual, flag);
2271 168 : }
2272 :
2273 336 : void MacroAssembler::InvokeFunctionCode(Register function, Register new_target,
2274 : const ParameterCount& expected,
2275 : const ParameterCount& actual,
2276 : InvokeFlag flag) {
2277 : // You can't call a function without a valid frame.
2278 : DCHECK(flag == JUMP_FUNCTION || has_frame());
2279 : DCHECK(function == rdi);
2280 : DCHECK_IMPLIES(new_target.is_valid(), new_target == rdx);
2281 :
2282 : // On function call, call into the debugger if necessary.
2283 336 : CheckDebugHook(function, new_target, expected, actual);
2284 :
2285 : // Clear the new.target register if not given.
2286 336 : if (!new_target.is_valid()) {
2287 224 : LoadRoot(rdx, RootIndex::kUndefinedValue);
2288 : }
2289 :
2290 336 : Label done;
2291 336 : bool definitely_mismatches = false;
2292 : InvokePrologue(expected, actual, &done, &definitely_mismatches, flag,
2293 336 : Label::kNear);
2294 336 : if (!definitely_mismatches) {
2295 : // We call indirectly through the code field in the function to
2296 : // allow recompilation to take effect without changing any of the
2297 : // call sites.
2298 : static_assert(kJavaScriptCallCodeStartRegister == rcx, "ABI mismatch");
2299 : LoadTaggedPointerField(rcx,
2300 : FieldOperand(function, JSFunction::kCodeOffset));
2301 336 : if (flag == CALL_FUNCTION) {
2302 112 : CallCodeObject(rcx);
2303 : } else {
2304 : DCHECK(flag == JUMP_FUNCTION);
2305 224 : JumpCodeObject(rcx);
2306 : }
2307 336 : bind(&done);
2308 : }
2309 336 : }
2310 :
2311 336 : void MacroAssembler::InvokePrologue(const ParameterCount& expected,
2312 : const ParameterCount& actual, Label* done,
2313 : bool* definitely_mismatches,
2314 : InvokeFlag flag,
2315 : Label::Distance near_jump) {
2316 : bool definitely_matches = false;
2317 336 : *definitely_mismatches = false;
2318 336 : Label invoke;
2319 336 : if (expected.is_immediate()) {
2320 : DCHECK(actual.is_immediate());
2321 0 : Set(rax, actual.immediate());
2322 0 : if (expected.immediate() == actual.immediate()) {
2323 : definitely_matches = true;
2324 : } else {
2325 0 : if (expected.immediate() ==
2326 : SharedFunctionInfo::kDontAdaptArgumentsSentinel) {
2327 : // Don't worry about adapting arguments for built-ins that
2328 : // don't want that done. Skip adaption code by making it look
2329 : // like we have a match between expected and actual number of
2330 : // arguments.
2331 : definitely_matches = true;
2332 : } else {
2333 0 : *definitely_mismatches = true;
2334 0 : Set(rbx, expected.immediate());
2335 : }
2336 : }
2337 : } else {
2338 336 : if (actual.is_immediate()) {
2339 : // Expected is in register, actual is immediate. This is the
2340 : // case when we invoke function values without going through the
2341 : // IC mechanism.
2342 0 : Set(rax, actual.immediate());
2343 0 : cmpq(expected.reg(), Immediate(actual.immediate()));
2344 0 : j(equal, &invoke, Label::kNear);
2345 : DCHECK(expected.reg() == rbx);
2346 336 : } else if (expected.reg() != actual.reg()) {
2347 : // Both expected and actual are in (different) registers. This
2348 : // is the case when we invoke functions using call and apply.
2349 280 : cmpq(expected.reg(), actual.reg());
2350 280 : j(equal, &invoke, Label::kNear);
2351 : DCHECK(actual.reg() == rax);
2352 : DCHECK(expected.reg() == rbx);
2353 : } else {
2354 : definitely_matches = true;
2355 : Move(rax, actual.reg());
2356 : }
2357 : }
2358 :
2359 336 : if (!definitely_matches) {
2360 280 : Handle<Code> adaptor = BUILTIN_CODE(isolate(), ArgumentsAdaptorTrampoline);
2361 280 : if (flag == CALL_FUNCTION) {
2362 112 : Call(adaptor, RelocInfo::CODE_TARGET);
2363 112 : if (!*definitely_mismatches) {
2364 112 : jmp(done, near_jump);
2365 : }
2366 : } else {
2367 168 : Jump(adaptor, RelocInfo::CODE_TARGET);
2368 : }
2369 280 : bind(&invoke);
2370 : }
2371 336 : }
2372 :
2373 336 : void MacroAssembler::CheckDebugHook(Register fun, Register new_target,
2374 : const ParameterCount& expected,
2375 : const ParameterCount& actual) {
2376 336 : Label skip_hook;
2377 : ExternalReference debug_hook_active =
2378 336 : ExternalReference::debug_hook_on_function_call_address(isolate());
2379 : Operand debug_hook_active_operand =
2380 336 : ExternalReferenceAsOperand(debug_hook_active);
2381 336 : cmpb(debug_hook_active_operand, Immediate(0));
2382 336 : j(equal, &skip_hook);
2383 :
2384 : {
2385 : FrameScope frame(this,
2386 672 : has_frame() ? StackFrame::NONE : StackFrame::INTERNAL);
2387 336 : if (expected.is_reg()) {
2388 336 : SmiTag(expected.reg(), expected.reg());
2389 : Push(expected.reg());
2390 : }
2391 336 : if (actual.is_reg()) {
2392 336 : SmiTag(actual.reg(), actual.reg());
2393 : Push(actual.reg());
2394 336 : SmiUntag(actual.reg(), actual.reg());
2395 : }
2396 336 : if (new_target.is_valid()) {
2397 : Push(new_target);
2398 : }
2399 : Push(fun);
2400 : Push(fun);
2401 336 : Push(StackArgumentsAccessor(rbp, actual).GetReceiverOperand());
2402 336 : CallRuntime(Runtime::kDebugOnFunctionCall);
2403 : Pop(fun);
2404 336 : if (new_target.is_valid()) {
2405 : Pop(new_target);
2406 : }
2407 336 : if (actual.is_reg()) {
2408 : Pop(actual.reg());
2409 336 : SmiUntag(actual.reg(), actual.reg());
2410 : }
2411 336 : if (expected.is_reg()) {
2412 : Pop(expected.reg());
2413 336 : SmiUntag(expected.reg(), expected.reg());
2414 : }
2415 : }
2416 336 : bind(&skip_hook);
2417 336 : }
2418 :
2419 1110596 : void TurboAssembler::StubPrologue(StackFrame::Type type) {
2420 1110596 : pushq(rbp); // Caller's frame pointer.
2421 : movq(rbp, rsp);
2422 : Push(Immediate(StackFrame::TypeToMarker(type)));
2423 1110541 : }
2424 :
2425 646003 : void TurboAssembler::Prologue() {
2426 646003 : pushq(rbp); // Caller's frame pointer.
2427 : movq(rbp, rsp);
2428 : Push(rsi); // Callee's context.
2429 : Push(rdi); // Callee's JS function.
2430 646007 : }
2431 :
2432 461957 : void TurboAssembler::EnterFrame(StackFrame::Type type) {
2433 461957 : pushq(rbp);
2434 : movq(rbp, rsp);
2435 : Push(Immediate(StackFrame::TypeToMarker(type)));
2436 461961 : }
2437 :
2438 821553 : void TurboAssembler::LeaveFrame(StackFrame::Type type) {
2439 821553 : if (emit_debug_code()) {
2440 0 : cmpq(Operand(rbp, CommonFrameConstants::kContextOrFrameTypeOffset),
2441 0 : Immediate(StackFrame::TypeToMarker(type)));
2442 0 : Check(equal, AbortReason::kStackFrameTypesMustMatch);
2443 : }
2444 821553 : movq(rsp, rbp);
2445 821558 : popq(rbp);
2446 821407 : }
2447 :
2448 672 : void MacroAssembler::EnterExitFramePrologue(bool save_rax,
2449 : StackFrame::Type frame_type) {
2450 : DCHECK(frame_type == StackFrame::EXIT ||
2451 : frame_type == StackFrame::BUILTIN_EXIT);
2452 :
2453 : // Set up the frame structure on the stack.
2454 : // All constants are relative to the frame pointer of the exit frame.
2455 : DCHECK_EQ(kFPOnStackSize + kPCOnStackSize,
2456 : ExitFrameConstants::kCallerSPDisplacement);
2457 : DCHECK_EQ(kFPOnStackSize, ExitFrameConstants::kCallerPCOffset);
2458 : DCHECK_EQ(0 * kSystemPointerSize, ExitFrameConstants::kCallerFPOffset);
2459 672 : pushq(rbp);
2460 : movq(rbp, rsp);
2461 :
2462 : // Reserve room for entry stack pointer.
2463 : Push(Immediate(StackFrame::TypeToMarker(frame_type)));
2464 : DCHECK_EQ(-2 * kSystemPointerSize, ExitFrameConstants::kSPOffset);
2465 : Push(Immediate(0)); // Saved entry sp, patched before call.
2466 :
2467 : // Save the frame pointer and the context in top.
2468 672 : if (save_rax) {
2469 : movq(r14, rax); // Backup rax in callee-save register.
2470 : }
2471 :
2472 672 : Store(
2473 : ExternalReference::Create(IsolateAddressId::kCEntryFPAddress, isolate()),
2474 672 : rbp);
2475 672 : Store(ExternalReference::Create(IsolateAddressId::kContextAddress, isolate()),
2476 672 : rsi);
2477 672 : Store(
2478 : ExternalReference::Create(IsolateAddressId::kCFunctionAddress, isolate()),
2479 672 : rbx);
2480 672 : }
2481 :
2482 :
2483 672 : void MacroAssembler::EnterExitFrameEpilogue(int arg_stack_space,
2484 : bool save_doubles) {
2485 : #ifdef _WIN64
2486 : const int kShadowSpace = 4;
2487 : arg_stack_space += kShadowSpace;
2488 : #endif
2489 : // Optionally save all XMM registers.
2490 672 : if (save_doubles) {
2491 224 : int space = XMMRegister::kNumRegisters * kDoubleSize +
2492 224 : arg_stack_space * kSystemPointerSize;
2493 224 : subq(rsp, Immediate(space));
2494 : int offset = -ExitFrameConstants::kFixedFrameSizeFromFp;
2495 224 : const RegisterConfiguration* config = RegisterConfiguration::Default();
2496 6944 : for (int i = 0; i < config->num_allocatable_double_registers(); ++i) {
2497 : DoubleRegister reg =
2498 : DoubleRegister::from_code(config->GetAllocatableDoubleCode(i));
2499 6720 : Movsd(Operand(rbp, offset - ((i + 1) * kDoubleSize)), reg);
2500 : }
2501 448 : } else if (arg_stack_space > 0) {
2502 112 : subq(rsp, Immediate(arg_stack_space * kSystemPointerSize));
2503 : }
2504 :
2505 : // Get the required frame alignment for the OS.
2506 672 : const int kFrameAlignment = base::OS::ActivationFrameAlignment();
2507 672 : if (kFrameAlignment > 0) {
2508 : DCHECK(base::bits::IsPowerOfTwo(kFrameAlignment));
2509 : DCHECK(is_int8(kFrameAlignment));
2510 672 : andq(rsp, Immediate(-kFrameAlignment));
2511 : }
2512 :
2513 : // Patch the saved entry sp.
2514 1344 : movq(Operand(rbp, ExitFrameConstants::kSPOffset), rsp);
2515 672 : }
2516 :
2517 448 : void MacroAssembler::EnterExitFrame(int arg_stack_space, bool save_doubles,
2518 : StackFrame::Type frame_type) {
2519 448 : EnterExitFramePrologue(true, frame_type);
2520 :
2521 : // Set up argv in callee-saved register r15. It is reused in LeaveExitFrame,
2522 : // so it must be retained across the C-call.
2523 : int offset = StandardFrameConstants::kCallerSPOffset - kSystemPointerSize;
2524 896 : leaq(r15, Operand(rbp, r14, times_system_pointer_size, offset));
2525 :
2526 448 : EnterExitFrameEpilogue(arg_stack_space, save_doubles);
2527 448 : }
2528 :
2529 :
2530 224 : void MacroAssembler::EnterApiExitFrame(int arg_stack_space) {
2531 224 : EnterExitFramePrologue(false, StackFrame::EXIT);
2532 224 : EnterExitFrameEpilogue(arg_stack_space, false);
2533 224 : }
2534 :
2535 :
2536 560 : void MacroAssembler::LeaveExitFrame(bool save_doubles, bool pop_arguments) {
2537 : // Registers:
2538 : // r15 : argv
2539 560 : if (save_doubles) {
2540 : int offset = -ExitFrameConstants::kFixedFrameSizeFromFp;
2541 224 : const RegisterConfiguration* config = RegisterConfiguration::Default();
2542 6944 : for (int i = 0; i < config->num_allocatable_double_registers(); ++i) {
2543 : DoubleRegister reg =
2544 : DoubleRegister::from_code(config->GetAllocatableDoubleCode(i));
2545 6720 : Movsd(reg, Operand(rbp, offset - ((i + 1) * kDoubleSize)));
2546 : }
2547 : }
2548 :
2549 560 : if (pop_arguments) {
2550 : // Get the return address from the stack and restore the frame pointer.
2551 896 : movq(rcx, Operand(rbp, kFPOnStackSize));
2552 896 : movq(rbp, Operand(rbp, 0 * kSystemPointerSize));
2553 :
2554 : // Drop everything up to and including the arguments and the receiver
2555 : // from the caller stack.
2556 896 : leaq(rsp, Operand(r15, 1 * kSystemPointerSize));
2557 :
2558 : PushReturnAddressFrom(rcx);
2559 : } else {
2560 : // Otherwise just leave the exit frame.
2561 112 : leave();
2562 : }
2563 :
2564 560 : LeaveExitFrameEpilogue();
2565 560 : }
2566 :
2567 112 : void MacroAssembler::LeaveApiExitFrame() {
2568 112 : movq(rsp, rbp);
2569 112 : popq(rbp);
2570 :
2571 112 : LeaveExitFrameEpilogue();
2572 112 : }
2573 :
2574 672 : void MacroAssembler::LeaveExitFrameEpilogue() {
2575 : // Restore current context from top and clear it in debug mode.
2576 : ExternalReference context_address =
2577 672 : ExternalReference::Create(IsolateAddressId::kContextAddress, isolate());
2578 672 : Operand context_operand = ExternalReferenceAsOperand(context_address);
2579 672 : movq(rsi, context_operand);
2580 : #ifdef DEBUG
2581 : movq(context_operand, Immediate(Context::kInvalidContext));
2582 : #endif
2583 :
2584 : // Clear the top frame.
2585 : ExternalReference c_entry_fp_address =
2586 672 : ExternalReference::Create(IsolateAddressId::kCEntryFPAddress, isolate());
2587 672 : Operand c_entry_fp_operand = ExternalReferenceAsOperand(c_entry_fp_address);
2588 : movq(c_entry_fp_operand, Immediate(0));
2589 672 : }
2590 :
2591 :
2592 : #ifdef _WIN64
2593 : static const int kRegisterPassedArguments = 4;
2594 : #else
2595 : static const int kRegisterPassedArguments = 6;
2596 : #endif
2597 :
2598 :
2599 336 : void MacroAssembler::LoadNativeContextSlot(int index, Register dst) {
2600 336 : LoadTaggedPointerField(dst, NativeContextOperand());
2601 : LoadTaggedPointerField(dst, ContextOperand(dst, index));
2602 336 : }
2603 :
2604 :
2605 0 : int TurboAssembler::ArgumentStackSlotsForCFunctionCall(int num_arguments) {
2606 : // On Windows 64 stack slots are reserved by the caller for all arguments
2607 : // including the ones passed in registers, and space is always allocated for
2608 : // the four register arguments even if the function takes fewer than four
2609 : // arguments.
2610 : // On AMD64 ABI (Linux/Mac) the first six arguments are passed in registers
2611 : // and the caller does not reserve stack slots for them.
2612 : DCHECK_GE(num_arguments, 0);
2613 : #ifdef _WIN64
2614 : const int kMinimumStackSlots = kRegisterPassedArguments;
2615 : if (num_arguments < kMinimumStackSlots) return kMinimumStackSlots;
2616 : return num_arguments;
2617 : #else
2618 1528628 : if (num_arguments < kRegisterPassedArguments) return 0;
2619 94502 : return num_arguments - kRegisterPassedArguments;
2620 : #endif
2621 : }
2622 :
2623 764319 : void TurboAssembler::PrepareCallCFunction(int num_arguments) {
2624 764319 : int frame_alignment = base::OS::ActivationFrameAlignment();
2625 : DCHECK_NE(frame_alignment, 0);
2626 : DCHECK_GE(num_arguments, 0);
2627 :
2628 : // Make stack end at alignment and allocate space for arguments and old rsp.
2629 764319 : movq(kScratchRegister, rsp);
2630 : DCHECK(base::bits::IsPowerOfTwo(frame_alignment));
2631 : int argument_slots_on_stack =
2632 : ArgumentStackSlotsForCFunctionCall(num_arguments);
2633 764319 : subq(rsp, Immediate((argument_slots_on_stack + 1) * kSystemPointerSize));
2634 764319 : andq(rsp, Immediate(-frame_alignment));
2635 1528638 : movq(Operand(rsp, argument_slots_on_stack * kSystemPointerSize),
2636 : kScratchRegister);
2637 764319 : }
2638 :
2639 763168 : void TurboAssembler::CallCFunction(ExternalReference function,
2640 : int num_arguments) {
2641 763168 : LoadAddress(rax, function);
2642 763168 : CallCFunction(rax, num_arguments);
2643 763169 : }
2644 :
2645 764308 : void TurboAssembler::CallCFunction(Register function, int num_arguments) {
2646 : DCHECK_LE(num_arguments, kMaxCParameters);
2647 : DCHECK(has_frame());
2648 : // Check stack alignment.
2649 764308 : if (emit_debug_code()) {
2650 0 : CheckStackAlignment();
2651 : }
2652 :
2653 : // Save the frame pointer and PC so that the stack layout remains iterable,
2654 : // even without an ExitFrame which normally exists between JS and C frames.
2655 764308 : if (isolate() != nullptr) {
2656 365281 : Label get_pc;
2657 : DCHECK(!AreAliased(kScratchRegister, function));
2658 730563 : leaq(kScratchRegister, Operand(&get_pc, 0));
2659 365282 : bind(&get_pc);
2660 365282 : movq(ExternalReferenceAsOperand(
2661 : ExternalReference::fast_c_call_caller_pc_address(isolate())),
2662 : kScratchRegister);
2663 365282 : movq(ExternalReferenceAsOperand(
2664 : ExternalReference::fast_c_call_caller_fp_address(isolate())),
2665 : rbp);
2666 : }
2667 :
2668 764309 : call(function);
2669 :
2670 764309 : if (isolate() != nullptr) {
2671 : // We don't unset the PC; the FP is the source of truth.
2672 365282 : movq(ExternalReferenceAsOperand(
2673 : ExternalReference::fast_c_call_caller_fp_address(isolate())),
2674 : Immediate(0));
2675 : }
2676 :
2677 : DCHECK_NE(base::OS::ActivationFrameAlignment(), 0);
2678 : DCHECK_GE(num_arguments, 0);
2679 : int argument_slots_on_stack =
2680 : ArgumentStackSlotsForCFunctionCall(num_arguments);
2681 1528618 : movq(rsp, Operand(rsp, argument_slots_on_stack * kSystemPointerSize));
2682 764309 : }
2683 :
2684 643360 : void TurboAssembler::CheckPageFlag(Register object, Register scratch, int mask,
2685 : Condition cc, Label* condition_met,
2686 : Label::Distance condition_met_distance) {
2687 : DCHECK(cc == zero || cc == not_zero);
2688 643360 : if (scratch == object) {
2689 112 : andq(scratch, Immediate(~kPageAlignmentMask));
2690 : } else {
2691 643248 : movq(scratch, Immediate(~kPageAlignmentMask));
2692 : andq(scratch, object);
2693 : }
2694 643362 : if (mask < (1 << kBitsPerByte)) {
2695 1930086 : testb(Operand(scratch, MemoryChunk::kFlagsOffset),
2696 643364 : Immediate(static_cast<uint8_t>(mask)));
2697 : } else {
2698 0 : testl(Operand(scratch, MemoryChunk::kFlagsOffset), Immediate(mask));
2699 : }
2700 643362 : j(cc, condition_met, condition_met_distance);
2701 643361 : }
2702 :
2703 113 : void TurboAssembler::ComputeCodeStartAddress(Register dst) {
2704 113 : Label current;
2705 113 : bind(¤t);
2706 : int pc = pc_offset();
2707 : // Load effective address to get the address of the current instruction.
2708 226 : leaq(dst, Operand(¤t, -pc));
2709 113 : }
2710 :
2711 560 : void TurboAssembler::ResetSpeculationPoisonRegister() {
2712 : // TODO(tebbi): Perhaps, we want to put an lfence here.
2713 560 : Set(kSpeculationPoisonRegister, -1);
2714 560 : }
2715 :
2716 3335854 : void TurboAssembler::CallForDeoptimization(Address target, int deopt_id) {
2717 : NoRootArrayScope no_root_array(this);
2718 : // Save the deopt id in r13 (we don't need the roots array from now on).
2719 3335854 : movq(r13, Immediate(deopt_id));
2720 3335858 : call(target, RelocInfo::RUNTIME_ENTRY);
2721 3335854 : }
2722 :
2723 : } // namespace internal
2724 122004 : } // namespace v8
2725 :
2726 : #endif // V8_TARGET_ARCH_X64
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