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 46380 : void MacroAssembler::Store(ExternalReference destination, Register source) {
92 46380 : 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 46380 : if (source == rax && !options().isolate_independent_code) {
102 0 : store_rax(destination);
103 : } else {
104 46380 : movq(ExternalReferenceAsOperand(destination), source);
105 : }
106 : }
107 :
108 39648 : void TurboAssembler::LoadFromConstantsTable(Register destination,
109 : int constant_index) {
110 : DCHECK(RootsTable::IsImmortalImmovable(RootIndex::kBuiltinsConstantsTable));
111 39648 : LoadRoot(destination, RootIndex::kBuiltinsConstantsTable);
112 : LoadTaggedPointerField(
113 : destination,
114 : FieldOperand(destination, FixedArray::OffsetOfElementAt(constant_index)));
115 39648 : }
116 :
117 18816 : void TurboAssembler::LoadRootRegisterOffset(Register destination,
118 : intptr_t offset) {
119 : DCHECK(is_int32(offset));
120 18816 : if (offset == 0) {
121 : Move(destination, kRootRegister);
122 : } else {
123 35840 : leaq(destination, Operand(kRootRegister, static_cast<int32_t>(offset)));
124 : }
125 18816 : }
126 :
127 807912 : void TurboAssembler::LoadRootRelative(Register destination, int32_t offset) {
128 1615824 : movq(destination, Operand(kRootRegister, offset));
129 807912 : }
130 :
131 950006 : void TurboAssembler::LoadAddress(Register destination,
132 : ExternalReference source) {
133 950006 : if (root_array_available_ && options().enable_root_array_delta_access) {
134 1205 : intptr_t delta = RootRegisterOffsetForExternalReference(isolate(), source);
135 1205 : if (is_int32(delta)) {
136 0 : leaq(destination, Operand(kRootRegister, static_cast<int32_t>(delta)));
137 0 : return;
138 : }
139 : }
140 : // Safe code.
141 : if (FLAG_embedded_builtins) {
142 950006 : if (root_array_available_ && options().isolate_independent_code) {
143 45192 : IndirectLoadExternalReference(destination, source);
144 45192 : return;
145 : }
146 : }
147 904814 : Move(destination, source);
148 : }
149 :
150 1142047 : Operand TurboAssembler::ExternalReferenceAsOperand(ExternalReference reference,
151 : Register scratch) {
152 1142047 : if (root_array_available_ && options().enable_root_array_delta_access) {
153 : int64_t delta =
154 3695 : RootRegisterOffsetForExternalReference(isolate(), reference);
155 3695 : if (is_int32(delta)) {
156 3675 : return Operand(kRootRegister, static_cast<int32_t>(delta));
157 : }
158 : }
159 1138372 : if (root_array_available_ && options().isolate_independent_code) {
160 90832 : if (IsAddressableThroughRootRegister(isolate(), reference)) {
161 : // Some external references can be efficiently loaded as an offset from
162 : // kRootRegister.
163 : intptr_t offset =
164 90216 : RootRegisterOffsetForExternalReference(isolate(), reference);
165 90216 : CHECK(is_int32(offset));
166 90216 : 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 1047540 : Move(scratch, reference);
176 1047539 : 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 1962439 : void TurboAssembler::LoadRoot(Register destination, RootIndex index) {
185 : DCHECK(root_array_available_);
186 3924888 : movq(destination,
187 : Operand(kRootRegister, RootRegisterOffsetForRootIndex(index)));
188 1962449 : }
189 :
190 672 : void MacroAssembler::PushRoot(RootIndex index) {
191 : DCHECK(root_array_available_);
192 1344 : Push(Operand(kRootRegister, RootRegisterOffsetForRootIndex(index)));
193 672 : }
194 :
195 563174 : void TurboAssembler::CompareRoot(Register with, RootIndex index) {
196 : DCHECK(root_array_available_);
197 563174 : 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 562166 : cmpq(with, Operand(kRootRegister, RootRegisterOffsetForRootIndex(index)));
204 : }
205 563183 : }
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 734455 : void TurboAssembler::LoadTaggedPointerField(Register destination,
221 : Operand field_operand) {
222 : #ifdef V8_COMPRESS_POINTERS
223 775951 : DecompressTaggedPointer(destination, field_operand);
224 : #else
225 : mov_tagged(destination, field_operand);
226 : #endif
227 734455 : }
228 :
229 336 : void TurboAssembler::LoadAnyTaggedField(Register destination,
230 : Operand field_operand,
231 : Register scratch) {
232 : #ifdef V8_COMPRESS_POINTERS
233 336 : DecompressAnyTagged(destination, field_operand, scratch);
234 : #else
235 : 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));
243 112 : 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));
256 112 : 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 197938 : void TurboAssembler::StoreTaggedField(Operand dst_field_operand,
268 : Immediate value) {
269 : #ifdef V8_COMPRESS_POINTERS
270 197938 : RecordComment("[ StoreTagged");
271 197938 : movl(dst_field_operand, value);
272 197938 : RecordComment("]");
273 : #else
274 : movq(dst_field_operand, value);
275 : #endif
276 197938 : }
277 :
278 2618236 : void TurboAssembler::StoreTaggedField(Operand dst_field_operand,
279 : Register value) {
280 : #ifdef V8_COMPRESS_POINTERS
281 2618236 : RecordComment("[ StoreTagged");
282 2618238 : movl(dst_field_operand, value);
283 2618239 : RecordComment("]");
284 : #else
285 : movq(dst_field_operand, value);
286 : #endif
287 2618242 : }
288 :
289 87022 : void TurboAssembler::DecompressTaggedSigned(Register destination,
290 : Operand field_operand) {
291 87022 : RecordComment("[ DecompressTaggedSigned");
292 87023 : movsxlq(destination, field_operand);
293 87023 : RecordComment("]");
294 87023 : }
295 :
296 2017128 : void TurboAssembler::DecompressTaggedPointer(Register destination,
297 : Operand field_operand) {
298 2017128 : RecordComment("[ DecompressTaggedPointer");
299 2017147 : movsxlq(destination, field_operand);
300 : addq(destination, kRootRegister);
301 2017143 : RecordComment("]");
302 2017142 : }
303 :
304 2933096 : void TurboAssembler::DecompressAnyTagged(Register destination,
305 : Operand field_operand,
306 : Register scratch) {
307 : DCHECK(!AreAliased(destination, scratch));
308 2933096 : RecordComment("[ DecompressAnyTagged");
309 2933099 : 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 2933100 : 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 2933097 : RecordComment("]");
329 2933100 : }
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 329007 : void TurboAssembler::SaveRegisters(RegList registers) {
372 : DCHECK_GT(NumRegs(registers), 0);
373 10857529 : for (int i = 0; i < Register::kNumRegisters; ++i) {
374 5264250 : if ((registers >> i) & 1u) {
375 1645086 : pushq(Register::from_code(i));
376 : }
377 : }
378 329018 : }
379 :
380 329011 : void TurboAssembler::RestoreRegisters(RegList registers) {
381 : DCHECK_GT(NumRegs(registers), 0);
382 10857541 : for (int i = Register::kNumRegisters - 1; i >= 0; --i) {
383 5264258 : if ((registers >> i) & 1u) {
384 1645087 : popq(Register::from_code(i));
385 : }
386 : }
387 329018 : }
388 :
389 328706 : void TurboAssembler::CallRecordWriteStub(
390 : Register object, Register address,
391 : RememberedSetAction remembered_set_action, SaveFPRegsMode fp_mode) {
392 328706 : CallRecordWriteStub(
393 : object, address, remembered_set_action, fp_mode,
394 : isolate()->builtins()->builtin_handle(Builtins::kRecordWrite),
395 328706 : kNullAddress);
396 328706 : }
397 :
398 309 : void TurboAssembler::CallRecordWriteStub(
399 : Register object, Register address,
400 : RememberedSetAction remembered_set_action, SaveFPRegsMode fp_mode,
401 : Address wasm_target) {
402 : CallRecordWriteStub(object, address, remembered_set_action, fp_mode,
403 309 : Handle<Code>::null(), wasm_target);
404 312 : }
405 :
406 329015 : void TurboAssembler::CallRecordWriteStub(
407 : Register object, Register address,
408 : RememberedSetAction remembered_set_action, SaveFPRegsMode fp_mode,
409 : Handle<Code> code_target, Address wasm_target) {
410 : DCHECK_NE(code_target.is_null(), wasm_target == kNullAddress);
411 :
412 : RecordWriteDescriptor descriptor;
413 : RegList registers = descriptor.allocatable_registers();
414 :
415 329015 : SaveRegisters(registers);
416 :
417 : Register object_parameter(
418 329018 : descriptor.GetRegisterParameter(RecordWriteDescriptor::kObject));
419 : Register slot_parameter(
420 329018 : descriptor.GetRegisterParameter(RecordWriteDescriptor::kSlot));
421 : Register remembered_set_parameter(
422 : descriptor.GetRegisterParameter(RecordWriteDescriptor::kRememberedSet));
423 : Register fp_mode_parameter(
424 : descriptor.GetRegisterParameter(RecordWriteDescriptor::kFPMode));
425 :
426 : // Prepare argument registers for calling RecordWrite
427 : // slot_parameter <= address
428 : // object_parameter <= object
429 329018 : MovePair(slot_parameter, address, object_parameter, object);
430 :
431 : Smi smi_rsa = Smi::FromEnum(remembered_set_action);
432 : Smi smi_fm = Smi::FromEnum(fp_mode);
433 329016 : Move(remembered_set_parameter, smi_rsa);
434 329016 : if (smi_rsa != smi_fm) {
435 285788 : Move(fp_mode_parameter, smi_fm);
436 : } else {
437 43228 : movq(fp_mode_parameter, remembered_set_parameter);
438 : }
439 329017 : if (code_target.is_null()) {
440 : // Use {near_call} for direct Wasm call within a module.
441 311 : near_call(wasm_target, RelocInfo::WASM_STUB_CALL);
442 : } else {
443 328706 : Call(code_target, RelocInfo::CODE_TARGET);
444 : }
445 :
446 329018 : RestoreRegisters(registers);
447 329018 : }
448 :
449 112 : void MacroAssembler::RecordWrite(Register object, Register address,
450 : Register value, SaveFPRegsMode fp_mode,
451 : RememberedSetAction remembered_set_action,
452 : SmiCheck smi_check) {
453 : DCHECK(object != value);
454 : DCHECK(object != address);
455 : DCHECK(value != address);
456 112 : AssertNotSmi(object);
457 :
458 168 : if (remembered_set_action == OMIT_REMEMBERED_SET &&
459 56 : !FLAG_incremental_marking) {
460 0 : return;
461 : }
462 :
463 112 : if (emit_debug_code()) {
464 0 : Label ok;
465 0 : cmp_tagged(value, Operand(address, 0));
466 0 : j(equal, &ok, Label::kNear);
467 0 : int3();
468 0 : bind(&ok);
469 : }
470 :
471 : // First, check if a write barrier is even needed. The tests below
472 : // catch stores of smis and stores into the young generation.
473 112 : Label done;
474 :
475 112 : if (smi_check == INLINE_SMI_CHECK) {
476 : // Skip barrier if writing a smi.
477 0 : JumpIfSmi(value, &done);
478 : }
479 :
480 112 : CheckPageFlag(value,
481 : value, // Used as scratch.
482 : MemoryChunk::kPointersToHereAreInterestingMask, zero, &done,
483 112 : Label::kNear);
484 :
485 : CheckPageFlag(object,
486 : value, // Used as scratch.
487 : MemoryChunk::kPointersFromHereAreInterestingMask,
488 : zero,
489 : &done,
490 112 : Label::kNear);
491 :
492 112 : CallRecordWriteStub(object, address, remembered_set_action, fp_mode);
493 :
494 112 : bind(&done);
495 :
496 : // Count number of write barriers in generated code.
497 112 : isolate()->counters()->write_barriers_static()->Increment();
498 112 : IncrementCounter(isolate()->counters()->write_barriers_dynamic(), 1);
499 :
500 : // Clobber clobbered registers when running with the debug-code flag
501 : // turned on to provoke errors.
502 112 : if (emit_debug_code()) {
503 : Move(address, kZapValue, RelocInfo::NONE);
504 : Move(value, kZapValue, RelocInfo::NONE);
505 : }
506 : }
507 :
508 122 : void TurboAssembler::Assert(Condition cc, AbortReason reason) {
509 122 : if (emit_debug_code()) Check(cc, reason);
510 122 : }
511 :
512 364297 : void TurboAssembler::AssertUnreachable(AbortReason reason) {
513 364297 : if (emit_debug_code()) Abort(reason);
514 364297 : }
515 :
516 202 : void TurboAssembler::Check(Condition cc, AbortReason reason) {
517 202 : Label L;
518 202 : j(cc, &L, Label::kNear);
519 202 : Abort(reason);
520 : // Control will not return here.
521 202 : bind(&L);
522 202 : }
523 :
524 0 : void TurboAssembler::CheckStackAlignment() {
525 0 : int frame_alignment = base::OS::ActivationFrameAlignment();
526 0 : int frame_alignment_mask = frame_alignment - 1;
527 0 : if (frame_alignment > kSystemPointerSize) {
528 : DCHECK(base::bits::IsPowerOfTwo(frame_alignment));
529 0 : Label alignment_as_expected;
530 0 : testq(rsp, Immediate(frame_alignment_mask));
531 0 : j(zero, &alignment_as_expected, Label::kNear);
532 : // Abort if stack is not aligned.
533 0 : int3();
534 0 : bind(&alignment_as_expected);
535 : }
536 0 : }
537 :
538 4957 : void TurboAssembler::Abort(AbortReason reason) {
539 : #ifdef DEBUG
540 : const char* msg = GetAbortReason(reason);
541 : RecordComment("Abort message: ");
542 : RecordComment(msg);
543 : #endif
544 :
545 : // Avoid emitting call to builtin if requested.
546 4957 : if (trap_on_abort()) {
547 0 : int3();
548 0 : return;
549 : }
550 :
551 4957 : if (should_abort_hard()) {
552 : // We don't care if we constructed a frame. Just pretend we did.
553 10 : FrameScope assume_frame(this, StackFrame::NONE);
554 10 : movl(arg_reg_1, Immediate(static_cast<int>(reason)));
555 10 : PrepareCallCFunction(1);
556 10 : LoadAddress(rax, ExternalReference::abort_with_reason());
557 10 : call(rax);
558 : return;
559 : }
560 :
561 4947 : Move(rdx, Smi::FromInt(static_cast<int>(reason)));
562 :
563 4947 : if (!has_frame()) {
564 : // We don't actually want to generate a pile of code for this, so just
565 : // claim there is a stack frame, without generating one.
566 56 : FrameScope scope(this, StackFrame::NONE);
567 56 : Call(BUILTIN_CODE(isolate(), Abort), RelocInfo::CODE_TARGET);
568 : } else {
569 4891 : Call(BUILTIN_CODE(isolate(), Abort), RelocInfo::CODE_TARGET);
570 : }
571 : // Control will not return here.
572 4947 : int3();
573 : }
574 :
575 76 : void TurboAssembler::CallRuntimeWithCEntry(Runtime::FunctionId fid,
576 : Register centry) {
577 76 : const Runtime::Function* f = Runtime::FunctionForId(fid);
578 : // TODO(1236192): Most runtime routines don't need the number of
579 : // arguments passed in because it is constant. At some point we
580 : // should remove this need and make the runtime routine entry code
581 : // smarter.
582 76 : Set(rax, f->nargs);
583 76 : LoadAddress(rbx, ExternalReference::Create(f));
584 : DCHECK(!AreAliased(centry, rax, rbx));
585 : DCHECK(centry == rcx);
586 76 : CallCodeObject(centry);
587 75 : }
588 :
589 1960 : void MacroAssembler::CallRuntime(const Runtime::Function* f,
590 : int num_arguments,
591 : SaveFPRegsMode save_doubles) {
592 : // If the expected number of arguments of the runtime function is
593 : // constant, we check that the actual number of arguments match the
594 : // expectation.
595 1960 : CHECK(f->nargs < 0 || f->nargs == num_arguments);
596 :
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 1960 : Set(rax, num_arguments);
602 1960 : LoadAddress(rbx, ExternalReference::Create(f));
603 : Handle<Code> code =
604 1960 : CodeFactory::CEntry(isolate(), f->result_size, save_doubles);
605 1960 : Call(code, RelocInfo::CODE_TARGET);
606 1960 : }
607 :
608 840 : void MacroAssembler::TailCallRuntime(Runtime::FunctionId fid) {
609 : // ----------- S t a t e -------------
610 : // -- rsp[0] : return address
611 : // -- rsp[8] : argument num_arguments - 1
612 : // ...
613 : // -- rsp[8 * num_arguments] : argument 0 (receiver)
614 : //
615 : // For runtime functions with variable arguments:
616 : // -- rax : number of arguments
617 : // -----------------------------------
618 :
619 840 : const Runtime::Function* function = Runtime::FunctionForId(fid);
620 : DCHECK_EQ(1, function->result_size);
621 840 : if (function->nargs >= 0) {
622 840 : Set(rax, function->nargs);
623 : }
624 840 : JumpToExternalReference(ExternalReference::Create(fid));
625 840 : }
626 :
627 840 : void MacroAssembler::JumpToExternalReference(const ExternalReference& ext,
628 : bool builtin_exit_frame) {
629 : // Set the entry point and jump to the C entry runtime stub.
630 840 : LoadAddress(rbx, ext);
631 : Handle<Code> code = CodeFactory::CEntry(isolate(), 1, kDontSaveFPRegs,
632 840 : kArgvOnStack, builtin_exit_frame);
633 840 : Jump(code, RelocInfo::CODE_TARGET);
634 840 : }
635 :
636 : static constexpr Register saved_regs[] = {rax, rcx, rdx, rbx, rbp, rsi,
637 : rdi, r8, r9, r10, r11};
638 :
639 : static constexpr int kNumberOfSavedRegs = sizeof(saved_regs) / sizeof(Register);
640 :
641 676 : int TurboAssembler::RequiredStackSizeForCallerSaved(SaveFPRegsMode fp_mode,
642 : Register exclusion1,
643 : Register exclusion2,
644 : Register exclusion3) const {
645 : int bytes = 0;
646 15548 : for (int i = 0; i < kNumberOfSavedRegs; i++) {
647 7436 : Register reg = saved_regs[i];
648 7436 : if (reg != exclusion1 && reg != exclusion2 && reg != exclusion3) {
649 6760 : bytes += kSystemPointerSize;
650 : }
651 : }
652 :
653 : // R12 to r15 are callee save on all platforms.
654 676 : if (fp_mode == kSaveFPRegs) {
655 340 : bytes += kDoubleSize * XMMRegister::kNumRegisters;
656 : }
657 :
658 676 : return bytes;
659 : }
660 :
661 676 : int TurboAssembler::PushCallerSaved(SaveFPRegsMode fp_mode, Register exclusion1,
662 : Register exclusion2, Register exclusion3) {
663 : // We don't allow a GC during a store buffer overflow so there is no need to
664 : // store the registers in any particular way, but we do have to store and
665 : // restore them.
666 : int bytes = 0;
667 15548 : for (int i = 0; i < kNumberOfSavedRegs; i++) {
668 7436 : Register reg = saved_regs[i];
669 7436 : if (reg != exclusion1 && reg != exclusion2 && reg != exclusion3) {
670 6760 : pushq(reg);
671 6760 : bytes += kSystemPointerSize;
672 : }
673 : }
674 :
675 : // R12 to r15 are callee save on all platforms.
676 676 : if (fp_mode == kSaveFPRegs) {
677 : int delta = kDoubleSize * XMMRegister::kNumRegisters;
678 340 : subq(rsp, Immediate(delta));
679 11220 : for (int i = 0; i < XMMRegister::kNumRegisters; i++) {
680 : XMMRegister reg = XMMRegister::from_code(i);
681 10880 : Movsd(Operand(rsp, i * kDoubleSize), reg);
682 : }
683 340 : bytes += delta;
684 : }
685 :
686 676 : return bytes;
687 : }
688 :
689 676 : int TurboAssembler::PopCallerSaved(SaveFPRegsMode fp_mode, Register exclusion1,
690 : Register exclusion2, Register exclusion3) {
691 : int bytes = 0;
692 676 : if (fp_mode == kSaveFPRegs) {
693 11220 : for (int i = 0; i < XMMRegister::kNumRegisters; i++) {
694 : XMMRegister reg = XMMRegister::from_code(i);
695 10880 : Movsd(reg, Operand(rsp, i * kDoubleSize));
696 : }
697 : int delta = kDoubleSize * XMMRegister::kNumRegisters;
698 340 : addq(rsp, Immediate(kDoubleSize * XMMRegister::kNumRegisters));
699 : bytes += delta;
700 : }
701 :
702 15548 : for (int i = kNumberOfSavedRegs - 1; i >= 0; i--) {
703 7436 : Register reg = saved_regs[i];
704 7436 : if (reg != exclusion1 && reg != exclusion2 && reg != exclusion3) {
705 6760 : popq(reg);
706 6760 : bytes += kSystemPointerSize;
707 : }
708 : }
709 :
710 676 : return bytes;
711 : }
712 :
713 9195 : void TurboAssembler::Cvtss2sd(XMMRegister dst, XMMRegister src) {
714 9195 : if (CpuFeatures::IsSupported(AVX)) {
715 : CpuFeatureScope scope(this, AVX);
716 9179 : vcvtss2sd(dst, src, src);
717 : } else {
718 16 : cvtss2sd(dst, src);
719 : }
720 9195 : }
721 :
722 11349 : void TurboAssembler::Cvtss2sd(XMMRegister dst, Operand src) {
723 11349 : if (CpuFeatures::IsSupported(AVX)) {
724 : CpuFeatureScope scope(this, AVX);
725 11349 : vcvtss2sd(dst, dst, src);
726 : } else {
727 0 : cvtss2sd(dst, src);
728 : }
729 11349 : }
730 :
731 6164 : void TurboAssembler::Cvtsd2ss(XMMRegister dst, XMMRegister src) {
732 6164 : if (CpuFeatures::IsSupported(AVX)) {
733 : CpuFeatureScope scope(this, AVX);
734 6145 : vcvtsd2ss(dst, src, src);
735 : } else {
736 19 : cvtsd2ss(dst, src);
737 : }
738 6164 : }
739 :
740 11848 : void TurboAssembler::Cvtsd2ss(XMMRegister dst, Operand src) {
741 11848 : if (CpuFeatures::IsSupported(AVX)) {
742 : CpuFeatureScope scope(this, AVX);
743 11848 : vcvtsd2ss(dst, dst, src);
744 : } else {
745 0 : cvtsd2ss(dst, src);
746 : }
747 11848 : }
748 :
749 375238 : void TurboAssembler::Cvtlsi2sd(XMMRegister dst, Register src) {
750 375238 : if (CpuFeatures::IsSupported(AVX)) {
751 : CpuFeatureScope scope(this, AVX);
752 373260 : vxorpd(dst, dst, dst);
753 : vcvtlsi2sd(dst, dst, src);
754 : } else {
755 1978 : xorpd(dst, dst);
756 1978 : cvtlsi2sd(dst, src);
757 : }
758 375249 : }
759 :
760 57684 : void TurboAssembler::Cvtlsi2sd(XMMRegister dst, Operand src) {
761 57684 : if (CpuFeatures::IsSupported(AVX)) {
762 : CpuFeatureScope scope(this, AVX);
763 57504 : vxorpd(dst, dst, dst);
764 : vcvtlsi2sd(dst, dst, src);
765 : } else {
766 180 : xorpd(dst, dst);
767 180 : cvtlsi2sd(dst, src);
768 : }
769 57691 : }
770 :
771 1136 : void TurboAssembler::Cvtlsi2ss(XMMRegister dst, Register src) {
772 1136 : if (CpuFeatures::IsSupported(AVX)) {
773 : CpuFeatureScope scope(this, AVX);
774 1122 : vxorps(dst, dst, dst);
775 : vcvtlsi2ss(dst, dst, src);
776 : } else {
777 14 : xorps(dst, dst);
778 14 : cvtlsi2ss(dst, src);
779 : }
780 1136 : }
781 :
782 8 : void TurboAssembler::Cvtlsi2ss(XMMRegister dst, Operand src) {
783 8 : if (CpuFeatures::IsSupported(AVX)) {
784 : CpuFeatureScope scope(this, AVX);
785 8 : vxorps(dst, dst, dst);
786 : vcvtlsi2ss(dst, dst, src);
787 : } else {
788 0 : xorps(dst, dst);
789 0 : cvtlsi2ss(dst, src);
790 : }
791 8 : }
792 :
793 395 : void TurboAssembler::Cvtqsi2ss(XMMRegister dst, Register src) {
794 395 : if (CpuFeatures::IsSupported(AVX)) {
795 : CpuFeatureScope scope(this, AVX);
796 395 : vxorps(dst, dst, dst);
797 : vcvtqsi2ss(dst, dst, src);
798 : } else {
799 0 : xorps(dst, dst);
800 0 : cvtqsi2ss(dst, src);
801 : }
802 395 : }
803 :
804 0 : void TurboAssembler::Cvtqsi2ss(XMMRegister dst, Operand src) {
805 0 : if (CpuFeatures::IsSupported(AVX)) {
806 : CpuFeatureScope scope(this, AVX);
807 0 : vxorps(dst, dst, dst);
808 : vcvtqsi2ss(dst, dst, src);
809 : } else {
810 0 : xorps(dst, dst);
811 0 : cvtqsi2ss(dst, src);
812 : }
813 0 : }
814 :
815 20861 : void TurboAssembler::Cvtqsi2sd(XMMRegister dst, Register src) {
816 20861 : if (CpuFeatures::IsSupported(AVX)) {
817 : CpuFeatureScope scope(this, AVX);
818 20545 : vxorpd(dst, dst, dst);
819 : vcvtqsi2sd(dst, dst, src);
820 : } else {
821 316 : xorpd(dst, dst);
822 316 : cvtqsi2sd(dst, src);
823 : }
824 20876 : }
825 :
826 2015 : void TurboAssembler::Cvtqsi2sd(XMMRegister dst, Operand src) {
827 2015 : if (CpuFeatures::IsSupported(AVX)) {
828 : CpuFeatureScope scope(this, AVX);
829 1981 : vxorpd(dst, dst, dst);
830 : vcvtqsi2sd(dst, dst, src);
831 : } else {
832 34 : xorpd(dst, dst);
833 34 : cvtqsi2sd(dst, src);
834 : }
835 2015 : }
836 :
837 88 : void TurboAssembler::Cvtlui2ss(XMMRegister dst, Register src) {
838 : // Zero-extend the 32 bit value to 64 bit.
839 88 : movl(kScratchRegister, src);
840 88 : Cvtqsi2ss(dst, kScratchRegister);
841 88 : }
842 :
843 0 : void TurboAssembler::Cvtlui2ss(XMMRegister dst, Operand src) {
844 : // Zero-extend the 32 bit value to 64 bit.
845 0 : movl(kScratchRegister, src);
846 0 : Cvtqsi2ss(dst, kScratchRegister);
847 0 : }
848 :
849 395 : void TurboAssembler::Cvtlui2sd(XMMRegister dst, Register src) {
850 : // Zero-extend the 32 bit value to 64 bit.
851 395 : movl(kScratchRegister, src);
852 395 : Cvtqsi2sd(dst, kScratchRegister);
853 395 : }
854 :
855 10806 : void TurboAssembler::Cvtlui2sd(XMMRegister dst, Operand src) {
856 : // Zero-extend the 32 bit value to 64 bit.
857 10806 : movl(kScratchRegister, src);
858 10807 : Cvtqsi2sd(dst, kScratchRegister);
859 10807 : }
860 :
861 60 : void TurboAssembler::Cvtqui2ss(XMMRegister dst, Register src) {
862 60 : Label done;
863 60 : Cvtqsi2ss(dst, src);
864 60 : testq(src, src);
865 60 : j(positive, &done, Label::kNear);
866 :
867 : // Compute {src/2 | (src&1)} (retain the LSB to avoid rounding errors).
868 59 : if (src != kScratchRegister) movq(kScratchRegister, src);
869 : shrq(kScratchRegister, Immediate(1));
870 : // The LSB is shifted into CF. If it is set, set the LSB in {tmp}.
871 59 : Label msb_not_set;
872 59 : j(not_carry, &msb_not_set, Label::kNear);
873 : orq(kScratchRegister, Immediate(1));
874 59 : bind(&msb_not_set);
875 60 : Cvtqsi2ss(dst, kScratchRegister);
876 59 : addss(dst, dst);
877 60 : bind(&done);
878 60 : }
879 :
880 0 : void TurboAssembler::Cvtqui2ss(XMMRegister dst, Operand src) {
881 0 : movq(kScratchRegister, src);
882 0 : Cvtqui2ss(dst, kScratchRegister);
883 0 : }
884 :
885 3739 : void TurboAssembler::Cvtqui2sd(XMMRegister dst, Register src) {
886 3739 : Label done;
887 3739 : Cvtqsi2sd(dst, src);
888 3740 : testq(src, src);
889 3739 : j(positive, &done, Label::kNear);
890 :
891 : // Compute {src/2 | (src&1)} (retain the LSB to avoid rounding errors).
892 3739 : if (src != kScratchRegister) movq(kScratchRegister, src);
893 : shrq(kScratchRegister, Immediate(1));
894 : // The LSB is shifted into CF. If it is set, set the LSB in {tmp}.
895 3739 : Label msb_not_set;
896 3739 : j(not_carry, &msb_not_set, Label::kNear);
897 : orq(kScratchRegister, Immediate(1));
898 3740 : bind(&msb_not_set);
899 3740 : Cvtqsi2sd(dst, kScratchRegister);
900 3740 : addsd(dst, dst);
901 3740 : bind(&done);
902 3740 : }
903 :
904 1232 : void TurboAssembler::Cvtqui2sd(XMMRegister dst, Operand src) {
905 1232 : movq(kScratchRegister, src);
906 1232 : Cvtqui2sd(dst, kScratchRegister);
907 1232 : }
908 :
909 460 : void TurboAssembler::Cvttss2si(Register dst, XMMRegister src) {
910 460 : if (CpuFeatures::IsSupported(AVX)) {
911 : CpuFeatureScope scope(this, AVX);
912 460 : vcvttss2si(dst, src);
913 : } else {
914 0 : cvttss2si(dst, src);
915 : }
916 460 : }
917 :
918 0 : void TurboAssembler::Cvttss2si(Register dst, Operand src) {
919 0 : if (CpuFeatures::IsSupported(AVX)) {
920 : CpuFeatureScope scope(this, AVX);
921 0 : vcvttss2si(dst, src);
922 : } else {
923 0 : cvttss2si(dst, src);
924 : }
925 0 : }
926 :
927 108230 : void TurboAssembler::Cvttsd2si(Register dst, XMMRegister src) {
928 108230 : if (CpuFeatures::IsSupported(AVX)) {
929 : CpuFeatureScope scope(this, AVX);
930 107716 : vcvttsd2si(dst, src);
931 : } else {
932 514 : cvttsd2si(dst, src);
933 : }
934 108230 : }
935 :
936 20330 : void TurboAssembler::Cvttsd2si(Register dst, Operand src) {
937 20330 : if (CpuFeatures::IsSupported(AVX)) {
938 : CpuFeatureScope scope(this, AVX);
939 20330 : vcvttsd2si(dst, src);
940 : } else {
941 0 : cvttsd2si(dst, src);
942 : }
943 20330 : }
944 :
945 364 : void TurboAssembler::Cvttss2siq(Register dst, XMMRegister src) {
946 364 : if (CpuFeatures::IsSupported(AVX)) {
947 : CpuFeatureScope scope(this, AVX);
948 364 : vcvttss2siq(dst, src);
949 : } else {
950 0 : cvttss2siq(dst, src);
951 : }
952 364 : }
953 :
954 0 : void TurboAssembler::Cvttss2siq(Register dst, Operand src) {
955 0 : if (CpuFeatures::IsSupported(AVX)) {
956 : CpuFeatureScope scope(this, AVX);
957 0 : vcvttss2siq(dst, src);
958 : } else {
959 0 : cvttss2siq(dst, src);
960 : }
961 0 : }
962 :
963 63984 : void TurboAssembler::Cvttsd2siq(Register dst, XMMRegister src) {
964 63984 : if (CpuFeatures::IsSupported(AVX)) {
965 : CpuFeatureScope scope(this, AVX);
966 63573 : vcvttsd2siq(dst, src);
967 : } else {
968 411 : cvttsd2siq(dst, src);
969 : }
970 63994 : }
971 :
972 1 : void TurboAssembler::Cvttsd2siq(Register dst, Operand src) {
973 1 : if (CpuFeatures::IsSupported(AVX)) {
974 : CpuFeatureScope scope(this, AVX);
975 1 : vcvttsd2siq(dst, src);
976 : } else {
977 0 : cvttsd2siq(dst, src);
978 : }
979 1 : }
980 :
981 : namespace {
982 : template <typename OperandOrXMMRegister, bool is_double>
983 3104 : void ConvertFloatToUint64(TurboAssembler* tasm, Register dst,
984 : OperandOrXMMRegister src, Label* fail) {
985 3104 : Label success;
986 : // There does not exist a native float-to-uint instruction, so we have to use
987 : // a float-to-int, and postprocess the result.
988 : if (is_double) {
989 3016 : tasm->Cvttsd2siq(dst, src);
990 : } else {
991 88 : tasm->Cvttss2siq(dst, src);
992 : }
993 : // If the result of the conversion is positive, we are already done.
994 3104 : tasm->testq(dst, dst);
995 3104 : tasm->j(positive, &success);
996 : // The result of the first conversion was negative, which means that the
997 : // input value was not within the positive int64 range. We subtract 2^63
998 : // and convert it again to see if it is within the uint64 range.
999 : if (is_double) {
1000 : tasm->Move(kScratchDoubleReg, -9223372036854775808.0);
1001 3016 : tasm->addsd(kScratchDoubleReg, src);
1002 3016 : tasm->Cvttsd2siq(dst, kScratchDoubleReg);
1003 : } else {
1004 : tasm->Move(kScratchDoubleReg, -9223372036854775808.0f);
1005 88 : tasm->addss(kScratchDoubleReg, src);
1006 88 : tasm->Cvttss2siq(dst, kScratchDoubleReg);
1007 : }
1008 : tasm->testq(dst, dst);
1009 : // The only possible negative value here is 0x80000000000000000, which is
1010 : // used on x64 to indicate an integer overflow.
1011 3104 : tasm->j(negative, fail ? fail : &success);
1012 : // The input value is within uint64 range and the second conversion worked
1013 : // successfully, but we still have to undo the subtraction we did
1014 : // earlier.
1015 3104 : tasm->Set(kScratchRegister, 0x8000000000000000);
1016 : tasm->orq(dst, kScratchRegister);
1017 3104 : tasm->bind(&success);
1018 3104 : }
1019 : } // namespace
1020 :
1021 0 : void TurboAssembler::Cvttsd2uiq(Register dst, Operand src, Label* success) {
1022 0 : ConvertFloatToUint64<Operand, true>(this, dst, src, success);
1023 0 : }
1024 :
1025 3016 : void TurboAssembler::Cvttsd2uiq(Register dst, XMMRegister src, Label* success) {
1026 3016 : ConvertFloatToUint64<XMMRegister, true>(this, dst, src, success);
1027 3016 : }
1028 :
1029 0 : void TurboAssembler::Cvttss2uiq(Register dst, Operand src, Label* success) {
1030 0 : ConvertFloatToUint64<Operand, false>(this, dst, src, success);
1031 0 : }
1032 :
1033 88 : void TurboAssembler::Cvttss2uiq(Register dst, XMMRegister src, Label* success) {
1034 88 : ConvertFloatToUint64<XMMRegister, false>(this, dst, src, success);
1035 88 : }
1036 :
1037 2182146 : void TurboAssembler::Set(Register dst, int64_t x) {
1038 2182146 : if (x == 0) {
1039 849358 : xorl(dst, dst);
1040 1332788 : } else if (is_uint32(x)) {
1041 885023 : movl(dst, Immediate(static_cast<uint32_t>(x)));
1042 447765 : } else if (is_int32(x)) {
1043 196400 : movq(dst, Immediate(static_cast<int32_t>(x)));
1044 : } else {
1045 251365 : movq(dst, x);
1046 : }
1047 2182182 : }
1048 :
1049 12727 : void TurboAssembler::Set(Operand dst, intptr_t x) {
1050 12727 : if (is_int32(x)) {
1051 12727 : movq(dst, Immediate(static_cast<int32_t>(x)));
1052 : } else {
1053 0 : Set(kScratchRegister, x);
1054 0 : movq(dst, kScratchRegister);
1055 : }
1056 12727 : }
1057 :
1058 :
1059 : // ----------------------------------------------------------------------------
1060 : // Smi tagging, untagging and tag detection.
1061 :
1062 168 : Register TurboAssembler::GetSmiConstant(Smi source) {
1063 : STATIC_ASSERT(kSmiTag == 0);
1064 : int value = source->value();
1065 168 : if (value == 0) {
1066 0 : xorl(kScratchRegister, kScratchRegister);
1067 0 : return kScratchRegister;
1068 : }
1069 168 : Move(kScratchRegister, source);
1070 168 : return kScratchRegister;
1071 : }
1072 :
1073 2450952 : void TurboAssembler::Move(Register dst, Smi source) {
1074 : STATIC_ASSERT(kSmiTag == 0);
1075 : int value = source->value();
1076 2450952 : if (value == 0) {
1077 785228 : xorl(dst, dst);
1078 : } else {
1079 : Move(dst, source.ptr(), RelocInfo::NONE);
1080 : }
1081 2450947 : }
1082 :
1083 6199577 : void TurboAssembler::Move(Register dst, ExternalReference ext) {
1084 : if (FLAG_embedded_builtins) {
1085 6199577 : if (root_array_available_ && options().isolate_independent_code) {
1086 773360 : IndirectLoadExternalReference(dst, ext);
1087 773360 : return;
1088 : }
1089 : }
1090 5426217 : movq(dst, Immediate64(ext.address(), RelocInfo::EXTERNAL_REFERENCE));
1091 : }
1092 :
1093 1246 : void MacroAssembler::SmiTag(Register dst, Register src) {
1094 : STATIC_ASSERT(kSmiTag == 0);
1095 1246 : if (dst != src) {
1096 305 : movq(dst, src);
1097 : }
1098 : DCHECK(SmiValuesAre32Bits() || SmiValuesAre31Bits());
1099 1246 : shlq(dst, Immediate(kSmiShift));
1100 1246 : }
1101 :
1102 1568 : void TurboAssembler::SmiUntag(Register dst, Register src) {
1103 : STATIC_ASSERT(kSmiTag == 0);
1104 1568 : if (dst != src) {
1105 0 : movq(dst, src);
1106 : }
1107 : DCHECK(SmiValuesAre32Bits() || SmiValuesAre31Bits());
1108 1568 : sarq(dst, Immediate(kSmiShift));
1109 1568 : }
1110 :
1111 1680 : void TurboAssembler::SmiUntag(Register dst, Operand src) {
1112 : if (SmiValuesAre32Bits()) {
1113 : movl(dst, Operand(src, kSmiShift / kBitsPerByte));
1114 : // Sign extend to 64-bit.
1115 : movsxlq(dst, dst);
1116 : } else {
1117 : DCHECK(SmiValuesAre31Bits());
1118 : #ifdef V8_COMPRESS_POINTERS
1119 1680 : movsxlq(dst, src);
1120 : #else
1121 : movq(dst, src);
1122 : #endif
1123 : sarq(dst, Immediate(kSmiShift));
1124 : }
1125 1680 : }
1126 :
1127 165 : void MacroAssembler::SmiCompare(Register smi1, Register smi2) {
1128 165 : AssertSmi(smi1);
1129 165 : AssertSmi(smi2);
1130 165 : cmp_tagged(smi1, smi2);
1131 165 : }
1132 :
1133 224 : void MacroAssembler::SmiCompare(Register dst, Smi src) {
1134 224 : AssertSmi(dst);
1135 224 : Cmp(dst, src);
1136 224 : }
1137 :
1138 224 : void MacroAssembler::Cmp(Register dst, Smi src) {
1139 : DCHECK_NE(dst, kScratchRegister);
1140 224 : if (src->value() == 0) {
1141 56 : test_tagged(dst, dst);
1142 : } else {
1143 168 : Register constant_reg = GetSmiConstant(src);
1144 168 : cmp_tagged(dst, constant_reg);
1145 : }
1146 224 : }
1147 :
1148 0 : void MacroAssembler::SmiCompare(Register dst, Operand src) {
1149 0 : AssertSmi(dst);
1150 0 : AssertSmi(src);
1151 0 : cmp_tagged(dst, src);
1152 0 : }
1153 :
1154 0 : void MacroAssembler::SmiCompare(Operand dst, Register src) {
1155 0 : AssertSmi(dst);
1156 0 : AssertSmi(src);
1157 0 : cmp_tagged(dst, src);
1158 0 : }
1159 :
1160 0 : void MacroAssembler::SmiCompare(Operand dst, Smi src) {
1161 0 : AssertSmi(dst);
1162 : if (SmiValuesAre32Bits()) {
1163 : cmpl(Operand(dst, kSmiShift / kBitsPerByte), Immediate(src->value()));
1164 : } else {
1165 : DCHECK(SmiValuesAre31Bits());
1166 0 : cmpl(dst, Immediate(src));
1167 : }
1168 0 : }
1169 :
1170 0 : void MacroAssembler::Cmp(Operand dst, Smi src) {
1171 : // The Operand cannot use the smi register.
1172 0 : Register smi_reg = GetSmiConstant(src);
1173 : DCHECK(!dst.AddressUsesRegister(smi_reg));
1174 0 : cmp_tagged(dst, smi_reg);
1175 0 : }
1176 :
1177 :
1178 40 : Condition TurboAssembler::CheckSmi(Register src) {
1179 : STATIC_ASSERT(kSmiTag == 0);
1180 304883 : testb(src, Immediate(kSmiTagMask));
1181 40 : return zero;
1182 : }
1183 :
1184 0 : Condition TurboAssembler::CheckSmi(Operand src) {
1185 : STATIC_ASSERT(kSmiTag == 0);
1186 0 : testb(src, Immediate(kSmiTagMask));
1187 0 : return zero;
1188 : }
1189 :
1190 304787 : void TurboAssembler::JumpIfSmi(Register src, Label* on_smi,
1191 : Label::Distance near_jump) {
1192 : Condition smi = CheckSmi(src);
1193 304787 : j(smi, on_smi, near_jump);
1194 304787 : }
1195 :
1196 56 : void MacroAssembler::JumpIfNotSmi(Register src,
1197 : Label* on_not_smi,
1198 : Label::Distance near_jump) {
1199 : Condition smi = CheckSmi(src);
1200 56 : j(NegateCondition(smi), on_not_smi, near_jump);
1201 56 : }
1202 :
1203 0 : void MacroAssembler::JumpIfNotSmi(Operand src, Label* on_not_smi,
1204 : Label::Distance near_jump) {
1205 : Condition smi = CheckSmi(src);
1206 0 : j(NegateCondition(smi), on_not_smi, near_jump);
1207 0 : }
1208 :
1209 0 : void MacroAssembler::SmiAddConstant(Operand dst, Smi constant) {
1210 0 : if (constant->value() != 0) {
1211 : if (SmiValuesAre32Bits()) {
1212 : addl(Operand(dst, kSmiShift / kBitsPerByte),
1213 : Immediate(constant->value()));
1214 : } else {
1215 : DCHECK(SmiValuesAre31Bits());
1216 : if (kTaggedSize == kInt64Size) {
1217 : // Sign-extend value after addition
1218 : movl(kScratchRegister, dst);
1219 : addl(kScratchRegister, Immediate(constant));
1220 : movsxlq(kScratchRegister, kScratchRegister);
1221 : movq(dst, kScratchRegister);
1222 : } else {
1223 : DCHECK_EQ(kTaggedSize, kInt32Size);
1224 0 : addl(dst, Immediate(constant));
1225 : }
1226 : }
1227 : }
1228 0 : }
1229 :
1230 568 : SmiIndex MacroAssembler::SmiToIndex(Register dst,
1231 : Register src,
1232 : int shift) {
1233 : if (SmiValuesAre32Bits()) {
1234 : DCHECK(is_uint6(shift));
1235 : // There is a possible optimization if shift is in the range 60-63, but that
1236 : // will (and must) never happen.
1237 : if (dst != src) {
1238 : movq(dst, src);
1239 : }
1240 : if (shift < kSmiShift) {
1241 : sarq(dst, Immediate(kSmiShift - shift));
1242 : } else {
1243 : shlq(dst, Immediate(shift - kSmiShift));
1244 : }
1245 : return SmiIndex(dst, times_1);
1246 : } else {
1247 : DCHECK(SmiValuesAre31Bits());
1248 568 : if (dst != src) {
1249 200 : mov_tagged(dst, src);
1250 : }
1251 : // We have to sign extend the index register to 64-bit as the SMI might
1252 : // be negative.
1253 568 : movsxlq(dst, dst);
1254 568 : if (shift < kSmiShift) {
1255 50 : sarq(dst, Immediate(kSmiShift - shift));
1256 518 : } else if (shift != kSmiShift) {
1257 468 : if (shift - kSmiShift <= static_cast<int>(times_8)) {
1258 318 : return SmiIndex(dst, static_cast<ScaleFactor>(shift - kSmiShift));
1259 : }
1260 150 : shlq(dst, Immediate(shift - kSmiShift));
1261 : }
1262 250 : return SmiIndex(dst, times_1);
1263 : }
1264 : }
1265 :
1266 56 : void TurboAssembler::Push(Smi source) {
1267 56 : intptr_t smi = static_cast<intptr_t>(source.ptr());
1268 56 : if (is_int32(smi)) {
1269 56 : Push(Immediate(static_cast<int32_t>(smi)));
1270 56 : return;
1271 : }
1272 0 : int first_byte_set = base::bits::CountTrailingZeros64(smi) / 8;
1273 0 : int last_byte_set = (63 - base::bits::CountLeadingZeros64(smi)) / 8;
1274 0 : if (first_byte_set == last_byte_set) {
1275 : // This sequence has only 7 bytes, compared to the 12 bytes below.
1276 : Push(Immediate(0));
1277 0 : movb(Operand(rsp, first_byte_set),
1278 0 : Immediate(static_cast<int8_t>(smi >> (8 * first_byte_set))));
1279 0 : return;
1280 : }
1281 0 : Register constant = GetSmiConstant(source);
1282 : Push(constant);
1283 : }
1284 :
1285 : // ----------------------------------------------------------------------------
1286 :
1287 728 : void TurboAssembler::Move(Register dst, Register src) {
1288 1065189 : if (dst != src) {
1289 647568 : movq(dst, src);
1290 : }
1291 728 : }
1292 :
1293 329016 : void TurboAssembler::MovePair(Register dst0, Register src0, Register dst1,
1294 : Register src1) {
1295 329016 : if (dst0 != src1) {
1296 : // Normal case: Writing to dst0 does not destroy src1.
1297 : Move(dst0, src0);
1298 : Move(dst1, src1);
1299 1837 : } else if (dst1 != src0) {
1300 : // Only dst0 and src1 are the same register,
1301 : // but writing to dst1 does not destroy src0.
1302 : Move(dst1, src1);
1303 : Move(dst0, src0);
1304 : } else {
1305 : // dst0 == src1, and dst1 == src0, a swap is required:
1306 : // dst0 \/ src0
1307 : // dst1 /\ src1
1308 31 : xchgq(dst0, dst1);
1309 : }
1310 329016 : }
1311 :
1312 1790694 : void TurboAssembler::MoveNumber(Register dst, double value) {
1313 : int32_t smi;
1314 1790694 : if (DoubleToSmiInteger(value, &smi)) {
1315 1745470 : Move(dst, Smi::FromInt(smi));
1316 : } else {
1317 45224 : movq_heap_number(dst, value);
1318 : }
1319 1790688 : }
1320 :
1321 131259 : void TurboAssembler::Move(XMMRegister dst, uint32_t src) {
1322 131259 : if (src == 0) {
1323 : Xorps(dst, dst);
1324 : } else {
1325 : unsigned nlz = base::bits::CountLeadingZeros(src);
1326 : unsigned ntz = base::bits::CountTrailingZeros(src);
1327 : unsigned pop = base::bits::CountPopulation(src);
1328 : DCHECK_NE(0u, pop);
1329 121674 : if (pop + ntz + nlz == 32) {
1330 : Pcmpeqd(dst, dst);
1331 54202 : if (ntz) Pslld(dst, static_cast<byte>(ntz + nlz));
1332 54204 : if (nlz) Psrld(dst, static_cast<byte>(nlz));
1333 : } else {
1334 67471 : movl(kScratchRegister, Immediate(src));
1335 : Movd(dst, kScratchRegister);
1336 : }
1337 : }
1338 131260 : }
1339 :
1340 427572 : void TurboAssembler::Move(XMMRegister dst, uint64_t src) {
1341 427572 : if (src == 0) {
1342 : Xorpd(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 323584 : if (pop + ntz + nlz == 64) {
1349 : Pcmpeqd(dst, dst);
1350 215229 : if (ntz) Psllq(dst, static_cast<byte>(ntz + nlz));
1351 215234 : if (nlz) Psrlq(dst, static_cast<byte>(nlz));
1352 : } else {
1353 108356 : uint32_t lower = static_cast<uint32_t>(src);
1354 108356 : uint32_t upper = static_cast<uint32_t>(src >> 32);
1355 108356 : if (upper == 0) {
1356 31 : Move(dst, lower);
1357 : } else {
1358 108325 : movq(kScratchRegister, src);
1359 : Movq(dst, kScratchRegister);
1360 : }
1361 : }
1362 : }
1363 427586 : }
1364 :
1365 : // ----------------------------------------------------------------------------
1366 :
1367 5 : void MacroAssembler::Absps(XMMRegister dst) {
1368 5 : Andps(dst, ExternalReferenceAsOperand(
1369 : ExternalReference::address_of_float_abs_constant()));
1370 5 : }
1371 :
1372 5 : void MacroAssembler::Negps(XMMRegister dst) {
1373 5 : Xorps(dst, ExternalReferenceAsOperand(
1374 : ExternalReference::address_of_float_neg_constant()));
1375 5 : }
1376 :
1377 5 : void MacroAssembler::Abspd(XMMRegister dst) {
1378 5 : Andps(dst, ExternalReferenceAsOperand(
1379 : ExternalReference::address_of_double_abs_constant()));
1380 5 : }
1381 :
1382 5 : void MacroAssembler::Negpd(XMMRegister dst) {
1383 5 : Xorps(dst, ExternalReferenceAsOperand(
1384 : ExternalReference::address_of_double_neg_constant()));
1385 5 : }
1386 :
1387 0 : void MacroAssembler::Cmp(Register dst, Handle<Object> source) {
1388 : AllowDeferredHandleDereference smi_check;
1389 0 : if (source->IsSmi()) {
1390 0 : Cmp(dst, Smi::cast(*source));
1391 : } else {
1392 0 : Move(kScratchRegister, Handle<HeapObject>::cast(source));
1393 0 : cmp_tagged(dst, kScratchRegister);
1394 : }
1395 0 : }
1396 :
1397 112 : void MacroAssembler::Cmp(Operand dst, Handle<Object> source) {
1398 : AllowDeferredHandleDereference smi_check;
1399 112 : if (source->IsSmi()) {
1400 : Cmp(dst, Smi::cast(*source));
1401 : } else {
1402 112 : Move(kScratchRegister, Handle<HeapObject>::cast(source));
1403 112 : cmp_tagged(dst, kScratchRegister);
1404 : }
1405 112 : }
1406 :
1407 56 : void MacroAssembler::JumpIfIsInRange(Register value, unsigned lower_limit,
1408 : unsigned higher_limit, Label* on_in_range,
1409 : Label::Distance near_jump) {
1410 56 : if (lower_limit != 0) {
1411 112 : leal(kScratchRegister, Operand(value, 0u - lower_limit));
1412 56 : cmpl(kScratchRegister, Immediate(higher_limit - lower_limit));
1413 : } else {
1414 0 : cmpl(value, Immediate(higher_limit));
1415 : }
1416 56 : j(below_equal, on_in_range, near_jump);
1417 56 : }
1418 :
1419 21 : void TurboAssembler::Push(Handle<HeapObject> source) {
1420 21 : Move(kScratchRegister, source);
1421 : Push(kScratchRegister);
1422 21 : }
1423 :
1424 6856004 : void TurboAssembler::Move(Register result, Handle<HeapObject> object,
1425 : RelocInfo::Mode rmode) {
1426 : if (FLAG_embedded_builtins) {
1427 6856004 : if (root_array_available_ && options().isolate_independent_code) {
1428 47936 : IndirectLoadConstant(result, object);
1429 47936 : return;
1430 : }
1431 : }
1432 6808068 : movq(result, Immediate64(object.address(), rmode));
1433 : }
1434 :
1435 0 : void TurboAssembler::Move(Operand dst, Handle<HeapObject> object,
1436 : RelocInfo::Mode rmode) {
1437 0 : Move(kScratchRegister, object, rmode);
1438 0 : movq(dst, kScratchRegister);
1439 0 : }
1440 :
1441 2125 : void TurboAssembler::MoveStringConstant(Register result,
1442 : const StringConstantBase* string,
1443 : RelocInfo::Mode rmode) {
1444 2125 : movq_string(result, string);
1445 2125 : }
1446 :
1447 288 : void MacroAssembler::Drop(int stack_elements) {
1448 288 : if (stack_elements > 0) {
1449 288 : addq(rsp, Immediate(stack_elements * kSystemPointerSize));
1450 : }
1451 288 : }
1452 :
1453 :
1454 56 : void MacroAssembler::DropUnderReturnAddress(int stack_elements,
1455 : Register scratch) {
1456 : DCHECK_GT(stack_elements, 0);
1457 56 : if (stack_elements == 1) {
1458 56 : popq(MemOperand(rsp, 0));
1459 56 : return;
1460 : }
1461 :
1462 : PopReturnAddressTo(scratch);
1463 0 : Drop(stack_elements);
1464 : PushReturnAddressFrom(scratch);
1465 : }
1466 :
1467 672412 : void TurboAssembler::Push(Register src) { pushq(src); }
1468 :
1469 59544 : void TurboAssembler::Push(Operand src) { pushq(src); }
1470 :
1471 792491 : void MacroAssembler::PushQuad(Operand src) { pushq(src); }
1472 :
1473 1750829 : void TurboAssembler::Push(Immediate value) { pushq(value); }
1474 :
1475 0 : void MacroAssembler::PushImm32(int32_t imm32) { pushq_imm32(imm32); }
1476 :
1477 3104 : void MacroAssembler::Pop(Register dst) { popq(dst); }
1478 :
1479 44364 : void MacroAssembler::Pop(Operand dst) { popq(dst); }
1480 :
1481 704445 : void MacroAssembler::PopQuad(Operand dst) { popq(dst); }
1482 :
1483 0 : void TurboAssembler::Jump(ExternalReference ext) {
1484 0 : LoadAddress(kScratchRegister, ext);
1485 0 : jmp(kScratchRegister);
1486 0 : }
1487 :
1488 0 : void TurboAssembler::Jump(Operand op) { jmp(op); }
1489 :
1490 1024 : void TurboAssembler::Jump(Address destination, RelocInfo::Mode rmode) {
1491 : Move(kScratchRegister, destination, rmode);
1492 1024 : jmp(kScratchRegister);
1493 1024 : }
1494 :
1495 513702 : void TurboAssembler::Jump(Handle<Code> code_object, RelocInfo::Mode rmode,
1496 : Condition cc) {
1497 : DCHECK_IMPLIES(options().isolate_independent_code,
1498 : Builtins::IsIsolateIndependentBuiltin(*code_object));
1499 513702 : if (options().inline_offheap_trampolines) {
1500 464031 : int builtin_index = Builtins::kNoBuiltinId;
1501 464031 : if (isolate()->builtins()->IsBuiltinHandle(code_object, &builtin_index) &&
1502 : Builtins::IsIsolateIndependent(builtin_index)) {
1503 463839 : Label skip;
1504 463839 : if (cc != always) {
1505 463834 : if (cc == never) return;
1506 463832 : j(NegateCondition(cc), &skip, Label::kNear);
1507 : }
1508 : // Inline the trampoline.
1509 463818 : RecordCommentForOffHeapTrampoline(builtin_index);
1510 463821 : CHECK_NE(builtin_index, Builtins::kNoBuiltinId);
1511 463827 : EmbeddedData d = EmbeddedData::FromBlob();
1512 463827 : Address entry = d.InstructionStartOfBuiltin(builtin_index);
1513 : Move(kScratchRegister, entry, RelocInfo::OFF_HEAP_TARGET);
1514 463833 : jmp(kScratchRegister);
1515 463829 : bind(&skip);
1516 463833 : return;
1517 : }
1518 : }
1519 49879 : j(cc, code_object, rmode);
1520 : }
1521 :
1522 36077743 : void MacroAssembler::JumpToInstructionStream(Address entry) {
1523 : Move(kOffHeapTrampolineRegister, entry, RelocInfo::OFF_HEAP_TARGET);
1524 36077745 : jmp(kOffHeapTrampolineRegister);
1525 36077745 : }
1526 :
1527 0 : void TurboAssembler::Call(ExternalReference ext) {
1528 0 : LoadAddress(kScratchRegister, ext);
1529 0 : call(kScratchRegister);
1530 0 : }
1531 :
1532 3584 : void TurboAssembler::Call(Operand op) {
1533 3584 : if (!CpuFeatures::IsSupported(ATOM)) {
1534 3584 : call(op);
1535 : } else {
1536 0 : movq(kScratchRegister, op);
1537 0 : call(kScratchRegister);
1538 : }
1539 3584 : }
1540 :
1541 0 : void TurboAssembler::Call(Address destination, RelocInfo::Mode rmode) {
1542 : Move(kScratchRegister, destination, rmode);
1543 0 : call(kScratchRegister);
1544 0 : }
1545 :
1546 5153213 : void TurboAssembler::Call(Handle<Code> code_object, RelocInfo::Mode rmode) {
1547 : DCHECK_IMPLIES(options().isolate_independent_code,
1548 : Builtins::IsIsolateIndependentBuiltin(*code_object));
1549 5153213 : if (options().inline_offheap_trampolines) {
1550 4294468 : int builtin_index = Builtins::kNoBuiltinId;
1551 4294468 : if (isolate()->builtins()->IsBuiltinHandle(code_object, &builtin_index) &&
1552 : Builtins::IsIsolateIndependent(builtin_index)) {
1553 : // Inline the trampoline.
1554 4278257 : RecordCommentForOffHeapTrampoline(builtin_index);
1555 4278257 : CHECK_NE(builtin_index, Builtins::kNoBuiltinId);
1556 4278263 : EmbeddedData d = EmbeddedData::FromBlob();
1557 4278263 : Address entry = d.InstructionStartOfBuiltin(builtin_index);
1558 : Move(kScratchRegister, entry, RelocInfo::OFF_HEAP_TARGET);
1559 4278254 : call(kScratchRegister);
1560 : return;
1561 : }
1562 : }
1563 : DCHECK(RelocInfo::IsCodeTarget(rmode));
1564 874969 : call(code_object, rmode);
1565 : }
1566 :
1567 3584 : void TurboAssembler::CallBuiltinPointer(Register builtin_pointer) {
1568 : #if defined(V8_COMPRESS_POINTERS) || defined(V8_31BIT_SMIS_ON_64BIT_ARCH)
1569 : STATIC_ASSERT(kSmiShiftSize == 0);
1570 : STATIC_ASSERT(kSmiTagSize == 1);
1571 : STATIC_ASSERT(kSmiTag == 0);
1572 :
1573 : // The builtin_pointer register contains the builtin index as a Smi.
1574 : // Untagging is folded into the indexing operand below (we use times_4 instead
1575 : // of times_8 since smis are already shifted by one).
1576 7168 : Call(Operand(kRootRegister, builtin_pointer, times_4,
1577 3584 : IsolateData::builtin_entry_table_offset()));
1578 : #else // defined(V8_COMPRESS_POINTERS) || defined(V8_31BIT_SMIS_ON_64BIT_ARCH)
1579 : STATIC_ASSERT(kSmiShiftSize == 31);
1580 : STATIC_ASSERT(kSmiTagSize == 1);
1581 : STATIC_ASSERT(kSmiTag == 0);
1582 :
1583 : // The builtin_pointer register contains the builtin index as a Smi.
1584 : SmiUntag(builtin_pointer, builtin_pointer);
1585 : Call(Operand(kRootRegister, builtin_pointer, times_8,
1586 : IsolateData::builtin_entry_table_offset()));
1587 : #endif // defined(V8_COMPRESS_POINTERS) || defined(V8_31BIT_SMIS_ON_64BIT_ARCH)
1588 3584 : }
1589 :
1590 405539 : void TurboAssembler::LoadCodeObjectEntry(Register destination,
1591 : Register code_object) {
1592 : // Code objects are called differently depending on whether we are generating
1593 : // builtin code (which will later be embedded into the binary) or compiling
1594 : // user JS code at runtime.
1595 : // * Builtin code runs in --jitless mode and thus must not call into on-heap
1596 : // Code targets. Instead, we dispatch through the builtins entry table.
1597 : // * Codegen at runtime does not have this restriction and we can use the
1598 : // shorter, branchless instruction sequence. The assumption here is that
1599 : // targets are usually generated code and not builtin Code objects.
1600 :
1601 405539 : if (options().isolate_independent_code) {
1602 : DCHECK(root_array_available());
1603 9688 : Label if_code_is_off_heap, out;
1604 :
1605 : // Check whether the Code object is an off-heap trampoline. If so, call its
1606 : // (off-heap) entry point directly without going through the (on-heap)
1607 : // trampoline. Otherwise, just call the Code object as always.
1608 9688 : testl(FieldOperand(code_object, Code::kFlagsOffset),
1609 : Immediate(Code::IsOffHeapTrampoline::kMask));
1610 9688 : j(not_equal, &if_code_is_off_heap);
1611 :
1612 : // Not an off-heap trampoline, the entry point is at
1613 : // Code::raw_instruction_start().
1614 : Move(destination, code_object);
1615 : addq(destination, Immediate(Code::kHeaderSize - kHeapObjectTag));
1616 9688 : jmp(&out);
1617 :
1618 : // An off-heap trampoline, the entry point is loaded from the builtin entry
1619 : // table.
1620 9688 : bind(&if_code_is_off_heap);
1621 : movl(destination, FieldOperand(code_object, Code::kBuiltinIndexOffset));
1622 19376 : movq(destination,
1623 : Operand(kRootRegister, destination, times_system_pointer_size,
1624 : IsolateData::builtin_entry_table_offset()));
1625 :
1626 9688 : bind(&out);
1627 : } else {
1628 : Move(destination, code_object);
1629 395851 : addq(destination, Immediate(Code::kHeaderSize - kHeapObjectTag));
1630 : }
1631 405538 : }
1632 :
1633 24072 : void TurboAssembler::CallCodeObject(Register code_object) {
1634 24072 : LoadCodeObjectEntry(code_object, code_object);
1635 24071 : call(code_object);
1636 24071 : }
1637 :
1638 728 : void TurboAssembler::JumpCodeObject(Register code_object) {
1639 728 : LoadCodeObjectEntry(code_object, code_object);
1640 728 : jmp(code_object);
1641 728 : }
1642 :
1643 0 : void TurboAssembler::RetpolineCall(Register reg) {
1644 0 : Label setup_return, setup_target, inner_indirect_branch, capture_spec;
1645 :
1646 0 : jmp(&setup_return); // Jump past the entire retpoline below.
1647 :
1648 0 : bind(&inner_indirect_branch);
1649 0 : call(&setup_target);
1650 :
1651 0 : bind(&capture_spec);
1652 0 : pause();
1653 0 : jmp(&capture_spec);
1654 :
1655 0 : bind(&setup_target);
1656 0 : movq(Operand(rsp, 0), reg);
1657 0 : ret(0);
1658 :
1659 0 : bind(&setup_return);
1660 0 : call(&inner_indirect_branch); // Callee will return after this instruction.
1661 0 : }
1662 :
1663 0 : void TurboAssembler::RetpolineCall(Address destination, RelocInfo::Mode rmode) {
1664 : Move(kScratchRegister, destination, rmode);
1665 0 : RetpolineCall(kScratchRegister);
1666 0 : }
1667 :
1668 0 : void TurboAssembler::RetpolineJump(Register reg) {
1669 0 : Label setup_target, capture_spec;
1670 :
1671 0 : call(&setup_target);
1672 :
1673 0 : bind(&capture_spec);
1674 0 : pause();
1675 0 : jmp(&capture_spec);
1676 :
1677 0 : bind(&setup_target);
1678 0 : movq(Operand(rsp, 0), reg);
1679 0 : ret(0);
1680 0 : }
1681 :
1682 36891 : void TurboAssembler::Pextrd(Register dst, XMMRegister src, int8_t imm8) {
1683 36891 : if (imm8 == 0) {
1684 : Movd(dst, src);
1685 : return;
1686 : }
1687 36403 : if (CpuFeatures::IsSupported(SSE4_1)) {
1688 : CpuFeatureScope sse_scope(this, SSE4_1);
1689 36175 : pextrd(dst, src, imm8);
1690 : return;
1691 : }
1692 : DCHECK_EQ(1, imm8);
1693 228 : movq(dst, src);
1694 : shrq(dst, Immediate(32));
1695 : }
1696 :
1697 464 : void TurboAssembler::Pinsrd(XMMRegister dst, Register src, int8_t imm8) {
1698 464 : if (CpuFeatures::IsSupported(SSE4_1)) {
1699 : CpuFeatureScope sse_scope(this, SSE4_1);
1700 462 : pinsrd(dst, src, imm8);
1701 : return;
1702 : }
1703 : Movd(kScratchDoubleReg, src);
1704 2 : if (imm8 == 1) {
1705 : punpckldq(dst, kScratchDoubleReg);
1706 : } else {
1707 : DCHECK_EQ(0, imm8);
1708 : Movss(dst, kScratchDoubleReg);
1709 : }
1710 : }
1711 :
1712 1440 : void TurboAssembler::Pinsrd(XMMRegister dst, Operand src, int8_t imm8) {
1713 1440 : if (CpuFeatures::IsSupported(SSE4_1)) {
1714 : CpuFeatureScope sse_scope(this, SSE4_1);
1715 1440 : pinsrd(dst, src, imm8);
1716 : return;
1717 : }
1718 : Movd(kScratchDoubleReg, src);
1719 0 : if (imm8 == 1) {
1720 : punpckldq(dst, kScratchDoubleReg);
1721 : } else {
1722 : DCHECK_EQ(0, imm8);
1723 : Movss(dst, kScratchDoubleReg);
1724 : }
1725 : }
1726 :
1727 446 : void TurboAssembler::Lzcntl(Register dst, Register src) {
1728 446 : if (CpuFeatures::IsSupported(LZCNT)) {
1729 : CpuFeatureScope scope(this, LZCNT);
1730 0 : lzcntl(dst, src);
1731 : return;
1732 : }
1733 446 : Label not_zero_src;
1734 446 : bsrl(dst, src);
1735 446 : j(not_zero, ¬_zero_src, Label::kNear);
1736 446 : Set(dst, 63); // 63^31 == 32
1737 446 : bind(¬_zero_src);
1738 : xorl(dst, Immediate(31)); // for x in [0..31], 31^x == 31 - x
1739 : }
1740 :
1741 0 : void TurboAssembler::Lzcntl(Register dst, Operand src) {
1742 0 : if (CpuFeatures::IsSupported(LZCNT)) {
1743 : CpuFeatureScope scope(this, LZCNT);
1744 0 : lzcntl(dst, src);
1745 : return;
1746 : }
1747 0 : Label not_zero_src;
1748 0 : bsrl(dst, src);
1749 0 : j(not_zero, ¬_zero_src, Label::kNear);
1750 0 : Set(dst, 63); // 63^31 == 32
1751 0 : bind(¬_zero_src);
1752 : xorl(dst, Immediate(31)); // for x in [0..31], 31^x == 31 - x
1753 : }
1754 :
1755 36 : void TurboAssembler::Lzcntq(Register dst, Register src) {
1756 36 : if (CpuFeatures::IsSupported(LZCNT)) {
1757 : CpuFeatureScope scope(this, LZCNT);
1758 0 : lzcntq(dst, src);
1759 : return;
1760 : }
1761 36 : Label not_zero_src;
1762 36 : bsrq(dst, src);
1763 36 : j(not_zero, ¬_zero_src, Label::kNear);
1764 36 : Set(dst, 127); // 127^63 == 64
1765 36 : bind(¬_zero_src);
1766 : xorl(dst, Immediate(63)); // for x in [0..63], 63^x == 63 - x
1767 : }
1768 :
1769 0 : void TurboAssembler::Lzcntq(Register dst, Operand src) {
1770 0 : if (CpuFeatures::IsSupported(LZCNT)) {
1771 : CpuFeatureScope scope(this, LZCNT);
1772 0 : lzcntq(dst, src);
1773 : return;
1774 : }
1775 0 : Label not_zero_src;
1776 0 : bsrq(dst, src);
1777 0 : j(not_zero, ¬_zero_src, Label::kNear);
1778 0 : Set(dst, 127); // 127^63 == 64
1779 0 : bind(¬_zero_src);
1780 : xorl(dst, Immediate(63)); // for x in [0..63], 63^x == 63 - x
1781 : }
1782 :
1783 44 : void TurboAssembler::Tzcntq(Register dst, Register src) {
1784 44 : if (CpuFeatures::IsSupported(BMI1)) {
1785 : CpuFeatureScope scope(this, BMI1);
1786 0 : tzcntq(dst, src);
1787 : return;
1788 : }
1789 44 : Label not_zero_src;
1790 44 : bsfq(dst, src);
1791 44 : j(not_zero, ¬_zero_src, Label::kNear);
1792 : // Define the result of tzcnt(0) separately, because bsf(0) is undefined.
1793 44 : Set(dst, 64);
1794 44 : bind(¬_zero_src);
1795 : }
1796 :
1797 0 : void TurboAssembler::Tzcntq(Register dst, Operand src) {
1798 0 : if (CpuFeatures::IsSupported(BMI1)) {
1799 : CpuFeatureScope scope(this, BMI1);
1800 0 : tzcntq(dst, src);
1801 : return;
1802 : }
1803 0 : Label not_zero_src;
1804 0 : bsfq(dst, src);
1805 0 : j(not_zero, ¬_zero_src, Label::kNear);
1806 : // Define the result of tzcnt(0) separately, because bsf(0) is undefined.
1807 0 : Set(dst, 64);
1808 0 : bind(¬_zero_src);
1809 : }
1810 :
1811 332 : void TurboAssembler::Tzcntl(Register dst, Register src) {
1812 332 : if (CpuFeatures::IsSupported(BMI1)) {
1813 : CpuFeatureScope scope(this, BMI1);
1814 0 : tzcntl(dst, src);
1815 : return;
1816 : }
1817 332 : Label not_zero_src;
1818 332 : bsfl(dst, src);
1819 332 : j(not_zero, ¬_zero_src, Label::kNear);
1820 332 : Set(dst, 32); // The result of tzcnt is 32 if src = 0.
1821 332 : bind(¬_zero_src);
1822 : }
1823 :
1824 0 : void TurboAssembler::Tzcntl(Register dst, Operand src) {
1825 0 : if (CpuFeatures::IsSupported(BMI1)) {
1826 : CpuFeatureScope scope(this, BMI1);
1827 0 : tzcntl(dst, src);
1828 : return;
1829 : }
1830 0 : Label not_zero_src;
1831 0 : bsfl(dst, src);
1832 0 : j(not_zero, ¬_zero_src, Label::kNear);
1833 0 : Set(dst, 32); // The result of tzcnt is 32 if src = 0.
1834 0 : bind(¬_zero_src);
1835 : }
1836 :
1837 64 : void TurboAssembler::Popcntl(Register dst, Register src) {
1838 64 : if (CpuFeatures::IsSupported(POPCNT)) {
1839 : CpuFeatureScope scope(this, POPCNT);
1840 64 : popcntl(dst, src);
1841 64 : return;
1842 : }
1843 0 : UNREACHABLE();
1844 : }
1845 :
1846 0 : void TurboAssembler::Popcntl(Register dst, Operand src) {
1847 0 : if (CpuFeatures::IsSupported(POPCNT)) {
1848 : CpuFeatureScope scope(this, POPCNT);
1849 0 : popcntl(dst, src);
1850 0 : return;
1851 : }
1852 0 : UNREACHABLE();
1853 : }
1854 :
1855 44 : void TurboAssembler::Popcntq(Register dst, Register src) {
1856 44 : if (CpuFeatures::IsSupported(POPCNT)) {
1857 : CpuFeatureScope scope(this, POPCNT);
1858 44 : popcntq(dst, src);
1859 44 : return;
1860 : }
1861 0 : UNREACHABLE();
1862 : }
1863 :
1864 0 : void TurboAssembler::Popcntq(Register dst, Operand src) {
1865 0 : if (CpuFeatures::IsSupported(POPCNT)) {
1866 : CpuFeatureScope scope(this, POPCNT);
1867 0 : popcntq(dst, src);
1868 0 : return;
1869 : }
1870 0 : UNREACHABLE();
1871 : }
1872 :
1873 :
1874 0 : void MacroAssembler::Pushad() {
1875 : Push(rax);
1876 : Push(rcx);
1877 : Push(rdx);
1878 : Push(rbx);
1879 : // Not pushing rsp or rbp.
1880 : Push(rsi);
1881 : Push(rdi);
1882 : Push(r8);
1883 : Push(r9);
1884 : // r10 is kScratchRegister.
1885 : Push(r11);
1886 : Push(r12);
1887 : // r13 is kRootRegister.
1888 : Push(r14);
1889 : Push(r15);
1890 : STATIC_ASSERT(12 == kNumSafepointSavedRegisters);
1891 : // Use lea for symmetry with Popad.
1892 : int sp_delta = (kNumSafepointRegisters - kNumSafepointSavedRegisters) *
1893 : kSystemPointerSize;
1894 0 : leaq(rsp, Operand(rsp, -sp_delta));
1895 0 : }
1896 :
1897 :
1898 0 : void MacroAssembler::Popad() {
1899 : // Popad must not change the flags, so use lea instead of addq.
1900 : int sp_delta = (kNumSafepointRegisters - kNumSafepointSavedRegisters) *
1901 : kSystemPointerSize;
1902 0 : leaq(rsp, Operand(rsp, sp_delta));
1903 : Pop(r15);
1904 : Pop(r14);
1905 : Pop(r12);
1906 : Pop(r11);
1907 : Pop(r9);
1908 : Pop(r8);
1909 : Pop(rdi);
1910 : Pop(rsi);
1911 : Pop(rbx);
1912 : Pop(rdx);
1913 : Pop(rcx);
1914 : Pop(rax);
1915 0 : }
1916 :
1917 :
1918 : // Order general registers are pushed by Pushad:
1919 : // rax, rcx, rdx, rbx, rsi, rdi, r8, r9, r11, r14, r15.
1920 : const int
1921 : MacroAssembler::kSafepointPushRegisterIndices[Register::kNumRegisters] = {
1922 : 0,
1923 : 1,
1924 : 2,
1925 : 3,
1926 : -1,
1927 : -1,
1928 : 4,
1929 : 5,
1930 : 6,
1931 : 7,
1932 : -1,
1933 : 8,
1934 : 9,
1935 : -1,
1936 : 10,
1937 : 11
1938 : };
1939 :
1940 168 : void MacroAssembler::PushStackHandler() {
1941 : // Adjust this code if not the case.
1942 : STATIC_ASSERT(StackHandlerConstants::kSize == 2 * kSystemPointerSize);
1943 : STATIC_ASSERT(StackHandlerConstants::kNextOffset == 0);
1944 :
1945 : Push(Immediate(0)); // Padding.
1946 :
1947 : // Link the current handler as the next handler.
1948 : ExternalReference handler_address =
1949 168 : ExternalReference::Create(IsolateAddressId::kHandlerAddress, isolate());
1950 168 : Push(ExternalReferenceAsOperand(handler_address));
1951 :
1952 : // Set this new handler as the current one.
1953 168 : movq(ExternalReferenceAsOperand(handler_address), rsp);
1954 168 : }
1955 :
1956 :
1957 168 : void MacroAssembler::PopStackHandler() {
1958 : STATIC_ASSERT(StackHandlerConstants::kNextOffset == 0);
1959 : ExternalReference handler_address =
1960 168 : ExternalReference::Create(IsolateAddressId::kHandlerAddress, isolate());
1961 168 : Pop(ExternalReferenceAsOperand(handler_address));
1962 : addq(rsp, Immediate(StackHandlerConstants::kSize - kSystemPointerSize));
1963 168 : }
1964 :
1965 1392 : void TurboAssembler::Ret() { ret(0); }
1966 :
1967 2619364 : void TurboAssembler::Ret(int bytes_dropped, Register scratch) {
1968 2619364 : if (is_uint16(bytes_dropped)) {
1969 2619360 : ret(bytes_dropped);
1970 : } else {
1971 : PopReturnAddressTo(scratch);
1972 : addq(rsp, Immediate(bytes_dropped));
1973 : PushReturnAddressFrom(scratch);
1974 4 : ret(0);
1975 : }
1976 2619515 : }
1977 :
1978 560 : void MacroAssembler::CmpObjectType(Register heap_object,
1979 : InstanceType type,
1980 : Register map) {
1981 560 : LoadTaggedPointerField(map,
1982 : FieldOperand(heap_object, HeapObject::kMapOffset));
1983 560 : CmpInstanceType(map, type);
1984 560 : }
1985 :
1986 :
1987 1120 : void MacroAssembler::CmpInstanceType(Register map, InstanceType type) {
1988 2240 : cmpw(FieldOperand(map, Map::kInstanceTypeOffset), Immediate(type));
1989 1120 : }
1990 :
1991 0 : void MacroAssembler::DoubleToI(Register result_reg, XMMRegister input_reg,
1992 : XMMRegister scratch, Label* lost_precision,
1993 : Label* is_nan, Label::Distance dst) {
1994 0 : Cvttsd2si(result_reg, input_reg);
1995 0 : Cvtlsi2sd(kScratchDoubleReg, result_reg);
1996 : Ucomisd(kScratchDoubleReg, input_reg);
1997 0 : j(not_equal, lost_precision, dst);
1998 0 : j(parity_even, is_nan, dst); // NaN.
1999 0 : }
2000 :
2001 :
2002 112 : void MacroAssembler::AssertNotSmi(Register object) {
2003 112 : if (emit_debug_code()) {
2004 : Condition is_smi = CheckSmi(object);
2005 0 : Check(NegateCondition(is_smi), AbortReason::kOperandIsASmi);
2006 : }
2007 112 : }
2008 :
2009 :
2010 554 : void MacroAssembler::AssertSmi(Register object) {
2011 554 : if (emit_debug_code()) {
2012 : Condition is_smi = CheckSmi(object);
2013 0 : Check(is_smi, AbortReason::kOperandIsNotASmi);
2014 : }
2015 554 : }
2016 :
2017 0 : void MacroAssembler::AssertSmi(Operand object) {
2018 0 : if (emit_debug_code()) {
2019 : Condition is_smi = CheckSmi(object);
2020 0 : Check(is_smi, AbortReason::kOperandIsNotASmi);
2021 : }
2022 0 : }
2023 :
2024 2146521 : void TurboAssembler::AssertZeroExtended(Register int32_register) {
2025 2146521 : if (emit_debug_code()) {
2026 : DCHECK_NE(int32_register, kScratchRegister);
2027 79 : movq(kScratchRegister, int64_t{0x0000000100000000});
2028 : cmpq(kScratchRegister, int32_register);
2029 79 : Check(above_equal, AbortReason::k32BitValueInRegisterIsNotZeroExtended);
2030 : }
2031 2146521 : }
2032 :
2033 112 : void MacroAssembler::AssertConstructor(Register object) {
2034 112 : if (emit_debug_code()) {
2035 0 : testb(object, Immediate(kSmiTagMask));
2036 0 : Check(not_equal, AbortReason::kOperandIsASmiAndNotAConstructor);
2037 : Push(object);
2038 : LoadTaggedPointerField(object,
2039 : FieldOperand(object, HeapObject::kMapOffset));
2040 0 : testb(FieldOperand(object, Map::kBitFieldOffset),
2041 0 : Immediate(Map::IsConstructorBit::kMask));
2042 : Pop(object);
2043 0 : Check(not_zero, AbortReason::kOperandIsNotAConstructor);
2044 : }
2045 112 : }
2046 :
2047 280 : void MacroAssembler::AssertFunction(Register object) {
2048 280 : if (emit_debug_code()) {
2049 0 : testb(object, Immediate(kSmiTagMask));
2050 0 : Check(not_equal, AbortReason::kOperandIsASmiAndNotAFunction);
2051 : Push(object);
2052 0 : CmpObjectType(object, JS_FUNCTION_TYPE, object);
2053 : Pop(object);
2054 0 : Check(equal, AbortReason::kOperandIsNotAFunction);
2055 : }
2056 280 : }
2057 :
2058 :
2059 112 : void MacroAssembler::AssertBoundFunction(Register object) {
2060 112 : if (emit_debug_code()) {
2061 0 : testb(object, Immediate(kSmiTagMask));
2062 0 : Check(not_equal, AbortReason::kOperandIsASmiAndNotABoundFunction);
2063 : Push(object);
2064 0 : CmpObjectType(object, JS_BOUND_FUNCTION_TYPE, object);
2065 : Pop(object);
2066 0 : Check(equal, AbortReason::kOperandIsNotABoundFunction);
2067 : }
2068 112 : }
2069 :
2070 56 : void MacroAssembler::AssertGeneratorObject(Register object) {
2071 112 : if (!emit_debug_code()) return;
2072 0 : testb(object, Immediate(kSmiTagMask));
2073 0 : Check(not_equal, AbortReason::kOperandIsASmiAndNotAGeneratorObject);
2074 :
2075 : // Load map
2076 0 : Register map = object;
2077 : Push(object);
2078 : LoadTaggedPointerField(map, FieldOperand(object, HeapObject::kMapOffset));
2079 :
2080 0 : Label do_check;
2081 : // Check if JSGeneratorObject
2082 0 : CmpInstanceType(map, JS_GENERATOR_OBJECT_TYPE);
2083 0 : j(equal, &do_check);
2084 :
2085 : // Check if JSAsyncFunctionObject
2086 0 : CmpInstanceType(map, JS_ASYNC_FUNCTION_OBJECT_TYPE);
2087 0 : j(equal, &do_check);
2088 :
2089 : // Check if JSAsyncGeneratorObject
2090 0 : CmpInstanceType(map, JS_ASYNC_GENERATOR_OBJECT_TYPE);
2091 :
2092 0 : bind(&do_check);
2093 : // Restore generator object to register and perform assertion
2094 : Pop(object);
2095 0 : Check(equal, AbortReason::kOperandIsNotAGeneratorObject);
2096 : }
2097 :
2098 112 : void MacroAssembler::AssertUndefinedOrAllocationSite(Register object) {
2099 112 : if (emit_debug_code()) {
2100 0 : Label done_checking;
2101 0 : AssertNotSmi(object);
2102 0 : Cmp(object, isolate()->factory()->undefined_value());
2103 0 : j(equal, &done_checking);
2104 0 : Cmp(FieldOperand(object, 0), isolate()->factory()->allocation_site_map());
2105 0 : Assert(equal, AbortReason::kExpectedUndefinedOrCell);
2106 0 : bind(&done_checking);
2107 : }
2108 112 : }
2109 :
2110 56 : void MacroAssembler::LoadWeakValue(Register in_out, Label* target_if_cleared) {
2111 56 : cmpl(in_out, Immediate(kClearedWeakHeapObjectLower32));
2112 56 : j(equal, target_if_cleared);
2113 :
2114 : andq(in_out, Immediate(~static_cast<int32_t>(kWeakHeapObjectMask)));
2115 56 : }
2116 :
2117 168 : void MacroAssembler::IncrementCounter(StatsCounter* counter, int value) {
2118 : DCHECK_GT(value, 0);
2119 168 : if (FLAG_native_code_counters && counter->Enabled()) {
2120 : Operand counter_operand =
2121 0 : ExternalReferenceAsOperand(ExternalReference::Create(counter));
2122 0 : if (value == 1) {
2123 0 : incl(counter_operand);
2124 : } else {
2125 0 : addl(counter_operand, Immediate(value));
2126 : }
2127 : }
2128 168 : }
2129 :
2130 :
2131 0 : void MacroAssembler::DecrementCounter(StatsCounter* counter, int value) {
2132 : DCHECK_GT(value, 0);
2133 0 : if (FLAG_native_code_counters && counter->Enabled()) {
2134 : Operand counter_operand =
2135 0 : ExternalReferenceAsOperand(ExternalReference::Create(counter));
2136 0 : if (value == 1) {
2137 0 : decl(counter_operand);
2138 : } else {
2139 0 : subl(counter_operand, Immediate(value));
2140 : }
2141 : }
2142 0 : }
2143 :
2144 56 : void MacroAssembler::MaybeDropFrames() {
2145 : // Check whether we need to drop frames to restart a function on the stack.
2146 : ExternalReference restart_fp =
2147 56 : ExternalReference::debug_restart_fp_address(isolate());
2148 56 : Load(rbx, restart_fp);
2149 56 : testq(rbx, rbx);
2150 :
2151 56 : Label dont_drop;
2152 56 : j(zero, &dont_drop, Label::kNear);
2153 56 : Jump(BUILTIN_CODE(isolate(), FrameDropperTrampoline), RelocInfo::CODE_TARGET);
2154 :
2155 56 : bind(&dont_drop);
2156 56 : }
2157 :
2158 1120 : void TurboAssembler::PrepareForTailCall(const ParameterCount& callee_args_count,
2159 : Register caller_args_count_reg,
2160 : Register scratch0, Register scratch1) {
2161 : #if DEBUG
2162 : if (callee_args_count.is_reg()) {
2163 : DCHECK(!AreAliased(callee_args_count.reg(), caller_args_count_reg, scratch0,
2164 : scratch1));
2165 : } else {
2166 : DCHECK(!AreAliased(caller_args_count_reg, scratch0, scratch1));
2167 : }
2168 : #endif
2169 :
2170 : // Calculate the destination address where we will put the return address
2171 : // after we drop current frame.
2172 1120 : Register new_sp_reg = scratch0;
2173 1120 : if (callee_args_count.is_reg()) {
2174 1120 : subq(caller_args_count_reg, callee_args_count.reg());
2175 2240 : leaq(new_sp_reg,
2176 : Operand(rbp, caller_args_count_reg, times_system_pointer_size,
2177 : StandardFrameConstants::kCallerPCOffset));
2178 : } else {
2179 0 : leaq(new_sp_reg,
2180 : Operand(rbp, caller_args_count_reg, times_system_pointer_size,
2181 : StandardFrameConstants::kCallerPCOffset -
2182 : callee_args_count.immediate() * kSystemPointerSize));
2183 : }
2184 :
2185 1120 : if (FLAG_debug_code) {
2186 0 : cmpq(rsp, new_sp_reg);
2187 0 : Check(below, AbortReason::kStackAccessBelowStackPointer);
2188 : }
2189 :
2190 : // Copy return address from caller's frame to current frame's return address
2191 : // to avoid its trashing and let the following loop copy it to the right
2192 : // place.
2193 1120 : Register tmp_reg = scratch1;
2194 2240 : movq(tmp_reg, Operand(rbp, StandardFrameConstants::kCallerPCOffset));
2195 2240 : movq(Operand(rsp, 0), tmp_reg);
2196 :
2197 : // Restore caller's frame pointer now as it could be overwritten by
2198 : // the copying loop.
2199 2240 : movq(rbp, Operand(rbp, StandardFrameConstants::kCallerFPOffset));
2200 :
2201 : // +2 here is to copy both receiver and return address.
2202 1120 : Register count_reg = caller_args_count_reg;
2203 1120 : if (callee_args_count.is_reg()) {
2204 2240 : leaq(count_reg, Operand(callee_args_count.reg(), 2));
2205 : } else {
2206 0 : movq(count_reg, Immediate(callee_args_count.immediate() + 2));
2207 : // TODO(ishell): Unroll copying loop for small immediate values.
2208 : }
2209 :
2210 : // Now copy callee arguments to the caller frame going backwards to avoid
2211 : // callee arguments corruption (source and destination areas could overlap).
2212 1120 : Label loop, entry;
2213 1120 : jmp(&entry, Label::kNear);
2214 1120 : bind(&loop);
2215 : decq(count_reg);
2216 2240 : movq(tmp_reg, Operand(rsp, count_reg, times_system_pointer_size, 0));
2217 2240 : movq(Operand(new_sp_reg, count_reg, times_system_pointer_size, 0), tmp_reg);
2218 1120 : bind(&entry);
2219 : cmpq(count_reg, Immediate(0));
2220 1120 : j(not_equal, &loop, Label::kNear);
2221 :
2222 : // Leave current frame.
2223 : movq(rsp, new_sp_reg);
2224 1120 : }
2225 :
2226 112 : void MacroAssembler::InvokeFunction(Register function, Register new_target,
2227 : const ParameterCount& actual,
2228 : InvokeFlag flag) {
2229 112 : LoadTaggedPointerField(
2230 : rbx, FieldOperand(function, JSFunction::kSharedFunctionInfoOffset));
2231 112 : movzxwq(rbx,
2232 : FieldOperand(rbx, SharedFunctionInfo::kFormalParameterCountOffset));
2233 :
2234 : ParameterCount expected(rbx);
2235 112 : InvokeFunction(function, new_target, expected, actual, flag);
2236 112 : }
2237 :
2238 168 : void MacroAssembler::InvokeFunction(Register function, Register new_target,
2239 : const ParameterCount& expected,
2240 : const ParameterCount& actual,
2241 : InvokeFlag flag) {
2242 : DCHECK(function == rdi);
2243 168 : LoadTaggedPointerField(rsi,
2244 : FieldOperand(function, JSFunction::kContextOffset));
2245 168 : InvokeFunctionCode(rdi, new_target, expected, actual, flag);
2246 168 : }
2247 :
2248 336 : void MacroAssembler::InvokeFunctionCode(Register function, Register new_target,
2249 : const ParameterCount& expected,
2250 : const ParameterCount& actual,
2251 : InvokeFlag flag) {
2252 : // You can't call a function without a valid frame.
2253 : DCHECK(flag == JUMP_FUNCTION || has_frame());
2254 : DCHECK(function == rdi);
2255 : DCHECK_IMPLIES(new_target.is_valid(), new_target == rdx);
2256 :
2257 : // On function call, call into the debugger if necessary.
2258 336 : CheckDebugHook(function, new_target, expected, actual);
2259 :
2260 : // Clear the new.target register if not given.
2261 336 : if (!new_target.is_valid()) {
2262 224 : LoadRoot(rdx, RootIndex::kUndefinedValue);
2263 : }
2264 :
2265 336 : Label done;
2266 336 : bool definitely_mismatches = false;
2267 : InvokePrologue(expected, actual, &done, &definitely_mismatches, flag,
2268 336 : Label::kNear);
2269 336 : if (!definitely_mismatches) {
2270 : // We call indirectly through the code field in the function to
2271 : // allow recompilation to take effect without changing any of the
2272 : // call sites.
2273 : static_assert(kJavaScriptCallCodeStartRegister == rcx, "ABI mismatch");
2274 336 : LoadTaggedPointerField(rcx,
2275 : FieldOperand(function, JSFunction::kCodeOffset));
2276 336 : if (flag == CALL_FUNCTION) {
2277 112 : CallCodeObject(rcx);
2278 : } else {
2279 : DCHECK(flag == JUMP_FUNCTION);
2280 224 : JumpCodeObject(rcx);
2281 : }
2282 336 : bind(&done);
2283 : }
2284 336 : }
2285 :
2286 336 : void MacroAssembler::InvokePrologue(const ParameterCount& expected,
2287 : const ParameterCount& actual, Label* done,
2288 : bool* definitely_mismatches,
2289 : InvokeFlag flag,
2290 : Label::Distance near_jump) {
2291 : bool definitely_matches = false;
2292 336 : *definitely_mismatches = false;
2293 336 : Label invoke;
2294 336 : if (expected.is_immediate()) {
2295 : DCHECK(actual.is_immediate());
2296 0 : Set(rax, actual.immediate());
2297 0 : if (expected.immediate() == actual.immediate()) {
2298 : definitely_matches = true;
2299 : } else {
2300 0 : if (expected.immediate() ==
2301 : SharedFunctionInfo::kDontAdaptArgumentsSentinel) {
2302 : // Don't worry about adapting arguments for built-ins that
2303 : // don't want that done. Skip adaption code by making it look
2304 : // like we have a match between expected and actual number of
2305 : // arguments.
2306 : definitely_matches = true;
2307 : } else {
2308 0 : *definitely_mismatches = true;
2309 0 : Set(rbx, expected.immediate());
2310 : }
2311 : }
2312 : } else {
2313 336 : if (actual.is_immediate()) {
2314 : // Expected is in register, actual is immediate. This is the
2315 : // case when we invoke function values without going through the
2316 : // IC mechanism.
2317 0 : Set(rax, actual.immediate());
2318 0 : cmpq(expected.reg(), Immediate(actual.immediate()));
2319 0 : j(equal, &invoke, Label::kNear);
2320 : DCHECK(expected.reg() == rbx);
2321 336 : } else if (expected.reg() != actual.reg()) {
2322 : // Both expected and actual are in (different) registers. This
2323 : // is the case when we invoke functions using call and apply.
2324 280 : cmpq(expected.reg(), actual.reg());
2325 280 : j(equal, &invoke, Label::kNear);
2326 : DCHECK(actual.reg() == rax);
2327 : DCHECK(expected.reg() == rbx);
2328 : } else {
2329 : definitely_matches = true;
2330 : Move(rax, actual.reg());
2331 : }
2332 : }
2333 :
2334 336 : if (!definitely_matches) {
2335 280 : Handle<Code> adaptor = BUILTIN_CODE(isolate(), ArgumentsAdaptorTrampoline);
2336 280 : if (flag == CALL_FUNCTION) {
2337 112 : Call(adaptor, RelocInfo::CODE_TARGET);
2338 112 : if (!*definitely_mismatches) {
2339 112 : jmp(done, near_jump);
2340 : }
2341 : } else {
2342 168 : Jump(adaptor, RelocInfo::CODE_TARGET);
2343 : }
2344 280 : bind(&invoke);
2345 : }
2346 336 : }
2347 :
2348 336 : void MacroAssembler::CheckDebugHook(Register fun, Register new_target,
2349 : const ParameterCount& expected,
2350 : const ParameterCount& actual) {
2351 336 : Label skip_hook;
2352 : ExternalReference debug_hook_active =
2353 336 : ExternalReference::debug_hook_on_function_call_address(isolate());
2354 : Operand debug_hook_active_operand =
2355 336 : ExternalReferenceAsOperand(debug_hook_active);
2356 336 : cmpb(debug_hook_active_operand, Immediate(0));
2357 336 : j(equal, &skip_hook);
2358 :
2359 : {
2360 : FrameScope frame(this,
2361 672 : has_frame() ? StackFrame::NONE : StackFrame::INTERNAL);
2362 336 : if (expected.is_reg()) {
2363 336 : SmiTag(expected.reg(), expected.reg());
2364 : Push(expected.reg());
2365 : }
2366 336 : if (actual.is_reg()) {
2367 336 : SmiTag(actual.reg(), actual.reg());
2368 : Push(actual.reg());
2369 336 : SmiUntag(actual.reg(), actual.reg());
2370 : }
2371 336 : if (new_target.is_valid()) {
2372 : Push(new_target);
2373 : }
2374 : Push(fun);
2375 : Push(fun);
2376 336 : Push(StackArgumentsAccessor(rbp, actual).GetReceiverOperand());
2377 336 : CallRuntime(Runtime::kDebugOnFunctionCall);
2378 : Pop(fun);
2379 336 : if (new_target.is_valid()) {
2380 : Pop(new_target);
2381 : }
2382 336 : if (actual.is_reg()) {
2383 : Pop(actual.reg());
2384 336 : SmiUntag(actual.reg(), actual.reg());
2385 : }
2386 336 : if (expected.is_reg()) {
2387 : Pop(expected.reg());
2388 336 : SmiUntag(expected.reg(), expected.reg());
2389 : }
2390 : }
2391 336 : bind(&skip_hook);
2392 336 : }
2393 :
2394 989526 : void TurboAssembler::StubPrologue(StackFrame::Type type) {
2395 989526 : pushq(rbp); // Caller's frame pointer.
2396 : movq(rbp, rsp);
2397 : Push(Immediate(StackFrame::TypeToMarker(type)));
2398 989742 : }
2399 :
2400 644072 : void TurboAssembler::Prologue() {
2401 644072 : pushq(rbp); // Caller's frame pointer.
2402 : movq(rbp, rsp);
2403 : Push(rsi); // Callee's context.
2404 : Push(rdi); // Callee's JS function.
2405 644072 : }
2406 :
2407 595130 : void TurboAssembler::EnterFrame(StackFrame::Type type) {
2408 595130 : pushq(rbp);
2409 : movq(rbp, rsp);
2410 : Push(Immediate(StackFrame::TypeToMarker(type)));
2411 595206 : }
2412 :
2413 947041 : void TurboAssembler::LeaveFrame(StackFrame::Type type) {
2414 947041 : if (emit_debug_code()) {
2415 0 : cmpq(Operand(rbp, CommonFrameConstants::kContextOrFrameTypeOffset),
2416 0 : Immediate(StackFrame::TypeToMarker(type)));
2417 0 : Check(equal, AbortReason::kStackFrameTypesMustMatch);
2418 : }
2419 947041 : movq(rsp, rbp);
2420 947139 : popq(rbp);
2421 946777 : }
2422 :
2423 672 : void MacroAssembler::EnterExitFramePrologue(bool save_rax,
2424 : StackFrame::Type frame_type) {
2425 : DCHECK(frame_type == StackFrame::EXIT ||
2426 : frame_type == StackFrame::BUILTIN_EXIT);
2427 :
2428 : // Set up the frame structure on the stack.
2429 : // All constants are relative to the frame pointer of the exit frame.
2430 : DCHECK_EQ(kFPOnStackSize + kPCOnStackSize,
2431 : ExitFrameConstants::kCallerSPDisplacement);
2432 : DCHECK_EQ(kFPOnStackSize, ExitFrameConstants::kCallerPCOffset);
2433 : DCHECK_EQ(0 * kSystemPointerSize, ExitFrameConstants::kCallerFPOffset);
2434 672 : pushq(rbp);
2435 : movq(rbp, rsp);
2436 :
2437 : // Reserve room for entry stack pointer.
2438 : Push(Immediate(StackFrame::TypeToMarker(frame_type)));
2439 : DCHECK_EQ(-2 * kSystemPointerSize, ExitFrameConstants::kSPOffset);
2440 : Push(Immediate(0)); // Saved entry sp, patched before call.
2441 :
2442 : // Save the frame pointer and the context in top.
2443 672 : if (save_rax) {
2444 : movq(r14, rax); // Backup rax in callee-save register.
2445 : }
2446 :
2447 672 : Store(
2448 : ExternalReference::Create(IsolateAddressId::kCEntryFPAddress, isolate()),
2449 672 : rbp);
2450 672 : Store(ExternalReference::Create(IsolateAddressId::kContextAddress, isolate()),
2451 672 : rsi);
2452 672 : Store(
2453 : ExternalReference::Create(IsolateAddressId::kCFunctionAddress, isolate()),
2454 672 : rbx);
2455 672 : }
2456 :
2457 :
2458 672 : void MacroAssembler::EnterExitFrameEpilogue(int arg_stack_space,
2459 : bool save_doubles) {
2460 : #ifdef _WIN64
2461 : const int kShadowSpace = 4;
2462 : arg_stack_space += kShadowSpace;
2463 : #endif
2464 : // Optionally save all XMM registers.
2465 672 : if (save_doubles) {
2466 224 : int space = XMMRegister::kNumRegisters * kDoubleSize +
2467 224 : arg_stack_space * kSystemPointerSize;
2468 224 : subq(rsp, Immediate(space));
2469 : int offset = -ExitFrameConstants::kFixedFrameSizeFromFp;
2470 224 : const RegisterConfiguration* config = RegisterConfiguration::Default();
2471 6944 : for (int i = 0; i < config->num_allocatable_double_registers(); ++i) {
2472 : DoubleRegister reg =
2473 : DoubleRegister::from_code(config->GetAllocatableDoubleCode(i));
2474 6720 : Movsd(Operand(rbp, offset - ((i + 1) * kDoubleSize)), reg);
2475 : }
2476 448 : } else if (arg_stack_space > 0) {
2477 112 : subq(rsp, Immediate(arg_stack_space * kSystemPointerSize));
2478 : }
2479 :
2480 : // Get the required frame alignment for the OS.
2481 672 : const int kFrameAlignment = base::OS::ActivationFrameAlignment();
2482 672 : if (kFrameAlignment > 0) {
2483 : DCHECK(base::bits::IsPowerOfTwo(kFrameAlignment));
2484 : DCHECK(is_int8(kFrameAlignment));
2485 672 : andq(rsp, Immediate(-kFrameAlignment));
2486 : }
2487 :
2488 : // Patch the saved entry sp.
2489 1344 : movq(Operand(rbp, ExitFrameConstants::kSPOffset), rsp);
2490 672 : }
2491 :
2492 448 : void MacroAssembler::EnterExitFrame(int arg_stack_space, bool save_doubles,
2493 : StackFrame::Type frame_type) {
2494 448 : EnterExitFramePrologue(true, frame_type);
2495 :
2496 : // Set up argv in callee-saved register r15. It is reused in LeaveExitFrame,
2497 : // so it must be retained across the C-call.
2498 : int offset = StandardFrameConstants::kCallerSPOffset - kSystemPointerSize;
2499 896 : leaq(r15, Operand(rbp, r14, times_system_pointer_size, offset));
2500 :
2501 448 : EnterExitFrameEpilogue(arg_stack_space, save_doubles);
2502 448 : }
2503 :
2504 :
2505 224 : void MacroAssembler::EnterApiExitFrame(int arg_stack_space) {
2506 224 : EnterExitFramePrologue(false, StackFrame::EXIT);
2507 224 : EnterExitFrameEpilogue(arg_stack_space, false);
2508 224 : }
2509 :
2510 :
2511 560 : void MacroAssembler::LeaveExitFrame(bool save_doubles, bool pop_arguments) {
2512 : // Registers:
2513 : // r15 : argv
2514 560 : if (save_doubles) {
2515 : int offset = -ExitFrameConstants::kFixedFrameSizeFromFp;
2516 224 : const RegisterConfiguration* config = RegisterConfiguration::Default();
2517 6944 : for (int i = 0; i < config->num_allocatable_double_registers(); ++i) {
2518 : DoubleRegister reg =
2519 : DoubleRegister::from_code(config->GetAllocatableDoubleCode(i));
2520 6720 : Movsd(reg, Operand(rbp, offset - ((i + 1) * kDoubleSize)));
2521 : }
2522 : }
2523 :
2524 560 : if (pop_arguments) {
2525 : // Get the return address from the stack and restore the frame pointer.
2526 896 : movq(rcx, Operand(rbp, kFPOnStackSize));
2527 896 : movq(rbp, Operand(rbp, 0 * kSystemPointerSize));
2528 :
2529 : // Drop everything up to and including the arguments and the receiver
2530 : // from the caller stack.
2531 896 : leaq(rsp, Operand(r15, 1 * kSystemPointerSize));
2532 :
2533 : PushReturnAddressFrom(rcx);
2534 : } else {
2535 : // Otherwise just leave the exit frame.
2536 112 : leave();
2537 : }
2538 :
2539 560 : LeaveExitFrameEpilogue();
2540 560 : }
2541 :
2542 112 : void MacroAssembler::LeaveApiExitFrame() {
2543 112 : movq(rsp, rbp);
2544 112 : popq(rbp);
2545 :
2546 112 : LeaveExitFrameEpilogue();
2547 112 : }
2548 :
2549 672 : void MacroAssembler::LeaveExitFrameEpilogue() {
2550 : // Restore current context from top and clear it in debug mode.
2551 : ExternalReference context_address =
2552 672 : ExternalReference::Create(IsolateAddressId::kContextAddress, isolate());
2553 672 : Operand context_operand = ExternalReferenceAsOperand(context_address);
2554 672 : movq(rsi, context_operand);
2555 : #ifdef DEBUG
2556 : movq(context_operand, Immediate(Context::kInvalidContext));
2557 : #endif
2558 :
2559 : // Clear the top frame.
2560 : ExternalReference c_entry_fp_address =
2561 672 : ExternalReference::Create(IsolateAddressId::kCEntryFPAddress, isolate());
2562 672 : Operand c_entry_fp_operand = ExternalReferenceAsOperand(c_entry_fp_address);
2563 : movq(c_entry_fp_operand, Immediate(0));
2564 672 : }
2565 :
2566 :
2567 : #ifdef _WIN64
2568 : static const int kRegisterPassedArguments = 4;
2569 : #else
2570 : static const int kRegisterPassedArguments = 6;
2571 : #endif
2572 :
2573 :
2574 336 : void MacroAssembler::LoadNativeContextSlot(int index, Register dst) {
2575 336 : LoadTaggedPointerField(dst, NativeContextOperand());
2576 : LoadTaggedPointerField(dst, ContextOperand(dst, index));
2577 336 : }
2578 :
2579 :
2580 0 : int TurboAssembler::ArgumentStackSlotsForCFunctionCall(int num_arguments) {
2581 : // On Windows 64 stack slots are reserved by the caller for all arguments
2582 : // including the ones passed in registers, and space is always allocated for
2583 : // the four register arguments even if the function takes fewer than four
2584 : // arguments.
2585 : // On AMD64 ABI (Linux/Mac) the first six arguments are passed in registers
2586 : // and the caller does not reserve stack slots for them.
2587 : DCHECK_GE(num_arguments, 0);
2588 : #ifdef _WIN64
2589 : const int kMinimumStackSlots = kRegisterPassedArguments;
2590 : if (num_arguments < kMinimumStackSlots) return kMinimumStackSlots;
2591 : return num_arguments;
2592 : #else
2593 1524319 : if (num_arguments < kRegisterPassedArguments) return 0;
2594 93008 : return num_arguments - kRegisterPassedArguments;
2595 : #endif
2596 : }
2597 :
2598 762163 : void TurboAssembler::PrepareCallCFunction(int num_arguments) {
2599 762163 : int frame_alignment = base::OS::ActivationFrameAlignment();
2600 : DCHECK_NE(frame_alignment, 0);
2601 : DCHECK_GE(num_arguments, 0);
2602 :
2603 : // Make stack end at alignment and allocate space for arguments and old rsp.
2604 762163 : movq(kScratchRegister, rsp);
2605 : DCHECK(base::bits::IsPowerOfTwo(frame_alignment));
2606 : int argument_slots_on_stack =
2607 : ArgumentStackSlotsForCFunctionCall(num_arguments);
2608 762164 : subq(rsp, Immediate((argument_slots_on_stack + 1) * kSystemPointerSize));
2609 762163 : andq(rsp, Immediate(-frame_alignment));
2610 1524330 : movq(Operand(rsp, argument_slots_on_stack * kSystemPointerSize),
2611 : kScratchRegister);
2612 762165 : }
2613 :
2614 761013 : void TurboAssembler::CallCFunction(ExternalReference function,
2615 : int num_arguments) {
2616 761013 : LoadAddress(rax, function);
2617 761015 : CallCFunction(rax, num_arguments);
2618 761015 : }
2619 :
2620 762155 : void TurboAssembler::CallCFunction(Register function, int num_arguments) {
2621 : DCHECK_LE(num_arguments, kMaxCParameters);
2622 : DCHECK(has_frame());
2623 : // Check stack alignment.
2624 762155 : if (emit_debug_code()) {
2625 0 : CheckStackAlignment();
2626 : }
2627 :
2628 : // Save the frame pointer and PC so that the stack layout remains iterable,
2629 : // even without an ExitFrame which normally exists between JS and C frames.
2630 762155 : if (isolate() != nullptr) {
2631 363387 : Label get_pc;
2632 : DCHECK(!AreAliased(kScratchRegister, function));
2633 726774 : leaq(kScratchRegister, Operand(&get_pc, 0));
2634 363387 : bind(&get_pc);
2635 363386 : movq(ExternalReferenceAsOperand(
2636 : ExternalReference::fast_c_call_caller_pc_address(isolate())),
2637 : kScratchRegister);
2638 363387 : movq(ExternalReferenceAsOperand(
2639 : ExternalReference::fast_c_call_caller_fp_address(isolate())),
2640 : rbp);
2641 : }
2642 :
2643 762155 : call(function);
2644 :
2645 762155 : if (isolate() != nullptr) {
2646 : // We don't unset the PC; the FP is the source of truth.
2647 363387 : movq(ExternalReferenceAsOperand(
2648 : ExternalReference::fast_c_call_caller_fp_address(isolate())),
2649 : Immediate(0));
2650 : }
2651 :
2652 : DCHECK_NE(base::OS::ActivationFrameAlignment(), 0);
2653 : DCHECK_GE(num_arguments, 0);
2654 : int argument_slots_on_stack =
2655 : ArgumentStackSlotsForCFunctionCall(num_arguments);
2656 1524310 : movq(rsp, Operand(rsp, argument_slots_on_stack * kSystemPointerSize));
2657 762155 : }
2658 :
2659 658029 : void TurboAssembler::CheckPageFlag(Register object, Register scratch, int mask,
2660 : Condition cc, Label* condition_met,
2661 : Label::Distance condition_met_distance) {
2662 : DCHECK(cc == zero || cc == not_zero);
2663 658029 : if (scratch == object) {
2664 112 : andq(scratch, Immediate(~kPageAlignmentMask));
2665 : } else {
2666 657917 : movq(scratch, Immediate(~kPageAlignmentMask));
2667 : andq(scratch, object);
2668 : }
2669 658031 : if (mask < (1 << kBitsPerByte)) {
2670 1974095 : testb(Operand(scratch, MemoryChunk::kFlagsOffset),
2671 658033 : Immediate(static_cast<uint8_t>(mask)));
2672 : } else {
2673 0 : testl(Operand(scratch, MemoryChunk::kFlagsOffset), Immediate(mask));
2674 : }
2675 658033 : j(cc, condition_met, condition_met_distance);
2676 658032 : }
2677 :
2678 114 : void TurboAssembler::ComputeCodeStartAddress(Register dst) {
2679 114 : Label current;
2680 114 : bind(¤t);
2681 : int pc = pc_offset();
2682 : // Load effective address to get the address of the current instruction.
2683 228 : leaq(dst, Operand(¤t, -pc));
2684 114 : }
2685 :
2686 560 : void TurboAssembler::ResetSpeculationPoisonRegister() {
2687 : // TODO(tebbi): Perhaps, we want to put an lfence here.
2688 560 : Set(kSpeculationPoisonRegister, -1);
2689 560 : }
2690 :
2691 3354655 : void TurboAssembler::CallForDeoptimization(Address target, int deopt_id) {
2692 : NoRootArrayScope no_root_array(this);
2693 : // Save the deopt id in r13 (we don't need the roots array from now on).
2694 3354655 : movq(r13, Immediate(deopt_id));
2695 3354657 : call(target, RelocInfo::RUNTIME_ENTRY);
2696 3354658 : }
2697 :
2698 : } // namespace internal
2699 120216 : } // namespace v8
2700 :
2701 : #endif // V8_TARGET_ARCH_X64
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