OLD | NEW |
1 // Copyright 2012 the V8 project authors. All rights reserved. | 1 // Copyright 2012 the V8 project authors. All rights reserved. |
2 // Redistribution and use in source and binary forms, with or without | 2 // Redistribution and use in source and binary forms, with or without |
3 // modification, are permitted provided that the following conditions are | 3 // modification, are permitted provided that the following conditions are |
4 // met: | 4 // met: |
5 // | 5 // |
6 // * Redistributions of source code must retain the above copyright | 6 // * Redistributions of source code must retain the above copyright |
7 // notice, this list of conditions and the following disclaimer. | 7 // notice, this list of conditions and the following disclaimer. |
8 // * Redistributions in binary form must reproduce the above | 8 // * Redistributions in binary form must reproduce the above |
9 // copyright notice, this list of conditions and the following | 9 // copyright notice, this list of conditions and the following |
10 // disclaimer in the documentation and/or other materials provided | 10 // disclaimer in the documentation and/or other materials provided |
(...skipping 468 matching lines...) Expand 10 before | Expand all | Expand 10 after Loading... |
479 __ push(descriptor->register_params_[i]); | 479 __ push(descriptor->register_params_[i]); |
480 } | 480 } |
481 ExternalReference miss = descriptor->miss_handler(); | 481 ExternalReference miss = descriptor->miss_handler(); |
482 __ CallExternalReference(miss, descriptor->register_param_count_); | 482 __ CallExternalReference(miss, descriptor->register_param_count_); |
483 } | 483 } |
484 | 484 |
485 __ Ret(); | 485 __ Ret(); |
486 } | 486 } |
487 | 487 |
488 | 488 |
489 void FastNewBlockContextStub::Generate(MacroAssembler* masm) { | |
490 // Stack layout on entry: | |
491 // | |
492 // [sp]: function. | |
493 // [sp + kPointerSize]: serialized scope info | |
494 | |
495 // Try to allocate the context in new space. | |
496 Label gc; | |
497 int length = slots_ + Context::MIN_CONTEXT_SLOTS; | |
498 __ Allocate(FixedArray::SizeFor(length), r0, r1, r2, &gc, TAG_OBJECT); | |
499 | |
500 // Load the function from the stack. | |
501 __ ldr(r3, MemOperand(sp, 0)); | |
502 | |
503 // Load the serialized scope info from the stack. | |
504 __ ldr(r1, MemOperand(sp, 1 * kPointerSize)); | |
505 | |
506 // Set up the object header. | |
507 __ LoadRoot(r2, Heap::kBlockContextMapRootIndex); | |
508 __ str(r2, FieldMemOperand(r0, HeapObject::kMapOffset)); | |
509 __ mov(r2, Operand(Smi::FromInt(length))); | |
510 __ str(r2, FieldMemOperand(r0, FixedArray::kLengthOffset)); | |
511 | |
512 // If this block context is nested in the native context we get a smi | |
513 // sentinel instead of a function. The block context should get the | |
514 // canonical empty function of the native context as its closure which | |
515 // we still have to look up. | |
516 Label after_sentinel; | |
517 __ JumpIfNotSmi(r3, &after_sentinel); | |
518 if (FLAG_debug_code) { | |
519 __ cmp(r3, Operand::Zero()); | |
520 __ Assert(eq, kExpected0AsASmiSentinel); | |
521 } | |
522 __ ldr(r3, GlobalObjectOperand()); | |
523 __ ldr(r3, FieldMemOperand(r3, GlobalObject::kNativeContextOffset)); | |
524 __ ldr(r3, ContextOperand(r3, Context::CLOSURE_INDEX)); | |
525 __ bind(&after_sentinel); | |
526 | |
527 // Set up the fixed slots, copy the global object from the previous context. | |
528 __ ldr(r2, ContextOperand(cp, Context::GLOBAL_OBJECT_INDEX)); | |
529 __ str(r3, ContextOperand(r0, Context::CLOSURE_INDEX)); | |
530 __ str(cp, ContextOperand(r0, Context::PREVIOUS_INDEX)); | |
531 __ str(r1, ContextOperand(r0, Context::EXTENSION_INDEX)); | |
532 __ str(r2, ContextOperand(r0, Context::GLOBAL_OBJECT_INDEX)); | |
533 | |
534 // Initialize the rest of the slots to the hole value. | |
535 __ LoadRoot(r1, Heap::kTheHoleValueRootIndex); | |
536 for (int i = 0; i < slots_; i++) { | |
537 __ str(r1, ContextOperand(r0, i + Context::MIN_CONTEXT_SLOTS)); | |
538 } | |
539 | |
540 // Remove the on-stack argument and return. | |
541 __ mov(cp, r0); | |
542 __ add(sp, sp, Operand(2 * kPointerSize)); | |
543 __ Ret(); | |
544 | |
545 // Need to collect. Call into runtime system. | |
546 __ bind(&gc); | |
547 __ TailCallRuntime(Runtime::kPushBlockContext, 2, 1); | |
548 } | |
549 | |
550 | |
551 // Takes a Smi and converts to an IEEE 64 bit floating point value in two | 489 // Takes a Smi and converts to an IEEE 64 bit floating point value in two |
552 // registers. The format is 1 sign bit, 11 exponent bits (biased 1023) and | 490 // registers. The format is 1 sign bit, 11 exponent bits (biased 1023) and |
553 // 52 fraction bits (20 in the first word, 32 in the second). Zeros is a | 491 // 52 fraction bits (20 in the first word, 32 in the second). Zeros is a |
554 // scratch register. Destroys the source register. No GC occurs during this | 492 // scratch register. Destroys the source register. No GC occurs during this |
555 // stub so you don't have to set up the frame. | 493 // stub so you don't have to set up the frame. |
556 class ConvertToDoubleStub : public PlatformCodeStub { | 494 class ConvertToDoubleStub : public PlatformCodeStub { |
557 public: | 495 public: |
558 ConvertToDoubleStub(Register result_reg_1, | 496 ConvertToDoubleStub(Register result_reg_1, |
559 Register result_reg_2, | 497 Register result_reg_2, |
560 Register source_reg, | 498 Register source_reg, |
(...skipping 5066 matching lines...) Expand 10 before | Expand all | Expand 10 after Loading... |
5627 restore_context ? | 5565 restore_context ? |
5628 &context_restore_operand : NULL); | 5566 &context_restore_operand : NULL); |
5629 } | 5567 } |
5630 | 5568 |
5631 | 5569 |
5632 #undef __ | 5570 #undef __ |
5633 | 5571 |
5634 } } // namespace v8::internal | 5572 } } // namespace v8::internal |
5635 | 5573 |
5636 #endif // V8_TARGET_ARCH_ARM | 5574 #endif // V8_TARGET_ARCH_ARM |
OLD | NEW |