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1 // Copyright (c) 2013, the Dart project authors. Please see the AUTHORS file | 1 // Copyright (c) 2013, the Dart project authors. Please see the AUTHORS file |
2 // for details. All rights reserved. Use of this source code is governed by a | 2 // for details. All rights reserved. Use of this source code is governed by a |
3 // BSD-style license that can be found in the LICENSE file. | 3 // BSD-style license that can be found in the LICENSE file. |
4 | 4 |
5 #include "vm/globals.h" // Needed here to get TARGET_ARCH_X64. | 5 #include "vm/globals.h" // Needed here to get TARGET_ARCH_X64. |
6 #if defined(TARGET_ARCH_X64) | 6 #if defined(TARGET_ARCH_X64) |
7 | 7 |
8 #include "vm/intrinsifier.h" | 8 #include "vm/intrinsifier.h" |
9 | 9 |
10 #include "vm/assembler.h" | 10 #include "vm/assembler.h" |
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69 Label fall_through; | 69 Label fall_through; |
70 | 70 |
71 // Try allocating in new space. | 71 // Try allocating in new space. |
72 const Class& cls = Class::Handle( | 72 const Class& cls = Class::Handle( |
73 Isolate::Current()->object_store()->growable_object_array_class()); | 73 Isolate::Current()->object_store()->growable_object_array_class()); |
74 __ TryAllocate(cls, &fall_through, Assembler::kFarJump, RAX, kNoRegister); | 74 __ TryAllocate(cls, &fall_through, Assembler::kFarJump, RAX, kNoRegister); |
75 | 75 |
76 // Store backing array object in growable array object. | 76 // Store backing array object in growable array object. |
77 __ movq(RCX, Address(RSP, kArrayOffset)); // data argument. | 77 __ movq(RCX, Address(RSP, kArrayOffset)); // data argument. |
78 // RAX is new, no barrier needed. | 78 // RAX is new, no barrier needed. |
79 __ StoreIntoObjectNoBarrier( | 79 __ InitializeFieldNoBarrier( |
80 RAX, | 80 RAX, |
81 FieldAddress(RAX, GrowableObjectArray::data_offset()), | 81 FieldAddress(RAX, GrowableObjectArray::data_offset()), |
82 RCX); | 82 RCX); |
83 | 83 |
84 // RAX: new growable array object start as a tagged pointer. | 84 // RAX: new growable array object start as a tagged pointer. |
85 // Store the type argument field in the growable array object. | 85 // Store the type argument field in the growable array object. |
86 __ movq(RCX, Address(RSP, kTypeArgumentsOffset)); // type argument. | 86 __ movq(RCX, Address(RSP, kTypeArgumentsOffset)); // type argument. |
87 __ StoreIntoObjectNoBarrier( | 87 __ InitializeFieldNoBarrier( |
88 RAX, | 88 RAX, |
89 FieldAddress(RAX, GrowableObjectArray::type_arguments_offset()), | 89 FieldAddress(RAX, GrowableObjectArray::type_arguments_offset()), |
90 RCX); | 90 RCX); |
91 | 91 |
92 // Set the length field in the growable array object to 0. | 92 // Set the length field in the growable array object to 0. |
93 __ ZeroInitSmiField(FieldAddress(RAX, GrowableObjectArray::length_offset())); | 93 __ ZeroInitSmiField(FieldAddress(RAX, GrowableObjectArray::length_offset())); |
94 __ ret(); // returns the newly allocated object in RAX. | 94 __ ret(); // returns the newly allocated object in RAX. |
95 | 95 |
96 __ Bind(&fall_through); | 96 __ Bind(&fall_through); |
97 } | 97 } |
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279 __ Bind(&done); \ | 279 __ Bind(&done); \ |
280 \ | 280 \ |
281 /* Get the class index and insert it into the tags. */ \ | 281 /* Get the class index and insert it into the tags. */ \ |
282 __ orq(RDI, Immediate(RawObject::ClassIdTag::encode(cid))); \ | 282 __ orq(RDI, Immediate(RawObject::ClassIdTag::encode(cid))); \ |
283 __ movq(FieldAddress(RAX, type_name::tags_offset()), RDI); /* Tags. */ \ | 283 __ movq(FieldAddress(RAX, type_name::tags_offset()), RDI); /* Tags. */ \ |
284 } \ | 284 } \ |
285 /* Set the length field. */ \ | 285 /* Set the length field. */ \ |
286 /* RAX: new object start as a tagged pointer. */ \ | 286 /* RAX: new object start as a tagged pointer. */ \ |
287 /* RCX: new object end address. */ \ | 287 /* RCX: new object end address. */ \ |
288 __ movq(RDI, Address(RSP, kArrayLengthStackOffset)); /* Array length. */ \ | 288 __ movq(RDI, Address(RSP, kArrayLengthStackOffset)); /* Array length. */ \ |
289 __ StoreIntoObjectNoBarrier(RAX, \ | 289 __ InitializeFieldNoBarrier(RAX, \ |
290 FieldAddress(RAX, type_name::length_offset()), \ | 290 FieldAddress(RAX, type_name::length_offset()), \ |
291 RDI); \ | 291 RDI); \ |
292 /* Initialize all array elements to 0. */ \ | 292 /* Initialize all array elements to 0. */ \ |
293 /* RAX: new object start as a tagged pointer. */ \ | 293 /* RAX: new object start as a tagged pointer. */ \ |
294 /* RCX: new object end address. */ \ | 294 /* RCX: new object end address. */ \ |
295 /* RDI: iterator which initially points to the start of the variable */ \ | 295 /* RDI: iterator which initially points to the start of the variable */ \ |
296 /* RBX: scratch register. */ \ | 296 /* RBX: scratch register. */ \ |
297 /* data area to be initialized. */ \ | 297 /* data area to be initialized. */ \ |
298 __ xorq(RBX, RBX); /* Zero. */ \ | 298 __ xorq(RBX, RBX); /* Zero. */ \ |
299 __ leaq(RDI, FieldAddress(RAX, sizeof(Raw##type_name))); \ | 299 __ leaq(RDI, FieldAddress(RAX, sizeof(Raw##type_name))); \ |
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1771 __ xorq(RDI, RDI); | 1771 __ xorq(RDI, RDI); |
1772 __ Bind(&done); | 1772 __ Bind(&done); |
1773 | 1773 |
1774 // Get the class index and insert it into the tags. | 1774 // Get the class index and insert it into the tags. |
1775 __ orq(RDI, Immediate(RawObject::ClassIdTag::encode(cid))); | 1775 __ orq(RDI, Immediate(RawObject::ClassIdTag::encode(cid))); |
1776 __ movq(FieldAddress(RAX, String::tags_offset()), RDI); // Tags. | 1776 __ movq(FieldAddress(RAX, String::tags_offset()), RDI); // Tags. |
1777 } | 1777 } |
1778 | 1778 |
1779 // Set the length field. | 1779 // Set the length field. |
1780 __ popq(RDI); | 1780 __ popq(RDI); |
1781 __ StoreIntoObjectNoBarrier(RAX, | 1781 __ InitializeFieldNoBarrier(RAX, |
1782 FieldAddress(RAX, String::length_offset()), | 1782 FieldAddress(RAX, String::length_offset()), |
1783 RDI); | 1783 RDI); |
1784 // Clear hash. | 1784 // Clear hash. |
1785 __ ZeroInitSmiField(FieldAddress(RAX, String::hash_offset())); | 1785 __ ZeroInitSmiField(FieldAddress(RAX, String::hash_offset())); |
1786 __ jmp(ok, Assembler::kNearJump); | 1786 __ jmp(ok, Assembler::kNearJump); |
1787 | 1787 |
1788 __ Bind(&pop_and_fail); | 1788 __ Bind(&pop_and_fail); |
1789 __ popq(RDI); | 1789 __ popq(RDI); |
1790 __ jmp(failure); | 1790 __ jmp(failure); |
1791 } | 1791 } |
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2009 // Set return value to Isolate::current_tag_. | 2009 // Set return value to Isolate::current_tag_. |
2010 __ movq(RAX, Address(RBX, Isolate::current_tag_offset())); | 2010 __ movq(RAX, Address(RBX, Isolate::current_tag_offset())); |
2011 __ ret(); | 2011 __ ret(); |
2012 } | 2012 } |
2013 | 2013 |
2014 #undef __ | 2014 #undef __ |
2015 | 2015 |
2016 } // namespace dart | 2016 } // namespace dart |
2017 | 2017 |
2018 #endif // defined TARGET_ARCH_X64 | 2018 #endif // defined TARGET_ARCH_X64 |
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