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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_ARM. | 5 #include "vm/globals.h" // Needed here to get TARGET_ARCH_ARM. |
6 #if defined(TARGET_ARCH_ARM) | 6 #if defined(TARGET_ARCH_ARM) |
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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1567 | 1567 |
1568 | 1568 |
1569 void Intrinsifier::String_getHashCode(Assembler* assembler) { | 1569 void Intrinsifier::String_getHashCode(Assembler* assembler) { |
1570 __ ldr(R0, Address(SP, 0 * kWordSize)); | 1570 __ ldr(R0, Address(SP, 0 * kWordSize)); |
1571 __ ldr(R0, FieldAddress(R0, String::hash_offset())); | 1571 __ ldr(R0, FieldAddress(R0, String::hash_offset())); |
1572 __ cmp(R0, Operand(0)); | 1572 __ cmp(R0, Operand(0)); |
1573 __ bx(LR, NE); // Hash not yet computed. | 1573 __ bx(LR, NE); // Hash not yet computed. |
1574 } | 1574 } |
1575 | 1575 |
1576 | 1576 |
1577 void Intrinsifier::StringBaseCodeUnitAt(Assembler* assembler) { | |
1578 Label fall_through, try_two_byte_string; | |
1579 | |
1580 __ ldr(R1, Address(SP, 0 * kWordSize)); // Index. | |
1581 __ ldr(R0, Address(SP, 1 * kWordSize)); // String. | |
1582 __ tst(R1, Operand(kSmiTagMask)); | |
1583 __ b(&fall_through, NE); // Index is not a Smi. | |
1584 // Range check. | |
1585 __ ldr(R2, FieldAddress(R0, String::length_offset())); | |
1586 __ cmp(R1, Operand(R2)); | |
1587 __ b(&fall_through, CS); // Runtime throws exception. | |
1588 __ CompareClassId(R0, kOneByteStringCid, R3); | |
1589 __ b(&try_two_byte_string, NE); | |
1590 __ SmiUntag(R1); | |
1591 __ AddImmediate(R0, OneByteString::data_offset() - kHeapObjectTag); | |
1592 __ ldrb(R0, Address(R0, R1)); | |
1593 __ SmiTag(R0); | |
1594 __ Ret(); | |
1595 | |
1596 __ Bind(&try_two_byte_string); | |
1597 __ CompareClassId(R0, kTwoByteStringCid, R3); | |
1598 __ b(&fall_through, NE); | |
1599 ASSERT(kSmiTagShift == 1); | |
1600 __ AddImmediate(R0, TwoByteString::data_offset() - kHeapObjectTag); | |
1601 __ ldrh(R0, Address(R0, R1)); | |
1602 __ SmiTag(R0); | |
1603 __ Ret(); | |
1604 | |
1605 __ Bind(&fall_through); | |
1606 } | |
1607 | |
1608 | |
1609 void GenerateSubstringMatchesSpecialization(Assembler* assembler, | 1577 void GenerateSubstringMatchesSpecialization(Assembler* assembler, |
1610 intptr_t receiver_cid, | 1578 intptr_t receiver_cid, |
1611 intptr_t other_cid, | 1579 intptr_t other_cid, |
1612 Label* return_true, | 1580 Label* return_true, |
1613 Label* return_false) { | 1581 Label* return_false) { |
1614 __ SmiUntag(R1); | 1582 __ SmiUntag(R1); |
1615 __ ldr(R8, FieldAddress(R0, String::length_offset())); // this.length | 1583 __ ldr(R8, FieldAddress(R0, String::length_offset())); // this.length |
1616 __ SmiUntag(R8); | 1584 __ SmiUntag(R8); |
1617 __ ldr(R9, FieldAddress(R2, String::length_offset())); // other.length | 1585 __ ldr(R9, FieldAddress(R2, String::length_offset())); // other.length |
1618 __ SmiUntag(R9); | 1586 __ SmiUntag(R9); |
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2132 | 2100 |
2133 void Intrinsifier::Profiler_getCurrentTag(Assembler* assembler) { | 2101 void Intrinsifier::Profiler_getCurrentTag(Assembler* assembler) { |
2134 __ LoadIsolate(R0); | 2102 __ LoadIsolate(R0); |
2135 __ ldr(R0, Address(R0, Isolate::current_tag_offset())); | 2103 __ ldr(R0, Address(R0, Isolate::current_tag_offset())); |
2136 __ Ret(); | 2104 __ Ret(); |
2137 } | 2105 } |
2138 | 2106 |
2139 } // namespace dart | 2107 } // namespace dart |
2140 | 2108 |
2141 #endif // defined TARGET_ARCH_ARM | 2109 #endif // defined TARGET_ARCH_ARM |
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