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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_MIPS. | 5 #include "vm/globals.h" // Needed here to get TARGET_ARCH_MIPS. |
6 #if defined(TARGET_ARCH_MIPS) | 6 #if defined(TARGET_ARCH_MIPS) |
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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1463 FieldAddress(V0, Double::value_offset() + kWordSize)); | 1463 FieldAddress(V0, Double::value_offset() + kWordSize)); |
1464 __ Bind(&fall_through); | 1464 __ Bind(&fall_through); |
1465 } | 1465 } |
1466 | 1466 |
1467 | 1467 |
1468 void Intrinsifier::DoubleFromInteger(Assembler* assembler) { | 1468 void Intrinsifier::DoubleFromInteger(Assembler* assembler) { |
1469 Label fall_through; | 1469 Label fall_through; |
1470 | 1470 |
1471 __ lw(T0, Address(SP, 0 * kWordSize)); | 1471 __ lw(T0, Address(SP, 0 * kWordSize)); |
1472 __ andi(CMPRES1, T0, Immediate(kSmiTagMask)); | 1472 __ andi(CMPRES1, T0, Immediate(kSmiTagMask)); |
1473 __ bne(T0, ZR, &fall_through); | 1473 __ bne(CMPRES1, ZR, &fall_through); |
1474 | 1474 |
1475 // Is Smi. | 1475 // Is Smi. |
1476 __ SmiUntag(T0); | 1476 __ SmiUntag(T0); |
1477 __ mtc1(T0, F4); | 1477 __ mtc1(T0, F4); |
1478 __ cvtdw(D0, F4); | 1478 __ cvtdw(D0, F4); |
1479 const Class& double_class = Class::Handle( | 1479 const Class& double_class = Class::Handle( |
1480 Isolate::Current()->object_store()->double_class()); | 1480 Isolate::Current()->object_store()->double_class()); |
1481 __ TryAllocate(double_class, &fall_through, V0, T1); // Result register. | 1481 __ TryAllocate(double_class, &fall_through, V0, T1); // Result register. |
1482 __ swc1(F0, FieldAddress(V0, Double::value_offset())); | 1482 __ swc1(F0, FieldAddress(V0, Double::value_offset())); |
1483 __ Ret(); | 1483 __ Ret(); |
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1674 | 1674 |
1675 | 1675 |
1676 void Intrinsifier::StringBaseCodeUnitAt(Assembler* assembler) { | 1676 void Intrinsifier::StringBaseCodeUnitAt(Assembler* assembler) { |
1677 Label fall_through, try_two_byte_string; | 1677 Label fall_through, try_two_byte_string; |
1678 | 1678 |
1679 __ lw(T1, Address(SP, 0 * kWordSize)); // Index. | 1679 __ lw(T1, Address(SP, 0 * kWordSize)); // Index. |
1680 __ lw(T0, Address(SP, 1 * kWordSize)); // String. | 1680 __ lw(T0, Address(SP, 1 * kWordSize)); // String. |
1681 | 1681 |
1682 // Checks. | 1682 // Checks. |
1683 __ andi(CMPRES1, T1, Immediate(kSmiTagMask)); | 1683 __ andi(CMPRES1, T1, Immediate(kSmiTagMask)); |
1684 __ bne(T1, ZR, &fall_through); // Index is not a Smi. | 1684 __ bne(CMPRES1, ZR, &fall_through); // Index is not a Smi. |
1685 __ lw(T2, FieldAddress(T0, String::length_offset())); // Range check. | 1685 __ lw(T2, FieldAddress(T0, String::length_offset())); // Range check. |
1686 // Runtime throws exception. | 1686 // Runtime throws exception. |
1687 __ BranchUnsignedGreaterEqual(T1, T2, &fall_through); | 1687 __ BranchUnsignedGreaterEqual(T1, T2, &fall_through); |
1688 __ LoadClassId(CMPRES1, T0); // Class ID check. | 1688 __ LoadClassId(CMPRES1, T0); // Class ID check. |
1689 __ BranchNotEqual( | 1689 __ BranchNotEqual( |
1690 CMPRES1, Immediate(kOneByteStringCid), &try_two_byte_string); | 1690 CMPRES1, Immediate(kOneByteStringCid), &try_two_byte_string); |
1691 | 1691 |
1692 // Grab byte and return. | 1692 // Grab byte and return. |
1693 __ SmiUntag(T1); | 1693 __ SmiUntag(T1); |
1694 __ addu(T2, T0, T1); | 1694 __ addu(T2, T0, T1); |
1695 __ lbu(V0, FieldAddress(T2, OneByteString::data_offset())); | 1695 __ lbu(V0, FieldAddress(T2, OneByteString::data_offset())); |
1696 __ Ret(); | 1696 __ Ret(); |
1697 __ delay_slot()->SmiTag(V0); | 1697 __ delay_slot()->SmiTag(V0); |
1698 | 1698 |
1699 __ Bind(&try_two_byte_string); | 1699 __ Bind(&try_two_byte_string); |
1700 __ BranchNotEqual(CMPRES1, Immediate(kTwoByteStringCid), &fall_through); | 1700 __ BranchNotEqual(CMPRES1, Immediate(kTwoByteStringCid), &fall_through); |
1701 ASSERT(kSmiTagShift == 1); | 1701 ASSERT(kSmiTagShift == 1); |
1702 __ addu(T2, T0, T1); | 1702 __ addu(T2, T0, T1); |
1703 __ lhu(V0, FieldAddress(T2, TwoByteString::data_offset())); | 1703 __ lhu(V0, FieldAddress(T2, TwoByteString::data_offset())); |
1704 __ Ret(); | 1704 __ Ret(); |
1705 __ delay_slot()->SmiTag(V0); | 1705 __ delay_slot()->SmiTag(V0); |
1706 | 1706 |
1707 __ Bind(&fall_through); | 1707 __ Bind(&fall_through); |
1708 } | 1708 } |
1709 | 1709 |
1710 | 1710 |
| 1711 void GenerateSubstringMatchesSpecialization(Assembler* assembler, |
| 1712 intptr_t receiver_cid, |
| 1713 intptr_t other_cid, |
| 1714 Label* return_true, |
| 1715 Label* return_false) { |
| 1716 __ SmiUntag(A1); |
| 1717 __ lw(T1, FieldAddress(A0, String::length_offset())); // this.length |
| 1718 __ SmiUntag(T1); |
| 1719 __ lw(T2, FieldAddress(A2, String::length_offset())); // other.length |
| 1720 __ SmiUntag(T2); |
| 1721 |
| 1722 // if (other.length == 0) return true; |
| 1723 __ beq(T2, ZR, return_true); |
| 1724 |
| 1725 // if (start < 0) return false; |
| 1726 __ bltz(A1, return_false); |
| 1727 |
| 1728 // if (start + other.length > this.length) return false; |
| 1729 __ addu(T0, A1, T2); |
| 1730 __ BranchSignedGreater(T0, T1, return_false); |
| 1731 |
| 1732 if (receiver_cid == kOneByteStringCid) { |
| 1733 __ AddImmediate(A0, A0, OneByteString::data_offset() - kHeapObjectTag); |
| 1734 __ addu(A0, A0, A1); |
| 1735 } else { |
| 1736 ASSERT(receiver_cid == kTwoByteStringCid); |
| 1737 __ AddImmediate(A0, A0, TwoByteString::data_offset() - kHeapObjectTag); |
| 1738 __ addu(A0, A0, A1); |
| 1739 __ addu(A0, A0, A1); |
| 1740 } |
| 1741 if (other_cid == kOneByteStringCid) { |
| 1742 __ AddImmediate(A2, A2, OneByteString::data_offset() - kHeapObjectTag); |
| 1743 } else { |
| 1744 ASSERT(other_cid == kTwoByteStringCid); |
| 1745 __ AddImmediate(A2, A2, TwoByteString::data_offset() - kHeapObjectTag); |
| 1746 } |
| 1747 |
| 1748 // i = 0 |
| 1749 __ LoadImmediate(T0, 0); |
| 1750 |
| 1751 // do |
| 1752 Label loop; |
| 1753 __ Bind(&loop); |
| 1754 |
| 1755 if (receiver_cid == kOneByteStringCid) { |
| 1756 __ lbu(T3, Address(A0, 0)); // this.codeUnitAt(i + start) |
| 1757 } else { |
| 1758 __ lhu(T3, Address(A0, 0)); // this.codeUnitAt(i + start) |
| 1759 } |
| 1760 if (other_cid == kOneByteStringCid) { |
| 1761 __ lbu(T4, Address(A2, 0)); // other.codeUnitAt(i) |
| 1762 } else { |
| 1763 __ lhu(T4, Address(A2, 0)); // other.codeUnitAt(i) |
| 1764 } |
| 1765 __ bne(T3, T4, return_false); |
| 1766 |
| 1767 // i++, while (i < len) |
| 1768 __ AddImmediate(T0, T0, 1); |
| 1769 __ AddImmediate(A0, A0, receiver_cid == kOneByteStringCid ? 1 : 2); |
| 1770 __ AddImmediate(A2, A2, other_cid == kOneByteStringCid ? 1 : 2); |
| 1771 __ BranchSignedLess(T0, T2, &loop); |
| 1772 |
| 1773 __ b(return_true); |
| 1774 } |
| 1775 |
| 1776 |
| 1777 // bool _substringMatches(int start, String other) |
| 1778 // This intrinsic handles a OneByteString or TwoByteString receiver with a |
| 1779 // OneByteString other. |
| 1780 void Intrinsifier::StringBaseSubstringMatches(Assembler* assembler) { |
| 1781 Label fall_through, return_true, return_false, try_two_byte; |
| 1782 __ lw(A0, Address(SP, 2 * kWordSize)); // this |
| 1783 __ lw(A1, Address(SP, 1 * kWordSize)); // start |
| 1784 __ lw(A2, Address(SP, 0 * kWordSize)); // other |
| 1785 |
| 1786 __ andi(CMPRES1, A1, Immediate(kSmiTagMask)); |
| 1787 __ bne(CMPRES1, ZR, &fall_through); // 'start' is not a Smi. |
| 1788 |
| 1789 __ LoadClassId(CMPRES1, A2); |
| 1790 __ BranchNotEqual(CMPRES1, Immediate(kOneByteStringCid), &fall_through); |
| 1791 |
| 1792 __ LoadClassId(CMPRES1, A0); |
| 1793 __ BranchNotEqual(CMPRES1, Immediate(kOneByteStringCid), &try_two_byte); |
| 1794 |
| 1795 GenerateSubstringMatchesSpecialization(assembler, |
| 1796 kOneByteStringCid, |
| 1797 kOneByteStringCid, |
| 1798 &return_true, |
| 1799 &return_false); |
| 1800 |
| 1801 __ Bind(&try_two_byte); |
| 1802 __ LoadClassId(CMPRES1, A0); |
| 1803 __ BranchNotEqual(CMPRES1, Immediate(kTwoByteStringCid), &fall_through); |
| 1804 |
| 1805 GenerateSubstringMatchesSpecialization(assembler, |
| 1806 kTwoByteStringCid, |
| 1807 kOneByteStringCid, |
| 1808 &return_true, |
| 1809 &return_false); |
| 1810 |
| 1811 __ Bind(&return_true); |
| 1812 __ LoadObject(V0, Bool::True()); |
| 1813 __ Ret(); |
| 1814 |
| 1815 __ Bind(&return_false); |
| 1816 __ LoadObject(V0, Bool::False()); |
| 1817 __ Ret(); |
| 1818 |
| 1819 __ Bind(&fall_through); |
| 1820 } |
| 1821 |
| 1822 |
1711 void Intrinsifier::StringBaseCharAt(Assembler* assembler) { | 1823 void Intrinsifier::StringBaseCharAt(Assembler* assembler) { |
1712 Label fall_through, try_two_byte_string; | 1824 Label fall_through, try_two_byte_string; |
1713 | 1825 |
1714 __ lw(T1, Address(SP, 0 * kWordSize)); // Index. | 1826 __ lw(T1, Address(SP, 0 * kWordSize)); // Index. |
1715 __ lw(T0, Address(SP, 1 * kWordSize)); // String. | 1827 __ lw(T0, Address(SP, 1 * kWordSize)); // String. |
1716 | 1828 |
1717 // Checks. | 1829 // Checks. |
1718 __ andi(CMPRES1, T1, Immediate(kSmiTagMask)); | 1830 __ andi(CMPRES1, T1, Immediate(kSmiTagMask)); |
1719 __ bne(T1, ZR, &fall_through); // Index is not a Smi. | 1831 __ bne(CMPRES1, ZR, &fall_through); // Index is not a Smi. |
1720 __ lw(T2, FieldAddress(T0, String::length_offset())); // Range check. | 1832 __ lw(T2, FieldAddress(T0, String::length_offset())); // Range check. |
1721 // Runtime throws exception. | 1833 // Runtime throws exception. |
1722 __ BranchUnsignedGreaterEqual(T1, T2, &fall_through); | 1834 __ BranchUnsignedGreaterEqual(T1, T2, &fall_through); |
1723 __ LoadClassId(CMPRES1, T0); // Class ID check. | 1835 __ LoadClassId(CMPRES1, T0); // Class ID check. |
1724 __ BranchNotEqual( | 1836 __ BranchNotEqual( |
1725 CMPRES1, Immediate(kOneByteStringCid), &try_two_byte_string); | 1837 CMPRES1, Immediate(kOneByteStringCid), &try_two_byte_string); |
1726 | 1838 |
1727 // Grab byte and return. | 1839 // Grab byte and return. |
1728 __ SmiUntag(T1); | 1840 __ SmiUntag(T1); |
1729 __ addu(T2, T0, T1); | 1841 __ addu(T2, T0, T1); |
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2120 | 2232 |
2121 void Intrinsifier::Profiler_getCurrentTag(Assembler* assembler) { | 2233 void Intrinsifier::Profiler_getCurrentTag(Assembler* assembler) { |
2122 __ LoadIsolate(V0); | 2234 __ LoadIsolate(V0); |
2123 __ Ret(); | 2235 __ Ret(); |
2124 __ delay_slot()->lw(V0, Address(V0, Isolate::current_tag_offset())); | 2236 __ delay_slot()->lw(V0, Address(V0, Isolate::current_tag_offset())); |
2125 } | 2237 } |
2126 | 2238 |
2127 } // namespace dart | 2239 } // namespace dart |
2128 | 2240 |
2129 #endif // defined TARGET_ARCH_MIPS | 2241 #endif // defined TARGET_ARCH_MIPS |
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