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1 // Copyright 2012 the V8 project authors. All rights reserved. | 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 | 2 // Use of this source code is governed by a BSD-style license that can be |
3 // found in the LICENSE file. | 3 // found in the LICENSE file. |
4 | 4 |
| 5 #include <limits> |
| 6 |
5 #include "src/v8.h" | 7 #include "src/v8.h" |
6 | 8 |
7 #if V8_TARGET_ARCH_MIPS64 | 9 #if V8_TARGET_ARCH_MIPS64 |
8 | 10 |
9 #include "src/bootstrapper.h" | 11 #include "src/bootstrapper.h" |
10 #include "src/code-stubs.h" | 12 #include "src/code-stubs.h" |
11 #include "src/codegen.h" | 13 #include "src/codegen.h" |
12 #include "src/ic/handler-compiler.h" | 14 #include "src/ic/handler-compiler.h" |
13 #include "src/ic/ic.h" | 15 #include "src/ic/ic.h" |
14 #include "src/isolate.h" | 16 #include "src/isolate.h" |
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844 __ Move(double_scratch, 0.5); | 846 __ Move(double_scratch, 0.5); |
845 __ BranchF(USE_DELAY_SLOT, | 847 __ BranchF(USE_DELAY_SLOT, |
846 ¬_plus_half, | 848 ¬_plus_half, |
847 NULL, | 849 NULL, |
848 ne, | 850 ne, |
849 double_exponent, | 851 double_exponent, |
850 double_scratch); | 852 double_scratch); |
851 // double_scratch can be overwritten in the delay slot. | 853 // double_scratch can be overwritten in the delay slot. |
852 // Calculates square root of base. Check for the special case of | 854 // Calculates square root of base. Check for the special case of |
853 // Math.pow(-Infinity, 0.5) == Infinity (ECMA spec, 15.8.2.13). | 855 // Math.pow(-Infinity, 0.5) == Infinity (ECMA spec, 15.8.2.13). |
854 __ Move(double_scratch, static_cast<double>(-V8_INFINITY)); | 856 __ Move(double_scratch, std::numeric_limits<double>::infinity()); |
855 __ BranchF(USE_DELAY_SLOT, &done, NULL, eq, double_base, double_scratch); | 857 __ BranchF(USE_DELAY_SLOT, &done, NULL, eq, double_base, double_scratch); |
856 __ neg_d(double_result, double_scratch); | 858 __ neg_d(double_result, double_scratch); |
857 | 859 |
858 // Add +0 to convert -0 to +0. | 860 // Add +0 to convert -0 to +0. |
859 __ add_d(double_scratch, double_base, kDoubleRegZero); | 861 __ add_d(double_scratch, double_base, kDoubleRegZero); |
860 __ sqrt_d(double_result, double_scratch); | 862 __ sqrt_d(double_result, double_scratch); |
861 __ jmp(&done); | 863 __ jmp(&done); |
862 | 864 |
863 __ bind(¬_plus_half); | 865 __ bind(¬_plus_half); |
864 __ Move(double_scratch, -0.5); | 866 __ Move(double_scratch, -0.5); |
865 __ BranchF(USE_DELAY_SLOT, | 867 __ BranchF(USE_DELAY_SLOT, |
866 &call_runtime, | 868 &call_runtime, |
867 NULL, | 869 NULL, |
868 ne, | 870 ne, |
869 double_exponent, | 871 double_exponent, |
870 double_scratch); | 872 double_scratch); |
871 // double_scratch can be overwritten in the delay slot. | 873 // double_scratch can be overwritten in the delay slot. |
872 // Calculates square root of base. Check for the special case of | 874 // Calculates square root of base. Check for the special case of |
873 // Math.pow(-Infinity, -0.5) == 0 (ECMA spec, 15.8.2.13). | 875 // Math.pow(-Infinity, -0.5) == 0 (ECMA spec, 15.8.2.13). |
874 __ Move(double_scratch, static_cast<double>(-V8_INFINITY)); | 876 __ Move(double_scratch, std::numeric_limits<double>::infinity()); |
875 __ BranchF(USE_DELAY_SLOT, &done, NULL, eq, double_base, double_scratch); | 877 __ BranchF(USE_DELAY_SLOT, &done, NULL, eq, double_base, double_scratch); |
876 __ Move(double_result, kDoubleRegZero); | 878 __ Move(double_result, kDoubleRegZero); |
877 | 879 |
878 // Add +0 to convert -0 to +0. | 880 // Add +0 to convert -0 to +0. |
879 __ add_d(double_scratch, double_base, kDoubleRegZero); | 881 __ add_d(double_scratch, double_base, kDoubleRegZero); |
880 __ Move(double_result, 1.); | 882 __ Move(double_result, 1.); |
881 __ sqrt_d(double_scratch, double_scratch); | 883 __ sqrt_d(double_scratch, double_scratch); |
882 __ div_d(double_result, double_result, double_scratch); | 884 __ div_d(double_result, double_result, double_scratch); |
883 __ jmp(&done); | 885 __ jmp(&done); |
884 } | 886 } |
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5006 MemOperand(fp, 6 * kPointerSize), | 5008 MemOperand(fp, 6 * kPointerSize), |
5007 NULL); | 5009 NULL); |
5008 } | 5010 } |
5009 | 5011 |
5010 | 5012 |
5011 #undef __ | 5013 #undef __ |
5012 | 5014 |
5013 } } // namespace v8::internal | 5015 } } // namespace v8::internal |
5014 | 5016 |
5015 #endif // V8_TARGET_ARCH_MIPS64 | 5017 #endif // V8_TARGET_ARCH_MIPS64 |
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