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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 // 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 |
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766 | 766 |
767 // Load the number from object into double_dst in the double format. | 767 // Load the number from object into double_dst in the double format. |
768 // Control will jump to not_int32 if the value cannot be exactly represented | 768 // Control will jump to not_int32 if the value cannot be exactly represented |
769 // by a 32-bit integer. | 769 // by a 32-bit integer. |
770 // Floating point value in the 32-bit integer range that are not exact integer | 770 // Floating point value in the 32-bit integer range that are not exact integer |
771 // won't be loaded. | 771 // won't be loaded. |
772 static void LoadNumberAsInt32Double(MacroAssembler* masm, | 772 static void LoadNumberAsInt32Double(MacroAssembler* masm, |
773 Register object, | 773 Register object, |
774 Destination destination, | 774 Destination destination, |
775 DwVfpRegister double_dst, | 775 DwVfpRegister double_dst, |
| 776 DwVfpRegister double_scratch, |
776 Register dst1, | 777 Register dst1, |
777 Register dst2, | 778 Register dst2, |
778 Register heap_number_map, | 779 Register heap_number_map, |
779 Register scratch1, | 780 Register scratch1, |
780 Register scratch2, | 781 Register scratch2, |
781 SwVfpRegister single_scratch, | 782 SwVfpRegister single_scratch, |
782 Label* not_int32); | 783 Label* not_int32); |
783 | 784 |
784 // Loads the number from object into dst as a 32-bit integer. | 785 // Loads the number from object into dst as a 32-bit integer. |
785 // Control will jump to not_int32 if the object cannot be exactly represented | 786 // Control will jump to not_int32 if the object cannot be exactly represented |
786 // by a 32-bit integer. | 787 // by a 32-bit integer. |
787 // Floating point value in the 32-bit integer range that are not exact integer | 788 // Floating point value in the 32-bit integer range that are not exact integer |
788 // won't be converted. | 789 // won't be converted. |
789 // scratch3 is not used when VFP3 is supported. | 790 // scratch3 is not used when VFP3 is supported. |
790 static void LoadNumberAsInt32(MacroAssembler* masm, | 791 static void LoadNumberAsInt32(MacroAssembler* masm, |
791 Register object, | 792 Register object, |
792 Register dst, | 793 Register dst, |
793 Register heap_number_map, | 794 Register heap_number_map, |
794 Register scratch1, | 795 Register scratch1, |
795 Register scratch2, | 796 Register scratch2, |
796 Register scratch3, | 797 Register scratch3, |
797 DwVfpRegister double_scratch, | 798 DwVfpRegister double_scratch0, |
| 799 DwVfpRegister double_scratch1, |
798 Label* not_int32); | 800 Label* not_int32); |
799 | 801 |
800 // Generate non VFP3 code to check if a double can be exactly represented by a | 802 // Generate non VFP3 code to check if a double can be exactly represented by a |
801 // 32-bit integer. This does not check for 0 or -0, which need | 803 // 32-bit integer. This does not check for 0 or -0, which need |
802 // to be checked for separately. | 804 // to be checked for separately. |
803 // Control jumps to not_int32 if the value is not a 32-bit integer, and falls | 805 // Control jumps to not_int32 if the value is not a 32-bit integer, and falls |
804 // through otherwise. | 806 // through otherwise. |
805 // src1 and src2 will be cloberred. | 807 // src1 and src2 will be cloberred. |
806 // | 808 // |
807 // Expected input: | 809 // Expected input: |
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894 | 896 |
895 class LookupModeBits: public BitField<LookupMode, 0, 1> {}; | 897 class LookupModeBits: public BitField<LookupMode, 0, 1> {}; |
896 | 898 |
897 LookupMode mode_; | 899 LookupMode mode_; |
898 }; | 900 }; |
899 | 901 |
900 | 902 |
901 } } // namespace v8::internal | 903 } } // namespace v8::internal |
902 | 904 |
903 #endif // V8_ARM_CODE_STUBS_ARM_H_ | 905 #endif // V8_ARM_CODE_STUBS_ARM_H_ |
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