51 Label Continue;
52 // return 0 for null reference input
53 __ cmpptr(obj_reg, NULL_WORD);
54 __ jcc(Assembler::notEqual, Continue);
55 __ xorptr(result, result);
56 __ ret(0);
57 __ bind(Continue);
58 }
59
60 __ movptr(result, Address(obj_reg, oopDesc::mark_offset_in_bytes()));
61
62 // check if locked
63 __ testptr(result, markWord::unlocked_value);
64 __ jcc(Assembler::zero, slowCase);
65
66 // get hash
67 #ifdef _LP64
68 // Read the header and build a mask to get its hash field.
69 // Depend on hash_mask being at most 32 bits and avoid the use of hash_mask_in_place
70 // because it could be larger than 32 bits in a 64-bit vm. See markWord.hpp.
71 __ shrptr(result, markWord::hash_shift);
72 __ andptr(result, markWord::hash_mask);
73 #else
74 __ andptr(result, markWord::hash_mask_in_place);
75 #endif //_LP64
76
77 // test if hashCode exists
78 __ jcc(Assembler::zero, slowCase);
79 #ifndef _LP64
80 __ shrptr(result, markWord::hash_shift);
81 #endif
82 __ ret(0);
83 __ bind(slowCase);
84 }
85 #endif //COMPILER1
86
87 JRT_LEAF(jfloat, SharedRuntime::frem(jfloat x, jfloat y))
88 assert(StubRoutines::fmod() != nullptr, "");
89 jdouble (*addr)(jdouble, jdouble) = (double (*)(double, double))StubRoutines::fmod();
90 jdouble dx = (jdouble) x;
91 jdouble dy = (jdouble) y;
92
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51 Label Continue;
52 // return 0 for null reference input
53 __ cmpptr(obj_reg, NULL_WORD);
54 __ jcc(Assembler::notEqual, Continue);
55 __ xorptr(result, result);
56 __ ret(0);
57 __ bind(Continue);
58 }
59
60 __ movptr(result, Address(obj_reg, oopDesc::mark_offset_in_bytes()));
61
62 // check if locked
63 __ testptr(result, markWord::unlocked_value);
64 __ jcc(Assembler::zero, slowCase);
65
66 // get hash
67 #ifdef _LP64
68 // Read the header and build a mask to get its hash field.
69 // Depend on hash_mask being at most 32 bits and avoid the use of hash_mask_in_place
70 // because it could be larger than 32 bits in a 64-bit vm. See markWord.hpp.
71 if (UseCompactObjectHeaders) {
72 __ shrptr(result, markWord::hash_shift_compact);
73 __ andptr(result, markWord::hash_mask_compact);
74 } else {
75 __ shrptr(result, markWord::hash_shift);
76 __ andptr(result, markWord::hash_mask);
77 }
78 #else
79 __ andptr(result, markWord::hash_mask_in_place);
80 #endif //_LP64
81
82 // test if hashCode exists
83 __ jcc(Assembler::zero, slowCase);
84 #ifndef _LP64
85 __ shrptr(result, markWord::hash_shift);
86 #endif
87 __ ret(0);
88 __ bind(slowCase);
89 }
90 #endif //COMPILER1
91
92 JRT_LEAF(jfloat, SharedRuntime::frem(jfloat x, jfloat y))
93 assert(StubRoutines::fmod() != nullptr, "");
94 jdouble (*addr)(jdouble, jdouble) = (double (*)(double, double))StubRoutines::fmod();
95 jdouble dx = (jdouble) x;
96 jdouble dy = (jdouble) y;
97
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