1 // 2 // Copyright (c) 2004, 2012, Oracle and/or its affiliates. All rights reserved. 3 // DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. 4 // 5 // This code is free software; you can redistribute it and/or modify it 6 // under the terms of the GNU General Public License version 2 only, as 7 // published by the Free Software Foundation. 8 // 9 // This code is distributed in the hope that it will be useful, but WITHOUT 10 // ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or 11 // FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License 12 // version 2 for more details (a copy is included in the LICENSE file that 13 // accompanied this code). 14 // 15 // You should have received a copy of the GNU General Public License version 16 // 2 along with this work; if not, write to the Free Software Foundation, 17 // Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. 18 // 19 // Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA 20 // or visit www.oracle.com if you need additional information or have any 21 // questions. 22 // 23 // 24 25 // The argument size of each inline directive is ignored by the compiler 26 // and is set to the number of arguments as documentation. 27 28 // Get the raw thread ID from %gs:0 29 .inline _raw_thread_id,0 30 movq %fs:0, %rax 31 .end 32 33 // Get current sp 34 .inline _get_current_sp,0 35 .volatile 36 movq %rsp, %rax 37 .end 38 39 // Get current fp 40 .inline _get_current_fp,0 41 .volatile 42 movq %rbp, %rax 43 .end 44 45 // Support for os::rdtsc() 46 .inline _raw_rdtsc,0 47 rdtsc 48 salq $32, %rdx 49 orq %rdx, %rax 50 .end 51 52 // Support for jint Atomic::add(jint add_value, volatile jint* dest) 53 .inline _Atomic_add,2 54 movl %edi, %eax // save add_value for return 55 lock 56 xaddl %edi, (%rsi) 57 addl %edi, %eax 58 .end 59 60 // Support for jlong Atomic::add(jlong add_value, volatile jlong* dest) 61 .inline _Atomic_add_long,2 62 movq %rdi, %rax // save add_value for return 63 lock 64 xaddq %rdi, (%rsi) 65 addq %rdi, %rax 66 .end 67 68 // Support for jint Atomic::xchg(jint exchange_value, volatile jint* dest). 69 .inline _Atomic_xchg,2 70 xchgl (%rsi), %edi 71 movl %edi, %eax 72 .end 73 74 // Support for jlong Atomic::xchg(jlong exchange_value, volatile jlong* dest). 75 .inline _Atomic_xchg_long,2 76 xchgq (%rsi), %rdi 77 movq %rdi, %rax 78 .end 79 80 // Support for jint Atomic::cmpxchg(jint exchange_value, 81 // volatile jint *dest, 82 // jint compare_value) 83 .inline _Atomic_cmpxchg,3 84 movl %edx, %eax // compare_value 85 lock 86 cmpxchgl %edi, (%rsi) 87 .end 88 89 // Support for jlong Atomic::cmpxchg(jlong exchange_value, 90 // volatile jlong* dest, 91 // jlong compare_value) 92 .inline _Atomic_cmpxchg_long,3 93 movq %rdx, %rax // compare_value 94 lock 95 cmpxchgq %rdi, (%rsi) 96 .end 97 98 // Support for OrderAccess::acquire() 99 .inline _OrderAccess_acquire,0 100 movl 0(%rsp), %eax 101 .end 102 103 // Support for OrderAccess::fence() 104 .inline _OrderAccess_fence,0 105 lock 106 addl $0, (%rsp) 107 .end 108 109 // Support for u2 Bytes::swap_u2(u2 x) 110 .inline _raw_swap_u2,1 111 movw %di, %ax 112 rorw $8, %ax 113 .end 114 115 // Support for u4 Bytes::swap_u4(u4 x) 116 .inline _raw_swap_u4,1 117 movl %edi, %eax 118 bswapl %eax 119 .end 120 121 // Support for u8 Bytes::swap_u8(u8 x) 122 .inline _raw_swap_u8,1 123 movq %rdi, %rax 124 bswapq %rax 125 .end 126 127 // Support for void Prefetch::read 128 .inline _Prefetch_read,2 129 prefetcht0 (%rdi, %rsi, 1) 130 .end 131 132 // Support for void Prefetch::write 133 // We use prefetcht0 because em64t doesn't support prefetchw. 134 // prefetchw is a 3dnow instruction. 135 .inline _Prefetch_write,2 136 prefetcht0 (%rdi, %rsi, 1) 137 .end