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1 //
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2 // Copyright 2004-2007 Sun Microsystems, Inc. All Rights Reserved.
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3 // DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
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4 //
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5 // This code is free software; you can redistribute it and/or modify it
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6 // under the terms of the GNU General Public License version 2 only, as
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7 // published by the Free Software Foundation.
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8 //
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9 // This code is distributed in the hope that it will be useful, but WITHOUT
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10 // ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
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11 // FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
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12 // version 2 for more details (a copy is included in the LICENSE file that
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13 // accompanied this code).
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14 //
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15 // You should have received a copy of the GNU General Public License version
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16 // 2 along with this work; if not, write to the Free Software Foundation,
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17 // Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
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18 //
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19 // Please contact Sun Microsystems, Inc., 4150 Network Circle, Santa Clara,
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20 // CA 95054 USA or visit www.sun.com if you need additional information or
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21 // have any questions.
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22 //
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23 //
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24
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25 // The argument size of each inline directive is ignored by the compiler
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26 // and is set to the number of arguments as documentation.
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27
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28 // Get the raw thread ID from %gs:0
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29 .inline _raw_thread_id,0
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30 movq %fs:0, %rax
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31 .end
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32
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33 // Get the frame pointer from previous frame.
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34 .inline _get_previous_fp,0
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35 movq %rbp, %rax
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36 movq %rax, %rax
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37 .end
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38
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39 // Support for jint Atomic::add(jint add_value, volatile jint* dest)
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40 // An additional bool (os::is_MP()) is passed as the last argument.
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41 .inline _Atomic_add,3
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42 movl %edi, %eax // save add_value for return
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43 testl %edx, %edx // MP test
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44 je 1f
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45 lock
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46 1: xaddl %edi, (%rsi)
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47 addl %edi, %eax
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48 .end
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49
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50 // Support for jlong Atomic::add(jlong add_value, volatile jlong* dest)
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51 // An additional bool (os::is_MP()) is passed as the last argument.
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52 .inline _Atomic_add_long,3
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53 movq %rdi, %rax // save add_value for return
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54 testq %rdx, %rdx // MP test
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55 je 1f
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56 lock
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57 1: xaddq %rdi, (%rsi)
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58 addq %rdi, %rax
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59 .end
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60
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61 // Support for jint Atomic::xchg(jint exchange_value, volatile jint* dest).
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62 .inline _Atomic_xchg,2
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63 xchgl (%rsi), %edi
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64 movl %edi, %eax
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65 .end
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66
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67 // Support for jlong Atomic::xchg(jlong exchange_value, volatile jlong* dest).
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68 .inline _Atomic_xchg_long,2
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69 xchgq (%rsi), %rdi
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70 movq %rdi, %rax
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71 .end
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72
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73 // Support for jint Atomic::cmpxchg(jint exchange_value,
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74 // volatile jint *dest,
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75 // jint compare_value)
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76 // An additional bool (os::is_MP()) is passed as the last argument.
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77 .inline _Atomic_cmpxchg,4
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78 movl %edx, %eax // compare_value
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79 testl %ecx, %ecx // MP test
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80 je 1f
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81 lock
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82 1: cmpxchgl %edi, (%rsi)
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83 .end
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84
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85 // Support for jlong Atomic::cmpxchg(jlong exchange_value,
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86 // volatile jlong* dest,
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87 // jlong compare_value)
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88 // An additional bool (os::is_MP()) is passed as the last argument.
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89 .inline _Atomic_cmpxchg_long,6
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90 movq %rdx, %rax // compare_value
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91 testq %rcx, %rcx // MP test
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92 je 1f
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93 lock
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94 1: cmpxchgq %rdi, (%rsi)
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95 .end
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96
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97 // Support for OrderAccess::acquire()
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98 .inline _OrderAccess_acquire,0
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99 movl 0(%rsp), %eax
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100 .end
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101
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102 // Support for OrderAccess::fence()
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103 .inline _OrderAccess_fence,0
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104 lock
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105 addl $0, (%rsp)
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106 .end
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107
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108 // Support for u2 Bytes::swap_u2(u2 x)
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109 .inline _raw_swap_u2,1
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110 movw %di, %ax
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111 rorw $8, %ax
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112 .end
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113
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114 // Support for u4 Bytes::swap_u4(u4 x)
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115 .inline _raw_swap_u4,1
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116 movl %edi, %eax
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117 bswapl %eax
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118 .end
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119
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120 // Support for u8 Bytes::swap_u8(u8 x)
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121 .inline _raw_swap_u8,1
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122 movq %rdi, %rax
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123 bswapq %rax
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124 .end
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125
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126 // Support for void Prefetch::read
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127 .inline _Prefetch_read,2
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128 prefetcht0 (%rdi, %rsi, 1)
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129 .end
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130
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131 // Support for void Prefetch::write
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132 // We use prefetcht0 because em64t doesn't support prefetchw.
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133 // prefetchw is a 3dnow instruction.
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134 .inline _Prefetch_write,2
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135 prefetcht0 (%rdi, %rsi, 1)
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136 .end
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