Mercurial > hg > truffle
annotate src/os_cpu/solaris_x86/vm/solaris_x86_32.il @ 2114:4fc084dac61e
7009756: volatile variables could be broken throw reflection API
Summary: Use Atomic::load() and Atomic::store() to access a volatile long.
Reviewed-by: iveresov, jrose, dholmes, never
| author | kvn |
|---|---|
| date | Fri, 07 Jan 2011 10:16:57 -0800 |
| parents | c18cbe5936b8 |
| children | bb8e3b66bde6 |
| rev | line source |
|---|---|
| 0 | 1 // |
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2 // Copyright (c) 2003, 2011, Oracle and/or its affiliates. All rights reserved. |
| 0 | 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 // | |
|
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19 // Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA |
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20 // or visit www.oracle.com if you need additional information or have any |
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21 // questions. |
| 0 | 22 // |
| 23 // | |
| 24 | |
| 25 | |
| 26 // Support for u8 os::setup_fpu() | |
| 27 .inline _solaris_raw_setup_fpu,1 | |
| 28 movl 0(%esp), %eax | |
| 29 fldcw (%eax) | |
| 30 .end | |
| 31 | |
| 32 // The argument size of each inline directive is ignored by the compiler | |
| 33 // and is set to 0 for compatibility reason. | |
| 34 | |
| 35 // Get the raw thread ID from %gs:0 | |
| 36 .inline _raw_thread_id,0 | |
| 37 movl %gs:0, %eax | |
| 38 .end | |
| 39 | |
|
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40 // Get current fp |
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41 .inline _get_current_fp,0 |
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42 .volatile |
| 0 | 43 movl %ebp, %eax |
| 44 .end | |
| 45 | |
| 46 // Support for jint Atomic::add(jint inc, volatile jint* dest) | |
| 47 // An additional bool (os::is_MP()) is passed as the last argument. | |
| 48 .inline _Atomic_add,3 | |
| 49 movl 0(%esp), %eax // inc | |
| 50 movl 4(%esp), %edx // dest | |
| 51 movl %eax, %ecx | |
| 52 cmpl $0, 8(%esp) // MP test | |
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53 jne 1f |
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54 xaddl %eax, (%edx) |
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55 jmp 2f |
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56 1: lock |
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57 xaddl %eax, (%edx) |
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58 2: addl %ecx, %eax |
| 0 | 59 .end |
| 60 | |
| 61 // Support for jint Atomic::xchg(jint exchange_value, volatile jint* dest). | |
| 62 .inline _Atomic_xchg,2 | |
| 63 movl 0(%esp), %eax // exchange_value | |
| 64 movl 4(%esp), %ecx // dest | |
| 65 xchgl (%ecx), %eax | |
| 66 .end | |
| 67 | |
| 68 // Support for jint Atomic::cmpxchg(jint exchange_value, | |
| 69 // volatile jint *dest, | |
| 70 // jint compare_value) | |
| 71 // An additional bool (os::is_MP()) is passed as the last argument. | |
| 72 .inline _Atomic_cmpxchg,4 | |
| 73 movl 8(%esp), %eax // compare_value | |
| 74 movl 0(%esp), %ecx // exchange_value | |
| 75 movl 4(%esp), %edx // dest | |
| 76 cmp $0, 12(%esp) // MP test | |
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77 jne 1f |
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78 cmpxchgl %ecx, (%edx) |
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79 jmp 2f |
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80 1: lock |
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81 cmpxchgl %ecx, (%edx) |
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82 2: |
| 0 | 83 .end |
| 84 | |
| 85 // Support for jlong Atomic::cmpxchg(jlong exchange_value, | |
| 86 // volatile jlong* dest, | |
| 87 // jlong compare_value) | |
| 88 // An additional bool (os::is_MP()) is passed as the last argument. | |
| 89 .inline _Atomic_cmpxchg_long,6 | |
| 90 pushl %ebx | |
| 91 pushl %edi | |
| 92 movl 20(%esp), %eax // compare_value (low) | |
| 93 movl 24(%esp), %edx // compare_value (high) | |
| 94 movl 16(%esp), %edi // dest | |
| 95 movl 8(%esp), %ebx // exchange_value (low) | |
| 96 movl 12(%esp), %ecx // exchange_high (high) | |
| 97 cmp $0, 28(%esp) // MP test | |
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98 jne 1f |
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99 cmpxchg8b (%edi) |
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100 jmp 2f |
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101 1: lock |
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102 cmpxchg8b (%edi) |
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103 2: popl %edi |
| 0 | 104 popl %ebx |
| 105 .end | |
| 106 | |
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107 // Support for jlong Atomic::load and Atomic::store. |
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108 // void _Atomic_move_long(volatile jlong* src, volatile jlong* dst) |
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109 .inline _Atomic_move_long,2 |
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110 movl 0(%esp), %eax // src |
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111 fildll (%eax) |
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112 movl 4(%esp), %eax // dest |
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113 fistpll (%eax) |
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114 .end |
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115 |
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116 |
| 0 | 117 // Support for OrderAccess::acquire() |
| 118 .inline _OrderAccess_acquire,0 | |
| 119 movl 0(%esp), %eax | |
| 120 .end | |
| 121 | |
| 122 // Support for OrderAccess::fence() | |
| 123 .inline _OrderAccess_fence,0 | |
| 124 lock | |
| 125 addl $0, (%esp) | |
| 126 .end | |
| 127 | |
| 128 // Support for u2 Bytes::swap_u2(u2 x) | |
| 129 .inline _raw_swap_u2,1 | |
| 130 movl 0(%esp), %eax | |
| 131 xchgb %al, %ah | |
| 132 .end | |
| 133 | |
| 134 // Support for u4 Bytes::swap_u4(u4 x) | |
| 135 .inline _raw_swap_u4,1 | |
| 136 movl 0(%esp), %eax | |
| 137 bswap %eax | |
| 138 .end | |
| 139 | |
| 140 // Support for u8 Bytes::swap_u8_base(u4 x, u4 y) | |
| 141 .inline _raw_swap_u8,2 | |
| 142 movl 4(%esp), %eax // y | |
| 143 movl 0(%esp), %edx // x | |
| 144 bswap %eax | |
| 145 bswap %edx | |
| 146 .end |