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annotate src/os_cpu/linux_x86/vm/assembler_linux_x86.cpp @ 21947:9f70fc90169d

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Truffle: remove expensive assertion
author Andreas Woess <andreas.woess@oracle.com>
date Wed, 17 Jun 2015 04:09:30 +0200
parents cd3d6a6b95d9
children
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1 /*
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2 * Copyright (c) 1999, 2010, Oracle and/or its affiliates. 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 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.
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22 *
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23 */
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24
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25 #include "precompiled.hpp"
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26 #include "asm/macroAssembler.hpp"
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27 #include "asm/macroAssembler.inline.hpp"
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28 #include "runtime/os.hpp"
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29 #include "runtime/threadLocalStorage.hpp"
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30
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31 #ifndef _LP64
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32 void MacroAssembler::int3() {
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33 call(RuntimeAddress(CAST_FROM_FN_PTR(address, os::breakpoint)));
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34 }
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35
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36 #ifdef MINIMIZE_RAM_USAGE
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37
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38 void MacroAssembler::get_thread(Register thread) {
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39 // call pthread_getspecific
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40 // void * pthread_getspecific(pthread_key_t key);
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41 if (thread != rax) push(rax);
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42 push(rcx);
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43 push(rdx);
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44
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45 push(ThreadLocalStorage::thread_index());
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46 call(RuntimeAddress(CAST_FROM_FN_PTR(address, pthread_getspecific)));
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47 increment(rsp, wordSize);
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48
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49 pop(rdx);
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50 pop(rcx);
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51 if (thread != rax) {
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52 mov(thread, rax);
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53 pop(rax);
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54 }
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55 }
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56
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57 #else
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58 void MacroAssembler::get_thread(Register thread) {
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59 movl(thread, rsp);
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60 shrl(thread, PAGE_SHIFT);
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61
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62 ExternalAddress tls_base((address)ThreadLocalStorage::sp_map_addr());
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63 Address index(noreg, thread, Address::times_4);
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64 ArrayAddress tls(tls_base, index);
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65
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66 movptr(thread, tls);
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67 }
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68 #endif // MINIMIZE_RAM_USAGE
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69 #else
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70 void MacroAssembler::int3() {
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71 call(RuntimeAddress(CAST_FROM_FN_PTR(address, os::breakpoint)));
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72 }
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73
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74 void MacroAssembler::get_thread(Register thread) {
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75 // call pthread_getspecific
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76 // void * pthread_getspecific(pthread_key_t key);
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77 if (thread != rax) {
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78 push(rax);
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79 }
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80 push(rdi);
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81 push(rsi);
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82 push(rdx);
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83 push(rcx);
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84 push(r8);
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85 push(r9);
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86 push(r10);
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87 // XXX
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88 mov(r10, rsp);
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89 andq(rsp, -16);
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90 push(r10);
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91 push(r11);
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92
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93 movl(rdi, ThreadLocalStorage::thread_index());
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94 call(RuntimeAddress(CAST_FROM_FN_PTR(address, pthread_getspecific)));
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95
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96 pop(r11);
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97 pop(rsp);
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98 pop(r10);
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99 pop(r9);
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100 pop(r8);
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101 pop(rcx);
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102 pop(rdx);
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103 pop(rsi);
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104 pop(rdi);
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105 if (thread != rax) {
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106 mov(thread, rax);
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107 pop(rax);
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108 }
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109 }
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110 #endif