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