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annotate src/os_cpu/windows_x86/vm/assembler_windows_x86.cpp @ 1972:f95d63e2154a
6989984: Use standard include model for Hospot
Summary: Replaced MakeDeps and the includeDB files with more standardized solutions.
Reviewed-by: coleenp, kvn, kamg
| author | stefank |
|---|---|
| date | Tue, 23 Nov 2010 13:22:55 -0800 |
| parents | c18cbe5936b8 |
| children | cd3d6a6b95d9 |
| rev | line source |
|---|---|
| 0 | 1 /* |
| 1972 | 2 * Copyright (c) 1999, 2010, 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 | |
| 1972 | 25 #include "precompiled.hpp" |
| 26 #include "asm/assembler.hpp" | |
| 27 #include "assembler_x86.inline.hpp" | |
| 28 #include "runtime/os.hpp" | |
| 29 #include "runtime/threadLocalStorage.hpp" | |
| 0 | 30 |
| 31 | |
| 32 void MacroAssembler::int3() { | |
| 33 emit_byte(0xCC); | |
| 34 } | |
| 35 | |
| 304 | 36 #ifndef _LP64 |
| 0 | 37 // The current scheme to accelerate access to the thread |
| 38 // pointer is to store the current thread in the os_exception_wrapper | |
| 39 // and reference the current thread from stubs and compiled code | |
| 40 // via the FS register. FS[0] contains a pointer to the structured | |
| 41 // exception block which is actually a stack address. The first time | |
| 42 // we call the os exception wrapper, we calculate and store the | |
| 43 // offset from this exception block and use that offset here. | |
| 44 // | |
| 45 // The last mechanism we used was problematic in that the | |
| 46 // the offset we had hard coded in the VM kept changing as Microsoft | |
| 47 // evolved the OS. | |
| 48 // | |
| 49 // Warning: This mechanism assumes that we only attempt to get the | |
| 50 // thread when we are nested below a call wrapper. | |
| 51 // | |
| 52 // movl reg, fs:[0] Get exeception pointer | |
| 53 // movl reg, [reg + thread_ptr_offset] Load thread | |
| 54 // | |
| 55 void MacroAssembler::get_thread(Register thread) { | |
| 56 // can't use ExternalAddress because it can't take NULL | |
| 57 AddressLiteral null(0, relocInfo::none); | |
| 58 | |
| 59 prefix(FS_segment); | |
| 60 movptr(thread, null); | |
| 61 assert(ThreadLocalStorage::get_thread_ptr_offset() != 0, | |
| 62 "Thread Pointer Offset has not been initialized"); | |
| 63 movl(thread, Address(thread, ThreadLocalStorage::get_thread_ptr_offset())); | |
| 64 } | |
| 304 | 65 #else |
| 66 // call (Thread*)TlsGetValue(thread_index()); | |
| 67 void MacroAssembler::get_thread(Register thread) { | |
| 68 if (thread != rax) { | |
| 69 push(rax); | |
| 70 } | |
| 71 push(rdi); | |
| 72 push(rsi); | |
| 73 push(rdx); | |
| 74 push(rcx); | |
| 75 push(r8); | |
| 76 push(r9); | |
| 77 push(r10); | |
| 78 // XXX | |
| 79 mov(r10, rsp); | |
| 80 andq(rsp, -16); | |
| 81 push(r10); | |
| 82 push(r11); | |
| 83 | |
| 84 movl(c_rarg0, ThreadLocalStorage::thread_index()); | |
| 85 call(RuntimeAddress((address)TlsGetValue)); | |
| 86 | |
| 87 pop(r11); | |
| 88 pop(rsp); | |
| 89 pop(r10); | |
| 90 pop(r9); | |
| 91 pop(r8); | |
| 92 pop(rcx); | |
| 93 pop(rdx); | |
| 94 pop(rsi); | |
| 95 pop(rdi); | |
| 96 if (thread != rax) { | |
| 97 mov(thread, rax); | |
| 98 pop(rax); | |
| 99 } | |
| 100 } | |
| 101 #endif |