Mercurial > hg > truffle
diff src/os_cpu/windows_x86/vm/assembler_windows_x86.cpp @ 304:dc7f315e41f7
5108146: Merge i486 and amd64 cpu directories
6459804: Want client (c1) compiler for x86_64 (amd64) for faster start-up
Reviewed-by: kvn
author | never |
---|---|
date | Wed, 27 Aug 2008 00:21:55 -0700 |
parents | src/os_cpu/windows_x86/vm/assembler_windows_x86_32.cpp@1fdb98a17101 |
children | c18cbe5936b8 |
line wrap: on
line diff
--- /dev/null Thu Jan 01 00:00:00 1970 +0000 +++ b/src/os_cpu/windows_x86/vm/assembler_windows_x86.cpp Wed Aug 27 00:21:55 2008 -0700 @@ -0,0 +1,98 @@ +/* + * Copyright 1999-2008 Sun Microsystems, Inc. All Rights Reserved. + * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. + * + * This code is free software; you can redistribute it and/or modify it + * under the terms of the GNU General Public License version 2 only, as + * published by the Free Software Foundation. + * + * This code is distributed in the hope that it will be useful, but WITHOUT + * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or + * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License + * version 2 for more details (a copy is included in the LICENSE file that + * accompanied this code). + * + * You should have received a copy of the GNU General Public License version + * 2 along with this work; if not, write to the Free Software Foundation, + * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. + * + * Please contact Sun Microsystems, Inc., 4150 Network Circle, Santa Clara, + * CA 95054 USA or visit www.sun.com if you need additional information or + * have any questions. + * + */ + +#include "incls/_precompiled.incl" +#include "incls/_assembler_windows_x86.cpp.incl" + + +void MacroAssembler::int3() { + emit_byte(0xCC); +} + +#ifndef _LP64 +// The current scheme to accelerate access to the thread +// pointer is to store the current thread in the os_exception_wrapper +// and reference the current thread from stubs and compiled code +// via the FS register. FS[0] contains a pointer to the structured +// exception block which is actually a stack address. The first time +// we call the os exception wrapper, we calculate and store the +// offset from this exception block and use that offset here. +// +// The last mechanism we used was problematic in that the +// the offset we had hard coded in the VM kept changing as Microsoft +// evolved the OS. +// +// Warning: This mechanism assumes that we only attempt to get the +// thread when we are nested below a call wrapper. +// +// movl reg, fs:[0] Get exeception pointer +// movl reg, [reg + thread_ptr_offset] Load thread +// +void MacroAssembler::get_thread(Register thread) { + // can't use ExternalAddress because it can't take NULL + AddressLiteral null(0, relocInfo::none); + + prefix(FS_segment); + movptr(thread, null); + assert(ThreadLocalStorage::get_thread_ptr_offset() != 0, + "Thread Pointer Offset has not been initialized"); + movl(thread, Address(thread, ThreadLocalStorage::get_thread_ptr_offset())); +} +#else +// call (Thread*)TlsGetValue(thread_index()); +void MacroAssembler::get_thread(Register thread) { + if (thread != rax) { + push(rax); + } + push(rdi); + push(rsi); + push(rdx); + push(rcx); + push(r8); + push(r9); + push(r10); + // XXX + mov(r10, rsp); + andq(rsp, -16); + push(r10); + push(r11); + + movl(c_rarg0, ThreadLocalStorage::thread_index()); + call(RuntimeAddress((address)TlsGetValue)); + + pop(r11); + pop(rsp); + pop(r10); + pop(r9); + pop(r8); + pop(rcx); + pop(rdx); + pop(rsi); + pop(rdi); + if (thread != rax) { + mov(thread, rax); + pop(rax); + } +} +#endif