Mercurial > hg > graal-jvmci-8
view src/os_cpu/linux_x86/vm/assembler_linux_x86_32.cpp @ 222:2a1a77d3458f
6718676: putback for 6604014 is incomplete
Reviewed-by: kvn, jrose
author | never |
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date | Tue, 24 Jun 2008 16:00:14 -0700 |
parents | 7793bd37a336 |
children | d1605aabd0a1 |
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/* * Copyright 1999-2003 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_linux_x86_32.cpp.incl" void MacroAssembler::int3() { call(RuntimeAddress(CAST_FROM_FN_PTR(address, os::breakpoint))); } void MacroAssembler::get_thread(Register thread) { movl(thread, rsp); shrl(thread, PAGE_SHIFT); ExternalAddress tls_base((address)ThreadLocalStorage::sp_map_addr()); Address index(noreg, thread, Address::times_4); ArrayAddress tls(tls_base, index); movptr(thread, tls); } bool MacroAssembler::needs_explicit_null_check(intptr_t offset) { // Linux kernel guarantees that the first page is always unmapped. Don't // assume anything more than that. bool offset_in_first_page = 0 <= offset && offset < os::vm_page_size(); return !offset_in_first_page; }