Mercurial > hg > truffle
diff src/os_cpu/bsd_x86/vm/threadLS_bsd_x86.hpp @ 3960:f08d439fab8c
7089790: integrate bsd-port changes
Reviewed-by: kvn, twisti, jrose
Contributed-by: Kurt Miller <kurt@intricatesoftware.com>, Greg Lewis <glewis@eyesbeyond.com>, Jung-uk Kim <jkim@freebsd.org>, Christos Zoulas <christos@zoulas.com>, Landon Fuller <landonf@plausible.coop>, The FreeBSD Foundation <board@freebsdfoundation.org>, Michael Franz <mvfranz@gmail.com>, Roger Hoover <rhoover@apple.com>, Alexander Strange <astrange@apple.com>
author | never |
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date | Sun, 25 Sep 2011 16:03:29 -0700 |
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--- /dev/null Thu Jan 01 00:00:00 1970 +0000 +++ b/src/os_cpu/bsd_x86/vm/threadLS_bsd_x86.hpp Sun Sep 25 16:03:29 2011 -0700 @@ -0,0 +1,56 @@ +/* + * Copyright (c) 1999, 2010, Oracle and/or its affiliates. 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 Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA + * or visit www.oracle.com if you need additional information or have any + * questions. + * + */ + +#ifndef OS_CPU_BSD_X86_VM_THREADLS_BSD_X86_HPP +#define OS_CPU_BSD_X86_VM_THREADLS_BSD_X86_HPP + + // Processor dependent parts of ThreadLocalStorage + +#ifndef AMD64 + // map stack pointer to thread pointer - see notes in threadLS_bsd_x86.cpp + #define SP_BITLENGTH 32 +#ifndef PAGE_SHIFT + #define PAGE_SHIFT 12 + #define PAGE_SIZE (1UL << PAGE_SHIFT) +#endif + static Thread* _sp_map[1UL << (SP_BITLENGTH - PAGE_SHIFT)]; +#endif // !AMD64 + +public: + +#ifndef AMD64 + static Thread** sp_map_addr() { return _sp_map; } +#endif // !AMD64 + + static Thread* thread() { +#ifdef AMD64 + return (Thread*) os::thread_local_storage_at(thread_index()); +#else + uintptr_t sp; + __asm__ volatile ("movl %%esp, %0" : "=r" (sp)); + return _sp_map[sp >> PAGE_SHIFT]; +#endif // AMD64 + } + +#endif // OS_CPU_BSD_X86_VM_THREADLS_BSD_X86_HPP