Mercurial > hg > truffle
comparison 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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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 #ifndef OS_CPU_BSD_X86_VM_THREADLS_BSD_X86_HPP | |
26 #define OS_CPU_BSD_X86_VM_THREADLS_BSD_X86_HPP | |
27 | |
28 // Processor dependent parts of ThreadLocalStorage | |
29 | |
30 #ifndef AMD64 | |
31 // map stack pointer to thread pointer - see notes in threadLS_bsd_x86.cpp | |
32 #define SP_BITLENGTH 32 | |
33 #ifndef PAGE_SHIFT | |
34 #define PAGE_SHIFT 12 | |
35 #define PAGE_SIZE (1UL << PAGE_SHIFT) | |
36 #endif | |
37 static Thread* _sp_map[1UL << (SP_BITLENGTH - PAGE_SHIFT)]; | |
38 #endif // !AMD64 | |
39 | |
40 public: | |
41 | |
42 #ifndef AMD64 | |
43 static Thread** sp_map_addr() { return _sp_map; } | |
44 #endif // !AMD64 | |
45 | |
46 static Thread* thread() { | |
47 #ifdef AMD64 | |
48 return (Thread*) os::thread_local_storage_at(thread_index()); | |
49 #else | |
50 uintptr_t sp; | |
51 __asm__ volatile ("movl %%esp, %0" : "=r" (sp)); | |
52 return _sp_map[sp >> PAGE_SHIFT]; | |
53 #endif // AMD64 | |
54 } | |
55 | |
56 #endif // OS_CPU_BSD_X86_VM_THREADLS_BSD_X86_HPP |