Thu, 16 Feb 2012 17:12:49 -0800
7145346: VerifyStackAtCalls is broken
Summary: Replace call_epilog() encoding with macroassembler use. Moved duplicated code to x86.ad. Fixed return_addr() definition.
Reviewed-by: never
1 /*
2 * Copyright (c) 1998, 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.
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19 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
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23 */
25 #ifndef OS_CPU_SOLARIS_X86_VM_THREADLS_SOLARIS_X86_HPP
26 #define OS_CPU_SOLARIS_X86_VM_THREADLS_SOLARIS_X86_HPP
28 // Processor dependent parts of ThreadLocalStorage
30 private:
31 static Thread* _get_thread_cache[]; // index by [(raw_id>>9)^(raw_id>>20) % _pd_cache_size]
32 static Thread* get_thread_via_cache_slowly(uintptr_t raw_id, int index);
34 NOT_PRODUCT(static int _tcacheHit;)
35 NOT_PRODUCT(static int _tcacheMiss;)
37 public:
38 // Cache hit/miss statistics
39 static void print_statistics() PRODUCT_RETURN;
41 enum Constants {
42 #ifdef AMD64
43 _pd_cache_size = 256*2 // projected typical # of threads * 2
44 #else
45 _pd_cache_size = 128*2 // projected typical # of threads * 2
46 #endif // AMD64
47 };
49 enum pd_tlsAccessMode {
50 pd_tlsAccessUndefined = -1,
51 pd_tlsAccessSlow = 0,
52 pd_tlsAccessIndirect = 1,
53 pd_tlsAccessDirect = 2
54 } ;
56 static void set_thread_in_slot (Thread *) ;
58 static pd_tlsAccessMode pd_getTlsAccessMode () ;
59 static ptrdiff_t pd_getTlsOffset () ;
61 static uintptr_t pd_raw_thread_id() {
62 #ifdef _GNU_SOURCE
63 #ifdef AMD64
64 uintptr_t rv;
65 __asm__ __volatile__ ("movq %%fs:0, %0" : "=r"(rv));
66 return rv;
67 #else
68 return gs_thread();
69 #endif // AMD64
70 #else //_GNU_SOURCE
71 return _raw_thread_id();
72 #endif //_GNU_SOURCE
73 }
75 static int pd_cache_index(uintptr_t raw_id) {
76 // Copied from the sparc version. Dave said it should also work fine
77 // for solx86.
78 int ix = (int) (((raw_id >> 9) ^ (raw_id >> 20)) % _pd_cache_size);
79 return ix;
80 }
82 // Java Thread
83 static inline Thread* thread();
85 #endif // OS_CPU_SOLARIS_X86_VM_THREADLS_SOLARIS_X86_HPP