Mercurial > hg > truffle
annotate src/os_cpu/linux_sparc/vm/thread_linux_sparc.hpp @ 18003:dda2ae6f9557
8046542: [I.finalize() calls from methods compiled by C1 do not cause IllegalAccessError on Sparc
Summary: call to Object.finalize() sometimes allowed by compilers on array type
Reviewed-by: iveresov, vlivanov
author | roland |
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date | Wed, 02 Jul 2014 22:54:18 +0200 |
parents | f95d63e2154a |
children |
rev | line source |
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133 | 1 /* |
1972 | 2 * Copyright (c) 1998, 2010, Oracle and/or its affiliates. All rights reserved. |
133 | 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 * | |
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19 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA |
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20 * or visit www.oracle.com if you need additional information or have any |
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21 * questions. |
133 | 22 * |
23 */ | |
24 | |
1972 | 25 #ifndef OS_CPU_LINUX_SPARC_VM_THREAD_LINUX_SPARC_HPP |
26 #define OS_CPU_LINUX_SPARC_VM_THREAD_LINUX_SPARC_HPP | |
27 | |
133 | 28 private: |
29 | |
30 void pd_initialize() { | |
31 _anchor.clear(); | |
32 _base_of_stack_pointer = NULL; | |
33 } | |
34 | |
35 frame pd_last_frame() { | |
36 assert(has_last_Java_frame(), "must have last_Java_sp() when suspended"); | |
37 assert(_anchor.walkable(), "thread has not dumped its register windows yet"); | |
38 | |
39 assert(_anchor.last_Java_pc() != NULL, "Ack no pc!"); | |
40 return frame(last_Java_sp(), frame::unpatchable, _anchor.last_Java_pc()); | |
41 } | |
42 | |
43 // Sometimes the trap handler needs to record both PC and NPC. | |
44 // This is a SPARC-specific companion to Thread::set_saved_exception_pc. | |
45 address _saved_exception_npc; | |
46 | |
47 // In polling_page_safepoint_handler_blob(s) we have to tail call other | |
48 // blobs without blowing any registers. A tail call requires some | |
49 // register to jump with and we can't blow any registers, so it must | |
50 // be restored in the delay slot. 'restore' cannot be used as it | |
51 // will chop the heads off of 64-bit %o registers in the 32-bit | |
52 // build. Instead we reload the registers using G2_thread and this | |
53 // location. Must be 64bits in the 32-bit LION build. | |
54 jdouble _o_reg_temps[6]; | |
55 | |
56 // a stack pointer older than any java frame stack pointer. It is | |
57 // used to validate stack pointers in frame::next_younger_sp (it | |
58 // provides the upper bound in the range check). This is necessary | |
59 // on Solaris/SPARC since the ucontext passed to a signal handler is | |
60 // sometimes corrupt and we need a way to check the extracted sp. | |
61 intptr_t* _base_of_stack_pointer; | |
62 | |
63 public: | |
64 | |
65 static int o_reg_temps_offset_in_bytes() { return offset_of(JavaThread, _o_reg_temps); } | |
66 | |
67 #ifndef _LP64 | |
68 address o_reg_temps(int i) { return (address)&_o_reg_temps[i]; } | |
69 #endif | |
70 | |
71 static int saved_exception_npc_offset_in_bytes() { return offset_of(JavaThread,_saved_exception_npc); } | |
72 | |
73 address saved_exception_npc() { return _saved_exception_npc; } | |
74 void set_saved_exception_npc(address a) { _saved_exception_npc = a; } | |
75 | |
76 | |
77 public: | |
78 | |
79 intptr_t* base_of_stack_pointer() { return _base_of_stack_pointer; } | |
80 | |
81 void set_base_of_stack_pointer(intptr_t* base_sp) { | |
82 _base_of_stack_pointer = base_sp; | |
83 } | |
84 | |
85 void record_base_of_stack_pointer() { | |
86 intptr_t *sp = (intptr_t *)(((intptr_t)StubRoutines::Sparc::flush_callers_register_windows_func()())); | |
87 intptr_t *ysp; | |
88 while((ysp = (intptr_t*)sp[FP->sp_offset_in_saved_window()]) != NULL) { | |
89 sp = (intptr_t *)((intptr_t)ysp + STACK_BIAS); | |
90 } | |
91 _base_of_stack_pointer = sp; | |
92 } | |
93 | |
94 bool pd_get_top_frame_for_signal_handler(frame* fr_addr, void* ucontext, | |
95 bool isInJava); | |
96 | |
97 // These routines are only used on cpu architectures that | |
98 // have separate register stacks (Itanium). | |
99 static bool register_stack_overflow() { return false; } | |
100 static void enable_register_stack_guard() {} | |
101 static void disable_register_stack_guard() {} | |
1972 | 102 |
103 #endif // OS_CPU_LINUX_SPARC_VM_THREAD_LINUX_SPARC_HPP |