1 /*
2 * Copyright (c) 1998, 2008, 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 private:
26
27 void pd_initialize() {
28 _anchor.clear();
29 _base_of_stack_pointer = NULL;
30 }
31
32 frame pd_last_frame() {
33 assert(has_last_Java_frame(), "must have last_Java_sp() when suspended");
34 assert(_anchor.walkable(), "thread has not dumped its register windows yet");
35
36 assert(_anchor.last_Java_pc() != NULL, "Ack no pc!");
37 return frame(last_Java_sp(), frame::unpatchable, _anchor.last_Java_pc());
38 }
39
40 // Sometimes the trap handler needs to record both PC and NPC.
41 // This is a SPARC-specific companion to Thread::set_saved_exception_pc.
42 address _saved_exception_npc;
43
44 // In polling_page_safepoint_handler_blob(s) we have to tail call other
79 _base_of_stack_pointer = base_sp;
80 }
81
82 void record_base_of_stack_pointer() {
83 intptr_t *sp = (intptr_t *)(((intptr_t)StubRoutines::Sparc::flush_callers_register_windows_func()()));
84 intptr_t *ysp;
85 while((ysp = (intptr_t*)sp[FP->sp_offset_in_saved_window()]) != NULL) {
86 sp = (intptr_t *)((intptr_t)ysp + STACK_BIAS);
87 }
88 _base_of_stack_pointer = sp;
89 }
90
91 bool pd_get_top_frame_for_signal_handler(frame* fr_addr, void* ucontext,
92 bool isInJava);
93
94 // These routines are only used on cpu architectures that
95 // have separate register stacks (Itanium).
96 static bool register_stack_overflow() { return false; }
97 static void enable_register_stack_guard() {}
98 static void disable_register_stack_guard() {}
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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.
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_LINUX_SPARC_VM_THREAD_LINUX_SPARC_HPP
26 #define OS_CPU_LINUX_SPARC_VM_THREAD_LINUX_SPARC_HPP
27
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
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() {}
102
103 #endif // OS_CPU_LINUX_SPARC_VM_THREAD_LINUX_SPARC_HPP
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