1 /*
2 * Copyright (c) 1999, 2013, 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 *
120 static void print_libversion_info(outputStream* st);
121
122 public:
123 static bool _stack_is_executable;
124 static void *dlopen_helper(const char *name, char *ebuf, int ebuflen);
125 static void *dll_load_in_vmthread(const char *name, char *ebuf, int ebuflen);
126
127 static void init_thread_fpu_state();
128 static int get_fpu_control_word();
129 static void set_fpu_control_word(int fpu_control);
130 static pthread_t main_thread(void) { return _main_thread; }
131 // returns kernel thread id (similar to LWP id on Solaris), which can be
132 // used to access /proc
133 static pid_t gettid();
134 static void set_createThread_lock(Mutex* lk) { _createThread_lock = lk; }
135 static Mutex* createThread_lock(void) { return _createThread_lock; }
136 static void hotspot_sigmask(Thread* thread);
137
138 static address initial_thread_stack_bottom(void) { return _initial_thread_stack_bottom; }
139 static uintptr_t initial_thread_stack_size(void) { return _initial_thread_stack_size; }
140 static bool is_initial_thread(void);
141
142 static int page_size(void) { return _page_size; }
143 static void set_page_size(int val) { _page_size = val; }
144
145 static int vm_default_page_size(void) { return _vm_default_page_size; }
146
147 static address ucontext_get_pc(ucontext_t* uc);
148 static intptr_t* ucontext_get_sp(ucontext_t* uc);
149 static intptr_t* ucontext_get_fp(ucontext_t* uc);
150
151 // For Analyzer Forte AsyncGetCallTrace profiling support:
152 //
153 // This interface should be declared in os_linux_i486.hpp, but
154 // that file provides extensions to the os class and not the
155 // Linux class.
156 static ExtendedPC fetch_frame_from_ucontext(Thread* thread, ucontext_t* uc,
157 intptr_t** ret_sp, intptr_t** ret_fp);
158
159 // This boolean allows users to forward their own non-matching signals
160 // to JVM_handle_linux_signal, harmlessly.
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1 /*
2 * Copyright (c) 1999, 2018, 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 *
120 static void print_libversion_info(outputStream* st);
121
122 public:
123 static bool _stack_is_executable;
124 static void *dlopen_helper(const char *name, char *ebuf, int ebuflen);
125 static void *dll_load_in_vmthread(const char *name, char *ebuf, int ebuflen);
126
127 static void init_thread_fpu_state();
128 static int get_fpu_control_word();
129 static void set_fpu_control_word(int fpu_control);
130 static pthread_t main_thread(void) { return _main_thread; }
131 // returns kernel thread id (similar to LWP id on Solaris), which can be
132 // used to access /proc
133 static pid_t gettid();
134 static void set_createThread_lock(Mutex* lk) { _createThread_lock = lk; }
135 static Mutex* createThread_lock(void) { return _createThread_lock; }
136 static void hotspot_sigmask(Thread* thread);
137
138 static address initial_thread_stack_bottom(void) { return _initial_thread_stack_bottom; }
139 static uintptr_t initial_thread_stack_size(void) { return _initial_thread_stack_size; }
140
141 static int page_size(void) { return _page_size; }
142 static void set_page_size(int val) { _page_size = val; }
143
144 static int vm_default_page_size(void) { return _vm_default_page_size; }
145
146 static address ucontext_get_pc(ucontext_t* uc);
147 static intptr_t* ucontext_get_sp(ucontext_t* uc);
148 static intptr_t* ucontext_get_fp(ucontext_t* uc);
149
150 // For Analyzer Forte AsyncGetCallTrace profiling support:
151 //
152 // This interface should be declared in os_linux_i486.hpp, but
153 // that file provides extensions to the os class and not the
154 // Linux class.
155 static ExtendedPC fetch_frame_from_ucontext(Thread* thread, ucontext_t* uc,
156 intptr_t** ret_sp, intptr_t** ret_fp);
157
158 // This boolean allows users to forward their own non-matching signals
159 // to JVM_handle_linux_signal, harmlessly.
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