duke@435: /*
sla@5237:  * Copyright (c) 2003, 2013, Oracle and/or its affiliates. All rights reserved.
duke@435:  * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
duke@435:  *
duke@435:  * This code is free software; you can redistribute it and/or modify it
duke@435:  * under the terms of the GNU General Public License version 2 only, as
duke@435:  * published by the Free Software Foundation.
duke@435:  *
duke@435:  * This code is distributed in the hope that it will be useful, but WITHOUT
duke@435:  * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
duke@435:  * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
duke@435:  * version 2 for more details (a copy is included in the LICENSE file that
duke@435:  * accompanied this code).
duke@435:  *
duke@435:  * You should have received a copy of the GNU General Public License version
duke@435:  * 2 along with this work; if not, write to the Free Software Foundation,
duke@435:  * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
duke@435:  *
trims@1907:  * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
trims@1907:  * or visit www.oracle.com if you need additional information or have any
trims@1907:  * questions.
duke@435:  *
duke@435:  */
duke@435: 
stefank@2314: #include "precompiled.hpp"
stefank@2314: #include "runtime/frame.inline.hpp"
stefank@4299: #include "runtime/thread.inline.hpp"
duke@435: 
duke@435: // For Forte Analyzer AsyncGetCallTrace profiling support - thread is
duke@435: // currently interrupted by SIGPROF
duke@435: bool JavaThread::pd_get_top_frame_for_signal_handler(frame* fr_addr,
duke@435:   void* ucontext, bool isInJava) {
duke@435: 
duke@435:   assert(Thread::current() == this, "caller must be current thread");
sla@5237:   return pd_get_top_frame(fr_addr, ucontext, isInJava);
sla@5237: }
sla@5237: 
sla@5237: bool JavaThread::pd_get_top_frame_for_profiling(frame* fr_addr, void* ucontext, bool isInJava) {
sla@5237:   return pd_get_top_frame(fr_addr, ucontext, isInJava);
sla@5237: }
sla@5237: 
sla@5237: bool JavaThread::pd_get_top_frame(frame* fr_addr, void* ucontext, bool isInJava) {
sla@5237: 
duke@435:   assert(this->is_Java_thread(), "must be JavaThread");
duke@435: 
duke@435:   JavaThread* jt = (JavaThread *)this;
duke@435: 
duke@435:   // If we have a last_Java_frame, then we should use it even if
duke@435:   // isInJava == true.  It should be more reliable than CONTEXT info.
kevinw@8877:   if (jt->has_last_Java_frame() && jt->frame_anchor()->walkable()) {
duke@435:     *fr_addr = jt->pd_last_frame();
duke@435:     return true;
duke@435:   }
duke@435: 
duke@435:   // At this point, we don't have a last_Java_frame, so
duke@435:   // we try to glean some information out of the CONTEXT
duke@435:   // if we were running Java code when SIGPROF came in.
duke@435:   if (isInJava) {
duke@435:     CONTEXT* uc = (CONTEXT*)ucontext;
duke@435: 
duke@435: #ifdef AMD64
duke@435:     intptr_t* ret_fp = (intptr_t*) uc->Rbp;
duke@435:     intptr_t* ret_sp = (intptr_t*) uc->Rsp;
duke@435:     ExtendedPC addr = ExtendedPC((address)uc->Rip);
duke@435: #else
duke@435:     intptr_t* ret_fp = (intptr_t*) uc->Ebp;
duke@435:     intptr_t* ret_sp = (intptr_t*) uc->Esp;
duke@435:     ExtendedPC addr = ExtendedPC((address)uc->Eip);
duke@435: #endif // AMD64
duke@435:     if (addr.pc() == NULL || ret_sp == NULL ) {
duke@435:       // CONTEXT wasn't useful
duke@435:       return false;
duke@435:     }
duke@435: 
duke@435:     frame ret_frame(ret_sp, ret_fp, addr.pc());
duke@435:     if (!ret_frame.safe_for_sender(jt)) {
duke@435: #ifdef COMPILER2
duke@435:       // C2 uses ebp as a general register see if NULL fp helps
duke@435:       frame ret_frame2(ret_sp, NULL, addr.pc());
duke@435:       if (!ret_frame2.safe_for_sender(jt)) {
duke@435:         // nothing else to try if the frame isn't good
duke@435:         return false;
duke@435:       }
duke@435:       ret_frame = ret_frame2;
duke@435: #else
duke@435:       // nothing else to try if the frame isn't good
duke@435:       return false;
duke@435: #endif /* COMPILER2 */
duke@435:     }
duke@435:     *fr_addr = ret_frame;
duke@435:     return true;
duke@435:   }
duke@435: 
duke@435:   // nothing else to try
duke@435:   return false;
duke@435: }
bobv@2036: 
bobv@2036: void JavaThread::cache_global_variables() { }