/*
* Copyright ( c ) 2000 , 2020 , Oracle and / or its affiliates . All rights reserved .
* Copyright 2007 , 2008 , 2009 , 2010 Red Hat , Inc .
* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER .
*
* This code is free software ; you can redistribute it and / or modify it
* under the terms of the GNU General Public License version 2 only , as
* published by the Free Software Foundation .
*
* This code is distributed in the hope that it will be useful , but WITHOUT
* ANY WARRANTY ; without even the implied warranty of MERCHANTABILITY or
* FITNESS FOR A PARTICULAR PURPOSE . See the GNU General Public License
* version 2 for more details ( a copy is included in the LICENSE file that
* accompanied this code ) .
*
* You should have received a copy of the GNU General Public License version
* 2 along with this work ; if not , write to the Free Software Foundation ,
* Inc . , 51 Franklin St , Fifth Floor , Boston , MA 02110 - 1301 USA .
*
* Please contact Oracle , 500 Oracle Parkway , Redwood Shores , CA 94065 USA
* or visit www . oracle . com if you need additional information or have any
* questions .
*
*/
#ifndef OS_CPU_BSD_ZERO_JAVATHREAD_BSD_ZERO_HPP
#define OS_CPU_BSD_ZERO_JAVATHREAD_BSD_ZERO_HPP
private :
ZeroStack _zero_stack;
ZeroFrame* _top_zero_frame;
void pd_initialize() {
_top_zero_frame = NULL;
}
public :
ZeroStack *zero_stack() {
return &_zero_stack;
}
public :
ZeroFrame *top_zero_frame() {
return _top_zero_frame;
}
void push_zero_frame(ZeroFrame *frame) {
*(ZeroFrame **) frame = _top_zero_frame;
_top_zero_frame = frame;
}
void pop_zero_frame() {
zero_stack()->set_sp((intptr_t *) _top_zero_frame + 1 );
_top_zero_frame = *(ZeroFrame **) _top_zero_frame;
}
public :
static ByteSize zero_stack_offset() {
return byte_offset_of(JavaThread, _zero_stack);
}
static ByteSize top_zero_frame_offset() {
return byte_offset_of(JavaThread, _top_zero_frame);
}
public :
void set_last_Java_frame() {
set_last_Java_frame(top_zero_frame(), zero_stack()->sp());
}
void reset_last_Java_frame() {
frame_anchor()->zap();
}
void set_last_Java_frame(ZeroFrame* fp, intptr_t* sp) {
frame_anchor()->set(sp, NULL, fp);
}
public :
ZeroFrame* last_Java_fp() {
return frame_anchor()->last_Java_fp();
}
private :
frame pd_last_frame();
public :
static ByteSize last_Java_fp_offset() {
return byte_offset_of(JavaThread, _anchor) +
JavaFrameAnchor::last_Java_fp_offset();
}
public :
// Check for pending suspend requests and pending asynchronous
// exceptions. There are separate accessors for these, but
// _suspend_flags is volatile so using them would be unsafe.
bool has_special_condition_for_native_trans() {
return _suspend_flags != 0 ;
}
public :
bool pd_get_top_frame_for_signal_handler(frame* fr_addr,
void * ucontext,
bool isInJava) {
ShouldNotCallThis();
return false ;
}
#endif // OS_CPU_BSD_ZERO_JAVATHREAD_BSD_ZERO_HPP
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