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src/os_cpu/solaris_sparc/vm/thread_solaris_sparc.hpp@d2f8c38e543d (annotated)

src/os_cpu/solaris_sparc/vm/thread_solaris_sparc.hpp

Fri, 07 Dec 2012 01:09:03 -0800

author

roland

date

Fri, 07 Dec 2012 01:09:03 -0800

changeset 4325

d2f8c38e543d

parent 2314

f95d63e2154a

child 5237

f2110083203d

permissions

-rw-r--r--

Merge

duke@435	1	/*
stefank@2314	2	* Copyright (c) 1998, 2010, Oracle and/or its affiliates. All rights reserved.
duke@435	3	* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
duke@435	4	*
duke@435	5	* This code is free software; you can redistribute it and/or modify it
duke@435	6	* under the terms of the GNU General Public License version 2 only, as
duke@435	7	* published by the Free Software Foundation.
duke@435	8	*
duke@435	9	* This code is distributed in the hope that it will be useful, but WITHOUT
duke@435	10	* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
duke@435	11	* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
duke@435	12	* version 2 for more details (a copy is included in the LICENSE file that
duke@435	13	* accompanied this code).
duke@435	14	*
duke@435	15	* You should have received a copy of the GNU General Public License version
duke@435	16	* 2 along with this work; if not, write to the Free Software Foundation,
duke@435	17	* Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
duke@435	18	*
trims@1907	19	* Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
trims@1907	20	* or visit www.oracle.com if you need additional information or have any
trims@1907	21	* questions.
duke@435	22	*
duke@435	23	*/
stefank@2314	24
stefank@2314	25	#ifndef OS_CPU_SOLARIS_SPARC_VM_THREAD_SOLARIS_SPARC_HPP
stefank@2314	26	#define OS_CPU_SOLARIS_SPARC_VM_THREAD_SOLARIS_SPARC_HPP
duke@435	27	private:
duke@435	28
duke@435	29	void pd_initialize() {
duke@435	30	_anchor.clear();
duke@435	31	_base_of_stack_pointer = NULL;
duke@435	32	}
duke@435	33
duke@435	34	frame pd_last_frame() {
duke@435	35	assert(has_last_Java_frame(), "must have last_Java_sp() when suspended");
duke@435	36	assert(_anchor.walkable(), "thread has not dumped its register windows yet");
duke@435	37
duke@435	38	assert(_anchor.last_Java_pc() != NULL, "Ack no pc!");
duke@435	39	return frame(last_Java_sp(), frame::unpatchable, _anchor.last_Java_pc());
duke@435	40	}
duke@435	41
duke@435	42	// Sometimes the trap handler needs to record both PC and NPC.
duke@435	43	// This is a SPARC-specific companion to Thread::set_saved_exception_pc.
duke@435	44	address _saved_exception_npc;
duke@435	45
duke@435	46	// In polling_page_safepoint_handler_blob(s) we have to tail call other
duke@435	47	// blobs without blowing any registers. A tail call requires some
duke@435	48	// register to jump with and we can't blow any registers, so it must
duke@435	49	// be restored in the delay slot. 'restore' cannot be used as it
duke@435	50	// will chop the heads off of 64-bit %o registers in the 32-bit
duke@435	51	// build. Instead we reload the registers using G2_thread and this
duke@435	52	// location. Must be 64bits in the 32-bit LION build.
duke@435	53	jdouble _o_reg_temps[6];
duke@435	54
duke@435	55	// a stack pointer older than any java frame stack pointer. It is
duke@435	56	// used to validate stack pointers in frame::next_younger_sp (it
duke@435	57	// provides the upper bound in the range check). This is necessary
duke@435	58	// on Solaris/SPARC since the ucontext passed to a signal handler is
duke@435	59	// sometimes corrupt and we need a way to check the extracted sp.
duke@435	60	intptr_t* _base_of_stack_pointer;
duke@435	61
duke@435	62	public:
duke@435	63
duke@435	64	static int o_reg_temps_offset_in_bytes() { return offset_of(JavaThread, _o_reg_temps); }
duke@435	65
duke@435	66	#ifndef _LP64
duke@435	67	address o_reg_temps(int i) { return (address)&_o_reg_temps[i]; }
duke@435	68	#endif
duke@435	69
duke@435	70	static int saved_exception_npc_offset_in_bytes() { return offset_of(JavaThread,_saved_exception_npc); }
duke@435	71
duke@435	72	address saved_exception_npc() { return _saved_exception_npc; }
duke@435	73	void set_saved_exception_npc(address a) { _saved_exception_npc = a; }
duke@435	74
duke@435	75
duke@435	76	public:
duke@435	77
duke@435	78	intptr_t* base_of_stack_pointer() { return _base_of_stack_pointer; }
duke@435	79
duke@435	80	void set_base_of_stack_pointer(intptr_t* base_sp) {
duke@435	81	_base_of_stack_pointer = base_sp;
duke@435	82	}
duke@435	83
duke@435	84	void record_base_of_stack_pointer() {
duke@435	85	intptr_t *sp = (intptr_t *)(((intptr_t)StubRoutines::Sparc::flush_callers_register_windows_func()()));
duke@435	86	intptr_t *ysp;
duke@435	87	while((ysp = (intptr_t*)sp[FP->sp_offset_in_saved_window()]) != NULL) {
duke@435	88	sp = (intptr_t *)((intptr_t)ysp + STACK_BIAS);
duke@435	89	}
duke@435	90	_base_of_stack_pointer = sp;
duke@435	91	}
duke@435	92
duke@435	93	bool pd_get_top_frame_for_signal_handler(frame* fr_addr, void* ucontext,
duke@435	94	bool isInJava);
duke@435	95
duke@435	96	// These routines are only used on cpu architectures that
duke@435	97	// have separate register stacks (Itanium).
duke@435	98	static bool register_stack_overflow() { return false; }
duke@435	99	static void enable_register_stack_guard() {}
duke@435	100	static void disable_register_stack_guard() {}
stefank@2314	101
stefank@2314	102	#endif // OS_CPU_SOLARIS_SPARC_VM_THREAD_SOLARIS_SPARC_HPP