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src/share/vm/runtime/javaFrameAnchor.hpp@f95d63e2154a (annotated)

src/share/vm/runtime/javaFrameAnchor.hpp

Tue, 23 Nov 2010 13:22:55 -0800

author

stefank

date

Tue, 23 Nov 2010 13:22:55 -0800

changeset 2314

f95d63e2154a

parent 2036

126ea7725993

child 2508

b92c45f2bc75

permissions

-rw-r--r--

6989984: Use standard include model for Hospot
Summary: Replaced MakeDeps and the includeDB files with more standardized solutions.
Reviewed-by: coleenp, kvn, kamg

duke@435	1	/*
stefank@2314	2	* Copyright (c) 2002, 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 SHARE_VM_RUNTIME_JAVAFRAMEANCHOR_HPP
stefank@2314	26	#define SHARE_VM_RUNTIME_JAVAFRAMEANCHOR_HPP
stefank@2314	27
stefank@2314	28	#include "utilities/globalDefinitions.hpp"
stefank@2314	29	#ifdef TARGET_OS_ARCH_linux_x86
stefank@2314	30	# include "orderAccess_linux_x86.inline.hpp"
stefank@2314	31	#endif
stefank@2314	32	#ifdef TARGET_OS_ARCH_linux_sparc
stefank@2314	33	# include "orderAccess_linux_sparc.inline.hpp"
stefank@2314	34	#endif
stefank@2314	35	#ifdef TARGET_OS_ARCH_linux_zero
stefank@2314	36	# include "orderAccess_linux_zero.inline.hpp"
stefank@2314	37	#endif
stefank@2314	38	#ifdef TARGET_OS_ARCH_solaris_x86
stefank@2314	39	# include "orderAccess_solaris_x86.inline.hpp"
stefank@2314	40	#endif
stefank@2314	41	#ifdef TARGET_OS_ARCH_solaris_sparc
stefank@2314	42	# include "orderAccess_solaris_sparc.inline.hpp"
stefank@2314	43	#endif
stefank@2314	44	#ifdef TARGET_OS_ARCH_windows_x86
stefank@2314	45	# include "orderAccess_windows_x86.inline.hpp"
stefank@2314	46	#endif
duke@435	47	//
duke@435	48	// An object for encapsulating the machine/os dependent part of a JavaThread frame state
duke@435	49	//
duke@435	50	class JavaThread;
duke@435	51
duke@435	52	class JavaFrameAnchor VALUE_OBJ_CLASS_SPEC {
duke@435	53	// Too many friends...
duke@435	54	friend class CallNativeDirectNode;
duke@435	55	friend class OptoRuntime;
duke@435	56	friend class Runtime1;
duke@435	57	friend class StubAssembler;
duke@435	58	friend class CallRuntimeDirectNode;
duke@435	59	friend class MacroAssembler;
duke@435	60	friend class InterpreterGenerator;
duke@435	61	friend class LIR_Assembler;
duke@435	62	friend class GraphKit;
duke@435	63	friend class StubGenerator;
duke@435	64	friend class JavaThread;
duke@435	65	friend class frame;
duke@435	66	friend class VMStructs;
duke@435	67	friend class BytecodeInterpreter;
duke@435	68	friend class JavaCallWrapper;
duke@435	69
duke@435	70	private:
duke@435	71	//
duke@435	72	// Whenever _last_Java_sp != NULL other anchor fields MUST be valid!
duke@435	73	// The stack may not be walkable [check with walkable() ] but the values must be valid.
duke@435	74	// The profiler apparently depends on this.
duke@435	75	//
duke@435	76	intptr_t* volatile _last_Java_sp;
duke@435	77
duke@435	78	// Whenever we call from Java to native we can not be assured that the return
duke@435	79	// address that composes the last_Java_frame will be in an accessible location
duke@435	80	// so calls from Java to native store that pc (or one good enough to locate
duke@435	81	// the oopmap) in the frame anchor. Since the frames that call from Java to
duke@435	82	// native are never deoptimized we never need to patch the pc and so this
duke@435	83	// is acceptable.
duke@435	84	volatile address _last_Java_pc;
duke@435	85
duke@435	86	// tells whether the last Java frame is set
duke@435	87	// It is important that when last_Java_sp != NULL that the rest of the frame
duke@435	88	// anchor (including platform specific) all be valid.
duke@435	89
duke@435	90	bool has_last_Java_frame() const { return _last_Java_sp != NULL; }
duke@435	91	// This is very dangerous unless sp == NULL
duke@435	92	// Invalidate the anchor so that has_last_frame is false
duke@435	93	// and no one should look at the other fields.
duke@435	94	void zap(void) { _last_Java_sp = NULL; }
duke@435	95
stefank@2314	96	#ifdef TARGET_ARCH_x86
stefank@2314	97	# include "javaFrameAnchor_x86.hpp"
stefank@2314	98	#endif
stefank@2314	99	#ifdef TARGET_ARCH_sparc
stefank@2314	100	# include "javaFrameAnchor_sparc.hpp"
stefank@2314	101	#endif
stefank@2314	102	#ifdef TARGET_ARCH_zero
stefank@2314	103	# include "javaFrameAnchor_zero.hpp"
stefank@2314	104	#endif
stefank@2314	105
duke@435	106
duke@435	107	public:
duke@435	108	JavaFrameAnchor() { clear(); }
duke@435	109	JavaFrameAnchor(JavaFrameAnchor *src) { copy(src); }
duke@435	110
duke@435	111	void set_last_Java_pc(address pc) { _last_Java_pc = pc; }
duke@435	112
duke@435	113	// Assembly stub generation helpers
duke@435	114
duke@435	115	static ByteSize last_Java_sp_offset() { return byte_offset_of(JavaFrameAnchor, _last_Java_sp); }
duke@435	116	static ByteSize last_Java_pc_offset() { return byte_offset_of(JavaFrameAnchor, _last_Java_pc); }
duke@435	117
duke@435	118	};
stefank@2314	119
stefank@2314	120	#endif // SHARE_VM_RUNTIME_JAVAFRAMEANCHOR_HPP