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src/cpu/sparc/vm/stubRoutines_sparc.hpp@f90c822e73f8 (annotated)

src/cpu/sparc/vm/stubRoutines_sparc.hpp

Wed, 27 Apr 2016 01:25:04 +0800

author

aoqi

date

Wed, 27 Apr 2016 01:25:04 +0800

changeset 0

f90c822e73f8

child 6876

710a3c8b516e

permissions

-rw-r--r--

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http://hg.openjdk.java.net/jdk8u/jdk8u/hotspot/
changeset: 6782:28b50d07f6f8
tag: jdk8u25-b17

aoqi@0	1	/*
aoqi@0	2	* Copyright (c) 1997, 2013, Oracle and/or its affiliates. All rights reserved.
aoqi@0	3	* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
aoqi@0	4	*
aoqi@0	5	* This code is free software; you can redistribute it and/or modify it
aoqi@0	6	* under the terms of the GNU General Public License version 2 only, as
aoqi@0	7	* published by the Free Software Foundation.
aoqi@0	8	*
aoqi@0	9	* This code is distributed in the hope that it will be useful, but WITHOUT
aoqi@0	10	* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
aoqi@0	11	* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
aoqi@0	12	* version 2 for more details (a copy is included in the LICENSE file that
aoqi@0	13	* accompanied this code).
aoqi@0	14	*
aoqi@0	15	* You should have received a copy of the GNU General Public License version
aoqi@0	16	* 2 along with this work; if not, write to the Free Software Foundation,
aoqi@0	17	* Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
aoqi@0	18	*
aoqi@0	19	* Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
aoqi@0	20	* or visit www.oracle.com if you need additional information or have any
aoqi@0	21	* questions.
aoqi@0	22	*
aoqi@0	23	*/
aoqi@0	24
aoqi@0	25	#ifndef CPU_SPARC_VM_STUBROUTINES_SPARC_HPP
aoqi@0	26	#define CPU_SPARC_VM_STUBROUTINES_SPARC_HPP
aoqi@0	27
aoqi@0	28	// This file holds the platform specific parts of the StubRoutines
aoqi@0	29	// definition. See stubRoutines.hpp for a description on how to
aoqi@0	30	// extend it.
aoqi@0	31
aoqi@0	32
aoqi@0	33	// So unfortunately c2 will call with a pc from a frame object
aoqi@0	34	// (already adjusted) and a raw pc (unadjusted), so we need to check both.
aoqi@0	35	// It didn't use to be like this before adapter removal.
aoqi@0	36	static bool returns_to_call_stub(address return_pc) {
aoqi@0	37	return ((return_pc + frame::pc_return_offset) == _call_stub_return_address) ||
aoqi@0	38	(return_pc == _call_stub_return_address );
aoqi@0	39	}
aoqi@0	40
aoqi@0	41	enum /* platform_dependent_constants */ {
aoqi@0	42	// %%%%%%%% May be able to shrink this a lot
aoqi@0	43	code_size1 = 20000, // simply increase if too small (assembler will crash if too small)
aoqi@0	44	code_size2 = 22000 // simply increase if too small (assembler will crash if too small)
aoqi@0	45	};
aoqi@0	46
aoqi@0	47	class Sparc {
aoqi@0	48	friend class StubGenerator;
aoqi@0	49
aoqi@0	50	private:
aoqi@0	51	static address _test_stop_entry;
aoqi@0	52	static address _stop_subroutine_entry;
aoqi@0	53	static address _flush_callers_register_windows_entry;
aoqi@0	54
aoqi@0	55	static address _partial_subtype_check;
aoqi@0	56
aoqi@0	57	public:
aoqi@0	58	// test assembler stop routine by setting registers
aoqi@0	59	static void (*test_stop_entry()) () { return CAST_TO_FN_PTR(void (*)(void), _test_stop_entry); }
aoqi@0	60
aoqi@0	61	// a subroutine for debugging assembler code
aoqi@0	62	static address stop_subroutine_entry_address() { return (address)&_stop_subroutine_entry; }
aoqi@0	63
aoqi@0	64	// flushes (all but current) register window
aoqi@0	65	static intptr_t* (*flush_callers_register_windows_func())() { return CAST_TO_FN_PTR(intptr_t* (*)(void), _flush_callers_register_windows_entry); }
aoqi@0	66
aoqi@0	67	static address partial_subtype_check() { return _partial_subtype_check; }
aoqi@0	68	};
aoqi@0	69
aoqi@0	70	#endif // CPU_SPARC_VM_STUBROUTINES_SPARC_HPP