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src/cpu/x86/vm/stubRoutines_x86_32.hpp@76c1d7d13ec5 (annotated)

src/cpu/x86/vm/stubRoutines_x86_32.hpp

Thu, 18 Mar 2010 09:56:51 +0100

author

twisti

date

Thu, 18 Mar 2010 09:56:51 +0100

changeset 1739

76c1d7d13ec5

parent 1734

9eba43136cb5

child 1907

c18cbe5936b8

permissions

-rw-r--r--

6932091: JSR 292 x86 code cleanup
Summary: Some code cleanups found during the JSR 292 SPARC port.
Reviewed-by: kvn, never

duke@435	1	/*
twisti@1734	2	* Copyright 1997-2010 Sun Microsystems, Inc. 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	*
duke@435	19	* Please contact Sun Microsystems, Inc., 4150 Network Circle, Santa Clara,
duke@435	20	* CA 95054 USA or visit www.sun.com if you need additional information or
duke@435	21	* have any questions.
duke@435	22	*
duke@435	23	*/
duke@435	24
duke@435	25	// This file holds the platform specific parts of the StubRoutines
duke@435	26	// definition. See stubRoutines.hpp for a description on how to
duke@435	27	// extend it.
duke@435	28
duke@435	29	enum platform_dependent_constants {
duke@435	30	code_size1 = 9000, // simply increase if too small (assembler will crash if too small)
duke@435	31	code_size2 = 22000 // simply increase if too small (assembler will crash if too small)
duke@435	32	};
duke@435	33
twisti@1734	34	// MethodHandles adapters
twisti@1734	35	enum method_handles_platform_dependent_constants {
twisti@1734	36	method_handles_adapters_code_size = 5000
twisti@1734	37	};
twisti@1734	38
never@739	39	class x86 {
duke@435	40	friend class StubGenerator;
duke@435	41	friend class VMStructs;
duke@435	42
duke@435	43	private:
duke@435	44	// If we call compiled code directly from the call stub we will
duke@435	45	// need to adjust the return back to the call stub to a specialized
duke@435	46	// piece of code that can handle compiled results and cleaning the fpu
duke@435	47	// stack. The variable holds that location.
duke@435	48	static address _call_stub_compiled_return;
duke@435	49	static address _verify_mxcsr_entry;
duke@435	50	static address _verify_fpu_cntrl_wrd_entry;
duke@435	51	static jint _mxcsr_std;
duke@435	52
duke@435	53	public:
duke@435	54	static address verify_mxcsr_entry() { return _verify_mxcsr_entry; }
duke@435	55	static address verify_fpu_cntrl_wrd_entry() { return _verify_fpu_cntrl_wrd_entry; }
duke@435	56
duke@435	57	static address get_call_stub_compiled_return() { return _call_stub_compiled_return; }
duke@435	58	static void set_call_stub_compiled_return(address ret) { _call_stub_compiled_return = ret; }
duke@435	59	};
duke@435	60
duke@435	61	static bool returns_to_call_stub(address return_pc) { return (return_pc == _call_stub_return_address) ||
never@739	62	return_pc == x86::get_call_stub_compiled_return(); }