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src/cpu/sparc/vm/c1_MacroAssembler_sparc.hpp@660978a2a31a (annotated)

src/cpu/sparc/vm/c1_MacroAssembler_sparc.hpp

Thu, 12 Mar 2009 10:37:46 -0700

author

kvn

date

Thu, 12 Mar 2009 10:37:46 -0700

changeset 1077

660978a2a31a

parent 435

a61af66fc99e

child 1907

c18cbe5936b8

permissions

-rw-r--r--

6791178: Specialize for zero as the compressed oop vm heap base
Summary: Use zero based compressed oops if java heap is below 32gb and unscaled compressed oops if java heap is below 4gb.
Reviewed-by: never, twisti, jcoomes, coleenp

duke@435	1	/*
duke@435	2	* Copyright 1999-2005 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	void pd_init() { /* nothing to do */ }
duke@435	26
duke@435	27	public:
duke@435	28	void try_allocate(
duke@435	29	Register obj, // result: pointer to object after successful allocation
duke@435	30	Register var_size_in_bytes, // object size in bytes if unknown at compile time; invalid otherwise
duke@435	31	int con_size_in_bytes, // object size in bytes if known at compile time
duke@435	32	Register t1, // temp register
duke@435	33	Register t2, // temp register
duke@435	34	Label& slow_case // continuation point if fast allocation fails
duke@435	35	);
duke@435	36
duke@435	37	void initialize_header(Register obj, Register klass, Register len, Register t1, Register t2);
duke@435	38	void initialize_body(Register base, Register index);
duke@435	39
duke@435	40	// locking/unlocking
duke@435	41	void lock_object (Register Rmark, Register Roop, Register Rbox, Register Rscratch, Label& slow_case);
duke@435	42	void unlock_object(Register Rmark, Register Roop, Register Rbox, Label& slow_case);
duke@435	43
duke@435	44	void initialize_object(
duke@435	45	Register obj, // result: pointer to object after successful allocation
duke@435	46	Register klass, // object klass
duke@435	47	Register var_size_in_bytes, // object size in bytes if unknown at compile time; invalid otherwise
duke@435	48	int con_size_in_bytes, // object size in bytes if known at compile time
duke@435	49	Register t1, // temp register
duke@435	50	Register t2 // temp register
duke@435	51	);
duke@435	52
duke@435	53	// allocation of fixed-size objects
duke@435	54	// (can also be used to allocate fixed-size arrays, by setting
duke@435	55	// hdr_size correctly and storing the array length afterwards)
duke@435	56	void allocate_object(
duke@435	57	Register obj, // result: pointer to object after successful allocation
duke@435	58	Register t1, // temp register
duke@435	59	Register t2, // temp register
duke@435	60	Register t3, // temp register
duke@435	61	int hdr_size, // object header size in words
duke@435	62	int obj_size, // object size in words
duke@435	63	Register klass, // object klass
duke@435	64	Label& slow_case // continuation point if fast allocation fails
duke@435	65	);
duke@435	66
duke@435	67	enum {
duke@435	68	max_array_allocation_length = 0x01000000 // sparc friendly value, requires sethi only
duke@435	69	};
duke@435	70
duke@435	71	// allocation of arrays
duke@435	72	void allocate_array(
duke@435	73	Register obj, // result: pointer to array after successful allocation
duke@435	74	Register len, // array length
duke@435	75	Register t1, // temp register
duke@435	76	Register t2, // temp register
duke@435	77	Register t3, // temp register
duke@435	78	int hdr_size, // object header size in words
duke@435	79	int elt_size, // element size in bytes
duke@435	80	Register klass, // object klass
duke@435	81	Label& slow_case // continuation point if fast allocation fails
duke@435	82	);
duke@435	83
duke@435	84	// invalidates registers in this window
duke@435	85	void invalidate_registers(bool iregisters, bool lregisters, bool oregisters,
duke@435	86	Register preserve1 = noreg, Register preserve2 = noreg);