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src/cpu/sparc/vm/vm_version_sparc.hpp@9c2ecc2ffb12 (annotated)

src/cpu/sparc/vm/vm_version_sparc.hpp

Fri, 11 Jul 2008 01:14:44 -0700

author

trims

date

Fri, 11 Jul 2008 01:14:44 -0700

changeset 670

9c2ecc2ffb12

parent 631

d1605aabd0a1

child 1076

6af0a709d52b

permissions

-rw-r--r--

Merge

duke@435	1	/*
xdono@631	2	* Copyright 1997-2008 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	class VM_Version: public Abstract_VM_Version {
duke@435	26	protected:
duke@435	27	enum Feature_Flag {
duke@435	28	v8_instructions = 0,
duke@435	29	hardware_int_muldiv = 1,
duke@435	30	hardware_fsmuld = 2,
duke@435	31	v9_instructions = 3,
duke@435	32	vis1_instructions = 4,
duke@435	33	vis2_instructions = 5,
duke@435	34	sun4v_instructions = 6
duke@435	35	};
duke@435	36
duke@435	37	enum Feature_Flag_Set {
duke@435	38	unknown_m = 0,
duke@435	39	all_features_m = -1,
duke@435	40
duke@435	41	v8_instructions_m = 1 << v8_instructions,
duke@435	42	hardware_int_muldiv_m = 1 << hardware_int_muldiv,
duke@435	43	hardware_fsmuld_m = 1 << hardware_fsmuld,
duke@435	44	v9_instructions_m = 1 << v9_instructions,
duke@435	45	vis1_instructions_m = 1 << vis1_instructions,
duke@435	46	vis2_instructions_m = 1 << vis2_instructions,
duke@435	47	sun4v_m = 1 << sun4v_instructions,
duke@435	48
duke@435	49	generic_v8_m = v8_instructions_m | hardware_int_muldiv_m | hardware_fsmuld_m,
duke@435	50	generic_v9_m = generic_v8_m | v9_instructions_m | vis1_instructions_m,
duke@435	51	ultra3_m = generic_v9_m | vis2_instructions_m,
duke@435	52
duke@435	53	// Temporary until we have something more accurate
duke@435	54	niagara1_unique_m = sun4v_m,
duke@435	55	niagara1_m = generic_v9_m | niagara1_unique_m
duke@435	56	};
duke@435	57
duke@435	58	static int _features;
duke@435	59	static const char* _features_str;
duke@435	60
duke@435	61	static void print_features();
duke@435	62	static int determine_features();
duke@435	63	static int platform_features(int features);
duke@435	64
duke@435	65	static bool is_niagara1(int features) { return (features & niagara1_m) == niagara1_m; }
duke@435	66
jmasa@445	67	static int maximum_niagara1_processor_count() { return 32; }
jmasa@445	68	// Returns true if the platform is in the niagara line and
jmasa@445	69	// newer than the niagara1.
jmasa@445	70	static bool is_niagara1_plus();
jmasa@445	71
duke@435	72	public:
duke@435	73	// Initialization
duke@435	74	static void initialize();
duke@435	75
duke@435	76	// Instruction support
duke@435	77	static bool has_v8() { return (_features & v8_instructions_m) != 0; }
duke@435	78	static bool has_v9() { return (_features & v9_instructions_m) != 0; }
duke@435	79	static bool has_hardware_int_muldiv() { return (_features & hardware_int_muldiv_m) != 0; }
duke@435	80	static bool has_hardware_fsmuld() { return (_features & hardware_fsmuld_m) != 0; }
duke@435	81	static bool has_vis1() { return (_features & vis1_instructions_m) != 0; }
duke@435	82	static bool has_vis2() { return (_features & vis2_instructions_m) != 0; }
duke@435	83
duke@435	84	static bool supports_compare_and_exchange()
duke@435	85	{ return has_v9(); }
duke@435	86
duke@435	87	static bool is_ultra3() { return (_features & ultra3_m) == ultra3_m; }
duke@435	88	static bool is_sun4v() { return (_features & sun4v_m) != 0; }
duke@435	89	static bool is_niagara1() { return is_niagara1(_features); }
duke@435	90
duke@435	91	static bool has_fast_fxtof() { return has_v9() && !is_ultra3(); }
duke@435	92
duke@435	93	static const char* cpu_features() { return _features_str; }
duke@435	94
duke@435	95	static intx L1_data_cache_line_size() {
duke@435	96	return 64; // default prefetch block size on sparc
duke@435	97	}
duke@435	98
duke@435	99	// Prefetch
duke@435	100	static intx prefetch_copy_interval_in_bytes() {
duke@435	101	intx interval = PrefetchCopyIntervalInBytes;
duke@435	102	return interval >= 0 ? interval : (has_v9() ? 512 : 0);
duke@435	103	}
duke@435	104	static intx prefetch_scan_interval_in_bytes() {
duke@435	105	intx interval = PrefetchScanIntervalInBytes;
duke@435	106	return interval >= 0 ? interval : (has_v9() ? 512 : 0);
duke@435	107	}
duke@435	108	static intx prefetch_fields_ahead() {
duke@435	109	intx count = PrefetchFieldsAhead;
duke@435	110	return count >= 0 ? count : (is_ultra3() ? 1 : 0);
duke@435	111	}
duke@435	112
duke@435	113	static intx allocate_prefetch_distance() {
duke@435	114	// This method should be called before allocate_prefetch_style().
duke@435	115	intx count = AllocatePrefetchDistance;
duke@435	116	if (count < 0) { // default is not defined ?
duke@435	117	count = 512;
duke@435	118	}
duke@435	119	return count;
duke@435	120	}
duke@435	121	static intx allocate_prefetch_style() {
duke@435	122	assert(AllocatePrefetchStyle >= 0, "AllocatePrefetchStyle should be positive");
duke@435	123	// Return 0 if AllocatePrefetchDistance was not defined.
duke@435	124	return AllocatePrefetchDistance > 0 ? AllocatePrefetchStyle : 0;
duke@435	125	}
duke@435	126
duke@435	127	// Legacy
duke@435	128	static bool v8_instructions_work() { return has_v8() && !has_v9(); }
duke@435	129	static bool v9_instructions_work() { return has_v9(); }
duke@435	130
duke@435	131	// Assembler testing
duke@435	132	static void allow_all();
duke@435	133	static void revert();
duke@435	134
duke@435	135	// Override the Abstract_VM_Version implementation.
duke@435	136	static uint page_size_count() { return is_sun4v() ? 4 : 2; }
jmasa@445	137
jmasa@445	138	// Calculates the number of parallel threads
jmasa@445	139	static unsigned int calc_parallel_worker_threads();
duke@435	140	};