Mercurial > hg > truffle
diff src/cpu/sparc/vm/vm_version_sparc.hpp @ 0:a61af66fc99e jdk7-b24
Initial load
author | duke |
---|---|
date | Sat, 01 Dec 2007 00:00:00 +0000 |
parents | |
children | 28372612af5e |
line wrap: on
line diff
--- /dev/null Thu Jan 01 00:00:00 1970 +0000 +++ b/src/cpu/sparc/vm/vm_version_sparc.hpp Sat Dec 01 00:00:00 2007 +0000 @@ -0,0 +1,132 @@ +/* + * Copyright 1997-2007 Sun Microsystems, Inc. All Rights Reserved. + * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. + * + * This code is free software; you can redistribute it and/or modify it + * under the terms of the GNU General Public License version 2 only, as + * published by the Free Software Foundation. + * + * This code is distributed in the hope that it will be useful, but WITHOUT + * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or + * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License + * version 2 for more details (a copy is included in the LICENSE file that + * accompanied this code). + * + * You should have received a copy of the GNU General Public License version + * 2 along with this work; if not, write to the Free Software Foundation, + * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. + * + * Please contact Sun Microsystems, Inc., 4150 Network Circle, Santa Clara, + * CA 95054 USA or visit www.sun.com if you need additional information or + * have any questions. + * + */ + +class VM_Version: public Abstract_VM_Version { +protected: + enum Feature_Flag { + v8_instructions = 0, + hardware_int_muldiv = 1, + hardware_fsmuld = 2, + v9_instructions = 3, + vis1_instructions = 4, + vis2_instructions = 5, + sun4v_instructions = 6 + }; + + enum Feature_Flag_Set { + unknown_m = 0, + all_features_m = -1, + + v8_instructions_m = 1 << v8_instructions, + hardware_int_muldiv_m = 1 << hardware_int_muldiv, + hardware_fsmuld_m = 1 << hardware_fsmuld, + v9_instructions_m = 1 << v9_instructions, + vis1_instructions_m = 1 << vis1_instructions, + vis2_instructions_m = 1 << vis2_instructions, + sun4v_m = 1 << sun4v_instructions, + + generic_v8_m = v8_instructions_m | hardware_int_muldiv_m | hardware_fsmuld_m, + generic_v9_m = generic_v8_m | v9_instructions_m | vis1_instructions_m, + ultra3_m = generic_v9_m | vis2_instructions_m, + + // Temporary until we have something more accurate + niagara1_unique_m = sun4v_m, + niagara1_m = generic_v9_m | niagara1_unique_m + }; + + static int _features; + static const char* _features_str; + + static void print_features(); + static int determine_features(); + static int platform_features(int features); + + static bool is_niagara1(int features) { return (features & niagara1_m) == niagara1_m; } + +public: + // Initialization + static void initialize(); + + // Instruction support + static bool has_v8() { return (_features & v8_instructions_m) != 0; } + static bool has_v9() { return (_features & v9_instructions_m) != 0; } + static bool has_hardware_int_muldiv() { return (_features & hardware_int_muldiv_m) != 0; } + static bool has_hardware_fsmuld() { return (_features & hardware_fsmuld_m) != 0; } + static bool has_vis1() { return (_features & vis1_instructions_m) != 0; } + static bool has_vis2() { return (_features & vis2_instructions_m) != 0; } + + static bool supports_compare_and_exchange() + { return has_v9(); } + + static bool is_ultra3() { return (_features & ultra3_m) == ultra3_m; } + static bool is_sun4v() { return (_features & sun4v_m) != 0; } + static bool is_niagara1() { return is_niagara1(_features); } + + static bool has_fast_fxtof() { return has_v9() && !is_ultra3(); } + + static const char* cpu_features() { return _features_str; } + + static intx L1_data_cache_line_size() { + return 64; // default prefetch block size on sparc + } + + // Prefetch + static intx prefetch_copy_interval_in_bytes() { + intx interval = PrefetchCopyIntervalInBytes; + return interval >= 0 ? interval : (has_v9() ? 512 : 0); + } + static intx prefetch_scan_interval_in_bytes() { + intx interval = PrefetchScanIntervalInBytes; + return interval >= 0 ? interval : (has_v9() ? 512 : 0); + } + static intx prefetch_fields_ahead() { + intx count = PrefetchFieldsAhead; + return count >= 0 ? count : (is_ultra3() ? 1 : 0); + } + + static intx allocate_prefetch_distance() { + // This method should be called before allocate_prefetch_style(). + intx count = AllocatePrefetchDistance; + if (count < 0) { // default is not defined ? + count = 512; + } + return count; + } + static intx allocate_prefetch_style() { + assert(AllocatePrefetchStyle >= 0, "AllocatePrefetchStyle should be positive"); + // Return 0 if AllocatePrefetchDistance was not defined. + return AllocatePrefetchDistance > 0 ? AllocatePrefetchStyle : 0; + } + + // Legacy + static bool v8_instructions_work() { return has_v8() && !has_v9(); } + static bool v9_instructions_work() { return has_v9(); } + + // Assembler testing + static void allow_all(); + static void revert(); + + // Override the Abstract_VM_Version implementation. + static uint page_size_count() { return is_sun4v() ? 4 : 2; } +};