| /* |
| * 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. |
| * |
| */ |
| |
| # include "incls/_precompiled.incl" |
| # include "incls/_vm_version_sparc.cpp.incl" |
| |
| int VM_Version::_features = VM_Version::unknown_m; |
| const char* VM_Version::_features_str = ""; |
| |
| void VM_Version::initialize() { |
| _features = determine_features(); |
| PrefetchCopyIntervalInBytes = prefetch_copy_interval_in_bytes(); |
| PrefetchScanIntervalInBytes = prefetch_scan_interval_in_bytes(); |
| PrefetchFieldsAhead = prefetch_fields_ahead(); |
| |
| // Allocation prefetch settings |
| intx cache_line_size = L1_data_cache_line_size(); |
| if( cache_line_size > AllocatePrefetchStepSize ) |
| AllocatePrefetchStepSize = cache_line_size; |
| if( FLAG_IS_DEFAULT(AllocatePrefetchLines) ) |
| AllocatePrefetchLines = 3; // Optimistic value |
| assert( AllocatePrefetchLines > 0, "invalid value"); |
| if( AllocatePrefetchLines < 1 ) // set valid value in product VM |
| AllocatePrefetchLines = 1; // Conservative value |
| |
| AllocatePrefetchDistance = allocate_prefetch_distance(); |
| AllocatePrefetchStyle = allocate_prefetch_style(); |
| |
| assert(AllocatePrefetchDistance % AllocatePrefetchStepSize == 0, "invalid value"); |
| |
| UseSSE = 0; // Only on x86 and x64 |
| |
| _supports_cx8 = has_v9(); |
| |
| if (is_niagara1()) { |
| // Indirect branch is the same cost as direct |
| if (FLAG_IS_DEFAULT(UseInlineCaches)) { |
| UseInlineCaches = false; |
| } |
| #ifdef COMPILER2 |
| // Indirect branch is the same cost as direct |
| if (FLAG_IS_DEFAULT(UseJumpTables)) { |
| UseJumpTables = true; |
| } |
| // Single-issue, so entry and loop tops are |
| // aligned on a single instruction boundary |
| if (FLAG_IS_DEFAULT(InteriorEntryAlignment)) { |
| InteriorEntryAlignment = 4; |
| } |
| if (FLAG_IS_DEFAULT(OptoLoopAlignment)) { |
| OptoLoopAlignment = 4; |
| } |
| #endif |
| } |
| |
| char buf[512]; |
| jio_snprintf(buf, sizeof(buf), "%s%s%s%s%s%s%s%s%s", |
| (has_v8() ? ", has_v8" : ""), |
| (has_v9() ? ", has_v9" : ""), |
| (has_vis1() ? ", has_vis1" : ""), |
| (has_vis2() ? ", has_vis2" : ""), |
| (is_ultra3() ? ", is_ultra3" : ""), |
| (is_sun4v() ? ", is_sun4v" : ""), |
| (is_niagara1() ? ", is_niagara1" : ""), |
| (!has_hardware_int_muldiv() ? ", no-muldiv" : ""), |
| (!has_hardware_fsmuld() ? ", no-fsmuld" : "")); |
| |
| // buf is started with ", " or is empty |
| _features_str = strdup(strlen(buf) > 2 ? buf + 2 : buf); |
| |
| #ifndef PRODUCT |
| if (PrintMiscellaneous && Verbose) { |
| tty->print("Allocation: "); |
| if (AllocatePrefetchStyle <= 0) { |
| tty->print_cr("no prefetching"); |
| } else { |
| if (AllocatePrefetchLines > 1) { |
| tty->print_cr("PREFETCH %d, %d lines of size %d bytes", AllocatePrefetchDistance, AllocatePrefetchLines, AllocatePrefetchStepSize); |
| } else { |
| tty->print_cr("PREFETCH %d, one line", AllocatePrefetchDistance); |
| } |
| } |
| if (PrefetchCopyIntervalInBytes > 0) { |
| tty->print_cr("PrefetchCopyIntervalInBytes %d", PrefetchCopyIntervalInBytes); |
| } |
| if (PrefetchScanIntervalInBytes > 0) { |
| tty->print_cr("PrefetchScanIntervalInBytes %d", PrefetchScanIntervalInBytes); |
| } |
| if (PrefetchFieldsAhead > 0) { |
| tty->print_cr("PrefetchFieldsAhead %d", PrefetchFieldsAhead); |
| } |
| } |
| #endif // PRODUCT |
| } |
| |
| void VM_Version::print_features() { |
| tty->print_cr("Version:%s", cpu_features()); |
| } |
| |
| int VM_Version::determine_features() { |
| if (UseV8InstrsOnly) { |
| NOT_PRODUCT(if (PrintMiscellaneous && Verbose) tty->print_cr("Version is Forced-V8");) |
| return generic_v8_m; |
| } |
| |
| int features = platform_features(unknown_m); // platform_features() is os_arch specific |
| |
| if (features == unknown_m) { |
| features = generic_v9_m; |
| warning("Cannot recognize SPARC version. Default to V9"); |
| } |
| |
| if (UseNiagaraInstrs) { |
| if (is_niagara1(features)) { |
| // Happy to accomodate... |
| } else { |
| NOT_PRODUCT(if (PrintMiscellaneous && Verbose) tty->print_cr("Version is Forced-Niagara");) |
| features = niagara1_m; |
| } |
| } else { |
| if (is_niagara1(features) && !FLAG_IS_DEFAULT(UseNiagaraInstrs)) { |
| NOT_PRODUCT(if (PrintMiscellaneous && Verbose) tty->print_cr("Version is Forced-Not-Niagara");) |
| features &= ~niagara1_unique_m; |
| } else { |
| // Happy to accomodate... |
| } |
| } |
| |
| return features; |
| } |
| |
| static int saved_features = 0; |
| |
| void VM_Version::allow_all() { |
| saved_features = _features; |
| _features = all_features_m; |
| } |
| |
| void VM_Version::revert() { |
| _features = saved_features; |
| } |