Mercurial > hg > graal-jvmci-8
diff src/cpu/sparc/vm/vm_version_sparc.cpp @ 0:a61af66fc99e jdk7-b24
Initial load
author | duke |
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date | Sat, 01 Dec 2007 00:00:00 +0000 |
parents | |
children | 28372612af5e |
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--- /dev/null Thu Jan 01 00:00:00 1970 +0000 +++ b/src/cpu/sparc/vm/vm_version_sparc.cpp Sat Dec 01 00:00:00 2007 +0000 @@ -0,0 +1,162 @@ +/* + * 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; +}