1 /* 2 * Copyright (c) 2015, Oracle and/or its affiliates. All rights reserved. 3 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. 4 * 5 * This code is free software; you can redistribute it and/or modify it 6 * under the terms of the GNU General Public License version 2 only, as 7 * published by the Free Software Foundation. 8 * 9 * This code is distributed in the hope that it will be useful, but WITHOUT 10 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or 11 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License 12 * version 2 for more details (a copy is included in the LICENSE file that 13 * accompanied this code). 14 * 15 * You should have received a copy of the GNU General Public License version 16 * 2 along with this work; if not, write to the Free Software Foundation, 17 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. 18 * 19 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA 20 * or visit www.oracle.com if you need additional information or have any 21 * questions. 22 * 23 */ 24 25 #include "precompiled.hpp" 26 #include "code/codeCache.hpp" 27 #include "code/relocInfo.hpp" 28 #include "code/relocInfo_ext.hpp" 29 #include "gc/shared/cardTable.hpp" 30 #include "gc/shared/cardTableModRefBS.hpp" 31 #include "gc/shared/collectedHeap.hpp" 32 #include "memory/universe.hpp" 33 #include "runtime/os.hpp" 34 #include "utilities/debug.hpp" 35 #ifdef COMPILER1 36 #include "c1/c1_globals.hpp" 37 #endif 38 39 address symbolic_Relocation::symbolic_value(symbolic_Relocation::symbolic_reference t) { 40 if (Universe::heap() == NULL) { 41 // the symbolic values are not needed so early 42 // (and most of them lead to errors if asked too early) 43 return NULL; 44 } 45 switch(t) { 46 case symbolic_Relocation::polling_page_reference: { 47 return os::get_polling_page(); 48 } 49 case symbolic_Relocation::eden_top_reference: { 50 if (!Universe::heap()->supports_inline_contig_alloc()) { 51 return NULL; 52 } 53 return (address)Universe::heap()->top_addr(); 54 } 55 case symbolic_Relocation::heap_end_reference: { 56 if (!Universe::heap()->supports_inline_contig_alloc()) { 57 return NULL; 58 } 59 return (address)Universe::heap()->end_addr(); 60 } 61 case symbolic_Relocation::card_table_reference: { 62 BarrierSet* bs = Universe::heap()->barrier_set(); 63 CardTableModRefBS* ct = (CardTableModRefBS*)bs; 64 return (address)ct->card_table()->byte_map_base(); 65 } 66 case symbolic_Relocation::mark_bits_reference: { 67 return (address)Universe::verify_mark_bits(); 68 } 69 case symbolic_Relocation::mark_mask_reference: { 70 return (address)Universe::verify_mark_mask(); 71 } 72 case symbolic_Relocation::oop_bits_reference: { 73 return (address)Universe::verify_oop_bits(); 74 } 75 case symbolic_Relocation::oop_mask_reference: { 76 return (address)Universe::verify_oop_mask(); 77 } 78 case symbolic_Relocation::debug_string_reference: { 79 return (address)"<Lost debug string>"; 80 } 81 default: { 82 // missing declaration 83 ShouldNotReachHere(); 84 return NULL; 85 } 86 } 87 }