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/cardTableModRefBS.hpp" 30 #include "gc/shared/collectedHeap.hpp" 31 #include "memory/universe.hpp" 32 #include "runtime/os.hpp" 33 #include "utilities/debug.hpp" 34 #ifdef COMPILER1 35 #include "c1/c1_globals.hpp" 36 #endif 37 38 address symbolic_Relocation::symbolic_value(symbolic_Relocation::symbolic_reference t) { 39 if (Universe::heap() == NULL) { 40 // the symbolic values are not needed so early 41 // (and most of them lead to errors if asked too early) 42 return NULL; 43 } 44 switch(t) { 45 case symbolic_Relocation::polling_page_reference: { 46 return os::get_polling_page(); 47 } 48 case symbolic_Relocation::eden_top_reference: { 49 if (!Universe::heap()->supports_inline_contig_alloc()) { 50 return NULL; 51 } 52 return (address)Universe::heap()->top_addr(); 53 } 54 case symbolic_Relocation::heap_end_reference: { 55 if (!Universe::heap()->supports_inline_contig_alloc()) { 56 return NULL; 57 } 58 return (address)Universe::heap()->end_addr(); 59 } 60 case symbolic_Relocation::card_table_reference: { 61 BarrierSet* bs = Universe::heap()->barrier_set(); 62 CardTableModRefBS* ct = (CardTableModRefBS*)bs; 63 return (address)ct->byte_map_base; 64 } 65 case symbolic_Relocation::mark_bits_reference: { 66 return (address)Universe::verify_mark_bits(); 67 } 68 case symbolic_Relocation::mark_mask_reference: { 69 return (address)Universe::verify_mark_mask(); 70 } 71 case symbolic_Relocation::oop_bits_reference: { 72 return (address)Universe::verify_oop_bits(); 73 } 74 case symbolic_Relocation::oop_mask_reference: { 75 return (address)Universe::verify_oop_mask(); 76 } 77 case symbolic_Relocation::debug_string_reference: { 78 return (address)"<Lost debug string>"; 79 } 80 default: { 81 // missing declaration 82 ShouldNotReachHere(); 83 return NULL; 84 } 85 } 86 }