1 /*
   2  * Copyright (c) 2016, 2017, 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 package jdk.tools.jaotc;
  25 
  26 import jdk.tools.jaotc.binformat.BinaryContainer;
  27 import jdk.tools.jaotc.binformat.Relocation;
  28 import jdk.tools.jaotc.binformat.Relocation.RelocType;
  29 import jdk.tools.jaotc.binformat.Symbol;
  30 
  31 import jdk.vm.ci.code.site.Mark;
  32 
  33 final class MarkProcessor {
  34 
  35     private final BinaryContainer binaryContainer;
  36 
  37     MarkProcessor(DataBuilder dataBuilder) {
  38         binaryContainer = dataBuilder.getBinaryContainer();
  39     }
  40 
  41     /**
  42      * Parse a {@link Mark} generated by the compiler and create all needed binary section
  43      * constructs.
  44      *
  45      * @param methodInfo compiled method info
  46      * @param mark mark being processed
  47      */
  48     void process(CompiledMethodInfo methodInfo, Mark mark) {
  49         MarkId markId = MarkId.getEnum((int) mark.id);
  50         switch (markId) {
  51             case EXCEPTION_HANDLER_ENTRY:
  52             case DEOPT_HANDLER_ENTRY:
  53                 break;
  54             case POLL_FAR:
  55             case POLL_RETURN_FAR:
  56             case CARD_TABLE_ADDRESS:
  57             case HEAP_TOP_ADDRESS:
  58             case HEAP_END_ADDRESS:
  59             case NARROW_KLASS_BASE_ADDRESS:
  60             case NARROW_OOP_BASE_ADDRESS:
  61             case CRC_TABLE_ADDRESS:
  62             case LOG_OF_HEAP_REGION_GRAIN_BYTES:
  63             case INLINE_CONTIGUOUS_ALLOCATION_SUPPORTED:
  64                 String vmSymbolName;
  65                 switch (markId) {
  66                     case POLL_FAR:
  67                     case POLL_RETURN_FAR:
  68                         vmSymbolName = BinaryContainer.getPollingPageSymbolName();
  69                         break;
  70                     case CARD_TABLE_ADDRESS:
  71                         vmSymbolName = BinaryContainer.getCardTableAddressSymbolName();
  72                         break;
  73                     case HEAP_TOP_ADDRESS:
  74                         vmSymbolName = BinaryContainer.getHeapTopAddressSymbolName();
  75                         break;
  76                     case HEAP_END_ADDRESS:
  77                         vmSymbolName = BinaryContainer.getHeapEndAddressSymbolName();
  78                         break;
  79                     case NARROW_KLASS_BASE_ADDRESS:
  80                         vmSymbolName = BinaryContainer.getNarrowKlassBaseAddressSymbolName();
  81                         break;
  82                     case NARROW_OOP_BASE_ADDRESS:
  83                         vmSymbolName = BinaryContainer.getNarrowOopBaseAddressSymbolName();
  84                         break;
  85                     case CRC_TABLE_ADDRESS:
  86                         vmSymbolName = BinaryContainer.getCrcTableAddressSymbolName();
  87                         break;
  88                     case LOG_OF_HEAP_REGION_GRAIN_BYTES:
  89                         vmSymbolName = BinaryContainer.getLogOfHeapRegionGrainBytesSymbolName();
  90                         break;
  91                     case INLINE_CONTIGUOUS_ALLOCATION_SUPPORTED:
  92                         vmSymbolName = BinaryContainer.getInlineContiguousAllocationSupportedSymbolName();
  93                         break;
  94                     default:
  95                         throw new InternalError("Unhandled mark: " + mark);
  96                 }
  97                 String s = "got." + vmSymbolName;
  98                 Symbol gotSymbol = binaryContainer.getGotSymbol(s);
  99                 assert gotSymbol != null : " Processing Mark: Encountered undefined got symbol for  " + mark;
 100                 final int textBaseOffset = methodInfo.getTextSectionOffset();
 101                 final int textOffset = textBaseOffset + mark.pcOffset;
 102                 Relocation reloc = new Relocation(textOffset, RelocType.EXTERNAL_PLT_TO_GOT, 8, binaryContainer.getCodeContainer(), gotSymbol);
 103                 binaryContainer.addRelocation(reloc);
 104                 break;
 105             case VERIFIED_ENTRY:
 106             case UNVERIFIED_ENTRY:
 107             case OSR_ENTRY:
 108             case INVOKEINTERFACE:
 109             case INVOKEVIRTUAL:
 110             case INVOKESTATIC:
 111             case INVOKESPECIAL:
 112             case INLINE_INVOKE:
 113             case POLL_NEAR:
 114             case POLL_RETURN_NEAR:
 115                 // Nothing to do.
 116                 break;
 117             default:
 118                 throw new InternalError("Unexpected mark found: " + mark);
 119         }
 120     }
 121 }