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annotate src/share/vm/graal/graalJavaAccess.cpp @ 4181:319860ae697a

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Simplify FrameMap: make offsets of spill slots and outgoing parameters independent so that they can be allocated at the same time, eliminating the separate phases. This makes the separate StackBlock unnecesary. Change CiStackSlot to use byte offsets instead of spill slot index. This makes CiTarget.spillSlotSize unnecessary.
author Christian Wimmer <Christian.Wimmer@Oracle.com>
date Mon, 02 Jan 2012 14:16:08 -0800
parents a59727158259
children 511612d1b5c1
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1 /*
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2 * Copyright (c) 2011, 2012 Oracle and/or its affiliates. All rights reserved.
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3 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
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4 *
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5 * This code is free software; you can redistribute it and/or modify it
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6 * under the terms of the GNU General Public License version 2 only, as
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7 * published by the Free Software Foundation.
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8 *
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9 * This code is distributed in the hope that it will be useful, but WITHOUT
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10 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
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11 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
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12 * version 2 for more details (a copy is included in the LICENSE file that
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13 * accompanied this code).
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14 *
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15 * You should have received a copy of the GNU General Public License version
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16 * 2 along with this work; if not, write to the Free Software Foundation,
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17 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
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18 *
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19 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
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20 * or visit www.oracle.com if you need additional information or have any
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21 * questions.
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22 */
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23
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24 #include "precompiled.hpp"
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25 #include "graal/graalJavaAccess.hpp"
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26 #include "runtime/jniHandles.hpp"
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27 #include "classfile/symbolTable.hpp"
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28 // This function is similar to javaClasses.cpp, it computes the field offset of a (static or instance) field.
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29 // It looks up the name and signature symbols without creating new ones, all the symbols of these classes need to be already loaded.
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30
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31 void compute_offset(int &dest_offset, klassOop klass_oop, const char* name, const char* signature, bool static_field) {
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32 Symbol* name_symbol = SymbolTable::probe(name, (int)strlen(name));
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33 Symbol* signature_symbol = SymbolTable::probe(signature, (int)strlen(signature));
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34 #ifndef PRODUCT
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35 if (name_symbol == NULL) {
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36 tty->print_cr("symbol with name %s was not found in symbol table (klass=%s)", name, klass_oop->klass_part()->name()->as_C_string());
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37 }
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38 #endif
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39 guarantee(name_symbol != NULL, "symbol not found - class layout changed?");
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40 guarantee(signature_symbol != NULL, "symbol not found - class layout changed?");
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41
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42 instanceKlass* ik = instanceKlass::cast(klass_oop);
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43 fieldDescriptor fd;
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44 if (!ik->find_field(name_symbol, signature_symbol, &fd)) {
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45 ResourceMark rm;
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46 tty->print_cr("Invalid layout of %s at %s", name_symbol->as_C_string(), ik->external_name());
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47 fatal("Invalid layout of preloaded class");
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48 }
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49 guarantee(fd.is_static() == static_field, "static/instance mismatch");
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50 dest_offset = fd.offset();
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51 }
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52
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53 // This piece of macro magic creates the contents of the graal_compute_offsets method that initializes the field indices of all the access classes.
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54
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55 #define START_CLASS(name) { klassOop k = SystemDictionary::name##_klass(); assert(k != NULL, "Could not find class " #name "");
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56
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57 #define END_CLASS }
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58
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59 #define FIELD(klass, name, signature, static_field) compute_offset(klass::_##name##_offset, k, #name, signature, static_field);
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60 #define CHAR_FIELD(klass, name) FIELD(klass, name, "C", false)
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61 #define INT_FIELD(klass, name) FIELD(klass, name, "I", false)
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62 #define BOOLEAN_FIELD(klass, name) FIELD(klass, name, "Z", false)
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63 #define LONG_FIELD(klass, name) FIELD(klass, name, "J", false)
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64 #define FLOAT_FIELD(klass, name) FIELD(klass, name, "F", false)
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65 #define OOP_FIELD(klass, name, signature) FIELD(klass, name, signature, false)
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66 #define STATIC_OOP_FIELD(klass, name, signature) FIELD(klass, name, signature, true)
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68
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69 void graal_compute_offsets() {
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70 COMPILER_CLASSES_DO(START_CLASS, END_CLASS, CHAR_FIELD, INT_FIELD, BOOLEAN_FIELD, LONG_FIELD, FLOAT_FIELD, OOP_FIELD, STATIC_OOP_FIELD)
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71 }
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72
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73 #define EMPTY0
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74 #define EMPTY1(x)
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75 #define EMPTY2(x,y)
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76 #define FIELD2(klass, name) int klass::_##name##_offset = 0;
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77 #define FIELD3(klass, name, sig) FIELD2(klass, name)
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78
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79 COMPILER_CLASSES_DO(EMPTY1, EMPTY0, FIELD2, FIELD2, FIELD2, FIELD2, FIELD2, FIELD3, FIELD3)
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