Mercurial > hg > truffle
diff src/share/vm/c1x/c1x_JavaAccess.cpp @ 2046:cf75612bdaa5
Renamed file.
author | Thomas Wuerthinger <wuerthinger@ssw.jku.at> |
---|---|
date | Fri, 07 Jan 2011 18:48:48 +0100 |
parents | src/share/vm/c1x/c1x_TargetMethod.cpp@9c96c873c42b |
children | 9569fdf936ff |
line wrap: on
line diff
--- /dev/null Thu Jan 01 00:00:00 1970 +0000 +++ b/src/share/vm/c1x/c1x_JavaAccess.cpp Fri Jan 07 18:48:48 2011 +0100 @@ -0,0 +1,83 @@ +/* + * Copyright 2000-2010 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 "precompiled.hpp" +#include "c1x/c1x_JavaAccess.hpp" + +// This function is similar to javaClasses.cpp, it computes the field offset of a (static or instance) field. +// It looks up the name and signature symbols without creating new ones, all the symbols of these classes need to be already loaded. + +static void compute_offset(int &dest_offset, klassOop klass_oop, const char* name, const char* signature, bool static_field) { + symbolOop name_symbol = SymbolTable::probe(name, strlen(name)); + symbolOop signature_symbol = SymbolTable::probe(signature, strlen(signature)); +#ifdef DEBUG + if (name_symbol == NULL) { + tty->print_cr("symbol with name %s was not found in symbol table (klass=%s)", name, klass_oop->klass_part()->name()->as_C_string()); + } +#endif + assert(name_symbol != NULL, "symbol not found - class layout changed?"); + assert(signature_symbol != NULL, "symbol not found - class layout changed?"); + + instanceKlass* ik = instanceKlass::cast(klass_oop); + fieldDescriptor fd; + if (!ik->find_field(name_symbol, signature_symbol, &fd)) { + ResourceMark rm; + tty->print_cr("Invalid layout of %s at %s", name_symbol->as_C_string(), ik->external_name()); + fatal("Invalid layout of preloaded class"); + } + assert(fd.is_static() == static_field, "static/instance mismatch"); + dest_offset = fd.offset(); +} + +// This piece of macro magic creates the contents of the c1x_compute_offsets method that initializes the field indices of all the access classes. + +#define START_CLASS(name) { klassOop k = SystemDictionary::name##_klass(); + +#define END_CLASS } + +#define FIELD(klass, name, signature, static_field) compute_offset(klass::_##name##_offset, k, #name, signature, static_field); +#define CHAR_FIELD(klass, name) FIELD(klass, name, "C", false) +#define INT_FIELD(klass, name) FIELD(klass, name, "I", false) +#define BOOLEAN_FIELD(klass, name) FIELD(klass, name, "Z", false) +#define LONG_FIELD(klass, name) FIELD(klass, name, "J", false) +#define OOP_FIELD(klass, name, signature) FIELD(klass, name, signature, false) +#define STATIC_OOP_FIELD(klass, name, signature) FIELD(klass, name, signature, true) + + +void c1x_compute_offsets() { + COMPILER_CLASSES_DO(START_CLASS, END_CLASS, CHAR_FIELD, INT_FIELD, BOOLEAN_FIELD, LONG_FIELD, OOP_FIELD, STATIC_OOP_FIELD) +} + +#define EMPTY0 +#define EMPTY1(x) +#define EMPTY2(x,y) +#define FIELD2(klass, name) int klass::_##name##_offset = 0; +#define FIELD3(klass, name, sig) FIELD2(klass, name) + +COMPILER_CLASSES_DO(EMPTY1, EMPTY0, FIELD2, FIELD2, FIELD2, FIELD2, FIELD3, FIELD3) + + + + +