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annotate src/cpu/x86/vm/methodHandles_x86.hpp @ 20304:a22acf6d7598

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8048112: G1 Full GC needs to support the case when the very first region is not available Summary: Refactor preparation for compaction during Full GC so that it lazily initializes the first compaction point. This also avoids problems later when the first region may not be committed. Also reviewed by K. Barrett. Reviewed-by: brutisso
author tschatzl
date Mon, 21 Jul 2014 10:00:31 +0200
parents 65d07d9ee446
children
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1 /*
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2 * Copyright (c) 2010, 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
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25 // Platform-specific definitions for method handles.
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26 // These definitions are inlined into class MethodHandles.
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27
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28 // Adapters
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29 enum /* platform_dependent_constants */ {
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30 adapter_code_size = NOT_LP64(16000 DEBUG_ONLY(+ 25000)) LP64_ONLY(32000 DEBUG_ONLY(+ 150000))
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31 };
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32
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33 // Additional helper methods for MethodHandles code generation:
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34 public:
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35 static void load_klass_from_Class(MacroAssembler* _masm, Register klass_reg);
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36
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37 static void verify_klass(MacroAssembler* _masm,
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38 Register obj, SystemDictionary::WKID klass_id,
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39 const char* error_message = "wrong klass") NOT_DEBUG_RETURN;
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40
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41 static void verify_method_handle(MacroAssembler* _masm, Register mh_reg) {
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42 verify_klass(_masm, mh_reg, SystemDictionary::WK_KLASS_ENUM_NAME(java_lang_invoke_MethodHandle),
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43 "reference is a MH");
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44 }
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45
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46 static void verify_ref_kind(MacroAssembler* _masm, int ref_kind, Register member_reg, Register temp) NOT_DEBUG_RETURN;
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47
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48 // Similar to InterpreterMacroAssembler::jump_from_interpreted.
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49 // Takes care of special dispatch from single stepping too.
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50 static void jump_from_method_handle(MacroAssembler* _masm, Register method, Register temp,
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51 bool for_compiler_entry);
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52
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53 static void jump_to_lambda_form(MacroAssembler* _masm,
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54 Register recv, Register method_temp,
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55 Register temp2,
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56 bool for_compiler_entry);
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57
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58 static Register saved_last_sp_register() {
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59 // Should be in sharedRuntime, not here.
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60 return LP64_ONLY(r13) NOT_LP64(rsi);
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61 }