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comparison src/share/vm/runtime/sharedRuntime.cpp @ 2142:8012aa3ccede

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4926272: methodOopDesc::method_from_bcp is unsafe Reviewed-by: coleenp, jrose, kvn, dcubed
author never
date Thu, 13 Jan 2011 22:15:41 -0800
parents f95d63e2154a
children 3582bf76420e
comparison
equal deleted inserted replaced
2130:34d64ad817f4 2142:8012aa3ccede
1 /* 1 /*
2 * Copyright (c) 1997, 2010, Oracle and/or its affiliates. All rights reserved. 2 * Copyright (c) 1997, 2011, Oracle and/or its affiliates. All rights reserved.
3 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. 3 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
4 * 4 *
5 * This code is free software; you can redistribute it and/or modify it 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 6 * under the terms of the GNU General Public License version 2 only, as
7 * published by the Free Software Foundation. 7 * published by the Free Software Foundation.
942 // Find caller and bci from vframe 942 // Find caller and bci from vframe
943 methodHandle caller (THREAD, vfst.method()); 943 methodHandle caller (THREAD, vfst.method());
944 int bci = vfst.bci(); 944 int bci = vfst.bci();
945 945
946 // Find bytecode 946 // Find bytecode
947 Bytecode_invoke* bytecode = Bytecode_invoke_at(caller, bci); 947 Bytecode_invoke bytecode(caller, bci);
948 bc = bytecode->java_code(); 948 bc = bytecode.java_code();
949 int bytecode_index = bytecode->index(); 949 int bytecode_index = bytecode.index();
950 950
951 // Find receiver for non-static call 951 // Find receiver for non-static call
952 if (bc != Bytecodes::_invokestatic) { 952 if (bc != Bytecodes::_invokestatic) {
953 // This register map must be update since we need to find the receiver for 953 // This register map must be update since we need to find the receiver for
954 // compiled frames. The receiver might be in a register. 954 // compiled frames. The receiver might be in a register.
955 RegisterMap reg_map2(thread); 955 RegisterMap reg_map2(thread);
956 frame stubFrame = thread->last_frame(); 956 frame stubFrame = thread->last_frame();
957 // Caller-frame is a compiled frame 957 // Caller-frame is a compiled frame
958 frame callerFrame = stubFrame.sender(&reg_map2); 958 frame callerFrame = stubFrame.sender(&reg_map2);
959 959
960 methodHandle callee = bytecode->static_target(CHECK_(nullHandle)); 960 methodHandle callee = bytecode.static_target(CHECK_(nullHandle));
961 if (callee.is_null()) { 961 if (callee.is_null()) {
962 THROW_(vmSymbols::java_lang_NoSuchMethodException(), nullHandle); 962 THROW_(vmSymbols::java_lang_NoSuchMethodException(), nullHandle);
963 } 963 }
964 // Retrieve from a compiled argument list 964 // Retrieve from a compiled argument list
965 receiver = Handle(THREAD, callerFrame.retrieve_receiver(&reg_map2)); 965 receiver = Handle(THREAD, callerFrame.retrieve_receiver(&reg_map2));
1672 JavaThread* thread, const char* objName) { 1672 JavaThread* thread, const char* objName) {
1673 1673
1674 // Get target class name from the checkcast instruction 1674 // Get target class name from the checkcast instruction
1675 vframeStream vfst(thread, true); 1675 vframeStream vfst(thread, true);
1676 assert(!vfst.at_end(), "Java frame must exist"); 1676 assert(!vfst.at_end(), "Java frame must exist");
1677 Bytecode_checkcast* cc = Bytecode_checkcast_at( 1677 Bytecode_checkcast cc(vfst.method(), vfst.method()->bcp_from(vfst.bci()));
1678 vfst.method()->bcp_from(vfst.bci()));
1679 Klass* targetKlass = Klass::cast(vfst.method()->constants()->klass_at( 1678 Klass* targetKlass = Klass::cast(vfst.method()->constants()->klass_at(
1680 cc->index(), thread)); 1679 cc.index(), thread));
1681 return generate_class_cast_message(objName, targetKlass->external_name()); 1680 return generate_class_cast_message(objName, targetKlass->external_name());
1682 } 1681 }
1683 1682
1684 char* SharedRuntime::generate_wrong_method_type_message(JavaThread* thread, 1683 char* SharedRuntime::generate_wrong_method_type_message(JavaThread* thread,
1685 oopDesc* required, 1684 oopDesc* required,
1709 // Get a signature from the invoke instruction 1708 // Get a signature from the invoke instruction
1710 const char* mhName = "method handle"; 1709 const char* mhName = "method handle";
1711 const char* targetType = "the required signature"; 1710 const char* targetType = "the required signature";
1712 vframeStream vfst(thread, true); 1711 vframeStream vfst(thread, true);
1713 if (!vfst.at_end()) { 1712 if (!vfst.at_end()) {
1714 Bytecode_invoke* call = Bytecode_invoke_at(vfst.method(), vfst.bci()); 1713 Bytecode_invoke call(vfst.method(), vfst.bci());
1715 methodHandle target; 1714 methodHandle target;
1716 { 1715 {
1717 EXCEPTION_MARK; 1716 EXCEPTION_MARK;
1718 target = call->static_target(THREAD); 1717 target = call.static_target(THREAD);
1719 if (HAS_PENDING_EXCEPTION) { CLEAR_PENDING_EXCEPTION; } 1718 if (HAS_PENDING_EXCEPTION) { CLEAR_PENDING_EXCEPTION; }
1720 } 1719 }
1721 if (target.not_null() 1720 if (target.not_null()
1722 && target->is_method_handle_invoke() 1721 && target->is_method_handle_invoke()
1723 && required == target->method_handle_type()) { 1722 && required == target->method_handle_type()) {