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65 lines
2.1 KiB
C++
65 lines
2.1 KiB
C++
/*
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* Copyright (c) 2022 SAP SE. All rights reserved.
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* Copyright (c) 2022, 2025, Oracle and/or its affiliates. All rights reserved.
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* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
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*
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* This code is free software; you can redistribute it and/or modify it
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* under the terms of the GNU General Public License version 2 only, as
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* published by the Free Software Foundation.
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*
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* This code is distributed in the hope that it will be useful, but WITHOUT
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* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
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* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
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* version 2 for more details (a copy is included in the LICENSE file that
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* accompanied this code).
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*
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* You should have received a copy of the GNU General Public License version
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* 2 along with this work; if not, write to the Free Software Foundation,
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* Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
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*
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* Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
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* or visit www.oracle.com if you need additional information or have any
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* questions.
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*
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*/
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#include "os_windows.hpp"
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#include "runtime/os.hpp"
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#include "runtime/safefetch.hpp"
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#include "utilities/globalDefinitions.hpp"
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#ifdef SAFEFETCH_METHOD_STATIC_ASSEMBLY
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// SafeFetch handling, static assembly style:
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//
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// SafeFetch32 and SafeFetchN are implemented via static assembly
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// and live in os_cpu/xx_xx/safefetch_xx_xx.S
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extern "C" char _SafeFetch32_continuation[];
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extern "C" char _SafeFetch32_fault[];
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#ifdef _LP64
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extern "C" char _SafeFetchN_continuation[];
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extern "C" char _SafeFetchN_fault[];
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#endif // _LP64
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bool handle_safefetch(int exception_code, address pc, void* context) {
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CONTEXT* ctx = (CONTEXT*)context;
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if (exception_code == EXCEPTION_ACCESS_VIOLATION && ctx != nullptr) {
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if (pc == (address)_SafeFetch32_fault) {
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os::win32::context_set_pc(ctx, (address)_SafeFetch32_continuation);
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return true;
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}
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#ifdef _LP64
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if (pc == (address)_SafeFetchN_fault) {
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os::win32::context_set_pc(ctx, (address)_SafeFetchN_continuation);
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return true;
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}
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#endif
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}
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return false;
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}
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#endif // SAFEFETCH_METHOD_STATIC_ASSEMBLY
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