src/hotspot/os/windows/safefetch_static_windows.cpp - master - githubmirror/panama-vector

src/hotspot/os/windows/safefetch_static_windows.cpp

61 строка2 KB

Saint Wesonga

8383990: Remove exception code filters from Windows AArch64 safefetch handler

15 май 2026, 22:01

15 май 2026, 22:01f66380e

/*
 * Copyright (c) 2022 SAP SE. All rights reserved.
 * Copyright (c) 2022, 2025, Oracle and/or its affiliates. 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 Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
 * or visit www.oracle.com if you need additional information or have any
 * questions.
 *
 */


#include "os_windows.hpp"
#include "runtime/os.hpp"
#include "runtime/safefetch.hpp"
#include "utilities/globalDefinitions.hpp"

#ifdef SAFEFETCH_METHOD_STATIC_ASSEMBLY

// SafeFetch handling, static assembly style:
//
// SafeFetch32 and SafeFetchN are implemented via static assembly
// and live in os_cpu/xx_xx/safefetch_xx_xx.S

extern "C" char _SafeFetch32_continuation[];
extern "C" char _SafeFetch32_fault[];

extern "C" char _SafeFetchN_continuation[];
extern "C" char _SafeFetchN_fault[];

bool handle_safefetch(int exception_code, address pc, void* context) {
  CONTEXT* ctx = (CONTEXT*)context;
  if (ctx != nullptr) {
    if (pc == (address)_SafeFetch32_fault) {
      os::win32::context_set_pc(ctx, (address)_SafeFetch32_continuation);
      return true;
    }

    if (pc == (address)_SafeFetchN_fault) {
      os::win32::context_set_pc(ctx, (address)_SafeFetchN_continuation);
      return true;
    }
  }
  return false;
}

#endif // SAFEFETCH_METHOD_STATIC_ASSEMBLY