1 /* 2 * Copyright (c) 2019, Oracle and/or its affiliates. All rights reserved. 3 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. 4 * 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 7 * published by the Free Software Foundation. 8 * 9 * This code is distributed in the hope that it will be useful, but WITHOUT 10 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or 11 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License 12 * version 2 for more details (a copy is included in the LICENSE file that 13 * accompanied this code). 14 * 15 * You should have received a copy of the GNU General Public License version 16 * 2 along with this work; if not, write to the Free Software Foundation, 17 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. 18 * 19 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA 20 * or visit www.oracle.com if you need additional information or have any 21 * questions. 22 */ 23 24 #include "precompiled.hpp" 25 #include "gc/z/zSyscall_windows.hpp" 26 #include "logging/log.hpp" 27 #include "runtime/java.hpp" 28 #include "runtime/os.hpp" 29 30 ZSyscall::CreateFileMappingWFn ZSyscall::CreateFileMappingW; 31 ZSyscall::VirtualAlloc2Fn ZSyscall::VirtualAlloc2; 32 ZSyscall::VirtualFreeExFn ZSyscall::VirtualFreeEx; 33 ZSyscall::MapViewOfFile3Fn ZSyscall::MapViewOfFile3; 34 ZSyscall::UnmapViewOfFile2Fn ZSyscall::UnmapViewOfFile2; 35 36 template <typename Fn> 37 static void lookup_symbol(Fn*& fn, const char* library, const char* symbol) { 38 char ebuf[1024]; 39 void* const handle = os::dll_load(library, ebuf, sizeof(ebuf)); 40 if (handle == NULL) { 41 log_error(gc)("Failed to load library: %s", library); 42 vm_exit_during_initialization("ZGC requires Windows version 1803 or later"); 43 } 44 45 fn = reinterpret_cast<Fn*>(os::dll_lookup(handle, symbol)); 46 if (fn == NULL) { 47 log_error(gc)("Failed to lookup symbol: %s", symbol); 48 vm_exit_during_initialization("ZGC requires Windows version 1803 or later"); 49 } 50 } 51 52 void ZSyscall::initialize() { 53 lookup_symbol(CreateFileMappingW, "KernelBase", "CreateFileMappingW"); 54 lookup_symbol(VirtualAlloc2, "KernelBase", "VirtualAlloc2"); 55 lookup_symbol(VirtualFreeEx, "KernelBase", "VirtualFreeEx"); 56 lookup_symbol(MapViewOfFile3, "KernelBase", "MapViewOfFile3"); 57 lookup_symbol(UnmapViewOfFile2, "KernelBase", "UnmapViewOfFile2"); 58 }