1 /*
2 * Copyright (c) 2022 Huawei Device Co., Ltd.
3 * Licensed under the Apache License, Version 2.0 (the "License");
4 * you may not use this file except in compliance with the License.
5 * You may obtain a copy of the License at
6 *
7 * http://www.apache.org/licenses/LICENSE-2.0
8 *
9 * Unless required by applicable law or agreed to in writing, software
10 * distributed under the License is distributed on an "AS IS" BASIS,
11 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
12 * See the License for the specific language governing permissions and
13 * limitations under the License.
14 */
15
16 #include "ecmascript/platform/map.h"
17
18 #include <io.h>
19 #include <windows.h>
20
21 #ifdef ERROR
22 #undef ERROR
23 #endif
24
25 #include "ecmascript/log_wrapper.h"
26 #include "ecmascript/mem/mem.h"
27
28 namespace panda::ecmascript {
29 static constexpr int INSUFFICIENT_CONTINUOUS_MEM = 1455;
30
PageMap(size_t size,int prot,size_t alignment)31 MemMap PageMap(size_t size, int prot, size_t alignment)
32 {
33 ASSERT(size == AlignUp(size, PageSize()));
34 ASSERT(alignment == AlignUp(alignment, PageSize()));
35 size_t allocSize = size + alignment;
36 void *result = VirtualAlloc(nullptr, allocSize, MEM_COMMIT, prot);
37 if (result == nullptr) {
38 int errCode = GetLastError();
39 if (errCode == INSUFFICIENT_CONTINUOUS_MEM) {
40 LOG_NO_TAG(ERROR) << "[ArkRuntime Log]Failed to request a continuous segment of " << size
41 << " virtual memory. Please clean up other heavy processes or restart the computer.";
42 }
43 LOG_ECMA(FATAL) << "PageMap "<< size << ", prot:" << prot << " fail, the error code is: " << errCode;
44 }
45 if (alignment != 0) {
46 auto alignResult = AlignUp(reinterpret_cast<uintptr_t>(result), alignment);
47 return MemMap(result, reinterpret_cast<void *>(alignResult), size);
48 }
49 return MemMap(result, result, size);
50 }
51
PageUnmap(MemMap it)52 void PageUnmap(MemMap it)
53 {
54 if (!VirtualFree(it.GetOriginAddr(), 0, MEM_RELEASE)) {
55 int errCode = GetLastError();
56 LOG_ECMA(ERROR) << "PageUnmap failed, error code is " << errCode;
57 }
58 }
59
MachineCodePageMap(size_t size,int prot,size_t alignment)60 MemMap MachineCodePageMap(size_t size, int prot, size_t alignment)
61 {
62 MemMap memMap = PageMap(size, prot, alignment);
63 PageTag(memMap.GetMem(), memMap.GetSize());
64 return memMap;
65 }
66
MachineCodePageUnmap(MemMap it)67 void MachineCodePageUnmap(MemMap it)
68 {
69 PageTag(it.GetMem(), it.GetSize(), true);
70 PageUnmap(it);
71 }
72
PageRelease(void * mem,size_t size)73 void PageRelease([[maybe_unused]] void *mem, [[maybe_unused]] size_t size)
74 {
75 }
76
PageTag(void * mem,size_t size,bool remove)77 void PageTag([[maybe_unused]] void *mem, [[maybe_unused]] size_t size, [[maybe_unused]] bool remove)
78 {
79 }
80
PageProtect(void * mem,size_t size,int prot)81 void PageProtect(void *mem, size_t size, int prot)
82 {
83 [[maybe_unused]] DWORD oldProtect;
84 if (!VirtualProtect(mem, size, prot, &oldProtect)) {
85 int errCode = GetLastError();
86 LOG_ECMA(ERROR) << "PageProtect change to " << prot << " failed, error code is " << errCode;
87 }
88 }
89
PageSize()90 size_t PageSize()
91 {
92 SYSTEM_INFO info;
93 GetSystemInfo(&info);
94 return info.dwPageSize;
95 }
96 } // namespace panda::ecmascript
97