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Side by Side Diff: sandbox/win/src/service_resolver_32.cc

Issue 1232723002: win/clang: Remove unused variables in 32-bit builds. (Closed) Base URL: https://chromium.googlesource.com/chromium/src.git@master
Patch Set: Created 5 years, 5 months ago
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1 // Copyright (c) 2012 The Chromium Authors. All rights reserved. 1 // Copyright (c) 2012 The Chromium Authors. All rights reserved.
2 // Use of this source code is governed by a BSD-style license that can be 2 // Use of this source code is governed by a BSD-style license that can be
3 // found in the LICENSE file. 3 // found in the LICENSE file.
4 4
5 #include "sandbox/win/src/service_resolver.h" 5 #include "sandbox/win/src/service_resolver.h"
6 6
7 #include "base/memory/scoped_ptr.h" 7 #include "base/memory/scoped_ptr.h"
8 #include "sandbox/win/src/win_utils.h" 8 #include "sandbox/win/src/win_utils.h"
9 9
10 namespace { 10 namespace {
11 #pragma pack(push, 1) 11 #pragma pack(push, 1)
12 12
13 const BYTE kMovEax = 0xB8; 13 const BYTE kMovEax = 0xB8;
14 const BYTE kMovEdx = 0xBA; 14 const BYTE kMovEdx = 0xBA;
15 const USHORT kMovEdxEsp = 0xD48B; 15 const USHORT kMovEdxEsp = 0xD48B;
16 const USHORT kCallPtrEdx = 0x12FF; 16 const USHORT kCallPtrEdx = 0x12FF;
17 const USHORT kCallEdx = 0xD2FF; 17 const USHORT kCallEdx = 0xD2FF;
18 const BYTE kCallEip = 0xE8; 18 const BYTE kCallEip = 0xE8;
19 const BYTE kRet = 0xC2; 19 const BYTE kRet = 0xC2;
20 const BYTE kRet2 = 0xC3; 20 const BYTE kRet2 = 0xC3;
21 const BYTE kNop = 0x90;
22 const USHORT kJmpEdx = 0xE2FF; 21 const USHORT kJmpEdx = 0xE2FF;
23 const USHORT kXorEcx = 0xC933; 22 const USHORT kXorEcx = 0xC933;
24 const ULONG kLeaEdx = 0x0424548D; 23 const ULONG kLeaEdx = 0x0424548D;
25 const ULONG kCallFs1 = 0xC015FF64; 24 const ULONG kCallFs1 = 0xC015FF64;
26 const USHORT kCallFs2 = 0; 25 const USHORT kCallFs2 = 0;
27 const BYTE kCallFs3 = 0; 26 const BYTE kCallFs3 = 0;
28 const BYTE kAddEsp1 = 0x83; 27 const BYTE kAddEsp1 = 0x83;
29 const USHORT kAddEsp2 = 0x4C4; 28 const USHORT kAddEsp2 = 0x4C4;
30 const BYTE kJmp32 = 0xE9; 29 const BYTE kJmp32 = 0xE9;
31 const USHORT kSysenter = 0x340F; 30 const USHORT kSysenter = 0x340F;
32 31
33 const int kMaxService = 1000;
34
35 // Service code for 32 bit systems. 32 // Service code for 32 bit systems.
36 // NOTE: on win2003 "call dword ptr [edx]" is "call edx". 33 // NOTE: on win2003 "call dword ptr [edx]" is "call edx".
37 struct ServiceEntry { 34 struct ServiceEntry {
38 // This struct contains roughly the following code: 35 // This struct contains roughly the following code:
39 // 00 mov eax,25h 36 // 00 mov eax,25h
40 // 05 mov edx,offset SharedUserData!SystemCallStub (7ffe0300) 37 // 05 mov edx,offset SharedUserData!SystemCallStub (7ffe0300)
41 // 0a call dword ptr [edx] 38 // 0a call dword ptr [edx]
42 // 0c ret 2Ch 39 // 0c ret 2Ch
43 // 0f nop 40 // 0f nop
44 BYTE mov_eax; // = B8 41 BYTE mov_eax; // = B8
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418 return false; 415 return false;
419 } 416 }
420 417
421 // Save the verified code 418 // Save the verified code
422 memcpy(local_thunk, &function_code, sizeof(function_code)); 419 memcpy(local_thunk, &function_code, sizeof(function_code));
423 420
424 return true; 421 return true;
425 } 422 }
426 423
427 } // namespace sandbox 424 } // namespace sandbox
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