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1 // Copyright (c) 2006-2008 The Chromium Authors. All rights reserved. | 1 // Copyright (c) 2006-2008 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 // Define the necessary code and global data to look for kDebugOnStart command | 5 // Define the necessary code and global data to look for kDebugOnStart command |
6 // line argument. When the command line argument is detected, it invokes the | 6 // line argument. When the command line argument is detected, it invokes the |
7 // debugger, if no system-wide debugger is registered, a debug break is done. | 7 // debugger, if no system-wide debugger is registered, a debug break is done. |
8 | 8 |
9 #ifndef BASE_DEBUG_ON_START_H_ | 9 #ifndef BASE_DEBUG_ON_START_H_ |
10 #define BASE_DEBUG_ON_START_H_ | 10 #define BASE_DEBUG_ON_START_H_ |
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24 // Expected function type in the .CRT$XI* section. | 24 // Expected function type in the .CRT$XI* section. |
25 // Note: See VC\crt\src\internal.h for reference. | 25 // Note: See VC\crt\src\internal.h for reference. |
26 typedef int (__cdecl *PIFV)(void); | 26 typedef int (__cdecl *PIFV)(void); |
27 | 27 |
28 // Looks at the command line for kDebugOnStart argument. If found, it invokes | 28 // Looks at the command line for kDebugOnStart argument. If found, it invokes |
29 // the debugger, if this fails, it crashes. | 29 // the debugger, if this fails, it crashes. |
30 static int __cdecl Init(); | 30 static int __cdecl Init(); |
31 | 31 |
32 // Returns true if the 'argument' is present in the 'command_line'. It does | 32 // Returns true if the 'argument' is present in the 'command_line'. It does |
33 // not use the CRT, only Kernel32 functions. | 33 // not use the CRT, only Kernel32 functions. |
34 static bool FindArgument(wchar_t* command_line, const wchar_t* argument); | 34 static bool FindArgument(wchar_t* command_line, const char* argument); |
35 }; | 35 }; |
36 | 36 |
37 // Set the function pointer to our function to look for a crash on start. The | 37 // Set the function pointer to our function to look for a crash on start. The |
38 // XIB section is started pretty early in the program initialization so in | 38 // XIB section is started pretty early in the program initialization so in |
39 // theory it should be called before any user created global variable | 39 // theory it should be called before any user created global variable |
40 // initialization code and CRT initialization code. | 40 // initialization code and CRT initialization code. |
41 // Note: See VC\crt\src\defsects.inc and VC\crt\src\crt0.c for reference. | 41 // Note: See VC\crt\src\defsects.inc and VC\crt\src\crt0.c for reference. |
42 #ifdef _WIN64 | 42 #ifdef _WIN64 |
43 | 43 |
44 // "Fix" the segment. On x64, the .CRT segment is merged into the .rdata segment | 44 // "Fix" the segment. On x64, the .CRT segment is merged into the .rdata segment |
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58 #pragma data_seg(push, ".CRT$XIB") | 58 #pragma data_seg(push, ".CRT$XIB") |
59 // Declare the pointer so the CRT will find it. | 59 // Declare the pointer so the CRT will find it. |
60 DECLSPEC_SELECTANY DebugOnStart::PIFV debug_on_start = &DebugOnStart::Init; | 60 DECLSPEC_SELECTANY DebugOnStart::PIFV debug_on_start = &DebugOnStart::Init; |
61 // Fix back the segment. | 61 // Fix back the segment. |
62 #pragma data_seg(pop) | 62 #pragma data_seg(pop) |
63 | 63 |
64 #endif // _WIN64 | 64 #endif // _WIN64 |
65 #endif // defined(OS_WIN) | 65 #endif // defined(OS_WIN) |
66 | 66 |
67 #endif // BASE_DEBUG_ON_START_H_ | 67 #endif // BASE_DEBUG_ON_START_H_ |
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