[CRT:STARTUP] Fix a Clang-Cl warning about GS_ExceptionPointers
[reactos.git] / sdk / lib / crt / startup / gs_support.c
1 /**
2 * This file has no copyright assigned and is placed in the Public Domain.
3 * This file is part of the w64 mingw-runtime package.
4 * No warranty is given; refer to the file DISCLAIMER.PD within this package.
5 */
6
7 #ifndef WIN32_LEAN_AND_MEAN
8 #define WIN32_LEAN_AND_MEAN
9 #endif
10 #define WIN32_NO_STATUS
11 #include <stdlib.h> /* abort () */
12 //#include <windows.h>
13 #include <stdarg.h>
14 #include <windef.h>
15 #include <winbase.h>
16 #undef WIN32_NO_STATUS
17 #include <ntstatus.h> /* STATUS macros */
18 #ifdef _WIN64
19 #include <intrin.h>
20 #endif
21
22 #ifdef _WIN64
23 #define DEFAULT_SECURITY_COOKIE 0x00002B992DDFA232ll
24 #else
25 #define DEFAULT_SECURITY_COOKIE 0xBB40E64E
26 #endif
27
28 /* Externals. */
29
30 typedef LONG NTSTATUS; /* same as in ntdef.h / winternl.h */
31
32 #define UNW_FLAG_NHANDLER 0x00
33
34 typedef union
35 {
36 unsigned __int64 ft_scalar;
37 FILETIME ft_struct;
38 } FT;
39
40 #ifndef _MSC_VER
41 static EXCEPTION_RECORD GS_ExceptionRecord;
42 static CONTEXT GS_ContextRecord;
43
44 static const EXCEPTION_POINTERS GS_ExceptionPointers = {
45 &GS_ExceptionRecord,&GS_ContextRecord
46 };
47 #endif
48
49 DECLSPEC_SELECTANY UINT_PTR __security_cookie = DEFAULT_SECURITY_COOKIE;
50 DECLSPEC_SELECTANY UINT_PTR __security_cookie_complement = ~(DEFAULT_SECURITY_COOKIE);
51
52 void __cdecl __security_init_cookie (void);
53
54 void __cdecl
55 __security_init_cookie (void)
56 {
57 UINT_PTR cookie;
58 FT systime = { 0, };
59 LARGE_INTEGER perfctr;
60
61 if (__security_cookie != DEFAULT_SECURITY_COOKIE)
62 {
63 __security_cookie_complement = ~__security_cookie;
64 return;
65 }
66
67 GetSystemTimeAsFileTime (&systime.ft_struct);
68 #ifdef _WIN64
69 cookie = systime.ft_scalar;
70 #else
71 cookie = systime.ft_struct.dwLowDateTime;
72 cookie ^= systime.ft_struct.dwHighDateTime;
73 #endif
74
75 cookie ^= GetCurrentProcessId ();
76 cookie ^= GetCurrentThreadId ();
77 cookie ^= GetTickCount ();
78
79 QueryPerformanceCounter (&perfctr);
80 #ifdef _WIN64
81 cookie ^= perfctr.QuadPart;
82 #else
83 cookie ^= perfctr.LowPart;
84 cookie ^= perfctr.HighPart;
85 #endif
86
87 #ifdef _WIN64
88 cookie &= 0x0000ffffffffffffll;
89 #endif
90
91 if (cookie == DEFAULT_SECURITY_COOKIE)
92 cookie = DEFAULT_SECURITY_COOKIE + 1;
93 __security_cookie = cookie;
94 __security_cookie_complement = ~cookie;
95 }
96
97
98 #if defined(__GNUC__) /* wrap msvc intrinsics onto gcc builtins */
99 #undef _ReturnAddress
100 #undef _AddressOfReturnAddress
101 #define _ReturnAddress() __builtin_return_address(0)
102 #define _AddressOfReturnAddress() __builtin_frame_address (0)
103 #endif /* __GNUC__ */
104
105 __declspec(noreturn) void __cdecl __report_gsfailure (ULONG_PTR);
106
107 #ifndef _MSC_VER
108 __declspec(noreturn) void __cdecl
109 __report_gsfailure (ULONG_PTR StackCookie)
110 {
111 volatile UINT_PTR cookie[2] __MINGW_ATTRIB_UNUSED;
112 #ifdef _WIN64
113 ULONG64 controlPC, imgBase, establisherFrame;
114 PRUNTIME_FUNCTION fctEntry;
115 PVOID hndData;
116
117 RtlCaptureContext (&GS_ContextRecord);
118 controlPC = GS_ContextRecord.Rip;
119 fctEntry = RtlLookupFunctionEntry (controlPC, &imgBase, NULL);
120 if (fctEntry != NULL)
121 {
122 RtlVirtualUnwind (UNW_FLAG_NHANDLER, imgBase, controlPC, fctEntry,
123 &GS_ContextRecord, &hndData, &establisherFrame, NULL);
124 }
125 else
126 #endif /* _WIN64 */
127 {
128 #ifdef _WIN64
129 GS_ContextRecord.Rip = (ULONGLONG) _ReturnAddress();
130 GS_ContextRecord.Rsp = (ULONGLONG) _AddressOfReturnAddress() + 8;
131 #else
132 GS_ContextRecord.Eip = (DWORD) _ReturnAddress();
133 GS_ContextRecord.Esp = (DWORD) _AddressOfReturnAddress() + 4;
134 #endif /* _WIN64 */
135 }
136
137 #ifdef _WIN64
138 GS_ExceptionRecord.ExceptionAddress = (PVOID) GS_ContextRecord.Rip;
139 GS_ContextRecord.Rcx = StackCookie;
140 #else
141 GS_ExceptionRecord.ExceptionAddress = (PVOID) GS_ContextRecord.Eip;
142 GS_ContextRecord.Ecx = StackCookie;
143 #endif /* _WIN64 */
144 GS_ExceptionRecord.ExceptionCode = STATUS_STACK_BUFFER_OVERRUN;
145 GS_ExceptionRecord.ExceptionFlags = EXCEPTION_NONCONTINUABLE;
146 cookie[0] = __security_cookie;
147 cookie[1] = __security_cookie_complement;
148 SetUnhandledExceptionFilter (NULL);
149 UnhandledExceptionFilter ((EXCEPTION_POINTERS *) &GS_ExceptionPointers);
150 TerminateProcess (GetCurrentProcess (), STATUS_STACK_BUFFER_OVERRUN);
151 abort();
152 }
153 #endif /* !_MSC_VER */