| /** |
| * This file has no copyright assigned and is placed in the Public Domain. |
| * This file is part of the mingw-w64 runtime package. |
| * No warranty is given; refer to the file DISCLAIMER.PD within this package. |
| * |
| * Written by Kai Tietz <kai.tietz@onevision.com> |
| */ |
| |
| #ifdef CRTDLL |
| #undef CRTDLL |
| #endif |
| |
| #include <sect_attribs.h> |
| |
| #ifndef WIN32_LEAN_AND_MEAN |
| #define WIN32_LEAN_AND_MEAN |
| #endif |
| #include <windows.h> |
| |
| #include <stdio.h> |
| #include <memory.h> |
| #include <malloc.h> |
| |
| #ifndef __INTERNAL_FUNC_DEFINED |
| #define __INTERNAL_FUNC_DEFINED |
| typedef void (__cdecl *_PVFV)(void); |
| typedef int (__cdecl *_PIFV)(void); |
| typedef void (__cdecl *_PVFI)(int); |
| #endif |
| |
| extern WINBOOL __mingw_TLScallback (HANDLE hDllHandle, DWORD reason, LPVOID reserved); |
| |
| #define FUNCS_PER_NODE 30 |
| |
| typedef struct TlsDtorNode { |
| int count; |
| struct TlsDtorNode *next; |
| _PVFV funcs[FUNCS_PER_NODE]; |
| } TlsDtorNode; |
| |
| ULONG _tls_index = 0; |
| |
| /* TLS raw template data start and end. |
| We use here pointer-types for start/end so that tls-data remains |
| aligned on pointer-size-width. This seems to be required for |
| pe-loader. */ |
| _CRTALLOC(".tls$AAA") char *_tls_start = NULL; |
| _CRTALLOC(".tls$ZZZ") char *_tls_end = NULL; |
| |
| _CRTALLOC(".CRT$XLA") PIMAGE_TLS_CALLBACK __xl_a = 0; |
| _CRTALLOC(".CRT$XLZ") PIMAGE_TLS_CALLBACK __xl_z = 0; |
| |
| _CRTALLOC(".tls") const IMAGE_TLS_DIRECTORY _tls_used = { |
| (ULONG_PTR) &_tls_start, (ULONG_PTR) &_tls_end, |
| (ULONG_PTR) &_tls_index, (ULONG_PTR) (&__xl_a+1), |
| (ULONG) 0, (ULONG) 0 |
| }; |
| |
| #ifndef __CRT_THREAD |
| #ifdef HAVE_ATTRIBUTE_THREAD |
| #define __CRT_THREAD __declspec(thread) |
| #else |
| #define __CRT_THREAD __thread |
| #endif |
| #endif |
| |
| #define DISABLE_MS_TLS 1 |
| |
| static _CRTALLOC(".CRT$XDA") _PVFV __xd_a = 0; |
| static _CRTALLOC(".CRT$XDZ") _PVFV __xd_z = 0; |
| |
| #if !defined (DISABLE_MS_TLS) |
| static __CRT_THREAD TlsDtorNode *dtor_list; |
| static __CRT_THREAD TlsDtorNode dtor_list_head; |
| #endif |
| |
| extern int _CRT_MT; |
| |
| BOOL WINAPI __dyn_tls_init (HANDLE, DWORD, LPVOID); |
| |
| BOOL WINAPI |
| __dyn_tls_init (HANDLE hDllHandle, DWORD dwReason, LPVOID lpreserved) |
| { |
| _PVFV *pfunc; |
| uintptr_t ps; |
| |
| /* We don't let us trick here. */ |
| if (_CRT_MT != 2) |
| _CRT_MT = 2; |
| |
| if (dwReason != DLL_THREAD_ATTACH) |
| { |
| if (dwReason == DLL_PROCESS_ATTACH) |
| __mingw_TLScallback (hDllHandle, dwReason, lpreserved); |
| return TRUE; |
| } |
| |
| ps = (uintptr_t) &__xd_a; |
| ps += sizeof (uintptr_t); |
| for ( ; ps != (uintptr_t) &__xd_z; ps += sizeof (uintptr_t)) |
| { |
| pfunc = (_PVFV *) ps; |
| if (*pfunc != NULL) |
| (*pfunc)(); |
| } |
| return TRUE; |
| } |
| |
| const PIMAGE_TLS_CALLBACK __dyn_tls_init_callback = (const PIMAGE_TLS_CALLBACK) __dyn_tls_init; |
| _CRTALLOC(".CRT$XLC") PIMAGE_TLS_CALLBACK __xl_c = (PIMAGE_TLS_CALLBACK) __dyn_tls_init; |
| |
| int __cdecl __tlregdtor (_PVFV); |
| |
| int __cdecl |
| __tlregdtor (_PVFV func) |
| { |
| if (!func) |
| return 0; |
| #if !defined (DISABLE_MS_TLS) |
| if (dtor_list == NULL) |
| { |
| dtor_list = &dtor_list_head; |
| dtor_list_head.count = 0; |
| } |
| else if (dtor_list->count == FUNCS_PER_NODE) |
| { |
| TlsDtorNode *pnode = (TlsDtorNode *) malloc (sizeof (TlsDtorNode)); |
| if (pnode == NULL) |
| return -1; |
| pnode->count = 0; |
| pnode->next = dtor_list; |
| dtor_list = pnode; |
| |
| dtor_list->count = 0; |
| } |
| dtor_list->funcs[dtor_list->count++] = func; |
| #endif |
| return 0; |
| } |
| |
| static BOOL WINAPI |
| __dyn_tls_dtor (HANDLE hDllHandle, DWORD dwReason, LPVOID lpreserved) |
| { |
| #if !defined (DISABLE_MS_TLS) |
| TlsDtorNode *pnode, *pnext; |
| int i; |
| #endif |
| |
| if (dwReason != DLL_THREAD_DETACH && dwReason != DLL_PROCESS_DETACH) |
| return TRUE; |
| /* As TLS variables are detroyed already by DLL_THREAD_DETACH |
| call, we have to avoid access on the possible DLL_PROCESS_DETACH |
| call the already destroyed TLS vars. |
| TODO: The used local thread based variables have to be handled |
| manually, so that we can control their lifetime here. */ |
| #if !defined (DISABLE_MS_TLS) |
| if (dwReason != DLL_PROCESS_DETACH) |
| { |
| for (pnode = dtor_list; pnode != NULL; pnode = pnext) |
| { |
| for (i = pnode->count - 1; i >= 0; --i) |
| { |
| if (pnode->funcs[i] != NULL) |
| (*pnode->funcs[i])(); |
| } |
| pnext = pnode->next; |
| if (pnext != NULL) |
| free ((void *) pnode); |
| } |
| } |
| #endif |
| __mingw_TLScallback (hDllHandle, dwReason, lpreserved); |
| return TRUE; |
| } |
| |
| _CRTALLOC(".CRT$XLD") PIMAGE_TLS_CALLBACK __xl_d = (PIMAGE_TLS_CALLBACK) __dyn_tls_dtor; |
| |
| |
| int mingw_initltsdrot_force = 0; |
| int mingw_initltsdyn_force = 0; |
| int mingw_initltssuo_force = 0; |