diff options
Diffstat (limited to 'winsup/cygwin/lib/_cygwin_crt0_common.cc')
| -rw-r--r-- | winsup/cygwin/lib/_cygwin_crt0_common.cc | 194 |
1 files changed, 0 insertions, 194 deletions
diff --git a/winsup/cygwin/lib/_cygwin_crt0_common.cc b/winsup/cygwin/lib/_cygwin_crt0_common.cc deleted file mode 100644 index 718ce941e..000000000 --- a/winsup/cygwin/lib/_cygwin_crt0_common.cc +++ /dev/null @@ -1,194 +0,0 @@ -/* _cygwin_crt0_common.cc: common crt0 function for cygwin crt0's. - - Copyright 2000, 2001, 2002, 2003, 2004, 2009, 2010, 2011, 2012, 2013 - Red Hat, Inc. - -This file is part of Cygwin. - -This software is a copyrighted work licensed under the terms of the -Cygwin license. Please consult the file "CYGWIN_LICENSE" for -details. */ - -#include "winsup.h" -#include "crt0.h" -#include "cygwin-cxx.h" - -/* Weaken these declarations so the references don't pull in C++ dependencies - unnecessarily. */ -#define WEAK __attribute__ ((weak)) - -#ifdef __x86_64__ -#define REAL_ZNWX "__real__Znwm" -#define REAL_ZNAX "__real__Znam" -#define REAL_ZNWX_NOTHROW_T "__real__ZnwmRKSt9nothrow_t" -#define REAL_ZNAX_NOTHROW_T "__real__ZnamRKSt9nothrow_t" -#else -#define REAL_ZNWX "___real__Znwj" -#define REAL_ZNAX "___real__Znaj" -#define REAL_ZNWX_NOTHROW_T "___real__ZnwjRKSt9nothrow_t" -#define REAL_ZNAX_NOTHROW_T "___real__ZnajRKSt9nothrow_t" -#endif -#define REAL_ZDLPV _SYMSTR (__real__ZdlPv) -#define REAL_ZDAPV _SYMSTR (__real__ZdaPv) -#define REAL_ZDLPV_NOTHROW_T _SYMSTR (__real__ZdlPvRKSt9nothrow_t) -#define REAL_ZDAPV_NOTHROW_T _SYMSTR (__real__ZdaPvRKSt9nothrow_t) - -/* Use asm names to bypass the --wrap that is being applied to redirect all other - references to these operators toward the redirectors in the Cygwin DLL; this - way we can record what definitions were visible at final link time but still - send all calls to the redirectors. */ -extern WEAK void *operator new(std::size_t sz) throw (std::bad_alloc) - __asm__ (REAL_ZNWX); -extern WEAK void *operator new[](std::size_t sz) throw (std::bad_alloc) - __asm__ (REAL_ZNAX); -extern WEAK void operator delete(void *p) throw() - __asm__ (REAL_ZDLPV); -extern WEAK void operator delete[](void *p) throw() - __asm__ (REAL_ZDAPV); -extern WEAK void *operator new(std::size_t sz, const std::nothrow_t &nt) throw() - __asm__ (REAL_ZNWX_NOTHROW_T); -extern WEAK void *operator new[](std::size_t sz, const std::nothrow_t &nt) throw() - __asm__ (REAL_ZNAX_NOTHROW_T); -extern WEAK void operator delete(void *p, const std::nothrow_t &nt) throw() - __asm__ (REAL_ZDLPV_NOTHROW_T); -extern WEAK void operator delete[](void *p, const std::nothrow_t &nt) throw() - __asm__ (REAL_ZDAPV_NOTHROW_T); - -/* Avoid an info message from linker when linking applications. */ -extern __declspec(dllimport) struct _reent *_impure_ptr; - -/* Initialised in _cygwin_dll_entry. */ -extern int __dynamically_loaded; - -#undef environ - -extern "C" -{ -#ifndef __x86_64__ -char **environ; -#endif -int _fmode; - -extern char __RUNTIME_PSEUDO_RELOC_LIST__; -extern char __RUNTIME_PSEUDO_RELOC_LIST_END__; -#ifdef __x86_64__ -extern char __image_base__; -#define _image_base__ __image_base__ -#else -extern char _image_base__; -#endif - -struct per_process_cxx_malloc __cygwin_cxx_malloc = -{ - &(operator new), &(operator new[]), - &(operator delete), &(operator delete[]), - &(operator new), &(operator new[]), - &(operator delete), &(operator delete[]) -}; - -/* Set up pointers to various pieces so the dll can then use them, - and then jump to the dll. */ - -int __stdcall -_cygwin_crt0_common (MainFunc f, per_process *u) -{ - per_process *newu = (per_process *) cygwin_internal (CW_USER_DATA); - bool uwasnull; - - /* u is non-NULL if we are in a DLL, and NULL in the main exe. - newu is the Cygwin DLL's internal per_process and never NULL. */ - if (u != NULL) - uwasnull = false; /* Caller allocated space for per_process structure. */ - else - { - u = newu; /* Using DLL built-in per_process. */ - uwasnull = true; /* Remember for later. */ - } - - /* The version numbers are the main source of compatibility checking. - As a backup to them, we use the size of the per_process struct. */ - u->magic_biscuit = sizeof (per_process); - - /* cygwin.dll version number in effect at the time the app was created. */ - u->dll_major = CYGWIN_VERSION_DLL_MAJOR; - u->dll_minor = CYGWIN_VERSION_DLL_MINOR; - u->api_major = CYGWIN_VERSION_API_MAJOR; - u->api_minor = CYGWIN_VERSION_API_MINOR; - - u->ctors = &__CTOR_LIST__; - u->dtors = &__DTOR_LIST__; -#ifndef __x86_64__ - u->envptr = &environ; -#endif - if (uwasnull) - _impure_ptr = u->impure_ptr; /* Use field initialized in newer DLLs. */ - else - u->impure_ptr_ptr = &_impure_ptr; /* Older DLLs need this. */ - - u->main = f; - - /* These functions are executed prior to main. They are just stubs unless the - user overrides them. */ - u->premain[0] = cygwin_premain0; - u->premain[1] = cygwin_premain1; - u->premain[2] = cygwin_premain2; - u->premain[3] = cygwin_premain3; - u->fmode_ptr = &_fmode; - - /* This is used to record what the initial sp was. The value is needed - when copying the parent's stack to the child during a fork. */ - u->initial_sp = (char *) __builtin_frame_address (1); - - /* Remember whatever the user linked his application with - or - point to entries in the dll. */ - u->malloc = &malloc; - u->free = &free; - u->realloc = &realloc; - u->calloc = &calloc; - u->posix_memalign = &posix_memalign; - - /* Likewise for the C++ memory operators, if any, but not if we - were dlopen()'d, as we might get dlclose()'d and that would - leave stale function pointers behind. */ - if (newu && newu->cxx_malloc && !__dynamically_loaded) - { - /* Inherit what we don't override. */ -#define CONDITIONALLY_OVERRIDE(MEMBER) \ - if (!__cygwin_cxx_malloc.MEMBER) \ - __cygwin_cxx_malloc.MEMBER = newu->cxx_malloc->MEMBER; - CONDITIONALLY_OVERRIDE(oper_new); - CONDITIONALLY_OVERRIDE(oper_new__); - CONDITIONALLY_OVERRIDE(oper_delete); - CONDITIONALLY_OVERRIDE(oper_delete__); - CONDITIONALLY_OVERRIDE(oper_new_nt); - CONDITIONALLY_OVERRIDE(oper_new___nt); - CONDITIONALLY_OVERRIDE(oper_delete_nt); - CONDITIONALLY_OVERRIDE(oper_delete___nt); - /* Now update the resulting set into the global redirectors. */ - *newu->cxx_malloc = __cygwin_cxx_malloc; - } - - /* Setup the module handle so fork can get the path name. */ - u->hmodule = GetModuleHandle (0); - - /* variables for fork */ -#ifdef __x86_64__ - u->data_start = &__data_start__; - u->data_end = &__data_end__; - u->bss_start = &__bss_start__; - u->bss_end = &__bss_end__; -#else - u->data_start = &_data_start__; - u->data_end = &_data_end__; - u->bss_start = &_bss_start__; - u->bss_end = &_bss_end__; -#endif - u->pseudo_reloc_start = &__RUNTIME_PSEUDO_RELOC_LIST__; - u->pseudo_reloc_end = &__RUNTIME_PSEUDO_RELOC_LIST_END__; - u->image_base = &_image_base__; - /* This is actually a dummy call to force the linker to load this - symbol for older apps which need it. */ - _pei386_runtime_relocator (NULL); - return 1; -} -} /* "C" */ |