From 14a3bc2fa10e6d2436331f5bdcf3e2665a616137 Mon Sep 17 00:00:00 2001 From: Christopher Faylor Date: Sat, 1 Jul 2000 03:51:55 +0000 Subject: * Makefile.in: Use variables rather than configure constructs where appropriate. (LIBCOS): Find additional stub library stuff in their own subdirectory. * dcrt0.cc: Convert user_data pointer to static __cygwin_user_data area. (do_global_ctors): Check magic_bisquit for initialization. (dll_crt0_1): First group of premain functions prior to fd initialization. Run second group before calling main. (dll_crt0 ()): New function, called from new initialization code. (dll_crt0 (per_process *uptr)): Call new dll_crt0 () function on initialization. * debug.cc (thread_stub): Initialize bottom of stack with per-thread info. * environ.cc (parse_thing): Use binmode global to control CYGWIN=binmode behavior. * fhandler.cc (fhandler_base::open): Allow explicit setting of __fmode to O_BINARY or O_TEXT to override disk mount settings. * libcmain.cc: Move to lib subdirectory. * libccrt0.cc: Ditto. * dll_main.cc: Ditto. * dll_entry.cc: Ditto. * getopt.c: Ditto. * thread.cc (thread_init_wrapper): Call ExitThread explicitly rather than returning, as a preliminary step towards placing per thread info at the bottom of the stack. * winsup.h: Move per_process class to include/sys/cygwin.h. Declare new dll_crt0(). * include/cygwin/version.h: Bump API minor version. * binmode.c: New file. * textmode.c: Ditto. * lib/_cygwin_crt0_common.cc: Ditto. * lib/crt0.h: Ditto. * lib/cygwin_attach_dll.c: Ditto. * lib/cygwin_crt0.c: Ditto. * lib/dll_entry.cc: Ditto. * lib/dll_main.cc: Ditto. * lib/getopt.c: Ditto. * lib/libcmain.c: Ditto. * lib/premain0.c: Ditto. * lib/premain1.c: Ditto. * lib/premain2.c: Ditto. * lib/premain3.c: Ditto. --- winsup/cygwin/lib/_cygwin_crt0_common.cc | 76 ++++++++++++++++++++++++++++++++ 1 file changed, 76 insertions(+) create mode 100644 winsup/cygwin/lib/_cygwin_crt0_common.cc (limited to 'winsup/cygwin/lib/_cygwin_crt0_common.cc') diff --git a/winsup/cygwin/lib/_cygwin_crt0_common.cc b/winsup/cygwin/lib/_cygwin_crt0_common.cc new file mode 100644 index 000000000..ca249c69b --- /dev/null +++ b/winsup/cygwin/lib/_cygwin_crt0_common.cc @@ -0,0 +1,76 @@ +/* common.cc: common crt0 function for cygwin crt0's. + + Copyright 2000 Cygnus Solutions. + +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 +#include + +extern __declspec(dllimport) per_process __cygwin_user_data; + +extern "C" +{ +char **environ; +void cygwin_crt0 (MainFunc); +int cygwin_attach_dll (HMODULE, MainFunc); +int cygwin_attach_noncygwin_dll (HMODULE, MainFunc); +int main (int, char **, char **); +struct _reent *_impure_ptr; +int _fmode; + +/* Set up pointers to various pieces so the dll can then use them, + and then jump to the dll. */ + +void +_cygwin_crt0_common (MainFunc f) +{ + /* 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. */ + int onstack; + + /* The version numbers are the main source of compatibility checking. + As a backup to them, we use the size of the per_process struct. */ + __cygwin_user_data.magic_biscuit = sizeof (per_process); + + /* cygwin.dll version number in effect at the time the app was created. */ + __cygwin_user_data.dll_major = CYGWIN_VERSION_DLL_MAJOR; + __cygwin_user_data.dll_minor = CYGWIN_VERSION_DLL_MINOR; + __cygwin_user_data.api_major = CYGWIN_VERSION_API_MAJOR; + __cygwin_user_data.api_minor = CYGWIN_VERSION_API_MINOR; + + __cygwin_user_data.ctors = &__CTOR_LIST__; + __cygwin_user_data.dtors = &__DTOR_LIST__; + __cygwin_user_data.envptr = &environ; + __cygwin_user_data.impure_ptr_ptr = &_impure_ptr; + __cygwin_user_data.main = f; + __cygwin_user_data.premain[0] = cygwin_premain0; + __cygwin_user_data.premain[1] = cygwin_premain1; + __cygwin_user_data.premain[2] = cygwin_premain2; + __cygwin_user_data.premain[3] = cygwin_premain3; + __cygwin_user_data.fmode_ptr = &_fmode; + __cygwin_user_data.initial_sp = (char *) &onstack; + + /* Remember whatever the user linked his application with - or + point to entries in the dll. */ + __cygwin_user_data.malloc = &malloc; + __cygwin_user_data.free = &free; + __cygwin_user_data.realloc = &realloc; + __cygwin_user_data.calloc = &calloc; + + /* Setup the module handle so fork can get the path name. */ + __cygwin_user_data.hmodule = GetModuleHandle (0); + + /* variables for fork */ + __cygwin_user_data.data_start = &_data_start__; + __cygwin_user_data.data_end = &_data_end__; + __cygwin_user_data.bss_start = &_bss_start__; + __cygwin_user_data.bss_end = &_bss_end__; +} +} /* "C" */ -- cgit v1.2.3