* 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

@@ -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 <reent.h>
+#include <stdlib.h>
+
+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" */