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* external.cc (cygwin_internal): Export __cygwin_user_data.

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* include/sys/cygwin.h: Allow definition of per_process even when not compiling
with C++.
(cygwin_getinfo_types): Add CW_USER_DATA.
* lib/_cygwin_crt0_common.cc (_cygwin_crt0_common): Get __cygwin_user_data
pointer from cygwin_internal.  If it doesn't exist, return failure.  Use either
this pointer or passed in pointer throughout.  Clear forkee.
* lib/crt0.h: Accomodate argument changes to _cygwin_crt0_common.
* lib/cygwin_attach_dll.c (cygwin_attach_dll): Reorganize to allow use of newer
binaries with older DLLs.  Detect older DLLs when _cygwin_crt0_common returns 0
and allocate space for a per_process structure on the stack.
* lib/cygwin_crt0.c (cygwin_crt0): Ditto.
This commit is contained in:
Christopher Faylor
2000-07-08 04:36:27 +00:00
parent 77fcb25859
commit 85219b356e
7 changed files with 96 additions and 42 deletions
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19
winsup/cygwin/lib/cygwin_crt0.c
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@ -1,4 +1,4 @@
/* crt0.cc: crt0 for libc
/* cygwin_crt0.cc: crt0 for cygwin
Copyright 2000 Cygnus Solutions.
@ -8,17 +8,24 @@ This software is a copyrighted work licensed under the terms of the
Cygwin license. Please consult the file "CYGWIN_LICENSE" for
details. */
#undef __INSIDE_CYGWIN__
#include <windows.h>
#include <sys/cygwin.h>
#include "crt0.h"
extern void __stdcall _dll_crt0 (void) __declspec (dllimport) __attribute ((noreturn));
extern void dll_crt0__FP11per_process (struct per_process *) __declspec (dllimport) __attribute ((noreturn));
/* for main module */
void
cygwin_crt0 (MainFunc f)
{
_cygwin_crt0_common (f);
/* Jump into the dll. */
_dll_crt0 ();
struct per_process *u;
if (_cygwin_crt0_common (f, NULL))
u = NULL; /* Newer DLL. Use DLL internal per_process. */
else /* Older DLL. Provide a per_process */
{
u = (struct per_process *) alloca (sizeof (*u));
(void) _cygwin_crt0_common (f, u);
}
dll_crt0__FP11per_process (u); /* Jump into the dll, never to return */
}