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On Thu, Sep 09, 2004 at 03:47:42PM -0400, Jeff Johnston wrote:
Patch checked in with modifications to make it compile for _REENT_SMALL.
It appears that this patch changes the size of the _reent structure, causing problems for cygwin when interacting with any programs which were linked with the previous structure.
Isn't changing the size of reent a bad idea, or, at least, isn't making changes to the middle of _reent a no-no?
cgf
-- Jeff J.
Paul Brook wrote:
The attached patch implements __cxa_atexit and __cxa_finalize.
As the name suggests these are used by C++ code to register static object destructors. They are documented in section 3.3.5 of the C++ ABI (http://www.codesourcery.com/cxx-abi/abi.html)
Despite this they are generally provided by the C library, not the C++ runtime library.
I basically took the exitsing atexit/on_exit implementation, broke it out into separate files, and added the extra _dso_handle field. I also modified the _REENT_SMALL case to allow more than 32 handlers to be registered.
Tested with cross to arm-none-elf. Ok?
Paul
2004-09-03 Paul Brook <paul@codesourcery.com>
* libc/include/sys/reent.h (struct _on_exit_args): Add _dso_handle and _is_cxa. (struct _atexit): Add _next when _REENT_SMALL. (struct _reent): Add _atexit0 when _REENT_SMALL. (_REENT_INIT_PTR): Adjust. * libc/stdlib/Makefile.am (GENERAL_SOURCES): Add __atexit.c and __call_exit.c. (EXTENDED_SOURCES): Add cxa_atexit.c and cxa_finalize.c. * libc/stdlib/Makefile.in: Regenerate. * libc/stdlib/__atexit.c: New file. * libc/stdlib/__call_atexit.c: New file. * libc/stdlib/atexit.h: Remove old definitions. Add new. * libc/stdlib/atexit.c (atexit): Use __register_exitproc. * libc/stdlib/cxa_atexit.c: New file. * libc/stdlib/cxa_finalize.c: New file. * libc/stdlib/exit.c (exit): Use __call_exitprocs. * libc/stdlib/on_exit.c (on_exit): Use __register_exitproc.
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