when using the egcs and gcc-devel ports, along with GCC built from stock
public FSF sources. With out this change, FreeBSD will be removed from
the list of systems GCC 3.0 must be evaluated on before release. With
the effort some of us put into getting FreeBSD on this list, we should
not turn this effort into a waste, else we might not be worth fighting
for in the future. (note that Alpha and IA-64 versions of crt{i,n}.S
are needed)
* Switch from our own crt{begin,in} to those created from GCC's crtstuff.c.
This will allow us to switch to DWARF2 exceptions in the future, along with
staying in sync with any future GCC requirements.
* Break out our ELF branding bits into a seperate file. Currently this
is now included by our crt1.c files (since this functionality was part of
our native crtbegin.c). Later crtbrand.o will be merged in the creation
of crti.o.
from the "common" directory.
As a side-effect, this also fixes a bug in the ordering of global
constructors and destructors on the Alpha. See revision 1.3 of
"../common/crtbegin.c" for details.
pointers. The calls are in different sections from the functions
being called, and they can potentially be far away. On a very large
program, the 21-bit displacement field of the BSR instruction
overflowed at link time.
than ".so". The old extension conflicted with well-established
naming conventions for dynamically loadable modules.
The "clean" targets continue to remove ".so" files too, to deal with
old systems.
Add a bootstrap mode so that non-rtld versions of these objects can
be built when bootstrapping the system with NetBSD tools, headers
and libraries. Once the FreeBSD tools are built, the FreeBSD headers
are installed and *then* these objects can be recompiled with the
rtld references. Phew.
asm code didn't link the way it was supposed to and the calling convention
for the entry "function" turned out to be very different. On alpha
it's a true function, but on i386 it's a fudge. Blech.
So jdp suggested keeping separate sets of source and avoiding lots
of #ifdefs. These files are based on his i386-elf code, with crt1.c
borrowing code from NetBSD's crt0. The copyright reflects that.
Complicating matters, the code turned out to be difficult to bootstrap
build using NetBSD tools. To compile against the FreeBSD rtld header
requires FreeBSD specific headers, but these can't be installed until
the tools are built, and they can't be built without the FreeBSD crt
objects. Anal retentive. So I introduced a HAVE_RTLD #define that isn't
set during the build process until all the tools are built and the
headers installed.
now that has been committed.
The makefile is derived from the i386-elf version, modified to pick
up most of the source (except crt1.c) from i386-elf. With minor changes
to i386-elf/crt1.c, this directory can be combined with i386-elf to
be a single csu/elf directory for all seasons.
the rtld code pending implementation on the alpha.
The csu/i386-elf should be renamed as csu/elf and this directory
trashed. Consider this a temporary implementation.
