Commit Graph

11 Commits

Author SHA1 Message Date
Peter Wemm
3efeb2b693 Explicitly specify an alignment for abitag. Without it, gcc specifies a
section alignnment of 16 bytes for amd64 and this breaks file(1).
Before:
./cp: ELF 64-bit LSB executable, AMD x86-64, version 1 (FreeBSD), for \
  FreeBSD 127.7.9, statically linked, stripped
after:    ^^^^^^^
./ls: ELF 64-bit LSB executable, AMD x86-64, version 1 (FreeBSD), for \
  FreeBSD 5.0.1, dynamically linked (uses shared libs), stripped

The reason for this is that the NOTE sections are not contiguous
internally.  If the note section has an alignment of 16, then anything
that looks for the data is supposed to round up the payload start to
the next multiple of the alignment.  But FreeBSD/amd64 broke because the
structure is declared as a single structure, not a (header,payload) group,
where the payload had an explicit alignment roundup.

The alternative is to change things like file(1) to ignore the ELF payload
alignment rules for the PT_NOTE section only for FreeBSD.
2003-10-17 15:43:13 +00:00
David E. O'Brien
bbe4999bd1 Set abitag __unused. 2003-05-04 18:33:26 +00:00
David E. O'Brien
3222c45089 Fix the copyright dates. 2002-05-07 18:07:43 +00:00
David E. O'Brien
2040953a71 GC code that moved to crtbrand.c. 2002-01-28 19:02:34 +00:00
David E. O'Brien
9ac8182513 Feh, it helps to include a file other than yourself... wonder how
GCC cpp liked that.

Properly include the branding info.
2001-10-27 08:25:32 +00:00
David E. O'Brien
ae7c8a2bb8 * Bring back the guts of crt{i,n}.S. This allows C++ exceptions to work
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.
2000-10-28 21:26:48 +00:00
John Polstra
f6d15b87f8 This is step 1 in an effort to unify the start-up files for the
various architectures.  Now all the work is done in crtbegin.c.
It doesn't contain any assembly language code, so it should work
fine on all architectures.  (I have tested it on the i386 and the
alpha.) The old assembly language files crt[in].S are now empty
shells that generate no code or data.  They should not be removed
any time soon, because the various versions of gcc in src and ports
expect them to exist.

Next I will move crtbegin.c into a new common machine-independent
directory, and adjust the i386-elf Makefile to use that version.
After that I will adjust the alpha Makefile to use the common
version too.

Requested by:	obrien
2000-05-19 04:32:17 +00:00
Peter Wemm
7f3dea244c $Id$ -> $FreeBSD$ 1999-08-28 00:22:10 +00:00
John Polstra
0738f6e0c3 Reverse the order of processing object files within an executable or
shared library when invoking global constructors and destructors.
For constructors, the object files used to be processed from first
to last; now they're done from last to first.  (Destructors are done
in the opposite order, as required by the C++ standard.)  This makes
us consistent with standard gcc and egcs compilers.  It also
eliminates ordering differences between dynamic and static
executables.

Bump the value of __FreeBSD_version to 400002 to reflect this
change.
1999-03-13 01:35:44 +00:00
John Polstra
bb2b869188 Move the code for the ".init" and ".fini" sections outside of a
C function so the compiler won't try to emit line numbers for it
with "-g", breaking the build.  This has the nice side-effect of
making crtbegin.o and crtbeginS.o a little bit smaller.

Remove "-Wno-unused" from the Makefile.  Replace it with "__unused"
on particular function and variable declarations.
1999-03-12 17:33:28 +00:00
John Polstra
966a88d986 Import C startup files for ELF support.
Submitted by:	John Polstra <jdp@polstra.com>
1998-03-07 20:27:11 +00:00