commented out in the entire life of the 2.x+ branch and given the amount
of gcc-specific code we have and the warning checks that gcc does I'm not
sure that it is going to get us much for some time.
Replace the a.out emulation of 'struct linker_set' with something
a little more flexible. <sys/linker_set.h> now provides macros for
accessing elements and completely hides the implementation.
The linker_set.h macros have been on the back burner in various
forms since 1998 and has ideas and code from Mike Smith (SET_FOREACH()),
John Polstra (ELF clue) and myself (cleaned up API and the conversion
of the rest of the kernel to use it).
The macros declare a strongly typed set. They return elements with the
type that you declare the set with, rather than a generic void *.
For ELF, we use the magic ld symbols (__start_<setname> and
__stop_<setname>). Thanks to Richard Henderson <rth@redhat.com> for the
trick about how to force ld to provide them for kld's.
For a.out, we use the old linker_set struct.
NOTE: the item lists are no longer null terminated. This is why
the code impact is high in certain areas.
The runtime linker has a new method to find the linker set
boundaries depending on which backend format is in use.
linker sets are still module/kld unfriendly and should never be used
for anything that may be modular one day.
Reviewed by: eivind
We are way too inconsistent with our setting of the "schg" flag, and in
our default install, it doesn't really offer any additional security.
Reviewed by: arch@
that I removed in my last commit dealing with `make depend' bogons.
This commit has some races, but hopefully they are too short to matter.
Unfortuneatly, neither .newdep nor .olddep is removed by `make clean'.
Submitted by: bde
by the compiler. ie: char foo[0] comes out as 4 bytes on a.out, and
we depended on it coming out as 0 for the script version. :-(
Make double sure that genassym.o is built and nm'ed in elf mode.
(ia64 skipped since it is stuck on the linux toolchain and doesn't
understand the -elf switches)
o Use objdump instead of gensetdefs(1) to build the linker sets.
o Allow overriding of nm and objdump in resp. genassym.sh and
gensetdefs.pl for non-native toolchains.
Reviewed by: arch
Perl improvements: Jos Backus <josb@cncdsl.com>, benno
{kernel,modules}-reinstall.debug rather than {kernel,modules}-reinstall.
Otherwise, the '.debug' portion of the target is lost, and you end up
reinstalling the non debug version instead of the debug version.
doesn't exist. This could bite you by allowing you merrily install your
modules one on top of the other as the regular file ${DESTDIR}/modules
and think it completed properly...
world as was our old way, rather than when building a kernel.
Some people do not like the new way, and the release building still assumes
modules are built with the world.
