Age | Commit message (Collapse) | Author |
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with __NR_mmap is not available (i.e. only __NR_mmap2)
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Hi
I just noticed that gcc has an "b"(Address base register) operand that
will match all "r" registers but r0. It is a better fix then adding
r0 to the clobber list.
What do you think?
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in libdl pointing to the local 'foobar' function is garbage. This cleans all
that up and makes the code much less horrible. Now it is only really really
ugly (which is a marked improvement),
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white space cleanup and optimize the inner loop in dl_find_hash.
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lookup on 'atexit' got me excited and I started fixing the same
problem elsewhere. Except these were correct as-was, and were
not a problem....
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mips mostly working. From there, I tracked the bash failure to a
bad _dl_atexit address and Erik took it from there.
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This patch adds code to uClibc to support a new ABI designed for the
FR-V architecture, that enables text segments of executables and
shared libraries to be shared by multiple processes on an OS such as
uClinux, that can run on FR-V processors without an MMU.
Patches for binutils and GCC have just been posted in the
corresponding mailing lists. The binutils patch was approved,
but there's one additional patch pending review, that I posted
this week. An updated GCC patch will be posted to
gcc-patches@gcc.gnu.org as soon as I complete testing (I used a
known-good compiler to test the uClibc patch below).
Since the existing dynamic loader code didn't support independent
relocation of segments, it required changes that were somewhat
extensive. I've added a number of new machine-specific macros to try
to keep the platform and ABI-specific details outside the generic
code. I hope this is not a problem.
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Begin converting some big ugly macros to inline functions
instead
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hacks. Just check for the elf magic string one byte at a time....
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sensible -1 fd, rather than pretending to work off of fd 0, which makes
absolutely no sense.
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since gdb can't do anything for us.
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Also, if you are to enable SUPPORT_LD_DEBUG on MIPS, I think this
patch is needed too.
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Hi it is me again.
This is the latest ldso patch. the NEW weak symbol handling works now
with a little special handling in _dl_find_hash(). You get to chose
if you want the new or old handling :)
There was 2 missing _dl_check_if_named_library_is_loaded() calls in _dlopen().
I then disabled the _dl_check_if_named_library_is_loaded() in dl-elf.c since
it is rendundant.
Question, why does some _dl_linux_resolver(), like i386, have 2 calls
to _dl_find_hash()? I think that is wrong, isn't it?
I really hope you can check this out soon ...
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problem with mips -- contrary to my expectation gcc on mips _always_ defines
__PIC__ which breaks the assumption inherent in my code. This should fix
things up.
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till I properly finish the next step in my evil plan.
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location for this stuff
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to be arch specific to work properly.
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Hi again
All dltest* and test* programs pass for me.
uClibc ld.so resolves according to the OLD weak symbol handling.
I have tried to use the new scheme as well, but that segfaults in all
cases but test3.
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to make it easier to treat it specially while not bothering the
rest of the code with the same constraints.
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-Erik
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Hello,
the attached patch fixes ldso compilation on sparc-linux (at least with
sparc32 userland). It was made against uClibc 0.9.21, but it's still OK
with 0.9.26.
There were three problems:
- missing __NR_getpid definition
- conflicting prototypes in elfinterp.c
- syntax error (missing semicolon) in ldso.c
With this patch shared libraries and ldso can be built on sparc.
It contains also ldso.c syntax fix for m68k - there was the same
mistake two lines earlier; but I didn't test build on m68k.
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I still don't have a good handle on why and when the different
scope values should be used.
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> Not there yet, but the interfaces are much closer now...
> Heading to bed though, since its 5:30am. :-)
This works, but I discovered something "funny". For all
relocs but COPY you can use scope instead of scope->dyn->symbol_scope
and it is much faster to do that. Search for "Funny" in the patch
to see what I mean. Probably I probably broke something, please let me
know if it works for you too.
I think I am done with ldso now. Has been fun and I hope to
actually use uClibc/busybox soon in a project.
Ohh, there is one thing left, double sized PLT entries, but maybe these
aren't needed in uClibc?
Sweet dreams
Jocke
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_dl_parse_lazy_relocation_information() and _dl_parse_copy_information()
so they are all consistant, allowing for future consolidation.
Trim some trailing whitespace as well.
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