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to _dl_setup_stack_chk_guard, as in glibc. SSP requires now binutils-2.16.1 and newer. Add NOT_IN_libc/IS_IN_libc. Began using -DSHARED in uClibc_main.c, there are more candidates in there. Move back dl_protect_relro to it's earlier place.
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objects at once; use :=//$</$^; use CRT_SRC/CRT_OBJ/SCRT_OBJ/CSRC/COBJ/SSRC/SOBJ/MSRC/MOBJ where no more is needed, if only CSRC is present use OBJS directly instead of COBJ; CTOR_TARGETS are created directly in lib; remove unused/unneeded parts. Hope I haven't broken too much.
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defer only for shared lib related stuff, because it is optional. Run STRIPTOOL only once. More use of /$^/$<.
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only once. Generalize all toplevel makefiles. Make sure, that libdl.so is built against libc.so and not libc.a
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be able to run apps built with 0.9.27. This also renames
__uClibc_start_main to __uClibc_main.
This compat option should be removed some time after 0.9.28 is released.
Let me know if you don't like this change.
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execution of ldso.
Added new asm for MIPS to be tested.
All arches should retest.
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have been updated
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Add UCLIBC_BUILD_NOEXECSTACK support.
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Seperate out security features into a separate menu
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-fstack-protector and -fno-stack-protector-all security
options
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as the flags for all calls to 'as'
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Here's an updated version of the patch I posted about a month ago. It
leaves -nostdinc alone, and uses -print-file-name=include instead of
-print-search-dirs to figure out where GCC's internal headers are.
Please let me know whether there are any portions of this patch you'd
like me to break into smaller pieces, to rework, or to give up trying
to get into uClibc :-) Thanks,
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- Replace all open coded dynamic handling with a function. Reduces size.
- Fold special MIPS dynamic code into the dynamic_info item.
- Add RELRO support.
- Support linking with "-z now".
- prepare for DT_RELACOUNT/DT_RELCOUNT optimization.
- Add -z now to ld.so linking, this is what ld.so does anyway so
let the linker know that.
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From Peter Mazinger.
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Mazinger implements the changes suggested by me on the uclibc list.
On Tuesday 28 September 2004 02:24 pm, Erik Andersen wrote:
> What I think should be done is
>
> *) Someone that cares about USE_CACHE should fix that option
> up to be sure it works, and give it a proper config entry
> in extra/Configs/Config.in, and rename it to something
> more appropriate such as LDSO_CACHE_SUPPORT.
>
> *) When LDSO_CACHE_SUPPORT=n, UCLIBC_RUNTIME_PREFIX /usr/X11R6/lib
> should be included in the default library search path in
> dl-elf.c, ldd, and ldconfig.
>
> *) When LDSO_CACHE_SUPPORT=y, UCLIBC_RUNTIME_PREFIX /usr/X11R6/lib
> should be excluded from the default library search path in
> dl-elf.c, ldd, and ldconfig, and those wishing to include
> X11 stuff should add that into /etc/ld.so.conf and re-run
> ldconfig.
>
> *) At present, LDSO_CONF and LDSO_CACHE use the same names
> and same structure as glibc. This precludes
> LDSO_CACHE_SUPPORT being uses in any sane fashion on a
> dial glibc and uClibc system. Just as it was necessary
> for use to use a different name for 'libuClibc' rather
> than 'libc', and 'ld-uClibc.so.0' rather than
> 'ld-linux.so.2' it seems that these configuration files
> really ought to be given different names.
>
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Now all functions and vaiables can be made static to reduce relocs.
Basicly, all variables should be merged into one struct variable
and then export that struct. Exported functions should be exported
as functions pointers in the above struct. This will reduce the
number of relocs inside ldso to a handful.
Add -Bsymbolic to linker for ldso. This will resolve all functions
(all JMP_SLOT goes away) and the remaining relocs are transformed into
RELATIVE relocs.
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in libdl, the XXFLAGS is set incorrectly if DODEBUG=y ... it has 'I.' added to
it instead of '-I.' ... this of course pisses of gcc :)
find attached a patch that cleans up the XXFLAGS setting so as to minimize
this kind of thing ... when asked, mjn3 said it was a kosher idea ;)
and later writes:
hmm it seems ldso also utilizes USE_CACHE in the code (but LIBRARY_CACHE never
propogates down to the Makefiles)
so the fix is to add $(LIBRARY_CACHE) while setting $(XXFLAGS)
Applied with minor fixes and also fixed up ldso/Makefile to match
libdl/Makefile.
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rather than _dl_malloc, fprintf rather than _dl_printf, etc.
-Erik
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since gdb can't do anything for us.
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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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inclusion will cause the loader to crash when jumping to the application.
The reason is due to the START macro having a "leave" instruction included
to fixup the stack before starting the app.
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which should simplify enabling arbitrary architectures.
-Erik
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ln.patch:
* Define $(LN) as ln in Rules.mak.
* Change all occurrences of ln into $(LN).
* Change all constructs like (cd path && ln -sf foo/file file)
into $(LN) -sf foo/file path/file. The latter construct is
already used in a number of places so it should not be
an additional compatibility problem.
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rm.patch:
* Define $(RM) as rm -f in Rules.mak and test/Rules.mak
(this is the same definition as gmake uses by default).
* Change all occurrences of rm and rm -f into $(RM).
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install.patch:
* Define $(INSTALL) as install in Rules.mak.
* Change all occurrences of install into $(INSTALL).
* Change all occurrences of mkdir -p into $(INSTALL) -d.
install -d is already used in a number of places so
this should not be an additional compatibility problem.
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