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2004-02-18Alexandre Oliva writes:Eric Andersen
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.
2004-02-17Fixup support for gcc 2.95Eric Andersen
2004-02-17Seperate out the startup stuff from the non-startup stuff.Eric Andersen
Begin converting some big ugly macros to inline functions instead
2004-02-17Kill off an arm specific hack, that fostered three other arch specificEric Andersen
hacks. Just check for the elf magic string one byte at a time....
2004-02-17When doing _dl_mmap to obtain a bit of anonymous memory, use a much moreEric Andersen
sensible -1 fd, rather than pretending to work off of fd 0, which makes absolutely no sense.
2004-02-17Do not duplicate stuff from ldso.hEric Andersen
2004-02-17Provide the ldso syscalls and string funcs earlier in the listEric Andersen
2004-02-14No point in including debug info for ldso. It isn't helpful to do soEric Andersen
since gdb can't do anything for us.
2004-02-14Atsushi Nemoto writes:Eric Andersen
Also, if you are to enable SUPPORT_LD_DEBUG on MIPS, I think this patch is needed too.
2004-02-14Fix this as should have been done a long time ago...Manuel Novoa III
2004-02-14Give gcc branch prediction some hits on obviously unlikely branchesEric Andersen
2004-02-14Joakim Tjernlund writes:Eric Andersen
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 ...
2004-02-12Based on a problem report and patch from Florian Schirmer, fix a compileEric Andersen
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.
2004-02-10Eliminate the PIE support option, and simply support that all the timeEric Andersen
2004-02-10Fix function prototype to match the official ELF standard hash functionEric Andersen
2004-02-10Rework file naming, aiming for at least a vague level of consistancyEric Andersen
2004-02-10oops, manditory forgotten patchEric Andersen
2004-02-10Fixup the definition of _dl_open, and move some bits back where they were,Eric Andersen
till I properly finish the next step in my evil plan.
2004-02-08Move _dl_printf and _dl_malloc to ldso, which is a more sensibleEric Andersen
location for this stuff
2004-02-08Cleanup whitespace and formattingEric Andersen
2004-02-08Add some permissions when creating the logfileEric Andersen
2004-02-07Thanks to Joakim's recent paches, we can now remove the FIXMEEric Andersen
2004-02-07Restore the library entry point so it works. It does haveEric Andersen
to be arch specific to work properly.
2004-02-07Joakim Tjernlund writes:Eric Andersen
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.
2004-02-07Remove unneeded forward declarationEric Andersen
2004-02-07Split off the stuff that cannot use function into its own file,Eric Andersen
to make it easier to treat it specially while not bothering the rest of the code with the same constraints.
2004-02-07Step one, begin shuffling things around a bitEric Andersen
2004-02-07Yet more consistancy fixupsEric Andersen
2004-02-07Use unsigned char * pointersEric Andersen
2004-02-06Trim trailing whitespaceEric Andersen
2004-02-06Remove trailing whitespaceEric Andersen
2004-02-05Fixup a badly merged updateEric Andersen
-Erik
2004-02-04Use a static const char array for static stringsEric Andersen
2004-02-01Jakub Bogusz writes:Eric Andersen
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.
2004-01-31Revert to scope as used by original code for now, just in case.Eric Andersen
I still don't have a good handle on why and when the different scope values should be used.
2004-01-30Joakim Tjernlund writes:Eric Andersen
> 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
2004-01-29Modify interfaces for _dl_parse_relocation_information()Eric Andersen
_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.
2004-01-29Scrub up use of ELF_USES_RELOCA and eliminte some unsightly ifdefsEric Andersen
2004-01-29Joakim Tjernlund writes:Eric Andersen
Here is the cleaned up laze reloc patch. Summary: - Minor cleanup. - disable the "if (finaladdr <= 0x01fffffc || finaladdr >= 0xfe000000)" test since it almost never triggered. - Optimized the lazy relocs handling. Would be great if you could commit ASAP. Jocke
2004-01-29Eliminate separate passes for _dl_copy_fixups() and _dl_fixup(), andEric Andersen
do both operations in a single pass.
2004-01-29Fixup silly typoEric Andersen
2004-01-29Patch from Joakim Tjernlund:Eric Andersen
Removed R_PPC_NONE and R_PPC_REL24 as these does not seem to be used. Corrected R_PPC_ADDR32 and R_PPC_JMP_SLOT
2004-01-27Patch from Joakim Tjernlund to get rid of an annoying warning.Eric Andersen
2004-01-24Joakim Tjernlund writes:Eric Andersen
Hi again I have done some serious clenup of powerpc/elfinterp.c - Make it look more like glibc. - Performance modifictions. - Fixed a few bugs in _dl_do_reloc(). These seem not to have affected anything, but this how glibc do it. Jocke
2004-01-20As noted by Doru Petrescu, there was a spurious line that was usingEric Andersen
_dl_debug_addr prior to checking if it was NULL.
2004-01-20Paul Mundt writes:Eric Andersen
The current behavior of the powerpc boot1_arch.h seems somewhat broken. Currently room is made on the stack pointer for the link register, but the link register is never actually pushed onto it. glibc bears the following comments: /* Call _dl_start with one parameter pointing at argc */ mr r3,r1 /* (we have to frob the stack pointer a bit to allow room for _dl_start to save the link register). */ followed by the -16 add to r1. Despite the fact that r1 is modified, the link register is never actually pushed onto r1, thus the adjustment is completely superfluous. There's two possible fixes for this, either saving the link register in the way that glibc does, or getting rid of the r1 adjustment. As I'm not sure if saving the link register will actually break the _dl_boot2 callin, both options will probably want to be played with. The following bit of inline assembly in the attached patch builds cleanly for me with gcc 3.3 on darwin, but I'm not able to test it any further beyond that.
2004-01-20Joakim Tjernlund writes:Eric Andersen
> Is there anything I can do/provide that would assist in the solving of > this problem on PowerPC? I'm still concerned about my lack of flash space... Try this path. It fixes the recent ldso problems for me on my mpc860 board. You should be able to use ldso without the dcbx patch to the kernel now. Please report back. Jocke
2004-01-16We need to link with libgcc.a when creating shared libs, in order toManuel Novoa III
avoid problems 'hidden symbol' problems. Also handle -lfloat for the soft-float arm case.
2004-01-16Make sure we remove -fomit-frame-pointer from the ldso build. It'sDavid McCullough
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.
2004-01-06Some badly behaved arches fail to provide a PAGE_SIZE defineEric Andersen
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