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2008-01-05whitespace only: fix indentationMike Frysinger
2007-12-04Blackfin FD-PIC patch 6/6.Bernd Schmidt
These are mostly the changes necessary to deal with loading the libraries into memory. A couple new target macros are defined for this purpose, and the code in dl-elf.c is modified to deal with nommu systems.
2007-12-03Fix a few warnings introduced by my previous commits.Bernd Schmidt
2007-12-03Blackfin FD-PIC patches 5/6.Bernd Schmidt
A couple more target macros for ld.so to deal with FD-PIC support. We need special code to compute the initial got and dpnt, and we need to pass extra arguments to _dl_get_ready_to_run.
2007-12-03Blackfin FD-PIC patch 4/6.Bernd Schmidt
Add a hash table for function descriptors on FD-PIC targets.
2007-12-03Blackfin FD-PIC patch 3/6.Bernd Schmidt
Change _dl_find_hash to _dl_lookup_hash, as on the NPTL branch. _dl_find_hash is now a wrapper function around it; unlike on the NPTL branch, it retains the old interface so that not all callers need to be changed. _dl_lookup_hash can optionally give its caller a pointer to the module where the symbol was found. Introduce ELF_RTYPE_CLASS_DLSYM for lookups from libdl. Spelling fixes in the Blackfin port, since Alex Oliva's original version of these patches used _dl_find_hash_mod as the name of the function rather than _dl_lookup_hash.
2007-12-03Blackfin FD-PIC patch 2/6.Bernd Schmidt
Add the necessary changes in ld.so and libdl to deal with targets that prepend an underscore to symbol names.
2007-12-03Blackfin FD-PIC patch 1/6.Bernd Schmidt
Add a new function _dl_free. In _dl_malloc, ensure we always get back a full page from mmap. Reset _dl_malloc_function and _dl_free_function when libdl is initialized.
2007-12-03Some versions of gcc consider inline merely a hint. AVR32 depends on theCarmelo Amoroso
system calls actually being inlined, so AVR32 needs to use __always_inline instead of just inline. The attached patch changes this for the system calls. Signed-off-by: Hans-Christian Egtvedt <hcegtvedt@atmel.com>
2007-11-28Fix merging error: a macro was renamed.Bernd Schmidt
2007-11-23Change test for a define that got renamed a while ago.Bernd Schmidt
2007-11-16If uClibc's ld.so encounters text relocations in a shared library - one Carmelo Amoroso
containing an object built without -fpic/-fPIC - then: * If __FORCE_SHAREABLE_TEXT_SEGMENTS__, then it gives an error "Can't modify %s's text section. Use GCC option -fPIC for shared objects, please.\n" and exits. * Otherwise, it makes the library's pages writable and relocates it. If it encounters text relocations in a position-independent executable - one containing an object built without -fpie/-fPIE/-fpic/-fPIC - then: * If __FORCE_SHAREABLE_TEXT_SEGMENTS__, it does nothing about making the pages writable, leading to a crash. * Otherwise, the loop to make the pages writable uses the same variable ppnt as used in an outer loop, messing up that outer loop and also causing a crash. This patch fixes both cases, by giving an error if __FORCE_SHAREABLE_TEXT_SEGMENTS__ and saving and restoring ppnt otherwise. Tested in both cases on ARM EABI. Joseph S. Myers joseph@codesourcery.com
2007-11-16Added AVR32 support to uClibc. Signed-off-by: Hans-Christian Egtvedt ↵Carmelo Amoroso
<hcegtvedt@atmel.com>
2007-11-09Define _dl_assert in libdl only if __DOASSERTS__ is defined. Thanks to Peter ↵Carmelo Amoroso
Mazinger
2007-11-07Added support for GNU hash style into dynamic linkerCarmelo Amoroso
2007-10-21Handle STT_COMMON symbols too. Following binutils releaseJoakim Tjernlund
will set the type of common symbols to STT_COMMON instead of STT_OBJECTS, so the dynamic linker needs to handle this type os symbols too. Same changes have been added to glibc (See: bugzilla #5104). This patch ensures the uclibc will work with later bintuils. Signed-off-by: Carmelo Amoroso <carmelo.amoroso@st.com>
2007-10-13- use the compiler-driver instead of the linkerBernhard Reutner-Fischer
- adjust setting flags accordingly to use (hardcoded, see below) -Wl, Potential improvements: *) --warn-unresolved-symbols should perhaps be used for all libs *) eventually rename LDFLAGS to CC_LDFLAGS *) probe for compiler driver's notion of flag to use for passing in linker flags (i.e. don't hardcode "-Wl,")
2007-10-08Do string comparisos as late as possible during symbol lookup.Mike Frysinger
Signed-off-by: Carmelo Amoroso <carmelo.amoroso@st.com>
2007-09-28Make sure that the DSO has an hash table into its elf, otherwise skipMike Frysinger
the lookup over next DSO. Signed-off-by: Carmelo Amoroso <carmelo.amoroso@st.com>
2007-09-15Blue Swirl writes:Mike Frysinger
I got the library to compile with the attached patches, though dynamic loader crashes early. In buildroot I changed the architecture name by hand from sparc to sparc64, otherwise the compiler produced 32-bit files with V9 (64-bit) instructions. This configuration is not supported by QEMU, so I aimed for pure 64-bit. I think Sparc64 option needs to be added to buildroot. The _Qp_ ops seem to be required by the ABI. This and setjmp patches are just hacks to get the compilation further. The _Qp_ ops can be found in glibc, would it be OK to use those? V9 assembler requires declarations for global register use. The mem* functions in sparc32 directory did not work. They are actually used only by the hybrid 32-bit + V9 CPU configuration.
2007-07-29Remove stray code alignment (.align 16 and .align 4 directives)Denis Vlasenko
from i386 and x86_64.
2007-07-18Apply patch as submitted by Blue Smurfy Swirly <blauwirbel@gmail.com> for ↵"Steven J. Hill"
Sparc32.
2007-06-04Correct return value. Pointed out by psm.Joakim Tjernlund
2007-04-17fix ld.so.cache handling on no-mmu setupsMike Frysinger
2007-03-31Bernd Schmidt writes:Joakim Tjernlund
Currently a static libdl.a doesn't run all the constructors or destructors of the libraries it loads. I can't see a good reason for that, and it does cause aborts in the destructors it does run for things like libgcc.so on the Blackfin. Fixed with the patch below - untested in mainline, but the equivalent has been in our Blackfin tree for a while now.
2007-03-19#1273 if EXTRAVERSION is set, make sure we respect itMike Frysinger
2007-03-13Carmelo Amoroso writes:Joakim Tjernlund
I experiencied some problems while trying to debug the ld.so (sh4) in debug mode. I found that the _start code was not placed into any PT_LOAD segment causing a SIGSEV. I solved this issue explicitely placing the _start code into the .text section (see attached patch).
2007-03-13Carmelo Amoroso writes:Joakim Tjernlund
Hi All, the attached patch completes my previous patch on statically linked application calling dlopen enabling the support for LD_DEBUG. Further it fixes the missing initialization of the _dl_library_path variable. This patch has been fully tested with the uClibc-nptl branch (sh4).
2007-02-21make sure we have rtld_hidden_def(_dl_debug_state)Mike Frysinger
2007-02-17Make _dl_malloc alignment arch configurable.Joakim Tjernlund
From Atsushi Nemoto.
2007-02-16Fix dlopen for static apps.Joakim Tjernlund
From Carmelo Amoroso.
2007-02-13use /*...*/ comments rather than #... so we can preprocessMike Frysinger
2007-01-29- see if defined foo before trying to look at the value of foo (that should ↵Bernhard Reutner-Fischer
be 0 in this case. Avoids some warnings).
2007-01-28fix from Bernd Schmidt to make sure _dl_debug_state isnt optimized away and ↵Mike Frysinger
does not generate relocs
2007-01-28as pointed out by Jocke, use "2" for actual error messages and ↵Mike Frysinger
_dl_debug_file for debug messages
2007-01-26Fix libdl bug reported by Cedric Hombourger inJoakim Tjernlund
http://uclibc.org/lists/uclibc/2007-January/017165.html
2007-01-09Joseph S. Myers writes:Joakim Tjernlund
ELF symbol names are arbitrary 0-terminated sequences of bytes, and the ELF hash function is defined in the ELF specification to use unsigned char. Thus uClibc's _dl_elf_hash, using plain char, breaks when char is signed and symbol names contain bytes with the high bit set, as with GCC's ucnid-* tests. This patch fixes this problem.
2007-01-05Support SecurePLTs for PowerPC. You need a toolchain that supportsJoakim Tjernlund
config option --enable-secureplt. The assembler must also supports R_PPC_REL16* relocations. gcc 4.1.1 and binutils 2.17 is known to do this.
2006-12-06bits/kernel_stat.h is for internal uClibc use only, fix a few otherEric Andersen
minor include file issues
2006-11-21Use constant pool instead of and adr Khem Raj
instruction in unoptimized builds and thumb: thanks Paul Brook
2006-11-17Bernd Schmidt writes: [blackfin updates] add support for FDPIC and include ↵Mike Frysinger
L1 functions
2006-11-17Bernd Schmidt writes:Mike Frysinger
This reintroduces a mechanism identical to the DL_BOOT macro present in older versions of uClibc. On Blackfin and FRV, we want to pass more than one argument to _dl_start. We also want to do something special before returning, so delete the warning when the START macro is defined.
2006-11-16revert rev 16527 changes to ldso/ldso/dl-hash.cEric Andersen
2006-11-16Paul Brook writes:Eric Andersen
The patch below fixes a bug in the new ARM _ld_linux_resolve implementation. I'm don't know if/how the current implementation was tested, but it's completely broken. This patch makes the prologue and epilogue agree on how big the stack frame is, and also makes sure EABI doubleword stack alignment is preserved. Tested on arm-linux-gnueabi.
2006-11-10This change reimplements the ARM _dl_linux_resolve entry point - this isEric Andersen
called to resolve DLL PLT entries. The assembler is changed to be thumb compatible and slightly faster, the C function, _dl_linux_resolver (note the extra r) is changed to take a byte address in place of an 8 byte count (faster in caller and callee, and slightly easier to understand).
2006-11-10arm thumb:Eric Andersen
Put the call_via_rx code into each executable - call_via_ip cannot possibly work if called through the PLT! ldso requires this code too as it is not linked with the crt stuff and thumb ldso does make calls via a register. The patch puts the code into crti.S so that it is linked into every normally built application (if thumb or interworking is selected). This is only 30 extra bytes and it works - the previous code did not because nothing both implemented and exported the APIs (they were in libgcc, but not in the version script). crti.S and crtn.S is also brought up to date with GCC 3.4.4 - this is essential for thumb support because the .init and .fini sections must use arm or thumb code to match the compilation of the libraries. Note that code which pushes stuff into .init or .fini must be compiled with or without -mthumb to match the uclibc compilation - and gcc itself (which does do this) must therefore be compiled to match.
2006-11-04mips64 patch from Atsushi Nemoto:Eric Andersen
64bit MIPS ELF format tweaks. (from glibc) Elf32/ElfW convertions. asm code adjustments.
2006-10-10Make _dl_linux_resolve interworking safe. Thanks Paul BrookKhem Raj
2006-10-07fixup from Bernd Schmidt to properly document DL_ADDR_TO_FUNC_PTRMike Frysinger
2006-10-07Bernd Schmidt writes:Mike Frysinger
This introduces a new SEND_EARLY_STDERR macro that is to be used in dl-startup.c before ld.so is relocated. It is needed on Blackfin (and frv) FDPIC since we have to use special tricks to get the address of a string constant. EARLY_STDERR_SPECIAL gets defined on such a machine and prevents printing of debug strings inside the loop that relocates ld.so, since we can't decide which of the two variants to use.
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