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2010-11-28Merge commit 'origin/master' into prelinkCarmelo Amoroso
Conflicts: ldso/include/dl-hash.h Signed-off-by: Carmelo Amoroso <carmelo.amoroso@st.com>
2010-11-24Revert "ldso: silence warning about unused tls var if !tls"Bernhard Reutner-Fischer
This reverts commit 23fa805150d573a913cad69d34c06f3b2ce54270. Signed-off-by: Bernhard Reutner-Fischer <rep.dot.nop@gmail.com>
2010-11-24ldso: silence warning about unused tls var if !tlsBernhard Reutner-Fischer
Signed-off-by: Bernhard Reutner-Fischer <rep.dot.nop@gmail.com>
2010-11-02ldso/include/dl-hash.h: suppress compiler warning. no code changesDenys Vlasenko
The warning was repeated for every .c file which is including this header: ./ldso/include/dl-hash.h: In function '_dl_find_hash': ./ldso/include/dl-hash.h:150: warning: unused parameter 'tpntp' Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
2010-10-11ldso: Extend prelink support for all other achitecturesFilippo Arcidiacono
Update Arch specific part of the dynamic linker to the latest cahnges required by prelink: - Use _dl_loaded_modules->scope as global symbol scope - Pass the sym argument (or NULL) to the _dl_find_hash - Update _dl_parse, _dl_do_reloc, _dl_do_lazy_reloc and _dl_parse_relocation_information to reflect the change of the scope argument's type - Add the call to _dl_debug_lookup used for trace prelinking. Signed-off-by: Filippo Arcidiacono <filippo.arcidiacono@st.com> Signed-off-by: Carmelo Amoroso <carmelo.amoroso@st.com>
2010-09-24Merge commit 'origin/master' into prelinkCarmelo Amoroso
Conflicts: ldso/ldso/sh/elfinterp.c Signed-off-by: Carmelo Amoroso <carmelo.amoroso@st.com>
2010-09-24ldso_sh: add support for protected symbols to SHSalvatore Cro
Protected symbols should not be overridden by symbols from other modules. Such symbols are exported i.e. globally visible, but references from whithin defining modules are satisfied locally. Signed-off-by: Salvatore Cro <salvatore.cro@st.com> Signed-off-by: Carmelo Amoroso <carmelo.amoroso@st.com>
2010-09-17ldso: Fix loadaddr and mappaddr when prelink support is enabled.Filippo Arcidiacono
Fixed loadaddr and mappaddr fields to correctly work when prelink support is enabled. - loadaddr is an offset relative to the first loadable segment. - mapaddr is the address where the object has been mapped in memory. Non PIC library detection fixed too. Signed-off-by: Filippo Arcidiacono <filippo.arcidiacono@st.com> Signed-off-by: Carmelo Amoroso <carmelo.amoroso@st.com>
2010-09-17ldso: Add runtime prelink supportFilippo Arcidiacono
Added runtime prelink support to be able to run a prelinked application; at process startup only the conflicts will be relocated. This speed up the startup time. Signed-off-by: Filippo Arcidiacono <filippo.arcidiacono@st.com> Signed-off-by: Carmelo Amoroso <carmelo.amoroso@st.com>
2010-09-17ldso: Do not add the ld.so at the end of the loaded modules listFilippo Arcidiacono
The dynamic linker was included indifferently at the end of the loaded modules list. In order to be used with prelink, it is required to included the ld.so in the local scope of each shared libraries that depends directly on it. Also it is included in the global scope at the first occurrence. Signed-off-by: Filippo Arcidiacono <filippo.arcidiacono@st.com> Signed-off-by: Carmelo Amoroso <carmelo.amoroso@st.com>
2010-09-17ldso: Add support for LD_WARN and LD_TRACE_PRELINKINGFilippo Arcidiacono
Added support for the following tracing capabilities: - LD_WARN to warn about undefined symbols during the lookup stage. - LD_TRACE_PRELINKING to trace the needed libraries of the object that we are prelinking. Signed-off-by: Filippo Arcidiacono <filippo.arcidiacono@st.com> Signed-off-by: Carmelo Amoroso <carmelo.amoroso@st.com>
2010-09-17ldso: Rework global scope handling and symbol lookup mechanismFilippo Arcidiacono
Global symbol scope is implemented as a linked list of local scope, that dynamically grows and shrinks when dlopen/ dlclose are called. Each local scope is implemented as an array of pointer to struct elf_resolve. This will help to detect conflict when LD_TRACE_PRELINKING option will be implemented. Signed-off-by: Filippo Arcidiacono <filippo.arcidiacono@st.com> Signed-off-by: Carmelo Amoroso <carmelo.amoroso@st.com>
2010-09-17ldso: Add implementation of ld.so standalone executionFilippo Arcidiacono
The dynamic linker can be run either indirectly through running some dynamically linked program or library (in which case no command line options to the dynamic linker can be passed and, in the ELF case, the dynamic linker which is stored in the .interp section of the program is executed) or directly by running: /lib/ld-uClibc.so.* [OPTIONS] [PROGRAM [ARGUMENTS]] Stand-alone execution is a prerequisite for adding prelink capabilities to uClibc dynamic linker, as well useful for testing an updated version of the dynamic linker without breaking the whole system. Currently supported option: --library-path PATH use given PATH instead of content of the environment variable LD_LIBRARY_PATH (Mandatory for prelinking) Not supported options: --list list all dependencies and how they are resolved --verify verify that given object really is a dynamically linked object we can handle --inhibit-rpath LIST ignore RUNPATH and RPATH information in object names in LIST This feature can be enabled by setting LDSO_STANDALONE_SUPPORT=y Signed-off-by: Filippo Arcidiacono <filippo.arcidiacono@st.com> Signed-off-by: Carmelo Amoroso <carmelo.amoroso@st.com>
2010-09-15ldso: Do not adjust dynamic section entries unnecessarilyFilippo Arcidiacono
Signed-off-by: Filippo Arcidiacono <filippo.arcidiacono@st.com> Signed-off-by: Carmelo Amoroso <carmelo.amoroso@st.com>
2010-09-07ldso: Fix compilation for x86_64 without TLS support.Will Newton
Add an #ifdef to avoid using TLS structures when TLS is not enabled. Signed-off-by: Will Newton <will.newton@imgtec.com> Signed-off-by: Carmelo Amoroso <carmelo.amoroso@st.com>
2010-07-27silence warning about incompatible types with _dl_init_static_tlsBernhard Reutner-Fischer
Signed-off-by: Bernhard Reutner-Fischer <rep.dot.nop@gmail.com>
2010-07-26ldso: Fix DL_BOOT_COMPUTE_DYN macroFilippo Arcidiacono
Signed-off-by: Filippo Arcidiacono <filippo.arcidiacono@st.com> Signed-off-by: Carmelo Amoroso <carmelo.amoroso@st.com>
2010-07-21ldso/arm: Correct protected symbol resolutionKhem Raj
* Protected symbols should not be overridden with symbols from other modules. Signed-off-by: Khem Raj <raj.khem@gmail.com>
2010-07-19ldso/mips: pltgot should array not address of array to dynamic info.Khem Raj
* This change was introduced in commit 9381d622e2411a35a5fd73a5a573eb269e2dd9c9 which rendered uclibc not booting on mips targets. Restoring it makes it work again. Signed-off-by: Khem Raj <raj.khem@gmail.com>
2010-07-06nptl: fix buildsysBernhard Reutner-Fischer
Now automatically picks the correct (arch and subarch specific) impls in favour of generic impls. make O=/tmp/objs PREFIX=/my/sysroot -j works now as expected (both out-of-tree as well as parallel-safe). Signed-off-by: Bernhard Reutner-Fischer <rep.dot.nop@gmail.com>
2010-06-21get rid of needless c99 constructAustin Foxley
Signed-off-by: Austin Foxley <austinf@cetoncorp.com>
2010-06-02ldso/mips: Fix relocation parsing so that they work on both mips32/mips64Khem Raj
Signed-off-by: Khem Raj <raj.khem@gmail.com> Signed-off-by: Rob Landley <rob@landley.net>
2010-05-09powerpc: Add TLS and NPTL supportKhem Raj
Signed-off-by: Khem Raj <raj.khem@gmail.com> Signed-off-by: Bernhard Reutner-Fischer <rep.dot.nop@gmail.com>
2010-05-05ldso: fix x86_64 R_X86_64_TPOFF64 and R_X86_64_DTPOFF64 relocationsRoman I Khimov
R_X86_64_TPOFF64 revealed by trivial testcase: =================================================================== #include <stdio.h> #include <errno.h> int main() { void *a = &errno; printf("errno addr: %llx\n", a); __asm__("movq errno@gottpoff(%%rip), %0;\n" "add %%fs:0x0,%0;" : "=r"(a) ); printf("got errno addr: %llx\n", a); return 0; } =================================================================== The addresses application got with R_X86_64_TPOFF64 was different than the once libc internal __errno_location returned. R_X86_64_DTPOFF64 testcase is even simpler than that: =================================================================== #include <stdio.h> #include <errno.h> #include <netdb.h> #undef h_errno extern __thread int h_errno; int main() { printf("h_errno addr: %llx\n", &h_errno); printf("__h_errno_location addr: %llx\n", __h_errno_location()); return 0; } =================================================================== but needs to be linked with "-lpthread". This way we've got h_errno relocation via R_X86_64_TPOFF64 in application and h_errno relocation via R_X86_64_DTPOFF64 in libpthread which has its own __h_errno_location() (probably we can kill it later?). And addresses were different again. The problem is that both relocations resolve symbols in external modules and thus should use symbol_addr instead of sym->st_value. Signed-off-by: Roman I Khimov <khimov@altell.ru> Signed-off-by: Austin Foxley <austinf@cetoncorp.com>
2010-04-28include dlfcn.h in ldso.h to get RTLD_NODELETE definitionAustin Foxley
Signed-off-by: Austin Foxley <austinf@cetoncorp.com>
2010-04-22ldso: support RTLD_NODELETE and DF_1_NODELETETimo Teräs
Honor the nodelete flags so we don't delete shared library if it's sticky. This is useful for libpthread if it gets pulled in by a dlopen'ed library. Signed-off-by: Timo Teräs <timo.teras@iki.fi> Signed-off-by: Austin Foxley <austinf@cetoncorp.com>
2010-04-22nptl: proper soname handlingNatanael Copa
Since sublevel releases are not ABI compatible we need to adjust the soname to include the sublevel version. This makes it possible to install ABI incompatible versions of the library side by side so clean upgrades are possible. Signed-off-by: Natanael Copa <natanael.copa@gmail.com> Signed-off-by: Austin Foxley <austinf@cetoncorp.com>
2010-04-16ldso/i386: support protected symbolsJoakim Tjernlund
Make sure protected symbols are not overridden by other modules. Signed-off-by: Joakim Tjernlund <joakim.tjernlund@transmode.se> Signed-off-by: Timo Teräs <timo.teras@iki.fi> Signed-off-by: Austin Foxley <austinf@cetoncorp.com>
2010-04-14Merge commit 'origin/master' into nptlAustin Foxley
Signed-off-by: Austin Foxley <austinf@cetoncorp.com>
2010-04-14ldso: Add config option for controlling LD_PRELOADCarmelo AMOROSO
On hardened system it could be useful to disable the use of LD_PRELOAD environment variable for preloading shared objects before the system libraries. So this patch add a config option, LDSO_PRELOAD_ENV_SUPPORT, to control this behaviour. It is enabled by default. Signed-off-by: Carmelo Amoroso <carmelo.amoroso@st.com> Signed-off-by: Bernhard Reutner-Fischer <rep.dot.nop@gmail.com>
2010-04-12silence debug warningBernhard Reutner-Fischer
variable 'tmp' set but not used Signed-off-by: Bernhard Reutner-Fischer <rep.dot.nop@gmail.com>
2010-04-12whitespace cleanupBernhard Reutner-Fischer
Signed-off-by: Bernhard Reutner-Fischer <rep.dot.nop@gmail.com>
2010-04-12Merge remote branch 'origin/master' into nptlAustin Foxley
Conflicts: libc/unistd/confstr.c Signed-off-by: Austin Foxley <austinf@cetoncorp.com>
2010-04-12silence warning about undefined preprocessor tokenBernhard Reutner-Fischer
Signed-off-by: Bernhard Reutner-Fischer <rep.dot.nop@gmail.com>
2010-04-11ldso_sh: Provide only one definition for elf_machine_type_classCarmelo Amoroso
It doesn't need to provide different definition of elf_machine_type_class macro depending on TLS support. It also fixes build for sh architecture when thread support is off: CC ldso/ldso/ldso.oS In file included from ./ldso/ldso/sh/dl-sysdep.h:9, from ./ldso/include/dl-string.h:11, from ./ldso/include/ldso.h:40, from ldso/ldso/ldso.c:33: ./include/tls.h:6:22: error: tls.h: No such file or directory make: *** [ldso/ldso/ldso.oS] Error 1 Signed-off-by: Carmelo Amoroso <carmelo.amoroso@st.com>
2010-04-02Merge commit 'origin/master' into nptlAustin Foxley
Conflicts: Makefile.in extra/Configs/Config.in libc/sysdeps/linux/common/bits/kernel-features.h libc/sysdeps/linux/common/poll.c libc/sysdeps/linux/common/sysdep.h libc/sysdeps/linux/sh/sysdep.h Signed-off-by: Austin Foxley <austinf@cetoncorp.com>
2010-03-25prettify make cleanBernhard Reutner-Fischer
Signed-off-by: Bernhard Reutner-Fischer <rep.dot.nop@gmail.com>
2010-02-19x86_64: finish up tls reloc support in ldsoAustin Foxley
Signed-off-by: Austin Foxley <austinf@cetoncorp.com>
2010-02-17Add missing libgcc_s.h header.Khem Raj
* Do not include tls.h in aeabi_read_tp.S. Its not needed. Signed-off-by: Khem Raj <raj.khem@gmail.com>
2010-02-11ldso: fix USE_TLS checkAustin Foxley
this was causing tls symbols to leak into non-tls builds Signed-off-by: Austin Foxley <austinf@cetoncorp.com>
2010-02-05Merge commit 'origin/master' into nptlAustin Foxley
Signed-off-by: Austin Foxley <austinf@cetoncorp.com>
2010-02-05ldso: add missing prototypesBernhard Reutner-Fischer
Signed-off-by: Bernhard Reutner-Fischer <rep.dot.nop@gmail.com>
2010-01-25mips/ldso: Check for TLS relocation in elf_machine_type_class.Khem Raj
* Store the symbol adress received from _dl_find_hash and do not recompute it. Signed-off-by: Khem Raj <raj.khem@gmail.com>
2010-01-25mips/ldso: Check for TLS relocation in elf_machine_type_class.Khem Raj
* Store the symbol adress received from _dl_find_hash and do not recompute it. Signed-off-by: Khem Raj <raj.khem@gmail.com>
2010-01-21ldso: tweak shadow warning with preload file supportBernhard Reutner-Fischer
The stat buffer is already declared at the top of the function. Signed-off-by: Bernhard Reutner-Fischer <rep.dot.nop@gmail.com> (cherry picked from commit 6140a2a7175a796a7c06119f036357db87a1b865) Signed-off-by: Carmelo Amoroso <carmelo.amoroso@st.com>
2010-01-21mips/nptl: Pass correct parameters to dl_find_hash when resolving TLS ↵Khem Raj
relocations. Make use of macros from sys/asm.h in crt1.S These two changes are needed for mips nptl to boot once again. Signed-off-by: Khem Raj <raj.khem@gmail.com> (cherry picked from commit 9c343fd4030dcd7a52616f365893177dded50346) Signed-off-by: Carmelo Amoroso <carmelo.amoroso@st.com>
2010-01-21ldso: tweak shadow warning with preload file supportBernhard Reutner-Fischer
The stat buffer is already declared at the top of the function. Signed-off-by: Bernhard Reutner-Fischer <rep.dot.nop@gmail.com>
2010-01-14mips/nptl: Pass correct parameters to dl_find_hash when resolving TLS ↵Khem Raj
relocations. Make use of macros from sys/asm.h in crt1.S These two changes are needed for mips nptl to boot once again. Signed-off-by: Khem Raj <raj.khem@gmail.com>
2009-12-23Merge remote branch 'origin/master' into nptlAustin Foxley
Signed-off-by: Austin Foxley <austinf@cetoncorp.com>
2009-12-23Make _dl_dprintf buf non-static to avoid multithreading bugs.Chris Metcalf
Signed-off-by: Chris Metcalf <cmetcalf@tilera.com> Signed-off-by: Austin Foxley <austinf@cetoncorp.com>
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