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Like for other FDPIC targets, add defined(__FDPIC__) where needed.
* include/link.h: Include bits/elf-fdpic.h if __FDPIC__ is defined.
(link_map): Use elf32_fdpic_loadaddr if __FDPIC__ is defined.
(dl_phdr_info): Likewise.
* ldso/include/dl-elf.h (__dl_parse_dynamic_info): Support
__FDPIC__.
* ldso/include/dl-hash.h (elf_resolve): Add funcdesc_ht field if
__FDPIC__ is defined.
* ldso/ldso/dl-hash.c (_dl_find_hash): Support __FDPIC__.
* libc/misc/elf/dl-iterate-phdr.c (dl_iterate_phdr): Support __FDPIC__.
Signed-off-by: Mickaël Guêné <mickael.guene@st.com>
Signed-off-by: Christophe Lyon <christophe.lyon@st.com>
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Previously, DL_OPENED flag was set in libdl only and never used.
Set it centralized in _dl_load_elf_shared_library() & use it in
both ld.so and libdl.
Additionally, rename it to DL_OPENED2 for clarity.
Signed-off-by: Leonid Lisovskiy <lly.dev@gmail.com>
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The FR-V port is really broken, and I have no emulator
or hardware for this platform. I tried to get some hardware
from RedHat, who made the FR-V port initially. Unfortunately
Fujitsi didn't agreed to sent me some of their unused spare
hardware lying @RedHat. As I invested some time to get stuff compiled,
I decided to add the code and may be anytime later I can gain
access to some emulator or hardware.
GDB simulator for FR-V doesn't support booting Linux AFAIK.
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Changes from:
https://github.com/foss-xtensa/uClibc/commits/xtensa_nptl
Author: Chris Zankel <chris@zankel.net>
Author: Baruch Siach <baruch@tkos.co.il>
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Signed-off-by: Peter S. Mazinger <ps.m@gmx.net>
Signed-off-by: Bernhard Reutner-Fischer <rep.dot.nop@gmail.com>
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Signed-off-by: Peter S. Mazinger <ps.m@gmx.net>
Signed-off-by: Bernhard Reutner-Fischer <rep.dot.nop@gmail.com>
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The existing DSBT support relies on the kernel to provide DSBT info
as part of the load maps passed to user space. The problem with this
approach is that the DSBT info is in the dynamic section, so the
kernel must access a userspace mapping of the dynamic section (or
separately read a copy for the kernel) in order to retrieve the
information needed by userspace.
This patch reworks the DSBT support to remove the reliance on DSBT
info coming from the kernel. Instead, ldso reads the info itself from
the dynamic section. One other benefit of this is that it allows the
existing kernel FDPIC loader to also load DSBT binaries.
Signed-off-by: Mark Salter <msalter@redhat.com>
Signed-off-by: Bernhard Reutner-Fischer <rep.dot.nop@gmail.com>
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* origin/master:
bump version to 0.9.32-rc2-git
release 0.9.32-rc2
nptl: Fix __USER_LABEL_PREFIX__ concatenatio
nptl: fix start_thread() for _STACK_GROWS_UP
ldso: get rid of _dl_lookup_hash
Add protected symbols support for all architectures
Revert "ldso/arm: Correct protected symbol resolution"
Revert "ldso_sh: add support for protected symbols to SH"
Revert "ldso/i386: support protected symbols"
cris: Fix build issues
syslog: fix 'everyone logs with user facility'
__psfs_parse_spec: always use long int for %p
buildsys: headers target should not depend on sysnum.h
buildsys: fix make release target
nptl: get rid of the last preprocessor warning when __ASSUME_TGKILL is not defined
remove uClibc_ctype.h if !LOCALE
Revert "Makefile.in: Add header to 'all' target"
nptl: get rid of preprocessor warning when __ASSUME_TGKILL is not defined
Conflicts:
ldso/include/dl-hash.h
ldso/ldso/arm/elfinterp.c
ldso/ldso/avr32/elfinterp.c
ldso/ldso/bfin/elfinterp.c
ldso/ldso/cris/elfinterp.c
ldso/ldso/dl-hash.c
ldso/ldso/i386/elfinterp.c
ldso/ldso/m68k/elfinterp.c
ldso/ldso/mips/elfinterp.c
ldso/ldso/powerpc/elfinterp.c
ldso/ldso/sh/elfinterp.c
ldso/ldso/sh64/elfinterp.c
ldso/ldso/sparc/elfinterp.c
ldso/ldso/x86_64/elfinterp.c
ldso/ldso/xtensa/elfinterp.c
ldso/libdl/libdl.c
Signed-off-by: Carmelo Amoroso <carmelo.amoroso@st.com>
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Now _dl_find_hash and _dl_lookup_hash are exactly the same, we can get rid
of the _dl_lookup_hash, reverting the _dl_find_hash from a wrapper of
_dl_lookup_hash to its original role.
Signed-off-by: Carmelo Amoroso <carmelo.amoroso@st.com>
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Protected symbols are global symbols for which interposition is not allowed.
We manage them in generic _dl_lookup_hash function. To handle protected symbols
we need to get a reference to the module that defines the symbol itself.
So we pass a new parameter 'struct symbol_ref' to the __dl_lookup_hash
that is defined as below:
struct symbol_ref {
const ElfW(Sym) *sym;
struct elf_resolve *tpnt;
};
The tpnt field is used as an ouput parameter and refers to the module which defines
the protected symbol.
Further it can be used as output parameter for TLS relocations and FDPIC case.
The sym field is instead used as an input parameter to detect the visibility of the
symbol we are looking-up.
In this way we get rid of different signatures for _dl_lookup_hash, allowing to remove
the _dl_find_hash wrapper.
This new structure is also suitable for prelink integration.
Signed-off-by: Salvatore Cro <salvatore.cro@st.com>
Signed-off-by: Carmelo Amoroso <carmelo.amoroso@st.com>
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Conflicts:
ldso/include/dl-hash.h
Signed-off-by: Carmelo Amoroso <carmelo.amoroso@st.com>
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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>
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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>
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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>
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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>
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This patch will convert all the #ifdef USE_TLS and #if USE_TLS to
#if defined(USE_TLS) && USE_TLS.
By checking if the USE_TLS is defined before checking its value will result in
correct behavior for architectures not defining this config symbol.
Signed-off-by: Hans-Christian Egtvedt <hans-christian.egtvedt@atmel.com>
Acked-by: Carmelo AMOROSO <carmelo.amoroso@st.com>
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Signed-off-by: Mike Frysinger <vapier@gentoo.org>
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The TLS merge 534661b91c9849 introduced multiple style problems as well as
random breakage:
- missing _dl_free
- incomplete parametrization of _dl_lookup_hash
- restore FDPIC handling in _dl_lookup_hash
Signed-off-by: Mike Frysinger <vapier@gentoo.org>
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Signed-off-by: Bernhard Reutner-Fischer <rep.dot.nop@gmail.com>
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Signed-off-by: Austin Foxley <austinf@cetoncorp.com>
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Signed-off-by: Hans-Christian Egtvedt <hans-christian.egtvedt@atmel.com>
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of elf_resolve's loadaddr field for the main application.
Signed-off-by: Filippo Arcidiacono <filippo.arcidiacono@st.com>
Signed-off-by: Carmelo Amoroso <carmelo.amoroso@st.com>
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Add a hash table for function descriptors on FD-PIC targets.
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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.
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fstat64, but I am sure someone will
tell me.
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bitsize
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where possible. This will also make ldso smaller.
However the patch touches all archs and I have only tested PPC and x86.
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Andrew de Quincey, who has been most helpful getting this sorted
out, thanks. Thanks also to Peter Mazinger who did alot of testing.
Removed all traces of dl_parse_copy_information() since it is no longer used.
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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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Remove definition of _dl_parse_copy_information() for powerpc.
Remaining archs can do the same.
Make debugging output of "relocation processing: xxx" a bit more sane.
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This needs testing with apps that have complex dependencies.
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is needed if ldso should use libcs malloc whenever possible.
Fix RTLD_LAZY propagation to RTLD_NOW relocation when requested by
libdl.
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