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Signed-off-by: Austin Foxley <austinf@cetoncorp.com>
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Signed-off-by: Khem Raj <raj.khem@gmail.com>
Signed-off-by: Rob Landley <rob@landley.net>
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Signed-off-by: Khem Raj <raj.khem@gmail.com>
Signed-off-by: Bernhard Reutner-Fischer <rep.dot.nop@gmail.com>
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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>
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Signed-off-by: Austin Foxley <austinf@cetoncorp.com>
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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>
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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>
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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>
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Signed-off-by: Austin Foxley <austinf@cetoncorp.com>
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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>
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variable 'tmp' set but not used
Signed-off-by: Bernhard Reutner-Fischer <rep.dot.nop@gmail.com>
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Signed-off-by: Bernhard Reutner-Fischer <rep.dot.nop@gmail.com>
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Conflicts:
libc/unistd/confstr.c
Signed-off-by: Austin Foxley <austinf@cetoncorp.com>
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Signed-off-by: Bernhard Reutner-Fischer <rep.dot.nop@gmail.com>
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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>
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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>
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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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* Do not include tls.h in aeabi_read_tp.S. Its not needed.
Signed-off-by: Khem Raj <raj.khem@gmail.com>
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this was causing tls symbols to leak into non-tls builds
Signed-off-by: Austin Foxley <austinf@cetoncorp.com>
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Signed-off-by: Austin Foxley <austinf@cetoncorp.com>
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Signed-off-by: Bernhard Reutner-Fischer <rep.dot.nop@gmail.com>
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* Store the symbol adress received from _dl_find_hash
and do not recompute it.
Signed-off-by: Khem Raj <raj.khem@gmail.com>
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* Store the symbol adress received from _dl_find_hash
and do not recompute it.
Signed-off-by: Khem Raj <raj.khem@gmail.com>
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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>
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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>
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The stat buffer is already declared at the top of the function.
Signed-off-by: Bernhard Reutner-Fischer <rep.dot.nop@gmail.com>
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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>
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Signed-off-by: Austin Foxley <austinf@cetoncorp.com>
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Signed-off-by: Chris Metcalf <cmetcalf@tilera.com>
Signed-off-by: Austin Foxley <austinf@cetoncorp.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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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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_dl_update_slotinfo might change THREAD_DTV () (if it needs to reallocate it),
but the caller (__tls_get_addr) doesn't refetch dtv from memory, it uses its
cached copy. This may crash (if dtv[GET_ADDR_MODULE] is off the cliff, or
might read uninitialized memory and return it.
Typically dtv[GET_ADDR_MODULE].pointer.val is NULL and so __tls_get_addr
returns NULL + offset_within_PT_TLS. The next time __tls_get_addr is called
for the same library it will return correct address as _dl_update_slotinfo
won't need to be called.
Signed-off-by: Jakub Jelinek <jakub@redhat.com>
Signed-off-by: Filippo Arcidiacono <filippo.arcidiacono@st.com>
Signed-off-by: Carmelo Amoroso <carmelo.amoroso@st.com>
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Signed-off-by: Austin Foxley <austinf@cetoncorp.com>
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stack_chk_guard is on thread local storage so we need to init TLS before
we can init stack_chk_guard.
Signed-off-by: Natanael Copa <natanael.copa@gmail.com>
Signed-off-by: Austin Foxley <austinf@cetoncorp.com>
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If LDSO_SEARCH_INTERP_PATH is off then ptmp wasn't used.
Signed-off-by: Bernhard Reutner-Fischer <rep.dot.nop@gmail.com>
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Now that the kernel supports MAP_UNINITIALIZE, have the malloc places use
it to get real uninitialized memory on no-mmu systems. This avoids a lot
of normally useless overhead involved in zeroing out all of the memory
(sometimes multiple times).
Signed-off-by: Mike Frysinger <vapier@gentoo.org>
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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: Bernhard Reutner-Fischer <rep.dot.nop@gmail.com>
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Signed-off-by: Austin Foxley <austinf@cetoncorp.com>
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We already include bits/fcntl.h for some of these defines, and most of
the bits/stat.h defines are unused.
Signed-off-by: Mike Frysinger <vapier@gentoo.org>
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The interface should be straight forward now and the same for everyone.
Signed-off-by: Mike Frysinger <vapier@gentoo.org>
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This fixes build errors where common code has started using MAP_FAILED.
Signed-off-by: Mike Frysinger <vapier@gentoo.org>
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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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With TLS _dl_find_hash grew an extra param.
These archs don't have TLS reloc support yet, but they do need to
compile without it.
Signed-off-by: Austin Foxley <austinf@cetoncorp.com>
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gold does not currently implement these.
Signed-off-by: Bernhard Reutner-Fischer <rep.dot.nop@gmail.com>
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Signed-off-by: Mike Frysinger <vapier@gentoo.org>
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Signed-off-by: Mike Frysinger <vapier@gentoo.org>
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