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Signed-off-by: Waldemar Brodkorb <wbx@openadk.org>
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This matches a similar change made to glibc.
No functional changes here.
Signed-off-by: Mike Frysinger <vapier@gentoo.org>
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There's no need to export this symbol, so mark them all hidden.
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: Mike Frysinger <vapier@gentoo.org>
Signed-off-by: Bernhard Reutner-Fischer <rep.dot.nop@gmail.com>
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gcc informed me:
In file included from ldso/ldso/ldso.c:46:0:
ldso/ldso/x86_64/elfinterp.c: In function '_dl_do_lazy_reloc':
ldso/ldso/x86_64/elfinterp.c:294:6: warning:
variable 'symtab_index' set but not used [-Wunused-but-set-variable]
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: Khem Raj <raj.khem@gmail.com>
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* origin/master: (61 commits)
fts: fix warning due to old-style function definition
ldso_tls: fix compiler warning due to missing cast
resolv: fix bug in res_init with ipv6 nameservers
config: Fix passing defconfig args
buildsys: pt-initfini.s depends on uClibc_config.h
libdl: search for ELF_RTYPE_CLASS_DLSYM in dlsym()
resolv: try next server on SERVFAIL
getaddrinfo: allow numeric service without any hints
bump version to 0.9.33-git
nptl/pthread: Correct path for machine specific pt-initfini.c
ctor/dtor nptl: Fix init and fini function compilation
Rules.mak: Rearrange appending UCLIBC_EXTRA_CFLAGS to CFLAGS
ARM: remove EABI/OABI selection
ARM: detect BX availibility at build time
ARM: #include <bits/arm_asm.h> where __USE_BX__ is used
ARM: transform the EABI/OABI choice into a boolean
ARM: remove sub-arch/variants selection from menuconfig
ARM: introduce blind options to select & force THUMB mode
ARM: reorder "Use BX" option
Fix __libc_epoll_pwait compile failure on x86
...
Conflicts:
ldso/libdl/libdl.c
Signed-off-by: Carmelo Amoroso <carmelo.amoroso@st.com>
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Signed-off-by: Bernhard Reutner-Fischer <rep.dot.nop@gmail.com>
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* origin/master: (32 commits)
libubacktrace: fix backtrace support on arm-eabi, which needs libgcc_eh linked too
getaddrinfo.c: fix incorrect check for ERANGE from gethostbyaddr_r
getaddrinfo.c: improve code readability. No functional changes
string: remove unused variable
x86_64: silence warning if !TLS
buildsys: prettify ssp.c handling
madvise is LINUX_SPECIFIC
test_nptl: fix expected result for tst-cputimer[123]
test_nptl: fix expected result for tst-clock2 test
buildsys: make $(LOCAL_INSTALL_PATH) phony
ether_aton: reject invalid input
tests: disable ether tests if !HAS_SOCKET
inet: add ether_aton testcase
sysconf: clock_getres depends on HAS_REALTIME
__rt_sigwaitinfo: depends on HAS_REALTIME
buildsys: minor fixes in Makefile.arch for C6X
buildsys: minor fixes in Makefile.arch for microblaze
libubacktrace: enabled for all archs indeed.
sparc: don't access fp registers when configured for no fpu
libubacktrace: generic implementation based dwarf
...
Conflicts:
ldso/ldso/dl-elf.c
ldso/ldso/mips/elfinterp.c
ldso/ldso/x86_64/elfinterp.c
Signed-off-by: Carmelo Amoroso <carmelo.amoroso@st.com>
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TODO: fix all other arches
Signed-off-by: Bernhard Reutner-Fischer <rep.dot.nop@gmail.com>
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* origin/master: (137 commits)
utils/ldd: Check for returned pointer from strrchr not the value it holds
cris: add provide arch-specific vfork implementation
lutimes.c, stubs.c: fix compiling lutimes, if __NR_utimensat is not defined
bump version to 0.9.32-rc3-git
release 0.9.32-rc3
memalign: include sys/param.h for MAX
arm/bits/atomic.h: Include common/bit/atomic.h for thumb1
wctype.h: fix libc_hidden_proto for iswupper and add it for iswspace
add libc_hidden_proto for wcs[n]casecmp_l
really fix missing __libc_drand48_data
Revert "missing prototype of __libc_drand48_data fixed"
missing prototype of __libc_drand48_data fixed
time.c, time.h: remove unused hidden strftime/strptime
nanosleep.c: remove duplicated libc_hidden_proto
ctype.c, ctype.h: remove commented parts that were banned for removal after 0.9.31
_wctype.c, wctype.h: remove unused isw* and wctype_l hidden functions
time.c, wchar.h: remove unused hidden wcsftime
str[n]casecmp.c: fix hidden usage
remove unused hidden functions
frv/memset.S: add missing libc_hidden_def
...
Conflicts:
ldso/ldso/ldso.c
Signed-off-by: Carmelo Amoroso <carmelo.amoroso@st.com>
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Initialize tls_tpnt to NULL on all archs instead of 0.
Signed-off-by: Peter S. Mazinger <ps.m@gmx.net>
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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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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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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>
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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>
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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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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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from all archs.
Signed-off-by: Jiri Olsa <olsajiri@gmail.com>
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ldso/ldso/avr32/dl-startup.h: remove superfluous definition of START() macro.
ldso/ldso/*/dl-startup.h: fix a typo in comment
text data bss dec hex filename
- 16752 244 92 17088 42c0 lib/ld-uClibc.so
+ 16709 240 92 17041 4291 lib/ld-uClibc.so
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Some powerpc machines can support 64k pages, enabled by the
CONFIG_64K_PAGES option in linux.
However, the uClibc dynamic loader won't currently work on these
machines, as it uses hard-coded values (PAGE_ALIGN, ADDR_ALIGN and
OFFS_ALIGN) in the ldso architecture-specific headers. When running on
a kernel with 64k pages, ld.so tries to mmap with 4k-aligned addresses,
rather than 64k, so mmap fails with -EINVAL.
When booting a 64k machine with a uClibc dynamic linker, init fails
with:
/init:500: can't map '/lib/libc.so.0'
/init:500: can't map '/lib/libc.so.0'
/init:500: can't map '/lib/libc.so.0'
/init: can't load library 'libc.so.0'
Kernel panic - not syncing: Attempted to kill init!
This change allows ld.so determine these alignment masks at runtime,
rather than compile-time. Since we have the _dl_pagesize variable
available, we can use that to generate the appropriate masks.
Since almost all of the architectures can use the common definitions for
the _ALIGN macros, we can consolidate them all in ldso.h, and override
in the sysdep headers where necessary (ie, mips).
This allows me to start a uClibc-based root fs on a 64k machine.
Signed-off-by: Jeremy Kerr <jk at ozlabs org>
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from i386 and x86_64.
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create some default macros for do_rem/do_div_10 so we dont duplicate the samething in many arch header files
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specific header file to make porting/updates a lot easier
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the default
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syscall.h should not have it's own version of __set_errno, instead syscall.h should
include errno.h(see powerpc) since errno handling depends on threads/no threads.
I leave the the fixing of syscall.h since there might be some smaller compile problems.
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dl-syscalls.h
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(since it works)
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