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2018-10-27ARC: Accommodate TLS fix in BinutilsEvgeniy Didin
[1] fixes clash of TLS variables on ARC and since LD now calculates relocations a bit different now we need to update dynamic loader as well otherwise relocs will be calculated improperly. Note this is an ABI change and should go in-line with corresponding ARC tools. That said either arc-2018.09 (to be released in few weeks) or the next version of upstream Binutils (2.32) are required for normal TLS work on ARC. Testcase: ----------------------------------8<------------------------------- #include <stdio.h> int foo3(void); int foo1(void); #ifdef _SHARED int foo1(){ static __thread int val3=1; val3 += 2; return val3; } #elif _SHARED2 int foo3(){ static __thread int val2=0; val2 += 2; return val2; } #else int main(){ printf("foo1 = %d \n", foo1()); printf("foo3 = %d \n", foo3()); return 0; } #endif --------------------------------->8--------------------------------------- The result shoud be: ----8<---- foo1 = 3 foo3 = 2 ---->8---- Commands to build artefacts: ----------------------------------------8<------------------------------- arc-linux-gcc -fPIE -ffunction-sections -fdata-sections -pthread -Os \ -fPIC -o testtls.o -D_SHARED -c tst.c arc-linux-gcc -fPIE -ffunction-sections -fdata-sections -pthread -Os \ -fPIC -o testtls2.o -D_SHARED2 -c tst.c arc-linux-gcc -shared -o libtesttls.so testtls.o testtls2.o -lm -Os arc-linux-gcc tst.c -o tst.out -L./ -ltesttls -Os -fPIE --------------------------------->8--------------------------------------- Add path to libtesttls.so file to LD_LIBRARY_PATH before runnig tst.out application. [1] https://sourceware.org/git/gitweb.cgi?p=binutils-gdb.git;a=commit;h=714e9a954a2e4123dcb26bb8da850e1344de4f5f Signed-off-by: Alexey Brodkin <abrodkin@synopsys.com> Signed-off-by: Evgeniy Didin <didin@synopsys.com> CC: Cupertino Miranda <cmiranda@synopsys.com> CC: Vineet Gupta <vgupta@synopsys.com> CC: Waldemar Brodkorb <wbx@uclibc-ng.org>
2018-10-20do not expose recvmmsg/sendmmsg for unsupported kernelsWaldemar Brodkorb
2018-09-21bugfix renameat2 wrong implement.Guo Ren
Signed-off-by: Guo Ren <ren_guo@c-sky.com>
2018-09-21wordexp: Fix the usage of the internal _itoa functionSegev Finer
The original from glibc received the end of the buffer and worked backwards. Ours needs the beginning of the buffer. Signed-off-by: Segev Finer <segev208@gmail.com>
2018-08-16sched_setaffinity: use the same style with glibc'sGuo Ren
Call getpid() in INTERNAL_SYSCALL will break the argument regs, because gcc couldn't save destoryed regs for system call asm. Ref to glibc, we could just remove all the check code. Signed-off-by: Guo Ren <ren_guo@c-sky.com>
2018-08-10rtld: Avoid crash on R_ARM_NONE relocationChristophe Lyon
R_ARM_NONE contains no data, so avoid dereferencing it. * ldso/ldso/arm/elfinterp.c (_dl_do_reloc): Handle R_ARM_NONE relocation (_dl_do_reloc_lazy): Likewise. Signed-off-by: Mickaël Guêné <mickael.guene@st.com> Signed-off-by: Christophe Lyon <christophe.lyon@st.com>
2018-08-10Fix shm_open posix compliance error codeChristophe Lyon
Handle EISDIR in shm_open like glibc does, and set EINVAL. * librt/shm.c (shm_open): Handle EISDIR error. Signed-off-by: Mickaël Guêné <mickael.guene@st.com> Signed-off-by: Christophe Lyon <christophe.lyon@st.com>
2018-08-10mbtowc: Fix non compliant behavior for end of stringChristophe Lyon
Match glibc behavior. * libc/stdlib/stdlib.c (mbtowc): Fix end of string behavior. Signed-off-by: Mickaël Guêné <mickael.guene@st.com> Signed-off-by: Christophe Lyon <christophe.lyon@st.com>
2018-08-10isnan: Add isnan weak alias to __isnanChristophe Lyon
* libm/s_isnan.c: Add isnan weak alias. Signed-off-by: Mickaël Guêné <mickael.guene@st.com> Signed-off-by: Christophe Lyon <christophe.lyon@st.com>
2018-08-10Fix htab_delete loop counterChristophe Lyon
dlclose can crash or stuck the system: When calling dlclose() then system can crash or freeze, because htab_delete() in ldso/ldso/fdpic/dl-inlines.h uses size_t for i which is a typedef to unsigned int. We exit the loop on negative value of i which can never occur since i is an unsigned int. This leads to random free of various pointers that kill the system. * ldso/include/inline-hashtab.h (htab_delete): Change type of 'i' to int. Signed-off-by: Mickaël Guêné <mickael.guene@st.com> Signed-off-by: Christophe Lyon <christophe.lyon@st.com>
2018-08-10nptl threads: Fix bug in using a weak variable.Christophe Lyon
In case __nptl_nthreads is not defined in the final binary then avoid dereferencing the address since it's null. Anyway this means there is no other thread and so we must exit. * libc/misc/internals/__uClibc_main.c (__uClibc_main): Handle case where &__nptl_nthreads is null. Signed-off-by: Mickaël Guêné <mickael.guene@st.com> Signed-off-by: Christophe Lyon <christophe.lyon@st.com>
2018-08-10nptl: Replace sbrk with mmapChristophe Lyon
Replace sbrk with mmap since this commit disables sbrk area for FDPIC MMU-less platform: fs/binfmt_elf_fdpic.c: fix brk area overlap with stack on NOMMU https://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/fs/binfmt_elf_fdpic.c?id=4ac313111018cb44ecc250445de5ccb93026a980 * libpthread/nptl/sysdeps/generic/libc-tls.c (__libc_setup_tls): Handle __FDPIC__. Signed-off-by: Mickaël Guêné <mickael.guene@st.com> Signed-off-by: Christophe Lyon <christophe.lyon@st.com>
2018-08-10nptl: Clear TLS area for static binaries.Christophe Lyon
busybox init checks it has pid 1, but getpid() returns another value when building busybox statically. This is because the corresponding area is not cleared when allocated (it is allocated with MAP_UNINITIALIZED, whose behavior depends on the Linux kernel's CONFIG_MMAP_ALLOW_UNINITIALIZED). This patch fixes the problem by explicitly clearing the memory area. * libpthread/nptl/sysdeps/generic/libc-tls.c (__libc_tls_setup): Clear tlsblock. Signed-off-by: Mickaël Guêné <mickael.guene@st.com> Signed-off-by: Christophe Lyon <christophe.lyon@st.com>
2018-08-10nptl: Use vfork on MMU-less for system()Christophe Lyon
* libc/stdlib/system.c (FORK): Map to vfork if __ARCH_USE_MMU__ is defined. Signed-off-by: Mickaël Guêné <mickael.guene@st.com> Signed-off-by: Christophe Lyon <christophe.lyon@st.com>
2018-08-10nptl: Add pthread_mutex_getprioceiling and pthread_mutex_setprioceiling supportChristophe Lyon
* libpthread/nptl/Makefile.in (libpthread-routines-): Remove pthread_mutex_getprioceiling.c and pthread_mutex_setprioceiling.c. Signed-off-by: Mickaël Guêné <mickael.guene@st.com> Signed-off-by: Christophe Lyon <christophe.lyon@st.com>
2018-08-10nptl: Allow sem_open to work on MMU-less systemsChristophe Lyon
Allow both tmpfs and ramfs for shm devices. * libpthread/nptl/linux_fsinfo.h (SHMFS_SUPER_MAGIC_WITH_MMU): Define. (SHMFS_SUPER_MAGIC_WITHOUT_MMU): Define. * libpthread/nptl/sem_open.c (__where_is_shmfs): Add support for SHMFS_SUPER_MAGIC_WITHOUT_MMU. Signed-off-by: Mickaël Guêné <mickael.guene@st.com> Signed-off-by: Christophe Lyon <christophe.lyon@st.com>
2018-08-10nptl: Use linker-defined symbol to find start of .tdata section.Christophe Lyon
phdr->p_vaddr of TLS segment is not a valid value for FDPIC so we can either translate phdr->p_vaddr using loadmap (not easy here) or use a new linker script defined symbol, whih this patch does. * libpthread/nptl/sysdeps/generic/libc-tls.c (__tdata_start): Declare. (__libc_setup_tls): Support __FDPIC__. Signed-off-by: Mickaël Guêné <mickael.guene@st.com> Signed-off-by: Christophe Lyon <christophe.lyon@st.com>
2018-08-10nptl: Do not use madviseChristophe Lyon
start_thread() uses it, but it is not supported on MMU-less systems. * libpthread/nptl/pthread_create.c (start_thread): Call madvise only if __ARCH_USE_MMU__ is defined. Signed-off-by: Mickaël Guêné <mickael.guene@st.com> Signed-off-by: Christophe Lyon <christophe.lyon@st.com>
2018-08-10nptl: Disable fork and atfork on MMU-less systems.Christophe Lyon
They do not work on MMU-less systems. For atfork, implement a hidden function that always returns EPERM. * libpthread/nptl/sysdeps/unix/sysv/linux/fork.c: Disable if __ARCH_USE_MMU__ is not defined. * libpthread/nptl/sysdeps/unix/sysv/linux/libc_pthread_init.c (__libc_pthread_init): Handle __ARCH_USE_MMU__. * libpthread/nptl/sysdeps/unix/sysv/linux/register-atfork.c: Likewise. * libpthread/nptl/sysdeps/unix/sysv/linux/unregister-atfork.c: Likewise. Signed-off-by: Mickaël Guêné <mickael.guene@st.com> Signed-off-by: Christophe Lyon <christophe.lyon@st.com>
2018-08-10nptl: disable mprotect usage in stack protectionChristophe Lyon
Since mprotect does not work on MMU-less systems, disable it if __ARCH_USE_MMU__ is not defined. * libpthread/nptl/allocatestack.c (change_stack_perm): Call mprotect only if __ARCH_USE_MMU__ is defined. (allocate_stack): Likewise. Signed-off-by: Mickaël Guêné <mickael.guene@st.com> Signed-off-by: Christophe Lyon <christophe.lyon@st.com>
2018-08-10rtld: Initialize _dl_error_catch_tsd without FUNCDESC relocationChristophe Lyon
Make _dl_initial_error_catch_tsd hidden, such that we do not need a FUNCDESC relocation when initializing _dl_error_catch_tsd. * ldso/ldso/dl-tls.c (_dl_initial_error_catch_tsd): Declare hidden. Signed-off-by: Mickaël Guêné <mickael.guene@st.com> Signed-off-by: Christophe Lyon <christophe.lyon@st.com>
2018-08-10rtld: Use ELF_RTYPE_CLASS_DLSYMChristophe Lyon
rtld must call _dl_find_hash() with ELF_RTYPE_CLASS_DLSYM since we want a function descriptor. * ldso/ldso/ldso.c (_dl_get_ready_to_run): Support __FDPIC__. Signed-off-by: Mickaël Guêné <mickael.guene@st.com> Signed-off-by: Christophe Lyon <christophe.lyon@st.com>
2018-08-10enable NPTL on TARGET_armChristophe Lyon
* extra/Configs/Config.in: enable UCLIBC_HAS_THREADS_NATIVE on TARGET_arm. Signed-off-by: Christophe Lyon <christophe.lyon@st.com>
2018-08-10arm/clone.S: Fix threading supportChristophe Lyon
Change clone.S so that in FDPIC case we take into account the fact that we are given a function descriptor. * libc/sysdeps/linux/arm/clone.S (__clone): Support __FDPIC__. Signed-off-by: Mickaël Guêné <mickael.guene@st.com> Signed-off-by: Christophe Lyon <christophe.lyon@st.com>
2018-08-10rtld: Compile with -fno-unwind-tables -fno-asynchronous-unwind-tablesChristophe Lyon
Otherwise we have link errors because of unresolved refs in libgcc.a: ld: /lib/gcc/arm-none-uclinuxfdpiceabi/9.0.0/libgcc.a(pr-support.o): in function `_Unwind_GetDataRelBase': /libgcc/config/arm/pr-support.c:378: undefined reference to `abort' ld: /lib/gcc/arm-none-uclinuxfdpiceabi/9.0.0/libgcc.a(unwind-arm.o): in function `unwind_phase2_forced': /libgcc/unwind-arm-common.inc:511: undefined reference to `memcpy' * ldso/ldso/Makefile.in (CFLAGS-rtld): Always use -fno-unwind-tables -fno-asynchronous-unwind-tables on arm Signed-off-by: Christophe Lyon <christophe.lyon@st.com>
2018-08-10rtld: Add lazy binding supportChristophe Lyon
Add support for R_ARM_FUNCDESC_VALUE and implement _dl_linux_resolver for FDPIC on ARM. * ldso/ldso/arm/elfinterp.c (_dl_linux_resolver): Support __FDPIC__. (_dl_do_lazy_reloc): Likewise. * ldso/ldso/arm/resolve.S (_dl_linux_resolve): Likewise. Signed-off-by: Mickaël Guêné <mickael.guene@st.com> Signed-off-by: Christophe Lyon <christophe.lyon@st.com>
2018-08-10TLS: fix relocation computationChristophe Lyon
* ldso/ldso/dl-elf.c (_dl_load_elf_shared_library): Fix l_tls_initimage computation. * ldso/ldso/ldso.c (_dl_get_ready_to_run): Likewise. Signed-off-by: Mickaël Guêné <mickael.guene@st.com> Signed-off-by: Christophe Lyon <christophe.lyon@st.com>
2018-08-10Allow to generate PIE 'static' binaryChristophe Lyon
* libc/misc/internals/__uClibc_main.c (funcdesc_value): New. (fdpic_init_array_jump): New. (__uClibc_fini): Support __FDPIC__. (__uClibc_main): Likewise. Signed-off-by: Mickaël Guêné <mickael.guene@st.com> Signed-off-by: Christophe Lyon <christophe.lyon@st.com>
2018-08-10Add runtime support needed for C++ exceptionsChristophe Lyon
Implements __gnu_Unwind_Find_got(), which is called from libgcc while unwinding. * libc/sysdeps/linux/arm/Makefile.arch (CSRC): Add find._got.c. * libc/sysdeps/linux/arm/find_got.c: New file. Signed-off-by: Mickaël Guêné <mickael.guene@st.com> Signed-off-by: Christophe Lyon <christophe.lyon@st.com>
2018-08-10Add application startup code for FDPICChristophe Lyon
* libc/sysdeps/linux/arm/crt1.S: Define _start for __FDPIC__. Signed-off-by: Mickaël Guêné <mickael.guene@st.com> Signed-off-by: Christophe Lyon <christophe.lyon@st.com>
2018-08-10Fix bug in _dl_pread when using pread64 syscallChristophe Lyon
In ARM_EABI mode, the pread64 syscall parameters are aligned on 64-bits. This syscall is used in rtld when processing FDPIC relocations. * ldso/include/dl-syscall.h (__syscall_pread): Fix definition. (__dl_pread): Fix syscall invocation. * ldso/ldso/fdpic/dl-sysdep.h (__DL_PREAD): Handle __NR_pread64. Signed-off-by: Mickaël Guêné <mickael.guene@st.com> Signed-off-by: Christophe Lyon <christophe.lyon@st.com>
2018-08-10rtld: Add startup codeChristophe Lyon
Implement _start: compute parameters for __self_reloc, and give control to the user program. * ldso/ldso/arm/dl-startup.h: Implement _start for __FDPIC__. Signed-off-by: Mickaël Guêné <mickael.guene@st.com> Signed-off-by: Christophe Lyon <christophe.lyon@st.com>
2018-08-10rtld: Avoid FUNCDESC relocation on _startChristophe Lyon
* ldso/ldso/ldso.c (_start): Fix definition for __FDPIC__. Signed-off-by: Mickaël Guêné <mickael.guene@st.com> Signed-off-by: Christophe Lyon <christophe.lyon@st.com>
2018-08-10rtld: Add FDPIC code for armChristophe Lyon
Add FDPIC dynamic relocations support, similar to what other FDPIC targets do. Lazy binding is implemented in a folllow-up patch. Disable the SEND* macros because they involve relocations to access constant strings that are unsupported by the existing arm version. Define DL_START, START, ARCH_NEEDS_BOOTSTRAP_RELOCS, DL_CHECK_LIB_TYPE similarly to what other FDPIC targets do. Define raise() because _dl_find_hash references __aeabi_uidivmod, which uses __aeabi_idiv0 which in turn references raise. * include/elf.h (R_ARM_FUNCDESC): Define. (R_ARM_FUNCDESC_VALUE): Define. * ldso/include/dl-string.h (SEND_STDERR, SEND_ADDRESS_STDERR) (SEND_NUMBER_STDERR): Define empty for __FDPIC__. * ldso/ldso/arm/dl-inlines.h: New file. * ldso/ldso/arm/dl-startup.h (PERFORM_BOOTSTRAP_RELOC): Fix type of load_addr. Fix handling of R_ARM_RELATIVE, add support for R_ARM_FUNCDESC_VALUE. (DL_START, START): Define for __FDPIC__. (raise): Define. * ldso/ldso/arm/dl-sysdep.h (ARCH_NEEDS_BOOTSTRAP_RELOCS): Define. (DL_CHECK_LIB_TYPE): Define. (elf_machine_type_class): Take into account FDPIC related relocations. (elf_machine_load_address): Support __FDPIC__. (elf_machine_relative): Likewise. * ldso/ldso/arm/elfinterp.c (_dl_linux_resolver): Dummy support for __FDPIC__, implemented in a later patch. (_dl_do_reloc): Fix reloc_adr computation for __FDPIC__, fix handling of local symbols. Fix handling of R_ARM_RELATIVE, add support for R_ARM_FUNCDESC_VALUE, R_ARM_FUNCDESC. * ldso/ldso/arm/resolve.S: Make _dl_linux_resolve hidden. * ldso/ldso/fdpic/dl-inlines.h (htab_delete): Declare. * libc/sysdeps/linux/arm/bits/elf-fdpic.h: New file, similar to bfin's. * libc/sysdeps/linux/arm/crtreloc.c: Likewise. * libc/sysdeps/linux/arm/find_exidx.c (__dl_addr_in_loadaddr) Define. (find_exidx_callback): Support __FDPIC__. Signed-off-by: Mickaël Guêné <mickael.guene@st.com> Signed-off-by: Christophe Lyon <christophe.lyon@st.com>
2018-08-10rtld: Add #if defined (__FDPIC__)Christophe Lyon
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>
2018-08-10rtld: Do not protect RELRO segments when we don't use an MMU.Christophe Lyon
Without MMU, we cannot mark memory regions as read-only. * ldso/ldso/dl-elf.c (_dl_protect_relro): Do nothing if __ARCH_USE_MMU__ is defined. Signed-off-by: Christophe Lyon <christophe.lyon@st.com>
2018-08-10Allow to select FDPIC ELF for arm architectureChristophe Lyon
* extra/Configs/Config.in.arch: Add TARGET_arm to the target list for UCLIBC_FORMAT_FDPIC_ELF. Signed-off-by: Mickaël Guêné <mickael.guene@st.com> Signed-off-by: Christophe Lyon <christophe.lyon@st.com>
2018-06-29elf.h: add some missing definesWaldemar Brodkorb
2018-06-29ldso/arc: fix LD_DEBUG segv when printing R_ARC_NONEVineet Gupta
Signed-off-by: Vineet Gupta <vgupta@synopsys.com>
2018-06-15Fix prototypes for preadv pwritev.Vlad Starodubtsev
2018-06-10risc-v: initial 64 bit port, static only (no TLS/NPTL)Waldemar Brodkorb
Only a simple hello world is tested in qemu system emulation.
2018-06-06remove unused assembler functions for armFlorian La Roche
These assembler functions seem to be unused/referenced, so we can remove them completely. Signed-off-by: Florian La Roche <Florian.LaRoche@googlemail.com>
2018-05-29libiconv: add missing header files from previuos commitWaldemar Brodkorb
Missed in 5fdd379d9dbf8be74f2f1a0d33e62958e817ae7d.
2018-05-27libiconv: port over simplified iconv from muslWaldemar Brodkorb
2018-05-05librt: clock_nanosleep could be even used without threadsWaldemar Brodkorb
2018-05-01librt: declare clock_nanosleep not only for NPTLWaldemar Brodkorb
Reported-by: Baruch Siach <baruch@tkos.co.il> Signed-off-by: Waldemar Brodkorb <wbx@openadk.org>
2018-04-29Revert "ldconfig: add glibc compatibility fix"Waldemar Brodkorb
This reverts commit 2a3bb4daf5778c5875674cd26a3c75b3d460a042. This is breaking ld.so.cache usage. Seen on Gentoo/amd64. Reported-by: "Anthony G. Basile" <basile@freeharbor.net>
2018-04-28bump for release 1.0.30v1.0.30Waldemar Brodkorb
2018-04-28mention Tile architectureWaldemar Brodkorb
2018-04-27libdl: first execute all destructors, then munmap libraryWaldemar Brodkorb
Fix problem which might exist since 2011. We need to execute the destructors for all dependant libraries, before munmap the shared libraries, otherwise running destructor of a dependent library might cause a segfault, trying to access an already unmapped memory. This fixes for example segfaults while running php -m with ldap module. Reported-By: Dave Flogeras <dflogeras2@gmail.com> Tested-By: Dave Flogeras <dflogeras2@gmail.com>
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