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Simplify and use generic lowlevellock.
Tested-by: Waldemar Brodkorb <wbx@uclibc-ng.org>
Signed-off-by: Leonid Lisovskiy <lly.dev@gmail.com>
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Simplify and use generic lowlevellock.
Tested-by: Waldemar Brodkorb <wbx@uclibc-ng.org>
Signed-off-by: Leonid Lisovskiy <lly.dev@gmail.com>
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Simplify and use generic lowlevellock.
Tested-by: Waldemar Brodkorb <wbx@uclibc-ng.org>
Signed-off-by: Leonid Lisovskiy <lly.dev@gmail.com>
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lowlevellock.c for arm differs from the generic lowlevellock.c only in
insignificant ways, so can be removed. Follow glibc commit 6d96f5e4c0
Solves __lll_timedlock_wait busy-wait issues described at
http://sourceware.org/bugzilla/show_bug.cgi?id=15119
Signed-off-by: Leonid Lisovskiy <lly.dev@gmail.com>
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unlocked NORMAL mutex.
Althought, it is undefined behavior, there is no reason for segfault.
Program received signal SIGSEGV, Segmentation fault.
__pthread_unlock (lock=lock@entry=0x804b03c <lock+16>)
at libpthread/linuxthreads.old/spinlock.c:231
231 (&lock->__status, oldstatus, (long)(thr->p_nextlock) & ~1L))
It occurs only on platforms which has HAS_COMPARE_AND_SWAP defined.
Restore glibc commit fbaf6e72d6 "spinlock.c (__pthread_unlock): Don't crash if
called for an untaken mutex." behavior, broken later by commit 4ad1d0cfbf.
Signed-off-by: Leonid Lisovskiy <lly.dev@gmail.com>
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Sync pthread_spin_lock/pthread_spin_trylock with GNU libc as it avoids
any usage of deprecated SWP instruction. This allows to build uClibc-ng
for ARMv8 Cortex-A53 CPU in 32 Bit mode.
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Accidentally, commit 43ef9c6b3 wasn't taken into account.
Signed-off-by: Leonid Lisovskiy <lly.dev@gmail.com>
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Commit 9c4fce55a (nptl: remove sigaction, sigprocmask, and sigfillset from
libpthread) removed pt-sigaction.c from the build to fix static build.
However, since the libc sigaction is weak when HAS_THREADS is enabled, static
build is not be affected. Tested for xtensa, x86, MIPS32 targets.
Fixes nptl/tst-signal7.
Moreover, commit 9193a76bb from the 0.9.33 branch has the right version.
Ref.: http://patchwork.ozlabs.org/patch/286084/
Signed-off-by: Baruch Siach <baruch@tkos.co.il>
Signed-off-by: Leonid Lisovskiy <lly.dev@gmail.com>
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Got the working code from https://github.com/jdkoftinoff/mb-linux-msli/,
otherwise SIGILL while using linuxthreads.
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Linuxthreads.new isn't really useful with the existence
of NPTL/TLS for well supported architectures. There is no
reason to use LT.new for ARM/MIPS or other architectures
supporting NPTL/TLS. It is not available for noMMU architectures
like Blackfin or FR-V. To simplify the live of the few uClibc-ng
developers, LT.new is removed and LT.old is renamed to LT.
LINUXTHREADS_OLD -> UCLIBC_HAS_LINUXTHREADS
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copy file from linuxthreads to be able to compile gdbserver.
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License notices in most of the source files refer to an outdated
FSF address. Replace it with URL, like in the rest of the source
files.Signed-off-by: Nikola Forró <nforro@redhat.com>
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Currently, the Thumb support on ARM has three related Config.in
options, which are not trivial for users to understand, and are in
fact not needed:
- The USE_BX option is not needed: knowing whether BX is available or
not is easy. If you have an ARM > v4 or ARMv4T, then BX is
available, otherwise it's not. This is the logic used in glibc.
- The USE_LDREXSTREX option is not needed: whenever Thumb2 is
available, ldrex/strex are available, so we can simply rely on
__thumb2__ to determine whether ldrex/strex should be used, without
requiring a Config.in option.
- Once USE_BX and USE_LDREXSTREX are removed, the only thing left
that COMPILE_IN_THUMB does is to set -mthumb. This makes the option
unnecessary, as on ARM at least, the user is already supposed to
pass -march=<foo> or other compiler options tuning the library for
a specific ARM variant. There is no reason to do otherwise for
Thumb, which allows to get rid of the COMPILE_IN_THUMB option.
Signed-off-by: Thomas Petazzoni <thomas.petazzoni@free-electrons.com>
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At least allow to build a toolchain for hppa.
Sync some headers with glibc.
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fix infinite recursion on application exit triggered by linking
libc before libpthread.
Patch from OpenWrt.
Reported-by: Leonid Lisovskiy <lly.dev@gmail.com>
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Trivial fix.
Signed-Off-By: Leonid Lisovskiy <lly.dev@gmail.com>
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Some applications needs it.
Signed-off-by: Leonid Lisovskiy <lly.dev@gmail.com>
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Both architectures are more or less deprecated.
No Linux upstream support, no gcc support for uClinux.
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Use the arch specific thread stack size for nptl if the size
returned by getrlimits exceeds it - fixes threads on systems
with only 16 MB RAM.
Patch from OpenWRT
Reported-by: Leonid Lisovskiy <lly.dev@gmail.com>
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Idea from different projects as OpenWrt and others.
https://lists.openwrt.org/pipermail/openwrt-devel/2013-November/022299.html
https://github.com/wl500g/toolchain/blob/master/toolchain/uClibc/patches/0.9.32/980-stack-cache-maxsize.patch
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Signed-off-by: Khem Raj <raj.khem@gmail.com>
Signed-off-by: Waldemar Brodkorb <wbx@uclibc-ng.org>
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Get rid of NIOS support. We try to support NIOSII.
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No real hardware available. The project for sh64 with sh5 seems
dead since 10 years. Gcc will remove support for it soon.
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.globl can be used for every architecture so remove the define.
Sync with GNU C library.
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It's even no longer required for non-ported ppc64
architecture. Sync with GNU C library.
This simplify the macros in include/libc-symbols.h.
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Signed-off-by: Max Filippov <jcmvbkbc@gmail.com>
Signed-off-by: Waldemar Brodkorb <wbx@uclibc-ng.org>
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Commit 2d9740a65a "uclibc: nptl: fix __lll_lock_wait_private multiple definition"
did a sweeping change which did for all in tree arches at that time (ARC
wasn't)
Signed-off-by: Vineet Gupta <vgupta@synopsys.com>
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Move TLS initialization for static builds up to the calling
function as suggested by Daniel Fahlgren.
Reported-By: Daniel Fahlgren <daniel@fahlgren.se>
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Information about Openrisc:
http://opencores.org/or1k/Main_Page
Integrated from:
https://github.com/openrisc/uClibc-or1k
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Most changes are mechanical replacement of 'retw' instruction with
'abi_ret' macro, defined to 'retw' or 'ret' according to ABI.
Assembly code that makes calls is duplicated for call0 ABI with changed
register numbers for parameters/return value and call instruction.
'entry' instructions are replaced with 'abi_entry' macro.
More interesting changes:
- non-leaf assembly functions (e.g. _dl_tlsdesc_dynamic,
_dl_linux_resolve, SYSCALL_ERROR_HANDLER, PSEUDO) now need to preserve
registers around intermediate calls they make, use temporary stack
frame for that;
- setjmp/longjmp only need to save and restore return address, stack
pointer and callee-saved registers in the jmpbuf;
- __clone and syscall functions had hardcoded offsets to parameter
passed on stack, on call0 ABI they don't need stack frame, so the
offset is different. Replace these offsets with FRAMESIZE macro.
Signed-off-by: Max Filippov <jcmvbkbc@gmail.com>
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Stack unwinding that happens during NPTL thread cancellation needs
cancellable syscall wrapper functions to be compiled with -fexceptions
-fasynchronous-unwind-tables to be able to unwind to cleanup handlers
registered before syscall invocation.
Add these flags for all cancellable syscall wrappers.
Signed-off-by: Max Filippov <jcmvbkbc@gmail.com>
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When debugging a program on ARMv7 with thread-local storage declared using
"__thread", attempting to print a thread-local variable will result in the
following message:
Cannot find thread-local storage for Thread <snip> (LWP <snip>), executable
file /tmp/tls: capability not available
This can be traced back to uclibc libpthread/nptl_db/td_thr_tls_get_addr.c
which gdb uses to look up the address of the TLS. The function returns
TD_NOCAPAB due to a mismatch in size between the DTV pointer and the size
recorded in the db description. The problem lies in libpthread/nptl_db/db_info.c
which initializes the db with the sizeof the union dtv. Instead it should
be the sizeof a pointer to union dtv.
Fixed the initial size for dtvp to sizeof a pointer, instead of sizeof
the union.
Refer to:
http://sourceware.org/ml/libc-alpha/2006-10/msg00088.html
https://sourceware.org/git/?p=glibc.git;a=commitdiff;h=416b630981788c1f08e746e19765aa0e5c2a1360
Signed-off-by: Junling Zheng <zhengjunling@huawei.com>
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Sync with glibc, quietens gcc warnings.
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Change __gen_tempname() prototype in order to pass the additional
suffix lenght. In __gen_tempname() add a new check for suffixlen.
Update some comments in the code.
Signed-off-by: Romain Naour <romain.naour@openwide.fr>
Signed-off-by: Waldemar Brodkorb <wbx@uclibc-ng.org>
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Found via buildroot autobuilder.
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Native gdb makes a ptrace (GET_THREAD_AREA) which needs to return the
TP. however when libc sets up TP reg (for main thread), it doesn't call
arc_settls syscall so kernel doesn't know of TP register details
(moreso because clone doesnt have SETTLS flag)
Note that kernel doesn't know about r25 being TP etc.
This commit got lost in merge of NPTL tools into arc-mainline-dev and
showed up again as STAR 9000919529 (native gdb can't debug threaded
apps)
------->8---------------
[ARCLinux]# gdb ./pth
Reading symbols from ./pth...(no debugging symbols found)...done.
(gdb) b main
Breakpoint 1 at 0x106f2
(gdb) r
Starting program: /pth
[Thread debugging using libthread_db enabled]
Using host libthread_db library "/lib/libthread_db.so.1".
thread_get_info_callback: cannot get thread info: generic error
(gdb) q
------->8---------------
Debugged-by: Anton Kolesov <akolesov@synopsys.com>
Signed-off-by: Vineet Gupta <vgupta@synopsys.com>
Signed-off-by: Vineet Gupta <vgupta@synopsys.com>
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Cancellable syscalls use call8 to call functions that enable/disable
cancellation, thus they cannot use the default FRAMESIZE.
Redefine FRAMESIZE for such syscalls.
This fixes the following testsuite failure:
.... tst-mqueue8
FAIL tst-mqueue8 got 1 expected 0
going to cancel mq_receive in-time
in-time mq_receive cancellation succeeded
going to cancel mq_receive early
Didn't expect signal from child: got `Segmentation fault'
Signed-off-by: Max Filippov <jcmvbkbc@gmail.com>
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When built with gcc 5.1, uClibc-ng fails to build with the following
issue:
librt/librt_so.a(rt-unwind-resume.oS): In function `_Unwind_Resume':
rt-unwind-resume.c:(.text+0x3c): undefined reference to
This commit fixes the code in a way similar to what was done in glibc
in commit:
https://sourceware.org/git/gitweb.cgi?p=glibc.git;a=commitdiff;h=175cef4163dd60f95106cfd5f593b8a4e09d02c9
Signed-off-by: Thomas Petazzoni <thomas.petazzoni@free-electrons.com>
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Signed-off-by: Bernhard Reutner-Fischer <rep.dot.nop@gmail.com>
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(__pthread_initialize_minimal_internal): Initialize pd->report_events
to that.
This patch helps NPTL report TD_CREATE event, so that GDB could catch the
event and update its thread_list.
Link: http://lists.uclibc.org/pipermail/uclibc/2015-April/048921.html
[shengyong:
- original patch from glibc: commit 7d9d8bd18906fdd17364f372b160d7ab896ce909
- context adjust
- update nptl_db/ChangeLog]
Signed-off-by: Roland McGrath <roland@gnu.org>
Signed-off-by: Sheng Yong <shengyong1@huawei.com>
Signed-off-by: Bernhard Reutner-Fischer <rep.dot.nop@gmail.com>
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pt-initfini eventually depends on xlocale
Signed-off-by: Bernhard Reutner-Fischer <rep.dot.nop@gmail.com>
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ucontext_i.h too depends on uClibc_config.h.
Update it to look like the other MANGLE generated files and tweak
prereqs
Fixes: make realclean ; make -j libc/misc/internals/__uClibc_main.i
Signed-off-by: Bernhard Reutner-Fischer <rep.dot.nop@gmail.com>
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Only the stub warnings left for now.
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