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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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Signed-off-by: Bernhard Reutner-Fischer <rep.dot.nop@gmail.com>
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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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Signed-off-by: Bernhard Reutner-Fischer <rep.dot.nop@gmail.com>
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Add __LEAF to all __THROW, introduce non-leaf __THROWNL
Adjust affected spots accordingly.
Signed-off-by: Bernhard Reutner-Fischer <rep.dot.nop@gmail.com>
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This reverts commit 6b6ede3d15f04fe825cfa9f697507457e3640344.
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As suggested on the uCLibc mailing list:
http://lists.uclibc.org/pipermail/uclibc/2014-November/048702.html
http://lists.uclibc.org/pipermail/uclibc/2014-November/048703.html
http://lists.uclibc.org/pipermail/uclibc/2014-November/048704.html
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amending commit 49a67cf67d5a7194214566bc730ee7e28d55bbe1
could need a thumb implementation..
Signed-off-by: Bernhard Reutner-Fischer <rep.dot.nop@gmail.com>
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Signed-off-by: Thorsten Glaser <tg@mirbsd.org>
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Signed-off-by: Thorsten Glaser <tg@mirbsd.org>
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mkostemp(char *template, int flags) generates a unique temporary
filename from a template. The flags parameter accepts three of
the same flags as open(2): O_APPEND, O_CLOEXEC, and O_SYNC. The
current implementation of mkostemp(3) does not respect the flags
and in fact confuses the flags with the file mode which should
always be S_IRUSR | S_IWUSR. This patch corrects this issue.
Signed-off-by: Anthony G. Basile <blueness@gentoo.org>
Signed-off-by: Bernhard Reutner-Fischer <rep.dot.nop@gmail.com>
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mkostemp(char *template, int flags) generates a unique temporary
filename from a template. The flags parameter accepts three of
the same flags as open(2): O_APPEND, O_CLOEXEC, and O_SYNC. The
current implementation of mkostemp(3) does not respect the flags
and in fact confuses the flags with the file mode which should
always be S_IRUSR | S_IWUSR. This patch corrects this issue.
Signed-off-by: Anthony G. Basile <blueness@gentoo.org>
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could need a thumb implementation..
Signed-off-by: Bernhard Reutner-Fischer <rep.dot.nop@gmail.com>
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Otherwise you get following linking error, because
of missing functions in libc.a:
undefined reference to `__libc_enable_asynccancel'
Fix by Thorsten Glaser while hacking session.
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The tas instruction is not available for most coldfire CPU's.
Use bset instead in this case as already used in linuxthreads.old.
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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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Cleanup linuxthreads by removing unused s390 code.
Signed-off-by: Waldemar Brodkorb <wbx@openadk.org>
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Automatic patching via two oneliners by Bernhard Reutner-Fischer <rep.dot.nop@gmail.com>:
sed -i -e 's/[[:space:]]pt-vfork\.[csS]//' -e '/^ASFLAGS-pt-vfork\./d' $(git grep -l pt-vfork libpthread/nptl/sysdeps)
find libpthread/nptl -name "*pt-vfork*" -exec git rm {} \;
Reported-By: Thomas Petazzoni <thomas.petazzoni@free-electrons.com>
Tested-by: Thomas Petazzoni <thomas.petazzoni@free-electrons.com>
Signed-off-by: Waldemar Brodkorb <wbx@openadk.org>
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Signed-off-by: Bernhard Reutner-Fischer <rep.dot.nop@gmail.com>
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define NOT_IN_libc / IS_IN_libxxx appropriately
to fix pthread_once
Signed-off-by: Bernhard Reutner-Fischer <rep.dot.nop@gmail.com>
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Avoids circular dependency warning from make by generating the .h
directly from the .sym files, elimination intermediate files.
Signed-off-by: Bernhard Reutner-Fischer <rep.dot.nop@gmail.com>
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The sparc64/sparcv9 code is incomplete. Furthermore there is
no real embedded hardware for sparc64 available, so better remove
it until someone comes up with a complete port.
Signed-off-by: Waldemar Brodkorb <wbx@openadk.org>
Signed-off-by: Bernhard Reutner-Fischer <rep.dot.nop@gmail.com>
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tst-spin1.c compile breaks with:
test/nptl/tst-spin1.c:34: undefined reference to `pthread_spin_lock'
pthread_spin_lock and pthread_spin_trylock is missing while
building sparc. add the meta c files here.
Signed-off-by: Waldemar Brodkorb <wbx@openadk.org>
Signed-off-by: Bernhard Reutner-Fischer <rep.dot.nop@gmail.com>
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For sparc TARGET_SUBARCH is never used. And there is a typo in the
path.
Signed-off-by: Waldemar Brodkorb <wbx@openadk.org>
Signed-off-by: Bernhard Reutner-Fischer <rep.dot.nop@gmail.com>
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Mark non-pthread __lll_lock_wait_private weak to avoid multiple
definition error in static link mode.
Signed-off-by: Tony Wu <tung7970@gmail.com>
Signed-off-by: Bernhard Reutner-Fischer <rep.dot.nop@gmail.com>
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Signed-off-by: Vineet Gupta <vgupta@synopsys.com>
Signed-off-by: Bernhard Reutner-Fischer <rep.dot.nop@gmail.com>
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Signed-off-by: Vineet Gupta <vgupta@synopsys.com>
Signed-off-by: Bernhard Reutner-Fischer <rep.dot.nop@gmail.com>
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When compiling against the 2.6.18 kernel headers, during linking of
the NPTL library it runs into a "undefined reference to PRIVATE_FUTEX"
error in pthread_cond_timedwait.S. This resolves the problem by
ensuring that the definition for PRIVATE_FUTEX is made available to
pthread_cond_timedwait.S.
Signed-off-by: Dan Moulding <dan.moulding@rackwareinc.com>
Signed-off-by: Bernhard Reutner-Fischer <rep.dot.nop@gmail.com>
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This patch fixes the rest of the set-but-not-used warnings in the MIPS
code by using attribute_unused and also fixes some conversion warnings
by changing __arch_compare_and_exchange_xxx_[8|16]_int. Assigning __cmp
(int type) to __prev (pointer type) generates a warning. Assigning zero
to each separately avoids this warning without having to add a cast.
Signed-off-by: Steve Ellcey <sellcey@mips.com>
Signed-off-by: Bernhard Reutner-Fischer <rep.dot.nop@gmail.com>
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This patch uses 'attribute_unused' to clean up a number of warnings
messages that are generated when doing a MIPS build. All of the
changes are in MIPS specific files and there are no code changes
other then adding the unused attribute where needed.
Signed-off-by: Steve Ellcey <sellcey@mips.com>
Signed-off-by: Bernhard Reutner-Fischer <rep.dot.nop@gmail.com>
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We were ending up with an unrecognised CPP token (which is not diagnosed
for assembler-with-cpp, 59805)
Signed-off-by: Bernhard Reutner-Fischer <rep.dot.nop@gmail.com>
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