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Port over NPTL/TLS support from GNU C Library.
In the first step only the slower syscall is used for TLS
access. The uClibc-ng testsuite shows 79 errors, so their
is room for bugfixes and improvements.
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Signed-off-by: Guo Ren <ren_guo@c-sky.com>
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From or1k-glibc from blueCmd, his commit "Fix TLS, removed too much in
rebase".
Signed-off-by: Stafford Horne <shorne@gmail.com>
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Fix iteration over signals, synced with GNU C library code and
pending patches. Issues found when running dhcpcd with hook
scripts. (exit status 127)
Reported-By: kapeka <kapeka@bering-uclibc.de>
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Follow the steps to build c-sky uclibc linux system:
1. git clone https://github.com/c-sky/buildroot.git
2. cd buildroot
3. make qemu_csky_ck810_uclibc_defconfig
4. make
Follow the buildroot/board/qemu/csky/readme.txt to run.
This buildroot toolchain is pre-build, But you can rebuild
the c-sky uclibc-ng alone and install it to the buildroot
sysroot manually.
We'll try our best to improve the uclibc-ng continuously.
Signed-off-by: Guo Ren <ren_guo@c-sky.com>
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For noMMU targets we need a pthread_atfork dummy, otherwise
libraries like libressl using pthread_atfork, but not fork()
for itself, can not be used. But software like curl with
ssl support linking against libressl still work fine on noMMU
targets.
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Signed-off-by: Stafford Horne <shorne@gmail.com>
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Signed-off-by: Stafford Horne <shorne@gmail.com>
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warning: unused variable 'self' [-Wunused-variable]
Signed-off-by: Guo Ren <ren_guo@c-sky.com>
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The recvmmsg and sendmmsg is very important for UDP stream application.
If we only use recvmsg for UDP stream, it will only copy one mtu size
of data in a syscall. And recvmmsg copy as many as you want in a syscall.
So recvmmsg is more efficient,and some applications will depends on the
recvmmsg and sendmmsg, eg: UDP media stream player.
Signed-off-by: Guo Ren <ren_guo@c-sky.com>
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Pthread pid caching was removed recently but an assert is still
present which checks pthread->pid, and this breaks the build when
debugging is enabled.
Reported-By: Bogdan Harjoc <harjoc@gmail.com>
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GDB 8.0 is compiled and linked with g++, but the
linking of static targets (f.e. coldfire) fails,
without declaring the functions in thread_db.h
extern C.
The compilation of gdb errors out with:
thread-db.o: In function `thread_db_init()':
thread-db.c:(.text+0x5b6): undefined reference to `td_ta_new(ps_prochandle*, td_thragent**)'
thread-db.c:(.text+0x61e): undefined reference to `td_thr_get_info(td_thrhandle const*, td_thrinfo*)'
thread-db.c:(.text+0x632): undefined reference to `td_symbol_list()'
..
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Similar to a changeset planned in GNU C library remove
any assembly code from sysdep-cancel.h. This allows
to port to new architectures in a simpler way.
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Following glibc commit a358c805300e358e30d4788a6f19c69988623a5c
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Signed-off-by: Waldemar Brodkorb <wbx@openadk.org>
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For the linux kernel (since 2.6.12) MAKE_THREAD_CPUCLOCK
macro-like computation should be used to get clockid.
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cleanup unused and unsupported code.
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Signed-off-by: Waldemar Brodkorb <wbx@openadk.org>
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The included RPC implementation is ipv4 only.
Other C library projects have either deprecated the internal
RPC implementation (GNU C Library) or never implemented such
functionality (musl C Library). The latest rpcbind release (0.2.4)
checks for libtirpc and does not allow to be build with uClibc-ng
RPC without patching. The common use case for RPC nowadays is to
use rpcbind together with nfs-utils to provide NFS server or client
support to a system.
The included RPC implementation does create issues with duplicate
symbol failures when statically compiling with RPC enabled.
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As reported by Buildroot developers these files causing static
linking issues. The original contribution with the ARM unwind-resume
rework and GNU libc sync was made before the combined libc change.
But the patch was applied later, after the libc change and
it seems the test coverage for static linking didn't catch it in
the regression testing. Remove the files.
Signed-off-by: Waldemar Brodkorb <wbx@openadk.org>
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Ported over from GNU C Library and runtime tested in Qemu.
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Follow GNU C Library from c579f48edba88380635ab98cb612030e3ed8691e
and remove the PID caching. These simplifies the architecture specific
assembly code.
The run of the test suite found no regressions, it even solves
some of the test failures for x86/x86_64/sparc.
Reviewed-by: Max Filippov <jcmvbkbc@gmail.com>
Reviewed-by: Vineet Gupta <Vineet.Gupta1@synopsys.com>
Acked-by: Matthew Fortune <Matthew.Fortune@imgtec.com>
Acked-by: Alexey Brodkin <Alexey.Brodkin@synopsys.com>
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This commit includes following features.
1. Support NPTL/TLS
2. Add libm function which is used to handle FP rounding and excpetions
(ex: fclrexcpt,fedisblxcpti,feenablxcpt... )
3. Add *context function for operating user context
(ex: setcontext,getcontext,makecontext... )
4. Change the return flow from signal handler
5. Cleanup of old code
The testsuite only has 2 errors, tst-cpuclock1 and tst-cputimer1,
which are related to timing accuracy. (math and locale tests are disabled)
Signed-off-by: Vincent Ren-Wei Chen <vincentc@andestech.com>
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We do not support symbol versioning, so remove these weak aliases.
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uClibc-ng 1.0.20 fixed static linking with "libdl" by adding all libdl functions
into the libc. On xtensa, though, libdl contains an unresolved reference that is
satisfied by the ld.so - which is not a part of the linking in a static case.
Signed-off-by: Alexey Neyman <stilor@att.net>
Acked-by: Max Filippov <jcmvbkbc@gmail.com>
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As __UCLIBC_HAS_GETTEXT_AWARENESS__ is never defined, this is
mostly dead code. It is planned to integrate libiconv-tiny
and gettext-tiny into uClibc-ng after the next release, so
that more software packages can be used without modification.
Remove any _/_N macro usage.
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Since librt and libpthread are now integrated into libc, including
unwind-resume and unwind-forcedunwind implementations of unwind code
makes no sense. Only unwind-forcedunwind is now included with
functions hidden to avoid them overriding the ones from libgcc_s.
* libpthread/nptl/sysdeps/generic/unwind-resume.h: New. Define
generic PERSONALITY_PROTO and PERSONALITY_ARGS and set
HAVE_ARCH_UNWIND_RESUME to 0.
* libpthread/nptl/sysdeps/pthread/unwind-resume.c: Move...
* libpthread/nptl/sysdeps/generic/unwind-resume.c: ... here. Include
generic implementation of _Unwind_Resume on the condition that
!HAVE_ARCH_UNWIND_RESUME. Make functions hidden to prevent them
from overriding libgcc_s's ones.
* libpthread/nptl/sysdeps/pthread/unwind-forcedunwind.c: Likewise.
* libpthread/nptl/sysdeps/arm/unwind-resume.h: New. Define
ARM-specific PERSONALITY_PROTO and PERSONALITY_ARGS and set
HAVE_ARCH_UNWIND_RESUME to 1.
* libpthread/nptl/sysdeps/arm/arm-unwind-resume.c,
* libpthread/nptl/sysdeps/arm/pt-arm-unwind-resume.c,
* libpthread/nptl/sysdeps/arm/rt-arm-unwind-resume.c: New.
ARM-specific implementations of _Unwind_Resume resp. for libc,
libpthread and librt.
* libpthread/nptl/sysdeps/Makefile.commonarch: Remove both
arm-unwind-resume and rt-arm-unwind-resume from
libpthread_arch_CSRC.
* libpthread/nptl/sysdeps/unix/sysv/linux/arm/unwind-forcedunwind.c,
* libpthread/nptl/sysdeps/unix/sysv/linux/arm/unwind-resume.c: Remove.
Signed-off-by: Ignacy Gawędzki <ignacy.gawedzki@green-communications.fr>
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This reverts commit c13f823941b103cf744929e5afcb3e2bc1342354.
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There is not possible to use use fork() on noMMU target, so exporting
pthread_atfork() for such target is useless.
A program using pthread_atfork() will likely fail at runtime due to the
error code returned by this function.
Signed-off-by: Romain Naour <romain.naour@gmail.com>
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These functions are used by firefox for example.
Tested with running firefox on x86 system.
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Only static linking is supported for now.
More debugging and analyzing for ld.so, TLS and NPTL
is required. But at least you can bootup a static
root fileystem in Qemu.
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Not perfect, but a starting point.
Some tests of the test suite are failing.
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Somehow this got removed with f1d7505e40654a185843bdc8f1cf1fd00ab55c04.
Reported-by: Thomas Petazzoni <thomas.petazzoni@free-electrons.com>
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There was a deadlock hanging in a sycall to futex,
which should be solved now.
Signed-off-by: Waldemar Brodkorb <wbx@uclibc-ng.org>
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Despite the prev fix, tst-mqueue3 was still segfaulting.
The issue was BLINK register not restored properly for return
00002690 <mq_timedsend>:
2690: sub r9,r25,0x448
2698: ld r10,[r9]
269c: cmp r10,0
26a0: beq -36
26a4: st.aw blink,[sp,-4]
26a8: st.aw r0,[sp,-4]
26ac: st.aw r1,[sp,-4]
26b0: st.aw r2,[sp,-4]
26b4: st.aw r3,[sp,-4]
26b8: st.aw r4,[sp,-4]
26bc: bl 1e28 <__librt_enable_asynccancel>
26c0: mov r9,r0
26c4: ld.ab r4,[sp,4]
26c8: ld.ab r3,[sp,4]
26cc: ld.ab r2,[sp,4]
26d0: ld.ab r1,[sp,4]
26d4: ld.ab r0,[sp,4]
26d8: ld.ab blink,[sp, 4] <---- function return BLINK
26dc: mov r8,182
26e0: trap_s 0
26e2: cmp r0,-1024
26e6: st.aw r0,[sp,-4]
26ea: mov r0,r9
26ee: bl 1e90 <__librt_disable_asynccancel> <-- BLINK clobbered
to next PC
26f2: ld.ab r0,[sp,4] <----| loops here until sp is out of bound
26fa: cmp r0,-1024 |
26fe: jls [blink] -----|
2702: b 15d8
2706: nop_s
So the fix was to retain BLINK on stack before function call, and pop it
later
- 26d8: ld.ab blink,[sp, 4]
+ 26d8: ld blink,[sp] <--- restore BLINK, but retain on stack
26dc: mov r8,182
26e0: trap_s 0
26e2: cmp r0,-1024
26e6: st.aw r0,[sp,-4]
26ea: mov r0,r9
26ee: bl 1e90 <__librt_disable_asynccancel>
26f2: ld.ab r0,[sp,4]
+ 26f6: ld.ab blink,[sp,4] <--- finally pop BLINK
26fa: cmp r0,-1024
26fe: jls [blink]
Reported-by: Eugeniy Paltsev <paltsev@synopsys.com>
Cc: Alexey Brodkin <abrodkin@synopsys.com>
Signed-off-by: Vineet Gupta <vgupta@synopsys.com>
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This was reported as uClibc test suite failures of tst-mqueue3 and
tst-mqueue5.
The syscall args were getting clobbered, so use scratch regs which are
not used for syscall args
00002690 <mq_timedsend>:
; SINGLE_THREAD_P
2690: sub r1,r25,0x448 <--- clobers r1, r2
2698: ld r2,[r1]
269c: cmp r2,0
26a0: bz mq_timedsend_nocancel
; DOCARGS (saves syscall args but r1, r2 clobbered already)
26a4: st.aw blink,[sp,-4]
26a8: st.aw r0,[sp,-4]
26ac: st.aw r1,[sp,-4]
26b0: st.aw r2,[sp,-4]
26b4: st.aw r3,[sp,-4]
26b8: st.aw r4,[sp,-4]
26bc: bl 1e28 <__librt_enable_asynccancel>
Reported-by: Eugeniy Paltsev <paltsev@synopsys.com>
Cc: Alexey Brodkin <abrodkin@synopsys.com>
Signed-off-by: Vineet Gupta <vgupta@synopsys.com>
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The nested libpthread_nonshared.a and libdl.os shouldn't be included
in the static libc.a. Fixes compile issues for static builds.
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