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2016-10-13ARC: nptl: cancellable wrappers were broken #2Vineet Gupta
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>
2016-10-13ARC: nptl: cancellable wrappers were brokenVineet Gupta
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>
2016-10-08cleanup libc.aWaldemar Brodkorb
The nested libpthread_nonshared.a and libdl.os shouldn't be included in the static libc.a. Fixes compile issues for static builds.
2016-10-05cleanup ppc portWaldemar Brodkorb
Remove powerpc64 bits as we only support powerpc32.
2016-09-26use a single libc and deduplicate threading codeWaldemar Brodkorb
Similar to musl libc a single libc has many benefits and solves some open issues with uClibc-ng. - no pthread_mutex_* weak symbols exported anymore - applications no longer failing to link when either -lrt or -lpthread are missing for dynamic and static linking mode - smaller C library - slightly better runtime performance
2016-09-26always assume tgkill is presentWaldemar Brodkorb
We do not support 2.4 Linux kernels anyway, and almost all newer 2.6 kernels should have tgkill syscall. Cleanup the raise situation, pt-raise.c is unused, sync raise.c with latest GNU libc. Signed-off-by: Waldemar Brodkorb <wbx@uclibc-ng.org>
2016-09-26remove dead code and documentationWaldemar Brodkorb
The code was disabled a while ago in commit: 814b0901f460a246315bfa7933a661f415bdc7fa Signed-off-by: Waldemar Brodkorb <wbx@uclibc-ng.org>
2016-07-31deduplicate jmpbuf-unwind.hWaldemar Brodkorb
Reviewed-by: Max Filippov <jcmvbkbc@gmail.com>
2016-07-17cleanup PTR_MANGLE/PTR_DEMANGLE supportWaldemar Brodkorb
As this is only implemented for a few architecture and not well tested, just remove it. Reviewed-by: Max Filippov <jcmvbkbc@gmail.com>
2016-07-10x86_64: use C implementation for pthread_cond_wait/pthread_cond_timedwaitWaldemar Brodkorb
Add test case for the deadlock detection. Reported-By: Martin Willi <martin@strongswan.org>
2016-06-23libs: install backward compatibility symlinksAlexey Brodkin
Simplify the switch from uClibc to uClibc-ng. Apps already built against uClibc-0.9.x.y require .so.0 libs to present on target which in case of current uClibc-ng is not the case and those apps could not be run. This change creates symlinks from .so.1 to .so.0 for most of other libs in the same way as it was done by 23e96d89b6ab "ldso: install backward compatibility symlink by default" Signed-off-by: Alexey Brodkin <abrodkin@synopsys.com> Cc: Waldemar Brodkorb <wbx@uclibc-ng.org> Cc: Vineet Gupta <vgupta@synopsys.com> Cc: Anton Kolesov <akolesov@synopsys.com>
2016-06-18remove unused MakefilesWaldemar Brodkorb
2016-06-12xtensa: use generic lowlevellockWaldemar Brodkorb
Simplify and use generic lowlevellock. Tested-by: Waldemar Brodkorb <wbx@uclibc-ng.org> Signed-off-by: Leonid Lisovskiy <lly.dev@gmail.com>
2016-06-12metag: use generic lowlevellockWaldemar Brodkorb
Simplify and use generic lowlevellock. Tested-by: Waldemar Brodkorb <wbx@uclibc-ng.org> Signed-off-by: Leonid Lisovskiy <lly.dev@gmail.com>
2016-06-12arc: use generic lowlevellockWaldemar Brodkorb
Simplify and use generic lowlevellock. Tested-by: Waldemar Brodkorb <wbx@uclibc-ng.org> Signed-off-by: Leonid Lisovskiy <lly.dev@gmail.com>
2016-05-31ARM: nptl: Use generic lowlevellock.c, patch from glibcLeonid Lisovskiy
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>
2016-05-31arm: add non-assembly versions of pthread_spin_lock/pthread_spin_trylockWaldemar Brodkorb
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.
2016-05-28sigaction: fix for THREADS_NATIVEBaruch Siach
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>
2016-04-15replace FSF addresses with URLsNikola Forró
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>
2016-04-05remove accidentally added files while cleaning up incomplete sparcv9 supportWaldemar Brodkorb
2016-04-05nptl: remove useless text filesWaldemar Brodkorb
2016-01-10NPTL: fix infinite recursionWaldemar Brodkorb
fix infinite recursion on application exit triggered by linking libc before libpthread. Patch from OpenWrt. Reported-by: Leonid Lisovskiy <lly.dev@gmail.com>
2016-01-10NPTL: Fix __pthread_once old style declarationWaldemar Brodkorb
Trivial fix. Signed-Off-By: Leonid Lisovskiy <lly.dev@gmail.com>
2015-12-22use arch specific thread stack size for nptlWaldemar Brodkorb
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>
2015-12-17reduce stack cache size to save memory spaceWaldemar Brodkorb
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
2015-12-09Do not support localised optimizations this helps to have a global -O levelKhem Raj
Signed-off-by: Khem Raj <raj.khem@gmail.com> Signed-off-by: Waldemar Brodkorb <wbx@uclibc-ng.org>
2015-12-05remove __UCLIBC_HAVE_ASM_GLOBAL_DOT_NAME__Waldemar Brodkorb
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.
2015-11-30xtensa: avoid some compiler warningsWaldemar Brodkorb
Signed-off-by: Max Filippov <jcmvbkbc@gmail.com> Signed-off-by: Waldemar Brodkorb <wbx@uclibc-ng.org>
2015-10-22NPTL/ARC: fix __lll_lock_wait_private redefinition for static linksVineet Gupta
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>
2015-10-12fix static binaries linked with pthread and compiled with sspWaldemar Brodkorb
Move TLS initialization for static builds up to the calling function as suggested by Daniel Fahlgren. Reported-By: Daniel Fahlgren <daniel@fahlgren.se>
2015-10-08xtensa: support call0 ABIMax Filippov
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>
2015-09-15NPTL: fix CFLAGS for cancellation pointsMax Filippov
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>
2015-08-22quieten compile warningsWaldemar Brodkorb
Sync with glibc, quietens gcc warnings.
2015-08-14add mkstemps, mkstemps64 and mkostemps, mkostemps64 functionsRomain Naour
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>
2015-08-02sh: fix static linking issueWaldemar Brodkorb
2015-08-02simplify, as the other does not work correctly, suggested by tgWaldemar Brodkorb
2015-07-22fix static builds of pthread apps for x86/x86_64Waldemar Brodkorb
Found via buildroot autobuilder.
2015-07-11Merge branch '1.0' of git+ssh://uclibc-ng.org/git/uclibc-ng into 1.0Waldemar Brodkorb
2015-07-11builtin_unreachable is not available for older gccWaldemar Brodkorb
2015-06-30NPTL/arc: notify kernel of the TP valueVineet Gupta
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>
2015-06-23xtensa: fix stack frame size for NPTLMax Filippov
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>
2015-06-18Fix libgcc_s_resume issue with gcc 5.1Thomas Petazzoni
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>
2015-06-10buildsys: pregen depends on xlocaleBernhard Reutner-Fischer
pt-initfini eventually depends on xlocale Signed-off-by: Bernhard Reutner-Fischer <rep.dot.nop@gmail.com>
2015-04-13buildsys: tweak ucontext_i.h prerequisitesBernhard Reutner-Fischer
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>
2015-04-12remove more of the link_warningsWaldemar Brodkorb
Only the stub warnings left for now.
2015-03-29merge uClibc git masterWaldemar Brodkorb
2015-03-26NPTL: SH: silence warningBernhard Reutner-Fischer
Signed-off-by: Bernhard Reutner-Fischer <rep.dot.nop@gmail.com>
2015-03-22nptl/atfork: Hide pthread_atfork in shared versionsKhem Raj
Signed-off-by: Khem Raj <raj.khem@gmail.com> Signed-off-by: Bernhard Reutner-Fischer <rep.dot.nop@gmail.com>
2015-03-17nptl: fix exclusion of pthread_setconcurrency.cBernhard Reutner-Fischer
Signed-off-by: Bernhard Reutner-Fischer <rep.dot.nop@gmail.com>
2015-03-13unistd.h: put getppid under XOPEN2K8Bernhard Reutner-Fischer
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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