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2016-06-23ARC: remove deprecated -msoft-float from CFLAGSAlexey Brodkin
"-msoft-float" makes no sense for ARC because there's no such thing as "-mhard-float" on ARC. Instead we use our own "-mfpu=XXX" option when a particular floating-point related HW feature is enabled in the ARC core. We used to live with that phony option for quite some time but with migration to newer GCC following warning now appears: -------------------->8----------------- arc-linux-gcc: warning: ‘-msoft-float’ is deprecated cc1: warning: ‘-msoft-float’ is deprecated [enabled by default] -------------------->8----------------- And that warning gets printed for each invocation of gcc with the option in question, which makes compilation output barely readable. So we disable that phony option for ARC now. 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>
2016-06-23ARC: Implement .note.ABI-tag section in crt1.SAnton Kolesov
Linux Standard Base specifies section .note.ABI-tag that can be considered as a marker for ELF files targeted to Linux systems. See https://refspecs.linuxfoundation.org/LSB_1.2.0/gLSB/noteabitag.html This section, for example, is used by the GDB to identify Linux ELFs as compared to baremetal ELFs that do not have this section. Signed-off-by: Anton Kolesov <Anton.Kolesov@synopsys.com> Cc: Vineet Gupta <Vineet.Gupta1@synopsys.com>
2016-06-22ldso: fix dlsym hang when reloading DSOsLeonid Lisovskiy
It can happen under certain cases that the DSO had refcount 0, but was already loaded. (NODELETE flag is set, or it is pulled in via both NEEDED dependency and explicit dlopen()). Add extra reference count for NODELETE objects, this will ensure that the reference count never drops below one. It is improved version of http://lists.busybox.net/pipermail/uclibc/2013-June/047826.html Signed-off-by: Leonid Lisovskiy <lly.dev@gmail.com>
2016-06-22ldso: Consistently set & use DL_OPENED flag in both ld.so and libdlLeonid Lisovskiy
Previously, DL_OPENED flag was set in libdl only and never used. Set it centralized in _dl_load_elf_shared_library() & use it in both ld.so and libdl. Additionally, rename it to DL_OPENED2 for clarity. Signed-off-by: Leonid Lisovskiy <lly.dev@gmail.com>
2016-06-22test: inet: Fix warning messagesEugeniy Paltsev
This patch is to address a proposal by Waldemar in this thread: http://mailman.uclibc-ng.org/pipermail/devel/2016-June/001006.html tst-ethers-line and tst-ethers require /etc/ethers to exist, otherwise user should create it manually. Add this info to warning message. Signed-off-by: Eugeniy Paltsev <Eugeniy.Paltsev@synopsys.com>
2016-06-21inet/getaddrinfo: fix AF_V4MAPPED behavior for non IPv6 host resolutionWenzel, Alexander
When trying to resolve a hostname by getaddrinfo() using some specific settings, it will always return -EAI_NONAME (Name or service not known). To reproduce this behavior, you need to request an IPv6 address with the additional AF_V4MAPPED flag set from an non IPv6 capable hostname. If you choose a IPv4/IPv6 capable hostname like google.com, everything works fine. This patch is more or less a port [1][2] from the glibc and their behavior for the AF_V4MAPPED flag. To test the bug you can use the following snippet. ---- 8< ---- int ret; struct addrinfo* result; struct addrinfo hints; memset(&hints, 0, sizeof(struct addrinfo)); hints.ai_family = AF_INET6; hints.ai_flags = AI_V4MAPPED; ret = getaddrinfo("test.com", NULL, &hints, &result); printf("getaddrinfo(): %i", ret); ---- 8< ---- [1] https://sourceware.org/git/?p=glibc.git;a=commit;f=sysdeps/posix/getaddrinfo.c;h=925c3c5c71596c02f7e58a0ffcdcaae44eb065c1 [2] https://sourceware.org/git/?p=glibc.git;a=commit;f=sysdeps/posix/getaddrinfo.c;h=28977c2c1acb789660ad47e0d88e42486059c916 Signed-off-by: Alexander Wenzel <alexander.wenzel@qsc.de>
2016-06-19bugfix: ARM: memset.S: use unsigned comparisonsLucian Cojocar
The 'BLT' instruction checks for *signed* values. So if a3, length parameter of memset, is negative, then value added to the PC will be large. memset(buf, 0xaa, 0xffff0000) triggers the bug. GDB session without the patch: """ $ gdb ./main-buggy-memset.elf -q Reading symbols from ./main-buggy-memset.elf...done. (gdb) x/i memset 0x8770 <memset>: mov r3, r0 (gdb) r Starting program: /root/memset/main-buggy-memset.elf Program received signal SIGSEGV, Segmentation fault. 0x00048808 in ?? () """ The $pc is outside of the memset function because: """ (gdb) x/i $pc => 0x87e4 <memset+116>: add pc, pc, r2, lsl #2 (gdb) info reg $r2 r2 0x10007 65543 """ GDB session with the bug fixed (patch applied): """ $ gdb ./main-fixed-memset.elf -q Reading symbols from ./main-fixed-memset.elf...done. (gdb) x/i memset 0x8770 <memset>: mov r3, r0 (gdb) r Starting program: /root/memset/main-fixed-memset.elf Program received signal SIGSEGV, Segmentation fault. memset () at libc/string/arm/memset.S:92 92 libc/string/arm/memset.S: No such file or directory. (gdb) x/i $pc => 0x87b0 <memset+64>: stmia r3!, {r1, r12} (gdb) info reg $r3 r3 0x15000 86016 (gdb) info proc mappings process 5822 Mapped address spaces: Start Addr End Addr Size Offset objfile 0x8000 0xb000 0x3000 0x0 /root/memset/main-fixed-memset.elf 0x12000 0x15000 0x3000 0x2000 /root/memset/main-fixed-memset.elf 0xb6fff000 0xb7000000 0x1000 0x0 [sigpage] 0xbefdf000 0xbf000000 0x21000 0x0 0xffff0000 0xffff1000 0x1000 0x0 [vectors] (gdb) info reg $sp sp 0x14d78 0x14d78 """ GDB crashes inside the memset function, on the store instruction. This time the crash is (as expected) because of a memory access imediately after the memory region that contains the stack -- the buffer that's being memset'd is allocated on the stack. Signed-off-by: Lucian Cojocar <lucian.cojocar@vu.nl>
2016-06-19argp: select getopt / getopt_longWaldemar Brodkorb
Select required features. Fix intendation. Reported-by: Leonid Lisovskiy <lly.dev@gmail.com>
2016-06-19or1k: add dummy sys/user.h for straceWaldemar Brodkorb
2016-06-18remove unused MakefilesWaldemar Brodkorb
2016-06-16test: regex: Make testregex return error countVlad Zakharov
Testregex returned 0 even when some sub-tests inside the testregex failed. Now it returns error count. Signed-off-by: Vlad Zakharov <vzakhar@synopsys.com>
2016-06-15Fix hardcoded mmap offsetEugeniy Paltsev
mmap offset must be a multiple of the page size. It was hardcoded to 4K, so mmap2 test failed on non-4K page size architectures. Now we get page size using sysconf(_SC_PAGE_SIZE). Build and run tests done on nsim arc hs38. Signed-off-by: Eugeniy Paltsev <Eugeniy.Paltsev@synopsys.com>
2016-06-15sysconf: Support _SC_(AV)?PHYS_PAGES.Nicolas Cavallari
Do it by following the trail of the existing commented code, which implemented it by calling get_phys_pages() and get_avphys_pages(). This patch implements these two functions, which are also glibc extensions. Some program/libraries (e.g. libuv) assumes that sysconf(_SC_PHYS_PAGES) works on linux and never check for -1, thus they report an insane amount of memory. Signed-off-by: Nicolas Cavallari <nicolas.cavallari@green-communications.fr>
2016-06-15test: mmap2 is not ARM specificWaldemar Brodkorb
2016-06-13add MAINTAINERS informationWaldemar Brodkorb
2016-06-12tests: add %ms scanf format testMax Filippov
Signed-off-by: Max Filippov <jcmvbkbc@gmail.com>
2016-06-12Fix return value of fwrite when a 'hard' error occursJan Vangorp
When a 'hard' error occurs, fwrite reports that all data was written or buffered even if that is not the case. It should report how much data was actually written and buffered. Signed-off-by: Jan Vangorp <jan.vangorp_ext@softathome.com>
2016-06-12Fix infinite loop when fopencookie custom write returns 0 on errorJan Vangorp
The man page for fopencookie prescribes that custom write functions should return 0 on error (and should definitely not return a negative value) [1]. However, the uClibc implementation expects a negative return value in case of an error (libc/stdio/_WRITE.c). If the write function returns 0 on error, we drop into an infinite loop if the error persists. This patch wraps the user supplied write function such that a 0 return value is converted to -1. errno is first set to EAGAIN such that if the custom write function does not set errno in case of error, this is treated as a "soft" error. Custom write functions that cater towards uClibc and _do_ return a negative value are not affected. If no custom write function is supplied, set errno to EINVAL such that this condition is treated as a "hard" error. Previously the behaviour depended on whether the last error before the write happened to be a "hard" or a "soft" error. [1] http://git.kernel.org/cgit/docs/man-pages/man-pages.git/tree/man3/fopencookie.3?id=6c0d0ef0c7a9c4bcf805c6f9e9bc1ef1c3865ea0#n164 Signed-off-by: Jan Vangorp <jan.vangorp_ext@softathome.com>
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>
2016-06-08test: add new mmap tests from glibcWaldemar Brodkorb
Rename mmap2 test as this is a ARM specific test, only execute on ARM systems. Add more new tests from glibc.
2016-06-07ssp: remove SSP legacy codeWaldemar Brodkorb
Nobody should use gcc 3.3 nowadays.
2016-06-07microblaze: remove unused dead codeWaldemar Brodkorb
These files are not used, no regression found while running the testsuite.
2016-06-05test: quieten some gcc warningsWaldemar Brodkorb
Fix some gcc warnings while compiling the testsuite.
2016-06-04test: sync with GNU libcWaldemar Brodkorb
See here: https://sourceware.org/git/gitweb.cgi?p=glibc.git;a=commit;h=900056024b75eae8b550d7fee1dec9e71f28344e Fixes testsuite runs on newer kernels.
2016-06-03ppc: cleanup unsupported ppc64 codeWaldemar Brodkorb
Remove ppc64 bits and bytes, as we don't support ppc64 and it makes the code more readable without the dead code.
2016-06-01remove MJN only debug messagesWaldemar Brodkorb
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>
2016-05-31linuxthreads.old: Fix segfault when pthread_mutex_unlock() called against ↵Leonid Lisovskiy
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>
2016-05-31tests: Take in account Makefiles that have meaning for rebuild only.Leonid Lisovskiy
Currently, targets dependancy list don't include Makefile.in, this leads to incomplete rebuild after target's compiler/linker flags was changed. Use "$(wildcard)" function due to Makefile.in could be absent in subdirectory. 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.
2016-05-29bump for releasev1.0.15Waldemar Brodkorb
2016-05-29mips: allow to disable prefetch support in memcpy/memsetWaldemar Brodkorb
There exist some problem with the new memcpy/memset functions imported from GNU libc/newlib. If you have any problem with the new MIPS optimized assembly try to disable prefetching support. Thanks to Rene Nielsen and Matthew Fortune analyzing the problem so far.
2016-05-28buildsys: Fix broken link.asneeded functionLeonid Lisovskiy
Both $(CC_FLAG_ASNEEDED) and $(CC_FLAG_NO_ASNEEDED) never become "y", must check for non-empty strings. To keep make 3.80 compatibility "$(if" used only. Fixes: 7da4d1e7 "buildsys: do not use $(and)". Signed-off-by: Leonid Lisovskiy <lly.dev@gmail.com>
2016-05-28ldso: Force disable -mlong-calls when compiling ldso for ARCAlexey Brodkin
Even though by default for ARC uClibc gets compiled with disabled long-calls user may provide UCLIBC_EXTRA_CFLAGS with "-mlong-calls". With this option uClibc will be successfully compiled but later it will fail in runtime because dynamic loader cannot deal with relocations at least very early on its start. In particular it will be seen as call to non-relocated symbol _dl_parse_dynamic_info() which ends-up as a segfault like this: ------------------------>8-------------------- potentially unexpected fatal signal 11. Path: /bin/test CPU: 0 PID: 63 Comm: test Not tainted 4.5.2 #7 task: 9f13f180 ti: 9f166000 task.ti: 9f166000 [ECR ]: 0x00040000 => Insn could not be fetched [EFA ]: 0x0000283c [BLINK ]: 0x2000407c [ERET ]: 0x283c @No matching VMA found [STAT32]: 0x8008009e : IE U BTA: 0x0000283c SP: 0x5fef5ccc FP: 0x00000000 LPS: 0x20004080 LPE: 0x20004064 LPC: 0x00000000 r00: 0x20006684 r01: 0x5fef5db0 r02: 0x00000000 r03: 0x20000000 r04: 0x80808080 r05: 0x2f2f2f2f r06: 0x41464d00 r07: 0x00000080 r08: 0x000000dd r09: 0x00000000 r10: 0x00000073 r11: 0x80808080 r12: 0x2000407c r13: 0x20000000 r14: 0x5fef5e74 r15: 0x000ceb3c r16: 0x5fef5e7c r17: 0x5fef5d44 r18: 0x000ceb0c r19: 0xffffffff r20: 0x000ceb1c r21: 0x00000000 r22: 0x00000000 r23: 0x000d08a5 r24: 0x00000000 r25: 0x80808080 Segmentation fault ------------------------>8-------------------- Solution to this issue is simple we make sure dynamic loader never gets compiled with "-mlong-calls" by forcing "-mno-long-calls" on it. Signed-off-by: Alexey Brodkin <abrodkin@synopsys.com> Cc: Vineet Gupta <vgupta@synopsys.com> Cc: Anton Kolesov <akolesov@synopsys.com> Cc: linux-snps-arc@lists.infradead.org
2016-05-28Revert "disable always failing tst-signal7"Waldemar Brodkorb
This reverts commit fad6c6021feb6c2dd4a3bd5de1113994d4a9b04e. A fix was applied with a90c9ac641ba4f692f5eec209b82097d93e9b813
2016-05-28linuxthreads: Fix warnings in pthread_tryjoin_np(), pthread_timedjoin_np()Leonid Lisovskiy
Accidentally, commit 43ef9c6b3 wasn't taken into account. Signed-off-by: Leonid Lisovskiy <lly.dev@gmail.com>
2016-05-28ldso/ARC: fix DT_RELACOUNT handlingCupertino Miranda
With new binutils supporting DT_RELACOUNT, ldso was crashing as it was parsing relocs incorrectly. Apparently that code ran for first time and was never tested. Signed-off-by: Vineet Gupta <vgupta@synopsys.com>
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>
2016-05-28sparc: remove unused 64 bit support codeWaldemar Brodkorb
2016-05-24microblaze: fix linuxthreads supportWaldemar Brodkorb
Got the working code from https://github.com/jdkoftinoff/mb-linux-msli/, otherwise SIGILL while using linuxthreads.
2016-05-24microblaze: fix setjmp/longjmpWaldemar Brodkorb
Sync mostly with GNU libc implementation of setjmp/longjmp. Just generate PIC compatible code, so no difference for static builds are made. Add sysdep.h with some handy assembly macros used inside setjmp.S/__longjmp.S. This unbreaks dynamic linker support, first test suite run only shows 10 errors, which doesn't look so bad.
2016-05-24microblaze: fix ELF detection in ld.soWaldemar Brodkorb
2016-05-18remove linuxthreads.new, rename linuxthreads.oldWaldemar Brodkorb
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
2016-05-07libpthread: add missing file for gdbserverWaldemar Brodkorb
copy file from linuxthreads to be able to compile gdbserver.
2016-04-29nptl/tls tests need shared library supportWaldemar Brodkorb
2016-04-26fixup stupid mixup of Makefile copyright and C codeWaldemar Brodkorb
2016-04-26test: add memmove testWaldemar Brodkorb
Triggers a bug in MIPS code under certain circumstances, which are unclear at the moment.
2016-04-26sparc: add deprecated context switching functionsWaldemar Brodkorb
Ported over from glibc mostly without changes. Lightly tested with mongrel2 in qemu-system-sparc.
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