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2022-07-26Added support for creation of Static Position-Independent Executables (PIE) ↵linted
on i386, x86_64, and arm. This patch adds the generation of rcrt1.o which is used by gcc when compiling with the --static-pie flag. rcrt1.o differs from crt1.o and Scrt1.o in that it the executable has a dynamic section but no relocations have been performed prior to _start being called. crt1.o assumes there to be no dynamic relocations, and Scrt1.o has all relocations performed prior to execution by lsdo. The new reloc_static_pie function handles parsing the dynamic section, and performing the relocations in a architecture agnostic method. It also sets _dl_load_base which is used when initalizing TLS to ensure loading from the proper location. This allows for easier porting of static-pie support to additional architectures as only modifications to crt1.S to find the load address are required. Signed-off-by: linted <linted@users.noreply.github.com>
2022-05-12DnsLookup: Configurable dnsQueryId generation including randomhanishkvc
Dns lookup logic has been updated to provide a configurable compile time selection of dns query id generation logics, including random, where possible, instead of the previous simple counter mode. This should make dns poison attempts more difficult. The uclibc developers wish to thank the white hat teams which alerted the community about the possible weakness in the dns path, given the increased resources with adversaries today. Given that embedded systems may or may not have sources for trying to generate random numbers, and also to try and keep the load on the system low, by default it uses the standard random prng based logic to indirectly generate the ids. However if either urandom or else if realtime clock is available on the target, then the same is used to reseed the prng periodically in a slightly non deterministic manner. Also additional transform (one way where possible) is used to avoid directly exposing the internal random sequence. The dns lookup logic maintains its own state wrt the random prng functions, so that other users of the library's random prng are not affected wrt their operations with the prng. Note to Platform developers: If you want to change from the default prngplus based logic, to one of the other logics provided, then during compile/config time you can switch to one of these additional choices wrt dns query id generation, by using make config and companions. If your platform doesnt support urandom nor a realtime clock backed by a source with sufficient resolution, and or for some reason if you want to revert to previous simple counter, rather than the transformed random prng plus logic, you can force the same at compile time by selecting SimpleCounter mode. If you want to increase the randomness of the generated ids, and dont mind the increased system load and latency then you could select the Urandom mode during config. Do note that it will be dipping into the entropy pool maintained by ur system. If your target has a system realtime clock available and exposed to user space, and inturn if you want to keep the underlying logic simple, you could try using the clock option from the config. However do note that the clock should have nanosecond resolution to help generate ids which are plausibly random. Also improvements to processor and or io performance can affect this. Wrt the URandom and Clock modes, if there is a failure with generation of the next random value, the logic tries to fallback to simple counter mode. If you want to change the underlying logic to make it more random and or more simple, look at dnsrand_setup and dnsrand_next. Signed-off-by: hanishkvc <hanishkvc@gmail.com>
2020-12-24GNU hash style support disable for MIPSWaldemar Brodkorb
2020-10-02kvx: add support for kvx arch to uClibc-ngYann Sionneau
This commit adds support for Kalray VLIW family (kvx) Kalray kv3 core is embedded in Kalray Coolidge SoC. This core which is the third of the KV family has the following features: 32/64 bits execution mode 6-issue VLIW architecture 64 x 64bits general purpose registers SIMD instructions little-endian In order to build a usable toolchain, build scripts are provided at the following address: https://github.com/kalray/build-scripts. Kalray uses FOSS which is available at https://github.com/kalray This includes Linux kernel, uClibc-ng, gcc, binutils, etc. Signed-off-by: Clément Léger <cleger@kalray.eu> Signed-off-by: Guillaume Thouvenin <gthouvenin@kalray.eu> Signed-off-by: Laurent Thevenoux <lthevenoux@kalray.eu> Signed-off-by: Marc Poulhies <mpoulhies@kalray.eu> Signed-off-by: Marius Gligor <mgligor@kalray.eu> Signed-off-by: Yann Sionneau <ysionneau@kalray.eu>
2020-09-21Support b64_ntop(), b64_pton() (bsd-compat)Waldemar Brodkorb
Signed-off-by: akater <nuclearspace@gmail.com>
2019-11-08riscv64: implement NPTL/TLSWaldemar Brodkorb
basically from or1k port of uClibc-ng, with fixes for structures in pthreadtypes.h from 64 bit architectures. 18 testsuite failures counted.
2019-11-01riscv64: add shared library supportWaldemar Brodkorb
2018-08-10enable NPTL on TARGET_armChristophe Lyon
* extra/Configs/Config.in: enable UCLIBC_HAS_THREADS_NATIVE on TARGET_arm. Signed-off-by: Christophe Lyon <christophe.lyon@st.com>
2018-06-10risc-v: initial 64 bit port, static only (no TLS/NPTL)Waldemar Brodkorb
Only a simple hello world is tested in qemu system emulation.
2018-04-17libdl: remove LDSO_NO_CLEANUPWaldemar Brodkorb
2018-03-12tile: add basic support for tilegxWaldemar Brodkorb
This adds basic support for tile architecture. Only static binaries, no ld.so or threading support. Tested with qemu-tilegx only.
2018-01-31remove arc4random (rc4 based)Waldemar Brodkorb
OpenBSD arc4random is using chacha20 cipher algorithm for a long time. This copy is still based on deprecated rc4 cipher algorithm. We could either update the arc4random.c or drop it. Drop it. Users should better use libbsd when using arc4random interface. Musl/glibc does not have arc4random either.
2018-01-02remove COMPAT_ATEXITWaldemar Brodkorb
2017-12-31m68k: add NPTL/TLS supportWaldemar Brodkorb
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.
2017-11-19csky: port to uclibc-ngGuo Ren
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>
2017-08-20arc: Merge ARCv2 string routines in generic ARC .S filesAlexey Brodkin
In cde74b83f9b2 "ARC: remove special CFLAGS/LDFLAGS handling" we got rid of CONFIG_ARC_CPU_HS which was used to select ARCv2-specific implementation of optimized string routines. So now ARCv2-tuned memset/memcpy/strcmp are not used, instead those for ARC700 used for both ARC700 and ARCHS. Without uClibc config option we may only tell which CPU type we're targeting by built-in defines of GCC. I.e. no more conditional file inclusion in Makefiles. That leaves us only one option - merge both implementations in 1 file and use ifdefs. Signed-off-by: Alexey Brodkin <abrodkin@synopsys.com>
2017-06-23sparc64: add basic supportWaldemar Brodkorb
No NPTL, no LDSO support. Bootup with Busybox Ash in Qemu working. Testuite shows only two failures, but mksh continue/break support doesn't work.
2017-05-14or1k: add NPTL/TLS supportWaldemar Brodkorb
Signed-off-by: Waldemar Brodkorb <wbx@openadk.org>
2017-04-17remove old regex implementationWaldemar Brodkorb
2017-04-17remove old fnmatch implementationWaldemar Brodkorb
2017-03-20remove RPC implementationWaldemar Brodkorb
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.
2017-02-01add experimental aarch64 supportWaldemar Brodkorb
Ported over from GNU C Library and runtime tested in Qemu.
2017-01-24Restore UCLIBC_HAS_LFS as "always enabled"Alexey Neyman
Otherwise, buildroot rejects uClibc-ng in an external toolchain. Signed-off-by: Alexey Neyman <stilor@att.net>
2017-01-22nds32: add NPTL/TLS, *context function, libm changes and code cleanupVincent Ren-Wei Chen
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>
2016-12-31argp/iconv needs wchar enabledWaldemar Brodkorb
2016-12-29locale: needs libiconvWaldemar Brodkorb
2016-12-23remove UCLIBC_LINUX_MODULE_26Waldemar Brodkorb
The syscall wrappers are not required and other C libraries do not provide them. Busybox modutils.c must be patched so that syscall() is used for uClibc-ng. Signed-off-by: Waldemar Brodkorb <wbx@openadk.org>
2016-12-21remove obstack supportWaldemar Brodkorb
Remove __UCLIBC_HAS_OBSTACK__ as it isn't very uptodate and maintained part. It shouldn't be required for any software and mostly shipped with stuff which use it. (f.e. binutils-gdb)
2016-12-20remove __MALLOC_GLIBC_COMPAT__ optionWaldemar Brodkorb
This option is enabled for a long time and I see no useful case where we should be incompatible to glibc here.
2016-12-20add stub implementation for libintl/gettextWaldemar Brodkorb
These adds the stubs from gettext-tiny 0.0.5 from here: https://github.com/sabotage-linux/gettext-tiny
2016-12-14add libiconv-tiny implementationWaldemar Brodkorb
To use it enable UCLIBC_HAS_LIBICONV, then iconv_open/iconv_close should be available.
2016-11-29remove libresolv stubWaldemar Brodkorb
2016-11-27remove UCLIBC_HAS_LFSWaldemar Brodkorb
2016-11-27remove libnsl stubWaldemar Brodkorb
2016-11-04nios2: sync support with glibcWaldemar Brodkorb
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.
2016-11-03microblaze: add NPTL/TLS support from GNU libcWaldemar Brodkorb
Not perfect, but a starting point. Some tests of the test suite are failing.
2016-10-16linuxthreads: allow to choose on all supported architecturesWaldemar Brodkorb
To analyze or debug any linuxthreads problems it is useful to have the ability to have a full gdb on the target available. At the moment you could only debug stuff on microblaze. Now we can verify that linuxthreads are working fine for every supported architecture.
2016-09-30remove linux kernel 2.4 modules supportWaldemar Brodkorb
2016-09-30ubacktrace/uargp: remove unneeded and false linker scriptsWaldemar Brodkorb
2016-09-26locale: cleanup supportWaldemar Brodkorb
Enable locale application to be build when utils are build. Remove useless compile and link warnings. Default to minimal locale builds. Signed-off-by: Waldemar Brodkorb <wbx@uclibc-ng.org>
2016-08-27remove DOMULTI supportWaldemar Brodkorb
A single test with targeting ARM showed that this feature seems bit rotted. Remove DOMULTI and simplify Makefiles.
2016-06-30nds32: add support for new architectureWaldemar Brodkorb
Add support for Andes Technology NDS32 architecture. See here http://www.andestech.com/en/index/index.htm for more informaton. Verification of the port from an older uClibc port was done on a sponsored AG101p board. The testsuite only has 5 errors, three are related to an existing bug in dlclose() with LT.old, also happening on cris32 and m68k. Failures to fallocate/posix_fallocate are unresolved. Thanks to Andes Technology sponsoring the hardware and being very helpful while doing the uClibc-ng porting. Signed-off-by: Waldemar Brodkorb <wbx@uclibc-ng.org>
2016-06-19argp: select getopt / getopt_longWaldemar Brodkorb
Select required features. Fix intendation. Reported-by: Leonid Lisovskiy <lly.dev@gmail.com>
2016-06-07ssp: remove SSP legacy codeWaldemar Brodkorb
Nobody should use gcc 3.3 nowadays.
2016-06-01remove MJN only debug messagesWaldemar 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
2016-03-26frv: enable in configWaldemar Brodkorb
2016-01-25hppa: unbreak toolchain buildingWaldemar Brodkorb
At least allow to build a toolchain for hppa. Sync some headers with glibc.
2016-01-06extra/Configs/Config.in: add syncfs() to Linux-specific functionsAnthony G. Basile
syncfs() was recently added (commit dfa593d4d). But man sync(2) specifies that syncfs() is Linux-specific. This was overlooked in the original commit so we add it to the set of Linux-specific functions supported by uClibc. Signed-off-by: Anthony G. Basile <blueness@gentoo.org>
2016-01-03remove pregenerated locale support, we don't support itWaldemar Brodkorb