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uClibc-ng - small C library for embedded systems branch master updated. v1.0.15-1-g3ac3d4e
by wbx＠helium.openadk.org 31 May '16

31 May '16

This is an automated email from the git hooks/post-receive script. It was generated because a ref change was pushed to the repository containing the project "uClibc-ng - small C library for embedded systems". The branch, master has been updated via 3ac3d4e61a1de0c2d0e0d2bebf0d1b111f153f12 (commit) from 95174cb69c523a1544e5f6f20e47f7d60007e569 (commit) Those revisions listed above that are new to this repository have not appeared on any other notification email; so we list those revisions in full, below. - Log ----------------------------------------------------------------- commit 3ac3d4e61a1de0c2d0e0d2bebf0d1b111f153f12 Author: Waldemar Brodkorb <wbx(a)openadk.org> Date: Tue May 31 20:51:29 2016 +0200 arm: add non-assembly versions of pthread_spin_lock/pthread_spin_trylock 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. ----------------------------------------------------------------------- Summary of changes: libpthread/nptl/sysdeps/arm/pthread_spin_lock.S | 30 ---------- libpthread/nptl/sysdeps/arm/pthread_spin_lock.c | 66 ++++++++++++++++++++++ libpthread/nptl/sysdeps/arm/pthread_spin_trylock.S | 33 ----------- .../sysdeps/{sparc => arm}/pthread_spin_trylock.c | 9 ++- 4 files changed, 70 insertions(+), 68 deletions(-) delete mode 100644 libpthread/nptl/sysdeps/arm/pthread_spin_lock.S create mode 100644 libpthread/nptl/sysdeps/arm/pthread_spin_lock.c delete mode 100644 libpthread/nptl/sysdeps/arm/pthread_spin_trylock.S copy libpthread/nptl/sysdeps/{sparc => arm}/pthread_spin_trylock.c (77%) diff --git a/libpthread/nptl/sysdeps/arm/pthread_spin_lock.S b/libpthread/nptl/sysdeps/arm/pthread_spin_lock.S deleted file mode 100644 index a9c07c8..0000000 --- a/libpthread/nptl/sysdeps/arm/pthread_spin_lock.S +++ /dev/null @@ -1,30 +0,0 @@ -/* Copyright (C) 2005 Free Software Foundation, Inc. - This file is part of the GNU C Library. - - The GNU C Library is free software; you can redistribute it and/or - modify it under the terms of the GNU Lesser General Public - License as published by the Free Software Foundation; either - version 2.1 of the License, or (at your option) any later version. - - The GNU C Library is distributed in the hope that it will be useful, - but WITHOUT ANY WARRANTY; without even the implied warranty of - MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU - Lesser General Public License for more details. - - You should have received a copy of the GNU Lesser General Public - License along with the GNU C Library; if not, see - <http://www.gnu.org/licenses/>. */ - -#include <sysdep.h> - - .text - .align 4 - -ENTRY (pthread_spin_lock) - mov r1, #1 -1: swp r2, r1, [r0] - teq r2, #0 - bne 1b - mov r0, #0 - PSEUDO_RET_NOERRNO -END (pthread_spin_lock) diff --git a/libpthread/nptl/sysdeps/arm/pthread_spin_lock.c b/libpthread/nptl/sysdeps/arm/pthread_spin_lock.c new file mode 100644 index 0000000..77f5f50 --- /dev/null +++ b/libpthread/nptl/sysdeps/arm/pthread_spin_lock.c @@ -0,0 +1,66 @@ +/* pthread_spin_lock -- lock a spin lock. Generic version. + Copyright (C) 2012-2016 Free Software Foundation, Inc. + This file is part of the GNU C Library. + + The GNU C Library is free software; you can redistribute it and/or + modify it under the terms of the GNU Lesser General Public + License as published by the Free Software Foundation; either + version 2.1 of the License, or (at your option) any later version. + + The GNU C Library is distributed in the hope that it will be useful, + but WITHOUT ANY WARRANTY; without even the implied warranty of + MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU + Lesser General Public License for more details. + + You should have received a copy of the GNU Lesser General Public + License along with the GNU C Library; if not, see + <http://www.gnu.org/licenses/>. */ + +#include <atomic.h> +#include "pthreadP.h" + +/* A machine-specific version can define SPIN_LOCK_READS_BETWEEN_CMPXCHG + to the number of plain reads that it's optimal to spin on between uses + of atomic_compare_and_exchange_val_acq. If spinning forever is optimal + then use -1. If no plain reads here would ever be optimal, use 0. */ +#define SPIN_LOCK_READS_BETWEEN_CMPXCHG 1000 + +int +pthread_spin_lock (pthread_spinlock_t *lock) +{ + /* atomic_exchange usually takes less instructions than + atomic_compare_and_exchange. On the other hand, + atomic_compare_and_exchange potentially generates less bus traffic + when the lock is locked. + We assume that the first try mostly will be successful, and we use + atomic_exchange. For the subsequent tries we use + atomic_compare_and_exchange. */ + if (atomic_exchange_acq (lock, 1) == 0) + return 0; + + do + { + /* The lock is contended and we need to wait. Going straight back + to cmpxchg is not a good idea on many targets as that will force + expensive memory synchronizations among processors and penalize other + running threads. + On the other hand, we do want to update memory state on the local core + once in a while to avoid spinning indefinitely until some event that + will happen to update local memory as a side-effect. */ + if (SPIN_LOCK_READS_BETWEEN_CMPXCHG >= 0) + { + int wait = SPIN_LOCK_READS_BETWEEN_CMPXCHG; + + while (*lock != 0 && wait > 0) + --wait; + } + else + { + while (*lock != 0) + ; + } + } + while (atomic_compare_and_exchange_val_acq (lock, 1, 0) != 0); + + return 0; +} diff --git a/libpthread/nptl/sysdeps/arm/pthread_spin_trylock.S b/libpthread/nptl/sysdeps/arm/pthread_spin_trylock.S deleted file mode 100644 index 8ccaffd..0000000 --- a/libpthread/nptl/sysdeps/arm/pthread_spin_trylock.S +++ /dev/null @@ -1,33 +0,0 @@ -/* Copyright (C) 2005 Free Software Foundation, Inc. - This file is part of the GNU C Library. - - The GNU C Library is free software; you can redistribute it and/or - modify it under the terms of the GNU Lesser General Public - License as published by the Free Software Foundation; either - version 2.1 of the License, or (at your option) any later version. - - The GNU C Library is distributed in the hope that it will be useful, - but WITHOUT ANY WARRANTY; without even the implied warranty of - MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU - Lesser General Public License for more details. - - You should have received a copy of the GNU Lesser General Public - License along with the GNU C Library; if not, see - <http://www.gnu.org/licenses/>. */ - -#define _ERRNO_H 1 -#include <bits/errno.h> - -#include <sysdep.h> - - .text - .align 4 - -ENTRY (pthread_spin_trylock) - mov r1, #1 - swp r2, r1, [r0] - teq r2, #0 - moveq r0, #0 - movne r0, #EBUSY - PSEUDO_RET_NOERRNO -END (pthread_spin_trylock) diff --git a/libpthread/nptl/sysdeps/sparc/pthread_spin_trylock.c b/libpthread/nptl/sysdeps/arm/pthread_spin_trylock.c similarity index 77% copy from libpthread/nptl/sysdeps/sparc/pthread_spin_trylock.c copy to libpthread/nptl/sysdeps/arm/pthread_spin_trylock.c index c1b7b23..4e1a96c 100644 --- a/libpthread/nptl/sysdeps/sparc/pthread_spin_trylock.c +++ b/libpthread/nptl/sysdeps/arm/pthread_spin_trylock.c @@ -1,6 +1,6 @@ -/* Copyright (C) 2003 Free Software Foundation, Inc. +/* pthread_spin_trylock -- trylock a spin lock. Generic version. + Copyright (C) 2012-2016 Free Software Foundation, Inc. This file is part of the GNU C Library. - Contributed by Jakub Jelinek <jakub(a)redhat.com>, 2003. The GNU C Library is free software; you can redistribute it and/or modify it under the terms of the GNU Lesser General Public @@ -17,12 +17,11 @@ <http://www.gnu.org/licenses/>. */ #include <errno.h> +#include <atomic.h> #include "pthreadP.h" int pthread_spin_trylock (pthread_spinlock_t *lock) { - int res; - __asm__ __volatile__ ("ldstub [%1], %0" : "=r" (res) : "r" (lock) : "memory"); - return res == 0 ? 0 : EBUSY; + return atomic_exchange_acq (lock, 1) ? EBUSY : 0; } hooks/post-receive -- uClibc-ng - small C library for embedded systems

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problem in sscanf with different data type, uint8_t, uint16_t, uint32_t
by ayaka 31 May '16

31 May '16

Hi I meet a problem with sscanf(), I want to use this function to parse string into number. But I found the neither uint16_t nor uint8_t could work with %d. Here is the sample code: #include <stdio.h> #include <stdlib.h> #include <string.h> #include <stdint.h> int main(int argc, char **argv) { uint8_t num1; uint16_t num2; uint32_t num3; sscanf("10", "%d", &num1); sscanf("10", "%d", &num2); sscanf("10", "%d", &num3); printf("input number is %d %d %d\n", num1, num2, num3); return 0; } input number is 0 0 10 But if it is built with glibc at x86_64, the result would be: input number is 0 10 10 I have no idea why the uint8_t doesn't work, but why the uint16_t doesn't work? Here is the config of uclibc, from openwrt # # Automatically generated make config: don't edit # Version: 0.9.33.2 # Sun Mar 20 17:05:37 2016 # # TARGET_alpha is not set # TARGET_arm is not set # TARGET_avr32 is not set # TARGET_bfin is not set # TARGET_c6x is not set # TARGET_cris is not set # TARGET_e1 is not set # TARGET_frv is not set # TARGET_h8300 is not set # TARGET_hppa is not set # TARGET_i386 is not set # TARGET_i960 is not set # TARGET_ia64 is not set # TARGET_m68k is not set # TARGET_microblaze is not set TARGET_mips=y # TARGET_nios is not set # TARGET_nios2 is not set # TARGET_powerpc is not set # TARGET_sh is not set # TARGET_sh64 is not set # TARGET_sparc is not set # TARGET_v850 is not set # TARGET_vax is not set # TARGET_x86_64 is not set # TARGET_xtensa is not set # # Target Architecture Features and Options # TARGET_ARCH="mips" FORCE_OPTIONS_FOR_ARCH=y CONFIG_MIPS_O32_ABI=y # CONFIG_MIPS_N32_ABI is not set # CONFIG_MIPS_N64_ABI is not set # CONFIG_MIPS_ISA_1 is not set # CONFIG_MIPS_ISA_2 is not set # CONFIG_MIPS_ISA_3 is not set # CONFIG_MIPS_ISA_4 is not set CONFIG_MIPS_ISA_MIPS32=y # CONFIG_MIPS_ISA_MIPS32R2 is not set # CONFIG_MIPS_ISA_MIPS64 is not set TARGET_SUBARCH="" # # Using ELF file format # ARCH_ANY_ENDIAN=y ARCH_BIG_ENDIAN=y ARCH_WANTS_BIG_ENDIAN=y # ARCH_WANTS_LITTLE_ENDIAN is not set ARCH_HAS_MMU=y ARCH_USE_MMU=y UCLIBC_HAS_FLOATS=y # UCLIBC_HAS_FPU is not set UCLIBC_HAS_SOFT_FLOAT=y DO_C99_MATH=y # DO_XSI_MATH is not set # UCLIBC_HAS_FENV is not set KERNEL_HEADERS="/home/ayaka/src/openwrt/chaos_calmer/build_dir/toolchain-mips_34kc_gcc-4.8-linaro_uClibc-0.9.33.2/linux-dev/include" HAVE_DOT_CONFIG=y # # General Library Settings # DOPIC=y HAVE_SHARED=y # FORCE_SHAREABLE_TEXT_SEGMENTS is not set LDSO_LDD_SUPPORT=y LDSO_CACHE_SUPPORT=y LDSO_PRELOAD_ENV_SUPPORT=y # LDSO_PRELOAD_FILE_SUPPORT is not set LDSO_BASE_FILENAME="ld.so" # LDSO_STANDALONE_SUPPORT is not set # LDSO_PRELINK_SUPPORT is not set # UCLIBC_STATIC_LDCONFIG is not set LDSO_RUNPATH=y # LDSO_SEARCH_INTERP_PATH is not set LDSO_LD_LIBRARY_PATH=y # LDSO_NO_CLEANUP is not set UCLIBC_CTOR_DTOR=y # LDSO_GNU_HASH_SUPPORT is not set # HAS_NO_THREADS is not set # LINUXTHREADS_OLD is not set # LINUXTHREADS_NEW is not set UCLIBC_HAS_THREADS_NATIVE=y UCLIBC_HAS_THREADS=y UCLIBC_HAS_TLS=y PTHREADS_DEBUG_SUPPORT=y UCLIBC_HAS_SYSLOG=y UCLIBC_HAS_LFS=y # MALLOC is not set # MALLOC_SIMPLE is not set MALLOC_STANDARD=y MALLOC_GLIBC_COMPAT=y UCLIBC_DYNAMIC_ATEXIT=y # COMPAT_ATEXIT is not set UCLIBC_SUSV3_LEGACY=y UCLIBC_SUSV3_LEGACY_MACROS=y UCLIBC_SUSV4_LEGACY=y # UCLIBC_STRICT_HEADERS is not set # UCLIBC_HAS_STUBS is not set UCLIBC_HAS_SHADOW=y UCLIBC_HAS_PROGRAM_INVOCATION_NAME=y UCLIBC_HAS___PROGNAME=y UCLIBC_HAS_PTY=y ASSUME_DEVPTS=y # UNIX98PTY_ONLY is not set UCLIBC_HAS_GETPT=y UCLIBC_HAS_LIBUTIL=y UCLIBC_HAS_TM_EXTENSIONS=y UCLIBC_HAS_TZ_CACHING=y UCLIBC_HAS_TZ_FILE=y UCLIBC_HAS_TZ_FILE_READ_MANY=y UCLIBC_TZ_FILE_PATH="/etc/TZ" # UCLIBC_FALLBACK_TO_ETC_LOCALTIME is not set # # Advanced Library Settings # UCLIBC_PWD_BUFFER_SIZE=256 UCLIBC_GRP_BUFFER_SIZE=256 # # Support various families of functions # UCLIBC_LINUX_MODULE_26=y # UCLIBC_LINUX_MODULE_24 is not set UCLIBC_LINUX_SPECIFIC=y UCLIBC_HAS_GNU_ERROR=y UCLIBC_BSD_SPECIFIC=y UCLIBC_HAS_BSD_ERR=y # UCLIBC_HAS_OBSOLETE_BSD_SIGNAL is not set # UCLIBC_HAS_OBSOLETE_SYSV_SIGNAL is not set # UCLIBC_NTP_LEGACY is not set # UCLIBC_SV4_DEPRECATED is not set UCLIBC_HAS_REALTIME=y UCLIBC_HAS_ADVANCED_REALTIME=y UCLIBC_HAS_EPOLL=y # UCLIBC_HAS_XATTR is not set # UCLIBC_HAS_PROFILING is not set UCLIBC_HAS_CRYPT_IMPL=y # UCLIBC_HAS_SHA256_CRYPT_IMPL is not set # UCLIBC_HAS_SHA512_CRYPT_IMPL is not set UCLIBC_HAS_CRYPT=y UCLIBC_HAS_NETWORK_SUPPORT=y UCLIBC_HAS_SOCKET=y UCLIBC_HAS_IPV4=y UCLIBC_HAS_IPV6=y # UCLIBC_HAS_RPC is not set UCLIBC_USE_NETLINK=y UCLIBC_SUPPORT_AI_ADDRCONFIG=y UCLIBC_HAS_BSD_RES_CLOSE=y UCLIBC_HAS_COMPAT_RES_STATE=y # UCLIBC_HAS_EXTRA_COMPAT_RES_STATE is not set UCLIBC_HAS_RESOLVER_SUPPORT=y UCLIBC_HAS_LIBRESOLV_STUB=y UCLIBC_HAS_LIBNSL_STUB=y # # String and Stdio Support # UCLIBC_HAS_STRING_GENERIC_OPT=y UCLIBC_HAS_STRING_ARCH_OPT=y UCLIBC_HAS_CTYPE_TABLES=y UCLIBC_HAS_CTYPE_SIGNED=y # UCLIBC_HAS_CTYPE_UNSAFE is not set UCLIBC_HAS_CTYPE_CHECKED=y # UCLIBC_HAS_CTYPE_ENFORCED is not set UCLIBC_HAS_WCHAR=y # UCLIBC_HAS_LOCALE is not set UCLIBC_HAS_HEXADECIMAL_FLOATS=y UCLIBC_HAS_GLIBC_CUSTOM_PRINTF=y UCLIBC_PRINTF_SCANF_POSITIONAL_ARGS=9 # UCLIBC_HAS_STDIO_BUFSIZ_NONE is not set # UCLIBC_HAS_STDIO_BUFSIZ_256 is not set # UCLIBC_HAS_STDIO_BUFSIZ_512 is not set # UCLIBC_HAS_STDIO_BUFSIZ_1024 is not set # UCLIBC_HAS_STDIO_BUFSIZ_2048 is not set UCLIBC_HAS_STDIO_BUFSIZ_4096=y # UCLIBC_HAS_STDIO_BUFSIZ_8192 is not set UCLIBC_HAS_STDIO_BUILTIN_BUFFER_NONE=y # UCLIBC_HAS_STDIO_BUILTIN_BUFFER_4 is not set # UCLIBC_HAS_STDIO_BUILTIN_BUFFER_8 is not set # UCLIBC_HAS_STDIO_SHUTDOWN_ON_ABORT is not set UCLIBC_HAS_STDIO_GETC_MACRO=y UCLIBC_HAS_STDIO_PUTC_MACRO=y UCLIBC_HAS_STDIO_AUTO_RW_TRANSITION=y # UCLIBC_HAS_FOPEN_LARGEFILE_MODE is not set UCLIBC_HAS_FOPEN_EXCLUSIVE_MODE=y # UCLIBC_HAS_FOPEN_CLOSEEXEC_MODE is not set UCLIBC_HAS_GLIBC_CUSTOM_STREAMS=y UCLIBC_HAS_PRINTF_M_SPEC=y UCLIBC_HAS_ERRNO_MESSAGES=y # UCLIBC_HAS_SYS_ERRLIST is not set UCLIBC_HAS_SIGNUM_MESSAGES=y # UCLIBC_HAS_SYS_SIGLIST is not set UCLIBC_HAS_GNU_GETOPT=y UCLIBC_HAS_STDIO_FUTEXES=y UCLIBC_HAS_GNU_GETSUBOPT=y # # Big and Tall # UCLIBC_HAS_REGEX=y UCLIBC_HAS_REGEX_OLD=y UCLIBC_HAS_FNMATCH=y UCLIBC_HAS_FNMATCH_OLD=y UCLIBC_HAS_WORDEXP=y UCLIBC_HAS_NFTW=y UCLIBC_HAS_FTW=y UCLIBC_HAS_FTS=y UCLIBC_HAS_GLOB=y UCLIBC_HAS_GNU_GLOB=y # UCLIBC_HAS_UTMPX is not set # # Library Installation Options # RUNTIME_PREFIX="/" DEVEL_PREFIX="/usr/" MULTILIB_DIR="lib" # HARDWIRED_ABSPATH is not set # # Security options # # UCLIBC_BUILD_PIE is not set # UCLIBC_HAS_ARC4RANDOM is not set # UCLIBC_HAS_SSP is not set UCLIBC_BUILD_RELRO=y # UCLIBC_BUILD_NOW is not set UCLIBC_BUILD_NOEXECSTACK=y # # Development/debugging options # CROSS_COMPILER_PREFIX="" UCLIBC_EXTRA_CFLAGS="" # DODEBUG is not set DOSTRIP=y # DOASSERTS is not set # SUPPORT_LD_DEBUG is not set # SUPPORT_LD_DEBUG_EARLY is not set # UCLIBC_MALLOC_DEBUGGING is not set # UCLIBC_HAS_BACKTRACE is not set WARNINGS="-Wall" # EXTRA_WARNINGS is not set # DOMULTI is not set # UCLIBC_MJN3_ONLY is not set

2 1

memmove() is failing on MIPS CPU
by Rene Nielsen 29 May '16

29 May '16

I have found a bug in .../libc/string/generic/memmove.c, which is the one that MIPS uses, since there's no specialized, optimized version for MIPS. We're currently using uClibc v. 1.0.12, but I suspect the bug to be present in earlier releases too. Here's a snippet from memmove.c#memmove(): ---------------------oOo--------------------- /* This test makes the forward copying code be used whenever possible. Reduces the working set. */ if (dstp - srcp >= len) /* *Unsigned* compare! */ { #ifndef __ARCH_HAS_BWD_MEMCPY__ /* Backward memcpy implementation cannot be used */ memcpy(dest, src, len); #else /* Copy from the beginning to the end. */ ---------------------oOo--------------------- Given the name of the define (__ARCH_HAS_BWD_MEMCPY__) it sounds as when this is defined, the architecture indeed has backward memcpy() support. But how come the line is preceded by #ifndef and not #ifdef, when the code inside calls memcpy()? Also, the first comment inside the #ifndef seems odd, since memcpy() indeed is called: /* Backward memcpy implementation cannot be used */ Our SDK does not define __ARCH_HAS_BWD_MEMCPY__, so when memmove() resorts to a simple memcpy() that does the wrong thing for overlapping regions, our application fails with disastrous side-effects. I have attached a patch that fixes this. Please CC me in case of any inquiries/replies: rene.nielsen (at) microsemi.com Thanks & regards, Rene Schipp von Branitz Nielsen

4 8

new release 1.0.15
by Waldemar Brodkorb 29 May '16

29 May '16

Hi Embedded Hackers, I cut a new release. Most important changes are the removal of LT.new. LT.old symbols got renamed. Please update your uClibc-ng configs. The microblaze support got some needed fixups and seems to be usable now. (LDSO support fixed, Linuxthreads support fixed). You need a GCC patch to make use of it. http://cgit.openadk.org/cgi/cgit/openadk.git/tree/toolchain/gcc/patches/5.3… Context functionality for sparc added in this release. Alexey Brodkin (1): ldso: Force disable -mlong-calls when compiling ldso for ARC Baruch Siach (1): sigaction: fix for THREADS_NATIVE Cupertino Miranda (1): ldso/ARC: fix DT_RELACOUNT handling Leonid Lisovskiy (2): linuxthreads: Fix warnings in pthread_tryjoin_np(), pthread_timedjoin_np() buildsys: Fix broken link.asneeded function Waldemar Brodkorb (14): dltest: fix a typo sparc: add deprecated context switching functions test: add memmove test fixup stupid mixup of Makefile copyright and C code nptl/tls tests need shared library support libpthread: add missing file for gdbserver remove linuxthreads.new, rename linuxthreads.old microblaze: fix ELF detection in ld.so microblaze: fix setjmp/longjmp microblaze: fix linuxthreads support sparc: remove unused 64 bit support code Revert "disable always failing tst-signal7" mips: allow to disable prefetch support in memcpy/memset bump for release Have fun, Waldemar

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uClibc-ng - small C library for embedded systems annotated tag v1.0.15 created. v1.0.15
by wbx＠helium.openadk.org 29 May '16

29 May '16

This is an automated email from the git hooks/post-receive script. It was generated because a ref change was pushed to the repository containing the project "uClibc-ng - small C library for embedded systems". The annotated tag, v1.0.15 has been created at 5a5dc1a00c63f86f5178c07a5db6bb3e2905863a (tag) tagging 95174cb69c523a1544e5f6f20e47f7d60007e569 (commit) replaces v1.0.14 tagged by Waldemar Brodkorb on Sun May 29 09:19:37 2016 +0200 - Log ----------------------------------------------------------------- release 1.0.15 - Val-Dieu Brune -----BEGIN PGP SIGNATURE----- Comment: GPGTools - http://gpgtools.org iQIcBAABCAAGBQJXSpgKAAoJEMEz+QKmmH5imz8QAM+/sl7c82+VjddOQUJfxO45 LlEcPbFLp8AU658f/wXXInUseBsWMAdV/260p+JblciR+Gsm9zrE7s59k1IvbtxW xZcsVaRXe4F+DMcyKRjk9uxH2kCaoYe9MUliqvMUirJEKQhKKUnPSlTt1r0Wt1pq jMkbHzdZgR8BsvwHow+CIILrY/HBbDhkPEKh4JhvLNQqAUA+Y2SDhDLOk6pKXVN8 zXYuUliof/24HoyMprR//5w6ZggQy8mk+O2IZqk0tsd4B7G/TcutWFRBOf9Il/Zn 3B7R5vcmnXX80S+WLruHdtw7z8GizaaZd0lqy+quFx5vA4IiLDg9Vq6A6lWSCwan mmgcyLjPfrW5GgjSrkVFhk4U6zZZ9O45OmCMpjHK7CxPZYeezvrKQpokuBl1gix9 mE0MtQfY9sz3LkuOy6kx/3YM16kWv/SKoM6wh4wHC4ae2GHXdwp3o3N/J+PamusL PKjGQ2AjdFzzFo94y6d98AL2Y3fuCRYWuHQlNPg8gdoIrq3Q6Xj2kEO6e9/q9FS+ hBfI6hlJjdOzCLPx8AgP4cptd5esBbxlG/1FtA6OIOqYAbtuOTRaqknFxyyj4RQ9 RNeEfxD2J9u8xjL3tsN12NdLRvgJfhHE1F7Mu7v5ia/2ITYeJvFXKm2M1nsM0k3G FqGqKCYEDBVkbi/SKCIo =dxSt -----END PGP SIGNATURE----- Alexey Brodkin (1): ldso: Force disable -mlong-calls when compiling ldso for ARC Baruch Siach (1): sigaction: fix for THREADS_NATIVE Cupertino Miranda (1): ldso/ARC: fix DT_RELACOUNT handling Leonid Lisovskiy (2): linuxthreads: Fix warnings in pthread_tryjoin_np(), pthread_timedjoin_np() buildsys: Fix broken link.asneeded function Waldemar Brodkorb (14): dltest: fix a typo sparc: add deprecated context switching functions test: add memmove test fixup stupid mixup of Makefile copyright and C code nptl/tls tests need shared library support libpthread: add missing file for gdbserver remove linuxthreads.new, rename linuxthreads.old microblaze: fix ELF detection in ld.so microblaze: fix setjmp/longjmp microblaze: fix linuxthreads support sparc: remove unused 64 bit support code Revert "disable always failing tst-signal7" mips: allow to disable prefetch support in memcpy/memset bump for release ----------------------------------------------------------------------- hooks/post-receive -- uClibc-ng - small C library for embedded systems

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uClibc-ng - small C library for embedded systems branch master updated. v1.0.14-19-g95174cb
by wbx＠helium.openadk.org 29 May '16

29 May '16

This is an automated email from the git hooks/post-receive script. It was generated because a ref change was pushed to the repository containing the project "uClibc-ng - small C library for embedded systems". The branch, master has been updated via 95174cb69c523a1544e5f6f20e47f7d60007e569 (commit) from 557f663a8cb7de8cbbfa9ce63b2c956bcaad194c (commit) Those revisions listed above that are new to this repository have not appeared on any other notification email; so we list those revisions in full, below. - Log ----------------------------------------------------------------- commit 95174cb69c523a1544e5f6f20e47f7d60007e569 Author: Waldemar Brodkorb <wbx(a)uclibc-ng.org> Date: Sun May 29 09:16:49 2016 +0200 bump for release ----------------------------------------------------------------------- Summary of changes: Rules.mak | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/Rules.mak b/Rules.mak index 4f82935..207c4ec 100644 --- a/Rules.mak +++ b/Rules.mak @@ -126,7 +126,7 @@ export RUNTIME_PREFIX DEVEL_PREFIX KERNEL_HEADERS MULTILIB_DIR # Now config hard core MAJOR_VERSION := 1 MINOR_VERSION := 0 -SUBLEVEL := 14 +SUBLEVEL := 15 EXTRAVERSION := VERSION := $(MAJOR_VERSION).$(MINOR_VERSION).$(SUBLEVEL) ABI_VERSION := $(MAJOR_VERSION) hooks/post-receive -- uClibc-ng - small C library for embedded systems

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uClibc-ng - small C library for embedded systems branch master updated. v1.0.14-18-g557f663
by wbx＠helium.openadk.org 29 May '16

29 May '16

This is an automated email from the git hooks/post-receive script. It was generated because a ref change was pushed to the repository containing the project "uClibc-ng - small C library for embedded systems". The branch, master has been updated via 557f663a8cb7de8cbbfa9ce63b2c956bcaad194c (commit) from e517397535b0777568fd9c13c4214b63c52d0798 (commit) Those revisions listed above that are new to this repository have not appeared on any other notification email; so we list those revisions in full, below. - Log ----------------------------------------------------------------- commit 557f663a8cb7de8cbbfa9ce63b2c956bcaad194c Author: Waldemar Brodkorb <wbx(a)uclibc-ng.org> Date: Sun May 29 08:53:18 2016 +0200 mips: allow to disable prefetch support in memcpy/memset 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. ----------------------------------------------------------------------- Summary of changes: extra/Configs/Config.mips | 7 +++++++ libc/string/mips/memcpy.S | 2 +- libc/string/mips/memset.S | 2 +- 3 files changed, 9 insertions(+), 2 deletions(-) diff --git a/extra/Configs/Config.mips b/extra/Configs/Config.mips index e0b62dd..919e80c 100644 --- a/extra/Configs/Config.mips +++ b/extra/Configs/Config.mips @@ -31,3 +31,10 @@ config CONFIG_MIPS_N64_ABI bool "N64 ABI" endchoice + +config UCLIBC_USE_MIPS_PREFETCH + bool "Use MIPS prefetch optimization for memcpy/memset" + default y + help + You get better performance when you use Prefetch. + https://gcc.gnu.org/projects/prefetch.html#mips diff --git a/libc/string/mips/memcpy.S b/libc/string/mips/memcpy.S index 59f9f0a..3825875 100644 --- a/libc/string/mips/memcpy.S +++ b/libc/string/mips/memcpy.S @@ -39,7 +39,7 @@ #if (_MIPS_ISA == _MIPS_ISA_MIPS4) || (_MIPS_ISA == _MIPS_ISA_MIPS5) || \ (_MIPS_ISA == _MIPS_ISA_MIPS32) || (_MIPS_ISA == _MIPS_ISA_MIPS64) -# ifndef DISABLE_PREFETCH +# ifdef __UCLIBC_USE_MIPS_PREFETCH__ # define USE_PREFETCH # endif #endif diff --git a/libc/string/mips/memset.S b/libc/string/mips/memset.S index 43034ce..1c9f14c 100644 --- a/libc/string/mips/memset.S +++ b/libc/string/mips/memset.S @@ -37,7 +37,7 @@ prefetching. */ #if (__mips == 4) || (__mips == 5) || (__mips == 32) || (__mips == 64) -# ifndef DISABLE_PREFETCH +# ifdef __UCLIBC_USE_MIPS_PREFETCH__ # define USE_PREFETCH # endif #endif hooks/post-receive -- uClibc-ng - small C library for embedded systems

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[PATCH] ldso: Force disable -mlong-calls when compiling ldso for ARC
by Alexey Brodkin 28 May '16

28 May '16

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(a)synopsys.com> Cc: Vineet Gupta <vgupta(a)synopsys.com> Cc: Anton Kolesov <akolesov(a)synopsys.com> Cc: linux-snps-arc(a)lists.infradead.org --- ldso/ldso/Makefile.in | 4 ++++ 1 file changed, 4 insertions(+) diff --git a/ldso/ldso/Makefile.in b/ldso/ldso/Makefile.in index d85646a..dde6a53 100644 --- a/ldso/ldso/Makefile.in +++ b/ldso/ldso/Makefile.in @@ -34,6 +34,10 @@ CFLAGS-$(DODEBUG)-ldso/ldso := -O2 -g CFLAGS-ldso.c := -DLDSO_ELFINTERP=\"$(TARGET_ARCH)/elfinterp.c\" +ifeq ($(TARGET_ARCH),arc) +CFLAGS-ldso.c += -mno-long-calls +endif + LDFLAGS-$(UCLIBC_FORMAT_DSBT_ELF)-$(UCLIBC_LDSO_NAME).so := -Wl,--dsbt-index=1 ifneq ($(SUPPORT_LD_DEBUG),y) LDFLAGS-$(UCLIBC_LDSO_NAME).so := $(LDFLAGS) -- 2.5.5

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[PATCH] linuxthreads.old: Fix warnings in pthread_tryjoin_np(), pthread_timedjoin_np()
by Leonid Lisovskiy 28 May '16

28 May '16

Accidentally, commit 43ef9c6b3 wasn't taken into account. Signed-off-by: Leonid Lisovskiy <lly.dev(a)gmail.com> --- libpthread/linuxthreads/join.c | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-) diff --git a/libpthread/linuxthreads/join.c b/libpthread/linuxthreads/join.c index c7e5479..d422ac5 100644 --- a/libpthread/linuxthreads/join.c +++ b/libpthread/linuxthreads/join.c @@ -230,7 +230,7 @@ int pthread_tryjoin_np(pthread_t thread_id, void ** thread_return) request.req_thread = self; request.req_kind = REQ_FREE; request.req_args.free.thread_id = thread_id; - TEMP_FAILURE_RETRY(__libc_write(__pthread_manager_request, + TEMP_FAILURE_RETRY(write(__pthread_manager_request, (char *) &request, sizeof(request))); } return 0; @@ -319,7 +319,7 @@ int pthread_timedjoin_np(pthread_t thread_id, void ** thread_return, request.req_thread = self; request.req_kind = REQ_FREE; request.req_args.free.thread_id = thread_id; - TEMP_FAILURE_RETRY(__libc_write(__pthread_manager_request, + TEMP_FAILURE_RETRY(write(__pthread_manager_request, (char *) &request, sizeof(request))); } } -- 1.8.5.6

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[PATCH] buildsys: Fix broken link.asneeded function
by Leonid Lisovskiy 28 May '16

28 May '16

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 $(and)". Signed-off-by: Leonid Lisovskiy <lly.dev(a)gmail.com> --- Rules.mak | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/Rules.mak b/Rules.mak index c3dac56..4f82935 100644 --- a/Rules.mak +++ b/Rules.mak @@ -535,7 +535,7 @@ ifdef LD_FLAG_NO_ASNEEDED export CC_FLAG_NO_ASNEEDED:=-Wl,$(LD_FLAG_NO_ASNEEDED) endif endif -link.asneeded = $(if $(findstring yy,$(CC_FLAG_ASNEEDED)$(CC_FLAG_NO_ASNEEDED)),$(CC_FLAG_ASNEEDED) $(1) $(CC_FLAG_NO_ASNEEDED)) +link.asneeded = $(if $(CC_FLAG_ASNEEDED),$(if $(CC_FLAG_NO_ASNEEDED),$(CC_FLAG_ASNEEDED) $(1) $(CC_FLAG_NO_ASNEEDED))) # Check for AS_NEEDED support in linker script (binutils>=2.16.1 has it) ifndef ASNEEDED -- 1.8.5.6

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