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static link binary SIGSEGV
by 郭涛 15 Mar '17

15 Mar '17

Hello I have a static linked binary, I want run it on a mipsel_24kc platform with uclibc-ng-1.0.22. But when I run it, it show Segmentation fault. I only have the binary, no source code This binary can run with uclibc0.9.33, have you any suggestion ? exec output _dl_get_ready_to_run:461: Cool, ldso survived making function calls _dl_malloc:237: mmapping more memory _dl_get_ready_to_run:671: calling mprotect on the application program _dl_get_ready_to_run:1065: Loading: (0x772f1000) /lib/libdl.so.0 _dl_get_ready_to_run:1065: Loading: (0x772ce000) /lib/libgcc_s.so.1 _dl_load_elf_shared_library:825: Found TLS header for /lib/libc.so.0 _dl_load_elf_shared_library:852: Relocated TLS initial image from 0x93ee4 to 0x772b5ee4 (size = 0x4) _dl_get_ready_to_run:1065: Loading: (0x77222000) /lib/libc.so.0 _dl_get_ready_to_run:1065: Loading: (0x77222000) /lib/libc.so.0 _dl_get_ready_to_run:1065: Loading: (0x7730c000) /lib/ld-uClibc.so.0 _dl_get_ready_to_run:1206: Calling init_tls()! _dl_malloc:237: mmapping more memory _dl_get_ready_to_run:1306: Beginning relocation fixups _dl_get_ready_to_run:1336: Calling _dl_allocate_tls_init()! Segmentation fault gdb result Program received signal SIGSEGV, Segmentation fault. 0x00000000 in ?? () (gdb) up #1 0x77f6b3bc in __pthread_initialize_minimal_internal () at libpthread/nptl/init.c:309 (gdb) (gdb) info reg zero at v0 v1 a0 a1 a2 a3 R0 00000000 7ffff950 77ff946c ffff900c 00000000 00200000 00000000 00000000 t0 t1 t2 t3 t4 t5 t6 t7 R8 00000000 7ffff95c 00000000 00000000 7ffff940 77f963b0 00000000 10000008 s0 s1 s2 s3 s4 s5 s6 s7 R16 77fe317c 77f4fbd0 77ff946c 00000003 77fed9f0 77fe54bc 77fedb30 77ffe004 t8 t9 k0 k1 gp sp s8 ra R24 00000000 00000000 00000000 00000000 77f963b0 7ffff920 7ffff9e0 77f6b3bc status lo hi badvaddr cause pc 0100fc13 00000000 0000000f 00000000 50800008 77f6b3bc fcsr fir hi1 lo1 hi2 lo2 hi3 lo3 00000000 00730000 00000000 00000000 00000000 00000000 00000000 00000000 dspctl restart 00000000 00000000 (gdb) asm │0x77f6b37c <__pthread_initialize_minimal_internal+596> 0xa4180a │0x77f6b380 <__pthread_initialize_minimal_internal+600> addiu v1,v1,-1 │0x77f6b384 <__pthread_initialize_minimal_internal+604> addu v1,v1,v0 │0x77f6b388 <__pthread_initialize_minimal_internal+608> negu v0,v0 │0x77f6b38c <__pthread_initialize_minimal_internal+612> and v0,v1,v0 │0x77f6b390 <__pthread_initialize_minimal_internal+616> lw s1,-29680(gp) │0x77f6b394 <__pthread_initialize_minimal_internal+620> lw v1,-30256(gp) │0x77f6b398 <__pthread_initialize_minimal_internal+624> move t9,s1 │0x77f6b39c <__pthread_initialize_minimal_internal+628> sw v0,0(v1) │0x77f6b3a0 <__pthread_initialize_minimal_internal+632> jalr t9 │0x77f6b3a4 <__pthread_initialize_minimal_internal+636> sw v0,52(sp) │0x77f6b3a8 <__pthread_initialize_minimal_internal+640> lw gp,16(sp) │0x77f6b3ac <__pthread_initialize_minimal_internal+644> lw s0,-29664(gp) │0x77f6b3b0 <__pthread_initialize_minimal_internal+648> lw t9,0(s0) │0x77f6b3b4 <__pthread_initialize_minimal_internal+652> jalr t9 │0x77f6b3b8 <__pthread_initialize_minimal_internal+656> move s2,v0 >│0x77f6b3bc <__pthread_initialize_minimal_internal+660> lw gp,16(sp) │0x77f6b3c0 <__pthread_initialize_minimal_internal+664> lw v0,0(v0) │0x77f6b3c4 <__pthread_initialize_minimal_internal+668> lw v1,-30252(gp) │0x77f6b3c8 <__pthread_initialize_minimal_internal+672> sw v0,0(s2) │0x77f6b3cc <__pthread_initialize_minimal_internal+676> lw v0,-29888(gp) │0x77f6b3d0 <__pthread_initialize_minimal_internal+680> lw a1,-30248(gp) │0x77f6b3d4 <__pthread_initialize_minimal_internal+684> lw a0,-30372(gp) │0x77f6b3d8 <__pthread_initialize_minimal_internal+688> lw t9,-29472(gp) │0x77f6b3dc <__pthread_initialize_minimal_internal+692> sw v1,0(v0) │0x77f6b3e0 <__pthread_initialize_minimal_internal+696> jalr t9 libpthread/nptl/init.c:309 #ifdef SHARED /* Transfer the old value from the dynamic linker's internal location. */ *__libc_dl_error_tsd () = *(*GL(dl_error_catch_tsd)) (); GL(dl_error_catch_tsd) = &__libc_dl_error_tsd; #endif BR

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[PATCH] 'install' breaks on macos
by Alexey Neyman 02 Mar '17

02 Mar '17

Hi, On macos, install does not have a -D option; need to use separate 'do_mkdir' and 'install'. Patch attached. Regards, Alexey.

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[PATCH] Do not set *memptr to NULL for posix_memalign when fail
by Kito Cheng 02 Mar '17

02 Mar '17

Hi all: uclibc seem will set argument *memptr to NULL when posix_memalign[1] fail, I know it's not specify in most document[1-3], but other libc (newlib, glibc, musl) implementations are not set it to NULL if fail and gcc testsuite have 1 test case for that[7], so how about make uclib consistent to other libc? the patch attached. newlib[4]: int __posix_memalign (void **memptr, size_t alignment, size_t size) { void *mem; /* Test whether the ALIGNMENT argument is valid. It must be a power of two multiple of sizeof (void *). */ if (alignment % sizeof (void *) != 0 || (alignment & (alignment - 1)) != 0) return EINVAL; mem = __libc_memalign (alignment, size); if (mem != NULL) // only set when success { *memptr = mem; return 0; } return ENOMEM; } glibc [5]: int __posix_memalign (void **memptr, size_t alignment, size_t size) { void *mem; /* Test whether the SIZE argument is valid. It must be a power of two multiple of sizeof (void *). */ if (alignment % sizeof (void *) != 0 || !powerof2 (alignment / sizeof (void *)) != 0 || alignment == 0) return EINVAL; /* Call the hook here, so that caller is posix_memalign's caller and not posix_memalign itself. */ void *(*hook) (size_t, size_t, const void *) = force_reg (__memalign_hook); if (__builtin_expect (hook != NULL, 0)) mem = (*hook)(alignment, size, RETURN_ADDRESS (0)); else mem = __libc_memalign (alignment, size); if (mem != NULL) { // only set when success *memptr = mem; return 0; } return ENOMEM; } musl [6]: int posix_memalign(void **res, size_t align, size_t len) { if (align < sizeof(void *)) return EINVAL; void *mem = __memalign(align, len); if (!mem) return errno; *res = mem; // only set when success return 0; } [1] http://man7.org/linux/man-pages/man3/posix_memalign.3.html [2] http://pubs.opengroup.org/onlinepubs/009695399/ functions/posix_memalign.html [3] https://linux.die.net/man/3/posix_memalign [4] https://sourceware.org/git/gitweb.cgi?p=newlib-cygwin. git;a=blob;f=newlib/libc/sys/linux/malloc.c;h=25007e8896a1292d6ae821aa35d7b8 973ea99bad;hb=HEAD#l4938 [5] https://sourceware.org/git/?p=glibc.git;a=blob;f=malloc/malloc.c;h= 488579390578e09a1a232ac5161daee086dbbd6b;hb=HEAD#l5086 [6] http://git.musl-libc.org/cgit/musl/tree/src/malloc/posix_memalign.c [7] https://github.com/gcc-mirror/gcc/blob/master/gcc/testsuite/ gcc.dg/torture/pr60092.c

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[PATCH] ARC: Enable getpt() support in ARC defconfigs
by Vlad Zakharov 01 Mar '17

01 Mar '17

This commit enables getpt() support in ARC defconfigs as some packages need it. E.g. we need this to be able to build xterm package as it uses getpt(). As an example I can refer to buildroot autobuilds where xterm build is failing when using prebuilt ARC toolchain (which in its turn uses uClibc without getpt() support): http://autobuild.buildroot.net/results/28a/28a92049a6ceef005787c5779f77ecf3… Signed-off-by: Vlad Zakharov <vzakhar(a)synopsys.com> --- extra/Configs/defconfigs/arc/arcv2_defconfig | 1 + extra/Configs/defconfigs/arc/defconfig | 1 + 2 files changed, 2 insertions(+) diff --git a/extra/Configs/defconfigs/arc/arcv2_defconfig b/extra/Configs/defconfigs/arc/arcv2_defconfig index 383861f..a9d9891 100644 --- a/extra/Configs/defconfigs/arc/arcv2_defconfig +++ b/extra/Configs/defconfigs/arc/arcv2_defconfig @@ -16,6 +16,7 @@ UCLIBC_SUSV2_LEGACY=y UCLIBC_SUSV3_LEGACY=y UCLIBC_SUSV4_LEGACY=y UCLIBC_HAS_PROGRAM_INVOCATION_NAME=y +UCLIBC_HAS_GETPT=y UCLIBC_HAS_LIBUTIL=y UCLIBC_HAS_OBSOLETE_BSD_SIGNAL=y UCLIBC_SV4_DEPRECATED=y diff --git a/extra/Configs/defconfigs/arc/defconfig b/extra/Configs/defconfigs/arc/defconfig index d3773aa..9a76e7d 100644 --- a/extra/Configs/defconfigs/arc/defconfig +++ b/extra/Configs/defconfigs/arc/defconfig @@ -15,6 +15,7 @@ UCLIBC_SUSV2_LEGACY=y UCLIBC_SUSV3_LEGACY=y UCLIBC_SUSV4_LEGACY=y UCLIBC_HAS_PROGRAM_INVOCATION_NAME=y +UCLIBC_HAS_GETPT=y UCLIBC_HAS_LIBUTIL=y UCLIBC_HAS_OBSOLETE_BSD_SIGNAL=y UCLIBC_SV4_DEPRECATED=y -- 2.7.4

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[PATCH] ARC: Enable XSI math extensions in ARC defconfigs
by Vlad Zakharov 28 Feb '17

28 Feb '17

This commit enables XSI math extensions to the ISO C standard (bessel). We need this to be able to build mpv package as it uses functions from this extensions. As an example I can refer to buildroot autobuilds where mpv build is failing when using prebuilt ARC toolchain (which in its turn uses uClibc without XSI math extensions): http://autobuild.buildroot.net/results/fb6/fb677a917545adee321bdcd2c2519c81… Signed-off-by: Vlad Zakharov <vzakhar(a)synopsys.com> --- extra/Configs/defconfigs/arc/arcv2_defconfig | 1 + extra/Configs/defconfigs/arc/defconfig | 1 + 2 files changed, 2 insertions(+) diff --git a/extra/Configs/defconfigs/arc/arcv2_defconfig b/extra/Configs/defconfigs/arc/arcv2_defconfig index 2d12358..383861f 100644 --- a/extra/Configs/defconfigs/arc/arcv2_defconfig +++ b/extra/Configs/defconfigs/arc/arcv2_defconfig @@ -2,6 +2,7 @@ CONFIG_ARC_CPU_HS=y ARCH_WANTS_LITTLE_ENDIAN=y # UCLIBC_HAS_FPU is not set DO_C99_MATH=y +DO_XSI_MATH=y KERNEL_HEADERS="%KERNEL_HEADERS%" # DOPIC is not set # LDSO_CACHE_SUPPORT is not set diff --git a/extra/Configs/defconfigs/arc/defconfig b/extra/Configs/defconfigs/arc/defconfig index f582eb5..d3773aa 100644 --- a/extra/Configs/defconfigs/arc/defconfig +++ b/extra/Configs/defconfigs/arc/defconfig @@ -1,6 +1,7 @@ ARCH_WANTS_LITTLE_ENDIAN=y # UCLIBC_HAS_FPU is not set DO_C99_MATH=y +DO_XSI_MATH=y KERNEL_HEADERS="%KERNEL_HEADERS%" # DOPIC is not set # LDSO_CACHE_SUPPORT is not set -- 2.7.4

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Do not set *memptr to NULL for posix_memalign when fail
by Kito Cheng 26 Feb '17

26 Feb '17

Hi all: uclibc seem will set argument *memptr to NULL when posix_memalign[1] fail, I know it's not specify in most document[1-3], but other libc (newlib, glibc, musl) implementations are not set it to NULL if fail and gcc testsuite have 1 test case for that[7], so how about make uclib consistent to other libc? the patch attached. newlib[4]: int __posix_memalign (void **memptr, size_t alignment, size_t size) { void *mem; /* Test whether the ALIGNMENT argument is valid. It must be a power of two multiple of sizeof (void *). */ if (alignment % sizeof (void *) != 0 || (alignment & (alignment - 1)) != 0) return EINVAL; mem = __libc_memalign (alignment, size); if (mem != NULL) // only set when success { *memptr = mem; return 0; } return ENOMEM; } glibc [5]: int __posix_memalign (void **memptr, size_t alignment, size_t size) { void *mem; /* Test whether the SIZE argument is valid. It must be a power of two multiple of sizeof (void *). */ if (alignment % sizeof (void *) != 0 || !powerof2 (alignment / sizeof (void *)) != 0 || alignment == 0) return EINVAL; /* Call the hook here, so that caller is posix_memalign's caller and not posix_memalign itself. */ void *(*hook) (size_t, size_t, const void *) = force_reg (__memalign_hook); if (__builtin_expect (hook != NULL, 0)) mem = (*hook)(alignment, size, RETURN_ADDRESS (0)); else mem = __libc_memalign (alignment, size); if (mem != NULL) { // only set when success *memptr = mem; return 0; } return ENOMEM; } musl [6]: int posix_memalign(void **res, size_t align, size_t len) { if (align < sizeof(void *)) return EINVAL; void *mem = __memalign(align, len); if (!mem) return errno; *res = mem; // only set when success return 0; } [1] http://man7.org/linux/man-pages/man3/posix_memalign.3.html [2] http://pubs.opengroup.org/onlinepubs/009695399/functions/posix_memalign.html [3] https://linux.die.net/man/3/posix_memalign [4] https://sourceware.org/git/gitweb.cgi?p=newlib-cygwin.git;a=blob;f=newlib/l… [5] https://sourceware.org/git/?p=glibc.git;a=blob;f=malloc/malloc.c;h=48857939… [6] http://git.musl-libc.org/cgit/musl/tree/src/malloc/posix_memalign.c [7] https://github.com/gcc-mirror/gcc/blob/master/gcc/testsuite/gcc.dg/torture/…

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1.0.22 + mipsel + 2.6.22.19
by Lance Fredrickson 23 Feb '17

23 Feb '17

I'm experiencing an issue where compiling uclibc-ng-1.0.22 (+latest patches) for mipsel with kernel 2.6.22.19 gives the following error below. I've tried with newer kernel (4.9 using buildroot-2017.02-rc2) which does compile without issue. I also compile armel with kernel 2.6.36.4. Slightly newer kernel, but this configuration is compiling fine too. This issue arises somewhere between 1.0.21 and current HEAD. thanks, Lance CC libc/sysdeps/linux/common/pwritev.os In file included from ./include/sys/syscall.h:33:0, from libc/sysdeps/linux/common/pwritev.c:19: libc/sysdeps/linux/common/pwritev.c: In function 'pwritev': ./include/bits/syscalls-common.h:15:33: error: '__NR_pwritev' undeclared (first use in this function ) # define SYS_ify(syscall_name) (__NR_##syscall_name) ^ ./include/bits/syscalls.h:157:4: note: in definition of macro 'internal_syscall4' : input, "r" (__a0), "r" (__a1), "r" (__a2) \ ^~~~~ ./include/bits/syscalls.h:40:15: note: in expansion of macro 'SYS_ify' "i" (SYS_ify (name)), err, args) ^~~~~~~ ./include/bits/syscalls.h:24:24: note: in expansion of macro 'INTERNAL_SYSCALL' long result_var = INTERNAL_SYSCALL(name, err, nr, args); \ ^~~~~~~~~~~~~~~~ libc/sysdeps/linux/common/pwritev.c:25:10: note: in expansion of macro 'INLINE_SYSCALL' return INLINE_SYSCALL (pwritev, 4, fd, vector, count, offset); ^~~~~~~~~~~~~~ ./include/bits/syscalls-common.h:15:33: note: each undeclared identifier is reported only once for e ach function it appears in # define SYS_ify(syscall_name) (__NR_##syscall_name) ^ ./include/bits/syscalls.h:157:4: note: in definition of macro 'internal_syscall4' : input, "r" (__a0), "r" (__a1), "r" (__a2) \ ^~~~~ ./include/bits/syscalls.h:40:15: note: in expansion of macro 'SYS_ify' "i" (SYS_ify (name)), err, args) ^~~~~~~ ./include/bits/syscalls.h:24:24: note: in expansion of macro 'INTERNAL_SYSCALL' long result_var = INTERNAL_SYSCALL(name, err, nr, args); \ ^~~~~~~~~~~~~~~~ libc/sysdeps/linux/common/pwritev.c:25:10: note: in expansion of macro 'INLINE_SYSCALL' return INLINE_SYSCALL (pwritev, 4, fd, vector, count, offset); ^~~~~~~~~~~~~~ Makerules:369: recipe for target 'libc/sysdeps/linux/common/pwritev.os' failed make[1]: *** [libc/sysdeps/linux/common/pwritev.os] Error 1

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new website
by Waldemar Brodkorb 12 Feb '17

12 Feb '17

Hi, I updated the websites for my embedded linux projects today. If you have any issues to access anything, please sent me an email. I got bored by Trac and now static websites generated with hugo, and gogs for wiki/issue/git is in use. The cgit interface and mailman are still the same. I switched to the faster git http backend for cloning via http/https. I moved on to new certbot and all websites are forced to https. Some minor content (C library matric/ Debugging hints will be added soon). Thanks to Simone for my new black labrador logo abstracted from a real photo of my dog. best regards Waldemar

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[PATCH] 1.0.{20, 21} cannot be used in external toolchain in buildroot
by Alexey Neyman 05 Feb '17

05 Feb '17

Hi, Buildroot checks for UCLIBC_HAS_LFS feature macro, which was removed in 1.0.20 (making uClibc-ng always support large files). Patch restores this symbol as "always-enabled". Regards, Alexey.

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uClibc-ng - small C library for embedded systems branch master updated. v1.0.22-1-g71127e5
by wbx＠helium.openadk.org 03 Feb '17

03 Feb '17

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 71127e5cc937878883e6021da3da337a7aa9c099 (commit) from 3b09bf921e994efd50c3c285f7388fbdbce374d1 (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 71127e5cc937878883e6021da3da337a7aa9c099 Author: Waldemar Brodkorb <wbx(a)openadk.org> Date: Fri Feb 3 06:04:16 2017 +0100 fstat: make new code aarch64 specific The new code get's used by MIPS64 N64 and fails. Make the new code aarch64 specific. ----------------------------------------------------------------------- Summary of changes: libc/sysdeps/linux/common/fstat.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/libc/sysdeps/linux/common/fstat.c b/libc/sysdeps/linux/common/fstat.c index ac77eb2..c27f926 100644 --- a/libc/sysdeps/linux/common/fstat.c +++ b/libc/sysdeps/linux/common/fstat.c @@ -21,7 +21,7 @@ int fstat(int fd, struct stat *buf) } libc_hidden_def(fstat) -#elif __WORDSIZE == 64 && defined __NR_newfstatat +#elif __WORDSIZE == 64 && defined __NR_newfstatat && __aarch64__ #include <fcntl.h> int fstat(int fd, struct stat *buf) hooks/post-receive -- uClibc-ng - small C library for embedded systems

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